检索结果-南通市图书馆

Chinese Chemical Letters 2022年第5期33卷 2677-2680页

作者： Yuan Xue fengfei chen Bin Sun Hualin Lin Bin Dai Sheng Han School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China School of Chemistry and Chemical Engineering Shihezi UniversityShihezi 832003China School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China

The high effective nano-hybrid pour point depressant(PPD)has attracted extensive attention for its po-tential application in improving the cold flow properties of diesel *** this paper,the nano-hybrid PPD was prepared by melt-blending method using three different alkyl chain lengths(i.e.,tetradecyl,hexade-cyl,and octodecyl)of n-alkyl methacrylate-maleic anhydride copolymers(R 1 MC-MA,R 1=C_(14),C_(16),C_(18))and SiO_(2)*** effect of those nano-hybrid PPDs on the cold filter plugging point(CFPP)and solidifying point(SP)depressing of diesel fuel were *** indicated that nano-hybrid PPD showed much better performance on diesel *** diesel fuel treated with 0.2 wt%C_(14)MC-MA/SiO_(2)nano-hybrid PPD exhibited the best depression in CFPP and SP by 6℃ and 18℃,respectively,which higher than that of single C 14 ***-temperature curves and polarized optical microscopy were conducted to explore the performance mechanism;and results presented that nano-hybrid PPD of C_(14)MC-MA/SiO_(2)could effectively lower the low-temperature viscosity,and modify the crystallization behavior and crystal morphology of ***,the cold flow properties of diesel were significantly improved.

关键词： Diesel fuel Pour point depressant Nano-hybrid Cold flow properties Crystallization behavior

在线全文

学校读者我要写书评

暂无评论

从三因致湿论治2型糖尿病

光明中医 2024年第4期39卷 794-796页

作者：祝俊香陈凤菲张传霞岳文超济宁市中医院内分泌科山东济宁272000 济宁市中医院康复科山东济宁272000 济宁市中医院疼痛科山东济宁272000

2型糖尿病为临床常见的慢性内分泌系统疾病,中医多以消渴论治。历代文献论及消渴病机,多以肺燥、胃热、阴虚为主。近些年,湿邪在消渴发病中的重要性在临床上得到了较多验证。此文依据《三因极一病证方论》的“三因学说”中有关湿邪形成... 详细信息

2型糖尿病为临床常见的慢性内分泌系统疾病,中医多以消渴论治。历代文献论及消渴病机,多以肺燥、胃热、阴虚为主。近些年,湿邪在消渴发病中的重要性在临床上得到了较多验证。此文依据《三因极一病证方论》的“三因学说”中有关湿邪形成的原因,从内因、外因、不内外因三个方面探讨湿邪对消渴形成的作用,对2型糖尿病临床治疗选方用药作出指导,以服务临床。

关键词：消渴 2型糖尿病湿邪三因学说

Effects of the chemical structure of surfactants on the stability of naphthenic oil-based metalworking fluids

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第2期31卷 345-348页

作者： Yuan Xue Jinbao Liu Maiying Xie fengfei chen Mingan Zhou Hualin Lin Fan Zhang Shizhou Liu Zhiqiao Wu Sheng Han School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Department of Science and Technology Shanghai Urban Construction Vocational CollegeShanghai 201415China College of Chemistry and Chemical Engineering Shanxi Datong UniversityDatong 037009China

In this study,various nonionic surfactants(NS) with different ethylene oxide(EO) numbers and tail lengths and its binary blends with anionic surfactants(AS) were used as emulsifiers for naphthenic oil to form the microemulsion metalworking fluids(MWFs),and the effects of them on the stability of the emulsion system were investigated by formulation triangle *** results indicated that binary complex surfactants of NS and AS as emulsifiers exhibited better emulsifying effect than that of single *** with different EO numbers and tail lengths presented various emulsifying ***(EO=10)exhibited the greatest number of stable formulations,especially the TX-10,but no linear relationship existed between the number of stable formulations and the tail length of *** addition,aromatic primary alcohol ethoxy late(APAE) series surfactants containing benzene groups similar to the cycloalkanes in the naphthenic oil so that presented the best emulsifying affect and the greatest number of stable *** co-surfactant of sodium dodecyl benzene sulfonate(SDBS) binary blends with NS exerted the best synergistic effect,and the stable formulations numbers were ranged from 5 to 7,next sodium stearate(SS) comes last followed by sodium dodecyl sulfate(SDS-1) and sodium dodecyl sulfonate(SDS-2).

关键词： Metal working fluid Emulsion stability Emulsifying effects Stable formulations Naphthenic oil

Alloyed Pt-Sn nanoparticles on hierarchical nitrogen-doped carbon nanocages for advanced glycerol electrooxidation

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第5期17卷 4055-4061页

作者： Jietao Jiang Liqi Zhou fengfei Xu Guanghai chen Xiaoyu Liu Zhen Shen Lijun Yang Qiang Wu Xizhang Wang Zheng Hu Key Laboratory of Mesoscopic Chemistry of MOE Jiangsu Provincial Laboratory for NanotechnologySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional MaterialsCollege of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

Glycerol is an alternative sustainable fuel for fuel cells,and efficient electrocatalyst is crucial for glycerol oxidation reaction(GOR).The promising Pt catalysts are subject to the inadequate capability of C-C bond cleavage and the susceptibility to ***,Pt-Sn alloyed nanoparticles are immobilized on hierarchical nitrogen-doped carbon nanocages(hNCNCs)by convenient ethylene glycol reduction and subsequent thermal *** optimal Pt_(3)Sn/hNCNC catalyst exhibits excellent GOR performance with a high mass activity(5.9 A·mg_(Pt)^(-1)),which is 2.7 and 5.4 times higher than that of Pt/hNCNC and commercial Pt/C,*** an enhancement can be mainly ascribed to the increased anti-poisoning and C-C bond cleavage capability due to the Pt_(3)Sn alloying effect and Sn-enriched surface,the high dispersion of Pt_(3)Sn active species due to N-participation,as well as the high accessibility of Pt_(3)Sn active species due to the three-dimensional(3D)hierarchical architecture of *** study provides an effective GOR electrocatalyst and convenient approach for catalyst preparation.

关键词： Pt_(3)Sn alloy hierarchical nitrogen-doped carbon nanocages glycerol electrooxidation anti-poisoning C-C bond cleavage

Self-supported NiFe-LDH nanosheets on NiMo-based nanorods as high-performance bifunctional electrocatalysts for overall water splitting at industrial-level current densities

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

Nano Research 2024年第5期17卷 3769-3776页

作者： Yan Zhang Biao Feng MingLei Yan Zhen Shen Yiqun chen Jingyi Tian fengfei Xu Guanghai chen Xizhang Wang Lijun Yang Qiang Wu Zheng Hu Key Laboratory of Mesoscopic Chemistry of Ministry of Education(MOE)and Jiangsu Provincial Lab for Nanotechnology School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China College of Water Conservancy and Hydropower Engineering Sichuan Agricultural UniversityYa’an 625014China

Efficient,durable and economic electrocatalysts are crucial for commercializing water electrolysis ***,we report an advanced bifunctional electrocatalyst for alkaline water splitting by growing NiFe-layered double hydroxide(NiFe-LDH)nanosheet arrays on the conductive NiMo-based nanorods deposited on Ni foam to form a three-dimensional(3D)architecture,which exhibits exceptional performances for both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).In overall water splitting,only the low operation voltages of 1.45/1.61 V are required to reach the current density of 10/500 mA·cm^(-2),and the continuous water splitting at an industrial-level current density of 500 mA·cm^(-2) shows a negligible degradation(1.8%)of the cell voltage over 1000 *** outstanding performance is ascribed to the synergism of the HER-active NiMo-based nanorods and the OER-active NiFe-LDH nanosheet arrays of the hybridized 3D ***,the dense NiFe-LDH nanosheet arrays enhance the local pH on cathode by retarding OH-diffusion and enlarge the electrochemically active surface area on anode,while the conductive NiMo-based nanorods on Ni foam much decrease the charge-transfer resistances of both *** study provides an efficient strategy to explore advanced bifunctional electrocatalysts for overall water splitting by rationally hybridizing HER-and OER-active components.

关键词： alkaline water splitting bifunctional electrocatalysts layered double hydroxides high durability industrial current densities

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

儿童骨折的损伤特点及治疗趋势

中华创伤骨科杂志 2024年第5期26卷 374-377页

作者：林凤飞卢育南陈顺有福州市第二总医院小儿骨科福建省小儿骨科临床重点专科福建省创伤骨科急救与康复临床医学研究中心福州350007

全国每年约有500万的儿童发生骨折,其骨折的损伤模式不同于成人,诊断治疗具有特殊性[1]。据中国医师协会骨科医师分会小儿骨科工作委员会的统计数据,2023年国内专业从事儿童骨科的医师人数不足2000人,且主要集中在一、二线城市,很多医... 详细信息

全国每年约有500万的儿童发生骨折,其骨折的损伤模式不同于成人,诊断治疗具有特殊性[1]。据中国医师协会骨科医师分会小儿骨科工作委员会的统计数据,2023年国内专业从事儿童骨科的医师人数不足2000人,且主要集中在一、二线城市,很多医院的儿童骨折由成人骨科医生来处理,了解儿童骨折的特殊性,掌握其治疗原则,是广大骨科医师的必修课。在2023年2期小儿骨科重点刊,我们就儿童最好发的"肘部损伤"做了总结[2],本期重点刊组稿我们就儿童骨折的"损伤特点及治疗趋势"为主题,向广大骨科医师介绍儿童骨折的治疗原则和注意事项,希望大家能熟练掌握儿童创伤的诊治特点,并提倡小儿骨科的标准化、专业化治疗。

关键词：中国医师协会骨科医师小儿骨科损伤特点儿童骨折骨科医生肘部损伤诊治特点

在线全文

学校读者我要写书评

暂无评论

基于仲景理论探讨以通为补的临床应用

中国中医药现代远程教育 2023年第7期21卷 79-82页

作者：祝俊香岳文超陈凤菲济宁市中医院内分泌科山东济宁272000 济宁市中医院疼痛科山东济宁272000 济宁市中医院康复科山东济宁272000

“以通为补”属于中医治则治法范畴,指某些疾病治疗中应用发汗、攻下、消导、行气等祛邪手段,即“通”法,最终起到使人体脏腑达到阴平阳秘状态的“补”的作用。“以通为补”学术思想自古而有之,随着医学发展,后世医家在其本义基础上进... 详细信息

“以通为补”属于中医治则治法范畴,指某些疾病治疗中应用发汗、攻下、消导、行气等祛邪手段,即“通”法,最终起到使人体脏腑达到阴平阳秘状态的“补”的作用。“以通为补”学术思想自古而有之,随着医学发展,后世医家在其本义基础上进行扩展,至今对于指导临床治疗仍有重大意义。张仲景作为古代著名医家,虽其著作中未明确提出“以通为补”,但《伤寒论》《金匮要略》中诸多理法方药无不透露出这种学术思想。此文对“以通为补”的理论源流及仲景理论下“以通为补”的临床应用进行探讨,以期有助于临床。

关键词：以通为补《伤寒论》《金匮要略》仲景理论

在线全文

学校读者我要写书评

暂无评论

基于研究生培养的《文献检索》教学改革

广东化工 2018年第5期45卷 242-243页

作者：韩生陈凤飞薛原蔺华林上海应用技术大学化学与环境工程学院上海201418

高校研究生信息素养严重不足的状况影响了研究生对前沿新型行业的把控。为了满足新形势下高校发展的需求,本文结合《文献检索》教学现状,分析其教学改革的重要性和教学过程中存在的问题,并且提出了改革的具体方案。

关键词：研究生信息素养文献检索教学改革

干湿循环中磷石膏基防渗材料的防渗和剪切特性

在线全文

学校读者我要写书评

暂无评论

浙江大学学报（工学版） 2024年第9期58卷 1902-1911页

作者：宋牧原王宜将杨微郎丰飞陈伟刘雪莹湖南大学建筑安全与节能教育部重点实验室湖南长沙410082 湖南大学建筑安全与环境国际联合研究中心湖南长沙410082 湖南大学土木工程学院湖南长沙410082 中蓝长化工程科技有限公司湖南长沙410000 湖北大峪口化工有限责任公司湖北钟祥431911

研制新型聚丙烯酸钠改性膨润土-砂-磷石膏(PMB-S-PG)防渗材料,用于磷石膏渣场或路基防渗层,为多途径消纳磷石膏提出新思路.对比PMB-S-PG、钠基膨润土-砂-磷石膏(RB-S-PG)与聚丙烯酸钠改性膨润土-砂(PMB-S)在干湿循环下的防渗及剪切特性... 详细信息

研制新型聚丙烯酸钠改性膨润土-砂-磷石膏(PMB-S-PG)防渗材料,用于磷石膏渣场或路基防渗层,为多途径消纳磷石膏提出新思路.对比PMB-S-PG、钠基膨润土-砂-磷石膏(RB-S-PG)与聚丙烯酸钠改性膨润土-砂(PMB-S)在干湿循环下的防渗及剪切特性,并结合扫描电子显微镜(SEM)及压汞(MIP)试验探明干湿(DW)循环下试样防渗和强度弱化的微观机理.结果表明:试样RB-S-PG、PMB-S-PG及PMB-S的渗透系数在9次循环后分别上升了146.5倍、6.14倍及1.59倍,说明PMB有效提升了试样的抗干湿循环能力.试样抗剪强度的大小关系为PMB-S-PG>RB-S-PG>PMB-S,表明PG和PMB有助于提升试样的抗剪强度.试样的抗剪强度均随干湿循环次数的增加呈先降低后稳定的变化趋势.通过MIP试验发现试样PMB-S-PG中孔隙随循环次数的增加由单峰演变为三峰结构,3个峰相应粒径的孔隙体积和数量不断增加,颗粒间胶结弱化,但试样中孔隙体积增量逐渐减小,可见在干湿循环作用下,试样的防渗及强度特性先弱化而后趋于稳定.

关键词：磷石膏(PG) 干湿(DW)循环渗透系数抗剪强度孔隙结构

体外冲击波结合康复训练治疗肌肉骨关节慢性疼痛的疗效观察

在线全文

学校读者我要写书评

暂无评论

反射疗法与康复医学 2021年第6期2卷 157-159页

作者：刘文奇王晗陈凤菲程爱军济宁市中医院康复科山东济宁272000 济宁市中医院针灸科山东济宁272000

目的分析肌肉骨关节慢性疼痛患者应用体外冲击波结合康复训练治疗的临床效果。方法选取2020年1—12月在该院进行治疗的肌肉骨关节慢性疼痛患者82例为研究对象,依据抽签法随机分为对照组与研究组。对照组患者(41例)接受康复训练,研究组患... 详细信息

目的分析肌肉骨关节慢性疼痛患者应用体外冲击波结合康复训练治疗的临床效果。方法选取2020年1—12月在该院进行治疗的肌肉骨关节慢性疼痛患者82例为研究对象,依据抽签法随机分为对照组与研究组。对照组患者(41例)接受康复训练,研究组患者(41例)接受体外冲击波结合康复训练。对比两组的临床疗效、功能障碍指数、生活质量。结果在临床总有效率方面,研究组高于对照组,差异有统计学意义(P<0.05)。在Oswestry功能障碍指数评分方面,研究组治疗后评分低于对照组,差异有统计学意义(P<0.05)。在生活质量综合评定问卷评分方面,研究组治疗后的躯体功能、心理功能、社会功能、物质生活状态、总体生活质量评分均高于对照组,组间差异有统计学意义(P<0.05)。结论肌肉骨关节慢性疼痛患者采用体外冲击波结合康复训练治疗的临床效果更显著,不仅可以改善患者的功能障碍,还可以提高其生活质量。

关键词：肌肉骨关节慢性疼痛体外冲击波康复训练临床疗效