949 research outputs found

    Meningkatkan Hasil Belajar Siswa Melalui Penerapan Metode Diskusi Kelompok Dalam Pembelajaran Pendidikan Kewarganegaraan Di Kelas III SD Inpres Bualemo 3

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    Permasalahan dalam penelitian ini adalah Apakah hasil belajar PKn siswa kelas III SD Inpres Bualemo 3 dapat meningkat melalui Penerapan Metode Diskusi Kelompok. Metode penelitian yang digunakan adalah metode Penelitian Tindakan Kelas (PTK) yang dilaksanakan di SD Inpres Bualemo 3 tahun pelajaran 2013/2014 pada siswa Kelas III yang berjumlah 21 orang siswa. Hasil Penelitian menunjukkan bahwa terjadi peningkatan hasil belajar mata pelajaran PKn melalui Penerapan Metode Diskusi Kelompok kelas III SD Inpres Bualemo 3. Peningkatan dalam penelitian ini cukup berarti yakni dari rata-rata hasil belajar siklus I sebesar 67,38 naik menjadi 70,71 pada siklus II atau naik sebesar 3,33%. Akan halnya pada ketuntasan hasil belajar secara klasikal dari 66,67 % pada siklus I meningkat menjadi 90,48 % pada siklus II atau mengalami peningkatan sebesar 23,81%.. Artinya bahwa hasil yang diperoleh tersebut telah memenuhi kriteria ketuntasan belajar siswa secara klasikal sebagaimana yang telah ditetapkan pada indikator penelitian ini yaitu sebesar 80% dan ketuntasan hasil belajar individu sebesar 70

    Induksi Mutasi Radiasi Sinar Gammapada Beberapa Varietas Kedelai Hitam (Glycine Max (L.) Merrill)

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    This study aimed to get the genetic diversity some varieties of black soybeans due to the influence of gamma rays. Research was conducted at Balai Benih Induk Tanaman Palawija, Deli Serdang (+ 25 m above sea level) from April - August 2012 used randomized block design. The first factor is the radiation doses with 4 level are 0, 10, 15, and 20 krad and the second factor is three varieties are Detam-1, Detam-2, and Cikuray. The treatment was repeated three times. The results showed that radiation significant of percentage of germination, plant height at 4-5 week after plant and harvest time. Varieties significant of plant height at 2-5 week after plant, flowering time, harvest time, number of empty pods, seed weight per sample, weight of 100 seeds, but not significant of the number of productive branch and number of pod contain. Whereas, interaction between radiation and varieties only significant of plant height at 4 week after plant. Coefficient variability genotipe values ranged between 0,39 – 17,85 and coefficient variability fenotipe values ranged between 1,21 – 18,76. Heritability values ​​ranged between 0,10 - 0,96. Research should be continued so know production of varieties which are higher

    Pesticidal plants in Africa: a global vision of new biological control products from local uses

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    Botanical insecticides provide a multitude of chemistries for the development of new pest management products. Despite relatively low rates of expansion in botanically based pesticides, regulatory changes in many parts of the world are driving a renaissance for the development of new natural pest control products that are safer for human health and the environment. Africa is arguably the continent with the most to gain from developing natural plant-based pesticides. Hundreds of indigenous and exotic species with pesticidal properties have been reported from Africa through various farmer surveys and subsequent research, many of which have been confirmed to be active against a range of arthropod pests. Onfarm use of pesticidal plants, particularly among resource-poor smallholder farmers, is widespread and familiar to many African farmers. Until recently, the pyrethrum industry was dominated by East African production through small holder farmers, showing that non-food cash crop production of pesticidal plants is a realistic prospect in Africa when appropriate entrepreneurial investment and regulatory frameworks are established. This paper reviews the current status of research and commercialisation of pesticidal plant materials or botanically active substances that are used to control pests in Africa and establishes where major gaps lie and formulates a strategy for taking research forward in this area

    Fumigant Toxicity and Oviposition Deterrency of the Essential Oil from Cardamom, Elettaria cardamomum, Against Three Stored—product Insects

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    Use of insecticides can have disruptive effects on the environment. Replacing the chemical compounds in these insecticides with plant materials, however, can be a safe method with low environmental risk. In the current study, chemical composition and insecticidal activities of the essential oil from cardamom, Elettaria cardamomum L. (Maton) (Zingiberales: Zingiberaceae) on the adults of three stored product pests was investigated. Results indicated that essential oil of E. cardamomum toxic to the bruchid beetle, Callosobruchus maculatus Fabricius (Coleoptera: Bruchidae), the red flour beetle, Tribolium castaneum Herbst (Coleoptera: Tenebrionidae), and the flour moth, Ephestia kuehniella Zeller (Lepidoptera: Pyralidae). Adults of E. kuehniella were more sensitive than the Coleoptera. Also, the highest mortality of these insects was seen after 12 hours. Results of the LT50 tests showed that the lethal time of mortality occurred between 10–20 hours in various test concentrations. Essential oil of E. cardamomum had a good efficacy on oviposition deterrence of C. maculatus females, too. The chemical constituents of the essential oils were analyzed by gas chromatography—mass spectrometry. The major constituents of cardamom were identified as 1,8-cineol, α-terpinyl acetate, terpinene and fenchyl alcohol. These results suggest that essential oil of E. cardamomum is a good choice for control of stored product pests

    Prevalence of female genital mutilation and its effect on women’s health in Bale zone, Ethiopia: a cross-sectional study

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    BACKGROUND: Females’ genital mutilation (FGM) is one of the harmful traditional practices affecting the health of women and children. It has a long-term physiological, sexual and psychological effect on women. It remains still a serious problem for large proportion of women in most sub-Saharan Africa countries including Ethiopia. METHODS: A community based cross sectional study design which is supplemented by qualitative method was conducted in 2014. A total of 634 reproductive age women were involved in the quantitative part of the study. The respondents were drawn from five randomly selected districts of Bale zone. The total sample was allocated proportionally to each district based on the number of reproductive age women it has. Purposive sampling method was used for qualitative study. Then, data were collected using pre-tested and structured questionnaire. The collected data were analyzed by SPSS for windows version 16.0. Multiple logistic regressions were carried out to examine the existence of relationship between FGM and selected determinant factors. Variables significant in the bivariate analysis were then entered into a multiple logistic regression analysis. RESULTS: In this study, 486 (78.5%) of women had undergone some form of FGM with 75% lower and 82% upper confidence interval. To get married, to get social acceptance, to safeguard virginity, to suppress sexual desire and religious recommendations were the main reasons of FGM. The reported immediate complications were excessive bleeding at the time of the procedure, infection, urine retention and swelling of genital organ. Muslim women and women from rural areas were significantly more likely to have undergone the procedure. In addition to these, compared to women 15–20 years old older women were more likely to report themselves having undergone FGM. CONCLUSIONS: Although younger women, those from urban residence and some religions are less likely to have had FGM it is still extremely common in this zone. Deep cultural issues and strongly personally held beliefs which are not simple to predict or quantify are likely to be involved in the perpetuation of FGM. Efforts to eradicate the practice should incorporate a human rights approach rather than rely solely on the damaging health consequences

    The influence of foot geometry on the calcaneal osteotomy angle based on two-dimensional static force analyses

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    Background: Malalignment of the hindfoot can be corrected with a calcaneal osteotomy (CO). A well-selected osteotomy angle in the sagittal plane will reduce the shear force in the osteotomy plane while walking. The purpose was to determine the presence of a relationship between the foot geometry and loading of the calcaneus, which influences the choice of the preferred CO angle. Methods A static free body force analysis was made of the posterior calcaneal fragment in the second half of the stance phase to determine the main loads: the plantar apeunorosis (PA) and Achilles tendon (AT). The third load is on the osteotomy surface which should be oriented such that the shear component of the force is zero. The force direction of the PA and AT was measured on 58 MRIs of the foot, and the force ratio between both structures was taken from the literature. In addition the PA-to-AT force ratio was estimated for different foot geometries to identify the relationship. Results: Based on the wish to minimize the shear force during walking, a mean CO angle was determined to be 33º (SD8) relative to the foot sole. In pes planus foot geometry, the angle should be higher than the mean. In pes cavus foot geometry, the angle should be smaller. Conclusion: Foot geometry, in particular the relative foot heights is a determinant for the individual angle in performing the sliding calcaneal osteotomy. It is recommended to take into account the foot geometry (arch) when deciding on the CO angle for hindfoot correction.Biomechanical EngineeringMechanical, Maritime and Materials Engineerin

    第774回 千葉医学会例会・第二内科例会 64.

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    The apolipoprotein E (APOE) gene is the most highly associated susceptibility locus for late onset Alzheimer's Disease (AD), and augmenting the beneficial physiological functions of apoE is a proposed therapeutic strategy. In a high throughput phenotypic screen for small molecules that enhance apoE secretion from human CCF-STTG1 astrocytoma cells, we show the chrysanthemic ester 82879 robustly increases expressed apoE up to 9.4-fold and secreted apoE up to 6-fold and is associated with increased total cholesterol in conditioned media. Compound 82879 is unique as structural analogues, including pyrethroid esters, show no effect on apoE expression or secretion. 82879 also stimulates liver x receptor (LXR) target genes including ATP binding cassette A1 (ABCA1), LXRα and inducible degrader of low density lipoprotein receptor (IDOL) at both mRNA and protein levels. In particular, the lipid transporter ABCA1 was increased by up to 10.6-fold upon 82879 treatment. The findings from CCF-STTG1 cells were confirmed in primary human astrocytes from three donors, where increased apoE and ABCA1 was observed along with elevated secretion of high-density lipoprotein (HDL)-like apoE particles. Nuclear receptor transactivation assays revealed modest direct LXR agonism by compound 82879, yet 10 μM of 82879 significantly upregulated apoE mRNA in mouse embryonic fibroblasts (MEFs) depleted of both LXRα and LXRβ, demonstrating that 82879 can also induce apoE expression independent of LXR transactivation. By contrast, deletion of LXRs in MEFs completely blocked mRNA changes in ABCA1 even at 10 μM of 82879, indicating the ability of 82879 to stimulate ABCA1 expression is entirely dependent on LXR transactivation. Taken together, compound 82879 is a novel chrysanthemic ester capable of modulating apoE secretion as well as apoE-associated lipid metabolic pathways in astrocytes, which is structurally and mechanistically distinct from known LXR agonists
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