检索结果-南通市图书馆

同方期刊数据库

南通地区医疗机构手术室医护人员手术室安全核查制度知信行调查

在线全文

学校读者我要写书评

暂无评论

华南预防医学 2024年第2期50卷 164-167,171页

作者：尚鸿娣徐志梅胡苏苏黄玲南通大学附属南通第三医院江苏南通226006

目的调查南通市手术室医护人员手术室安全核查制度的知信行的影响因素。方法采用简单方便抽样法于2022年11—12月在南通市辖3个区、1个县,代管3个县级市各抽取1所医院,对抽中医院的手术室医护人员进行手术室安全核查制度的知信行调查... 详细信息

目的调查南通市手术室医护人员手术室安全核查制度的知信行的影响因素。方法采用简单方便抽样法于2022年11—12月在南通市辖3个区、1个县,代管3个县级市各抽取1所医院,对抽中医院的手术室医护人员进行手术室安全核查制度的知信行调查,应用描述流行病学分析方法对医护人员手术室安全核查制度的知信行现状进行分析,通过单、多因素分析方法分析其影响因素。结果共纳入594名手术室医护人员为有效调查对象,手术室安全核查制度的认知得分平均(6.78±1.93)、信念得分平均(6.09±1.81)、行为得分平均(3.27±1.04)分,均处于中等水平。多重线性回归分析结果提示学历(β′=0.453)、医院级别(β′=0.591)、职业疲乏(β′=-0.662)、职业认同感(β′=0.530)、工作效能(β′=0.321)、近1年相关培训(β′=0.415)是南通市手术室医护人员手术室安全核查制度认知的影响因素;学历(β′=0.519)、医院级别(β′=0.156)、职业疲乏(β′=-0.472)、职业认同感(β′=0.588)、工作效能(β′=0.410)、近1年相关培训(β′=0.398)、手术室安全核查制度认知(β′=0.783)是南通市手术室医护人员手术室安全核查制度信念的影响因素;学历(β′=0.159)、医院级别(β′=0.284)、职业疲乏(β′=-0.071)、职业认同感(β′=0.450)、工作效能(β′=0.589)、近1年相关培训(β′=0.392)、手术室安全核查制度认知(β′=0.418)及信念(β′=0.687)是南通市手术室医护人员手术室安全核查制度行为的影响因素。结论南通地区手术室医护人员手术室安全核查制度的知信行受到多种因素影响,需要根据其手术室安全核查制度的知信行影响因素采取针对性干预措施,如增加相关培训活动以提高认知,完善管理方法以改善手术室医护人员的职业疲乏状况、提高其职业认同感和工作效能,进而提高手术室安全核查制度的知信行水平。

关键词：职业安全医护人员防护知识态度实践影响因素

在线全文

学校读者我要写书评

暂无评论

三华李化学脱叶药剂筛选试验研究初报

中国南方果树 2024年第3期53卷 206-209页

作者：徐志美王红梅周民武李珍赵碧英刘珊廷林子桢高兴易显荣广西桂北特色经济作物种质创新与利用重点实验室/广西特色作物研究院广西桂林541004 广西壮族自治区水果技术指导站南宁530022

迫使三华李提早落叶,可以实现三华李二次开花,从而进行反季节促早栽培。以4~5年生三华李果树为试材,通过喷施脱落酸、乙烯利、噻苯隆、石硫合剂等进行生长季脱叶试验。结果表明,全株喷施45%石硫合剂10~15倍液总体效果最好,药后30 d脱叶... 详细信息

迫使三华李提早落叶,可以实现三华李二次开花,从而进行反季节促早栽培。以4~5年生三华李果树为试材,通过喷施脱落酸、乙烯利、噻苯隆、石硫合剂等进行生长季脱叶试验。结果表明,全株喷施45%石硫合剂10~15倍液总体效果最好,药后30 d脱叶率可达80%以上,老叶脱叶彻底,只剩树体顶端嫩叶,且脱叶速度较缓,有利于树体营养的积累,同时还可起到清园的作用;乙烯利脱叶速度快,效果好,喷药后15 d脱叶率达到100%,但易产生药害,对三华李树体影响较大,不推荐后续使用。

关键词：三华李脱叶药剂筛选

Impacts of water conservancy and soil conservation measures on annual runoff in the Chaohe River Basin during 1961-2005

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2010年第6期20卷 947-960页

作者： LI Zijun LI Xiubin xu zhimei College of Population Resources and Environment Shandong Normal University Jinan 250014 China Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China

Taking the Chaohe River Basin above the Miyun Reservoir in North China as a study area, the characteristics and variation trends of annual runoff and annual precipitation during 1961-2005 were analyzed applying Mann-Kendall test method on the basis of the hydrologic data of the major hydrological station （Xiahui Station） located at the outlet of the drainage basin and the meteorological data of 17 rainfall stations. Human activities including water conservancy projects construction and water diversion as well as implementation of soil and water conservation from 1961 to 2005 were carefully studied using time series contrasting method. The referenced period （1961-1980） that influenced slightly by human activities and the compared period （1981-2005） that influenced significantly by water conservancy and soil conservation measures were identified according to the runoff variation process analysis and abrupt change points detection during 1961-2005 applying double accumulative curve method, mean shift t-test method and Mann-Kendall mutation test technique. Based on the establishment of a rainfall-runoff empirical statistical model, impacts and the runoff-reducing effects of water conservancy and soil conservation measures on runoff reduction were evaluated quantitatively. The major results could be summarized as follows：（1） The annual precipitation in the drainage basin tends to decrease while the runoff has declined markedly since the 1960s, the average annual runoff from 1991 to 2000 was only 90.9% in proportion to that from 1961 to 1970. （2） The annual runoff variations in the drainage basin are significantly related to human activities. （3） During 1981-1990, 1991-2000, 2001-2005 and 1981-2005, the average annual runoff reduction amounts were 1.15×10^8, 0.28×10^8, 1.10×10^8 and 0.79×10^8 m^3 respectively and the average annual runoff-reducing effects were 31.99%, 7.13%, 40.71% and 23.79% accordingly. Runoff-reducing effects by water conservancy and soil conservation

关键词： impacts water conservancy and soil conservation measures annual runoff rainfall-runoff empirical statistical model the Chaohe River Basin

Coupled interactive effects of ammonia and hydrogen additions on ethylene diffusion flames: A detailed kinetic study

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第3期67卷 930-948页

作者： XIAO JiaYi xu TingTing SHU zhimei DENG QiGe ZHAO xuan YING YaoYao LI TianJiao LIU Dong MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing 210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing210094China

In order to create effective combustion technologies and fuels with low or no carbon emissions,the research was conducted to assess the coupled interactive effects of NH_(3) and H_(2) additions on ethylene counterflow diffusion flames from a kinetic *** effects of the NH_(3)/H_(2) combination on flame temperatures,major species,key radicals,important intermediate species,representative oxygenated species and NO_xwere *** results of the study utilizing fictitious inert NH_(3) and/or H_(2) revealed the chemical effects of the two *** was found that the NH_(3)/H_(2) coupled effects had a more effective inhibitory effect on soot precursors than the effects of corresponding sum of single NH_(3) or H_(2) *** production of soot precursors was promoted by the coupled chemical effects of NH_(3) and H_(2),but the coupled dilution and thermal effects were observed to have a greater impact,resulting in a decrease of the mole fractions of soot *** for the interaction of NH_(3) and H_(2) effects,the presence of H_(2) decreased the chemical effects of NH_(3) on the augmentation of C_(2)H_(2),A1,A2,and CH_(3)CHO mole *** NH_(3) addition alleviated the H_(2) chemical effects on increasing C_(2)H_(2),C_(3)H_(3),A1 and A2 ***,the NH_(3)chemical effects on C_(3)H_(3),OH and CH_(3)CHO were enhanced when H_(2) was *** presence of NH_(3) augmented the chemical effects of H_(2) on the growth of OH mole ***,the H_(2) chemical effects hindered the production of NO and NO_(2) in the presence of NH_(3).

关键词： NH_(3)/H_(2)addition kinetic analysis coupled interactive effects chemical effects

Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames:influences of diluents

在线全文

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2024年第1期11卷 232-249页

作者： zhimei Shu Tingting xu Jiayi Xiao Qige Deng xuan Zhao Tianjiao Li Yaoyao Ying Dong Liu MIIT Key Laboratory of Thermal Control of Electronic Equipment School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing210094China Advanced Combustion Laboratory School of Energy and Power EngineeringNanjing University of Science and TechnologyNanjing210094China

This study aimed to investigate the effects of ammonia addition on ethylene counter-flow diffusion flames with different diluents on the fuel or oxidizer side,using kinetic analyses.A special emphasis was put on assessing the coupled chemical effects of NH_(3) and CO_(2) on C2H4 combustion *** chemical effects could be evaluated by comparing fictitious inert NH_(3) or CO_(2) with normal active NH_(3) or CO_(2).The results revealed that the addition of NH_(3) decreased the mole fractions and production rates of key soot precursors,such as acetylene,propynyl,and *** CO_(2) was used as the dilution gas,the coupled chemical effects of NH_(3) and CO_(2) were affected by the chemical effects of CO_(2) to varying *** the oxidizer-side CO_(2) addition,the coupled chemical effects of NH_(3) and CO_(2) reduced the mole fractions of H,O,OH radicals,acetylene,propynyl,and benzene,while the effects differed from the fuel-side CO_(2) *** coupled chemical effects of NH_(3) and CO_(2) also promoted the formation of aldehyde contaminants,such as acetaldehyde,to some extent,particularly with CO_(2) addition on the oxidizer side.

关键词： Ammonia addition Diluents Coupled chemical effects Kinetic analysis

High-efficiency acetaldehyde removal during solid-state polycondensation of poly(ethylene terephthalate) assisted by supercritical carbon dioxide

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 Journal of Chemical Engineering 2018年第6期26卷 1285-1291页

作者： Zhenhao Xi Tian Liu Wei Si Fenglei Bi zhimei xu Ling Zhao State Key Laboratory of Chemical Engineering East China University of Science and Technology

The concentration of acetaldehyde(AA) is the main quality index of poly(ethylene terephthalate)(PET) used in food and drink packaging.A new method for AA removal has been developed by using supercritical carbon dioxide(sc CO2) during the solid-state polycondensation of *** influence factors of AA removal including the temperature,pressure,reaction time and the size of pre-polymer particles are systematically studied in this *** results indicate that it is a highly efficient way to obtain high molecular weight PET with relative low concentration of ***,the polymerization degree of PET could increase from 27.9 to 85.6 while the concentration of AA reduces from 0.229 × 10^(-6) to 0.055 × 10^(-6) under the optimal operation conditions of 230 °C,8 MPa and size of 0.30–0.45 *** performance tests show the increasing extent of PET crystallinity due to the fact that the plasticization of sc CO_2 is not obvious with extended reaction time,therefore the increasing crystallinity has no significant influence on AA *** observations reveal that the effects of sc CO_(2-) induced plasticization and swelling on PET increase significantly with the decrease of prepolymer size,and the surface of PET becomes more loose and porous in favor of the AA removal.

关键词： Supercritical CO2 Solid-state polycondensation Poly(ethylene terephthalate) Removal of acetaldehyde

A Study of the Structural Properties and Thermal Stability of Chitosanases EAG1 by Molecular Dynamics Simulations

在线全文

学校读者我要写书评

暂无评论

Journal of Biomedical Science and Engineering 2018年第11期11卷 320-326页

作者： Yueming Li Jianchun xu zhimei xu Qingdao Langyatai Group Co. Ltd. Qingdao China

Chitosanases EAG1, a classical glycoside hydrolase from Bacillus ehimensis, is relatively unstable with higher temperature. This shortcoming seriously restricts its industrial application. Therefore, it is crucial to clarify the theoretical basis of thermo stability and to produce enzymes with high activity and stability. Using the structural modeling and molecular dynamical simulation, residues Leu84, Gly113, Asp116, Ala207 and Leu286 were believed to be the key residues for structural stability. Then the predicted residue Leu84 was mutated to ALA. It was shown that the L84A mutation can improve the thermal stability of chitosanases EAG1. Together with previous studies, mutations of G113C, D116C, A207C and L286C forms two sulfur bonds can change the thermal stability of EAG1. The results suggest that the thermal stability of EAG1 could be engineered by site-directed mutagenesis on the conserved residues. This protocol could be employed for improving thermal stability of other chitosanases EAG1.

关键词： Chitosanases EAG1 Thermal Stability Structural Modeling Moleculrar Dynamical Simulation

Effect of Marine Bacillus BC-2 on the Health-Beneficial Ingredients of Flavor Liquor

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

Food and Nutrition Sciences 2019年第6期10卷 606-612页

作者： Yueming Li Jianchun xu zhimei xu Qingdao Langyatai Group Co. Ltd. Qingdao China

The main aroma component of Luzhou-flavor Liquor is ethyl caproate, which is combined with appropriate amount of ethyl butyrate, ethyl acetate, ethyl lactate and so on. By adding the marine bacillus BC-2 (Accession number: MK811408) to substrate sludge, the bacillus complex bacterial liquid (pit Mud Functional Bacterial liquid) has been modified. The complex bacterial liquid was used in the production of Luzhou-flavor Liquor and it dramatically promoted the content of health-beneficial ingredients in the new workshop. These results demonstrated that the marine bacillus BC-2 can effectively improve the quality and health benefit of Luzhou-flavor Liquor.

关键词： Luzhou-Flavor Liquor Marine Bacillus BC-2 Flavoring Components

基于MP-PIC方法的冶金硅氢氯化流化床反应器模拟

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

化工学报 2022年第10期73卷 4419-4428页

作者：吴诗鸣陈皓宁宗原许志美赵玲华东理工大学化学工程联合国家重点实验室上海200237

冶金硅氢氯化流化床是目前多晶硅生产工艺中实现四氯化硅(silicontetrachloride,STC)循环利用的关键反应器。基于MP-PIC方法建立了冶金硅氢氯化流化床反应器模型。模型中反应源项采用总包反应动力学进行计算。在网格以及计算颗粒包含的... 详细信息

冶金硅氢氯化流化床是目前多晶硅生产工艺中实现四氯化硅(silicontetrachloride,STC)循环利用的关键反应器。基于MP-PIC方法建立了冶金硅氢氯化流化床反应器模型。模型中反应源项采用总包反应动力学进行计算。在网格以及计算颗粒包含的真实颗粒数量无关性检验的基础上,对反应器内三氯氢硅(trichlorosilane,TCS)初始浓度进行了无关性检验。模型验证结果表明,模拟结果与实验值符合良好。反应器特征分析结果表明:TCS产率受化学平衡与气固两相流动因素共同控制;反应器操作压力对TCS产率的影响较小;提高进口H_(2)/STC摩尔比,可以提高TCS产率但会降低H_(2)的转化率。

关键词：多晶硅氢氯化流化床反应器计算流体力学 MP-PIC

维普期刊数据库博看期刊