scholarly journals ASSESSMENT OF PHYTOPLANKTON AS FOOD RESERVE IN MIDDLE CASPIAN

2020 ◽  
Vol 2020 (3) ◽  
pp. 96-102
Author(s):  
atyana Nikolaevna Zimina T ◽  
Alevtina Georgievna Ardabyeva ◽  
Andrey Vyacheslavovich Kotelnikov
Keyword(s):  
Small Cell ◽  
Layer By Layer ◽  
Ecological Groups ◽  
Qualitative Composition ◽  
Freshwater Algae ◽  
Fish Food ◽  
Food Reserve ◽  
Intensity Of Development ◽  
Favorable Conditions ◽  
Positive Effect

The paper considers the specific features of development of the qualitative composition and ecological groups of plankton algae in the Middle Caspian in the summer of 2019. The yearly dynamics of biomass and the number of algae in the sections of Makhachkala - Cape Sagyn-dyk, Derbent - Cape Peschanny, Divichi - Kenderly Bay has been examined. During the study period 109 samples were collected and examined and 110 taxonomic units of algae were found, with diatoms always prevailing. The structure-forming role belonged to freshwater algae (37 %), which became characteristic of this part of the sea. The biomass and number of phytoplankton in the Middle Caspian made 12.9 million copies/m3 and 166.56 mg/m3, respectively. The layer-by-layer distribution of biomass was determined by the intensity of development of the diatomaceous alga Pseudosolenia calcar-avis. The most favorable conditions for vegetation of dinophytic feed organisms were formed in the western (sections of Makhachkala - Cape Sagyndyk, Derbent - Cape Peschanny) and central (Divichi - Kenderly Bay) parts of the section in a layer of 0-25 m, which presumably has a positive effect on the development of planktonic organisms. Small-cell forms of algae dominated, which is an important aspect in the formation of the fish food reserve.

scholarly journals ПЕРСПЕКТИВЫ ПРИМЕНЕНИЯ АДДИТИВНЫХ ТЕХНОЛОГИЙ В АВИА- И РАКЕТОСТРОЕНИИ

2020 ◽  
pp. 59-65
Author(s):  
Сергей Викторович Аджамский ◽  
Анна Андреевна Кононенко ◽  
Ростислав Вячеславович Подольский
Keyword(s):  
Mechanical Properties ◽  
Lower Surface ◽  
Topological Optimization ◽  
Layer By Layer ◽  
Inclined Surfaces ◽  
Computer Based ◽  
Thin Walled ◽  
Traditional Manufacturing ◽  
Favorable Conditions ◽  
Automation Tools

SLM technology is an innovative production of products of complex geometric shapes through layer-by-layer material building-up based on a computer-based CAD model using special 3D printers. With the help of SLM technology, they create precise metal products for work as part of components and assemblies for critical purposes (for example, aerospace). SLM successfully replaces traditional manufacturing methods, since products built using SLM technology often surpass the properties of products made using traditional technologies.This technology has several advantages for the application and manufacture of aerospace products: the possible production of thin-walled parts, simplifying their production, by reducing the number of technological transitions, using computer programs and automation tools to optimize the product design, which opens up the possibility of reducing the weight of aircraft structural elements apparatuses.One of the opportunities that SLM technology allows to realize is the replacement of solid metal elements with openwork structures, ensuring a sufficient level of mechanical properties. The use of openwork designs and topological optimization can make it possible to lighten a part up to 50 %. However, it is important to ensure the necessary level of mechanical properties due to the reasonable design of elements: mesh thickness, cell size, and shape, etc. Besides, in aircraft and rocket science, often additive technologies are used to create products with internal channels of thin-walled products with inclined surfaces. Therefore, it is important to ensure the quality of thin-walled surfaces with different angles of inclination.Printing was carried out on a 3-D Alfa-150 printer manufactured by ALT Ukraine LLC. As part of the experiment, samples were made in the form of a cube with the internal structure of the honeycomb and a solid cube with equal dimensions in different modes. The second group of samples in the form of plates with different angles of inclination relative to the Z-axis (0°, 30°, 45°).When practicing printing modes with internal thin structures, it was found that under adverse conditions, fusion conditions were created, the metal fell through on a layer of powder, overhanging elements formed, and the lower surface with high roughness. Under favorable conditions, the lower surface is smooth, the layers are clearly defined, correspond to the given geometry of the model. An experiment was also performed to test the printing modes of flat samples with different angles of inclination. It has been established that different modes are optimal for different tilt angles. Thus, it was found that SLM technology allows you to create thin-section elements with maximum accuracy, and to produce parts with a unique geometric structure. According to the developed process parameters, parts of complex shape for operation in aerospace engineering can be created.

scholarly journals EFFECTS OF CULTIVAR AND MULCHING ON THE POTATO YIELD

AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Jasmina OLJAČA ◽  
Zoran BROĆIĆ ◽  
Nebojša MOMIROVIĆ ◽  
Dobrivoj POŠTIĆ ◽  
Danijel PANTELIĆ ◽  
...  
Keyword(s):  
Growth And Development ◽  
Tuber Yield ◽  
Irrigation System ◽  
Potato Yield ◽  
Plant Growth And Development ◽  
Organic Mulch ◽  
Straw Mulch ◽  
Genetic Potential ◽  
Favorable Conditions ◽  
Positive Effect

Plant growing technology involves usage of complex agrotechnical operationsaimed at creating favorable conditions for plant growth and development, that is,for better exploitation of cultivar genetic potential. Effects of mulching with whiteand black polyethylene foil, and organic mulch (straw) were studied in three, dripirrigatedpotato cultivars: Carrera (early), Laura (medium early) and Agria(medium late). Treatments were arranged in a randomized complete block designwith four replications at the site of Zemun Polje, Serbia (44°88'N, 20°35'E, 79 ma.s.l.) in three consecutive years (2011–2013). Results obtained on the variantswith different mulch materials were compared with results attained on the plot withbare soil (control). The highest average number of tubers per plant was determinedin cv. Laura’s control variant (12.0), while the lowest average number of tuberswas determined in the cv. Agria with white mulch (8.2). The highest average tubermass (146.3 g) and total tuber yield (59.6 t ha-1) was determined in cv. Carrerasubjected to the straw mulch treatment. The lowest average tuber mass and tuberyield was found in the cv. Agria on the variant with black polyethylene foil (83 gand 27.8 t ha-1). The results obtained in our study indicate positive effect of thecombination of straw mulch and irrigation on the productivity of potato. Moderngrowing technology, which includes the regulation of temperature in the surfacesoil layer by combination of soil mulching, drip irrigation system, and the use ofadequate genotypes, can result in high potato yield.

scholarly journals CHANGE OF DAIRY PRODUCTIVITY IN COWS WHEN REPLACING SOY GRAINS IN DIETS WITH EXTRUDED LUPINE

2021 ◽  
Author(s):  
Zinaida Fedorova ◽  
Vladimir Zarudnyy
Keyword(s):  
Mass Fraction ◽  
Control Group ◽  
Qualitative Composition ◽  
Entire Study Period ◽  
Milk Productivity ◽  
Entire Study ◽  
To Receive ◽  
Positive Effect ◽  
Experimental Group

The positive effect of extruded lupine grain in the composition of compound feed on the increase in milk productivity of cows was established, which made it possible to receive an additional 112 kg of milk and profit from the sale of milk — 1635 rubles on average per 1 head for the entire study period (75 days). An improvement in the qualitative composition of milk was revealed: the mass fraction of fat in cows in the experimental group was increased to 4.13%, compared to 3.87% in the control group; the mass fraction of protein in cows in the experimental group was 3.38%, while in cows in the control it was 3.27%.

scholarly journals Evaluation of treatment efficacy of tyrosine kinase inhibitors in rare single EGFR Exon 21 L861Q mutation; single center experience.

2021 ◽  
Author(s):  
pınar Gürsoy
Keyword(s):  
Lung Cancer ◽  
Overall Survival ◽  
First Generation ◽  
Kinase Inhibitors ◽  
Growth Factor Receptor ◽  
Small Cell ◽  
Survival Times ◽  
Small Cell Lung ◽  
Epidermal Growth ◽  
Positive Effect

Abstract Aim:Epidermal growth factor receptor (EGFR) mutations are the second most common oncogenic driver event in non-small cell lung cancer (NSCLC).We aimed to compare the first generation erlotinib treatment with the second generation afatinib treatment in patients with Non-small Cell Lung Cancer (NSCLC) with Epidermal growth factor receptor (EGFR) Exon 21 L861Q mutation.Patients and Methods:Progression-free survival (PFS) and overall survival (OS) of 30 NSCLC patients treated with erlotinib or afatinib due to single EGFR L861Q positivity were compared retrospectively.Results:There were twenty-three patients in the erlotinib arm and seven patients in the afatinib arm. Median PFS was 12.8 months in the erlotinib group and 9.3 months in the afatinib group. Median overall survival in erlotinib and afatinib groups were 77.9 months and 30.3 months, respectively. No statistically significant difference was found in the comparison of these survival times.Conclusion:Survival times of erlotinib and afatinib treatment are similar in patients with a single EGFR L861Q mutation. In patients receiving tyrosine kinase inhibitors (TKI) treatment, female gender has a positive effect on PFS and being none-smoker has a positive effect on OS. In patients with rare mutation Exon 21 L861Q positivity both first-generation and second-generation TKIs should be considered.

scholarly journals Influence cryo preservation on viability of Chamomilla reticuta’ seeds varia «Podmoskovnaya» and chemical composition of essential oil

2020 ◽  
Vol 99 (3) ◽  
pp. 100-108
Author(s):  
Aibek Ramasanov ◽  
◽  
Saltanat Tleukenova ◽  
Larissa Babeshina ◽  
Erlan Suleimen ◽  
...  
Keyword(s):  
Essential Oil ◽  
Liquid Nitrogen ◽  
Low Temperatures ◽  
Component Composition ◽  
Quantitative Composition ◽  
Qualitative Composition ◽  
Mass Spectrometric Detector ◽  
Open Ground ◽  
Cryo Preservation ◽  
Positive Effect

The article examines the effect above critical low temperatures on the quantitative and qualitative composition of essential oil of Chamomilla reticuta varia «Podmoskovnaya». Seeds of the studied plant species were treated with ultra-low temperature (–196 ºC) before planting in open ground and the viability of the seeds was determined under laboratory conditions. Cryo processing was carried out by direct immersion of seeds in plastic tubes in Dewar vessels with liquid nitrogen. Cryoprotectants were not used. Cryo processing duration was 1 hour, 3 hour and step freezing. Step freezing of seeds was performed in the following sequence: 1 hour in the refrigerating compartment (+ 4 ºC), 1 hour in the freezing compartment (–8 ºC) and 1 hour in liquid nitrogen. In all cases of the experiment, a slow thawing regime was applied. After cryogenic exposure, the material was planted into open ground. Recovery of essential oil was carried out by hydro distillation on a Clevenger apparatus. The component composition of the essential oils was determined on a Clarus-SQ 8 gas chromatograph with a mass spectrometric detector. As a result of the study, it was found that the effect of ultra-low temperatures on the seed material of the Moscow Region chamomile did not negatively affect the quantitative and qualitative composition of the essential oil of the pharmacy chamomile. On the contrary, this method of treating seeds has had a positive effect on the quantitative composition of the essential oil during the growth of the plant and in some cases has even increased the percentage of certain components, such as αfarnesene, β-farnesene, spatulenol, cis-en-in-dicycloether.

scholarly journals RADIATION-INDUCED EFFECTS IN SILICON

2019 ◽  
pp. 35-43
Author(s):  
G.P. Gaidar ◽  
M.B. Pinkovska ◽  
M.I. Starchyk
Keyword(s):  
Thin Layer ◽  
Energy Release ◽  
Structural Properties ◽  
Long Range ◽  
Large Energy ◽  
Structural Defects ◽  
Layer By Layer ◽  
Light Ions ◽  
Radiation Induced ◽  
Favorable Conditions

Results of complex studies of the structural properties of silicon irradiated with light ions of megaelectronvolt energies by fluences greater than 1016 cm–2 are presented. It was found that during irradiation under conditions of large energy release in thin layer of crystal, the favorable conditions can be created for the controlled introduction of structural defects and the appearance of the effects of ordering and long-range. The possibility of layer-by-layer modification of the properties of silicon at depths up to 780 μm under irradiation with ions was established that can be used to provide the actual needs of micro- and nanoelectronics.

scholarly journals Is there a positive effect of participation on a clinical trial for patients with advanced non-small cell lung cancer?

2008 ◽  
Vol 45 (4) ◽  
pp. 158 ◽  
Author(s):  
S Rajappa ◽  
S Gundeti ◽  
S Uppalapati ◽  
S Jiwatani ◽  
A Abhyankar ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Clinical Trial ◽  
Small Cell Lung Cancer ◽  
Cell Lung Cancer ◽  
Small Cell ◽  
Small Cell Lung ◽  
Positive Effect

scholarly journals ОПТИМІЗАЦІЯ ТАКТИКИ ВЕДЕННЯ ВАГІТНОСТІ ПІСЛЯ ГРИПУ, ПЕРЕНЕСЕНОГО НА РАННІХ ТЕРМІНАХ ВАГІТНОСТІ

World Science ◽  
2020 ◽  
pp. 1-7
Author(s):  
Камінський В’ячеслав Володимирович ◽  
Коломійченко Тетяна Василівна ◽  
Жданович Олексій Ігоревич ◽  
Деркач Андрій Дмитрович ◽  
Сербенюк Анастасія Валеріївна
Keyword(s):  
Vitamin D ◽  
Placental Insufficiency ◽  
Prevention Measures ◽  
Negative Effects ◽  
Hormonal Function ◽  
Treatment And Prevention ◽  
Treatment Measures ◽  
Favorable Conditions ◽  
Nk Cytotoxicity ◽  
Positive Effect

The obtained results created a theoretical basis for optimizing the tactics of pregnancy management in such patients by applying a pathogenetically sound set of treatment and prevention measures. The proposed complex includes assessment of risk factors, additional examinations, monitoring of the condition of the pregnant woman and fetus, treatment measures to prevent placental insufficiency and reduce the negative effects of hyperimmune response (aspirin, dipyridamole, progestogens, intravenous immunoglobulin, vitamin D).To test the effectiveness of the proposed set of treatment and prevention measures, 80 pregnant women were selected after influenza, transmitted in early pregnancy, with a high risk of placental dysfunction. Patients were randomly divided into 2 groups: 40 women whose pregnancies were performed according to optimized tactics (main group) and 40 women (comparison group) whose pregnancies were managed according to the clinical protocols of the Ministry of Health.Testing the effectiveness of the proposed set of measures showed its positive effect on hormonal function of the placenta (normalization of progesterone and estradiol levels), immune status (reduction of NK-cytotoxicity, balance of cytokine profile), elimination of vitamin D deficiency and reduction of procoagulation potential of the hemostasis system.Creating favorable conditions for the development of gestation has reduced the incidence of placental insufficiency by almost 2 times to 35.0% vs. 62.5%. Against the background of the recommended tactics of pregnancy after influenza, the frequency of complications of pregnancy, disorders of the fetus and newborn has decreased significantly.

Sign in / Sign up

Export Citation Format

Share Document