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PLACE OF 5α-REDUCTASE IN THE THERAPY FOR BENIGN PROSTATIC HYPERPLASIA
C. Novac,N. Suditu,B. Novac,V.D. Radu
Jurnalul de Chirurgie , 2007,
Abstract: Twelve years ago, finasteride, the first 5α-reductase inhibitor, was introduced as drug therapy for benign prostatic hyperplasia, and more recently dutasteride has emerged as an alternative. The efficacy, safety and ability of these 5α-reductase inhibitors to reverse the natural progression of benign prostatic hyperplasia have been convincingly demonstrated and both drugs are now welt established in the medical armamentarium against the disease. Given the multifactorial etiology of benign hyperplasia, the usefulness of 5α-reductase inhibitors in combination with a adrenergic blockers has also been investigated and justified in select patients. Wider applications of 5α-reductase inhibitors are also emerging, though their perhaps most important new role as chemopreventive agents remains unclear.
The relationship of value orientations in older adolescents with high status position in a student group
V.D. Kuteynikova
Psihologi?eskaa Nauka i Obrazovanie , 2013,
Abstract: We present study results of social and psychological characteristics of group and individual value orientations in older adolescents. We considered the main criteria to be content and orientation of values, and level of value-oriented student group unity. The study involved 86 high school students of IX-XI grades of Moscow schools. We used a set of socio-psychological methods and instructional techniques: sociometry, referentometry, a technique of defining the informal intragroup power structure in a contact community, "Values and orientation of the individual" method by L.N.Silantieva, a method of determining the degree of value-orientation of group unity. The results obtained show that in high school there is a relationship between the student's status in the group and his system of individual and group value orientations. The most significant differences among students with different status position were detected in the content and direction of value orientations.
Condition of the secretory apparatus of the atrial cardiomyocytes in different regions of the atrium of the rats.
Mishalov V.D.
Морфолог?я , 2007,
Abstract: The purpose of work - definite of the basic morphological attributes of the secretory apparatus of the atrial cardiomyocytes with a quantitative analysis of a condition of the specialized secretory cells in different regions of the atrium of the rats. The ultrastructural and histochemical methods were used in research for studying the right and left atriums, right and left auricles of hearts, and also interatrial septa of 28 hearts of rats. It has been shown formation secretory granules and their moving from an internal cellular sites to a subsarcolemal zone was realized discretely, the certain portions in groups of 10-25 granules in everyone. Degranulation contents of granules occurs not only in a zone, which lying to a cellular membrane, but also in deep regions of sarcoplasma of cardiomyocytes. The atrium myocardium consists of two subpopulations (types) contractive cells which differ under morphological characteristics. The highest secretory activity characterizes the myocardium of the right auri-cle; the numerical density of specific granules in the left auricle and a free wall of the right auricle was been smaller on average in 1,5 times than in the right auricle; the density of granules in the myocardium of the left atrium and interatrium septa was been smaller in 4 times than in the right auricle.
Quark-Hadron Mixed Phase
Toneev V.D.
EPJ Web of Conferences , 2010, DOI: 10.1051/epjconf/20100702005
Abstract: The concept of a mixed quark-hadron phase is considered. Dynamics of heavy-ion collisins in a large energy range is outlined. Various possible probes of the mixed phase manifestation as well as modern status of experimental signals are discussed.
De industri le voorsprong van Cura ao
J. v.d. Walle
Nieuwe West-Indische Gids , 1948,
Abstract:
A collection of Book Reviews for Volume 32, Issue 7 & 8
S. P. v.d.W
Koers : Bulletin for Christian Scholarship , 1965, DOI: 10.4102/koers.v32i7&8.1438
Abstract: Van hierdie skrywer het daar gedurende 1963 drie werke verskyn, nl. Agorob — Kind van die Duine, Jagter van die Duine en Gaub, almal met die Boesman as onderwerp. Die skrywer put uit sy eie lewenservaring en intieme kontak met die wilde duinkinders”, saam met wie hy as jong seun rond- geswerf het. Al hierdie werke bevat dan ook een na die ander ’n rykdom van kennis oor die Boesman se groot vindingryk- heid en taaiheid in die bestaanstryd, sy wette, sy godsdiens, sy oorgelewerde vertellings en folklore wat elke geslag Boes- man moet oordra aan die volgende. Verskillende figure word telkens teruggevind in die opeenvolgende verhale.
Identificación de anomalías de amonio por espectrometría de reflectancia: Implicancias para la exploración minera Identification of ammonium anomalies by SWIR reflectance spectroscopy: Implications for mining exploration
M. Godeas,V.D. Litvak
Revista de la Asociación Geológica Argentina , 2006,
Abstract: Se da a conocer la presencia de anomalías de amonio en depósitos mineralizados con alteración hidrotermal en la Argentina. Estas anomalías están dadas por la sustitución del ion potasio por el radical amonio (NH4+) en ciertos feldespatos, arcillas y sulfatos; esta sustitución no produce cambios físicos en los minerales ni en las rocas hospedantes. Los minerales portadores de amonio se han hallado en depósitos con alteración hidrotermal con mineralización metalífera. El ion amonio es especialmente sensible al método de espectrometría de reflectancia SWIR, constituyendo así un medio ideal, fácil y valioso para su detección. Aunque los minerales de amonio no siempre se asocian a mineralización metálica, se los puede utilizar como guía de exploración, constituyendo así una técnica prospectiva de gran utilidad en depósitos metalíferos en general. The existence of ammonium anomalies in mineralized deposits in Argentina is presented. These anomalies are given by the substitution of potassium ion by ammonium ion in certain feldspars, clay minerals and sulfates. This substitution doesn't produce physical changes either in the minerals or the host rocks. Ammonium-bearing minerals have been found in several hydrothermally altered metallic deposits. Ammonium ion is specially sensible to SWIR reflectance spectroscopy method, so it became an ideal, easy and valuable tool for ammonium anomalies detection. Although ammonium-bearing minerals are not always associated with metallic ore, they can be used as an exploration guide, being thus a very useful prospective method for metallic deposits in general.
Estratigrafía y facies volcánicas y volcaniclásticas de la Formación Valle del Cura: magmatismo paleógeno en la Cordillera Frontal de San Juan Stratigraphy and volcanic facies of the of the Valle del Cura Formation: Paleogene volcanism in the Frontal Cordillera of San Juan
V.D. Litvak,S. Poma
Revista de la Asociación Geológica Argentina , 2005,
Abstract: En la región del Valle del Cura, Cordillera Frontal de San Juan, aflora una espesa secuencia de rocas volcánicas y volcaniclásticas, en facies piroclásticas y epiclásticas, que representa el desarrollo de un importante episodio volcano-sedimentario eoceno-oligoceno inferior. Esta unidad, la Formación Valle del Cura, incluye espesos paquetes de tobas, conglomerados gruesos, areniscas líticas medianas a gruesas, areniscas volcánicas y escasas pelitas. Los niveles volcánicos están formados por flujos lávicos e ignimbritas de alto grado de composiciones riolíticas, las cuales representan flujos piroclásticos de alta temperatura y alto grado de soldadura. La Formación Valle del Cura también incluye espesos niveles de flujos piroclásticos primarios formados por tobas cristalinas, líticas y/o vítreas, tobas lapillíticas e inclusive facies gruesas como aglomerados y brechas volcánicas. Vinculados a estos depósitos piroclásticos se interdigitan facies epiclásticas de composición dominante volcánica, que representan el retrabajo del material piroclástico primario. Los depósitos ignimbríticos muestran evidencias que indican su proximidad respecto al centro de emisión, el cual se encontraría en el extremo sur de la cordillera de la Brea. Esta secuencia se puede correlacionar con secuencias equivalentes que afloran hacia el norte en el río de la Sal y en las nacientes del río Blanco, en Macho Muerto, y cronológicamente, con los intrusivos mesosilíceos de la Unidad Bocatoma que afloran en territorio chileno -a la misma latitud- y que están emplazados a lo largo del frente magmático eoceno. En constraste, la Formación Valle del Cura representa una intensa actividad volcanodesimentaria sinorogénica depositada en una cuenca de retroarco. A thick volcanic and volcaniclastic sequence, which includes epiclastic and pyroclastic facies, was recognized in the Valle del Cura region in the Frontal Cordillera of San Juan. The Valle del Cura Formation represent an important Eocene volcano-sedimentary episode composed of thick beds of tuff, coarse conglomerate, coarse to middle lithic sandstone, volcanic sandstone and scarce shale. The volcanic levels include rhyolitic lavas and high-grade ignimbrites that represent strongly welded and high-temperature pyroclastic flows. The formation also includes thick pyroclastic flow deposits composed of crystalline, lithic and/ or glassy tuff, lapilli tuff, and even coarse facies such as volcanic breccia and agglomerate. Volcanic epiclastic facies interbedded within the pyroclastic deposit represent the reworked primary pyroclastic material.
Laser and Surgical Treatment of Retinal Thromboses Outcomes
V.D. Zakharov,О.V. Каshtan,I.G. Osokin
Sovremennye Tehnologii v Medicine , 2012,
Abstract: Currently there is no established opinion concerning the treatment of thrombosis of central vein of retina and its branches. Some clinical success was achieved in intra-vitreal administration of corticosteroids (triamcinolone acetonide) and inhibitors of vascular endothelial growth factor (bevacizumab, ranibizumab). Surgical techniques, such as radical optic neurotomy and sheathotomy, do not proved their clinical efficacy and no longer used. Many researchers emphasize the effectiveness of vitrectomy. Vitrectomy with separating and removing the posterior hyaloids membrane and vitreous cortical layers provides the recovery of vitreal plane transparency and contributes to eliminating inflammatory mediators and vascular growth factors from it. It has positive effect on macula post-thrombotic edema. Intra-operative laser coagulation of retina increases oxygenation of intraocular structures and reduces production of vascular growth factors. The search of the most effective and safe modalities of treatment of retinal thromboses outcomes is being continued.
Polymorphism of mitochondria in rat auriclar contractive cardiomyocites under the chronic alcoholic intoxication
Mishalov V.D.,Dunaev A.V.
Морфолог?я , 2007,
Abstract: A number of the questions related to the reactions of mitochondrial apparatus of atrial cardiomyocites under the chronic alcoholization were dissolved in this study. The purpose of the study was to analyze morphological reactions of mi-tochondrial apparatus of atrial contractive cardiomyocites in rats on the chronic alcoholic poisoning. Modeling of the chronic alcoholic poisoning in rats was realized by daily introduction of ethyl alcohol per os in dosage 2-3,5 mg/g of rat weight dur-ing 30 days. Morphological research comprised both light and electronic microscopy of myocardium of right and left atria, right and left auricles, and also interatrial septum. Stereological estimation of several indexes was carried out: the compact-ness of mitochondria, numeral compactness of mitohondria, surface area of external mitochondrial membrane, compactness of mitochondrial cristae, number of mitochondrial cristae, surface area of internal mitochondrial membrane, degree of cristae orientation, coefficient of mitochondrial sphericity, volume of mitochondrium, quantitative correlation of types of mitochon-dria. It was shown that the reaction of different types of mitochondria on development of chronic alcoholization in atrial con-tractive cardiomyocites depends on the structural-metabolic type of mitochondria. Under the chronic alcoholic poisoning the moderate diffuse reduction of mitochondrial apparatus of contractive cardiomyocites takes place that is accompanied by the prolonged renewal of high-energy mitochondria and causes energetical limitation of contractive function of atrial myocar-dium.
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