Results 11 to 20 of about 1,416 (136)
Lipase-catalyzed synthesis of R-Poly (3-hydroxybutyrate) oligomer(脂肪酶催化合成聚R-3-羟基丁酸乙酯寡聚物研究)
Zhejiang Daxue xuebao. Lixue ban, 2018 聚R-3-羟基丁酸酯是一类具有重要生理作用的聚合物，其合成方法一直是手性聚合物合成领域的研究热点之一.在充分考察底物构型、溶剂等因素对酶促动力学拆分/聚合反应影响的基础上，结合过渡金属配合物对醇的原位外消旋化作用与酶促聚合反应，建立了一种绿色、高效的酶促动态动力学拆分/聚合一锅合成聚R-3-羟基丁酸酯的方法.通过该方法制备所得聚合物的分子量可以达到2.0×103 Da.通过改变聚合单体的光学纯度还可实现对聚合物分子量的调控，在不同光学纯度聚合单体的聚合反应中，聚合物的分子量可以较为均匀地分布在0.3 ...
XIABo(夏波), WUQi(吴起)
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Application of novel processing technology in the preparation of antioxidant peptides [PDF]
, 2023 In this review, the mechanism and characteristics of antioxidant peptides prepared by novel processing technologies such as microwave, ohmic heating, subcritical water, ultrasonic wave, high static pressure and pulsed electric field were summarized.
HUI Ting-ting +5 more
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EU Policy‐Making in the Digital Age: Major Trends and Insights From Public Policy Research
European Policy Analysis, EarlyView.ABSTRACT Has digitalization changed policy‐making dynamics at the European Union (EU) level? To investigate this issue, this article presents a scoping review of the literature on EU digital policy‐making. While much scholarship adopts a ‘Governance’ approach, two conceptually rich strands emerge: critical approaches, and digital sovereignty.
Chloé Bérut
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European Policy Analysis, EarlyView.ABSTRACT This article addresses a critical issue in evidence‐informed policymaking: the challenge of translating knowledge into policy outputs amidst the complex interplay between research and politics. It discusses the concept of “blocked learning,” where individual‐level learning fails to scale up to organizational and policy levels, thus impeding ...
Thenia Vagionaki
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Integrative Conservation, EarlyView.This research reveals the functional stability of mixed species foraging flocks (MSF) and their foraging height change with different taxonomic differences along the elevational gradient at Knuckles Montane Reserve, Sri Lanka. This offers new insights into how MSFs sustain with the elevational gradients supporting the altitudinal shifting species ...
Vimukthi. R. Gunasekeara +3 more
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Integrative Conservation, EarlyView.This study examines the Mawphlang Sacred Forest in Meghalaya as a culturally embedded model of community‐led conservation. Drawing on qualitative fieldwork, it highlights how spiritual reverence, sacred taboos, and ancestral authority shape ecological stewardship, complementing formal governance systems.
Mrinal Saikia
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Rare Metals, EarlyView.ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi +5 more
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Dianci bileiqi, 2023 本研究综合声成像技术和日盲紫外成像技术的各自优势，提出了一种针对电力设备外绝缘状态声-光协同可视化诊断方法。首先提出并开发了基于多重信号分类算法和单螺旋传感阵列的高聚焦精度电晕放电超声定位可视化方法；同时，在声成像有效视场内引入日盲紫外成像旁路。考虑环境噪声的对检测效果的影响，提出了一种可变权重的声-光协同可视化信息融合方法，通过声学强度点阵、紫外强度点阵和可见光像素视场的空间信息谱融合，实现了超声-紫外可视化诊断。在此基础上，进行了定位算法优化、视场配准及定位误差评估研究。测试表明 ...
杨代勇 +5 more
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Rare Metals, EarlyView.ABSTRACT Internal oxidation has been identified as an effective method for enhancing the strength of AgMg alloys. However, the concurrent occurrence of embrittlement remains inadequately understood, thus limiting their broader application. This study investigates the oxidation behavior of AgMg alloys with Mg concentrations ranging from 1 at% to 7 at ...
Hai‐Cheng Zhu +12 more
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Dianci bileiqi, 1995 化学合成法是一种制取超细、均匀分布粉体的有效方法。本文综述了化学合成法在制备ＺｎＯ压敏电阻粉体方面的应用研究，并对其性能进行了概述。其中包括化学共沉淀制取ＺｎＯ压敏电阻粉体、ＥＤＳ（Ｅｖａｐｏｒａｔｉｖｅ Ｄｅｃｏｍｐｏｓｉｔｉｏｎ ｏｆ Ｓｏｌｕｔｉｏｎｓ）法制取ＺｎＯ压敏电阻粉体和溶胶－凝胶（Ｓｏｌ－Ｇｅｌ）法制取ＺｎＯ压敏电阻粉体。还对化学合成法制取ＺｎＯ压敏电阻粉体材料的发展作了概述。
袁方利, 季幼章
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