Dynamic mechanical analysis

To achieve the aim, the first objective is preliminary experiments on preparation of polypropylene blends with silicone elastomer masterbatch and characterize by analysis of mass composition, mechanical properties, and dynamic mechanical properties to investigate any improvement of properties. The silicone elastomer masterbatch will then be substituted with propylene-maleic anhydride graft copolymer waxes or other compatibilizers.

147p runthenight05 01-03-2023 7 3   Download

This study aims to use CFD analysis of CT scan data from the nasal cavities of a range of older Asian males to investigate the impact of geometric variations between older nasal cavities on the airflow structures and airconditioning capacity of the nasal cavity. Air flow mechanisms, heat transfer rates and humidification efficacy are analysed in order to arrive at a more precise understanding of the role of nasal geometry in the presentation of respiratory ailments.

101p runthenight07 01-03-2023 8 3   Download

Objective: This dissertation explores the influence of pectoral fin structures at different swimming modes on a robotic fish's locomotion behavior; Some objectives are addressed to achieve the mentioned aim as follows: Firstly, new designs based on bio-inspired pectoral fin types are constructed. Secondly, to describe fin deformation and body part movement, novel dynamically mathematical models are developed.

28p extraenglish 26-05-2021 27 5   Download

In this paper, the thermal properties of GFRP, CFRP, and Carbon and Glass fibers reinforced epoxy hybrid composite will be studied. The composites using are all unidirectional.

12p lucastanguyen 01-06-2020 16 4   Download

Cutouts are commonly used as access port for mechanical and electrical structures. Most of the tructures generally work under severe dynamic loading and different constrained conditions during their service life. This may lead to vibration of the structure.

8p tohitohi 19-05-2020 15 4   Download

Objectives of the thesis: The thesis will focus on studying the dynamic behavior of a planar mechanism which has one or more elastic bars, such as calculating the elastic deformation of the links, and assessing the effect of the deformation back on the movement of the structure during the work. The ultimate goal is to help minimize the negative impact of the elastic vibrations as well as limiting the elastic vibrations.

27p xacxuoc4321 09-07-2019 47 4   Download

This thesis aims to develop finite element models for studying vibration of FGM porous beams in thermal environment under moving loads. Both analytical method and finite element analysis are employed in the thesis. The analytical method is used to derive equations of motion for the beam, and the finite element method is then employed to solve the governing equations and to determine the dynamic characteristics of the beams.

28p xacxuoc4321 09-07-2019 37 7   Download

This thesis aims to develop finite element models for studying vibration of the 2D-FGM beam. These models require high reliability, good convergence speed and be able to evaluate the influence of material parameters, geometric parameters as well as being able to simulate the effect of shear deformation on vibration characteristics and dynamic responses of the 2D-FGM beam.

27p xacxuoc4321 08-07-2019 50 8   Download

Chromatin is a highly dynamic structure that plays an essential role in regulating all nuclear processes that utilize the DNA template including DNA repair, replication, transcription and recombination. Thus, the mechanisms by which chromatin structures are assembled and modified are questions of broad interest. This minireview will focus on two groups of proteins: (a) histone chaperones and (b) ATPdependent chromatin remodeling machines, that co-operate to assemble DNA and histone proteins into chromatin....

7p research12 01-06-2013 32 4   Download

The conformational dynamics of NADH oxidase from Thermus thermophiluswas modulated by the Hofmeister series of anions (H2PO4 – ,SO4 2– ,CH3COO – ,Cl – ,Br – ,I – , ClO4 – ,SCN – ) in the concentration range 0–3M. Both cha-otropic and kosmotropic anions,at high concentration, inhibit the enzyme by different mechanisms. Chaotropic anions increase the apparent Michaelis constant and decre-ase the activation barrier of the reaction. Kosmotropic ani-ons have the opposite effect.

10p dell39 03-04-2013 39 3   Download

Sanguinarine has been shown to inhibit proliferation of several types of human cancer cell including multidrug-resistant cells, whereas it has min-imal cytotoxicity against normal cells such as neutrophils and keratino-cytes. By analyzing the antiproliferative activity of sanguinarine in relation to its effects on mitosis and microtubule assembly, we found that it inhibits cancer cell proliferation by a novel mechanism.

12p inspiron33 26-03-2013 41 3   Download

Although the chemical nature of the catalytic mechanism of the serine pro-tease a-chymotrypsin (a-CT) is largely understood, the influence of the enzyme’s structural dynamics on its catalysis remains uncertain. Here we investigate whether a-CT’s structural dynamics directly influence the kinet-ics of enzyme catalysis.

17p inspiron33 23-03-2013 31 3   Download

A comprehensive study of the hydration mechanism of an enzyme in non-aqueous media was done using molecular dynamics simulations in five organic solvents with different polarities, namely, hexane, 3-pentanone, diisopropyl ether, ethanol, and acetonitrile.

13p galaxyss3 19-03-2013 58 4   Download

Phép đo sức bền cơ nhiệt TMCT (Thermal Mechanical Compression Test) được ứng dụng để đo nhiệt độ hóa mềm Tg-r (glass-rubber transition temperature) của bột gạo ở khoảng ẩm độ thấp từ 2.4-19.5 % cơ sở ướt. Kết quả cho thấy Tg-r tăng khi ẩm độ giảm. Nhiệt độ hóa mềm của gạo đo bằng phép đo sức bền cơ nhiệt tương tự với các kết quả được trình bày trong các nghiên cứu khác sử dụng các phương pháp nhiệt lượng kế quét vi sai DSC (Differential Scanning Calorimetry), phân tích cơ nhiệt (TMA-Thermo-mechanical Analysis) và phân tích cơ nhiệt động (DMTA-Dynamic Mechanical Thermal...

12p hoa_bachhop 07-03-2012 84 14   Download

The origin of MSC.ADAMS can be traced back to a program of research initiated by Chace at the University of Michigan in 1967. By 1969 Chace (1969, 1970) and Korybalski (Chace and Korybalski, 1970) had completed the original version of DAMN (Dynamic Analysis of Mechanical Networks). This was historically the first general program to solve time histories for systems undergoing large displacement dynamic motion. This work led in 1971 to a new program DRAM (Dynamic Response of Articulated Machinery) that was further enhanced by Angel (Chace and Angel, 1977).

10p tieutaithan 22-11-2010 97 7   Download