101 research outputs found
Aplikasi M-Commerce Berbasis Android pada Toko “Fani Bags”
Bags Fani store is one bag shop. Fani Bags store sells a wide range of bags such as backpacks, travel bags, briefcases etc. However, the mechanism of buying and selling or marketing is done manually, the buyer must come to the store to buy goods from Fani Bags. Then it becomes inefficient. M-commerce (mobile commerce) is a trading system that is performed by the method of trading is done with portable media or mobile devices such as smartphones, PDAs etc. This application is based Mobile Application (Android) using java programming and MySQL as the database and PHP as webserver. M-commerce to be a solution to solve the problems on the Fani Bags store due to m-commerce and smart phones as a media liaison, customers can easily access or purchase products Fani Bags store without having to come to the store. It can be concluded using mobile commerce applications of this transaction will be carried out more easily, efficiently, and of course the wider area coverag
Visceral fat accumulation influenced blood flow velocity in hypertensive subjects
Arterial function measurements are widely used as surrogate markers of cardiovascular disease. However, it is unknown whether non-pathological factor may influence these measurements in particularly blood velocity function. The aim of current study was to investigate the relationship between visceral fat (VF) accumulation and hypertension incidence. The study evaluated the changes of blood velocity waveforms among normotensive and hypertensive subjects. One hundred twenty six individuals were classified into three groups which are lower VF, middle VF and higher VF regarding on their VF level. Resistive index (RI), velocity reflection index (VRI) and vascular elastic recoil index (VEI) were calculated from the 3 minutes assemble average of envelope waveform. The VF accumulation was higher in hypertensive than normotensive subjects. Peak systolic (S1), peak diastolic (D), VRI and VEI modulated significantly (P < 0.05) in higher VF compared to lower VF groups. RI and VRI show significantly different in hypertensive compared to normotensive groups. In conclusion, increased VF influences hypertension incidence and blood velocity regulation
Flow Velocity in Common Carotid Artery
A significant blood flow disruption as seen in cardiovascular diseases and disorders is related to hemodynamic dysfunction. Gender influences the arterial hemodynamic functions. Understanding of gender-related differences in blood flow and pressure is crucial in the prevalence and burden of cardiovascular disease. This chapter presents about characteristic profile of carotid flow velocities to extend the fundamental understanding of arterial hemodynamic functions in gender differences. Comparison of both synchronized carotid blood flow velocity and blood pressures at normodynamics state are introduced to contribute to targeted therapeutic goal based on gender. Gender-related differences in body size has influenced on arterial hemodynamics in carotid artery. Body height has influenced on systolic blood pressure, pulse pressure, wave reflection, pulse wave velocity in carotid artery. Carotid blood flow velocities are largely accounted for not only body height but also body weight. The predictors for modulating blood flow velocities were not only limited to age, but also influenced by several body compositions that largely accounted for the gender-related differences including visceral fat, muscle mass and total body fat. These data may useful to effective prevention and management of cardiovascular disease by considering the gender-difference
Decellularized bovine meniscus in morphological assessment prior to bioscaffold preparation
Decellularization is a process of tissue treatment targeting cell removal. Sonication system was developed in order to decellularize meniscus tissues. The samples were sonicated in 0.1% sodium dodecyl sulphate (SDS) for 10 hours and at 40 kHz ultrasound frequency. All the samples were structurally examined using van Gieson, Picrosirius red, Safranin-O/Fast green staining, and scanning electron microscopic (SEM) observation. Histological analysis of sonication treated-samples by van Gieson staining demonstrated complete nuclei removal compared to the control samples. The Picrosirius red and Safranin-O/Fast green staining indicate the preservation of collagen and glycosaminoglycans (GAGs) structure, respectively. In addition, the morphological observation by SEM shows the availability of micropores on the surface of decellularized sample. Consequently, the sonication decellularization treatment did not affect extracellular matrix (ECM) properties, while forming micropores on the surface of meniscus tissues. This made it possible to proceed in other fulfillment of bioscaffold preparation
Performance of force circulation cross-matrix absorber solar heater integrated with latent heat energy storage material
The utilization of thermal energy storage in the thermal absorber applications has been increasingly important especially in the application where there is a mismatch between energy demand and energy supply. This technology implies that the heat is stored during charging or discharging process through melting and freezing of the thermal energy storage material so that it can be used in the future. This paper presents the outcome of the experimental investigation on the performance of cross-matrix absorber (CMA) utilizing paraffin as the thermal energy storage material. Experiments were carried out by exposing the CMA under different artificial solar radiation (300 W/m2, 500 W/m2, 700 W/m2 and 900 W/m2) for 30 minutes followed by 30 minutes of discharging process. Based on the observation, it was found that smaller mass flow rate value of 0.005 kg/s gave the highest temperature output regardless of the intensity of solar radiation as compared to the other after 30 minutes of charging process. In terms of heat gain by the thermal absorber, it was concluded that the highest mass flow rate of 0.01 kg/s passing through the absorber lead to the higher heat gain by the CMA, hence prolonged the cooling down / discharging period as shows by the result, where case with maximum mass flow rate (0.01 kg/s) consistently contributed to the higher heat gain by the absorber. This feature is very useful in the solar thermal collector related applications such as crop drying and domestic building heating. The heat gain by the absorber is also contributed by the intensity of the solar radiation
Potential of deep seawater mariculture for economic transformation in Sabah, Malaysia
A Malaysian state of Sabah is blessed with natural deep sea water (DSW). The presence of these DSW's offers a potential for OTEC power plant to be installed and operated using warm surface sea water (SSW) as a heat source and the cold DSW as a heat sink. In the operation, the power plant may need to spend a considerable amount of power to pump up the DSW. The cold DSW, after serving its function as coolant to the condenser of the power plant, apparently appears as cold waste-water and may pose a disposal problem to the environment. However, being very rich in nutrients, the used DSW instead create another valuable potential for secondary commercial activities in industries like mariculture, pharmaceutical, cosmetic, medicinal, temperate crop farming, district cooling, etc. all of which, if fully developed could offer a real economic transformation for the state of Sabah, as that experience by the Japanese Kumejima of Okinawa prefecture. This paper focuses on the discussion on the potential of DSW in enhancing the development of Sabah mariculture industry, party contribution towards accelerating the socioeconomic transformation of the state and the people
Development Of Portable Air Conditioning Using Peltier Effect For Small Area Uses
Air conditioning is the science of controlling dependent parameters such as human comfort,temperature,relative humidity and air quality.This paper presented the development of a portable air conditioning using Peltier Effect in the small area uses using Boost converter as current control devices.A Boost converter has been designed in order to supply a sufficient current that required to the Peltier module to operate.An Arduino UNO board is used to supply the boost converter with pulse width modulation to ensure the boost converter is able to boost the current up until required range of operation. The circuit then simulated using Proteus PCB Design and Simulation to validate the output voltage and current. Based on our findings,the boost converter is operated as predicted in term of a step up the current and voltage. The temperature for cold side are observed reach 23.6 °C in 300s at less than 1A current.This is due to Peltier module is a current control device where when the current increases,the efficiency decreases while maximum cooling occurs at some specific current.If we increased the output current,the cold side is observed to reach 23.6 °C in less than 240s.Based on our findings,this portable air
conditioning is useful to cool a small area (20inch x 20inch) with ambient temperature during full load is consistently recorded at 23.6°C
Development of diagnostic system for atherosclerosis based on intrinsic fluorescence using multispectral imaging
Composition of atherosclerotic arterial walls is rich in lipids such as cholesterol; unlike normal arterial walls. In this study, we aimed to utilize this difference to diagnose atherosclerosis via multispectral imaging, which allows for identification of fluorescence originating from the substance in the arterial wall. The inner surface of extracted arteries (rabbit abdominal aorta, human coronary aorta) was illuminated by an excitation light and multispectral fluorescence images were obtained. The fluorescence spectra in atherosclerotic sites were shown to be different from those in normal sites. A ratio of fluorescence intensity at a wavelength of two significant differences was then calculated for each pixel and ratio images were reconstructed. As a result, we succeeded in “disease mapping”, by which atherosclerotic sites can be discriminated from normal sites. The differences in fluorescence spectra may be attributed to the differences in fluorophores contained in the intima/media of the artery
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