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Farmers using insurance and cooperatives to manage agricultural risks: A case study of the swine industry in China

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Journal of Integrative Agriculture 2019年第12期18卷 2910-2918页

作者： zhang yan-yuan JU Guang-wei ZHAN Jin-tao College of Economics and Management Nanjing Forestry UniversityNanjing 210037P.R.China Chinese Academy of Agricultural Sciences Beijing 100081P.R.China College of Economics and Management Nanjing Agricultural UniversityNanjing 210095P.R.China

Purchasing agricultural insurance and joining agricultural cooperatives are two prevalent instruments used by farmers in China for dealing with agricultural risks. Data from 443 swine farmers in Jiangsu and Henan provinces of China were collected. Factors affecting the farmers’ decision to purchase agricultural insurance and join agricultural cooperatives were assessed. The possibility of simultaneous use of both instruments and the potential correlation between these two decisions was considered as well. Results showed that the farmers’ decision to use agricultural insurance and cooperatives was positively correlated, indicating that farmers who purchased agricultural insurance which mainly used to mitigate production risks were more likely to join agricultural cooperatives which more used to share market risks, and vice versa. Farmers’ knowledge of swine insurance and trust in the local government positively impacted the purchase of agricultural insurance, while education, years involved in swine production and scale of swine production positively impacted farmers joining agricultural cooperatives.

关键词： agricultural insurance agricultural cooperatives simultaneous decisions Bivariate Probit China

Synthesis and Characterization of Dual Acidic Ionic Liquids

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Chinese Chemical Letters 2005年第12期16卷 1563-1565页

作者： Xiao Hua WANG Guo Hong TAO Zi yan zhang yuan KOU State Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry and Molecular Engineering Peking University Beijing 100871

Novel ionic liquids with dual acidity, of which the cation contains Brφnsted acidity and anions contain Lewis acidity were synthesized. These ionic liquids obtained were identified by NMR, FF-IR, SDT and FAB-MS. Thei... 详细信息

关键词： Ionic liquids functional dual acidity synthesis characterization

New furo[3,2-h]isochroman from the mangrove endophytic fungus Aspergillus sp. 085242

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Chinese Journal of Natural Medicines 2020年第11期18卷 855-859页

作者： GUO Hui-Xian HUANG Cui-Ying yan zhang-yuan CHEN Tao HONG Kui LONG Yu-Hua School of Chemistry Guangzhou Key Laboratory of Analytical Chemistry for BiomedicineSouh China Normal UniversiyGuangzhou 510006China Key Laboratory of Combinatorial Biosynthesis and Drug Discovery(Wuhan University) Ministry of Educationand Wuhan University School of Pharmaceutical SciencesWuhan430071China

Four new compounds, asperisocoumarin G(1), asperisocoumarin H(2),(±)-asperisocoumarin I [(±)-3], along with the known pergillin(4) and penicisochroman L(5) were isolated from a mangrove endophytic fungus Aspergillus sp. 085242 by further chemical investigation. The structures of the new compounds, including their absolute configurations, were established by analysis of HR-ESI-MS and NMR spectroscopic data, and ECD calculation. Asperisocoumarins G-I(1-3) were new isocoumarins belonging to the class of furo[3, 2-h]isocoumarins which are rarely found in natural sources. All of the isolated compounds were evaluated for theirα-glucosidase inhibitory effects, and compounds 1 and 4 showed moderate α-glucosidase inhibitory activity, respectively. In an antimicrobial test, the racemate of 3 showed antibacterial activity against Salmonella.

关键词： Aspergillus Furo[3 2-h]isocoumarins α-Glucosidase inhibitory activity Antimicrobial activity

Ultrasonographic Characteristics of Intraductal Papillary Mucinous Neoplasm of the Pancreas

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Chinese Medical Sciences Journal 2010年第3期25卷 151-155页

作者： Ke Lu Qing Dai Zhong-hui Xu Yi-xiu zhang Li Tan yan yuan Yu-xin Jiang Department of Ultrasound Peking Union Medical College Hospita Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To analyze the clinical and ultrasonographic imaging features of intraductal papillary mutinous neoplasm （1PMN） of the pancreas. Methods Twelve patients with IPMN underwent surgery between May 2005 and December 2008, including 4 （33.3%） with adenoma and 8 （66.7%） with adenocarcinoma. IPMN was classified preoperatively into 3 types based on sonographic findings of different sites： main duct, branch duct, and combined type. All clinical presentations and ultrasonographic findings of those paticnts were reviewed and the correlation be- tween ultrasonographic hndings and histopathological results was analyzed. Results There were 9 men and 3 women with a mean age of 60.1±9.6 years （range, 32-73）. OF all the 12 patients with IPMN, 9 （75.0%） had experienced some symptoms of epigastric discomfort and/or pain as cell as backache; 7 cases were with medical history of acute pancreatitis, 5 cases with diabetes, 4 cases with elevated CA19-9, and 2 cases with steatorrhea. All lesions of IPMN have been revealed by transabdominal ul- trasonography. The mean diameters of the lesions were 1.4±0.8 cm （range, 0.5-2.0） and 6.3±6.0 cm （range, 2.0-20.0） in adenomas and adenocarcinomas, respectively. And the mean diameters of the main duct in adelnomas and adenocarcinomas were 1.0±0.8 cm and 1.6±1.0 cm, respectively. Among the 4 adnomas, 3 （75.0%） cases were classified as branch type based on sonographic findings, and 2 were demonstrated as mural nodules in which no color signals was detected. Among the 8 adenocarcinomas, 5 （62.5%） cases were classifled as main duct type, and 3 （37.5%） as combined type. In 7 of the 8 adcnocarcinomas, mural nodules were detected within the dilated ducts or cysts of the lesions in which color flow signals were detected. Conclusions Transabdominal ultrasonography can reveal the pancreatic cystic lesions of IPMN as well as dilated pancreatic： ducts. Some characteristics should be noticed as suggesting the possibility of malignancy： clinical sympt

关键词： intraductal papillary mucinous neoplasm pancreas ultrasonography

Management of head and neck hemangiomas in China

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Chinese Medical Journal 2008年第11期121卷 1037-1042页

作者： ZHENG Jia-wei ZHOU Guo-yu WANG yan-an zhang Zhi-yuan Department of Oral and Maxillofacial Surgery College of Stomatology Ninth People's Hospital School of MedicineShanghai Jiao Tong University Shanghai 200011 China

Hemangioma is a common benign vascular tumor,with an incidence of 2%-3% in the neonate and 10%in baby after 1 year.^1 The incidence of hemangiomas is approximately 22%-30% of preterm infants with birthweight less than 1000 g. The development of hemangioma is therefore supposed to be related to various intra- and extra-uterine factors.

关键词： hemangioma head and neck treatment

Primary Studies on Burnup Estimation of Irradiated Uranium by Dtermining 236U/238U in Contaminated Environmental Samples JIANG Xiao-yan,zhang Ji-long,ZOU Wei,Chang Zhi-yuan

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Primary Studies on Burnup Estimation of Irradiated Uranium b...

Annexin A2 promotes choroidal neovascularization by increasing vascular endothelial growth factor expression in a rat model of argon laser coagulation-induced choroidal neovascularization

作者： JIANG Xiao-yan zhang Ji-long ZOU Wei Chang Zhi-yuan

U/U of the environmental sample can indicate the existence of uranium irradiation,and even can be uesd to estimate the burnup of nuclear spent fuel.A study on the burnup estimation of irradiated uranium which was mixed with natural uranium was carried out by measuring the U/U and U/U in the samples by using MC-ICP-MS. According to the equation(1) and(2),a programme for calculating the burnup of the irradiated

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Chinese Medical Journal 2010年第6期123卷 713-721页

作者： ZHAO Shi-hong PAN Dong-yan zhang yuan WU Jin-hui LIU Xin XU Yu Department of Ophthalmology Changhai HospitalSecond Military Medical UniversityShanghai 200433China

Background Choroidal neovascularization （CNV） is a common cause of visual loss in the elderly patients with age-related macular degeneration and represents the growth of subretinal new vessels in the macular region. This study aimed to investigate the relationship between annexin A2 （ANXA2） and vascular endothelial growth factor （VEGF） in *** In a rat model of argon laser coagulation-induced CNV, the mRNA expressions of the annexins and VEGF protein expression in the retina were detected using fluorescent real-time polymerase chain reaction （PCR） and immunohistochemistry, respectively. The interactions between ANXA2 and VEGF in both a retinal pigment epithelial cell line RPE-J and the rat model of CNV were examined by means of RNA interference, real-time PCR, Western blotting, enzyme-linked immunosorbent assay （ELISA） and histopathological examinations. Results Fundus fluorescein angiography （FFA） showed that argon laser coagulation of the retina induced stable CNV models in the rats. Two to three weeks after the coagulation, ANXA2. and VEGF expressions in the coagulated area in the retina and choroid increased to the peak level, while the other annexin members （ANXA4, ANXA5, ANXA7 and ANXA11） showed no obvious changes. In RPE-J cells and the CNV model, RNA interference of ANXA2 gene significantly lowered the VEGF protein and mRNA expressions, and application of an adenoviral vector containing ANXA2 gene markedly increased VEGF expressions in the rat model of CNV, but produced no significant effects on the expressions of the kinase insert domain-containing receptor （KDR） or the fms-like tyrosine kinase （Fit-l）. The expression of KDR inhibited the increment in ANXA2 expression, but VEGF and Rt-1 did not directly affect ANXA2 expression. Conclusion Besides the role as a plasminogen and the receptor of tissue plasminogen activator, ANXA2, which is under regulation of KDR via a negative feedback mechanism, also participates in neovascularization by regulating VE

关键词： annexin A2 vascular endothelial growth factor choroid neovascularization

Data Storage Framework on Flash Memory using Object-based Storage Model

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Data Storage Framework on Flash Memory using Object-based St...

Glucocorticoid receptor signaling in the brain and its involvement in cognitive function

2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： LIN Wei zhang yan-yuan LI Zhan-huai Dept Computer Science and Engineering Northwest Polytechnic University

ISBN: (纸本)9781612848334

Flash memory has been widely used in various embedded devices, such as digital cameras and smart cell phones, because it has a fast access speed, shock resistance, high availability and an economization of power. However, replacing hard drives with flash memory in current systems often either requires major file system changes or causes performance degradation due to the limitations of block based interface and out-of-place updates required by flash. This paper presents a management framework of object-based storage system which use a object flash translation layer to manage and index the object data. It separates the object attribute and object data for the fast mounting of file system, and use a log to keep the data consistency. The experiment shows it accelerates the file system mount and reduces the cleaning overhead.

关键词： Flash memory Object-based file system Data placement Data consistency

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Neural Regeneration Research 2025年第9期20卷 2520-2537页

作者： Chonglin Su Taiqi Huang Meiyu zhang yanyu zhang yan Zeng Xingxing Chen Brain Science and Advanced Technology Institute Hubei Province Key Laboratory of Occupational Hazard Identification and ControlSchool of MedicineWuhan University of Science and TechnologyWuhanHubei ProvinceChina

The hypothalamic-pituitary-adrenal axis regulates the secretion of glucoco rticoids in response to environmental *** the brain,a nuclear receptor transcription fa ctor,the glucocorticoid recepto r,is an important component of the hypothalamicpituitary-a d renal axis's negative feedback loop and plays a key role in regulating cognitive equilibrium and *** glucoco rticoid receptor influences cognitive processes,including glutamate neurotransmission,calcium signaling,and the activation of brain-derived neurotrophic factor-mediated pathways,through a combination of genomic and non-genomic *** interactions within the central nervous system can alter the expression and activity of the glucocorticoid receptor,there by affecting the hypothalamic-pituitary-a d renal axis and stress-related cognitive *** appropriate level of glucocorticoid receptor expression can improve cognitive function,while excessive glucocorticoid receptors or long-term exposure to glucoco rticoids may lead to cognitive *** with cognitive impairment-associated diseases,such as Alzheimer's disease,aging,depression,Parkinson's disease,Huntington's disease,stroke,and addiction,often present with dysregulation of the hypothalamic-pituitary-adrenal axis and glucocorticoid receptor *** review provides a comprehensive overview of the functions of the glucoco rticoid receptor in the hypothalamic-pituitary-a d renal axis and cognitive *** emphasizes that appropriate glucocorticoid receptor signaling fa cilitates learning and memory,while its dysregulation can lead to cognitive *** provides clues about how glucocorticoid receptor signaling can be targeted to ove rcome cognitive disability-related disorders.

关键词： brain-derived neurotrophic factor calcium signaling glucocorticoid receptor glucocorticoid glutamate transmission hypothalamic-pituitary-adrenal axis long-term potentiation neurocognitive disorders neuroplasticity stress