3,957 research outputs found

    Measuring the muon's anomalous magnetic moment to 0.14 ppm

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    The anomalous magnetic moment (g-2) of the muon was measured with a precision of 0.54 ppm in Experiment 821 at Brookhaven National Laboratory. A difference of 3.2 standard deviations between this experimental value and the prediction of the Standard Model has persisted since 2004; in spite of considerable experimental and theoretical effort, there is no consistent explanation for this difference. This comparison hints at physics beyond the Standard Model, but it also imposes strong constraints on those possibilities, which include supersymmetry and extra dimensions. The collaboration is preparing to relocate the experiment to Fermilab to continue towards a proposed precision of 0.14 ppm. This will require 20 times more recorded decays than in the previous measurement, with corresponding improvements in the systematic uncertainties. We describe the theoretical developments and the experimental upgrades that provide a compelling motivation for the new measurement.Comment: 5 pages, 1 figure, presented at International Nuclear Physics Conference 2010 (INPC 2010

    Komunikasi Instruksional Pengasuh dalam Proses Belajara Mengajar pada Program Tahfidz Qur'an di Pondok Pesantren Umar Bin Khatab Pekanbaru

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    Qur'an tahfidz program in Umar Bin Khatab School is superior program of Salafiyah Ula grade of student that spends 75% hours from all study schedule in a week. It is not simple for teaching material to be memorized for children, especially in elementary grade. This condition causes teacher to use instructional communication method for teaching student. The purpose of this research should be to know adviser capability in this school, to know what kind of adviser's method and also to know communication obstacle in learning process.The research uses qualitative research method that is completed by descriptive analysis. All informant is adviser as if teacher, and also all choosing student that was decided by purposive method of sampling. Data Collection can be found by observation, interview and documentation. Data Validation comes from participative extension amd triangulation.The result of this research shows communicator credibility has been good that is viewed by teacher's memorizing skill of Qur'an and teaching Qur'an tahfidz to student and their trust to the teacher. There are many various of instructional communication methods such as givin demonstration, practising with friends and giving some tasks. Beside that, there are two obstacles should be faced, technical and psychological obstacle. Technical obstacle can be found in handling class condition of noisy because of unbalancing the number of both teacher and student. It causes teacher getting out of monitoring. Then, psychological obstacle can be seen from different capability of memorizing between students and also student often forgets half of their memories instead

    The Effect of Cymbopogon Citratus Oil Aromatherapy in Preventing Postpartum Blues in Primiparous Mothers in Sukoharjo Hospital, Central Java

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    Background: Postpartum blues is one of the psychological complications in postpartum mothers characterized by maternal unwillingness to take care of her infant. Postpartum blues have been experienced by many primipara mothers. Studies have shown that oil aromatherapy worked for relaxation or anti-depression. This study aimed to determine the effect of Cymbopogoncitrates oil aromatherapy in preventing postpartum blues in primipara mother. Subjects and Method: This was a quasi experiment with pre and post test design conducted at Sukoharjo Hospital, Central Java. A sample of 15 primipara postpartum mothers was selected for this study. The dependent variable was postpartum blues. The independent variable was Cymbopogon citrate oil aromatherapy. The postpartum blues was measured by Edinburg Postnatal Depression Scale (EPDS). The other variables were collected by questionnaire. The data were tested by Paired t-test. Results: After intervention, the level of stress in postpartum mothers (mean= 8.67; SD= 2.12) was lower than before intervention (mean= 9.73; SD= 3.03) and it was statistically significant (p= 0.011). Conclusion: Cymbopogon citratus oil aromatherapy can reduce postpartum blues in postpartum mothers. Keywords: stress, postpartum blues, Cymbopogon citrates, aromatherap

    HUBUNGAN PERTAMBAHAN BERAT BADAN IBU SELAMA KEHAMILAN DENGAN BERAT LAHIR BAYI DI WILAYAH KERJA PUSKESMAS ONDONG

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    Pertumbuhan dan perkembangan seorang bayi serta ketahanan hidup dari bayi dapat dilihat dari berat badan bayi pada saat lahir. Tiga kategori berat lahir bayi adalah 4000gram disebut sebagai bayi besar. Menganalisa pertambahan berat badan ibu selama kehamilan terhadap berat lahir bayi di wilayah Kerja Puskesmas Ondong. Jenis penelitian ini bersifat observasional analitik dengan rancangan pendekatan cross-sectional (potong lintang). Populasi dalam penelitian ini adalah semua ibu hamil yang memeriksakan diri dan melahirkan di Puskesmas Ondong pada bulan Januari 2015 sampai Agustus 2016 yaitu sebanyak 169 subjek. Subjek dalam penelitian ini menggunakan purposive sampling. Dengan ini banyak pertimbangan-pertimbangan untuk kepentingan penelitian, pertimbangan yang dimaksud yaitu pertimbangan keterbatasan waktu, keterbatasan tenaga, dan jauhnya lokasi penelitian. Maka besar subjek ditetapkan dengan menggunakan rumus Slovin maka hasil yang didapat dibulatkan menjadi 119 subjek, tetapi karena dibatasi oleh kriteria inklusi dan kriteria eksklusi maka jumlah subjek menjadi 100. Pada uji ini nilai Spearman’s rho r sebesar 0,245 dengan sig. (2-tailed) 0,014 atau lebih kecil dari nilai α= 0,05. Hasil uji dengan nilai ρ value (0,014) kurang dari nilai α (0,05), artinya terdapat hubungan antara pertambahan berat badan ibu selama kehamilan dengan berat lahir bayi di wilayah kerja Puskesmas Ondong.Kata kunci:Berat Badan Ibu, Berat Lahir BayiABSTRACTThe growth and development of a baby and the survival of the baby can be seen from the baby's body weight at birth. Three categories of infant birth weight are 4000gram is called a big baby. To analyze maternal weight gain during pregnancy for the baby's birth weight in the Ondong Community Health Center. This type of research is observational analytic with a cross-sectional approach. The population in this study were all pregnant women who examined themselves and gave birth at the Ondong Health Center from January 2015 to August 2016, which were 169 subjects. Subjects in this study using purposive sampling. With this many considerations for the sake of research, the consideration in question is the consideration of time constraints, limited personnel, and the location of the study. Then the subject size was determined by using the Slovin formula so the results obtained were rounded to 119 subjects, but because it was limited by the inclusion criteria and exclusion criteria, the number of subjects became 100. In this test the value of Spearman's rho r is 0.245 with sig. (2-tailed) 0.014 or less than the value of α = 0.05. The test results with a value of ρ value (0.014) is less than the value of α (0.05), meaning that there is a relationship between maternal weight gain during pregnancy and the baby's birth weight in the work area of Ondong Health Center.Keywords: maternal weight gain, baby’s birth weigh

    Strategi Pengembangan Agribisnis Kopi Mandailing (Coffea Arabica) Studi Kasus : Desa Simpang Banyak Julu, Kecamatan Ulu Pungkut, Kabupaten Mandailing Natal

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    Kopi Mandailing merupakan salah satu Kopi Arabika spesialti dari Provinsi Sumatera Utara. Permintaan dan harga jual ekspor cukup tinggi namun belum dapat dimanfaatkan oleh produsen di Kabupaten Mandailing Natal. Penelitian ini dilakukan untuk mengidentifikasi faktor-faktor internal dan eksternal yang mempengaruhi pengembangan agribisnis Kopi Mandailing di Desa Simpang Banyak Julu, Kecamatan Ulu Pungkut, Kabupaten Mandailing Natal. Selanjutnya dari identifikasi tersebut akan disusun strategi pengembangan agribisnis Kopi Mandailing. Data diperoleh dari 20 petani Kopi Mandailing yang ditentukan secara sensus. Data yang digunakan adalah data primer dan data sekunder. Metode analisis data menggunakan analisis kuantitatif matriks SWOT. Dari penelitian yang dilakukan diketahui bahwa faktor-faktor internal yang mempengaruhi adalah: 1)Kondisi fisik dan mutu kopi Mandailing, 2)Produksi kopi Mandailing, 3)Pengalaman petani dalam USAha tani kopi Mandailing, 4)Penguasaan petani terhadap teknik budidaya kopi, 5)Luas lahan dan 6)Penggunaan input. Faktor-faktor eksternal yang mempengaruhi pengembangan kopi Mandailing yaitu: 1)Permintaan kopi Mandailing, 2)Lembaga pendukung permodalan, 3)Tenaga pendamping, 4)Sarana pendukung dan infrastruktur, 5)Tenaga kerja yang digunakan, 6)Posisi tawar, 7)Akses pasar, 8)Harga input rata-rata, 9)Harga jual kopi Mandailing di tingkat petani dan 10)Bantuan pemerintah. Dalam faktor internal kekuatan lebih banyak daripada kelemahan dengan selisih 1,54 sementara pada faktor eksternal peluang lebih banyak daripada ancaman dengan selisih 0,47. Dengan demikian diperoleh strategi agresif pada kuadran I. Penjelasan dari strategi tersebut dapat dijabarkan dalam empat kombinasi alternatif strategis, yaitu strategi SO, strategi ST, strategi WO dan strategi WT

    Survival Demographics of Montezuma Quail in Southeast Arizona

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    Many facets of Montezuma quail (Cyrtonyx montezumae mearnsi) population dynamics, such as survival and causes of mortality, are unknown because of limited or lack of mark–recapture studies on wild populations of this species. Much of what is known about this species comes from casual observations in the field or from dog-assisted flush-count surveys. Further insight into rate and causes of mortality for this species is necessary to ensure proper conservation measures. We evaluated survival and causes of mortality of Montezuma quail in southeastern Arizona from winter 2007 to spring 2010. Survival was determined from quail captured, radiotagged, and monitored among 3 separate study sites. In 2 of these sites hunting was permitted; and in 1 site (the control) hunting was not permitted. Estimation of accurate mortality rates in hunted sites was complicated by large quantities of censored data, some of which was attributable to lack of reported mortalities from hunting. Mortality in the control site may have been compounded by a combination of stochastic events (i.e., wildfire, freezing) occurring during the study. Mortality rate for all sites were higher than any estimates reported or hypothesized in known scientific literature. The estimated rate of survival, combined among the 3 sites, was 21.9% from autumn 2008 to autumn 2009

    Ranges and Movements of Montezuma Quail in Southeast Arizona

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    Historical assumptions about Montezuma quail movements and home ranges at the population level are limited due to the lack of markrecapture studies on this species from which solid conclusions can be derived. Such information is crucial for estimating population sizes, densities, and rate of emigration and immigration throughout the landscape. Our study examined home range size of 29 Montezuma quail and movements of 65 quail in southeast Arizona from 2008–2010. We used radio telemetry to follow radio-tagged birds in 3 study sites that varied in vegetation composition and topography. Mean home range size (MCP) was about was similar (51 ha) to the largest use area (50 ha) described in the literature for this species. The largest MCP home range estimate (206.7 ha) was far larger than what has been reported in the literature. Within a season, the largest mean maximum distance moved between 2 locations was 1,128.4 ± 619.5 m and the largest maximum linear distance between 2 locations for an individual was 2,375.5 m. Results from our research should help to address knowledge gaps about Montezuma quail home ranges and movements and provide a baseline to assist management of this species in the future
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