A generalized formalism of QCD multipole expansion including constituent quark field quantization is proposed. It can be applied to study soft-gluon emission processes of heavy quark-antiquark systems with quark flavor changing or quark pair annihilation. As an application, the radiative decays J/t+h + 7 + 77 and J/t) --t 7+7r” are studied in this framework. It is shown that J/$ + 7+~ is domina...

The aim of this paper is to prove Theorem 1.1 below, a generalization to virtually nilpotent spaces of a result of Wilkerson [13] and Sullivan [12]. We recall that a CW complex Y is virtually nilpotent if (i) Y is connected, (ii) 7r~ Y is virtually nilpotent (i.e. has a nilpotent subgroup of finite index) and (iii) for every integer n > 1, zr~Y has a subgroup of finite index which acts nilpoten...

The purposes of this study were t o examine the biologic effects of the engagement of the interleukin-7 receptor (IL-7R) with recombinant human interleukin-7 (rhlL-7) in immunophenotypically distinct T-lineage acute lymphoblastic leukemia (ALL) blasts and t o elucidate the biochemical nature of the IL-7R-linked transmembrane signal in rhlL-7responsive T-lineage ALL blast populations. In the abs...

IL-7 signaling is required for V(D)J recombination at the TCR locus. We have recently reported that IL-7 controls chromatin accessibility for RAG-mediated cleavage. Inhibition of histone deacetylase substituted for the IL-7 signal, indicating a role for histone acetylation in altering chromatin accessibility. We found a greatly reduced histone 3 and histone 4 acetylation level in IL-7R / thymoc...

Although binge drinking is a serious public health problem, relatively few studies have investigated the relationship between specific dopaminergic genes such as the dopamine D4 receptor (DRD4) and binge drinking attitudinal phenotypes. This study used the DNA subsample (N=233, mean age 19.8, standard deviation,0.89) of the National Longitudinal Study of Adolescent Health to investigate the ass...

Bioassays of six racemic synthesized candidate sex pheromone compounds against male New World screwworm Cochliomyia hominivorax (Coquerel) flies showed that the most potent bioactivity was found with 6-acetoxy-19-methylnonacosane and 7-acetoxy-15-methylnonacosane compared with four other isomeric acetoxy nonacosanes and a larger aliphatic ketone. As all these methyl-branched compounds have two ...

Three new germacrane sesquiterpenes and a new m-menthane monoterpene were isolated together with four known compounds from the pericarp of Illicium lanceolatum, an adulterant to star anise (Illicium verum). All compounds were isolated from Illicium plants for the first time. The absolute stereochemistry of all germacranes and m-menthane was established by a combination of NMR and the modified M...

Remarks . In the case r = 1 the simple lower bound Vj (x) > x(x) is available . When r = 2, the analogous result is V2(x) > 7c 2 (x) where 7r 2 (x) denotes the number of primes p < x such that (p 1)/2 is prime . Evidently the numbers 02(p) = (p -3)/2 are distinct . Sieve theory suggests, but of course does not yet prove, that 7r 2(x) > x/log 2 x, so that apart from the second factor on the righ...

The purposes of this study were t o examine the biologic effects of the engagement of the interleukin-7 receptor (IL-7R) with recombinant human interleukin-7 (rhlL-7) in immunophenotypically distinct T-lineage acute lymphoblastic leukemia (ALL) blasts and t o elucidate the biochemical nature of the IL-7R-linked transmembrane signal in rhlL-7responsive T-lineage ALL blast populations. In the abs...

ETV6-RUNX1 is associated with childhood acute B-lymphoblastic leukemia (cALL) functioning as a first-hit mutation that initiates a clinically silent pre-leukemia in utero. Because lineage commitment hierarchies differ between embryo and adult, and the impact of oncogenes is cell-context dependent, we hypothesized that the childhood affiliation of ETV6-RUNX1 cALL reflects its origins in a progen...