نتایج جستجو برای: polytetrafluorethylene

تعداد نتایج: 73  

Journal: :Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas 2011
T A M Andrade A Iyer P K Das N T Foss S B Garcia J Coutinho-Netto A A Jordão M A C Frade

The aim of the present study was to compare healing obtained with biomembranes with the natural healing process (sham) using biochemical and immunohistological assays. C57BL/6 mice were divided into 4 groups of 15 mice each and received different subcutaneous implants: natural latex biomembrane (NLB), denatured latex (DL), expanded polytetrafluorethylene (ePTFE), or sham. On the 2nd, 7th, and 1...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2013
Ali A Ensafi Elaheh Khoddami Behzad Rezaei

In this paper, we describe a new combination method based on polytetrafluorethylene (PTFE) film-based liquid three-phase micro extraction coupled with differential pulse voltammetry (DPV) for the micro extraction and quantification of atorvastatin calcium (ATC) at the ultra-trace level. Different factors affecting the liquid-three phases micro extraction of atorvastatin calcium, including organ...

2015
Michelle Pantoya Dylan Smith

Effect of Nanofiller Shape on Effective Thermal Conductivity of Fluoropolymer Composites Report Title Filler particle size and shape influence interconnectivity within a polymer matrix and play a significant role in controlling the effective thermal conductivity of a composite. This study examines the effect of nanofiller particle shape in a polytetrafluorethylene (PTFE) matrix on thermal energ...

2017
M. G. Mostafa Bo Zhu Marlene Cran Noel Dow Nicholas Milne Dilip Desai Mikel Duke

Meat rendering operations produce stick water waste which is rich in proteins, fats, and minerals. Membrane distillation (MD) may further recover water and valuable solids, but hydrophobic membranes are contaminated by the fats. Here, commercial hydrophobic polytetrafluorethylene (PTFE) membranes with a hydrophilic polyurethane surface layer (PU-PTFE) are used for the first time for direct cont...

Journal: :Brazilian oral research 2008
Mônica Fernandes Gomes Maria Fernanda de Souza Setúbal Destro Efani Caroline de Freitas Banzi Evanice Menezes Marçal Vieira Aline Rose Cantarelli Morosolli Maria das Graças Vilela Goulart

This research evaluated the bone repair process after implantation of homogenous demineralized dentin matrix (HDDM) in surgical defects in the parietal bone of rabbits with alloxan-induced diabetes, using a polytetrafluorethylene (PTFe) barrier for guided bone regeneration. Thirty-six rabbits were used and divided into four groups: control (C, n = 12), diabetic (D, n = 12, left parietal bone), ...

Journal: :The new microbiologica 2007
Rossella Sacchetti Giovanna De Luca Franca Zanetti

Numerous studies have shown that the water discharged from dental unit waterlines (DUWLs) contains high densities of bacteria, especially non-fermenting Gram negative bacteria. The aim of the present study was to investigate how the material (polyethylene-PE and polytetrafluorethylene-PTFE) and size (1.6 and 4.0 mm) of 4 waterlines in a pilot plant influence the level of contamination in the ou...

Journal: :Journal of Vascular Surgery 2021

ObjectiveTo evaluate the outcomes of various surgical approaches in treatment renovascular hypertension and midaortic syndrome (MAS) children.MethodsWe performed a retrospective medical record review patients who had undergone surgery for from 2010 to 2018 at our center under care multidisciplinary team. The operative interventions included mesenteric artery growth improves circulation (MAGIC),...

Journal: :Brazilian dental journal 2011
Aline Evangelista Souza-Gabriel Lilian Oliveira Cambaúva Vitussi Camila Milani Edson Alfredo Danielle Cristine Furtado Messias Yara Teresinha Correa Silva-Sousa

This study assessed the effect of bleaching protocols with 38% hydrogen peroxide (HP) and post-bleaching times on shear bond strength of a composite resin to dentin. One-hundred slabs of intracoronary dentin were included and randomly assigned into 2 groups according to the bleaching protocol: HP (2 applications of 10 min each) and HP activated by LED laser (2 applications of 10 min each/45 s o...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2001
U N Peri A Z Fenves J P Middleton

BACKGROUND The incidence of end-stage renal disease (ESRD) among patients over the age of 80 has nearly tripled in the last decade, making the 'old-old' the fastest growing ESRD demographic group. Despite this, very little information is available on the characteristics and survival of patients who initiate haemodialysis (HD) after reaching this age. METHODS We performed a retrospective study...

Journal: :nephro-urology monthly 0
jalaladin khoshnevis department of vascular surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran mohammad reza reza sobhiyeh department of surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran +98-2122721144, [email protected] ; department of surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran +98-2122721144, [email protected] saran lotfolahzadah department of surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran +98-2122721144, [email protected] fatemah hoseinzadegan hoseinzadegan shirazi department of surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran +98-2122721144, [email protected] amir hosein jalali department of surgery, faculty of medicine, shahid beheshti university of medical sciences, ir iran +98-2122721144, [email protected]

background dialysis vascular access complications are considered as significant causes of morbidity in chronic hemodialysis patients. objectives the aim of the present study was a comparison of axillary loop and straight grafts patency and its complications in hemodialysis access. patients and methods in this cohort study conducted at shahid beheshti medical university, 77 patients who underwen...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید