On the effect of structural disorders on the Urbach’s tails of ternary chalcopyrite semiconductors and related ordered defect compounds

2020 ◽  
Vol 127 (3) ◽  
pp. 035703 ◽  
Author(s):  
Syed M. Wasim ◽  
Giovanni Marín ◽  
Rigoberto Marquez ◽  
Carlos Rincón
Keyword(s):  
Chalcopyrite Semiconductors ◽  
Structural Disorders

Clinical, morphological and biochemical signs of polymycotoxicosis in highly productive cows

2020 ◽  
pp. 14-17
Author(s):  
Irina A. Shkuratova ◽  
◽  
Lyudmila I. Drozdova ◽  
Aleksander I. Belousov ◽  
Keyword(s):  
Metabolic Disorders ◽  
Hepatorenal Syndrome ◽  
Morphological Changes ◽  
Clinical Manifestations ◽  
The Body ◽  
Feed Mixture ◽  
Milk Productivity ◽  
Structural Disorders ◽  
Increased Sensitivity ◽  
Penicillium Spp

Mycotoxicological monitoring of forages shows that the problem of mycotoxicosis has been relevant for several decades. Minimal doses of mycotoxins in feed lead to a decrease in milk productivity, increased sensitivity to infectious and non-infectious diseases. When several mycotoxins enter the body simultaneously, a synergistic effect develops, causing a significant increase in toxicity. Feed contaminated with several types of fungi and their toxins is dangerous for dairy cattle. It was found that the feed mixture contained the types of associations of Aspergillus spp. fungi + Fusarium; Aspergillus spp. + Penicillium spp. + Mucor spp; Fusarium + Penicillium; Mucor spp. + Fusarium + Ustilaginales. Pathogenetic features of metabolic and morphological changes in highly productive cows with polymycotoxicosis were studied. Feeding food contaminated with various metabolites of mold fungi leads to the development of signs of chronic toxemia in animals. Clinical manifestations are the development of diarrhea and dehydration, with a decrease in milk productivity. Metabolic disorders feature the development of an inflammatory process, metabolic acidosis, hyperfermentonemia, with an increase in the amount of creatinine and urea in the blood serum. Metabolic signs indicate the development of hepatorenal syndrome due to structural disorders of the liver and kidneys. Histological signs of polymicotoxicosis are intracapillary and hemorrhagic glomerulonephritis, hepatocyte micronecrosis, and proliferation of connective tissue stroma cells, which leads to the development of atrophic cirrhosis in the interstitial and circular phases.

Mechanisms of intrinsic stresses generation in sputtered amorphous Si: H films

1995 ◽  
Vol 10 (11) ◽  
pp. 2736-2741 ◽  
Author(s):  
Hiroki Takahashi ◽  
Hirotoshi Nagata ◽  
Haruki Kataoka ◽  
Hiroshi Takai
Keyword(s):  
Compressive Stress ◽  
Volume Expansion ◽  
Bond Angle ◽  
Film Deposition ◽  
The Other ◽  
Structural Disorders ◽  
First Results ◽  
Amorphous Si ◽  
Deposition Processes ◽  
Deposition Conditions

The relation between stresses of sputtered a-Si: H films and the film deposition conditions are investigated. The film stresses change from a large compressive stress of 1000 MPa to an almost stress-free one. They arise from distortions of the Si network via the following two mechanisms. The first results from the inclusion of the Ar-sputtering gas into the films, which provides volume expansion of the film network. The other is due to structural disorders, such as a deviation of the Si bond angle which is generated during the deposition processes. Moreover, it is found that Si–H terminations in the films contribute to reducing the film stresses because the Si–H termination breaks and relaxes the Si network. These effects can be realized as long as the Si–H terminations are homogeneously distributed in the films.

scholarly journals Time-course evaluation of intestinal structural disorders in a porcine model of intra-abdominal hypertension by mechanical intestinal obstruction

PLoS ONE ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. e0191420 ◽  
Author(s):  
Ester Párraga Ros ◽  
Laura Correa-Martín ◽  
Francisco M. Sánchez-Margallo ◽  
Irma Eugenia Candanosa-Aranda ◽  
Manu L. N. G. Malbrain ◽  
...  
Keyword(s):  
Intestinal Obstruction ◽  
Time Course ◽  
Porcine Model ◽  
Course Evaluation ◽  
Mechanical Intestinal Obstruction ◽  
Structural Disorders ◽  
Abdominal Hypertension

scholarly journals Etiopathogenetic aspects of central (hypogonadotropic) hypogonadism in female

2019 ◽  
Vol 10 (4) ◽  
pp. 15-27
Author(s):  
A. S. Loktionova ◽  
I. A. Ilovayskaya
Keyword(s):  
Genetic Basis ◽  
Functional Form ◽  
Current Knowledge ◽  
Hypogonadotropic Hypogonadism ◽  
Biological Action ◽  
Social Concern ◽  
Human Female ◽  
Intact State ◽  
Structural Disorders ◽  
Infertile Couples

Central hypogonadism (CH) is a rare endocrine disorder caused by the disfunction of production, secretion and/or biological action of gonadotropin-releasing hormone (GnRH), which is the main hormonal regulator of hypothalamo-pituitarygonadal axis in human. Female CH is important medical and social concern due to large amount of infertile couples. Etiological structure of this condition is heterogeneous and diff ers between congenital and acquired forms. Congenital forms have a genetic predisposition: currently about 50 genes associated with CH have been found. However, genetic basis can be identifi ed just in half of CH cases. Speaking about acquired forms of CH, important to pay attention on hypothalamo-pituitary area condition. In case of intact state the functional form of CH can be diagnosed, the presence of structural disorders in this area speaks in favor of the organic cause of CH. In this review are summarized current knowledge in the fi eld of etiology and pathogenesis of female central hypogonadism.

scholarly journals Influence of seasonal changes on the karyotype stability of Ukrainian Black and White dairy cows

2020 ◽  
Vol 22 (93) ◽  
pp. 29-34
Author(s):  
N. Y. Temekh ◽  
L. F. Starodub
Keyword(s):  
Seasonal Changes ◽  
Age Groups ◽  
Summer Season ◽  
Black And White ◽  
Structural Disorders ◽  
Different Seasons ◽  
The Stability ◽  
The Impact ◽  
Dairy Breed ◽  
Karyotype Stability

Of the total dairy cattle, 49 % belong to the Ukrainian black-and-white dairy breed. Animals are demanding to the conditions of detention, so the aim of the study was to study the impact of seasonal changes in the environment on the stability of the karyotype of cows of three age groups (first-born, adult and cows 8–10 years). The variability of the karyotype of the studied animals in different seasons of the year was manifested in the form of quantitative and structural disorders of chromosomes. Of the total dairy cattle, 49 % belong to the Ukrainian black-and-white dairy breed. Animals are demanding to the conditions of detention, so the aim of the study was to study the impact of seasonal changes in the environment on the stability of the karyotype of cows of three age groups (first-born, adult and cows 8–10 years). The variability of the karyotype of the studied animals in different seasons of the year was manifested in the form of quantitative and structural disorders of chromosomes. In primiparous women, the most pronounced genomic variability (aneuploidy) was observed in summer and winter and was 16.4 % and 8.8 %. In summer, this variability was more than twice the limit of spontaneous chromosomal variability. The highest percentage of structural chromosome abnormalities (chromosomal breaks) in cows of three age groups was observed in winter and was 2.5 %, 2.8 %, 3.0 %, respectively, and did not exceed the limit of spontaneous mutagenesis characteristic of cattle. An increased proportion of lymphocytes with a micronucleus in first-borns and cows aged 8–10 years (5.6 ‰, 6.4 ‰, respectively) was observed in the summer. The increased proportion of dinuclear lymphocytes appeared in the first-born in the summer season and amounted to 7.6 ‰ (at P > 0.99), and in cows 8–10 years, this variability in the summer season was 6.2 ‰, in winter – 6.7 ‰ with a statistically significant difference (P > 0.95) between the spontaneous level of cytogenetic variability. The association between karyotype stability of the studied animals and seasonal environmental factors was determined using a correlation coefficient (r). A significant positive correlation was found between aneuploidy and air temperature in primiparous and cows aged 8–10 years, relative humidity, precipitation and wind strength and chromosomal gaps in primiparous and adult cows, atmospheric pressure, relative humidity and asynchronous divergence. in adult cows and cows aged 8–10 years. A positive reliable associative dependence of the appearance of micronucleus lymphocytes and dinuclear lymphocytes on the amount of precipitation and wind strength in this area in primiparous and adult cows was established.

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