نتایج جستجو برای: nanosized

تعداد نتایج: 2869  

Journal: :Journal of New Technology and Materials 2014

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1392

a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...

Journal: :International journal of pharmaceutics 2009
R Ambrus P Kocbek J Kristl R Sibanc R Rajkó P Szabó-Révész

The rate of dissolution of drugs remains one of the most challenging aspects in formulation development of poorly water-soluble drugs. The meloxicam, a low molecular analgetic for oral administration, exhibits a slow dissolution. To improve the dissolution rate, the drug was formulated in a nanosuspension by using an emulsion-diffusion method, high-pressure homogenization or sonication. Optimiz...

Journal: :Talanta 2005
Zhenyu Zhang Ke Xu Zhi Xing Xinrong Zhang

The development of a catalytic chemiluminescent trimethylamine (TMA) sensor is demonstrated in the present paper. Intensive chemiluminescence (CL) is detected when TMA is introduced over the surface of nanosized catalysts and subsequently catalytically oxidized by O(2) from the air, and four catalysts are investigated with the strongest CL intensity obtained on nanosized Y(2)O(3). This effect i...

Journal: :Nanoscale 2012
Xiaosi Zhou Li-Jun Wan Yu-Guo Guo

MoS(2)@CMK-3 nanocomposite consisting of confined nanosized MoS(2) in CMK-3 carbon matrix exhibits much improved cycling performance and rate capability due to the enlarged interlayer distance and favorable conductivity.

2011
Marie-Isabelle Baraton

Nanosized titanium dioxide (nano-TiO2) particles are used in diverse products and devices, including photocatalytic water splitting and solar cells whose successful commercialization is still facing scientific and technologi-

2014
Bao Zhang Tao Zeng Jiafeng Zhang Chunli Peng Junchao Zheng Guomin Chen

Nanosized spherical LiFePO4/C composite was synthesized from nanosized spherical FePO4 ·2H2O, Li2C2O4, aluminum oxide, titanium oxide, oxalic acid, and sucrose by binary sintering process. The phases and morphologies of LiFePO4/C were characterized using SEM, TEM, CV, EIS, EDS, and EDX as well as charging and discharging measurements. The results showed that the as-prepared LiFePO4/C composite ...

Journal: :Nano letters 2017
Min-Joon Lee Eunsol Lho Peng Bai Sujong Chae Ju Li Jaephil Cho

Despite their good intrinsic rate capability, nanosized spinel cathode materials cannot fulfill the requirement of high electrode density and volumetric energy density. Standard carbon coating cannot be applied on spinel materials due to the formation of oxygen defects during the high-temperature annealing process. To overcome these problems, here we present a composite material consisting of a...

2013
Michaela Aufderheide Beat Halter Niklas Möhle Dieter Hochrainer

The EU Regulation on Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) demands the implementation of alternative methods for analyzing the hazardous effects of chemicals including particulate formulations. In the field of inhalation toxicology, a variety of in vitro models have been developed for such studies. To simulate the in vivo situation, an adequate exposure de...

Journal: :ACS nano 2012
Christian Dohmen Daniel Edinger Thomas Fröhlich Laura Schreiner Ulrich Lächelt Christina Troiber Joachim Rädler Philipp Hadwiger Hans-Peter Vornlocher Ernst Wagner

Although our understanding of RNAi and our knowledge on designing and synthesizing active and safe siRNAs significantly increased during the past decade, targeted delivery remains the major limitation in the development of siRNA therapeutics. On one hand, practical considerations dictate robust chemistry reproducibly providing precise carrier molecules. On the other hand, the multistep delivery...

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