Results 31 to 40 of about 1,257,163 (149)

Targeting and Energy‐Depleting Biomimetic Nanoparticles for Enhancing Combined Chemo‐Sonodynamic Therapy Against Esophageal Cancer

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Esophageal cancer is the seventh leading cause of cancer death, and the energy depletion in cancer cells can be achieved through synergistic therapy. The integration of sonodynamic therapy and chemotherapy offers a promising comprehensive treatment strategy for esophageal cancer.
Mengya Li   +4 more
wiley   +1 more source

颗粒标准化发展状况

open access: yes, 2010
<正>国际标准化组织(ISO)设立的有关颗粒的标准化技术委员会是ISO/TC24 Par·ticlecharacterization including sieving,该委员会原名是:筛子.筛子及其他粒度分级方法,现更名为:颗粒表征包括筛分。已经完成53项标准,其中有关颗粒的有34项。委员会下设两个分技术委员会,SC4:颗粒表征(Particle characterization)和SC8:试验筛 ...
李兆军
core  

中等粒径葡聚糖超顺磁性氧化铁纳米颗粒的制备

open access: yesZhongguo shiyan zhenduanxue, 2007
目的制备中等粒径葡聚糖超顺磁性氧化铁纳米颗粒,评估其作为一种新型的磁共振对比剂可行性。方法采用化学共沉淀法制作葡聚糖超顺磁性氧化铁纳米颗粒,通过凝胶色谱分离葡聚糖超顺磁性氧化铁纳米颗粒,用透射电子显微镜、粒度分析仪、X射线衍射和磁力计对葡聚糖超顺磁性氧化铁纳米颗粒进行表征分析。结果粒度分析仪与电子显微镜检测结果表明,目的粒子均匀一致,葡聚糖超顺磁性氧化铁纳米颗粒核心直径在35-41 nm之间,平均粒径40 nm。磁力仪检测结果显示,磁化曲线无磁滞现象,表现为超顺磁性,矫顽力为零,饱和磁化强度为23KA ...
丁军, 赵继红, 李祎, 杨海山
doaj  

Rational Design of Bimetallic MOF‐Derived Cu/Co@N‐C Nanocubes for Ultrasensitive Electrochemical Nitrite Detection

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT A facile coprecipitation‐pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen‐doped carbon matrices (Cu/Co@N‐C) through the carbonization of CuCo‐MOF precursors. Moreover, monometallic counterparts of Cu@N‐C and Co@N‐C were also prepared via carbonization of bimetallic CuZn‐MOF and CoZn‐MOF, respectively.
Weinan Yao   +7 more
wiley   +1 more source

一种同时还原氮氧化物、消除碳烟颗粒的催化剂及其应用

open access: yes, 2006
本发明涉及空气污染物NOx和碳烟颗粒的去除,具体地说是一种同时使氮氧化物还原和碳烟颗粒物消除的催化剂及其应用。催化剂以铜为活性组分,铜担载在活性炭或碳烟颗粒与氧化铈的混合物上,活性炭或碳烟颗粒与氧化铈的质量比为0.1~1,混合物担载铜的重量百分含量为5~10%。本发明优点为:用活性炭来模拟化工生产和发动机操作过程中生成的碳烟颗粒,首次采用Cu/C-CeO2催化剂对氮氧化物和碳烟颗粒同时消除,碳烟颗粒虽然为污染物,但在一定反应条件下可以将NO还原生成N2,同时自身还可以转化生成CO2 ...
徐长海   +4 more
core  

MoS2‐Modified Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes Encapsulating Ni Nanoparticles Enabling Synergistic Adsorption–Catalysis for High‐Performance Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang   +6 more
wiley   +1 more source

有机荧光纳米颗粒和金纳米颗粒在生化分析及抗菌中的应用研究

open access: yes, 2017
传统的荧光分子多数会有聚集诱导淬灭效应 (Aggregation Caused Quenching,ACQ),限制了其应用。聚集诱导发光(Aggregation Induced Emission, AIE)荧光分子不同于传统的荧光分子,在聚集的条件下产生荧光,具有生物相容性好、背景荧光较低等特点。在生化分析中应用 AIE 分子,可以免去在细胞、细菌等荧光定位中多次洗涤去除背景荧光的步骤, 可以实现快速及清晰荧光定位的目的。金纳米颗粒具有比表面积大、易于修饰等特点。其也有较为独特的光学性质 ...
杨兴龙
core  

Host–Guest Interactions Govern Drug Stability and Controlled Therapeutic Release: Based on Metal–Organic Frameworks as Smart Platforms

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Due to their exceptional porosity, structural versatility, and modular coordination chemistry, metal–organic frameworks (MOFs) have emerged as versatile platforms for targeted drug delivery. These structures enable fine‐tuning of pore size, surface activity, and framework stability for the encapsulation of a broad range of therapeutics ...
Rui Hua   +9 more
wiley   +1 more source

颗粒粒度组成对流态化质量的影响

open access: yes, 1984
本工作采用扫描电镜静态观察和显微录相的方法对不同双组分混合物料颗粒表面粘着行为和流化床浓粗结构进行了观察。并应用床层塌落法对这些混合物料的流化特性进行了测定。对粘附在粗颗粒表面的细颗粒的运动行为进行的理论分析解释了实验观察结果。本文指出,粗细颗粒之间的“粘着效应”导致双组分混合物料相互改善流态化质量的协同作用;提出的数学模型与实验结果符合得较好;对表观协同作用参数的计算和讨论 ...
夏亚沈
core  

Ni和Ni/NiO核-壳纳米颗粒

open access: yes, 2008
甘油用作沉淀镍与甘油物质的配合物的溶剂介质。所述沉淀物与液体溶剂分离并且干燥、在空气中煅烧以产生以包封在氧化镍壳中的镍核为特征的小颗粒(纳米大小)。镍核与氧化镍壳的比例可通过对在空气中加热的时间和温度的调节进行控制。延长在空气中的加热能够产生氧化镍颗粒,或者在氮气中煅烧所述沉淀物产生镍颗粒 ...
JD罗杰斯, W沈, Y李, M柴
core  

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