Abstract: The plant cultivation device which workability of cutting of the leaves of the plant at the base portion thereof from the root portion of the plants. The plant cultivation device includes a culture medium holding portion in a cylindrical shape, accommodating and holding a seedling culture medium, arranged in the through-holes of the fluid passage member and absorbing the culture fluid into the seedling culture medium and a leaf supporting portion formed in a cylindrical shape, arranged at an upper side of the culture medium holding portion and supporting the leaves from around the leaves which are cultivated from the seeds. The culture medium holding portion and the leaf supporting portion are formed such that a cutting tool, used for separation between the seedling culture medium and the leaves, can be insertable from outside into a bordering portion between the culture medium holding portion and the leaf supporting portion.

Abstract: A plant cultivation device includes a first plate portion formed in a plate shape extending in a transfer direction from the fluid passage member and a second plate portion formed in a plate shape extending in a direction opposite to the transfer direction from the fluid passage member. When the distance between the two neighboring fluid passage members becomes large, the second plate portion provided on the preceding fluid passage member and the first plate portion provided on the following fluid passage member are separated from each other with respect to the transfer direction. The plant cultivation device saves space particularly in an early raising stage of the leaves, keeping protection of the cultivated leaves not to be drooped down.

Abstract: A method for raising leaf-and-stem vegetables and a light source device used in the method, which can make production cost of leaf-and-stem vegetables reduced and commercial value thereof enhanced by irradiating parts of leaf-and-stem vegetable with a light optimum therefor. The method for raising leaf-and-stem vegetables by irradiating the vegetables with light, includes a stem growth-inhibiting light source irradiating tops of the stems with light having a blue component light at high ratio, which inhibits the growth of stems, at least during an initial growth period when the stems and leaves become distinguishable from each other.

Abstract: The air emission device for growing plants includes a plurality of air emission units for respectively emitting an air flow onto the new leaves growing on a tip of a stem of each plant that has one stem. The transpiration effect on the leaves and suctioning of water and nutrition from the roots of the plants can be promoted. Thus, wilting of leaves can be prevented and the tip burn due to insufficient calcium can be avoided. Provision of the air emission units are effectively arranged to evenly or uniformly supply air onto the new leaves of the each plant.

Abstract: The plant cultivation device which workability of cutting of the leaves of the plant at the base portion thereof from the root portion of the plants. The plant cultivation device includes a culture medium holding portion in a cylindrical shape, accommodating and holding a seedling culture medium, arranged in the through-holes of the fluid passage member and absorbing the culture fluid into the seedling culture medium and a leaf supporting portion formed in a cylindrical shape, arranged at an upper side of the culture medium holding portion and supporting the leaves from around the leaves which are cultivated from the seeds. The culture medium holding portion and the leaf supporting portion are formed such that a cutting tool, used for separation between the seedling culture medium and the leaves, can be insertable from outside into a bordering portion between the culture medium holding portion and the leaf supporting portion.

Abstract: A plant cultivation device includes a first plate portion formed in a plate shape extending in a transfer direction from the fluid passage member and a second plate portion formed in a plate shape extending in a direction opposite to the transfer direction from the fluid passage member. When the distance between the two neighboring fluid passage members becomes large, the second plate portion provided on the preceding fluid passage member and the first plate portion provided on the following fluid passage member are separated from each other with respect to the transfer direction. The plant cultivation device saves space particularly in an early raising stage of the leaves, keeping protection of the cultivated leaves not to be drooped down.

Abstract: The air emission device for growing plants includes a plurality of air emission units for respectively emitting an air flow onto the new leaves growing on a tip of a stem of each plant that has one stem. The transpiration effect on the leaves and suctioning of water and nutrition from the roots of the plants can be promoted. Thus, wilting of leaves can be prevented and the tip burn due to insufficient calcium can be avoided. Provision of the air emission units are effectively arranged to evenly or uniformly supply air onto the new leaves of the each plant.

Abstract: A method for raising leaf-and-stem vegetables and a light source device used in the method, which can make production cost of leaf-and-stem vegetables reduced and commercial value thereof enhanced by irradiating parts of leaf-and-stem vegetable with a light optimum therefor. The method for raising leaf-and-stem vegetables by irradiating the vegetables with light, includes a stem growth-inhibiting light source irradiating tops of the stems with light having a blue component light at high ratio, which inhibits the growth of stems, at least during an initial growth period when the stems and leaves become distinguishable from each other.

Abstract: It is intended to provide a novel drug which exhibits an excellent effect of preventing HIV infection in transfusing blood and using a blood preparation. This object can be achieved by a preventive for HIV infection in transfusing blood and using a blood prepartion characterized by containing a compound having an antagonism to a CC chemokine receptor (preferably antagonism to CCR5 and/or CCR2).

Abstract: A diversity receiver having a pair of receiving circuits, which is capable of disconnecting a faulty receiving circuit from its operation for preventing a communication quality from being degraded due to mis-selection of output signal of the faulty receiving circuit in a case of signal level being received is too low to discriminate between output signals of the faulty receiving circuit and the normal receiving circuit, is provided. The diversity receiver includes a first and second error rate accumulation circuits, each is coupled with corresponding receiver circuit, to accumulate error rate of each receiver circuit in a timing generated by a timing generator circuit. In combination of six judge circuits, first judge circuit to sixth judge circuits, and input of error accumulation value of each receiving circuit, it is judged whether or not there exist a fault in a receiving circuit and which receiving circuit is faulty.