نتایج جستجو برای: multi purpose catalysts
تعداد نتایج: 972653 فیلتر نتایج به سال:
In this paper, we combine two theories of the dynamics of a large socio-technical system — technology drift and actor-network theory — to address how and why information technologies often need to change, relative to their initial conceptions, during implementation. We analyze the failure of the first introduction of electronic cash in Umeå, Sweden as an example of what happens when drift does ...
The theory of Quantum Chromo Dynamics (QCD) reproduces the strong interaction at distances much shorter than the size of the nucleon. At larger distance scales, the generation of hadron masses and confinement cannot yet be derived from first principles on basis of QCD. The P̄ANDA experiment at FAIR will address the origin of these phenomena in controlled environments. Beams of antiprotons togeth...
In this paper we present AnswerTree, a collaborative mobile location-based educational game designed to teach 8-12 year olds about trees and wildlife within the University of Nottingham campus. The activity is designed around collecting virtual cards (similar in nature to the popular Top Trumps games) containing graphics and information about notable trees. Each player begins by collecting one...
Pt-free cathode catalysts for polymer electrolyte membrane fuel cells have been prepared by multi-step pyrolysis of FePc and PhRs, in the best of which show extensively high initial cell performance and good durability compared to other present precious-metal-free cathode catalysts to date.
The cyber attack surface in a maritime environment is constantly growing. More current information and computer technologies are being used on cargo passenger ships to save operational costs increase navigational safety. Along with the growing reliance automation, risk of disruption vessel's critical systems by drawing wrong inputs from sensors change behaviour actuators has significantly incre...
The aim of this study was to evaluate the current and potential values and identify main threatening factors of Balanites aegyptiaca in Sudan. Three areas were selected for data collection (Umm Abdalla, Boat and Id Elfrissan). Group discussion was carried out to tap local community knowledge about the species uses, potentials and threatening factors. Then structured interview was used to verify...
MOTIVATION Imaging mass spectrometry has emerged in the past decade as a label-free, spatially resolved and multi-purpose bioanalytical technique for direct analysis of biological samples. However, solving two everyday data analysis problems still requires expert judgment: (i) the detection of unknown molecules and (ii) the testing for presence of known molecules. RESULTS We developed a measu...
The essential difference between small businesses and large corporations is found in their corporate structure. Similarly, the inter-organizational systems (IOSs) formed between small businesses to support strategic alliances and community-like networks have different requirements and functions Ffrom those formed between large corporations. This paper discusses the differences between the IOSs ...
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