نتایج جستجو برای: c14
تعداد نتایج: 2876 فیلتر نتایج به سال:
Catalytic and noncatalytic copyrolysis of plastic heavy oil was studied using thermogravimetric analysis (TGA), pyrolysis reactor experiments, GC the formed liquid. As revealed by TGA predegradation as a pretreatment method had further lowered decomposition temperature polypropylene– (PP?) bitumen mixtures reduced severity catalyst deactivation coke. The presence PP in increased liquid yield de...
A convergent total synthesis of the PP2A-inhibitor phoslactomycin A was achieved using a CuTC-mediated coupling of an alkenyl iodide C1-C13 fragment with an C14-C21 alkenyl stannane in the presence of a protected phosphate. Key features for the assembly of the C1-C13 fragment were an asymmetric dihydroxylation, an Evans-Aldol reaction, and a well-balanced protective group strategy. An asymmetri...
Crystallization-induced diastereoselective transformation (CIDT) of an α-methyl nitrile completes an entirely non-chromatographic synthesis of the halichondrin B C14-C26 stereochemical array. The requisite α-methyl nitrile substrate is derived from D-quinic acid through a series of substrate-controlled stereoselective reactions via a number of crystalline intermediates that benefit from a rigid...
A new intermetallic tetrahedrally close-packed phase, called the C phase, was found coexisting with the C14 Laves phase by means of high-resolution electron microscopy and selected-area electron diffraction. Its space group and lattice parameters are: B2/m, a = 17.8, b =7.7 , c =4 .7 ~ , ~/= 99° and Z =50 (e.s.d.'s of lattice parameters ca 0.05 A). Its atomic coordinates and orientation relatio...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید