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Commercial cash crop production and households'economic welfare:Evidence from the pulse farmers in rural China

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Journal of Integrative Agriculture 2022年第11期21卷 3395-3407页

作者： MA Ji-liang LI Fan zhang hui-jie Khan NAWAB Institute of Agricultural Economics and Development Chinese Academy of Agricultural SciencesBeijing 100081P.R.China College of Economics and Management Huazhong Agricultural UniversityWuhan 430070P.R.China Agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081P.R.China College of Management Sichuan Agricultural UniversityChengdu 611130P.R.China Macro Agriculture Research Institute Huazhong Agricultural UniversityWuhan 430070P.R.China

Whether promoting cash crop production can increase household welfare has long been the focus of the food policy *** study first investigated the determinants of household behavior in commercial pulse *** then examined how households'commercial pulse production improves their economic *** used a dataset of 848 households collected from 2018 to 2019 to estimate the determinants of household behavior in commercial pulse farming by the Heckman two-step *** endogenous treatment regression(ETR)method was employed to examine the impact of commercial pulse farming on household economic *** results showed that factors such as market purchase prices,agricultural technology services,farmers'access to loans,and government subsidies promoted smallholders'commercial pulse farming;production costs and perceptions of climate change risks constrained smallholders'commercial pulse ***,commercial pulse production has increased household farm income but there was a limited impact on household off-farm *** findings suggest that policies aiming to increase households'cash crop production and market access could significantly improve the economic welfare of pulse farmers.

关键词： pulse farming cash crop commercialization economic welfare China

Connexin 43 remodeling induced by LMNA gene mutation Glu82Lys in familial dilated cardiomyopathy with atrial ventricular block

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Chinese Medical Journal 2010年第8期123卷 1058-1062页

作者： SUN Li-ping WANG Lin WANG hui zhang Yin-hui PU jie-lin Cardiovascular Institute and Fu Wai Hospital Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100037 China

Background Mutations in the lamin A/C gene （LMNA） may cause familial dilated cardiomyopathy （dilated cardiomyopathy） characterized by early onset atrio-ventricular block （A-V block） before the manifestation of dilated cardiomyopathy and high risk of sudden death due to ventricular arrhythmia, which is very similar to the phenotype of gap junction related heart disease. This study aimed to determine the expression and localization of connexins in neonatal myocytes transfected with wild-type （WT） or mutant LMNA to elucidate how these mutations cause heart diseases. Methods We studied the connexin 43 （Cx43） and connexin 40 （Cx40） expression in cultured neonatal myocytes transfected with wild-type （WT） or mutant LMNA （Glu82Lys （E82K） and Arg644Cys （R644C）） using confocal imaging and Western blotting analysis. Results Cx43 protein expression was reduced by 40% in cells transfected with LMNA E82K than that in cells transfected with WT LMNA cDNA. Confocal imaging showed that the Cx43 located inside the cells by LMNA E82K. By contrast, LMNA E82K mutation had no effect on expression and localization of Cx40. LMNA R644C transfection did not show any significant effects on gap junctions at all. Conclusions Our findings suggest that LMNA E82K significantly reduced the Cx43 expression and altered its localization which may be one of the pathological mechanisms underlying LMNA-related heart disease.

关键词： lamin A/C LMNA mutations connexin 43 atrio-ventricular block

High Solids-Content Nanosize Polymeric Microlatexes Made by Microemulsion Copolymerization at Ambient Temperature

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Journal of Wuhan University of Technology(Materials Science) 2004年第1期19卷 30-33,40页

作者：柯昌美 Wuhan University of Science and Technology

The microemulsion copolymerizations of acrylic acid (AA),acrylamide (AM),N-methylol acrylamide (NMA),methylmethacrylate (MMA),butyl acrylate (BA) and acrylonitrile (AN) initiated by the redox initiator ammonium persulfate (APS) and N,N,N′,N′-tetramethylethylenediamine (TMEDA) at ambient temperature were *** this process high solids-content (44.0 wt%) and small (less than 50 nm) particle diameter copolymer latexes were *** effects of surfactants,the mechanical stabilities and application properties as an environmentally friendly self-crosslinking pigment printing binder with multifunctional groups were studied.

关键词： microemulsion nanoparticle high solids-content binder

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哈密顿量宇称-时间对称性的刻画

物理学报 2024年第4期73卷 27-36页

作者：张慧洁贺衎太原理工大学数学学院太原030024

宇称-时间(PT)对称性理论描述了具有实能级的非厄密特哈密顿量,在量子物理学和量子信息科学中起着重要作用,是量子力学中活跃且重要的主题.研究者们对如何描述哈密顿量的PT对称性的问题给予了高度关注.本文基于PT对称理论和哈密顿量归... 详细信息

宇称-时间(PT)对称性理论描述了具有实能级的非厄密特哈密顿量,在量子物理学和量子信息科学中起着重要作用,是量子力学中活跃且重要的主题.研究者们对如何描述哈密顿量的PT对称性的问题给予了高度关注.本文基于PT对称理论和哈密顿量归一化特征函数,提出了算子F的定义.然后,在找到算子CPT和算子F的对易子和反对易子的特性后,给出了刻画了无量纲情况下哈密顿量的PT对称性的第一种方法.进一步研究发现,该方法还可以量化哈密顿量在无量纲情况下的PT对称性.此外,提出了另一种基于哈密顿量特征值实部和虚部来描述哈密顿量PT对称性的方法,该方法仅用于判断哈密顿量是否具有PT对称性.

关键词：哈密顿量 PT对称性对易子归一化特征函数

Coronary spasm, a pathogenic trigger of vulnerable plaque rupture

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Chinese Medical Journal 2011年第23期124卷 4071-4078页

作者： WANG Li-xin LU Shu-zheng zhang Wei-jun SONG Xian-tao CHEN hui zhang Li-jie Department of Cardiology Beijing Anzhen Hospital Capital University of Medical Sciences Beijing 100029 China

Objective This coronary artery spasm review aimed to explore the most possible pathogenic trigger mechanism of vulnerable plaque rupture. Data sources Data used in this coronary artery spasm review were mainly from Medline and Pubmed in English. Study selection These reports from major review on coronary artery spasm .and these research included coronary artery conception, pathogenesis of spasm, mechanisms of plaque rupture, epidemiological evidence, clinical manifestation and the relationship between coronary artery spasm and vulnerable plaque rupture. Results Coronary artery spasm is somehow related to the presence of atherosclerotic intima disease in the coronary artery. However, chronic low-grade inflammation causes coronary vessel smooth muscle cell hypersensitivity, which can directely cause coronary artery spasm. Myocardial infarction and sudden cardiac death may be initiated by a sudden intense localized contraction of coronary artery smooth muscle. Conclusion Coronary artery spasm may be one trigger that can initiate and exacerbate vulnerable plaque rupture.

关键词： coronary spasm vulnerable plaque rupture pathogenic trigger

A novel missense mutation, GGC（Arg454） → TGC（Cys）, of CYP11B1 gene identified in a Chinese family with steroid 11β-hydroxylase deficiency

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Chinese Medical Journal 2010年第10期123卷 1264-1268页

作者： YE Zheng-qin zhang Man-na zhang hui-jie JIANG Jing-jing LI Xiao-ying zhang Ke-qin Department of Endocrinology First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210029 China Shanghai Institute of Endocrinology and Metabolism Rui Jin Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200025 China

Background Steroid 11β-hydroxylase deficiency （11β-OHD）, an autosomal recessive inherited disease, accounts for 5%-8% of congenital adrenal hyperplasia. It was scarcely reported in China. This article reports two Chinese girls with 11β-OHD. Methods The two patients were sisters and presented with hypertrichosis, skin pigmentation, laryngeal prominence and virilization of external genitalia. The patients were followed up for their clinical symptoms and signs, hormone profile, and adrenal image. The genomic deoxyribonucleic acids of the patients and their parents were isolated. 11β-hydroxylase gene （CYP11B1） was amplified by polymerase chain reaction and directly sequenced. Results Hormone tests showed that serum cortisol was in the low limit of normal range, whereas the concentrations of adrenocorticotropic hormone, testosterone and progesterone were much higher than those of normal adult females. There were obvious adrenal hyperplasia and advance of bone age. After 11 months of treatment with dexamethasone, the skin pigment became regressed; the breast, uterus and ovary gradually developed and normal menstrual cycle started while the manifestations of virilization did not change. A single point mutation of CYP11B1 （R454C, GGC → TGC） in all the members of this family was detected. The sisters were homozygous and their parents were heterozygous. Conclusions The clinical manifestation of 11β-OHD is complicated. The manifestation of virilization could not regress after treatment with dexamethasone. The novel missense mutation of CYP11B1 （R454C, GGC → TGC） is the pathogenesis of 11β-OHD at least in some Chinese patients.

关键词： 11 beta-hydroxylase CYP11B1 congenital adrenal hyperplasia

Cubism in William Carlos Williams' Works--Taking Lines and The Disputants as Examples

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海外英语 2018年第23期 206-207页

作者：张汇杰北京邮电大学

William Carlos Williams(1883-1963),who was born in New jersey,is viewed as the greatest poet of the *** spent his whole life implementing the local color of American and the colloquial expressions of ***,it mainly explores Cubism in Williams'works and takes two poems as examples,which are Lines and The *** the help of cubist ideas,readers could easily understand Williams'words and ***,through analyzing Williams'poems,it is obvious that it is even hard for readers to observe the boundaries of poetry and ***,Cubism helps readers to decode Williams'poetry.

关键词： William Carlos Williams Cubism Lines The Disputants

Cohesion Analysis inThe Water Babies --Based on Systemic-Functional Grammar

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海外英语 2018年第23期 234-235页

作者：张汇杰北京邮电大学

Under the guidance of Systemic-Functional Grammar(SFG),cohesion is applied to analyze the selected *** plays a great role in organizing a whole context and it can be further divided into grammatical cohesion and lexical *** ideas of cohesion are illustrated and made it for application,which employs British children's literature-The Water Babies as the *** research method adopted here is mainly *** analyzing selected sections,it is obvious that cohesion helps readers understand the contexts ***,the use of cohesion makes the context more precise and *** context,the role of cohesion is irreplaceable.

关键词： Systemic-Functional Grammar (SFG) cohesion The Water Babies context

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煤巷顶板锚固孔钻进钻杆振动机理与特征分析

中国矿业大学学报 2016年第5期45卷 893-900页

作者：刘少伟付孟雄张辉岳杰河南理工大学能源科学与工程学院河南焦作454000 煤炭安全生产河南省协同创新中心河南焦作454000

基于煤巷顶板锚固孔钻进过程中钻杆存在横向振动、纵向振动、扭转振动,且岩石的响应力与反扭矩是钻杆发生3种振动的主要原因.利用数值计算方法,对λ=1.0~1.5条件下,煤巷顶板几种常见的岩石模拟钻进,获取了4种岩石对钻杆的响应力与反扭矩... 详细信息

基于煤巷顶板锚固孔钻进过程中钻杆存在横向振动、纵向振动、扭转振动,且岩石的响应力与反扭矩是钻杆发生3种振动的主要原因.利用数值计算方法,对λ=1.0~1.5条件下,煤巷顶板几种常见的岩石模拟钻进,获取了4种岩石对钻杆的响应力与反扭矩,并得到了钻杆的振动特征,发现应力状态的改变对钻杆振动特征影响不明显,钻杆在砂岩中钻进时主要振动形式以横向振动为主,在砂质泥岩中钻进时以纵向振动为主,在泥岩和软弱夹层中钻进时以扭转振动为主.钻杆横向和纵向振动响应频率按由大到小顺序依次为：砂岩、砂质泥岩、泥岩、软弱夹层.扭转振动响应频率按由大到小顺序依次为：泥岩、砂岩、砂质泥岩、软弱夹层.

关键词：顶板锚固孔振动特征响应力反扭矩响应频率