2,022 research outputs found
EVALUASI MINAT BELAJAR PENDIDIKAN JASMANI PELAJAR SMP NEGERI 5 MEUREUBO KECAMATAN MEUREUBO KABUPATEN ACEH BARAT TAHUN PELAJARAN 2014/2015
Extremal functions for the anisotropic Sobolev inequalities
The existence of multiple nonnegative solutions to the anisotropic critical
problem - \sum_{i=1}^{N} \frac{\partial}{\partial x_i} (| \frac{\partial
u}{\partial x_i} |^{p_i-2} \frac{\partial u}{\partial x_i}) = |u|^{p^*-2} u
{in} \mathbb{R}^N is proved in suitable anisotropic Sobolev spaces. The
solutions correspond to extremal functions of a certain best Sobolev constant.
The main tool in our study is an adaptation of the well-known
concentration-compactness lemma of P.-L. Lions to anisotropic operators.
Futhermore, we show that the set of nontrival solutions \calS is included in
and is located outside of a ball of radius in
The effect of strain and temperature on the critical current density of high-field superconductors
A J(B,ϵ) probe has been designed and built to measure the critical current density, J(_c), versus strain on short superconducting wires and tapes. Measurements can be made from 2K to 4.2K in high magnetic fields in our 17T magnet system and at 77K for strains up to ±1.0%.The effect of strain on J(_c) has been measured on a 0.37mm diameter Nb(_3)Sn wire at 4.2K and 2.9K from l0T up to 14T. The compressive pre-strain of the wire measured at 4.2K is found to be about 0.3%. At 4.2K, the value of B(_c2) maximum is 19.6T and at 2.9K is 21.2T. The functional form of the flux pinning of the sample at 4.2K can be expressed as F(_p)=4.20±0.57xl0(^8)[B(_c2)(ϵ)](^1.67±0.7b(^1/2)(l-b)(^2); and for the sample at 2.9K it is F(_p)=1.37±0.05xl0(^10)[B(_c2)(ϵ)](^0.54±0.16b(^1/2)(l-b)(^2). From temperature scaling, the functional form is F(_p)=3.63 ±0.62xl0(^8)[B(_c2)(T)](^1.72±1.3)b(^1/2)(l-b)(^2). The difference in the values of n between strain scaling and temperature scaling shows that n only parameterises the change in J(_c) with change in strain or temperature. The effect of strain on J(_c) has been measured on five short sections of an Ag-sheathed BSCCO(2223) tape at 4.2K and in magnetic fields up to 12T. J(_c) degradation starts to occur between 0.18%-0.25% strain. The appearance of secondary peaks in the critical current distribution is attributed to inter-grain J(_c) and infra-grain J(_c). J(_c) measurements have been made on bulk PbMo(_6)S(_8)(PMS) samples. J(_c) increased by a factor of «7 when the sample was hot isostatically pressed(HIP). Measurements have also been made on series of HIP'ed gadolinium(Gd) doped Pbi(_1-x)Gd(_x)Mo(_6)S(_8) samples. The highest T(_c) value is 14.55K when x=0.1. The highest J(_c) is when x=0.2. The irreversibility field B(_irr)(0) from J(_c) measurements has been calculated to be 53.9T, 45.5T, 34.IT and 33.5T for the x=0, 0.1,0.2 and 0.3 samples, respectively
The Design and Development of an Automatic Guiding System for a Tractor
Mechanization and Automation are very fashionable words in present day Agriculture. Both imply a reduction in the amount of human effort necessary to achieve certain ends, and to accept the need for either of them is to assume that it will lead to some financial gain. Automation as applied to Agriculture is to improve many limited factors which affect the final yield of any agricultural crop. One of these factors, the mechanical operation, requires considerable care and attention to more nearly insure maximum yield and high quality. Numerous methods have been adopted through research and development to minimize field losses of a crop and to improve the quality of product with the use of more adaptable and accurate machines. As such, the objective of this study was: 1. To design, develop, and construct an automatic steering device which would enable a tractor to guide itself down the crop row accurately. The system was to be designed in a manner that would make it possible for the tractor to be used for a variety of crops with little or no change in the automatic steering components. 2. To design a system which could be justified economically where labor is scarce and expensive or unskilled, or where the tractors are operated in hazardous conditions
INCIDENCE OF STAPHYLOCOCCUS AUREUS AND COAGULASE POSITIVE STAPH. AUREUS IN RAW MILK IN KOSOVO
The presence study was conducted to determine the presence of Staphylococcus aureus and coagulase positive S. aureus in raw milk collected from different localities in Kosovo. We have examined 55 samples of raw milk cow taken from cattle farms. The Staphylococcus aureus was isolated in Baird Parker agar where typical and atypical colonies were selected and submitted to coagulase and complementary tests. Out of 55 samples of raw milk studied, 17 showed contamination by Staphylococcus aureus corresponding to 31% of the samples being contaminated. Out of 17 samples showed contamination by S. aureus, 5 of them were coagulase positive S. aureus or 29 % (or 9 % of total samples analyzed). Results clearly suggested a possibility of potential public health threat of Staphylococcus aureus resulting from contamination of milk with pathogenic bacteria is mainly due to unhygienic processing, handling and unhygienic environment
Pengaruh Faktor-faktor Produksi terhadap Produksi USAha Industri Kerajinan Tangan Mutiara Ratu di Kota Palu
Penelitian ini bertujuan untuk mengetahui pengaruh faktor-faktor produksi terhadap produksi USAha industri kerajinan tangan Mutiara Ratu di Kota Palu. Penelitian dilaksanakan di Jl. Makagili, Kelurahan Pantoloan, Kecamatan Tawaeli, Kota Palu. Penelitian ini menggunakan data primer dan data sekunder. Alat analisis yang dipakai adalah fungsi produksi Cobb-Douglas yang perhitungannya menggunakan persamaan regresi linier berganda. Hasil penelitian menunjukkan bahwa seluruh variabel secara simultan berpengaruh signifikan terhadap produksi kerajinan tangan pada USAha industri Mutiara Ratu di Kota Palu. Variabel modal (X1), tenaga kerja (X2) dan bahan baku (X3) berpengaruh nyata/signifikan terhadap produksi kerajinan tangan, sedangkan variabel peralatan (X4) berpengaruh tidak nyata/non signifikan terhadap produksi kerajinan tangan
Simultaneous effect of temperature and site altitude on generators output
The effect of environmental conditions of the site must be considered as one of the most important aspects of designing generators as well as theoretic calculations and considerations. The real amounts which are measurable on the sites under real conditions are usually different from the rated values of the generators. In this paper we exerted this consideration and a typical model of generator produced by Ansaldo Energia was selected and studied. The material of the generator application guide and the measured values on site are used to get related curves of the environmental conditions effect, such as the effect the site altitude and the ambient temperature, on generator rated values. The practical and measured values of this model of generator which has been installed on Parand and Oroumieh sites in Iran are used for verification of the results of this paper and the related error is calculated. We claim this technical research has not been done before with such mentioned considerations and necessities. This paper gives the necessary instruction to evaluate the applicability and the generator characteristic data at different operating conditions (load, voltage, power factor, site and cooling condition). This study enables the designer to evaluate the generator behavior under the customer requirements and environmental conditions as well as to prepare the necessary proposed documentation for the client. © 2011 Praise Worthy Prize S.r.l. - All rights reserved
Semi-Empirical Model to Estimate the Solubility of CO2 NaCl Brine in Conditions Representative of CO2 Sequestration
Peer reviewedPublisher PD
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