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Tremendous Interest (tremendous + interest)
Selected AbstractsInkjet-Printed Single-Droplet Organic Transistors Based on Semiconductor Nanowires Embedded in Insulating PolymersADVANCED FUNCTIONAL MATERIALS, Issue 19 2010Jung Ah Lim Fabrication of organic field-effect transistors (OFETs) using a high-throughput printing process has garnered tremendous interest for realizing low-cost and large-area flexible electronic devices. Printing of organic semiconductors for active layer of transistor is one of the most critical steps for achieving this goal. The charge carrier transport behavior in this layer, dictated by the crystalline microstructure and molecular orientations of the organic semiconductor, determines the transistor performance. Here, it is demonstrated that an inkjet-printed single-droplet of a semiconducting/insulating polymer blend holds substantial promise as a means for implementing direct-write fabrication of organic transistors. Control of the solubility of the semiconducting component in a blend solution can yield an inkjet-printed single-droplet blend film characterized by a semiconductor nanowire network embedded in an insulating polymer matrix. The inkjet-printed blend films having this unique structure provide effective pathways for charge carrier transport through semiconductor nanowires, as well as significantly improve the on-off current ratio and the environmental stability of the printed transistors. [source] Lithium-Catalyzed Dehydrogenation of Ammonia Borane within Mesoporous Carbon Framework for Chemical Hydrogen StorageADVANCED FUNCTIONAL MATERIALS, Issue 2 2009Li Li Abstract Ammonia borane (AB) has attracted tremendous interest for on-board hydrogen storage due to its low molecular weight and high gravimetric hydrogen capacity below a moderate temperature. However, the slow kinetics, irreversibility, and formation of volatile materials (trace borazine and ammonia) limit its practical application. In this paper, a new catalytic strategy involved lithium (Li) catalysis and nanostructure confinement in mesoporous carbon (CMK-3) for the thermal decomposition of AB is developed. AB loaded on the 5% Li/CMK-3 framework releases ,7,wt % of hydrogen at a very low temperature (around 60,°C) and entirely suppresses borazine and ammonia emissions that are harmful for proton exchange membrane fuel cells. The possible mechanism for enhanced hydrogen release via catalyzed thermal decomposition of AB is discussed. [source] Biomedical Applications of Layer-by-Layer Assembly: From Biomimetics to Tissue Engineering,ADVANCED MATERIALS, Issue 24 2006Z. Tang Abstract The design of advanced, nanostructured materials at the molecular level is of tremendous interest for the scientific and engineering communities because of the broad application of these materials in the biomedical field. Among the available techniques, the layer-by-layer assembly method introduced by Decher and co-workers in 1992 has attracted extensive attention because it possesses extraordinary advantages for biomedical applications: ease of preparation, versatility, capability of incorporating high loadings of different types of biomolecules in the films, fine control over the materials' structure, and robustness of the products under ambient and physiological conditions. In this context, a systematic review of current research on biomedical applications of layer-by-layer assembly is presented. The structure and bioactivity of biomolecules in thin films fabricated by layer-by-layer assembly are introduced. The applications of layer-by-layer assembly in biomimetics, biosensors, drug delivery, protein and cell adhesion, mediation of cellular functions, and implantable materials are addressed. Future developments in the field of biomedical applications of layer-by-layer assembly are also discussed. [source] Theatre in the Sky: a ubiquitous broadband multimedia-on-demand service over a novel constellation composed of quasi-geostationary satellitesINTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING, Issue 3 2006Tarik Taleb Abstract To meet an ever-growing demand for wideband multimedia services and electronic connectivity across the world, development of ubiquitous broadband multimedia systems is gaining a tremendous interest at both commercial and academic levels. Satellite networks will play an indispensable role in the deployment of such systems. A significant number of satellite communication constellations have been thus proposed using Geostationary (GEO), Medium Earth Orbit (MEO), or Low Earth Orbit (LEO) satellites. These constellations, however, either require a potential number of satellites or are unable to provide data transmission with high elevation angles. This paper proposes a new satellite constellation composed of Quasi-GeoStationary Orbit (Quasi-GSO) satellites. The main advantage of the constellation is in its ability to provide global coverage with a significantly small number of satellites while, at the same time, maintaining high elevation angles. Based on a combination of this Quasi-GSO satellites constellation and terrestrial networks, the paper proposes also an architecture for building a global, large-scale, and efficient Video-on-Demand (VoD) system. The entire architecture is referred to as a ,Theatre in the Sky'. Copyright © 2006 John Wiley & Sons, Ltd. [source] Product innovativeness from the firm's perspective: Its dimensions and their relation with project selection and performanceTHE JOURNAL OF PRODUCT INNOVATION MANAGEMENT, Issue 6 2001Erwin Danneels There has recently been tremendous interest in product innovativeness. However, it seems that we need a better understanding of exactly what product innovativeness means. This article presents a conceptual framework to clarify its meaning. The framework first distinguishes customer and firm perspectives on product innovativeness. From the customer's perspective, innovation attributes, adoption risks, and levels of change in established behavior patterns are regarded as forms of product newness. Within the firm's perspective, environmental familiarity and project-firm fit, and technological and marketing aspects are proposed as dimensions of product innovativeness. Next, the article offers a tentative empirical test of the proposed dimensions of product innovativeness from the firm's perspective. A well-known dataset of 262 industrial new product projects is used to: I) clarify the product innovativeness construct and examine its underlying dimensions, 2) examine the relation of product innovativeness with the decision to pursue or kill the project, and 3) examine the relationship between product innovativeness and product performance. Five dimensions of product innovativeness are found which have distinct relations with the Go/No Go decision and product performance: market familiarity, technological familiarity, marketing fit, technological fit, and new marketing activities. Most strikingly, measures of fit are related to product performance, whereas measures of familiarity are not. The article concludes that researchers need to be careful about which definitions and measures of product innovativeness they employ, because depending on their choice they may arrive at different findings. New product practitioners are encouraged to evaluate new product opportunities primarily in terms of their fit with their firm's resources and skills rather than the extent to which they are "close to home". [source] Basic Emergency Medicine Skills Workshop as the Introduction to the Medical School Clinical Skills CurriculumACADEMIC EMERGENCY MEDICINE, Issue 2009Wallace Carter Introduction:,Most medical school curricula lack training in basic skills needed in a medical emergency. After the September 11th, 2001 terrorist attacks, junior level medical students at our institution volunteered their time in the emergency department[ or at Ground Zero. They quickly realized they had little or no practical training for an emergency situation. Objectives:,To correct this curriculum deficit, a five hour basic emergency medicine skills / first responder course for students in their first few weeks of medical school was designed. Methods:,The course consists of lectures followed by related skills stations. Lectures include an introduction to the first responder concept, basic airway, breathing, and circulation management, and a rapid, systematic approach to common emergencies. Skills stations teach basic airway management, bag valve mask ventilation, splinting and immobilizing, and moving patients in the field, stressing improvisation. Multiple skills are practiced in a final simulation station using actors with wound moulage and scripted scenarios. Results:,This course, instituted at Weill Cornell Medical School in 2002, has become a mainstay of the first year curriculum. Student evaluations have been uniformly superlative. There is strong student sentiment that this is the most practical course of the first year. Conclusion:,After six years of experience, we have shown it is possible to present a truncated first responder course as part of the first year curriculum. The course generates tremendous interest and awareness regarding emergency medicine. Future research will examine whether skills taught in this course are retained and can be correctly applied later in medical school. [source] When to say when: can excessive drinking explain silicon uptake in diatoms?BIOESSAYS, Issue 3 2009Kimberlee Thamatrakoln Abstract Diatoms are the single most important drivers of the oceanic silicon biogeochemical cycle. Due to their considerable promise in nanotechnology, there is tremendous interest in understanding the mechanism by which they produce their intricately and ornately decorated silica-based cell wall. Although specific proteins have been implicated in some of the key steps of silicification, the exact mechanisms are poorly understood. Silicon transporters, identified in both diatoms and silicoflagellates, are hypothesized to mediate silicon uptake. Recently, macropinocytosis, the non-specific engulfment of extracellular fluid, was proposed as a more energetically favorable uptake mechanism, which can also explain the long-observed effect of salinity on frustule morphology. We explore the bioenergetic, membrane recycling, and vacuolar volume requirements that must be satisfied for pinocytosis-mediated silicon uptake. These calculated requirements contrast starkly with existing data on diatom physiology, uptake kinetics, growth, and ultrastructure, leading us to conclude that pinocytosis cannot be the primary mechanism of silicon uptake. [source] Perrhenate Esters in New Catalytic ReactionsCHEMCATCHEM, Issue 3 2009Stéphane Bellemin-Laponnaz Abstract There has been tremendous interest in the use of alkyltrioxorhenium complexes as catalysts for various organic transformations. Although such applications are now well known and, indeed, have been widely studied, other organorhenium oxide families, namely the perrhenate esters O3ReOR, have received much less attention. In this review, such ReVII species are shown to be very promising catalysts and several recent examples are presented, with the aim of shedding light on their synthetic potential as a new tool for organic chemists. [source] | ||||||||||