77 research outputs found

    Gerakan Sedekah Ilmu Buton Raya Educare: Penerapan Metode Multiple Intellegences Bagi Anak-anak Desa Kepulauan Buton

    Get PDF
    Tujuan pengabdian masyarakat melalui gerakan Sedekah Ilmu: Penerapan Metode Multiple Intellegences dalam Pembelajaran Bagi Anak-Anak Desa Di Kepulauan Buton ini adalah upaya mengembangkan system belajar dengan pendekatan yang lebih mengajak anak-anak untuk terlibat aktif, sekaligus melatih mahasiswa untuk menerapkan pengalaman mereka dan menyerap inspirasi lingkungan sekitar. Di sisi lain, metode pembelajaran diharapkan mampu membangun relasi sosial antara anak-anak desa karena didesain dan diterapkan secara multi metode.  Metode yang diterapkan dalam Sedekah Ilmu ini adalah Pendidikan Masyarakat khususnya kepada anak-anak melalui pendekatan Multiple Intelligences (MI), yang didesain dalam metode pembelajaran, materi pembelajaran, ice breaking, dan desain pembelajaran kelompok.  Hasil yang diperoleh pada proses ini meliputi beberapa hal, diantaranya; a) Pembelajaran menjadi lebih adaptif terhadap potensi anak; b) Sekalipun dalam permainan namun anak-anak tetap dapat sambil belajar; c) Membangun Ikatan Kelompok Sosial Anak sejak dini melalui pembelajaran yang berbasis kelompok; d) Membangun kesadaran kepada anak-anak tentang potensi desa mereka melalui sub-pembelajaran; e) Melatih anak-anak menuliskan cita-citanya dan berani untuk mengungkapkannya; f) Memberi inspirasi sekaligus pengalaman terhadap para pengajarnya dalam mengelola kelompok kelas anak-ana

    Using tracer experiments to determine deep saline aquifers caprocks transport characteristics for carbon dioxide storage

    Get PDF
    It is shown how a simple gas tracer technique can contribute to the determination of transport characteristics of tight rock formations. Main obtained parameters are intrinsic permeability and the Klinkenberg coefficient; permeability as low as 10-21 m2 is easily attainable. Some information is also gained on diffusion characteristics and porosity. An example of application is given using caprocks from a deep saline aquifer in the Paris basin

    External validation of a prediction model for estimating fat mass in children and adolescents in 19 countries: individual participant data meta-analysis

    Get PDF
    Objective To evaluate the performance of a UK based prediction model for estimating fat-free mass (and indirectly fat mass) in children and adolescents in non-UK settings. Design Individual participant data meta-analysis. Setting 19 countries. Participants 5693 children and adolescents (49.7% boys) aged 4 to 15 years with complete data on the predictors included in the UK based model (weight, height, age, sex, and ethnicity) and on the independently assessed outcome measure (fat-free mass determined by deuterium dilution assessment). Main outcome measures The outcome of the UK based prediction model was natural log transformed fat-free mass (lnFFM). Predictive performance statistics of R2, calibration slope, calibration-in-the-large, and root mean square error were assessed in each of the 19 countries and then pooled through random effects meta-analysis. Calibration plots were also derived for each country, including flexible calibration curves. Results The model showed good predictive ability in non-UK populations of children and adolescents, providing R2 values of >75% in all countries and >90% in 11 of the 19 countries, and with good calibration (ie, agreement) of observed and predicted values. Root mean square error values (on fat-free mass scale) were <4 kg in 17 of the 19 settings. Pooled values (95% confidence intervals) of R2, calibration slope, and calibration-in-the-large were 88.7% (85.9% to 91.4%), 0.98 (0.97 to 1.00), and 0.01 (−0.02 to 0.04), respectively. Heterogeneity was evident in the R2 and calibration-in-the-large values across settings, but not in the calibration slope. Model performance did not vary markedly between boys and girls, age, ethnicity, and national income groups. To further improve the accuracy of the predictions, the model equation was recalibrated for the intercept in each setting so that country specific equations are available for future use. Conclusion The UK based prediction model, which is based on readily available measures, provides predictions of childhood fat-free mass, and hence fat mass, in a range of non-UK settings that explain a large proportion of the variability in observed fat-free mass, and exhibit good calibration performance, especially after recalibration of the intercept for each population. The model demonstrates good generalisability in both low-middle income and high income populations of healthy children and adolescents aged 4-15 years

    Notes for genera: basal clades of Fungi (including Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Calcarisporiellomycota, Caulochytriomycota, Chytridiomycota, Entomophthoromycota, Glomeromycota, Kickxellomycota, Monoblepharomycota, Mortierellomycota, Mucoromycota, Neocallimastigomycota, Olpidiomycota, Rozellomycota and Zoopagomycota)

    Get PDF
    Compared to the higher fungi (Dikarya), taxonomic and evolutionary studies on the basal clades of fungi are fewer in number. Thus, the generic boundaries and higher ranks in the basal clades of fungi are poorly known. Recent DNA based taxonomic studies have provided reliable and accurate information. It is therefore necessary to compile all available information since basal clades genera lack updated checklists or outlines. Recently, Tedersoo et al. (MycoKeys 13:1--20, 2016) accepted Aphelidiomycota and Rozellomycota in Fungal clade. Thus, we regard both these phyla as members in Kingdom Fungi. We accept 16 phyla in basal clades viz. Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Calcarisporiellomycota, Caulochytriomycota, Chytridiomycota, Entomophthoromycota, Glomeromycota, Kickxellomycota, Monoblepharomycota, Mortierellomycota, Mucoromycota, Neocallimastigomycota, Olpidiomycota, Rozellomycota and Zoopagomycota. Thus, 611 genera in 153 families, 43 orders and 18 classes are provided with details of classification, synonyms, life modes, distribution, recent literature and genomic data. Moreover, Catenariaceae Couch is proposed to be conserved, Cladochytriales Mozl.-Standr. is emended and the family Nephridiophagaceae is introduced

    Hydroxyapatite coatings grown by pulsed laser deposition with a beam of 355 nm wavelength

    Get PDF
    Calcium phosphate coatings, obtained at different deposition rates by pulsed laser deposition with a Nd:YAG laser beam of 355-nm wavelength, were studied. The deposition rate was changed from 0.043 to 1.16 /shot by modification of only the ablated area, maintaining the local fluence constant to perform the ablation process in similar local conditions. Characterization of the coatings was performed by scanning electron microscopy, x-ray diffractometry, and infrared, micro-Raman, and x-ray photoelectron spectroscopy. The coatings showed a compact surface morphology formed by glassy gains with some droplets on them. Only hydroxyapatite (HA) and alpha-tricalcium phosphate (alpha-TCP) peaks were found in the x-ray diffractograms. The relative content of alpha TCP diminished with decreasing deposition rates, and only HA peaks were found for the lowest rate. The origin of alpha TCP is discussed

    Release of clay particles from an unconsolidated clay-sand core experiments and modelling

    No full text
    International audienceRelease of clay particles from an unconsolidated clay-sand core experiments and modellingMarie-Helene Faure, Michel Sardin and Pierre Vitorge.This work identifies the main phenomena that control the peptisation and transport of clay particles in a sand core. Clay can be dispersed into small particles in an aqueous solution of low ionic strength. This property is used to generate clay particles with NaCl concentration varying from 0.5 M to 0.015 M. For this purpose, a chromatographic column is initially packed with a 5 percent clay-sand mixture. The monitored decrease of the NaCl concentration of the feed solution allows the control of transport of the particles without plugging the porous medium. In this conditions, it is shown that, in a column of a given length, the amount of clay particles, released into solution and available to transport, depends only on NaCl concentration. Some clay particles are available to migration when the NaCl concentration of the feed concentration is between 0.16 M and 0.05 M (first domain) or between 0.035 M and 0.019 M (second domain). An empirical function, Pd_d((NaCl)), accounts for this particle generation. Transport is mainly dependent on the hydrodynamic characteristics of the porous medium that vary during the elution, probably due to the particle motion inside the column. A phenomenological modelling is derived from these results, coupling the particle generation term, Pd_d((NaCl)), with an adapted nonequilibrium transport solute model. Similarly to the solute, particles were attributed a characteristic time of mass transfer between mobile and immobile water zones. This is sufficient to take into account the kinetic limitations of particles transport. The values of the parameters are determined by independent experiments. Finally, breakthrough curves of clay particles are predicted when a column of a given length is flushed by a salinity gradient of NaCl in various conditions

    Procédé cyclique d'échange d'ions pour l'élimination sélective du fluor présent en trace dans l'eau de consommation

    No full text
    Les normes sur l'eau potable devenant de plus en plus sévères, il est nécessaire de concevoir des procédés capables de réduire sélectivement la teneur d'une espèce donnée. Un procédé original a été développé pour éliminer sélectivement le fluorure dissous dans l'eau à l'état de trace en présence d'un anion en excès comme par exemple l'hydrogénocarbonate. Ce procédé cyclique d'échange d'ions met en oeuvre deux colonnes. La colonne de séparation, parcourue alternativement par l'eau dans les deux sens, sert à séparer le fluorure des autres anions et à restituer la matrice ionique. Elle n'est jamais régénérée. La seconde colonne permet de stocker transitoirement le fluorure, qui est élue lors de la régénération. Le principe de fonctionnement du procédé est démontré numériquement et expérimentalement sur l'exemple d'une eau reconstituée bicarbonatée, dont les anions majeurs sont le chlorure et le sulfate. Le système évolue rapidement vers un régime permanent caractérisé par l'établissement d'un profil limite stable de concentrations à l'intérieur de la colonne de séparation. Ce régime permanent existe à condition que le volume qui parcourt la colonne de séparation dans les deux sens soit conservé à chaque cycle. Les conditions opératoires de l'exemple présenté permettent l'établissement du régime permanent en 17 cycles de fonctionnement et permet simultanément l'élimination du fluorure et la restitution de la matrice ionique de l'eau. Ce procédé particulièrement adapté au traitement des eaux embouteillées se transpose facilement à l'échelle industrielle et s'applique à toute espèce trace de faible affinité pour les résines échangeuses d'ions

    Removal of arsenate from drinking water with a natural manganese oxide in the presence of competing anions

    No full text
    International audienceThe efficiency of arsenic removal from drinking water in adsorption processes using natural oxides may be influenced by the presence of other adsorbable anions. The present paper focuses on the study of arsenate adsorption by a natural manganese oxide. The objective is to determine which of the anions usually present in drinking water may be adsorbed: hydrogen carbonate, sulfate, chloride, nitrate, phosphate and arsenate. A kinetic batch experiment was conducted with a natural drinking water, leading to a first qualitative selection: nitrate and chloride have little interaction with the adsorbent, sulfate and hydrogen carbonate are adsorbed while phosphate and arsenate are strongly adsorbed. Then column experiments were run with aqueous solutions containing either chloride, sulfate, etc. The previous trends were confirmed and the equilibrium isotherms of the adsorbable anions were built by integration of the breakthrough curves. The isotherms fitted with a Langmuir model showed that the capacities were low (a few µmol.g-1). The affinity order was determined from the isotherm initial slopes: arsenate >> phosphate > hydrogen carbonate ≅ sulfate. Given the strong affinity of the adsorbent for arsenate and the low arsenate concentration in drinking water, the process selectivity for As traces from drinking water is ensured
    corecore