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Ewa Krzywy-Gawrońska

Impact of composts with the participation of municipal sewage sludge on the content of the total forms of copper, manganese and zinc in soil

Pot experiment was conducted in the hall of vegetation at University of Agriculture in Szczecin over the years 2001 - 2003 on the soil of IVa complex of agriculture usefulness (very good rye) numbered among loamy sand as regards to the granulometric composition. The composts used in the experiment were after 8 months of decomposition. There was more nitrogen and phosphorus in the composts in comparison with potassium. In the pattern of the research the doses of composts, corresponding with 100, 200 and 300 kg N·ha-1, i.e. 0.63; 0.99 and 0.126 g N pot were used. The experiment was conducted in four repetitions. In 2001 spring rape Licomos variety was the test plant, in 2002 it was the spring triticale Wanad variety and in 2003 oats Polar variety. In the second and third year of the research of the soil there was 0.475 g N, 0.137 g P and 0.315 g K applied into every pot. It corresponded with the doses of 150 kg N·ha-1, 43.6 P·ha-1 and 100 kg K·ha-1. Mineral fertilizers were used in the form of urea, double superphosphate, 60% potassium salt.

The obtained results of the research indicate that the content of the total forms of copper, manganese and zinc in the composts, with the participation of sewage sludge fulfilled the norms concerning the organic fertilizers.

Over the years, since the time of an application into the soil the composts with the participation of municipal sewage sludge, the content of the total forms of copper, manganese and zinc has decreased. It was caused by the uptake of these micronutrients by plants.

Open access

G. Tęcza and J. Głownia

References [1] Telejko, I. (2004). Cast steel embrittlement within the liquidsolid temperature range. Kraków: Akapit. (in Polish). [2] Kniaginin, G. (1968). Cast austenitic manganese steel. Kraków: PWN. (in Polish). [3] Tęcza, G., Głownia, J., Rąpała, M. & Stańczak, S. (2008). The effect of segregation in heavy-wall Hadfield steel castings. Foundry Journal of the Polish Foundrymen’s Association, (1-2), 10-15. [4] Stradomski, Z. (2001). On the explosive hardening of cast Hadfield steel

Open access

M. Tenerowicz and M. Sułowski

, (24), 71001-1009 (2012). [11] M. Sułowski, Powder Metallurgy 53 , (2), 125-140 (2010). [12] Ch. Fiał, E. Dudrová, M. Kabátová, M. Kupková, M. Selecká, M. Sułowski, A. Ciaś, Powder Metallurgy Progress 15, special issue, 124-129 (2015). [13] Ch. Fiał, E. Dudrová, M. Kabátová, M. Kupková, M. Selecká, M. Sułowski, A. Ciaś, Powder Metallurgy Progress 14 , (3), 137–147 (2014). [14] A. Ciaś, Science of Sintering 47 , (1), 61-69 (2015) [15] P. Hebda. Sinteraustempering of manganese steels sintered in 1120°C. Master Thesis, AGH, Cracow, 2014

Open access

S.K. Kemei, M.S.K. Kirui, F.G. Ndiritu, R.G. Ngumbu, P.M. Odhiambo, D.M.G. Leite, A.L.J. Pereira and J.H. Dias Da Silva

Abstract

Dynamical mechanical analysis yields information about the mechanical properties of a material as a function of deforming factors, such as temperature, oscillating stress and strain amplitudes. GaAs and Mn-doped GaAs at varied levels, used in making electronic devices, suffer from damage due to changes in environmental temperatures. This is a defective factor experienced during winter and summer seasons. Hence, there was a need to establish the best amount of manganese to be doped in GaAs so as to obtain a mechanically stable spin injector material to make electronic devices. Mechanical properties of Ga1-xMnxAs spin injector were studied in relation to temperatures above room temperature (25 °C). Here, creep compliance, Young’s moduli and creep recovery for all studied samples with different manganese doping levels (MDLs) were determined using DMA 2980 Instrument from TA instruments Inc. The study was conducted using displace-recover programme on DMA creep mode with a single cantilever clamp. The samples were prepared using RF sputtering techniques. From the creep compliance study it was found that MDL of 10 % was appropriate at 30 °C and 40 °C. The data obtained can be useful to the spintronic and electronic device engineers in designing the appropriate devices to use at 30 °C and above or equal to 40 °C.

Open access

J. Lacaze, J. Sertucha, P. Larrañaga and R. Suárez

Abstract

Copper, manganese and tin are commonly used as pearlite promoter elements in cast irons. A number of studies have been aimed at quantitatively evaluate the effect of each of these elements, individually or at given levels of the others. As a matter of fact, while tin may be necessary for achieving a fully pearlitic matrix, it is known that when in excess it is detrimental for mechanical properties. As the pearlite promoting effect of each of those elements is totally different, it is of real interest to know the optimum combination of them for a given cooling rate. The present report is a first part of a work dedicated at characterizing the best alloying levels in terms of room temperature mechanical properties of as-cast pearlitic materials.

Open access

Mohsen Janmohammadi

(Cu, Zn, Mn, Fe, Ni, Mo, B, Cl). Curr. Opin. Plant Biol., 12 (3), 259-266. Hebbern, C. A, Laursen, K. H, Ladegaard, A. H, Schmidt, S. B., Pedas, P., Bruhn, D., Schjoerring, J. K., Wulfsohn, D., Husted, S. (2009). Latent manganese deficiency increases transpiration in barley (Hordeum vulgare). Physiol. Plant., 135 (3), 307-316. Janmohammadi, M., Mostafavi, H., Sabaghnia, N. (2014). Effects of enzymatic biofertiliser on growth and yield of lentil genotypes under deficit irrigation. Proc. Latvian Acad. Sci. Section B, 68 (3/4), 20

Open access

Zorica Jovanovic, Olgica Mihaljevic and Irena Kostic

. Cadmium: an endocrine disrupter that affects gene expression in the liver and brain of juvenile rainbow trout. Biol Reprod. 2005; 72(1): 119-26. 12. Avila DS, Puntel RL, Aschner M. Manganese in health and disease. Met Ions Life Sci. 2013; 13: 199-227. doi: 10.1007/978-94-007-7500-8-7. 13. Bouabid S, Tinakoua A, Lakhdar-Ghazal N, Benazzouz A. Manganese Neurotoxicity: behavioral disorders associated with dysfunctions in the basal ganglia and neurochemical transmission. J Neurochem. 2015; doi: 10.1111/jnc.13442. 14. Kwakye

Open access

Tomasz Kleiber, Klaudia Borowiak, Anna Budka and Dariusz Kayzer

References Alam S, Ryushi K, Fumihito A, Kamei S and Kawai S. 2006. Alleviation of manganese phytotoxicity in barley with cal-cium. Journal of Plant Nutrition 29: 59-74. Budka A, Borowiak K, Zbierska J, Kayzer D and Krzesiński W. 2001. Application of a multidimensional linear model to compare degrees of tobacco leaf injury caused by tropos-pheric ozone at rural and urban exposure sites. Fresenius Environmental Bulletin 4: 969-975. Cakmak I, and Marschner H. 1988. Enhanced superoxide rad-ical production in roots of Zn deficient plants. Journal of

Open access

Zbigniew Surowiec, Marek Wiertel, Wojciech Gac and Mieczysław Budzyński

-Patkowska, A., & Zawadzki, W. (2012). Preparation, characterization and catalytic activity of palladium nanoparticles embedded in the mesoporous silica matrices. World J. Nano Sci. Eng. , 2 , 117–125. http://dx.doi.org/10.4236/wjnse.2012.23015 . 4. Sahoo, B., Sahu, S. K., Nayak, S., Dharaa, D., & Pramanik, P. (2012). Fabrication of magnetic mesoporous manganese ferrite nanocomposites as efficient catalyst for degradation of dye pollutants. Catal. Sci. Technol ., 2 , 1367–1374. DOI: 10.1039/c2cy20026k. 5. Kumar, C. S. S. R., & Mohammad, F. (2011). Magnetic

Open access

Muna H. I. Al-Zubaidy and Fouad K. Mohammad

References 1. Bowler RM, Gocheva V, Harris M, Ngo L, Abdelouahab N, Wilkinson J, Doty RL, Park R, Roels HA. Prospective study on neurotoxic effects in manganese-exposed bridge construction welders. Neurotoxicology 2011;32:596-605. 2. Talavera EJ, Arcaya JL, Giraldoth D, Suarez J, Bonilla E. Decrease in spontaneous motor activity and in brain lipid peroxidation in manganese and melatonin treated mice. Neurochem Res 1999;24:705-8. 3. Salehi F, Krewski D, Mergler D, Normandin L, Kennedy G, Philippe S, Zayed