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ANALYSIS ON AGRICULTRUAL INFORMATION DEMAND——Case of Jilin Province

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Chinese Geographical Science 2005年第3期15卷 281-287页

作者： ZHANG hui-min jiang hui-ming Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun 130012 P. R. China Managerial College Jilin Agricultural University Changchun 130118 P. R. China

With the rapid development of agricultural informalization in the world, the demand of agricultural information has been a focus in the international agriculture and information fields. Based on the investigation, this paper presented the four characteristics of the demand of agricultural information in China, includingregionality, seasonality, great potential demand and variation in kind and level. The factors infuencing the demand of agricultural information were analyzed by the Optimized Less Square （OLS） method. The result shows that, of all factors influcing agricultural information demand, the most important one is economy, the second is facility of information pass, and knowledge and education of user, credit of agricultural information service system and production situation follow. Taking Jilin Province as an example, this article also elaborated the agricultural information demand status, and deduced the regression model of agricultural information demand and verified it by the survey in rural Jilin.

关键词： agricultural information demand agricultural information service system Jilin Province

Patterns and causes of geographic variation in bat echolocation pulses

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Integrative Zoology 2015年第3期10卷 241-256页

作者： Tinglei jiang hui WU jiang FENG Jilin Key Laboratory of Animal Resource Conservation and Utilization Northeast Normal UniversityChangchunChina Key Laboratory for Wetland Ecology and Vegetation Restoration of National Environmental Protection Northeast Normal UniversityChangchunChina

Evolutionary biologists have a long-standing interest in how acoustic signals in animals vary geographically,because divergent ecology and sensory perception play an important role in *** comparisons are valuable in determining the factors that influence divergence of acoustic *** are social mammals and they depend mainly on echolocation pulses to locate prey,to navigate and to *** evidence shows that geographic variation of bat echolocation pulses is common,with a mean 5-10 kHz differences in peak frequency,and a high level of individual variation may be nested in this geographical ***,understanding the geographic variation of echolocation pulses in bats is very difficult,because of differences in sample and statistical analysis techniques as well as the variety of factors shaping the vocal geographic *** differences in echolocation pulses of bats generally lack latitudinal,longitudinal and elevational patterns,and little is known about vocal *** is accumulating to support the fact that geographic variation in echolocation pulses of bats may be caused by genetic drift,cultural drift,ecological selection,sexual selection and social *** studies could relate geographic differences in echolocation pulses to social adaptation,vocal learning strategies and patterns of *** addition,new statistical techniques and acoustic playback experiments may help to illustrate the causes and consequences of the geographic evolution of echolocation pulse in bats.

关键词： Chiroptera drift echolocation geographic evolution selection

Correlation analyse between thyroid hormone levels and severity of schizophrenia symptoms

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World Journal of Psychiatry 2025年第1期15卷 63-71页

作者： Qi-hui jiang Wei-Dong Gong Department of Endocrinology and Metabolism Hengyang Central HospitalHengyang 421000Hunan ProvinceChina Breast Tumor Surgical Outpatient Hengyang Central HospitalHengyang 421000Hunan ProvinceChina

BACKGROUND The imbalance of hormone levels in the body is closely related to the occurrence and progression of schizophrenia,especially thyroid *** To study the relationship between triiodothyronine(T3),thyroxine(T4),free T3(FT3),free T4(FT4),thyroid stimulating hormone(TSH)and *** In this study,100 schizophrenia patients were selected from our hospital between April 2022 and April *** clinical data were analyzed *** on the Positive and Negative Syndrome Scale(PANSS)score,patients were divided into mild(1-3 points,n=39),moderate(4 points,n=45),and severe groups(5-7 points,n=16).Additionally,55 healthy individuals served as a control *** blood samples were collected to measure T3,T4,FT3,FT4,TSH,and cortisol concentrations,analyzing their relationship with PANSS *** The serum levels of T3,FT3,FT4,TSH and cortisol in the schizophrenia group were lower than those in the control group(P<0.05).With the increase of the severity of the disease,the concentrations of T3 and T4 decreased,while the con-centrations of TSH and cortisol increased(P<0.05).The concentrations of TSH and cortisol were positively correlated with the PANSS score,while T3 and T4 were negatively correlated with the PANSS score(P<0.05).The receiver ope-rating characteristic curve results showed that T3,T4,TSH,and cortisol had good efficacy in the diagnosis of *** results showed that decreased T3 level,decreased T4 level,decreased TSH level and increased cortisol level may be independent risk factors for *** Thyroid hormone levels are associated with the severity of schizophrenia symptoms,which can provide new solutions for the diagnosis and treatment of schizophrenia.

关键词： Thyroid hormone Schizophrenia Symptom severity Positive and Negative Syndrome Scale score Cortisol

AlH_(3)as a hydrogen storage material:recent advances,prospects and challenges

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Rare Metals 2021年第12期40卷 3337-3356页

作者： Wei jiang hui Wang Min Zhu Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou510641China

Aluminum hydride(AlH_(3))is a covalently bonded trihydride with a high gravimetric(10.1 wt%)and volumetric(148 kg·m^(-3))hydrogen ***_(3)decomposes to Al and H_(2)rapidly at relatively low temperatures,indicating good hydrogen desorption kinetics at ambient ***,AlH_(3)is one of the most prospective candidates for high-capacity hydrogen storage ***,this review briefly summarizes the basic chemical and physical characteristics of AlH_(3).Then,its synthesis,dehydrogenation thermodynamics and kinetics,regeneration and methods for improving reversibility of hydriding are described with the aim of applying this material for hydrogen *** accordance with the fact that AlH_(3)is generally formed by reacting Al with H_(2)at extremely high hydrogen pressure,the high-pressure study of this hydride is discussed in ***,the advantages,weaknesses,critical technical challenges and outlook of this field are discussed.

关键词： Aluminum hydride AlH_(3) Hydrogen storage High pressure

Slip boundary conditions for rough surfaces

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Chinese Journal of Aeronautics 2023年第5期36卷 239-249页

作者： hui WU Weifang CHEN Zhongzheng jiang School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China

The velocity slip and temperature jump for a two-dimensional rough plate under hypersonic conditions were analyzed using the Direct Simulation Monte Carlo(DSMC)*** roughness was explicitly modeled by introducing various structures on the flat *** influences of relative roughness height,which involves the roughness height,roughness spacing,incoming velocity,and the degree of rarefaction,were analyzed and *** is found that with the increase of the relative roughness height,the jump temperature increases,while the slip velocity decreases *** effects of surface roughness on the slip coefficients can be attributed to the change of accommodation coefficients.A new slip model for rough surfaces was established in this paper,which accounts for the coupling effects of gas rarefaction and surface roughness,without the effort to model the surface roughness *** nitrogen flows in the microchannel,and flows over a blunt cone and an axisymmetric bi-conic body,were simulated under the modified and conventional slip boundary conditions,*** numerical solutions were validated with experimental *** can be safely concluded that compared with the traditional first-order slip boundary conditions,the modified slip model improves the accuracy of macroscopic properties,especially the heat transfer coefficient.

关键词： Direct Simulation Monte Carlo(DSMC) Slip coefficients Surface roughness Temperature jump Velocity slip

Graphene versus MoS2： A short review

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Frontiers of physics 2015年第3期10卷 49-64页

作者： jin-Wu jiang Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai University Shanghai 200072 China

Graphene and MoS2 are two well-known quasi two-dimensional materials. This review presents a comparative survey of the complementary lattice dynamical and mechanical properties of graphene and MoSs, which facilitates the study of graphene/MoS2 heterostructures. These hybrid heterostructures are expected to mitigate the negative properties of each individual constituent and have attracted intense academic and industrial research interest.

关键词： graphene molybdenum disulphide lattice dynamics mechanical properties

Study on the ignition process of a segmented plasma torch

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Plasma Science and Technology 2017年第7期19卷 63-70页

作者： Xiuquan CAO Deping YU Yong XIANG Chao LI hui jiang jin YAO College of Manufacturing Science and Engineering Sichuan University Chengdu 610065 People＇s Republic of China

Direct current plasma torches have been applied to generate unique sources of thermal energy in many industrial applications. Nevertheless, the successful ignition of a plasma torch is the key process to generate the unique source （plasma jet）. However, there has been tittle study on the underlying mechanism of this key process. A thorough understanding of the ignition process of a plasma torch will be helpful for optimizing the design of the plasma torch structure and selection of the ignition parameters to prolong the service life of the ignition module. Thus, in this paper, the ignition process of a segmented plasma torch （SPT） is theoretically and experimentally modeled and analyzed. Corresponding electrical models of different stages of the ignition process axe set up and used to derive the electrical parameters, e.g. the variations of the arc voltage and arc current between the cathode and anode. In addition, the experiments with different ignition parameters on a home-made SPT have been conducted. At the same time, the variations of the arc voltage and arc current have been measured, and used to verify the ones derived in theory and to determine the optimal ignition parameters for a particular SPT.

关键词： ignition process segmented plasma torch ignition parameters

Unsteady rotating flows of a viscoelastic fluid with the fractional Maxwell model between coaxial cylinders

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Acta Mechanica Sinica 2006年第4期22卷 301-305页

作者： Haitao Qi hui jin Department of Applied Mathematics and Statistics Institute of Applied Mathematics Shandong University at Weihai Weihai 264209 Shandong China School of Mathematics and Systematical Science Shandong University Jinan 250100 Shandong China

The fractional calculus is used in the constitutive relationship model of viscoelastic fluid. A generalized Maxwell model with fractional calculus is considered. Based on the flow conditions described, two flow cases are solved and the exact solutions are obtained by using the Weber transform and the Laplace transform for fractional calculus.

关键词： Viscoelastic fluid Unsteady flow Fractional Maxwell model Exact solution

Deviation inequalities for quadratic Wiener functionals and moderate deviations for parameter estimators

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Science China Mathematics 2017年第7期60卷 1181-1196页

作者： GAO FuQing jiang hui School of Mathematics and Statistics Wuhan University Wuhan 430072 China Hubei Key Laboratory of Computational Science Wuhan University Wuhan 430072 China Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

We study deviation inequalities for some quadratic Wiener functionals and moderate deviations for parameter estimators in a linear stochastic differential equation ***,we give some estimates for Laplace integrals of the quadratic Wiener functionals by calculating the eigenvalues of the associated HilbertSchmidt *** applying the estimates,we establish deviation inequalities for the quadratic functionals and moderate deviation principles for the parameter estimators.

关键词： quadratic Winer functional Laplace integral moderate deviations parameter estimator