Results 11 to 20 of about 3,626 (117)

海洛因及补偿AMP和GMP对大鼠海马组织腺苷脱氨酶的影响

open access: yesZhongguo shiyan zhenduanxue, 2010
目的探讨海洛因及补偿AMP和GMP对海马组织嘌呤核苷酸分解代谢关键酶ADA的影响。方法剂量递增腹腔注射海洛因及嘌呤核苷酸,建立了海洛因及补偿AMP和GMP的给药与依赖大鼠模型,用试剂盒检测海马组织腺苷脱氨酶(ADA)的活性。提取海马组织总RNA,采用逆转录聚合酶链反应检测海马组织ADA mRNA的水平,以β-actin mRNA为内标。结果海马组织中ADA含量测定结果显示,与盐水对照组相比,核苷酸组和海洛因组的海马组织ADA含量明显升高 ...
阚慕洁, 付海英, 洪敏, 刘畅
doaj  

Use of species’ responses to cryptic anthropogenic disturbances for monitoring biodiversity outcomes in tropical forests

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Measuring area‐based conservation outcomes in tropical forests is challenging due to cryptic human disturbances (e.g., hunting). As a result, comparative studies of management strategies providing quantitative outcomes remain scarce, especially in the Neotropics.
Lucy Perera‐Romero   +5 more
wiley   +1 more source

兴奋毒损伤海马神经细胞机制的研究

open access: yesZhongguo shiyan zhenduanxue, 2003
目的 探讨谷氨酸 (Glutamicacid ,Glu)的神经性兴奋毒损伤作用机制。方法 在体外快速剥离新生大鼠 (0 1天 )双侧海马 ,制成海马神经细胞悬液 ,用Fura 2 /AM负载 ,建立了Fura 2 /AM检测海马神经细胞胞内游离钙离子浓度 ([Ca2 + ]i)的方法 ,并检测Glu兴奋毒对海马神经细胞 [Ca2 + ]i的影响。结果 Fura 2单细胞检测表明 ,静息状态下海马神经细胞 [Ca2 + ]i=2 5 2 .6± 36 .1(nmol/L) ,Glu可使海马神经细胞 ...
咸云淑, 熊文, 程刚
doaj  

短暂性全面性遗忘症伴海马损伤的血管危险因素及神经心理因素特征分析 Analysis of Vascular Risk Factors and Neuropsychological Factors in Transient Global Amnesia with Hippocampal Lesions

open access: yesZhongguo cuzhong zazhi
目的 探究短暂性全面性遗忘症(transient global amnesia,TGA)伴海马损伤患者的临床、血管危险因素及神经心理因素特征。 方法 回顾性纳入2015年1月—2024年1月海军军医大学第一附属医院收治的TGA患者,统计TGA伴海马损伤的部位及发病至完成头颅MRI的时间。根据是否伴有海马损伤将TGA患者分为TGA伴海马损伤组和TGA不伴海马损伤组,比较两组患者之间血管危险因素、小血管标志物、大血管狭窄程度、神经心理量表评估结果的差异。 结果 共纳入72例患者,平均年龄(63.7±11.
王为森1,杜冰滢1,李丙翰1,张馨元2,彭雯佳2,毕晓莹1 (WANG Weisen1, DU Bingying1, LI Binghan1, ZHANG Xinyuan2, PENG Wenjia2, BI Xiaoying1 )
doaj   +1 more source

Sun Bear Ecology and Conservation: Multiscale Habitat Associations in Southeast Asia 马来熊的生态与保护:东南亚地区的多尺度生境关联研究

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry   +5 more
wiley   +1 more source

Are Galliformes of the High Himalayas Well Protected? Identifying Conservation Priority Areas Using an Assemblage‐Level Approach 高喜马拉雅地区的鸡形目鸟类是否得到了有效保护?利用群落水平方法确定优先保护区域

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.
This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma   +5 more
wiley   +1 more source

CHINA’S LAND FINANCE AS ACTIVE MODE OF LAND DEVELOPMENT AND INFRASTRUCTURE DELIVERY: Reality, History and Prospects

open access: yesInternational Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.
Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
wiley   +1 more source

运动环境对低水平铅暴露小鼠海马神经结构的影响

open access: yesZhongguo shiyan zhenduanxue, 2009
目的探讨运动环境干预对低水平铅暴露小鼠海马神经细胞结构影响的特点。方法将离乳后的40只ICR雄性小鼠,随机分为:对照组非运动环境、对照组运动环境和实验组非运动环境、实验组运动环境四组,每组10只各放入76 cm×61 cm×46 cm的笼子内饲养8周。实验组均饮用铅浓度为0.2%的水染毒建模;运动环境是在设有跑车等运动装置下运动。利用原子吸收法进行血铅和脑海马铅的测定;采用H.E染色法对海马神经结构变化情况进行病理学解析。结果血铅和海马铅水平,实验组明显高于对照组 ...
高喆, 刘慧佳, 刘忠民, 陈桂秋
doaj  

The Effects of Working Memory Updating on Chinese Reading Comprehension Among Bilingual Primary School Students

open access: yesNew Directions for Child and Adolescent Development, Volume 2026, Issue 1, 2026.
Background Working memory updating is crucial in bilingual children′s second language (L2) reading comprehension. A robust updating ability is a cognitive key for children to successfully master L2 reading comprehension. Objective This study is aimed at investigating the effect of updating ability on the L2 Chinese reading comprehension among Uyghur ...
Guangxin Li   +3 more
wiley   +1 more source

丰富环境干预对短暂性全脑缺血大鼠海马形态学影响

open access: yesZhongguo shiyan zhenduanxue, 2011
目的探讨丰富环境干预对短暂性全脑缺血大鼠海马形态学的影响。方法将Wistar大鼠分组建立短暂性全脑缺血模型,进行丰富环境干预,进行大鼠海马形态学分析。结果 HE染色显示,与IS组相比,IE组海马CA1区组织的病理损伤明显减轻。锥体神经元排列较规则,肿胀、固缩及脱失神经元数目较少。Nissl染色显示,IS组海马细胞层数减少,神经元细胞间隙变大,排列稀疏,细胞形态异常,尼氏体大量脱失,染色浅谈且出现较多空白区;IE组海马区仅见少量神经元缺失及胶质增生,但细胞形态基本正常,细胞排列较为整齐,尼氏体较清晰 ...
蔺勇, 郎云峰, 张扬, 程永杰
doaj  

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