نتایج جستجو برای: ansa titanocene dichloride
تعداد نتایج: 2776 فیلتر نتایج به سال:
Blue-light emissive type II [email protected] sulfonic acid (ANSA) core–shell quantum dots (QDs) is first fabricated. Green luminescence (GL) of 2.25 eV ZnO QDs disappears at the threshold excitation wavelengths (λex) > 400 nm due to electronic transition from conduction band (CB) or shallow donor centers VZn2− ≈0.9 above valence (VB). Blue emissions are well elucidated by charge transfer CB lo...
2NP is among the priority pollutants for environmental ecosystem and poses a threat to health of living things by mixing in wastewater. Therefore, determination important. In this study, glassy carbon (GC) electrode surface was modified with 1-amino-2-naphthol-4-sulfonic acid (ANSA). The electrochemical behavior voltammetric 2-nitrophenol (2NP) on (ANSA-GC) performed. Firstly, it decided that s...
C(72)-Macrocyclic systems functionalized with nitroaryl and arylamino groups were synthesized from the bisdioxine diacid dichloride 1,3,5,7-tetra-tert-butyl-2,6,9-trioxabicyclo[3.3.1]nona-3,7-diene-4,8-dicarbonyl dichloride (3).
absracta rare variant of ansa cervicalis was discovered during dissection of the neck in amale cadaver. the superior root of the ansa cervicalis was formed by the c1 ventralramus. it accompanied with the vagus nerve in place of the hypoglossal nerve and descendedinto the carotid sheath with it. moreover the c1 ventral ramus formed fromthe sheath and joined the inferior root from c2 and c3 ventr...
Two convergent total syntheses of the ansa-polyketide (-)-kendomycin (1) are described. The syntheses benefit from the use of readily available and cheap starting materials. Highly complex diastereoselective Claisen-Ireland rearrangements were used to introduce the (E)-double bond and the C16-Me group. The ring closure of the strained ansa macrocycle was achieved by ring-closing metathesis and ...
AbsractA rare variant of ansa cervicalis was discovered during dissection of the neck in amale cadaver. The superior root of the Ansa cervicalis was formed by the C1 ventralramus. It accompanied with the vagus nerve in place of the hypoglossal nerve and descendedinto the carotid sheath with it. Moreover the C1 ventral ramus formed fromthe sheath and joined the inferior root from C2 and C3 ventr...
A study of the dehydrogenation of dimethylamine borane using different titanocene(III) complexes with 2-phosphinoaryloxide ligands is presented. Complexes Cp2Ti(κ(2)-O, P-O-C6H4-PR2) (3a: R = i-Pr, 3b: R = Ph) (Cp = η(5)-cyclopentadienyl) and Cp*2Ti(κ(1)-O-O-C6H4-PR2) (5a: R = i-Pr, 5b: R = Ph) (Cp* = η(5)-pentamethylcyclopentadienyl) were prepared by reactions of the 2-phosphinophenol ligand w...
OBJECTIVE To systematically review outcomes of reinnervation techniques for the management of unilateral vocal fold paralysis (UVFP). DATA SOURCES Medline and Cochrane databases for English-language studies published between 1966 and 2009 on the surgical management of UVFP. REVIEW METHODS Studies were excluded if they reported on bilateral vocal fold paralysis, used nonhuman subjects, or di...
Bacterial L-asparaginase has been a universal component of therapies for childhood acute lymphoblastic leukemia since the 1970s. Two principal enzymes derived from Escherichia coli and Erwinia chrysanthemi are the only options clinically approved to date. We recently reported a study of recombinant L-asparaginase (AnsA) from Rhizobium etli and described an increasing type of AnsA family members...
Neuropeptide Y and norepinephrine are localized in sympathetic nerve terminals throughout the heart. We sought to determine the functional distribution of the neuropeptide Y-containing sympathetic fibers to the sinus and atrioventricular (AV) nodal regions. We recorded cycle length, AV interval, and arterial pressure in 14 anesthetized dogs. We assessed the release of neuropeptide Y from sympat...
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