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Synthesis and Properties of a Heteronuclear Ag(Ⅰ)/Ni(Ⅱ) Complex

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Chemical Research in Chinese Universities 2006年第3期22卷 283-286页

作者： WANG jiang-yun gu Wen WANG Wen-zhen LIU Xin LIAO Dai-zheng Department of Chemistry Nankai University Tianjin 300071 P. R. China

A complex, Ni （en）2Ag3 （CN） s （ en =ethylenediamine）, was obtained through the reaction of [ Ag （ CN ）2 ]^- units with Ni II -diamine cation C Ni （en）2]^2＋, and the structure was determined by single crystal X-ray diffraction. It is indicated that the complex has a 3D architecture through the silver-silver interactions and the bridging eyano groups. This complex displays interesting luminescent properties caused by argentophilieity at room temperature in solid state.

关键词： Single crystal X-ray diffraction Silver-silver interaction Argentophilieity luminescent property

Direct Nitrous Oxide Emissions Related to Fertilizer-Nitrogen, Precipitation, and Soil Clay Fraction: Empirical Models

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Atmospheric and Oceanic Science Letters 2015年第5期8卷 277-282页

作者： ZHANG Wei gu jiang-Xin ZHENG Xun-Hua State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences College of Natural Resources and Environment Northwest A & F University

Direct nitrous oxide(N2O) emissions(DNEs) from croplands are required in national inventories of greenhouse gases. The Intergovernmental Panel on Climate Change(IPCC) guidelines provide an approach using direct emission factors(EFds) to estimate DNEs, which are constants for large regions. The goal of this paper is to establish empirical models to account for the temporal and spatial variations of EFds, which, apart from the nitrogen addition rate, also vary with a range of environmental factors, so as to enhance the accuracy of regional/national DNE estimates. Therefore, the seasonal/annual DNEs(n = 71) from upland croplands, which are the differences in N2 O emissions between fields with and without fertilizer-nitrogen addition, were used to statistically relate DNEs to regulating factors including the fertilizer-nitrogen addition rate(FN), and environmental(climate and soil) factors. The multivariate stepwise linear regression results showed positive combined effects of FN and clay fraction on DNEs(R2 = 0.61, p < 0.001). Furthermore, the nonlinear regression of FN, precipitation, and clay fraction was also adopted for prediction(R2 = 0.50, p < 0.001). Validation with an independent dataset(n = 31) suggested that both models were better predictors of DNEs than the IPCC model, which only depends on FN. These empirical models may provide simple but reliable approaches for compiling regional/national, and even global inventories of DNEs from croplands. However, both models were restricted to a limited sample size. Understandably, more field observations are still required to further validate the global applicability of these simple approaches.

关键词： nitrous oxide direct emissions empirical model nit

A New Approach for Estimating Kinetic Luminosity of Jet in AGNs

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Chinese Journal of Astronomy and Astrophysics 2008年第1期8卷 39-49页

作者： Mao-Li Ma Xin-Wu Cao Dong-Rong jiang Min-Feng gu Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030

The Konigl inhomogeneous jet model can successfully reproduce most observational features of jets in active galactic nuclei （AGN）, when suitable physical parameters are adopted. We improve Konigl＇s calculations on the core emission from the jet with a small viewing angle θ0 - φ （φ is half opening angle of the conical jet）. The proper motion of the jet component provides a constraint on the jet kinematics. Based on the inhomogeneous jet model, we use the proper motion data of the jet component to calculate the minimal kinetic luminosity of the jet required to reproduce the core emission measured by the very-long- baseline interferometry （VLBI） for a sample of BL Lac objects. Our results show that the minimal kinetic luminosity is slightly higher than the bolometric luminosity for most sources in the sample, which implies that radiatively inefficient accretion flows （RIAFs） may be in those BL Lac objects, or/and the properties of their broad-line regions （BLRs） are significantly different from flat-spectrum radio-loud quasars.

关键词： galaxies jet -kinematics and dynamics theory - radiation mechanisms nonthermal-BL Lac objects general

Circadian disturbance induces erectile dysfunction by impairing endothelial function

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Asian Journal of Andrology 2024年第2期26卷 205-211页

作者： Tao Li Yi-Ting jiang Xin-Zhu Qi Peng Chen Jun-Hao Zhang Fu Luo Jun Qiao jiang gu guang-Shi Du Qiang Wang Department of Urology Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004China Department of Urology Guizhou Provincial People's HospitalGuiyang 550002China Department of Otorhinolaryngology Affiliated Hospital of Guizhou Medical UniversityGuiyang 550004China guizhou Institute for Food and Drug Control Guiyang 550004China Department of Reproductive Center Guizhou Provincial People's HospitalGuiyang 550002China Translational Medicine Research Center of guizhou Medical University Guiyang 550025China

In order to explore the impact of circadian disturbance on erectile function,we randomly divided 24 adult male rats into groups of control(light on at 8:00 *** off at 8:00 p.m.),dark/dark(DD;constant dark),light/light(LL;constant light),and shift dark/light(DL;light off at 8:00 *** on at 8:0o p.m.).Four weeks later,erectile function was measured and corpora cavernosa were harvested for *** maximum intracavernous pressure(mlcP)and mCP/mean arterial pressure(MAP)ratio in the DD,LL,and DL groups were significantly lower than that in the control *** LL and DL groups showed significantly attenuated endothelial nitric oxide synthase(eNOS),while DD,LL,and DL showed reduced neuronal nitric oxide synthase(nNOS)at both mRNA and protein *** production of nitric oxide(NO)and cyclic guanosinemonophosphate(cGMP)was inhibited by altered light/dark cycles to varying *** disturbance impaired endothelial function and contributed to erectile *** the core circadian elements,mRNA expression of circadian locomotor output cycles kaput(Clock)and brain/muscle aryl-hydrocarbon receptor nuclear translocator-like protein 1(Bmal1)was elevated in the DL group,but their protein expression was not significantly ***,LL,and DL increased period 1(Per1)and Per3 levels,while LL and DL increased PER1 *** significant difference was found for Per2levels,and PER2 and PER3 concentrations were not significantly ***,LL and DL significantly increased cryptochrome-1(CRY1)and CRY2 at both mRNA and protein *** altered light/dark rat model showed that circadian disturbance contributed to erectile dysfunction probably by impairing endothelial ***,the core circadian elements were detected in the corpora cavernosa,but these were ***,which circadian element regulates erectile function and how it works need further analysis.

关键词： circadian disturbance endothelial function erectile function light/dark cycle NO/cGMP

Revealing essence of magnetostructural coupling of Ni-Co-Mn-Ti alloys by first-principles calculations and experimental verification

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Rare Metals 2022年第6期41卷 1933-1947页

作者： Zi-Qi guan Jing Bai Yu Zhang jiang-Long gu Xin-Jun jiang Xin-Zeng Liang Run-Kai Huang Yu-Dong Zhang Claude Esling Xiang Zhao Liang Zuo Key Laboratory for Anisotropy and Texture of Materials School of Material Science and EngineeringNortheastern University.Shenyang 110819China School of Resources and Materials Northeastern University at QinhuangdaoQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004.China Hebei Provincial Laboratory for Dielectric and Electrolyte Functional Materials.Qinhuangdao 066004 China Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux.University of Lorraine Metz 57045France

In this work,the effects of Co doping on the magnetostructural coupling transformation of Ni_(50-x)Co_(x)Mn_(50-y)Ti_(y)(x=0-15,y=12.5-15)Heusler alloys were systematically investigated through the first-princi-ples calculations and experimental *** cal-culation result indicates that the doped Co atoms prefer to occupy the Ni *** Co atoms tend to flock together in terms of the lowest energy *** the formation energy of the austenite is higher than that of the martensite,the alloys will undergo martensitic transfor-mation for the Ni_(50-x)Co_(x)Mn_(37.5)Ti_(12.5)alloys(x=0-12.5).The magnetostructural coupling point of Ni_(50-x)Co_(x)Mn_(37.5)Ti_(12.5)alloys is predicted in the vicinity of x=*** on the computational composition Ni_(37.5)Co_(12.5)Mn_(37.5)Ti_(12.5),the Ni_(36)Co_(14)Mn_(36)Ti_(14)alloy with magnetostructural coupling near room temperature was experimentally developed by simultaneously increasing the Ti and Co *** largest magnetization change(ΔM)and magnetic entropy changes(ΔS_(m))obtained under magnetic field of 5 T for the martensitic transformation in the Ni_(36)Co_(14)Mn_(36)Ti_(14) alloy are about 87.6 A·m^(2)·kg^(-1)and 21 J·kg^(-1)·K^(-1),*** fracture strength and strain for non-textured polycrystalline Ni_(36)Co_(14)Mn_(36)Ti_(14)alloy reach 953 MPa and 12.3%,*** results show that the alloy not only possesses a large magne-tocaloric effect but also has excellent mechanical *** addition,the 6 M modulated martensite is evidenced in the Ni-Co-Mn-Ti alloys via transmission electron microscopy technique.

关键词： Ni-Co-Mn-Ti First-principles calculations Martensitic transformation Magnetostructural coupling Mechanical properties

Elevated levels of fructosamine are independently associated with SARS-CoV-2 reinfection:A 12-mo follow-up study

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World Journal of Diabetes 2022年第7期13卷 543-552页

作者： Xiao-Yan Huang Li-Juan Yang Xiang Hu Xing-Xing Zhang Xiao gu Lin-Jia Du Zhi-Ying He Xue-jiang gu Department of Endocrine and Metabolic Disease The First Affiliated Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina Department of Endocrine and Metabolic Disease Yueqing People’s HospitalAffiliated Hospital of Wenzhou Medical UniversityWenzhou 325600Zhejiang ProvinceChina

BACKGROUND The association between blood levels of fructosamine(FMN)and recurrent coronavirus disease 2019(COVID-19)is currently *** To investigate a prospective relationship between blood levels of FMN and severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)*** A total of 146 Chinese hospitalized patients infected with SARS-CoV-2 were consecutively collectively recruited and followed from January 2020 to May *** of COVID-19 and SARS-CoV-2 reinfection was based on the diagnostic criteria and treatment protocol in *** levels of FMN were determined in blood and divided into tertiles based on their distribution in the cohort of COVID-19 ***-adjusted hazard ratios(HRs)with 95%confidence intervals(CIs)were estimated for SARS-CoV-2 reinfection across the tertiles of FMN levels.A Cox regression model was used to generate the HR for SARS-CoV-2 reinfection in the participants in the top tertile of FMN levels compared with those at the ***-free survival was used as the time variable,and relapse was used as the state variable,adjusted for age,gender,influencing factors such as diabetes mellitus,hypertension,and corticosteroid therapy,and clinical indexes such as acute liver failure,acute kidney failure,white blood cell(WBC)count,C-reactive protein,prognostic nutritional index(PNI),and blood ***-Meier analysis with log-rank tests was used to compare the survival rate between patients with elevated FMN levels(FMN>1.93 mmol/L,the top tertile)and those with nonelevated *** Clinical data for the 146 patients with confirmed COVID-19[age 49(39-55)years;49%males]were *** patients had SARS-CoV-2 *** SARS-CoV-2 reinfection rate in patients with elevated FMN levels was significantly higher than that in patients with nonelevated FMN(17%vs 3%;P=0.008)at the end of the 12-mo *** adjustments for gender,age,diabetes mellitus,hypertension,corticosteroid therapy,

关键词： Fructosamine COVID-19 Reinfection Blood

STRATEGY OF MAIZE′S CONCENTRATING TO ADVANTAGE AREAS IN JILIN PROVINCE

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Chinese Geographical Science 2003年第4期13卷 378-382页

作者： jiang Hui-ming,gu Li-li(Managerial College,Jilin Agricultural University,Changchun 130118,P. R. China) Managerial College Jilin Agricultural University Changchun P. R. China

Jilin Province is one of the main grain-producing provinces of China,which has dominant position in maize production,by the view of its advantages in policy,location,breed and market. And after entering WTO,some measures have been taken to enhance maize competitive ability. But there are some difficulties in concentrating production to maize advantaged areas. This paper expounds the basis that Jilin Province becomes the advantage area of maize,analyzes the problems and puts forward the supporting policy. Some strategic measures are proposed,as developing comparable advantages,carrying out the strategy of un-equilibrium development and cultivating advantaged product areas of maize to rapidly improve the international competitive ability and productivity of maize in Jilin Province,cast the agricultural predicament off and promote the agricultural development into a new stage.

关键词： maize advantage area concentration Jilin province

Surgical treatment of posttraumatic foreign bodies in the heart or great vessels

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Chinese Medical Journal 2006年第23期119卷 2018-2020页

作者： jiang Chun-li gu Tian-xiang WANG Chun Department of Cardiac Surgery First Hospital of China MedicalUniversity Shenyang 110001 China

Posttraumatic foreign bodies in the heart or great vessels is rare, which may cause cardiac tamponade, bleeding, shock, infection, embolism, arrhythmia, valve dysfunction, etc.13 The foreign bodies can be removed by surgery or percutaneous intervention.4 In this report we reviewed our experience in managing posttraumatic foreign bodies in 13 patients at our institution from 1992 to 2002.

关键词： thoracic injuries heart injuries foreign bodies blood vessels vascular surgical procedures

Unraveling magnetic properties and martensitic transformation in Mn-rich Ni-Mn-Sn alloys:first-principles calculations and experiments

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Rare Metals 2024年第4期43卷 1769-1785页

作者： Yu Zhang Jing Bai Ke-Liang guo Jia-Xin Xu jiang-Long gu Nicola Morley Qui-Zhi Gao Yu-Dong Zhang Claude Esling Xiang Zhao Liang Zuo Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and EngineeringNortheastern UniversityShenyang110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao066004China Department of Material Science and Engineering University of SheffieldSheffieldS13JDUK State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004China Laboratoire d’Étude des Microstructures Et de Mécanique des Matériaux University of Lorraine57045MetzFrance

We have investigated the phase stability,magnetic properties,and martensitic transformation thermodynamics/kinetics of the Ni_(24-x)Mn_(18+x+y)Sn_(6-y)(x,y=0,1,2)system by combining the first-principles calculations and *** calculation results show that the optimized lattice parameters are consistent with the experimental ***,we obtain the relation equation for the austenite formation energy(E_(form-A))and Mn content(X_(Mn)):E_(form-A)=507.358X_(Mn)-274.126,as well as for the six-layer modulated(6M)martensite formation energy(E_(form-6M))and Ni content(X_(Ni)):E_(form-6M)=-728.484X_(Ni)+*** ternary phase diagram of the total magnetic moment was *** excess Mn will reduce the total magnetic moment of 6M(Mag6M)and non-modulated(NM)(MagNM)martensites,with the following equations relating the total magnetic moment and Mn content:Mag_(6M)=-15.905X_(Mn)+7.902and Mag_(NM)=-14.781X_(Mn)+7.411,while the effect on austenite is *** variation of total magnetic moment is mainly dominated by the Mn atomic magnetic *** 3d electrons of Mn_(Sn)(Mn at Sn sublattice)play an important role in magnetic properties from the perspective of the electronic density of *** on the thermodynamics of martensitic transformation,the alloys will likely undergo austenite?6M?NM transformation *** the thermodynamic and kinetic results,the martensitic transformation temperature decreases with x increasing and increases with y *** results are expected to provide reference for predicting the phase stability and magnetic properties of NiMn-Sn alloys.

关键词： Ni-Mn-Sn First-principles calculations Martensitic transformation Magnetic property Kinetics