The Grey Relation Analysis of Hemp Fiber Fineness and Chemical Composition after Plasma Assisted Degumming

2014 ◽  
Vol 887-888 ◽  
pp. 1341-1344
Author(s):  
Di Yin ◽  
Ying Chao Ji ◽  
Ying Wang ◽  
Hong Li
Keyword(s):  
Chemical Composition ◽  
Lignin Content ◽  
Cellulose Content ◽  
Grey Relation Analysis ◽  
Hemp Fiber ◽  
Fiber Fineness ◽  
Relation Analysis ◽  
Relationship Of ◽  
The Relationship ◽  
Grey Relation

The plasma was used to assist hemp fiber degumming. After degumming, the relationship of the hemp fiber fineness and chemical composition was analyzed through the Grey Relation Analysis. The results indicates that pectin content is bigger than hemicellulose and lignin content on the influence of hemp fiber fineness, and the influence of cellulose content is small. This conclusion is consistent with the actual production and the experience of technical personnel.The pectin, hemicellulose, and lignin are therefore the main content to be removed in the plasma assisted degumming.

Research of the Relationship between Hemp Fiber Density and its Chemical Composition

2011 ◽  
Vol 332-334 ◽  
pp. 152-155
Author(s):  
Ying Chao Ji ◽  
Jin Xing Ju ◽  
Yu Jia Liang
Keyword(s):  
Chemical Composition ◽  
Lignin Content ◽  
Chemical Compositions ◽  
Cellulose Content ◽  
Fiber Density ◽  
Hemp Fiber ◽  
Pectin Content ◽  
Density Values ◽  
The Relationship ◽  
Range Of Variation

Currently available data on density of hemp are all specific values, and their differences are obvious, which could bring trouble to the related products’ development and actual production. Therefore, provide accurate density values conducive to better achieve the development and use of hemp fiber related products. This paper mainly analysis the relevancy between hemp bast fibers’ chemical compositions and its density after degumming, and draw a conclusion that the density of hemp fiber is not a fixed value but a range of variation. The density will be changed when chemical composition contents in different hemp fiber are different. Which chemical composition that affected the density most is cellulose content, followed by pectin content, and than, the lignin content and hemi cellulose content.

Decision Making on Engineering Materials Based on Relative Grey Relation Analysis

2013 ◽  
Vol 753-755 ◽  
pp. 1620-1624
Author(s):  
Dong Jing Wang ◽  
An Hua Peng
Keyword(s):  
Decision Making ◽  
Grey Relational Analysis ◽  
Maximum Deviation ◽  
Grey Relation Analysis ◽  
Relational Analysis ◽  
Relation Analysis ◽  
Engineering Materials ◽  
Grey Relational ◽  
The Relationship ◽  
Grey Relation

The quality and cost of a product rely heavily on selecting suitable engineering materials, and therefore the ability to select the most appropriate material for a given application is the fundamental challenges faced by the design engineer. The general grey relational analysis (GRA) has three weaknesses: (1) weight determination depends only on expert judgments; (2) the qualitative indexes are only simply quantified with exact number; and (3) the general GRA only takes into account the relationship between the imaginarily best material and the candidate materials. The GRA is extended to RGRA, weights are determined by combining subjective and objective weights based on maximum deviation, and the qualitative indexes are fuzzily quantified through trapezoidal fuzzy number (TFN). The illustrative example shows that the presented method enables decision making results to be more reasonable and trustworthy.

Fuzzy grey relation analysis on torque influence factors of alternating current electrodyna-mometer

2013 ◽  
Vol 26 (8) ◽  
pp. 693-698 ◽  
Author(s):  
Zhigang Zhang ◽  
Guixiang Zhang ◽  
Teng Liu ◽  
Cheng Qian ◽  
Yuanwang Deng
Keyword(s):  
Influence Factors ◽  
Alternating Current ◽  
Grey Relation Analysis ◽  
Relation Analysis ◽  
Grey Relation

scholarly journals Microscopic Fungi in Big Cities: Biodiversity, Source, and Relation to Pollution by Potentially Toxic Metals

Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1471
Author(s):  
Maria V. Korneykova ◽  
Anastasia S. Soshina ◽  
Andrey I. Novikov ◽  
Kristina V. Ivashchenko ◽  
Olesya I. Sazonova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Toxic Metals ◽  
Road Dust ◽  
Airborne Fungi ◽  
Potentially Toxic Metals ◽  
Opportunistic Fungi ◽  
Air Quality Assessment ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

For the first time, a mycological analysis of outdoor urban environment (air, leaves, sealed surfaces) was carried in the cities of subarctic (Murmansk) and temperate (Moscow) climatic zones. The chemical composition of dust deposited on leaves of dominant tree species was taken as an indicator of the air quality. Assessment of the complex impact of factors (climate zone, type of substrate, anthropogenic load) on the quantitative and qualitative parameters of mycobiome was performed. Compared to Moscow, Murmansk was characterized by an increased number and concentrations of pollutants in the deposited dust. The number of culturable airborne fungi in Murmansk was substantially lower than in Moscow. Half of the species belonged to the opportunistic in both cities. Most dangerous opportunistic fungi were absent in the air of recreational zones but present on leaves surface and in road dust in all assessed zones of the cities. Dust chemical composition affected the diversity of fungi species. While the relationship of biological parameters with concentration of potentially toxic metals was generally negative, Cd increased the fraction of opportunistic fungi in road dust. The study revealed an importance of substrate in determining the sensitivity of outdoor mycobiome to pollution and highlighted its biological characteristics sensitive to climate.

scholarly journals Analisis Perbaikan Kualitas Jasa Layanan Parkir Sepeda Motor Kampus UAJ Semanggi

2017 ◽  
Vol 10 (2) ◽  
Author(s):  
Trifenaus Prabu Hidayat ◽  
Andre Sugioko ◽  
Jordan Adrian
Keyword(s):  
Value Stream Mapping ◽  
Grey Relation Analysis ◽  
Weighting Method ◽  
Value Stream ◽  
Catholic University ◽  
Parking Lot ◽  
Relation Analysis ◽  
Analysis System ◽  
Met Expectations ◽  
Grey Relation

<p>PT X Indonesia is Facility services company. The scope one of service from this company is managing parking area. Consumers of these companies come from various circles, such as Atma Jaya Catholic University of Indonesia. The management intended to give comfort to motorcycle users. But it is undeniable that the users often feel the deficiency in service provided by the company. Therefore, there needs to analyze important analyze the attributes that have not met expectations of the user. The results of the analysis will be used to provide a solution for PT X Indonesia. in this paper, will use the grey relation analysis method. Grey relation analysis is a weighting method to determine the performance attributes. This method uses a questionnaire to obtain answers from the user. Based on the method selected five attributes that represent the security in the parking area, comfort a canopy (roof guards), and the services at the counter. This paper uses three approach analysis, such as cause analysis, system simulation, and value stream mapping service. The results of this research is an increase in the number of officers watching, installation, CCTV images, the use of a new payment system that is tapping card, use canopy to pedestrian path on the area in the parking lot and an increase in the number of the counter.</p><p>Keywords: PT. X Indonesia, Parking Service, Grey Relation Analysis</p>

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