Results 41 to 50 of about 842,042 (203)
Zhongguo shiyan zhenduanxue, 2009 目的探讨前列腺素D2（ProstaglandinD2,PGD2）诱导外周血淋巴细胞表面前列腺素受体（CRTH2）功能状态变化的信号转导通路与该受体磷酸化的关系,以进一步阐明哮喘的发病机制。方法利用磷酸化蛋白提取试剂盒获得目的蛋白,利用Western blot技术检测用PGD2刺激后淋巴细胞表面CRTH2受体的表达情况及磷酸化的程度。结果用PGD2刺激后淋巴细胞表面CRTH2受体表达量明显下调、CRTH2受体的磷酸化程度明显提高、淋巴细胞表面CD40L的表达上调 ...
辛瑜 +5 more
doaj
, 1981 <正> 桡足类从卵中孵出后有一段复杂的变态过程。淡水自由生活的种类大都经过6个无节幼体期和5个桡足幼体期,然后才达成体。各期幼体在形态上互不相同。无节幼体与成体形态相差尤为悬殊。 自从Leeuwcnhoek首次发现桡足类的幼体以来,在其后的两百年间研究甚少,以致著名的分类学家M?ller不相信形态上如此相异者属于同一物种 ...
陈受忠
core
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT This study explores how 2SLGBTQ+ youth in Alberta, Canada—the country's most Conservative province—mobilize queer joy as a form of resistance amid rising anti‐queer and anti‐trans policies under a settler colonial, cisheteropatriarchal regime. Drawing from youth‐produced collages, we demonstrate that this visual arts‐based participatory method
JJ Wright, Gillian Robinson
wiley +1 more source
First, He Was Adam, and Then, She Was Eve
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT Trans* is an umbrella term that is used to describe people who identify with a gender that is different from their assigned sex at birth. There has been a marked increase in young people presenting to child and adolescent mental health services due to a lack of specialist gender clinics in the United Kingdom.
Corey Hartley +2 more
wiley +1 more source
大鼠实验性心肌梗死后β2肾上腺素受体动态变化及其拮抗剂对室颤阈值的作用
Zhongshan Daxue xuebao. Yixue kexue ban, 2004 【目的】观察心肌梗死后心室肌β2受体mRNA表达水平的动态变化及其拮抗剂对室颤阈值及心室有效不应期的影响。【方法】制作大鼠心肌梗死模型(n=60),随机分为心肌梗死后2、4、8周组,另行假手术为对照组(n=20)。每组再随机分为4小组,分别给予β2受体拮抗剂ICI118,551、β1受体拮抗剂阿替洛尔、β受体拮抗剂普萘洛尔,测定室颤阈值、心室有效不应期。取左室梗死边缘区组织,用RT-PCR方法测定β1、β2受体mRNA表达水平。【结果】心肌梗死后β1受体mRNA表达水平明显下降 ...
doaj
Jianzhu Gangjiegou Jinzhan, 2017 轮辐式张拉结构自重轻、造型优美,同时能够和建筑功能及建筑造型完美结合,深受建筑师的喜爱。该结构体系源自于自行车轮辐条结构,内拉环和外压环通过径向索连接,形成自平衡受力体系。对轮辐式张拉结构的体系演变进行了研究,并分析了轮辐式张拉结构的力学特性和受力原理。根据受力形式将全封闭体系分为连贯一体型和叠合受力型。同时研究了全封闭轮辐式张拉结构体系可能实现的结构形式,并对各结构形式的受力性能进行了分析。
张月强
doaj
Sexuality, Gender &Policy, Volume 9, Issue 4, November 2026.ABSTRACT The experiences of LGBTQIA+ students with disabilities may differ from those of peers who hold only one of these identities. In Greece, however, the educational system lacks clear guidelines for supporting this group. This study investigates LGBTQIA+ students' school experiences with the aim of formulating evidence‐based policy recommendations
Konstantinos Drosos +2 more
wiley +1 more source
cGHRH1-27NH2可作为家鸡生长激素释放激素受体的配体
四川大学学报. 自然科学版, 2012 家鸡生长激素释放激素（GHRH）的成熟肽段区存在一个酰胺化位点,提示具27个氨基酸残基的羧基端酰胺化多肽(cGHRH1-27NH2)可作为家鸡生长激素释放激素受体（GHRHR）的配体.为验证该假说,利用pGL3-CRE报告基因系统,在培养的中国仓鼠卵巢细胞中,探究人工合成cGHRH1-27NH2多肽对家鸡两个GHRH受体的激活潜能.结果显示:cGHRH1-27NH2可高效激活家鸡两个GHRH受体,并且该多肽对GHRH一型受体(cGHRHR1:EC50:0.18 nmol/L ...
黄桂安 +6 more
doaj
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Household food expenditure continues to be a key factor in ensuring the realization of the Human Right to Adequate Food. Particularly in Brazil, access to food can be limited by economic constraints in vulnerable families, especially among farming families, who have been more vulnerable to food insecurity in recent years in the country.
Lucas de Almeida Moura +3 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2009 目的通过健康兔眼和疱疹病毒潜伏感染兔眼间的配对角膜移植,探讨移植术后病毒在供体和受体间的传播途径。方法新西兰白兔30只,随机分成两组。实验组建立病毒潜伏感染模型,与对照组健康兔眼配对角膜移植,术后应用多重PCR检测。结果第一组（健康兔眼移植疱疹病毒潜伏感染供体）,5眼角膜植片、3眼受体角膜边缘、2眼三叉神经节检测到疱疹病毒。第二组（疱疹病毒潜伏感染兔眼移植健康供体角膜）,7眼三叉神经节和受体角膜边缘检测到疱疹病毒。结论潜伏疱疹病毒可以被诱导活化,角膜移植术后经供体向受体逆行传播或受体向供体顺行传播。
张岩, 王文军, 张显峰
doaj