Results 31 to 40 of about 7,419 (164)

Endogenous/Exogenous Dual‐Responsive Bimetallic Hollow Nanozyme for Photothermal/Nanocatalysis/Immune Synergistic Tumor Therapy

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Nanozymes have attracted considerable attention in cancer therapy due to their adjustable enzyme activity and high catalytic efficiency. However, they still face a major challenge from tumor metastasis. In this work, endogenous/exogenous dual‐responsive bimetallic hollow PdRu (termed HPdRu) nanozymes were prepared.
Nan‐Nan Zheng, Xin Hu, Jun‐Qing Hu
wiley   +1 more source

Boron Difluoride Chelated Aminoanthraquinone Photosensitizer for Type I Photodynamic Therapy

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Type I photosensitizers capable of generating cytotoxic reactive oxygen species (ROS), with reduced oxygen dependence under photoirradiation, are regarded as a promising phototherapeutic approach for hypoxic solid tumors. Herein, based on the electron donor of 9‐phenyl‐carbazole (Cz) and the electron acceptor of anthraquinone (AQ ...
Tian Zhang   +8 more
wiley   +1 more source

Primary study on antioxygenic activity of garlic

open access: yesHuli yanjiu, 2005
[目的 ]探讨大蒜原汁对脂质过氧化和超氧阴离子的影响。 [方法 ]将鼠肝制成匀浆加大蒜原汁 ,用脂质过氧化测定和超氧阴离子测定法检测大蒜的抗氧化活性。 [结果 ]大蒜原汁能显著抑制丙二醛的生成 ,清除超氧阴离子自由基和羟自由基 ,且在一定浓度范围内有剂量 -效应关系。 [结论 ]大蒜原汁具有抑制脂质氧化作用和清除超氧阴离子的作用。
段耀华, 陈浩, 郑巍
doaj  

阴离子多糖的结构特性及其在高水分 组织化植物蛋白中应用的研究进展Research progress on the structural characteristics of anionic polysaccharides and their application in highmoisture textured vegetable protein

open access: yesZhongguo youzhi
高水分组织化植物蛋白(HMTVP)具有高蛋白、低脂肪和低胆固醇等优点,已成为代替动物肉的一种优良选择,但其组织结构和口感与动物肉仍存在一定的差距。阴离子多糖与蛋白质之间的相互作用能改变蛋白质的功能特性,从而使产品质构特性和口感得以改善。旨在为阴离子多糖在HMTVP中的应用提供参考,概述了典型阴离子多糖(海藻酸钠、卡拉胶、黄原胶、羧甲基纤维素钠)的结构特性,总结了阴离子多糖与植物蛋白的相互作用,重点阐述了阴离子多糖在HMTVP中的应用,并对今后的研究方向进行了展望 ...
安红周1,2,任静文1,2,郭益廷2,李盘欣3,黄亚男3 AN Hongzhou1,2, REN Jingwen1,2, GUO Yiting2, LI Panxin3, HUANG Yanan3
doaj   +1 more source

Synthesis, Crystal Structures and Properties of Silver Clusters [PDF]

open access: yes, 2015
银簇合物的结构复杂,功能多样,受到人们的广泛关注。这类化合物的合成往往涉及多个组分(多金属中心和多种配体)的有序结合,具有极大的挑战性。多数银的簇合物见光易分解,提高其稳定性是一项重要的工作。前期的研究表明,采用多因素控制的方法,选择具有保护功能的炔银或硫银作为前驱体,通过内嵌阴离子模板、引入外围抗衡阴离子等手段,可以控制合成一系列结构新颖的高核银簇合物。随着对于银簇合物研究的不断深入,人们把关注的焦点逐渐转移到对其性质调控和功能改性上。因此,本文选定银簇合物最重要的特点之一—发光性质,作为主要研究对象。
刘宽冠
core  

Recent progress of direct ammonia fuel cells: from materials to transportation applications

open access: yesRare Metals, Volume 44, Issue 6, Page 3686-3708, June 2025.
Graphical Abstract AbstractAmmonia is a promising zero‐carbon alternative fuel. Direct ammonia fuel cells (DAFCs), as an efficient ammonia‐fueled power system, have an extremely high application value in the field of transportation for decarbonization.
Yi Huang   +8 more
wiley   +1 more source

Electrochemical and Raman Spectroscopy Studies of the Electric Double Layer at “Electrode/Ionic Liquid” Interface [PDF]

open access: yes, 2015
“电极/溶液”界面是各种电化学反应发生的场所,因此对界面结构和性质的研究不仅具有基础科学意义,而且能对实际应用起到指导作用。离子液体是一种新型溶剂,由于其具有蒸汽压几乎为零、导电性良好、电化学窗口宽等优点,离子液体被越来越多地应用于电化学以及其它领域,对“离子液体/电极”界面的研究也逐渐兴起,近十年来在理论和实验方面都有一定的进展,但仍需要更多的研究解决目前存在的问题:一方面,目前对离子液体界面的光谱表征集中在多晶或者粗糙电极上,电极表面结构的不确定性使结果分析和理论计算较为复杂 ...
张梦
core  

Prediction of vesicouterine adhesions by transvaginal sonographic sliding sign technique: validation study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 1, Page 114-121, January 2025.
ABSTRACT Objective Adhesions between the uterus, bladder and anterior abdominal wall are associated with clinical sequelae, including chronic pelvic pain and dyspareunia, and can also yield complications during surgery. The transvaginal sonographic (TVS) sliding bladder sign is a minimally invasive diagnostic tool to evaluate the presence of ...
N. Min   +9 more
wiley   +1 more source

氯离子通道相关肾脏疾病的现状和展望

open access: yesLinchuang shenzangbing zazhi, 2015
氯离子是机体维持内环境稳态最重要的阴离子,它在细胞内外的转运除了Cl-HCO3-交换及Na+-K+-Cl-和K+-Cl-共同转运外,还可经过氯离子通道进行转运。氯离子通道是一类选择性阴离子通道,通过对氯离子选择性通过膜结构参与调节细胞兴奋性、细胞容量,上皮细胞跨膜转运,胞内酸度、胞内囊泡酸化,细胞周期和凋亡等生理过程[1]。氯离子通道除γ-氨基丁酸受体氯通道外(存在于神经细胞),还包括电压门控氯离子通道,囊性纤维化跨膜转运调节体、钙离子激活性氯离子通道 ...
周建华, 蒲金赟
doaj  

Temperature effects on surfactant aqueous two-phase systems(温度对表面活性剂双水相及其倒置的影响)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
以实验室合成的N-十二烷基-N-(2-羟乙基)-N,N-二甲基溴化铵(C12HDAB)和N-十二烷基-N,N-二(2-羟乙基)-N-甲基溴化铵(C12DHAB)分别与十二烷基硫酸钠、溴化钠复配,构筑阴、阳离子表面活性剂复合系统双水相.以阳离子表面活性剂过量的双水相(ATPS-C)为例,着重研究温度对ATPS-C的影响.结果表明,双水相可在一定的温度区域内形成;在给定温度范围内升高温度,双水相区的组成宽度有所增大,相区位置略微移向阳离子/阴离子表面活性剂比例增大的方向;改变温度会使双水相发生相倒置现象 ...
HEJia-lei(何佳雷)   +4 more
doaj   +1 more source

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