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Bright Future (bright + future)
Selected AbstractsFor the Bright Future,Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4%ADVANCED MATERIALS, Issue 20 2010Yongye Liang The photovoltaic performance of polymer bulk heterojunction solar cells is studied systematically. Using a new benzodithiophene polymer (PTB7) and PC71BM (see figure) a power conversion efficiency of 7.4% has been achieved in PTB7/PC71BM-blend film, indicating a great potential and bright future for polymer solar cells (FF,=,fill factor, PCE,;=,power-conversion efficiency). [source] A Great Year behind Us, a Bright Future aheadCHEMISTRY & BIODIVERSITY, Issue 1 2005M. Volkan Kisakürek No abstract is available for this article. [source] New visions of dental tissue research: Tooth development, chemistry, and structureEVOLUTIONARY ANTHROPOLOGY, Issue 5 2008Tanya M. Smith Abstract Teeth are one of the best preserved and most commonly recovered elements in primate fossil assemblages. Taxonomic, functional, and phylogenetic hypotheses often rely on dental characters, despite considerable evidence of homoplasy in tooth form and large variation in tooth size within and among primates.1,2 Recent studies have led to new areas of research centered on incremental tooth development, chemical composition, and internal structure. Due to rapid technological developments in imaging and elemental sampling, these new approaches have the potential to increase our understanding of developmental biology, including not only changes in the pace of growth and reproduction, but also our assessments of diets, migration patterns, environments, and taxonomy. The integration of these temporal, chemical, and structural approaches heralds a bright future for the role of dental tissue research in evolutionary anthropology. © 2008 Wiley-Liss, Inc. [source] Systemic therapy for metastatic malignant melanoma , from deeply disappointing to bright future?EXPERIMENTAL DERMATOLOGY, Issue 5 2008Paul Lorigan Abstract:, The last decade has seen a considerable improvement in the understanding of the biology of melanoma. Advances have come in the understanding of the importance of critical oncogenes and tumour suppressor genes, epigenetic phenomena, signalling pathways, drug resistance mechanisms, the pivotal role of the local immune system, and the importance of cell,cell and cell,matrix interactions. Many of these pathways and interactions include potentially ,drugable' targets. These developments have allowed the identification and/or design of a range of new, targeted therapies. Evaluation of these new drugs has brought a whole new series of challenges. These include indentification of appropriate pre-clinical models, overcoming the redundancy inbuilt in complex biological systems, identification of appropriate molecular and clinical endpoints to show that the drug is hitting the target, how to combine treatments, and new toxicities. For the first time, there is the possibility of personalised treatment for melanoma patients, based on individual host and tumour characteristics. This paper discusses the range of new drugs and targets have been identified, the outcome of clinical trials, and the directions for future advances. [source] Battery Drivable Organic Single-Crystalline Transistors Based on Surface Grafting Ultrathin Polymer DielectricADVANCED FUNCTIONAL MATERIALS, Issue 18 2009Liqiang Li Abstract High-performance and battery drivable organic single-crystalline transistors with operational voltages,,,2.0,V are demonstrated using high-quality copper phthalocyanine (CuPc) single-crystalline nanoribbons and ultrathin polymer nanodielectrics. The ultrathin polymer nanodielectric is synthesized by grafting a ca. 10,nm poly(methyl methacrylate) (PMMA) brush on a silicon surface via surface-initiated atom-transfer radical polymerization (SI-ATRP). This surface-grafted nanodielectric exhibits a large capacitance, excellent insulating property, and good compatibility with organic semiconductors. The realization of a low operational voltage for battery driving at high performance, together with the merits of surface grafting of a nanodielectric, as well as the mechanical flexibility of the organic nanoribbon, suggests a bright future for use of these transistors in low-cost and flexible circuits. [source] For the Bright Future,Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4%ADVANCED MATERIALS, Issue 20 2010Yongye Liang The photovoltaic performance of polymer bulk heterojunction solar cells is studied systematically. Using a new benzodithiophene polymer (PTB7) and PC71BM (see figure) a power conversion efficiency of 7.4% has been achieved in PTB7/PC71BM-blend film, indicating a great potential and bright future for polymer solar cells (FF,=,fill factor, PCE,;=,power-conversion efficiency). [source] Observations on the Nature and Culture of Environmental HistoryHISTORY AND THEORY, Issue 4 2003J. R. McNeill This article aims to consider the robust field of environmental history as a whole, as it stands and as it has developed over the past twenty-five years around the world. It necessarily adopts a selective approach but still offers more breadth than depth. It treats the links between environmental history and other fields within history, and with other related disciplines such as geography. It considers the precursors of environmental history, its emergence since the 1970s, its condition in several settings and historiographies. Finally it touches on environmental history's relationship to social theory and to the natural sciences as they have evolved in recent decades. It concludes that while there remains plenty of interesting work yet to do, environmental history has successfully established itself as a legitimate field within the historical profession, and has a bright future, if perhaps for discouraging reasons. [source] Tourism and the state in Cuba: from the past to the futureINTERNATIONAL JOURNAL OF TOURISM RESEARCH, Issue 3 2009Richard Sharpley Abstract It has long been recognised that nature and extent of state intervention in tourism development closely reflects the prevailing political-economy and ideology within the destination state. This is certainly the case with Cuba which, since the 1959 revolution and despite the collapse of communism elsewhere, remains the world's only centrally-planned economy that boasts a significant international tourism sector. Tracing the development of tourism since 1959, this paper explores the relationship between the evolution of Cuba's political-economic structures and processes and their subsequent influence on the planning, control, development and ownership of tourism on the island. In particular, it considers the potential future of tourism in Cuba, challenging the widespread belief that, in a post-Castro era, the island's tourism sector faces a bright future. It concludes that, even with a potential move towards market reform, significant improvements will be required with respect to the quality, value and diversity of the island's tourism product. Copyright © 2008 John Wiley & Sons, Ltd. [source] Advanced Education in Prosthodontics: Residents' Perspectives on Their Current Training and Future GoalsJOURNAL OF PROSTHODONTICS, Issue 2 2010DMSc, Zeyad H. Al-Sowygh BDS Abstract Purpose: The purposes of this study were to identify current prosthodontic residents' demographics and to document prosthodontic residents' perspectives on their clinical training and future goals. Materials and Methods: A 52-item survey was created and distributed to prosthodontic residents in the United States on February 8, 2007. The data collected were analyzed; the means and standard deviations were calculated and ranked. Statistical analysis was conducted using Chi-square and Mann-Whitney analysis (p= 0.05). Results: A 43% response rate was achieved, representing approximately 48% of the total population of prosthodontic residents in the United States. The majority of residents ranked clinical education as the most important factor in selecting their programs, were satisfied with their training, and planned to pursue the certification of the American Board of Prosthodontics. When asked how often they planned to work, 4 days a week was the most common answer. Conclusion: This is the first report identifying current prosthodontic residents' demographics and their perspectives on their clinical training and future goals. Several trends were identified, indicating a bright future for the specialty. By knowing the students' perceptions regarding their training and future goals, the American College of Prosthodontists and/or program directors will be able to use this information to improve residency programs and the specialty. [source] Journal transition points to a bright future for its contribution to public healthAUSTRALIAN AND NEW ZEALAND JOURNAL OF PUBLIC HEALTH, Issue 6 2000Jeanne Daly No abstract is available for this article. [source] Biofuels in China: past, present and futureBIOFUELS, BIOPRODUCTS AND BIOREFINING, Issue 3 2010Cheng Zhong Abstract Energy security and environmental stress force China to seek and develop biofuels as a substitute of fossil energy. Meanwhile, China has great potential to provide a large quantity of feedstocks for biofuel production due to its vast amount of non-food crops, such as tuberous crops, sweet sorghum, cellulosic biomass, and algae. Recently, the study and the industrial-scale production of biofuels, particularly, fuel ethanol and biodiesel, have progressed remarkably in China as a result of government preferential policies and funding supports. We have briefly reviewed the historical development of biofuels in China with special emphasis on current feedstock utilization and process technology development. The bottlenecks of utilizing various feedstocks have also been analyzed and the prospects for future biofuel development in China have been explored. Biorefineries integrating reliable, low-cost and sufficient non-food feedstock supplies with highly efficient, environmentally friendly process technologies could sustain a bright future for biofuel development in China. Copyright © 2010 Society of Chemical Industry and John Wiley & Sons, Ltd [source] New Perspectives in Comparative Ecology of Neotropical Rain Forests: Reflections on the Past, Present, and FutureBIOTROPICA, Issue 1 2004Jennifer S. Powers ABSTRACT In an effort to understand variations in ecological patterns among lowland tropical rain forests, Alwyn Gentry and colleagues synthesized data sets from four of the premier Neotropical field stations,La Selva (Costa Rica), Barro Colorado Island (Panama), Cocha Cashu (Peru), and the Biological Dynamics of Forest Fragmentation Project (Brazil). To promote the kind of geographically comparative tropical ecology advocated in the 1990 Gentry book, the Organization for Tropical Studies and the Smithsonian Tropical Research Institute organized a course in 2001 that visited each of these field stations. Papers from some of the studies resulting from this course are highlighted in this special section. These studies are notable for the consistent methods applied across forests, and they underscore the acute need and bright future for comparative tropical ecology. Key site characteristics for each of the field stations are summarized here. RESUMEN En un esfuerzo de entender las variaciones en patrones ecológicos entre selvas tropicales de bajura, Alwyn Gentry y colegas sintetizaron bases de datos en las cuatro principales estaciones biológicos del Neotrópico: La Selva (Costa Rica), Barro Colorado Island (Panamá), Cocha Cashu (Perú), y el Proyecto de Dinámica Biológica de Fragmentación de Bosque (Brasil). Con el fin de promover el estudio ecologico tropical comparativa a nivel geográfico recomendada por Gentry en 1990 la Organización para Estudios Tropicales y el Smithsonian Tropical Research Institution organizaron un curso en el año 2001, el cual visitó cada una de éstas estaciones. Los artículos científicos de algunos de los estudios producto de este curso se presentan en esta sección especial. Estos estudios son notables debido a la consistencia en los metodología aplicada a través de los cuatro sitios. Asimismo, estos estudios denotan la necesidad y el potencial de Uevar a cabo mas investigación a nivel de ecología tropical comparativa. Caracteristicas importantes para cada una de las estaciones de campo son resumidos en esta sección. [source] | |||||||||||||||||||