Quantitative Structure-Activity Relationship Study of Fatty Acid Derivatives as Lubricant Additive by Rahmawita Sugesti, Komar Sutriah, Mohammad Khotib

“…In this study, the correlation between the chemical structure of fatty acid derivative compounds and their physical properties through the quantitative structure-activity relationship (QSAR) using the density functional theory (DFT) was determined. …”
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Crust and Upper Mantle Structure of Mars Determined from Surface Wave Analysis by Víctor Corchete

“…The crust and upper mantle structure of Mars is determined in the depth range of 0 to 100 km, by means of dispersion analysis and its inversion, which is performed for the surface waves present in the traces of the seismic event: S1094b. …”
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Meshing performance analysis of the measured gear with error based on the multi-section structure by SONG Meiqi, WANG Zhonghou, CHEN Mingzhi, LI Yan, WANG Fa

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Genetic diversity and population structure in Polygonum cespitosum: insights to an ongoing plant invasion. by Silvia Matesanz, Kathryn E Theiss, Kent E Holsinger, Sonia E Sultan

“…Molecular markers can help elucidate how neutral evolutionary forces and introduction history contribute to genetic variation in invaders. We examined genetic diversity, population structure and colonization patterns in the invasive Polygonum cespitosum, a highly selfing, tetraploid Asian annual introduced to North America. …”
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SHAPE RESTORATIONS OF OBJECT SURFACE ON POLARIZATION STRUCTURE OF REFLECTED ELECTROMAGNETIC WAVE FIELD by A. I. Kozlov, V. Yu. Maslov

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Influence of Host Sex on Mycobiome Structure in Porcellio laevis Using Metabarcoding Analysis by Seung-Yoon Oh, Yehyeon Cha

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Investigation of genetic structure of angora goat by using starch gel electrophoretic method by Vahdettin Altunok, Mehmet Nizamlıoğlu, Zafer Bulut

“…In this present study, we determined the genetic structure of Angora and other breeds of goats. For this purpose, five different enzyme loci; superoxide dismutase (SOD), carbonic anhydrase 1 (CA1), esterase D (EsD), glutamic oxaloasetic transaminase (GOT), phosphogluconate dehydrogenase (PGD) and their 6 loci were examined by starch gel electrophoresis. …”
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Progressive Collapse Resistance Mechanism of RC Frame Structure Considering Reinforcement Corrosion by Chao Bao, Dahai Lv, Huxiang Wang, Yuhang Zhang, Xiaotong Ma, Kar Sing Lim, Juping Zhang

“…Corrosion causes reduction in cross-sectional area of reinforcement, deterioration of mechanical properties, and degradation of bonding properties between reinforced concrete, which are the most important factors leading to the degradation of structural service performance. In order to investigate the progressive collapse mechanism of a corroded reinforced concrete frame structure, the failure modes, characteristics of the vertical displacement, and load capacity are studied using the finite element method. …”
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Exploring the Forest Structure and Floristic Composition Patterns of the Equatorial Chocó, Esmeraldas Province by Pablo Enrique Lozano Carpio, Bente Klitgaard, Walter Palacios, Janeth Santiana, Byron Medina, Carlos Morales, Juan Iglesias

“…This study compared the forest structure, floristic diversity, and forest ecology patterns of the Chocoan forests within the Esmeraldas province of Ecuador. …”
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A Treatment Technology for Optimizing the Stress State of Railway Tunnel Bottom Structure by Zili Han, Weibin Ma, Jinfei Chai, Zhenyu Zhu, Chuannian Lin, Zeli An, Chaofeng Ma, Xueliang Xu, Tianyuan Xu

“…The research shows that (1) the technology is simple and can effectively repair the defects of railway tunnel bottom structure under the conditions of the narrow site, short time of maintenance skylight, strict requirements of track size variation, and no interference with the normal operation of the train, which has great significance and broad application prospect. (2) The drainage system of the existing railway tunnel bottom structure can be applied to the reconstruction of the railway tunnel bottom structure. …”
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Climate regulates alpine lake ice cover phenology and aquatic ecosystem structure by Daniel L. Preston, Nel Caine, Diane M. McKnight, Mark W. Williams, Katherina Hell, Matthew P. Miller, Sarah J. Hart, Pieter T. J. Johnson

“…Abstract High‐elevation aquatic ecosystems are highly vulnerable to climate change, yet relatively few records are available to characterize shifts in ecosystem structure or their underlying mechanisms. Using a long‐term data set on seven alpine lakes (3126 to 3620 m) in Colorado, USA, we show that ice‐off dates have shifted 7 days earlier over the past 33 years and that spring weather conditions—especially snowfall—drive yearly variation in ice‐off timing. …”
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On the velocity-stress formulation for geometrically nonlinear elastodynamics and its structure-preserving discretization by Tobias Thoma, Paul Kotyczka, Herbert Egger

“…The particular geometric structure of the weak formulation can be preserved under Galerkin approximation via appropriate mixed finite elements. …”
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Study on Structure Design and Motion Characteristics of Pneumatic Flexible Wrist with Braking Function by Hongbo Liu, Qi Liu

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Experimental Study on Compressive Strength of Ultrahigh Performance Concrete Prefabricated Wall Structure by Jianfeng Cao, Yunfei Dai, Liqiang Hu, Yu luo, Fang Long, Shiying Ding

“…In order to study the influence of two parameters, height-thickness ratio and reinforcement ratio, on the compressive performance of prefabricated recycled concrete block-filled core walls, the author proposes a test method for the compressive strength of wall structures. In this method, 9 walls of dry and full-fill masonry are used, and the test measuring device and the arrangement of measuring points are designed to carry out the loading test. …”
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Influence of the pressure of compacted glass powders on the final structure of sintered glass-ceramics by N.B. Jordanov, D. Tatchev, E. Karamanova, A. Karamanov

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The Trypanosome Exocyst: A Conserved Structure Revealing a New Role in Endocytosis. by Cordula M Boehm, Samson Obado, Catarina Gadelha, Alexandra Kaupisch, Paul T Manna, Gwyn W Gould, Mary Munson, Brian T Chait, Michael P Rout, Mark C Field

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Prenatal origins of temperament: fetal growth, brain structure, and inhibitory control in adolescence. by Wolff Schlotz, Keith M Godfrey, David I Phillips

“…<h4>Objective</h4>Individual differences in the temperamental dimension of effortful control are constitutionally based and have been associated with an adverse prenatal developmental environment, with structural brain alterations presenting a potential mechanism. …”
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Crystal structure transformation and lattice impurities migration of quartz during chlorine roasting by Wenda Guo, Haolong Lu, Zhenyue Zhang, Ling Jiang, Hanjun Wu, Defeng Liu, Ruan Chi

“…The results showed that the high-purity quartz with total impurities less than 50 μg/g could be obtained from purified quartz after being treated with chlorine at 1200 °C. The variation of crystal structure and the lattice impurities migration of quartz during chlorine roasting were studied through in-situ XRD, TGA, SEM-EDS, ICP-MS, FT-IR and XPS analysis. …”
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Damage analysis and optimal design of micro-structure milling cutter based on peridynamics. by Zhongwei Ren, Jing Deng, Hongwan Jiang, Sen Yuan, Xi Yue, Chuchun Tian

“…When the milling time is 3.5×10-6 s, the tool's major cutting edge combined displacement increases most rapidly, the major flank optimization effect is the most obvious, and the resultant displacement is reduced by about 37.06%. By optimizing the structural parameters of micro-grooves on the rake face, this study enhances the comprehensive performance of the tool and unveils the formation, distribution, and variation patterns of near-field cracks on the tool's cutting edge. …”
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Effects of operation schemes on hydrodynamics and thermal structure in a deep dimictic reservoir by Jia Wang, Lunyu Wu, Yuanjian Wang, Yujun Yi

“…The operation scheme significantly influences the hydrodynamic characteristics and thermal structure of reservoirs by altering regulation cycles and water level conditions, which are crucial for shaping the ecological environment. …”
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