摘要:
An axial flow fluid apparatus axially provided with a plurality of blade rows having a plurality of blades arranged around a shaft is provided. A fluid passage for jetting a fluid to a downstream velocity defect region resulting from a blade is formed in at least one of blades constituting a blade row installed on the upstream side of the plurality of blade rows so as to lead from a positive pressure surface to a negative pressure surface or a trailing edge.
摘要:
An axial flow fluid device in which blade rows having radially-arranged blades are provided in a flow passage of a fluid (Y). The axial flow fluid device includes a turbulent flow eliminating device for eliminating turbulent flow components (Y1 to Y4) in the fluid (Y) supplied to the blade rows. The axial flow fluid device reduces a broadband noise component out of components of noise generated by interference between the fluid and the blades.
摘要:
A fan of an aircraft engine is provided with a rotating fan rotor for feeding air aftward as a spiral flow and a stator vane for rectifying the spiral flow to be an axial flow. The fan stator vane is provided with a hub end portion extending radially relative to a rotating axis of the fan rotor and a tip end portion leaning toward a suction side. Leading edges of the hub end portion and the tip end portion have sweepback angles of from 27 degrees to 33 degrees relative to a radial direction defined by the rotating axis.
摘要:
A fan of an aircraft engine is provided with a rotating fan rotor for feeding air aftward as a spiral flow and a stator vane for rectifying the spiral flow to be an axial flow. The fan stator vane is provided with a hub end portion extending radially relative to a rotating axis of the fan rotor and a tip end portion leaning toward a suction side. Leading edges of the hub end portion and the tip end portion have sweepback angles of from 27 degrees to 33 degrees relative to a radial direction defined by the rotating axis.
摘要:
The present invention relates to an anthranilic acid derivative expressed by the following formula (1) or the following formula (2), or its pharmacologically permissible salt or solvate.
摘要:
Novel benzene derivatives of the formula (I) shown below, pharmacological salts thereof, pharmacological solvates of the above-mentioned benzene derivatives and salts, pharmaceutical compositions including, as active ingredients, the above-mentioned compounds, and especially, prophylactic or therapeutic medicines for allergic diseases. ##STR1## wherein R.sup.1 =H, C.sub.1 -C.sub.12 cyclic or straight or branched chain alkyl group (which may be substituted by one or more C.sub.6 -C.sub.10 aryloxy groups), C.sub.7 -C.sub.12 aralkyl group (of which the aryl group may be substituted one or more of halogen, methyl and methoxy, or C.sub.3 -C.sub.10 alkenyl which may be substituted by one or more phenyl groups; A=O, S or CH.sub.2 group, B=CO or CZ.sub.2 CO group (Z=H or F), R.sup.2 =H or C.sub.1 -C.sub.4 alkyl group, X=halogen or methyl group, and Y=H, NO.sub.2 or CN group.
摘要:
A slot machine displays on a display a unit game in which arranged symbols are rearranged. When a predetermined condition is satisfied, the slot machine displays on the display a free game that is a special game. The slot machine also changes a game sound that has been emitted into a different game sound when a predetermined condition is satisfied in the free game.
摘要:
A feature parameter candidate generation apparatus has a storage unit that stores the values of feature parameters extracted from each of samples, an index value calculation unit that calculates an index value, which is obtained by normalizing the number of the kinds of the values of feature parameters by the number of the samples, for each of the feature parameters, an evaluation object selection unit that selects combinations of feature parameters which are objects to be evaluated, an evaluation unit that evaluates whether the uniformity of a frequency distribution of index values of the individual feature parameters for combinations of feature parameters selected as the objects to be evaluated satisfies a predetermined criterion, and a candidate determination unit that determines, as feature parameter candidates to be given to the model generation device, a combination of feature parameters that is evaluated to satisfy the predetermined criterion.
摘要:
In the invention, stator blades are arranged in such a manner that respective intervals between the adjacent stator blades (SV) become unequal at least partly. If the stator blades are arranged as mentioned above, there are formed wave fronts having different moving directions and phases, and these wave fronts are interfered with each other so as to be attenuated. Accordingly, an interference noise is reduced. Therefore, in accordance with the invention, it is possible to reduce an interference noise without enlarging a rotor stator blade interval as well as reducing a used amount of a sound absorption material.
摘要:
The present invention is a method of producing a 3-hydroxymethyl-benzo[b]thiophene derivative without the possible concomitant formation of isomers, which comprises selectively cyclizing a sulfoxide having X shown in the reaction scheme below: wherein R1 to R3 are, same or independently, a hydrogen atom, an alkyl group having 1 to 4 carbons, a trihalomethyl group, an alkoxy group having 1 to 4 carbons, an alkylthio group having 1 to 4 carbons, or a trihalomethoxy group; R4 is an acyl group; X is a halogen atom, a hydroxy group, an amino group, a mercapto group, an alkylthio group having 1 to 9 carbons, an acyloxy group having 1 to 9 carbons, an acylamino group having 1 to 9 carbons, or a trihalomethoxy group.