vol. IV, no. 4, Spring 2004

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EFFECT OF HEAT TREATMENT AND CROSS SECTION ON THE CRASHWORTHINESS OF 51CRV4 SPRING STEEL oleh Çiğdem Di̇ndar, Selçuk Karagöz, Hüseyin Beytüt

"…In this study, the 51CrV4 spring steel was used as crash box material and its crashworthiness was investigated. …"
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Effect of Quenching Conditions on the Microstructure and Mechanical Properties of 51CrV4 Spring Steel oleh Lin Zhang, Dehai Gong, Yunchao Li, Xiaojun Wang, Xixi Ren, Engang Wang

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The Effect of Niobium Addition and Pre-Annealing on the Tensile Properties of 52CrMoV4 Spring Steel oleh Arzu Ozuyagli, Zafer Barlas, Ugur Ozsarac, Suleyman Can Kurnaz

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Physical Mapping of QTL in Four Spring Wheat Populations under Conventional and Organic Management Systems. I. Earliness oleh Kassa Semagn, Muhammad Iqbal, Hua Chen, Enid Perez-Lara, Darcy H. Bemister, Rongrong Xiang, Jun Zou, Muhammad Asif, Atif Kamran, Amidou N’Diaye, Harpinder Randhawa, Curtis Pozniak, Dean Spaner

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Influence of Austenitisation Time and Temperature on Grain Size and Martensite Start of 51CrV4 Spring Steel oleh Anže Bajželj, Jaka Burja

"…51CrV4 spring steel is a martensitic steel grade that is heat treated by quenching and tempering. …"
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Effects of quenching and tempering heat treatment on microstructure, mechanical properties, and fatigue crack growth behavior of 51CrV4 spring steel oleh Chaobin Lai, Wei Huang, Shengci Li, Tao Liu, Ruiguo Lv, Xiaoyong Tang, Jianlin Yu

"…Herein, the microstructure, mechanical properties, and fatigue crack growth (FCG) behavior of 51CrV4 spring steels under different quenching and tempering heat treatment were studied. …"
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Effects of the Ultrasonic Assisted Surface Rolling Process on the Fatigue Crack Initiation Position Distribution and Fatigue Life of 51CrV4 Spring Steel oleh Changxing Xu, Yilong Liang, Ming Yang, Jiabang Yu, Xiang Peng

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Generation Mechanism of MgO and Al₂O₃ Inclusions in 51CrV4 Spring Steel Based on the Ion–Molecule Coexistence Theory oleh Jialiu Lei, Hangyu Zhu, Dongnan Zhao, Zhengliang Xue

"…The presence of MgO·Al₂O₃ inclusions in 51CrV4 spring steel is detrimental to the alloy’s castability and fatigue properties. …"
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Environmental conditions of alpine springs of the upper Po River (NW Italy) on the basis of their epilithic diatom communities oleh Maurizio Battegazzore

"…Diatom (Bacillariophyceae) assemblages were sampled in 7 springs in the upper part of the River Po basin in the summer of 2010. Four springs are situated in the mountainous part of the study area while three are in the lowland plain. …"
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Determination of radon, major and trace elements in water samples from springs and wells of northern Mexico State, Mexico oleh P. Peña, J. L. Seidel, M. A. Armienta, M. B. E. López, M. G. Cisniega, N. Segovia, R. N. López, L. Godínez, E. Tamez

"…Radon was determined in four springs and three wells from urban and agricultural zones in the middle part of the Mexican Neovolcanic Belt. …"
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Hydrodynamic characteristics of Mt. Biokovo foothill springs in Croatia oleh Mladen Kuhta, Željka Brkić, Andrej Stroj

"…This article analyses hydrographs and thermographs from four springs located in the foothills of the Mt. Biokovo massif in southern Croatia. …"
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Assessing spatial and temporal changes in diversity of copepod crustaceans: a key step for biodiversity conservation in groundwater-fed springs oleh Francesco Cerasoli, Barbara Fiasca, Tiziana Di Lorenzo, Tiziana Di Lorenzo, Annalina Lombardi, Barbara Tomassetti, Valeria Lorenzi, Ilaria Vaccarelli, Ilaria Vaccarelli, Mattia Di Cicco, Marco Petitta, Diana M. P. Galassi

"…Modelling of recharge rates for all the four springs over 2001–2020 suggested a potential >40% recharge deficit under dry conditions. …"
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Valuing the Recreation Benefits of Natural Springs in Florida oleh Qianyan Wu, Xiang Bi, Kelly A. Grogan, Tatiana Borisova

"…It further compares the performance of count data models correcting for endogenous stratification and truncation, and finds that the annual consumer surplus per person per trip is between $20 and $43, and the annual total recreational value for the four springs studied is about $25 million. Furthermore, visitors are willing to contribute $12 to $14 per person per trip for springs restoration without reducing trip demand.…"
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How Fast Does the Steppe Eagle Population Decline? Survey Results from Eilat, Israel oleh Noam Weiss, Eli Haviv, Dan Alon, Yoav Perlman, Jessica Schäckermann

"…We then compared our data with the Steppe Eagle data collected during four springs between 1977 and 1988. We did not find a significant decline in Steppe Eagle numbers passing Eilat on their spring migration between the two data sets. …"
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A New Model to Calculate Stress Relaxation of Viscoelastic Material for Polyester-Wool-Spandex Yarn with Analytical Mechanics Approach oleh Valentinus Galih Vidia Putra, Juliany Ningsih Mohamad, Yusril Yusuf

"…In this research, a new approximation of the analytical mechanics model of stress relaxation using a system of four springs and a dashpot to determine viscoelastic yarn properties as polyester-wool-spandex has been studied. …"
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Vibration Isolation and Launch Performance Enhancement of the Spacecraft In-Orbit Launch Design Using the Nonlinear Dynamic Feature oleh Xu Zhou, Weihao Tong, Lu Dai, Boyuan Wei

"…The in-orbit launch device has four springs, where the stroke directions of two springs are perpendicular to the launch direction so as to produce nonlinearity with negative stiffness for enhancing the launch velocity. …"
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Axial and radial forces of cross-bridges depend on lattice spacing. oleh C David Williams, Michael Regnier, Thomas L Daniel

"…We describe a more complex myosin cross-bridge model that uses multiple springs to replicate myosin's force-generating power stroke and account for the effects of lattice spacing and radial force. The four springs which comprise this model (the 4sXB) correspond to the mechanically relevant portions of myosin's structure. …"
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Increasing the Effectiveness of Electricity-Generating Floors Through the Mechanical Energy of DC Generators oleh Sagita Rochman, Rasyida Shabihah Zukro Aini, Mussafa Billah

"…The proposed platform consists of a platform design that utilises the translational motion of the gears on the gear rack and is assisted by four springs surrounding the sides of the iron plate. …"
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Investigation of hydraulic continuity and mixing between Urmia Water Lake and Shabestar coastal aquifer oleh sadegh saberimehr, asghar asgharimoghadam

"…In June 2014, Groundwater samples were collected from twenty six wells and four springs in Shabestar Plain to clarifying the origin of salinity. …"
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