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OALib Journal期刊

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匹配条件: “Alexis T. Belonio” ,找到相关结果约119472条。
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Development of an Appropriate Rice-Based Biomass Gasifier as Source of Power for Farm Use  [PDF]
Alexis T. Belonio, Manuel Jose C. Regalado, Phoebe R. Castillo
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1105054
Abstract:
An appropriate rice-based (ARB) biomass gasifier was designed and de-veloped for farmers’ use. The gasification properties of rice-based biomass were determined before doing the design. The gasifier was built using salvage petrol drums, metal bars and concrete as primary construction materials. It has a 30 cm-diameter reactor insulated with refractory cement. A 10 cm-o cross flow scrubber with 30 cm-thick packed-bed filter is used for conditioning the gas. The gas is converted to mechanical power with the use of a four-stroke-cycle, spark ignition engine commonly used by farmers. The gasifier was tested and underwent series of modifications and improvements. Performance test and evaluation showed that the gasifier performs satisfactorily as per design. Raw rice husk was found to have greater advantage as fuel for the gasifier than rice straw. It can drive sta-tionary agricultural machines such as a 4-in. pump, a 30-cm biomass chip-per, and a 20-cm rubber creeping mill. It can also power a 3-kWe AC gen-erator for lighting and a 60-Amp DC alternator for charging batteries. The entire system can be built at a cost of P90,000.00 (USD1 = PHP50) using local materials and skills. Analysis showed that the operating cost of the gasifier is only P94.15 per day. A savings o P244.94 per day can be derived against the use of purely gasoline fuel for the engine. Payback period is 1.22 years.
Design and Performance Evaluation of a Variable-Feed Hydrous-Bioethanol Fuel Injector for Retrofitted Engine  [PDF]
Alexis T. Belonio, Manuel Jose C. Regalado, Marvelin L. Rafael, Katherine C. Villota, Phoebe R. Castillo
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105164
Abstract:
A variable-feed hydrous-bioethanol fuel injector (VFHBFI) for retrofitted en-gine was designed and evaluated to provide a technology that would allow spark-ignition engines commonly used by farmers be fuelled with hydrous bio-ethanol from nipa. With this technology, farmers can make use of their farm resources to fuel their engines making them less dependent on imported fossil fuel. The VFHBFI consists of the following components: 1) Fuel tank; 2) DC pump; 3) Fuel line; 4) PWM switch; 5) Battery; and 6) Fuel injector. The tank is made of a stainless-steel cylinder with 2-liter capacity of hydrous bioethanol (95%). The DC pump that feeds alcohol fuel is a diaphragm-type operating on a 12-volt line. It is ran by a 16-AH gel-type battery and its pumpingrate is regulated by a 12-volt, 0.8-Amp PWM switch. The position of the switch and of the battery is dictated by the kind of machine to be powered. The fuel line that delivers the alcohol to the engine is made of an alcohol-resistant plastic hose. The VFHBFI was evaluated using a 6.5-hp spark-ignition Kenbo engine retrofitted to utilize hydrous bioethanol as fuel. The fuel feed rate was calibrated with the PWM switch setting. A micro-tiller and a pow-er-tiller-operated hauler were used in the evaluation. The forward speed of the power-tiller-operated hauler was also evaluated at varying load. Results showed that the VFHBFI performs satisfactorily as per design. The fuel feeding rate of the injector behaves linearly with the PWM switch setting. It was observed that smooth engine speed is achieved at medium to high PWM switch setting. Using the VFHBFI, a retrofitted-engine-driven micro-tiller successfully tilled a 1500 m2 farm making it ready for planting in 2 to 3 passes. The average amount of fuel consumed in tilling was 2.0 liters per hour, which is double than when using pure gasoline as fuel. Also using the VFHBFI, a retrofitted-engine-driven power-tiller hauler consumed an average of 1.6 liters of alcohol per km on a rough road. The forward speed of the hauler was observed declining with the increase in load. The socio-economic advantage of the technology is also discussed.
Einthoven: El hombre y su invento
Lama T,Alexis;
Revista médica de Chile , 2004, DOI: 10.4067/S0034-98872004000200018
Abstract: einthoven, a dutch physician, was awarded the nobel prize for physiology or medicine for his discovery of the mechanism of the electrocardiogram. he was born on may 21, 1860, in semarang, on the island of java. in 1878 entered the university of utrecht in the netherlands, as a medical student, where he also became a keen sportsman. in 1885, he was appointed professor of physiology at the university of leiden, where he began to work using first a capillary electrometer. later, einthoven invented a new galvanometer to generate electrocardiograms using a fine quartz string coated in silver and published his findings in 1901 and 1903. einthoven is remembered by most of his colleagues and clinical peers as a very modest person who was hospitable and honest. he died at the age of sixty seven (rev méd chile 2004; 132: 260-4)
El médico y los conflictos de intereses
Lama T,Alexis;
Revista médica de Chile , 2003, DOI: 10.4067/S0034-98872003001200015
Abstract: conflicts of interest are frequent in medical practice. they occur when a secondary interest unduly influences professional medical judgment, over and above the patients' benefit, his first real interest. most of these secondary interests come from particular businesses of the physicians or their relationships with the industry. they may become a threat to the confidence that is established in the patient-physician relationship or to the medical profession as a whole. these conflicts of interest vary in types and magnitude and are not recognized by physicians on most occasions. solutions are inevitably related to the honesty and integrity of each physician. due to the absence of specific national ethical references, it is necessary to discuss the issue and conclude recommendations that guide interns, residents, clinicians, researchers, medical educators, medical and scientific associations to resolve these types of conflicts (rev méd chile 2003; 131: 1463-8).
Einthoven: El hombre y su invento Einthoven: the man and his invention
Alexis Lama T
Revista médica de Chile , 2004,
Abstract: Einthoven, a Dutch physician, was awarded the Nobel Prize for Physiology or Medicine for his discovery of the mechanism of the electrocardiogram. He was born on May 21, 1860, in Semarang, on the island of Java. In 1878 entered the University of Utrecht in the Netherlands, as a medical student, where he also became a keen sportsman. In 1885, he was appointed Professor of Physiology at the University of Leiden, where he began to work using first a capillary electrometer. Later, Einthoven invented a new galvanometer to generate electrocardiograms using a fine quartz string coated in silver and published his findings in 1901 and 1903. Einthoven is remembered by most of his colleagues and clinical peers as a very modest person who was hospitable and honest. He died at the age of sixty seven (Rev Méd Chile 2004; 132: 260-4)
Precaución con el uso de estatinas en los ancianos Caution about the use of statins in elderly individuals
Alexis Lama T.
Revista médica de Chile , 2003,
Abstract:
El colesterol es inocente Cholesterol is innocent
Alexis Lama T
Revista médica de Chile , 2008,
Abstract:
Conflictos de intereses: Una propuesta académica Conflicts of interest: An academic proposal
Alexis Lama T
Revista médica de Chile , 2006,
Abstract:
Eustanasia y derecho a morir a morir Euthanasia and the right to die
Alexis Lama T
Revista médica de Chile , 2006,
Abstract:
Jugo de pomelo y drogas Grapefruit juice interaction with drugs
Alexis Lama T
Revista médica de Chile , 2006,
Abstract:
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