Abstract:
A packaging bag for secondary packaging which allows safety transport of infectious substances is provided. Front and back surface materials are placed on top of another and formed into a bag member by heat-sealing both side edge and bottom edge portions continuously. Partitioning materials formed of a plastic sheet or film having a required size are disposed on inner surfaces of the upper ends of the front and back surface materials and attached to the front and back surface materials by heat-sealing both side edge and bottom edge portions except for an upper end edge portion to form pocket portions. A sealing material is stuck to the back surface material on the outside of the upper end portion thereof so as not to be opened. The internal pressure is received by one of the pocket portions when the internal pressure in the packaging bag is increased.
Abstract:
Xylylene diisocyanate is produced in higher space-time yield with higher selectivity by thermal decomposition of xylylene dicarbamate as an urethane compound, i.e. by subjecting the urethane compound to reactive distillation with a thermal decomposition catalyst of at least one of metals selected from antimony and tin or their compounds in the presence of an inert solvent having a higher boiling point than that of the resulting xylylene diisocyanate under reduced pressure of 1 to 500 mmHg and at 150.degree. to 350.degree. C. and then subjecting the resulting reaction products as distillates to partial condensation outside the reactive distillation system, thereby separately recovering the resulting alcohol and xylylene diisocyanate.
Abstract:
In an air conditioning system of the type having air volume to each room controlled by individual dampers the improvement comprising a damper control unit for, on a trial mode, gradually changing the opening angle of each damper while the other dampers are kept fully closed; air volume measurement unit for detecting the air volume from a blower to measure the actual air volume; pressure difference measurement unit for detecting a difference in pressure between the outlet air and the inlet air of an indoor heat exchanger unit to measure an air feeding pressure difference with respect to an actual duct system; air volume calculation unit for finding the relationship among the air volume passing through the respective dampers, the opening angles of the respective dampers and the air feeding pressure difference, based on outputs from the pressure difference measurement unit, the air volume measurement unit and the damper control unit, to find air feeding resistance in the respective ducts.
Abstract:
The air conditioning apparatus comprises a heat source apparatus, an air blower, a damper disposed in each of branch duct to regulate warm air or cool air to be supplied to each of rooms, a room thermostat placed in each of the rooms, a heat load measuring means and a damper control means. The heat load measuring means controls the degree of opening of the dampers through the damper control means on the basis of output signals of an established temperature and the current room temperature from the room thermostats. Further, the capacity of the heat source apparatus and the capacity of the air blower are determined in accordance with the value of the heat load, and the pressure and the temperature of the air in the air duct.
Abstract:
Carbon monoxide of high purity and methanol can be obtained from a mixture of methyl formate and methanol without eliminating methanol or isolating methyl formate from the mixture by selectively pyrolyzing methyl formate alone in the presence of an alkali metal compound other than alkali metal alcoholates.
Abstract:
An envelope opener having a pair of entries in its opposite sides through which an envelope may enter the opener from either side to have its head automatically cut as it passes through the opener, comprises: cutters driven by a reversible electric motor; a lane for guiding the envelope, interrupted by the cutters; a pair of bar-type sensors swingably mounted crossing the lane, each being positioned in opposite sides of the cutters; a link connecting the sensors with each other to swing the sensors in synchronism when one is swung by an envelope passing through the lane; and contact assemblies coupled with the sensors, one of the assemblies being operated by the of the sensors to establish rotational directions of the motor and the cutters when the envelope entered the opener from either side swings one of the sensors to bring the other through the link into a position where the other of the contact assemblies coupled with the other of the sensors remains opened.
Abstract:
A process for optically isomerizing an optically active alpha-amino acid amide comprising heating a D-alpha-amino acid amide or an L-alpha-amino acid amide in the presence of a strongly basic compound; and a process for producing an L-alpha-amino acid, which comprises(1) subjecting a D,L-alpha-amino acid amide or a mixture of a major amount of a D-alpha-amino acid amide and a minor amount of an L-alpha-amino acid amide to the action of a microorganism having the ability to hydrolyze the L-alpha-amino acid to obtain a hydrolyzate containing the L-alpha-amino acid and D-alpha-amino acid,(2) separating the L-alpha-amino acid from the hydrolyzate and recovering the remaining D-alpha-amino acid amide.(3) heating all or part of the recovered D-alpha-amino acid amide in the presence of a strongly basic substance to obtain a D,L-alpha-amino acid amide or a mixture of a major amount of the D-alpha-amino acid amide and a minor amount of the L-alpha-amino acid amide, and(4) recycling the D,L-alpha-amino acid amide or the mixture to step (1) as part or all of the starting material.
Abstract:
Lubricating oil composition which comprises: lubricating base oil,(A) at least one organophosphorus compound represented by the general formula (I), (II), (III), (IV), (V), (VI), (VII) or (VIII)and(B) at least one organomolybdenum compound selected from the group consisting of molybdenum oxysulfide alkylphosphorodithioates and molybdenum oxysulfide alkyldithiocarbamates.The lubricating oil composition is excellent in antiwear properties, anti-seizure properties, and corrosion resistance, and is suitable for gear oils, and bearing oils, also for internal combustion engine oils and automatic transmission fluids, and further for hydraulic fluids, metal working fluids.
Abstract:
Provided is a process for producing isocyanates from carbamic acid esters which comprises thermally decomposing carbamic acid esters in the presence of a catalyst containing at least one compound selected from the group consisting of organic sulfonic acids and alkaline metal salts of organic sulfonic acids. Thereby, a high thermal decomposition rate can be provided and isocyanate can be obtained in a high yield.
Abstract:
The air conditioning apparatus comprises a heat source apparatus, an air blower, a damper disposed in each of branch duct to regulate warm air or cool air to be supplied to each of rooms, a room thermostat placed in each of the rooms, a heat load measuring means and a damper control means. The heat load measuring means controls the degree of opening of the dampers through the damper control means on the basis of output signals of an established temperature and the current room temperature from the room thermostats. Further, the capacity of the heat source apparatus and the capacity of the air blower are determined in accordance with the value of the heat load, and the pressure and the temperature of the air in the air duct.