首页 > 最新文献

MethodsX最新文献

英文 中文
Natural logarithm particle swarm optimization for loss reduction in an island power system 自然对数粒子群优化用于降低岛屿电力系统的损耗
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-20 DOI: 10.1016/j.mex.2024.102924

In an island power system, optimizing energy management is fundamental since there are renewable sources with their limitations. This management includes the allocation and capacity of energy sources to supply the loads. In this context, optimizing losses in the system contributes to improve the efficiency of this management. This paper proposes the losses optimization and energy management in the island power system. The authors propose the Natural Logarithm Particle Swarm Optimization to solve the problem and compare it with the Attractor Point Algorithm and Evolutionary Particle Swarm Optimization. And with that, we also propose a particle initialization for the studied particle-based algorithms to guarantee convergence in radial power systems. This is because the system configuration influences the response of the algorithm convergence. These techniques were applied to the IEEE-34 unbalanced radial island system.

  • Natural Logarithm Particle Swarm Optimization differs from classical PSO in that it does not calculate the velocity of the particles. Therefore, the method considers a cloud of particles with a natural logarithmic trajectory to solve the reduction of losses in a power system with a radial topology.

  • Natural Logarithmic Particle Swarm Optimization uses an initialization equation to minimize the initial estimation process, which is relevant to the convergence process.

在岛屿电力系统中,优化能源管理至关重要,因为可再生能源有其局限性。这种管理包括能源的分配和容量,以便为负载供电。在这种情况下,优化系统中的损耗有助于提高能源管理的效率。本文提出了岛屿电力系统中的损耗优化和能源管理。作者提出了自然对数粒子群优化算法来解决这个问题,并将其与吸引点算法和进化粒子群优化算法进行了比较。与此同时,我们还为所研究的基于粒子的算法提出了一种粒子初始化方法,以保证在径向电力系统中的收敛性。这是因为系统配置会影响算法收敛的响应。这些技术已应用于 IEEE-34 不平衡径向岛系统。因此,该方法考虑了具有自然对数轨迹的粒子云,以解决减少具有径向拓扑结构的电力系统中的损耗问题。-自然对数粒子群优化使用初始化方程来最小化初始估计过程,这与收敛过程有关。
{"title":"Natural logarithm particle swarm optimization for loss reduction in an island power system","authors":"","doi":"10.1016/j.mex.2024.102924","DOIUrl":"10.1016/j.mex.2024.102924","url":null,"abstract":"<div><p>In an island power system, optimizing energy management is fundamental since there are renewable sources with their limitations. This management includes the allocation and capacity of energy sources to supply the loads. In this context, optimizing losses in the system contributes to improve the efficiency of this management. This paper proposes the losses optimization and energy management in the island power system. The authors propose the Natural Logarithm Particle Swarm Optimization to solve the problem and compare it with the Attractor Point Algorithm and Evolutionary Particle Swarm Optimization. And with that, we also propose a particle initialization for the studied particle-based algorithms to guarantee convergence in radial power systems. This is because the system configuration influences the response of the algorithm convergence. These techniques were applied to the IEEE-34 unbalanced radial island system.</p><ul><li><span>•</span><span><p>Natural Logarithm Particle Swarm Optimization differs from classical PSO in that it does not calculate the velocity of the particles. Therefore, the method considers a cloud of particles with a natural logarithmic trajectory to solve the reduction of losses in a power system with a radial topology.</p></span></li><li><span>•</span><span><p>Natural Logarithmic Particle Swarm Optimization uses an initialization equation to minimize the initial estimation process, which is relevant to the convergence process.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003753/pdfft?md5=6c32dbac50e70cbfbcfff0c783863733&pid=1-s2.0-S2215016124003753-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048988","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
Utilizing decellularized bio-membranes to optimize histopathological embedding of small tissues 利用脱细胞生物膜优化小组织的组织病理学包埋
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-20 DOI: 10.1016/j.mex.2024.102919

In recent years, minimally invasive biopsy techniques have been widely used to generate small tissue samples that require processing in clinical pathology. However, small paraffin-embedded tissues are prone to loss due to their small size. To prevent the loss of small tissues, researchers have employed nonbiological embedding materials for preembedding, but this approach can lead to cumbersome experimental procedures and increase the chances of tissue loss. This study aimed to develop a convenient decellularized embedding material derived from biological membrane tissues to effectively protect small tissues from loss during paraffin embedding. This study decellularized three types of fresh animal-derived membrane tissues and selected the small intestine as the most suitable decellularized raw material through attempts at softening, comparing physical properties, and using tissue as the starting material. Subsequently, small tissues from various tissue sources were embedded, followed by H&E staining, Masson staining, immunofluorescence staining, and immunohistochemical staining. The decellularized material derived from biomembrane tissues (DMBT) developed in this study can reduce the loss of small tissues without the need for preembedding, thereby shortening the embedding process. This provides a new pathological embedding tool for future laboratory and clinical research and work.

  • The fat layer of the pig's small intestine is scraped off, and chemical reagents are used to defat and decellularize it.

  • Chemical reagents are used to soften and make the pig's small intestine transparent, and the decellularized pig's small intestine is dried.

  • DMBT is used for embedding and staining the biological tissue.

近年来,微创活检技术已被广泛应用于产生需要在临床病理学中处理的小组织样本。然而,石蜡包埋的小组织由于体积小,容易丢失。为了防止小型组织的丢失,研究人员采用了非生物包埋材料进行预包埋,但这种方法会导致实验过程繁琐,增加组织丢失的几率。本研究旨在开发一种源自生物膜组织的便捷脱细胞包埋材料,以有效保护小组织在石蜡包埋过程中免受损失。本研究对三种新鲜动物来源的膜组织进行脱细胞处理,并通过软化、比较物理性质和以组织为起始材料等尝试,选择小肠作为最合适的脱细胞原料。随后,对不同组织来源的小组织进行包埋,然后进行 H&E 染色、Masson 染色、免疫荧光染色和免疫组化染色。本研究开发的生物膜组织脱细胞材料(DMBT)无需预包埋即可减少小组织的损失,从而缩短了包埋过程。刮掉猪小肠的脂肪层,用化学试剂对其进行脱脂和脱细胞处理,用化学试剂软化猪小肠并使其透明,然后将脱细胞的猪小肠干燥,用 DMBT 对生物组织进行包埋和染色。
{"title":"Utilizing decellularized bio-membranes to optimize histopathological embedding of small tissues","authors":"","doi":"10.1016/j.mex.2024.102919","DOIUrl":"10.1016/j.mex.2024.102919","url":null,"abstract":"<div><p>In recent years, minimally invasive biopsy techniques have been widely used to generate small tissue samples that require processing in clinical pathology. However, small paraffin-embedded tissues are prone to loss due to their small size. To prevent the loss of small tissues, researchers have employed nonbiological embedding materials for preembedding, but this approach can lead to cumbersome experimental procedures and increase the chances of tissue loss. This study aimed to develop a convenient decellularized embedding material derived from biological membrane tissues to effectively protect small tissues from loss during paraffin embedding. This study decellularized three types of fresh animal-derived membrane tissues and selected the small intestine as the most suitable decellularized raw material through attempts at softening, comparing physical properties, and using tissue as the starting material. Subsequently, small tissues from various tissue sources were embedded, followed by H&amp;E staining, Masson staining, immunofluorescence staining, and immunohistochemical staining. The decellularized material derived from biomembrane tissues (DMBT) developed in this study can reduce the loss of small tissues without the need for preembedding, thereby shortening the embedding process. This provides a new pathological embedding tool for future laboratory and clinical research and work.</p><ul><li><span>•</span><span><p>The fat layer of the pig's small intestine is scraped off, and chemical reagents are used to defat and decellularize it.</p></span></li><li><span>•</span><span><p>Chemical reagents are used to soften and make the pig's small intestine transparent, and the decellularized pig's small intestine is dried.</p></span></li><li><span>•</span><span><p>DMBT is used for embedding and staining the biological tissue.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003704/pdfft?md5=2526023c0543a8493e2337251d4f59f0&pid=1-s2.0-S2215016124003704-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083491","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
Harnessing deep learning for detection of diabetic retinopathy in geriatric group using optical coherence tomography angiography-OCTA: A promising approach 利用深度学习,使用光学相干断层血管造影-OCTA 检测老年群体的糖尿病视网膜病变:一种前景广阔的方法
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-20 DOI: 10.1016/j.mex.2024.102910

The prevalence of diabetic retinopathy (DR) among the geriatric population poses significant challenges for early detection and management. Optical Coherence Tomography Angiography (OCTA) combined with Deep Learning presents a promising avenue for improving diagnostic accuracy in this vulnerable demographic. In this method, we propose an innovative approach utilizing OCTA images and Deep Learning algorithms to detect diabetic retinopathy in geriatric patients. We have collected 262 OCTA scans of 179 elderly individuals, both with and without diabetes, and trained a deep-learning model to classify retinopathy severity levels. Convolutional Neural Network (CNN) models: Inception V3, ResNet-50, ResNet50V2, VggNet-16, VggNet-19, DenseNet121, DenseNet201, EfficientNetV2B0, are trained to extract features and further classify them.

Here we demonstrate:

  • The potential of OCTA and Deep Learning in enhancing geriatric eye care at the very initial stage.

  • The importance of technological advancements in addressing age-related ocular diseases and providing reliable assistance to clinicians for DR classification.

  • The efficacy of this approach in accurately identifying diabetic retinopathy stages, thereby facilitating timely interventions, and preventing vision loss in the elderly population.

糖尿病视网膜病变(DR)在老年人群中的发病率给早期检测和管理带来了巨大挑战。光学相干断层扫描血管造影术(OCTA)与深度学习相结合,为提高这一易患人群的诊断准确性提供了一条大有可为的途径。在本方法中,我们提出了一种利用 OCTA 图像和深度学习算法检测老年患者糖尿病视网膜病变的创新方法。我们收集了 179 名老年人的 262 张 OCTA 扫描图像,其中既有糖尿病患者也有非糖尿病患者,并训练了一个深度学习模型来对视网膜病变的严重程度进行分类。卷积神经网络(CNN)模型:Inception V3、ResNet-50、ResNet50V2、VggNet-16、VggNet-19、DenseNet121、DenseNet201、EfficientNetV2B0 接受训练,以提取特征并进一步分类。-技术进步在解决与年龄相关的眼部疾病以及为临床医生进行 DR 分类提供可靠帮助方面的重要性。
{"title":"Harnessing deep learning for detection of diabetic retinopathy in geriatric group using optical coherence tomography angiography-OCTA: A promising approach","authors":"","doi":"10.1016/j.mex.2024.102910","DOIUrl":"10.1016/j.mex.2024.102910","url":null,"abstract":"<div><p>The prevalence of diabetic retinopathy (DR) among the geriatric population poses significant challenges for early detection and management. Optical Coherence Tomography Angiography (OCTA) combined with Deep Learning presents a promising avenue for improving diagnostic accuracy in this vulnerable demographic. In this method, we propose an innovative approach utilizing OCTA images and Deep Learning algorithms to detect diabetic retinopathy in geriatric patients. We have collected 262 OCTA scans of 179 elderly individuals, both with and without diabetes, and trained a deep-learning model to classify retinopathy severity levels. Convolutional Neural Network (CNN) models: Inception V3, ResNet-50, ResNet50V2, VggNet-16, VggNet-19, DenseNet121, DenseNet201, EfficientNetV2B0, are trained to extract features and further classify them.</p><p>Here we demonstrate:</p><ul><li><span>•</span><span><p>The potential of OCTA and Deep Learning in enhancing geriatric eye care at the very initial stage.</p></span></li><li><span>•</span><span><p>The importance of technological advancements in addressing age-related ocular diseases and providing reliable assistance to clinicians for DR classification.</p></span></li><li><span>•</span><span><p>The efficacy of this approach in accurately identifying diabetic retinopathy stages, thereby facilitating timely interventions, and preventing vision loss in the elderly population.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003625/pdfft?md5=245062457c1d67dbd7e98797f7648ea8&pid=1-s2.0-S2215016124003625-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083223","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
Optimization of cassava (Manihot esculenta Crantz) grafting technique to enhance its adoption in cassava cultivation 优化木薯(Manihot esculenta Crantz)嫁接技术,促进其在木薯种植中的应用
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-19 DOI: 10.1016/j.mex.2024.102904

Grafting techniques have been successfully adopted to improve resistance to biotic and abiotic stresses, increase yields, fruit quality and study systemic signaling in plants. This technique has not been fully explored in cassava and there is currently no standardized grafting method for this species published especially in Africa. This is the first report on cassava grafting protocol in Africa with valuable advantages including utilizing a cost-effective and environmentally friendly wooden healing chamber. In this study, we describe an optimized cleft grafting protocol for cassava utilizing a wooden healing chamber and outline the step-by-step procedure with optimum conditions to generate a high grafting success rate. Using a top wedge grafting technique with high reproducibility and success rates, we developed a straightforward and robust grafting protocol for cassava (M. esculenta) cultivars. Grafting success was recorded and this protocol produced a high grafting success of 90 % and its reproducibility makes it suitable for mass production thereby addressing the need for efficient cassava propagation. This grafting protocol requires less specialized equipment and expertise making it more accessible to farmers and researchers with limited resources to promote the use of grafting for cassava growth, yield improvement and advanced studies such as systemic long-distance signaling in plants.

  • Optimization of cleft grafting method obtains a high success grafting rate of cassava.

  • A wooden healing chamber provides a controlled environment for graft healing.

  • Promoting cassava grafting; a priority to produce new cultivars and explore breeding research prospects.

嫁接技术已被成功应用于提高对生物和非生物胁迫的抗性、增加产量、提高果实质量和研究植物的系统信号传递。这项技术尚未在木薯上得到充分应用,目前还没有针对该物种的标准化嫁接方法,尤其是在非洲。这是第一份关于非洲木薯嫁接规程的报告,该规程具有宝贵的优势,包括利用成本效益高且环保的木质愈合室。在这项研究中,我们描述了利用木质愈合室进行木薯裂隙嫁接的优化方案,并概述了产生高嫁接成功率的最佳条件下的分步程序。利用具有高重现性和高成功率的顶楔嫁接技术,我们为木薯(M. esculenta)栽培品种开发出了一种简单、稳健的嫁接方案。对嫁接成功率进行了记录,该方案的嫁接成功率高达 90%,其可重复性使其适用于大规模生产,从而满足了高效木薯繁殖的需求。这种嫁接方法对专业设备和专业知识的要求较低,因此更容易为资源有限的农民和研究人员所接受,从而促进了嫁接在木薯生长、产量提高和植物系统性远距离信号传递等高级研究中的应用。
{"title":"Optimization of cassava (Manihot esculenta Crantz) grafting technique to enhance its adoption in cassava cultivation","authors":"","doi":"10.1016/j.mex.2024.102904","DOIUrl":"10.1016/j.mex.2024.102904","url":null,"abstract":"<div><p>Grafting techniques have been successfully adopted to improve resistance to biotic and abiotic stresses, increase yields, fruit quality and study systemic signaling in plants. This technique has not been fully explored in cassava and there is currently no standardized grafting method for this species published especially in Africa. This is the first report on cassava grafting protocol in Africa with valuable advantages including utilizing a cost-effective and environmentally friendly wooden healing chamber. In this study, we describe an optimized cleft grafting protocol for cassava utilizing a wooden healing chamber and outline the step-by-step procedure with optimum conditions to generate a high grafting success rate. Using a top wedge grafting technique with high reproducibility and success rates, we developed a straightforward and robust grafting protocol for cassava (<em>M. esculenta</em>) cultivars. Grafting success was recorded and this protocol produced a high grafting success of 90 % and its reproducibility makes it suitable for mass production thereby addressing the need for efficient cassava propagation. This grafting protocol requires less specialized equipment and expertise making it more accessible to farmers and researchers with limited resources to promote the use of grafting for cassava growth, yield improvement and advanced studies such as systemic long-distance signaling in plants.</p><ul><li><span>•</span><span><p>Optimization of cleft grafting method obtains a high success grafting rate of cassava.</p></span></li><li><span>•</span><span><p>A wooden healing chamber provides a controlled environment for graft healing.</p></span></li><li><span>•</span><span><p>Promoting cassava grafting; a priority to produce new cultivars and explore breeding research prospects.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221501612400356X/pdfft?md5=586ccde02902376b8ee749566676d624&pid=1-s2.0-S221501612400356X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048986","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
Methods for degrading dicloxacillin in water using inorganic peroxides and their combination with UVC- experimental and theoretical aspects 利用无机过氧化物及其与紫外线的结合在水中降解双氯西林的方法--实验和理论方面的问题
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-16 DOI: 10.1016/j.mex.2024.102920

Antibiotics are currently recognized as environmental pollutants. In this work, the methods involved in the degradation of a β-lactam antibiotic (i.e., DXC) by treatments based on inorganic peroxides and UVC (e.g., UVC alone, UV-C/H2O2, UVC/peroxymonosulfate, and UVC/peroxydisulfate) are presented. The methodology of computational calculations to obtain frontier orbitals and Fukui indices for DXC, and elucidate the reactive moieties on the target substance is also shown. Finally, the direct oxidation by peroxides and UV-C/H2O2 action to treat DXC in simulated pharmaceutical wastewater are depicted. The chromatographic and theoretical analyses allowed for determining the degrading performance of inorganic peroxides and UVC-based treatments toward the target pollutant in aqueous samples.

  • Treatments based on inorganic peroxides and UVC as useful methods for degrading the β-lactam antibiotic dicloxacillin.

  • Persulfates and UV-C/H2O2 showed high degrading action on the target pharmaceutical.

  • Methodologies based on theoretical calculations for the identification of reactive moieties on the DXC susceptible to radical attacks are presented.

抗生素是目前公认的环境污染物。本研究介绍了利用无机过氧化物和紫外线(如单独紫外线、紫外线-C/H2O2、紫外线/过氧单硫酸盐和紫外线/过氧二硫酸盐)处理 β-内酰胺类抗生素(即 DXC)的降解方法。此外,还介绍了计算方法,以获得 DXC 的前沿轨道和福井指数,并阐明目标物质上的活性分子。最后,介绍了用过氧化物直接氧化和紫外线-C/H2O2 作用来处理模拟制药废水中的 DXC。通过色谱和理论分析,确定了无机过氧化物和基于紫外线的处理方法对水样中目标污染物的降解性能。
{"title":"Methods for degrading dicloxacillin in water using inorganic peroxides and their combination with UVC- experimental and theoretical aspects","authors":"","doi":"10.1016/j.mex.2024.102920","DOIUrl":"10.1016/j.mex.2024.102920","url":null,"abstract":"<div><p>Antibiotics are currently recognized as environmental pollutants. In this work, the methods involved in the degradation of a β-lactam antibiotic (i.e., DXC) by treatments based on inorganic peroxides and UVC (e.g., UVC alone, UV-C/H<sub>2</sub>O<sub>2</sub>, UVC/peroxymonosulfate, and UVC/peroxydisulfate) are presented. The methodology of computational calculations to obtain frontier orbitals and Fukui indices for DXC, and elucidate the reactive moieties on the target substance is also shown. Finally, the direct oxidation by peroxides and UV-C/H<sub>2</sub>O<sub>2</sub> action to treat DXC in simulated pharmaceutical wastewater are depicted. The chromatographic and theoretical analyses allowed for determining the degrading performance of inorganic peroxides and UVC-based treatments toward the target pollutant in aqueous samples.</p><ul><li><span>•</span><span><p>Treatments based on inorganic peroxides and UVC as useful methods for degrading the β-lactam antibiotic dicloxacillin.</p></span></li><li><span>•</span><span><p>Persulfates and UV-C/H2O2 showed high degrading action on the target pharmaceutical.</p></span></li><li><span>•</span><span><p>Methodologies based on theoretical calculations for the identification of reactive moieties on the DXC susceptible to radical attacks are presented.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003716/pdfft?md5=5a53cc02ce8d42e518331388cfafa128&pid=1-s2.0-S2215016124003716-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142012331","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
Modeling the spatially varying effects of biophysical factors on land surface temperature 模拟生物物理因素对地表温度的空间变化影响
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-16 DOI: 10.1016/j.mex.2024.102915

A growing number of studies have investigated how land surface temperature (LST) is influenced by a variety of driving factors; however, little effort has been made to identify the dominant ones. The suggested method used the Upper Awash Basin (UAB), Ethiopia, as an example to explore the spatial heterogeneity and factors affecting LST, which is critical for selecting effective mitigation strategies to manage the thermal environment. The study employed two models: ordinary least squares (OLS) and geographically weighted regression (GWR). The OLS model was first used to capture the overall relationship between LST and some biophysical factors. The GWR was then utilized to investigate the spatial non-stationary relationships between LST and its influencing biophysical factors. Although the method was tested in UAB, Ethiopia, it can be applied in similar agroecosystems, to identify the dominant factors that influence LST and develop site-specific LST mitigation strategies.

  • The OLS and GWR models investigated the spatial heterogeneities of the influencing factors and LST.

  • Biophysical parameters such as enhanced vegetation index (EVI), modified normalized difference water index (MNDWI), normalized difference built-up index (NDBI), normalized difference bareness index (NDBaI), albedo and elevation were used as potential driving environmental factors of LST

  • The models performance was computed using the adjusted coefficient of determination (adj. R2), Akaike Information Criterion (AICc), and residual sum of squares (RSS).

越来越多的研究调查了陆地表面温度(LST)如何受到各种驱动因素的影响;但是,很少有人努力找出主导因素。所建议的方法以埃塞俄比亚上阿瓦士盆地(UAB)为例,探讨影响 LST 的空间异质性和因素,这对于选择有效的缓解策略来管理热环境至关重要。研究采用了两种模型:普通最小二乘法(OLS)和地理加权回归(GWR)。OLS 模型首先用于捕捉 LST 与一些生物物理因素之间的总体关系。然后利用地理加权回归研究 LST 与其影响的生物物理因子之间的空间非平稳关系。虽然该方法在埃塞俄比亚 UAB 进行了测试,但它可用于类似的农业生态系统,以确定影响 LST 的主要因素,并制定针对具体地点的 LST 缓解战略。-将增强植被指数(EVI)、修正归一化差异水指数(MNDWI)、归一化差异堆积指数(NDBI)、归一化差异裸露指数(NDBaI)、反照率和海拔高度等生物物理参数作为 LST 的潜在驱动环境因素。
{"title":"Modeling the spatially varying effects of biophysical factors on land surface temperature","authors":"","doi":"10.1016/j.mex.2024.102915","DOIUrl":"10.1016/j.mex.2024.102915","url":null,"abstract":"<div><p>A growing number of studies have investigated how land surface temperature (LST) is influenced by a variety of driving factors; however, little effort has been made to identify the dominant ones. The suggested method used the Upper Awash Basin (UAB), Ethiopia, as an example to explore the spatial heterogeneity and factors affecting LST, which is critical for selecting effective mitigation strategies to manage the thermal environment. The study employed two models: ordinary least squares (OLS) and geographically weighted regression (GWR). The OLS model was first used to capture the overall relationship between LST and some biophysical factors. The GWR was then utilized to investigate the spatial non-stationary relationships between LST and its influencing biophysical factors. Although the method was tested in UAB, Ethiopia, it can be applied in similar agroecosystems, to identify the dominant factors that influence LST and develop site-specific LST mitigation strategies.</p><ul><li><span>•</span><span><p>The OLS and GWR models investigated the spatial heterogeneities of the influencing factors and LST.</p></span></li><li><span>•</span><span><p>Biophysical parameters such as enhanced vegetation index (EVI), modified normalized difference water index (MNDWI), normalized difference built-up index (NDBI), normalized difference bareness index (NDBaI), albedo and elevation were used as potential driving environmental factors of LST</p></span></li><li><span>•</span><span><p>The models performance was computed using the adjusted coefficient of determination (adj. R<sup>2</sup>), Akaike Information Criterion (AICc), and residual sum of squares (RSS).</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003662/pdfft?md5=bfdbbd52cb65a0eaddb443543fee41f6&pid=1-s2.0-S2215016124003662-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142012332","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
Optimal interpolation approach for groundwater depth estimation 地下水深度估算的最优插值法
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-15 DOI: 10.1016/j.mex.2024.102916

In arid and semi-arid regions where surface water resources are scarce, groundwater is crucial. Accurate mapping of groundwater depth is vital for sustainable management practices. This study evaluated the performance of three spatial interpolation techniques – inverse distance weighting (IDW), ordinary kriging (OK), and radial basis functions (RBF) – in predicting groundwater depth distribution across Dire Dawa City, Ethiopia. The results demonstrated the superiority of the RBF method, exhibiting the lowest RMSE (3.21 m), MAE (0.16 m), and the highest R2 (0.99) compared to IDW and OK. The IDW method emerged as the next best performer (RMSE = 4.68 m, MAE = 0.16 m, R2= 0.97), followed by OK (RMSE = 5.32 m, MAE = 0.42 m, R2= 0.95). The RBF's superior accuracy aligns with findings from other semi-arid regions, underscoring its suitability for data-scarce areas like Dire Dawa. This comparative evaluation provides valuable insights for selecting the optimal interpolation method for groundwater depth mapping, supporting informed decision-making in local water resource management.

The methodological approach comprised:

  • Implementation of three interpolation techniques, namely, inverse distance weighting (IDW), ordinary kriging (OK), and radial basis functions (RBF), utilizing 56 groundwater depth measurements from locations dispersed throughout the study area.

  • Cross-validation through randomly withholding 20 % of the data for validation purposes.

  • Comparison of the techniques based on statistical measures of accuracy, including root mean square error (RMSE), mean absolute error (MAE), and the coefficient of determination (R2).

在地表水资源匮乏的干旱和半干旱地区,地下水至关重要。准确绘制地下水深度图对于可持续管理至关重要。本研究评估了三种空间插值技术--反距离加权法(IDW)、普通克里金法(OK)和径向基函数法(RBF)--在预测埃塞俄比亚迪雷达瓦市地下水深度分布方面的性能。结果表明,与 IDW 和 OK 相比,RBF 方法的 RMSE(3.21 米)、MAE(0.16 米)最低,R2(0.99)最高,具有优势。其次是 IDW 方法(RMSE = 4.68 m,MAE = 0.16 m,R2= 0.97),然后是 OK 方法(RMSE = 5.32 m,MAE = 0.42 m,R2= 0.95)。RBF 的超高精度与其他半干旱地区的研究结果一致,突出表明它适用于像德雷达瓦这样的数据稀缺地区。这种比较评估为地下水深度绘图选择最佳插值方法提供了有价值的见解,为当地水资源管理的知情决策提供了支持。方法包括:-利用分散在整个研究区域的 56 个地点的地下水深度测量数据,实施三种插值技术,即反距离加权(IDW)、普通克里金(OK)和径向基函数(RBF)。-通过随机扣留 20% 的数据进行交叉验证。
{"title":"Optimal interpolation approach for groundwater depth estimation","authors":"","doi":"10.1016/j.mex.2024.102916","DOIUrl":"10.1016/j.mex.2024.102916","url":null,"abstract":"<div><p>In arid and semi-arid regions where surface water resources are scarce, groundwater is crucial. Accurate mapping of groundwater depth is vital for sustainable management practices. This study evaluated the performance of three spatial interpolation techniques – inverse distance weighting (IDW), ordinary kriging (OK), and radial basis functions (RBF) – in predicting groundwater depth distribution across Dire Dawa City, Ethiopia. The results demonstrated the superiority of the RBF method, exhibiting the lowest RMSE (3.21 m), MAE (0.16 m), and the highest R<sup>2</sup> (0.99) compared to IDW and OK. The IDW method emerged as the next best performer (RMSE = 4.68 m, MAE = 0.16 m, R<sup>2</sup>= 0.97), followed by OK (RMSE = 5.32 m, MAE = 0.42 m, R<sup>2</sup>= 0.95). The RBF's superior accuracy aligns with findings from other semi-arid regions, underscoring its suitability for data-scarce areas like Dire Dawa. This comparative evaluation provides valuable insights for selecting the optimal interpolation method for groundwater depth mapping, supporting informed decision-making in local water resource management.</p><p>The methodological approach comprised:</p><ul><li><span>•</span><span><p>Implementation of three interpolation techniques, namely, inverse distance weighting (IDW), ordinary kriging (OK), and radial basis functions (RBF), utilizing 56 groundwater depth measurements from locations dispersed throughout the study area.</p></span></li><li><span>•</span><span><p>Cross-validation through randomly withholding 20 % of the data for validation purposes.</p></span></li><li><span>•</span><span><p>Comparison of the techniques based on statistical measures of accuracy, including root mean square error (RMSE), mean absolute error (MAE), and the coefficient of determination (R<sup>2</sup>).</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003674/pdfft?md5=59bf641cfc567c651f1a94e4e4fb8134&pid=1-s2.0-S2215016124003674-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040682","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
An improvement in the method of correcting indirect radial strain measurements during triaxial strength tests in rocks 岩石三轴强度试验中间接径向应变测量校正方法的改进
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-15 DOI: 10.1016/j.mex.2024.102918

The present article provides an improvement in the method to correct indirect strain measurements in triaxial compressive strength tests through axial displacement and hydraulic fluid volume change measurements. The improvement focused on reducing the parameters of the formula proposed for indirect volumetric strain in the original method, thereby facilitating the development of a simpler formula in which the radial strain depends on only two parameters: the initial volume of the rock specimen and the volume changes of the hydraulic fluid for each instant. The comparison between the improvement proposed, and original method resulted in a mean absolute difference of 0.003.

  • This improvement does not depend on the axial strain, unlike the original method, which requires correcting the indirect axial strain measurements before correcting the indirect radial strain measurements.

  • This improvement can be useful for research on the stress-strain behavior of intact rock under laboratory conditions, such as in the study of the post-peak state.

本文对通过轴向位移和液压流体体积变化测量校正三轴抗压强度试验中间接应变测量的方法进行了改进。改进的重点是减少原始方法中提出的间接体积应变公式的参数,从而便于开发一种更简单的公式,其中径向应变仅取决于两个参数:岩石试样的初始体积和液压油在每个瞬间的体积变化。提出的改进方法与原始方法的平均绝对差值为 0.003。这种改进不依赖于轴向应变,与原始方法不同,原始方法需要先修正间接轴向应变测量值,然后再修正间接径向应变测量值。
{"title":"An improvement in the method of correcting indirect radial strain measurements during triaxial strength tests in rocks","authors":"","doi":"10.1016/j.mex.2024.102918","DOIUrl":"10.1016/j.mex.2024.102918","url":null,"abstract":"<div><p>The present article provides an improvement in the method to correct indirect strain measurements in triaxial compressive strength tests through axial displacement and hydraulic fluid volume change measurements. The improvement focused on reducing the parameters of the formula proposed for indirect volumetric strain in the original method, thereby facilitating the development of a simpler formula in which the radial strain depends on only two parameters: the initial volume of the rock specimen and the volume changes of the hydraulic fluid for each instant. The comparison between the improvement proposed, and original method resulted in a mean absolute difference of 0.003.</p><ul><li><span>•</span><span><p>This improvement does not depend on the axial strain, unlike the original method, which requires correcting the indirect axial strain measurements before correcting the indirect radial strain measurements.</p></span></li><li><span>•</span><span><p>This improvement can be useful for research on the stress-strain behavior of intact rock under laboratory conditions, such as in the study of the post-peak state.</p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003698/pdfft?md5=2f700416fd22c7d5b540f6b6ffbfe4ff&pid=1-s2.0-S2215016124003698-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142012329","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
Optimization of the determination of volatile organic compounds in plant tissue and soil samples: Untargeted metabolomics of main active compounds 优化植物组织和土壤样品中挥发性有机化合物的测定:主要活性化合物的非靶向代谢组学研究
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-14 DOI: 10.1016/j.mex.2024.102914

This review critically assesses the determination of low molecular weight volatiles by different methods, providing context for the development of suitable techniques to determine volatile content in plant tissue and soil samples as well as the associated analytical challenges. Although sensitive analytical methods have been reported in recent decades, studies on their application in modern investigative techniques are lacking. Herein, the latest sampling methods in volatile biochemistry, current advancements in the understanding of these analytes, and the significance of these findings for other types of volatiles are summarized. Gas chromatography, high-performance liquid chromatography, ion chromatography, thin-film microextraction, and real-time monitoring techniques are discussed and critically determined. This review concerns the methods most suitable for future research in this area.

本综述严格评估了用不同方法测定低分子量挥发物的情况,为开发合适的技术来测定植物组织和土壤样本中的挥发物含量以及相关的分析挑战提供了背景资料。尽管近几十年来已有敏感分析方法的报道,但缺乏对其在现代调查技术中应用的研究。本文总结了挥发性生物化学的最新取样方法、目前对这些分析物的认识进展以及这些发现对其他类型挥发物的意义。文中讨论了气相色谱法、高效液相色谱法、离子色谱法、薄膜微萃取法和实时监测技术,并对其进行了严格的评判。本综述涉及最适合该领域未来研究的方法。
{"title":"Optimization of the determination of volatile organic compounds in plant tissue and soil samples: Untargeted metabolomics of main active compounds","authors":"","doi":"10.1016/j.mex.2024.102914","DOIUrl":"10.1016/j.mex.2024.102914","url":null,"abstract":"<div><p>This review critically assesses the determination of low molecular weight volatiles by different methods, providing context for the development of suitable techniques to determine volatile content in plant tissue and soil samples as well as the associated analytical challenges. Although sensitive analytical methods have been reported in recent decades, studies on their application in modern investigative techniques are lacking. Herein, the latest sampling methods in volatile biochemistry, current advancements in the understanding of these analytes, and the significance of these findings for other types of volatiles are summarized. Gas chromatography, high-performance liquid chromatography, ion chromatography, thin-film microextraction, and real-time monitoring techniques are discussed and critically determined. This review concerns the methods most suitable for future research in this area.</p></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2215016124003650/pdfft?md5=1413f92a0099cb08df182dfad7c33de2&pid=1-s2.0-S2215016124003650-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040030","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 Mellin transform based video steganography with improved resistance to deep learning steganalysis for next generation networks 基于梅林变换的视频隐写术,提高了下一代网络对深度学习隐写术的抵抗力
IF 1.6 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2024-08-14 DOI: 10.1016/j.mex.2024.102887

In the era of 5 G network advancements, the potential for extremely robust, less-latency, and huge-capacity communication opens up new perspective for multimedia. Steganography enables embedding of sensitive data within multimedia files, making it unreadable to unauthorized third parties. Notably, when using videos as cover, the capacity for data embedding is substantially increased. Recent developments in steganography have largely revolved around modified versions of transform domain techniques. Due to this repetitiveness, it becomes easier for steganalytic tools in detecting concealed data. Addressing this issue, our paper introduces an innovative data embedding approach MARVIS based on the Mellin transform. The superiority of the proposed approach is exhibited using the metrics, MSE, PSNR, and SSIM. MARVIS has achieved PSNR of 50–60 dB and SSIM of 0.9998 for embedding 4 bits of secret data, outperforming other methods that achieve 40 dB for 1 bit. By quadrupling stego capacity, we can embed more secret data per pixel without compromising the integrity of the cover object.

  • MARVIS utilizes phase modulation for data embedding, offering advantages beyond traditional frequency domain techniques which use frequency domain for data embedding.

  • The effectiveness of the proposed data embedding approach is validated through Y-Net, a deep learning-based steganalysis tool.

在 5 G 网络进步的时代,极强、低延迟和大容量通信的潜力为多媒体开辟了新的前景。隐写术可以将敏感数据嵌入多媒体文件,使未经授权的第三方无法读取。值得注意的是,当使用视频作为封面时,数据嵌入的容量会大大增加。隐写术的最新发展主要围绕变换域技术的改进版本。由于这种重复性,隐写分析工具更容易检测到被隐藏的数据。针对这一问题,我们的论文介绍了一种基于梅林变换的创新数据嵌入方法 MARVIS。所提方法的优越性通过 MSE、PSNR 和 SSIM 等指标得以体现。在嵌入 4 比特秘密数据时,MARVIS 的 PSNR 达到 50-60 dB,SSIM 达到 0.9998,优于其他 1 比特 40 dB 的方法。MARVIS 利用相位调制进行数据嵌入,其优势超过了使用频域进行数据嵌入的传统频域技术。
{"title":"A Mellin transform based video steganography with improved resistance to deep learning steganalysis for next generation networks","authors":"","doi":"10.1016/j.mex.2024.102887","DOIUrl":"10.1016/j.mex.2024.102887","url":null,"abstract":"<div><p>In the era of 5 G network advancements, the potential for extremely robust, less-latency, and huge-capacity communication opens up new perspective for multimedia. Steganography enables embedding of sensitive data within multimedia files, making it unreadable to unauthorized third parties. Notably, when using videos as cover, the capacity for data embedding is substantially increased. Recent developments in steganography have largely revolved around modified versions of transform domain techniques. Due to this repetitiveness, it becomes easier for steganalytic tools in detecting concealed data. Addressing this issue, our paper introduces an innovative data embedding approach MARVIS based on the Mellin transform. The superiority of the proposed approach is exhibited using the metrics, MSE, PSNR, and SSIM. MARVIS has achieved PSNR of 50–60 dB and SSIM of 0.9998 for embedding 4 bits of secret data, outperforming other methods that achieve 40 dB for 1 bit. By quadrupling stego capacity, we can embed more secret data per pixel without compromising the integrity of the cover object.</p><ul><li><span>•</span><span><p>MARVIS utilizes phase modulation for data embedding, offering advantages beyond traditional frequency domain techniques which use frequency domain for data embedding.</p></span></li><li><span>•</span><span><p>The effectiveness of the proposed data embedding approach is validated through Y-Net, a deep learning-based steganalysis tool<em>.</em></p></span></li></ul></div>","PeriodicalId":18446,"journal":{"name":"MethodsX","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S221501612400339X/pdfft?md5=6634e5561f0e2e51c29e4d7c4a13954e&pid=1-s2.0-S221501612400339X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142083489","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
MethodsX
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