Results 31 to 40 of about 1,274,438 (219)

A Review and Critique of Methods and Knowledge Gaps in Quantifying Spillover Effects from Protected Areas

open access: yesConservation Biology, EarlyView.
Abstract The sustainability of area‐based conservation initiatives depends on their value to society. Conservation often focuses inside protected areas, but the impacts of protected areas beyond their boundaries (spillovers) are critical for their social license.
Ilaria Gliottone   +5 more
wiley   +1 more source

超声检查联合CA125、OPN检测在卵巢癌诊断中的应用

open access: yesZhongguo shiyan zhenduanxue, 2020
目的探讨超声检查联合糖类抗原125(CA125)、骨桥蛋白(OPN)检测在卵巢癌诊断中的应用价值。方法选取2017年1月至2018年3月在我院治疗的卵巢肿瘤患者89例,其中良性肿瘤51例,恶性肿瘤38例,均采用彩色超声检查,同时检测血清CA125和OPN水平。结果超声检查诊断卵巢癌灵敏度、特异度、阳性预测值和阴性预测值分别为76.32%、92.16%、87.88%和83.93%;恶性肿瘤患者血清CA125和OPN分别为143.92(34.38,210.29)U/ml和167.28(41.29,200 ...
季春艳, 曾艳, 程瑶瑶, 窦礼敏
doaj  

"fordi før så skreiv æ Å-G". En studie om andreklassingers valg av stavemåter.

open access: yes, 2023
The purpose of this master's thesis has been to look at the choices students in Year 2 make when spelling words. The students participating in this research are in the transition between phonological and orthographic writing, and the study will focus on how these students adopt different spelling strategies. The assignment's data material is taken from
openaire   +1 more source

Optimizing biodiversity offsetting for habitat succession and colonization dynamics

open access: yesConservation Biology, EarlyView.
Abstract Biodiversity offsetting aims to compensate for ecological losses from development through conservation and restoration. However, its long‐term outcomes under repeated impact–offset cycles remain uncertain. Using a conceptual forest succession model, we evaluated how offset outcomes are affected by interactions among compensation scale ...
Konstans Wells   +4 more
wiley   +1 more source

CEAmRNA、CEA蛋白检测在良恶性胸腹水中鉴别诊断的价值

open access: yesZhongguo shiyan zhenduanxue, 2003
目的 评价检测CEAmRNA ,CEA蛋白对良恶性胸腹水鉴别诊断的价值。方法 采用RT PCR方法对 37例胸水和 31例腹水CEAmRNA进行检测 ;CEA蛋白用时间分辨免疫荧光分析法测定。结果 恶性胸水组中CEAmRNA ,CEA蛋白阳性率明显高于良性胸水组 (P
陈杰, 张雪华, 张行, 潘锵荣
doaj  

用RAPD技术识别中华绒螯蟹性别差异

open access: yes, 1998
中华绒螯蟹(Eriocheirsinensis)又称河蟹,是我国的名贵水产资源。本文用200个随机引物对河蟹的雌雄群体和个体进行了RAPD(随机扩增的多态性DNA)分析,发现17个引物扩增出了群体水平的性别差异,其中的一个引物扩增出了个体水平的性别差..
邱涛,陆仁后,项超美,张菁,谢浩
core  

Synthesis of Pollinator‐Friendly Management in European Protected Areas

open access: yesConservation Biology, EarlyView.
Effectiveness of pollinator‐friendly management in European protected areas. Abstract Pollinators are important to humans and nature due to their role in ecosystem functioning and services. Research on the effects of pollinator management in protected areas is insufficient compared with that on farmlands and urban areas, potentially hindering ...
Gabriella Süle   +45 more
wiley   +1 more source

雌雄异株植物与性别比例有关的性别差异研究现状与展望

open access: yes, 2007
雌雄异株植物是陆地生态系统的重要组分,自然种群中其雌雄个体的性别比例通常为1∶1,但随水分、养分、CO2浓度、温度、光照和干扰水平等的不同而有所不同.一般来说,在逆境下性别比例偏雄性,这是雌雄异株植物性别分离的常见模式.雌雄异株植物不同性别间的差异主要体现在:(1)存活率,(2)形态特征,(3)生理生化特性,(4)物候期,(5)资源分配模式等方面,但对于雌雄个体差异的分子机理未见报道.这些差异导致了雌雄植株个体环境适应性的不同,从而表现为在不同环境下雌雄异株植物性别比例偏倚的现象.基于此 ...
尹春英, 李春阳
core  

Methodology to identify ecologically matching areas and its applications in conservation planning

open access: yesConservation Biology, EarlyView.
Abstract Identifying ecologically matching areas is both challenging and critical for understanding spatial patterns of biodiversity and advancing conservation planning. However, existing approaches often lack spatial flexibility, overlook shape and size constraints, or rely on limited environmental parameters, reducing their effectiveness in real ...
Pietro Milanesi   +7 more
wiley   +1 more source

LI-RADS与亚洲肿瘤峰会标准对小肝癌的诊断效能分析

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2019
【目的】比较肝脏影像报告和数据管理系统LI-RADS(v2013)和亚洲肿瘤峰会AOS标准对小肝癌的诊断价值。【方法】回顾性分析有肝细胞癌发病风险的220名共289处直径 ...
王影, 余深平
doaj  

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