The influence of pressure on the composition of products from the catalytic conversion of n-hexane by Ashikhmin, Egor A., Naumov, Vladislav S., Romadenkina, Svetlana B., Aniskova, Т. V.

“…This work studies the eff ect of pressure the conversion of n-hexane in a catalytic system in the range of 3 to 7 atm on the yield and composition of products. The process was conducted at a temperature of 450 °C in an inert atmosphere. …”
Get full text

Chemical composition of muscle tissue of fish reared in the aquaculture of South Vietnam by A. A. Payuta, D. A. Guldina, E. A. Flerova, N. V. Lobus, E. G. Evdokimov

“…No significant differences were found between the biochemical parameters in the muscles of fish with an increase in body size, and only in Channa striata did the proportion of minerals increase. …”
Get full text

Algorithm and mathematical model for geometric positioning of segments on aspherical composite mirror by B. Conquet, L. F. Zambrano, N. K. Artyukhina, R. V. Fiodоrtsev, A. R. Silie

“…In recent years, the largest terrestrial and orbital telescopes operating in a wide spectral range of wavelengths use the technology of segmented composite elements to form the main mirror. This approach allows: to expand the spectral operating range from 0.2 to 11.0 μm and to increase the diameter of the entrance pupil of the receiving optical system, while maintaining the optimal value of the exponent mS– mass per unit area.Two variants of adjusting the position of mirror segments are considered when forming an aspherical surface of the second order, with respect to the base surface of the nearest sphere, including geometrical and opto-technical positioning.The purpose of the research was to develop an algorithm for solving the problem of geometric positioning of hexagonal segments of a mirror telescope, constructing an optimal circuit for traversing elements when aligning to the nearest radius to an aspherical surface, and also to program the output calculation parameters to verify the adequacy of the results obtained.Various methods for forming arrays from regular hexagonal segments with equal air gaps between them are considered. …”
Get full text

Influence of tree species on soil physicochemical composition, macrofauna, and forage production by Leandro Valqui, José Américo Saucedo-Uriarte, Miguel A. Altamirano-Tantalean, Leidy G. Bodadilla, Segundo Melecio Portocarrero Villegas, William Bardales, Hugo Frias, Luis Homero Zagaceta Llanca, Lamberto Valqui-Valqui, Lizbeth Juanita Puerta-Chavez, Héctor V. Vásquez

Get full text

Performance Evaluation of Coconut Wood Veneer Composite for Sustainable Construction Material by Shamil Haque Kizhakkethodi Mansoor, Vishnu Raju, Anish Mavila Chathoth, Shibu Comath, Adiyodi Venugopal Santhoshkumar, Sreejith Babu, Pavin Praize Sunny, Arjun Memuttathu Sajeevan

“…The study highlights the potential of pure coconut composites under optimized conditions. However, further improvements are needed for high-density and hybrid composites, focusing on adhesive type, surface modification, veneer alignment, and hot-pressing parameters.…”
Get full text

Development of efficient compositions of hydrophobic materials resistant to chemical and biological environments by Salman Dawood Salman Al-Dulaimi, S. I. Bazhenova, I. V. Stepina, I. V. Erofeeva, Victor Afonin

“…This study uses global optimization to examine optimized parameters' roles. This study analyzed experimental data statistically and analytically. …”
Get full text

Influence of propeller shaft angles on the speed performance of composite fishing boats by Nhut Pham-Thanh, Tien Dinh Duc, Tu Tran Dinh, Do Quang Thang

“…The propeller shaft inclination angle is one of the critical parameters influencing the speed of a fishing boat. …”
Get full text

Polysaccharide Composition of Dietary Fiber During Raspberry and Blackberry Juice Production by Monika Kosmala, Joanna Milala, Elżbieta Karlińska

“…Fiber is one of the most important ingredients of fruit that has an influence on the gastrointestinal tract and biochemical parameters of blood. Fiber has texturizing functions in food processing. …”
Get full text

Investigation of the structure and chemical composition of sediments of irrigators of the tower cooling tower by E. V. Veselovskaya, E. A. Lazareva

Get full text

Adaptive Capabilities and Body Composition of Students with Different Levels of Physical Activity by Svetlana V. Mikhaylova, Tat’yana V. Khrycheva

“…The purpose of this paper was to study the adaptive capabilities and body composition of students with different levels of physical activity. …”
Get full text

Acoustic Properties of Recycled Polyurethane Foam Waste and Polyvinyl Acetate Composites by Tubelis Jonas, Astrauskas Tomas, Dzikēvičs Miķelis

“…Measured parameters: normal incidence sound transmission loss and sound absorption. …”
Get full text

Yield, chemical composition and persistence of alfalfa on moderately acidic mountain soil by Josip Leto, Mladen Knežević, Krešimir Bošnjak, Marina Vranić, Goran Perčulija, Ivana Matić, Hrvoje Kutnjak, Žarko Miljanić

Get full text

Genetic composition of Kazakh horses of Zhabe type evaluated by SNP genotyping by Alexandr Pozharskiy, Indira Beishova, Askar Nametov, Alzhan Shamshidin, Tatyana Ulyanova, Alexandr Kovalchuk, Vadim Ulyanov, Malika Shamekova, Gulmira Bekova, Dilyara Gritsenko

Get full text

Failure Probability Analysis of Composite Pressure Tanks Using Subset Simulation by Youcef Sid Amer, Samir Benammar, Kong Fah Tee, Zouhir Iourzikene

“…To quantify the effect of the randomness of different parameters on the structural reliability of composite tanks, a sensitivity analysis was performed using different values of coefficients of variation (COV). …”
Get full text

Water Microelement Composition Influence on the Efficiency of the Milk Powder Dissolution Process by S. N. Turovskaya, A. N. Petrov, I. A. Radaeva, E. E. Illarionovа, V. K. Semipyatniy, A. E. Ryabova

“…Analysis of scientific and technical material in this area showed, that a number of scientists proposed various descriptions not only of individual stages, but also of the dissolution process as a whole, and its determining factors were identified, mathematical models were built, making it possible to determine critical areas depending on from the properties of the raw materials and the process, data were obtained on the parameters of the system during the dissolution of dry dairy products.In the article presents the sanitary and hygienic, physicochemical and organoleptic require-ments for drinking water by Russian legislation, international organizations and national standards of a number of countries.Presented a review of widely used and promising water treatment methods.Analyzed data, describing the effect of the microelement water composition on the efficiency of milk powder dissolving process. …”
Get full text

Process variables in mixture experimental design applied to wood plastic composites by Javier Cruz-Salgado, Sergio Alonso-Romero, Edgar Augusto Ruelas-Santoyo, José Alfredo Jiménez-García, Israel Miguel-Andrés, Roxana Zaricell Bautista-López

“…Response variable optimization identifies the optimal mixture composition as 90% PET, 10% wood, and no coupling agent. …”
Get full text

Long-term water immersion of dental composites based on bioactive glass by Petra Gajski, Matej Par, Håvard J. Haugen, Torben Hildebrand, Kai Zheng, Aldo R. Boccaccini, Zrinka Tarle, Danijela Marovic

“…Both BG composites showed a higher mass increase during water immersion than inert control (10-Si) at all measured time points (p < 0.001), ranked as 10-BG > 10-CuBG > 10-Si. …”
Get full text

Improving the technology of gluten-free bread from composite flour mixtures by A. I. Soloveva, D. A. Bragina, Yu. V. Ushakova, G. Y. Rysmukhambetova

“…The article presents the research on the development of bread technology from gluten-free composite mixtures: No. 1 from a mixture of rice and flax flour (70: 30), No. 2 from flax and corn flour (50: 50) and No. 3 from pumpkin and corn flour (50: 50). …”
Get full text

Virtual Analysis on Proximate Body Composition of Labeo rohita and Cirrhinus mrigala by Muhammad Atif Sikandar, Zaigham Hassan, Abdul Basit, Raees Khan, Fethi Ahmet Ozdemir

“…Further research is recommended on the other parameters and miss rays of this work.…”
Get full text

Fabrication and Use of a Customized Provisional Composite Abutment in Dental Practice by Roman Studenikin, Sabukhi Niftaliev

“…The materials used to perform the procedure for placement of a customized provisional composite abutment were a provisional prefabricated abutment with a retention grip for the composite; aluminum oxide powder with a particle size of 27 μm for better adhesion of the composite, with which the retention grip of the provisional abutment is coated; 3M Single Bond Universal light-curing adhesive applied to the provisional abutment; and Filtek Bulk Fill 3M composite including a low-viscosity radiopaque nanocomponent and ytterbium trifluoride filler with a particle size of 0.01–3.5 nm. …”
Get full text