2,175 research outputs found

    Analisis Faktor-Faktor yang Mempengaruhi Produksi Sektor Pertanian di Propinsi Aceh

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    . This study aims to determine the factors that affect the production of the agricultural sector in the Aceh province. Furthermore, these factors can determine the level of production growth in the agricultural sector in the GDP of Aceh can be analyzed properly. The data used in this research is secondary data are time series from 1985 to 2013. The analysis model used is multiple linear regression model (multiple regression) were estimated by Ordinary Least Square method (OLS). The results showed that the variable labor, Domestic Investment (DCI), and the land area and a significant positive effect on the production of the agricultural sector in Aceh province. Based on these results, it is suggested to the government in order to maintain the stability of the economy in the Aceh province to implement a policy that is relevant. Thus, factors that affect for agricultural production growth in GDP at Aceh province could be optimized

    Relational properties of weakly orthogonal and orthogonal spherical harmonics in cubed sphere

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    Numerical computations on the sphere in solving problems defined on the sphere suffer from many difficulties near the poles when using spherical polar coordinate system for the spherical surface. For example, in the computations of global weather prediction models, concentrated grid points near the poles increase the amount of computations in the pole region where quantities of interest are of less important than in other parts of the globe. Such problems are collectively called as the 'pole problems'. Avoiding pole problems have attracted some researches in the recent past. One of the recent development in this direction is to define grid meshes on the sphere which do not contain polar concentrated points. Among these the 'cubed sphere' defined from the surface of a unit cube has been used by some authors for approximating weather prediction models by finite difference and finite element methods. In a recent paper, one of the present authors has constructed weakly orthogonal spherical harmonics in a non-polar spherical co-ordinate system based on the cube sphere concept. This can be used for approximating functions on the sphere by spectral methods without the pole problems. In this work, we establish some Lin ear and recurrence relations between these two sets of spherical harmonics. We also exploit linear relations between harmonic components defined in the six faces of the cubed sphere

    Structural, elastic, and electronic properties of newly discovered Li2PtSi3 superconductor: Effect of transition metals

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    First-principles calculations within the density functional theory (DFT) with GGA-PBE exchange-correlation scheme have been employed to predict the structural, the elastic and the electronic properties of newly discovered lithium silicide superconductor, Li2PtSi3, for the first time. All the theoretical results are compared with those calculated recently for isostructural Li2IrSi3. The present study sheds light on the effect of replacement of transition metal element Ir with Pt on different mechanical, electronic, and superconducting properties. The effect of spin-orbit coupling on electronic band structure was found to be insignificant for Li2PtSi3. The difference in superconducting transition temperatures of Li2PtSi3 and Li2IrSi3 arises primarily due to the difference in electronic energy density of states at the Fermi level. Somewhat reduced Debye temperature in Li2PtSi3 plays a minor role. We have discussed the implications of the theoretical results in details in this study.Comment: Submitted for publicatio

    Characterization of pathogenic mutations in 21-hydroxylase gene of Pakistani patients with congenital adrenal hyperplasia and their family members--a preliminary report

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    Objective: To characterize specific mutations within the 21-hydroxylase gene (CYP21-B) using ARMS-PCR assay in patients with congenital adrenal hyperplasia (CAH) and to compare it with that reported in other populations. Subjects and Methods: Five families, having an index case with CAH diagnosed on the basis of clinical and biochemical findings volunteered to give blood samples for analysis. A strategy, based on ARMS-PCR (Amplified Refractory Mutation System) was employed for the detection of mutations in 21-hydroxylase gene. The products of ARMS-PCR were resolved on agarose gels and the PCR products were visualized over ultra violet illumination. Results: Twenty-six specimens were analyzed for common point mutations in the 21-hydroxlase genes at the nucleotide positions 659, 1004 and 1688. Seven samples belonged to index cases with CAH. Of these 7, the assigned sex was male in 5 and female in 2 cases. However, genotypic sex was 3 males and 4 females. The mean age was 8 months in 5 cases while the median 17-OH Progesterone levels was 273.2 ng/ml. Vomiting, precocious puberty and ambiguous genitalia were the presenting features in 2, 1 and 4 cases respectively. Analysis for mutation at 659, 100 and 1688 was performed on 7 index cases and the family members of 5 index cases. The mutation analysis for the family members of index case 6 and 7 was not performed due to non-availability of their blood specimens. Index case No. 1, 4 and 7 showed homozygosity for splice mutations at nucleotide position 659, intron 2 with a sequence change of A to G, while the index case No. 2 and 6 showed heterozygosity for the same mutation. No mutation was found at 659, 1004 or 1688 in index case No. 3 and 4 at the analyzed nucleotide position. Nineteen family members of Case Nos. 1-5 were also analyzed for the same mutations. (Family No. 1, 2, 3, 4 and 5 included 3, 2, 7, 4 and 5 members respectively). These included 8 males and 11 females. All were asymptomatic. Both the parents of index case 1 and 4 were heterozygous at 659 while the father of index case No. 2 was heterozygous at 659 and mother was normal. Conculsion: Our results demonstrated the A to G transition at nucleotide 659 causing aberrant splicing, reported for some other populations as the most commonly identified point mutations. All cases were appropriately assigned to paternal or maternal chromosomes

    Hasil Belajar Keterampilan Proses Fisika Siswa dengan Joyful Learning di SMP Negeri 3 XIII Koto Kampar

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    This study aims to determine learning outcomes and differences in learning outcomes of students' skills of the physical processes in SMP Negeri 3 XIII Koto Kampar using joyful learning. This study is a pre experiment with comparison group design intact. Instruments used in the collection of data is the test result of learning science process skills of physics. Data collection research conducted at the end of the learning process. Physics student learning outcome data were analyzed through descriptive analysis and inferential analysis. Descriptive analysis showed that the increase in learning outcomes of students after learning process skills using joyful learning there was an increase of 9.6 in the low category. Inferential analysis of data obtained from the normal distribution through the calculation using SPSS 21 is obtained t count = 2,526> t table = 2.023 so that there are significant differences in the results of the physics students learn skills through joyful learning

    Efikasi Dua Jenis Ekstrak Tumbuhan Dan Kombonasi Keduanyaterhadap Mortalitas Hama Ulat Bawang Merah (Spodoptera Exigua Hubn) (Lepidoptera: Noctuidae)

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    The aims of this experiment were to obtain the effective and efficient concentrations of two kinds of plant extracts applied in single or in combination on the mortality of Spodoptera exiqua larva and to determine the LC50 value. This experiment used completely randomized design (CRD) with 5 treatments, namely A (K1 = 0.25%), B (K2 = 0.50%), C (K3 = 0.75%), D (K4 = 1.00%) and E (K5 = 1.25%) and each treatment was replicated 3 times. Larva used was instar 3. Results of this experiment showed that in a single test of Sidondo plant (Vitex negundo L.) extract, the concentration of 1% was effective with the LC50 value at 0.10% and mortality reached 83.33%; and Patah Tulang (Euphorbia tirucalli) extract, the concentration of 1% was also effective with the LC50 value at 0.08% and mortality was upto 83.33%. Combination of Sidondo and Patah Tulang plant extracts with 0.50% each was an effective concentration with LC50 value at 0.09% and mortality of Spodoptera exigua larvae at 48 hours after application reached 83.33%
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