نتایج جستجو برای: pva

تعداد نتایج: 3922  

Journal: :Human brain mapping 2008
Chunshui Yu Yong Liu Jun Li Yuan Zhou Kun Wang Lixia Tian Wen Qin Tianzi Jiang Kuncheng Li

In early blindness, the primary visual area (PVA) loses the ability to process visual information, and shifts to working on the processing of somatosensory input, auditory input, and some higher-level cognitive functions. It has not yet been investigated whether such functional changes can lead to alterations of the functional connectivity between the PVA and other brain areas in resting state....

Journal: :Biological & pharmaceutical bulletin 2017
Tatsuaki Tagami Kaori Fukushige Emi Ogawa Naomi Hayashi Tetsuya Ozeki

Three-dimensional (3D) printers have been applied in many fields, including engineering and the medical sciences. In the pharmaceutical field, approval of the first 3D-printed tablet by the U.S. Food and Drug Administration in 2015 has attracted interest in the manufacture of tablets and drugs by 3D printing techniques as a means of delivering tailor-made drugs in the future. In current study, ...

2017
Xiaorong Liu Ruyuan Song Wei Zhang Chusheng Qi Shifeng Zhang Jianzhang Li

This study was to develop novel soy protein isolate-based films for packaging using halloysite nanotubes (HNTs), poly-vinyl alcohol (PVA), and 1,2,3-propanetriol-diglycidyl-ether (PTGE). The structural, crystallinity, opacity, micromorphology, and thermal stability of the resultant SPI/HNTs/PVA/PTGE film were analyzed by the Attenuated total reflectance-Fourier transformed infrared (ATR-FTIR) s...

2014
Susan Azizi Mansor B. Ahmad Nor Azowa Ibrahim Mohd Zobir Hussein Farideh Namvar

In this study, cellulose nanocrystals/zinc oxide (CNCs/ZnO) nanocomposites were dispersed as bifunctional nano-sized fillers into poly(vinyl alcohol) (PVA) and chitosan (Cs) blend by a solvent casting method to prepare PVA/Cs/CNCs/ZnO bio-nanocomposites films. The morphology, thermal, mechanical and UV-vis absorption properties, as well antimicrobial effects of the bio-nanocomposite films were ...

Journal: :AJNR. American journal of neuroradiology 1995
C P Derdeyn C J Moran D T Cross H H Dietrich R G Dacey

PURPOSE To evaluate the size and shape of commercially available polyvinyl alcohol (PVA) particles and to determine whether they change in size when suspended in nonionic contrast and in a solution of nonionic contrast and absolute alcohol. METHODS The two-dimensional area and the long and short axis of PVA particles from several different vendors were measured using a light microscope attach...

2016
Yongfang Qian Mengjie Qi Laijiu Zheng Martin W. King Lihua Lv Fang Ye

This study aimed to investigate the incorporation of rutin into electrospun pullulan and poly(vinyl alcohol) (PVA) nanofibers to obtain ultraviolet (UV)-resistant properties. The effect of weight ratios between pullulan and PVA, and the addition of rutin on the nanofibers' morphology and diameters were studied and characterized by scanning electron microscopy (SEM). Fourier transform infrared (...

Journal: :Clinical chemistry 1999
A T Remaley M L Sampson J M DeLeo N A Remaley B D Farsi M H Zweig

The clinical accuracy of diagnostic tests commonly is assessed by ROC analysis. ROC plots, however, do not directly incorporate the effect of prevalence or the value of the possible test outcomes on test performance, which are two important factors in the practical utility of a diagnostic test. We describe a new graphical method, referred to as a prevalence-value-accuracy (PVA) plot analysis, w...

Journal: :Journal of biomedical materials research 2002
W K Wan G Campbell Z F Zhang A J Hui D R Boughner

Although bioprosthetic heart valves offer the benefits of a natural opening and closing, better hemodynamics, and avoidance of life-long anticoagulant therapy, they nevertheless tend to fail in 10-15 years from tears and calcification. Several authors, including the present ones, have identified the rigid stent as a factor contributing to these failures. The ultimate solution is an artificial h...

Journal: :American journal of physiology. Heart and circulatory physiology 2004
Yutaka Kitagawa Daisuke Yamashita Haruo Ito Miyako Takaki

The aim of the present study was to evaluate specifically left ventricular (LV) function in rat hearts as they transition from the normal to hypertrophic state and back to normal. Either isoproterenol (1.2 and 2.4 mg.kg(-1).day(-1) for 3 days; Iso group) or vehicle (saline 24 microl.day(-1) for 3 days; Sa group) was infused by subcutaneous implantation of an osmotic minipump. After verifying th...

Journal: :European surgical research. Europaische chirurgische Forschung. Recherches chirurgicales europeennes 2012
M Ditzel E B Deerenberg N Komen I M Mulder H Jeekel J F Lange

INTRODUCTION Postoperative adhesion formation remains a major clinical problem. The aim of this study was to test the effect of a new hydrogel on adhesion formation in a rat model. MATERIALS AND METHODS A reproducible rat model was used to induce standardized adhesion formation in three experiments. In experiment 1, a cross-linked polyvinyl alcohol (PVA) and carboxymethylcellulose (CMC) hydro...

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