The General Principles on Shaping of the Test Tasks of the Matrix Type of the More Low Order on Base of the Complex Test Compositions

2006 ◽  
Author(s):  
I.M. Tkachenko ◽  
A.A. Zaharov ◽  
A.M. Frolov
Keyword(s):  
Matrix Type ◽  
The Matrix ◽  
Complex Test ◽  
Low Order

Influence of the Matrix Type on the Mode I Fracture of Carbon-Epoxy Composites Under Dynamic Delamination

2010 ◽  
Vol 51 (3) ◽  
pp. 293-301 ◽  
Author(s):  
A. Argüelles ◽  
J. Viña ◽  
A. F. Canteli ◽  
A. Lopez
Keyword(s):  
Epoxy Composites ◽  
Mode I ◽  
Matrix Type ◽  
Mode I Fracture ◽  
The Matrix

Effervescent formulation based on variation of nanocapsules matrix type and roselle (Hibiscus sabdariffa) nanocapsules percentage

Food Research ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 53-59
Author(s):  
I.S.M. Purbowati ◽  
A. Maksum ◽  
R. Anggriawan
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Bioactive Compound ◽  
Total Phenol ◽  
Total Phenol Content ◽  
Arabic Gum ◽  
Matrix Type ◽  
Unique Effect ◽  
The Matrix ◽  
Physical And Chemical

Roselle flowers are usually consumed in the form of fresh steeping. To increase the flexibility of using roselle, effervescent roselle-based products are made which of course more practical, efficient and attractive. Unfortunately, the bioactive compound in roselle extracts is not stable to environmental influences so nanoencapsulation technology needs to be done. The encapsulation matrix type gives a unique effect on each core. The purposes of this study were to determine the effects of variation in the matrix types and percentage of roselle nanocapsules on the physical and chemical effervescent properties. The research design used in this study was a Complete Random Design with 2 factors and 3 replications. The first factor comprised matrix types (A): maltodextrin (A1) and Arabic gum (A2). The second factor was roselle nanocapsule percentages (B): 10% (B1), 15% (B2) and 20% (B3). Observed variables in this study were total phenol, anthocyanin, vitamin C, antioxidant activity and dissolving time. The Arabic gum nano encapsulated matrix type gave a better value of Vitamin C, antioxidant activity and dissolving time than maltodextrin, namely 0.149±0.049 µg/3 g, 34.02±4.52%, 2.93±0.80 mins. The percentage of roselle nanocapsules by 20% gave the highest vitamin C value, namely 0.188±0.032 µg /3 g. The best treatment combination was obtained from the treatment (A2B3) Arabic gum nanocapsules using the third percentage (20%) with the characteristics: total phenol content 4.17 µg /3 g, anthocyanin 0.070 µg /3 g, vitamin C 0.188 µg /3 g when it dissolves in 1.25 mins.

PROSPECTS OF APPLICATION OF FREQUENCY CONVERTERS MATRIX TYPE AT THE STAND FOR RUNNING AND TESTING AUTOMOTIVE ENGINES

2015 ◽  
Vol 2 (1) ◽  
pp. 76-78 ◽  
Author(s):  
Байков ◽  
A. Baykov ◽  
Иншаков ◽  
A. Inshakov
Keyword(s):  
Frequency Converter ◽  
Internal Combustion ◽  
Matrix Type ◽  
Frequency Converters ◽  
Automotive Engines ◽  
The Matrix ◽  
Prospects Of Application

The paper proposes a design stand for running and testing of automotive engines, internal combustion. Marked prospects of application as part of the stand of the matrix of the frequency converter.

The Effect of Matrix Type on Self-Assembly of Nanoparticles for Mechanical and Magnetic Applications

Materials ◽  
2005 ◽  
Author(s):  
Jeremiah T. Abiade ◽  
Sudhir Neralla ◽  
Jermaine Bradley ◽  
Sundara Viswanathan ◽  
Alok Gupta ◽  
...  
Keyword(s):  
Self Assembly ◽  
Magnetic Particles ◽  
Multilayered Structure ◽  
Controlled Synthesis ◽  
Stabilized Zirconia ◽  
Uniform Size ◽  
Matrix Type ◽  
Nanostructured Particles ◽  
Limited Success ◽  
The Matrix

The controlled synthesis of nanostructured particles with uniform size, shape, composition, and preferred orientation is a formidable task. Some conventional techniques have been demonstrated with limited success; however, reproducible processing schemes for heterogeneous multifunctional materials are still not satisfactory. To realize the advantageous technical applications of nanostructured materials, self-assembly or self-organizing methods are currently under investigation. Our results show that the matrix or template used for directed growth of nanoparticles (Fe, Ni) significantly affects the resultant mechanical properties of the multilayered structure. For example, a crystalline material like TiN, which grows epitaxially on silicon, results in embedded epitaxial nanoparticles. Conversely, an amorphous template like Al2O3 results in polycrystalline magnetic particles. In this work, we will discuss the effect of matrix type, specifically yttria stabilized zirconia (YSZ), on the orientation of nanoparticle assemblies. The resultant mechanical and magnetic properties of the multilayer structures will be discussed in the oral presentation.

Development of Transdermal Patch Comprising Centella Asiatica Extract

2010 ◽  
Vol 93-94 ◽  
pp. 389-392
Author(s):  
Kongthong Suwannachote ◽  
Garnpimol C. Ritthidej
Keyword(s):  
Varicose Veins ◽  
Centella Asiatica ◽  
Solid Content ◽  
Matrix Formulation ◽  
Matrix Type ◽  
Peg 400 ◽  
High Adhesion ◽  
Matrix Layer ◽  
The Matrix ◽  
Backing Layer

The purpose of this study was to develop matrix-type transdermal systems containing Centella asiatica extract for treatment of varicose veins by using various polymers such as ethylcellulose (EC), methylcellulose (MC), hydroxypropylmethylcellulose (HPMC), polyvinylpyrolidone (PVP) and hydroxyproply cellulose (HPC-H, HPC-M and HPC-L grades) at various concentrations (0.75%, 1.00%, 1.25%, 1.50%, 1.75% and 2.00%) and using 30% of propylene glycol (PG), diethyl phathalate (DEP), dibutyl phathalate (DBP), glycerine, polyethylene glycol (PEG) 400 as plasticizers. Centella asiatica extract at 7% of solid content of the formulation was added to the matrix formulation prior to pouring on backing layer which was prepared by using either EC as polymer and DBP as plasticizer or polyethylene wrap. It was found that the use of polyethylene wrap as backing layer, PG as plasticizer and HPC as matrix layer showed better appearance, flexibility and compatibility. It was also found that HPC-H and HPC-M showed high adhesion and stickiness. It was concluded that HPC at concentration of 1.75% and 2.00% could be formulated as satisfactory transdermal matrix-type patch for Centella asiatica extract.

Analysis on Performances of Matrix Rectifier under Abnormal Conditions

2011 ◽  
Vol 354-355 ◽  
pp. 1347-1352
Author(s):  
Xiao Liu ◽  
Qing Fan Zhang ◽  
Dian Li Hou
Keyword(s):  
Power Converter ◽  
Simulation Research ◽  
Input And Output ◽  
Compact Topology ◽  
The Matrix ◽  
Input Side ◽  
Harmonic Components ◽  
Four Quadrant ◽  
Order Components ◽  
Low Order

Matrix rectifier (AC-DC MC) is a four-quadrant AC-DC power converter device with compact topology. This paper concerns the influence of abnormal power supply conditions to the matrix rectifier. The input and output performances of matrix rectifier with pure sinusoidal supply voltages are discussed. The input currents are symmetrical sinusoidal without any low-order components. But due to the absence of DC capacitors, the abnormal conditions at input side affect the input and output performances directly, which introduce ripples into the DC output and cause the distortion of input currents. In this paper, the low-order harmonic components in input currents, and ripples at output side are theoretically analyzed under conditions that the input voltages are unbalanced and non-sinusoidal respectively. The simulation research is carried out to verify the theoretical analysis, and the results, which demonstrated the analysis conclusions, are given.

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