检索结果-南通市图书馆

维普期刊数据库博看期刊

Gypenosides ameliorate morphine-induced immunosuppression with an increased proportion of thymic T lymphocyte subsets and are involved in the regulation of the cAMP-CREM/CREB-IL-2 pathway

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第3期11卷 120-123页

作者： Hui Wang zhonghao li Qisheng Wang Weixin lin Ziting Zhou Xinru Mu Yongwei Jiang Shengfeng Lu Shaodong Chen Zhigang Lu Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor Nanjing University of Chinese MedicineNanjingJiangsu 210023China Key Laboratory of Acupuncture and Medicine Research of Ministry of Education Nanjing University of Chinese MedicineNanjingJiangsu 210023China College of Pharmacy Nanjing University of Chinese MedicineNanjingJiangsu 210023China School of Medicine Xiamen UniversityXiamenFujian 361102China

Opioid abuse can suppress the lymphatic system function,and produce severe immunosuppression that poses a significant risk of opportunistic infections such as methicillinresistant Staphylococcus aureus(MRSA)pneumonia.^(1,2)Gypenosides(Gps)are the most important immunomodulator components in the Chinese herbal medicine Gynostemma pentaphyllum.

关键词： herbal Gypenosides immunosuppression

A Novel Method for Determining the Void Fraction in Gas-liquid Multi-Phase Systems Using a Dynamic Conductivity Probe

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

Fluid Dynamics & Materials Processing 2024年第6期20卷 1233-1249页

作者： Xiaochu Luo Xiaobing Qi Zhao Luo zhonghao li Ruiquan liao Xingkai Zhang Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering Yangtze UniversityWuhan434000China Oil and Gas Engineering Research Institute PetroChina Tarim Oilfield CompanyKorla84100China Xinjiang Kunlun Engineering Consulting Co. Ltd.Karamay834000China Petrochina Dagang Oilfield Company Production Technology Research Institute Tianjin300000China

Conventional conductivity methods for measuring the void fraction in gas-liquid multiphase systems are typically affected by accuracy problems due to the presence of fluid flow and salinity.This study presents a novel approach for determining the void fraction based on a reciprocating dynamic conductivity probe used to measure the liquid film thickness under forced annular-flow conditions.The measurement system comprises a cyclone,a conductivity probe,a probe reciprocating device,and a data acquisition and processing system.This method ensures that the flow pattern is adjusted to a forced annular flow,thereby minimizing the influence of complex and variable gas-liquid flow patterns on the measurement results;Moreover,it determines the liquid film thickness solely according to circuit connectivity rather than specific conductivity values,thereby mitigating the impact of salinity.The reliability of the measurement system is demonstrated through laboratory experiments.The experimental results indicate that,in a range of gas phase superficial velocities 5–20 m/s and liquid phase superficial velocities 0.079–0.48 m/s,the maximum measurement deviation for the void fraction is 4.23%.

关键词： Forced annular flow dynamic conductivity probe void fraction gas-liquid flow liquid film thickness

Enhancing lithium-sulfur battery performance with In_(2)O_(3)-In_(2)S_(3)@NSC heterostructures:Synergistic effects of double barrier and catalytic transformation

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

Journal of Materials Science & Technology 2024年第2期169卷 105-114页

作者： Deqing He Chunyu Zhu Yutao Huo zhonghao Rao School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Hebei Key Laboratory of Thermal Science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(liPSs)are considered the main obstacle to the commercial application of lithium-sulfur(li-S)batteries.To accelerate the conversion by catalysis and inhibit the shuttling of soluble liPSs in li-S batteries,a solution is proposed in this study.The solution involves fabrication of N,S co-doped carbon coated In_(2)O_(3)/In_(2)S_(3)heterostructure(In_(2)O_(3)-In_(2)S_(3)@NSC)as a multifunctional host material for the cathode.The In_(2)O_(3)-In_(2)S_(3)@NSC composite can reduce the Gibbs free energy for the conversion reactions of liPSs,which results in superior performance.The synergy between different components in In_(2)O_(3)-In_(2)S_(3)@NSC and the unique 3D structure facilitate ion and electron transport in li-S batteries.The In_(2)O_(3)-In_(2)S_(3)@NSC/li 2 S 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 C.Overall,this study proposes a promising solution to improve the energy storage properties of li-S batteries,which could potentially facilitate the commercialization of li-S batteries.

关键词： li-S battery Multifunctional host material Synergy Heterostructures Energy storage properties

Osteology of Leptobrachella bijie(Anura,Megophryidae)

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

Asian Herpetological Research 2024年第2期15卷 90-103页

作者： Wei li Meihua ZHANG zhonghao LUO Jing liU Tuo SHEN Bo CHEN Haijun SU Bin WANG College of Forestry Guizhou UniversityGuiyang 550025GuizhouChina Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041SichuanChina

The Asian leaf litter toad genus Leptobrachella contains more than 100 species widely distributed in southwestern Asia.However,the systematic profiles of this group remain unresolved.Osteological morphology is important for taxonomic and phylogenetic studies.However,few studies have focused on the osteology of the genus.Herein,we comprehensively described the osteological features of a representative species L.bijie based on micro-CT scanning and double-staining methods.The results show that the skull of adult L.bijie is well-ossified,exhibiting sexual dimorphism and minimal intraspecific variation.The skull length is slightly greater than the width,with the maxilla slightly overlapping with the quadratojugal.The nasal connects with the sphenethmoid in males,but only part or not connects with the sphenethmoid in females.The transverse processes of the sacrum are robust and symmetrically butterfly-shaped,and the presacral vertebrae are procoelous.The pectoral girdle is arciferous.The phalangeal formula is 2-2-3-3 for the hand,and 2-2-3-4-3 for the foot.This study provides the first detailed and comprehensive osteological accounts of the genus Leptobrachella.

关键词： sexual dimorphism skeleton taxonomy

Deep eutectic solvent strategy enables an octahedral Ni–Co precursor for creating high-performance NiCo_(2)O_(4) catalyst toward oxygen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2022年第6期7卷 1217-1227页

作者： Chenyun Zhang Bingwei Xin Tingting Chen Hao Ying zhonghao li Jingcheng Hao Key Laboratory of Colloid and Interface Chemistry Ministry of EducationShandong UniversityJinan250100China College of Chemistry and Chemical Engineering Dezhou UniversityDezhou253023China

Deep eutectic solvents(DESs)have gained much attention in the fabrication of advanced nanoelectrocatalysts due to their amazing template function.However,their stabilizing function for easily hydrolyzed inorganic nanomaterials is rarely studied.Here,a DES-mediated strategy was reported to synthesize octahedral Ni–Co precursor(NiCo–NH_(3) complex),which could be directly transformed into NiCo_(2)O_(4) nanooctahedrons after thermal decomposition.The NiCo–NH_(3) precursor in octahedral shape was achieved with the DES-mediated crystallization in the choline chloride(ChCl)/glycerol.The ChCl/glycerol DES not only tailored the morphology of the as-prepared precursor by template effect but also inhibited its hydrolysis,ensuring the successful fabrication of octahedral NiCo–NH_(3) complex precursor with high yield.The NiCo–NH_(3) complex precursor was converted to well-defined NiCo_(2)O_(4) nanooctahedrons,where the calcination temperature and time were explored in detail.It revealed that DES could participate in the conversion process to control the morphology of calcination product.The resultant NiCo_(2)O_(4) nanooctahedrons demonstrated excellent electroactivity and remarkable durability for oxygen evolution reaction(OER).The present strategy not only offers an efficient OER electrocatalyst but also enriches the approaches of DESs in designing advanced nanocatalysts.

关键词： Deep eutectic solvents Choline chloride Glycerol Oxygen evolution reaction

Measurement and model of density,viscosity,and hydrogen sulfide solubility in ferric chloride/trioctylmethylammonium chloride ionic liquid

在线全文

学校读者我要写书评

暂无评论

中国化学工程学报:英文版 2023年第7期59卷 210-221页

作者： zhonghao li Yuanyuan Yang Huanong Cheng Yun Teng Chao li Kangkang li Zhou Feng Hongwei Jin Xinshun Tan Shiqing Zheng College of Chemical Engineering Qingdao University of Science and TechnologyQingdao 266042China

The density and viscosity of ferric chloride/trioctylmethylammonium chloride ionic liquid(rFeCl_(3)/[A336]Cl)with different molar ratios(r=0.1-0.8)of FeCl_(3) to[A336]Cl were measured at temperatures from 313.15 to 358.15 K and atmospheric pressure.The density and viscosity data were fitted by the relevant temperature variation equations,respectively.The variation of density and viscosity with temperature and r was obtained.The solubility of rFeCl_(3)/[A336]Cl to H_2S was measured at temperatures from 318.15 to 348.15 K and pressures from 0 to 150 kPa.The effects of temperature,pressure,and r on the solubility of H_(2)S were discussed.The reaction equilibrium thermodynamic model(RETM)was used to fit the H_(2)S solubility data,and the average relative error was less than 1.3%,indicating that the model can relate the solubility data well.And Henry's constant and chemical reaction equilibrium constant were obtained by the RETM fitting.The relationships of Henry's constant and chemical reaction equilibrium constant with temperature and r were analyzed.

关键词： Ionic liquids Hydrogen sulfide Solubility Henry's constant Chemical reaction equilibrium constant Model

中国家庭农场发展:现实呼唤、松江实践、方略抉择

在线全文

学校读者我要写书评

暂无评论

农业经济与管理 2024年第1期 68-75页

作者：钱忠好李友艺扬州大学商学院江苏扬州225127 浙江工商大学公共管理学院杭州310018

家庭农场作为一种新型农业经营主体,以家庭经营为内核,以适度经营规模为特征,既继承了家庭联产承包责任制下家庭经营的优点,又扬弃了土地小规模家庭经营的缺陷。松江发展家庭农场的实践表明,家庭农场是实现三权分置的有效载体,家庭农场... 详细信息

家庭农场作为一种新型农业经营主体,以家庭经营为内核,以适度经营规模为特征,既继承了家庭联产承包责任制下家庭经营的优点,又扬弃了土地小规模家庭经营的缺陷。松江发展家庭农场的实践表明,家庭农场是实现三权分置的有效载体,家庭农场组织和制度的创新,有助于中国农业实现由传统兼业小农向现代农业的转变。为促进家庭农场的健康发展,需要坚持家庭农场家庭经营原则、强化对家庭农场经营者的选择;把握好家庭农场土地经营规模的“度”、不搞“一刀切”;采取有效措施促进土地流转、为家庭农场的形成和发展创造条件;明确政府定位、做到“在位”不“越位”。

关键词：家庭农场松江对策

在线全文

学校读者我要写书评

暂无评论

我国城市轨道交通信号系统发展方向探讨

城市轨道交通研究 2024年第2期27卷 I0001-I0001,263页

作者：李中浩中国城市轨道交通协会专家与学术委员会

中国的城市轨道交通信号系统具有后发优势,除了上世纪九十年代早期建设的几条地铁线路的信号系统外,几乎全部采用CBTC(基于通信的列车控制)系统,实现了移动闭塞,这是几代轨道交通信号人梦寐以求目标。随着北京燕房线自主化的基于CBTC的F... 详细信息

中国的城市轨道交通信号系统具有后发优势,除了上世纪九十年代早期建设的几条地铁线路的信号系统外,几乎全部采用CBTC(基于通信的列车控制)系统,实现了移动闭塞,这是几代轨道交通信号人梦寐以求目标。随着北京燕房线自主化的基于CBTC的FAO(全自动运行)列车控制系统开通以后,多家国内信号供应商拥有了自主化的FAO产品,并得到了工程验证。中国城市轨道交通信号系统的发展进入了“无人(领跑)区”,我们必须自己回答,我国城市轨道交通信号系统向何处去。

关键词：城市轨道交通信号系统列车控制系统轨道交通信号地铁线路移动闭塞自主化全自动运行九十年代

分布电容对引信共线装定系统信息传输特性的影响及其优化

在线全文

学校读者我要写书评

暂无评论

兵工学报 2024年第1期45卷 319-327页

作者：李昊李豪杰原红伟岳中豪马海涛南京理工大学机械工程学院江苏南京210094 中国晋西工业集团山西太原030051 淮海工业集团有限公司山西长治046012

针对引信共线装定过程中分布电容影响装定可靠性的问题,建立基于装定器模块、能量与信息传输模块、引信电路模块的等效电路模型。分别研究在装定输出信号为高电平时和低电平时两种情况下,分布电容对共线装定系统信息传输特性的影响。得... 详细信息

针对引信共线装定过程中分布电容影响装定可靠性的问题,建立基于装定器模块、能量与信息传输模块、引信电路模块的等效电路模型。分别研究在装定输出信号为高电平时和低电平时两种情况下,分布电容对共线装定系统信息传输特性的影响。得出高电平时分布电容对共线装定系统影响较小的结论,并推导低电平时引信识别到的接收信号的低电平脉宽与分布电容的关系式。提出两种优化方法,一种利用二极管屏蔽外部因素如并入电缆引入的电容;另一种利用并联一个阻值较小电阻的方法来降低系统的时间常数,从而提高引信识别到的低电平脉宽,提高装定可靠性。经仿真和实验验证,两种方法均提高了引信识别接收信号的可靠性。

关键词：引信装定系统分布电容可靠性