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401
Experimental and numerical investigation of suddenly expanded flow at sonic mach number
Published 2025-08-01“…Abstract The sudden expansion at the blunt base is a widespread phenomenon in the case of shells, rockets, and missiles. This study uses passive control in the form of ribs of various shapes and sizes in an abruptly expanded square cross-section duct at sonic Mach number. …”
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402
Development Resources of the Border Regions of the Russian Federation
Published 2024-08-01“…The economic and statistical research was carried out on the basis of data from the Federal State Statistics Service of the Russian Federation, most of which are published in statistical collections “Regions of Russia. …”
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403
Optimization of used cottonseed oil methyl ester production using response surface methodology
Published 2023-01-01“…It includes mixing methanol with raw UCSO in the presence of heterogeneous catalysts such as a blend of calcined, hydrated, and dehydrated eggshells and coconut shells that makes up the CaO. Alkali-based transesterification was discovered to be the most appropriate technology to extract the biodiesel, hence the UCSO has been chosen for the current investigation. …”
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404
Populations of Exotic × Locally Adapted Germplasm - A Potent
Published 2018-09-01“…Three most superior hybrid combinations developed through exotic × locally adapted germplasm were found too much responsive and suggested their further testing through on-farm trials before releasing as commercial hybrids.…”
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405
Bioinspired Strong and Tough Layered Bulk Composites via Mycelial Interface Anchoring Strategy
Published 2025-05-01“…However, achieving the integration of structural and functional properties, such as the ability to monitor external forces, remains a significant challenge. Nacre and turtle shells in nature are strong and tough due to their unique ordered structure of alternating soft and hard phases. …”
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406
Public opinion of internally displaced persons of the Zaporizhzhia region regarding the situation in the temporarily occupied territories (according to a sociological survey)
Published 2024-12-01“…Respondents mostly disagree that the Ukrainian media provide distorted information. …”
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407
Reassessing the HMS Challenger collection as a late 19th century surface ocean indicator using X-ray micro-computed tomography
Published 2025-03-01“…Our analysis reveals that most samples contain benthic foraminifera shells, along with high concentrations of foraminiferal fragments and detrital quartz grains, while the remaining samples consist of sedimentary material devoid of calcareous microfossils. …”
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408
The Composition of Essential Oils and the Content of Saponins in Different Parts of <i>Gilia capitata</i> Sims
Published 2025-06-01“…The yield of EOs ranged from 0.42 to 1.97 mL/kg, with the largest yields being obtained from the seeds; smaller yields obtained from the flowers, fruits, and leaves; and the lowest quantity obtained from the stems, roots, and shells. Using the GC-MS method, we identified 116 compounds. …”
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409
War’s youngest victims: a descriptive cross-sectional study on injury distributions, severity patterns, and outcomes among paediatric trauma patients in Kharkiv, Ukraine
Published 2025-07-01“…Analysis of the war-related injuries indicated that the most affected body regions included the upper extremities (31%), lower extremities (28%), and thorax (28%). …”
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410
Elementary characterization of samples of Portland cement, natural gypsum and phosphogypsum mortars from Brazil
Published 2019-02-01“…Portland cement, the basic ingredient of concrete and is manufactured by crushing, milling and proportioning limestone, sand, clay, iron ore and secondary materials such as shells, chalk or marl combined with shale slate or blast furnace slag, fly ash, gypsum, phosphogypsum, and some others. …”
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411
Social and pedagogical work with children and youth in education institutions of territorial communities during marital state
Published 2024-09-01“…The social support system in Ukraine is highlighted, the importance of socio-pedagogical work with children and youth at the territorial community level in the context of war is analyzed, because children and youth are one of the most vulnerable social groups that need help and support in various aspects of their lives. …”
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412
Clinical Analyses of Efficiency of Multicomponental, Vitreoretinal Surgery of Eye Trauma
Published 2019-06-01“…In the case of a foreign body impacted into the shells with dimensions greater than 4 mm, the real cavity was tamped with PFOS.Results. …”
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413
Frying practices, oils quality and development of natural adsorbents to regenerate frying oils used by unlicensed street vendors of fried meat in Bamenda, North-West Cameron
Published 2025-06-01“…Sample oils collected were analyzed measuring oxidation parameters. 10 % of each activated adsorbent prepared from groundnut shells and rice husks was mixed with degraded oils and the oxidation parameters before and after adsorption were evaluated. …”
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414
EPR study of interlayer interaction in Gd<sub>2</sub>O<sub>3</sub>/Fe nanostructure
Published 2021-06-01“…The exchange interaction parameter increases from 985 to 4685 (rel. units), the g-factor decreases from 3.5 to 2.4. The most probable reason for the change in the spectrum is the exchange f - d interaction between atoms with unfilled f- and d-electron shells that are parts of the contacting layers. …”
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415
Promising pea varieties for use in the cereal industry in the south of Western Siberia
Published 2023-09-01“…Weather conditions were contrasting with periods of severe drought. The most favorable years for the formation of a large productivity of pea seeds (5.11 and 5.01 t/ha, respectively) were 2019 (HTC = 0.99) and 2020 (HTC = 0.60). …”
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416
Comprehensive method for evaluating results of ultrasonic testing of parts and components of rolling stock when adjusting the sensitivity for different reflectors
Published 2019-06-01“…The article proposes a new integrated method for estimating discontinuities in parts and units of railway rolling stock according to the amplitude — distance — diameter diagrams by the standardless method with the possibility of determining the type of discontinuity by the dual-frequency method of flaw-detection with a manual ultrasonic testing with a single-channel ultrasonic flaw detector. Developed method is most relevant in the control of cast parts of railway rolling stock, since castings can be equally likely to contain bulk (pores, shells, nonmetallic inclusions, etc.) and planar discontinuities (cracks of different origin; flocks; segregations that lead to violation continuity, etc.). …”
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417
Investigation of buckling modes of sandwich specimens with facing layers from [0°]s fiber-reinforced plastic under axial compression
Published 2019-12-01“…Linearized equations of equilibrium in a perturbed state obtained on the basis of the previously constructed geometrically nonlinear equations of the theory of sandwich shells with a transversely flexible core were used. …”
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418
Application of the Double Approximation Method for Constructing Stiffness Matrices of Volumetric Finite Elements
Published 2023-12-01“…In computational practice, the most widespread FE are the so-called multilinear isoparametric FE with a linear law of approximation of displacements. …”
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419
ECONOMIC-INSTITUTIONAL PROBLEMS OF EUROPEAN REMILITARIZATION
Published 2024-06-01“…Therefore, we can argue that the million shells for Ukraine cost Europeans significantly more than a few pitiful billion euros. …”
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420
Global Research Trends in Biomimetic Lattice Structures for Energy Absorption and Deformation: A Bibliometric Analysis (2020–2025)
Published 2025-07-01“…Biomimetic lattice structures, inspired by natural architectures such as bone, coral, mollusk shells, and Euplectella aspergillum, have gained increasing attention for their exceptional strength-to-weight ratios, energy absorption, and deformation control. …”
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