نتایج جستجو برای: ethylmalonic encephalopathy
تعداد نتایج: 20072 فیلتر نتایج به سال:
The use of a bifunctional Cinchona alkaloid catalyst has provided a new organocatalytic strategy for the enantioselective addition of diphenylphosphine to a range of nitroalkenes, affording optically active beta-nitrophosphines (up to 99% ee after crystallization); this organocatalytic approach, providing a direct route to a new class of potentially useful enantiopure P,N-ligands, constitutes a...
The spectrum of gravitational waves that have been produced in inflation is modified during cosmological transitions. Large drops in the number of relativistic particles, like during the QCD transition or at ee annihilation, lead to steps in the spectrum of gravitational waves. We calculate the transfer function for the differential energy density of gravitational waves for a first-order and fo...
A series of quadruply bonded dimolybdenum compounds of form Mo(2)(EE'CC≡CPh)(4) (EE' = {NPh}(2), Mo(2)NN; {NPh}O, Mo(2)NO;{NPh}S, Mo(2)NS; OO, Mo(2)OO) have been synthesised by ligand exchange reactions of Mo(2)(O(2)CCH(3))(4) with the acid or alkali metal salt of {PhC≡CCEE'}(-). The compounds Mo(2)NO, Mo(2)NS and Mo(2)OO were structurally characterised by single crystal X-ray crystallography. ...
We report measurements and searches for resonant B → Kh → Kγγ decays where h is a η, η, ηc, ηc(2S), χc0, χc2, J/ψ meson or the X(3872) particle. The results are based on a data sample containing 535 million BB pairs collected with the Belle detector at the KEKB ee asymmetric-energy collider operating at the Υ(4S) resonance. Signals are observed in the modes with η and η, and we obtain evidence ...
We describe the design, properties, and performance of an excitation–emission EE fluorimeter that enables spectral characterization of an object simultaneously with respect to both its excitation and its emission properties. Such devices require two wavelength-selecting elements, one in the optical path of the excitation broadband light to obtain tunable excitation and the other to analyze the ...
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