摘要:
The present invention relates to a method of removing and preventing water and condensate blocks in wells by contacting a subterranean formation with a composition comprising a low molecular weight fluorinated copolymer having perfluoro alkyl moieties which are no longer than C6. A fluorinated copolymer of low molecular weight of about 50,000 g/mol and a method of preparing the same are also disclosed.
摘要:
Benzene derivatives of the formula:- ##STR1## wherein R is an aliphatic hydrocarbon group of 1 to 4 carbon atoms optionally substituted by halogen or alkoxy, R.sup.1 is hydrogen or methyl, R.sup.2 is hydrogen, halogen, alkyl, alkanoylamino optionally substituted by cycloalkyl of 3 to 6 carbon atoms, alkoxycarbonylamino, alkanoyl, benzoyl or N-methylmethanesulphonylamino, and Y is primary amino or substituted amino, possess anthelmintic and anti-viral activity. New compounds within that formula possess fungicidal properties.
摘要:
The present invention relates to a method of removing and preventing water and condensate blocks in wells by contacting a subterranean formation with a composition comprising a low molecular weight fluorinated copolymer having perfluoro alkyl moieties which are no longer than C6. A fluorinated copolymer of low molecular weight of about 50,000 g/mol and a method of preparing the same are also disclosed.
摘要:
A method and apparatus are provided for implementing bus interface calibration to improve bus interface initialization time in a system. Bus interface calibration is performed and average calibration values are saved. At bus interface initialization time, checking for saved calibration values is performed. The saved calibration values are used and tested. When the saved calibration values pass the test, then the saved calibration values are used for system operation without performing any training steps.
摘要:
Benzene derivatives of the formula: ##STR1## wherein R.sup.1 represents alkyl, R.sup.2 represents a group --SR.sup.3, --SOR.sup.3, --SO.sub.2 R.sup.3, --OR.sup.3, --SCONH.sub.2, --SCN or --T(CH.sub.2).sub.m T.sup.1 R.sup.4 [wherein R.sup.3 represeents alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, unsubstituted or substituted aryl, or cycloalkylalkyl, R.sup.4 represents hydrogen or alkyl, T and T.sup.1 each represent oxygen, sulphur or sulphinyl, and m is an integer from 1 to 7] whose position on the benzene ring is either para to the group --NHCSNHCOOR.sup.1 or para to the group --NHCOAZ, A represents a bivalent straight-chain aliphatic hydrocarbon radical of 1 to 4 carbon atoms or a said hydrocarbon radical substituted by at least one methyl group, and Z represents a group of the formula:- ##STR2## wherein R.sup.5 represents hydrogen or alkyl, R.sup.6 represents hydrogen, alkyl or phenylalkyl, and R.sup.7 represents hydrogen or alkyl, or R.sup.6 and R.sup.7 together with the nitrogen atom to which they are attached form a 5-,6- or 7-membered heterocyclic ring optionally substituted by alkyl group(s), and X.sup.- represents a pharmaceutically acceptable anion, are new compounds useful as anthelmintics and antifungal agents.