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Communications in Theoretical Physics 2008年第1期49卷 239-242页

作者： liu jing-jing LUO Zhi-Quan Institute of Theoretical Physics China West Normal University Nanchong 637002 China

The electron capture of Gamow--Teller transition on iron group nuclei is investigated in a strong magnetic. field at the crusts of neutron stars. The results show that the magnetic field has only a slight effect on the electron capture rates with the range of the magnetic fields （10^9 - 10^13 G） on surfaces of most neutron stars, whereas for some magnetars whose range of the magnetic field is 10^13 - 10^18 G, the electron capture rates of most iron group nuclei would be debased greatly and may be even decreased overrun 3 orders of magnitude by the strong magnetic field.

关键词： strong magnetic field Gamow-Teller transition electron capture neutron star

Liquid metal machine is evolving to soft robotics

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Science China(Technological Sciences) 2016年第11期59卷 1793-1794页

作者： liu jing Technical Institute of Physics and Chemistry Chinese Academy of Sciences Department of Biomedical Engineering School of Medicine Tsinghua University

Making soft robots that can flexibly transform among different morphologies has long been a dream in both science and engineering *** outstanding versatile capabilities,liquid metals are opening breakthrough strategies for molding future smart soft robots that had never been anticipated before or hardly achievable by a rigid metal or conventional materials[1,2].All the evidences collected so far pointed out that,liquid metal machine is evolving via a rather quick way.

关键词：液态金属机器人人发传统材料科学性多功能

Vanadium(Ⅳ)solvent extraction enhancement in high acidity using di-(2-ethylhexyl)phosphoric acid with[Cl^(-)]present:an experimental and theoretical study

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Frontiers of Chemical Science and Engineering 2023年第1期17卷 56-67页

作者： Hong liu yi-Min Zhang jing Huang Tao liu School of Resource and Environmental Engineering Wuhan University of Science and TechnologyWuhan 430081China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources Wuhan University of Science and TechnologyWuhan 430081China Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource Wuhan University of Science and TechnologyWuhan 430081China

Separation of vanadium from black shale leaching solution at low pH is very meaningful,which can effectively avoid the generation of alkali neutralization slag and the resulting vanadium *** this study,coordination mechanism of vanadium in acid leaching solution at low pH was investigated with the intervention of chloride *** the conditions of pH 0.8,di-(2-ethylhexyl)phosphoric acid concentration of 20%,phase ratio of 1:2,and extraction time of 8 min,the vanadium extraction could reach 80.00%.The Fourier transform infrared and electrospray ionization results reveal that,despite the fact that the chloride ion in the leachate could significantly promote vanadium extraction,the chloride ion does not enter the organic phase,indicating an intriguing *** Cl^(-)-V,SO_(4)^(2-)-V,and H_(2)O-V,the V-Cl bond is longer and the potential difference between coordinate ions and vanadium is ***,Vo^(2+)gets easily desorbed with chloride ions and enter the organic *** the same time,the hydrogen ions of di-(2-ethylhexyl)phosphoric acid also enter the water phase more easily,which reduces the pH required for the extraction reaction.

关键词： vanadium black shale solvent extraction high acidity extraction

Cordyceps as potential therapeutic agents for atherosclerosis

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Journal of Integrative Medicine 2024年第2期22卷 102-114页

作者： yi Zhang Si-jing liu School of Marxism Chengdu University of Traditional Chinese MedicineChengdu 61137Sichuan ProvinceChina College of Medical Technology Chengdu University of Traditional Chinese MedicineChengdu 611137Sichuan ProvinceChina Chongqing Key Laboratory of Sichuan-Chongqing Co-construction for Diagnosis and Treatment of Infectious Diseases with Integrated Chinese and Western Medicine Chengdu University of Traditional Chinese MedicineChengdu 611137Sichuan ProvinceChina

Atherosclerosis is a leading cause of mortality and morbidity *** the challenges in managing atherosclerosis,researchers continue to investigate new treatments and complementary *** is a traditional Chinese medicine that has recently gained attention as a potential therapeutic agent for *** studies have demonstrated the effectiveness of cordyceps in treating atherosclerosis through various pharmacological actions,including anti-inflammatory and antioxidant activities,lowering cholesterol,inhibiting platelet aggregation,and modulating apoptosis or autophagy in vascular endothelial ***,the current misuse of the terms cordyceps and Ophiocordyceps sinensis has caused confusion among researchers,and complicated the current academic research on *** review focuses on the chemical composition,pharmacological actions,and underlying mechanisms contributing to the anti-atherosclerotic effects of cordyceps and the mycelium of Ophiocordyceps *** review provides a resource for the research on the development of new drugs for atherosclerosis from cordyceps.

关键词： Atherosclerosis Cordyceps Ophiocordyceps sinensis

Impact of effective stress on permeability for carbonate fractured-vuggy rocks

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第3期16卷 942-960页

作者： Ke Sun Huiqing liu Juliana y.Leung jing Wang yabin Feng Renjie liu Zhijiang Kang yun Zhang State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China School of Mining&Petroleum Engineering University of AlbertaEdmontonT6G 1H9Canada SINOPEC Petroleum Exploration and Production Research Institute Beijing100083China

To gain insight into the flow mechanisms and stress sensitivity for fractured-vuggy reservoirs,several core models with different structural characteristics were designed and fabricated to investigate the impact of effective stress on permeability for carbonate fractured-vuggy rocks(CFVR).It shows that the permeability performance curves under different pore and confining pressures(*** stress conditions)for the fractured core models and the vuggy core models have similar change *** ranges of permeability variation are significantly wider at high pore pressures,indicating that permeability reduction is the most significant during the early stage of development for fractured-vuggy *** each obtained effective stress coefficient for permeability(ESCP)varies with the changes in confining pressure and pore pressure,the effective stresses for permeability of four representative CFVR show obvious nonlinear characteristics,and the variation ranges of ESCP are all between 0 and ***,a comprehensive ESCP mathematical model considering triple media,including matrix pores,fractures,and dissolved vugs,was *** is proved theoretically that the ESCP of CFVR generally varies between 0 and ***,the regression results showed that the power model ranked highest among the four empirical models mainly applied in stress sensitivity characterization,followed by the logarithmic model,exponential model,and binomial *** concept of“permeability decline rate”was introduced to better evaluate the stress sensitivity performance for CFVR,in which the one-fracture rock is the strongest,followed by the fracture-vug rock and two-horizontalfracture rock;the through-hole rock is the *** general,this study provides a theoretical basis to guide the design of development and adjustment programs for carbonate fractured-vuggy reservoirs.

关键词： Effective stress Permeability Carbonate fractured-vuggy rocks Structure characteristics Stress sensitivity

(Q)SAR modelling of nanomaterial toxicity:A critical review

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Particuology 2015年第4期13卷 1-19页

作者： Ceyda Oksel Cai y.Ma jing J.liu Terry Wilkins Xue Z.Wang Institute of Particle Science and Engineering School of Chemical and Process EngineeringUniversity of Leeds School of Chemistry and Chemical Engineering South China University of Technology

There is increasing recognition that some nanomaterials may pose a risk to human health and the environment. Moreover, the industrial use of the novel engineered nanomaterials （ENMs） increases at a higher rate than data generation for hazard assessment; consequently, many of them remain untested. The large number of nanomaterials and their variants （e.g., different sizes and coatings） requiring testing and the ethical pressure towards nonanimal testing means that in a first instance, expensive animal bioassays are precluded, and the use of（quantitative） structure-activity relationships （（Q）SARs） models as an alter- native source of （screening） hazard information should be explored. （Q）SAR modelling can be applied to contribute towards filling important knowledge gaps by making best use of existing data, prioritizing the physicochemical parameters driving toxicity, and providing practical solutions for the risk assessment problems caused by the diversity of ENMs. This paper covers the core components required for successful application of （Q）SAR methods to ENM toxicity prediction, summarizes the published nano-（Q）SAR studies, and outlines the challenges ahead for nano-（Q）SAR modelling. It provides a critical review of （1） the present availability of ENM characterization/toxicity data, （2） the characterization of nanostructures that meet the requirements for （Q）SAR analysis, （3） published nano-（Q）SAR studies and their limitations, （4） in silico tools for （Q）SAR screening of nanotoxicity, and （5） prospective directions for the development of nano-（Q）SAR models.

关键词： Nanomaterial toxicity Nanotoxicology QSAR NanoSAR In silico toxicity prediction

橙皮苷、百里香酚、迷迭香酸及其联合添加对肉仔鸡肠道免疫和抗氧化功能的影响

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南京农业大学学报 2025年第1期48卷 171-179页

作者：刘瑞雪丁雪东党苗苗汪晶朱伟云南京农业大学动物科技学院/动物消化道营养国家级国际联合研究中心江苏南京210095

[目的]试验旨在研究橙皮苷、百里香酚、迷迭香酸及其联合添加对肉仔鸡肠道免疫和抗氧化功能的影响。[方法]选用240只1日龄爱拔益加肉鸡,随机分为5组,每组6个重复,每个重复8只。5组试验鸡分别饲喂基础饲粮(对照组)以及在基础饲粮中添加40... 详细信息

[目的]试验旨在研究橙皮苷、百里香酚、迷迭香酸及其联合添加对肉仔鸡肠道免疫和抗氧化功能的影响。[方法]选用240只1日龄爱拔益加肉鸡,随机分为5组,每组6个重复,每个重复8只。5组试验鸡分别饲喂基础饲粮(对照组)以及在基础饲粮中添加40 mg·kg^(-1)橙皮苷(橙皮苷组)、40 mg·kg^(-1)百里香酚(百里香酚组)、20 mg·kg^(-1)迷迭香酸(迷迭香酸组)和 40 mg·kg^(-1)橙皮苷+40 mg·kg^(-1)百里香酚+20 mg·kg^(-1)迷迭香酸(联合组),试验期42 d。[结果]与对照组相比,联合组肉仔鸡的法氏囊指数显著增加(P<0.05),血清中脂多糖(LPS)、肿瘤坏死因子α、干扰素γ和白细胞介素1β(IL-1β)、免疫球蛋白M的含量显著降低(P<0.05),回肠黏膜中细胞因子信号抑制因子1(SOCS1)、核因子E2相关因子(Nrf2)、醌氧化还原酶(NQO1)、谷胱甘肽过氧化物酶(GPX4)和超氧化物歧化酶(SOD1)等基因mRNA表达水平以及过氧化氢酶活性显著增加(P<0.05),回肠和盲肠中丙二醛含量显著降低(P<0.05),盲肠黏膜中SOCS1、Nrf2、SOD1和GPX4 mRNA表达水平和谷胱甘肽过氧化物酶(GSH-Px)活性显著增加(P<0.05);橙皮苷组肉仔鸡血清中LPS、IL-1β的含量显著降低(P<0.05),回肠黏膜Nrf2和SOCS1 mRNA表达水平显著增加(P<0.05),盲肠黏膜的GSH-Px活性显著增强(P<0.05);百里香酚组肉仔鸡血清中LPS、IL-1β含量显著降低(P<0.05),回肠黏膜中Nrf2、NQO1和SOCS1的mRNA表达水平显著增加(P<0.05),盲肠黏膜中GPX4的mRNA表达水平和GSH-Px活性显著增加(P<0.05);迷迭香酸组肉仔鸡血清中LPS、IL-1β含量显著降低(P<0.05),回肠黏膜中Nrf2、NQO1、SOD1和SOCS1 mRNA表达水平显著增加(P<0.05)。[结论]饲料中联合添加橙皮苷、百里香酚和迷迭香酸能够增加肉仔鸡法氏囊指数,降低血清中细胞因子含量,提高机体和黏膜的免疫能力,增强肠道黏膜的抗氧化能力。

关键词：肉仔鸡橙皮苷百里香酚迷迭香酸抗氧化功能免疫功能

Component reconstitution-driven photoelectrochemical sensor for sensitive detection of Cu2+ based on advanced CuS/CdS p-n junction

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Science China Chemistry 2019年第12期62卷 1725-1731页

作者： jing liu ying liu Wei Wang jing Li Xinyuan yu Qinshu Zhu Zhihui Dai Jiangsu Collaborative Innovation Center of Biomedical Functional Materials School of Chemistry and Materials ScienceNanjing Normal University

The rational design of robust photoactive material and artful sensing strategy are vital for the construction of an ultrasensitive photoelectrochemical（PEC） sensor. Although great progress has been made in PEC sensing, the resultant detection performances and adoptable sensing strategies are still limited. Herein, through the design of a subtle component reconstitution strategy, an ultrasensitive PEC sensor is developed for the detection of Cu2+ based on advanced Cu S/Cd S nanohybrids（NHs）.This proposed sensor shows superior sensing performances with a low detection limit of 0.1 n M and a wide detection range from0.2 n M to 60 μM due to the formation of p-n junction between Cu S and Cd S and the component transformation of Cd S to CuxS（x=1,2）. Moreover, such PEC sensor also displays goodish results for monitoring the Cu2+released from apoptotic He La cells in vitro. This idea of component reconstitution provides a new paradigm for the design of advanced PEC sensors.

关键词： component reconstitution photoelectrochemical p-n junction CuS/CdS hybrids Cu^2+

Investigations on the Improving Aerodynamic Performances of Last Stage Steam Turbine and Exhaust Hood under Design and Off Design Conditions

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Journal of Thermal Science 2015年第5期24卷 468-477页

作者： FU jing-Lun liu Jian-Jun Key Laboratory of Advanced Energy and Power Institute of Engineering Thermophysics

The purpose of this paper is to improve the aerodynamic performances of the last stage turbine and the exhaust hood of a 600MW steam turbine under design and off design conditions. During operation, strong flow interactions between the turbine and the exhaust hood impose influences on the flow behavior in the hood and lead to the unsatisfactory aerodynamic performance of the turbine and exhaust hood. So the exhaust hood has the potential to be improved in terms of aerodynamic efficiency. Considering the flow interactions between the turbine and the exhaust hood, the profiles of the diffuser end-wall were optimized. The coupled model turbine and model exhaust hood calculations and experiments were carried out to validate the effects of the optimization. Model experiments show that the design modifications resulted in a substantial increase in the overall pressure recovery coefficient. The flow and aerodynamic performances of the full-scale last stage turbine and full-scale exhaust hood were simulated to explore the flow physics alterations to the modification of diffuser geometry. The wet steam was selected as the flow medium. The actual flow fields trader different operation conditions were analyzed.

关键词： steam turbine exhaust hood full scale coupling flow

In-situ generation of poly(quinolizine)s via catalyst-free polyannulations of activated diyne and pyridines

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Science China Chemistry 2022年第4期65卷 789-795页

作者： Benzhao He Jiachang Huang jing Zhang Xinyue liu Dong Wang Herman H.y.Sung yajun liu Anjun Qin Jacky W.y.Lam Ben Zhong Tang Center for Advanced Materials Research Science and Technology Experimental PlatformAdvanced Institute of Natural SciencesBeijing Normal University at ZhuhaiZhuhai 519085China Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstructionand Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsThe Hong Kong University of Science&TechnologyKowloonHong KongChina Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Department of Laboratory Medicine Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesCenter for Aggregation-Induced EmissionSouth China University of TechnologyGuangzhou 510640China HKUST-Shenzhen Research Institute Shenzhen 518057China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172China

The development of new polymerization routes to afford N-heterocyclic polymers is of vital importance and highly desired for various practical applications. Herein, a facile and efficient polyannulation reaction of dual-activated alkyne and pyridines was developed to construct novel N-heterocyclic poly(quinolizine)s. This polymerization can proceed smoothly under catalystfree conditions with 100% atom utilization to furnish poly(quinolizine)s with high molecular weights(up to 34,100) and welldefined structures in acceptable yields. The resulting polymers show good solubility, high thermal stability and strong red emission. Moreover, the prepared poly(quinolizine)s exhibit low cytotoxicity and can selectively label lysosomes in live *** the remarkable advantages of readily available raw materials, mild polymerization conditions, atom economy, and excellent product performance, this new and efficient polymerization tool will open up enormous opportunities for preparing functional N-heterocyclic polymers.

关键词： polyannulation activated alkyne N-heterocyclic polymers poly(quinolizine)s bioimaging

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