摘要:
4-Thio substituted coumarin derivatives, 4,5-dithio substituted coumarin derivatives, and coumarin dimers are provided, as well as processes for their preparation. The invention also provides a method and composition for the treatment of hepatitis C virus (HCV) by adiministering 4-thio substituted coumarin derivatives, 4,5-dithio substituted coumarin derivatives, and coumarin dimers.
摘要:
4-thio substituted coumarin derivatives and coumarin dimers are provided, as well as processes for their preparation. A synthetic process for the preparation of 4-thio substituted coumarin derivatives is provided using mild reaction conditions, which maintains a high substituent tolerance and is appropriate for use in solid phase syntheses for producing a library of 4-thio substituted coumarin derivatives for biological screening.
摘要:
Techniques are provided which may be implemented using various methods and/or apparatuses in a device comprising a receiver to scan a spectral band of a received signal comprising a desired signal contribution to determine whether signal data associated with at least a sub-band of the spectral band further comprises at least one undesired signal contribution. In response to determining that the signal data comprises at least one undesired signal contribution, the mobile station may initiate at least one notch filter to affect the undesired signal contribution in subsequent signal data associated with the received signal.
摘要:
A method for preparing hydrorefining catalyst comprises the following steps: (1) mixing an aqueous ammonia solution with a polyamine complexing agent to form a mixed solvent; (2) adding a cobalt salt to the mixed solvent, dissolving the cobalt salt, and then adding a molybdenum salt and optional salts of other active components, and dissolving them to prepare an impregnating solution; and (3) impregnating a support with the impregnating solution, followed by aging, drying, and activating the impregnated support to form a hydrorefining catalyst. The hydrorefining catalyst prepared by this method has good activity, selectivity and stability in use.
摘要:
The invention provides certain quinoxalines and aza-quinoxalines of the Formula (I), and their pharmaceutically acceptable salts, wherein J1, J2, R1, R2, R3, R22, Ra, Rb, Rc, Rd, X, Y, b, n, and q are as defined herein. The invention also provides pharmaceutical compositions comprising such compounds, and methods of using the compounds for treating diseases or conditions associated with uncontrolled or inappropriate stimulation of CRTH2 function.
摘要:
Industrial blast nozzles are disclosed which have liners made, at least in part, from a SiAlON-containing ceramic material which has a surface resistance of about 12 megaOhms or less and an erosion rate of about 1.9×10−4 cm3/g or less. The SiAlON-containing ceramic material preferably contains a two-phase SiAlON, silicon carbide, and a conductive phase that is one or more of titanium nitride, tantalum nitride, zirconium nitride, and titanium carbide.
摘要翻译:公开了具有至少部分由含有SiAlON的陶瓷材料制成的衬垫的工业喷射喷嘴,其具有约12兆欧姆或更小的表面电阻和约1.9×10 -4 cm 3 / g以下的侵蚀速率。 含SiAlON的陶瓷材料优选包含两相SiAlON,碳化硅和作为氮化钛,氮化钽,氮化锆和碳化钛中的一种或多种的导电相。
摘要:
Industrial blast nozzles are disclosed which have liners made, at least in part, from a SiAlON-containing ceramic material which has a surface resistance of about 12 megaOhms or less and an erosion rate of about 1.9×10−4 cm3/g or less. The SiAlON-containing ceramic material preferably contains a two-phase SiAlON, silicon carbide, and a conductive phase that is one or more of titanium nitride, tantalum nitride, zirconium nitride, and titanium carbide.
摘要翻译:公开了具有至少部分由含有SiAlON的陶瓷材料制成的衬垫的工业喷射喷嘴,其具有约12兆欧姆或更小的表面电阻和约1.9×10 -4 cm 3 / g以下的侵蚀速率。 含SiAlON的陶瓷材料优选包含两相SiAlON,碳化硅和作为氮化钛,氮化钽,氮化锆和碳化钛中的一种或多种的导电相。
摘要:
Protein tyrosine phosphatase (PTP) Shp2 is a non-receptor PTP that involved in cell signaling and regulation of cell proliferation, differentiation, and migration. Shp2 mediates activation of kinases that are involved in the pathogenesis of human carcinoma. A high throughput screen identified compounds that inhibit the PTP Shp2. Several compounds were identified that selectively inhibit Shp2 over Shp1 with low to sub-micromolar activity. Also disclosed are methods of inhibiting a protein tyrosine phosphatase in a cell and treating cancer through selective inhibition of Shp2.
摘要:
Methods and apparatus are provided for use in devices enabled to perform waveform correlation processing of satellite positioning system (SPS) signals, including peak reconstruction.