نتایج جستجو برای: multipurpose catalyst
تعداد نتایج: 47040 فیلتر نتایج به سال:
Computers can be very helpful to us by performing tasks on our behalf. For example, they are very good at performing calculations, storing information and producing visualisations of objects that do not yet exist as a made artifact. Increasingly, however, a different role is being found for the computer. It is the role of a catalyst, or a stimulant, to our own creative thinking. In such cases t...
This paper explores the impact of various group decision-making approaches on the performance of a multipurpose reservoir. The reservoir operation problem is solved by a continuous flexible stochastic dynamic program (FSDP) in which the variability and temporal persistence of the inflows are apprehended by a Markov model. Operating objectives are encoded as fuzzy sets whose membership functions...
PURPOSE Lens case hygiene is important for safe contact lens wear. However, there are no evidence-based data to suggest optimum hygiene regimens. This in vitro study aimed to evaluate and compare the effectiveness of manufacturers' guidelines and several other regimens in removing biofilm using various types of contact lens cases and disinfecting agents. METHODS Biofilms of Staphylococcus aur...
Background A multipurpose health worker (MPHW) is the key functionary and the first contact person in a subcenter. This study explores the workload of MPHWs in the multifarious domains of their activities and also assesses their time utilization pattern. Methods A time and motion study was conducted among 19 auxiliary nurse midwives (ANMs) and 10 HWs male (M) from six selected primary health ...
A simple and efficient synthesis of aryl and heteroaryl substituted pyrimidines has been developed via initial Knoevenagal, subsequent addition and final cyclization of aldehyde, ethylcyanoacetate and guanidine nitrate. Piperidine has been used as a catalyst. Short reaction time, environment friendly procedure and excellent yields are the advantages of this procedure. All synthesized compounds ...
Catalyst selectivity is associated with well-defined homogeneous active sites. Transition metal complexes and organocatalysts are highly active and selective in the homogeneous phase, and their heterogenization by incorporating them into inorganic solid materials allows combining their excellent catalytic activity with improved separation, recovering and recycling properties. In this article, w...
The aim of this paper is to analyze how different catalyst activity profiles influence the operating strategies of industrial reactors. Based on this analysis a method that can be used to transform information given by laboratory reactor experiments into a form which can be used to estimate the productivity of the catalyst and the quality properties of polymers under industrial conditions is pr...
Multipurpose hydropower reservoirs are regularly framed as water security and climate change solutions. Although multipurpose projects can do deliver a range of services, ‘win-win’ outcomes not guaranteed. Emerging energy risks altering the net benefits from operating to generation, supply, flood control, or other purposes. This paper shows that new governance approaches needed efficiently fair...
Webjspell is an Internet multipurpose tool for Portuguese morphological analysis and spell checking. It provides examples of phrases, frequencies, verbal conjugation tables, word suggestions, and Internet pages spell checking. This article describes Webjspell features, and results.
Spatial and mobile computing evolves. This paper describes a smart modeling platform called “GeoSEMA”. This approach tends to model multidimensional GeoSpatial Evolutionary and Mobile Agents. Instead of 3D and location-based issues, there are some other dimensions that may characterize spatial agents, e.g. discrete-continuous time, agent behaviors. GeoSEMA is seen as a devoted design pattern mo...
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