Materials Literature
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Toxicity of nanomaterials is one of the biggest challenges in their medicinal applications. Although toxicities of nanomaterials have been widely reported, the exact mechanisms of toxicities are still not well elucidated. Consequently, the exploration of approaches to attenuate toxicities of nanomaterials is limited.…
A zeolite@metal–organic framework (ZSM-5@UiO-66) core–shell composite has been synthesized for the first time by solvothermal growth of UiO-66 on the surface of ZSM-5 particles. The acidity from ZSM-5 and the basicity from the amine groups in UiO-66 obtained by post-synthetic modification of the metal clusters, endow…
Incisional hernia affects up to 20% of patients after abdominal surgery. Unlike other types of hernia, its prognosis is poor, and patients suffer from recurrence within 10 years of the operation. Currently used hernia-repair meshes do not guarantee success, but only extend the recurrence-free period by about 5 years.…
Abstract A new earth-abundant element material Cu2MgSnS4 was synthesized by hot-injection methods. X-ray diffraction, Raman spectroscopy, and transmission electron microscopy elucidated that as-prepared nanoparticles are Kesterite Cu2MgSnS4 without binary compounds coexisting. Scanning transmission electron microscopy…
A new strategy for creating enzyme-responsive hydrogels by employing an N-hydroxyimide–heparin conjugate, designed to act as both an enzyme-mediated radical initiator and an enzyme-sensitive therapeutic carrier, is described. A novel enzyme-mediated redox initiation system involving glucose oxidase (GOx), an N-hydroxy…
Structural, elastic, electronic and optical properties of zinc-chalcogenides (viz. ZnX, X = S, Se and Te) are studied in zinc-blende structure under hydrostatic pressure using the full-potential linearized augmented plane wave method. Generalized gradient approximation is used for exchange correlation potentials. Pres…
Ions of inorganic salts are known to affect bubble coalescence via ion size, charge density and polarizability. In this paper, a systematic study of the effect of monovalent anions (F − , Cl − , Br − and I − ) and cations (Li + , Na + and K + ) on the lifetime of liquid films between two bubble surfaces is carried out…
Abstract A porous metal–organic framework (MOF), [Ni2(dobdc)(H2O)2]⋅6 H2O (Ni2(dobdc) or Ni‐MOF‐74; dobdc4−=2,5‐dioxido‐1,4‐benzenedicarboxylate) with hexagonal channels was synthesized using a microwave‐assisted solvothermal reaction. Soaking Ni2(dobdc) in sulfuric acid solutions at different pH values afforded new p…
An electrochemical biosensing platform was developed based on glucose oxidase (GOx)/Fe 3 O 4 - reduced graphene oxide (Fe 3 O 4 -RGO) nanosheets loaded on the magnetic glassy carbon electrode (MGCE). With the advantages of the magnetism, conductivity and biocompatibility of the Fe 3 O 4 -RGO nanosheets, the nanocompos…
Solid-liquid phase change materials (PCMs) are attractive candidates for thermal energy storage and electronics cooling applications but have limited applicability in state-of-the-art technologies due to their low intrinsic thermal conductivities. Recent efforts to incorporate graphene and multilayer graphene into PCM…
The four chelate polymer complexes commonly called as coordination polymers of Mn(II), Co(II), Ni(II) and Cu(II) ions with fbpmpc (fbpmpc = fumaroyl bis (paramethoxyphenylcarbamide)) were synthesized and characterised by elemental analyses, infrared spectroscopy, diffuse reflectance, magnetic moment susceptibility, th…
BACKGROUND: Artifical nerve scaffold can be used as a promising alternative to autologous nerve grafts to enhance the repair of peripheral nerve defects. However, current nerve scaffolds lack efficient microstructure and neurotrophic support. METHODS: Microsphere-Scaffold composite was developed by incorporating chito…
Zirconia powder was synthesized via a sol gel method and placed in a batch reactor for cesium removal investigation. X-ray analysis and Fourier transform infrared spectroscopy were utilized for the evaluation of the developed adsorbent. The adsorption process has been investigated as a function of pH, contact time and…
Currently multiresistant Staphylococcus aureus is one common cause of infections with high rates of morbidity and mortality worldwide, which directs scientific endeavors in search for novel antimicrobials. In this study, nine extracts from Bidens pilosa (root, stem, flower and leaves) and Annona crassiflora (rind frui…
Abstract A spiro compound DPAA-AF combining an electron-accepting diazafluorene unit and an electron-donating bis(diphenylamino)acridane unit has been synthesized and used as an emitter in organic light-emitting diodes. DPAA-AF exhibits efficient thermally activated delayed fluorescence, and a device based on this com…
BACKGROUND: Clostridium clariflavum is an anaerobic, thermophilic, Gram-positive bacterium, capable of growth on crystalline cellulose as a single carbon source. The genome of C. clariflavum has been sequenced to completion, and numerous cellulosomal genes were identified, including putative scaffoldin and enzyme subu…
The creep behavior of crystalline materials at low temperatures (T < 0.3Tm) is discussed. In particular, the phenomenological relationships that describe primary creep are reviewed and analyzed. A discussion of the activation energy for creep at T < 0.3Tm is discussed in terms of the context of higher temperature acti…
Kinetics analysis of hematite (Fe 2 O 3 ) reduction by hydrogen was evaluated by the thermogravimetric analyser (TGA) in the temperature range of 700–950 °C, using continuous streams of 5, 10, and 20% H 2 concentrations in N 2 . A number of kinetic models have been considered, including the single and multi-step model…
The nonlinear absorption of Ag atomic clusters and nanoparticles dispersed in a transparent oxyfluoride glass host has been studied. The as-prepared glass, containing 0.15 atom % Ag, shows an absorption band in the UV/violet attributed to the presence of amorphous Ag atomic nanoclusters with an average size of 1.2 nm.…
Marius Steigmann, DDS/Alberto Monje, DDS/Hsun-Liang Chan, DDS, MS/Hom-Lay Wang, DDS, MS, PhD: One of the most challenging tasks in implant dentistry is to fulfill the esthetic expectations of patients. While implant positioning and adequate amounts of soft and hard tissues are essential for achieving an esthetic outco…