摘要:
Compounds of formula (I): ##STR1## wherein R is hydrogen, halogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy; R.sub.1 is hydrogen or C.sub.1-6 alkyl; and n is 1 to 6 and pharmaceutically acceptable salts thereof; pharmaceutical compositions containing them; a process for their preparation; and their use in treating allergy.
摘要:
Bicyclic compounds useful in the prophylaxis and treatment of allergic diseases, pharmaceutical compositions containing the same, methods of administration of the compositions, intermediates useful in preparing the compounds and conversion of the intermediates to the bicyclic compounds. Examples of compounds are substituted coumarins and indanediones and their pharmaceutically acceptable salts.
摘要:
Substituted naphthoquinones of the formula (I) and pharmaceutically acceptable salts thereof wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent alkyl, aryl, alkoxy, hydroxy, hydrogen or halogen or any two of the groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 taken together complete a carbocyclic ring, have useful anti-allergy activity in mammals.
摘要:
3-Carboxyisocoumarins, 2-thiaisocoumarins and related isocarbostyrils are useful anti-allergic agents. Several of these compounds are novel, and a process for their preparation is provided.
摘要:
A noise reduction method is disclosed that uses numerical logic to estimate the value of the noise in a receive system and remove the noise. A surrogate probe value is selected and subtracted from an input signal and an iterative process selects a noise probe value for each iteration and the respective noise probe values are summed resulting in a noise estimate that is combined with the input signal.
摘要:
A screen for separating solids and liquids is formed from parallel strips of wedge wire or similar material into a two-sided enclosure having the flat bases of the wedge wires oriented to contact dirty liquid. Unfiltered liquid containing solids contacts the screen surface on both sides of the enclosure, forming a passage for filtrate. A wedge wire screen may be bent back on itself to form a C-shape or may be a closed curve, still exposing only the flat sides of the wedge wires to the dirty liquid, and collection filtrate within the enclosure so formed. Filter units may be placed in a housing adapted to accommodate two or more in a substantially concentric relationship.
摘要:
A circuit for providing enhanced directivity in the form of a narrowed receive beam and a relatively small antenna with performance comparable to a much larger antenna at similar frequencies. Received signals are converted to digital values and stored in a manner which enables subsequent processing directed to improving the resolution of the received signals and to reduce the associated noise corresponding to the received data samples. The Signal-to-Noise ratio of the received data signals is improved as a result of processing techniques made possible by the configuration of the antenna and the digitally stored nature of the received data.
摘要:
A receive system, including special integrated circuits, for providing enhanced directivity in the form of a narrowed receive beam and a relatively small antenna with performance comparable to a much larger antenna at similar frequencies. Received signals are converted to digital values and stored in a manner which enables subsequent processing directed to improving the resolution of the received signals and to reduce the associated noise corresponding to the received data samples. The Signal-to-Noise ratio of the received data signals is improved as a result of processing techniques made possible by the configuration of the antenna and the digitally stored nature of the received data.
摘要:
An assembly for determining the thermal properties of a downhole formation while drilling or perforating comprises a system for generating a laser beam that cuts and heats the formation within a wellbore extending into the formation, and at least one temperature sensor within the wellbore that measures a temperature of the formation.