نتایج جستجو برای: photocatalytic evaluation indexes

تعداد نتایج: 859581  

2005
Kyuman Song Surapong Lertsithichai Patrick Chiu

Indexes such as bookmarks and recommendations are helpful for accessing multimedia documents. This paper describes the 3D Syllabus system, which is designed to visualize indexes to multimedia training content along with the information structures. A double-sided landscape with balloons and cubes represents the personal and group indexes, respectively. The 2D ground plane organizes the indexes a...

2013
Qingsen Zhao Debing Deng Yong Liu Wei Chen Jiayong Wang Jun Xiang Song Hu

Condenser is one of the important auxiliary equipments in nuclear power plants. The thermal efficiency of the entire unit was depended on the condenser performance. Cleanliness factor and condenser corrected pressure are the two most important evaluation indexes. The definition and derivation of these two evaluation indexes were elaborated and clarified in this paper. And the condenser performa...

Journal: :E3S web of conferences 2021

This paper explores an evaluation method to evaluate the performance of participants in electric power emergency drill, expounds various important activities and summarizes general mode drill. introduces principle factor analysis principal component method, then uses this find common factors a series indexes, finally takes score as directly. comprehensive can reduce number indexes by looking fo...

Journal: :Molecules 2014
Malka Rochkind Sagi Pasternak Yaron Paz

This brief review aims at analyzing the use of dyestuffs for evaluating the photocatalytic properties of novel photocatalysts. It is shown that the use of dyes as predictors for photocatalytic activity has its roots in the pre visible-light activity era, when the aim was to treat effluents streams containing hazardous dyes. The main conclusion of this review is that, in general, dyes are inappr...

2006
Andras Csomai Rada Mihalcea

The automatic generation of back-of-the book indexes seems to be out of sight of the Information Retrieval and Natural Language Processing communities, although the increasingly large number of books available in electronic format, as well as recent advances in keyphrase extraction, should motivate an increased interest in this topic. In this paper, we describe the background relevant to the pr...

2017
Hossein Ali Rangkooy Fatemeh Tanha Neamat Jaafarzadeh Abolfazl Mohammadbeigi

The present study examined the gas-phase photocatalytic degradation of toluene using ZnO-SnO2 nanocomposite supported on activated carbon in a photocatalytic reactor. Toluene was selected as a model pollutant from volatile organic compounds to determine the pathway of photocatalytic degradation and the factors influencing this degradation. The ZnO-SnO2 nanocomposite was synthesized through co-p...

2016
Haijin Li Wenguang Tu Yong Zhou Zhigang Zou

Semiconductor photocatalysts have attracted increased attention due to their great potential for solving energy and environmental problems. The formation of Z-scheme photocatalytic systems that mimic natural photosynthesis is a promising strategy to improve photocatalytic activity that is superior to single component photocatalysts. The connection between photosystem I (PS I) and photosystem II...

2007
Kesheng Wu Kurt Stockinger Arie Shoshani

Bitmap indexes are known as the most effective indexing methods for range queries on append-only data, especially for low cardinality attributes. Recently, bitmap indexes were also shown to be just as effective for high cardinality attributes when certain compression methods are applied. There are many different bitmap indexes in the literature but no definite comparison among them has been mad...

2014
Lanping Li

The aim of this study is to propose a new target recognition method for the multi-sensor with multiple characteristics indexes. Coefficient of variation is used to determine the weights of characteristic indexes. The conceptions of ideal optimal and negative ideal vectors are given first and then normalized relative ratio is used to comprehensive evaluation value. Hence the rule of target recog...

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