Results 41 to 50 of about 288,049 (189)

一种石墨烯复合涂层、石墨烯复合涂料及其制备方法

open access: yes, 2016
本发明提供了一种石墨烯复合涂料,其由树脂、石墨烯、苯胺低聚物、分散介质及涂料助剂组成,在石墨烯复合涂料中所述石墨烯所占的质量百分数为0.01%~5%,该石墨烯通过与苯胺低聚物形成π‑π键而均匀分散于所述树脂中 ...
刘栓   +4 more
core  

A framework for integrating resilience indicators into risk assessments

open access: yesConservation Biology, EarlyView.
Abstract Globally, ecosystems are increasingly threatened by climate change and human pressures, yet ecosystem risk assessments predominantly emphasize exposure to stressors while overlooking intrinsic ecosystem resilience—the capacity to absorb and recover from disturbances.
Benoît Pichon   +4 more
wiley   +1 more source

一种水性石墨烯复合涂层、水性石墨烯复合涂料及其制备方法

open access: yes, 2016
本发明提供了一种水性石墨烯复合涂料,其由水性树脂、石墨烯、苯胺低聚物衍生物、水及涂料助剂组成,在水性石墨烯复合涂料中所述石墨烯所占的质量百分数为0.01%~4%,该石墨烯通过与苯胺低聚物衍生物形成π‑π键而均匀分散于所述水性树脂中 ...
刘栓   +4 more
core  

Integrating biodiversity protection into emergency management

open access: yesConservation Biology, EarlyView.
Abstract Megafires have emerged as a considerable threat to biodiversity conservation worldwide. The biodiversity‐focused response and recovery actions that occurred during Australia's 2019/2020 Black Summer bushfires demonstrate that it is possible to protect biodiversity alongside human life and property during disasters.
Jacey Roche Cerda   +2 more
wiley   +1 more source

具有天然雌核发育特性的人工复合三倍体鲤鱼

open access: yes, 1997
报道了人工诱导的复合三倍体鲤鱼的雌性个体的卵细胞可以发育成熟,且具有天然雌核发育特性,人工复合三倍体鲤鱼的雌核发育后仍具有3套完整的亲本染色体 ...
吴清江,叶玉珍,陈荣德
core  

Integrating migratory connectivity data into the conservation of Australian sharks and rays

open access: yesConservation Biology, EarlyView.
Abstract Understanding migratory connectivity is important for conserving highly mobile marine species facing escalating threats. Establishing baseline information on migratory connectivity is necessary for identifying species and regions requiring transboundary cooperation for their conservation.
Diego F. Bezerra   +9 more
wiley   +1 more source

Assessing Argument Quality in L2 Argumentative Writing: Integrating Argument Elements and Intellectual Standards

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT Many existing rubrics for L2 argumentative writing prioritize form‐based linguistic accuracy and complexity while insufficiently addressing substantive argumentative rigor and effectiveness. This limitation is further complicated by cross‐cultural variation in rhetorical conventions and educational practices, which challenge the direct ...
Zihan Xu, Peiyun Liu
wiley   +1 more source

PCNA和DNA含量估测腮腺混合瘤增殖活性

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 1997
摘 要 为了评价增殖细胞核抗原( PCN A)表达和DN A含量在研究腮腺混合瘤细胞增殖活性中的价值, 对60 例良性无复发、复发和恶性腮腺混合瘤用PCN A免疫组化染色技术和流式细胞测量术作PCNA测定和 DN A含量测量。结果显示PCNA表达在各组间和高S期细胞比率( S PF)在无复发和复发组间有显著差异;恶性 混合瘤组与良性无复发组或复发组间有显著差异; PCN A表达与高SPF呈显著性正相关关系。提示PCN A表达 和DN A含量均能反映良恶性混合瘤细胞增殖活性 ...
陈伟良 孔庆瑜 李海刚 陈光晔 任材年
doaj  

一种提高断奶雌性动物卵泡发育能力的功能糖复合物及其应用

open access: yes, 2015
本发明公开了一种提高断奶雌性动物卵泡发育能力的功能糖复合物。本发明复合物每1kg饲料中含有以下成分:壳寡糖1~500mg,果寡糖1~500mg,酵母多糖1~500mg。本发明是一种提高断奶动物卵泡发育能力的功能糖复合物,具有提高动物的免疫能力、抗病能力和卵泡发育能力,本复合物无毒副作用、无残留、添加量少、无污染、重复性好 ...
王伦学   +5 more
core  

慢性鼻窦炎伴鼻息肉患者术后复发影响因素及血清ECP、IL-21对复发的预测价值

open access: yesZhongguo shiyan zhenduanxue
目的 探讨慢性鼻窦炎伴鼻息肉患者术后复发的影响因素及血清嗜酸性粒细胞阳离子蛋白(ECP)和白细胞介素-21(IL-21)水平对复发的预测价值,寻找评价慢性鼻窦炎伴鼻息肉术后复发的有效生物学标志物。方法 选取2019年12月至2020年10月衡水市第二人民医院收治的107例接受手术治疗的慢性鼻窦炎伴鼻息肉患者为研究对象,采集患者手术前后静脉血,ImmunoCAP 100TM过敏原检测系统检测血清ECP水平,通过酶联免疫吸附法检测血清IL-21水平,对患者进行随访,随访终点为复发,统计患者术后2年复发情况 ...
王荣霞   +4 more
doaj  

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