Results 141 to 150 of about 91,243 (286)

不同肥胖指数与胰岛素抵抗的相关性比较

open access: yesZhongguo shiyan zhenduanxue, 2017
目的分析长春地区40岁及以上居民肥胖相关衡量指标与胰岛素抵抗的相关性,选择一种简单、有效的预测胰岛素抵抗的指标。方法共纳入长春地区9273名研究对象,记录性别、年龄及一般情况,测量其身高、体重、腰围以及臀围,并根据测量结果计算体质量指数(BMI)、腰围身高比值、腰围臀围比值,并依据现有诊断标准计算肥胖患病率;同时进行空腹血糖、空腹胰岛素水平测定,计算稳态模型评估的胰岛素抵抗指数(HOMA-IR)、定量胰岛素敏感性检测指数(QUICKI);从而计算肥胖指标与HOMA-IR及QUICKI的相关系数r ...
梁爽   +6 more
doaj  

Exceptional Electromagnetic Wave Absorption in High‐Entropy Carbides Enabled by Lattice Distortion Engineering

open access: yesRare Metals, EarlyView.
ABSTRACT The growing concern over human health issues, driven by increasingly severe electromagnetic pollution from 5G communication, has made the urgent development of high‐performance electromagnetic wave (EMW) absorbing materials. Although carbide‐based materials are promising because of their conductive and polarization losses, existing single ...
Chenqiang Duan   +9 more
wiley   +1 more source

Challenges of Effective Wildlife Law Enforcement in Oyo and Lagos States, Nigeria 尼日利亚奥约州与拉各斯州野生动物执法有效实施所面临的挑战

open access: yesWildlife Letters, EarlyView.
Effective wildlife law enforcement is important in the drive for biodiversity conservation. This study examined the challenges of wildlife law enforcement in Oyo and Lagos States of Nigeria across four security outfits (Nigerian Police Force [NPF], Nigerian Customs Service [NCS], National Environmental Standards and Regulations Enforcement Agency ...
Oluwatosin Mercy Dada   +2 more
wiley   +1 more source

三江平原不同类型湿地土壤酶活性及其与营养环境的关系

open access: yesShuitu Baochi Xuebao, 2008
对三江平原3种典型湿地(毛苔草湿地、小叶章湿地、岛状林湿地)的土壤酶活性、土壤养分进行了研究,探讨了不同湿地土壤酶与土壤养分及酶活性间的相关性。结果表明:不同湿地土壤酶活性和土壤养分含量有较大差异。土壤蔗糖酶、脲酶、过氧化氢酶、淀粉酶活性与土壤有机质、全氮、碱解氮含量变化趋势一致,表现为毛苔草湿地>小叶章湿地>岛状林湿地。酸性磷酸酶活性表现为岛状林湿地>毛苔草湿地>小叶章湿地;纤维素酶活性则表现为毛苔草湿地>岛状林湿地>小叶章湿地。经分析,土壤酶活性和养分密切相关,且酶活性间存在一定的相关关系,其中脲酶、
万忠梅, 宋长春
doaj  

Perceived Risks and Agency Trust Associated With Chronic Wasting Disease Over Time 慢性消耗性疾病相关感知风险与机构信任的时序变化研究

open access: yesWildlife Letters, EarlyView.
We examined changes in perceived risks associated with chronic wasting disease (CWD) and perceived trust in wildlife agencies over time across 10 studies in eight states. Results indicated that perceived risks to both deer and humans declined the longer the disease had been in a state. Results also indicated that agency trust evaluations were positive,
Jerry J. Vaske, Craig A. Miller
wiley   +1 more source

Changes of Potential Suitable Areas for Lynx Under Climate Change in Mohe Area, Daxing'anling Mountains, China

open access: yesWildlife Letters, EarlyView.
Climate change drives shifts in suitable habitats for Eurasian lynx and its prey (hare, roe deer) in Mohe, Daxing'anling Mountains. Under RCP scenarios, moderate warming (RCP4.5) promotes substantial habitat expansion, while high‐emission conditions (RCP8.5) lead to strong expansion in the 2050s but slower gains and partial contraction by the 2070s ...
Binglian Liu   +5 more
wiley   +1 more source

Conservation Status, Decline Factors, and Strategies for Globally Endangered Musk Deer (Moschus spp.) in China 中国境内全球濒危麝属 (Moschus spp.) 物种的保护现状、致危因素及应对策略

open access: yesWildlife Letters, EarlyView.
This review summarizes the status of musk deer in China, highlighting severe population declines due to illegal hunting and habitat loss, and proposes integrated conservation strategies including habitat protection, captive breeding, and law enforcement to support the recovery and sustainable management of this ecologically and economically important ...
Feng Jiang   +8 more
wiley   +1 more source

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

自然绝经后女性亚临床甲状腺功能亢进与骨代谢的相关性研究

open access: yesZhongguo shiyan zhenduanxue, 2018
目的观察自然绝经后女性亚临床甲状腺功能亢进(SHyper)对骨密度以及骨代谢相关指标的影响。方法纳入绝经后亚临床甲亢女性50例为研究组,健康体检人员50例为对照组。观察两组一般指标,年龄、体重、体质指数;甲状腺功能指标,TSH、FT3、FT4、T3、T4;骨代谢指标,Ca2+、P3+、PTH、β-CTX、P1NP、VD3、N-MID及正位腰椎的骨密度(DXA)情况。结果亚临床甲亢组TSH水平低于对照组 ...
陶德明, 张久丹, 郑杨, 夏虹
doaj  

The coordination of dehydration tolerance and avoidance in oaks is mediated by leaf habit across a precipitation gradient

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Forests worldwide are increasingly impacted by drought due to climate change, prompting plants to adapt through dehydration tolerance (DT) and avoidance (DA), two distinct physiological strategies.
Xingyun Liang   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy