scholarly journals DERIVATION OF MOTIVATORS FOR THE USE OF ALUMINUM FOAM SANDWICH AND ADVANTAGEOUS APPLICATIONS

2021 ◽  
Vol 1 ◽  
pp. 933-942
Author(s):  
Patrick Hommel ◽  
Daniel Roth ◽  
Hansgeorg Binz
Keyword(s):  
Aluminum Foam ◽  
Industrial Applications ◽  
Selection Method ◽  
Design Knowledge ◽  
Series Production ◽  
Absorption Properties ◽  
Material Combination ◽  
Good Energy ◽  
Innovative Material ◽  
Potential Use

AbstractAluminum foam sandwich (AFS) is an innovative material combination for designing lighter products and has many advantages such as a high bending stiffness at a low density and good energy absorption properties. Although the material is ready for series production, the number of industrial applications is low because of the high costs of the material, a lack of design knowledge and missing reference applications. This paper focuses on the aspect of missing reference applications and how to improve this situation in order to give designers an idea of where the material could be used profitably and to provide the basis for a selection method. Therefore, a systematic literature review is carried out to identify profitable applications with their respective advantages. As a main result, a set of motivators for the use of aluminum foam sandwich is developed, which will support the designer in evaluating the potential use of aluminum foam sandwich.

Nondegenerate two-photon absorption properties of a newly synthesized carbazole derivative

2017 ◽  
Vol 5 (2) ◽  
pp. 470-475 ◽  
Author(s):  
Shu Chen ◽  
Yong-Chao Zheng ◽  
Mei-Ling Zheng ◽  
Xian-Zi Dong ◽  
Feng Jin ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Photon Absorption ◽  
Scanning Microscope ◽  
Absorption Properties ◽  
Carbazole Derivative ◽  
Laser Scanning Microscope ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Potential Use

Nondegenerate two-photon absorption of a newly carbazole derivative is reported, demonstrating its potential use in a two-color two-photon laser scanning microscope.

NANOCELLULOSE AND ITS POTENTIAL USE FOR SUSTAINABLE INDUSTRIAL APPLICATIONS

2020 ◽  
Vol 50 (2) ◽  
pp. 59-64
Author(s):  
Carlos Negro ◽  
Ana Balea Martín ◽  
Jose Luis Sanchez-Salvador ◽  
Cristina Campano ◽  
Elena Fuente ◽  
...  
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Industrial Applications ◽  
High Reactivity ◽  
Environmental Benefits ◽  
Hydroxyl Groups ◽  
Paper Briefly ◽  
Potential Availability ◽  
Potential Use ◽  
Market Perspective

Nanocellulose (NC) and its wide applications have attracted high attention due to its desirable properties such as high surface area, extraordinary mechanical properties, high reactivity and easy modification of NC surface due to the presence of primary hydroxyl groups. NC also presents several environmental benefits, including high potential availability because its production is coming from natural sources, renewability and nontoxicity. This paper briefly summarizes some of the activities of the research group “Cellulose, Paper and Water Advanced Treatments” from Complutense University of Madrid that were presented in CAIQ 2019, including the main types of NC, the production processes and their characterization. Additionally, the most promising NC applications are described such as for paper and board, for wastewater treatment, food and cement-based materials. Moreover, a market perspective of NC is also presented.

Structural features underlying the selective cleavage of a novel exo-type maltose-forming amylase fromPyrococcussp. ST04

2014 ◽  
Vol 70 (6) ◽  
pp. 1659-1668 ◽  
Author(s):  
Kwang-Hyun Park ◽  
Jong-Hyun Jung ◽  
Sung-Goo Park ◽  
Myeong-Eun Lee ◽  
James F. Holden ◽  
...  
Keyword(s):  
Amino Acids ◽  
Molecular Basis ◽  
Amino Acid Sequence Identity ◽  
Structural Features ◽  
Industrial Applications ◽  
Closed Cavity ◽  
Helical Bundles ◽  
Sequence Identity ◽  
Hydrolysis Of ◽  
Potential Use

A novel maltose-forming α-amylase (PSMA) was recently found in the hyperthermophilic archaeonPyrococcussp. ST04. This enzyme shows <13% amino-acid sequence identity to other known α-amylases and displays a unique enzymatic property in that it hydrolyzes both α-1,4-glucosidic and α-1,6-glucosidic linkages of substrates, recognizing only maltose units, in an exo-type manner. Here, the crystal structure of PSMA at a resolution of 1.8 Å is reported, showing a tight ring-shaped tetramer with monomers composed of two domains: an N-domain (amino acids 1–341) with a typical GH57 family (β/α)7-barrel fold and a C-domain (amino acids 342–597) composed of α-helical bundles. A small closed cavity observed in proximity to the catalytic residues Glu153 and Asp253 at the domain interface has the appropriate volume and geometry to bind a maltose unit, accounting for the selective exo-type maltose hydrolysis of the enzyme. A narrow gate at the putative subsite +1 formed by residue Phe218 and Phe452 is essential for specific cleavage of glucosidic bonds. The closed cavity at the active site is connected to a short substrate-binding channel that extends to the central hole of the tetramer, exhibiting a geometry that is significantly different from classical maltogenic amylases or β-amylases. The structural features of this novel exo-type maltose-forming α-amylase provide a molecular basis for its unique enzymatic characteristics and for its potential use in industrial applications and protein engineering.

Freedom of Micro Manufacturing Tool-Free Series Production in Industrial Applications of Micro- and Nanotechnology

2008 ◽  
Author(s):  
Reiner Go¨tzen
Keyword(s):  
Uv Light ◽  
Sol Gel ◽  
Batch Process ◽  
Industrial Applications ◽  
Series Production ◽  
Micro Manufacturing ◽  
Mechanical Parts ◽  
Parallel Processes ◽  
Strategic Direction ◽  
Specific Material

RMPD®, which stands for Rapid Micro Product Development, is a family of technologies designed to generate with a parallel batch process, microstructures, microsystems and/or MEMS or MOEMS in a parallel batch process. Photo polymerized monomer, oligomere and hybrismaterial (sol-gel) polymerized with uv-light and generate the system. The technology’s 3D-CSP (tree dimensional chip sice packaging), RMPD®-multimat (volume specific material propertys), RMPD®-stick2 (mechanical parts directly to a foil, wafer and so on) and RMPD®-nanoface (surface roughness in sub-nm range) have since 1996 been key elements in this worldwide-patented family of technologies, which has allowed System in Packing SiP to develop into a virtually tool-free production process. Additive and parallel processes give these technologies a costefficient and customer oriented strategic direction.

Analysis of the Influence of Static Flow Resistance on the Sound Absorption Properties of Aluminum Foam

2012 ◽  
Vol 535-537 ◽  
pp. 1459-1462 ◽  
Author(s):  
Huai Qian Bao ◽  
Ning Zhang ◽  
Xue Gang Hou
Keyword(s):  
Sound Absorption ◽  
Flow Resistance ◽  
Aluminum Foam ◽  
Circular Tube ◽  
Peak Frequency ◽  
Absorption Properties ◽  
Absorption Frequency ◽  
Porous Aluminum ◽  
Static Flow ◽  
Resistance Value

For the complexity of the internal microstructure of porous aluminum foam, on the basis of Rayleigh-Kirchhoff circular tube model, taking viscosity loss and thermal transmission, the paper establishes a simplified theoretical model for sound absorption properties of aluminum foam. The paper also calculates and analyzes the influence of Static flow resistance on the sound absorption properties in the rigidity and cavity backing. The results show that the peak frequency moves to lower with the increasing of the thickness of the air layer. What’s more, there is a direct corresponding relation between flow resistance and the best sound absorption frequency range of aluminum foam. In a reasonable range of flow resistance value, the capability of sound absorption reach optimal, Aluminum Foam won’t have fine sound absorption capability if the value of flow resistance is too big or small.

Novel Templated Polyphenol for Ionic Conductivity

2001 ◽  
Vol 702 ◽  
Author(s):  
Ferdinando F. Bruno ◽  
Ramaswamy Nagarajan ◽  
Jayant Kumar ◽  
Lynne A. Samuelson
Keyword(s):  
Molecular Weight ◽  
Ionic Conductivity ◽  
High Molecular Weight ◽  
Polyethylene Oxide ◽  
Phenol Formaldehyde ◽  
Industrial Applications ◽  
Water Soluble ◽  
Reaction Conditions ◽  
Water Solvent ◽  
Potential Use

ABSTRACTPhenolic polymers and phenol formaldehyde resins are of great interest for a number of electronic and industrial applications. Unfortunately, the toxic nature of the starting materials (formaldehyde) and harsh reaction conditions required for the synthesis of these polymers have severely limited their use in today’s markets. We present here an alternative, biocatalytic approach where the enzyme horseradish peroxidase is used to polymerize phenol in the presence of a template such as polyethylene oxide. Here the template serves as a surfactant that can both emulsify the phenol and polyphenol chains during polymerization and maintain water/solvent solubility of the final polyphenol/template complex. The reactants and the reaction conditions of this approach are mild and result in high molecular weight, electrically and optically active, water-soluble complexes of polyphenol and the template used. High molecular weight water-soluble polyphenol/polyethylene oxide complexes were formed. The ionic conductivity and potential use of these polymers as polyelectrolytes for battery and solution cell applications will be discussed.

Catalysis and inactivation of tyrosinase in its action on o-diphenols, o-aminophenols and o-phenylendiamines: Potential use in industrial applications

2013 ◽  
Vol 91 ◽  
pp. 17-24 ◽  
Author(s):  
Jose Luis Muñoz-Muñoz ◽  
Maria del Mar García-Molina ◽  
Francisco Garcia-Molina ◽  
Jose Berna ◽  
Pedro Antonio Garcia-Ruiz ◽  
...  
Keyword(s):  
Industrial Applications ◽  
Potential Use

Optimization of Aluminum Foam by Simulated Annealing

2012 ◽  
Vol 573-574 ◽  
pp. 1187-1192
Author(s):  
Xiao Hong Zhang ◽  
Jiang Tao Zhang
Keyword(s):  
Simulated Annealing ◽  
Sound Absorption ◽  
Optimization Design ◽  
Aluminum Foam ◽  
Simulated Annealing Algorithm ◽  
Absorption Properties ◽  
Cavity Structure ◽  
Annealing Algorithm ◽  
Two Parameters ◽  
Single Cavity

According to two parameters combination of the material thickness and air-gap depth, from the angle of pure optimization, this paper obtained the optimal parameters of single cavity and double cavity structure by using the simulated annealing algorithm for single cavity and double cavity of aluminum foam sound absorption structure of systematically optimization design at 100-4000HZ frequency band. Finally, studying effect of increasing the number of cavity on aluminum foam sound absorption properties.

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