摘要:
A composition comprising rifaximin in the form of particles, wherein substantially all the particles have a particle size less than or equal to 2 micrometres.
摘要:
A system for monitoring a parameter of a subterranean formation using swellable materials is disclosed. The system may include a sensor device configured to detect a parameter of a subterranean formation. The system may also include a swellable material configured to position the sensor device toward a surface of the subterranean formation by swelling of the swellable material. The system may further include a telescoping section coupled to the sensor device and emplaced in the swellable material. The telescoping section may be configured to extend with the positioning of the sensor device.
摘要:
A method for isolating a portion of a wellbore including preparing a sealant composition includes an emulsion of an internal phase and an external phase. The sealant composition is placed into the wellbore where one phase sets upon subjecting the sealant composition to a thermal source followed by the setting of the other phase.
摘要:
A downhole tool releasing mechanism which includes a collet for releasably engaging a mandrel of a downhole tool. A retaining band is circumferentially disposed about the fingers of the collet for maintaining engagement of the collet and the mandrel prior to application of a predetermined axially directed force on the releasing mechanism. Upon application of such a force the collet fingers expand, breaking the shear band, the mandrel is released and the downhole tool is disengaged.
摘要:
A Nutritional Composition comprising soluble extractable material from a lignocellulosic source. A method of producing a composition, comprising providing a lignocellulosic source, extracting soluble materials from the lignocellulosic source to produce soluble extractable material, and processing the soluble extractable material to yield a Nutritional Composition, wherein the Nutritional Composition comprises hemicellulose and exhibits pathogen blocking, anti-adhesion activity.
摘要:
The present invention provides a processes for preparing 5 -Azacytidine, and intermediates thereof, said process Comprising reacting a silylated 5-azacytosine of the formula (II), a sugar moiety having of the formula (III): and a protic acid; wherein R is a substituted or non substituted C 1 -C 20 acyl moiety, R 1 , R 2 and R 3 are each independently H or an alkyl group, and X is a halogen. The present invention further provides an analytical method for determining the purity of 5-Azacytidine in a sample.
摘要:
This invention relates a crystalline form of N-[4-[2-(2-amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid, pemetrexed diacid, and to a process for the preparation thereof.
摘要:
This invention relates a crystalline form of N-[4-[2-(2-amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid, pemetrexed diacid, and to a process for the preparation thereof.