additional amount
Recently Published Documents


TOTAL DOCUMENTS

69
(FIVE YEARS 25)

H-INDEX

10
(FIVE YEARS 2)

2021 ◽  
Vol 937 (3) ◽  
pp. 032091
Author(s):  
N N Pashkang ◽  
A B Martynushkin ◽  
A G Krasnikov ◽  
I V Fedoskina ◽  
E A Strokova

Abstract Based on the identified trends, patterns and features of the development of the grain production industry in Ryazan region, a conclusion was made about the existing potential and the prospect of support for agricultural organizations specializing in the production of grain, the development of seed production of winter wheat and spring barley, the use of innovative technologies for their cultivation and harvesting. The team of authors revealed that one of the main problems in the development of the grain production industry both in Ryazan region and in Russia was a decrease in the level of technical equipment of agricultural enterprises with modern grain harvesters. To solve this problem, it is proposed at the level of the regional government to purchase a license from developers for the production of devices that reduce grain losses during threshing and cleaning, create jobs for the production of these devices and modernize grain harvesters in the region, that will allow getting a larger percentage of high-quality food and seed grain, to replenish the regional budget with an additional amount of taxes, the receipt of which will exceed the costs of purchasing a license and organizing additional jobs.


2021 ◽  
Vol 28 (3) ◽  
pp. 101-110
Author(s):  
Corina Chelmenciuc ◽  
◽  
Constantin Borosan ◽  

Currently, the district heating systems (DHSs) are intensively promoted both nationally and globally. The advantages of using these systems in urban areas compared to individual heating systems are practically indisputable. Still, it is essential that the calculation underlying the assessment of the economic profitability of the projects to connect the new heat consumers to DHS be made correctly by taking into account all the necessary investments and the benefits obtained from the additional amount of energy sale. The article presents the methodology for the optimal regression model selection that can be applied to predict the additional electricity produced in cogeneration mode in case of the new heat consumer connection to the DHS, based on the actual data of the thermal and electrical energy supplied to network from a CHP in the Republic of Moldova. At the same time, it is demonstrated that between the thermal energy supplied to a new consumer connected to DHS and the additional electricity produced in the cogeneration mode, there is a direct and linear correlation.


2021 ◽  
Vol 84 ◽  
pp. 75-86
Author(s):  
Alexander V. Fateryga ◽  
Valentina V. Fateryga

Two females of Leptochilus regulus (de Saussure, 1855) were observed nesting in reed stalks of a Fabre’s hive serving as a block of trap nests in Crimea, with the timekeeping of all their nesting behaviours. The building material used by the females to separate the nesting cavity into the cells consisted of pellets of dry soil, gravel particles, and small fragments of tree bark, leaves, and thin stems. Females rapidly carried these items collected in 1.0–1.5 m from the nests. They bonded only the last portions of the building material in each “partition” with a very small amount of mud. An additional amount of unbonded building material items was deposited into the nest after sealing the last nest cell. Females hunted exclusively for small larvae of an anobiid beetle (Coleoptera, Anobiidae); they stored 19–37 prey items per cell. Hunting and provisioning occupied the largest portion of the females’ time budget. Duration of hunting flights was different between the females. The nests of both females contained three brood cells. Cocoons of Chrysis ragusae De Stefani, 1888 (Hymenoptera, Chrysididae) were found in the nests; females of this cuckoo wasp species were also recorded entering the host nests at the stage of provisioning, acting apparently as inquilines. The cocoon ultrastructure of L. regulus is illustrated and discussed.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1250
Author(s):  
José Antonio Lebrón ◽  
Manuel López-López ◽  
Clara B. García-Calderón ◽  
Ivan V. Rosado ◽  
Fernando R. Balestra ◽  
...  

The formation of calixarene-based liposomes was investigated, and the characterization of these nanostructures was carried out using several techniques. Four amphiphilic calixarenes were used. The length of the hydrophobic chains attached to the lower rim as well as the nature of the polar group present in the upper rim of the calixarenes were varied. The lipid bilayer was formed with one calixarene and with the phospholipid 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine, DOPE. The cytotoxicity of the liposomes for various cell lines was also studied. From the results obtained, the liposomes formed with the least cytotoxic calixarene, (TEAC12)4, were used as nanocarriers of both nucleic acids and the antineoplastic drug doxorubicin, DOX. Results showed that (TEAC12)4/DOPE/p-EGFP-C1 lipoplexes, of a given composition, can transfect the genetic material, although the transfection efficiency substantially increases in the presence of an additional amount of DOPE as coadjuvant. On the other hand, the (TEAC12)4/DOPE liposomes present a high doxorubicin encapsulation efficiency, and a slow controlled release, which could diminish the side effects of the drug.


2021 ◽  
Vol 19 (2) ◽  
pp. 210
Author(s):  
Husnurrizal Husnurrizal ◽  
Ade Syahriani Aritonang ◽  
Tongku Nizwan Siregar ◽  
Teuku Armansyah ◽  
Hafizuddin Hafizuddin

<p class="MDPI17abstract"><strong>Objective: </strong>The purpose of this research was to find out the rise of spermatozoa motility of Waringin sheep which was given additional amount of PGF2α in commercial semen diluents (Andromed).</p><p class="MDPI17abstract"><strong>Methods: </strong>A total of 3 Waringin sheep aged 2-3 years were used in this study. Semen samples were collected using an artificial vagina and evaluation of the quality of the spermatozoa was carried out macroscopically and microscopically. This study used a unidirectional completely randomized design. After evaluated, semen samples were added with Andromed diluents afterwards divided into three groups treatment, K1; K2; and K3 where each group was then added with physiologic NaCl, 37,5 µg PGF2α, and 75 µg PGF2α. All of the samples were equilibrated in refrigerator for 4 hours and spermatozoa motility was examined, then after the freezing process was carried out and stored for 24 hours, the post thawing spermatozoa motility was examined. The data obtained was analyzed using one-way analysis of variance (ANOVA) and followed by Duncan test.<strong></strong></p><p class="MDPI17abstract"><strong>Results: </strong>The result of the research showed that motility of post equilibration spermatozoa (%) of Waringin sheeps at K1; K2; and K3 were 43,67±1,20; 75,00±4,00; and 82,33 ±3,18 (P&lt;0,05); and motility of post thawing spermatozoa (%) of Waringin sheeps at K1; K2; and K3 were 25,33±1,85; 49,33±3,17; dan 54,00 ±5,50 (P&lt;0,05).<strong></strong></p><strong>Conclusions: </strong>In conclusion that was the rise in motility of prefreezing spermatozoa and motility of post thawing spermatozoa of Waringin sheep which given additional amount of PGF2α on Andromed diluents.


2021 ◽  
Vol 62 (3b) ◽  
pp. 51-57
Author(s):  
Minh Van Nguyen ◽  
Hau Van Nguyen ◽  

Tailings of the Tan Rai bauxite mineral processing plant contain a relatively high proportion of fine bauxite ore particles of less than 1mm. This amount of discarded fine bauxite particles necessarily leads to a high loss of valuable bauxite mineral and also require more tailings dam space. Recovery of such fine bauxite ore particles may produce certain economic and environmental effects to the current processing plant. The paper presents results of the study on recovery of fine bauxite ore particles -1 mm from tailings of the Tan Rai - Lam Dong bauxite mineral processing plant by the use of mechanical classifiers. The obtained +0.5 mm bauxite concentrate are suitable for blending with the +1 mm concentrate of the current plant. The study results showed that recovery of fine bauxite ore particles -1mm from the plant tailings may produce additional amount of valuable concentrate to ensure the supply requirements to the alumina plant and also add some values to the effective mineral resource utilization and bring some economic efficiency.


Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 854
Author(s):  
Wei-Yu Chen ◽  
Ching-Ping Wang ◽  
Po-Chou Chen ◽  
Kun-Yi Andrew Lin ◽  
Surajit Ghosh ◽  
...  

In this study, perovskite ZnTiO3 photocatalysts were fabricated by the sol–gel method. The photocatalytic capability was verified by the degradation of the emerging contaminant, the antibiotic amoxicillin (AMX). For the preparation, the parameters of the calcination temperature and the additional amount of polyvinylpyrrolidone (PVP) and ammonia are discussed, including the calcining temperature (500, 600, 700, 800 °C), the volume of ammonia (750, 1500, 3000 μL), and the weight of PVP (3 g and 5 g). The prepared perovskite ZnTiO3 was characterized by XRD, FESEM, BET, and UV-Vis. It is shown that the perovskite ZnTiO3 photocatalysts are structurally rod-like and ultraviolet light-responsive. Consequently, the synthesis conditions for fabricating the perovskite ZnTiO3 photocatalysts with the highest photocatalytic performance were a calcining temperature of 700 °C, an additional ammonia amount of 1500 μL, and added PVP of 5 g. Moreover, the photocatalytic degradation of perovskite ZnTiO3 photocatalysts on other pollutants, including the antibiotic tetracycline (TC), methyl orange (MO), and methylene blue (MB) dyes, was also examined. This provides the basis for the application of perovskite ZnTiO3 as a photocatalyst to decompose emerging contaminants and organic pollutants in wastewater treatment.


Author(s):  
Y. B. Kostrova ◽  
Y. O. Lyashchuk ◽  
L. V. Cherkashina ◽  
O. Y. Shibarshina

The article considers the process of branding as a means of self-promotion and personal expression. When conducting the study, the authors used the theory of consumer behavior of A. Maslow as a methodological basis, as well as the visual structures of the personality of Z. Freud, K. Jung. The aim of the study is to analyze the process of branding as a psycho-logical means of self-promotion and personality expression. During the study, general scientific methods of cognition were used within the framework of dialectical and systemic approaches, methods of logical and situational analysis. The main tasks of personal expression, solved with the help of brand products, have been identified. At the same time, the authors argue that the choice of brand products for self-promotion in all three cases is based on one psychological motive - self-realization and self-expression. It is shown that the brand brings additional income, since many consumers are ready to overpay, giving an additional amount of money for the opportunity to have a prestigious product even for a premium price. Brands have an emotional connection with consumers. Leading companies with famous brands have long noted for themselves that the connection of their goods with consumers lies through emotions. Brands help people fulfill their dreams, desires, open up more opportunities in life. The stronger and more significant the unique, rational and emotional characteristics of the brand for the consumer, the higher the price he is willing to pay for the product, the greater the opportunity for the company to profit. The increase in profits in turn leads to an increase in the value of shares and to an increase in the value of the company itself, since the brand is a kind of intangible asset. Brand ownership is a winning result of the history of the company, the fate of its founders and executives, skillful talented brand makers. Not every name of the company can be called a brand, not everyone is destined to become one, not everyone is given to maintain the level of the brand. Having a brand means that even with approximately equal consumer and other properties, the product will buy more, the idea will have more adherents.


2021 ◽  
Vol 17 (1) ◽  
pp. 1-12
Author(s):  
Ardian Alfianto ◽  
Shandy Cecilia ◽  
Alidina Nurul Hidayah ◽  
Anjelita . ◽  
Cosmas Bambang Sukatja

Rawapening has an area of 2,667 acres, which now ceases to exist. This natural reservoir serves to preserve water, control flood, generate electric turbine, and raw water resource. The depth of this lake decreases 42 cm annually, with the shallowing could cause flooding of the lakeside and and reducing the water supply. This study finds the additional amount of structure and dimension of sabo dam to prevent hazards at each river: at Panjang 2 (B=20m H=2m, and B=25m H=2,5 m), at Galeh 2 (each of B=8m H=2,4m), at Legi 2 (B=10m H=2m, and B=25m and H=2,5m), at Parat 1 (B=13m H=2,7m), at upstream Sraten 1 (B=15m H=2,7m), at downstream Sraten 1 (B=15m H=2,7m), and at Kedungringgis 1 (B=12m H=1,8m). Existing materials are fine and rough sand. Using WaTEM/SEDEM, saboplan guideline by processing the designed capacity, it is estimated that each river’s potential annual yield (in tonnes): Panjang 86.221,8, Galeh/Torong 45.138,24, Legi 42.404,04, Parat 28.579,32, Sraten 25.988,76, and Kedung Ringis 6.955,2. Overall, sabo dam is designed to be a closed type dam located in inlet rivers of Rawapening. Sabo dam construction holds 25% of potential sediment. Collectively, it adds a control volume of 2.885 m3, from 11.539 m3 to become approximately to become 14.424 m3. To cope with sedimentation in Rawapening, the structural approachment (sabodam) should be combined with non structural approachment such as restoring land use in the upstream area for more optimal sedimentation control.Keywords: Sedimentation, rawapening, erosion, WaTEM/SEDEM


2021 ◽  
Vol 1 (42) ◽  
pp. 86-92
Author(s):  
Alexey Dorokhov ◽  
◽  
Dmitriy Kovalev ◽  
Anatoliy Fedotov

Additional anaerobic treatment of the liquid fraction of the methantenk’s effluent to the content of organic substances that ensure subsequent effective processing under aerobic conditions can be carried out in a biofilter. Processing makes it possible to obtain an additional amount of biogas, reduce the volume of sludge residues. To accelerate the processes of wastewater treatment and optimize the processes of anaerobic processing of wastewater, the use of conductive carriers of inorganic biomass is promising. (Research purpose) The research purpose is in studying the effect of conductive biomass carriers on the efficiency of anaerobic processing of organic waste in biofilters. (Materials and methods) The liquid fraction of the effluent obtained as a result of the gravitational separation of the effluent of the methantenk was used as a substrate for the biofilter. The article describes experimental studies on a test bench that includes two identical bioreactors, in one of which there was placed a biomaterial carrier made of carbon tissue. The article presents a technological scheme and an experimental installation for anaerobic post-treatment of the liquid effluent fraction. (Results and discussion) In the course of experimental studies for 25 days, they showed high stability of the operation of the developed and manufactured experimental installation. In the recycled effluent of a bioreactor with a conductive carrier, the organic substances of the effluent are more fully processed into biogas. The specific (in terms of unit volume of the bioreactor) yields of biogas and methane increased by 14.0 and 22.5 percent; the specific methane yield per gram of raw and decomposed organic matter increased by 22.2 and 7.3 percent. (Conclusions) The use of a biofilter in combination with the immobilization of microorganisms on a conductive carrier allowed to increase the efficiency of fermentation of organic waste by 6 percent, increase the specific yields of biogas and methane, and reduce the volume of sludge residues.


Sign in / Sign up

Export Citation Format

Share Document