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

Epitaxy of Fe3O4 on Si(001) by pulsed laser deposition using a TiN/MgO buffer layer

Epitaxy of oxide materials on silicon (Si) substrates is of great interest for future functional devices using the large variety of physical properties of the oxides as ferroelectricity, ferromagnetism, or superconductivity. Recently, materials with high spin polarization of the charge carriers have become interesting for semiconductor-oxide hybrid devices in spin electronics. Here, we report on pulsed laser deposition of magnetite (Fe3O4) on Si(001) substrates cleaned by an in situ laser beam high temperature treatment. After depositing a double buffer layer of titanium nitride (TiN) and magnesium oxide (MgO), a high quality epitaxial magnetite layer can be grown as verified by RHEED intensity oscillations and high resolution x-ray diffraction.Comment: submitte

Permafrost hydrology in changing climatic conditions: seasonal variability of stable isotope composition in rivers in discontinuous permafrost

Role of changing climatic conditions on permafrost degradation and hydrology was investigated in the transition zone between the tundra and forest ecotones at the boundary of continuous and discontinuous permafrost of the lower Yenisei River. Three watersheds of various sizes were chosen to represent the characteristics of the regional landscape conditions. Samples of river flow, precipitation, snow cover, and permafrost ground ice were collected over the watersheds to determine isotopic composition of potential sources of water in a river flow over a two year period. Increases in air temperature over the last forty years have resulted in permafrost degradation and a decrease in the seasonal frost which is evident from soil temperature measurements, permafrost and active-layer monitoring, and analysis of satellite imagery. The lowering of the permafrost table has led to an increased storage capacity of permafrost affected soils and a higher contribution of ground water to river discharge during winter months. A progressive decrease in the thickness of the layer of seasonal freezing allows more water storage and pathways for water during the winter low period making winter discharge dependent on the timing and amount of late summer precipitation. There is a substantial seasonal variability of stable isotopic composition of river flow. Spring flooding corresponds to the isotopic composition of snow cover prior to the snowmelt. Isotopic composition of river flow during the summer period follows the variability of precipitation in smaller creeks, while the water flow of larger watersheds is influenced by the secondary evaporation of water temporarily stored in thermokarst lakes and bogs. Late summer precipitation determines the isotopic composition of texture ice within the active layer in tundra landscapes and the seasonal freezing layer in forested landscapes as well as the composition of the water flow during winter months

Magnetic and structural properties of GeMn films: precipitation of intermetallic nanomagnets

We present a comprehensive study relating the nanostructure of Ge_0.95Mn_0.05 films to their magnetic properties. The formation of ferromagnetic nanometer sized inclusions in a defect free Ge matrix fabricated by low temperature molecular beam epitaxy is observed down to substrate temperatures T_S as low as 70 deg. Celsius. A combined transmission electron microscopy (TEM) and electron energy-loss spectroscopy (EELS) analysis of the films identifies the inclusions as precipitates of the ferromagnetic compound Mn_5Ge_3. The volume and amount of these precipitates decreases with decreasing T_S. Magnetometry of the films containing precipitates reveals distinct temperature ranges: Between the characteristic ferromagnetic transition temperature of Mn_5Ge_3 at approximately room temperature and a lower, T_S dependent blocking temperature T_B the magnetic properties are dominated by superparamagnetism of the Mn_5Ge_3 precipitates. Below T_B, the magnetic signature of ferromagnetic precipitates with blocked magnetic moments is observed. At the lowest temperatures, the films show features characteristic for a metastable state.Comment: accepted for publication in Phys. Rev. B 74 (01.12.2006). High resolution images ibide