9,490 research outputs found
Legal Context for Construction of Bristol Veterans\u27 Home Universally-Accessible Fishing Pier
This study reviews the legal requirements governing design and construction of a proposed universally-accessible fishing pier located at the Rhode Island Veterans’ Home in Bristol, Rhode Island. The pier would provide veterans and other members of the public with accessible recreational fishing opportunities. However, federal, state, and local approvals will be required before the project can move forward. This study provides an overview of required permitting and approvals by the Coastal Resources Management Council (CRMC), Town of Bristol, and U.S. Army Corps of Engineers (USACE). In addition, it considers the role of the Rhode Island Department of Environmental Management (RIDEM) and federal Americans with Disabilities Act (ADA)
Human ascariasis: diagnostics update
Soil-transmitted helminths (STHs) infect over one billion people worldwide. Ascariasis may mimic a number of conditions, and individual clinical diagnosis often requires a thorough work-up. Kato-Katz thick smears are the standard detection method for Ascaris and, despite low sensitivity, are often used for mapping and monitoring and evaluation of national control programmes. Although increased sampling (number of stools) and diagnostic (number of examinations per stool) efforts can improve sensitivity, Kato-Katz is less sensitive than other microscopy methods such as FLOTAC®. Antibody-based diagnostics may be a sensitive diagnostic tool; however, their usefulness is limited to assessing transmission in areas aiming for elimination. Molecular diagnostics are highly sensitive and specific, but high costs limit their use to individual diagnosis, drug - efficacy studies and identification of Ascaris suum. Increased investments in research on Ascaris and other STHs are urgently required for the development of diagnostic assays to support efforts to reduce human suffering caused by these infections
Microwave conductivity of heavy fermions in UPd2Al3
Heavy-fermion compounds are characterized by electronic correlation effects
at low energies which can directly be accessed with optical spectroscopy. Here
we present detailed measurements of the frequency- and temperature-dependent
conductivity of the heavy-fermion compound UPd2Al3 using broadband microwave
spectroscopy in the frequency range 45 MHz to 40 GHz at temperatures down to
1.7 K. We observe the full Drude response with a relaxation time up to 50 ps,
proving that the mass enhancement of the heavy charge carriers goes hand in
hand with an enhancement of the relaxation time. We show that the relaxation
rate as a function of temperature scales with the dc resistivity. We do not
find any signs of a frequency-dependent relaxation rate within the addressed
frequency range.Comment: 14 pages, 4 figure
Superconductivity of SrTiO_{3-\delta}
Superconducting SrTiO_{3-\delta} was obtained by annealing single crystalline
SrTiO_3 samples in ultra high vacuum. An analysis of the V(I) characteristics
revealed very small critical currents I_c which can be traced back to a
unavoidable doping inhomogeneity. R(T) curves were measured for a range of
magnetic fields B at I<<I_c, thereby probing only the sample regions with the
highest doping level. The resulting curves B_{c2}(T) show upward curvature,
both at small and strong doping. These results are discussed in the context of
bipolaronic and conventional superconductivity with Fermi surface anisotropy.
We conclude that the special superconducting properties of SrTiO_{3-\delta} can
be related to its Fermi surface and compare this finding with properties of the
recently discovered superconductor MgB_2.Comment: EPJ style, 6 pages, 8 figures; minor changes, Fig. 5 replaced; use
PDF version for printout
- …