In 1970, Walkup [46] completely described the set of f -vectors for the four 3manifolds S3, S2×S1, S2×S1, and RP . We improve one of Walkup’s main restricting inequalities on the set of f -vectors of 3-manifolds. As a consequence of a bound by Novik and Swartz [35], we also derive a new lower bound on the number of vertices that are needed for a combinatorial d-manifold in terms of its β1-coeff...

The Cognitive Neuroscience Treatment Research to Improve Cognition in Schizophrenia initiative, funded by an R13 conference grant from the National Institute of Mental Health, has sought to facilitate the translation of measures from the basic science of cognition into practical brain-based tools to measure treatment effects on cognition in schizophrenia. In this overview article, we summarize ...

A highly conserved arginine residue is close to the catalytic center of PPM/PP2C-type protein phosphatases. Different crystal structures of PPM/PP2C homologues revealed that the guanidinium side chain of this arginine residue can adopt variable conformations and may bind ligands, suggesting an important role of this residue during catalysis. In this paper, we randomly mutated Arginine 13 of tPp...

Scorpion toxins are important pharmacological tools for probing the physiological roles of ion channels which are involved in many physiological processes and as such have significant therapeutic potential. The discovery of new scorpion toxins with different specificities and affinities is needed to further characterize the physiology of ion channels. In this regard, a new short polypeptide cal...

Complements or Substitutes? Task Specialization by Gender and Nativity in Spain Learning about the impact of immigration on the labor market outcomes of natives is a topic of major concern for immigrant-receiving countries. There exists an extensive literature evaluating the impact of immigration on the employment and wages of natives in the U.S. Yet, despite the significant degree of occupatio...

When a transient pair of antiparallel helices is formed (Fig. 5A, middle panel), 11 contacts are formed, and also 11 contacts are formed when a transient loop-hairpin structure is created. Both processes shorten the polypeptide chain by 2 nm and the structures are inherently unstable and can easily open due to thermal fluctuations. If H2 of R16 had refolded to the stack, it would have formed on...

This study aims to determine the effect of arm length, hand-eye coordination, and arm-toe coordination on bowling ability male cricket athletes in Jakarta. Data collection was carried out early January 2021, which took place at campus Jakarta State University Cricket Arena. The method research used this is survey with path analysis technique or analysis. sample amounted 18 people who came from ...

1. Exposure of 10 R3-R13 neurones to a 115-min period of hypoxia resulted in depolarization of their membrane potentials (EM) from a mean of -46-9 ± 3-1 to-20-8 ± 4-4mV (S.E.). 2. Intracellular potassium ion activities (a^) decreased significantly from 118-9 ± 5 1 to 67-7 ± 8-5rnM-K. This is equivalent to a change in EKirom — 70-9 mV to —54-5 mV, which is insufficient to account for depolarizat...

An algorithm for computing matrix functions is presented. It employs a Schur decomposition with reordering and blocking followed by the block form of a recurrence of Parlett, with functions of the nontrivial diagonal blocks evaluated via a Taylor series. A parameter is used to balance the conflicting requirements of producing small diagonal blocks and keeping the separations of the blocks large...

1 From the Dept of Radiology, Vanderbilt Univ Medical Ctr, RR-1223, MCN, 1161 21st Ave South, Nashville, TN 37232-2675 (C.L.P.); Dept of Radiology, Univ of Michigan Health Systems, Ann Arbor (H.P.C.); Dept of Radiology, Univ of Texas M.D. Anderson Cancer Ctr, Houston (J.G.G.); Dept of Radiology, Univ of Chicago, Ill (M.L.G.); Dept of Radiology, Duke Univ Medical Ctr, Durham, NC (J.A.I.); Dept o...