Results 11 to 20 of about 104,000 (262)
Head-to-Head Polymers XXXV. Head-to-Head Poly(2-vinylnaphthalene) [PDF]
Polymer Journal, 1986 Head-to-head poly(2-vinylnaphthalene) was prepared in five steps from 2-naphthylacetic acid. The methyl ester was brominated with N-bromosuccinimide and 2(2-naphthyl)2-bromoacetate treated with a copper/zinc couple, which gave dimethyl 2,3-di(2-naphthyl)succinate in moderate yield.
Nanasawa, Masato, Hu, Liping, Vogl, Otto
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South African Family Practice, 1997 No abstract available.
Garth Brink, Robert Heading
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Effect of process factors on solidification process of 10B21 steel bloom
Metalurgija, 2022 In this study, Finite Element Method (FEM) was used to simulate the solidification process of a large blank (280 mm × 325 mm) under different technological conditions.
X. K. Yang, D. Xu, B. Zheng, X. Yin
doaj
Cause analysis and improvement measures of steel-heaping in wire rods production
Metalurgija, 2022 Based on the composition detection results of steel inclusions, it is found that the steel-heaping reason of cold heading wire is caused by the slag entrapment in steelmaking process. In view of the above reasons, by controlling the fluctuation of liquid
L. Zheng, D. Xu, Y. C. Ren, B. Zheng
doaj
Remote Sensing, 2022 This study presents data on the directional flying behaviour of the five most abundant seabird species migrating across the Strait of Gibraltar in relation to the wind, as observed from the north coast, based on radar tracking, and identified to species ...
Gonzalo Muñoz Arroyo +1 more
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Determination of USV’s Direction Using Satellite and Fluxgate Compasses and GNSS-RTK
Sensors, 2022 The measurement of a mobile object’s movement direction is performed by means of various analogue and digital devices, including both autonomous and non-autonomous ones.
Artur Makar
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Effect of Football Size and Mass in Youth Football Head Impacts
Proceedings, 2020 In youth association football, the use of different size and/or mass footballs might represent a feasible intervention for addressing heading impact severity and player safety concerns.
Marcus Dunn, Dyfan Davies, John Hart
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Drones, 2023 Maize is among the most important grain crops. Aboveground biomass (AGB) is a key agroecological indicator for crop yield prediction and growth status monitoring, etc.
Lin Meng +11 more
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The head-to-head photodimer of indenoindene
IUCrData, 2020 Irradiation of 1-(1-benzocyclobutenylidene)benzocyclobutene gives indenoindene and its head-to-head photodimer nonacyclo[9.7.7.72,10.01,11.02,10.03,8.012,17.019,24.026,31]dotriaconta-3,5,7,12,14,16,19,21,23,26,28,30-dodecaene, C32H24. The molecule is built from four essentially planar indane units attached to an elongated cyclobutane ring.
Heiner Detert +2 more
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Sports, 2017 In soccer, headers are a tactical measure and influenced by numerous factors. The goal of this study was to identify whether changes in kinematics and muscular activity, especially of the head-stabilizing muscles, occur during headers when the core ...
Stephan Becker +3 more
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