Results 91 to 100 of about 24,333 (149)
World Affairs, Volume 189, Issue 4, Winter 2026.ABSTRACT The move from unipolarity to a fluid and contested multipolar world order has significantly changed the way African nations form national security policy due to changes in the nature of the strategic environment of those states. Much of the literature has focused on how the actions of major world powers ‐ the United States, China and Russia ...
Chick Edmond +2 more
wiley +1 more source
Gongye shui chuli采用聚合氯化铝（PAC）+聚丙烯酰胺（PAM）混凝处理焦化废水生化尾水，通过单因素实验考察了混凝剂PAC、PAM投加量对混凝处理效果的影响。基于单因素实验开展响应面混凝实验，构建PAC、PAM投加量为自变量，出水残留浊度和出水过余电导率组成的加药控制系数为响应量的数学模型并对其参数进行了响应面优化。结果表明，混凝处理最佳药剂投加量PAC为2 546.96 mg/L，PAM为10.90 mg/L，此条件下出水平均浊度残留率为4.24%、电导率过余率为2.77%、加药控制系数为7.01，与模型预测值相对误差&
袁可, 李瑞鹏, 单文澜
doaj +2 more sources
Zhongguo shiyan zhenduanxue, 2015 目的应用响应曲面分析法探讨阿片类一非甾体类镇痛药在术后镇痛效果中的相互作用。方法 61例择期行脊柱外科手术患者纳入研究,ASAI-Ⅲ级、年龄40-80岁。随机设定舒芬太尼浓度(0-0.8μg/ml,梯度间隔为0.2μg/ml),同时复合不同浓度氟比洛芬酯(0-2.0mg/ml,梯度间隔为0.5mg/ml)。术终患者清醒后,以5ml/h持续泵注不同浓度镇痛药,1h后观察患者视觉模拟评分(visual analogue scale,VAS)。对两种药物镇痛效果间的相互作用进行响应曲面分析 ...
刘鹏飞, 关雷
doaj
Risks of concealing environmental degradation
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract Current practice seeks to conceal the visual impact of land‐use change (i.e., development). Six percent of development impact assessments in Australia and 14% of the World Bank's assessments recommend visual impact mitigation. This mitigation results in, for example, vegetated buffer strips alongside cleared agricultural areas and earthen ...
Matt W. Hayward +8 more
wiley +1 more source
Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, Volume 40, Issue 5, October 2026.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source
Predictive evolutionary genomics: principles, validation, and practice
New Phytologist, Volume 252, Issue 1, Page 36-48, October 2026.Summary Climate change and habitat loss are driving rapid evolutionary responses in populations world‐wide, which creates an urgent need for evolutionary forecasting in conservation and agriculture. Such forecasting can be categorized into three time scales: trait‐based models that use multivariate quantitative genetic equations to project correlated ...
Daniel Ortiz‐Barrientos +5 more
wiley +1 more source
Gaoya dianqi电缆终端硅橡胶（SR）绝缘与电缆本体交联聚乙烯（XLPE）绝缘之间良好的界面压力，是保证电缆终端高效安全运行的关键。电缆终端内径处的径向应力为电缆终端与电力电缆间的界面压力，温度的变化导致界面机械应力、界面热应力以及SR绝缘应力松弛特性存在差异，进而影响电缆终端的界面压力。文中采用单变量法研究温度对于界面机械应力、界面热应力以及SR绝缘应力松弛特性的影响，通过实验测得SR以及XLPE试样的线膨胀系数随温度的变化规律，将其分配到三维模型中，利用SR绝缘的超弹性和粘弹性本构模型 ...
邓繁盛 +5 more
doaj
Neutral interactions among non‐native plants are common
New 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
Green Hydrogen in Brazilian Media: Dominant Narratives and Missing Dimensions of the Energy Trilemma
Politics &Policy, Volume 54, Issue 5, October 2026.ABSTRACT Media discourses help shape the visibility and legitimacy of energy transition pathways in the public sphere. This study examines how Brazilian mainstream newspapers framed green hydrogen and assesses the alignment of these narratives with the energy trilemma: energy security, environmental sustainability, and social accessibility. We analyzed
Flávia Mendes de Almeida Collaço +3 more
wiley +1 more source
[Experimental teaching design of instrument analysis for undergraduate study： detection of bifenthrin pesticide residues in tea by response surface methodology-optimized QuEChERS combined with gas chromatography-mass spectrometry]. [PDF]
Se PuGu CX.
europepmc +1 more source