Search Results - "Lebedev, I A"

The Effects of Human Chorionic Gonadotropin and Gonadotropin-Releasing Hormone Receptor Antagonist on Testicular Steroidogenesis in Normal and Obese Rats by Lebedev, I. A., Kuznetsova, V. S., Bakhtyukov, A. A., Shpakov, A. O.

“…We studied the effect of a high-fat, high-carbohydrate diet (HFHCD) on basal testosterone levels in the blood and testosterone, its precursors, and expression…”
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Combined first-principles and EXAFS study of structural instability in BaZrO3 by Lebedev, A. I., Sluchinskaya, I. A.

“…Phonon spectrum of cubic barium zirconate is calculated from first principles using the density functional theory. Unstable phonon mode with the R 25 symmetry…”
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Ab initio calculations of phonon spectra in ATiO3 perovskite crystals (A = Ca, Sr, Ba, Ra, Cd, Zn, Mg, Ge, Sn, Pb) by Lebedev, A. I.

“…First-principles calculations of phonon spectra based on the density functional theory are carried out for calcium, strontium, barium, radium, cadmium, zinc,…”
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Ferroelectric properties of RbNbO3 and RbTaO3 by Lebedev, A. I.

“…Phonon spectra of cubic rubidium niobate and rubidium tantalate with the perovskite structure are calculated from first principles within the density…”
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Off-centering of the Fe atom at the A site in SrTiO3: calculations and experiment by Lebedev, A. I., Sluchinskaya, I. A.

“…The influence of annealing temperature and deviation from stoichiometry on the incorporation of the Fe impurity into the A and B sites of the perovskite…”
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Cobalt in Strontium Titanate as a New Off-Center Magnetic Impurity by Sluchinskaya, I. A., Lebedev, A. I.

“…The local structure and charge state of the cobalt impurity in SrTiO 3 is studied by X-ray absorption fine structure (XAFS) spectroscopy. The synthesis…”
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On the nature of change in Ni oxidation state in BaTiO3-SrTiO3 system by Lebedev, A. I., Sluchinskaya, I. A.

“…XAFS studies of Ni-doped Ba 1-x Sr x TiO 3 solid solution reveal that the Ni oxidation state changes from 4 in SrTiO 3 to 2.5 in BaTiO 3 when varying x. This…”
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Leptin Fragment Modulates Stimulatory Effects of Chorionic Gonadotropin on Testicular Steroidogenesis in a Rat Model of Diet-Induced Obesity by Bakhtyukov, A. A., Lebedev, I. A., Morina, I. Yu, Kuznetsova, V. S., Shpakov, A. O.

“…Leptin, secreted by adipose tissue, indirectly stimulates the activity of GnRH-producing neurons in the hypothalamus and thus regulates the functional activity…”
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Low Molecular Weight Thyrotropin Receptor Inverse Agonist Is Active upon Both Intraperitoneal and Oral Administration by Derkach, K. V., Bakhtyukov, A. A., Sorokoumov, V. N., Lebedev, I. A., Didenko, E. A., Shpakov, A. O.

“…Autoimmune hyperthyroidism (Graves’ disease), which is caused by stimulating autoantibodies to the thyroid-stimulating hormone receptor (TSHR), and thyroid…”
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Nonlinear optical properties of undoped and doped with Zr and Nb KTiOPO4 crystals by Lebedev, A. I.

“…The structure of the ferroelectric phase of undoped KTiOPO 4 and its solid solutions with zirconium and niobium is studied from first principles within the…”
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Steroidogenic Effect of Luteinizing Hormone Receptor Agonists and Metformin in Male Rats with Androgenic Deficiency Caused by Diet-Induced Obesity by Bakhtyukov, A. A., Derkach, K. V., Lebedev, I. A., Sorokoumov, V. N., Shpakov, A. O.

“…Men with obesity demonstrate not only various metabolic disorders and insulin resistance, but also reduced testosterone levels and reproductive system…”
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Dislocation density in copper and tantalum subjected to shock compression depending on loading parameters and original microstructure by Podurets, A. M., Tkachenko, M. I., Ignatova, O. N., Lebedev, A. I., Igonin, V. V., Raevskii, V. A.

“…The dislocation density ρ in copper and tantalum specimens with various grain size that remained after high-strain-rate loading by shock and quasi-isentropic…”
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Sobornost as a metaphysical category in the religious personalism of V.S. Solovyov, archpriest Sergiy Bulgakov and archimandrite Sophrony (Sakharov) by Semikopov, D. V., Lebedev, I. A., Aksenov, А. V.

“…Introduction. The article examines collegiality as a category of metaphysics in the religious and philosophical systems of V.S. Solovyov, prot. Sergei Bulgakov…”
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An experimental and theoretical study of Ni impurity centers in Ba0.8Sr0.2TiO3 by Sluchinskaya, I. A., Lebedev, A. I.

“…The local environment and the charge state of a nickel impurity in cubic Ba 0.8 Sr 0.2 TiO 3 are studied by XAFS spectroscopy. According to the XANES data, the…”
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Leptin Fragment 116–122 Modulates Testicular Steroidogenesis in Male Rats by Bakhtyukov, A. A., Lebedev, I. A., Kuznetsova, V. S., Derkach, K. V., Shpakov, A. O.

“…The adipokine leptin plays an important role in the regulation of the reproductive system. It stimulates the activity of the hypothalamic–pituitary–gonadal…”
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Stimulation of Ovulation in Immature Female Rats Using Orthosteric and Allosteric Luteinizing Hormone Receptor Agonists by Fokina, E. A., Derkach, K. V., Bakhtyukov, A. A., Sorokoumov, V. N., Lebedev, I. A., Morina, I. Yu, Shpakov, A. O.

“…Human chorionic gonadotropin (hCG) and luteinizing hormone (LH) are widely used for the treatment of reproductive disorders and for controlled ovulation…”
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Effect of Different Luteinizing Hormone Receptor Agonists on Ovarian Steroidogenesis in Mature Female Rats by Bakhtyukov, A. A., Derkach, K. V., Fokina, E. A., Lebedev, I. A., Sorokoumov, V. N., Bayunova, L. V., Shpakov, A. O.

“…In clinical practice, ovarian steroidogenesis is stimulated and ovulation is induced using such gonadotropin preparations as human chorionic gonadotropin (hCG)…”
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Structure and Dynamic and Nonlinear Optical Properties of Hg2F2 Crystals by Roginskii, E. M., Markov, Yu. F., Lebedev, A. I.

“…The structure of the Hg 2 F 2 compound was studied experimentally and theoretically within the density functional theory. X-ray diffraction studies enabled us…”
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Structural position and charge state of nickel in SrTiO3 by Sluchinskaya, I. A., Lebedev, A. I., Erko, A.

“…The properties of nickel-doped strontium titanate are studied using X-ray diffraction and XAFS spectroscopy. It is shown that, independently of preparation…”
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The Effect of Metformin Therapy on Luteinizing Hormone Receptor Agonist-Mediated Stimulation of Testosterone Production and Spermatogenesis in Diabetic Rats by Bakhtyukov, A. A., Derkach, K. V., Stepochkina, A. M., Sorokoumov, V. N., Bayunova, L. V., Lebedev, I. A., Shpakov, A. O.

“…The functional restoration of the male reproductive system in type 2 diabetes mellitus (DM2) is one of the urgent global challenges in modern endocrinology…”
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