Efektivitas Model Jigsaw Disertai Penilaian Diskusi untuk Meningkatkan Kemampuan Matematis Mahasiswa

Penelitian ini bertujuan untuk mengetahui perbedaan peningkatan kemampuan matematis mahasiswa yang menggunakan model jigsaw disertai penilaian diskusi dengan tanpa penilaian diskusi dan perkuliahan konvensional. Penelitian ini menggunakan metode true eksperiment dengan randomized control-group pretest-posttest design. Populasi penelitian adalah mahasiswa yang mengambil mata kuliah Aljabar Linier Elementer. Sampel sebanyak tiga kelas dipilih secara cluster random sampling. Data yang diperoleh dengan teknik tes (awal dan akhir), sedang analisis data dilakukan dengan menggunakan skor gain rata-rata. Sebelum data dianalisis terlebih dahulu dilakukan uji persyaratan, yaitu berupa uji normalitas, homogenitas, dan kesamaan kompeetnsi awal. Hasil penelitian menunjukkan bahwa terdapat perbedaan peningkatan kemampuan matematis mahasiswa yang menggunakan model jigsaw disertai penilaian diskusi dengan tanpa penilaian diskusi dan perkuliahan konvensional

PENGUJIAN EFEK DIURETIK SARI WORTEL (Daucus carota L.) PADA TIKUS PUTIH JANTAN GALUR WISTAR (Rattus norvegicus)

Carrot (Daucus carota L.) is a plant which used as traditional medicine and one of its benefits isas diuretic. The research was aimed to find out diuretic effect of Carrot juice and relationship ofthe increases of Carrot juice (Daucus carota L.) concentration on white male mice strain Wistar(Rattus norvegicus). Fifteen mices were divided into five group of treatment, namely negativecontrol group (CMC 1% suspension), positive control group (furosemid suspension), 15%suspension of carrot juice group, 30% suspension of carrot juice group and 60% suspension ofCarrot juice group.The test of diuretic effect were conducted by calculate volume of excretedurine during 24 hours treatment. Data were analyzed using spss ver.19. The differences betweentreatments were analyzed using one way ANOVA.The result shows that suspension of Carrotjuice treatment increase urine volume. The increases of juice concentration shows better effect.Based on result, it can be concluded that Carrot juice possess diuretic effect (p<0,05), and thereare correlation between concentrations of Carrot juice to the increasing of urinevolume.Keywords : Carrot juice, diuretic effect, Rattus norvegicu

Biological systems of the host cell involved in Agrobacterium infection

Genetic transformation of plants by Agrobacterium , which in nature causes neoplastic growths, represents the only known case of trans -kingdom DNA transfer. Furthermore, under laboratory conditions, Agrobacterium can also transform a wide range of other eukaryotic species, from fungi to sea urchins to human cells. How can the Agrobacterium virulence machinery function in such a variety of evolutionarily distant and diverse species? The answer to this question lies in the ability of Agrobacterium to hijack fundamental cellular processes which are shared by most eukaryotic organisms. Our knowledge of these host cellular functions is critical for understanding the molecular mechanisms that underlie genetic transformation of eukaryotic cells. This review outlines the bacterial virulence machinery and provides a detailed discussion of seven major biological systems of the host cell–cell surface receptor arrays, cellular motors, nuclear import, chromatin targeting, targeted proteolysis, DNA repair, and plant immunity – thought to participate in the Agrobacterium -mediated genetic transformation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75425/1/j.1462-5822.2006.00830.x.pd

Análisis de la distribución espacial de los accidentes de transporte terrestre atendidos por el Servicio Móvil de Urgencia (SAMU-192), en un municipio de la región nordeste de Brasil

Se describen las características epidemiológicas de las víctimas de accidentes de transporte terrestre atendidas por el Servicio Móvil de Urgencia (SAMU-192) y se localizan las áreas de mayor densidad de accidentes en el municipio de Olinda (Pernambuco, Brasil). Se empleó la estimación de densidad kernel para la detección de aglomerados espaciales de accidentes. En 2015 se registraron 724 accidentes. El 73,48% de las personas afectadas fueron del sexo masculino, y de entre 20 y 39 años de edad. Hubo un predominio de los accidentes con motocicletas (54,97%). Los aglomerados de accidentes se localizaron en las principales vías de tránsito y, los atropellamientos, cercanos a las terminales de ómnibus. El análisis espacial se mostró como un instrumento relevante para la identificación de los aglomerados de accidentes y una aplicación eficaz de las medidas de prevención y la mejora en la seguridad del tránsito vehicular.This study describes the epidemiological characteristics of road accident victims attended by the Brazilian Mobile Emergency Service (SAMU-192) and located in the areas of highest accident density in the municipality of Olinda, (Pernambuco, Brazil). Kernel density estimation was used to detect spatial agglomerations of accidents. In 2015, 724 accidents occurred; of these, 73.48% of the victims were males aged 20- 39 years. There was a predominance of accidents involving motorcycles (54.97%). Accident clusters were detected in the main traffic corridors, with run-over accidents located near bus terminals. Spatial analysis proved to be a relevant instrument for the identification of accident clusters and the application of effective prevention and traffic safety improvement measures