50, 51 Nevertheless, using 3‐(trifluoromethyl)phenylhydrazine, the 6‐isomer 7 o remains largely the major product, most probably due to the steric hindrance of the aryl moiety, which also appears to be an important factor. Indeed, with the large tBu group, 6‐tert‐butyl‐3‐(difluoro...
11 Activation by the alkaline treatment is not fully understood in terms of chemical struc- tural changes, but attributed to increased mi- cropore in the adsorbent.12 The most contribut- ing factor to the micropore formation may be conversion of the cyano group partially re- maining in the ...
Thus, exogenous nucleotides may be an important factor for maintaining optimal immune 464 JYONOUCHI ET AL. functions in certain circumstances. In animals fed nucleotide- free diets, decreased immune functions have been demonstrated associated with delayed allograft rejection and increased mortal- ity in...
The calculated whole energy profiles indicate that the formation of dinitrogen is controlled by thermodynamic factor. Detailed electronic structure analysis indicates that the coordinated NO is a good electrophile and responsible for the catalytic activity because the Ru 鈫 NO back donating bonding ...
The Fe-N-C catalyst represents one of the most promising candidates for replacing platinum-based catalysts toward the oxygen reduction reaction. The pivotal factor in the successful integration of Fe-N-C catalysts within applications is ... Q Wang,X Liu,S Tao - 《Journal of Physical Chemistry...
(rearrangement/scrambling factor)的测定 确定重排因子(y) 后,可通过公式校正测定结果:电子能量 N β -N α -O N α -O + (主要) 轰击 N β -O + (少量) 碎片离子NO + N α N β O + A是常数,A=( 15 R α / 15 R bulk ) std δ 15 N α = δ 15 N β obs + 2y(δ 15 N ...
The calculated whole energy profiles indicate that the formation of dinitrogen is controlled by thermodynamic factor. Detailed electronic structure analysis indicates that the coordinated NO is a good electrophile and responsible for the catalytic activity because the Ru -> NO+ back donating bonding ...
Transcription of the cysJIH region of the operon is enhanced in response to N-acetyl-l-serine, the cysteine precursor, by the LysR-like transcription factor CysB (60). Despite its name, siroheme synthase (CysG) is part of the nitrate regulon, expressed constitutively at low levels but not ...