161   Blood metabolite data in response to maximal exercise in healthy subjects Blood metabolite data in response to maximal exercise in healthy subjects    2012 Maximal exercise test with gas exchange measurement evaluates exercise capacities with maximal oxygen uptake (VO2max) measurement. Measurements of lactate (L), lactate/pyruvate ratio (L/P) and ammonium (A) during rest, exercise and recovery enhance interpretative power of maximal exercise by incorporating muscular metabolism exploration. Maximal exercise test with gas exchange measurement is standardized in cardiopulmonary evaluations but, no reference data of blood muscular metabolites are avai... 查看全文

162   heikki.karjaluoto heikki.karjaluoto Heikki Karjaluoto, Timo Koivumäki, Jari Salo    0 The financial industry can nowadays be viewed as a battlefield where the players are keenly planning new ways to achieve competitive advantage. Besides increasing competition and change, the current trend in private banking has been the consumer movement from traditional branch banking to stand-alone, online banking. This paper examines the uptake of online banking by the use of a survey (1167 responses) conducted during the summer of 2000 in Finland. The main results of the study indicate that ... 查看全文

163   Das Seminar Schreiben(d) Lernen im Team: Entstehungsgeschichte und hochschulpolitischer Rahmen Das Seminar Schreiben(d) Lernen im Team: Entstehungsgeschichte und hochschulpolitischer Rahmen Katrin Girgensohn    0 Mehr als ein Jahrzehnt ist vergangen, seit der Bologna-Prozess initiiert wurde. 30 europ?ische L?nder hatten 1999 beschlossen, bis zum Jahr 2010 einen gemeinsamen europ?ischen Hochschulraum zu schaffen, der eine Vergleichbarkeit der Hochschulabschlüsse erm?glicht und damit auch die Mobilit?t von Studierenden, Lehrenden und Forschenden erleichtert (BMBF 1999). In der Folge der Bologna-Erkl?rung wurden neue Studienstrukturen eingeführt, die zu Bachelor- und Maste... 查看全文

164   National surveillance of occupational fatalities in agriculture National surveillance of occupational fatalities in agriculture Almaz Eshete    2007 Agriculture is one of the most hazardous industries in the United States. Although estimates vary, all reporting agencies show agriculture having an occupational fatality rate three to five times higher than that of the general private sector. The National Institute for Occupational Safety and Health (NIOSH). Division of Safety Research's National Traumatic Occupational Fatalities (NTOF) data base monitors occupational fatal injuries in all industries in the United States through death certifica... 查看全文

165   Controlled structural and optical properties of ZnO nano-particles Controlled structural and optical properties of ZnO nano-particles    2010 In this work, we have analyzed two synthesis procedures through experimental characterizations, where one provides a main temperature region for the control of the shape and size of ZnO nano-particles in comparison to the other. We have found that the complexing agent has a significant role in showing such a control region. This effect might also improve the fabrication and properties of other interesting and applicable nano-structures. © 2010 The Royal Swedish Academy of Sciences. 查看全文

166   Density Functional Study of Interaction of Atomic Pt with Pristine and Stone−Wales-Defective Single-Walled Boron Nitride Nanotubes Density Functional Study of Interaction of Atomic Pt with Pristine and Stone−Wales-Defective Single-Walled Boron Nitride Nanotubes Ya Kun Chen, Lei Vincent Liu and Yan Alexander Wang*    2010 Interactions between atomic Pt and pristine or Stone?Wales-defective (5,5) single-walled boron nitride nanotubes (BNNTs) were studied using density functional theory (DFT) with truncated nanotube models. The binding energy of Pt on a pristine BNNT is about 20 kcal/mol with little dependency on the binding site. On the other hand, when the Stone?Wales (SW) defect is presented, the atomic Pt is preferentially inserted between the B?B bond in the SW defect region with a large binding energy of 58 k... 查看全文

167   Multi-scale modeling of surface effect via the boundary Cauchy-Born method Multi-scale modeling of surface effect via the boundary Cauchy-Born method    2011 In this paper, a novel multi-scale approach is developed for modeling of the surface effect in crystalline nano-structures. The technique is based on the Cauchy-Born hypothesis in which the strain energy density of the equivalent continua is calculated by means of inter-atomic potentials. The notion of introducing the surface effect in the finite element method is based on the intrinsic function of quadratures, called as an indicator of material behavior. The information of quadratures is derive... 查看全文

168   Lessons for successful nonprofit governance Lessons for successful nonprofit governance Jaemyung Goo    2006 Boards of nonprofit organizations malfunction as often as they function effectively. As the best-managed nonprofit organizations demonstrate, both the board and the executive are essential to the proper functioning of a nonprofit organization. These administrative organs must work as equal members of a team rather than one subordinate to the other. Moreover, the work of the executive and the board does not divide neatly into policy-making versus execution of policy. Boards and executives must be... 查看全文

169   Development of a direct test of baculovirus resistance in wild codling moth populations Development of a direct test of baculovirus resistance in wild codling moth populations    2012 The occurrence of resistance of codling moth (CM, Cydia pomonella L.) to Cydia pomonella granulovirus (CpGV) used as biological control agent revealed the need for fast and reliable resistance monitoring methods. Here, we describe the development of a laboratory resistance test that is directly performed on larvae extracted from infested apples. This test is based on a 14-day bioassay at a discriminative CpGV concentration of 2 × 105 occlusion bodies/ml diet and can be applied to... 查看全文

170   Carbon based nanotubes and nanopowder as impregnated electrode structures for enhanced power generation: Evaluation with real field wastewater Carbon based nanotubes and nanopowder as impregnated electrode structures for enhanced power generation: Evaluation with real field wastewater    2012 Carbon based multiwalled nanotubes (MWCNT) and nanopowder (CNP) impregnated using conductive epoxy resin on anodic surface were evaluated for bioelectricity generation in single chambered microbial fuel cells in comparison with plain graphite anode (MFCP). The study demonstrated the positive function of carbon nano structures impregnated anode with respect to power generation. MFCMWCNT exhibited higher electrogenic activity (267.77mW/m2) followed by MFCCNP (168.45mW/m2) and MFCP (107.51mW/m2). M... 查看全文

171   Theoretische Grundlagen des Entscheidens Theoretische Grundlagen des Entscheidens Daniela Busse    0 Welche Relevanz hat die Entscheidungstheorie innerhalb der Immobilien?konomik – und wie kann Nachhaltigkeit mit ihrer Hilfe strategisch verortet werden? 查看全文

172   Die Erforschung sozialer Beziehungen und Netzwerke im Zusammenhang mit Migrationsbewegungen Die Erforschung sozialer Beziehungen und Netzwerke im Zusammenhang mit Migrationsbewegungen Sabina Stelzig-Willutzki    0 Der Ausgangspunkt der Besch?ftigung mit sozialen Beziehungen im Zusammenhang mit weiblicher Migration ist die Feststellung vieler Untersuchungen, dass sehr h?ufig unter dem Einfluss sozialer Strukturen migriert wird. Das hei?t, Migration wird als ein Verhalten gesehen, das durch die sozialen Beziehungen, in die das Individuum eingebunden ist, entscheidend beeinflusst wird. Seit den 1980er Jahren ist in der Migrationsforschung die verst?rkte Tendenz zu beobachten,... 查看全文

173   Band gap of nanometer thick Si/SiO2 quantum wells: Theory versus experiment Band gap of nanometer thick Si/SiO2 quantum wells: Theory versus experiment    2008 In opto-electronics and photonics, the severe disadvantage of an indirect band gap has limited the application of elemental silicon. Amongst a number of diverse approaches to engineering efficient light emission in silicon nanostructures, one system that has received considerable attention has been Si/SiO2 quantum wells. Engineering such structures has not been easy, because to observe the desired quantum confinement effects, the quantum well thickness has to be less than 5 nm. Nevertheless, suc... 查看全文

174   Optimizing organic optoelectronic materials in both space and energy/time domains Optimizing organic optoelectronic materials in both space and energy/time domains    2005 Optimizations of organic/polymeric optoelectronic materials and devices in both space and energy/time domains have been studied, both experimentally and theoretically, in order to achieve high efficiency photoelectric conversion. Specifically, at spatial domain, a 'tertiary' block copolymer supra-molecular nano structure has been designed, and a series of-DBAB- type of block copolymers, where D is a conjugated donor block, A is a conjugated acceptor block, and B is a non-conjugated and flexible ... 查看全文

175   Clinical evaluation of the preliminary safety and effectiveness of a minimally invasive interspinous process device APERIUS® in degenerative lumbar spinal stenosis with symptomatic neurogenic intermit Clinical evaluation of the preliminary safety and effectiveness of a minimally invasive interspinous process device APERIUS® in degenerative lumbar spinal stenosis with symptomatic neurogenic intermit Jan Van Meirhaeghe, Patrick Fransen, Daniele Morelli, Niall J. A. Craig, Gregor Godde, Attila Mihaly    0 Purpose  New interspinous process decompression devices (IPDs) provide an alternative to conservative treatment and decompressive surgery for patients with neurogenic intermittent claudication (NIC) due to degenerative lumbar spinal stenosis (DLSS). APERIUS? is a minimally invasive IPD that can be implanted percutaneously. This multicentre prospective study was designed to make a preliminary evaluation of safety and effectiveness of this IPD up to 12&n... 查看全文

176   Calculation of electronic spectra of semiconductor nanostructures using the "mirror" boundary conditions Calculation of electronic spectra of semiconductor nanostructures using the "mirror" boundary conditions    2008 The problem of an electron in a quantum well is treated using the new ("mirror") boundary conditions implying that the particle has a specular reflection from the well's boundaries. Solutions of the Schro¨dinger equation are obtained for some particular well's geometries when the variable separation method is applicable. The resemblance between the "mirror" and periodic boundary conditions is discussed. Comparison of the results with some experimental data shows that this approach can provid... 查看全文

177   Landau damping effects on SO limited mobility Landau damping effects on SO limited mobility    2007 Surface optical phonons scattering is essential in determning the channel mobility of high- κ gate dielectric MOSFETs. Metal gates are believed to modulate the effects of high- κ phonons to some extent in comparison to poly-Si gates. In this work nonideal metal gate model is used to study the impact of SO scattering on the nMOSFET channel mobility. Landau damping effects, which are found to be important in the coupled plasmon-phonon scattering, are studied from the perspective of dif... 查看全文

178   Influence of fiber-like nanofillers on the rheological, mechanical, thermal and fire properties of polypropylene: An application to multifilament yarn Influence of fiber-like nanofillers on the rheological, mechanical, thermal and fire properties of polypropylene: An application to multifilament yarn    2010 Polypropylene and polypropylene grafted maleic anhydride based composites with modified and non-modified carbon nanotubes and sepiolite were prepared by melt extrusion. Their thermal, rheological, and dynamic mechanical properties were evaluated. Multifilament yarns were obtained from the composites by spin-drawing process and their mechanical properties were measured. Knitted fabrics from the multifilament yarns were characterized by cone calorimetry. The best interaction was obtained for polyp... 查看全文

179   Realizing Semantic Web Portal Using Available Semantic Web Technologies and Tools Realizing Semantic Web Portal Using Available Semantic Web Technologies and Tools Lidia Rovan    0 Portals allow easy access to information by integrating heterogeneous applications or data sources in consistent way. It gives users a personalized and restricted view of domain information. Standard portal features could be improved employing semantic web technologies. Although portals are now experiencing serious growth just as number of available semantic web tools, number of semantic web portals is negligible. In accordance to observed acceptance problems guidelines for developing semantic w 查看全文

180   Determination of proton-transfer rates and energetics for the clathrate hydrate of oxirane by FT-IR spectroscopy Determination of proton-transfer rates and energetics for the clathrate hydrate of oxirane by FT-IR spectroscopy Hugh H. Richardson, Paul J. Wooldridge, J. Paul Devlin    1985 查看全文

181   Synthesis and characterization of coil-rod-coil triblock copolymers comprising fluorene-based mesogenic monodisperse conjugated rod and poly(ethylene oxide) coil Synthesis and characterization of coil-rod-coil triblock copolymers comprising fluorene-based mesogenic monodisperse conjugated rod and poly(ethylene oxide) coil    2009 A series of coil rod coil triblock copolymers (i.e., F3T8EO8, F3T8EO17, F3T8EO45, and F3T8EO125) with a mesogenic monodisperse conjugated oligomer comprising 3 fluorene, 8 thiophene, and 2 phenyl units as the rod and poly(ethylene oxide) (PEO) as the coil were synthesized. A reference compound, that is F3T8ME2, with the identical rod but without PEO was also prepared for comparison. The volume fraction of PEO (fPEO) was 0, 0.16, 0.28, 0.50, and 0.73 for F3T8ME2, F3T8EO8, F3T8EO17, F3T8EO45,and F... 查看全文

182   Doping effect of carboxylic acid group functionalized multi-walled carbon nanotube on polyaniline Doping effect of carboxylic acid group functionalized multi-walled carbon nanotube on polyaniline    2011 The polyaniline-carboxylic acid functionalized multi-walled carbon nanotube (PANI-fMWCNT) nanocomposites have been successfully synthesized by in situ chemical oxidative polymerization of aniline using ammonium persulfate in the absence of any added acids. The surface functionalization of multi-walled carbon nanotube (fMWCNT) was performed in concentrated sulfuric and nitric acid mixture at 90 °C for 24 h. FTIR spectra indicate that the carboxylic acid groups were generated on the surface of... 查看全文

183   A new experimental methodology to analyse the friction behaviour at the tool-chip interface in metal cutting A new experimental methodology to analyse the friction behaviour at the tool-chip interface in metal cutting Hendrik Puls, Fritz Klocke;Dieter Lung    0 This paper investigates a new test to analyse the friction behaviour of the tool-chip interface under conditions that usually appear in metal cutting. The developed test is basically an orthogonal cutting process, that was modified to a high speed forming and friction process by using an extreme negative rake angle and a very high feed. The negative rake angle suppresses chip formation and results in plastic metal flow on the tool rake face. Through the modified ... 查看全文

184   Molecular morphological effects to optoelectronics Molecular morphological effects to optoelectronics    2007 A comparison study between a block copolymer and blend samples (D/A; donor/acceptor) revealed that their optoelectronic properties change significantly in different morphologies due to different processing conditions. The study shows that the photovoltaic performance of a block copolymer is better than that of corresponding donor/acceptor simple blend devices due to smaller scale (5-10 nanometers) donor/acceptor phase separation in the block copolymer, and that thermal annealing generally improv... 查看全文

185   Raman probing of adhesion loss in carbon nanotube - Reinforced composite Raman probing of adhesion loss in carbon nanotube - Reinforced composite    2011 Raman spectroscopy of a carbon nanotube - reinforced phenolic resin is used to study the interaction of nanotubes with a host matrix. The observed sublinear dependence of the Raman G-band shift on the matrix strain, accompanied by inhomogeneous broadening of the spectral line, is interpreted as a gradual loss of adhesion between nanotubes and the polymer. An approach to simulate the ensemble-averaged Raman response of the nanotubes in composite is proposed, that takes into account nanotube orien... 查看全文

186   Properties of spin coated epoxy/silica thin film composites: Effect of nano- and micron-size fillers Properties of spin coated epoxy/silica thin film composites: Effect of nano- and micron-size fillers    2011 With the increasing interest in high density electronics packaging, dimensional scaling becomes the key to evolution. Low coefficient of thermal expansion (CTE) thin film composites with silica fillers were fabricated using spin coating. In comparison with the conventional thin film fabrication, spin coating has the ability to control film thickness and uniformity. In this paper, the mechanical and thermal properties of the thin film composites using micron-silica and nano-silica were compared. ... 查看全文

187   Iceis'2004 Iceis'2004 Dss For Assessing, Giovanni Camponovo, Samuel Bendahan, Yves Pigneur    0 Assessing the external environment is an important component of organizations' survival and success. Unfortunately, a huge amount of information must be collected and processed in order to obtain a thorough and comprehensive representation of the environment. A decision support system can be very useful in helping decision makers to organize and analyze this information efficiently and effectively. This paper outlines a conceptual proposition helping to design such a system by presenting an... 查看全文

188   Novel case of a tenebrionid beetle using discontinuous gas exchange cycle when dehydrated Novel case of a tenebrionid beetle using discontinuous gas exchange cycle when dehydrated    2002 Abstract In this study we show a link between the respiratory method and state of hydration in an arid dwelling tenebrionid beetle (Pimelia grandis). Dehydrated beetles use discontinuous gas exchange cycles with a flutter period consisting of several discrete bursts of CO2 release, whereas beetles given access to food and water showed a form. of continuous CO2 release. These data give support to the respiratory water conservation hypothesis for the discontinuous gas exchange cycle. 查看全文

189   Persistence and efficacy of two diatomaceous earth formulations and a mixture of diatomaceous earth with natural pyrethrum against Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) on wh Persistence and efficacy of two diatomaceous earth formulations and a mixture of diatomaceous earth with natural pyrethrum against Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) on wh Ian Newton    2006 Laboratory tests were conducted to assess the insecticidal and residual effects of three diatomaceous earth (DE) formulations, Insecto®, PyriSec® and SilicoSec®, against Tribolium confusum Jacquelin du Val on wheat and maize. Quantities of wheat and maize were treated with the above formulations at 500, 1000 and 1500 mg kg−1 and stored at 25 °C and 55% relative humidity (RH). Samples were taken on the day of storage and every 30 days until completion of a 360 day period of ... 查看全文

190   Electrical resistance change and crack behavior. in carbon nanotube/polymer composites under tensile loading Electrical resistance change and crack behavior. in carbon nanotube/polymer composites under tensile loading    2012 This paper studies the electrical and mechanical responses of cracked carbon nanotube (CNT)-based polymer composites. Tensile tests were performed on single-edge cracked plate specimens of the nanocomposites at room temperature and liquid nitrogen temperature (77 K), and the electrical resistance change of the specimens was monitored. An analytical model based on the electrical conduction mechanism of CNT-based composites was also developed to predict the resistance change resulted from crack pr... 查看全文

[1]  [2]  [3]  [4]  [5]  [6]  [7]  [8]  [9]  [10]  [11]  [12]  [13]  [14]  [15]  [16]  17  [18]  [19]  [20]  [21]  [22]  [23]  [24]  [25]  [26]  [27]  [28]  [29]  [30]  [31]  [32]  [33]  [34]  [35]  [36]  [37]  [38]  [39]  [40]  [41]  [42]  [43]  [44]  [45]  [46]  [47]  [48]  [49]  [50]  [51]  [52]  [53]  [54]  [55]  [56]  [57]  [58]  [59]  [60]  [61]  [62]  [63]  [64]  [65]  [66]  [67]  [68]  [69]  [70]  [71]  [72]  [73]  [74]  [75]  [76]  [77]  [78]  [79]  [80]  [81]  [82]  [83]  [84]  [85]  [86]  [87]  [88]  [89]  [90]  [91]  [92]  [93]  [94]  [95]  [96]  [97]  [98]  [99]  [100]  [101]  [102]  [103]  [104]  [105]  [106]  [107]  [108]  [109]  [110]  [111]  [112]  [113]  [114]  [115]  [116]  [117]  [118]  [119]  [120]  [121]  [122]  [123]  [124]  [125]  [126]  [127]  [128]  [129]  [130]  [131]  [132]  [133]  [134]  [135]  [136]  [137]  [138]  [139]  [140]  [141]  [142]  [143]  [144]  [145]  [146]  [147]  [148]  [149]  [150]  [151]  [152]  [153]  [154]  [155]  [156]  [157]  [158]  [159]  [160]  [161]  [162]  [163]  [164]  [165]  [166]  [167]  [168]  [169]  [170]  [171]  [172]  [173]  [174]  [175]  [176]  [177]  [178]  [179]  [180]  [181]  [182]  [183]  [184]  [185]  [186]  [187]  [188]  [189]  [190]  [191]  [192]  [193]  [194]  [195]  [196]  [197]  [198]  [199]  [200]  [201]  [202]  [203]  [204]  [205]  [206]  [207]  [208]  [209]  [210]  [211]  [212]  [213]  [214]  [215]  [216]  [217]  [218]  [219]  [220]  [221]  [222]  [223]  [224]  [225]  [226]  [227]  [228]  [229]  [230]  [231]  [232]  [233]  [234]  [235]  [236]  [237]  [238]  [239]  [240]  [241]  [242]  [243]  [244]  [245]  [246]  [247]  [248]  [249]  [250]  [251]  [252]  [253]  [254]  [255]  [256]  [257]  [258]  [259]  [260]  [261]  [262]  [263]  [264]  [265]  [266]  [267]  [268]  [269]  [270]  [271]  [272]  [273]  [274]  [275]  [276]  [277]  [278]  [279]  [280]  [281]  [282]  [283]  [284]  [285]  [286]  [287]  [288]  [289]  [290]  [291]  [292]  [293]  [294]  [295]  [296]  [297]  [298]  [299]  [300]  [301]  [302]  [303]  [304]  [305]  [306]  [307]  [308]  [309]  [310]  [311]  [312]  [313]  [314]  [315]  [316]  [317]  [318]  [319]  [320]  [321]  [322]  [323]  [324]  [325]  [326]  [327]  [328]  [329]  [330]  [331]  [332]  [333]  [334]  [335]  [336]  [337]  [338]  [339]  [340]  [341]  [342]  [343]  [344]  [345]  [346]  [347]  [348]  [349]  [350]  [351]  [352]  [353]  [354]  [355]  [356]  [357]  [358]  [359]  [360]  [361]  [362]  [363]  [364]  [365]  [366]  [367]  [368]  [369]  [370]  [371]  [372]  [373]  [374]  [375]  [376]  [377]  [378]  [379]  [380]  [381]  [382]  [383]  [384]  [385]  [386]  [387]  [388]  [389]  [390]  [391]  [392]  [393]  [394]  [395]  [396]  [397]  [398]  [399]  [400]  [401]  [402]  [403]  [404]  [405]  [406]  [407]  [408]  [409]  [410]  [411]  [412]  [413]  [414]  [415]  [416]  [417]  [418]  [419]  [420]  [421]  [422]  [423]  [424]  [425]  [426]  [427]  [428]  [429]  [430]  [431]  [432]  [433]  [434]  [435]  [436]  [437]  [438]  [439]  [440]  [441]  [442]  [443]  [444]  [445]  [446]  [447]  [448]  [449]  [450]  [451]  [452]  [453]  [454]  [455]  [456]  [457]  [458]  [459]  [460]  [461]  [462]  [463]  [464]  [465]  [466]  [467]  [468]  [469]  [470]  [471]  [472]  [473]  [474]  [475]  [476]  [477]  [478]  [479]  [480]  [481]  [482]  [483]  [484]  [485]  [486]  [487]  [488]  [489]  [490]  [491]  [492]  [493]  [494]  [495]  [496]  [497]  [498]  [499]  [500]   下一页