Results 31 to 40 of about 15,328 (119)
Shuitu Baochi Xuebao, 2023 为探究大气氮沉降增加导致的土壤团聚体结构变化规律及其对土壤水分入渗性能的影响,在贡嘎山针叶成熟林和中龄林内分别设计2种氮肥形态[(NH4)2SO4、KNO3]和4个浓度水平(0,10,20,40 kg/(hm2·a)N)的添加试验,研究不同形态大气氮沉降对亚高山森林土壤团聚体结构和土壤水分入渗特征的影响。结果表明:(1)随施氮量增加,中龄林土壤大团聚体含量逐渐增加,土壤持水量、孔隙度和水分稳定入渗率逐渐增大;成熟林土壤大团聚体含量、土壤持水量、孔隙度和水分稳定入渗率均表现出先增加后降低的趋势;(2 ...
郭海云, 王根绪, 孙守琴
doaj
Sexuality, Gender &Policy, Volume 9, Issue 3, August 2026.ABSTRACT Menstrual justice is deeply interconnected with water justice, yet these topics remain largely siloed in policy and research—particularly in Canada, where water access is often assumed to be a non‐issue. However, existing literature reveals that inadequate water and infrastructure significantly affect menstrual hygiene, dignity, and health ...
Emma Cowman +4 more
wiley +1 more source
Functional Ecology, Volume 40, Issue 8, Page 2590-2601, August 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu +9 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2006 目的探讨下肢骨折病人D二聚体定量检测的临床价值。方法采用增强型乳胶免疫比浊法对109例下肢骨折患者术前、术后第3天及术后第7天进行血浆D二聚体的定量检测,跟踪观察患者病情。结果109例患者有10例并发DVT,并发DVT组术前、术后第3天及术后第7天血浆D二聚体的检测结果有显著性差异（P0.05）。而并发DVT组与未并发DVT组相比较:术前血浆D二聚体的检测结果无显著性差异（P>0.05）;术后第3天血浆D二聚体的检测结果有显著性差异 ...
王海, 齐新, 芦杰
doaj
Inferring alternative ecosystem states with field survey data
Methods in Ecology and Evolution, Volume 17, Issue 8, Page 2256-2276, August 2026.Abstract Many ecosystems potentially exhibit alternative stable states, where distinct states can coexist under identical environmental conditions. While simulation models have generated key hypotheses in alternative stable states theory, they often rely on scale‐free parameters disconnected from real ecosystems.
Ning Chen +10 more
wiley +1 more source
Gaoya dianqi, 2007 在介绍光学电流互感器原理和聚磁原理的基础上,给出了一种聚磁式光学电流互感器的结构,并对聚磁器通过ANSYS软件进行建模仿真,验证了不同气隙长度下的聚磁效果。试验结果表明,采用聚磁结构的光学电流互感器不但提高了光学电流互感器的灵敏度,而且具有较高的线性度,因而有着良好的应用前景。
韦兆碧 +5 more
doaj
Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman +6 more
wiley +1 more source
四川大学学报. 自然科学版, 1979 分别对以Si、Ni为粘结剂及纯镍为粘结剂的人造金刚石聚晶作了显微结构的观察。结果表明:前者是以生成的SiC和镍硅相起粘结作用,因此,这种聚晶有较好的热稳定性及较大的脆性;后者是以镍的固溶体(Ni)起粘结作用,所以韧性较好.但是,镍与金刚石的热膨胀系数相差甚大,这似乎是使得镍聚晶不宜在温度较高的环境中使用的原因。最后,本文对提高聚晶的质量提出了参考意见.
罗桂芸, 曾家玉
doaj
Advancing Major Policy Change Analysis in the Advocacy Coalition Framework
Politics &Policy, Volume 54, Issue 4, August 2026.ABSTRACT The Advocacy Coalition Framework (ACF) has been used extensively to study policy processes globally. Existing research, however, fails to sequence the combination of factors that influence policy change. Using theory‐testing process tracing and a within‐case study design focused on Ghana and Nigeria, we address these knowledge gaps by ...
Alex Osei‐Kojo +2 more
wiley +1 more source
Shuitu Baochi Xuebao目的为探究在边坡生态修复技术中生物结皮对土壤团聚体分布及稳定性特征的影响机制。方法以植被混凝土边坡不同生物结皮覆盖（藻结皮、混生结皮、藓结皮）土壤为研究对象，以无结皮覆盖土壤（CK）为对照，采用Le Bissonnais法分别对其不同土层（0~2、2~5 cm）土壤团聚体分布、团聚体稳定性及土壤理化属性特征进行研究。结果1）与CK相比，藻结皮、混生结皮和藓结皮覆盖土壤>0.25 mm团聚体含量（R0.25）分别增加12.53%、21.97%、30.20%（0~2 cm）和20.11%、32.00%、
董悦 +8 more
doaj +2 more sources