检索结果-南通市图书馆

Frontiers of Chemical Science and Engineering 2018年第3期12卷 467-472页

作者： Yuyao Ji Min Ma Xuqiang Ji xiaoli xiong Xuping Sun College of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 China College of Chemistry Sichuan University Chengdu 610064 China Key Lab of Process Analysis and Cont ol of Sichuan Universities Yibin University Yibin 644000 China

It is highly attractive but still remains a great challenge to develop an efficient electrocatalyst for oxygen evolution reaction under nearly neutral conditions. In this work, we report the transformation of Ni3S2 nanowire array on nickel foam into the amorphous nickel carbonate nanowire array on nickel foam （NiCO3/NF）. The resulting NiCO3/NF shows high electrocatalytic activity towards water oxidation and affords current density of 50 mA. cm-2 at overpotential of 395 mV in 1.0 mol·L^-1 KHCO3. Moreover, this NiCO3/NF is also durable with a long-term electrochemical durability of 60 h. This catalyst electrode achieves a high turnover frequency of 0.21 mol O2·s^-1 at the overpotential of 500 mV.

关键词： water oxidation NiCO3/NF nearly neutral conditions superior activity electocatalyst

Prussian Blue Nanoparticles with High Oxidase-like Activity for Simultaneous Detection of Ascorbic Acid and Alkaline Phosphatase in Real Samples

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

Chemical Research in Chinese Universities 2024年第6期40卷 1023-1032页

作者： TANG Zeng LAI Yue LU Hao XIA Yi JIANG Xue xiong xiaoli XIAO Ting College of Chemistry and Material Science Key Laboratory of the Evaluation and Monitoring of Southwest Land ResourcesMinistry of EducationSichuan Normal UniversityChengdu 610068P.R.China

Prussian blue nanoparticles (PB NPs) have exhibited favorable anti-inflammatory effects in animal models,and have been proved to mimic three antioxidant enzymes: peroxidase,catalase,and superoxide *** the oxidase-like activity of PB NPs has not been *** this work,PB NPs with outstanding oxidase-like activity were demonstrated by virtue of the colorimetric substrate o-phenylenediamine (OPD).Interestingly,based on the oxidase-like activity,PB NPs can also catalytically oxidize vitamin B1 (VB1) to strongly fluorescent product in the physiological environment without the addition of other *** that VB1 has no toxicity and carcinogenicity comparing with OPD,a novel PB NPs-VB1 fluorescent sensor was further developed for simple,nontoxic,and rapid detection of ascorbic acid (AA) in foods and alkaline phosphatase (ALP) in human serum samples by taking advantage of the reduction of PB NPs to Prussian White by AA or enzymatic hydrolysate of ALP and ascorbic acid 2-phosphate (AA2P);leading to the decrease of fluorescence *** extremely low detection limits of 44 nmol/L for AA and 72 mU/L for ALP as well as the excellent applicability in real samples were both ***,we envision that such a novel fluorescent probe would be potentially applied in the food analysis and clinic diagnosis fields.

关键词： Prussian blue nanoparticles Oxidase-like activity Fluorescence probe Ascorbic acid Alkaline phosphatase

Plasma-induced chemical etching generating Ni_(3)S_(2) for formaldehyde detection

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

Chinese Chemical Letters 2022年第6期33卷 3035-3038页

作者： Jiaxin Zhou Li Zhao Qiang Wang Lixin Zuo Ana Zhao Huimin Yu Xue Jiang xiaoli xiong College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068China

In this paper,Ni_(3)S_(2)nanosheet(NS)was generated by chemical etching with sodium sulfide directly on the nickel foam(NF),which was induced by dielectric barrier discharge plasma in *** with other chemical etching methods of nickel-based nanomaterials,this method was not only rapid(40 min)and mild(at room temperature and atmospheric pressure),but also showed consistent stability and good *** Ni_(3)S_(2)NS/NF electrode showed excellent performance in the electrochemical detection of formaldehyde under alkaline *** had a good linear relationship with the concentration of formaldehyde in the range of 0.002-5.45 mmol/L(R^(2)=0.9957)and the limit of detection(LOD)was 1.23μmol/L(S/N=3).The sensitivity was 1286.9μA L mmol^(–1)cm^(–2),and the response time was about 5 *** plasma-induced chemical etching strategy provides a simple and stable electrode preparation method,which has great application prospects in nonenzymatic electrochemical sensors.

关键词： Chemical etching Microplasma Electrochemical detection Formaldehyde

Preventative effect of massage on gastric volvulus in infants with gastroesophageal reflux-induced pneumonia

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2015年第5期35卷 520-527页

作者： Yan Suqi xiong xiaoli Wan Qi Liu Fan Tang Jianqiao Jiang Zhixia Zhou Lishan Yuan Kai Xie Dong Department of Integrated Traditional Chinese and Western Medicine Wuhan Children's Hospital Department of Pediatrics Zhongnan Hospital of Wuhan University Department of Radiology Wuhan Children's Hospital

OBJECTIVE:To study the preventative effects of massage on gastric volvulus(GV) in infants with gastroesophageal reflux(GER)-induced ***:One-hundred and eighty GV with GER-induced pneumonia inpatients were divided randomly into four groups:basic treatment 1(n =60),basic treatment 2(n = 30),massage treatment1(n = 60) and massage treatment 2(n = 30).Clinical examinations selected between groups 1 and 2were *** of the upper gastrointestinal tract using iodine-containing contrast was assessed in group 1 before and after treatment,whereas 24-h pH monitoring of the distal esophagus was assessed in group 2 before and after *** scores and chest radiography were assessed in all groups upon hospital admission and after *** effects were estimated after procedures in all *** prevalence of severe pneumonia among the four groups was ***:Massage treatment groups showed a significantly higher percentage of cure and total effect(P0.05)than basic treatment ***,massage treatment groups had remarkably lower scores for symptoms and signs(P<0.05,P<0.01),especially for choking on milk,than basic treatment *** was significant attenuation of chest inflammation(P<0.05,P<0.01),GV(P<0.05,P<0.01) and GER(P<0.05,P<0.01) in massage treatment groups compared with those in basic treatment ***,massage treatment groups demonstrated a lower prevalence of severe pneumonia than basic treatment groups(P<0.05).CONCLUSION:Massage treatment can prevent GV with GER-induced pneumonia in infants by timely correction of stomach rotation and subsequent attenuation of GER.

关键词： Pneumonia Infant Massage Stomach volvulus Gastroesophageal reflux

Cu_(2)Sb decorated Cu nanowire arrays for selective electrocatalytic CO_(2)to CO conversion

在线全文

学校读者我要写书评

暂无评论

Nano Research 2021年第8期14卷 2831-2836页

作者： Shiyong Mou Yonghao Li Luchao Yue Jie Liang Yonglan Luo Qian Liu Tingshuai Li Siyu Lu Abdullah M.Asiri xiaoli xiong Dongwei Ma Xuping Sun College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical engineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001China Chemistry Department Faculty of Science&Center of Excellence for Advanced Materials ResearchKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia Key Laboratory for Special Functional Materials of Ministry of Education and School of Materials Science and Engineering Henan UniversityKaifeng 475004China

The advancement of cost-effective and selective electrocatalyst towards CO_(2) to CO conversion is crucial for renewable energy conversion and storage,thus to achieve carbon-neutral cycle in a sustainable *** this communication,we report that CujSb decorated Cu nanowire arrays on Cu foil act as a highly active and selective electrocatalyst for CO_(2) to CO *** CO_(2)-saturated 0.1 M KHCO_(3),it achieves a high Faraday efficiency(FE)of 86.5%for CO,at-0.90 V *** hydrogen electrode(RHE).The H_(2)/CO ratio is tunable from 0.08:1 to 5.9:1 by adjusting the *** is worth noting that HCOO-product was totally suppressed on such catalyst,compared with Sb *** improving selectivity for CO could be attributed to the bimetallic effect and nanowire arrays structure.

关键词： Cu_(2)Sb nanowire arrays electrochemical CO_(2)reduction CO_(2)to CO conversion

黄粉虫粪基吸附剂的制备工艺优化及其吸附性能

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

环境工程学报 2016年第11期10卷 6720-6726页

作者：熊晓莉王超李宁重庆工商大学环境与资源学院催化与功能有机分子重庆市重点实验室重庆400067 成都蓉信水务产业有限公司成都610100

黄粉虫养殖过程中,会产生大量的虫粪。用黄粉虫粪为原料制成吸附剂,并用于亚甲基蓝模拟废水的处理。研究在不同磷酸浓度W、浸泡时间t1、活化温度T、活化时间t2等制备因素影响下,吸附剂对亚甲基蓝的吸附能力。结果表明,黄粉虫粪吸附剂最... 详细信息

黄粉虫养殖过程中,会产生大量的虫粪。用黄粉虫粪为原料制成吸附剂,并用于亚甲基蓝模拟废水的处理。研究在不同磷酸浓度W、浸泡时间t1、活化温度T、活化时间t2等制备因素影响下,吸附剂对亚甲基蓝的吸附能力。结果表明,黄粉虫粪吸附剂最佳制备条件为:W=25 wt%,t1=10 min,T=400℃,t2=50 min。此条件下制备的吸附剂的比表面积为(589.6±2.1)m^2·g^(-1)。该吸附剂对亚甲基蓝的吸附动力学符合Ho-Mc Kay模型,吸附速度控制步骤为内扩散,吸附等温线符合Langmuir模型,最大吸附量可达117.65 mg·g-1,吸附过程为热力学自发行为。

关键词：黄粉虫虫粪吸附剂吸附亚甲基蓝

国产Q460高强钢焊接T形截面残余应力分布试验研究

在线全文

学校读者我要写书评

暂无评论

建筑钢结构进展 2021年第9期23卷 42-53页

作者：熊晓莉王田谌磊河南工业大学土木工程学院郑州450001

残余应力是影响钢压杆整体稳定承载力的重要缺陷因素之一。为获得合理的国产Q460高强钢焊接T形截面残余应力分布模型,采用锯割法对不同截面尺寸的8个试件进行残余应力试验研究。根据实测数据,绘制各截面的残余应力分布图,研究板件宽厚... 详细信息

残余应力是影响钢压杆整体稳定承载力的重要缺陷因素之一。为获得合理的国产Q460高强钢焊接T形截面残余应力分布模型,采用锯割法对不同截面尺寸的8个试件进行残余应力试验研究。根据实测数据,绘制各截面的残余应力分布图,研究板件宽厚比、板件厚度对残余应力大小及分布宽度的影响,组成截面各板件间的相关性及残余应力的自平衡性。分析结果表明:焊缝处残余拉应力大小与板件厚度及板件宽厚比无关,相应的分布宽度与板件厚度及板件宽厚比成反比;板件外伸段中部的残余压应力大小与板件厚度和板件宽厚比成反比,相应的分布宽度与板件厚度和板件宽厚比无关;各板件内的残余应力能够分别满足自平衡条件,且全截面上的残余应力也能满足自平衡条件。基于上述分析结果,提出能够准确描述试验结果的国产Q460高强钢焊接T形截面残余应力分布模型,并进行有限元分析验证,为后续焊接T形截面钢压杆整体稳定承载力的研究提供重要参考。

关键词：国产Q460高强钢焊接T形截面残余应力试验研究分布模型有限元分析

钢筋混凝土地下粮仓仓壁土压力取值方法及仓壁结构受力分析

在线全文

学校读者我要写书评

暂无评论

应用基础与工程科学学报 2016年第1期24卷 103-114页

作者：熊晓莉金立兵王振清河南工业大学土木建筑学院河南郑州450001 河南工大设计研究院河南郑州450001

钢筋混凝土地下粮仓仓壁承受土压力、水压力及结构自重等多种荷载的作用,其承载特性复杂.采用现场检测试验方法,对仓容100t的地下试验仓进行仓壁侧压力及仓壁结构受力检测试验.采用Rankine土压力理论比较静止、主动和被动土压力大小,对... 详细信息

钢筋混凝土地下粮仓仓壁承受土压力、水压力及结构自重等多种荷载的作用,其承载特性复杂.采用现场检测试验方法,对仓容100t的地下试验仓进行仓壁侧压力及仓壁结构受力检测试验.采用Rankine土压力理论比较静止、主动和被动土压力大小,对比仓壁侧压力的理论计算结果与实测结果,分析确定了钢筋混凝土地下粮仓仓壁土压力取值方法.分别采用圆柱壳模型分析法和有限元分析法计算地下试验仓仓壁竖向弯矩和环向力,研究钢筋混凝土地下粮仓仓壁结构受力特性,分析仓壁竖向弯矩和环向力分布规律,对比理论计算结果与实测结果后指出:仓壁土压力取值方法合理;仓壁结构受力的圆柱壳模型分析法和有限元分析法结果均与试验结果吻合较好;但仓壁与仓顶、仓底连接处因边缘约束效应的影响,受力状况比较复杂,建议采用有限元分析法对结构关键部位进行精细化受力分析.

关键词：钢筋混凝土地下粮仓试验仓仓壁土压力受力特性

小异源二聚体伴侣受体在淤胆型肝炎模型中的表达及大黄素的干预作用

在线全文

学校读者我要写书评

暂无评论

中药新药与临床药理 2016年第4期27卷 474-479页

作者：丁艳熊小丽尹薇赵雷武汉市儿童医院湖北武汉430016 华中科技大学同济医学院附属协和医院湖北武汉430022

目的研究小异源二聚体伴侣受体(small heterodimer partner,SHP)在急性淤胆型肝炎大鼠模型中的表达及大黄素的干预作用。方法 40只Sprague-Dawley(SD)大鼠随机分为4组:正常对照组,模型组,大黄素组,熊去氧胆酸(UDCA)组,每组10只。除正常... 详细信息

目的研究小异源二聚体伴侣受体(small heterodimer partner,SHP)在急性淤胆型肝炎大鼠模型中的表达及大黄素的干预作用。方法 40只Sprague-Dawley(SD)大鼠随机分为4组:正常对照组,模型组,大黄素组,熊去氧胆酸(UDCA)组,每组10只。除正常对照组外,其余3组给予α-异硫氰酸萘酯(alphanaphthylisothiocyanate,ANIT)50 mg·kg^(-1)一次灌胃,建立大鼠急性淤胆型肝炎动物模型,并给予相应的药物干预,造模后48 h留取标本,以实时荧光定量PCR法及Western blot法分别检测肝组织中SHPm RNA表达及蛋白表达的变化;全自动生化分析仪检测血清总胆红素(total bilirubin,TB)、直接胆红素(direct bilirubin,DB)、丙氨酸氨基转移酶(alanine aminotransferase,ALT)、胆汁酸(total bile acid,TBA)、天冬氨酸氨基转移酶(aspartate aminotransferase,AST)、碱性磷酸酶(alkaline phosphatase,ALP)、γ-谷氨酰转移酶(gamma glutamine transferase,GGT)的水平;肝组织切片、HE染色后显微镜下观察肝组织病理学改变。结果模型组肝组织中SHP m RNA及蛋白表达水平分别为0.559±0.194、0.313±0.087,均低于正常对照组(P<0.05),大黄素组肝组织中SHP m RNA及蛋白表达水平分别为0.892±0.390、0.706±0.193,均高于模型组(P<0.05);大黄素组血清TB、DB、ALT、TBA、AST、ALP均明显低于模型组(P<0.05),且大黄素组TB、DB、ALT、TBA、AST、ALP明显低于熊去氧胆酸组(P<0.05);大黄素组肝组织病理改变较模型组明显减轻,熊去氧胆酸组肝组织病理改变亦较模型组明显减轻,但程度重于大黄素组。结论大黄素可升高ANIT诱导的大鼠急性淤胆型肝炎肝组织中SHP m RNA及蛋白表达水平。大黄素可降低血清中TB、DB、ALT、TBA、AST、ALP水平及减轻肝组织病理学损害,疗效优于熊去氧胆酸,其作用机制与促进SHP表达有关。

关键词：小异源二聚体伴侣受体大黄素淤胆型肝炎

在线全文

学校读者我要写书评

暂无评论

新型双膨胀源膨胀剂的研究

新型建筑材料 2011年第6期38卷 8-11页

作者：刘德春熊小丽西南科技大学材料科学与工程学院四川绵阳621010

以普通硅酸盐水泥熟料、石膏和石灰为原料制成膨胀源为钙矾石和Ca(OH)2的新型双膨胀源膨胀剂,并与普通膨胀剂做对比实验。新型双膨胀源膨胀剂的最优配比为m(水泥熟料:)m(石膏):m(石灰+硬脂酸)=48:32:20。其中,m(石灰):m(硬脂酸)=85:15,... 详细信息

以普通硅酸盐水泥熟料、石膏和石灰为原料制成膨胀源为钙矾石和Ca(OH)2的新型双膨胀源膨胀剂,并与普通膨胀剂做对比实验。新型双膨胀源膨胀剂的最优配比为m(水泥熟料:)m(石膏):m(石灰+硬脂酸)=48:32:20。其中,m(石灰):m(硬脂酸)=85:15,并粉磨10 min。结果表明:新型双膨胀源膨胀剂在掺量为8%～12%且标养条件下,试样具有良好的膨胀效果,且膨胀率随掺量的增加而增长;同样条件下,掺新型双膨胀源膨胀剂的膨胀率大于普通膨胀剂。掺8%～12%膨胀剂的试块强度大于水泥净浆,其中以双膨胀源膨胀剂最优,并随掺量的增加力学性能略有降低。该新型膨胀剂复合GB 23439—2009《混凝土膨胀剂》要求。

关键词：双膨胀源膨胀剂膨胀率硫铝酸盐石灰