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Globally, corn is the most economically important crop, surpassing other cereals of economic importance. However, the tillage methods, monoculture and the abuse of synthetic agrochemicals used in Mexico have led to the loss of fertility and soil yield. In this sense, the application of alternative fertilization methods based on chemical fertilizer, organic matter and biofertilizer, applied alone or in combination, can stimulate the defense systems of corn plants and increase their yield. Therefore, in this research, some fertilization schemes were tested on purple corn plants of the Kculli race through the evaluation of some growth and yield variables, as well as the subsequent evaluation of the chemical characteristics of the corn grain produced in each fertilization scheme. The results indicate highly significant differences (p ≤ 0.05) between treatments, for the different growth and yield variables studied. Of all the fertilization schemes evaluated, treatment T7 obtained the best grain yield of 6.19 ± 0.07 t ha−1, with respect to treatment T1 of 1.02 ± 0.01 t ha−1, as well as the highest protein content and starch quality. Being clear the positive effect of the adequate contribution of the macro and micronutrients used exerts on the corn crop in each of the fertilization schemes studied. On the other hand, the analysis carried out on the grains was found within the values reported by other authors.

The main purpose of waste management should be reclamation of valuable raw materials and, consequently, protection of natural environment by reducing consumption of deposits and energy. The metallurgical industry generates considerable quantities of waste containing iron. This article addresses environment-friendly solutions for utilisation of such waste in the form of slime, sludge and dust. What has been discussed is the impact of the technologies proposed on natural environment. [ABSTRACT FROM AUTHOR]

In the European Union one of the most important activities is the recovery and recycling of waste including foundry waste. In the article waste arising from production of iron casting was presented. Selected physic-chemical properties of iron-bearing waste were defined. Opportunities of waste management are related to their chemical construction as well as some physical properties. On the basic the results of research the solutions of foundry waste management were proposed. [ABSTRACT FROM AUTHOR]

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Recycling of by-products of the steelmaking process in electric arc (EAF) furnaces is an important activity from the perspective of environmental protection as well as the steelmaking industry itself. This article is a discussion concerning the selected research results in terms of utilisation of steelmaking dusts containing 4 - 12 % of zinc in manufacture of cement bricks, ceramic construction materials as well as coloured glass products. The research conducted has implied that using steelmaking dusts in non-metallurgical industries is both possible and reasonable. [ABSTRACT FROM AUTHOR]

The title compound 2-[({[(4-methylphenyl)sulfonyl]methyl}amino)carbonyl]-1,3-dioxo-2,3-dihydro-1 H-inden-2-yl 2-thiophenecarboxylate is synthesized and studied by the single crystal X-ray diffraction method. The structure of the product is confirmed by IR, H and C NMR spectroscopy, and mass spectrometry. The structure is solved in the C2/ c monoclinic space group with a = 16.739(3) Å, b = 11.087(3) Å, c = 23.194(4) Å, β = 93.32(3)°, V = 4297.2(16) Å, Z = 8, R1 = 0.033 and wR2 = 0.088. [ABSTRACT FROM AUTHOR]

The analysis of the changes in the crude steel production volumes implies gradual increase of production since the mid 20th century. This tendency has been slightly hampered by the economic depression. At the same time, the market requirements enforce improvement of the quality of the products manufactured on simultaneous minimisation of the production costs. One of the tools applied to solve these problems is mathematical optimisation. The author of this paper has presented an example of application of the multi-criteria optimisation method to improvement of efficiency of steel smelting in an electric arc furnace (EAF) through appropriate choice of the charge scrap. A measurable effect of applying such a methodology of choosing the metal charge is the ability to reduce the unit cost of steel smelting. [ABSTRACT FROM AUTHOR]

Abstract: A novel compound, [4-NH2PyH]8[Bi2Cl11][Bi2Cl9(H2O)2] (abbreviated as 4APCB), was synthesized and structurally characterized at 100, 150 and 301K. 4APCB crystallizes in a triclinic centrosymmetric space group, . The anionic framework is built up of two types of inorganic fragments, namely and , and 4-aminopyridinium- cations stacked between inorganic chains via π–π interactions. The latter type of anionic fragment was found for the first time in halobismuthate(III) solid complexes. Based on the results of differential scanning calorimetry (DSC), dilatometric and dielectric studies, 4APCB was found to undergo irreversible phase transition at ca. 342K, accompanied by a partial decomposition of the compound (loss of water molecules). This chemical transformation is well reflected in the infrared spectrum of 4APCB. [Copyright &y& Elsevier]