نتایج جستجو برای: nps

تعداد نتایج: 11204  

2016
Wenhui Pan Mengyao Qin Guoguang Zhang Yueming Long Wenyi Ruan Jingtong Pan Zushuai Wu Tao Wan Chuanbin Wu Yuehong Xu

Tacrolimus (FK506), an effective immunosuppressant for treating inflammatory skin diseases, hardly penetrates into and through the skin owing to its high hydrophobicity and molecular weight. The aim of this study was to develop a hybrid system based on nicotinamide (NIC) and nanoparticles (NPs) encapsulating FK506, such as FK506-NPs-NIC, for facilitating percutaneous delivery, which exploited v...

2011
J. J. Dong

Octahedral,cuboctahedral,branched and ‘rice-like’Pt NPs were synthesised using a seed-mediated growth route. Pt NPs (3 nm) were prepared and dispersed in oleyl amine to form a seed solution and then Pt(acac)2 was added. By adjusting the molar ratio of Pt from Pt(acac)2 and seed NPs, the seed diameter and the addition route of Pt(acac)2, the NPs growth could be controlled to fall into in a kinet...

Journal: :Nanoscale 2014
Sally Fae Ho Adriana Mendoza-Garcia Shaojun Guo Kai He Dong Su Sheng Liu Önder Metin Shouheng Sun

MPd (M = Co, or Cu) nanoparticles (NPs) were synthesized by borane-amine reduction of metal acetylacetonates. The size of the MPd NPs was controlled at 3.5 nm and their compositions were tuned by the molar ratios of the metal precursors. These MPd NPs were active catalysts for electrochemical oxidation of formic acid and the Cu30Pd70 NPs showed the highest mass activity at 1192.9 A gPd(-1), muc...

Journal: :The journal of physical chemistry. B 2005
Stephanie G Grancharov Hao Zeng Shouheng Sun Shan X Wang Stephen O'Brien C B Murray J R Kirtley G A Held

Monodisperse magnetic nanoparticles (NPs) could enable the ultra-sensitive magnetic detection of biological analytes. However, rendering these particles biocompatible has remained a challenge. We report the bio-functionalization and detection of 12-nm manganese ferrite NPs. We have achieved the site-specific binding of biotin-functionalized NPs onto avidin-patterned silicon oxide substrates and...

2012
Avnesh Kumari Vineet Kumar Sudesh Kumar Yadav

BACKGROUND Green synthesis of metallic nanoparticles (NPs) has been extensively carried out by using plant extracts (PEs) which have property of stabilizers/emulsifiers. To our knowledge, there is no comprehensive study on applying a green approach using PEs for fabrication of biodegradable PLA NPs. Conventional methods rely on molecules like polyvinyl alcohol, polyethylene glycol, D-alpha-toco...

Journal: :Medical physics 2002
J H Siewerdsen I A Cunningham D A Jaffray

A methodological framework for experimental analysis of the noise-power spectrum (NPS) of multidimensional images is presented that employs well-known properties of the n-dimensional (nD) Fourier transform. The approach is generalized to n dimensions, reducing to familiar cases for n = 1 (e.g., time series) and n = 2 (e.g., projection radiography) and demonstrated experimentally for two cases i...

Journal: :Journal of oncology practice 2010
Maura Polansky Alicia C Ross David Coniglio

PURPOSE A workforce study by the Association of American Medical Colleges (AAMC) predicted a shortage of 2,350 to 3,800 oncologists, or 9.5 to 15 million visits, by 2020. Proposed solutions included use of physician assistants (PAs) and nurse practitioners (NPs). Although 56% of the oncologists reported working with PAs/NPs, the AAMC did not survey PAs or NPs. This article uses additional data ...

2014
Georgina Medina Guangchen Ji Stéphanie Grégoire Volker Neugebauer

Recently discovered neuropeptide S (NPS) has anxiolytic and pain-inhibiting effects in rodents. We showed previously that NPS increases synaptic inhibition of amygdala output to inhibit pain behaviors. The amygdala plays a key role in emotional-affective aspects of pain. Of clinical significance is that NPS can be applied nasally to exert anxiolytic effects in rodents. This study tested the nov...

Journal: :The Analyst 2016
Trang H D Nguyen Peng Zhou Azlin Mustapha Mengshi Lin

Silver nanoparticles (Ag NPs) are one of the top five engineered nanoparticles that have been used in various products. Current methods for the measurement of Ag NPs are time consuming and expensive. Therefore, it is of critical importance to develop novel strategies to detect the presence of Ag NPs at low concentrations in different matrices. This study aimed at detecting and measuring Ag NPs ...

2011
Hong Yang Changchun Lou Mingming Xu Chunhui Wu Hirokazu Miyoshi Yiyao Liu

Multifunctionalized nanoparticles (NPs) are emerging as ideal tools for gene/drug delivery, bioimaging, labeling, or intracellular tracking in biomedical applications, and have attracted considerable attention owing to their unique advantages. In this study, fluorescent silica NPs were synthesized by a modified Stöber method using conjugates of 3-mercaptopropyltrimethoxysilane (MPS) and maleimi...

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