Novel porous materials based on oligospiroketals (OSK)
New materials with moderately high porosity are accessible by polyacetalization under very mild conditions.
Materials Literature
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An Investigation of Proton Conductivity of Vinyltriazole-Grafted PVDF Proton Exchange Membranes Prepared via Photoinduced Grafting
Proton exchange membrane fuel cells (PEMFCs) are considered to be a promising technology for clean and efficient power generation in the twenty-first century. In this study, high performance of poly(vinylidene fluoride) (PVDF) and proton conductivity of poly(1-vinyl-1,2,4-triazole) (PVTri) were combined in a graft cop…
Experimental Studies of Heat Transfer Characteristics and Properties of the Cross-Flow Pipe Flow Melt Lead
The process of heat transfer in a HLMC cross-flow around heat-transfer tubes is not yet thoroughly studied. Therefore, it is of great interest to carry out experimental studies for determining the heat transfer characteristics in a lead coolant cross-flow around tubes. It is also interesting to explore the velocity an…
Broadband Low-power Optical Modulator Based on Electro-optic Polymer Infiltrated Silicon Slot Photonic Crystal Waveguide
We demonstrate a broadband, low-dispersion, sub-volt and compact optical modulator based on electro-optic polymer infiltrated silicon slot photonic crystal waveguide. Modulation up to 43GHz, Vπ×L=0.282V×mm, and optical bandwidth of 8nm are experimentally demonstrated.
Conversion of Nuclear Waste into Nuclear Waste Glass: Experimental Investigation and Mathematical Modeling
The melter feed, slurry, or calcine charged on the top of a pool of molten glass forms a floating layer of reacting material called the cold cap. Between the cold-cap top, which is covered with boiling slurry, and its bottom, where bubbles separate it from molten glass, the temperature changes by up to 1000 K. The pro…
Noncovalent assembly of carbon nanoparticles and aptamer for sensitive detection of ATP
Here base on competitive interaction of electrostatic repulsion and π–π stacking, noncovalent assembly of carbon nanoparticles (cCNPs) with aptamer that allows sensitive and selective detection of ATP is reported. The sensor exhibits minimal background fluorescence and rapid kinetics response depending on the spherica…
Preparation of dense mullite polycrystals by reaction sintering of kaolin materials and alumina and their microstructure
Dense and single-phase mullite polycrystals were prepared by reaction sintering of relatively pure kaolins with several kinds of alumina. Removal of coarse kaolin particles >1 µm by sedimentation substantially improved thermal reactivity and sinterability of kaolin and its mixtures with alumina. As for mixtures of ref…
Maytansine-loaded star-shaped folate-core PLA-TPGS nanoparticles enhancing anticancer activity.
The efficient delivery of therapeutic molecule agents into target cells of interest is a critical challenge to broad application of non-viral vector systems. In this research, maytansine-loaded star-shaped folate-core polylactide-D-α-tocopheryl polyethylene glycol 1000 succinate (FA-PLA-TPGS) block copolymer was appli…
Substrate and p-layer effects on polymorphous silicon solar cells
The influence of textured transparent conducting oxide (TCO) substrate and p-layer on the performance of single-junction hydrogenated polymorphous silicon (pm-Si:H) solar cells has been addressed. Comparative studies were performed using p-i-n devices with identical i/n-layers and back reflectors fabricated on texture…
CO 2 -triggered release from switchable surfactant impregnated liposomes
Incorporation of an amidine-based switchable surfactant into the lipid membrane of a liposome produces a system that is capable of triggered release upon in situ exposure to CO 2 . The amount of liposomal contents released is dependent on the concentration of switchable surfactant incorporated.
Identification of Best Protein Crystallization Methods by Molecular Dynamics (MD)
A full-atom structure of a protein provides an important piece of information for molecular biologists, but has to be complemented by further knowledge concerning its conformational mobility and functional properties. Some scholars have proposed to integrate proteomics-derived data (mainly obtained with techniques lik…
Trace vapour detection at room temperature using Raman spectroscopy
A miniaturized flow-through system consisting of a gold coated silicon substrate based on enhanced Raman spectroscopy has been used to study the detection of vapour from model explosive compounds. The measurements show that the detectability of the vapour molecules at room temperature depends sensitively on the intera…
Status quo and development trend of lost foam casting technology
Lost foam casting(LFC)technology has been widely applied to cast iron and cast steel.However,the development of LFC for Al and Mg alloys was relatively slower than that for cast iron and cast steel.The application of LFC to Al and Mg alloys needs more effort,especially in China.In this paper,the development history of…
Nanotechnologies in Agriculture and Food
The provision of food is a critical factor in ensuring good quality of life. The developing world struggles to produce sufficient food and to deliver it to a growing population, while for the developed world there is a need to provide safe foods over longer, and increasingly globalized, food chains. Europe is potentia…
Effect of Annealing on the Structure and Hardness of Electrodeposited Ni-W Alloys
Electrodeposition of Ni-W alloys was conducted from an unagitated sulfate solution containing citric acid at pH 5 and 60 ºC under coulostatic (3.44×105–6.22×105 C/m2) and galvanostatic (30-5000 A/m2) conditions. Before annealing, the lattice constant of Ni increased linearly with an increase in the W content up to 40.…
Enhanced performance of organic light-emitting diodes by using PTB7 as anode modification layer
Poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b’]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3, 4-b]thiophenediyl]] (PTB7) is used as an anode modification layer to fabricate organic light-emitting diode (OLED) with the configuration of ITO/PTB7 (with different concentrations)/NPB(40 nm)/Alq3(60…
Measurement of Muon Neutrino Quasi-Elastic Scattering on a Hydrocarbon Target at Eν ∼ 3.5 GeV
Abstract Not Provided
Fullerene-containing macromolecular structures based on amphiphilic N-vinylpyrrolidone copolymers: Preparation and characterization
Fullerene-containing macromolecular structures have been obtained via aggregation of polymer colloids (micelles and intermicellar clusters), formed by amphiphilic of N -vinylpyrrolidone copolymers in isopropyl alcohol, with C 60 fullerene dissolved in toluene. Their structure and behavior in solution have been investi…
Dissimilar metals joining of steel and aluminum alloy by resistance spot welding
This research describes a dissimilar metals joining of steel and aluminum (Al) alloy by means of zinc (Zn) insertion. The authors proposed a joining concept for achieving strong bonded joints between Zn coated steel and Al alloy. A eutectic reaction between Zn in the Zn coating and Al in Al alloy is used to remove the…
Microalloying of Fe-Cr by using Ultrasonic Irradiation
In this work the formation of Fe-Cr microalloy by ultrasonic irradiation at a frequency of 20 kHz is presented. Two sample series were produced with different ultrasonic irradiation procedures. For the first sample, Fe and Cr powder were each separately brought into the ultrasonic device before they were mixed in 7:1…