Approaches in mechanical

The limits of current micro-scale technology is approaching rapidly. As the technology is going toward nano-scale devices, physical phenomena involved are fundamentally different from micro-scale ones. Principles in classical physics are no longer powerful enough to explicate the phenomena involved in nano-scale devices. At this stage, quantum mechanic sheds some light on those topics which cannot be described by classical physics. The primary focus of this research work is the development of an analysis technique for understanding the behavior of strongly perturbed harmonic oscillators.

165p runthenight07 01-03-2023 6 3   Download

This research is built upon the determination of the Eigenpairs of one and two dimensional positive differential operators with periodic boundary conditions. The Schrödinger equation was solved for positive operators in both one and two dimensions. Fourier series were used to express the derivatives as the summation of Fourier terms. This led to a novel approach for the calculation of the eigenmodels of a perturbed potential well. The perturbation can be done via an electric field applied to the potential well.

88p runthenight07 01-03-2023 6 3   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 11 2   Download

The objectives of the thesis: The thesis has developed a technique by combining the equivalent linearization method and the weighted averaging value to analyze the responses of some undamped free nonlinear vibrations.

31p extraenglish 24-05-2021 14 3   Download

Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

28p capheviahe27 23-02-2021 25 4   Download

The propose a new method aiming to adjust the TXOP parameter according to a dynamic mechanism that suits the priority of each data type from the existing limitations with TXOP parameter in IEEE 802.11 EDCA; the propose a novel fuzzy logic approach for enhancing the fairness of low priority data flows in IEEE 802.11 EDCA.

27p capheviahe27 23-02-2021 33 3   Download

This paper proposes a framework to develop a deterministic model for the valuation, selection and grading (ranking) of e-suppliers by using Modified Distance Based Approach (MDBA), which has not been used earlier in e-supplier selection.

14p tohitohi 22-05-2020 7 1   Download

This study synthesizes the use of chemicals to prevent one of common concrete durability problems, alkali-silica reaction (ASR), and can help researchers (i) identify widely used potential chemicals and evaluate these chemical solutions to prevent ASR with proper understanding of mechanisms, and (ii) to identify the research gaps in order to develop guidelines and implementation plan on the use of these chemicals for future research.

8p tohitohi 19-05-2020 21 1   Download

The enzymatic properties of chitinase A fromVibrio carchariaehave been studied in detail by using combined HPLC and electrospray MS. This approach allowed the separation ofaandbanomers and the simultaneous monitoring of chitooligosaccharide products down to picomole levels. Chi-tinase A primarily generated b-anomeric products, indicating that it cata-lyzed hydrolysis through a retaining mechanism.

11p fptmusic 11-04-2013 30 2   Download

Cellular regulation is a result of complex interactions arising from DNA–protein and protein–protein binding, autoreg-ulation, and compartmentalization and shuttling of regula-tory proteins. Experiments in molecular biology have identified these mechanisms recruited by a regulatory net-work.Mathematicalmodelsmaybe used to complement the knowledge-base provided byin vitroexperimental methods. Interactions identified byin vitroexperiments can lead to the hypothesis of multiple candidate models explaining the in vivo mechanism. ...

11p awards 05-04-2013 52 3   Download

We have investigated the molecular mechanisms that produce different structural and functional behavior in the monomeric and trimeric forms of seminal vesicle protein no. 4, a protein with immunomodulatory, anti-inflamma-tory, and procoagulant activity secreted from the rat seminal vesicle epithelium. The monomeric and trimeric forms were characterized in solution by CD.

9p dell39 03-04-2013 35 5   Download

This study was undertaken to explore the potential of new therapeutic approaches designed to reactivate cell death pathways in apoptosis-refrac-tory gliomas and to characterize the underlying molecular mechanisms of this reactivation.

12p media19 06-03-2013 37 3   Download

ACTH-stimulated aldosterone secretion can be inhibited by atrio-natri-uretic peptide⁄cGMP. The mechanism behind this modulation has been reported to involve cGMP-dependent activation of phosphodiesterase 2 (PDE2) and hydrolysis of cAMP. Recently it was reported that activation of cGMP-dependent protein kinase II (cGKII) stimulated aldosterone secretion in rat zona glomerulosa cells.

10p vinaphone15 27-02-2013 32 2   Download

One of several potential approaches to study mechanisms of action of bio-logically active compounds is to develop their agonists and antagonists. In the present study, we report the identification of the first known molecule antagonizing the activity of the plant hormone cytokinin at the receptor level.

10p vinaphone15 27-02-2013 33 2   Download

EXTERNAL AUDITOR'S EVALUTIONS OF INTERNAL : AUDIT WORK - A CASCADED INFERENCE APPROACH The trends identified in Figures 1.1 and 1.2 are again clear. First, θ is well above zero when δ is small, indicating that the residential housing market mechanism rewards administrators of effective schools with the wealthiest students when parents primarily assess schools by their effectiveness. When δ is large, θ is close to zero for all J, as no district structure creates the desired rewards when parents are largely unconcerned with school effectiveness....

154p mualan_mualan 25-02-2013 74 12   Download

This paper presents the experiences gained from ongoing research collaboration between the School of Computer Engineering at Nanyang Technological University and the Southampton e-Science centre at the University of Southampton using a serviceoriented approach for complex engineering design optimization. The service-oriented approach enables programmatic collaboration to be realized while maintaining the autonomy of individual codes at the different institutes and organizations. In the current work, a Genetic algorithm optimization logic implemented as a Grid...

6p khangoc239 10-08-2012 52 6   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Experimental investigation on the bi-directional growing mechanism of the foils laminate approach in AAO fabrication

5p dauphong18 09-03-2012 50 4   Download

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Inflammatory mechanisms in ischemic stroke: therapeutic approaches

11p dauphong3 03-01-2012 47 4   Download

Many drugs have unknown, controversial or multiple mechanisms of action. Four recent ‘chemical genomic’ studies, using genome-scale collections of yeast gene deletions that were either arrayed or barcoded, have presented complementary approaches to identifying gene-drug and pathwaydrug interactions. deposited research The fact that much of modern drug research is target-oriented obscures the long history during which the effects of drugs were discovered prior to identification of their targets. There remain many...

4p thulanh19 09-11-2011 53 4   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Open lung approach associated with highfrequency oscillatory or low tidal volume mechanical ventilation improves respiratory function and minimizes lung injury in healthy and injured rats...

14p coxanh_7 31-10-2011 45 2   Download