Pub Date : 2024-07-03DOI: 10.1016/j.morpho.2024.100793
J C Feddema, L Z F Chiu
Advances in computer hardware and software permit the reconstruction of physical objects digitally from digital camera images. Given the varying shapes and sizes of human bones, a comprehensive assessment is required to establish the accuracy of digital bone reconstructions from three-dimensional (3D) photogrammetry. Five human bones (femur, radius, scapula, vertebra, patella) were marked with pencil, to establish between 9 and 29 landmarks. The distances between landmarks were measured from the physical bones and digitized from 3D reconstructions. Images used for reconstructions were taken on two separate days, allowing for repeatability to be established. In comparison to physical measurements, the mean (±standard deviation) absolute differences were between 0.2±0.1mm and 0.4±0.2mm. The mean (±standard deviation) absolute differences between reconstructions were between 0.3±<0.1mm and 0.4±0.4mm. The 3D photogrammetry procedures described are accurate and repeatable, permitting quantitative analyses to be conducted from digital reconstructions. Moreover, 3D photogrammetry may be used to capture and preserve anatomical materials for anatomy education.
{"title":"Accuracy and repeatability of 3D Photogrammetry to digitally reconstruct bones.","authors":"J C Feddema, L Z F Chiu","doi":"10.1016/j.morpho.2024.100793","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100793","url":null,"abstract":"<p><p>Advances in computer hardware and software permit the reconstruction of physical objects digitally from digital camera images. Given the varying shapes and sizes of human bones, a comprehensive assessment is required to establish the accuracy of digital bone reconstructions from three-dimensional (3D) photogrammetry. Five human bones (femur, radius, scapula, vertebra, patella) were marked with pencil, to establish between 9 and 29 landmarks. The distances between landmarks were measured from the physical bones and digitized from 3D reconstructions. Images used for reconstructions were taken on two separate days, allowing for repeatability to be established. In comparison to physical measurements, the mean (±standard deviation) absolute differences were between 0.2±0.1mm and 0.4±0.2mm. The mean (±standard deviation) absolute differences between reconstructions were between 0.3±<0.1mm and 0.4±0.4mm. The 3D photogrammetry procedures described are accurate and repeatable, permitting quantitative analyses to be conducted from digital reconstructions. Moreover, 3D photogrammetry may be used to capture and preserve anatomical materials for anatomy education.</p>","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.ijlp.2024.102005
Daniel McFadden, Gavin Davidson, Michelle Butler
Background: Social Support has multiple benefits for health and mental wellbeing. Its existence, and the extent to which it can be beneficial, is dependent upon the context in which it is provided, and the recipients' view of it. Social support has long been established as a 'buffer' to the negative impact of stressful life experiences. Trauma can negatively impact upon social support, reducing the extent of social networks and ability of some trauma experienced individuals to sustain extensive social support networks. However, some trauma experiences can also strengthen social relationships. Imprisoned men are disproportionately likely to have experienced a traumatic event when compared with the general population. Past research has found that traumatic events can lead to a decrease in social support among imprisoned men but more research is needed to understand the variations in perceived social support experienced by imprisoned men and to determine how different types of trauma may be related to perceived social support.
Method: A cross-sectional survey of 384 adult men detained in the Northern Ireland Prison Service was conducted between November 2022 and January 2023. The survey collected data on the men's demographics, mental health, substance use, and criminal history. Respondents were also asked to complete a Trauma History Questionnaire (THQ) and the Multi-dimensional Scale of Perceived Social Support (MSPSS). Regression analysis was then used to investigate the possible associations between individual characteristics, different types of trauma experiences and perceived social support.
Results: Most types of trauma experiences were not associated with lower levels of perceived social support. Only those who had experienced crime related trauma were more likely to report lower levels of social support. Older imprisoned men and those using substances were more likely to report lower levels of perceived social support, while those who had served a sentence of less than one year reported higher levels of perceived social support.
Discussion: Crime related trauma experiences were found to be associated with lower levels of perceived social support. There were no significant findings around perceived social support and any of the other trauma types i.e. physical, sexual and general disaster experiences. Trauma informed policy responses should be cognisant of this, as those with experiences of crime related victimisation are less likely to have the social support needed to buffer against future trauma experiences. The findings demonstrate that some individuals experience lower levels of perceived social support and several factors are associated with this including age, time served and substance use history. This will potentially impact upon them during release and affect their reintegration into society. Specific policies aimed at these groups should be co
{"title":"Social support and trauma experiences of imprisoned men in Northern Ireland.","authors":"Daniel McFadden, Gavin Davidson, Michelle Butler","doi":"10.1016/j.ijlp.2024.102005","DOIUrl":"https://doi.org/10.1016/j.ijlp.2024.102005","url":null,"abstract":"<p><strong>Background: </strong>Social Support has multiple benefits for health and mental wellbeing. Its existence, and the extent to which it can be beneficial, is dependent upon the context in which it is provided, and the recipients' view of it. Social support has long been established as a 'buffer' to the negative impact of stressful life experiences. Trauma can negatively impact upon social support, reducing the extent of social networks and ability of some trauma experienced individuals to sustain extensive social support networks. However, some trauma experiences can also strengthen social relationships. Imprisoned men are disproportionately likely to have experienced a traumatic event when compared with the general population. Past research has found that traumatic events can lead to a decrease in social support among imprisoned men but more research is needed to understand the variations in perceived social support experienced by imprisoned men and to determine how different types of trauma may be related to perceived social support.</p><p><strong>Method: </strong>A cross-sectional survey of 384 adult men detained in the Northern Ireland Prison Service was conducted between November 2022 and January 2023. The survey collected data on the men's demographics, mental health, substance use, and criminal history. Respondents were also asked to complete a Trauma History Questionnaire (THQ) and the Multi-dimensional Scale of Perceived Social Support (MSPSS). Regression analysis was then used to investigate the possible associations between individual characteristics, different types of trauma experiences and perceived social support.</p><p><strong>Results: </strong>Most types of trauma experiences were not associated with lower levels of perceived social support. Only those who had experienced crime related trauma were more likely to report lower levels of social support. Older imprisoned men and those using substances were more likely to report lower levels of perceived social support, while those who had served a sentence of less than one year reported higher levels of perceived social support.</p><p><strong>Discussion: </strong>Crime related trauma experiences were found to be associated with lower levels of perceived social support. There were no significant findings around perceived social support and any of the other trauma types i.e. physical, sexual and general disaster experiences. Trauma informed policy responses should be cognisant of this, as those with experiences of crime related victimisation are less likely to have the social support needed to buffer against future trauma experiences. The findings demonstrate that some individuals experience lower levels of perceived social support and several factors are associated with this including age, time served and substance use history. This will potentially impact upon them during release and affect their reintegration into society. Specific policies aimed at these groups should be co","PeriodicalId":47930,"journal":{"name":"International Journal of Law and Psychiatry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Some case reports have found that corticosteroid treatments shrunk thymoma lesions remarkably after the failure of chemotherapy or surgery. However, few studies have comprehensibly evaluated the antitumor effects of corticosteroids in patients with invasive thymomas.
Methods: We reviewed the medical records of 13 consecutively enrolled patients with locally advanced or metastatic thymomas treated via corticosteroid monotherapies from January 2010 to March 2021 in our institute. A Cox's proportional hazard model and the Kaplan-Meier method were used to identify factors associated with survival.
Results: The median follow-up time was 26 months (range, 13-115 months). The median initial dose of corticosteroid was 0.90 mg/kg/day prednisolone equivalent (range, 0.4-1.1 mg/kg/day). Of the 13 cases, 7 (53.8%, 95% CI: 0.25-0.81) exhibited a partial response and 5 (38.5%, 95% CI: 0.14-0.68) stable disease. The median progression-free survival was 5.7 months [95% confidence interval (CI): 1.5-9.6 months]. The median overall survival was 25.3 months (95% CI: 7.1-not attained). The median duration of corticosteroid use was 3 months (range, 1-64 months). Patients with WHO subtype B thymomas exhibited a better overall response rate to corticosteroids than did patients with other disease subtypes (75%, 95% CI: 0.19-0.99). Adverse events of Grade 3 or more were not observed.
Conclusions: Corticosteroids are clinically valuable for patients with thymomas.
{"title":"The remarkable antitumor efficacy of corticosteroid treatment in patients with refractory thymomas.","authors":"Tomohiro Tanaka, Yasushi Goto, Ken Masuda, Yuki Shinno, Yuji Matsumoto, Yusuke Okuma, Tatsuya Yoshida, Hidehito Horinouchi, Noboru Yamamoto, Yuichiro Ohe","doi":"10.1016/j.resinv.2024.06.008","DOIUrl":"https://doi.org/10.1016/j.resinv.2024.06.008","url":null,"abstract":"<p><strong>Background: </strong>Some case reports have found that corticosteroid treatments shrunk thymoma lesions remarkably after the failure of chemotherapy or surgery. However, few studies have comprehensibly evaluated the antitumor effects of corticosteroids in patients with invasive thymomas.</p><p><strong>Methods: </strong>We reviewed the medical records of 13 consecutively enrolled patients with locally advanced or metastatic thymomas treated via corticosteroid monotherapies from January 2010 to March 2021 in our institute. A Cox's proportional hazard model and the Kaplan-Meier method were used to identify factors associated with survival.</p><p><strong>Results: </strong>The median follow-up time was 26 months (range, 13-115 months). The median initial dose of corticosteroid was 0.90 mg/kg/day prednisolone equivalent (range, 0.4-1.1 mg/kg/day). Of the 13 cases, 7 (53.8%, 95% CI: 0.25-0.81) exhibited a partial response and 5 (38.5%, 95% CI: 0.14-0.68) stable disease. The median progression-free survival was 5.7 months [95% confidence interval (CI): 1.5-9.6 months]. The median overall survival was 25.3 months (95% CI: 7.1-not attained). The median duration of corticosteroid use was 3 months (range, 1-64 months). Patients with WHO subtype B thymomas exhibited a better overall response rate to corticosteroids than did patients with other disease subtypes (75%, 95% CI: 0.19-0.99). Adverse events of Grade 3 or more were not observed.</p><p><strong>Conclusions: </strong>Corticosteroids are clinically valuable for patients with thymomas.</p>","PeriodicalId":20934,"journal":{"name":"Respiratory investigation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.jenvman.2024.121683
Yuan Hu, Ching Yoong Loh, Ming Xie, Gang Chen, Manhong Huang, Jinli Qiao
Ammonia recovery from wastewater has positive environmental benefits, avoiding eutrophication and reducing production energy consumption, which is one of the most effective ways to manage nutrients in wastewater. Specifically, ammonia recovery by membrane distillation has been gradually adopted due to its excellent separation properties for volatile substances. However, the global optimization of direct contact membrane distillation (DCMD) operating parameters to maximize ammonia recovery efficiency (ARE) has not been attempted. In this work, three key operating factors affecting ammonia recovery, i.e., feed ammonia concentration, feed pH, and DCMD running time, were identified from eight factors, by a two-level Plackett-Burman Design (PBD). Subsequently, Box-Behnken design (BBD) under the response surface methodology (RSM) was used to model and optimize the significant operating parameters affecting the recovery of ammonia though DCMD identified by PBD and statistically verified by analysis of variance (ANOVA). Results showed that the model had a high coefficient of determination value (R2 = 0.99), and the interaction between NH4Cl concentration and feed pH had a significant effect on ARE. The optimal operating parameters of DCMD as follows: NH4Cl concentration of 0.46 g/L, feed pH of 10.6, DCMD running time of 11.3 h, and the maximum value of ARE was 98.46%. Under the optimized conditions, ARE reached up to 98.72%, which matched the predicted value and verified the validity and reliability of the model for the optimization of ammonia recovery by DCMD process.
{"title":"Ammonia recovery via direct contact membrane distillation: Modeling and performance optimization.","authors":"Yuan Hu, Ching Yoong Loh, Ming Xie, Gang Chen, Manhong Huang, Jinli Qiao","doi":"10.1016/j.jenvman.2024.121683","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.121683","url":null,"abstract":"<p><p>Ammonia recovery from wastewater has positive environmental benefits, avoiding eutrophication and reducing production energy consumption, which is one of the most effective ways to manage nutrients in wastewater. Specifically, ammonia recovery by membrane distillation has been gradually adopted due to its excellent separation properties for volatile substances. However, the global optimization of direct contact membrane distillation (DCMD) operating parameters to maximize ammonia recovery efficiency (ARE) has not been attempted. In this work, three key operating factors affecting ammonia recovery, i.e., feed ammonia concentration, feed pH, and DCMD running time, were identified from eight factors, by a two-level Plackett-Burman Design (PBD). Subsequently, Box-Behnken design (BBD) under the response surface methodology (RSM) was used to model and optimize the significant operating parameters affecting the recovery of ammonia though DCMD identified by PBD and statistically verified by analysis of variance (ANOVA). Results showed that the model had a high coefficient of determination value (R<sup>2</sup> = 0.99), and the interaction between NH<sub>4</sub>Cl concentration and feed pH had a significant effect on ARE. The optimal operating parameters of DCMD as follows: NH<sub>4</sub>Cl concentration of 0.46 g/L, feed pH of 10.6, DCMD running time of 11.3 h, and the maximum value of ARE was 98.46%. Under the optimized conditions, ARE reached up to 98.72%, which matched the predicted value and verified the validity and reliability of the model for the optimization of ammonia recovery by DCMD process.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141533117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.jenvman.2024.121600
Bo Liu, Bo Yue, Li-Li He, Bang-Bang Meng, Ya-Xin Wang, Tao Wang, Hong Gao
Electrolytic manganese residue (EMR) is known for high concentrations of Mn2+, NH4+, and heavy metals. Failure to undergo benign treatment and landfill disposal would undeniably lead to negative impacts on the quality of the surrounding ecological environment. This study sought to mitigate the latent environmental risks associated with EMR using a cooperative solidification/stabilization (S/S) method involving coal fly ash (CFA). Leveraging leaching toxicity tests, the leaching behavior of pollutants in electrolytic manganese residue-based geopolymer materials (EMRGM) was determined. At the same time, mechanistic insights into S/S processes were explored utilizing characterization techniques such as XRF, XRD, FT-IR, SEM-EDS, and XPS. Those results confirmed significant reductions in the leaching toxicities of Mn2+ and NH4+ to 4.64 μg/L and 0.99 mg/L, respectively, with all other heavy metal ions falling within the permissible limits set by relevant standards. Further analysis shows that most of NH4+ volatilizes into the air as NH3, and a small part is fixed in the EMRGM in the form of struvite; in addition to being oxidized to MnOOH and MnO2, Mn2+ will also be adsorbed and wrapped by silicon-aluminum gel together with other heavy metal elements in the form of ions or precipitation. This research undeniably provides a solid theoretical foundation for the benign treatment and resourceful utilization of EMR and CFA, two prominent industrial solid wastes.
{"title":"Synergistic solidification and mechanism research of electrolytic manganese residue and coal fly ash based on C-A-S-H gel material.","authors":"Bo Liu, Bo Yue, Li-Li He, Bang-Bang Meng, Ya-Xin Wang, Tao Wang, Hong Gao","doi":"10.1016/j.jenvman.2024.121600","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.121600","url":null,"abstract":"<p><p>Electrolytic manganese residue (EMR) is known for high concentrations of Mn<sup>2+</sup>, NH<sub>4</sub><sup>+</sup>, and heavy metals. Failure to undergo benign treatment and landfill disposal would undeniably lead to negative impacts on the quality of the surrounding ecological environment. This study sought to mitigate the latent environmental risks associated with EMR using a cooperative solidification/stabilization (S/S) method involving coal fly ash (CFA). Leveraging leaching toxicity tests, the leaching behavior of pollutants in electrolytic manganese residue-based geopolymer materials (EMRGM) was determined. At the same time, mechanistic insights into S/S processes were explored utilizing characterization techniques such as XRF, XRD, FT-IR, SEM-EDS, and XPS. Those results confirmed significant reductions in the leaching toxicities of Mn<sup>2+</sup> and NH<sub>4</sub><sup>+</sup> to 4.64 μg/L and 0.99 mg/L, respectively, with all other heavy metal ions falling within the permissible limits set by relevant standards. Further analysis shows that most of NH<sub>4</sub><sup>+</sup> volatilizes into the air as NH<sub>3</sub>, and a small part is fixed in the EMRGM in the form of struvite; in addition to being oxidized to MnOOH and MnO<sub>2</sub>, Mn<sup>2+</sup> will also be adsorbed and wrapped by silicon-aluminum gel together with other heavy metal elements in the form of ions or precipitation. This research undeniably provides a solid theoretical foundation for the benign treatment and resourceful utilization of EMR and CFA, two prominent industrial solid wastes.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141533181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.puhe.2024.06.002
Yingwei Yang
Objectives: This study assessed the direct and indirect effects (via depressive symptoms) of lifetime use of a broad range of substances on suicide risk among US adolescents.
Study design: This was a cross-sectional study.
Methods: Data from the 2021 Youth Risk Behavior Survey were used (N = 12,303, 48.7% female). Associations between five types of substance use (cigarette, e-cigarette, alcohol, marijuana, and prescription pain medicine) and three dimensions of suicide risk (suicidal ideation, suicide plan, and suicide attempt) were measured by multivariate logistic regression models. The role of depressive symptoms was further examined by structural equation modeling.
Results: Almost three in five (57.5%) adolescents had used one or more substances in their lifetime (18.1% one type, 12.2% two types, 13.1% three types, 10.2% four types, and 3.8% five types). Adolescents using five substances were up to 16 times more likely to experience suicidal ideation and behaviors. Depressive symptoms significantly linked the pathway from substance use to suicide risk, resulting in much stronger indirect effects than the direct effects. Collectively, the five substance use behaviors and depressive symptoms explained about 60.4% of variance in suicidal ideation, 53.6% of variance in suicide plan, and 55.0% of variance in suicide attempt.
Conclusions: Lifetime use of multiple substances is significantly correlated with suicidal ideation and behaviors among adolescents via the pathway of depressive symptoms. Routine screening for a broad range of substance use behaviors is needed to identify adolescents at risk for suicide and accessible mental health services could potentially attenuate the linkage between substance use and suicide risk.
{"title":"Lifetime use of multiple substances and youth suicide risk: assessing the role of depressive symptoms using structural equation modeling.","authors":"Yingwei Yang","doi":"10.1016/j.puhe.2024.06.002","DOIUrl":"https://doi.org/10.1016/j.puhe.2024.06.002","url":null,"abstract":"<p><strong>Objectives: </strong>This study assessed the direct and indirect effects (via depressive symptoms) of lifetime use of a broad range of substances on suicide risk among US adolescents.</p><p><strong>Study design: </strong>This was a cross-sectional study.</p><p><strong>Methods: </strong>Data from the 2021 Youth Risk Behavior Survey were used (N = 12,303, 48.7% female). Associations between five types of substance use (cigarette, e-cigarette, alcohol, marijuana, and prescription pain medicine) and three dimensions of suicide risk (suicidal ideation, suicide plan, and suicide attempt) were measured by multivariate logistic regression models. The role of depressive symptoms was further examined by structural equation modeling.</p><p><strong>Results: </strong>Almost three in five (57.5%) adolescents had used one or more substances in their lifetime (18.1% one type, 12.2% two types, 13.1% three types, 10.2% four types, and 3.8% five types). Adolescents using five substances were up to 16 times more likely to experience suicidal ideation and behaviors. Depressive symptoms significantly linked the pathway from substance use to suicide risk, resulting in much stronger indirect effects than the direct effects. Collectively, the five substance use behaviors and depressive symptoms explained about 60.4% of variance in suicidal ideation, 53.6% of variance in suicide plan, and 55.0% of variance in suicide attempt.</p><p><strong>Conclusions: </strong>Lifetime use of multiple substances is significantly correlated with suicidal ideation and behaviors among adolescents via the pathway of depressive symptoms. Routine screening for a broad range of substance use behaviors is needed to identify adolescents at risk for suicide and accessible mental health services could potentially attenuate the linkage between substance use and suicide risk.</p>","PeriodicalId":49651,"journal":{"name":"Public Health","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.jenvman.2024.121589
Jun Wang, Jun Kong, Chao Gao, Li Jing, Weilun Chen
Subsurface dams have been recognized as one of the most effective measures for preventing saltwater intrusion. However, it may result in large amounts of residual saltwater being trapped upstream of the dam and take years to decades to remove, which may limit the utilization of fresh groundwater in coastal areas. In this study, field-scale numerical simulations were used to investigate the mechanisms of residual saltwater removal from a typical stratified aquifer, where an intermediate low-permeability layer (LPL) exists between two high-permeability layers, under the effect of seasonal sea level fluctuations. The study quantifies and compares the time of residual saltwater removal (Tre) for constant sea level (CSL) and seasonally varying sea level (FSL) scenarios. The modelling results indicate that, in most cases, seasonal fluctuations in sea level facilitate the dilution of residual saltwater and thus accelerate residual saltwater removal compared to a static sea level scenario. However, accounting for seasonal sea level variations may increase the required critical dam height (the minimum dam height required to achieve complete residual saltwater removal). Sensitivity analyses show that Tre decreases with increasing height of subsurface dam (Hd) under CSL or weaker sea level fluctuation scenarios; however, when the magnitude of sea level fluctuation is large, Tre changes non-monotonically with Hd. Tre decreases with increasing distance between subsurface dam and ocean for both CSL and FSL scenarios. We also found that stratification model had a significant effect on Tre. The increase in LPL thickness for both CSL and FSL scenarios leads to a decrease in Tre and critical dam height. Tre generally shows a non-monotonically decreasing trend as LPL elevation increases. These quantitative analyses provide valuable insights into the design of subsurface dams in complex situations.
地下水坝被认为是防止海水入侵的最有效措施之一。然而,这可能会导致大量残余盐水滞留在大坝上游,需要数年至数十年的时间才能清除,这可能会限制沿海地区对地下淡水的利用。在这项研究中,采用了野外尺度的数值模拟来研究在季节性海平面波动的影响下,一个典型的分层含水层(在两个高渗透层之间存在一个中间低渗透层(LPL))的残余盐水排除机制。研究量化并比较了恒定海平面(CSL)和季节性海平面变化(FSL)情况下的残余盐水去除(Tre)时间。建模结果表明,在大多数情况下,海平面的季节性波动会促进残余海水的稀释,从而加快残余海水的清除速度。不过,考虑季节性海平面变化可能会增加所需的临界坝高(实现完全去除残余盐水所需的最低坝高)。敏感性分析表明,在 CSL 或海平面波动较弱的情况下,Tre 随地下坝高度(Hd)的增加而减小;但当海平面波动幅度较大时,Tre 随 Hd 的变化呈非单调变化。在 CSL 和 FSL 情景下,Tre 随地下水坝与海洋距离的增加而减小。我们还发现分层模型对 Tre 有显著影响。在 CSL 和 FSL 方案中,LPL 厚度的增加都会导致 Tre 和临界坝高的降低。随着 LPL 高度的增加,Tre 一般呈非单调递减趋势。这些定量分析为复杂情况下的地下大坝设计提供了宝贵的见解。
{"title":"Effect of seasonal variations in sea level on residual saltwater removal upstream of subsurface dam in coastal layered heterogeneity aquifers.","authors":"Jun Wang, Jun Kong, Chao Gao, Li Jing, Weilun Chen","doi":"10.1016/j.jenvman.2024.121589","DOIUrl":"https://doi.org/10.1016/j.jenvman.2024.121589","url":null,"abstract":"<p><p>Subsurface dams have been recognized as one of the most effective measures for preventing saltwater intrusion. However, it may result in large amounts of residual saltwater being trapped upstream of the dam and take years to decades to remove, which may limit the utilization of fresh groundwater in coastal areas. In this study, field-scale numerical simulations were used to investigate the mechanisms of residual saltwater removal from a typical stratified aquifer, where an intermediate low-permeability layer (LPL) exists between two high-permeability layers, under the effect of seasonal sea level fluctuations. The study quantifies and compares the time of residual saltwater removal (Tre) for constant sea level (CSL) and seasonally varying sea level (FSL) scenarios. The modelling results indicate that, in most cases, seasonal fluctuations in sea level facilitate the dilution of residual saltwater and thus accelerate residual saltwater removal compared to a static sea level scenario. However, accounting for seasonal sea level variations may increase the required critical dam height (the minimum dam height required to achieve complete residual saltwater removal). Sensitivity analyses show that Tre decreases with increasing height of subsurface dam (Hd) under CSL or weaker sea level fluctuation scenarios; however, when the magnitude of sea level fluctuation is large, Tre changes non-monotonically with Hd. Tre decreases with increasing distance between subsurface dam and ocean for both CSL and FSL scenarios. We also found that stratification model had a significant effect on Tre. The increase in LPL thickness for both CSL and FSL scenarios leads to a decrease in Tre and critical dam height. Tre generally shows a non-monotonically decreasing trend as LPL elevation increases. These quantitative analyses provide valuable insights into the design of subsurface dams in complex situations.</p>","PeriodicalId":356,"journal":{"name":"Journal of Environmental Management","volume":null,"pages":null},"PeriodicalIF":8.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141533176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Background: Traditional Chinese medicine, JianpiJiedu decoction (JPJDF), has been utilized in colorectal cancer (CRC) treatment for over forty years. The potential of JPJDF to inhibit CRC through modulation of intestinal microbiota and their metabolites remains uncertain.
Aims: This study aims to further investigate the therapeutic mechanisms of JPJDF in CRC.
Methods: CAC mouse models were developed using azoxymethane (AOM) and dextran sulfate sodium (DSS). Intestinal tissues and contents underwent 16S rRNA gene sequencing and untargeted metabolomics analysis. Serum levels of IL-1β and TNF-α were measured using ELISA. Immunohistochemistry was utilized to assess the expression of Ki67, ZO-1, Occludin, CD68, and CD206. Furthermore, western blotting was performed to evaluate the protein expression of AhR and NF-κB.
Results: JPJDF inhibited colorectal tumourigenesis in AOM/DSS treated mice, while also suppressing tumor cell proliferation and upregulating the expression of tight junction proteins. The results of 16S rRNA gene sequencing analysis revealed that JPJDF altered intestinal microbiota composition by increasing the abundance of beneficial bacteria. Additionally, JPJDF reduced tryptophan metabolites, effectively alleviating inflammation and significantly restoring intestinal barrier function in CAC mice. Molecular biology experiments confirmed that JPJDF suppressed the expression levels of AhR and M2-type tumor-associated macrophages, thereby promoting anti-tumor immunity and exerting inhibitory effects on CAC growth.
Conclusion: JPJDF can regulate the tryptophan metabolism-AhR pathway by modulating the gut microbiota, reducing intestinal inflammation, improving intestinal barrier function, enhancing anti-tumor immunity, and effectively inhibiting CAC growth.
{"title":"Jianpi Jiedu decoction suppresses colorectal cancer growth by inhibiting M2 polarization of TAMs through the tryptophan metabolism-AhR pathway.","authors":"Yonglong Chang, Qinling Ou, Xuhui Zhou, Kechao Nie, Piao Zheng, Jinhui Liu, Linzi Chen, Haixia Yan, Duanyang Guo, Sifang Zhang","doi":"10.1016/j.intimp.2024.112610","DOIUrl":"https://doi.org/10.1016/j.intimp.2024.112610","url":null,"abstract":"<p><strong>Background: </strong>Traditional Chinese medicine, JianpiJiedu decoction (JPJDF), has been utilized in colorectal cancer (CRC) treatment for over forty years. The potential of JPJDF to inhibit CRC through modulation of intestinal microbiota and their metabolites remains uncertain.</p><p><strong>Aims: </strong>This study aims to further investigate the therapeutic mechanisms of JPJDF in CRC.</p><p><strong>Methods: </strong>CAC mouse models were developed using azoxymethane (AOM) and dextran sulfate sodium (DSS). Intestinal tissues and contents underwent 16S rRNA gene sequencing and untargeted metabolomics analysis. Serum levels of IL-1β and TNF-α were measured using ELISA. Immunohistochemistry was utilized to assess the expression of Ki67, ZO-1, Occludin, CD68, and CD206. Furthermore, western blotting was performed to evaluate the protein expression of AhR and NF-κB.</p><p><strong>Results: </strong>JPJDF inhibited colorectal tumourigenesis in AOM/DSS treated mice, while also suppressing tumor cell proliferation and upregulating the expression of tight junction proteins. The results of 16S rRNA gene sequencing analysis revealed that JPJDF altered intestinal microbiota composition by increasing the abundance of beneficial bacteria. Additionally, JPJDF reduced tryptophan metabolites, effectively alleviating inflammation and significantly restoring intestinal barrier function in CAC mice. Molecular biology experiments confirmed that JPJDF suppressed the expression levels of AhR and M2-type tumor-associated macrophages, thereby promoting anti-tumor immunity and exerting inhibitory effects on CAC growth.</p><p><strong>Conclusion: </strong>JPJDF can regulate the tryptophan metabolism-AhR pathway by modulating the gut microbiota, reducing intestinal inflammation, improving intestinal barrier function, enhancing anti-tumor immunity, and effectively inhibiting CAC growth.</p>","PeriodicalId":13859,"journal":{"name":"International immunopharmacology","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141534447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.rec.2024.05.010
{"title":"Correction in the article by de Juan Bagudá et al. \"Repetitive ambulatory levosimendan as a bridge to heart transplantation\", Rev Esp Cardiol. 2024;77:290-301.","authors":"","doi":"10.1016/j.rec.2024.05.010","DOIUrl":"https://doi.org/10.1016/j.rec.2024.05.010","url":null,"abstract":"","PeriodicalId":38430,"journal":{"name":"Revista española de cardiología (English ed.)","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141535594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1016/j.foodchem.2024.140228
Yuxiao Zou, Chunying Mei, Fan Liu, Dongxu Xing, Daorui Pang, Qian Li
The present study found for the first time that phenolic glycosides were an important material basis for mulberry leaves to inhibit lipase. The corresponding IC50 for hyperoside, rutin, astragalin and quercetin were 68, 252, 385 and 815 μg/mL respectively. The inhibitory effect was ranked as monoglycosides > phenolic hydroxyl groups > disaccharides on the benzone ring. Hyperoside bound to lipase in competitive inhibition type with one binding site, while the others bound to lipase in a mixed inhibition type by two similar sites. All four compounds altered the microenvironment and secondary conformation of lipase through static quenching. The docking score, stability, and binding energy were consistent with the compound inhibitory activity. The main binding between compounds and lipase amino acid residues were spontaneously though hydrophobic interactions and hydrogen bonding. The strong hydrogen bonds formed with SER-152 inside the lipase pocket, might be important for the strong inhibitory activity of hyperoside.
{"title":"The lipase inhibitory effect of mulberry leaf phenolic glycosides: The structure-activity relationship and mechanism of action.","authors":"Yuxiao Zou, Chunying Mei, Fan Liu, Dongxu Xing, Daorui Pang, Qian Li","doi":"10.1016/j.foodchem.2024.140228","DOIUrl":"https://doi.org/10.1016/j.foodchem.2024.140228","url":null,"abstract":"<p><p>The present study found for the first time that phenolic glycosides were an important material basis for mulberry leaves to inhibit lipase. The corresponding IC<sub>50</sub> for hyperoside, rutin, astragalin and quercetin were 68, 252, 385 and 815 μg/mL respectively. The inhibitory effect was ranked as monoglycosides > phenolic hydroxyl groups > disaccharides on the benzone ring. Hyperoside bound to lipase in competitive inhibition type with one binding site, while the others bound to lipase in a mixed inhibition type by two similar sites. All four compounds altered the microenvironment and secondary conformation of lipase through static quenching. The docking score, stability, and binding energy were consistent with the compound inhibitory activity. The main binding between compounds and lipase amino acid residues were spontaneously though hydrophobic interactions and hydrogen bonding. The strong hydrogen bonds formed with SER-152 inside the lipase pocket, might be important for the strong inhibitory activity of hyperoside.</p>","PeriodicalId":318,"journal":{"name":"Food Chemistry","volume":null,"pages":null},"PeriodicalIF":8.5,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141533098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}