نتایج جستجو برای: polyethylene microsphere

تعداد نتایج: 34830  

Journal: :Journal of magnetic resonance imaging : JMRI 2014
Yen-Yu I Shih Bryan H De La Garza Shiliang Huang Guang Li Lin Wang Timothy Q Duong

PURPOSE To compare basal retinal and cerebral blood flow (BF) values using continuous arterial spin labeling (CASL) MRI and fluorescent microspheres. MATERIALS AND METHODS A total of 41 animals were used. BF was measured using an established microsphere technique (a mixture of 2.5 million 8 μm green and 0.5 million 10 μm blue fluorescent microspheres) and CASL MRI blood flow measurement in th...

Journal: :Optics letters 2000
M Cai O Painter K J Vahala P C Sercel

We demonstrate a 1.5-microm - wavelength fiber laser formed by placement of glass microsphere resonators along a fiber taper. The fiber taper serves the dual purpose of transporting optical pump power into the spheres and extracting the resulting laser emission. A highly doped erbium:ytterbium phosphate glass was used to form microsphere resonant cavities with large gain at 1.5microm . Laser th...

Journal: :iranian journal of pharmaceutical research 0
alireza mahboubian faculty of pharmacy, tehran university of medical sciences, tehran, iran. seyyed kazem hashemein faculty of pharmacy, tehran university of medical sciences, tehran, iran. shadi moghadam medical nanotechnology research centre, tehran university of medical sciences, tehran, iran. fatemeh atyabi faculty of pharmacy, tehran university of medical sciences, tehran, iran. medical nanotechnology research centre, tehran university of medical sciences, tehran, iran. rassoul dinarvand faculty of pharmacy, tehran university of medical sciences, tehran, iran. medical nanotechnology research centre, tehran university of medical sciences, tehran, iran.

triptoreline is a potent agonist of luteinizing hormone-releasing hormone, currently used in the treatment of prostatic cancer where therapy may be required over months or years. frequent injection of drug decreases patients’ compliance. the present study describes the formulation of a sustained release microparticulate drug delivery system containing triptoreline acetate, using poly (d,l lacti...

H. Baharvand, M. Kardan, N. Sharafi, S. Sina, S.M.J. Mortazavi,

Background: Polyethylene composites including boron can be used as an effective neutron shield. Our investigation focuses on manufacturing borated polyethylene nano-composite. The purpose of this study is to design a radiation shield for use in both neutron and gamma fields. Materials and Methods: Borated polyethylene shields containing 2%, and 5% weight percentage of Boron nano-particles w...

2013
Alok Singh Devender Singh

The conventional oral dosage forms have regarding the short duration of delivery to system. A controlled release system designed to increase its residence time in stomach with contact with mucosa was achieved by the formulation of mucoadhesive microsphere of the drug. The aim of the present study is to provide an overview of various aspects of mucoadhesive microsp various polymers, preparation ...

Journal: :Optics express 2010
Gregor R Elliott G Senthil Murugan James S Wilkinson Michalis N Zervas Daniel W Hewak

Laser action has been demonstrated in chalcogenide glass microsphere. A sub millimeter neodymium-doped gallium lanthanum sulphide glass sphere was pumped at 808 nm with a laser diode and single and multimode laser action demonstrated at wavelengths between 1075 and 1086 nm. The gallium lanthanum sulphide family of glass offer higher thermal stability compared to other chalcogenide glasses, and ...

2009
S. B. Gholap S. K. Banarjee D. D. Gaikwad S. L. Jadhav R. M. Thorat

The purpose of writing this review on Hollow microspheres is to compile the recent literature with special focus on the principal mechanism of floatation to achieve gastric retention. Hollow microsphere promises to be a potential approach for gastric retention. The recent developments of FDDS including approaches to design single-unit and multiple-unit floating systems, mechanism of floating mi...

Journal: :Molecular & cellular proteomics : MCP 2006
Takuro Yaoi Sangpen Chamnongpol Xin Jiang Xianqiang Li

Src homology 2 (SH2) domains are evolutionary conserved small protein modules that bind specifically to tyrosine-phosphorylated peptides. More than 100 SH2 domains have been identified in proteins encoded by the human genome. The binding specificity of these domains plays a critical role in signaling within the cell, mediating the relocalization and interaction of proteins in response to change...

2017
Liulan Lin Tianjiang Wang Qi Zhou Niandong Qian

OIC-A006 (BMPs osteogenesis compounds), can stimulate bone marrow mesenchymal stem cells ALP, OPN, OC, Cbfal expression. To stimulate new bone formation in the body. We postulate different amounts of drug microspheres on the PLGA/β-CPT scaffold can produce the effects on performance and sustained release characteristics. In this paper, through adding different amount of carrier drug microsphere...

2014
Yukihide Minoda Kanako Hata Shigekazu Mizokawa Yoichi Ohta Maki Itokazu Kazumasa Yamamura Hiroaki Nakamura

Introduction: Polyethylene wear particles induce macrophages to release cytokines, which can lead to osteolysis and aseptic loosening of total joint prostheses. The generation of polyethylene wear particles is one of the most important factors that affect the midterm and long-term clinical results associated with total knee arthroplasty (TKA). Therefore, to achieve better long-term results for ...

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