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Fukuoka, Japan

Kurume Institute of Technology is a private university in Kurume, Fukuoka, Japan, established in 1976. Wikipedia.

Inoue T.,Kurume Institute of Technology | Monde M.,Saga University
International Journal of Heat and Mass Transfer | Year: 2012

Nucleate pool boiling heat transfer coefficients of ammonia/water mixtures were measured at a pressure of 0.4 MPa on a horizontal heated fine wire having a diameter of 0.3 mm. The nucleate pool boiling aspects were observed, after the addition of a surface-active agent to the mixtures. The effects of the concentrations of ammonia and the surface-active agent on the coefficients were clarified experimentally for the ammonia fraction range 0.1 ≦ C ≦ 0.9 and surfactant concentration range 0 ≦ C S ≦ 3500 ppm. The results showed that the coefficients were enhanced at C ≦ 0.5 and in low heat flux ranges just after the onset of boiling. It was also found that the enhancement effect caused by the surfactant disappeared at surfactant concentrations of more than 1000 or 1500 ppm. © 2012 Elsevier Ltd. All rights reserved. Source

Nakamura M.,Saitama University | Shibutani H.,Kurume Institute of Technology
Micro and Nanosystems | Year: 2015

Shockwaves are widely used in clinical practices with applications including orthopedics, traumatology and lithotripsy. Its use as a therapeutic agent has also gained attention following reports that shockwaves enhance neoangiogenesis and cell proliferation. However, shockwave-generating devices are large, and therefore not suitable for endoscopic and endovascular operations. As such, we attempted to develop a miniature shockwave-generating device using an optical fiber with a 1 mm diameter. The tip of an optical fiber was finely polished, finished with chemical agents, and coated with a titanium film by vacuum evaporation. A pulse laser was applied to the titanium film through the optical fiber, and a shockwave was induced by thermoelastic effects. Finally, the shockwave released from the tip of the fiber was visualised in a water tank with a shadowgraphic technique, and the pressure was measured. The results showed that the shockwave pressure varied depending on whether the fiber tip was polished and whether the film was cracked. In the polished fibers with less cracked films, the shockwave pressure reached 0.3 MPa when a laser with the power density of 80 GW/m2 was introduced. Given the same laser power density, the shockwave pressure decreased by approximately 40% when the fiber tip was not polished and when the film was more cracked. These results highlighted the importance of strict quality control of the surface texture and the metallic film of the optical fibers when generating strong shockwaves. © 2015 Bentham Science Publishers. Source

In this study, a combination of vertical multiple-effect diffusion solar still and tilted wick still is proposed and theoretically analyzed. The vertical multiple-effect diffusion still consists of a double glass cover and a number of vertical and parallel partitions in contact with saline-soaked wicks with narrow air gaps between the partitions. The moisture-rich layers of air in the tilted wick still and the multiple-effect still are connected so that the vapor evaporated from the wick of the tilted wick still can be transported to the humid air layer between the inner glass cover and the first partition of the multiple-effect still by natural convection. The latent heat of condensation of the vapor on the front surface of the first partition can be utilized as an added heat source for the multiple-effect still. It was found that solar energy utilized in the multiple-effect still would be adequate year-round. The total daily distillate production was predicted to be about 19.2, 16.0 and 15.9kg/m2day on the spring equinox and summer and winter solstices, respectively, when the diffusion gaps between partitions is 5mm and the number of partitions is 10. © 2015 Elsevier B.V. Source

Arunkumar T.,Anna University | Denkenberger D.,Denkenberger Inventing and Consulting | Velraj R.,Anna University | Sathyamurthy R.,Hindustan University | And 2 more authors.
Energy Conversion and Management | Year: 2015

This paper presents a modification of parabolic concentrator (PC) - solar still with continuous water circulation using a storage tank to enhance the productivity. Four modes of operation were studied experimentally: (i) PC-solar still without top cover cooling; (ii) PC-solar still with top cover cooling, PC-solar still integrated with phase change material (PCM) without top cover cooling and PC-solar still integrated PCM with cooling. The experiments were carried out for the cooling water flow rates of 40 ml/min; 50 ml/min, 60 ml/min, 80 ml/min and 100 ml/min. Diurnal variations of water temperature (Tw), ambient air temperature (Ta), top cover temperature (Toc) and production rate are measured with frequent time intervals. Water cooling was not cost effective, but adding PCM was. © 2015 Elsevier Ltd. All rights reserved. Source

Fukuda K.,Kurume Institute of Technology
Society and Animals | Year: 2016

This article describes how livestock farmers respond to moral enquiries about their means of livelihood, by referring to ethnographic data collected in the Scottish Borders. The focus is on three controversial aspects of livestock farming: welfare issues of intensive farming methods, guilt about depriving nonhuman animals of their lives for food, and the moral dilemma of breeding and rearing animals merely to be killed. There was a feeling of uneasiness among farmers about sending the animals they looked after to the slaughterhouse. This, however, was rationalized with the recognition that livestock were bred and reared to be eaten in the first place. By examining farmers' utterances, it is suggested that livestock farmers are conditioned to consider their vocation as a part of the social system, over which they have little control. © 2016 Koninklijke Brill NV, Leiden, The Netherlands. Source

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