The Effect of Applying Predict, Organize, Rehearse, Practice, Evaluate (PORPE) Strategy on Students' Reading Comprehension

This study was conducted as an attempt to find out the effect of applying Predict, Organize, Rehearse, Practice, Evaluate (PORPE) strategy on students' reading comprehension. This study used experimental design. The population of this study was students of Grade XI, Senior High School (Sekolah Menengah Atas: SMA) Negeri 1 Lumbanjulu which consisted of 120 students. There were sixty students from the population taken as the sample in this study. The sample was divided into two randomized groups: experimental and control groups. The experimental group was taught by using PORPE strategy, while the control group was taught by using conventional method.To obtain the reliability of the test, the writer applied Kuder Richardson 21 formula (KR-21). The result of the reliability was 0.81. The data were analyzed by using t-test formula. The analysis showed that the scores of the students in the experimental group were significantly higher than the scores of the students in the control group at the level of significance 0.05 with the degree of freedom (df) 58 , t-observed value 2.8 > t-table value 2.00. The findings indicated that using PORPE strategy significantly affected the students' reading comprehension. Therefore, the null hypothesis (Ho) was rejected and the alternative hypothesis (Ha) was accepted

Comparison of Blood Pressure and Blood Glucose Levels in Chronic Kidney Failure Patients Before and After Hemodialysis Treatment in RSMH Palembang

Gagal ginjal kronik ditandai dengan menurunnya fungsi ginjal secara ireversibel yang telah berlansung lebih dari tiga bulan dengan nilai laju filtrasi glomerulus kurang dari 15 ml/menit/1,73m2. Hemodialisis merupakan salah satu terapi pengganti ginjal yang paling sering dilakukan, namun hemodialisis memiliki komplikasi terhadap perubahan tekanan darah dan kadar gula darah. Penelitian ini bertujuan untuk mengetahui perbandingan tekanan darah dan kadar gula darah pada pasien gagal ginjal kronik sebelum dan sesudah hemodialisis di unit hemodialisis RSUP dr. Mohammad Hoesin Palembang. Penelitian ini merupakan penelitian observasional analitik dengan desain longitudinal menggunakan pengukuran berulang. Subjek penelitian adalah 74 pasien gagal ginjal kronik yang memenuhi kriteria inklusi dan eksklusi. Data penelitian diperoleh melalui data primer (pengukuran dan wawancara) dan dianalisis menggunakan Paired T-Test dan Wilcoxon. Rata-rata tekanan darah sebelum hemodialisis adalah 150,14 ± 30,045 mmHg (sistolik) dan 83,99 ± 16,469 mmHg (diastolik) serta sesudah hemodialisis adalah 159,66 ± 33,570 mmHg (sistolik) dan 86,35 ± 15,534 mmHg (diastolik). Rata-rata kadar gula darah sebelum hemodialisis adalah 161,61 ± 80,750 mg/dl serta sesudah hemodialisis adalah 131,51 ± 49,430 mg/dl. Hasil uji Paired T-Test menunjukkan perbandingan tekanan sistolik yang signifikan (p = 0,007), sedangkan hasil uji Wilcoxon menunjukkan perbandingan diastolik yang tidak signifikan (p = 0,193) dan perbandingan kadar gula darah yang signifikan (p = 0,000). Terdapat perbandingan tekanan darah sistolik yang signifikan, tekanan darah diastolik yang tidak signifikan, dan kadar gula darah yang signifikan sebelum dan setelah hemodialisis pada pasien gagal ginjal kronik di RSUP dr. Mohammad Hoesin Palembang

Dispersive diffusion controlled distance dependent recombination in amorphous semiconductors

The photoluminescence in amorphous semiconductors decays according to power law $t^{-delta}$ at long times. The photoluminescence is controlled by dispersive transport of electrons. The latter is usually characterized by the power $alpha$ of the transient current observed in the time-of-flight experiments. Geminate recombination occurs by radiative tunneling which has a distance dependence. In this paper, we formulate ways to calculate reaction rates and survival probabilities in the case carriers execute dispersive diffusion with long-range reactivity. The method is applied to obtain tunneling recombination rates under dispersive diffusion. The theoretical condition of observing the relation $delta = alpha/2 + 1$ is obtained and theoretical recombination rates are compared to the kinetics of observed photoluminescence decay in the whole time range measured.Comment: To appear in Journal of Chemical Physic

Model Pembelajaran Kooperatif Tipe Stad (Student Teams Achievement Division) Dikombinasikan dengan Media Animasi pada Materi Laju Reaksi Kelas XI SMA Negeri 1 Palu

Students have difficulties in understanding chemistry subject contained mathematical calculation like on reaction rate topic. Cooperative learning model STAD type can be an alternative for the material contained calculation whereas animation media is for conceptual understanding. The objective of the research was to determine the influence of cooperative learning model STAD type combined with animation media for the eleventh grade students of SMA Negeri 1 Palu in academic year 2012/2013 toward the students' learning outcome on reaction rate material. This research was quasy experimental using posttest-only control group design. The population was the whole eleventh grade students of science program with the sample determination using purposive sampling method. The sample were class of science program 2 as the experimental class which using cooperative learning model STAD type with animation media whereas class of science program 4 as the control one which using convensional learning method. The research results showed that cooperative learning model STAD type combined with animation media at reaction rate material gave students' learning outcome higher than convensional method

Ubiquitin-based probes prepared by total synthesis to profile the activity of deubiquitinating enzymes

Epitope-tagged active-site-directed probes are widely used to visualize the activity of deubiquitinases (DUBs) in cell extracts, to investigate the specificity and potency of small-molecule DUB inhibitors, and to isolate and identify DUBs by mass spectrometry. With DUBs arising as novel potential drug targets, probes are required that can be produced in sufficient amounts and to meet the specific needs of a given experiment. The established method for the generation of DUB probes makes use of labor-intensive intein-based methods that have inherent limitations concerning the incorporation of unnatural amino acids and the amount of material that can be obtained. Here, we describe the total chemical synthesis of active-site-directed probes and their application to activity-based profiling and identification of functional DUBs. This synthetic methodology allowed the easy incorporation of desired tags for specific applications, for example, fluorescent reporters, handles for immunoprecipitation or affinity pull-down, and cleavable linkers. Additionally, the synthetic method can be scaled up to provide significant amounts of probe. Fluorescent ubiquitin probes allowed faster, in-gel detection of active DUBs, as compared to (immuno)blotting procedures. A biotinylated probe holding a photocleavable linker enabled the affinity pull-down and subsequent mild, photorelease of DUBs. Also, DUB activity levels were monitored in response to overexpression or knockdown, and to inhibition by small molecules. Furthermore, fluorescent probes revealed differential DUB activity profiles in a panel of lung and prostate cancer cells