Results 121 to 130 of about 842,042 (203)

Role of funders in embedding tests in conservation practice

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Effective conservation practice requires decisions based on reliable and relevant evidence, but significant gaps in the evidence base exist. Incorporating well‐designed tests of the effectiveness of interventions for biodiversity in conservation projects is one of the best ways to scale up the rate of evidence generation.
Rebecca K. Smith   +28 more
wiley   +1 more source

体育教学中的心理学

open access: yes, 1993
体育教学是教与学的过程。教与学的过程决不是单一的肌体运动的过程,而是肌体活动与心理活动互相交织着的,二者溶为一体的极为复杂、多变的高级活动过程。因此,体育教学必须对诸多的心理问题加以深入研究和运用。首先,要激发学生的学习动机。何谓学习动机?即指直接推动学生学习的内在动力 ...
曾凡莲, 邬淑华
core  

Scientists’ warning on the global destruction of rock outcrop ecosystems

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula   +19 more
wiley   +1 more source

实验性酒精中毒性脑病大鼠大脑皮层瘦素受体的表达

open access: yesZhongguo shiyan zhenduanxue, 2007
目的动态观察瘦素受体在大鼠酒精中毒性脑病发生中的变化及表达。方法用灌胃的方法制备大鼠酒精中毒性脑病的动物模型;采用蛋白印迹法(Western blot)检测瘦素受体在酒精中毒性脑病大鼠大脑皮层中表达的变化。结果酒精中毒性脑病组瘦素受体表达明显高于对照组 ...
聂莹雪, 吴晓黎, 崔丽颖
doaj  

Integrating fossil data in ecological niche models to improve predictions of future habitat of Caribbean corals

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Ecological niche models (ENMs) are used to assess the abiotic preferences of species by linking their occurrences to the environmental conditions in which they live. We developed a fossil‐informed ENM framework that integrates mid‐Holocene and modern occurrences to test niche stability and reconstruct abiotic niche characteristics for four ...
Claire. M. Williams   +3 more
wiley   +1 more source

光子晶体微腔缺陷模气体传感方法

open access: yes
一种光子晶体微腔激光器进行气体折射率传感的方法,包括如下步骤:步骤1:取一光子晶体激光器,将激光器F置于恒温箱中;步骤2:搭建传感所需的光路系统,该光路系统包括:一光源,在光源的入射光路上有一偏振片、一半反半透镜及一置放有光子晶体激光器的恒温箱,在与入射光路垂直的半反半透镜的反射光路上依次置放有探测器和光谱仪;步骤3:通过光源发出的光照射在光子晶体激光器上,激发出激光经半反半透镜,由探测器收集;步骤4:光谱仪将探测器收集的激光光谱进行分析,得到激射峰数据 ...
许兴胜   +4 more
core  

民族传统体育在民族院校体育教学中的地位和作用

open access: yes, 1997
本文就少数民族传统体育在民族院校体育教学中的地位和作用进行了阐述,认为把少数民族传统体育以其简便易学、强身益智、防病治病、休闲娱乐、不受场地器材限制的特点,纳入教学大纲 ...
刘德琼
core  

Neutral interactions among non‐native plants are common

open access: yesNew Phytologist, Volume 252, Issue 1, Page 292-309, October 2026.
Global distribution of studies and overall effect of co‐invasion for all metrics of non‐native plant performance combined. Summary Globalization has accelerated the establishment of non‐native plant species, increasing the prevalence of multispecies co‐invasions; yet interactions among co‐invaders remain poorly understood.
Feng He   +7 more
wiley   +1 more source

胃癌细胞株(SGC)细胞表面凝集素受体性质的研究

open access: yes四川大学学报. 自然科学版, 1992
研究了温度、反应时间、蛋白水解酶和单糖对凝集素与SGC细胞反应的关系,还测定了几种凝集素对SGC细胞的毒性作用.结果表明:SGC细胞在50℃保温30min后,细胞表面的凝集素受体基本失活;凝集素与SGC细胞在25℃温育90min后,其凝集反应的强度不再增加;SGC细胞经胰蛋白酶和胶原酶处理后,对细胞表面受体的活性影响不大,但经木瓜蛋白酶处理后,则其受体活性全部丧失;Man、Glc、GlcNAc可以抑制SFL对SGC细胞的凝集作用,但几种单糖对SLL与SGC的凝集作用均无明显的抑制作用;LPL ...
曾仲奎, 王涛, 于源
doaj  

基于微流控芯片的β2-肾上腺素受体激动剂检测方法

open access: yes, 2010
本发明基于微流控芯片的β2-肾上腺素受体激动剂检测方法,其特征在于:所述检测检测过程具体依次是:抗体包被、封闭液封闭、洗涤、酶标抗原和待测抗原与抗体竞争免疫反应、酶催化底物反应及激光诱导荧光检测。本发明具有检测时间短、检测限低、重现性好、易于操作、样品用量少、集成化等优点。其具有可预见的巨大的科学价值和经济价值 ...
姜雷   +4 more
core  

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