Penerapan Model Pembelajaran Treffinger untuk Meningkatkan Aktifitas dan Prestasi Belajar Siswa SMP

Penyebab suasana belajar tidak hidup dan membuat siswa jenuh terhadap materi pelajaran yang berakibat pada rendahnya aktivitas dan prestasi belajar siswa. berdasarkan latar belakang tersebut maka rumusan masalahnya adalah bagaimanakah menerapkan model pembelajaran Treffinger untuk meningkatkan aktivitas dan prestasi belajar siswa pada pembelajaran PKn kelas VIII SMP. Tujuan penelitian ini adalah untuk mendiskripsikan cara penggunaan model pembelajaran Treffinger untuk meningkatkan aktivitas dan prestasi belajar siswa pada pembelajaran PKn kelas VIII SMP. Rancangan penelitian yang digunakan yaitu penelitan tindakan kelas dengan pendekatan yang di gunakan dalam penelitian ini adalah pendekatan kualitatif dan pendekatan kuantitatif. Pendekatan kualitatif di gunakan untuk mengolah data hasil observasi dalam pelaksanaan, sedangkan pendekatan kuantitatif di gunakan untuk mengolah data prestasi belajar. Berdasarkan hasil penelian dan hasil analisis data yang di lakukan, maka dapat menarik di simpulkanbahwa terjadi peningkatan ketuntasan klasikal siswa yaitu pada siklus I 66% dan pada siklu II sebesar 88%, sehingga dapat disimpulkan bahwa penerapan model pembelajaran Treffinger dapat meningkatkan aktivitas dan prestasi belajar siswa PKn kelas VIII SMP

Overview of Health Impacts Due to Haze Pollution in Johor, Malaysia

Haze pollution is one of the major environmental issues caused by aerosols, having brought about a history of heavy smog pollution events like the London smog in 1952 and the Los Angeles smog in the 1960s. However, in Malaysia, haze events are attributed to forest and peat fires in Kalimantan and Southern Sumatra, Indonesia. The burned biomass basically contains concentrated particulate matters that are hazardous to health among susceptible population groups. Based on the extensive literature review conducted, the small number of available local studies on the health effects of air pollution in Malaysia conducted so far focused on air pollution sciences. In this paper, a comprehensive overview of studies done on the impacts of haze on health conditions among populations in Malaysia is presented. The result shows that the number of upper respiratory tract infection cases was directly proportional to the particulate matter concentration and Air Pollution Index value in Johor in the years 2014 and 2015. Particulate matteris the major contributor in the formation of heavy hazes and is more likely to initiate detrimental health effects compared to other inhalable particles due to their size, large area, and strong activity, making them more likely to carry harmful substances causing a higher number of infected patients with upper respiratory tract infections

Crop water requirement at different growing stages of pineapple production in BRIS soil

The BRIS (Beach Ridges Interspersed with Swales) soils are the sandy marine deposits at the east coast of Peninsular Malaysia. The area is less suitable for usual field crops. Pineapple (Ananas comosus) may be introduced in the area for commercial cultivation. An experiment was conducted in the glass house condition of UPM. Pineapple plants were nurtured in the lysimeters, filled with BRIS soil, to assess the water requirements at different growth stages. Highest requirement of irrigation water was found 2.43 mm/day in initial stage (1). Subsequent development stage (2), mid-stage (3) and ripening stage (4) required smaller amount of irrigation water (approximately 1.55 mm/day). The daily average evapotranspiration (ETc) was 0.83 mm/day in Stage 1, followed by 0.73 mm/day in Stage 2. The lowest ETc was found 0.65 mm/day in Stage 3. The estimated crop coefficient (K ) was found maximum 0.51 in initial stage. The Kc values showed a continuous decreasing trend up harvesting time. The second highest Kc value was 0.37 in development stage followed by 0.33 in mid-stage and minimum 0.30 during ripening stage

Growth, photosynthesis and biomass allocation of different kenaf (Hibiscus cannabinus L.,) accessions grown on sandy soil.

Growth, photosynthesis, and biomass allocation of kenaf accessions were investigated. Forty kenaf accessions from tropical and subtropical regions of the world were grown on marginal sandy soil in a field at Kelantan to determine differences in their growth, photosynthesis and biomass allocation. The experiment was arranged using three replicates in a randomized complete block design. Basal diameter, plant height, leaf number, leaf area and photosynthesis were measured, these being the determinants of growth and biomass production. Plant roots, stems and leaves were separated and biomass content determined at harvest. Accession 35 had the highest value for basal diameter (17.44 mm), plant height (251.73 cm), leaf quantity (81.55), leaf area (1455.62 cm2 plant-1) and photosynthesis (16.92 µmol m-2s-1), followed by accession 28. A positive relationship was noticed between plant height, leaf area, photosynthesis, biomass production, root mass and leaf area. Total biomass for the different kenaf accessions ranged from 26.26 to 93.06 g plant-1 (-1 needs to be superscripted). Stems accounted for the greatest proportion of dry mass (67.05%), followed by roots(21.15%). Dry mass accumulation in the stem was highest in accession 35, followed by accession 28. Using cluster analysis, the accessions were divided into two major groups, in which accessions 35 and 28 from the first group had the highest values of all measured parameters. The results of the study will aid in the selection of better accessions for growers to produce kenaf that is best suited to marginal sandy soil

Preliminary Study of CST in Malaysia based on Field Optical Efficiency

Solar is one of the many sources of renewable energy, and Concentrating Solar Tower (CST) is one of the most potential technologies in extracting solar energy. Thermal efficiency of CST is high and suitable to be implemented in a tropical climate country such as Malaysia which is located between at 10 to 70 North latitude and 1000 to 1200 east longitude. Further, Malaysia's direct normal irradiation (DNI) in tropical climate is almost constant throughout a year with the irradiation around 1500 to 2000 kWh/m2. Therefore the aim of this paper is to mathematically calculate the CST field layout in Malaysia in term of thermal efficiency based on cosine efficiency, atmosphere efficiency and mirror efficiency. The preliminary result from this paper shows Malaysia is a suitable location to develop CST with average of atmospheric transmittance efficiency and cosine efficiency of 94% and 63% respectively and the overall optical field efficiency is 52%. In addition, the atmospheric transmittance and cosine efficiency has high value but the efficiency gradually decreases whenever the distance increases. Nevertheless further investigation in term of solar irradiation and raining pattern in Malaysia is needed

In Silico Screening and Designing Synthesis of Cinchona Alkaloids Derivatives as Potential Anticancer

P-glycoprotein (P-gp) resistance in cancer cells decreases intracellular accumulation of various anticancer drugs. This multidrug resistance (MDR) protein can be modulated by a number of non-cytotoxic drugs. We have screened 30 chincona alkaloids derivatives as a potent P-gp inhibitor agent in silico. Hereby, we report the highest potential inhibitions of P-gp is Cinchonidine isobutanoate through molecular docking approach. with affinity energy -8.6 kcal/mol and inhibition constant, Ki is 4.89 x 10-7 M. Cinchonidine isobutanoate is also known has molecular weight below 500, Log P value 3.5, which is indicated violation free of Lipinski`s rule of five. Thus, Cinchonidine isobutanoate is the most potent compound as anticancer compare to other Cinchona alkaloids. Ultimately, we design Cinchonidine isobutanoate for further lead synthesis by using DBSA, act as a combined Brønsted acid-surfactant-catalyst (BASC) to obtain high concentration of organic product by forming micellar aggregates which is very powerful catalytic application in water environment

Normalization of the EKG in patients with right bundle branch block by Right ventricular pacing

Right ventricle apex (RVA) pacing bypasses the His-Purkinje system result-ing in left bundle branch block like pattern on surface EKG. In preexisting right bundle branch block (RBBB), pacing from certain location of RV might change the EKG pattern. We present two cases of normalization of QRS complex upon RV septal pacing in preexisting RBBB patients. The postulated mechanisms of the phenomenon is also proposed