Kadar Natrium Serum Pada Latihan Fisik Intensitas Ringan Mahasiswa Fakultas Kedokteran Universitas Sam Ratulangi

: Sodium is the most abundant cation in extracellular fluids that creates much of osmotic pressure to maintain intravascular and interstitial volume to protect the body from excessive fluid loss and it is the highest concentration of electrolytes that carried out of the body through sweat. This study aimed to detect changes in sodium levels before and after light intensity exercise in the students year 2010 Faculty of Medicine Sam Ratulangi University. This study was a pre-experimental with one group pretest & posttest design. The respondents on this study were 19-22 years, consisting of 18 men and 12 women. Data was collected by determining the serum sodium levels before and after 30 minutes light intensity physical exercise on treadmill. Sodium levels before physical exercise were 140.70 ± 2.231 and after physical exercise were 141.80 ± 1.750. Statistical test results showed there were significant differences in serum sodium levels before and after light intensity exercise (p =0.001). It can be concluded there is an effect of light intensity physical exercise in serum sodium levels in the students year 2010 Faculty of Medicine Sam Ratulangi University

GAMBARAN PENGETAHUAN DAN TINDAKAN MASYARAKAT TENTANG PENGENDALIAN VEKTOR DEMAM BERDARAH DENGUE DI DESA TOUURE KABUPATEN MINAHASA TAHUN 2020

Demam Berdarah Dengue (DBD) adalah salah satu penyakit menular yang dapat dan sering menimbulkan wabah yang tidak jarang menyebabkan kematian. Berdasarkan data kasus DBD di tahun 2017 kasus DBD yang ada di wilayah kerja Puskesmas Tompaso berjumlah 9 kasus, pada tahun 2018 terdapat 8 kasus DBD di wilayah kerja Puskesmas Tompaso, sedangkan di tahun 2019 sebanyak 36 kasus yang berada di wilayah kerja Puskesmas Tompaso dan 18 kasus (50% dari total kasus) berasal dari Desa Touure Kecamatan Tompaso Kabupaten Minahasa. Masih tingginya angka kesakitan dan kematian DBD salah satu faktornya adalah kurangnya pengetahuan masyarakat tentand DBD dan tindakan masyarakat yang kurang baik dalam pengendalian vektor DBD berpotensi menjadi factor risiko penularan penyakit DBD. Tujuan penelitian adalah untuk mengetahui gambaran pengetahuan dan tindakan masyarakat tentang pengendalian vektor DBD di desa Touure kecamatan Tompaso tahun 2020. Jenis penelitian yang digunakan yaitu penelitian survei deskriptif. Sampel penelitian adalah masyarakat desa Touure kecamatan Tompaso sebanyak 70 masyarakat. Analisis data dilakukan secara deskriptif berdasarkan distribusi frekwensi. Instrumen yang digunakan dalam penelitian berupa kuesioner selain itu, penelitian ini menggunakan alat tulis menulis, komputer/ laptop dan kamera. Data yang diperoleh ditampilkan menggunakan tabel. Hasil penelitian menunjukkan bahwa pengetahuan responden paling banyak terdistribusi pada kategori tidak baik (78,6%), menunjukkan bahwa tindakan responden paling banyak terdistribusi pada kategori tidak baik (70%).         Kata Kunci :Demam Berdarah Dengue, Pengetahuan masyarakat, Tindakan masyarakat ABSTRACTDengue Hemorrhagic Fever (DHF) is a contagious disease that can and often causes epidemics that often cause death. Based on data on dengue cases in 2017 there were 9 cases of dengue fever in the Tompaso Puskesmas work area, in 2018 there were 8 cases of dengue in the Tompaso Puskesmas work area, while in 2019 there were 36 cases in the Tompaso Puskesmas work area and 18 cases (50% of the total cases) came from Touure Village, Tompaso District, Minahasa Regency. The high rate of DHF morbidity and mortality is one of the factors is the lack of public knowledge about DHF and poor community action in controlling the DHF vector which is a risk factor for DHF transmission. The research objective was to describe the knowledge and actions of the community about dengue fever in the village of Touure, Tompaso District in 2020. The type of research used was descriptive survey research. The research sample was 70 people in Touure village, Tompaso district. Data analysis was carried out descriptively based on frequency distribution. The instrument used in the research was a questionnaire in addition to that, research using written stationery, computers / laptops and cameras. Data that can be used using tables. The results showed that the respondents' knowledge was mostly distributed in the bad category (78.6%), indicating that the respondent's actions were mostly distributed in the bad category (70%). Keywords : Dengue Hemorrhagic Fever, Community Knowledge, Community Actio

Optimization of strength and ductility in nanotwinned ultra-fine grained Ag: Twin density and grain orientations

Nanotwinned ultrafine grained Ag thick films with different twin densities and orientations have been synthesized by magnetron sputtering with a wide-range of deposition rates. The twin boundary (TB) spacings and orientations as well as the grain size for the different deposition conditions have been characterized by both synchrotron X-ray scattering and transmission electron microscopy (TEM). Structural characterization combined with uniaxial tensile tests of the free-standing films reveals a large increase in the yield strength for films deposited at high deposition rates without any accompanying change in the TB spacing – a behavior that is not reported in the literature. We find that films deposited at lower deposition rates exhibit more randomly oriented grains with a lower overall twin density (averaged over all the grains) than the more heavily twinned grains with strong 〈1 1 1〉 fiber texture in the films deposited at higher deposition rates. The TB spacing in the twinned grains, however, does not show any significant dependence on the deposition rate. The dependence of the strength and ductility on the twin density and orientations can be described by two different soft deformation modes: (1) untwinned grains and (2) nanowinned grains that are not oriented with 〈1 1 1〉 along the growth direction. The untwinned grains provide relatively low resistance to slip, and thus decreased strength, while the nanotwinned grains that are not oriented with 〈1 1 1〉 along the growth direction are softer than nanotwinned grains that are oriented with 〈1 1 1〉 along the growth direction. We have revealed that an ultrafine-grained (150–200 nm) structure consisting of a mixture of nanotwinned (∼8–12 nm spacing) and untwined grains yields the best combination of high strength and uniform tensile ductility

IMPLEMENTASI SANDI HILL UNTUK PENYANDIAN CITRA

Hill's code is one of text encoding technique. In this research, Hill's code is extended to image encoding. The image used is BMP 24 bit format. 2x2 and 3x3 matrices is used as a key. The results show that Hill's code is suitable for image whose RGB values vary highly. On the contrary, it is not suitable for less varied RGB images since its original pattern is still persisted in encrypted image. Hill's code for image encoding has also disadvantage in the case that the key matrix is not unique. However, for daily application, with good key matrix, Hill's code can be applied to encode image since it's process only deals with simple matrix operation so it become fast. Abstract in Bahasa Indonesia : Sandi Hill merupakan salah satu teknik penyandian teks. Dalam penelitian ini, pemakaian sandi Hill diperluas dari teks ke citra bertipe BMP 24 bit. Matriks yang dipakai berordo 2x2 dan 3x3. Hasil percobaan menunjukkan bahwa sandi Hill cocok untuk enkripsi citra dengan variasi nilai RGB antar piksel berdekatan yang tinggi (seperti foto), tapi tidak cocok untuk citra dengan variasi nilai RGB yang rendah (seperti gambar kartun) karena pola citra asli masih tampak dalam citra sandi. Sandi Hill juga memiliki kelemahan dalam hal tidak tunggalnya matriks kunci yang dapat dipakai. Akan tetapi untuk pemakaian biasa, dengan pemilihan matriks kunci yang baik, sandi Hill dapat dipakai untuk penyandian karena hanya melibatkan operasi matriks biasa sehingga prosesnya relatif cepat. Kata kunci: Sandi Hill, Citra, Relatif Prima

Coil optimization for electromagnetic levitation using a genetic like algorithm

he technique of electromagnetic levitation (EML) provides a means for thermally processing an electrically conductive specimen in a containerless manner. For the investigation of metallicliquids and related melting or freezing transformations, the elimination of substrate-induced nucleation affords access to much higher undercooling than otherwise attainable. With heating and levitation both arising from the currents induced by the coil, the performance of any EML system depends on controlling the balance between lifting forces and heating effects, as influenced by the levitation coil geometry. In this work, a genetic algorithm is developed and utilized to optimize the design of electromagnetic levitation coils. The optimization is targeted specifically to reduce the steady-state temperature of the stably levitated metallic specimen. Reductions in temperature of nominally 70 K relative to that obtained with the initial design are achieved through coil optimization, and the results are compared with experiments foraluminum. Additionally, the optimization method is shown to be robust, generating a small range of converged results from a variety of initial starting conditions. While our optimizationcriterion was set to achieve the lowest possible sample temperature, the method is general and can be used to optimize for other criteria as well

Hydrogen atom in a spherical well: linear approximation

We discuss the boundary effects on a quantum system by examining the problem of a hydrogen atom in a spherical well. By using an approximation method which is linear in energy we calculate the boundary corrections to the ground-state energy and wave function. We obtain the asymptotic dependence of the ground-state energy on the radius of the well.Comment: Revised version to appear in European Journal of Physic

Temperature dependence of surface reconstructions of Au on Pd(110)

Surface reconstructions of Au film on Pd(110) substrate are studied using a local Einstein approximation to quasiharmonic theory with the Sutton-Chen interatomic potential. Temperature dependent surface free energies for different coverages and surface structures are calculated. Experimentally observed transformations from $(1\times1)$ to $(1 \times 2)$ and $(1 \times 3)$ structures can be explained in the framework of this model. Also conditions for Stranski-Krastanov growth mode are found to comply with experiments. The domain of validity of the model neglecting mixing entropy is analyzed.Comment: 7 pages, REVTeX two-column format, 3 postscript figures available on request from [email protected] To appear in Phys. Rev. Letter

Crystal structure of solid Oxygen at high pressure and low temperature

Results of X-ray diffraction experiments on solid oxygen at low temperature and at pressures up to 10 GPa are presented.A careful sample preparation and annealing around 240 K allowed to obtain very good diffraction patterns in the orthorhombic delta-phase. This phase is stable at low temperature, in contrast to some recent data [Y. Akahama et al., Phys. Rev. B64, 054105 (2001)], and transforms with decreasing pressure into a monoclinic phase, which is identified as the low pressure alpha-phase. The discontinuous change of the lattice parameters, and the observed metastability of the alpha-phase increasing pressure suggest that the transition is of the first order.Comment: 4 pages with three figure