首页 > 最新文献

The Scientific World Journal最新文献

英文 中文
An Investigation into the Phytochemical Content and Antioxidant, Antidiabetic, and Wound-Healing Activities of Curculigo latifolia Found in Brunei Darussalam. 文莱达鲁萨兰国发现的卷柏(Curculigo latifolia)植物化学成分含量及抗氧化、抗糖尿病和伤口愈合活性的研究。
Q2 Environmental Science Pub Date : 2024-08-03 eCollection Date: 2024-01-01 DOI: 10.1155/2024/5656744
Amanina Yusrina Taufik, Hartini Mohd Yasin, Norhayati Ahmad, Masayoshi Arai, Fairuzeta Ja'afar

This present study aimed to investigate the phytochemical content and antioxidant and antidiabetic activities of Curculigo latifolia leaves (CL) and C. latifolia roots (CR) found in Brunei Darussalam. Phytochemical screening showed that CL and CR extracts contain saponins, tannins, glycosides, and terpenoids. CR showed higher total phenolic content (TPC), but lower total flavonoid content (TFC) when compared to CL. The high TPC in CR contributed to its potent radical scavenging activity (RSA) against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and strong ferric reducing antioxidant power (FRAP). Additionally, CR exerted significant inhibition of ∝-glucosidase and ∝-amylase, suggesting a potential link between the chemical compounds and its antioxidant and antidiabetic effects. In the animal study of antihyperglycemic activity, treatment with 250 mg/kg body weight (b.w.) of the CL extract normalised the blood glucose levels and improved body weight gain of alloxan-induced diabetic rats within 14 weeks. Furthermore, our investigation into the wound-healing effects of young C. latifolia leaves (YCL) and matured C. latifolia leaves (MCL) showed a significant reduction in wound size on Day 3, 5, and 7 of the experimental study, indicating its wound-healing potential. Based on our findings, C. latifolia can be consumed as part of a balanced diet due to its antioxidant and antidiabetic properties.

本研究旨在调查在文莱达鲁萨兰国发现的莪术叶(CL)和莪术根(CR)的植物化学成分含量以及抗氧化和抗糖尿病活性。植物化学筛选表明,CL 和 CR 提取物含有皂苷、单宁、苷和萜类化合物。与 CL 相比,CR 的总酚含量(TPC)较高,但总黄酮含量(TFC)较低。CR 中较高的总酚含量使其对 2,2-二苯基-1-苦基肼(DPPH)自由基具有较强的自由基清除活性(RSA),并具有较强的铁还原抗氧化能力(FRAP)。此外,CR 还对∝-葡萄糖苷酶和∝-淀粉酶有明显的抑制作用,这表明该化合物与其抗氧化和抗糖尿病作用之间存在潜在联系。在抗高血糖活性的动物实验中,用 250 毫克/千克体重(b.w.)的 CL 提取物治疗 14 周内,阿脲诱导的糖尿病大鼠的血糖水平趋于正常,体重增加也有所改善。此外,我们对阔叶木通嫩叶(YCL)和阔叶木通成熟叶(MCL)的伤口愈合效果进行了研究,结果表明,在实验研究的第 3、5 和 7 天,阔叶木通嫩叶(YCL)和阔叶木通成熟叶(MCL)的伤口面积显著缩小,这表明阔叶木通嫩叶(YCL)和阔叶木通成熟叶(MCL)具有伤口愈合潜力。根据我们的研究结果,厚朴叶具有抗氧化和抗糖尿病的特性,可以作为均衡饮食的一部分食用。
{"title":"An Investigation into the Phytochemical Content and Antioxidant, Antidiabetic, and Wound-Healing Activities of <i>Curculigo latifolia</i> Found in Brunei Darussalam.","authors":"Amanina Yusrina Taufik, Hartini Mohd Yasin, Norhayati Ahmad, Masayoshi Arai, Fairuzeta Ja'afar","doi":"10.1155/2024/5656744","DOIUrl":"10.1155/2024/5656744","url":null,"abstract":"<p><p>This present study aimed to investigate the phytochemical content and antioxidant and antidiabetic activities of <i>Curculigo latifolia</i> leaves (CL) and <i>C. latifolia</i> roots (CR) found in Brunei Darussalam. Phytochemical screening showed that CL and CR extracts contain saponins, tannins, glycosides, and terpenoids. CR showed higher total phenolic content (TPC), but lower total flavonoid content (TFC) when compared to CL. The high TPC in CR contributed to its potent radical scavenging activity (RSA) against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals and strong ferric reducing antioxidant power (FRAP). Additionally, CR exerted significant inhibition of ∝-glucosidase and ∝-amylase, suggesting a potential link between the chemical compounds and its antioxidant and antidiabetic effects. In the animal study of antihyperglycemic activity, treatment with 250 mg/kg body weight (b.w.) of the CL extract normalised the blood glucose levels and improved body weight gain of alloxan-induced diabetic rats within 14 weeks. Furthermore, our investigation into the wound-healing effects of young <i>C. latifolia</i> leaves (YCL) and matured <i>C. latifolia</i> leaves (MCL) showed a significant reduction in wound size on Day 3, 5, and 7 of the experimental study, indicating its wound-healing potential. Based on our findings, <i>C. latifolia</i> can be consumed as part of a balanced diet due to its antioxidant and antidiabetic properties.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"5656744"},"PeriodicalIF":0.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11316913/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141917483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevalence of the Patterns of Unhealthy Diet in the School and University Students of Iran: A Systematic Review and Meta-Analysis. 伊朗中小学生和大学生不健康饮食模式的普遍性:系统回顾与元分析》。
Q2 Environmental Science Pub Date : 2024-07-30 eCollection Date: 2024-01-01 DOI: 10.1155/2024/2697001
Seyyed Amir Yasin Ahmadi, Neda SoleimanvandiAzar, Mahshid Roohravan Benis, Ali Mehrabi, Roya Vesal Azad, Marzieh Nojomi

Introduction: The present study was conducted to investigate the pooled prevalence rate of the different patterns of unhealthy diet among the school and university students of Iran.

Methods: In this systematic review, the type of the main question was regarding prevalence and the effect measure was prevalence rate reported along with 95% confidence interval (CI). Data bases including PubMed, Scopus, and Web of Science as well as Google Scholar and Persian resources were used. The Newcastle-Ottawa scale (NOS) checklist was used for quality assessment of studies.

Results: The extracted types of unhealthy diet in the present systematic review were "breakfast skipper," "fast food," "hydrogenated oils consumption," "salty snacks," "sweetened beverages," "breakfast skipper," "dinner skipper," "launch skipper," and "sweets." The range of pooled prevalence for different types was 0.06-0.75. The data of 16,321 subjects included in six studies were analyzed. The pooled prevalence of unhealthy diet was 0.28 (95% CI: 0.23-0.33, I 2 > 99%) overall, 0.25 (95% CI: 0.20-0.31, I 2 > 99%) in school students and 0.37 (95% CI: 0.12-0.62, I 2 > 99%) in university students. The most prevalent pattern was breakfast skipping 0.39 (95% CI: 0.28-0.50) followed by consumption of sweetened beverages 0.31 (95% CI: 0.20-0.43). The pooled prevalence range among the patterns was 0.06-0.75 (random effects for all).

Conclusion: The pooled prevalence was 28% for unhealthy diet among the Iranian students (6% to 75% in different patterns). Although there was uncertainty regarding the pooled evidence, the whole of the mentioned range was clinically important for health policymakers. Decisions should be made on the basis of the patterns.

导言本研究旨在调查伊朗中小学生和大学生中不同不健康饮食模式的总体流行率:在本系统综述中,主要问题的类型是流行率,效果衡量标准是流行率报告和 95% 的置信区间 (CI)。使用的数据库包括 PubMed、Scopus、Web of Science 以及 Google Scholar 和波斯语资源。研究质量评估采用纽卡斯尔-渥太华量表(NOS)核对表:本系统综述提取的不健康饮食类型包括 "早餐快餐"、"快餐"、"氢化油消费"、"咸味零食"、"甜饮料"、"早餐快餐"、"晚餐快餐"、"下水快餐 "和 "甜食"。不同类型的集合流行率范围为 0.06-0.75。对六项研究中 16 321 名受试者的数据进行了分析。不健康饮食的总体流行率为 0.28(95% CI:0.23-0.33,I 2 > 99%),中小学生为 0.25(95% CI:0.20-0.31,I 2 > 99%),大学生为 0.37(95% CI:0.12-0.62,I 2 > 99%)。最普遍的模式是不吃早餐,0.39(95% CI:0.28-0.50),其次是饮用甜饮料,0.31(95% CI:0.20-0.43)。各种模式的汇总流行率范围为 0.06-0.75(所有模式的随机效应):伊朗学生不健康饮食的总体流行率为 28%(不同模式的流行率为 6%至 75%)。尽管汇总证据存在不确定性,但上述整个范围对卫生决策者具有重要的临床意义。应根据不同的模式做出决定。
{"title":"Prevalence of the Patterns of Unhealthy Diet in the School and University Students of Iran: A Systematic Review and Meta-Analysis.","authors":"Seyyed Amir Yasin Ahmadi, Neda SoleimanvandiAzar, Mahshid Roohravan Benis, Ali Mehrabi, Roya Vesal Azad, Marzieh Nojomi","doi":"10.1155/2024/2697001","DOIUrl":"10.1155/2024/2697001","url":null,"abstract":"<p><strong>Introduction: </strong>The present study was conducted to investigate the pooled prevalence rate of the different patterns of unhealthy diet among the school and university students of Iran.</p><p><strong>Methods: </strong>In this systematic review, the type of the main question was regarding prevalence and the effect measure was prevalence rate reported along with 95% confidence interval (CI). Data bases including PubMed, Scopus, and Web of Science as well as Google Scholar and Persian resources were used. The Newcastle-Ottawa scale (NOS) checklist was used for quality assessment of studies.</p><p><strong>Results: </strong>The extracted types of unhealthy diet in the present systematic review were \"breakfast skipper,\" \"fast food,\" \"hydrogenated oils consumption,\" \"salty snacks,\" \"sweetened beverages,\" \"breakfast skipper,\" \"dinner skipper,\" \"launch skipper,\" and \"sweets.\" The range of pooled prevalence for different types was 0.06-0.75. The data of 16,321 subjects included in six studies were analyzed. The pooled prevalence of unhealthy diet was 0.28 (95% CI: 0.23-0.33, <i>I</i> <sup>2</sup> > 99%) overall, 0.25 (95% CI: 0.20-0.31, <i>I</i> <sup>2</sup> > 99%) in school students and 0.37 (95% CI: 0.12-0.62, <i>I</i> <sup>2</sup> > 99%) in university students. The most prevalent pattern was breakfast skipping 0.39 (95% CI: 0.28-0.50) followed by consumption of sweetened beverages 0.31 (95% CI: 0.20-0.43). The pooled prevalence range among the patterns was 0.06-0.75 (random effects for all).</p><p><strong>Conclusion: </strong>The pooled prevalence was 28% for unhealthy diet among the Iranian students (6% to 75% in different patterns). Although there was uncertainty regarding the pooled evidence, the whole of the mentioned range was clinically important for health policymakers. Decisions should be made on the basis of the patterns.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"2697001"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11303044/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analyzing Land Use/Land Cover Changes Using Google Earth Engine and Random Forest Algorithm and Their Implications to the Management of Land Degradation in the Upper Tekeze Basin, Ethiopia. 利用谷歌地球引擎和随机森林算法分析土地利用/土地覆盖变化及其对埃塞俄比亚上特凯泽盆地土地退化管理的影响。
Q2 Environmental Science Pub Date : 2024-07-30 eCollection Date: 2024-01-01 DOI: 10.1155/2024/3937558
Alemu Eshetu Fentaw, Assefa Abegaz

Land use and land cover change (LULCC) without appropriate management practices has been identified as a major factor contributing to land degradation, with significant impacts on ecosystem services and climate change and hence on human livelihoods. Therefore, up-to-date and accurate LULCC data and maps at different spatial scales are significant for regular monitoring of existing ecosystems, proper planning of natural resource management, and promotion of sustainable regional development. This study investigates the temporal and spatial dynamics of land use land cover (LULC) changes over 31 years (1990-2021) in the upper Tekeze River basin, Ethiopia, utilizing advanced remote sensing techniques such as Google Earth Engine (GEE) and the Random Forest (RF) algorithm. Landsat surface reflectance images from Landsat Thematic Mapper (TM) (1990, 2000, and 2010) and Landsat 8 Operational land imager (OLI) sensors (2021) were used. Besides, auxiliary data were utilized to improve the classification of LULC classes. LULC was classified using the Random Forest (RF) classification algorithm in the Google Earth Engine (GEE). The OpenLand R package was used to map the LULC transition and intensity of changes across the study period. Despite the complexity of the topographic and climatic features of the study area, the RF algorithm achieved high accuracy with 0.83 and 0.75 overall accuracy and Kappa values, respectively. The LULC change results from 1990 to 2021 showed that forest, bushland, shrubland, and bareland decreased by 12.2, 24.8, 1.2, and 15.4%, respectively. Bareland has changed to farmland, settlement, and dry riverbed and stream channels. Expansion of dry stream channels and sandy land surfaces has been observed from 1990 to 2021. Bushland has shown an increment by 17.2% from 1900 to 2010 but decreased by 19.5% from 2010 to 2021. Throughout the study period, water, farmland, dry stream channels and riverbeds, and urban settlements showed positive net gains of 484, 8.7, 82, and 26778.5%, respectively. However, forest, bush, shrub, and bareland experienced 12.17, 24.8, 1.2, and 15.37% losses. The observed changes showed the existing land degradation and the future vulnerability of the basin which would serve as an evidence to mitigate land degradation by avoiding the future conversion of forest, bushland, and shrubland to farmland, on the one hand, and by scaling up sustainable farmland management, and afforestation practices on degraded and vulnerable areas, on the other hand.

没有适当管理措施的土地利用和土地覆被变化(LULCC)已被确定为导致土地退化的主要因素,对生态系统服务和气候变化产生重大影响,进而影响人类生计。因此,不同空间尺度上最新、准确的 LULCC 数据和地图对于定期监测现有生态系统、合理规划自然资源管理以及促进区域可持续发展具有重要意义。本研究利用先进的遥感技术,如谷歌地球引擎(GEE)和随机森林(RF)算法,研究了埃塞俄比亚 Tekeze 河上游流域 31 年(1990-2021 年)间土地利用、土地覆被和土壤覆盖(LULC)的时空动态变化。使用了大地遥感卫星专题成像仪(TM)(1990 年、2000 年和 2010 年)和大地遥感卫星 8 业务陆地成像仪(OLI)传感器(2021 年)的大地遥感卫星表面反射率图像。此外,还利用辅助数据来改进 LULC 类别的分类。使用谷歌地球引擎(GEE)中的随机森林(RF)分类算法对 LULC 进行分类。OpenLand R 软件包用于绘制整个研究期间 LULC 的过渡和变化强度图。尽管研究区域的地形和气候特征十分复杂,但 RF 算法的准确度很高,总体准确度和 Kappa 值分别为 0.83 和 0.75。从 1990 年到 2021 年的土地利用、土地利用变化结果显示,森林、灌木林、灌木地和裸地分别减少了 12.2%、24.8%、1.2% 和 15.4%。裸地已变为农田、定居点、干河床和河道。从 1990 年到 2021 年,干涸河道和沙质地表不断扩大。灌木丛从 1900 年到 2010 年增加了 17.2%,但从 2010 年到 2021 年减少了 19.5%。在整个研究期间,水域、农田、干流河道和河床以及城市住区的净收益分别为 484%、8.7%、82% 和 26778.5%。然而,森林、灌木丛、灌木林和裸地分别减少了 12.17%、24.8%、1.2% 和 15.37%。观测到的变化显示了该流域现有的土地退化情况和未来的脆弱性,这一方面证明了通过避免未来将森林、灌木林和灌木地转化为农田,另一方面证明了通过在退化和脆弱地区推广可持续农田管理和植树造林做法,可以缓解土地退化。
{"title":"Analyzing Land Use/Land Cover Changes Using Google Earth Engine and Random Forest Algorithm and Their Implications to the Management of Land Degradation in the Upper Tekeze Basin, Ethiopia.","authors":"Alemu Eshetu Fentaw, Assefa Abegaz","doi":"10.1155/2024/3937558","DOIUrl":"10.1155/2024/3937558","url":null,"abstract":"<p><p>Land use and land cover change (LULCC) without appropriate management practices has been identified as a major factor contributing to land degradation, with significant impacts on ecosystem services and climate change and hence on human livelihoods. Therefore, up-to-date and accurate LULCC data and maps at different spatial scales are significant for regular monitoring of existing ecosystems, proper planning of natural resource management, and promotion of sustainable regional development. This study investigates the temporal and spatial dynamics of land use land cover (LULC) changes over 31 years (1990-2021) in the upper Tekeze River basin, Ethiopia, utilizing advanced remote sensing techniques such as Google Earth Engine (GEE) and the Random Forest (RF) algorithm. Landsat surface reflectance images from Landsat Thematic Mapper (TM) (1990, 2000, and 2010) and Landsat 8 Operational land imager (OLI) sensors (2021) were used. Besides, auxiliary data were utilized to improve the classification of LULC classes. LULC was classified using the Random Forest (RF) classification algorithm in the Google Earth Engine (GEE). The OpenLand <i>R</i> package was used to map the LULC transition and intensity of changes across the study period. Despite the complexity of the topographic and climatic features of the study area, the RF algorithm achieved high accuracy with 0.83 and 0.75 overall accuracy and Kappa values, respectively. The LULC change results from 1990 to 2021 showed that forest, bushland, shrubland, and bareland decreased by 12.2, 24.8, 1.2, and 15.4%, respectively. Bareland has changed to farmland, settlement, and dry riverbed and stream channels. Expansion of dry stream channels and sandy land surfaces has been observed from 1990 to 2021. Bushland has shown an increment by 17.2% from 1900 to 2010 but decreased by 19.5% from 2010 to 2021. Throughout the study period, water, farmland, dry stream channels and riverbeds, and urban settlements showed positive net gains of 484, 8.7, 82, and 26778.5%, respectively. However, forest, bush, shrub, and bareland experienced 12.17, 24.8, 1.2, and 15.37% losses. The observed changes showed the existing land degradation and the future vulnerability of the basin which would serve as an evidence to mitigate land degradation by avoiding the future conversion of forest, bushland, and shrubland to farmland, on the one hand, and by scaling up sustainable farmland management, and afforestation practices on degraded and vulnerable areas, on the other hand.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"3937558"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11303058/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Cavity Designs on Fracture Resistance: Analysis of the Role of Different Access Techniques to the Endodontic Cavity in the Onset of Fractures: Narrative Review. 牙洞设计对抗折性的影响:分析不同的牙髓腔进入技术在发生折裂中的作用:叙述性综述。
Q2 Environmental Science Pub Date : 2024-07-30 eCollection Date: 2024-01-01 DOI: 10.1155/2024/1648011
Mario Dioguardi, Davide La Notte, Diego Sovereto, Cristian Quarta, Angelo Martella, Andrea Ballini

Objectives: In recent years, new endodontic access techniques have been proposed with the aim of preserving as much dental tissue as possible for subsequent prosthetic rehabilitation. It has indeed been demonstrated that the success of this therapy is essential and dependent on the proper execution of endodontic cavity access. The main objective is to provide a comprehensive and up-to-date overview of the new access techniques in endodontics in order to guide clinical practice toward a more precise and qualitative approach. As of today, there is still no universally standardized and recognized taxonomy for the different access cavity designs described in the literature. It has been observed that there are various nomenclatures in the literature. The cavity access designs described mainly in the literature can be categorized into six groups: Traditional Access Cavity (TradAC), Conservative Access Cavity (ConsAC), Ultra-Conservative Access Cavity (UltraAC), Truss Access Cavity (TrussAC), Caries-Guided Access Cavity (CariesAC), and Restoration-Guided Access Cavity (RestoAC).

Materials and methods: The drafting of this narrative review followed the indications of the SANRA (Scale for the Assessment of Narrative Review Articles). A search for scientific articles was conducted on the PubMed and SCOPUS databases, using the following search query: ((truss) OR (conservative) OR (ninja) OR (traditional)) AND access AND endodontic.

Results: The initial search yielded a total of 941 articles. After removing duplicates using EndNote X8 software, the number of articles decreased to 785. By applying the inclusion and exclusion criteria, a total of 64 articles were obtained. Among these, 20 articles were finally selected for the purposes of this review, 11 literature reviews and 9 ex-vivo studies.

Conclusion: Studies on fracture resistance have yielded heterogeneous results. For anterior teeth, studies do not find a significant relationship between different endodontic access cavities and fracture resistance. However, in the posterior sector, there is more discrepancy and many positive results for minimally invasive access cavities seem to relate to molars. Therefore, it can be concluded that the evidence supporting the influence of endodontic preparations on dental fracture resistance is still limited. Research on new endodontic access techniques holds significant clinical relevance in contemporary endodontics. The evolution of dental technologies, including cone beam computed tomography (CBCT) and computer-guided cavity preparation, has ushered in the era of minimally invasive endodontics. This shift aims to enhance the precision and quality of endodontic treatments while preserving maximum healthy dental tissue for subsequent prosthetic rehabilitation. The success of endodontic therapy is closely tied to the proper execution of access to the endodontium, influencing all p

目的:近年来,人们提出了一些新的根管治疗技术,目的是尽可能多地保留牙体组织,以便进行后续修复。事实证明,这种治疗方法的成功与否取决于牙髓腔通路的正确实施。本书的主要目的是对根管治疗中新的入路技术进行全面和最新的概述,以指导临床实践采用更精确和更高质量的方法。迄今为止,对于文献中描述的不同的通路牙洞设计,仍没有一个统一的标准和公认的分类法。据观察,文献中有各种不同的命名方法。文献中主要描述的腔体接入设计可分为六类:传统就诊洞(TradAC)、保守就诊洞(ConsAC)、超保守就诊洞(UltraAC)、桁架就诊洞(TrussAC)、龋引导就诊洞(CariesAC)和修复引导就诊洞(RestoAC):这篇叙事性综述的起草遵循了 SANRA(叙事性综述文章评估量表)的指示。在 PubMed 和 SCOPUS 数据库中使用以下搜索条件对科学文章进行了检索:((桁架) OR (保守) OR (忍者) OR (传统)) AND access AND endodontic.结果:结果:初步搜索共获得 941 篇文章。使用 EndNote X8 软件去除重复文章后,文章数量减少到 785 篇。根据纳入和排除标准,共获得 64 篇文章。在这些文章中,最终有 20 篇文章被选中用于本综述,其中 11 篇为文献综述,9 篇为体外研究:结论:关于抗折性的研究结果各不相同。对于前牙,研究并未发现不同的牙髓通路洞与抗折断性之间有明显的关系。然而,在后牙方面,差异较大,许多关于微创入路腔的积极结果似乎与磨牙有关。因此,可以得出结论,支持牙髓预备对牙齿抗折性影响的证据仍然有限。对新的牙髓通路技术的研究在当代牙髓病学中具有重要的临床意义。牙科技术的发展,包括锥形束计算机断层扫描(CBCT)和计算机引导的牙洞预备,开创了微创根管治疗的时代。这一转变旨在提高牙髓治疗的精确度和质量,同时最大限度地保留健康的牙体组织,以利于后续的修复治疗。牙髓治疗的成功与否与牙本质的正确进入密切相关,它影响着牙髓治疗的所有阶段,并对后续修复阶段的抗折性起着决定性作用。传统方法和微创方法之间的对立激发了临床研究。特别是在科学界,人们对微创入路洞的潜在局限性提出了质疑。这些疑虑包括它们对根管口定位的影响,以及它们对根管治疗整体成功率的影响。这篇综述具有重要的临床意义,因为它揭示了牙髓治疗通路技术不断发展的前景,分析了解剖学轨迹,仔细研究了向微创方法的过渡,并批判性地评估了现有的科学证据和围绕这些发展的担忧,有助于临床实践中的知情决策过程。
{"title":"Influence of Cavity Designs on Fracture Resistance: Analysis of the Role of Different Access Techniques to the Endodontic Cavity in the Onset of Fractures: Narrative Review.","authors":"Mario Dioguardi, Davide La Notte, Diego Sovereto, Cristian Quarta, Angelo Martella, Andrea Ballini","doi":"10.1155/2024/1648011","DOIUrl":"10.1155/2024/1648011","url":null,"abstract":"<p><strong>Objectives: </strong>In recent years, new endodontic access techniques have been proposed with the aim of preserving as much dental tissue as possible for subsequent prosthetic rehabilitation. It has indeed been demonstrated that the success of this therapy is essential and dependent on the proper execution of endodontic cavity access. The main objective is to provide a comprehensive and up-to-date overview of the new access techniques in endodontics in order to guide clinical practice toward a more precise and qualitative approach. As of today, there is still no universally standardized and recognized taxonomy for the different access cavity designs described in the literature. It has been observed that there are various nomenclatures in the literature. The cavity access designs described mainly in the literature can be categorized into six groups: Traditional Access Cavity (TradAC), Conservative Access Cavity (ConsAC), Ultra-Conservative Access Cavity (UltraAC), Truss Access Cavity (TrussAC), Caries-Guided Access Cavity (CariesAC), and Restoration-Guided Access Cavity (RestoAC).</p><p><strong>Materials and methods: </strong>The drafting of this narrative review followed the indications of the SANRA (Scale for the Assessment of Narrative Review Articles). A search for scientific articles was conducted on the PubMed and SCOPUS databases, using the following search query: ((truss) OR (conservative) OR (ninja) OR (traditional)) AND access AND endodontic.</p><p><strong>Results: </strong>The initial search yielded a total of 941 articles. After removing duplicates using EndNote X8 software, the number of articles decreased to 785. By applying the inclusion and exclusion criteria, a total of 64 articles were obtained. Among these, 20 articles were finally selected for the purposes of this review, 11 literature reviews and 9 ex-vivo studies.</p><p><strong>Conclusion: </strong>Studies on fracture resistance have yielded heterogeneous results. For anterior teeth, studies do not find a significant relationship between different endodontic access cavities and fracture resistance. However, in the posterior sector, there is more discrepancy and many positive results for minimally invasive access cavities seem to relate to molars. Therefore, it can be concluded that the evidence supporting the influence of endodontic preparations on dental fracture resistance is still limited. Research on new endodontic access techniques holds significant clinical relevance in contemporary endodontics. The evolution of dental technologies, including cone beam computed tomography (CBCT) and computer-guided cavity preparation, has ushered in the era of minimally invasive endodontics. This shift aims to enhance the precision and quality of endodontic treatments while preserving maximum healthy dental tissue for subsequent prosthetic rehabilitation. The success of endodontic therapy is closely tied to the proper execution of access to the endodontium, influencing all p","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"1648011"},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11303043/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141898336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Cross-Sectional Study to Assess Diabetes as a Risk Factor for Root Caries Amongst the Elderly Population in Udupi District, Karnataka State, India. 印度卡纳塔克邦乌杜皮区一项横断面研究,评估糖尿病作为老年人口龋齿风险因素的情况。
Q2 Environmental Science Pub Date : 2024-07-25 eCollection Date: 2024-01-01 DOI: 10.1155/2024/9963917
Kush Kalra, Ramprasad Vasthare, Shivashankar K N, Nishu Singla, Deepak Kumar Singhal, Ritesh Singla

Objectives: To compare the prevalence of root surface carious lesions among the nondiabetic and diabetic elderly population and its association with various risk factors.

Methods: An observational analytical cross-sectional study was conducted among 800 elderly participants, 431 males and 369 females, aged 50 years and above, with a minimum of ten teeth present, with 400 being diabetic and 400 nondiabetic from the various hospitals of the Udupi district. Demographics, socioeconomic status, oral hygiene practices, oral abusive habits, and history of type 2 diabetes were collected using an interviewer-administered questionnaire followed by an intraoral examination to assess root caries. The primary outcome measure was the presence of any carious or filled root surface. Binary logistic regression univariate analysis was done for all the predictor variables, and those with significant associations were further analyzed by multivariate analysis with the enter method in a single-step model. An appropriate nomogram was designed for risk prediction.

Results: Overall, the root caries prevalence was 37.3%, and the mean root caries index was 14.28%. The prevalence of root caries was 46% in people with diabetes and 28.5% in nondiabetics. Participants with type 2 diabetes, less education, low socioeconomic status, and using finger cleaning had a significantly higher risk of developing root caries. Additionally, those who used removable partial dentures (RPDs) were found to be 4.65 times more likely to have root caries than those who did not use RPDs.

Conclusion: Elderly diabetics are at a higher risk for developing root caries and are strongly advised to maintain good oral hygiene practices and to undergo periodic dental evaluations. Therefore, it is crucial to emphasize early diagnosis and treatment of root caries in this population.

目的比较非糖尿病和糖尿病老年人群中根面龋病的患病率及其与各种风险因素的关系:对来自乌杜比区各家医院的 800 名 50 岁及以上、至少有 10 颗牙齿的老年人(男性 431 人,女性 369 人)进行了观察分析横断面研究,其中 400 人为糖尿病患者,400 人为非糖尿病患者。通过访谈者发放的问卷收集了人口统计学、社会经济状况、口腔卫生习惯、口腔辱骂习惯和 2 型糖尿病病史,随后进行了口腔内检查以评估牙根龋情况。主要结果指标是牙根表面是否存在龋坏或填充。对所有预测变量进行了二元逻辑回归单变量分析,并在单步模型中使用回车法对具有显著相关性的变量进行了多变量分析。设计了适当的风险预测提名图:总体而言,根龋发生率为 37.3%,平均根龋指数为 14.28%。糖尿病患者的牙根龋齿发生率为 46%,非糖尿病患者的牙根龋齿发生率为 28.5%。患有 2 型糖尿病、教育程度较低、社会经济地位较低以及使用手指清洁的参与者患龋齿的风险明显更高。此外,使用可摘局部义齿(RPD)的人患牙根龋的几率是不使用 RPD 的人的 4.65 倍:结论:老年糖尿病患者患龋齿的风险较高,因此强烈建议他们保持良好的口腔卫生习惯,并定期进行牙科评估。因此,强调对这一人群进行根龋的早期诊断和治疗至关重要。
{"title":"A Cross-Sectional Study to Assess Diabetes as a Risk Factor for Root Caries Amongst the Elderly Population in Udupi District, Karnataka State, India.","authors":"Kush Kalra, Ramprasad Vasthare, Shivashankar K N, Nishu Singla, Deepak Kumar Singhal, Ritesh Singla","doi":"10.1155/2024/9963917","DOIUrl":"10.1155/2024/9963917","url":null,"abstract":"<p><strong>Objectives: </strong>To compare the prevalence of root surface carious lesions among the nondiabetic and diabetic elderly population and its association with various risk factors.</p><p><strong>Methods: </strong>An observational analytical cross-sectional study was conducted among 800 elderly participants, 431 males and 369 females, aged 50 years and above, with a minimum of ten teeth present, with 400 being diabetic and 400 nondiabetic from the various hospitals of the Udupi district. Demographics, socioeconomic status, oral hygiene practices, oral abusive habits, and history of type 2 diabetes were collected using an interviewer-administered questionnaire followed by an intraoral examination to assess root caries. The primary outcome measure was the presence of any carious or filled root surface. Binary logistic regression univariate analysis was done for all the predictor variables, and those with significant associations were further analyzed by multivariate analysis with the enter method in a single-step model. An appropriate nomogram was designed for risk prediction.</p><p><strong>Results: </strong>Overall, the root caries prevalence was 37.3%, and the mean root caries index was 14.28%. The prevalence of root caries was 46% in people with diabetes and 28.5% in nondiabetics. Participants with type 2 diabetes, less education, low socioeconomic status, and using finger cleaning had a significantly higher risk of developing root caries. Additionally, those who used removable partial dentures (RPDs) were found to be 4.65 times more likely to have root caries than those who did not use RPDs.</p><p><strong>Conclusion: </strong>Elderly diabetics are at a higher risk for developing root caries and are strongly advised to maintain good oral hygiene practices and to undergo periodic dental evaluations. Therefore, it is crucial to emphasize early diagnosis and treatment of root caries in this population.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"9963917"},"PeriodicalIF":0.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11300050/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal and Nonthermal Effects of 5 G Radio-Waves on Human's Tissue. 5 G 无线电波对人体组织的热效应和非热效应
Q2 Environmental Science Pub Date : 2024-07-24 eCollection Date: 2024-01-01 DOI: 10.1155/2024/3801604
Yahia Hasan Jazyah

The deployment of 5 G wireless technology has generated considerable interest and debate regarding its potential effects on human health. This work provides a comprehensive overview of the current scientific understanding of the potential health implications associated with 5 G technology. Drawing upon a wide range of research studies, reviews, and expert opinions, we explore the implications through which 5 G signals interact with the human body. This work presents a balanced perspective, summarizing both the potential benefits of 5 G technology, such as improved data transfer speeds, reduced latency, and enhanced connectivity, as well as concerns that have been raised about its effects on human's tissues. We discuss various aspects of health impacts, including thermal and nonthermal effects, focusing on the existing research on radiofrequency electromagnetic fields and their potential to cause adverse health outcomes. Simulation results show the negative effect of radio waves on human's tissues.

5 G 无线技术的部署引起了人们对其对人类健康潜在影响的极大兴趣和讨论。本研究全面概述了目前科学界对 5 G 技术对健康的潜在影响的认识。通过广泛的研究、评论和专家意见,我们探讨了 5 G 信号与人体相互作用的影响。这项研究提出了一个平衡的视角,既总结了 5 G 技术的潜在优势,如提高数据传输速度、减少延迟和增强连接性,也提出了对人体组织影响的担忧。我们讨论了健康影响的各个方面,包括热效应和非热效应,重点是现有的射频电磁场研究及其导致不良健康后果的可能性。模拟结果显示了无线电波对人体组织的负面影响。
{"title":"Thermal and Nonthermal Effects of 5 G Radio-Waves on Human's Tissue.","authors":"Yahia Hasan Jazyah","doi":"10.1155/2024/3801604","DOIUrl":"10.1155/2024/3801604","url":null,"abstract":"<p><p>The deployment of 5 G wireless technology has generated considerable interest and debate regarding its potential effects on human health. This work provides a comprehensive overview of the current scientific understanding of the potential health implications associated with 5 G technology. Drawing upon a wide range of research studies, reviews, and expert opinions, we explore the implications through which 5 G signals interact with the human body. This work presents a balanced perspective, summarizing both the potential benefits of 5 G technology, such as improved data transfer speeds, reduced latency, and enhanced connectivity, as well as concerns that have been raised about its effects on human's tissues. We discuss various aspects of health impacts, including thermal and nonthermal effects, focusing on the existing research on radiofrequency electromagnetic fields and their potential to cause adverse health outcomes. Simulation results show the negative effect of radio waves on human's tissues.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"3801604"},"PeriodicalIF":0.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11300075/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Outcomes and Its Associated Factors among Patients with Abdominal Trauma Requiring Laparotomy at Asella Referral and Teaching Hospital, South Central Ethiopia: A Retrospective Cross-Sectional Study. 埃塞俄比亚中南部阿塞拉转诊和教学医院需要开腹手术的腹部创伤患者的预后及其相关因素:一项回顾性横断面研究。
Q2 Environmental Science Pub Date : 2024-07-23 eCollection Date: 2024-01-01 DOI: 10.1155/2024/5572633
Wegene Tadesse Shenkutie, Taha Kaso, Abdene Weya Kaso, Gebi Agero

Trauma is a serious public health problem, and abdominal injuries are among the leading causes of hospitalization after trauma. Therefore, this study aimed to determine the outcome of abdominal trauma and its predictors in patients who underwent laparotomy at Asella Referral and Teaching Hospital (ARTH), South Central Ethiopia. We conducted a retrospective institutional based cross-sectional study of patients who underwent laparotomy for abdominal trauma at ARTH from October 1, 2015, to September 30, 2020. Bivariate and multivariate logistic regressions were used to determine associations between independent factors and mortality due to abdominal trauma, and a P value of <0.05 indicated statistical significance. Out of 139 patients, 110 (79.1%) were males and 88 (63.3%) aged <30 years old, with a mean age of 29 ± 15.73 years. The most common mechanism of injury was penetrating trauma, which accounted for 94 (67.6%) patients. The mortality rate was 21 (15.1%). Factors such as blunt mechanism of injury (95% CI: AOR: 3.36, 1.24-9.09), SBP < 90 mmHg at presentation (95% CI: AOR = 9.37, 3.28-26.80), time >6 hours from trauma to admission (95% CI: AOR: 5.44, 1.78-16.63), unstable intraoperative patient condition (95% CI: AOR = 8.82, 3.05-25.52), and patients who need blood transfusion (95% CI: AOR: 6.63, 1.92-22.91) were significantly associated with mortality. The mortality rate of abdominal trauma patients who underwent laparotomy was high. Therefore, healthcare providers should provide priority for traumatic patients as prolonged waiting time to get healthcare results in poor outcomes for the patients.

创伤是一个严重的公共卫生问题,而腹部创伤是创伤后住院的主要原因之一。因此,本研究旨在确定在埃塞俄比亚中南部阿塞拉转诊和教学医院(ARTH)接受开腹手术的患者腹部创伤的结果及其预测因素。我们对2015年10月1日至2020年9月30日期间在ARTH接受腹部创伤开腹手术的患者进行了一项基于机构的回顾性横断面研究。我们使用二元和多元逻辑回归来确定腹部创伤导致的死亡率与独立因素之间的关联,从创伤到入院6小时(95% CI:AOR:5.44,1.78-16.63)、术中患者病情不稳定(95% CI:AOR=8.82,3.05-25.52)和需要输血的患者(95% CI:AOR:6.63,1.92-22.91)的P值与死亡率显著相关。接受开腹手术的腹部创伤患者死亡率较高。因此,医疗服务提供者应优先照顾外伤患者,因为长时间等待医疗服务会导致患者的不良后果。
{"title":"Outcomes and Its Associated Factors among Patients with Abdominal Trauma Requiring Laparotomy at Asella Referral and Teaching Hospital, South Central Ethiopia: A Retrospective Cross-Sectional Study.","authors":"Wegene Tadesse Shenkutie, Taha Kaso, Abdene Weya Kaso, Gebi Agero","doi":"10.1155/2024/5572633","DOIUrl":"10.1155/2024/5572633","url":null,"abstract":"<p><p>Trauma is a serious public health problem, and abdominal injuries are among the leading causes of hospitalization after trauma. Therefore, this study aimed to determine the outcome of abdominal trauma and its predictors in patients who underwent laparotomy at Asella Referral and Teaching Hospital (ARTH), South Central Ethiopia. We conducted a retrospective institutional based cross-sectional study of patients who underwent laparotomy for abdominal trauma at ARTH from October 1, 2015, to September 30, 2020. Bivariate and multivariate logistic regressions were used to determine associations between independent factors and mortality due to abdominal trauma, and a <i>P</i> value of <0.05 indicated statistical significance. Out of 139 patients, 110 (79.1%) were males and 88 (63.3%) aged <30 years old, with a mean age of 29 ± 15.73 years. The most common mechanism of injury was penetrating trauma, which accounted for 94 (67.6%) patients. The mortality rate was 21 (15.1%). Factors such as blunt mechanism of injury (95% CI: AOR: 3.36, 1.24-9.09), SBP < 90 mmHg at presentation (95% CI: AOR = 9.37, 3.28-26.80), time >6 hours from trauma to admission (95% CI: AOR: 5.44, 1.78-16.63), unstable intraoperative patient condition (95% CI: AOR = 8.82, 3.05-25.52), and patients who need blood transfusion (95% CI: AOR: 6.63, 1.92-22.91) were significantly associated with mortality. The mortality rate of abdominal trauma patients who underwent laparotomy was high. Therefore, healthcare providers should provide priority for traumatic patients as prolonged waiting time to get healthcare results in poor outcomes for the patients.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"5572633"},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11288692/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141856559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Lingual Agnostic Information Retrieval System. 语言无关的信息检索系统
Q2 Environmental Science Pub Date : 2024-07-23 eCollection Date: 2024-01-01 DOI: 10.1155/2024/6949281
Umar Bn Abdullahi, Godspower Osaretin Ekuobase

The exclusion of monolingual natives from cyberspace is a global socioeconomic and cultural problem. Efforts at addressing this problem have been socioeconomic, culminating in training, empowerment, and digital access with the indelible hurt of language inequities. This paper is aimed at the cyber-inclusion of monolingual natives. Since cyber participation is basically through human interaction with cyber-applications in a human language, encapsulating these applications for interaction in any human language will help evade the hurt of language inequities. Information retrieval system (IRS) remains a fundamental cyber-application. Consequently, adopting the design science research methodology, we introduced a lingual agnostic IRS architecture designed on the principle of transparency on user language detection, information translations, and caching. The detailed design of the architecture was done using the unified modeling language. The designed IRS architecture has been implemented using the agile and component-based software engineering approaches. The resultant lingual agnostic IRS (LAIRS) was evaluated using heuristics and system evaluation methods for parity of language of interaction against the default language and was excellently stable across queries and languages, guaranteeing 86% parity with the default language in the use of other languages for information access and retrieval. Furthermore, it has been shown that LAIRS is the most appropriate IRS to address the problem of language barriers to cyber-inclusion compared with existing IRSs.

网络空间排斥单一语言的本地人是一个全球性的社会经济和文化问题。为解决这一问题所做的努力是社会经济方面的,最终是培训、赋权和数字接入,但语言不平等造成的伤害是不可磨灭的。本文的目的是让单语本地人融入网络。由于网络参与基本上是通过人类与使用人类语言的网络应用程序的互动来实现的,因此将这些应用程序封装起来,以便使用任何人类语言进行互动,将有助于避免语言不平等带来的伤害。信息检索系统(IRS)仍然是一种基本的网络应用程序。因此,我们采用设计科学的研究方法,在用户语言检测、信息翻译和缓存透明化的原则基础上,引入了一种语言无关的 IRS 架构。架构的详细设计使用统一建模语言完成。设计的 IRS 架构采用敏捷和基于组件的软件工程方法实施。使用启发式和系统评估方法对所产生的语言不可知 IRS(LAIRS)进行了评估,以确定交互语言与默认语言的等同性,结果表明该系统在不同查询和语言之间都非常稳定,在使用其他语言进行信息访问和检索时,保证了 86% 的等同性。此外,研究还表明,与现有的 IRS 相比,LAIRS 是最适合解决网络包容语言障碍问题的 IRS。
{"title":"A Lingual Agnostic Information Retrieval System.","authors":"Umar Bn Abdullahi, Godspower Osaretin Ekuobase","doi":"10.1155/2024/6949281","DOIUrl":"https://doi.org/10.1155/2024/6949281","url":null,"abstract":"<p><p>The exclusion of monolingual natives from cyberspace is a global socioeconomic and cultural problem. Efforts at addressing this problem have been socioeconomic, culminating in training, empowerment, and digital access with the indelible hurt of language inequities. This paper is aimed at the cyber-inclusion of monolingual natives. Since cyber participation is basically through human interaction with cyber-applications in a human language, encapsulating these applications for interaction in any human language will help evade the hurt of language inequities. Information retrieval system (IRS) remains a fundamental cyber-application. Consequently, adopting the design science research methodology, we introduced a lingual agnostic IRS architecture designed on the principle of transparency on user language detection, information translations, and caching. The detailed design of the architecture was done using the unified modeling language. The designed IRS architecture has been implemented using the agile and component-based software engineering approaches. The resultant lingual agnostic IRS (LAIRS) was evaluated using heuristics and system evaluation methods for parity of language of interaction against the default language and was excellently stable across queries and languages, guaranteeing 86% parity with the default language in the use of other languages for information access and retrieval. Furthermore, it has been shown that LAIRS is the most appropriate IRS to address the problem of language barriers to cyber-inclusion compared with existing IRSs.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"6949281"},"PeriodicalIF":0.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11390192/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142296103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental Investigation and Performance Evaluation of Jatropha Oil-Biodiesel Blending with Kerosene for Domestic Cooking and Lighting Applications. 麻风树油-生物柴油与煤油混合用于家庭烹饪和照明的实验研究和性能评估。
Q2 Environmental Science Pub Date : 2024-07-22 eCollection Date: 2024-01-01 DOI: 10.1155/2024/7758441
Eshetu Getahun, Kefale Wagaw

Reducing indoor air pollution and the related costs requires developing efficient cooking and lighting technologies as well as alternative energy sources. The appropriateness of virgin jatropha (Jatropha curcas) oil, its biodiesel, and the blending of these fuels with kerosene for wick stove lighting and cooking was examined in this study. To describe the fuel performance, a range of blending ratios were examined and characterizations were made of the fuel's density, calorific value, boiling point, viscosity, and rate of fuel consumption. To assess the fuels' thermal degradation behaviors, thermogravimetric and water boiling tests were performed. An air pollution meter was used to describe the levels of indoor air pollution. According to the findings, the virgin oil from Jatropha has a kinematic viscosity of 30.1 mm2/s. The 50% jatropha oil and 80% biodiesel blended with kerosene showed a reduction in viscosity of 72.6% and 46.8%, respectively. The thermal efficiency of the virgin oil, its biodiesel, and blending of these fuels with kerosene was in the range of 10-48%. Complete degradation of jatropha oil, its biodiesel, and 40 : 60 ratio of jatropha biodiesel and kerosene blend was conducted in the temperature range of 480-700 k, 185-280.6 K, and 100-300 K, respectively. The activation energies of jatropha oil, biodiesel, and kerosene blend (40 : 60) were 191.3, 73, and 25 kJ/mol, respectively. The average concentrations of particulate matter and carbon monoxide for pure jatropha oil biodiesel were 209.71 µg/m3 and 5.5 mg/kg, respectively. Thus, jatropha biodiesel and its blending with kerosene are suitable fuels for cooking and lighting operations in rural communities who are living far from the electrical grid compared with virgin oil fuel.

要减少室内空气污染并降低相关成本,就必须开发高效的烹饪和照明技术以及替代能源。本研究考察了原始麻疯树油、麻疯树生物柴油以及这些燃料与煤油混合后用于灯芯炉照明和烹饪的适宜性。为了描述燃料的性能,研究了一系列混合比例,并对燃料的密度、热值、沸点、粘度和燃料消耗率进行了表征。为了评估燃料的热降解行为,还进行了热重和水沸试验。还使用了空气污染测量仪来描述室内空气污染水平。研究结果表明,麻疯树原油的运动粘度为 30.1 mm2/s。50% 的麻风树油和 80% 的生物柴油与煤油混合后,粘度分别降低了 72.6% 和 46.8%。原油、生物柴油以及这些燃料与煤油混合后的热效率在 10-48% 之间。麻风树油、麻风树生物柴油以及麻风树生物柴油与煤油混合比例为 40 : 60 的燃料的完全降解分别在 480-700 k、185-280.6 K 和 100-300 K 的温度范围内进行。麻风树油、生物柴油和煤油混合物(40 : 60)的活化能分别为 191.3、73 和 25 kJ/mol。纯麻疯树油生物柴油的颗粒物和一氧化碳平均浓度分别为 209.71 µg/m3 和 5.5 mg/kg。因此,与原油燃料相比,麻风树生物柴油及其与煤油的混合燃料适用于远离电网的农村社区的烹饪和照明作业。
{"title":"Experimental Investigation and Performance Evaluation of Jatropha Oil-Biodiesel Blending with Kerosene for Domestic Cooking and Lighting Applications.","authors":"Eshetu Getahun, Kefale Wagaw","doi":"10.1155/2024/7758441","DOIUrl":"https://doi.org/10.1155/2024/7758441","url":null,"abstract":"<p><p>Reducing indoor air pollution and the related costs requires developing efficient cooking and lighting technologies as well as alternative energy sources. The appropriateness of virgin jatropha (Jatropha curcas) oil, its biodiesel, and the blending of these fuels with kerosene for wick stove lighting and cooking was examined in this study. To describe the fuel performance, a range of blending ratios were examined and characterizations were made of the fuel's density, calorific value, boiling point, viscosity, and rate of fuel consumption. To assess the fuels' thermal degradation behaviors, thermogravimetric and water boiling tests were performed. An air pollution meter was used to describe the levels of indoor air pollution. According to the findings, the virgin oil from Jatropha has a kinematic viscosity of 30.1 mm<sup>2</sup>/s. The 50% jatropha oil and 80% biodiesel blended with kerosene showed a reduction in viscosity of 72.6% and 46.8%, respectively. The thermal efficiency of the virgin oil, its biodiesel, and blending of these fuels with kerosene was in the range of 10-48%. Complete degradation of jatropha oil, its biodiesel, and 40 : 60 ratio of jatropha biodiesel and kerosene blend was conducted in the temperature range of 480-700 k, 185-280.6 K, and 100-300 K, respectively. The activation energies of jatropha oil, biodiesel, and kerosene blend (40 : 60) were 191.3, 73, and 25 kJ/mol, respectively. The average concentrations of particulate matter and carbon monoxide for pure jatropha oil biodiesel were 209.71 <i>µ</i>g/m<sup>3</sup> and 5.5 mg/kg, respectively. Thus, jatropha biodiesel and its blending with kerosene are suitable fuels for cooking and lighting operations in rural communities who are living far from the electrical grid compared with virgin oil fuel.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"7758441"},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11458284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142393578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of Noise Levels of Churches in the Kpone Katamanso Municipal Assembly in Ghana. 加纳 Kpone Katamanso 市议会教堂噪音水平评估。
Q2 Environmental Science Pub Date : 2024-07-18 eCollection Date: 2024-01-01 DOI: 10.1155/2024/6674297
Lyndon N A Sackey, Joel Abugre, Bernard Fei-Baffoe, Ebenezer Y E Amuah, Richmond Yeboah Amoako

Different sound levels are encountered by pastors, ministers, and the whole congregation during church services, which may extend for hours, and also by people living close to these churches. This can have an adverse effect on their health. The maximum allowable noise level in worship places is 65 dB (A), according to the Ghana Standards Authority (GSA). The aim of the study was to quantify the noise pollution levels of the churches in Kpone Katamanso Municipal Assembly (KKMA) and assess the equivalent noise levels of the churches' indoor and outdoor spaces. This investigation is being conducted due to the high number of churches and the noise emanating from these churches in the Kpone Katamanso Municipality and the possible impact on human health. Thirty churches were chosen at random for the study; on Sundays between the hours of 7.30 and 12.0 pm, sound levels in churches were measured using a portable General Class 1 Meter type DSM403SD with a data logging system. MS Excel was used to evaluate the data and determine characteristics including noise exposure levels (NEL), background noise level (L 90), severe noise level (L 10), and equivalent noise level (L eq). The indoor equivalent noise level ranges from 74.5 dB (A) to 104.1 dB (A), and the outdoor equivalent noise level ranges from 52.6 dB (A) to 85.3 dB (A). All of the noise levels found indoors of the churches were greater than the 65 dB (A) safe allowable limit, putting the congregants and residents at risk for a variety of physiological and psychological problems.

牧师、传道人和全体会众在教堂做礼拜(可能长达数小时)时,以及在教堂附近居住的人都会遇到不同的声级。这可能会对他们的健康产生不利影响。根据加纳标准局 (GSA) 的规定,礼拜场所的最高允许噪音水平为 65 分贝 (A)。这项研究的目的是量化 Kpone Katamanso 市议会(KKMA)教堂的噪音污染水平,并评估教堂室内和室外空间的等效噪音水平。进行这项调查的原因是 Kpone Katamanso 市教堂数量众多,这些教堂发出的噪音可能会对人体健康造成影响。随机选择了 30 座教堂进行研究;在周日下午 7:30 至 12:0 之间,使用带数据记录系统的 DSM403SD 型便携式通用 1 级测量仪测量教堂的声级。使用 MS Excel 评估数据并确定特征,包括噪声暴露水平(NEL)、背景噪声水平(L 90)、严重噪声水平(L 10)和等效噪声水平(L eq)。室内等效噪音水平从 74.5 分贝(A)到 104.1 分贝(A)不等,室外等效噪音水平从 52.6 分贝(A)到 85.3 分贝(A)不等。所有发现的教堂室内噪音水平都高于 65 分贝(A)的安全允许限值,使教徒和居民面临各种生理和心理问题的风险。
{"title":"Assessment of Noise Levels of Churches in the Kpone Katamanso Municipal Assembly in Ghana.","authors":"Lyndon N A Sackey, Joel Abugre, Bernard Fei-Baffoe, Ebenezer Y E Amuah, Richmond Yeboah Amoako","doi":"10.1155/2024/6674297","DOIUrl":"10.1155/2024/6674297","url":null,"abstract":"<p><p>Different sound levels are encountered by pastors, ministers, and the whole congregation during church services, which may extend for hours, and also by people living close to these churches. This can have an adverse effect on their health. The maximum allowable noise level in worship places is 65 dB (A), according to the Ghana Standards Authority (GSA). The aim of the study was to quantify the noise pollution levels of the churches in Kpone Katamanso Municipal Assembly (KKMA) and assess the equivalent noise levels of the churches' indoor and outdoor spaces. This investigation is being conducted due to the high number of churches and the noise emanating from these churches in the Kpone Katamanso Municipality and the possible impact on human health. Thirty churches were chosen at random for the study; on Sundays between the hours of 7.30 and 12.0 pm, sound levels in churches were measured using a portable General Class 1 Meter type DSM403SD with a data logging system. MS Excel was used to evaluate the data and determine characteristics including noise exposure levels (NEL), background noise level (<i>L</i> <sub>90</sub>), severe noise level (<i>L</i> <sub>10</sub>), and equivalent noise level (<i>L</i> <sub>eq</sub>). The indoor equivalent noise level ranges from 74.5 dB (A) to 104.1 dB (A), and the outdoor equivalent noise level ranges from 52.6 dB (A) to 85.3 dB (A). All of the noise levels found indoors of the churches were greater than the 65 dB (A) safe allowable limit, putting the congregants and residents at risk for a variety of physiological and psychological problems.</p>","PeriodicalId":22985,"journal":{"name":"The Scientific World Journal","volume":"2024 ","pages":"6674297"},"PeriodicalIF":0.0,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11272399/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141761055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
The Scientific World Journal
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1