Properties of matrices

Cellulose at the nanoparticle scale has been studied as a reinforcement for biodegradable matrices to improve film properties. The goal has been to investigate the properties of starch/gelatin/cellulose nanocrystals (CNC) films.

8p vihermione 06-01-2023 6 1   Download

In recent studies, the nature and magnitude of the temperature gradients developed in ultra-high pressure liquid chromatography (UHPLC), were found to be dependent on the heat conductivity properties of the column matrices, but also, on the principle used for controlling the temperature over the column.

16p viginny 23-12-2022 4 1   Download

In this study, we performed the pharmacophore modeling and 4D-QSAR research of alkynylphenoxyacetic acid analogues as CRTh2 receptor opponent agents by utilizing the electron conformational genetic algorithm method. Quantum chemical calculations and conformational analyses of the compounds were carried out at HF/6-31G* level. Then electron conformational matrices of congruity were prepared for each conformer of each compound, which are represented by electronic and structural properties.

21p tudichquannguyet 29-11-2021 5 0   Download

The aim of this work was to prepare biodegradable starch aerogels as drug carriers. The effective parameters in the synthesis and the optimal values of these parameters were determined using Minitab experimental design software. Ibuprofen was selected as a model drug for the dissolution study and loaded into optimized aerogel during the last solvent exchange step. The Fourier Transform Infrared Spectroscopy (FTIR) analysis showed that ibuprofen has been successfully loaded into the aerogel matrix without any effect on the aerogel nature. The drug loading was calculated to be 29%.

20p tudichquannguyet 29-11-2021 7 1   Download

The layout of the thesis: In addition to the introduction, conclusion, list of symbols and abbreviations, list of tables, list of images and drawings, list of published works related to the thesis. Project, appendices and references.

27p larachdumlanat129 20-01-2021 12 0   Download

In the past decades, Lactobacillus species have been widely used in the market because they are thought to have biological properties and beneficial health effects. Conventional microbiological methods are often time consuming and labor-intensive. Real-time polymerase chain reaction (PCR) method will allow to identify and quantify rapidly Lactobacilli probiotics in food. In this study, the thermal shock protein target region (hsp60) was used to identify Lactobacillus acidophilus species. The limit of detection, specificity, and accuracy were of 104 , 100 %, 100 %, respectively.

6p kethamoi9 01-12-2020 19 0   Download

The field of protein sequence analysis is dominated by tools rooted in substitution matrices and alignments. A complementary approach is provided by methods of quantitative characterization.

6p viflorida2711 30-10-2020 8 1   Download

Agilent’s innovative EMR-Lipid and Captiva EMRLipid sorbents efficiently replace the traditional QuEChERS d-SPE clean-up products in selective lipid removal from fatty matrices, thus improving instrumental analytical reproducibility, reliability, and long-term use. These products have dual functionality; a hydrophobic interaction between the sorbent with long aliphatic lipid chains of the matrices, which allows for complete lipid retention, and a size exclusion property that does not retain analytes, thus this maximizes, in principle, analyte recovery in any sample.

7p chauchaungayxua8 02-10-2020 16 0   Download

New membrane materials based on cross-linked poly(n-butyl acrylate) (nBA), have been used successfully as calcium ion-selective membranes. These membrane materials possess selfplasticising property and hence do not require plasticisers. The photocurability and good adhesion characteristics of these polymer matrices enable workable solid-state calcium ion sensors to be fabricated by simple photocure procedures employing the calcium ionophore ETH5234 and a lipophilic additive as ion sensing components.

13p 12120609 01-06-2020 9 1   Download

Thanks to its specific chemical and physical properties, graphene has aroused growing interest in many fields of Science and Technology. The present study focuses on the properties of microcrystalline chitosan (MCCh): A compound known to increase the biocompatibility of various matrices, including those made of graphene layers, enabling the controlled release of molecules of therapeutic compounds.

9p vijiraiya2711 27-05-2020 8 1   Download

The paper presents a complete generalized procedure based on the Euler-Lagrange equations to build the matrix form of dynamic equations, called dynamic model, for robot manipulators. In addition, a new formulation of the Coriolis/centrifugal matrix is proposed. The link linear and angular velocities are formulated explicitly. Therefore, the translational and rotational Jacobian matrices can be derived straightforward from definition, which make the calculation of the generalized inertia matrix more convenient.

16p 12120609 23-03-2020 17 0   Download

As an emerging market, Chinese stock market is playing an increasingly important role in global financial system. This market deserves more detailed studies for its potential to develop with the progress of Chinese financial reform. By analyzing topological properties and their temporal changes, this paper provides a new perspective of network evolution for Chinese stock market with the emphasis on interdependencies among stocks. The sample of this study is the selected constituent stocks of CSI 300 index.

22p trinhthamhodang2 21-01-2020 17 0   Download

Polypyrrole Sn(IV) phosphate, an organic–inorganic composite cation-exchanger was synthesized via sol-gel mixing of an organic polymer, polypyrrole, into the matrices of the inorganic precipitate of Sn(IV) phosphate.

9p kethamoi1 20-11-2019 13 0   Download

The main goal of the present work is to study the mechanical response of glass/epoxy composites when exposed to cement and geopolymer (metakaolin) mortars, as it happens in Civil Engineering applications. For this purpose, specimens were embedded into mortar followed by a period of curing, which was done under the air laboratory environment. For cement, curing was also performed inside a container filled with water. The specimens were removed from the mortars after 30, 60 or 90 days of curing and then tested.

26p christian2605 11-10-2019 67 3   Download

We are concerned about various strongly clean properties of a kind of matrix subrings L(s)(R) over a local ring R. Let R be a local ring, and let s ∈ C(R). We prove that A ∈ L(s)(R) is strongly clean if and only if A or I2−A is invertible, or A is similar to a diagonal matrix in L(s)(R).

8p nutifooddau 21-01-2019 11 0   Download

This study focuses on linear dynamical systems whose dynamics are affine in the control input. Such dynamics are extensively considered to be rewritten into a canonical form, namely the passive port-Hamiltonian representation in order to further explore some structural properties such as interconnection and damping matrices, Hamiltonian storage function and dissipation term.

4p vidanh95 12-12-2018 25 0   Download

In this paper, some new results on the preservation of many good cryptographic properties of MDS matrices under direct exponent transformation are presented. These good cryptographic properties include MDS, involutory, symmetric, recursive (exponent of a companion matrix ), the number of 1 0 s and distinct elements in a matrix, circulant and circulant-like

13p dieutringuyen 07-06-2017 28 1   Download

Cartilage provides our joints with load support and lubrication for decades of continuous use with minimal friction or damage. These unusual bearing properties are in fact due to a biphasic tissue structure (containing both fluid and solid matrices) and the pressurization of interstitial fluid during dynamic deformations.

95p loixinloi 08-05-2013 42 1   Download

Let A be an n × n matrix, whose entries are independent copies of a centered random variable satisfying the subgaussian tail estimate. We prove that the operator norm of A−1 does not exceed Cn3/2 with probability close to 1. 1. Introduction Let A be an n × n matrix, whose entries are independent, identically distributed random variables. The spectral properties of such matrices, in particular invertibility, have been extensively studied (see, e.g. [M] and the survey [DS]).

28p dontetvui 17-01-2013 50 6   Download

CLASSICAL GEOMETRY — LECTURE NOTES DANNY CALEGARI 1. A CRASH COURSE IN GROUP THEORY A group is an algebraic object which formalizes the mathematical notion which expresses the intuitive idea of symmetry. We start with an abstract definition. Definition 1.1. A group is a set G and an operation m : G × G → G called multiplication with the following properties: (1) m is associative. That is, for any a, b, c ∈ G, m(a, m(b, c)) = m(m(a, b), c) and the product can be written unambiguously as abc. (2) There is a unique element e ∈ G called the...

42p tiramisu0908 31-10-2012 95 9   Download