Determination of properties
-
In recent years, the prediction of the effective transport properties have received a great number of investigations. The present work is dedicated to determining the effective permeability of two-dimensional (2D) doubly porous materials made of an isotropic permeable solid matrix in which elliptical shaped pores of any size are embedded. At the interface between the fluid and the solid, the Beaver–Joseph–Saffman conditions are applied.
10p vithomson 02-07-2024 0 0 Download
-
In this current study, damage in three beam-like structures is identified by means of an improved version of the gapped smooth method, namely a curvature-based gapped smooth method. Only unhealthy data of structures are extracted to determine the developed index.
15p viwalton 02-07-2024 2 1 Download
-
In this work we proposed a simple method to determine the coordinate of interface of two-component Bose-Einstein condensates (BECs) in double parabola approximation (DPA). Based on this idea, the static properties of BECs have been investigated totally in DPA.
6p viambani 18-06-2024 1 1 Download
-
In this report, SYGO:Eu3+ red phosphor have been successfully synthesized by sol-gel method. The X-ray diffraction results show that the sample has a cubic crystal structure, belonging to the space group Ia3d (230) without any doping. Scanning electron microscopy (FE-SEM) combined with EDS was performed to determine the microstructure and elemental composition of the fabricated phosphor.
9p viambani 18-06-2024 4 1 Download
-
In this study, for the first time, CNC synthesized from rice was used to stabilize LEO Pickering emulsion (PE-LEO) with good emulsification properties without the use of any emulsifier. The stability, antibacterial and antifungal properties of PE-LEO were determined to show how well PE-LEO works.
7p viambani 18-06-2024 1 1 Download
-
Ebook "Advances in geophysic - Volume 35: Seismological structure of slabs" provides an overview of the progress made in illuminating the properties of deep slabs and the surrounding mantle, since the introduction of the plate tectonics model to the earth sciences 25 years ago. The thermal and chemical characteristics of the subducted lithosphere are determined through thermal and petrological modelling, with seismological observations providing critical constraints on model parameters.
193p giangdongdinh 28-05-2024 4 2 Download
-
Large deflections of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) sandwich beams are studied in this paper by a nonlinear finite element procedure. The core of the beams is homogeneous while the two faces are of CNTRC material. The effective properties of the two CNTRC face sheets are determined by an extended rule of mixture. CNTs are reinforced into matrix phase through uniform distribution (UD) or four different types of functionally graded (FG) distribution, named as FG-X, FG-A, FG-V, FG-O.
10p dathienlang1012 03-05-2024 0 0 Download
-
The paper "Forced vibration of FG-CNTRC sandwich beams excited by a moving mass" investigates forced vibration of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) sandwich beams excited by a moving mass. The core of the beams is homogeneous while the two faces are of CNTRC material. The effective properties of two CNTRC face sheets are determined by an extended rule of mixture.
10p dathienlang1012 03-05-2024 0 0 Download
-
Lecture Petroleum production engineering - Chapter 1.3: Basic properties and behaviors of oil and gas reservoirs. This lesson provides students with content about: classification of reservoir fluids; pressure vs. temperature diagrams; determine fluid sampling; determine types and sizes of surface; dictate depletion strategy; determine selection of EOR method; determine techniques to predict oil & gas;... Please refer to the detailed content of the lecture!
13p mothuahoa 04-05-2024 3 0 Download
-
A magnetic molecularly imprinted electrochemical sensor was developed for selective determination of sufentanil (SUF) based on carbon paste electrode (CPE) modified with methacrylic acid-ethylene glycol dimethacrylate-coated Fe3O4 nanoparticles (Fe3O4@MAA-EGDMA NPs). The structural properties, chemical structure, and electrochemical behaviors of the imprinted sensor were characterized by X-ray diffraction analysis (XRD), Fourier transform infrared spectroscopy (FT-IR), and square wave voltammetry (SWV), respectively.
14p dianmotminh02 03-05-2024 4 1 Download
-
This study presents the adsorption process of methylene blue and other organic pigments in water samples using synthetic materials derived from agricultural waste combined with Fe3O4. The properties of the materials were determined through Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and nitrogen adsorption-desorption isotherm.
10p dianmotminh02 03-05-2024 3 1 Download
-
The influence of the black seed oil modified epoxy resin (EBSO)/monomer 3,4-epoxycyclohexylmethyl 3,4- epoxycyclohexane carboxylate (BCDE) weight ratio in the coatings based on the compounds and photoinitiator triarylsulfonium hexafluoroantimonate (TAS) on thermal properties of photocrosslinked coatings have been studied. The chemical structure of investigated UV-cured coatings was characterized by IR spectrometric analysis. Their thermogravimetric (TG) and differential scanning calorimetry (DSC) behavior were determined by TG and DSC analysis, respectively.
9p dianmotminh02 03-05-2024 3 1 Download
-
The plasmon characterization of AgNS on paper was systematically investigated by the diffuse reflectance spectroscopy. The fabricated paper-based SERS substrates were used to detect melamine in an aqueous solution and to determine the influence of type RAs on the enhancement factor (EF) and signal uniformity of SERS substrates. Among the four types of RAs, the SERS substrates used NaBH4 have the highest SERS signal with the limit of detection of 10-8 M for melamine and the EF = 2.3 × 109 .
9p dianmotminh02 03-05-2024 4 1 Download
-
This study revealed that the major contributing descriptors of 2D QSAR studies are DeltaEpsilonB and DeltaPsiA and 3D QSAR model proves the steric as well as electrostatic effects determine the binding affinity for the drug development. The results of the current computational studies are useful for further designing novel chemical entities of anti-microbial agent.
19p dianmotminh02 03-05-2024 5 2 Download
-
The curing agent content plays an important role in the synthesis of polymer composites, as it determines the quality and durability of these materials. Cyanethyl-diethylenetriamine (CEDETA) was used as the curing agent for epoxy epikote 828. The effect of CEDETA content on the gel content and fracture toughness (KIC) of epoxy resin, as well as the effect of reinforcing fabric on the mechanical properties of composite materials was studied.
8p dianmotminh02 03-05-2024 3 2 Download
-
The proposed research framework encompasses 3 aspects of atmospheric cues from the website (ARQW) such as ubiquity (UB), ease of use (EOU) and information exchange (IE) to establish the research hypotheses. PLS-SEM results revealed that the atmospheric cues from web sites (ARQW) such as ubiquity (U), ease of use (EOU) and information exchange (IE) are key determinants of millennial’s intention to use the online property website in Malaysia. This discovery provides important findings on the factors that have strong impact on consumers’ intention regarding online property websites.
7p longtimenosee10 26-04-2024 2 1 Download
-
This research determined the psychometric properties of the "Strategies for Parental Involvement during Emergency Remote Teaching - Scale (SPIERT-S). The tool assesses the strategies used by teachers to facilitate parental involvement during ERT.
13p viarnault 25-04-2024 2 1 Download
-
The present research aimed to test an Amharic version of the multi-dimensional Work Task Motivation Scale for Teachers (WTMST), which measures the five pillars of university instructors’ motivation toward teaching and student evaluation tasks based on self-determination theory (SDT).
21p viarnault 25-04-2024 4 1 Download
-
In this study, formulations for new finite elements tailored for use in determination of influence lines for structural responses are proposed. They are then used in the problem of uncertainty propagation to obtain uncertain ordinates of the influence lines.
20p viohoyo 25-04-2024 3 2 Download
-
Part 2 book "Problems in solid state physics with solutions" includes content: Electrons in a weak periodic potential, methods for band structure computations, dynamics of bloch electrons in electric fields, fundamentals of semiconductors, density functional theory, pseudopotentials, projector augmented plane wave method, determination of electronic band structures, crystal defects, electron phonon interaction, transport properties of solids, magnetic properties of solids, optical properties of solids, superconductivity.
196p muasambanhan10 06-04-2024 2 0 Download