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1821
INCREASING CENTRIFUGAL PUMP PERFORMANCE
Published 2019-08-01“…The dependence of the maximum efficiency on the applied steps of the above installations has been determined. …”
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1822
Determination of Tungsten, Molybdenum and 5 Associated Elements in Tungsten-Molybdenum Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with Direct Sintering
Published 2023-10-01“…It is insoluble in hydrochloric acid, nitric acid and aqua regia, and the alkali melting and mixed acid dissolution method was often selected for sample digestion. However, the matrix effect cause by the alkali melting method seriously affects the accuracy and detection limit of instrument testing; the acid dissolution method has low dissolution efficiency for tungsten, molybdenum and other insoluble elements, and requires a long time and a complex pretreatment process by using a variety of inorganic strong acids such as hydrofluoric acid and aqua regia, which can also cause damage to the analytical and testing instruments.OBJECTIVESTo develop a simple and efficient method for quantitative analysis of tungsten and molybdenum and its associated elements in tungsten-molybdenum ore.METHODSBased on alkaline melting and acid dissolution, a method was established by inductively coupled plasma-optical emission spectrometry (ICP-OES) with direct sintering and complex extraction of hydrochloric acid-phosphoric acid-citric acid. …”
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1823
Construction of nitrogen critical dilution curve and differences in nitrogen nutrition characteristics in different organs of maize varieties with contrasting nitrogen efficiencies
Published 2025-06-01“…IntroductionThis study aimed to establish and verify a critical nitrogen dilution model for different organs of maize varieties with different nitrogen efficiencies and clarify differences in nitrogen nutritional characteristics.MethodsTwo maize varieties (nitrogen-efficient variety ZH 311 and nitrogen-inefficient variety XY 508) were grown under four nitrogen levels to evaluate N dynamics and dry matter accumulation.ResultsThe results showed that the critical nitrogen concentration dilution curves based on root dry matter, stem-sheath dry matter, leaf dry matter, and plant dry matter, with coefficient of determination (R²>0.90), all reached significant levels and could be used for nitrogen nutrition diagnosis of maize. …”
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1824
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1825
Development and validation of an open-source virtual reality environment for alcohol use disorder and determinants of cue-induced craving among Indian participants
Published 2025-07-01“…Methods: A cross-sectional study was conducted among 44 detoxified male inpatients with AUD. …”
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1826
Analyzing Morphometrics of Sella Turcica, Foramen Magnum and Mastoid Processes Using Head and Neck Computed Tomography for Sex Determination in Egyptian Adults
Published 2025-01-01“…This study aims to analyze the morphometrics of the sella turcica, foramen magnum (FM), and mastoid process in adult sex determination. In addition, to identify from the previously mentioned parts which is the most efficient single parameter in adult sex determination. …”
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1827
A robust and efficient approach to estimating the age of secondary mangrove forests employing time-series Landsat images and the CCDC model
Published 2025-09-01“…We implemented this method in the Dongzhaigang National Nature Reserve (DNNR), which is the first mangrove nature reserve established in China, achieving a coefficient of determination (R2) of 0.723. …”
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1828
Classification of Autism Disorder Severity Using Fuzzy Methods Based on Soft Computing
Published 2023-03-01“…One of the challenges in diagnosing autism is the uncertainty in determining the severity of the disease. To this end, fuzzy systems based methods have been adopted in this study. …”
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1829
Prediction of molecular targets of cancer preventing flavonoid compounds using computational methods.
Published 2012-01-01“…Computational methods involving virtual screening, shape and pharmacophore analysis and molecular docking have been used to select chemicals that target a particular protein or enzyme and to determine potential protein targets for well-characterized as well as for novel phytochemicals.…”
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1830
Nitrogen-rich covalent organic polymers for efficient solid phase extraction of nonsteroidal anti-inflammatory drugs from water samples
Published 2025-02-01“…The practical application of the method was confirmed through the successful determination of NSAIDs in tap water, surface water, and sewage. …”
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1831
A Comparative Study of Loan Approval Prediction Using Machine Learning Methods
Published 2024-06-01“…In addition, determining the effect of K-Best and Recursive Feature Elimination feature selection methods on model performances is another important objective of the research. …”
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1832
Optimization of Village Grouping Using Comparison of K-Means and K-Medoids Methods
Published 2025-07-01“…Cluster optimization was performed using the Sum of Squared Errors (SSE) method. The results show that K-Medoids offers more stable clustering, especially in the presence of outliers, while K-Means is more efficient in computation. …”
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1833
Enhancing Mirror and Glass Detection in Multimodal Images Based on Mathematical and Physical Methods
Published 2025-02-01“…To address this issue, we applied mathematical and physical methods, such as three-point plane determination and steady-state heat conduction in two-dimensional planes, along with an RGB enhancement module, to reconstruct RGB, depth, and thermal data for mirrors and glass in two publicly available datasets: an RGB-D mirror detection dataset and an RGB-T glass detection dataset. …”
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1834
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The problem of creating and developing an integrated approach to standardization process of automated testing of turboexpanders
Published 2024-07-01“…In accordance with the general classification of product testing, 9 types of research have been identified that are of scientific and practical interest in the experimental determination of the most relevant parameters of turboexpanders: isentropic efficiency, stability of the rotor and impellers, strength of impellers, vibration and noise characteristics.Conclusion. …”
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1836
Limit analysis of microstructures based on homogenization theory and the element-free Galerkin method
Published 2020-12-01“…Several benchmark examples will be investigated to demonstrate the computational efficiency of proposed method. …”
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1837
Equivalent Inertial Force Method of Seismic Calculation for Subway Station in Soft Site
Published 2016-01-01“…The result shows that the calculation results of equivalent inertial force method are accurate and reliable. It can meet the design requirements and improve computational efficiency.…”
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1838
The Development of a High-Throughput Homonuclear Decoupling HSQC NMR Platform for the Determination of 10 Sex Hormones in Animal-Source Food and Medicines
Published 2024-11-01“…Owing to their endocrine disruption effect, the hormone levels in animal-source food and medicines need to be efficiently and accurately quantified by a reliable analytical method. …”
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1839
Simultaneous determination of 9 succinate dehydrogenase inhibitor compounds in vegetables by QuEChERS combined with gas chromatography-tandem mass spectrometry
Published 2025-04-01“…The results of different levels of spiked experiments for 9 SDHIs showed a good recovery rate of 80.4%-98.2% and the relative standard deviations (RSDs) were 3.0%-7.9%. The method was efficient, fast, easy to operate, with low detection cost, high recovery rate, high sensitivity, and good reproducibility, which was suitable for batch determination of 9 SDHIs in daily vegetables.…”
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1840