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Investigation of Inlet Guide Vane Efficiency in Centrifugal Compressors for the Turbo Refrigeration Machines
Published 2025-08-01“…The article investigates the influence of geometric parameters of inlet guide vanes (IGVs), including blade profiling and design features, on their operational efficiency. IGVs are widely used in centrifu-gal compressors of turbo-refrigeration machines with various refrigerants to control compressor per-formance by adjusting flow swirl at the impeller inlet. …”
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563
Optimizing Solar Panel Efficiency: Integration of Dual Axis Solar Tracking and Reflectors
Published 2024-11-01“…Specifically, this research tested various reflectors to determine the most significant efficiency improvement. …”
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564
PROSPECTS FOR THE DEVELOPMENT OF SEED PRODUCTION IN UKRAINE TAKING INTO ACCOUNT ECONOMIC AND ENVIRONMENTAL EFFICIENCY
Published 2025-05-01“… The scientific study examines the prospects for the development of seed products of the agro-industrial complex of Ukraine to study economic and environmental efficiency under martial law. Research has shown that technological advancements in the agricultural sector are key to economic development and enhancing the quality of seed products, ensuring the state's food security. …”
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565
Geotechnical mapping of lateritic gravels for efficient road construction in Cameroon’s intertropical zone
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566
Estimation of fertilizer use efficiency in vegetable systems using 15N: an overview
Published 2024-12-01“…Recent interest in determining fertilizer N use efficiency (FNUE) for vegetables may be due to the increase of global vegetable production, rise in N fertilizer costs, consumer preference for diversified plant-based diets, and interest in purchasing sustainably produced fresh foods. …”
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The problem of determining the antioxidant additive in transformer oil by chromatographic methods
Published 2020-12-01“…At the same time, the separation efficiency increases as the number of theoretical plates per meter of chromatographic column increases. …”
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569
Pretreatment method of forchlorfenuron residues in loquat by HPLC analysis
Published 2016-05-01“…Therefore, residue detection of forchlorfenuron in fruits and vegetables is imperative.High-performance liquid chromatography (HPLC) analysis is a common detection method. The suitable conditions for the extraction and purification of sample play an important role prior to HPLC analysis.In this study, the extraction efficiency of forchlorfenuron residues in loquat was compared using matrix dispersive solid phase extraction and QuEChERS (quick, easy, cheap, effective, rugged, safe).The results showed that QuEChERS was a more suitable pretreatment method for the determination of forchlorfenuron residues in loquat, because it had obviously higher average recoveries than the matrix dispersive solid phase extraction. …”
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570
ANALYSIS OF THERMAL PROPERTIES OF THE LED-LINES BY METHOD OF ELECTRICАL TRANSIENT PROCESSES
Published 2015-12-01“…Increasing the solid lighting facilities operational energy-efficiency in the national economy of the Republic of Belarus is of current concern. …”
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571
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572
Эффективность и безопасность интрасептальной анестезии при лечении зубов
Published 2020-04-01“…Developed VAS scale and pulpotestometria were used to evaluate the efficiency of this method, length of time needed to produce an anesthetic effect and duration of anaesthesia accomplished with traditional syringe and computerized delivery system STA . …”
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573
APPLIED MODIFIED EXPONENTIAL APPROACH METHOD TO DETERMINE THE OPTIMAL SOLUTION
Published 2025-01-01“…Distribution routes are chosen to be as efficient as possible. Therefore, this article discusses the application of the transportation method to manage vaccine distribution and minimize distribution costs. …”
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574
A New Guess-and-Determine Method for Cryptanalysis of the GSM Encryption
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575
Determination method for trace polycyclic aromatic hydrocarbons in paddy soils
Published 2017-11-01“…The PAHs are usually extracted and purified by organic solvent prior to determination. In order to improve determination accuracy and recovery rate, the pretreatment conditions for the determination of 16 PAHs in paddy soils are of great significance.On the basis of former work, in order to get the highest extraction efficiency and recovery rate, we compared two different extract solvent mixtures, four different clean-up columns and three different elution solutions, and also compared the elution volume and temperature of nitrogen blowing to optimize the determination method for trace PAHs in paddy soils under the laboratory condition. …”
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576
Methodological tools of consulting companies for evaluating the effectiveness of organizations.
Published 2024-12-01“…The results obtained include the definition of a set of methodological tools within the framework of the resource-cost method, the Paretian optimum and the dynamic standard method; substantiation of the equivalence and mutual complementarity of scientific model alternatives to efficiency, the interaction of the process and the result of efficiency assessment based on the principle of complementarity; evaluation of the organization’s activities in a static efficiency model as an example of the implementation of the principle of complementarity. …”
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577
Methodology for assessing the spherical plain bearings durability
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578
Structural Optimization of Tri-Cone Cyclone Based on the Response Surface Method
Published 2025-06-01Get full text
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579
Efficient induction of tetraploids via adventitious bud regeneration and subsequent phenotypic variation in Acacia melanoxylon
Published 2025-08-01“…After colchicine treatment, the tetraploid induction efficiency on the 5th day of preculture was significantly higher compared to the 4th or 6th day. …”
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580