Results 31 to 40 of about 10,833 (166)
A spatially explicit assessment of factors shaping attitudes toward African elephant conservation
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Conservation plans that explicitly account for the social landscape where people and wildlife co‐occur can yield more effective and equitable conservation practices and outcomes. Yet, social data remain underutilized, often because social data are treated as aspatial or are analyzed with approaches that do not quantify uncertainty or address ...
Sarah L. Carroll +9 more
wiley +1 more source
蛋重和蛋形指数对巴布亚企鹅(Pygoscelis papua)孵化效果影响的初步研究
野生动物学报, 2017 本试验通过测量80枚巴布亚企鹅种蛋的蛋重、蛋纵径、蛋横径,将蛋重分为5组,蛋形指数分为4组,在相同条件下孵化。研究了蛋重、蛋形指数对巴布亚企鹅种蛋受精率及孵化率的影响。结果表明:蛋重对受精率的影响差异显著(P0.05),其余各组差异显著; 不同蛋形指数组间受精率和孵化率差异显著。
李艳秋 张胜久 宋新然 田小明 韩 涵
doaj
野生动物学报, 2011 精液品质评定的常见方法有精子活力、畸形率和顶体完整率等指标,但这些指标不能评定精子的真实受精能力。目前低渗膨胀试验作为检验精子膜功能的一种方法得到广泛认可,利用它可检验具有完整膜的精子是否具有生化活性。本试验通过对冷冻2只黑猩猩精液进行低渗膨胀来评定冷冻精子的膜完整性。试验结果显示,本研究中的黑猩猩的冷冻精子在低渗溶液中的膨胀率较高,表明试验黑猩猩的冷冻精液有较高的活力,精子具有较高的穿透率和受精能力。
黄志宏 +5 more
doaj
Zhongshan Daxue xuebao. Yixue kexue ban, 2021 目的探讨体外受精-胚胎移植（IVF-ET）周期中体外培养的胚胎发生污染的情况及其实验室培养和临床结局。方法回顾性分析2010年1月至2020年12月中山大学孙逸仙纪念医院生殖中心IVF-ET周期中70例胚胎污染的相关资料，比较不同授精方式的污染发生率、体外培养第1~3天（D1-D3）的污染发现率、以及卵泡液、精液、培养液3种标本的污染发生率，统计污染的微生物类型，比较全污染组（42例）和部分污染组（28例）的实验室培养及临床结局相关参数。结果在29 583个周期中共出现70例胚胎污染（0.24 ...
杜凤娇 +5 more
doaj
In vitro cross breeding : buckwheat (Fagopyrum esculentum Moench) as an example [PDF]
, 2003 Thesis (Ph. D. in Agriculture)--University of Tsukuba, (A), no.
Kachonpadungkitti Yongsak
core
Exploring critical factors in referral systems at different health‐care levels
World Medical &Health Policy, Volume 16, Issue 4, Page 729-744, December 2024.Abstract Background A consistent referral system and patient patronage are the primary connections between the three tiers in the healthcare delivery system. Patients were scheduled to visit primary care clinics for the first time. Subsequently, patients are moved to more distinguished healthcare facilities to receive additional care.
Farrukh Jamal +5 more
wiley +1 more source
World Medical &Health Policy, Volume 16, Issue 3, Page 506-513, September 2024.Abstract The preservation of the culturally important traditional herbal medicine practice in Ghana is threatened by the growth of allopathic medicine. It is argued that two main factors comprise this threat: significant safety concerns over many traditional herbal preparations, and a conflict in therapeutic frameworks which provides a substrate for ...
Benjamin Clay
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 1999 目的: 建立应用 13/21染色体特异性探针荧光原位杂交技术( FISH)检测种植前人类胚胎 13/21 染色体非整倍体 的方法。方法: 应用 FITC标记的 13/21 染色体着丝粒部位杂交的α卫星重复序列探针对27个未受精卵母细胞和 36 个多精受 精胚胎的卵裂球进行原位杂交。结果: 单倍体卵母细胞核呈现 2 个杂交信号, 固定率 80%, 杂交效率 67%; 多精受精胚胎的卵 裂球核呈现 6个杂交信号, 固定率72%,杂交效率 65%。结论: 应用荧光原位杂交技术在卵母细胞和胚胎细胞可检测 13 ...
李晓红 庄广伦
doaj
Collective effects of rising average temperatures and heat events on oviparous embryos
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Survival of the immobile embryo in response to rising temperature is important to determine a species’ vulnerability to climate change. However, the collective effects of 2 key thermal characteristics associated with climate change (i.e., rising average temperature and acute heat events) on embryonic survival remain largely unexplored. We used
Liang Ma +13 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2006 【目的】研究腹部超声引导下胚胎移植对体外受精-胚胎移植结局的影响。【方法】回顾性分析2001年7月至2005年3月，在本中心接受体外受精-胚胎移植（包括卵母细胞内单精子注射）治疗的461名患者521个周期的资料，按照胚胎移植时有无B超引导分为常规胚胎移植组（A组）和超声引导下胚胎移植组（B组），分别有187个周期和334个周期，比较两组患者的临床妊娠率、胚胎种植率、胚胎残留率和异位妊娠率。【结果】A组和B组的周期妊娠率分别是35．8％（67／187）和38.3％（128／334），P〉0．05 ...
张清学 +9 more
doaj