Results 21 to 30 of about 15,012 (166)
Focusing Events, Agenda Setting, and Narrative Numbing
Review of Policy Research, Volume 43, Issue 3, May 2026.ABSTRACT Focusing events are important in understanding policy change, as demonstrated in Birkland's work on agenda setting, the multiple streams framework, and the narrative policy framework. These frameworks emphasize the role of focusing events in drawing public attention to broader issues.
Megan K. Warnement Wrobel +1 more
wiley +1 more source
Review of Policy Research, Volume 43, Issue 3, May 2026.ABSTRACT Public private partnership literature promotes hybrid implementation structures as a potential solution to deal with limited resources and high levels of implementation burden and complexity. Despite the growing relevance and promises of hybrid implementation structures, we lack systematic knowledge on what makes governments opt for the ...
Stefan Wittwer, Fritz Sager
wiley +1 more source
Shuitu Baochi Xuebao, 2019 生物质炭对铵根的吸附解吸影响着土壤的固氮效果，为探讨茶渣生物质炭对茶园土吸附-解吸NH4+-N性能的影响，减少土壤中氮素的淋失，提高氮素利用效率，通过模拟培养试验，采用平衡吸附法及HCL解吸法，研究了不同热解温度下制备的茶渣生物质炭在不同添加比例（0.35%，0.70%，1.40%，2.80%）下，茶园土对NH4+-N吸附解吸的特性。结果表明：施用生物质炭能有效增强茶园土对NH4+-N的吸附，并随生物质炭添加量的增加而增强。同一生物质炭添加量下，4种生物质炭处理下茶园土对NH4 ...
林婉嫔 +4 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The stability of aqueous Zn2+ batteries is severely hindered by parasitic reactions at the Zn anode/electrolyte interface. Herein, itaconic acid (IA) is introduced as an effective electrolyte additive to achieve a highly stable zinc anode. Remarkably, IA concurrently modulates both the zinc anode/electrolyte interfacial structure and the Zn2 ...
Chenggang Wang +5 more
wiley +1 more source
Preparation and evaluation of mitomycin C-phospholipid complex-based novel targeted nanoscaled drug delivery systems [PDF]
, 2015 丝裂霉素C是一种临床常用的广谱抗生素类抗癌药物。然而丝裂霉素C在静脉注射给药中受到诸多限制，如生物利用度极低、体内半衰期极短、非特异性全身分布、严重毒副作用等，使其最终到达肿瘤部位的血药浓度仅为静脉给药浓度的1/20左右。因此，如何最大限度地提高药物疗效以杀伤肿瘤细胞同时把药物毒副作用降低到最低程度无疑是丝裂霉素C在癌症化学治疗中的重要问题。本研究立足于自组装技术，我们设计并开发了基于丝裂霉素C-磷脂复合物的单药纳米传递系统以及基于丝裂霉素C（主药）-磷脂复合物和甲氨蝶呤前药（副药）的双药纳米传递系统 ...
李阳
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Shuitu Baochi Xuebao, 2017 为了研究纳米TiO2对土壤吸附解吸汞性能的影响，以三峡水库消落区土壤为代表，选择2种晶型（锐钛矿和金红石）的纳米TiO2颗粒，设置3个浓度梯度（2，4，8 g/kg），制成含有不同浓度纳米TiO2颗粒的土样，配制不同浓度的Hg2+溶液，进行吸附解吸试验。结果表明：纳米TiO2颗粒可提高土壤对Hg2+的吸附量，但受颗粒的晶型和浓度的影响；锐钛矿颗粒对土壤吸附解吸Hg2+的影响更大，其吸附作用力更强，不易解吸，其中4 g/kg处理组吸附作用最强，与对照相比，最大吸附量可提高32.65%，且其解吸率低于对照组；
张金洋 +4 more
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The dual challenges of environmental sustainability and rising energy needs underscore the necessity for high‐energy‐density batteries, making lithium–sulfur (LSB) systems with their high theoretical capacity highly attractive. However, the polysulfide shuttle, coupled with inherent kinetic limitations in the sulfur reduction reaction ...
Bingbo Ni +4 more
wiley +1 more source
Gaoya dianqi, 2013 笔者结合吸附剂的吸附原理,搭建了吸附剂试验平台,设计了试验流程,完成了大量试验,旨在探索设备中吸附剂对气体分解产物定量检测结果的影响。文中主要研究了吸附剂对分解产物的吸附影响,通过试验研究,确定了影响SF6电气设备中分解产物检测结果的主要因素,包括容器材质、吸附剂种类、吸附剂用量、吸附剂安装位置等,并比较了相同条件下各种气体分解产物的吸附速率。文中结论对通过分解产物检测判断开关设备运行状况有重要指导意义。
苏镇西, 赵也
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Thermally driven hydrogenation of CO2 to light olefins (C2=–C4=) using metal oxide‐zeolite tandem catalysts is an effective strategy for achieving carbon neutrality. However, progress in this area is constrained by zeolite pore transport limitations, acid‐site inactivation, and surface carbon poisoning.
Haifeng Tian +10 more
wiley +1 more source
Research on key technology of determination for synthetic edible pigment based on Raman spectroscopy [PDF]
, 2015 随着食用合成色素被广泛应用于食品工业，违规使用合成色素导致的食品安全事件屡见不鲜，给人民的生命安全造成了巨大威胁，因此食品中合成色素的现场快速检测成为亟待解决的问题。 等离激元增强拉曼光谱技术以其快速、简便、灵敏高等特点，在食用合成色素现场筛查方面表现出明显的优势。本文从拉曼散射出发，介绍了等离激元增强效应及壳层隔绝纳米粒子的增强机制，并根据拉曼光谱的特异性提出合成色素检测原理，进而搭建基于等离激元增强拉曼光谱技术的合成色素检测系统，尤其是研制了一套高效、自动化的合成色素前处理装置 ...
梁骏
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