Daniel Santoso

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Imperata cylindrica grasslands are widely believed to indicate poor soil fertility. Soil fertility improvement may have to be an important component of a reclamation strategy. Data for Sumatra, Indonesia indicate, however, that Imperata occurs on a broad range of soil types and is not confined to the poorest soils. A direct role of Imperata in soil(More)
Currently, fossil fuels as main energy source to fulfill world's energy demand is depleting fast. Their waste products are also causing global environment problems. One of the solutions is to replace the existing fossil fuel energy systems by the hydrogen energy system. This paper presents a small electrical energy generator based on solar-hydrogen fuel(More)
Twist is important parameter in specifying a yarn for many textile applications. A prominent textile industry currently employs obsolete yarn twist testers in its quality control laboratory to check yarn performance. However, the twist mechanism part is mostly intact. The purpose of the research is to restore and improve the function of the old yarn twist(More)
Improvements in transportation technology combined with the growth and human population mobility have brought spreading rate of infectious diseases to new level. Fever is most common indicator for many infectious diseases-particularly influenza- and can be easily screened using infrared thermography. However, most of thermography systems are expensive and(More)
Haemorrhoidal artery ligation (HAL) is a novel noninvasive surgical treatment for haemorrhoids. The procedure entails precise identification of the superior rectal arteries supplying haemorrhoids using a Doppler transducer mounted on a proctoscope and a Doppler signal processor. To perform HAL the surgeon at Kasih Ibu General Hospital used medical device(More)
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