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Página 1 desde 35 resultados
The Application of Methylprednisolone Nanoscale Zirconium-Porphyrin Metal-Organic Framework (MPS-NPMOF) in the Treatment of Photoreceptor Degeneration.
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From Type-II Triply Degenerate Nodal Points and Three-Band Nodal Rings to Type-II Dirac Points in Centrosymmetric Zirconium Oxide.
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Using first-principles calculations, we report that ZrO is a topological material with the coexistence of three pairs of type-II triply degenerate nodal points (TNPs) and three nodal rings (NRs), when spin-orbit coupling (SOC) is ignored. Noticeably, the TNPs reside around the Fermi energy with a
Cartilage degeneration in the goat knee caused by treating localized cartilage defects with metal implants.
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OBJECTIVE
The purpose of the current study was to investigate the feasibility of applying defect-size femoral implants for the treatment of localized cartilage defects in a 1-year follow-up model.
METHODS
In 13 goats, a medial femoral condyle defect was created in both knees. Defects were randomly
Improved bactericidal activity of silver-loaded zirconium phosphate in the presence of Cl- by combining with hydroxyapatite.
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Silver-loaded zirconium phosphate (AgZ) was combined with hydroxyapatite (HA) to prepare an antibacterial composite (AgZ/HA) with improved activity in the presence of Cl-. When Escherichia coli cells were deactivated in 154 mM NaCl, the bacterial survival ratio at 90 min for AgZ/HA was 3.9 x 10(-4)
Comparison of coagulation performance and floc properties using a novel zirconium coagulant against traditional ferric and alum coagulants.
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Coagulation in drinking water treatment has relied upon iron (Fe) and aluminium (Al) salts throughout the last century to provide the bulk removal of contaminants from source waters containing natural organic matter (NOM). However, there is now a need for improved treatment of these waters as their
The effect of physiologic aqueous solutions on the perovskite material lead-lanthanum-zirconium titanate (PLZT): potential retinotoxicity.
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BACKGROUND
Perovskite compounds, including lead-lanthanum-zirconium titanate (PLZT), have wide technological application because of their unique physical properties. The use of PLZT in neuro-prosthetic systems, such as retinal implants, has been discussed in a number of publications. Since inorganic
Effects of two-phase reactions on composition and potential response of zirconium(IV)-tetraphenylporphyrin complexes as carrier for citrate-selective electrode.
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The reactions between zirconium(IV)-tetraphenylporphyrin(tpp)-hydroxide complexes ([ZrIV2(OH)4(tpp)2] and [ZrIV(OH)2(tpp)]) in chlorobenzene and various acids (HX: HClO4, HCl, HNO3, CH3COOH) in water were studied. Three species [ZrIV2(OH)3(tpp)2],X, [ZrIV(OH)X(tpp)], and [ZrIVX2(tpp)] were
Glucose sensor based on glucose oxidase immobilized by zirconium phosphate.
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Amperometric glucose sensors were fabricated using glucose oxidase (GOx) entrapped in zirconium hydrogenphosphate (ZrP), and their performance was evaluated. Reportedly, alpha-ZrP is one of the candidates that are expected to improve the stability of enzymes immobilized on solid surfaces. We
Mechanical properties of zirconium alloys and zirconium hydrides predicted from density functional perturbation theory.
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The elastic properties and mechanical stability of zirconium alloys and zirconium hydrides have been investigated within the framework of density functional perturbation theory. Results show that the lowest-energy cubic Pn3[combining macron]m polymorph of δ-ZrH1.5 does not satisfy all the Born
Enhanced trace phosphate removal from water by zirconium(IV) loaded fibrous adsorbent.
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This study was investigated for the trace phosphate removal at high feed flow rate by ligand exchange fibrous adsorbent. The zirconium(IV) loaded bifunctional fibers containing both phosphonate and sulfonate were used as a highly selective ligand exchange adsorbent for trace phosphate removal from
Articular cartilage degeneration following the treatment of focal cartilage defects with ceramic metal implants and compared with microfracture.
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BACKGROUND
Localized cartilage defects are frequently associated with joint pain, reduced function, and a predisposition to the development of osteoarthritis. The purposes of the current study were to investigate the feasibility of the application of defect-sized femoral implants for the treatment
Articulation of Native Cartilage Against Different Femoral Component Materials. Oxidized Zirconium Damages Cartilage Less Than Cobalt-Chrome.
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Oxidized zirconium (OxZr) is produced by thermally driven oxidization creating an oxidized surface with the properties of a ceramic at the top of the Zr metal substrate. OxZr is much harder and has a lower coefficient of friction than cobalt-chrome (CoCr), both leading to better wear
Eradicating negative-set behavior of TiO2-based devices by inserting an oxygen vacancy rich zirconium oxide layer for data storage applications.
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Memristors, with low energy consumption, long data storage and fast switching speed, are considered promising for applications such as terabit data storage memory and hardware based neurocomputation applications. However, unexpected negative-Set behavior is a serious issue that causes deterioration
Long term water storage deteriorates bonding of composite resin to alumina and zirconia short communication.
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Objective of this study was to evaluate the effects of long term water storage and ageing on the bond strength of resin composite cement to yttria-stabilized zirconium dioxide (zirconia) and dialuminium trioxide (alumina). Substrate specimens of alumina and zirconia were air particle abraded with
The influence of bone and bone cement debris on counterface roughness in sliding wear tests of ultra-high molecular weight polyethylene on stainless steel.
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Studies of explanted hip prostheses have shown high wear rates of ultra-high molecular weight polyethylene (UHMWPE) acetabular cups and roughening of the surface of the metallic femoral head. Bone and bone cement particles have also been found in the articulating surfaces of some joints. It has been
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