Abstract: A hot-water supply apparatus is an apparatus which has a primary heat exchanger absorbing sensible heat of combustion exhaust and a secondary heat exchanger absorbing latent heat of the combustion exhaust, and improves a freezing prevention function of the hot-water supply apparatus at a cold period. Further, this apparatus has a temperature detection means (temperature sensors) which detects a freezing prevention temperature, a combustion means (a burner group) which supplies combustion exhaust generated by combustion to the primary and secondary heat exchangers, an air supply means which supplies air to the combustion means, and a control means (a control unit) which makes the combustion means burn and drives the air supply means based on a detected temperature of the temperature detection means.

Abstract: A culture chamber which cultivates a culture object by using a culture liquid has a culture space part which houses the culture object together with the culture liquid, an introducing part (an introducing port) which introduces the culture liquid into the culture space part, a discharging part (a discharging port) which discharges the culture liquid from the culture space part, and a flow arrangement part (a vertical wall, a small space part). The flow arrangement part is formed in a side of the introducing part of the culture space part, and causes a liquid flow, which reaches to the discharging part, to the culture liquid introduced into the culture space part from the introducing part by diffusing from inner wall surfaces of the culture space part toward a direction which intersects a virtual line connecting the introducing part and the discharging part.

Abstract: A hot-water supply apparatus is an apparatus which has a primary heat exchanger absorbing sensible heat of combustion exhaust and a secondary heat exchanger absorbing latent heat of the combustion exhaust, and improves a freezing prevention function of the hot-water supply apparatus at a cold period. Further, this apparatus has a temperature detection means (temperature sensors) which detects a freezing prevention temperature, a combustion means (a burner group) which supplies combustion exhaust generated by combustion to the primary and secondary heat exchangers, an air supply means which supplies air to the combustion means, and a control means (a control unit) which makes the combustion means burn and drives the air supply means based on a detected temperature of the temperature detection means.

Abstract: The invention provides a cell/tissue culture apparatus for applying a physical stimulation necessary for the proliferation and growth of a cell or tissue to a material to be cultivated serving as a cell or tissue to be cultivated, thereby realizing the culture as desired and protecting the material to be cultivated from contamination of various bacteria and so forth.

Abstract: A cell/tissue culture apparatus can give a physical stimulation necessary for proliferation and growth to a cultured object which is a cell or tissue to be cultured. The cell/tissue culture apparatus has a chamber (a culture chamber 4) which accommodates a cultured object (a matrix 8) and supplies a culture fluid (6), a pressing means (a pressing plate 10, 11) which is movably arranged in the chamber and gives a physical stimulation due to a press to the cultured object by movement thereof, and a driving means (a pressure unit 22, an electromagnet unit 32) which gives a driving force to the pressing means for applying the physical stimulation to the cultured object from an outside of the chamber in a state out of contact with the pressing means.

Abstract: A cell/tissue culture apparatus is suitable for a culture of a cultivated object of a cell or tissue adapted for a prescribed portion of a living body of a breast and so on, a culture chamber (18, a culture vessel 10) which accommodates a cell or tissue to be cultivated and also makes a culture fluid (34) circulate is formed by a flexible material (flexible films 12, 14), and the culture chamber is immersed in a fluid (water 8). A pressure or an oscillation is given to the culture chamber installed in the fluid, and a physical stimulation due to the pressure from the fluid or the oscillation of the fluid is given to a cell or tissue under a culture.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: There is provided a water heater unit realizing antifreezing of a water tube and the like of a heat exchanger without providing a backwind stopper on an exhaust tube. The water heater unit comprises a heat exchanger for heating water by a combustion heat of combustion means, water temperature sensors for detecting the temperatures of the water tube connected to the heat exchanger and an air supply fan for supplying air to a combustion chamber in which the combustion means is installed. When temperatures detected by the temperature sensors reach a temperature at which freezing of the heat exchanger is expected, the air supply fan is driven to supply air to the combustion chamber and the air is exhausted toward an exhaust port, thereby effecting heat exchange and antifreezing of the water tube.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: There is provided a water heater unit realizing antifreezing of a water tube and the like of a heat exchanger without providing a backwind stopper on an exhaust tube. The water heater unit comprises a heat exchanger for heating water by a combustion heat of combustion means, water temperature sensors for detecting the temperatures of the water tube connected to the heat exchanger and an air supply fan for supplying air to a combustion chamber in which the combustion means is installed. When temperatures detected by the temperature sensors reach a temperature at which freezing of the heat exchanger is expected, the air supply fan is driven to supply air to the combustion chamber and the air is exhausted toward an exhaust port, thereby effecting heat exchange and antifreezing of the water tube.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: The present invention provides a high velocity current producing apparatus in a bathtub capable of producing high velocity current having an appropriate pressure in a bathtub with a simple construction, and capable of enhancing operability, functional property and safety without narrowing the space in the bathroom. The high velocity current producing apparatus in a bathtub produces the high velocity current in the bathtub by connecting a pump to a circulation passage for circulating hot water in a bathtub to components provided outside the bathtub and the hot water sucked from the bathtub to the circulation passage is pressurized and supplied to the bathtub, wherein the high velocity current is used for massaging a body of a bather.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: The invention provides a method of and an apparatus for cultivating a cell or tissue capable of preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture. The method of and the apparatus for cultivating a cell or tissue comprise installing a culture position (culture chamber) under an environment that is arbitrarily controlled such as an environment mimicking the living body, supplying a culture medium to the cell or tissue while the cell or tissue is held at the culture position, and cultivating the cell or tissue at the culture position that is under the ideal environment, thereby preventing the cell or tissue from being contaminated and realizing an efficient in vitro culture.

Abstract: The invention provides a water jet generating a system capable of applying water jet massage while a bather takes a bath by generating water jet at an appropriate pressure. More specifically, water is sucked in from a water source or a bathtub by a pump, and water jet is spouted out at an appropriate pressure through water jet spouting means or a nozzle so as to generate water jet in the bathtub. The water jet can beat at the surface of the body of the bather, and a complex stimuli caused by thermal effect of water or hot water and pressure of water jet and friction occurring between the water jet and the skin of the bather can be applied to the skin of the bather, attaining massaging effects of the water jet with ease.

Abstract: An air conditioning unit is capable of preventing a liquid absorbent from crystallizing, thereby enhancing reliability of the operation thereof. A given amount of refrigerant is supplied to dilute the liquid absorbent when the air conditioning unit stops in operation, and it is circulated in lines and components of the air conditioning unit, thereby cleansing the liquid absorbent remaining in the components or lines, and the liquid absorbent is returned to the liquid tank, so that the liquid absorbent is prevented from crystallizing, whereby reliability of the operation is enhanced.

Abstract: A water jet massaging system is capable of applying water jet massage while a bather is taking a bath by producing a water jet at an appropriate pressure, and having enhanced operability by preventing sticking of a water intake and a nozzle to the body of the bather. More specifically, water is sucked in from a water source by a pump, and water jet at an appropriate pressure is injected through a nozzle so as to beat at the surface of the body of the bather, attaining massaging effects of water jet with ease. Further, the water intake is provided with passages for water flow to prevent blockage of water flow, and the nozzle is provided with an inclined surface on the side opposite the body to slow down velocity of water flow, preventing a sticking phenomenon.