195 research outputs found
JURY-EFFECT OF DEVIATION FROM STATUTORY PROCEDURE FOR EXCUSING JURORS
In a prosecution for murder, a special venire was summoned and a list thereof served on the accused. On the day of trial, he learned for the first time that the trial judge had excused twenty-six of the seventy-four veniremen summoned. The excuses out of court violated a statute requiring that all requests for excuse be heard in open court. More than the minimum number of veniremen were present, and when it appeared that the original array might be exhausted thirty additional veniremen were called. Accused\u27s motions to quash the jury panel and for a mistrial were overruled. On appeal from conviction, held, affirmed. The statute was directory only, and mere irregularity was not reversible error where there was no showing of fraud or prejudice to the accused. Two justices dissented. Parker v. State, (Miss. 1947) 29 S. (2d) 910
Extra-planar gas in the spiral galaxy NGC 4559
We present 21-cm line observations of the spiral galaxy NGC 4559, made with
the Westerbork Synthesis Radio Telescope. We have used them to study the HI
distribution and kinematics, the relative amount and distribution of luminous
and dark matter in this galaxy and, in particular, the presence of extra-planar
gas. Our data do reveal the presence of such a component, in the form of a
thick disk, with a mass of 5.9 x 10^8 Mo (one tenth of the total HI mass) and a
mean rotation velocity 25-50 km/s lower than that of the thin disk. The
extra-planar gas may be the result of galactic fountains but accretion from the
IGM cannot be ruled out. With this study we confirm that lagging, thick HI
layers are likely to be common in spiral galaxies.Comment: 17 pages, 10 figures. Accepted for publication in A&
DustPedia: Multiwavelength photometry and imagery of 875 nearby galaxies in 42 ultraviolet-microwave bands
Aims. The DustPedia project is capitalising on the legacy of the Herschel Space Observatory, using cutting-edge modelling techniques to study dust in the 875 DustPedia galaxies – representing the vast majority of extended galaxies within 3000 km s-1 that were observed by Herschel. This work requires a database of multiwavelength imagery and photometry that greatly exceeds the scope (in terms of wavelength coverage and number of galaxies) of any previous local-Universe survey.
Methods. We constructed a database containing our own custom Herschel reductions, along with standardised archival observations from GALEX, SDSS, DSS, 2MASS, WISE, Spitzer, and Planck. Using these data, we performed consistent aperture-matched photometry, which we combined with external supplementary photometry from IRAS and Planck.
Results. We present our multiwavelength imagery and photometry across 42 UV-microwave bands for the 875 DustPedia galaxies. Our aperture-matched photometry, combined with the external supplementary photometry, represents a total of 21 857 photometric measurements. A typical DustPedia galaxy has multiwavelength photometry spanning 25 bands. We also present the Comprehensive & Adaptable Aperture Photometry Routine (CAAPR), the pipeline we developed to carry out our aperture-matched photometry. CAAPR is designed to produce consistent photometry for the enormous range of galaxy and observation types in our data. In particular, CAAPR is able to determine robust cross-compatible uncertainties, thanks to a novel method for reliably extrapolating the aperture noise for observations that cover a very limited amount of background. Our rich database of imagery and photometry is being made available to the community
Extra-planar HI in the starburst galaxy NGC 253
Observations of the nearby starburst galaxy NGC 253 in the 21-cm line reveal
the presence of neutral hydrogen in the halo, up to 12 kpc from the galactic
plane. This extra-planar HI is found only in one half of the galaxy and is
concentrated in a half-ring structure and plumes which are lagging in rotation
with respect to the disk. The HI plumes are seen bordering the bright Halpha
and X-ray halo emission. It is likely that, as proposed earlier for the Halpha
and the X-rays, also the origin of the extra-planar HI is related to the
central starburst and to the active star formation in the disk. A minor merger
and gas accretion are also discussed as possible explanations.
The HI disk is less extended than the stellar disk. This may be the result of
ionization of its outer parts or, alternatively, of tidal or ram pressure
stripping.Comment: 8 pages, 8 figures, to appear in A&A. A high resolution version can
be found at http://www.astro.rug.nl/~boomsma/publications
Shocked Molecular Gas in the Supernova Remnants W 28 and W 44: Near-infrared and millimeter-wave observations
High resolution millimeter-wave and near-infrared observations of the
supernova remnants W28 and W44 reveal extensive shocked molecular gas where
supernova blast waves are propagating into giant molecular clouds. New CO
observations were carried out with the IRAM 30-m and ARO 12-m telescopes, and
the near-infrared observations were with Palomar 200-inch telescope. The
near-infrared observations reveal shocked H2 emission from both supernova
remnants, showing intricate networks of filaments on arcsec scales, following
the bright ridges of the radio shells. The CO and CS linewidths, indicative of
the shock speed, are 20-30 km/s. Both the near-infrared and millimeter-wave
emission are attributed to shocks into gas with density >1e3 cm-3. Individual
shock structures are resolved in the H2 emission, with inferred edge-on shock
thickness ~1e17 cm, consistent with non-dissociative shocks into gas densities
of 1e3-1e4 cm-3. Bright 1720 MHz OH masers are located within the shocked H2
gas complexes and highlight only localized areas where the conditions for
masing are optimal. The Halpha and X-ray emission, have morphologies very
different from the radio. We find a detailed correlation of the radio and H2
emission for some long filaments, indicating cosmic ray acceleration or
re-acceleration due to the shocks into moderately dense gas. The different
morphologies of these two remnants at different wavelengths is explained by a
highly nonuniform structure for giant molecular clouds.Comment: ApJ, in press; several figures in jpg for
Synthesis, characterization, DNA binding, topoisomerase inhibition, and apoptosis induction studies of a novel cobalt(III) complex with a thiosemicarbazone ligand
In this study, 9-anthraldehyde-N(4)-methylthiosemicarbazone (MeATSC) 1 and [Co(phen)(OCO)]Cl·6HO 2 (where phen = 1,10-phenanthroline) were synthesized. [Co(phen)(OCO)]Cl·6HO 2 was used to produce anhydrous [Co(phen)(HO)](NO)3. Subsequently, anhydrous [Co(phen)(HO)](NO)3 was reacted with MeATSC 1 to produce [Co(phen)(MeATSC)](NO)·1.5HO·CHOH 4. The ligand, MeATSC 1 and all complexes were characterized by elemental analysis, FT IR, UV-visible, and multinuclear NMR (H, C, and Co) spectroscopy, along with HRMS, and conductivity measurements, where appropriate. Interactions of MeATSC 1 and complex 4 with calf thymus DNA (ctDNA) were investigated by carrying out UV-visible spectrophotometric studies. UV-visible spectrophotometric studies revealed weak interactions between ctDNA and the analytes, MeATSC 1 and complex 4 (K = 8.1 × 10 and 1.6 × 10 M, respectively). Topoisomerase inhibition assays and cleavage studies proved that complex 4 was an efficient catalytic inhibitor of human topoisomerases I and IIα. Based upon the results obtained from the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay on 4T1-luc metastatic mammary breast cancer cells (IC = 34.4 ± 5.2 μM when compared to IC = 13.75 ± 1.08 μM for the control, cisplatin), further investigations into the molecular events initiated by exposure to complex 4 were investigated. Studies have shown that complex 4 activated both the apoptotic and autophagic signaling pathways in addition to causing dissipation of the mitochondrial membrane potential (ΔΨ). Furthermore, activation of cysteine-aspartic proteases3 (caspase 3) in a time- and concentration-dependent manner coupled with the ΔΨ, studies implicated the intrinsic apoptotic pathway as the major regulator of cell death mechanism
Real-Time Self-Regulation of Emotion Networks in Patients with Depression
Many patients show no or incomplete responses to current pharmacological or psychological therapies for depression. Here we explored the feasibility of a new brain self-regulation technique that integrates psychological and neurobiological approaches through neurofeedback with functional magnetic resonance imaging (fMRI). In a proof-of-concept study, eight patients with depression learned to upregulate brain areas involved in the generation of positive emotions (such as the ventrolateral prefrontal cortex (VLPFC) and insula) during four neurofeedback sessions. Their clinical symptoms, as assessed with the 17-item Hamilton Rating Scale for Depression (HDRS), improved significantly. A control group that underwent a training procedure with the same cognitive strategies but without neurofeedback did not improve clinically. Randomised blinded clinical trials are now needed to exclude possible placebo effects and to determine whether fMRI-based neurofeedback might become a useful adjunct to current therapies for depression
Deficient Induction Response in a Xenopus Nucleocytoplasmic Hybrid
Defects in induction signaling and response underlie the nucleocytoplasmic incompatibility between two evolutionarily distant frog species, while specific treatments partially restore this response in explants and whole embryos
Amyloid in the islets of Langerhans: Thoughts and some historical aspects
Deposition of amyloid, derived from the polypeptide hormone islet amyloid polypeptide (IAPP; ‘amylin’) is the single most typical islet alteration in type 2 diabetes. Islet amyloid was described as hyalinization already in 1901, but not until 1986 was it understood that it is a polymerization product of a novel β-cell regulatory product. The subject of this focused review deals with the pathogenesis and importance of the islet amyloid itself, not with the biological effect of the polypeptide. Similar to the situation in Alzheimer's disease, it has been argued that the amyloid may not be of importance since there is no strict correlation between the degree of islet amyloid infiltration and the disease. However, it is hardly discussable that the amyloid is important in subjects where islets have been destroyed by pronounced islet amyloid deposits. Even when there is less islet amyloid the deposits are widely spread, and β-cells show ultrastructural signs of cell membrane destruction. It is suggested that type 2 diabetes is heterogeneous and that in one major subtype aggregation of IAPP into amyloid fibrils is determining the progressive loss of β-cells. Interestingly, development of islet amyloid may be an important event in the loss of β-cell function after islet transplantation into type 1 diabetic subjects
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