摘要:
An apparatus for detecting or measuring the concentration of an analyte gas in a gas sample, which apparatus comprises a donor polymer and a halogen-containing compound positioned to contact the analyte gas and capable of reacting with the analyte gas to yield halogen; and a method for using the apparatus.
摘要:
A passive gas sampling apparatus for detecting an analyte gas, which apparatus includes (1) a shell enclosing an adsorbent and (2) a diffusion tube extending through the shell and having (a) an inlet opening means outside the shell, through which the analyte gas may enter the diffusion tube, and (b) an outlet opening imbedded in the adsorbent inside the shell; and a method for using such apparatus.
摘要:
To enable simple and accurate measurement for the flow rate (emission flux) of a chemical substance released from a site to be measured such as a floor surface, ceiling, wall surface, or furniture with no effect of external air (air in the room). [Means for Solution]An opening 14 for taking in a chemical substance released from an inspection object (13) into the casing (12) is formed to the bottom surface (12a) of a hollow casing (12) to be bonded to the inspection object (13), a test specimen (15) that takes place color change reaction with the chemical substance under a humid circumstance is disposed to the inner surface of the casing (12) being opposed to the opening (14), and a transparent observing section (12a) is formed to the casing (12) for observing the color change of the test specimen (15) from the outside while bonding the inspection object (13) as it is.
摘要:
A swing mechanism for a construction machine having a grease bath seal. A grease bath can be disposed on a vehicular base carrier of the machine, and can be coupled with a swing frame. The grease bath seal can then act to prevent intrusion of pollutants or other foreign materials into the grease bath. The seal may act to prevent intrusion of pollutants or other foreign materials over an extended amount of time and can be arranged in such as manner as to improve the durability and tightness of a seal member.
摘要:
A dephosphorization material is formed from concrete sludge resulting from centrifugal casting of concrete products, production of concrete, cleaning of concrete production equipment, or cleaning of concrete transporting vehicles. The dephosphorization material is used for dephosphorization treatment by a dephosphorization apparatus that includes a single reaction tank provided with a wastewater supply means, a dephosphorization material supply mean, and a recovery means. The dephosphorization apparatus removes phosphorus from phosphorus-containing wastewater, such as sewage water, based on the formula 10Ca2++6PO43−+2OH−→Ca10(PO4)6(OH)2 and recovers through the recovery means a dephosphorization by-product that precipitates as crystals as a result of the reaction.
摘要:
A swinging pinion on the side of an upper swing structure is meshed with a ring gear which is provided on and around the inner periphery of an inner ring on the side of a vehicular base carrier. A grease bath is provided on the inner side of the inner ring and under a swing frame. A center joint is located in an opening which is provided in the swing frame at the center of swinging motions of the upper swing structure. The grease bath is formed by bath-forming walls around an central top plateau wall which is connected the center joint on the inner peripheral side. An annular seal member of resilient material is interposed between the top plateau wall of the grease bath and the lower side of the swing frame. The annular seal member is formed in a height which is larger than the width of spacing between the top plateau wall and the swing frame. At one side, the seal member is detachably fixed either on the side of the swing frame or on the side of the top plateau wall section. At the other side, the seal member is provided with an annular sliding portion which is held in sliding contact with the other one of the swing frame and the top plateau wall in an inclined posture in a radially inward direction.