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Inverse Magnetoelectric Effect in Disk Samples of Ferrite–Piezoelectric Composites
D. A. Filippov,
T. A. Galkina,
V. M. Laletin
Issue:
Volume 1, Issue 2, April 2013
Pages:
12-18
Abstract: A theory of the inverse magnetoelectric (ME) effect in the region of electromechanical resonance (EMR) for the samples in the form of a disk is presented. The expression for the coefficient of inverse ME-conversion on the effective parameter method is derived. It is shown that observed the peak increase of effect in the region of electromechanical re-sonance, resonance frequencies are differed for direct and inverse magnetoelectric effect. Resonance frequencies dependence on ferrite percentage for ferrite-nickel spinel and lead zirconate titanate samples are investigated experimentally.
Abstract: A theory of the inverse magnetoelectric (ME) effect in the region of electromechanical resonance (EMR) for the samples in the form of a disk is presented. The expression for the coefficient of inverse ME-conversion on the effective parameter method is derived. It is shown that observed the peak increase of effect in the region of electromechanical ...
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Evaluation of Cartosat-1 Satellite Triangulation & Dsms in Varied Terrain Conditions
Ashutosh Bhardwaj,
R. S. Chaterjee,
Kamal Jain
Issue:
Volume 1, Issue 2, April 2013
Pages:
19-24
Abstract: Digital surface models (DSMs) and Digital elevation models (DEMs) has become inevitable input for many applications including various types of modeling problems besides photogrammetric product generation such as orthoimages and visualization. Automatically generated DSMs using image matching techniques are an efficient means to extract bare earth DEMs or DTMs for various applications including modeling. This paper highlights and evaluates the accuracy of satellite triangulation, and DEM generated from Cartosat-1 data by using Rational Polynomial Coefficient’s (RPC’s) provided with the Cartosat-1 data along with ground control points (GCPs) collected through differential Global Positioning System (DGPS) surveys. Three study sites were taken for evaluation of DSMs in different topographic conditions, namely, a) Dehradun, Uttarakhand characterized by relatively high undulating terrain comprising of shivalik hills in the south and higher Himalayas on the north, b) Jaipur, Rajasthan having more of urban and plain agriculture area with Aravalli ranges, and c) Kendrapara, Orissa which is having a plain terrain conditions with agriculture fields, river, and sparsely populated area. DGPS surveys were conducted at the three sites to collect ground control points (GCPs) for satellite triangulation & subsequent analysis. The satellite triangulation resulted in RMSE of better than a pixel for all the three sites. The RMSE for DEM is varying from within a pixel for plain area to about four pixels for highly undulating terrain. The paper describes the positional and vertical accuracies achieved for cartosat-1 stereo data through photogrammetric process of satellite triangulation and Digital surface model generation in the three study sites having different topographic conditions.
Abstract: Digital surface models (DSMs) and Digital elevation models (DEMs) has become inevitable input for many applications including various types of modeling problems besides photogrammetric product generation such as orthoimages and visualization. Automatically generated DSMs using image matching techniques are an efficient means to extract bare earth D...
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Mine Equipment Selection for Ajabanoko Iron Ore Deposit, Kogi State, Nigeria
Adebimpe,
R. A.,
Akande,
J. M,
Arum C
Issue:
Volume 1, Issue 2, April 2013
Pages:
25-30
Abstract: Mine equipment selection is an integral part of mine planning and design. This study carried out mine equipment selection using combined multiple attributes decision - making method (MADM). Various models of five major mine equipment (dump trucks, wheel loaders, crawler excavators, bulldozers and blast hole drilling rigs) were considered for selection. The attributes considered for the equipment selection where appropriate are cost/unit, operating weight, payload capacity, bucket capacity, maximum digging depth and power. The mine equipment selection order for dump truck, wheel loader, excavator, bulldozer and drilling rig at the Ajabanoko iron ore deposit is EUCLID R90, CAT IT 62H, TEREX TC 225 LC, HITACHI 2505 and TEREX SKT-12 respectively. The study further established the importance of the attributes in the selection of the appropriate model of mine equipment.
Abstract: Mine equipment selection is an integral part of mine planning and design. This study carried out mine equipment selection using combined multiple attributes decision - making method (MADM). Various models of five major mine equipment (dump trucks, wheel loaders, crawler excavators, bulldozers and blast hole drilling rigs) were considered for select...
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Levshenko T. Toxicologic and Hygienic Characteristics of p-373-2-20; p-5003-ac;p-294-2-35 Polyols and Prognosis of Their Potential Danger for Environment.
Zhukov V.,
Telegin V.,
Rezunenko Y.,
Zaytseva O.,
Knigavko V.,
Grankina S.,
Levshenko T.
Issue:
Volume 1, Issue 2, April 2013
Pages:
31-34
Received:
10 April 2013
Published:
20 May 2013
Abstract: Studied the toxic effects polyoxipropylenpolyols in acute and subacute experiments on warm-blooded animals. It is established that they are pertained to the IV hazard class; have polytropic general toxic effect; on the level of toxic doses they influence on the generative function and the genetic apparatus; inhibit and disrupt the interaction between the cellular and humoral immunity.Experiments were performed on adult Wistar white rats, white mouses, guinea pigs, hybrid mouse lines BALB / C, (SBAc57BL) F1, CBA / Lac, and rabbits of the chinchilla race [4-6]. The objects of the investigation were polyoxipropylenthriols with molecular masses 5000M (P-5003-AC), and 370M (P-373-2-20), and polyoxipropylated amine with molecular mass 290M (P-294-2-35). Polyoxipropylenpolyols P-5003-AC, P-373-2-20 and P-294-2-35 in doses of 1/10 and 1/100 DL50 have a toxic effect on the generatic function and the genetic apparatus, and in doses 1/10, 1/100 and 1/1000 DL50 inhibit and disrupt the cooperative interaction of cellular and humoral immunity. In all cases, the dose of 1/10000 DL50 was inoperative, it is equal to 3.23; 3.62 and 1.48 mg / kg of animal weight, respectively, for P-373-2-20, P-5003-AC and P-294-2- 35.
Abstract: Studied the toxic effects polyoxipropylenpolyols in acute and subacute experiments on warm-blooded animals. It is established that they are pertained to the IV hazard class; have polytropic general toxic effect; on the level of toxic doses they influence on the generative function and the genetic apparatus; inhibit and disrupt the interaction betwe...
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