The article analyzed one of the most effective methods in intensive garden irrigation, irrigation technology parameters as well as the dynamics of the movement of moisture. We have presented some ...results of subsurface irrigation concerning moisture dynamics in soil. The element to the horizon relatively installed inclined corner, it is installed in the scheme of the topsoil active layer wetting capillary and earthward motion. During the research, we studied both the movement and height of the wetting contour over time H , the radius of the width L , and the curve area of the irrigation norm W m 3 /ha were relatively chosen.
This article is given some information about creating intensive gardens in desert areas; saving 40%-50% of yearly water which is used in a year thanks to effective economic technologies via ...irrigating through the soil. This is also useful to save energy up to 30%-40% by absorbing the sunshine with the help of the special modes. In this research we intended to prove that organizing irrigation system in the way of using underground waters and in this process the water enriched by mineral elements, fertilizer can be saved up to 25-35% on account of moistening plant roots through the pegs straightly which are devices specially produced. Moreover, the growth of plants is meliorated and the harvested stock will be increased up to 20-25%. This method can be used in both setting half scrubby intensive gardens in such kind of areas where water is insufficient and making use of energy-saving technologies in the future.
Rapid development and implementation of modern information and communication technologies has led to a new phase of economic, scientific and technological progress. However, there is no mechanism to ...ensure social systems effective management based on the information technologies use due to socio-economic inequality among the population of the Russian Federation, preventing all segments of the population from benefiting scientific and technological progress results, which has been exacerbated by the COVID-19 pandemic. The aim of the study is to identify the modern information technologies role in improving the living standard and the population life quality, in particular, in overcoming the working population poverty. The article analyses foreign and domestic research on this issue over the past five years. The pandemic impact on social structures, in particular the labour market and employment, has been considered. The growing importance and social networks role in public life and their use serious potential to solve the problems under study have been noted. The authors carried out a sociological survey in the Republic of Bashkortostan, on the basis of which made conclusions: modern society is characterised by the information inequality problem, which is closely linked to the economic inequality problem, which will be exacerbated by the modern information and communication technologies development; the computer illiteracy problem and the close relationship between income level and knowledge, skills in information and communication technologies, English language skills were identified among residents. The research results highlight the need to implement modern information technologies skills into poverty alleviation programmes.
Abstract
The Stellar Abundances and Galactic Evolution Survey (SAGES) of the northern sky is a specifically designed multiband photometric survey aiming to provide reliable stellar parameters with ...accuracy comparable to those from low-resolution optical spectra. It was carried out with the 2.3 m Bok telescope of Steward Observatory and three other telescopes. The observations in the
u
s
and
v
s
passband produced over 36,092 frames of images in total, covering a sky area of ∼9960 deg
2
. The median survey completenesses of all observing fields for the two bands are
u
s
= 20.4 mag and
v
s
= 20.3 mag, respectively, while the limiting magnitudes with signal-to-noise ratio of 100 are
u
s
∼ 17 mag and
v
s
∼ 18 mag, correspondingly. We combined our catalog with the data release 1 (DR1) of the first Panoramic Survey Telescope And Rapid Response System (Pan-STARRS, PS1) catalog, and obtained a total of 48,553,987 sources that have at least one photometric measurement in each of the SAGES
u
s
and
v
s
and PS1
grizy
passbands. This is the DR1 of SAGES, released in this paper. We compared our
gri
point-source photometry with those of PS1 and found an rms scatter of ∼2% difference between PS1 and SAGES for the same band. We estimated an internal photometric precision of SAGES to be of the order of ∼1%. Astrometric precision is better than 0.″2 based on comparison with DR1 of the Gaia mission. In this paper, we also describe the final end-user database, and provide some science applications.
Experience shows that for the irrigation of intensive gardens, various types of equipment and technologies are used, such as continuous irrigation (invasive), drip irrigation, subsurface irrigation ...and other methods. All irrigation options have some shortcomings, such as water evaporation, high water consumption, high consumption of mineral fertilizers and energy. (Research purpose) To develop an automated system for subsurface irrigation of intensive gardens with groundwater using electric pumps and solar panels, and to create a mathematical model of soil moisture distribution. (Materials and methods) Special devices shaped as pegs were designed to supply water with dissolved mineral fertilizers directly into the root system of intensive gardens. The authors investigated the pegs’ geometric parameters and the criteria for their placement in the soil, taking into account the consumption of water and nutrients. The authors examined soil mechanical composition and salinity as well as its physical and mechanical, technological properties. (Results and discussion) It was found out that the installation of the peg facilitates soil moisturizing through the central pipeline within the radius of 1.55-1.75 meters at the depth of 0.7-0.9 meters. Three-four pegs, being equidistant from each other and inclined in relation to the vertical axis by 20-30 degrees, were placed around a tree. Water consumption was determined for various irrigation methods: for furrow irrigation (control) – 1125.7 cubic meters per hectare, for continuous irrigation (invasive) – 1812.3 cubic meters per hectare, for drip irrigation – 618.6 and subsurface irrigation – 506.4 cubic meters per hectare. (Conclusions) Based on the results of the experimental study carried out in farms with intensive gardens using various irrigation methods, continuous irrigation (invasive), drip irrigation and subsurface irrigation were compared in terms of water consumption. The results show that drip irrigation and subsurface irrigation ensure less water consumption than flood irrigation, by 46 per cent and 57 per cent respectively. It was found out that subsurface irrigation ensures 57 per cent water and 25-35 per cent mineral fertilizer economy, in comparison with the other methods of providing trees with water and nutrients.
ABSTRACT
We homogeneously analyse ∼3.2 × 105 photometric measurements for ∼1100 transit light curves belonging to 17 exoplanet hosts. The photometric data cover 16 years (2004–2019) and include ...amateur and professional observations. Old archival light curves were reprocessed using up-to-date exoplanetary parameters and empirically debiased limb-darkening models. We also derive self-consistent transit and radial-velocity fits for 13 targets. We confirm the non-linear transit timing variation (TTV) trend in the WASP-12 data at a high significance, and with a consistent magnitude. However, Doppler data reveal hints of a radial acceleration of about −7.5 ± 2.2 m s−1 yr−1, indicating the presence of unseen distant companions, and suggesting that roughly 10 per cent of the observed TTV was induced via the light-travel (or Roemer) effect. For WASP-4, a similar TTV trend suspected after the recent TESS observations appears controversial and model dependent. It is not supported by our homogeneous TTV sample, including 10 ground-based EXPANSION light curves obtained in 2018 simultaneously with TESS. Even if the TTV trend itself does exist in WASP-4, its magnitude and tidal nature are uncertain. Doppler data cannot entirely rule out the Roemer effect induced by possible distant companions.
The paper presents a comprehensive analysis of new data for drilling and seismic survey of the oil and gas potential of deep-seated Paleozoic horizons of the Caspian Basin in Kazakhstan. The features ...of the development and occurrence of large Paleozoic uplifts and sedimentary strata promising for prospecting are specified. A set of geological and geophysical methods was applied, and magnetic and gravitational anomalies of potential fields were analyzed in the southern, southeastern, and eastern marginal parts of the southeastern sector of the Caspian Basin. This is supplemented with new data obtained by a set of reconnaissance methods, and the section attributed to the Paleozoic at depths up to 5.5–8.0 km and its Devonian–Lower Carboniferous sequence are specified. New data were obtained on the area of distribution and occurrence of Upper Devonian and Lower Carboniferous sediments, geological conditions and prerequisites were revealed that refined the trace of the pre-Devonian complex and of the Lower–Middle Devonian sediments. Analysis of the distribution of large local prospecting objects has confirmed the presence and development of megauplifts, which are zones of hypsometrically elevated Devonian–Lower Carboniferous sediments. In the contour of the megauplift, structural elements have developed that are less significant, but promising in terms of hydrocarbon content. Based on the results of studying and refining the distribution patterns of large Devonian‒Lower Carboniferous objects and identifying megauplifts, it is possible to optimize regional studies in the Caspian Basin for the period of 2020–2030.
The Angstrom Project is undertaking an optical survey of stellar microlensing events across the bulge region of the Andromeda galaxy (M31) using a distributed network of 2 m class telescopes. The ...Angstrom Project Alert System (APAS) has been developed to identify candidate microlensing and transient events in real time, using data from the Liverpool and Faulkes North robotic telescopes. This is the first time that real-time microlensing discovery has been attempted outside of the Milky Way and its satellite galaxies. The APAS is designed to enable follow-up studies of M31 microlensing systems, including searches for gas giant planets in M31. Here we describe the APAS, and we present a few example light curves obtained during its commissioning phase that clearly demonstrate its real-time capability to identify microlensing candidates as well as other transient sources.
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