Ara
Toplam kayıt 650, listelenen: 21-30
Removal of chromium(VI) from aqueous solutions using poly(4-vinyl pyridine) beads
(Wiley, 2006)
Sorption of hexavalent chromium ions from aqueous solution by poly 4-vinyl pyridine [Poly(4-VP)] was studied. The batch method was applied for adsorption processes. The effects of initial ion concentration, time, pH and ...
4-vinylpyridine and 2-hydroxyethylmethacrylate monomer mixture graft copolymerization onto poly(ethylene terephthalate) fibers using benzoyl peroxide
(Springer, 2007)
Poly(ethylene terephthalate) (PET) fibers were grafted with 4-vinyl pyridine (4-VP) and 2-hydroxyethylmethacrylate (HEMA) using benzoyl peroxide (Bz(2)O(2)) as initiator in aqueous media. PET fibers were swelled in ...
Evaluation of pH and calcium ion release of Acroseal sealer in comparison with Apexit and Sealapex sealers
(Mosby-Elsevier, 2007)
Objective. This is an in vitro assessment of pH level and calcium ion release exhibited by 3 calcium hydroxide-based root canal sealers-Sealapex, Apexit, and Acroseal. Study design. The materials were prepared according ...
Tool wear evaluation by vibration analysis during end milling of AISI D3 cold work tool steel with 35 HRC hardness
(Elsevier Sci Ltd, 2007)
In this study, the relationship between vibration and tool wear was investigated during end milling. For this purpose, a series of experiment were conducted in a vertical milling machine. An indexable CBN insert and AISI ...
Reinforcement effect of polyethylene fibre in root-filled teeth: comparison of two restoration techniques
(Wiley, 2006)
To compare in vitro two different fibre placement techniques on reinforcement of root-filled molar teeth with mesio-occluso-distal (MOD) cavities. Fifty sound extracted human mandibular molars were used (n = 10). Group 1 ...
The influence of irrigating solutions on the accuracy of the electronic apex locator facility in the Tri Auto ZX handpiece
(Blackwell Publishing, 2007)
Aim To determine the influence of various irrigating solutions on the accuracy of the electronic apex locator facility in the Tri Auto ZX handpiece. Methodology One hundred and forty teeth with single canals and mature ...
Selective removal of Cr(VI) ions from aqueous solutions including Cr(VI), Cu(II) and Cd(II) ions by 4-vinly pyridine/2-hydroxyethylmethacrylate monomer mixture grafted poly(ethylene terephthalate) fiber
(Elsevier Science Bv, 2009)
In this study, a new reactively fibrous adsorbent was prepared by grafting 4-vinly pyridine (4-VP) and 2-hydroxyethylmethacrylate (HEMA) monomer mixture onto poly(ethylene terephthalate) (PET) fibers for removal of Cr(VI), ...
Protective effects of trapidil in lung after abdominal aorta induced ischemia-reperfusion injury: an experimental study
(Springer, 2005)
We aimed to investigate the protective effects of trapidil after the occlusion of abdominal aorta and the reperfusion injury in lung. Eighteen New Zealand albino rabbits were used in the study. In six animals [group 1, ...
Optimal frequency in extracorporeal shock wave lithotripsy: Prospective randomized study
(Elsevier Science Inc, 2005)
Objectives. To determine the optimal frequency of extracorporeal shock wave lithotripsy of urolithiasis, in terms of efficacy and duration, by comparing three different shock wave frequencies. Methods. A total of 170 ...
Hereditary haemochromatosis gene (HFE) H63D mutation shows an association with abnormal sperm motility
(Springer, 2009)
The aim of this study was to screen infertile men for HFE H63D mutation in correlation with clinical characteristics of infertile men (sperm concentration, sperm motility, morphology, testicular volume, Follicle Stimulating ...