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Materials and structure

Xem 1-20 trên 963 kết quả Materials and structure
  • The main goals of this chapter are to: Understand how important sourcing decisions go beyond simple material purchasing decisions, demonstrate the “bullwhip effect” and how it is important to synchronize the flow of material between supply chain partners, describe how characteristics of supply and demand have an impact on structuring supply chains,...

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  • The thermogravimetric method was used to determinate the kinetic parameters as the activation energy, the pre-exponnential factor and the order of reaction. The three constituents of balsa (i.e. hemicellulose, cellulose and lignin) were well identified and the decomposition temperature region well characterized. The presence of a large quantity of water affects the thermal decomposition behaviour of wood inducing notably a maximal degradation temperature.

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  • The objective of the aircraft and naval industries is the optimization of structures in terms of lightening and strength. Thus, dual material plates, consisting of a light core covered by face sheets, are frequently used instead of solid plates because of their high bending stiffness-to-weight ratio.

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  • Over the last few years, the primary state of materials has been succesfully described via the use of a calculation method in physics - Ab initio calculations. In this paper, the results of the ab initio study on the bulk structure of iron nitride are presented.

    pdf6p vikoenigsegg 29-09-2022 1 0   Download

  • Feruloyl esterase catalyze the hydrolysis of a wide variety of glycosidic linkages between two or more carbohydrates or between a carbohydrate and a non-carbohydrate moiety. Thereby, they play a role in the initial degradation of lignocelluloses, which may be advantageous for the efficient degradation of the plant cell-wall complex that contains both diverse sugar residues and esterified structures.

    pdf8p vikoenigsegg 26-09-2022 4 1   Download

  • This research might lead to the development of viable hybrid structured materials for various applications. In addition, this study outlines a novel advanced approach for creating hybrid 2D nanostructured materials with superior characteristics.

    pdf6p vibentley 08-09-2022 12 1   Download

  • (BQ) Ebook part 1 presents the following content: Chapter 1: Self-Assembling Cyclic Peptide-Based Nanomaterials; Chapter 2: Designer Nanomaterials for the Production of Energy and High Value-Added Chemicals; Chapter 3: Supramolecular Receptors for Fullerenes; Chapter 4: Click Chemistry: A Quote for Function; Chapter 5: Supramolecular Interactions and Smart Materials: C–X…X′–M Halogen Bonds and Gas Sorption in Molecular Solids; Chapter 6: Application of Advanced Solid-State NMR Techniques to the Characterization of Nanomaterials: A Focus on Interfaces and Structure; Chapter 7: New Tools for ...

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  • Investigation on the influence of beam theory and partial foundation support on natural frequencies play an important role in design of structures. In this paper, fundamental frequencies of a bidirectional functionally graded sandwich (BFGSW) beam partially supported by an elastic foundation are evaluated using various beam theories.

    pdf16p viaudi 29-08-2022 1 1   Download

  • Contact mechanics is a topic that performs the investigation of the deformation of solids that touch each other at one or more points. A principal distinction in contact mechanics is between stresses acting perpendicular to the contacting bodies' surfaces and stresses acting tangentially between the surfaces. This study focuses mainly on the normal stresses that are caused by applied forces.

    pdf9p viaudi 29-08-2022 3 1   Download

  • Ebook Illustrated design of reinforced concrete buildings (8th edition): Part 1 presents the following content: Chapter 1 Introduction to Structural Design; Chapter 2 Loads and material ; Chapter 3 Analysis and design approximations; Chapter 4 Limit State Theory for R.C. Members; Chapter 5 Structural behavior of R.C. elements and detailing of reinforcement; Chapter 6 Design of Members; Chapter 7 Project I: Design of Single Storey Public bulding.

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  • (BQ) Ebook Automotive engineering: Powertrain, chassis system and vehicle body – Part 1 includes the following content: Section 13 vehicle control systems, section 14 intelligent transport systems, section 15 vehicle modelling, section 16 structural design, section 17 vehicle safety, section 18 materials, section 19 aerodynamics, section 20 refinement, section 22 exterior noise, section 23 instrumentation and telematics.

    pdf438p runordie6 10-08-2022 0 0   Download

  • (BQ) Ebook Transmission electron microscopy: A textbook for materials science - Part 2 includes the following content: using convergent-beam techniques; amplitude contrast; phase-contrast images; thickness and bending effects; planar defects; imaging strain fields; weak-beam dark-field microscopy; high-resolution TEM; other imaging techniques; image simulation; processing and quantifying images; X-ray spectrometry; X-ray spectra and images; qualitative X-ray analysis and imaging; quantitative X-ray analysis; spatial resolution and minimum detection; electron energy-loss spectrometers and...

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  • (BQ) Ebook Reinforced masonry engineering handbook clay and concrete masonry: Part 2 presents the following content: Chapter 1 - materials, chapter 2 - masonry assemblage strengths and properties, chapter 3 - loads, chapter 4 - distribution and analysis for lateral forces, chapter 5 - design of structural members by allowable stress design, chapter 6 - design of structural members by strength design.

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  • This research project investigates the influence of decoration and decorating on a fashion design practice, exploring the transformative effects of both in relation to surface and structure. Decoration is considered an after-effect, an element that can be differentiated from the object it adheres to, sometimes making it superfluous to the object’s function. In this project I consider decoration as having its own function – the ability, through its link to the ‘exterior’ world, to transform the shape, appearance and materials of forms by modifying their façade.

    pdf100p runordie3 06-07-2022 2 0   Download

  • Once the mechanical properties of printed TPU are characterised, a novel, low cost, and environmentally friendly method for concrete casting using printed TPU moulds is proposed in this thesis. The findings of this thesis will provide clear guidelines for the selection of processing parameters for additively manufactured TPU parts and the method of casting complicated concrete structures with additively manufactured TPU mould.

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  • Bi1-xEuxFeO3 (BEFO) (x = 0.00 ÷ 0.10) materials were prepared by sol-gel method. The crystal structural, Raman scattering, magnetic and optical properties of BEFO were investigated by X-ray diffraction (XRD), Raman scattering spectroscopy, magnetic hysteresis (M-H) loops and fluorescence spectroscopy (FL), respectively.

    pdf7p vimelindagates 18-07-2022 4 1   Download

  • This report presented an effective way to synthesize MnO2/graphene nanocomposites using the plasma electrolysis method for photocatalytic degradation of methyl orange dye in water. The morphology, structure, and chemical composition of MnO2/graphene nanocomposites materials were investigated through scanning electron microscopy (SEM), Raman spectra, and Fouriertransform infrared (FTIR) spectroscopy, respectively.

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  • Fe68Pd32 nanoparticles were prepared by sonoelectrodeposition with subsequent annealing at 600 oC for a series of times from 1 h to 6 h. The annealing transformed disordered face-centered cubic (fcc) phase in the as-prepared samples into a multi-phase material containing an ordered L10 FePd, fcc FePd and body-centered cubic (bcc) Fe phases.

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  • An optical mode cross-connect (OMXC) between fundamental modes using a multimode interference coupler (MMI) with high performance has been proposed in this paper. These basic modes can be transmitted in turn or at the same time to any input and be able to select arbitrary outputs.

    pdf5p vigeneralmotors 13-07-2022 8 4   Download

  • This paper presents a novel design of the microactuator with a double stepped beam structure for large out-of-plane deflection output applied to microvalves. The design and analysis of the out-of-plane microactuator are implemented by the finite element method. Silicon is selected as the material of the actuator and the beam motion is generated by the Joule heating effect.

    pdf4p visherylsandber 04-07-2022 2 1   Download

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