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Detection and Spectroscopy of Gold Nanoparticles Using Supercontinuum White Light Confocal Microscopy

Klas Lindfors、T. Kalkbrenner、Patrick Stoller 等 4 位作者2004-07-01OpenAlex

We combine confocal microscopy using supercontinuum laser illumination and an interferometric detection technique to identify single nanoparticles of diameter below 10 nm. Spectral analysis of the signal allows us to record the plasmon resonance of a single nanoparticle. Our results hold great promise for fundamental…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchAdvanced Fluorescence Microscopy Techniques

Reinforcing Epoxy Polymer Composites Through Covalent Integration of Functionalized Nanotubes

Jiang Zhu、Haowei Peng、Fernando J. Rodríguez-Macías 等 8 位作者2004-07-01OpenAlex

Abstract Strong interfacial bonding and homogenous dispersion have been found to be necessary conditions to take full advantage of the extraordinary properties of nanotubes for reinforcement of composites. We have developed a fully integrated nanotube composite material through the use of functionalized single‐walled…

Carbon Nanotubes in CompositesConducting polymers and applicationsTribology and Wear Analysis

Biopolymer-Based Antimicrobial Packaging: A Review

Dong Su、Manjeet S. Chinnan2004-07-01OpenAlex

The term antimicrobialpackaging encompasses any packaging technique(s) used to control microbial growth in a food product. These include packaging materials and edible films and coatings that contain antimicrobial agents and also techniques that modify the atmosphere within the package. In recent years, antimicrobial…

Postharvest Quality and Shelf Life ManagementConsumer Packaging Perceptions and TrendsNanocomposite Films for Food Packaging

ENGINEERING PRINCIPLES OF CLINICAL CELL-BASED TISSUE ENGINEERING

George F. Muschler、Chizu Nakamoto、Linda G. Griffith2004-07-01OpenAlex

Tissue engineering is a rapidly evolving discipline that seeks to repair, replace, or regenerate specific tissues or organs by translating fundamental knowledge in physics, chemistry, and biology into practical and effective materials, devices, systems, and clinical strategies. Stem cells and progenitors that are capa…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative Medicine

STRIDE: a web server for secondary structure assignment from known atomic coordinates of proteins

Matthias Heinig、Dmitrij Frishman2004-07-01OpenAlex

STRIDE is a software tool for secondary structure assignment from atomic resolution protein structures. It implements a knowledge-based algorithm that makes combined use of hydrogen bond energy and statistically derived backbone torsional angle information and is optimized to return resulting assignments in maximal ag…

RNA and protein synthesis mechanismsEnzyme Structure and FunctionProtein Structure and Dynamics

MOLPROBITY: structure validation and all-atom contact analysis for nucleic acids and their complexes

Ian Davis、Louann W. Murray、Jane S. Richardson 等 4 位作者2004-07-01OpenAlex

MolProbity is a general-purpose web service offering quality validation for three-dimensional (3D) structures of proteins, nucleic acids and complexes. It provides detailed all-atom contact analysis of any steric problems within the molecules and can calculate and display the H-bond and van der Waals contacts in the i…

Enzyme Structure and FunctionCrystallography and molecular interactionsProtein Structure and Dynamics

Optimisation of the acidulation process of soapstock from the neutralisation of rice bran oil

Eliete Malfatti Serra Scavariello、D. Barrera‐Arellano2004-06-30Grasas y Aceites

Soapstock from the neutralisation of rice bran oil was characterised through the most important parameters with direct influence on the acidulation process. A central composite rotational experimental design of two levels was used. The responses of the trials were γ -oryzanol concentration in the acid oil and process…

Polymer Science and PVC

Rubidium metaborate, Rb3B3O6

Sabine Schmid、Wolfgang Schnick2004-06-30Acta Crystallographica Section C Crystal Structure Communications

Rubidium metaborate, Rb3B3O6, was obtained by the reaction of Rb2CO3 and BN using a radiofrequency furnace at a maximum reaction temperature of 1173 K. The crystal structure has been determined by single-crystal X-ray diffraction. The space group is R3c, with all atoms positioned on a twofold axis (Wyckoff site 18e).…

X-ray Diffraction in CrystallographyCrystal Structures and PropertiesAdvanced Condensed Matter Physics

Application of ductile iron in the manufacture of ploughshares

Roman Březina、Josef Filípek、Jaroslav Šenberger2004-06-30Research in Agricultural Engineering

The service life and reliability of machines for basic soil cultivation is mainly affected by abrasive wear. The working tools of these machines are mostly made of steel. The paper deals with the possibility of manufacturing ploughshares and reversible points of austempered ductile iron (ADI). The authors examine the…

Surface Treatment and CoatingsMetal Alloys Wear and PropertiesMechanical and Thermal Properties Analysis

Determination of Ag domain populations onCu(111)using directional Auger and directional elastic peak electron spectroscopies

M. Nowicki2004-06-30Physical Review B

The Auger signal and the intensity of elastically backscattered electrons were measured as a function of the incidence angle of the primary electron beam to find the crystalline structure of ultrathin Ag layers on the $\mathrm{Cu}(111)$ surface. Experimental profiles were compared with theoretical data obtained with t…

Electron and X-Ray Spectroscopy TechniquesSemiconductor materials and devicesSurface and Thin Film Phenomena

Improved Insert Geometry for Reducing Tank-Wall Losses in Pad-Mounted Transformers

J.C. Olivares、R. Escarela-Pérez、S.V. Kulkarni 等 6 位作者2004-06-30IEEE Transactions on Power Delivery

This paper presents a numerical analysis of losses generated in the tank-wall surrounding the high-current bushings of pad-mounted transformers using a three-dimensional (3-D) finite-element approach. Two cases are analyzed to study the impact of inserting small plates of different geometry (located near the high-curr…

Thermal Analysis in Power TransmissionMagnetic Properties and ApplicationsSilicon Carbide Semiconductor Technologies

Theoretical Contact Angles on a Nano-Heterogeneous Surface Composed of Parallel Apolar and Polar Strips

Changpeng Fang、Jarosław Drelich2004-06-30Langmuir

Neumann-Good's parallel strip model (J. Colloid Interface Sci. 1972, 38, 341) was used to analyze the contact angle hysteresis for a liquid on a heterogeneous surface composed of alternatively aligned horizontal apolar (theta = 70 degrees ) and polar (theta = 0 degree ) strips. The critical size of the strip width, be…

Surface Modification and Superhydrophobicitynanoparticles nucleation surface interactionsForce Microscopy Techniques and Applications

Self-Aggregation of Lipophilic Porphyrins in Reverse Micelles of Aerosol OT

Denísio M. Togashi、Sı́lvia M. B. Costa、A.J.F.N. Sobral 等 4 位作者2004-06-30The Journal of Physical Chemistry B

The aggregation process of meso -tetra(4-aminosulfonylphenyl)porphyrin (PC 0 ), of butyl and dodecyl derivatives (PC 4 and PC 12, respectively) in the presence of aerosol-OT (AOT) reversed micelles with different values of ω 0 = [water]/[AOT] was investigated using steady-state extinction, fluorescence, and resonance…

Photochemistry and Electron Transfer StudiesPhotodynamic Therapy Research StudiesPorphyrin and Phthalocyanine Chemistry

Negative refractive index for a surface magnetostatic wave propagating through the boundary between a ferrite and ferrite-insulator-metal media

A. V. Vashkovskiǐ、Edwin H. Lokk2004-06-30Physics-Uspekhi

Refraction of a slow surface electromagnetic wave (magnetostatic wave) at the boundary between ferrite and ferrite-insulator-metal media is investigated experimentally and theoretically. The boundary is created in an yttrium iron garnet film by placing a metal plate at a certain distance from its surface. The refracti…

Metamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsMagneto-Optical Properties and Applications

Nonlinear transmission of single-wall carbon nanotubes in heavy water at a wavelength of 1.54 μm and self-mode locking in a Er3+: glass laser obtained using a passive nanotube switch

Nikolai N Il'ichev、Е. Д. Образцова、S. V. Garnov 等 4 位作者2004-06-30Quantum Electronics

Nonlinear transmission of single-wall carbon nanotubes in heavy water at a wavelength of 1.54 μm and self-mode locking in a Er3+ : glass laser obtained using a passive nanotube switch, Nikolai N Il'ichev, Elena D Obraztsova, Sergei V Garnov, Svetlana E Mosaleva

Mechanical and Optical ResonatorsDiamond and Carbon-based Materials ResearchCarbon Nanotubes in Composites

Tuning Octopolar NLO Chromophores: Synthesis and Spectroscopic Characterization of Persubstituted 1,3,5-Tris(ethynylphenyl)benzenes

Gunther Hennrich、Inge Asselberghs、Koen Clays 等 4 位作者2004-06-30The Journal of Organic Chemistry

The synthesis of a series of octopolar 1,3,5-tris(ethynylphenyl)benzenes via Sonogashira coupling is described, varying the substituents on both the central benzene core as well as the acetylenic periphery. In particular, systems bearing an electron-rich core and an electron-poor periphery are obtained that display ad…

Photochromic and Fluorescence ChemistryLuminescence and Fluorescent MaterialsNonlinear Optical Materials Research

Ecological Studies on Togyo Reservoir in Chulwon, Korea. 7. The Colonization of Epilithic Algae on Artificial Substrata (Tiles) at Mesocosm

Kyung Jin Lee、Sook-Kyung Yoon、Jang‐Seu Ki 等 4 位作者2004-06-30ALGAE

Patterns of epilithic algal colonization on artificial substrata (unglazed ceramic tiles) were investigated from 23rd April to 3rd July 1999 at weekly intervals over a 10 weeks period outside and inside the mesocosm in Togyo reservoir within the Civilian Passage Restriction Line near Demilitarized Zone (DMZ) in Korea.…

Diatoms and Algae ResearchAquatic Ecosystems and Phytoplankton DynamicsMarine and coastal ecosystems

Modern method of lactic acid recovery from fermentation broth

Věra Hábová、Karel Melzoch、Mojmı́r Rychtera2004-06-30Czech Journal of Food Sciences

Electrodialysis was used for lactic acid recovery from fermentation broth. In the first step, lactate was recovered and concentrated by desalting electrodialysis, and the second step was electroconversion of lactate to lactic acid by water-splitting electrodialysis. The final lactic acid concentration of 151 g/l was o…

Protein Hydrolysis and Bioactive PeptidesEnzyme Catalysis and Immobilizationbiodegradable polymer synthesis and properties

The Influence of Cocations H, Na, and Ba on the Properties of Cu−Faujasite for the Selective Catalytic Reduction of NO by NH3: An Operando DRIFT Study

Bernard Coq、Gérard Delahay、Robert Durand 等 5 位作者2004-06-30The Journal of Physical Chemistry B

The selective catalytic reduction (SCR) of NO by NH 3 in the presence of O 2 has been studied by operando DRIFT spectroscopy on four Cu-faujasite catalysts, Cu(0.12)Na−FAU, Cu(0.14)H−FAU, Cu(0.16)Ba−FAU, and Cu(0.38)Na−FAU. From steady-state SCR activity at 523, 623, and 723 K with NO/NH 3 /O 2 /He (0.2/0.2/3.0/96.6,…

Ammonia Synthesis and Nitrogen ReductionAdvanced Photocatalysis TechniquesCatalytic Processes in Materials Science

Analysis of directional grating-coupled radiation in waveguide structures

Curt A. Flory2004-06-30IEEE Journal of Quantum Electronics

Radiation scattered from diffraction gratings on the surface of waveguides is analyzed using the volume current method. This technique allows the interpretation of the grating elements as scattering centers of the underlying waveguide mode, and radiating sources for the diffracted fields. The framework allows separati…

Photonic and Optical DevicesMicrowave Engineering and WaveguidesOptical Coatings and Gratings