Mechanical systems

Is a branch of polymer science dealing with analysis and characterisation of polymers. üThe complication of macromolecular chains, the dispersion in molecular weight, tacticity, crystallinity, orientation, composition of polymers etc. and complex morphological systems ⇒ analysis of polymer ≠ the small organic materials ⇒ Focus on viscoelastic properties, dynamic mechanical testing.

114p buitiendung87 06-01-2011 340 154   Download

A reaction happens need the energy to vibrate the molecules and the reactant concentration enough. The energy here is often provided by heat. However, in living system, high temperature may harm the biological structure Truly that the concentration in living system is very low. So living organisms solve these problems by using enzyme

94p zingzing09 21-10-2012 66 9   Download

Encapsulation/Reuse Mechanisms –Function Blocks, Functions, Data Types, Programs •Application-adapted Languages –Ladder Diagram (LD) for logic control (“power flow”) –Function Block Diagram (FBD) for regulatory control (“data flow”) –Sequential Function Chart (SFC) for state-machine control –Structured Text (ST) for information processing –Instruction List (IL) for assembly-level programming •A Mature, Internationally Adopted Standard –First edition: 1993 –Second edition: 2001...

25p ahnhea 13-10-2012 67 8   Download

State the mechanism for steam generation in a PWR. Using simplified diagrams, identify and explain the purpose of the major components and equipment involved with a PWR. Identify the equipment used to control reactor power.

24p giotletinh_hd2009 14-10-2013 85 8   Download

Lecture Operating System: Chapter 09 - Security presented The security environment, Basics of cryptography, User authentication, Attacks from inside the system, Attacks from outside the system, Protection mechanisms, Trusted systems.

56p talata_1 22-09-2014 90 7   Download

Introduction to shock & vibration gives an introduction to vibration through a description of the most common mechanical parameters leading to the behaviour of simple mass spring systems. Furthermore the different types of signals and their description is treated and the conversion between the different parameters is described mathematically and graphically. Finally the measurement units are defined.

36p vanquanpl 18-05-2015 58 8   Download

This work demonstrated the potential of US for mitigating membrane fouling. However, the integration of the US transducers within the membrane system will be a major challenge for the application of US in membrane cleaning. It is more appropriate that US is used as pre-treatment to the membrane system, the transducers can be placed prior to the coagulant feed line. Further work on the determination of the detailed mechanisms associated with enhancing coagulation would enable optimisation of the system with regard to process, cost and energy efficiency.

108p runthenight05 01-03-2023 16 3   Download

The aim of this Master of Engineering (MEng) - Aerospace thesis is to study the structural response and failure of aerospace grade composites during exposure to fire. Key aspects of the research are to analyse the thermal and mechanical responses of laminates and sandwich composites in high temperature and fire environments, which result in softening and structural failure. The research is concentrated on carbon/epoxy laminates and sandwich composites, which are the most common composite materials used in aerospace structures.

209p runthenight05 01-03-2023 10 3   Download

In the course of current research the procedure of obtaining of the piecewise linear vibration systems time and frequency responses have been developed. The method is partly analytical and partly numerical and is based on combining of linear solutions of different sections in a cycle of motion. In a row with the method of obtaining of the exact steady state time and frequency response, also it is provided sensitivity analysis of the vibration isolator.

86p runthenight07 01-03-2023 12 3   Download

Detailed objectives of this study are: to analyze the risk of failure and probability of failure of existing reinforced concrete bridges qualitatively and quantitatively; to consider the effects of interactions among various deterioration parameters and among bridge components on system failure; to identify major durability related distress mechanisms of deterioration of reinforced concrete bridges and model the subsequent risk of failure of bridge system;…

163p runthenight07 01-03-2023 9 3   Download

The main aim of this study is to investigate utilising root-like architectures to improve the interfacial strength of pin-integrated hybrid composite-metal structures. Joints are critical elements in aircraft structures and require special consideration due to their vital role in the structural integrity of airframes. Although bonded and bolted systems are used commonly in engineering applications, pinning technologies have shown tremendous potential for hybrid joints.

198p runthenight04 02-02-2023 8 2   Download

The specific research objectives of this study are: 1. The development of a high throughput method for evaluation of alloys (5xxx Al as model materials in this work) subject to pitting; 2. Understanding the roles of variation in functional groups' in determining the inhibition efficiency; 3. Elucidating the inhibition mechanisms; and 4. Unveiling the role of intermetallic present in Al matrix and their contribution to the inhibition mechanism, particularly the long-term durability of the inhibitor systems.

104p runthenight04 02-02-2023 11 2   Download

The present study draws from two major bodies of literature: (1) research on leadership, which recognizes the important role of leaders in driving organizational performance and that leadership style may differ across individuals; and (2) the MCS literature, including RM concepts, in which control systems are viewed as mechanisms to “assist the organization in managing its risk and to promote effective governance processes” (Krogstad et al., 1999, p.

310p runthenight04 02-02-2023 5 2   Download

The aim of this Masters of Engineering (MEng) - Aerospace thesis was to investigate the durability of Piezoelectric Wafer Active Sensors (PWAS) for the health monitoring of composite structures. One significant challenge faced by the aviation industry is the cost and time associated with maintaining aircrafts, in particular, aging airliners. Structural Health Monitoring (SHM) is a possible approach to reduce the high cost of inspection and maintenance.

164p runthenight04 02-02-2023 13 2   Download

The nasal route for drug administration has the potential for local and systemic delivery of a wide variety of therapeutics. Nasal spray drug delivery has the potential to administer drugs to the bloodstream, avoiding the use of painful needles. While there is great potential, studies in the area are limited and somewhat conflicting. This study aimed to support the improvement of nasal drug delivery through experimental work on a model nasal cavity and through experimental characterisation of nasal spray behaviour. Four different brands of nasal spray were investigated.

91p runthenight04 02-02-2023 9 3   Download

Object and scope: Small ship diesel engines with the range of power from 50 hp to 100 hp; traditional diesel fuel with 0.05% sulfur content, ULSD with 0.001% sulfur content, and Biodiesel originated from coconut oil; fabrication of ultrasonic wave-based equipment/system to produce homogeneous fuel blend;fuel supply system, exhaust system, and control and test system of the engine; testing equipment for engine power and emissions parameters.

27p closefriend09 16-11-2021 19 5   Download

The influence of some structural factors and utilisation conditions on traction-gripping capacity and stability is determinated to improve working effeficiency of the rubber-tired agrimotor system assembled with a twogang disc plow working on steep terrain.

27p gaocaolon12 18-06-2021 26 4   Download

Research purpose: Using computational chemistry methods to study the mechanism of hydrogenation CO on the transition metal catalyst systems of Ni, Cu, Co, bimetallic catalysts NiCu, CoCu and catalytic systems bearing cluster on oxide carriers: MgO, Al2O3 and activated carbon (AC); compare and clarify the role of catalyst centers in single or bimetallic catalyst systems; clarifies the role of carriers (MgO, Al2O3 and AC) in the hydrogenation of CO.

27p thebadguys 08-06-2021 27 4   Download

Purpose: Using the density functional method (DFT) to find out the mechanism of CO2 hydrogenation reaction, the main product, by-products, the optimal reaction path, compare and evaluate the catalytic ability of the Ni5 cluster, Ni5/MgO, and Ni5/AC.

25p thebadguys 08-06-2021 12 3   Download

To study relation of molecular structural changing between polypropylene microcomposite system and the particle fillers with varies phase interactions by using solid-state NMR(ssNMR) spectra.Therein,emphasizing the molecular flexibility on mechanical properties of materials.

22p capheviahe27 23-02-2021 11 2   Download