نتایج جستجو برای: 1 as urea

تعداد نتایج: 7112350  

Hassan Ahmadvand,

Coenzyme Q 10 is a natural antioxidant and free radicals scavenger. In the present study, we examined effect of coenzyme Q 10 on hemoglobin A 1C , serum urea and creatinine in alloxan-induced Type 1 diabetic rats. Thirty Sprage-Dawley male rats were divided into three groups randomly; group one as control, group two diabetic untreatment, and group three treatments with coenzyme Q ...

Journal: :بوم شناسی کشاورزی 0
مهدیه زمردی شاهین شاهسونی مهدی برادران فیروزآبادی علی اصغر نادری

to study the effect of vermicompost and urea and iron sulfate fertilizers on the growth characteristics and yield of sunflower seed (helianthus annuus l.) an pediment was conducted in darreh gaz located in khorasan razavi province in 2012. factorial experiment in a randomized complete block design with three factors and three repetition. in this experiment three levels of urea (50; 150 and 250 ...

Journal: :The Journal of experimental biology 1995
Wood PÄRt Wright

Nitrogenous waste excretion in resting dogfish occurred largely (>90 %) as urea-nitrogen (urea-N) efflux across the gills, with a very small urea efflux via the kidney. Ammonia excretion, almost entirely at the gills, accounted for less than 3 % of total nitrogen excretion. Given the extremely high blood urea levels (approximately 640 mmol-N l-1) 'retained' for osmoregulation, and blood ammonia...

2015
L. Jayalakshmi C. Ramalingan B. Sridhar S. Selvanayagam

In the title urea derivative, C9H12N2O, the dihedral angle between the benzene ring and the mean plane of the urea group, N-C(=O)-N, is 86.6 (1)°. In the crystal, the urea O atom is involved in three N-H⋯O hydrogen bonds. Mol-ecules are linked via pairs of N-H⋯O hydrogen bonds, forming inversion dimers with an R (2) 2(8) ring motif. The dimers are linked by further N-H⋯O hydrogen bonds, forming...

2011
Guang-Bin Liu Peng-Sheng Chen Chang-Xiang Liu Ling Fu Xu-Liang Nie

In the title compound, C(9)H(11)N(3)O·CH(4)O, the semicarbazone moiety is nearly planar [maximum deviation = 0.017 (2) Å] and is twisted by a dihedral angle of 29.40 (13)° with respect to the phenyl ring. The semicarbazone moiety and phenyl ring are located on opposite sides of the C=N bond, showing the E configuration. An inter-molecular O-H⋯O and N-H⋯O hydrogen-bonding network occurs in the c...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1996
D M Cohen

Urea (200-400 milliosmolar) activates transcription, translation of, and trans-activation by the immediate-early gene transcription factor Egr-1 in a renal epithelial cell-specific fashion. The effect at the transcriptional level has been attributed to multiple serum response elements and their adjacent Ets motifs located within the Egr-1 promoter. Elk-1, a principal ternary complex factor and ...

The synthesis of iron oxide nano-particles by direct thermal decomposition was studied. Simultaneous thermal analysis and Fourier transform infrared spectroscopy results confirmed the formation of iron-urea complex, and disclosed iron oxide formation mechanism. Calcination of the iron-urea complex at 200°C and 250°C for 2 hrs. resulted in the formation of maghemite along with hematite as a seco...

Journal: :The Journal of experimental biology 2013
Jesper Brahm

This study extends permeability (P) data on chloride, urea and water in red blood cells (RBC), and concludes that the urea transporter (UT-B) does not transport water. P of chick, duck, Amphiuma means, dog and human RBC to (36)Cl(-), (14)C-urea and (3)H2O was determined under self-exchange conditions. At 25°C and pH 7.2-7.5, PCl is 0.94 × 10(-4)-2.15 × 10(-4) cm s(-1) for all RBC species at [Cl...

Journal: :The Journal of biological chemistry 1980
Y P Myer K K Thallam A Pande

The reduction of horse heart cytochrome c with ascorbate in the absence of urea and in its presence, 0 to 8 M, pH 7.0, has been investigated using a stopped flow technique and the absorptivity at 550 nm as the monitoring probes, and by using the rate of oxidizability with molecular oxygen. Reduction is found to be consistent with a mechanism involving (i) a urea-dependent equilibrium step betwe...

Journal: :Biochimica et biophysica acta 2004
M Danielle McDonald Chris M Wood

Recent in vivo evidence suggests that the mechanism of branchial urea excretion in the ammoniotelic rainbow trout (Oncorhynchus mykiss) is carrier-mediated. Further characterization of this proposed mechanism was achieved by using an in vitro isolated basolateral membrane vesicle (BLMV) preparation in which isolated gill membranes were used to determine a variety of physiological properties of ...

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