Publications by authors named "D S Grubb"

Small-angle X-ray and neutron scattering (SAXS and SANS) patterns from certain semicrystalline polymers and liquid crystals contain discrete reflections from ordered assemblies and central diffuse scattering (CDS) from uncorrelated structures. Systems with imperfectly ordered lamellar structures aligned by stretching or by a magnetic field produce four distinct SAXS patterns: two-point 'banana', four-point pattern, four-point 'eyebrow' and four-point 'butterfly'. The peak intensities of the reflections lie not on a layer line, or the arc of a circle, but on an elliptical trajectory.

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Article Synopsis
  • A new study explored how the kidneys eliminate molecules of different sizes using a human model during Transcatheter Aortic Valve Implantation (TAVI) on 45 patients.
  • * Researchers measured the renal elimination ratio (RER) of various molecules, finding that smaller molecules like creatinine had a higher RER compared to larger ones like troponin-T, revealing a threshold for elimination between 36 and 44 kDa.
  • * The study concluded that the RERs of creatinine and cystatin C correlate with estimated glomerular filtration rate (eGFR), highlighting the model's usefulness in understanding selective glomerular hypofiltration syndromes.
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Lignocellulosic sulfate-reducing biochemical reactors (SRBRs) can be implemented as passive treatment for mining-influenced water (MIW) mitigating the potentially deleterious effects of MIW acidic pH, and high concentrations of metal(loid)s and SO. In this study, a novel two-stage treatment for MIW was designed, where basic oxygen furnace slag (slag stage) and microbial SO reduction (SRBR stage) were incorporated in series. The SRBRs contained spent brewing grains or sugarcane bagasse as sources of lignocellulose.

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Article Synopsis
  • Doctors often check kidney function using two markers: creatinine and cystatin C.
  • In 2010, using both markers together helped discover new kidney problems called selective glomerular hypofiltration syndromes, which are serious and can increase the risk of illness and death.
  • The current guidelines don’t recommend cystatin C as a main marker, so many patients with these kidney issues might not be identified; experts believe cystatin C should be included in future guidelines.
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