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Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

The mutual extrusion and collision between the Asia-Europe plate and the India plate led to the strong uplift of the Qinghai-Xizang Plateau, the squeezing of crustal material into the northwest and central and western parts of Yunnan, the intense geological tectonic activity and frequent geological disasters. In order to explore the influence of tectonic stress field characteristics on geological disasters, this paper uses regional structural analysis method, joint analysis method, conjugate shear joint method and water system line graph method to invert the tectonic stress field in the study area, to explore the control effect of various geological structures on geological disasters, and to propose corresponding countermeasures for tectonically induced geological disasters. The results show that the north-east, north-west and near-east-west faults and joint structures are developed around the Xiangyun Basin, and the study area has experienced at least three tectonic stress fields through the intersection of faults and joints and the water system line diagram method, and the maximum principal stress σ1 has successively transformed from the north-east to the north-west to the near-east-west. The fault structure indirectly induces geological disasters by controlling the evolution of the water system. In the area, rivers such as Sancha River and Juli River are mostly developed along the fault zone, and geological disasters such as landslides and collapses are mostly distributed along the slopes on both sides of the rivers. The multi-period activities of the geological structure enhance the density of the fracture network system of the rock and soil mass, resulting in the development of geological disasters. For the prevention and control of geological disasters induced by structure, the effect of engineering management is poor, and this paper puts forward the countermeasures of optimizing the site selection of construction area, relocation avoidance and group survey and group prevention. [ABSTRACT FROM AUTHOR] more...

Before the 21st Century, plenty of laboratory animals were applied to assess the toxicity and potential health risks of compounds. However, with the growing production and application of huge number of new chemicals, these expensive and lengthy in vivo testing showed their limitations. To address this challenge, new approach methodologies have arisen in the 21st Century. Many of these new strategies depend on in silico evaluation or in vitro toxicity pathway in human cells. The results from new strategies were expected to be more closely related to humans and more cost-effective to use. In this paper, we introduce these modern toxicity-testing strategies and their applications in the toxicological studies of per- and polyfluoroalkyl substances (PFAS). Finally, we summarize the deficiencies of new methods, and hope that improvements in these methods will lead to a promising application in the future. [ABSTRACT FROM AUTHOR] more...

Antibiotics have fundamentally transformed veterinary and human medicine, being considered as one of the greatest scientific discoveries of the 20th Century. However, due to the environmental persistence and resistance, they have become one of the newly recognized pollutants of widespread concern. In this paper, 23 publications related to antibiotic water quality criteria published before December 31, 2023 were collected through systematic search in CNKI, Wanfang and Web of Science databases. On this basis, we outlined the research status of antibiotic water quality criteria, compared the results of criteria derivation and the toxicity data used, and proposed directions and considerations for future research. The main research conclusions are as follows: Regarding the research subjects, a total of 34 antibiotics water quality criteria for freshwater organisms have been derived, while over 80.00% of antibiotics still require further related studies. It is suggested to prioritize azithromycin, clarithromycin, and levofloxacin for subsequent research. Regarding the highest frequency of antibiotic water quality criteria was obtained using the species sensitivity distribution method (SSD method) and the assessment factor method (AF method), accounting for 48.78% and 3333%, respectively. The antibiotic water quality criteria obtained from the SSD method and the toxicity percentage ranking method (TPR method) are relatively close; hence, the SSD method is recommended as a priority. Regarding toxicity data, algae, invertebrates, and fish are the three most commonly used aquatic organisms for antibiotic toxicity testing. However, the frequency of using fish toxicity data in the derivation of short-term water quality criteria (SWQC) is less than that for long-term water quality criteria (LWQC). There is a noticeable shortage of invertebrate toxicity data used in LWQC derivation compared to SWQC derivation. Therefore, it is recommended to strengthen research on the acute toxicity of fish and the chronic toxicity of invertebrates in the derivation of water quality criteria. [ABSTRACT FROM AUTHOR] more...

Amphibians undergo a metamorphic developmental process primarily regulated by thyroid hormone (TH), exhibiting dramatic changes in external morphology and internal tissues and organs and even in the expression of TH target genes, providing an ideal model for studying and testing thyroid disruptors. Since 2009, the Organization for Economic Cooperation and Development (OECD) has successively released three testing guidelines for thyroid disruptors based on amphibians, namely the amphibian metamorphosis assay (AMA, TG 231), the larval amphibian growth and development assay (LAGDA, TG 241), and the Xenopus eleutheroembryo thyroid assay (XETA, TG 248). These three assays are currently incorporated into The OECD Conceptual Framework for Testing and Assessment of Endocrine Disrupting Chemicals for screening and testing thyroid disruptors. Compared to AMA and LAGDA, which are based on spontaneous metamorphosis, Chinese researchers have developed the T3-induced Xenopus metamorphosis assay (TiXMA) for screening thyroid disruptors. To promote the understanding and application of these assays, this paper reviews the principles, endpoints, result interpretation, and the current application status of each assay, preliminarily compares their sensitivity and specificity for thyroid disruptors. It emphasized the need to validate these assays through testing more chemicals. [ABSTRACT FROM AUTHOR] more...

Per- and polyfluoroalkyl substances (PFASs) have attracted significant attention as a emerging environmental contaminant. The biological toxicities and ecological health risks associated with PFASs have emerged as a popular subject for ecotoxicology related research. PFASs have a detrimental impact on individual microbes in the environment. Furthermore, prolonged exposure to PFASs can disrupt the composition, structure and enzyme activity of the microbial community in the environment, disrupting the normal cycling of materials and energy in the ecosystem. This paper reviewed the impact of PFASs on microbial community structure and diversity across various environmental media, namely freshwater, marine and soil. Additionally, it summarizes the effects of enzyme activity and function in response to PFASs. Based on these findings, an assessment of the future direction of ecological risk assessment of PFASs was conducted to provide a theoretical basis and support for unbiased environmental and ecological risk assessment of PFASs. [ABSTRACT FROM AUTHOR] more...

The consumption of bisphenol A (BPA) in China has been steadily increasing as a popular plastic additive. However, it is also recognized as a typical environmental endocrine disruptor. Even at low concentrations, prolonged exposure to BPA can lead to neurotoxicity, liver toxicity, reproductive toxicity, immunotoxicity and other adverse effects, contributing to various diseases such as diabetes, inflammation, obesity, anxiety, depression and even cancer. In recent years, BPA has been detected in various environmental water bodies in China due to water pollution caused by industrial development and plastic waste discharge. Furthermore, the level of BPA exposure in each water sample varies depending on geographic regions, seasonal temperature variations, and other factors. This paper presents the latest research advancements in understanding the multiple toxic effects and strategies for mitigating the toxicity of BPA. It also provides a comprehensive summary of BPA pollution levels in various environmental water bodies in China over the past decade, along with an analysis and discussion of influencing factors. The aim is to offer valuable insights for studying population exposure doses and health risks associated with BPA. [ABSTRACT FROM AUTHOR] more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of South China Agricultural University is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of South China Agricultural University is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

The application of multi-scale segmentation method to divide slope units is confronted with issues such as subjective selection of segmentation scales, time-consuming experiments and limited suitability evaluation indicators for the results. This paper focuses on Shifang Town, Wuping County, Fujian Province as the study area, fixes the segmentation scale, and determines the optimal combination of homogeneity parameters through experimental methods in the multi-scale segmentation approach. By utilizing the homogeneity local variance change rate curve, potential segmentation scales are determined, and slope units are delineated by combining different scales with homogeneity parameter combinations. Initially, three indicators are established for evaluating the suitability of slope unit delineation results from three perspectives: geometric relationship between slope units and historical landslides, principles of slope unit delineation, and practical applications of slope units. These indicators include shape index, global Moran's I for aspect, and relief degree of landform. Case studies demonstrate that the optimization of the multi-scale segmentation method reduces the subjectivity in selecting segmentation scales and significantly decreases processing time. Additionally, the slope units determined by the suitable unit evaluation indicators are more aligned with the actual landforms and terrain features. [ABSTRACT FROM AUTHOR] more...

Based on the low cycle repeated load tests on the steel-reinforced recycled concrete filled square steel tube composite columns, the numerical calculation model of composite columns was established by ABAQUS finite element software in this paper. The stress nephogram and deformation characteristics of composite columns were analyzed, and the hysteresis curves and skeleton curves of composite columns were also studied. In addition, the reasonableness of numerical model was also verified by comparing with the test results. The results show that square steel tube column base buckled and bulged under repeated horizontal loads, the internal profile steel of composite column reaches yield and the recycled concrete is crushed, and the composite column exhibits a compression bending plastic hinge failure mode. Within the range of the analyzed parameters, the strength of square steel tube can substantially increase the bearing capacity of columns, but it reduces the ductility of columns to a certain extent. By increasing the wall thickness of square steel tube, the bearing capacity of columns is substantially increased. Reasonable design of the shear span ratio of composite columns is crucial for their seismic performance, so in practical engineering, the brittle fracture of short columns and instability of long columns should be avoided. Furthermore, as the replacement rate of recycled aggregate increases, the load carrying capacity of the combined column improves less, and their ductility decreases slightly with the increase of substitution rate. [ABSTRACT FROM AUTHOR] more...

To accurately and quickly assess the number of deaths caused by earthquakes, this paper proposes a combined assessment method based on a statistical empirical model and a machine learning model. Firstly, the number of destructive earthquakes in most provinces (autonomous regions and municipalities) of China was counted to divide the areas with different risk levels. Secondly, the LIU Jinlong model and the particle swarm optimization support vector regression model were used for evaluation. Finally, the two models were combined in parallel, and the grid search method was used to find the optimal parallel weights to construct a combined model for assessing deaths. The results show that the evaluation results of the combined model are better than those of the single model, and the evaluation effect of the model after partitioning is better. This method can provide more reliable data support for earthquake emergency response. [ABSTRACT FROM AUTHOR] more...

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Liquid crystal monomers (LCMs) are significant chemicals commonly used in thin-film transform liquid crystal display (TFT-LCD). With the huge number of LCD devices produced, many such devices end up being discarded and at best end up in e-waste sites, which raises the worry of eventually being released and entering into the natural environment. Now they have been detected in diverse sites, such as e-waste dismantling sites, landfills, and residences. As a new class of potential emerging pollutants with persistence, bioaccumulation, and toxicity, LCMs have certain environmental impacts and health risks, which deserve more attention. This paper briefly reviews the research progress of analysis methods, composition and distribution in the environment, and transformation mechanism in the atmosphere of LCMs. At the same time, in view of the environmental behavioral parameters and toxicity of LCMs, this paper expounds the shortcomings of health risk assessment methods and relative research of LCMs. Some suggestions for the comprehensive assessment of LCMs in environmental media, traceability, migration and transformation of LCMs in the environment, and toxicological studies of LCMs with high detection rates are also proposed. [ABSTRACT FROM AUTHOR] more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Guangxi Normal University - Natural Science Edition is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Laser Technology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of South China Agricultural University is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

Copyright of Journal of Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) more...

In view of the fuzzy relationship between the characteristic parameters of rock rolling motion, an accurate and fast prediction system for the characteristic parameters of rock rolling motion is constructed on the basis of its sensitivity analysis. In this paper, the grey correlation method (GRA) is introduced firstly, and the sensitivity and significance of the influencing factors of rockfall motion, such as initial velocity, slope friction angle, rockfall mass, normal recovery coefficient and tangential recovery coefficient, are studied by taking the horizontal motion distance, bounce height, collision energy and other rockfall motion characteristics as the target parameters. Then, the Gaussian process regression model is used to establish the prediction model of the rolling stone movement characteristic parameters, such as horizontal movement distance, bounce height, collision energy, which avoids the tedious modeling and calculation process of traditional numerical simulation software for rolling stone movement. The engineering case proves that the Gaussian process regression (GPR) model has the highest accuracy in predicting the horizontal distance and total kinetic energy of rolling stones. Therefore, the sensitivity analysis and prediction model of rolling stone movement characteristic parameters constructed in this paper can quickly obtain the rolling stone movement characteristic parameters, which has important practical value for the design and construction of retaining structures. [ABSTRACT FROM AUTHOR] more...

Flood disaster is one of the most serious natural disasters. The poor drainage system, related data and technology limitations, and high vulnerability of townships lead to the urgent need for technical support in townships. Spatial information technology is mainly used in flood disaster research with passive remote sensing and GIS. However, passive remote sensing data is difficult to obtain and is mainly used for post-disaster assessment. In this paper, we propose a GIS-based method for township-level flooding and inundation risk analysis to serve predisaster assessment of flooding. The Hedian Town, Suizhou City, Hubei Province is taken as the study area, and the open source data information is applied to analyze the rainfall and waterlogging processes in different recurrence periods based on historical rainfall, soil and terrain characteristics, classify the flooding risk level, and provide evacuation suggestions. The results show that the research results are basically consistent with the field research and can reflect the flooding risk in the study area more accurately. The method of this paper can provide effective data and technical support for scientific decision-making on flood disaster at the township level. [ABSTRACT FROM AUTHOR] more...

The intensive mining activities, industrial sewage discharges and agricultural sewage irrigations lead to large amounts of arsenic (As) entering into soils, inducing increased soil As pollution. Arsenic and phosphorus (P), belonging to the same group, exhibit similar chemical properties and behaviors. Arsenic is taken up by plants via root P transporters. After entering into plants, As competes and replace P in compounds, and binds with sulfhydryl groups causing protein inactivation, affecting plant growth and normal physiological metabolism. However, studies showed that As at specific levels affected plant physiological processes and plant growth. Therefore, this paper reviews the differences of As content and distribution in plants, illustrates the effects and mechanisms of As on plant biomass, nutrient uptake, growth or metabolism-related physiological and biochemical indexes (endogenous hormones, photosynthesis parameter, malondialdehyde, antioxidant enzymes, and osmotic substances), and rhizosphere properties and microbial community of plant growth promotion bacteria. The information helps to better understand the mechanisms for As-promoted plant growth in hyperaccumulators, and provides theoretical supports to develop strategies to improve plants As detoxicity and resistant ability. [ABSTRACT FROM AUTHOR] more...

Antibiotic resistance in bacteria is a major public health concern. Antibiotic resistance genes (ARGs) may be horizontally transferred between human, animal, and environmental microbiomes, potentially linking their interdependent ecosystems to public health. Birds, being among the most diverse species on the planet, can facilitate the global spread of resistance genes through their long-distance dispersal, consequently posing significant health risks. This paper reviews how wild birds can actively mediate the transmission of ARGs in ecosystems and proposes their significant roles as transmission agents. It then describes the distinct roles of urban resident birds and migratory birds in the transmission of antibiotic resistance genes. Particularly, the review highlights the pivotal role of migratory birds in the long-distance transmission of ARGs. Therefore, researching the transmission of ARGs mediated by wild birds emerges as a critical direction. [ABSTRACT FROM AUTHOR] more...

The estuary is a critical transitional zone between freshwater and marine ecosystems, which plays a pivotal role in the preservation of biodiversity and the provision of ecosystem services. The ecological integrity of estuaries is vital in the sustainable ecosystem management and conservation. This study conducted a bibliometric analysis of estuarine ecological integrity assessment, focusing on the methodologies and the selection of relevant indicators. The methodology primarily included physical-chemical, biological, and socio-economic indicators. The evaluation's significance was systematically analyzed through various indicators in several case studies. Finally, the paper identifies ongoing challenges in assessing estuarine ecological integrity and offers several suggestions to address them. [ABSTRACT FROM AUTHOR] more...