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Simultaneous removal of Cd(Ⅱ)and As(Ⅴ)by ferrihydrite-biochar composite:Enhanced effects of As(Ⅴ)on Cd(Ⅱ)adsorption

Journal of Environmental Sciences 2024年第5期139卷 267-280页

作者： Wenjun Zeng Yang Lu Jingyan Zhou Jie zhang Yuanxiao Duan Changxun Dong wencheng Wu College of Sciences Nanjing Agricultural UniversityNanjing 210095China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510655China Guangdong Engineering&Technology Research Center for System Control of Livestock and Poultry breeding Pollution Guangzhou 510655China

The coexistence of cadmium(Cd(Ⅱ))and arsenate(As(Ⅴ))pollution has long been an environmental ***,a porous carbonaceous material with tunable functionality,has been used for the remediation of contaminated ***,it is still challenging for the dynamic quantification and mechanistic understanding of the simultaneous sequestration of multi-metals in biochar-engineered environment,especially in the presence of *** this study,ferrihydrite was coprecipitated with biochar to investigate how ferrihydritebiochar composite affects the fate of heavy metals,especially in the coexistence of Cd(Ⅱ)and As(Ⅴ).In the solution system containing both Cd(Ⅱ)and As(Ⅴ),the maximum adsorption capacities of ferrihydrite-biochar composite for Cd(Ⅱ)and As(Ⅴ)reached 82.03μmol/g and 531.53μmol/g,respectively,much higher than those of the pure biochar(26.90μmol/g for Cd(Ⅱ),and 40.24μmol/g for As(Ⅴ))and ferrihydrite(42.26μmol/g for Cd(Ⅱ),and 248.25μmol/g for As(Ⅴ)).Cd(Ⅱ)adsorption increased in the presence of As(Ⅴ),possibly due to the changes in composite surface charge in the presence of As(Ⅴ),and the increased dispersion of ferrihydrite by *** microscopic and mechanistic results showed that Cd(Ⅱ)complexed with both biochar and ferrihydrite,while As(Ⅴ)was mainly complexed by ferrihydrite in the Cd(Ⅱ)and As(Ⅴ)coexistence *** posed vital importance for the co-adsorption of Cd(Ⅱ)and As(Ⅴ).The different distribution patterns revealed by this study help to a deeper understanding of the behaviors of cations and anions in the natural environment.

关键词： Ferrihydrite Biochar Cadmium Arsenate Simultaneous sequestration Binding mechanisms

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Liver cell therapies:cellular sources and grafting strategies

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Frontiers of Medicine 2023年第3期17卷 432-457页

作者： wencheng zhang Yangyang Cui Yuan Du Yong Yang Ting Fang Fengfeng Lu Weixia Kong Canjun Xiao Jun Shi Lola M.Reid Zhiying He Institute for Regenerative Medicine Ji’an HospitalShanghai East HospitalSchool of Life Sciences and TechnologyTongji UniversityShanghai 200123China Shanghai Engineering Research Center of Stem Cells Translational Medicine Shanghai 200335China Shanghai Institute of Stem Cell Research and Clinical Translation Shanghai 200120China Postgraduate Training Base of Shanghai East Hospital Jinzhou Medical UniversityJinzhou 121001China The First Affiliated Hospital of Nanchang University Nanchang 330006China Graduate School of Frontier Biosciences Osaka UniversitySuitaOsaka565-0871Japan Department of General Surgery Ji’an HospitalShanghai East HospitalSchool of MedicineTongji UniversityJi’an 343006China Department of Cell Biology and Physiology and Program in Molecular Biology and Biotechnology/UNC School of Medicine Chapel HillNC 27599USA

The liver has a complex cellular composition and a remarkable regenerative *** primary cell types in the liver are two parenchymal cell populations,hepatocytes and cholangiocytes,that perform most of the functions of the liver and that are helped through interactions with non-parenchymal cell types comprising stellate cells,endothelia and various hemopoietic cell *** regulation of the cells in the liver is mediated by an insoluble complex of proteins and carbohydrates,the extracellular matrix,working synergistically with soluble paracrine and systemic *** recent years,with the rapid development of genetic sequencing technologies,research on the liver’s cellular composition and its regulatory mechanisms during various conditions has been extensively *** breakthroughs in strategies for cell transplantation are enabling a future in which there can be a rescue of patients with end-stage liver diseases,offering potential solutions to the chronic shortage of livers and alternatives to liver *** review will focus on the cellular mechanisms of liver homeostasis and how to select ideal sources of cells to be transplanted to achieve liver regeneration and *** advances are summarized for promoting the treatment of end-stage liver diseases by forms of cell transplantation that now include grafting strategies.

关键词： liver regeneration hepatocytes cholangiocytes stem cells organoids regulatory mechanisms transplantation/grafting strategies

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高原IBS与肠屏障损伤、炎性介质及神经递质的相关性研究

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天津医药 2024年第5期52卷 499-504页

作者：张兴光王邦茂刘涛涛张文成董艳美李小青牛海艳夏时海武警特色医学中心消化内科 300162 天津医科大学总医院消化内科

目的分析高原环境下肠易激综合征(IBS)患者的肠屏障损伤指标、神经递质及炎性介质变化,探讨IBS的潜在发病机制。方法81例男性汉族健康志愿者自平原进入西藏拉萨并完成1年前瞻性队列观察,其中诊断IBS(罗马Ⅳ)13例(IBS组),并随机抽取11例... 详细信息

目的分析高原环境下肠易激综合征(IBS)患者的肠屏障损伤指标、神经递质及炎性介质变化,探讨IBS的潜在发病机制。方法81例男性汉族健康志愿者自平原进入西藏拉萨并完成1年前瞻性队列观察,其中诊断IBS(罗马Ⅳ)13例(IBS组),并随机抽取11例健康者为对照组(NC组),另随机抽取从平原进入拉萨1周内且未发生急性高山病者11例为NC早期组。采用酶联免疫吸附试验(ELISA)检测血清二胺氧化酶(DAO)和肠脂肪酸结合蛋白(IFABP)、5羟色胺(5-HT)、白细胞介素(IL)-6、IL-17A及脂多糖(LPS)水平;随访末月,IBS中9例行肠镜检查及肠黏膜病理活检,NC组中4例行肠镜检查。结果高原环境下IBS患者肠镜及病理结果提示肠黏膜轻度炎症表现。与NC早期组比较,NC组进入拉萨后3个月时5-HT、DAO、I-FABP、IL-6、IL-17A和LPS水平及6个月时5-HT、I-FABP、IL6和LPS水平均升高,IBS组3、6个月时6项血清学指标均升高(P<0.05);与NC组比较,IBS组3个月时5-HT和LPS水平降低,6个月时DAO、I-FABP、IL-6、IL-17A和LPS水平升高(P<0.05)。NC组6个月时6项血清学指标均较3个月时降低(P<0.05);IBS组3个月与6个月时血清学指标差异均无统计学意义。结论肠黏膜屏障损伤指标、神经递质及炎性介质可能参与高原环境下IBS的发生。

关键词：肠易激综合征血清素脂肪酸结合蛋白质类白细胞介素6 高原环境

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Advantages of nasogastric tube feeding during neoadjuvant concurrent chemoradiotherapy for esophageal cancer:A retrospective study

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Radiation Medicine and Protection 2023年第2期4卷 98-103页

作者： Jie Dong Qingwu Du Tian zhang Xi Chen wencheng zhang Yajun Chen Yaqi Zeng Chunlei Li Yueying Li Yujie Wang Kun Wang Qingsong Pang Department of Nutrition Therapy Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerTianjin’s Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin300060China Department of Radiation Oncology Tianjin Medical University Cancer Institute&HospitalNational Clinical Research Center for CancerTianjin’s Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjin300060China

ObjectiveTo compare the effects of oral intake and nasogastric tube(NG)feeding on nutritional status,complications and survival during neoadjuvant chemoradiotherapy for esophageal squamous-cell carcinoma(ESCC)*** total of 61 ESCC cases treated with neoadjuvant chemoradiotherapy from December 2018 to March 2020 were enrolled,including(38 in oral intake group,and 22 in NG feeding *** characteristics and baseline nutritional markers were collected in both *** status,complication and completion rate of chemoradiotherapy in both groups were *** with the oral intake group,patients in the NG feeding group had a later T stage(P=0.027)and clinical stage(P=0.014).The levels of energy intake(P=0.033),serum prealbumin(P0.05).ConclusionsAs a safe and effective enteral nutrition approach to improving nutrition,nasogastric tube feeding could increase treatment completion rate and reduce the incidence of≥grade 2 esophagitis reaction during ne

关键词： Nasogastric tube feeding Oral intake Nutritional status Neoadjuvant chemoradiotherapy Esophageal cancer

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基于中国木材市场谈国家储备林的发展

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中南林业调查规划 2024年第2期43卷 5-9页

作者：王志海舒勇胡小燕詹寿东李朝阳张文成国家林业和草原局中南调查规划院湖南长沙410014

大径材是国家重要的资源之一,国家储备林是我国开展木材战略储备基地建设的重要举措。以2010一2021年的木材产量、木材进口量和木材需求量数据为基础,基于国内木材市场的供需现状,对木材供给量及需求量进行趋势分析及预测。结果表明:近... 详细信息

大径材是国家重要的资源之一,国家储备林是我国开展木材战略储备基地建设的重要举措。以2010一2021年的木材产量、木材进口量和木材需求量数据为基础,基于国内木材市场的供需现状,对木材供给量及需求量进行趋势分析及预测。结果表明:近年来,随着社会经济的不断发展,木材需求量总体呈上升趋势;国内木材总量不足,小径材多大径材少,而国家储备林建设是精准提升森林质量的重要工程,对于解决木材供应、实现“碳中和”目标具有重要作用。通过分析国家储备林的建设现状与发展策略,以期为各地开展国家储备林基地建设提供参考。

关键词：木材市场大径材国家储备林

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Analysis on CO2 Emissions Transferred from Developed Economies to China through Trade

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China & World Economy 2016年第2期24卷 68-89页

作者： wencheng zhang Shuijun Peng Nankai Institute of International Economics Nankai UniversityTianjinChina Department of International Economics and Business School of EconomicsXiamen UniversityXiamenChina

Based on a global input-output model, this paper investigates the CO2 emission transfer between China and developed economies through trade. The results show that approximately 15-23 percent of China＇s production-based emissions during 1995-2009 were induced by the production of goods and services satisfying final demand in developed economies. Decomposition of emission transfers shows that trade of intermediate products played a significant role in emission transfer from developed economies to China. Most developed economies have consumption-based emission responsibilities that are higher than their production-based responsibilities, whereas China＇s consumption-based responsibility is significantly lower than its production-based responsibility. We argue that a fair and efficient carbon accounting approach should take CO 2 emission transfers from developed economies to developing economies into consideration. It is important that China and its developed trade partners cooperate in reducing emission transfers.

关键词： CO2 emission transfer consumption-based emissions multi-regional inputoutput model production-based emissions

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Associations of genome-wide structural variations with phenotypic differences in cross-bred Eurasian pigs

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Journal of Animal Science and Biotechnology 2024年第1期15卷 68-87页

作者： wencheng Zong Jinbu Wang Runze Zhao Naiqi Niu Yanfang Su Ziping Hu Xin Liu Xinhua Hou Ligang Wang Lixian Wang Longchao zhang State Key Laboratory of Animal Biotech Breeding Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China College of Animal Science Shanxi Agricultural UniversityJinzhong 030801China College of Animal Science and Technology Qingdao Agricultural UniversityQingdao 266109China

Background During approximately 10,000 years of domestication and selection,a large number of structural variations(SVs)have emerged in the genome of pig breeds,profoundly influencing their phenotypes and the ability to adapt to the local ***(≥50 bp)are widely distributed in the genome,mainly in the form of insertion(INS),mobile element insertion(MEI),deletion(DEL),duplication(DUP),inversion(INV),and translocation(TRA).While studies have investigated the SVs in pig genomes,genome-wide association studies(GWAS)-based on SVs have been rarely *** Here,we obtained a high-quality SV map containing 123,151 SVs from 15 Large White and 15 Min pigs through integrating the power of several SV tools,with 53.95%of the SVs being reported for the first *** high-quality SVs were used to recover the population genetic structure,confirming the accuracy of *** functional SV loci were then identified based on positional effects and breed ***,GWAS were performed for 36 traits by genotyping the screened potential causal loci in the F2 population according to their corresponding genomic *** identified a large number of loci involved in 8 carcass traits and 6 skeletal traits on chromosome 7,with FKBP5 containing the most significant SV locus for almost all *** addition,we found several significant loci in intramuscular fat,abdominal circumference,heart weight,and liver weight,*** We constructed a high-quality SV map using high-coverage sequencing data and then analyzed them by performing GWAS for 25 carcass traits,7 skeletal traits,and 4 meat quality traits to determine that SVs may affect body size between European and Chinese pig breeds.

关键词： Body size GWAS Pig Skeleton Structural variations

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Effects of dietary nickel on detoxification enzyme activities in the midgut of Spodoptera litura Fabricius larvae

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Chinese Science Bulletin 2008年第21期53卷 3324-3330页

作者： SUN HongXia ZHOU Qiang TANG wencheng SHU YingHua zhang GuRen State key laboratory for Biological Control & Institute of Entomology Sun Yat-sen University Guangzhou 510275 China

Nickel accumulated in midugt of Spodoptera litura Fabricius could induce the expression of metal-lothionein,one of the most important detoxification proteins in *** the present study,the effects of dietary nickel on the activities of detoxification enzymes,such as carboxylesterase(CarE) and glutathione S-transferase(GST) in the midgut of *** larvae have been studied to get an un-derstanding of the detoxification mechanisms of *** larvae to excessive *** showed that CarE activities in the midgut of the 5th instar larvae decreased at lower levels of nickel(≤5 mg/kg),while increased with increasing nickel doses at higher levels of nickel(≥10 mg/kg) exposure in suc-cessive 3 *** activities of the 6th instar larvae were also characterized as inhibited at low levels of nickel exposure,and improved at higher levels in the 1st *** activities of 6th instar larvae in the 2nd and 3rd generations were all lower than that in ***,GST activities in the midgut of the 5th and 6th instar larvae all increased with increasing nickel doses(1―20 mg/kg) in diets.

关键词：镍元素中肠羧酸酯酶转移酶

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火花源原子发射光谱法快速测定非晶合金中硅和硼的含量

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理化检验（化学分册） 2023年第7期59卷 859-861页

作者：张文诚太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室太原030003 山西太钢不锈钢股份有限公司技术中心太原030003

非晶合金又称“液态金属”“金属玻璃”,是一种新型软磁合金材料,主要包含铁、硅、硼等元素[1]。独特的无序原子结构,使得非晶合金具有良好的物理及化学性能,在航空航天、电子设备、工业设备等方面有广泛应用[2-3]。非晶合金的主要制品... 详细信息

非晶合金又称“液态金属”“金属玻璃”,是一种新型软磁合金材料,主要包含铁、硅、硼等元素[1]。独特的无序原子结构,使得非晶合金具有良好的物理及化学性能,在航空航天、电子设备、工业设备等方面有广泛应用[2-3]。非晶合金的主要制品为非晶合金薄带,制备工艺是首先冶炼非晶母合金,再经重熔、急冷快淬而制成。在非晶合金中加入原子尺寸较小的硅、硼和碳元素,可以改善非晶合金的热稳定性和软磁性能.

关键词：火花源原子发射光谱法非晶合金碳元素原子结构原子尺寸化学性能金属玻璃软磁性能

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火花放电原子发射光谱法测定铁铬铝不锈钢中高含量铝

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冶金分析 2023年第5期43卷 46-51页

作者：张爽张文诚张征宇太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室山西太钢不锈钢股份有限公司技术中心

铁铬铝不锈钢是非常重要的电热合金材料，铝含量的精准控制对提高其性能有重要的影响。用国际标准样品结合自制的太钢铁铬铝不锈钢控制样品绘制校准曲线，选择Al 308.22 nm为分析谱线，建立了火花放电原子发射光谱法测定铁铬铝不锈钢中... 详细信息

铁铬铝不锈钢是非常重要的电热合金材料，铝含量的精准控制对提高其性能有重要的影响。用国际标准样品结合自制的太钢铁铬铝不锈钢控制样品绘制校准曲线，选择Al 308.22 nm为分析谱线，建立了火花放电原子发射光谱法测定铁铬铝不锈钢中高含量铝(Al质量分数在0.46%～6.12%之间)的方法。选择除了Al之外其他元素含量都比较接近的普通不锈钢样品与铁铬铝不锈钢样品作为对照组，进行金相观察。结果表明，普通不锈钢样品的晶粒尺寸较小，而铁铬铝不锈钢样品的晶粒明显细化，且边界轮廓致密、清晰，说明铁铬铝不锈钢样品的表面较为致密，这可能是铁铬铝不锈钢样品激发强度受其表面影响更大、测定结果波动较大的原因。重点考察了预燃时间对测定的影响，结果表明，Al的激发强度在预燃时间为8～11 s范围内相对稳定，最终选择预燃时间为11 s。取3块Al含量不同的铁铬铝不锈钢样品，按照实验方法进行10次平行分析，同时采用电感耦合等离子体原子发射光谱法(ICP-AES)进行方法对照试验，结果表明，两种方法测定结果具有良好的一致性，实验方法测定结果的相对标准偏差(RSD,n=10)为0.53%～0.98%。

关键词：铁铬铝不锈钢火花放电原子发射光谱法铝预燃时间

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