2,313 research outputs found
Sintered silicon carbide molded body and method for its production
Sintered silicon carbide shapes are described. They are produced by using a composition containing an oxide of at least one element chosen from the group: Li, Be, Mg, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Nb, Mo, Ba, Tc, Ta, W and Th as a supplement to known sintering aids
Magnetic-field effects on the charge-spin stripe order in La-214 high-Tc cuprates
Magnetic-field effects on the charge-spin stripe order in La-214 high-Tc
cuprates have been investigated from measurements of the in-plane
electrical-resistivity, Rho_ab_. In La_2-x_Ba_x_CuO_4_ with x=0.10 and
La_2-x_Sr_x_CuO_4_ with x=0.115 where the incommensurate charge peaks are weak
and unobservable in zero field in elastic neutron-scattering measurements,
respectively, the normal-state value of Rho_ab_ at low temperatures markedly
increases with increasing field up to 27 T. For La_2-x_Ba_x_CuO_4_ with x=0.11
and Zn-substituted La_2-x_Sr_x_Cu_1-y_Zn_y_O_4_ with x=0.115 and y=0.02 where
the charge stripe order is fairly stabilized in zero field, on the other hand,
the increase in Rho_ab_ with increasing field is negligibly small. In
conclusion, when the charge-spin stripe order is not fully stable in zero
field, magnetic field operates to stabilize the charge-spin stripe order. The
value of Rho_ab_ increases with increasing field depending on the stability of
the charge stripe order.Comment: 4 pages, 2 figures, Proceedings of Yamada Conference LX on Research
in High Magnetic Fields (RHMF2006) (Satellite of ICM2006
Measurements of L x-Ray Chemical Influence in Chromium Compounds
開始ページ、終了ページ: 冊子体のページ付
Solvent Extraction Behavior of 96Tc-TTA Complex
開始ページ、終了ページ: 冊子体のページ付
1 um Excess Sources in the UKIDSS - I. Three T Dwarfs in the SDSS Southern Equatorial Stripe
We report the discovery of two field brown dwarfs, ULAS J0128-0041 and ULAS
J0321+0051, and the rediscovery of ULAS J0226+0051 (IfA 0230-Z1), in the Sloan
Digital Sky Survey (SDSS) southern equatorial stripe. They are found in the
course of our follow-up observation program of 1 um excess sources in the
United Kingdom Infrared Telescope Infrared Deep Sky Survey. The Gemini
Multi-Object Spectrographs spectra at red optical wavelengths (6500-10500 A)
are presented, which reveal that they are early-T dwarfs. The classification is
also supported by their optical to near-infrared colors. It is noted that ULAS
J0321+0051 is one of the faintest currently known T dwarfs. The estimated
distances to the three objects are 50-110 pc, thus they are among the most
distant field T dwarfs known. Dense temporal coverage of the target fields
achieved by the SDSS-II Supernova Survey allows us to perform a simple
time-series analysis, which leads to the finding of significant proper motions
of 150-290 mas/yr or the transverse velocities of 40-100 km/s for ULAS
J0128-0041 and ULAS J0226+0051. We also find that there are no detectable,
long-term (a-few-year) brightness variations above a few times 0.1 mag for the
two brown dwarfs.Comment: Accepted for publication in the Astronomical Journal; Typos correcte
Feedback-free optical cavity with self-resonating mechanism
We demonstrated the operation of a high finesse optical cavity without
utilizing an active feedback system to stabilize the resonance. The effective
finesse, which is a finesse including the overall system performance, of the
cavity was measured to be , and the laser power stored in
the cavity was kW, which is approximately 187,000 times greater
than the incident power to the cavity. The stored power was stabilized with a
fluctuation of , and we confirmed continuous cavity operation for more
than two hours. This result has the potential to trigger an innovative
evolution for applications that use optical resonant cavities such as compact
photon sources with laser-Compton scattering or cavity enhanced absorption
spectroscopy.Comment: 5 pages, 7 figure
Determination of Formation Rate Constant of Carrier-Free 111In(III) with EDTA
開始ページ、終了ページ: 冊子体のページ付
Chemical Effects of L X-Ray Intensity Ratios in Niobium and Molybdenum Compounds by Elecron and Proton Bombardments
開始ページ、終了ページ: 冊子体のページ付
Preterm Neonatal Sepsis: Associated Risk Factors and Microbial Profiles at Kitale County Hospital New-born Unit, Western Kenya
Neonatal sepsis is a major concern with maternal and neonatal risk factors greatly being associated with development of neonatal sepsis. In this study, we sort to determine the associated risk factors and microbial profiles at Kitale County Hospital (KCH) new-born unit in Western Kenya. Data was collected from 181 eligible preterm neonates and cultured using standard protocols. A prevalence of 22.7% was found with majority of Gram positive 35 (85.4%) while Gram negative were 6 (14.6%). Coagulase Negative Staphylococcus (CoNS) were 31 (75.6%) with Staphylococcus epidermidis 19 (46.3%) being the majority. Mode of delivery, Prolonged Rupture of Membranes (PROM), foetal distress, low birth weight and poor breast feeding were major risk factors associated with neonatal sepsis at KCH. There is therefore need to assess the correlation between the specific maternal and neonatal risk factors with common circulating bacterial profiles at KCH new born unit. Keywords: Preterm neonate, Neonatal sepsis, New-born unit, Microbial profiles and characteristics. Western Kenya. DOI: 10.7176/JHMN/89-06 Publication date:May 31st 202
- …