Implementasi Model Pembelajaran Savi Untuk Meningkatkan Hasil Belajar Siswa Dalam Mata Pelajaran Perhitungan Statika Bangunan Pada Siswa Kelas X Tgb a Smk Negeri 3 Palu Tahun Pelajaran 2014/2015

Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar siswa dalam mata pelajaran statika dengan menerapkan model pembelajaran SAVI. Penelitian ini dilaksanakan dengan metode penelitian tindakan kelas pada siswa kelas X TGB A SMK Negeri 3 Palu yang berjumlah 33 orang siswa. Penelitian ini dilaksanakan dalam 2 siklus pembelajaran. Hasil belajar yang dimaksud dalam penelitian ini adalah mencakup aspek kognitif, aspek afektif dan aspek psikomotor. Hasil belajar kognitif dikumpulkan dengan menggunakan tes, sedangkan hasil belajar afektif dan psikomotor dikumpulkan dengan menggunakan lembar penilaian observasi. Temuan penelitian menunjukan bahwa adanya peningkatan hasil belajar setelah penerapan model pembelajaran SAVI. Maka dapat disimpulkan bahwa model pmebelajaran SAVI dapat meningkatkan hasil belajar siswa kelas X TGB A pada mata pelajaran perhitungan statika

Pengaruh Teknik Back Massage (Masase Punggung) Terhadap Penurunan Intensitas Nyeri Pada Pasien Post Operasi Appendiksitis Di RSU Royal Prima Medan 2018

Pain is an unpleasant sensory and emotional experience due to actual and potential tissue damage. One of the non-pharmacological therapies to deal with pain is the back massage technique. The technique can reduce the intensity of pain in postoperative appendicitis patients so that the therapy can provide comfort for the patient. This study aims to explore the effect of back massage technique on reducing pain intensity in patients with postoperative appendicitis. This type of research is pre-experimental using a one-group pre-post design test. The research population included 13 patients postoperative appendicitis at Royal Prima Hospital Medan in 2018. The research samples were drawn by using the Accidental Sampling technique. The research was conducted on March 2018 at Royal Prima hospital Medan. The research data were analyzed using Wilcoxon Test with a significant value of α = 0.05. The patient experienced pain before back massage was provided and after the administration of back massage technique, patient experiencing mild pain was 60% and 40% experienced moderate pain. The results of bivariate analysis showed that p-value = 0.034. This showed that there was a difference between the intensity of pain before and after the back massage technique was performed in patients with postoperative appendicitis. From the results of the above research, it is suggested that the implementation of back massage techniques has an effect on the decrease in pain intensity in patients with postoperative appendicitis. This back massage technique can be applied at hospitals as a measure of pain management which is an independent action of the nurse to handle the patient\u27s pain

Hubungan Pengetahuan dan Sikap Pasien Hipertensi dengan Uapaya Pencegahan Penyakit Jantung Hipertensi di Poli Penyakitjantung Rumah Sakit Umum Daerah Raden Mattaher Jambi Tahun 2017

Hipertensi merupakan masalah kesehatan yang umum dijumpai dengan kosekuensi yang terkadang sangat merugikan, dan sering asimtomatik sampaiperkembangan tahap lanjut seperti Penyakit jantung hipertensi (hypertension heartdesease/ HHD). Kejadian hipertensi meningkat setiap tahunnya data WHO (WorldHealth Organization) tahun 2000 menunjukkan diseluruh dunia sekitar 972 juta orangatau 26,4% penghuni bumi mengidap hipertensi dengan perbandingan 26,6% priadan 26,1% wanita. Angka ini kemungkinan akan meningkat menjadi 29,2% di tahun2025. Dari 972 juta pengidap hipertensi, 333 juta berada di negara maju dan 639sisanya berada di negara berkembang, termasuk Indonesia Penelitian ini merupakan penelitian kuantitatif dengan menggunakan metodecross sectional yang bertujuan untuk mengetahui hubungan antara variabelindependen (pengetahuan dan sikap) dengan variabel dependen (upayapencegahan penyakit jantung hipertensi) pada waktu yang bersamaan. Sampel yangdiambil dalam penelitian ini adalah penderita hipertensi tanpa HHD yang berjumlah87 orang. Hasil analisis menunjukkan adanya hubungan yang bermakna antara tingkatpengetahuan dengan upaya pencegahan penyakit jantung hipertensi dengan nilai pvalue (0.001),danterdapathubunganyangbermaknaantarasikapdenganuapaya pencegahanpenyakitjantunghipertensidengannilaip-value(0.048). Berdasarkan permasalahan diatas maka diharapkan perawat serta tenagakesehatan lainnya untuk meningkatkan pengetahuan pasien dengan pemberianleaflet dan pemberian motivasi kepada pasien terkait dengan upaya pencegahanakibat lanjut dari hipertensi kepada pasien yang berkunjung di Poli Penyakit JantungRumah Sakit Umum Daerah Raden Mattaher Jambi

Density structure and isostasy of the lithosphere in Egypt and their relation to seismicity

A joint analysis of the new satellite–terrestrial gravity field model with recent data on the crustal structure and seismic tomography was conducted to create an integrative model of the crust and upper mantle and to investigate the relation of the density structure and the isostatic state of the lithosphere to the seismicity of Egypt. We identified the distinct fragmentation of the lithosphere of Egypt in several blocks. This division is closely related to the seismicity patterns in this region. The relatively dense and strong lithosphere in the Nile Delta limits the seismic activity within this area, while earthquakes are mainly associated with the boundaries of this block. In the same way, the relatively strong lithosphere in the Isthmus of Suez and northern Mediterranean prevents the Gulf of Suez from opening further. The central part of Egypt is generally characterized by an increased density of the mantle, which extends to the Mediterranean at a depth of 100 km. This anomaly deepens southward to Gilf Kebir and eastward to the Eastern Desert. The average density of the crystalline crust is generally reduced in this zone, indicating the increased thickness of the upper crust. The low-density anomaly under the northern Red Sea is limited to 100–125 km, confirming the passive origin of the extension. Most of the earthquakes occur in the crust and uppermost mantle in this structure due to the hot and weak upper mantle underneath. Furthermore, an asymmetric lithosphere structure is observed across the northern Red Sea. The isostatic anomalies show the fragmentation of the crust of Sinai with the high-density central block. Strong variations in the isostatic anomalies are correlated with the high level of seismicity around Sinai. This tendency is also evident in the northern Red Sea, east of the Nile Valley, and in parts of the Western Desert.</p

A Thermo-Compositional Model of the African Cratonic Lithosphere

Recently, the continually increasing availability of seismic data has allowed high-resolution imaging of lithospheric structure beneath the African cratons. In this study, S-wave seismic tomography is combined with high resolution satellite gravity data in an integrated approach to investigate the structure of the cratonic lithosphere of Africa. A new model for the Moho depth and data on the crustal density structure is employed along with global dynamic models to calculate residual topography and mantle gravity residuals. Corrections for thermal effects of an initially juvenile mantle are estimated based on S-wave tomography and mineral physics. Joint inversion of the residuals yields necessary compositional adjustments that allow to recalculate the thermal effects. After several iterations, we obtain a consistent model of upper mantle temperature, thermal and compositional density variations, and Mg# as a measure of depletion, as well as an improved crustal density model. Our results show that thick and cold depleted lithosphere underlies West African, northern to central eastern Congo, and Zimbabwe Cratons. However, for most of these regions, the areal extent of their depleted lithosphere differs from the respective exposed Archean shields. Meanwhile, the lithosphere of Uganda, Tanzania, most of eastern and southern Congo, and the Kaapvaal Craton is thinner, warmer, and shows little or no depletion. Furthermore, the results allow to infer that the lithosphere of the exposed Archean shields of Congo and West African cratons was depleted before the single blocks were merged into their respective cratons

Flash Joule heating for ductilization of metallic glasses

Metallic glasses (MGs) inherit their amorphous structure from the liquid state, which predetermines their ability to withstand high loads approaching the theoretical limit. However, the absence of slip systems makes them very sensitive to the type of loading and extremely brittle in tension. The latter can be improved by precipitation of ductile crystals, which suppress a catastrophic propagation of shear bands in a glassy matrix. Here we report a novel approach to obtain MG-matrix composites with tensile ductility by flash Joule heating applied to Cu47.5Zr47.5Al5 (at.%) metallic glass. This homogeneous, volumetric and controllable rapid heat treatment allows achieving uniformly distributed metastable B2 CuZr crystals in the glassy matrix. It results in a significant tensile strain of 6.8±0.5%. Moreover, optimized adjustment of the heat-treatment conditions enables tuning of microstructure to achieve desired mechanical properties

Defisiensi Besi dan Anemia Defisiensi Besi pada Anak Remaja Obes

Latar belakang. Remaja merupakan kelompok risiko tinggi untuk mengalami defisiensi besi. Obesitas pada remaja meningkatkan risiko defisiensi besi akibat perbedaan pola asupan dan inflamasi kronik derajat rendah. Tujuan. Mengetahui status besi dan asupan besi remaja obes usia 15 -17 tahun. Metode. Penelitian potong lintang pada remaja usia 15 – 17 tahun di dua SMU Jakarta Pusat pada bulan September – November 2015. Subjek dibagi menjadi 2 kelompok berdasarkan indeks massa tubuh (IMT). Subjek dinyatakan obes bila IMT≥P95 dan non-obes bila IMT ≥P5 - <P85. Kepada subjek dilakukan penilaian status besi, yaitu hemoglobin, mean corpusculus volume (MCV), besi serum, feritin, saturasi transferin, dan total iron bonding capacity (TIBC) serta analisis diet. Hasil. Sebanyak 100 subyek memenuhi kriteria inklusi yang terdiri dari 52 subjek obes dan 48 subjek non-obes. Tidak terdapat perbedaan bermakna proporsi defisiensi besi dan anemia defisiensi besi pada kelompok obes dan non-obes (9,6% vs 16,7%; p=0,295). Tidak terdapat perbedaan bermakna asupan zat besi total kelompok obes dan non-obes ( 8 (2,6 – 95,9) mg/hari vs 10 (1,8 – 83,4) mg/hari; p=0,188). Persentase asupan zat besi hem kelompok obes lebih tinggi dibandingkan kelompok non-obes (31 (0,0 – 95,6)% vs 20 (15,2 – 100,0)%; p=0,029). Kesimpulan. Tidak terdapat perbedaan proporsi defisiensi besi dan anemia defisiensi besi pada remaja obes dan non obes usia 15 – 17 tahun. Tidak terdapat perbedaan rerata asupan zat besi remaja obes dan non-obes usia 15 – 17 tahun

Modeling Lithospheric Thickness Along the Conjugate South Atlantic Passive Margins Implies Asymmetric Rift Initiation

The lithospheric architecture of passive margins is crucial for understanding the tectonic processes that caused the breakup of Gondwana. We highlight the evolution of the South Atlantic passive margins by a simple thermal lithosphere-asthenosphere boundary (LAB) model based on onset and cessation of rifting, crustal thickness, and stretching factors. We simulate lithospheric thinning and select the LAB as the T = 1,330°C isotherm, which is calculated by 1D advection and diffusion. Stretching factors and margin geometry are adjusted to state-of-the-art data sets, giving a thermal LAB model that is especially designed for the continental margins of the South Atlantic. Our LAB model shows distinct variations along the passive margins that are not imaged by global LAB models, indicating different rifting mechanisms. For example, we model up to 200 km deep lithosphere in the South American Santos Basin and shallow lithosphere less than 60 km in the Namibe Basin offshore Africa. These two conjugate basins reflect a strong asymmetry in LAB depth that resembles variations in margin width. In a Gondwana reconstruction, we discuss these patterns together with seismic velocity perturbations for the Central and Austral Segments of the margins. The shallow lithosphere in the Namibe Basin correlates with signatures of the Angola Dome, attributed to epeirogenic uplift in the Neogene, suggesting an additional component of post-breakup lithospheric thinning

Efficient 3-D Large-Scale Forward Modeling and Inversion of Gravitational Fields in Spherical Coordinates With Application to Lunar Mascons

A novel efficient forward modeling algorithm of gravitational fields in spherical coordinates is developed for 3D large-scale gravity inversion problems. 3D Gauss-Legendre quadrature (GLQ) is used to calculate the gravitational fields of mass distributions discretized into tesseroids. Equivalence relations in the kernel matrix of the forward-modeling are exploited to decrease storage and computation time. The numerical investigations demonstrate that the computation time of the proposed algorithm is reduced by approximately two orders of magnitude, and the memory requirement is reduced by N'l times compared with the traditional GLQ method, where N'l is the number of model elements in the longitudinal direction. These significant improvements in computational efficiency and storage make it possible to calculate and store the dense Jacobian matrix in 3D large-scale gravity inversions. The equivalence relations could be equally applied to the Taylor series method or combined with the adaptive discretization to ensure high accuracies

Optimizing mechanical properties of Fe26.7Co26.7Ni26.7Si8.9B11 high entropy alloy by inducing hypoeutectic to quasi-duplex microstructural transition

High-entropy alloys (HEAs) have inspired considerable interest due to their attractive physical and mechanical properties. In this work, the microstructural evolution induced by different heat treatments on rapidly solidified hypoeutectic precursors of a Fe26.7Co26.7Ni26.7Si8.9B11 HEA is investigated and correlated with the corresponding mechanical properties. The microstructures of the rapidly solidified precursors are composed of primary fcc solid solution dendrites embedded in a eutectic matrix. When the samples are annealed at different temperatures after furnace cooling or quenching, respectively, the eutectic structure gradually decomposes into fcc, tetragonal (Fe,Co)2B, and hexagonal Ni31Si12 crystals with increasing annealing temperature, leading to a gradual increase of the content of the fcc crystals and both their aggregation and coarsening. Then the dominant structural framework gradually transforms from eutectic structures to fcc dendrites and ultimately the (Fe,Co)2B crystals become isolated as dominant reinforcement particles distributed in the interdendritic regions. This gradual microstructural transition from hypoeutectic to quasi-duplex structures leads to the change of the dominant deformation mechanism from crack-controlled to dislocation-dominated deformation, which allows to control both ductility and strength in a wide range. Hence, this study provides some guideline for how to tune the microstructure and mechanical properties of HEAs