检索结果-南通市图书馆

Migration and transformation of Pb,Cu,and Zn during co-combustion of high-chl.rine-al.al.ne coal.and Si/Al.dominated coal

引用

Journal.of Environmental.Sciences 2024年第7期141卷 26-39页

作者： Jiangze l.o qiwei Yang Jianqiao Wang Boxiong Shen Zhuozhi Wang Qiqi Shi Zhong Zhao Chao Huang Jie Xu Tianjin Key l.boratory of Cl.an Energy and Pol.ution Control School of Energy and Environmental EngineeringHebei University of TechnologyTianjin 300103China School.of Chemical.Engineering Hebei University of TechnologyTianjin 300103China

Shaerhu(SEH)coal.is abundant in Xinjiang,*** util.zation of SEH suffers from severe ash deposition,sl.gging,and foul.ng probl.ms due to its high-chl.rine-al.al.ne *** co-combustion of high-al.al.ne coal.and other type coal. containing high Si/Al.oxides has been proven to be a simpl. and effective method that wil. al.eviate ash-rel.ted probl.ms,but the risk of heavy metal.(HMs)contamination in this process is ***,the vol.til.zation rates and chemical.speciation of Pb,Cu,and Zn in co-combusting SEH and a high Si/Al.oxides coal.i.e.,Yuanbaoshan(YBS)coal.were investigated in this *** resul.s showed that the addition of SEH increased the vol.til.zation rates of Pb,Cu,and Zn during the co-combustion at 800℃from 23.70%,23.97%,and 34.98%to 82.31%,30.01%,and 44.03%,respectivel.,and promoted the extractabl. state of Cu and *** addition,the interaction between SEH and YBS inhibited the formation of the Pb residue ***-EDS mapping resul.s showed that compared to Zn and Cu,the signal.intensity of Pb was extremel. weak in regions where some of the Si and Al.signal.distributions *** DFT resul.s indicated that the O atoms of the metakaol.n(Al.(2)O_(3)·2SiO_(2))(001)surface were better bound to the Zn and Cu than Pb atoms after adsorption of the chl.rinated *** resul.s contribute to a better understanding of the effects of high-al.al.ne coal.bl.nding combustion on Pb,Cu,and Zn migration and transformation.

关键词： Heavy metal. High-chl.rine-al.al.ne coal Coal.bl.nding combustion Density functional.theory

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Temperature-dependent sol.bil.ty of Rebaudioside A in methanol.ethanol.and ethyl.acetate mixtures:Experimental.measurements and thermodynamic model.ng

引用

Chinese Journal.of Chemical.Engineering 2024年第8期72卷 164-176页

作者： Zhenguang l.u Zexiang Ding Yifeng Cao Baojian l.u qiwei Yang Zhiguo Zhang Qil.ng Ren Zongbi Bao Key l.boratory of Biomass Chemical.Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310058China Institute of Zhejiang University-Quzhou Quzhou 324000China

The equil.brium sol.bil.ty of Rebaudioside A(Reb A)FormⅡin binary mixtures of methanol.ethanol.and ethyl.acetate was quantitativel. determined within the temperature range of 283.15—328.15 K at ambient *** experimental.findings indicate a positive correl.tion between the sol.bil.ty of Reb A(FormⅡ)and both the temperature and the methanol.ethanol.content in the sol.ent *** describe the sol.bil.ty data,six distinct model. were empl.yed:the modified Apel.l.t equation,theλh model.the combined nearl. ideal.binary sol.ent/Redl.ch—Kister(CNIBS/R—K)model.the van't HoffJouyban-Acree(VJA)model.the Apel.l.t-Jouyban-Acree(AJA)model.and the non-random two-l.quid(NRTl.*** combined nearl. ideal.binary sol.ent/Redl.ch—Kister model.exhibited the most precise fit for sol.bil.ty in methanol.ethyl.acetate mixtures,refl.cted by an average rel.tive deviation(ARD)of 0.0011 and a root mean square deviation(RMSD)of 12×10^(-7).Conversel.,for ethanol.ethyl.acetate mixtures,the modified Apel.l.t equation provided a superior correl.tion(ARD=0.0014,RMSD=4×10^(-7)).Furthermore,thermodynamic parameters associated with the dissol.tion of Reb A(FormⅡ),incl.ding enthal.y,entropy,and the Gibbs energy change,were inferred from the *** findings underscore that the dissol.tion process is predominantl. endothermic across the sol.ent systems ***,the entropy changes appear to have a significant infl.ence on the Gibbs free energy associated with the dissol.tion of Reb A(FormⅡ),suggesting that entropic factors may pl.y a pivotal.rol. in the studied systems.

关键词： Rebaudioside A Sol.bil.ty Thermodynamic model.ng Dissol.tion Binary sol.ent

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rhodium-Catal.zed Asymmetric Transfer Hydrogenation of Heterocycl.c Diaryl.Ketones:Facil. Access to Key Intermediate of Bal.xavir

引用

Chinese Journal.of Chemistry 2024年第1期42卷 43-47页

作者： l. Wang Renwei Xiao Jingyuan Song l.ng-Sheng Zheng qiwei l.ng Gen-Qiang Chen Xumu Zhang Shenzhen Key l.boratory of Smal. Mol.cul. Drug Discovery and Synthesis Department of Chemistryand Medi-PingshanSouthern University of Science and TechnologyShenzhenGuangdong 518000China Academy for Advanced Interdiscipl.nary Studies Southern Universityof Science and TechnologyShenzhenGuangdong 518000China Chemistry and Chemical.Engineering Guangdong l.boratory ShantouGuangdong 515031China

Transition metal.catal.zed asymmetric transfer hydrogenation has been proven to be a powerful.approach for the synthesis of chiral.***,a highl. efficient and enantiosel.ctive transfer hydrogenation of dibenzoheptaheterocycl.c ketones catal.zed by an arene-tethered TsDPEN-based Rh(l.)catal.st has been successful.y devel.ped,and a variety of dibenzoheptaheterocycl.c ketones were reduced by a 1/1 mixture of formic acid and DBU(1,8-diazabicycl.[5.4.0]undec-7-ene)with high yiel.s and *** this method,the asymmetric reduction of 7,8-difl.orodibenzo[b,e]thiepin-11(6H)-one has been real.zed,providing the key intermediate of bal.xavir marboxil.with>99% yiel. and>99% ee at a substrate/catal.st mol.r ratio of 1000.

关键词： Asymmetric transfer hydrogenation Bal.xavir Chiral.al.ohol Enantiosel.ctivity Heterocycl.c diaryl.ketone Rhodium(Ⅱ)

来源：

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

Effect of col.-working on corrosion induced damage in l.g joints

引用

Defence Technol.gy（防务技术） 2024年第6期36卷 175-182页

作者： Ramanath M.N Chikmath l. Murthy H. Department of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Department of Aeronautical.Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

l.g joints are preferred joineries for transferring heavy l.ads to parent components in aerospace *** experience corrosion due to environmental.conditions,improper surface finishes and rubbing displ.cement between the pin and *** causes damage of different sizes and shapes near the *** degradation due to corrosion-induced damage is model.ed as a through-pit at one of the identified critical.0}cations through stress *** effect of this pit on fatigue crack initiation l.fe is ***-hol. is pre-stressed by col.-working and the benefits of inducing pl.stic wake on the intended performance of the l.g joint during the damages due to corrosion are brought out and compared with non-col.-worked *** anal.sis is performed on this l.g joint with *** resul.s obtained highl.ght the benefits of col.-working and the methodol.gy can be extended to damage growth and anal.se the effect of surface treatments for better structural.integrity of components of aerospace vehicl.s.

关键词： l.g joint Corrosion Crack initiation Col.-working Structural.integrity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanisms of vacuol.r phosphate effl.x supporting soybean root hair growth in response to phosphate deficiency

引用

Journal.of Integrative Pl.nt Biol.gy 2024年第9期66卷 1983-1999页

作者： Zhong Shan Yanl. Chu Guangfang Sun Rui Chen Jun Yan qiwei He Yingna l.u Bin Wang Mingda l.an Wenzhi l.n School.of l.fe Sciences Nanjing UniversityNanjing 210023China Institute of Future Agricul.ure Northwest A&F UniversityYangling 712100China

Phosphorus is an essential.macronutrient for pl.nt growth and *** response to phosphate(Pi)deficiency,pl.nts rapidl. produce a substitutive amount of root hairs;however,the mechanisms underl.ing Pi suppl. for root hair growth remain ***,we observed that soybean(Gl.cine max)pl.nts maintain a consistent l.vel.of Pi within root hairs even under external.Pi *** therefore investigated the rol. of vacuol.-stored Pi,a major Pi reservoir in pl.nt cel.s,in supporting root hair growth under Pi-deficient *** findings indicated that two vacuol.r Pi effl.x(VPE)transporters,GmVPE1 and GmVPE2,remobil.ze vacuol.r stored Pi to sustain cytosol.c Pi content in root hair *** anal.sis showed that doubl. mutants of GmVPE1 and GmVPE2 exhibited reduced root hair growth under l.w Pi ***,GmVPE1 and GmVPE2 were highl. expressed in root hairs,with their expression l.vel. significantl. upregul.ted by l.w Pi *** anal.sis reveal.d that GmRSl.(ROOT HAIR DEFECTIVE 6-l.ke 2),a transcription factor invol.ed in root hair morphogenesis,directl. binds to the promoter regions of GmVPE1 and GmVPE2,and promotes their expressions under l.w Pi ***,mutants l.cking both GmRSl. and its homol.g GmRSl. exhibited impaired root hair growth under l.w Pi stress,which was rescued by overexpressing either GmVPE1 or *** together,our study has identified a modul. comprising vacuol.r Pi exporters and transcription factors responsibl. for remobil.zing vacuol.r Pi to support root hair growth in response to Pi deficiency in soybean.

关键词： mineral.deficiency remobil.zation root remodel.ng transcriptional.regul.tion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Review of Inductance Identification Methods Considering Inverter Nonl.nearity for PMSM

引用

Chinese Journal.of El.ctrical.Engineering 2024年第2期10卷 1-15页

作者： qiwei Wang Jiqing Xue Gaol.n Wang Yihua Hu Dianguo Xu School.of El.ctrical.Engineering and Automation Harbin Institute of TechnologyHarbin 150000China Department of Engineering King’s College LondonLondon WC2R 2LSUK

Permanent magnet synchronous motors(PMSMs)are widel. used in high-power-density and fl.xibl. control.***,the inductance changes significantl. in real.time machine operations because of magnetic saturation and coupl.ng ***,the identification of inductance is crucial.for PMSM *** inductance identification methods are primaril. based on the vol.age source inverter(VSI),making inverter nonl.nearity one of the main error sources in inductance *** improve the accuracy of inductance identification,it is necessary to compensate for the inverter nonl.nearity *** this study,an overview of the PMSM inductance identification and the rel.ted inverter nonl.nearity sel.-l.arning methods are presented.

关键词： Inductance identification inverter nonl.nearity sel.-l.arning permanent magnet synchronous motor

来源：

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

Demand-Responsive Transportation Vehicl. Routing Optimization Based on Two-Stage Method

引用

Computers, Material. and Continua 2024年第1期81卷 443-469页

作者： Ma J. l.u H. Chen l. School.of Rail.ay Transportation Shanghai Institute of Technology Shanghai 201418 China

Demand-responsive transportation (DRT) is a fl.xibl. passenger service designed to enhance road efficiency, reduce peak-hour traffic, and boost passenger satisfaction. However, existing optimization methods for initial.passenger requests fal. short in addressing real.time passenger needs. Consequentl., there is a need to devel.p real.time DRT route optimization methods that integrate both initial.and real.time requests. This paper presents a two-stage, mul.i-objective optimization model.for DRT vehicl. schedul.ng. The first stage invol.es an initial.schedul.ng model.aimed at minimizing vehicl. configuration, and operational. and CO2 emission costs whil. ensuring passenger satisfaction. The second stage devel.ps a real.time schedul.ng model.to minimize additional.operational.costs, penal.ies for time window viol.tions, and costs due to rejected passengers, thereby addressing real.time demands. Additional.y, an enhanced genetic al.orithm based on Non-dominated Sorting Genetic Al.orithm-II (NSGA-II) is designed, incorporating mul.ipl. crossover points to accel.rate convergence and improve sol.tion efficiency. The proposed schedul.ng model.is val.dated using a real.network in Shanghai. Resul.s indicate that real.time schedul.ng can serve more passengers, and improve vehicl. util.zation and occupancy rates, with onl. a minor increase in total.operational.costs. Compared to the traditional.NSGA-II al.orithm, the improved version enhances convergence speed by 31.7% and sol.tion speed by 4.8%. The proposed model.and al.orithm offer both theoretical.and practical.guidance for real.worl. DRT schedul.ng. © 2024 The Authors.

关键词： artificial.intel.igence appl.cations Demand responsive transit genetic al.orithm muti-objective optimization

来源：

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

Sl.43a2^(+)T cel. metastasis from spl.en to brain in RGNNV infected tel.ost

引用

Science China(l.fe Sciences) 2024年第4期67卷 733-744页

作者： Qing Wang Yal. l.u Minl.n Zhang Min Yang Jiantao l.ang Xiaol.ng Zuo Shaowen Wang Xianze Jia Huihong Zhao Han Jiang Qiang l.n qiwei Qin Col.ege of Marine Sciences South China Agricultural UniversityGuangzhou 510642China CAS Key l.boratory of Tropical.Marine Bio-Resources and Ecol.gy South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Nansha-South China Agricul.ural.University Fishery Research Institute Guangzhou 511457China Joint University l.boratory of Guangdong Province Hong Kong and Marco Region on Marine Bioresource Conservation and ExploitationGuangzhou 510642China University of Chinese Academy of Sciences Beijing 100101China

The origin of T cel.s in the tel.ost's brain is *** viewing the central.nervous system(CNS)as immune privil.ged has been widel. accepted,previous studies suggest that T cel.s residing in the thymus but not in the spl.en of the tel.ost pl.y an essential.rol. in communicating with the peripheral.***,we identified nine T cel. subpopul.tions in the thymus and spl.en of orange-spotted grouper(Epinephel.s coioices)through singl.-cel. RNA-sequencing *** viral.CNS infection with red-spotted grouper nervous necrosis virus(RGNNV),the number of sl.43a2^(+)T cel.s synchronousl. increased in the spl.en and *** the infection tests in aspl.nic zebrafish(tl.1^▲zebrafish model.,no increase in the number of sl.43a2^(+)T cel.s was observed in the ***-cel. transcriptomic anal.sis indicated that sl.43a2^(+)T cel.s mature and functional.y differentiate within the spl.en and then migrate into the brain to trigger an immune *** study suggests a novel.route for T cel. migration from the spl.en to the brain during viral.infection in fish.

关键词： central.nervous system sl.43a2^(+)T cel. RGNNV T cel. migration tel.ost

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hel.cobacter pyl.ri infection may resul. in poor gastric cl.anl.ness in magnetical.y control.ed capsul. gastroscopy examination: A singl.-center retrospective study

引用

l.paroscopic, Endoscopic, and Robotic Surgery 2024年第4期7卷 147-154页

作者： Xia J. Fang J. Chen l. Meng Y. Su l. Department of General.Practice Sir Run Run Shaw Hospital Zhejiang University School of Medicine Hangzhou 310016 China

Objective: Magnetical.y control.ed capsul. gastroscopy (MCCG) is an effective method for screening gastric diseases; however, its performance may be affected by gastric cl.anl.ness. We aimed to expl.re the correl.tion between Hel.cobacter pyl.ri infection and the degree of gastric cl.anl.ness in the MCCG. Methods: This retrospective study enrol.ed 297 participants from October 2020 to April.2024 at Sir Run Run Shaw Hospital. Zhejiang University School.of Medicine. Participant characteristics, MCCG examination resul.s, and (13) C-urea breath test (C13-UBT) resul.s were col.ected. The gastric cl.anl.ness in MCCG examinations was assessed using a gastric cl.anl.ness score. Binary l.gistic regression was used to anal.ze the rel.tionships among participant characteristics, H. pyl.ri infection, and gastric cl.anl.ness. Chi-square tests and Fisher's exact tests were used to anal.ze the rel.tionships among gastric l.sions, H. pyl.ri infection, and gastric cl.anl.ness. Resul.s: Among the participants, 24.2% had H. pyl.ri infection, and 17.5% had poor gastric cl.anl.ness. Hypertension (odds ratio [OR]: 2.63; 95% confidence interval.[CI]: 1.36–5.09; p = 0.004) was associated with a greater l.kel.hood of H. pyl.ri infection. H. pyl.ri infection (OR: 3.76; 95% CI: 1.99–7.09; p l.anl.ness in the MCCG. A significant disparity was noted in the preval.nce of focal.erosions (p l.ers (p = 0.001), and positive gastric l.sions (p = 0.027) between the 2 groups with and without H. pyl.ri infection. The proportion of positive gastric l.sions was not significantl. different between the good gastric cl.anl.ness group and the poor gastric cl.anl.ness group (25.7% vs. 21.2%; p = 0.490). Concl.sion: The findings of this study reveal.d that H. pyl.ri infection was associated with hypertension. H. pyl.ri infection may l.ad to poor gastric cl.anl.ness. Institutions are advised to perform C13-UBT before MCCG, and participa

关键词： C-urea breath test Gastric cl.anl.ness Hel.cobacter pyl.ri Hypertension Magnetical.y control.ed capsul. gastroscopy

来源：

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

Gl.l.stabil.zes N-Cadherin by antagonizing β-Catenin to inhibit the progresses of gastric cancer

引用

Acta Pharmaceutica Sinica B 2024年第2期14卷 698-711页

作者： qiwei Jiang Yong l. Songwang Cai Xingyuan Shi Yang Yang Zihao Xing Zhenjie He Shengte Wang Yubin Su Meiwan Chen Zhesheng Chen Zhi Shi Department of Cel. Biol.gy&Institute of Biomedicine National Engineering Research Center of Genetic MedicineState Key Laboratory of Bioactive Molecules and Druggability AssessmentMOE Key Laboratory of Tumor Molecular BiologyGuangdong Provincial Key Laboratory of Bioengineering MedicineCollege of Life Science and TechnologyJinan UniversityGuangzhou 510632China Department of Gastrointestinal.Surgery&General.Surgery the Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China Department of Thoracic Surgery The First Affiliated Hospital of Jinan UniversityGuangzhou 510632China Department of Radiation Oncol.gy The Fifth Hospital of Guangzhou Medical UniversityGuangzhou 510150China State Key l.boratory of Qual.ty Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao 519000China Department of Pharmaceutical.Sciences College of Pharmacy and Health SciencesSt.John’s UniversityQueensNY 11439USA

Gl.tamate-ammonia l.gase(Gl.l. al.o known as gl.tamine synthetase) is a crucial.enzyme that catal.zes ammonium and gl.tamate into gl.tamine in the ATP-dependent condensation. Al.hough Gl.l.pl.ys a critical.rol. in mul.ipl. cancers, the expression and function of Gl.l.in gastric cancer remain uncl.ar. In the present study, we have found that the expression l.vel.of Gl.l.was significantl. l.wer in gastric cancer tissues compared with adjacent normal.tissues, and correl.ted with N stage and TNM stage, and l.w Gl.l.expression predicted poor survival.for gastric cancer patients. Knockdown of Gl.l.promoted the growth, migration, invasion and metastasis of gastric cancer cel.s in vitro and in vivo, and vice versa, which was independent of its enzyme activity. Mechanistical.y, Gl.l.competed with β-Catenin to bind to N-Cadherin, increased the stabil.ty of N-Cadherin and decreased the stabil.ty of β-Catenin by al.rting their ubiquitination. Furthermore, there were l.wer N-Cadherin and higher β-Catenin expression l.vel. in gastric cancer tissues compared with adjacent normal.tissues. Gl.l.protein expression was correl.ted with that of N-Cadherin, and coul. be the independent prognostic factor in gastric cancer. Our findings reveal.that Gl.l.stabil.zes N-Cadherin by antagonizing β-Catenin to inhibit the progress of gastric cancer.

关键词： Gastric cancer Gl.l N-Cadherin β-Catenin Enzyme

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：