Peningkatan Motivasi Dan Hasil Belajar Siswa SMP Pada Materi Getaran Dan Gelombang Dengan Menggunakan Media Tik Slide Powerpoint Dan Demonstrasi Alat Sederhana (Penelitian Di SMP Negeri 2 Meurah Mulia Kabupaten Aceh Utara)

Penelitian ini dilakukan untuk mempelajari dampak perbedaan motivasi dan hasil belajar siswa pada materi getaran dan gelombang melalui penggunaan media TIK slide powerpoint dan alat peraga sederhana dan selanjutnya juga ingin diketahui tanggapan siswa terhadap penggunaan media TIK slide powerpoint dan alat peraga sederhana. Penelitian ini menggunakan metode eksperimen semu (quasi experiment) dengan rancangan pretes dan postes control group design yang dilaksanakan di kelas VIII salah satu SMP Negeri di Kabupaten Aceh Utara pada tahun pelajaran 2013/2014. Pengambilan sampel berdasarkan teknik random sampling. Data dikumpulkan melalui pretes dan postes untuk mengamati peningkatan hasil belajar pembelajaran. Angket digunakan untuk mengetahui tanggapan siswa terhadap penggunaan media TIK slide powerpoint dan alat sederhana. Analisis data menunjukkan bahwa tidak terdapat perbedaan yang signifikan pada motivasi dan hasil belajar antara kelas media TIK slide powerpoint dan alat sederhana pada siswa SMP. Mayoritas siswa kurang merespon positif terhadap media TIK slide powerpoint dan alat sederhana

Catalytic Hydrodeoxygenation of Fatty Acids for Biodiesel Production

This paper is devoted to the production of second generation biodiesel via catalytic hydrodeoxygenation of fatty acids. Pd/C catalysts with different metal loading were used. The palladium catalysts were characterized using low-temperature nitrogen physisorption and X-ray photoelectron spectroscopy. It was revealed that the most active and selective catalyst was 1%-Pd/C which allowed reaching up 97.5% of selectivity (regarding to n-heptadecane) at 100% conversion of substrate. Moreover, the chosen catalyst is more preferable according to lower metal content that leads the decrease of the process cost. The analysis of the catalysts showed that 1%-Pd/C had the highest specific surface area compared with 5%-Pd/C. Copyright © 2016 BCREC GROUP. All rights reservedReceived: 31st July 2015; Revised: 9th December 2015; Accepted: 30th December 2015How to Cite: Stepacheva, A.A., Sapunov, V.N., Sulman, E.M., Nikoshvili, L.Z., Sulman, M.G., Sidorov, A.I., Demidenko, G.N., Matveeva, V.G. (2016). Catalytic Hydrodeoxygenation of Fatty Acids for Biodiesel Production. Bulletin of Chemical Reaction Engineering & Catalysis, 11 (2): 125-132 (doi:10.9767/bcrec.11.2.538.125-132)Permalink/DOI: http://dx.doi.org/10.9767/bcrec.11.2.538.125-132Article Metrics: (click on the button below to see citations in Scopus)

Impact of Health Care Provider’s Training on Patients’ Communication During Labor at Omdurman Maternity Hospital, Sudan 2011

Background: Comprehensive patient’s health care provider’s (HCP) communication usually increases patients’ participation in their health management on childbirth.Objective: This is a quasi interventional study for assessing impact of health care providers (HCP) training on patient- provider’s communication during childbirth in the labour ward at Omdurman Maternity Hospital during 2011.Material and Methods: A situation analysis was done before training to assess existing practice of providers’ communication skills and patient’s satisfaction. All care providers in labour ward were trained and their practice was assessed before and after training. A ten percent sample of patients delivered in hospital before and after training was used to assess providers’ practice. Results were analyzed using SPSS version 18.Results: Health care providers, included were 225 (120/ 105) and interviewed women were, 4469 (2000/ 2469) before and after training respectively. Before training, patients were informed on onset of labour (76.8%), requested investigations (54.9%), permission for vaginal examination (60.3%) and when given antibiotics (85.1%), which improved significantly after training. No improvement in information on adverse effect of drugs and procedures or taking of an informed consent. Patient’s opinion on health care providers’ behavior after delivery in labour ward, were supportive, friendly and respectful (89.7%) and (94.6%) with improved satisfaction (89.8%) and (95.7%) before and after training respectively.Conclusion: The study showed that training of health care providers on communication skills has effective improvement on HCP knowledge and practice towards communication with patients in many areas during labour with resulting good patient’s satisfaction. However, improvement in communication skills need sustained in-service training.Key words: patients- providers’ communication, satisfaction, Sudan

High atmospheric demand for water can limit forest carbon uptake and transpiration as severely as dry soil

When stressed by low soil water content (SWC) or high vapor pressure deficit (VPD), plants close stomata, reducing transpiration and photosynthesis. However, it has historically been difficult to disentangle the magnitudes of VPD compared to SWC limitations on ecosystem-scale fluxes. We used a 13 year record of eddy covariance measurements from a forest in south central Indiana, USA, to quantify how transpiration and photosynthesis respond to fluctuations in VPD versus SWC. High VPD and low SWC both explained reductions in photosynthesis relative to its long-term mean, as well as reductions in transpiration relative to potential transpiration estimated with the Penman-Monteith equation. Flux responses to typical fluctuations in SWC and VPD had similar magnitudes. Integrated over the year, VPD fluctuations accounted for significant reductions of GPP in both nondrought and drought years. Our results suggest that increasing VPD under climatic warming could reduce forest CO2 uptake regardless of changes in SWC

Stydy of the cobalt containing catalyst synthesized in the medium of supercritical carbon dioxide

The article shows the possibility of using of supercritical carbon dioxide for the synthesis of catalytically active systems. A cobalt-containing catalyst supported on silica was synthesized by supercritical deposition. Physicochemical study of the obtained sample showed that, during the synthesis in the medium of supercritical carbon dioxide, the structure of the support does not change; the particles of the active phase are distributed evenly on the support surface with a thin layer

Petition for Writ of Certiorari, Kosilek v. O\u27Brien

Jennifer Levi, on behalf of Gay & Lesbian Advocates & Defenders, was one of the Authors of the Petition for Writ of Certiorari, filed in the Supreme Court of the United States on behalf of the Petitioner, Michelle Kosilek, in Kosilek v. O\u27Brien. Questions presented to the Court by the Petitioner were 1.) whether appellate courts must parse “ques­tions that present elements both factual and legal” into their factual and legal components, so that all factual findings can be reviewed for clear error, or whether, as the First Circuit ruled, they may review such questions as a whole along a “continuum” of deference, where the degree of deference given to the district court is of “variable exactitude,” and 2.) whether the Eighth Amendment prohibits prison officials from denying necessary medical treatment to a prisoner for non-medical reasons, such as security concerns

Sequence analysis of the VSX1 and SOD1 genes in families with Keratoconus and a review of the literature

AbstractObjectiveKeratoconus (KC) is a non-inflammatory disorder of the cornea in which the cornea becomes thin and conical, inducing myopia and irregular astigmatism and resulting in mild to marked impairment of vision. The present study was designed to screen two candidate KC genes to identify pathogenic sequence variants responsible for KC in Saudi families.MethodsPeripheral blood samples from members of five Saudi families with KC from the Northern region were collected. Genomic DNA was isolated, and bidirectional sequencing was performed of all coding exons of VSX1 and SOD1 genes using Sanger sequencing.ResultsAll five of the KC families showed a pattern of autosomal recessive inheritance. Phenotyping of these families was performed by a senior ophthalmologist. Sequence analysis of the VSX1 and SOD1 genes failed to reveal any pathogenic sequence variant that could account for KC in the affected individuals.ConclusionOur failure to detect sequence variants in two of the known KC associated genes triggers an interest in other known KC candidate genes, including miR-184, DOCK9, IL1RN and SLC4A11. Future genotyping with dense SNP arrays followed by exome sequencing in these families will be a useful approach to identify the gene(s) underlying KC in this Saudi cohort, which may be different from those reported elsewhere

The full catalytic processing of biomass components

In this work, experimental studies aimed at the study of the hydrogenolysis of components of plant biomass with the production of valuable chemical substances have been conducted. Research aimed at the finding of the effective catalytic system allows obtaining a high degree of conversion of the substrate with high selectivity in the processing of all components of the biomass. On the basis of experimental data, it can be concluded that 3% Ru/MN270 catalyst is active in the hydrogenolysis of lignin, cellulose and hemicellulose, and it can be used in a complex processing of biomass. The catalytic system is also stable — the five-time use in the reaction of hydrogenolysis did not lead to the change of activity

Land Use and Land Cover Affect the Depth Distribution of Soil Carbon: Insights From a Large Database of Soil Profiles

Soils contain a large and dynamic fraction of global terrestrial carbon stocks. The distribution of soil carbon (SC) with depth varies among ecosystems and land uses and is an important factor in calculating SC stocks and their vulnerabilities. Systematic analysis of SC depth distributions across databases of SC profiles has been challenging due to the heterogeneity of soil profile measurements, which vary in depth sampling. Here, we fit over 40,000 SC depth profiles to an exponential decline relationship with depth to determine SC concentration at the top of the mineral soil, minimum SC concentration at depth, and the characteristic “length” of SC concentration decline with depth. Fitting these parameters allowed profile characteristics to be analyzed across a large and heterogeneous dataset. We then assessed the differences in these depth parameters across soil orders and land cover types and between soil profiles with or without a history of tillage, as represented by the presence of an Ap horizon. We found that historically tilled soils had more gradual decreases of SC with depth (greater e-folding depth or Z∗), deeper SC profiles, lower SC concentrations at the top of the mineral soil, and lower total SC stocks integrated to 30 cm. The large database of profiles allowed these results to be confirmed across different land cover types and spatial areas within the Continental United States, providing robust evidence for systematic impacts of historical tillage on SC stocks and depth distributions

On the role of soil water retention characteristic on aerobic microbial respiration

Soil water status is one of the most important environmental factors that control microbial activity and rate of soil organic matter (SOM) decomposition. Its effect can be partitioned into effect of water energy status (water potential) on cellular activity, effect of water volume on cellular motility, and aqueous diffusion of substrate and nutrients, as well as the effect of air content and gas-diffusion pathways on concentration of dissolved oxygen. However, moisture functions widely used in SOM decomposition models are often based on empirical functions rather than robust physical foundations that account for these disparate impacts of soil water. The contributions of soil water content and water potential vary from soil to soil according to the soil water characteristic (SWC), which in turn is strongly dependent on soil texture and structure. The overall goal of this study is to introduce a physically based modeling framework of aerobic microbial respiration that incorporates the role of SWC under arbitrary soil moisture status. The model was tested by comparing it with published datasets of SOM decomposition under laboratory conditions.</p