Research on the Mechanical Properties and NMR Characteristics of Cement Mortar during Freeze-Thaw Cycles by Taoying Liu, Yunmin Wang, Keping Zhou, Feng Gao, Shenghua Xie

“…Moreover, the relationship between the mechanical properties and the pore structure of cement mortar was studied.…”
Get full text

FALL OF RELATIVE SEA LEVELS DURING THE LGM AND THE ROLE OF THE LOWER MANTLE LAYERS IN MANIFESTATION OF THE EFFECT OF HYDROISOSTASY by R. F. Bulgakov

“…The structure and functioning of coastal geosystems depend on the interaction of exogenous and endogenous factors. …”
Get full text

Carbon dioxide as a substrate in the Staudinger-aza-Wittig reaction leading to new sugar surfactants with potential use in cosmetics industry by Karolina Koselak, Marcin Kozanecki, Sławomir Kadłubowski, Stanisław Porwański

“…In this study we presented the preparation of eleven unknow in the literature surfactants based on mono- and disaccharides which contained urea bridge and 10, 12 or 14 carbon atoms in the hydrophobic chain in their structure. The surfactants were obtained in the SAW reaction in which CO2 is used as one of the substrates with yields ranging from 16 % to 99 %. …”
Get full text

Design and Manufacturing of Harmonic Drive Flexible Gear on the Principle or Converted Engagement Reappearance by Tong Shimao.

“…In this paper the ″Principle of Converted Engagement Reappearance″ is discussed.（1） The realization of generating manufacturing flexible gear under the deformation condition which is equal to that of flexible gear engaged with rigid gear without load;（2） When the wave generator is fixed in the manufacturing system, there is a corresponding relationship between the gear-cuttur and rigid gear; （3） The parameters of harmonic drive gear pair are designed and calculated under the condition of virtual flexible gear: The reference circle of virtual flexible gear is defined as the middle circle of flexible gear,and the pitch circles of harmonic drive gear pair is considered to be equal to this reference circle.The harmonic drive gear pair which are manufactured on the principle of ″Converted Engagement Reappearance″ can conform to the Willis theorem.The manufacturing system based on this principle is efficient and of simple structure.…”
Get full text

Atos normativos do conselho federal de educação e do conselho nacional de educação: o desvelar da trajetória da educação superior a distância no Brasil by Lívia Soares de Lima Sousa, Daniela da Costa Britto Perreira Lima

“…It is concluded that the FCE contributed to studies on the use of ED in higher education, barring its growth without appropriate structure and specific regulation. However, at the end of its term, the entity began authorizing distance courses in the private sphere. …”
Get full text

Dehydrogenation of ethanol to acetaldehyde upon copper supported on carbon catalysts by Е. А. Ponomareva, Е. V. Egorova, D. А. Bokarev, A. S. Parastaev

“…The BET surface area as well as the porous structure of the materials were determined with the use of N2 adsorption-desorption technique. …”
Get full text

Research on Wireless Power Transfer Efficiency in Rail Transit by LE Wentao, LYU Zhuo, LIU Huadong

“…At the same time, in order to reduce the flux leakage of the coupling mechanism, an optimized coil structure as figure-8 was proposed. Experimental results of a 150 kW dual-coil coupling principle prototype show that the proposed circuit topology has good constant voltage characteristics: the average efficiency of the high-frequency inverter is 98.9% as in the soft switching state, flux leakage of the figure-8 coil is about 42% less than that of the conventional one, and the average transmission efficiency of the system is greater than 90.2%.…”
Get full text

Perturbative solutions for compact objects in (2+1)-dimensional Bopp–Podolsky electrodynamics by R. V. Maluf, J. E. G. Silva, C. A. S. Almeida, Gonzalo J. Olmo

“…Our analysis suggests that the near-horizon and inner structure of the solution remain unaltered, indicating that no new non-black hole objects emerge in this regime. …”
Get full text

A COATING BASED ON CROSS-LINkED POLyDIMETHyLSILOXANE AND NANOPARTICLES WITH DIFFERENT MORFOLOGIES FOR SUPERHyDROPHBIC TEXTILE FABRICATION by V. V. Terekhin

“…A composition and method for applying a superhydrophobic composite coating for fabrics based on chemically crosslinked polydimethylsiloxane (PDMS), silica nanoparticles (SiO2 NP), composite nanoparticles with “polystyrene core/silica shell structure” and a fluoroalkylsilane (FAS) were proposed. …”
Get full text

Stochastic allocation strategy for irregular arrays based on geometric feature control by Jingjing Yu, Qi Xi, Runlei Li, Hui Tian, Yaxi Xie

“…Important geometric features are extracted to be used as the input vector of the neural network structure to determine the optimal irregular arrangements of sensors. …”
Get full text

ON THE ISSUE OF THE LEGAL NATURE OF THE INVESTMENT CONTRACT VIA THE INVESTMENT PLATFORMS by PEREPELKINA YA.A.

“…As the result of the study, it is proposed to consider the investment contract via the investment platform as an auxiliary contractual structure, the features of which are investment relations, special subjects, the distinctive procedure of the conclusion of the contract, the focus on the primary acquisition of investment objects. …”
Get full text

Black Fungus Complicated with COVID-19 in a Man with Underlying Non-Hodgkin’s Lymphoma by Erni J Nelwan, Rahajeng N Tunjungputri, Retno S Wardani, Retno Wahyuningsih

“…As black fungus is locally invasive, the majority of cases will involve tissue damage with local destruction and contiguous spread to nearby structure. We here with present a case of black fungus complicated with COVID-19 in a man with underlying non-Hodgkin’s lymphoma.…”
Get full text

A Power Asymmetry – goodness of fit analysis of the agricultural outcome of Romania’s accession negotiations to the European Union by Irina Râmniceanu

“…The goodness of fit judgment implies reference to Romania’s output and structure as well as to its experience with Community compatible measures and institutional systems. …”
Get full text

Assessment of reproductive outcomes and quality of life in patients after radical trachelectomy by A. L. Chernyshova, L. A. Kolomiets, Yu. M. Trushchuk, O. S. Dil, V. I. Chernov, E. S. Marchenko, T. L. Chekalkin, V. A. Antipov, S. E. Krasilnikov

“…Cervical cancer occupies a leading position in the structure of oncogynecological pathology. Radical trachelectomy (RT) has entered the standards of treatment of invasive cervical cancer in patients of reproductive age. …”
Get full text

A Novel Electrically Small Meandered Line Antenna with a Trident-Shaped Feeding Strip for Wireless Applications by Xueyao Ren, Xing Chen, Kama Huang

“…A novel electrically small antenna (ESA) which based on the meandered line structure is designed, fabricated, and measured. The proposed antenna whose total size is 13.50mm×13.51mm×0.8mm is designed to cater for the ISM (industrial, scientific, and medical) band of 2.45 GHz with a 𝑆11<−10dB bandwidth of 3.9%. …”
Get full text

ANALYSIS OF THE MAIN DETERMINANTS OF THE RUSSIAN CONSUMERS’ CURRENT MOOD by I. Yu. Aleksandrova

“…The socio-psychological phenomenon “consumer mood”, which is interpreted as an emotional and evaluative summary of the subjective understanding of the individual of various information elements that form the semantic structure of his implicit theory of consumption, has been investigated. …”
Get full text

Primary Epithelial Myoepithelial Carcinoma of Lung, Reporting of a Rare Entity, Its Molecular Histogenesis and Review of the Literature by Farzana Arif, Susan Wu, Shahriyour Andaz, Stewart Fox

“…Morphologically and immunohistochemically the tumor was characterized by two cell populations with epithelial and myoepithelial cells forming duct-like structure. The final diagnosis of epithelial myoepithelial carcinoma of lung was rendered.…”
Get full text

Scaling Laws in Language Families by Maelyson Rolim Fonseca dos Santos, Marcelo Andrade de Filgueiras Gomes

“…This finding sheds light on the underlying structure and organization of major language families, revealing intriguing insights into the nature of linguistic diversity and distribution.…”
Get full text

The Pathogenesis and Treatment of Complications in Nanophthalmos by Ning Yang, Siyan Jin, Linlin Ma, Jia Liu, Chenli Shan, Jinsong Zhao

“…Due to the special and complex structure of nanophthalmic eyes, the disorder is often associated with many complications, including high hyperopia, angle-closure glaucoma, and uveal effusion syndrome. …”
Get full text

PbFe1/2Nb1/2O3 ceramics as a base material for electromechanical transducers by D. Bochenek, P. Wawrzała

“…PbFe1/2Nb1/2O3 (PFN) material of perovskite structure has been rising interest because it connects both ferroelectric and antiferromagnetic properties. …”
Get full text