نتایج جستجو برای: thawing
تعداد نتایج: 4211 فیلتر نتایج به سال:
Aim . To evaluate the viability of mononuclear cells (MNCs) in leukocyte concentrates (LCs) at stages their preparation, freezing, and thawing. Materials methods The study material included 44 LCs from donors allogeneic hematopoietic stem (HSCs) 189 autologous patients with oncohematological disorders. were obtained by leukocytapheresis after mobilization HSCs. frozen dimethyl sulfoxide (DMSO) ...
The chloride diffusion of marine high-performance concrete under a couple actions, flexural load and freezing–thawing, was investigated by fast freezing thawing test in NaCl solution. Concrete specimens 100 × 515 mm were tested bending 300 freeze–thaw cycles the stress levels 15%, 30%, 50% ultimate fracture modulus. change microstructure analyzed SEM MIP. results indicated that coefficient coup...
Purpose: Glycerol has been the most widely used cryopreservation agent for spermatozoa and a wide range of factors affects its action on sperm viability and fertilizing capacity. Moreover egg yolk is a common constituent of semen diluents, protects the spermatozoa against cold shock and confers protection during freezing and thawing .The aim of this study was to investigate of different glycero...
Background: Detection of sperm parameters based on conventional methods, immediately after thawing, have been revealed sperm capacity to in vivo and in vitro fertilization. But this evaluation is not fully reliable because of long journey of sperm during female genital tract to reach the oocyte and fertilize it. Therefore, analyzing postthawed sperm parameters after incubation is more beneficia...
Two hours after semen collection, aliquots containing 6xlO 9 spermatozoa were centrifuged for 10 rain at 300 g. The seminal plasma was removed and the spermatozoa were resuspended to 5 ml with Beltsville F5 (BF5) extender. The semen was cooled gradually to 5 C over a 2-hr period, 5 ml of BF5 containing 2% glycerol was added and the semen was mixed and frozen immediately into pellets of 0.15 to ...
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