检索结果-南通市图书馆

Recent advancements in hydrometallurgical recycling technologies of spent lithium-ion battery cathode materials

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第3期43卷 879-899页

作者： Juan Wu Li Xiao Li shen Jian-Jun Ran Hui Zhong Yi-rong Zhu Han Chen College of Materials and Advanced Manufacturing Hunan University of TechnologyZhuzhou412007China School of Resources Processing and Bioengineering Central South UniversityChangsha410083China Guangdong JiaNa Energy Technology Company Qingyuan513000China

The rapidly increasing production of lithium-ion batteries(LIBs)and their limited service time increases the number of spent LIBs,eventually causing serious environmental issues and resource *** the perspectives of clean production and the development of the LIB industry,the effective recovery and recycling of spent LIBs require urgent *** study provides an overview of the current hydrometallurgical processes employed in the recycling of spent cathode materials,focusing on the leaching of valuable metals and their *** particular,this research reviews the various leaching systems(inorganic acid,organic acid,and ammonia)and the separation of valuable metals,and then,recommendations for subsequent study are offered in an attempt to contribute to the development of highly efficient methods for recycling spent cathode *** addition,a range of existing technologies,such as solvent extraction,chemical precipitation,electrochemical deposition,and regeneration,for the postprocessing of leaching solutions are ***,the promising technologies,existing challenges and suggestions with respect to the development of effective and environmentally friendly recycling methods for handling spent cathode materials are identified.

关键词： Spent lithium-ion batteries(LIBs) Cathode material Hydrometallurgy Leaching Recycling

Modulation of starch digestibility using non-thermal processing techniques:A review

在线全文

学校读者我要写书评

暂无评论

Grain & Oil Science and Technology 2024年第3期7卷 209-218页

作者： Liyuan rong Weiqi Fei Zhijun Wang Xianxiang Chen Huiliang Wen Jianhua Xie Mingyue shen State Key Laboratory of Food Science and Resources Nanchang UniversityNanchang 330047China School of Biosystems and Food Engineering University College DublinDublinIreland

Obesity and type 2 diabetes are widespread throughout the world, especially in developed countries. Starch is an important part of human staple food, the modulating of starch digestibility is conducive to reducing postprandial blood glucose levels and alleviating the chronic disease caused by high caloric intake. The digestion properties of starch are correlated with its structural features, including crystallization, amylose/amylopectin ratio, non-starch components, etc. Among the modified methods applied to regulate starch digestibility, non-thermal processing techniques(NTPT) receive extensive attention due to the characteristics of safety, environmental friendliness and high efficiency. The influence and mechanism of NTPT on the digestion properties of starch are discussed in this review, including ultrasounds, high pressure, γ-irradiation, etc. NTPT induces the alternation of morphological and structural characteristics of native starch, changing their sensitivity to enzymes. The effects of NTPT on the digestibility of starch are highly related to the processing parameters and structure characteristics of native starch. The review shows that NTPT is an effective way to modulate the digestion properties of starch and prevent people from suffering from chronic diseases such as obesity and type 2 diabetes.

关键词： Digestibility Non-thermal processing Chronic disease Starch

Long non-coding RNA GATA6-AS1 is mediated by N6-methyladenosine methylation and inhibits the proliferation and metastasis of gastric cancer

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2024年第3期16卷 1019-1028页

作者： Jun-Jie shen Min-Chang Li Shao-qi Tian Wen-Ming Chen Department of Oncology Jiangxi Hospital of Integrated Chinese and Western MedicineNanchang 330000Jiangxi ProvinceChina Department of Hepatopancreatobiliary Surgery Jiangxi Hospital of Integrated Chinese and Western MedicineNanchang 330000Jiangxi ProvinceChina Clinical Medical School Jining Medical UniversityJining 272000Shandong ProvinceChina Department of Oncology Jining No.1 People’s HospitalJining 272011Shandong ProvinceChina

BACKGROUND Through experimental research on the biological function of GATA6-AS1,it was confirmed that GATA6-AS1 can inhibit the proliferation,invasion,and migration of gastric cancer cells,suggesting that GATA6-AS1 plays a role as an anti-oncogene in the occurrence and development of gastric *** experi-ments confirmed that the overexpression of fat mass and obesity-associated protein(FTO)inhibited the expression of GATA6-AS1,thereby promoting the occurrence and development of gastric *** To investigate the effects of GATA6-AS1 on the proliferation,invasion and migration of gastric cancer cells and its mechanism of *** We used bioinformatics methods to analyze the Cancer Genome Atlas(https://***/.The Cancer Genome Atlas)and download expression data for GATA6-AS1 in gastric cancer tissue and normal *** also constructed a GATA6-AS1 lentivirus overexpression vector which was transfected into gastric cancer cells to investigate its effects on proliferation,migration and invasion,and thereby clarify the expression of GATA6-AS1 in gastric cancer and its biological role in the genesis and development of gastric ***,we used a database(http://***/starbase2/)to analysis GATA6-AS1 whether by m6A methylation modify regulation and predict the methyltransferases that may methylate ***,RNA immunoprecipitation experiments confirmed that GATA6-AS1 was able to bind to the m6A methylation modification *** data allowed us to clarify the ability of m6A methylase to influence the action of GATA6-AS1 and its role in the occurrence and development of gastric *** Low expression levels of GATA6-AS1 were detected in gastric *** also determined the effects of GATA6-AS1 overexpression on the biological function of gastric cancer ***6-AS1 had strong binding ability with the m6A demethylase FTO,which was expressed at high levels in gastric cancer and negatively correlat

关键词： Long non-coding RNA GATA6-AS1 N6-methyladenine modification Fat mass and obesity-associated protein Gastric cancer

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

植物叶片氨挥发研究进展

生态与农村环境学报 2006年第2期22卷 80-84页

作者：吴小庆徐阳春沈其荣南京农业大学资源与环境科学学院江苏南京210095

氨是大气污染的一个重要组成部分,植物叶片氨挥发是大气氨污染的来源之一。植物氨挥发的强弱与植株氮素利用效率有很好的相关性,很多研究表明,植株收获时的总氮量一般显著小于植株氮素最大累积量,植株生长后期体内含氮化合物的水解和氨... 详细信息

氨是大气污染的一个重要组成部分,植物叶片氨挥发是大气氨污染的来源之一。植物氨挥发的强弱与植株氮素利用效率有很好的相关性,很多研究表明,植株收获时的总氮量一般显著小于植株氮素最大累积量,植株生长后期体内含氮化合物的水解和氨的挥发可能是其重要原因。因此,研究植物体的氨挥发对于大气环境保护和提高氮肥利用率具有非常重要的意义。本文对植物叶片氨挥发的主要测定方法、机理和影响因素进行了综述,对植物叶片氨挥发研究中的一些问题进行了讨论。

关键词：叶片氨挥发氨污染

土壤微生物量和土壤固定态铵的变化及水稻对残留N的利用

在线全文

学校读者我要写书评

暂无评论

土壤学报 2000年第3期37卷 330-338页

作者：沈其荣王岩史瑞和南京农业大学资环学院

在小麦盆栽试验后的１５Ｎ标记土壤上，研究了水稻生长过程中土壤微生物量Ｃ、Ｎ和土壤固定态铵的变化及其有机无机肥料残留Ｎ的有效性。结果表明，土壤微生物量Ｃ随着水稻生长而逐渐增加，到收获时达到１３７８．６～１７９０．５ｍｇ... 详细信息

在小麦盆栽试验后的１５Ｎ标记土壤上，研究了水稻生长过程中土壤微生物量Ｃ、Ｎ和土壤固定态铵的变化及其有机无机肥料残留Ｎ的有效性。结果表明，土壤微生物量Ｃ随着水稻生长而逐渐增加，到收获时达到１３７８．６～１７９０．５ｍｇ／ｋｇ土；土壤微生物量Ｎ的变化与水稻吸收Ｎ素有关，开始时由于淹水使得土壤微生物量Ｎ有所下降，但随后又有所增加；随着水稻对Ｎ的吸收增加，生物量Ｎ又下降，直到水稻成熟期又有所恢复。在整个水稻生长季节中，土壤固定态铵的含量变化不大，但其中的一些１５Ｎ仍与外界土壤中矿质Ｎ发生了交换，表明这些固定态铵对水稻仍有较高的有效性。

关键词：水稻微生物量固定态铵土壤氮素

Enhancing thermodynamic stability of single-crystal Ni-rich cathode material via a synergistic dual-substitution strategy

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第1期88卷 428-436,I0010页

作者： Jixue shen Hui Li Haoyu qi Zhan Lin Zeheng Li Chuanbo Zheng Weitong Du Hao Chen Shanqing Zhang School of Metallurgy Engineering Jiangsu University of Science and TechnologyZhangjiagang 215600JiangsuChina School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center Jieyang 515200GuangdongChina Institute of Sustainable Transformation School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006GuangdongChina Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Centre for Catalysis and Clean Energy School of Environment and ScienceGold Coast CampusGriffith UniversityGold Coast 4222QueenslandAustralia

Nickel(Ni)-rich cathode materials have become promising candidates for the next-generation electrical vehicles due to their high specific ***,the poor thermodynamic stability(including cyclic performance and safety performance or thermal stability)will restrain their wide commercial ***,a single-crystal Ni-rich Li Ni_(0.83)Co_(0.12)Mn_(0.05)O_(2) cathode material is synthesized and modified by a dual-substitution strategy in which the high-valence doping element improves the structural stability by forming strong metal–oxygen binding forces,while the low-valence doping element eliminates high Li^(+)/Ni^(2+)*** a result,this synergistic dual substitution can effectively suppress H2-H3 phase transition and generation of microcracks,thereby ultimately improving the thermodynamic stability of Ni-rich cathode ***,the dual-doped Ni-rich cathode delivers an extremely high capacity retention of 81%after 250 cycles(***/Li+)in coin-type half cells and 87%after 1000 cycles(***/Li^(+))in pouch-type full cells at a high temperature of 55℃.More impressively,the dual-doped sample exhibits excellent thermal stability,which demonstrates a higher thermal runaway temperature and a lower calorific *** synergetic effects of this dual-substitution strategy pave a new pathway for addressing the critical challenges of Ni-rich cathode at high temperatures,which will significantly advance the high-energy-density and high-safety cathodes to the subsequent commercialization.

关键词： Ni-rich cathode Single crystalline Dual-substitution strategy High-temperature cathode Li-ion batteries

太湖地区侧渗水稻土连续施磷处理下稻田磷的径流损失

在线全文

学校读者我要写书评

暂无评论

农村生态环境 2005年第3期21卷 29-33页

作者：赵建宁沈其荣冉炜南京农业大学资源与环境科学学院江苏南京210095

太湖地区侧渗水稻土稻田磷素动态特征及其潜在环境效应的田间测试结果表明,水稻地上部收获带走的磷量平均为47.5kg·hm-2;土壤表层0—10cm富集的磷、整个稻季径流流失的溶解态磷、颗粒态磷和总磷与施磷量呈线性相关关系。水稻生长季由... 详细信息

太湖地区侧渗水稻土稻田磷素动态特征及其潜在环境效应的田间测试结果表明,水稻地上部收获带走的磷量平均为47.5kg·hm-2;土壤表层0—10cm富集的磷、整个稻季径流流失的溶解态磷、颗粒态磷和总磷与施磷量呈线性相关关系。水稻生长季由径流损失的总磷量约在1.3～5.1kg·hm-2,损失量随施磷量的增加而增加。过量施肥会增加磷素径流流失风险,在当地施磷量30kg·hm-2条件下,水田磷素流失量相对很小。太湖地区侧渗水稻土稻季建议施磷量为50kg·hm-2。

关键词：径流田面水总磷溶解态磷颗粒态磷

在线全文

学校读者我要写书评

暂无评论

废弃鸡毛化学降解工艺研究

农村生态环境 2005年第2期21卷 77-80页

作者：穆杰徐阳春沈其荣南京农业大学资源与环境科学学院江苏南京210095

研究了酸、碱条件下不同化学药品对鸡毛降解的影响,从而筛选出有效的助剂以提高复合氨基酸的产率;并在水解温度恒定、水解剂硫酸3mol·L-1或氢氧化钾6mol·L-1及常压条件下,采用正交试验研究了固液比、助剂用量、水解时间对水解率的影... 详细信息

研究了酸、碱条件下不同化学药品对鸡毛降解的影响,从而筛选出有效的助剂以提高复合氨基酸的产率;并在水解温度恒定、水解剂硫酸3mol·L-1或氢氧化钾6mol·L-1及常压条件下,采用正交试验研究了固液比、助剂用量、水解时间对水解率的影响。结果表明:酸、碱处理条件下不同处理间差异显著,酸处理条件下以金属盐作用效果最好,增产率18. 0%;碱处理条件下以硫化钠作用效果最好,增产率达39. 8%。在水解温度115~120℃及常压条件下,水解剂为3mol·L-1硫酸处理的最佳水解工艺为固液比1∶3、助剂用量120g·kg-1、水解时间10h; 6mol·L-1氢氧化钾作为水解剂时的最佳水解工艺为固液比1∶3、助剂用量120g·kg-1、水解时间12h。

关键词：鸡毛水解化学降解复合氨基酸

Role of alloying and heat treatment on microstructure and mechanical properties of cast Al-Li alloys:A review

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第5期21卷 445-460页

作者： Guo-hua Wu You-jie Guo Fang-zhou qi shen Zhang Yi-xiao Wang Xin Tong Liang Zhang School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Due to the prominent advantages of low density,high elastic modulus,high specific strength and specific stiffness,cast Al-Li alloys are suitable metallic materials for manufacturing complex large-sized components and are ideal structural materials for aerospace,defense and military *** the basis of the microstructural characteristics of cast Al-Li alloys,exploring the role of alloying and micro-alloying can stabilize their dominant position and further expand their application *** this review,the development progress of cast Al-Li alloys was summarized *** to the latest research highlights,the influence of alloying and heat treatment on the microstructure and mechanical properties was systematically *** potential methods to improve the alloy performance were *** response to the practical engineering requirements of cast Al-Li alloys,the scientific challenges and future research directions were discussed and prospected.

关键词： cast Al-Li alloy alloying microstructure mechanical properties heat treatment