Study on Molecule Dimension of Different Granularity Konjac Glucomannan

2011 ◽  
Vol 52-54 ◽  
pp. 1344-1347
Author(s):  
Chao Wang ◽  
Yu Peng Zhu ◽  
Mei Xu ◽  
Dong Sheng Li ◽  
Hong Xia Huang
Keyword(s):  
Molecular Conformation ◽  
Laser Light ◽  
Linear Structure ◽  
Konjac Glucomannan ◽  
Theoretical Research ◽  
Molecular Characteristics ◽  
Practical Application ◽  
Molecular Dimension ◽  
Particle Size Analyzer ◽  
Granularity Distribution

In this paper, the relativity on the granularity with different mesh of konjac glucomannan (KGM) and molecular dimension was discussed. Laser particle size analyzer, laser light scattering and digital polarimeter were used to analyze the granularity distribution, molecular characteristics and polarity of KGM. The results showed that the granularity of KGM after gradient refining was gradually decreased and KGM was well dispersed in ethanol(D50=13.11μm).The Mw of KGM was gradually decreased with its granularity decrease and its molecular conformation was from globular to linear structure. The space asymmetry of KGM at 80-100 meshes was minimum and its polarity was maximum. The primary establishment on the relativity offered the references to KGM theoretical research and practical application.

Effect of the Environment Factors on KGM Molecular Dimension

2011 ◽  
Vol 52-54 ◽  
pp. 1336-1339
Author(s):  
Chao Wang ◽  
Mei Xu ◽  
Yu Peng Zhu ◽  
Yu Qiao ◽  
Lin Lin Cai
Keyword(s):  
Molecular Weight ◽  
Linear Function ◽  
Industrial Application ◽  
Molecular Conformation ◽  
Enzyme Concentration ◽  
Environment Factors ◽  
Regular Change ◽  
Molecular Dimension ◽  
Ultrasonic Time ◽  
Polarity Change

In this paper, the effect of environment factors on KGM molecular dimension was discussed, such as ultrasonic, enzyme, concentration and temperature. The KGM polarity, molecular weight (Mw) and conformation were analyzed by digital polarimeter and LLS. The result indicated that the polarity change influenced by temperature and ultrasonic accorded with linear function equation. Mw of KGM gradually decreased with ultrasonic time and concentration of enzyme increase. The concentration of KGM was lower, the effect was more obviously. The changes of KGM Mw also brought regular change of molecular conformation. All offers the reference to reliabletheoretical foundations on controlling KGM molecular dimension and industrial application in exploiting KGM potential function and activity.

Effect of Environmental Factors of Mannanase on Konjac Glucomannan Molecular Dimension

2011 ◽  
Vol 689 ◽  
pp. 308-314
Author(s):  
Xiao Yan Long ◽  
Xue Gang Luo ◽  
Ju Bai ◽  
Jia Feng Zhu
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
Reaction Time ◽  
Environmental Factors ◽  
Weight Distribution ◽  
Degradation Process ◽  
Konjac Glucomannan ◽  
Molecular Dimension ◽  
Degradation Reaction ◽  
Theoretical Foundations

The environmental factors of mannanase konjac glucomannan (KGM) have been investigated in aqueous solution. Molecular weight (Mw) and molecular weight distribution (WMD) of the degraded KGM were measured by GPC. During the degradation process, the molecular weight of the enzymatic products decreases with reaction time, degradation reaction combining two reactions processed with different orders, while WMD broadens at first and then becomes narrow. The reduction of molecular dimension of KGM was lowered with temperature increase, but WMD increases. WMD was reduced with concentration of enzyme increase, but the reduction of molecular dimension of KGM was insignificant in the range of 2.0~6.5 u.mL-1of mannanase concentration. The results show that molecular dimension of KGM could be controlled by soft changes of reaction environment, dimension of KGM molecule could be decreased more than 100 times so as to obtain oligosaccharides, which offers the reference to reliable theoretical foundations and practical ground in exploiting KGM potential function and activity.

scholarly journals The Shift in the Direction of Applied an Introduction to Design Course Reform Research Colleges and Universities

2017 ◽  
Vol 1 (1) ◽  
pp. 137
Author(s):  
Ye Zhenyan
Keyword(s):  
Curriculum Reform ◽  
Teaching Methods ◽  
Teaching Experience ◽  
Present Situation ◽  
Colleges And Universities ◽  
Theory And Practice ◽  
Theoretical Research ◽  
Practical Application ◽  
Starting Point ◽  
New Situation

Under the background of advocating the college students' innovative undertaking, art design class colleges and universities in China and from theoretical research to practical application, as a starting point, combined with an introduction to design course teaching, the writer summarizes the teaching experience accumulation, recommending a series of curriculum reform, the main theory of curriculum reform to teachers theory teaching present situation, in a variety of teaching methods, guide students to pay attention to the combination of theory and practice, enhance students' interest in introduction to design courses, thinking on the reform of the course in the new situation.

scholarly journals Innovation and Research on Practical Activities of Extensive Courses——Taking xx Primary School as an Example

2020 ◽  
Vol 4 (11) ◽  
Author(s):  
Chenxi Xu
Keyword(s):  
Elementary School ◽  
Primary School ◽  
School Level ◽  
Theoretical Research ◽  
Practical Application ◽  
Current Application ◽  
Theoretical Concepts

With the introduction and wide application of extensive courses in recent years, their theoretical research and practical application have received more and more attention. In this paper, the current application and practice of the extensive courses at the elementary school level is studied through the integration of the theoretical concepts of extensive course and taking the practicals in the extensive courses of xx primary school as an example.

scholarly journals Theoretical Research and Technical and Tactical Practice of Basketball Teaching in Colleges

2020 ◽  
Vol 4 (9) ◽  
Author(s):  
Weifeng Huang
Keyword(s):  
Physical Education ◽  
Colleges And Universities ◽  
Theoretical Research ◽  
College Sports ◽  
Practical Application ◽  
College Basketball ◽  
Teaching Reform ◽  
Research And Teaching ◽  
Theory Research

Nowadays, colleges and universities in our country pay more and more attention to physical education. Basketball is one of the most popular sports in colleges and universities, and its teaching theory research and teaching reform have gradually become the key content of college physical education. This article first explains the current problems in college basketball teaching, and then puts forward some suggestions on how to improve the basic theoretical teaching level of college basketball, and analyzes the practical application of basketball techniques and tactics in colleges and universities in order to provide a broad range of college sports Teachers provide some useful suggestions in basketball teaching.

Structure and properties of organic liquid crystals

1993 ◽  
Vol 51 ◽  
pp. 656-657
Author(s):  
I.G. Voigt-Martin
Keyword(s):  
Liquid Crystals ◽  
Physical Properties ◽  
Molecular Conformation ◽  
Phase Transfer ◽  
Second Harmonic ◽  
Organic Liquid ◽  
Molecular Characteristics ◽  
Electronic Charge ◽  
Imaging Method ◽  
Contrast Imaging

Organic liquid crystals (LCs), both in the monomeric and polymeric state, are capable of self organisation because of the anisotropic shape of their molecules. By suitable molecular engineering it is thus possible to induce interesting physical properties like ferroelectricity, second harmonic generation (SHG) and photoconductivity. For a deeper understanding it is necessary to gain insight into the relationship between molecular characteristics (electronic charge distribution, dipole moments, hyperpolarisabilities, molecular conformation), structural relations (symmetry relations, space groups, defects) and the above physical propertiesFor structure analysis electron diffraction patterns from different crystallographic zones with many higher orders of diffraction are required. Unfortunately a characteristic feature of LCs is their loss of all higher order reflections and a change in symmetry. Furthermore, LCs give rise to specific defects, which give important information about the elastic energy density of the system. These can only be characterised by a phase contrast imaging method in which the small angle spatial frequencies are transferred by the electron microscope phase transfer function.

On Some Experiments in the Graduation of Mortality Statistics

1932 ◽  
Vol 63 (1) ◽  
pp. 12-57 ◽  
Author(s):  
Wilfred Perks
Keyword(s):  
Theoretical Research ◽  
Law And Order ◽  
Continuous Change ◽  
Practical Application ◽  
Changing Environment ◽  
Mortality Statistics ◽  
Mathematical System ◽  
Practical Instrument ◽  
Insight Into ◽  
Made In

In these days of continuous change in mortality, with the necessity of forecasting in many of our operations, a paper concerned with the graduation of mortality statistics may appear to be academic, the more so if attention is restricted to the fitting of mathematical curves, with or without any attempt to advance that elusive and, as some think, delusive conception, the law of mortality. Nevertheless, it is felt that if progress is to be made in any branch of science, theoretical research and experiment are essential, as also is the publication of the results, unless the work is completely abortive. It has become the fashion to speak of graduation as though its function were restricted to the provision of a practical instrument for monetary calculations; as Todhunter is reputed to have said, the tabulated values of lx are merely successive terms in a commutation column. Notwithstanding this, most of us retain, consciously or unconsciously, a feeling that, underlying all the roughnesses in our data referable to errors of observation and an ever-changing environment, there may be an inherent mathematical system of law and order, which if it could but be discovered would give such insight into the meaning of the unadjusted figures that a considerable advance would be made in the practical application of our science.

Next Generation of Human-Computer Interaction Technology Based on Kinect

2013 ◽  
Vol 329 ◽  
pp. 478-482
Author(s):  
Zhen Fang Teng
Keyword(s):  
User Interface ◽  
Human Computer Interaction ◽  
Theoretical Research ◽  
Next Generation ◽  
Practical Application ◽  
Development Mode ◽  
Natural User Interface ◽  
Computer Interaction

Kinect marks the arrival of the era of body feeling interaction, which strides over a big step to the ultimate goal of the human-computer interaction (natural user interface). The Kinect is introduced in the aspects of composition, operation principle, function, development mode. In addition, the latest application examples in the fields except for games are also told. So, it has certain theoretical research and practical application value for the researchers and engineers that are eager for studying Kinect technology.

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