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"Failure of flow a fluid from a equipment to other equipment often happen caused by significant presure drop. To ascertain pressure ability flow of fluid in piping system necessary done calculation pressure drop earlier in engineering, because pressure drop that calculated to make base generate of pipe routing correctly is connects fron nozzle of vessel to nozzle of suction compressor."

"Penelitian ini bertujuan untuk mengetahui hubungan antara tekanan dan kecepatan pada fluida laminer yang terdapat dalam Persamaan Bernoulli serta mendesain dan membuat rancang bangun pengukuran debit fluida menggunakan metode alat tabung venturi dan orifice plate. Penelitian menggunakan data kuantitatif dengan mengambil data berupa pengukuran tekanan yang terjadi pada alat tabung venturi dan orifice plate. Sensor MPXV7002DP digunakan dalam penelitian sebagai alat ukur perbedaan tekanan yang mengeluarkan data analog sehingga harus diolah terlebih dahulu menjadi data tekanan dengan menanamkan fungsi transfer ke dalam Mikrokontroler ATmega8 sebagai media akuisisi data yang diberikan oleh Sensor MPXV7002DP. Data kuantitatif terdiri dari tekanan, debit, dan kecepatan fluida yang berbentuk grafik. Pengolahan dari data tersebut menghasilkan hubungan antara tekanan dan kecepatan yang berupa akar dari ΔP dan nilai massa jenis fluida cair (air) yang digunakan sebesar 1.000,208 kg/m3.

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The main purpose of this research is to observe the relation between pressure and velocity of a laminary fluid using Bernoulli?s formula and to design a prototype of flow measurement device using venturi tube and orifice plate. This research is conducted by gathering quantitative data such as pressure within the venturi tube and the orifice plate. The MPXV7002DP sensor which is used to measure the pressure difference has an analog output so it has to be converted into pressure data using a transfer function embedded in the ATmega8 microcontroller. The quantitative data measured are pressure, flow, fluid velocity, and are visualized using graphs. Data processing yields a relationship between pressure and velocity which is the square root of ΔP and the density of the fluid used (water) was 1.000,208 kg/m3."

"ABSTRAKBackground of the study, materials and methods: Pregnancy-induced hypertension is still an important cause of maternal and fetal morbidity and mortality. Blood pressure changes during pregnancy especially in the second- and third trimester is very important to be monitored properly during prenatal care through routine blood pressure measurement as an early detection for prevention of pregnancy-induced hypertension. Though its etiology is still unknown, based on various epidemiological studies some nutritional- and non- nutritional factors were believed to be its predisposing factors, which also should be considered during prenatal care. A study had been carried out on 45 pregnant women in all 14 RW of Kelurahan Utan Kayu Selatan, Jakarta, Indonesia. They were followed fortnightly for a 6 weeks observational period to see the relationships between magnesium concentration in serum and in erythrocyte, and blood pressures changes in their second- and/or third trimester, and to see also factors that might influence this blood pressure changes. Anthropometrics, clinical, biochemical, and dietary assessments were done to gather data needed for this observational study. The data was analyzed using statistical tests at alpha equal to 0.05 as the significance level. Results and conclusion: Hypertension based on the operational definition of this study was found in 4.4% of the subjects. Blood pressure changes in pregnancy in this study only significantly related to primigravida. The intakes of calorie, protein, saturated fatty acid, sodium and magnesium were found to be significantly different (p < 0.001) compared to its RDA, yet no significant was found with blood pressure changes/hypertension. Magnesium concentration in serum was mostly within the normal range (1.9 - 2.5 mg/dl) in 73.33% of the subjects, while magnesium concentration in erythrocyte was mostly lower than the normal range (5.7 - 7.5 mg/dl) in 73.33 % of the subjects. The concentration of magnesium in erythrocyte was significantly lower (p < 0.001) than the normal level after the 20th week of gestation. The data did not show any significant correlation on the relationship between the concentration of magnesium both in serum and in erythrocyte with blood pressure changes / hypertension."