Results 71 to 80 of about 3,346 (228)

Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

steel research international, EarlyView.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler, Marek Gocnik, Phillip Haslberger, Matthew Galler, Andreas Stark, Oleksandr Glushko, Jozef Keckes, Ronald Schnitzer   +7 more
wiley   +1 more source

Determinação de teores ótimos de nutrientes em soja pelos métodos chance matemática, sistema integrado de diagnose e recomendação e diagnose da composição nutricional Determination of optimal nutrient contents for soybean by the mathematical chance, diagnosis and recommendation integrated system and compositional nutrient diagnosis methods

Revista Brasileira de Ciência do Solo, 2007
Diversos estudos têm demonstrado o uso promissor de métodos de diagnose nutricional para definição de teores ótimos e níveis críticos de nutrientes em tecidos vegetais.
Eliane Oshiro Mocelin Urano, Carlos Hissao Kurihara, Shizuo Maeda, Antonio Carlos Tadeu Vitorino, Manoel Carlos Gonçalves, Marlene Estevão Marchetti   +5 more
doaj   +1 more source

Dried-Fruit Processing at Dole Dried Fruit and Nut

Review of Agricultural Economics, 1997
This study presents a case where classic financial analysis was applied to an operations problem in the Dole Dried Fruit and Nut Division of Dole Food Company. Dole Dried Fruit and Nut used three quantitative measures (net present value, internal rate of return, and payback period) and qualitative factors to determine whether it should consolidate ...
Lois Schertz Willett, Mark Castaldi
openaire   +1 more source

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

steel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt, Patrick Veyel, Lars Gebel, Christian Meyer, Robert Thomas, Michael Thomas, Christoph Herrmann   +6 more
wiley   +1 more source

Soil fertility, leaf nutrient concentration and yield limiting nutrients in oil palm (Elaeis guineensis) plantations of Surat district of Gujarat

The Indian Journal of Agricultural Sciences, 2016
A survey was conducted for assessment of soil fertility status, leaf nutrient concentration and identification of yield limiting nutrients in twenty six oil palm (Elaeis guineensis Jacq.) plantations in Surat district of Gujarat.
BEHERA K BEHERA, B N RAO, K SURESH, K RAMACHANDRUDU, K MANORAMA   +4 more
doaj   +1 more source

Using Thermodynamics and Microstructure to Mitigate Overfitting in Pellet Reduction Models

steel research international, EarlyView.
A in time and space discretized, thermodynamically sound model for direct reduction of iron oxide pellets is described. The number of fitting parameters is drastically reduced compared to existing models. Nevertheless, fitting kinetic parameters based on conversion degree data alone leads to overfitting, which can be mitigated by correlating the ...
Ömer K. Büyükuslu, Fabrice Yang, Dierk Raabe, Moritz to Baben, Anna L. Ravensburg   +4 more
wiley   +1 more source

NUTRITIONAL DIAGNOSIS FOR COTTON UNDER SAVANNAH BY USING THE DRIS AND SUFFICIENCY RANGES METHODS DIAGNOSE NUTRICIONAL PELOS MÉTODOS DRIS E FAIXAS DE CONCENTRAÇÃO PARA ALGODOEIRO CULTIVADO SOB CERRADO

Pesquisa Agropecuária Tropical, 2011
Brazil is the fourth largest cotton exporter and fifth largest producer in the world, however, it is predominantly cultivated under savannah soils, which present natural nutrients limitations.
Paulo Alcanfor Ximenes, Paulo César Ribeiro da Cunha, Noé Barroso da Silva, Wilson Mozena Leandro, Roberta de Freitas Souza   +4 more
doaj   +1 more source

Effect of Intrinsic Carbon in Hot Briquetted Iron on Melting and Refining Efficiency under Electric Arc Furnace Conditions for Sustainable Steelmaking with Active Use of H2‐Reduced Iron

steel research international, EarlyView.
The melting behavior of hot briquetted iron (HBI) is observed and compared with FactSage computing simulation. When using HBI in an electric arc furnace process, a proper design of intrinsic carbon content in HBI, charging ratio of HBI, and addition of lime are proposed to be essential to control the slag volume, maintain slag basicity, and mitigate ...
Min Joo Lee, Joo Hyun Park
wiley   +1 more source

Obliczenia oraz interpretacja w zintegrowanym systemie diagnostyki i zaleceń nawozowych

Agronomy Science, 2004
The paper presents a way of calculation in the method of the diagnosis and recommendation integrated system DRIS, described in Appendix 5 by Reuben B. Beverly, in the book of J. Benton Jones Jr, Benjamin Wolf and Harry A. Mills. 1991.
Stanisław Z. Łabuda, Reuben B. Beverly
doaj  

Effective Equilibrium Reaction Zone Modeling of Hydrogen Plasma Smelting Reduction: A Scenario Analysis

steel research international, EarlyView.
The study presents a dynamic zonal model for hydrogen plasma smelting reduction (HPSR) in direct current arc furnaces, predicting time‐dependent behavior of metal, slag, and off‐gas. The study considers various industrial scenarios to quantify energy demand, hydrogen utilization, degree of reduction, and other operational sensitivities.
Tristan K. Wickham, Stephanus P. Du Preez, Dmitri G. Bessarabov, Stephan C. Louw, Ernst L. J. Kleynhans   +4 more
wiley   +1 more source