Results 11 to 20 of about 21,306 (119)
Zhejiang Daxue xuebao. Lixue ban, 2007 建立一种以luminol试剂为发光底物，检测连二亚硫酸钠水溶液体系产生的超氧阴离子自由基的化学发光法.研究表明，当luminol的浓度为0.05 mg/mL，连二亚硫酸钠浓度为0.012 mg/mL，体系pH=10.3时，可得最佳测定条件.分别测定了茶多酚、芦丁、槲皮素和抗坏血酸清除超氧阴离子自由基（）的能力.结果表明此方法操作简便、测量快速，能用于天然活性物质清除超氧阴离子能力的测定和清除自由基机理的研究.
SONGWei-hua(宋伟华) +2 more
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Studies on Physico-Chemical Properties and Antioxidant Activities of Chitosan Oligosaccharide-O-Kojic Acid Polymers(壳寡糖-O-曲酸聚合物的理化性质及抗氧化活性研究) [PDF]
Shipin kexue jishu xuebao, 2020 Chitosan oligosaccharide (COS) and kojic acid (KA) were used as synthetic initiators and the COS-based polymer (COS-O-KA) were synthesized by selective partial alkylation reaction to graft kojic acid onto the COS molecular chain.
LIU Xiaoli(刘晓丽) +1 more
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Zhongguo youzhi旨在为文冠果壳资源的综合利用提供参考，通过DPPH自由基、超氧阴离子自由基、羟自由基及脂质过氧自由基清除能力研究文冠果壳总皂苷和总黄酮的抗氧化活性,并分析了抗氧化活性与构效关系。结果表明：文冠果壳总皂苷和总黄酮均具有一定的DPPH自由基、超氧阴离子自由基、羟自由基及脂质过氧自由基清除能力，且文冠果壳总黄酮对4种自由基的清除能力均高于文冠果壳总皂苷；构效关系分析表明，文冠果壳总皂苷和总黄酮抗氧化活性差异与其化学结构有关。综上，从文冠果壳中提取总黄酮，并将其作为天然抗氧化剂进行开发 ...
刘荣徽，魏媛，刘超，赵光鸿，杨洋，刘玉冰，汪甜甜，王珊，史高峰，王国英LIU Ronghui, WEI Yuan, LIU Chao, ZHAO Guanghong, YANG Yang,
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Journal of Analytical Psychology, EarlyView.Abstract This paper examines the concept of non‐understandable in psychotherapy, based on the author's own play therapy with a boy with mild ASD (autism spectrum disorder). ASD is considered to belong to an area beyond comprehension, as psychotherapy is often deemed ineffective for it.
Toshio Kawai
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Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响
Conservation Biology, EarlyView.Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang +11 more
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Conservation Biology, EarlyView.Abstract Recognition and engagement of Indigenous Peoples and local communities (IP&LCs) and other traditional knowledge (TK) holders in formal biodiversity governance remain limited, despite their significant contribution to the conservation and sustainable use of biodiversity through their knowledge, innovations, practices, and land stewardship.
Kinga Öllerer +8 more
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自由基捕捉剂结构对
Fushe yanjiu yu fushe gongyi xuebao探究了N，N-二仲丁基对苯二胺（44PD）、特丁基对苯二酚（TBHQ）、二硫化二异丙基黄原酸酯（DIP）三类自由基捕捉剂对γ射线辐照作用下乙烯-醋酸乙烯共聚物（EVA）结构演化与性能变化行为的影响。热重分析（TGA）结果表明，三类自由基捕捉剂可抑制较高吸收剂量下EVA中聚乙烯链段的裂解。凝胶含量及应力松弛测试结果表明，三类自由基捕捉剂均可抑制EVA内部交联结构的构筑，其中，胺类抗氧剂44PD的抑制效果相对不明显，但吸收剂量较高时，含自由基捕捉剂的EVA，其交联结构较为完善，应力松弛速率较低 ...
胡 心芸 +6 more
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Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, EarlyView.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
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Informal supply chains of wild meat from rural Amazonia and food security in an urban center
Conservation Biology, EarlyView.Abstract Iquitos, the most populated city in the Peruvian Amazon, is a hub in the regional supply chain of wild meat and supplies urban consumers. Studies on wild meat consumption have focused primarily on markets, limiting the scope of species considered to those that are economically valuable and potential inferences from those data.
Fiorella Briceño Huerta +3 more
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Zhongguo shiyan zhenduanxue, 2011 过氧化脂质（Lipid Peroxidation LPO）是反映自由基对机体损伤的指标,超氧化物歧化酶（Superoxide Dismutase SOD）是生理状态下机体存在的防止自由基反应的酶,它能清除自由基 ...
姚刚, 马兴钢
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