scholarly journals Determination of chitosan content with ratio coefficient method and HPLC

2020 ◽  
Vol 164 ◽  
pp. 384-388
Author(s):  
Qin Miao ◽  
Yulin Cui ◽  
Jingjing Zhang ◽  
Yingqi Mi ◽  
Wenqiang Tan ◽  
...  
Keyword(s):  
Chitosan Content ◽  
Coefficient Method

scholarly journals Study on Optimal Placement and Reasonable Number of Viscoelastic Dampers by Improved Weight Coefficient Method

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Ji-ting Qu ◽  
Hong-nan Li
Keyword(s):  
Mathematical Model ◽  
Weight Coefficient ◽  
Optimal Placement ◽  
Optimal Method ◽  
Analogy Method ◽  
Numerical Examples ◽  
Viscoelastic Dampers ◽  
Reasonable Number ◽  
Coefficient Method

A new optimal method is presented by combining the weight coefficient with the theory of force analogy method. Firstly, a new mathematical model of location index is proposed, which deals with the determination of a reasonable number of dampers according to values of the location index. Secondly, the optimal locations of dampers are given. It can be specific from stories to spans. Numerical examples are illustrated to verify the effectiveness and feasibility of the proposed mathematical model and optimal method. At last, several significant conclusions are given based on numerical results.

scholarly journals Determination of chitosan content with Schiff base method and HPLC

2021 ◽  
Author(s):  
Qin Miao ◽  
Yingqi Mi ◽  
Jingmin Cui ◽  
Jingjing Zhang ◽  
Wenqiang Tan ◽  
...  
Keyword(s):  
Schiff Base ◽  
Base Method ◽  
Chitosan Content

Indirect determination of the astrophysical S factor for the Li6 ( p,γ)Be7 reaction using the asymptotic normalization coefficient method

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
G. G. Kiss ◽  
M. La Cognata ◽  
R. Yarmukhamedov ◽  
K. I. Tursunmakhatov ◽  
I. Wiedenhöver ◽  
...  
Keyword(s):  
Asymptotic Normalization ◽  
Indirect Determination ◽  
Asymptotic Normalization Coefficient ◽  
S Factor ◽  
Coefficient Method

scholarly journals Determination Permeability Coefficient from Piezocone

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Qiang Wang ◽  
LiYuan Tong
Keyword(s):  
Permeability Coefficient ◽  
Pressure Ratio ◽  
Engineering Application ◽  
Pumping Test ◽  
Penetration Test ◽  
Cone Tip Resistance ◽  
Tip Resistance ◽  
The Relationship ◽  
Coefficient Method

The permeability coefficient of soil profile is one of the problems concerned by engineers, and the determination of permeability coefficient method mainly relies on the laboratory permeability test and field pumping test, but these tests are time-consuming and inefficient, and especially the permeability coefficient of soil under the condition of partial drainage was difficult to determine; in this paper, the modern digital CPTU technology was used. Dimensional permeabilityKTwas defined by using the dimensionless normalized cone tip resistanceQt, friction factorFr, and pore pressure ratioBq, these parameters enable plots ofBq-Qt,Fr-Qt,Bq-Frto be contouredKTand hence for permeability coefficient. The relationship has been applied to Nanjing 4th Yangtze river bridge, and compared with laboratory penetration test. The results indicate that the method can accurately determine the permeability coefficient of soil under partial drainage condition and provide the theoretical basis for engineering application.

The Determination of the Problem of the Cable-Stayed Bridge Reasonable Superpositioning Optimization under the Constant Load State, Basing on the Unknown Load Coefficient Method of Midas/Civil

2012 ◽  
Vol 178-181 ◽  
pp. 2081-2084
Author(s):  
Bao Chu Yu ◽  
Shao Xia Gao ◽  
Chao Gao ◽  
Jiang Yang ◽  
Bin Xie
Keyword(s):  
Optimization Problem ◽  
Structural Parameters ◽  
Constant Load ◽  
Analysis Software ◽  
Element Analysis ◽  
Cable Stayed Bridge ◽  
Cable Forces ◽  
Coefficient Method ◽  
Unknown Load

In the premise of structural parameters of not changing, cable-stayed bridge state by taking the reasonable force will become the optimization of cable-stayed bridge under constant load by taking the reasonable under the bridge state superpositioning optimization problem. Basing on the engineering background of Dachongyong bridge with finite element analysis software of Midas/Civil, taking the unknown load coefficient method of Midas/Civil as study platform, arounding the theme of the reasonable state of cable-stayed bridge, This paper make full use of the characteristic of cable forces can be adjust, introduced the method of superpositioning optimization algorithm in detail under the reasonable cable-stayed bridge state.

Galactic orbits of stars

1966 ◽  
Vol 25 ◽  
pp. 93-97
Author(s):  
Richard Woolley
Keyword(s):  
Globular Cluster ◽  
Potential Field ◽  
High Velocity ◽  
Velocity Vector ◽  
Variable Stars ◽  
The Sun ◽  
Proper Motions ◽  
Rr Lyrae ◽  
The Galaxy

It is now possible to determine proper motions of high-velocity objects in such a way as to obtain with some accuracy the velocity vector relevant to the Sun. If a potential field of the Galaxy is assumed, one can compute an actual orbit. A determination of the velocity of the globular clusterωCentauri has recently been completed at Greenwich, and it is found that the orbit is strongly retrograde in the Galaxy. Similar calculations may be made, though with less certainty, in the case of RR Lyrae variable stars.

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