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Biomedical and Environmental Sciences 2024年第6期37卷 563-564页

作者： Junshi Chen Chinese Academy of Engineering China National center for Food safety Risk Assessment

Time flies,in the blink of an eye,it is already *** journal Biomedical and Environmental Sciences(BES)has been established for thirty-five ***,I am honored to participate in the BES’s 35th anniversary symposium,organized by the Chinese center for Disease Control and Prevention(China CDC).Seeing Director Hongbing Shen,Deputy Director Xiaoming Shi,along colleagues from the center’s affiliated units and departments,as well as fellow researchers,we have come together for this symposium under the theme of“Looking back and looking forward”,I am not only deeply appreciative and thankful,but also envisioning a bright future for BES in the next 35 years.I would like to share my thoughts and hopes under the theme of“Review and Development”.

关键词： thank Director looking

Lattice Boltzmann simulation study of anode degradation in solid oxide fuel cells during the initial aging process

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 405-411页

作者： Shixue Liu Zhijing Liu Shuxing Zhang Hao Wu Hydrogen Energy Industrial Technology Innovation center China Nuclear Power Technology Research InstituteShenzhen 518031China Shenzhen Engineering Research center for Hydrogen safety Shenzhen 518031China

For present solid oxide fuel cells(SOFCs),rapid performance degradation is observed in the initial aging process,and the dis-cussion of the degradation mechanism necessitates quantitative ***,focused ion beam-scanning electron microscopy was em-ployed to characterize and reconstruct the ceramic microstructures of SOFC *** lattice Boltzmann method(LBM)simulation of multiphysical and electrochemical processes in the reconstructed models was *** samples collected from industrial-size cells were characterized,including a reduced reference cell and a cell with an initial aging *** parameters of the reconstructed microstructures revealed a significant decrease in the active triple-phase boundary and Ni connectivity in the aged cell compared with the reference *** LBM simulation revealed that activity degradation is dominant compared with microstructural degradation during the initial aging process,and the electrochemical reactions spread to the support layer in the aged *** microstructural and activity de-gradations are attributed to Ni migration and coarsening.

关键词： solid oxide fuel cell anode degradation focused ion beam-scanning electron microscopy lattice Boltzmann method

Autoimmune gastritis studies and gastric cancer: True renaissance or bibliometric illusion

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World Journal of Gastroenterology 2024年第32期30卷 3783-3790页

作者： Vasily Isakov Department of Gastroenterology and Hepatology Federal Research Center of NutritionBiotechnology and Food SafetyMoscow 115446Russia

A bibliometric analysis of studies dedicated to autoimmune gastritis(AIG)recently published demonstrated a noteworthy surge in publications over the last three *** can be explained by numerous publications from different regions of the world reporting the results of several studies that stimulated reassessment of our view of AIG as a precancerous ***-up studies and retrospective analyses showed that the risk of gastric cancer(GC)in AIG patients is much lower than expected if the patients ever being infected with Helicobacter pylori(***)were *** low prevalence of precancerous lesions,such as the incomplete type of intestinal metaplasia,may explain the low risk of GC in AIG patients because the spasmolytic polypeptide-expressing metaplasia commonly observed in AIG does not involve clonal reprogramming of the gastric gland and can be considered as an adaptive change rather than a true precancerous ***,changes in gastric secretion due to the progression of gastric atrophy during the course of AIG cause changes in the gastric microbiome,stimulating the growth of bacterial species such as streptococci,which may promote the development of precancerous lesions and ***,Streptococcus anginosus exhibited a robust proinflammatory response and induced the gastritis-atrophy-metaplasia-dysplasia sequence in mice,reproducing the wellestablished process for carcinogenesis associated with *** studies in ***-naïve patients evaluating gastric microbiome changes during the long-term course of AIG might provide an explanation for the enigmatic increase in GC incidence in the last decades in younger cohorts,which has been reported in economically developed countries.

关键词： Autoimmune gastritis Gastric cancer Type 1 neuroendocrine tumors Helicobacter pylori Streptococcus anginosus Intestinal metaplasia

Response characteristics of PWR primary circuit under SBLOCAs considering steam bypass discharging

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Nuclear Science and Techniques 2024年第6期35卷 189-201页

作者： Shuai Yang Xiang-Bin Li Yu-Sheng Liu Jia-Ning Xu De-Chen Zhang School of Nuclear Science and Engineering North China Electric Power UniversityBeijing 102206China Beijing Key Laboratory of Passive safety Technology for Nuclear Energy Beijing 102206China Nuclear and Radiation safety center MEPBeijing 100084China

Small-break superposed station blackout(SBO)accidents are the basic design accidents of nuclear power *** the condition of a small break in the cold leg,SBO further increases the severity of the accident,and the steam bypass discharg-ing system(GCT)in the second circuit can play an important role in guaranteeing core *** explore the influence of the GCT on the thermal-hydraulic characteristics of the primary circuit,RELAP5 software was used to establish a numerical model based on a typical pressurized water reactor nuclear power *** different small breaks in the cold-leg super-posed SBO were selected,and the impact of the GCT operation on the transient response characteristics of the primary and secondary circuit systems was *** results show that the GCT plays an indispensable role in core heat removal during an accident;otherwise,core safety cannot be *** GCT was used in conjunction with the primary safety injection system during the placement *** the break diameter was greater than a certain critical value,the core cooling rate could not be guaranteed to be less than 100 K/h;however,the core remained in a safe state.

关键词： Steam bypass discharging Pressurized water reactor SBLOCA Numerical simulation

Changes of Terrestrial Water Storage in the Yellow River Basin Under Global Warming

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Journal of Tropical Meteorology 2024年第2期30卷 132-148页

作者：曾昕瑞管晓丹陈涵魏志敏王国栋 Collaborative Innovation center for Western Ecological safety College of Atmospheric SciencesLanzhou UniversityLanzhou 730000 China

The increasing temperature in the Yellow River Basin has led to a rapid rise in the melting level height,at a rate of 5.98 m yr^(-1)during the cold season,which further contributes to the transition from snowfall to rainfall *** 1979 and 2020,there has been a decrease in snowfall in the Yellow River Basin at a rate of-3.03 mm dec^(-1),while rainfall has been increasing at a rate of 1.00 mm dec^(-1).Consequently,the snowfall-to-rainfall ratio(SRR)has *** directly replenishes terrestrial water storage(TWS)in solid form until it melts,while rainfall is rapidly lost through runoff and evaporation,in addition to infiltrating underground or remaining on the ***,the decreasing SRR accelerates the depletion of water *** to the surface water balance equation,the reduction in precipitation and runoff,along with an increase in evaporation,results in a decrease in TWS during the cold season within the Yellow River *** addition to climate change,human activities,considering the region's dense population and extensive agricultural land,also accelerate the decline of ***,irrigation accounts for the largest proportion of water withdrawals in the Yellow River Basin(71.8%)and primarily occurs during the warm season(especially from June to August).The impact of human activities and climate change on the water cycle requires further in-depth research.

关键词： terrestrial water storage melting level height surface water balance human activities Yellow River Basin

Exposure to Chloropropanols and Their Fatty Acid Esters and Glycidyl Fatty Acid Esters in the Sixth Total Diet Study—China,2016-2019

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China CDC weekly 2024年第24期6卷 563-567,I0001页

作者： Dan Huang Xiaomin Xu Bing Lyu Jingguang Li Yunfeng Zhao Yongning Wu School of Population Medicine and Public Health Chinese Academy of Medical Sciences Peking Union Medical CollegeBeijingChina NHC Key Lab of Food safety Risk Assessment Research Unit of Food SafetyChina National Center for Food Safety Risk AssessmentBeijingChina Zhejiang Provincial center for Disease Control and Prevention Hangzhou CityZhejiang ProvinceChina

What is already known about this topic?Chloropropanols,along with their fatty acid esters and glycidyl fatty acid esters(GEs),are prevalent contaminants in a variety of processed foods,posing potential health risks to *** is added by this report?In the Sixth China Total Diet Study(TDS),3-monochloropropane-1,2-diol esters(3-MCPD esters)and GEs were identified as the predominant chloropropanols and their esters in composite food ***(47.0%)and cereals(15.4%)were the major contributors to exposure among the 12 food categories *** are the implications for public health practice?The Sixth China TDS highlighted concerns regarding potential health risks associated with dietary exposure to *** study underscores the need for further attention in devising practical strategies to mitigate dietary exposure to GEs.

关键词： esters predominant 1,2

Time-History Dynamic Characteristics of Reinforced Soil-Retaining Walls

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Structural Durability & Health Monitoring 2024年第6期18卷 853-869页

作者： Lianhua Ma Min Huang Linfeng Han Department of Building and Environmental safety Chongqing Vocational Institute of Safety&TechnologyChongqing404120China National Engineering Research center for Inland Waterway Regulation Chongqing Jiaotong UniversityChongqing400074China

Given the complexities of reinforced soil materials’constitutive relationships,this paper compares reinforced soil composite materials to a sliding structure between steel bars and soil and proposes a reinforced soil constitutive model that takes this sliding into account.A finite element dynamic time history calculation software for composite response analysis was created using the Fortran programming language,and time history analysis was performed on reinforced soil retaining walls and gravity retaining *** vibration time histories of reinforced soil retaining walls and gravity retaining walls were computed,and the dynamic reactions of the two types of retaining walls to vibration were compared and *** dynamic performance of reinforced earth retaining walls was evaluated.

关键词： Reinforced earth retaining walls time history dynamic analysis finite element

Research progress on electrolyte key salts for sodium-ion batteries

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Progress in Natural Science:Materials International 2024年第02期34卷 263-273页

作者： weimin Zhao Miao Wang Haichen Lin Kangwoon Kim Rongkai He Shijie Feng Haodong Liu College of Chemical Engineering and safety Binzhou University center for Memory and Recording Research Building University of California San Diego STATE GRID Liaocheng Power Supply Company

Sodium-ion batteries(SIBs) are considered potential successors to lithium-ion batteries in the fields of energy storage and low-speed vehicles, thanks to their advantages such as abundant raw material sources, high energy density, and a wide operational temperature range. However, several scientific and engineering challenges still require attention in the development of sodium-ion batteries. Electrolyte salts, as a key component of sodium-ion battery electrolytes, play a critical role in battery performance. This paper provides a brief overview of the research progress on different electrolyte salt systems in sodium-ion batteries. It discusses characteristics such as ionic conductivity, electrochemical windows, electrochemical performance, and thermal safety in various solvent systems. Furthermore, the paper summarizes a series of strategies for controlling electrolyte and electrode interfaces, offering references for addressing the challenges in the mass production and application of sodium-ion batteries.

关键词： Electrochemical performance Electrolyte Electrolyte salts Sodium ion batteries

Asymmetric Drying and Wetting Trends in Eastern and Western China

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Advances in Atmospheric Sciences 2024年第2期41卷 221-232页

作者： Wen WU Fei JI Shujuan HU Yongli HE College of Atmospheric Sciences Lanzhou UniversityLanzhou 730000China Collaborative Innovation center for Western Ecological safety Lanzhou UniversityLanzhou 730000China

As an important factor that directly affects agricultural production, the social economy, and policy implementation,observed changes in dry/wet conditions have become a matter of widespread concern. However, previous research has mainly focused on the long-term linear changes of dry/wet conditions, while the detection and evolution of the non-linear trends related to dry/wet changes have received less attention. The non-linear trends of the annual aridity index, obtained by the Ensemble Empirical Mode Decomposition(EEMD) method, reveal that changes in dry/wet conditions in China are asymmetric and can be characterized by contrasting features in both time and space in China. Spatially, most areas in western China have experienced transitions from drying to wetting, while opposite changes have occurred in most areas of eastern China. Temporally, the transitions occurred earlier in western China compared to eastern China. Research into the asymmetric spatial characteristics of dry/wet conditions compensates for the inadequacies of previous studies, which focused solely on temporal evolution;at the same time, it remedies the inadequacies of traditional research on linear trends over centennial timescales. Analyzing the non-linear trend also provides for a more comprehensive understanding of the drying/wetting changes in China.

关键词： aridity index EEMD dry/wet conditions asymmetric evolution

The Effect and Mechanism of Fructus lycii on Improvement of Exercise Fatigue Using a Network Pharmacological Approach with in vitro Experimental Verification

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Biomedical and Environmental Sciences 2024年第1期37卷 42-53页

作者： JI Xiao Ning LIU Zhao Ping ZHANG Chao Zheng CHEN Min LIANG Jiang LU Jiang ZHANG Lei National Resource center for Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100700China China National center for Food safety Risk Assessment Beijing 100022China Chinese center for Disease Control and Prevention Beijing 102206China

Objective This study aimed to investigate the effect and underlying mechanism of Fructus lycii in improving exercise *** A network pharmacological approach was used to explore potential mechanisms of action of Fructus *** muscle C2C12 cells and immunofluorescence were employed to verify the effect and mechanism of the representative components in Fructus lycii predicted by network pharmacological *** Six potential active components,namely quercetin,β-sitosterol,stigmasterol,7-Omethylluteolin-6-C-beta-glucoside_qt,atropine,and glycitein,were identified to have potency in improving exercise fatigue via multiple pathways,such as the PI3K-Akt,neuroactive ligand-receptor interaction,IL-17,TNF,and MAPK signaling *** immunofluorescence results indicated that quercetin,a significant active component in Fructus lycii,increased the mean staining area of 2-NBDG,TMRM,and MitoTracker,and decreased the area of CellRox compared to the ***,the protein expression levels of p-38 MAPK,p-MAPK,p-JNK,p-PI3K,and p-AKT markedly increased after quercetin *** Fructus lycii might alleviate exercise fatigue through multiple components and *** these,quercetin appears to improve exercise fatigue by enhancing energy metabolism and reducing oxidative *** PI3K-AKT and MAPK signaling pathways also appear to play a role in this process.

关键词： Fructus lycii Exercise fatigue Network pharmacology