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Determination of methyl C13–N15 dipolar couplings in peptides and proteins by three-dimensional and four-dimensional magic-angle spinning solid-state NMR spectroscopy

Jonathan Helmus、Philippe S. Nadaud、Nicole Höfer 等 4 位作者2008-02-01The Journal of Chemical Physics

We describe three- and four-dimensional semiconstant-time transferred echo double resonance (SCT-TEDOR) magic-angle spinning solid-state nuclear magnetic resonance (NMR) experiments for the simultaneous measurement of multiple long-range (15)N-(13)C(methyl) dipolar couplings in uniformly (13)C, (15)N-enriched peptides…

Advanced NMR Techniques and ApplicationsSolid-state spectroscopy and crystallographyNMR spectroscopy and applications

Criteria for improved open-circuit voltage in a-Si:H(N)∕c-Si(P) front heterojunction with intrinsic thin layer solar cells

M. Nath、P. Chatterjee、J. Damon-Lacoste 等 4 位作者2008-02-01Journal of Applied Physics

Hydrog enated amorphous∕crystalline silicon “heterojunction with intrinsic thin layer (HIT)” solar cells have gained popularity after it was demonstrated by Sanyo that they can achieve stable conversion efficiencies, as high as crystalline silicon (c-Si) cells, but where the cost may be reduced with the help of amorph…

Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence

Channel plasmon-polariton modes in V grooves filled with dielectric

K. C. Vernon、Dmitri K. Gramotnev、David Pile2008-02-01Journal of Applied Physics

We investigated the effect of dielectric filling in a V groove on the propagation parameters of channel plasmon-polariton (CPP) modes. In particular, existence conditions and critical groove angles, mode localization, field structure, dispersion, and propagation distances of CPP modes are analyzed as functions of diel…

Plasmonic and Surface Plasmon ResearchPhotonic and Optical DevicesOptical Coatings and Gratings

Generalized Uniform Singlet- and Triplet-Pair Extrapolation of the Correlation Energy to the One Electron Basis Set Limit

A. J. C. Varandas2008-02-01The Journal of Physical Chemistry A

The relationship between the triplet- and singlet-pair interaction coefficients in the uniform singlet- and triplet-pair extrapolation method recently suggested for extrapolating ab initio energies to the one-electron basis set limit is analyzed. Based on the premise that such a ratio is invariant over the configurati…

Advanced Chemical Physics StudiesX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques

Single-step preparation of inverse opal titania films by the doctor blade technique

G. Ruani、Cosimo Ancora、Franco Corticelli 等 5 位作者2008-02-01Solar Energy Materials and Solar Cells

The difficulty to infiltrate solid-state hole semiconductors within micron-thick porous titania films is one of the major limiting factors for the achievement of efficient solid-state dye-sensitized solar cells. It was already shown that through the ordered interconnected pores of an inverse opal, the large surface ar…

TiO2 Photocatalysis and Solar CellsPhotonic Crystals and ApplicationsTransition Metal Oxide Nanomaterials

NEUROSURGERY IN THE REALM OF 10−9, PART 2

J. Bradley Elder、Charles Y. Liu、Michael L.J. Apuzzo2008-02-01Neurosurgery

Neurosurgery in the future will witness an increasing influx of novel technologies, many of which will be based on developments in the emerging science of nanotechnology. Additionally, the continued trend in medicine toward minimally invasive diagnostic and surgical techniques will be aided by incorporation of applica…

Neurogenesis and neuroplasticity mechanismsSupramolecular Self-Assembly in MaterialsAnesthesia and Neurotoxicity Research

Oxygen Consumption of Keloids and Hypertrophic Scars

Shigeru Ichioka、Taichi Ando、Masahiro Shibata 等 5 位作者2008-02-01Annals of Plastic Surgery

The oxygen consumption of keloids and hypertrophic scars has never been quantitatively presented, although abnormal metabolic conditions must be associated with their pathophysiology. We invented an original measurement system equipped with a Clark oxygen electrode for ex vivo samples. The measurement of a mouse wound…

Electrospun Nanofibers in Biomedical ApplicationsDermatologic Treatments and ResearchLaser Applications in Dentistry and Medicine

Highly Efficient Organic Thin-Film Solar Cells Based on Poly(3-hexylthiophene) and Soluble C70 Fullerene Derivative

Toshihiro Yamanari、Tetsuya Taima、Jun Sakai 等 4 位作者2008-02-01Japanese Journal of Applied Physics

The C 70 derivative [6,6]-phenyl-C 71 -butyric acid methyl ester ([70]PCBM) has wider and stronger absorption in the visible light region than the analogous C 60 derivative ([60]PCBM). Using [70]PCBM as an n-type semiconductor in combination with poly(3-hexylthiophene) (P3HT), we successfully fabricated a highly effic…

Organic Electronics and PhotovoltaicsConducting polymers and applicationsFullerene Chemistry and Applications

Near‐field–induced tunability of surface plasmon polaritons in composite metallic nanostructures

A. Christ、Gaëtan Lévêque、Olivier J. F. Martin 等 8 位作者2008-02-01Journal of Microscopy

We numerically study near-field-induced coupling effects in metal nanowire-based composite nanostructures. Our multi-layer system is composed of individual gold nanowires supporting localized particle plasmons at optical wavelengths, and a spatially separated homogeneous silver slab supporting delocalized surface plas…

Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchPhotonic Crystals and Applications

Use of Chromameter‐Measured Color Parameters in Estimating Color‐Related Soil Variables

Hikmet Günal、Sabit Erşahin、B. Yetgin 等 4 位作者2008-02-01Communications in Soil Science and Plant Analysis

Soil color is a soil property that may be used as an interpreting index in estimating processes and properties. Quantifying color allows one to obtain information for rapidly estimating the related processes in soils. CIELAB color parameters L*, a*, and b* of ground (air‐dried and sieved) soil samples and aggregate su…

Soil Geostatistics and MappingClay minerals and soil interactionsGeochemistry and Geologic Mapping

Cloning and characterization of thermostable esterase from Archaeoglobus fulgidus

Seungbum Kim、Won‐Kyu Lee、Yeon‐Woo Ryu2008-02-01The Journal of Microbiology

Thermostable esterase gene was cloned (Est-AF) from extremophilic microorganisms, Archaeoglobus fulgidus DSM 4304. The protein analysis result showed that Est-AF is monomer with total 247 amino acids and molecular weight of estimated 27.5 kDa. It also showed repeating units G-X-S-X-G (GHSLG) (residues 86 approximately…

Enzyme Catalysis and ImmobilizationMicrobial Metabolic Engineering and BioproductionEnzyme Structure and Function

Optimization of a single defect photonic crystal laser cavity

Walter R. Frei、Harley T. Johnson、Kent D. Choquette2008-02-01Journal of Applied Physics

Using nonlinear programing and the geometry projection method, the quality factor of the monopole mode of a single defect photonic crystal laser cavity is improved from 38 000 to 87 000. Beginning with a design that considers only round air holes shifted away from the cavity, the radius of the nearest neighbor and of…

Photonic and Optical DevicesPhotonic Crystals and ApplicationsOptical Coatings and Gratings

Depolarization effect in reflection-mode tip-enhanced Raman scattering for Raman active crystals

Masashi Motohashi、Norihiko Hayazawa、Alvarado Tarun 等 4 位作者2008-02-01Journal of Applied Physics

Reflection-mode tip-enhanced Raman scattering (TERS) has the advantage to characterize any sample, particularly opaque, bulk, and multilayered samples. However, the background signal in reflection-mode TERS is huge due to large focus spots associated with an objective lens that has a long working distance. Moreover, f…

Quantum Dots Synthesis And PropertiesNear-Field Optical MicroscopyIntegrated Circuits and Semiconductor Failure Analysis

Blue organic light-emitting diodes based on Mes2B [p-4,4′-biphenyl-NPh(1-naphthyl)]

Fenghong Li、Wen‐Li Jia、Suning Wang 等 5 位作者2008-02-01Journal of Applied Physics

Here, we report highly efficient blue organic light-emitting diodes (OLEDs) with Mes2B [p-4,4′-biphenyl-NPh(1-naphthyl)] (BNPB) as a blue emitter. It is found that both efficiencies and electroluminescent color are very sensitive to the selection of electron transport materials in the devices. For an optimized structu…

Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchLuminescence and Fluorescent Materials

Controlled Nickel Sulfide Precipitation Using Gaseous Hydrogen Sulfide

Nazneen Karbanee、Robert P. van Hille、Alison Lewis2008-02-01Industrial & Engineering Chemistry Research

In the precipitation of metal sulfides from solution, either aqueous or gaseous sources of sulfide can be used. In this work, batch aqueous and gaseous sulfide experiments confirmed that no precipitation of Ni 2+ was possible when only the H 2 S(aq) sulfide species was available for reaction. Gaseous sulfide precipita…

Calcium Carbonate Crystallization and InhibitionMinerals Flotation and Separation TechniquesIndustrial Gas Emission Control

RDX and HMX with Reduced Sensitivity Towards Shock Initiation–RS‐RDX and RS‐HMX

Øyvind Hammer Johansen、Jørn Digre Kristiansen、Richard Gjersøe 等 7 位作者2008-02-01Propellants Explosives Pyrotechnics

Abstract Reduced Sensitivity RDX (RS‐RDX) has received a lot of attention and interest from the explosive community in the recent years. There are several producers of RS‐RDX, most of them using a direct nitration (Woolwich process) for the RDX synthesis, while Chemring Nobel uses the Bachmann process. The processes f…

Energetic Materials and CombustionHigh-Velocity Impact and Material BehaviorThermal and Kinetic Analysis

Surface Finish Effects on High-Speed Signal Degradation

Xin Wu、Donald P. Cullen、Gary Brist 等 4 位作者2008-02-01IEEE Transactions on Advanced Packaging

In high-speed circuits, skin effects and dielectric properties are important factors for signal degradation considerations, especially in the microwave frequency region. When surface finishes are applied to prevent traces from oxidation, the electrical properties of traces are affected. In this work, experimental stud…

Electronic Packaging and Soldering TechnologiesSemiconductor Lasers and Optical DevicesCopper Interconnects and Reliability

Development trends and Review of free-machining steels

Nelis Evangelista Luiz、Álisson Rocha Machado2008-02-01Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture

This work presents the technologies more widely used to improve the machinability of metal materials, mainly focusing on the free-machining steels. A wide literature and patent review are included with the purpose of presenting the state of the art on free-machining steels.

Advanced machining processes and optimizationAdvanced Surface Polishing TechniquesMetal Alloys Wear and Properties

Energetic Materials: Crystallization, Characterization and Insensitive Plastic Bonded Explosives

A.E.D.M. van der Heijden、Yves Creyghton、E. Marino 等 7 位作者2008-02-01Propellants Explosives Pyrotechnics

Abstract The product quality of energetic materials is predominantly determined by the crystallization process applied to produce these materials. It has been demonstrated in the past that the higher the product quality of the solid energetic ingredients, the less sensitive a plastic bonded explosive containing these…

High-pressure geophysics and materialsEnergetic Materials and CombustionHigh-Velocity Impact and Material Behavior

Topological Classification and Supramolecular Chirality of 21‐Helical Ladder‐Type Hydrogen‐Bond Networks Composed of Primary Ammonium Carboxylates: Bundle Control in 21‐Helical Assemblies

T. Yuge、Tatsuya Sakai、Nobuyasu Kai 等 6 位作者2008-02-01Chemistry - A European Journal

The supramolecular chirality of 1D ladder-type hydrogen-bond networks composed of primary ammonium carboxylates was determined based on topological considerations. Chirality in such networks is based on the absolute configuration of the primary ammonium cation, which arises from discrimination between the two oxygen a…

Crystallography and molecular interactionsSupramolecular Self-Assembly in MaterialsMolecular spectroscopy and chirality