检索结果-南通市图书馆

One-step synthesis of Cu(Ⅱ) metal–organic gel as recyclable material for rapid, efficient and size selective cationic dyes adsorption

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2019年第12期31卷 203-212页

作者： Qing Wu Li He zhong wei jiang Yang Li Ting Ting Zhao Yu Han Li Cheng Zhi Huang Yuan Fang Li Key Laboratory of Luminescent and Real-Time Analytical Chemistry(Southwest University) Ministry of EducationSchool of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China College of Pharmaceutical Science Soiithiuest UniuersityChongqing 400715China College of Science Beihua UniversityJilin 132013China

Efficient removal of non-biodegradable and hazardous dyes from wastewater remains a hot research ***,a rationally designed a Cu(Ⅱ)-based metal–organic gel(Cu-MOG)with a nanoporous 3 D network structure prepared via a simple one-step mixing method was successfully employed for the removal of cationic *** Cu-MOG exhibited high efficiency,with an adsorption capacity of up to 650.32 mg/g,and rapid adsorption efficiency,with the ability to adsorb 80%of Neutral Red within 1 *** high adsorption efficiency was attributed to its large specific surface area,which enabled it to massively bind cationic dyes through electrostatic interaction,and a nanoporous structure that promoted intra-pore ***,the Cu-MOG displayed size-selective adsorption,based on adsorption studies concerning dyes of different sizes as calculated by density functional ***,the adsorption performance of the Cu-MOG still maintained removal efficiency of 100%after three regeneration *** results suggested that the Cu-MOG could be expected to be a promising and competitive candidate to conveniently process wastewater.

关键词： Cu(Ⅱ)-based metal–organic gel Electrostatic interaction Intraporous diffusion Dyes removal Size selective

Study of the pulsed working characteristics of the penning ion source for neutron tubes

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2000年第3期11卷 150-154页

作者： LU Hong-Bo, YUE Cheng-Bo, LI Wen-Sheng, ZHAI wei-Dong, jiang zhong-Jing, wei Bao-Jie (Department of Physis, the Northeast Normal University, Changchun 130024) 西北师范大学甘肃长春 130024

The pulsed working characteristics of the neutron tube ion source were studied experimentally. The principle and method of selecting the gas pressure and anode voltage were determined.

关键词：加速器离子源中子管脉冲宽度阳极电压实验研究

GATIS score for predicting the prognosis of rectal neuroendocrine neoplasms:A Chinese multicenter study of 12-year experience

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第28期30卷 3403-3417页

作者： Xin-Yu Zeng Ming zhong Guo-Le Lin Cheng-Guo Li wei-zhong jiang wei Zhang Li-Jian Xia Mao-Jun Di Hong-Xue Wu Xiao-Feng Liao Yue-Ming Sun Min-Hao Yu Kai-Xiong Tao Yong Li Rui Zhang Peng Zhang Department of Gastrointestinal Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430074Hubei ProvinceChina Department of Gastrointestinal Surgery Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Department of General Surgery Peking Union Medical College HospitalPeking Union Medical CollegeBeijing 100730China Department of Colorectal Surgery Fujian Medical UniversityFuzhou 350401Fujian ProvinceChina Department of Colorectal Surgery Changhai HospitalShanghai 200433China Department of Gastrointestinal Surgery The First Affiliated Hospital of Shandong First Medical UniversityJinan 250118Shandong ProvinceChina Department of Gastrointestinal Surgery Taihe HospitalHubei University of MedicineShiyan 442099Hubei ProvinceChina Department of Gastrointestinal Surgery I Section Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina Department of General Surgery Xiangyang Central HospitalAffiliated Hospital of Hubei University of Arts and ScienceXiangyang 441021Hubei ProvinceChina Department of Colorectal Surgery Jiangsu Province HospitalNanjing Medical UniversityNanjing 210029Jiangsu ProvinceChina Department of Gastrointestinal Surgery School of MedicineShanghai Jiao Tong UniversityShanghai 200127China Department of General Surgery Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080Guangdong ProvinceChina Department of Colorectal Surgery Liaoning Cancer HospitalShenyang 110042Liaoning ProvinceChina

BACKGROUND There is currently a shortage of accurate,efficient,and precise predictive instruments for rectal neuroendocrine neoplasms(NENs).AIM To develop a predictive model for individuals with rectal NENs(R-NENs)using data from a large *** Data from patients with primary R-NENs were retrospectively collected from 17 large-scale referral medical centers in *** forest and Cox proportional hazard models were used to identify the risk factors for overall survival and progression-free survival,and two nomograms were *** A total of 1408 patients with R-NENs were *** grade,T stage,tumor size,age,and a prognostic nutritional index were important risk factors for *** GATIS score was calculated based on these five *** overall survival prediction,the respective C-indexes in the training set were 0.915(95%confidence interval:0.866-0.964)for overall survival prediction and 0.908(95%confidence interval:0.872-0.944)for progression-free survival *** to decision curve analysis,net benefit of the GATIS score was higher than that of a single *** time-dependent area under the receiver operating characteristic curve showed that the predictive power of the GATIS score was higher than that of the TNM stage and pathological grade at all time *** The GATIS score had a good predictive effect on the prognosis of patients with R-NENs,with efficacy superior to that of the World Health Organization grade and TNM stage.

关键词： Rectal neuroendocrine neoplasm Nomogram Random forest Prognosis Overall survival Progression-free survival

男性垂体泌乳素瘤经鼻蝶手术治疗对血清睾酮的影响

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

生殖与避孕 2007年第6期27卷 414-416,429页

作者：蒋为众黄中檀书斌复旦大学附属上海市第五人民医院神经外科上海200240

目的:研究男性垂体泌乳素瘤患者经鼻蝶手术对血清睾酮的影响。方法:回顾性分析显微手术治疗的男性垂体泌乳素瘤15例,对手术前后血清泌乳素(PRL)和睾酮(T)进行测定及性功能随访。结果:11例手术全切肿瘤患者的术后血清RRL水平较术前明显下... 详细信息

目的:研究男性垂体泌乳素瘤患者经鼻蝶手术对血清睾酮的影响。方法:回顾性分析显微手术治疗的男性垂体泌乳素瘤15例,对手术前后血清泌乳素(PRL)和睾酮(T)进行测定及性功能随访。结果:11例手术全切肿瘤患者的术后血清RRL水平较术前明显下降;血清T在术后1个月明显上升。10例性功能障碍患者有6例改善。但是另外4例由于肿瘤呈侵袭性生长或特别巨大,无法手术全切,术后辅助药物治疗,血清T水平在术后6个月仍无法达到正常水平。结论:经蝶显微手术切除肿瘤或手术辅助药物治疗,有助于提高术后血清T水平。术后PRL水平、肿瘤的生长方式和手术切除程度是影响此类患者术后性功能恢复的主要因素。

关键词：垂体肿瘤泌乳素腺瘤血清睾酮

在线全文

学校读者我要写书评

暂无评论

我国高校扩招后办学效率和生产率的变化

统计研究 2017年第1期34卷 91-101页

作者：钟卫姜万军中国人民大学公共管理学院北京大学光华管理学院北京大学西安分院

高校扩招时期我国高等教育的快速发展是否属于"粗放型"?高校办学规模减速后是否逐步走上了内涵式发展道路?本文以教育部直属高校为分析对象,采用DEA-Malmquist指数分析并回答这两个问题。研究发现,高校扩招至2006年之前,教育部直属高校... 详细信息

高校扩招时期我国高等教育的快速发展是否属于"粗放型"?高校办学规模减速后是否逐步走上了内涵式发展道路?本文以教育部直属高校为分析对象,采用DEA-Malmquist指数分析并回答这两个问题。研究发现,高校扩招至2006年之前,教育部直属高校的快速发展属于有质量的增长,这一时期全要素生产率的大幅提升与技术进步和技术效率改善都有关系,但技术进步的贡献更大。2006年之后,由于技术进步的促进作用逐步消失,以及追赶效应的"自然衰老",生产率的增长出现明显的放缓。但是,如果考虑有质量的产出,2006年后技术效率的下降幅度并不明显,这在一定程度上验证了内涵式发展目标的成效。

关键词：高等教育高校扩招内涵式发展 Malmquist指数

Microstructure Evolution and Mechanism of Strength Development of Fly Ash Paste

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 152-163页

作者： MA Shuzhao WU Shunchuan HUANG Mingqing CHENG Haiyong jiang Guanzhao NIU Yonghui LIU Zemin SUN wei Faculty of Land Resources Engineering Kunming University of Science and TechnologyKunming 650093China Zijin School of Ge-ology and Mining Fuzhou UniversityFuzhou 350108China

Three types of activators such as sodium hydroxide,calcium oxide and triethanolamine(TEA)are used to establish different activation environments to address the problems associated with the process of activating fly ash *** conducted mechanical tests and numerical simulations to understand the evolution of microstructure,and used environmental scanning electron microscopy(ESEM)and energy dispersive spectroscopy(EDS)techniques to analyze the microenvironments of the *** mechanical properties of fly ash paste under different activation conditions and the changes in the microstructure and composition were *** results revealed that under conditions of low NaOH content(1%-3%),the strength of the sample increased *** the content exceeded 4%,the rate of increase in strength *** on the results,the optimal NaOH content was identified,which was about 4%.A good activation effect,especially for short-term activation(3-7 d),was achieved using TEA under high doping *** activation effect was poor for long-term strength after 28 *** CaO content did not significantly affect the degree of activation *** maximum effect was exerted when the content of CaO was 2%.The virtual cement and concrete testing laboratory(VCCTL)was used to simulate the hydration process,and the results revealed that the use of the three types of activators accelerated the formation of Ca(OH)_(2) in the *** activators also corroded the surface of the fly ash particles,resulting in a pozzolanic *** active substances in fly ash were released efficiently,and hydration was *** pores were filled with hydration products,and the microstructure changed to form a new frame of paste filling that helped improve the strength of fly ash paste.

关键词： paste filling fly ash activator unconfined compressive strength microstructure hydration simulation

育龄女性垂体泌乳素微腺瘤手术前后内分泌改变及疗效分析

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

生殖与避孕 2006年第4期26卷 218-221页

作者：蒋为众李士其黄中檀书斌卢政荣周良复旦大学附属上海市第五人民医院神经外科上海200240 复旦大学附属华山医院神经外科上海200040

目的:探讨育龄女性中垂体泌乳素微腺瘤患者微创手术治疗的疗效。方法:回顾性分析显微手术治疗的育龄女性垂体泌乳素微腺瘤24例,对手术前后内分泌改变及疗效进行分析。结果:本组24例全部手术全切除肿瘤,术后复查血清PRL,下降至正常水平2... 详细信息

目的:探讨育龄女性中垂体泌乳素微腺瘤患者微创手术治疗的疗效。方法:回顾性分析显微手术治疗的育龄女性垂体泌乳素微腺瘤24例,对手术前后内分泌改变及疗效进行分析。结果:本组24例全部手术全切除肿瘤,术后复查血清PRL,下降至正常水平23例。术后当月月经恢复正常6例;术后6月月经恢复正常18例。其中1例术后d3恢复月经,且术后3个月经B超查证实怀孕。13例溢乳患者均于治疗后2-16周内停止溢乳。结论:显微手术切除可作为育龄女性中症状性垂体泌乳素微腺瘤的首选治疗方法。

关键词：垂体肿瘤催乳素显微手术

Acute and chronic excitotoxicity in ischemic stroke and late-onset Alzheimer's disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 1981-1988页

作者： Shan Ping Yu Emily Choi Michael Qjiang Ling wei Department of Anesthesiology Emory University School of MedicineAtlantaGAUSA Center for Visual and Neurocognitive Rehabilitation Atlanta Veterans Affairs Medical CenterDecaturGAUSA

Stroke and Alzheimer's disease are common neurological disorders and often occur in the same *** comorbidity of the two neurological disorders represents a grave health threat to older *** review presents a brief background of the development of novel concepts and their clinical *** activity of glutamatergic N-methyl-D-aspartate receptors and N-methyl-D-aspartate receptor-mediated Ca^(2+)influx is critical for neuronal *** ischemic insult induces prompt and excessive glutamate release and drastic increases of intracellular Ca^(2+)mainly via N-methyl-D-aspartate receptors,particularly of those at the extrasynaptic *** Ca^(2+)-evoked neuronal cell death in the ischemic core is dominated by necrosis within a few hours and days known as acute ***,mild but sustained Ca^(2+)increases under neurodegenerative conditions such as in the distant penumbra of the ischemic brain and early stages of Alzheimer's disease are not immediately toxic,but gradually set off deteriorating Ca^(2+)-dependent signals and neuronal cell loss mostly because of activation of programmed cell death *** on the Ca^(2+)hypothesis of Alzheimer's disease and recent advances,this Ca^(2+)-activated“silent”degenerative excitotoxicity evolves from years to decades and is recognized as a unique slow and chronic *** N-methyl-D-aspartate receptor subunit GluN3A,primarily at the extrasynaptic site,serves as a gatekeeper for the N-methyl-D-aspartate receptor activity and is neuroprotective against both acute and chronic *** stroke and Alzheimer's disease,therefore,share an N-methyl-D-aspartate receptor-and Ca^(2+)-mediated mechanism,although with much different time *** is thus proposed that early interventions to control Ca^(2+)homeostasis at the preclinical stage are pivotal for individuals who are susceptible to sporadic late-onset Alzheimer's disease and Alzheimer's disease-related

关键词： Ca^(2+)hypothesis cognitive deficits hyperactivity late-onset Alzheimer's disease neurodegeneration N-methyl-D-aspartate receptors N-methyl-D-aspartate receptor subunits pathogenesis preventive treatment

Metal nanoparticles decorated CoFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 26-38页

作者： Xiaodong Yang Haochen Shen Xiaoming Xiao Zhichao Li Qi Zhou wei Yang Bin jiang Yongli Sun Luhong Zhang Zhenhua Yan School of Chemical Engineering and Technology Tianjin University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides （M/SLDH） through spontaneous redox and sulfurization *** developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction （OER） and hydrogen evolution reaction （HER） performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm-2in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm-2and exhibited high structural robustness,maintaining stability at 1000 mA cm-2for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy （UPS） and density functional theory （DFT） analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： Ultraviolet photoelectron spectroscopy