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高等农业院校教师参与农村科技服务的意愿及影响因素研究

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兵团教育学院学报 2025年第1期35卷 47-55页

作者：刘芬熊春林周曦蓉湖南农业大学东方科技学院湖南长沙410128 湖南农业大学公共管理与法学学院湖南长沙410128

从教师的个体特征、家庭特征、学科特征、参与动机、参与机会、参与能力6个维度提出研究假设,依据6所高等农业院校578名教师的调查数据,采用二元Logistic模型实证研究高等农业院校教师参与农村科技服务的意愿及影响因素。结果表明:表示... 详细信息

从教师的个体特征、家庭特征、学科特征、参与动机、参与机会、参与能力6个维度提出研究假设,依据6所高等农业院校578名教师的调查数据,采用二元Logistic模型实证研究高等农业院校教师参与农村科技服务的意愿及影响因素。结果表明:表示愿意参与农村科技服务的教师占72.7%;教师参与意愿受到教师的专业、家人支持力度、所在学科享有社会声誉与团队协作紧密等自身特征,获得职称晋升、社会赞誉、实现人生价值等参与动机,激励制度完善、组织体系健全、基地平台良好等参与机会,以及市场驾驭、沟通交往、自我调节等参与能力的影响。对此,应聚焦高等农业院校教师的实际需求,充分激发其内在动机,积极创造良好的机会,有效培养其综合能力,以提高教师参与农村科技服务的意愿,促使高等农业院校有效肩负起新时代科教兴农与农业农村现代化的使命担当。

关键词：高等农业院校教师参与意愿影响因素二元Logistic 科教兴农

RNAi-mediated transgenic rice resistance to Rice stripe virus

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Journal of Integrative Agriculture 2016年第11期15卷 2539-2549页

作者： LI Li GUO Cheng wang Biao ZHOU Tong LEI Yang DAI Yu-hua HE Wen LIANG chun wang xi-feng State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural Sciences Department of Biology Miami University Institute of Plant Protection Jiangsu Academy of Agricultural Sciences Department of Computer Science and Software Engineering Miami University

Rice stripe virus（RSV） often causes severe rice yield loss in temperate regions of East Asia. Although the correlation of small interfering RNAs（si RNAs） with transgenic virus resistance of plants using RNA interference（RNAi） is known for decades, no systematical research has been done on the profiling of si RNAs from a genomic scale. Our research is aiming to systematically study the RNAi impact in RSV-resistant transgenic rice, which was generated by introducing an inverted repeat construct that targets RSV nucleocapsid protein（NCP） gene. In this paper, three independent RSV-retsistant transgenic rice lines were generated, their stable integration of the T-DNA fragment and the expression of si RNAs were confirmed by Southern blotting and Northern blotting analyses, and the majority of si RNAs were in lengths of 21, 22, and 24 nucleotides（nt）, which have validated a connection between the presence of the RSV NCP homologous si RNAs and the RSV resistance in those transgenic rice lines. In one of these transgenic lines（T4-B1）, the T-DNA fragment was found to have been inserted at chromosome 1 of the rice genome, substituting the rice genome fragment from 32 158 773 to 32 158 787 nt. Bioinformatics analysis of small RNA-Seq data on the T4-B1 line also confirmed the large population of NCP-derived si RNAs in transgenic plants, and the RSV-infected library（T4-B1-V） possessed more si RNAs than its mock inoculated libraries（T4-B1-VF）, these results indicating the inverted repeat construct and RSV could introduce abundance of si RNAs in transgenic rice. Moreover, a varied expression level of specific si RNAs was found among different segments of the NCP gene template, about 47% of NCP-derived si RNAs reads aligned with the fragment from 594 to 832 nt（239 nt in length） in NCP gene（969 nt in length） in the T4-B1-V, indicating a potential usage of hotspot regions for RNAi silencing in future research. In conclusion, as the first study to address the si RNA profile in RSV-resi

关键词： Rice stripe virus(RSV) transgenic rice deep sequencing siRNA resistance

Acute liver failure in Chinese children:a multicenter investigation

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Hepatobiliary & Pancreatic Diseases International 2014年第3期13卷 276-280页

作者： Pan Zhao chun-Ya wang Wei-Wei Liu xi wang Li-Ming Yu Yan-Rong Sun Liver Failure Therapy and Research Center Beijing 302 Hospital (PLA 302 Hospital) Emergency Department Beijing Anzhen Hospital Capital Medical University Intensive Care Unit Emergency Department General Hospital of PLA Postgraduate Division Academy of Military Medical Science Medical Administration Department Changhai Hospital Second Military Medical University Medical Administration Department General Hospital of Jinan Military Region Medical Administration Department General Hospital of Lanzhou Military Region

BACKGROUND: Currently, no documentation is available regarding Chinese children with acute liver failure(ALF). This study was undertaken to investigate etiologies and outcomes of Chinese children with ***: We retrospectively enrolled 32 pediatric patients with ALF admitted in five hospitals in different areas of China from January 2007 to December 2012. The coagulation indices, serum creatinine, serum lactate dehydrogenase,blood ammonia and prothrombin activity were analyzed; the relationship between these indices and mortality was evaluated by multivariate ***: The most common causes of Chinese children with ALF were indeterminate etiology(15/32), drug toxicity(8/32),and acute cytomegalovirus hepatitis(6/32). Only 1 patient(3.13%)received liver transplantation and the spontaneous mortality of Chinese children with ALF was 58.06%(18/31). Patients who eventually died had higher baseline levels of international normalized ratio(P=0.01), serum creatinine(P=0.04), serum lactate dehydrogenase(P=0.01), blood ammonia(P<0.01) and lower prothrombin activity(P=0.01) than those who *** analysis showed that the entry blood ammonia was the only independent factor significantly associated with mortality(odds ratio=1.069, 95% confidence interval 1.023-1.117,P<0.01) and it had a sensitivity of 94.74%, a specificity of 84.62%and an accuracy of 90.63% for predicting the death. Based on the established model, with an increase of blood ammonia level,the risk of mortality would increase by 6.9%.CONCLUSIONS: The indeterminate causes predominated in the etiologies of ALF in Chinese children. The spontaneous mortality of pediatric patients with ALF was high, whereas the proportion of patients undergoing liver transplantation was significantly low. Entry blood ammonia was a reliable predictor for the death of pediatric patients with ALF.

关键词： acute liver failure children etiology mortality prognosis

A Method for Effective Population Transfer in U Vapor with Doppler Effect and Collision

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Chinese Physics Letters 1996年第8期13卷 590-593页

作者： NING xi-jing JING chun-yang LIN Fu-cheng Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800

We proposed a method for effective population transfer in an atomic vapor with Doppler effect and *** this method,we have demonstrated that an efficient population transfer occurs in ^(238)U vapor produced in a hollow-cathode discharge tube.A numerical calculation with density matrix agrees well with our experimental result and indicates that the method can be used to raise the efficiency of atomic vapor isotope separation.

关键词： separation method collision

Coupling interface constructions of FeOOH/NiCo_(2)S_(4)by microwave-assisted method for efficient oxygen evolution reaction

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Rare Metals 2023年第6期42卷 1847-1857页

作者： Ming-Liang Guo Zhi-Yu Wu Miao-Miao Zhang Zi-Jian Huang Ke-xi Zhang Bing-Rong wang Jin-chun Tu State Key Laboratory of Marine Resource Utilization in the South China Sea College of Materials Science and EngineeringHainan UniversityHaikou570228China School of Science Hainan UniversityHaikou570228China

The oxygen evolution reaction(OER) with slow kinetics is the rate-limiting step of electrochemical water splitting.A reasonable construction of interface nanostructures is the key to improving the OER efficiency and durability of non-noble metal *** this study,a FeOOH/NiCo_(2)S_(4) core-shell nanorod array with abundant heterogeneous interfaces and high density of active sites was successfully prepared by a microwave-as sis ted *** research and theoretical calculations show that the abundant strong coupling Ni/Co-S-Fe interface helps in adjusting the electronic structure of the material surface,optimizing the adsorption energy of the intermediate,and realizing an efficient catalytic *** as-synthesized FeOOH/NiCo_(2)S_(4)/NF composite electrode exhibited lower overpotential(198 mV) and Tafel slope(62 mV·dec^(-1)) at a current density of 10 mA·cm^(-2)and excellent stability(approximately 100% retention after100 h) than the NiCo_(2)S_(4)/nickel foam(NF).In conclusion,constructing heterojunctions with complementary active materials is an effective strategy to design efficient and robust OER electrocatalysts.

关键词： Transition metal sulfides FeOOH Interface structure Adsorption energy Oxygen evolution

Study of the relationship between fractures and highly productive shale gas zones, Longmaxi Formation, Jiaoshiba area in eastern Sichuan

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Petroleum Science 2018年第3期15卷 498-509页

作者： Yu-Feng Li Wei Sun xi-Wu Liu Dian-Wei Zhang Yan-chun wang Zhi-Yuan Liu School of Geophysics and Information Technology China University of Geoscience Research Institute of Petroleum Exploration and Development Sinopec

Shale fractures are an important factor controlling shale gas enrichment and high-productivity zones in the Longmaxi Formation, Jiaoshiba area in eastern Sichuan. Drilling results have, however, shown that the shale fracture density does not have a straightforward correlation with shale gas productivity. Based on logging data, drilling and seismic data, the relationship between shale fracture and shale gas accumulation is investigated by integrating the results of experiments and geophysical methods. The following conclusions have been drawn：（1） Tracer diffusion tests indicate that zones of fracture act as favorable channels for shale gas migration and high-angle fractures promote gas accumulation.（2） Based on the result of azimuthal anisotropy prediction, a fracture system with anisotropy strength values between 1 and 1.15 represents a moderate development of high-angle fractures, which is considered to be favorable for shale gas accumulation and high productivity, while fracture systems with anisotropy strength values larger than 1.15 indicate over-development of shale fracture, which may result in the destruction of the shale reservoir preservation conditions.

关键词： Azimuthal anisotropy Fracture prediction Shale Shale gas Shale reservoir preservation conditions

Fluoro-functionalized plant biomass adsorbent:Preparation and application in extraction of trace perfluorinated compounds from environmental water samples

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Journal of Environmental Sciences 2024年第3期137卷 703-715页

作者： xi Tan Yan Shi chun-Feng Ma Quan Chi Yu-Hang Yang Wen-xiang Zhang Hua-Ming xiao xian wang Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission School of Chemistry and Materials ScienceSouth-Central Minzu UniversityWuhan 430074China School of Pharmaceutical Sciences South-Central Minzu UniversityWuhan 430074China Key Laboratory of Oilseeds Processing of Ministry of Agriculture Hubei Key Laboratory of Lipid Chemistry and NutritionOil Crops Research Institute of the Chinese Academy of Agricultural SciencesWuhan 430062China

Perfuorinated compounds(PFCs)are toxic and widely present in the environment,and therefore effective adsorbents are required to remove PFCs from environmental *** the present study,a new type of fuorinated biomass materials was synthesized via an ingenious fuorosilanization *** adsorbents were applied for the adsorption of 13typical PFCs,including perfuorocarboxylic acids(PFCAs)and perfuorosulfonic acids(PFSAs).By comparing their adsorption performance,Fluorinated cedar slag(FCS)was discovered to have the best absorption efficiency and enabled highly efficient enrichment of *** adsorption recovery of FCS with the investigated PFCs is greater than 90%under the optimal adsorption *** to the high affinity of F-F sorbent-sorbate interaction,FCS had good adsorption capacities of PFCs from aqueous solution,with the maximum adsorption capacity of 15.80 mg/g for PFOS and 10.71 mg/g for PFOA,***,the adsorption time could be achieved in a short time(8 min).Using the FCS absorbent,an innovative FCS-solid phase extraction assisted with high performance liquid chromatography-electrospray-tandem mass spectrometry(FCS-SPE-HPLC-ESI-MS/MS)method was first developed to sensitively detect PFCs in the environmental water *** intra-day and inter-day recovery rates of the 13 compounds ranged from 90.7%-104.3%,with the RSD of 2.1%-4.7%(intra-day)and 2.5%-8.5%(inter-day),*** research demonstrates the potential of the newly fuoro-functionalized plant biomass to adsorb PFCs from environmental water,with the advantages of high adsorption efficiencies,high antiinterference,easy operation and low economic cost.

关键词： Fluoro-functionalized biomass Perfuorinated compounds(PFCs) Adsorption efficiency Mass spectrometry(MS) Fluorinated cedar slag(FCS)

The effects of grain texture and phenotypic traits on the thin-layer drying rate in maize(Zea mays L.) inbred lines

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Journal of Integrative Agriculture 2016年第2期15卷 317-325页

作者： SUN Le-xiu LIU Shuang-xi wang Jin-xing WU Cheng-lai LI Yan ZHANG chun-qing State Key Laboratory of Crop Biology/Agronomy College Shandong Agricultural University College of Mechanical & Electronic Engineering Shandong Agricultural University

To explore the relation of maize grain texture and phenotypic traits with grain thin-layer drying rate,we observed the ultra-structure of maize grain,and tested three traits about the maize grain texture and four phenotypic *** vitreous part percentage was different（P〈0.05） among different maize inbred *** was a significant relationship between the drying rate with grain texture and phenotypic *** factors that influenced the drying rate were different during different drying *** results observed that empirical constants（k and N） in drying equation were different for seed of the 30 inbred lines of *** k of simplified diffusion equation and N of page equation were significantly influenced by both grain texture and phenotypic *** results could be used as guideline parameters for drying maize seeds having different grain characteristics during different drying stages.

关键词： maize seeds texture and phenotypic traits drying rate drying parameters

Effect of carbon addition on stress rupture properties of a cast TiAl alloy

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Journal of Iron and Steel Research International 2019年第3期26卷 268-274页

作者： xi-wen Zhang Yu-ling Tang chun-lei Zhu Ji Zhang Beijing Key Laboratory of Advanced High Temperature Materials China Iron and Steel Research Institute Group Beijing 100081 China National Center for Electron Microscopy in Beijing School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Two TiAl alloys,Ti^47.5Al-3.7(Cr,V,Zr)and Ti77.5Al-3.7(Cr,V,Zr)-0.1C(at.%),were melted and cast with the same process,*** with strongly oriented lamellae were both observed in these two alloys followed by hot isostatic pressing and heat ***2AlC carbides were identified in the alloy with C *** rupture tests were carried out at 800 and 850°C,with tensile stress from 220 to 400 MPa,*** was shown that the alloy with C experienced much longer lives than the other,especially under the condition of 800°C/260 MPa,800°C/300 MPa,850°C/220 MPa,850°C/240 MPa and 850°C/260 *** of ruptured specimens revealed that the microstructure stability was improved significantly in the alloy with C addition which is attributed to the strengthening effect of Ti-Al-C *** Ti2AlC carbides mainly increased the resistance of dislocation passing through the interfaces and kept the integrity of the *** Ti3AlC carbide was formed during stress rupture process,which could not only effectively act as the barrier of dislocation movement inside the lamellae,but also strengthen the lamellae itself.

关键词： Titanium aluminide Carbon addition Stress rupture property Dynamic precipitated carbide