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Low-power laser irradiation on oral tissue is reported to have healing effects caused by accelerating cell growth. However, the effects of high-power laser irradiation on cell growth are unknown. To investigate the effects of high-power laser irradiation on oral tissue, we examined the cell growth of fibroblasts (Balb/3T3(clone)A31), osteoblasts (MC3T3-E1) and epithelial cells (normal human gingival keratinocytes) after laser irradiation in vitro using MTT assay. Cells were cultured during 1 day following laser irradiation once for 30, 60, 90, 120 and 180 seconds with a diode laser (830±10nm, GaAlAs diode, continuous wave, 400mW or 800mW). Non-irradiation cells were used as the control group. As a result, fibroblasts and epithelial cells showed good cell growth under the irradiation of 3.7mW/cm^2 for 90seconds. The irradiation of 3.7mW/cm^2 for 90seconds and of 6.7mW/cm^2 for 60seconds accelerated the cell growth of osteoblasts. These results suggest that laser irradiation of 3.7mW/cm^2 for 90seconds accelerates cell growth. In addition, power density (mW/cm^2) and irradiation time (seconds) are more closely related to cell growth in vitro than to energy density (J/cm^2).

Low-power laser irradiation on oral tissue is reported to have healing effects caused by accelerating cell growth. However, the effects of high-power laser irradiation on cell growth are unknown. To investigate the effects of high-power laser irradiation on oral tissue, we examined the cell growth of fibroblasts (Balb/3T3(clone)A31), osteoblasts (MC3T3-E1) and epithelial cells (normal human gingival keratinocytes) after laser irradiation in vitro using MTT assay. Cells were cultured during 1 day following laser irradiation once for 30, 60, 90, 120 and 180 seconds with a diode laser (830±10nm, GaAlAs diode, continuous wave, 400mW or 800mW). Non-irradiation cells were used as the control group. As a result, fibroblasts and epithelial cells showed good cell growth under the irradiation of 3.7mW/cm^2 for 90seconds. The irradiation of 3.7mW/cm^2 for 90seconds and of 6.7mW/cm^2 for 60seconds accelerated the cell growth of osteoblasts. These results suggest that laser irradiation of 3.7mW/cm^2 for 90seconds accelerates cell growth. In addition, power density (mW/cm^2) and irradiation time (seconds) are more closely related to cell growth in vitro than to energy density (J/cm^2).

The environmental tolerance should not exceed the global self-purification capacity. The industrial revolution that began with the invention of the steam engine is the large scale of energy consumption industry, and creates out electricity and car civilized society. When it tries to arrange the energy resource with firewood, coal, petroleum, natural gas, methane hydrate, the hydrogen of the energy efficiency is better than that of the carbon in the direction of the decarbonization element, decarbonization element will show the new industry society.

The environmental tolerance should not exceed the global self-purification capacity. The industrial revolution that began with the invention of the steam engine is the large scale of energy consumption industry, and creates out electricity and car civilized society. When it tries to arrange the energy resource with firewood, coal, petroleum, natural gas, methane hydrate, the hydrogen of the energy efficiency is better than that of the carbon in the direction of the decarbonization element, decarbonization element will show the new industry society.

[Abstract] HEMS is recognized as the one of most effective system for energy saving among the people. But this system has the problems for being influenced into the ordinary people. The problem has following three points. 1. This system is mounted on the wall of the house. Then it is so hard that people can monitor at various points. 2. Initial cost is very expensive. 3. People has less willing for saving energy at their home. Then we've tried to introduce sensor network technology into HEMS. Sensor network technology can overcome above three problems because it consists of cheep wireless sensor node and also can be used for providing safety and security and health of their daily life. But the power source of the sensor network node is provided by AC cable or chemical battery at present. It prevents the location freedom and occurs battery exchange procedure. Then we've examined to introduce the energy harvesting technology into the power source of the sensor network nodes. In this paper we've calculated the consuming power amount of the sensor network node account for various step HEMS and assuming the harvesting energy from the life environment. After that we've performed the experiment for monitoring HEMS under using only solar energy. Finally we've concluded the validity of our way for applying to more rich HEMS (Control HEMS).

[Abstract] HEMS is recognized as the one of most effective system for energy saving among the people. But this system has the problems for being influenced into the ordinary people. The problem has following three points. 1. This system is mounted on the wall of the house. Then it is so hard that people can monitor at various points. 2. Initial cost is very expensive. 3. People has less willing for saving energy at their home. Then we've tried to introduce sensor network technology into HEMS. Sensor network technology can overcome above three problems because it consists of cheep wireless sensor node and also can be used for providing safety and security and health of their daily life. But the power source of the sensor network node is provided by AC cable or chemical battery at present. It prevents the location freedom and occurs battery exchange procedure. Then we've examined to introduce the energy harvesting technology into the power source of the sensor network nodes. In this paper we've calculated the consuming power amount of the sensor network node account for various step HEMS and assuming the harvesting energy from the life environment. After that we've performed the experiment for monitoring HEMS under using only solar energy. Finally we've concluded the validity of our way for applying to more rich HEMS (Control HEMS).

Global warming phenomenon has been distinct remarkably in 1980's. People have been active in search of the wealth. Population keeps increasing every year in the earth. The industry society is prosperous, and the energy consumption keeps increasing. With the rise of the fossil energy use, the carbon dioxide which is greenhouse effect gas tends to increase. It is examined in order to maintain "sustainable development" which agrees by the relation between developed country and developing country. What kind of solution there is it maintains "sustainable development" it agreed by the relation between developed country and the developing country?

Global warming phenomenon has been distinct remarkably in 1980's. People have been active in search of the wealth. Population keeps increasing every year in the earth. The industry society is prosperous, and the energy consumption keeps increasing. With the rise of the fossil energy use, the carbon dioxide which is greenhouse effect gas tends to increase. It is examined in order to maintain "sustainable development" which agrees by the relation between developed country and developing country. What kind of solution there is it maintains "sustainable development" it agreed by the relation between developed country and the developing country?

The new technology characterized with systems of self-heat recycling and wall rotating has been originally proposed through the combinational technologies of solution and/or emulsion combustion synthesis, which performs not only fine powders production but also highly efficient resource utilization with the aid of water, resulting in somewhat system-pressure-controlled energy saving before/after combustion propagation.

The new technology characterized with systems of self-heat recycling and wall rotating has been originally proposed through the combinational technologies of solution and/or emulsion combustion synthesis, which performs not only fine powders production but also highly efficient resource utilization with the aid of water, resulting in somewhat system-pressure-controlled energy saving before/after combustion propagation.