Materials Literature
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In this work, a novel family of salt-responsive polymeric hydrogel based on collagen was prepared via simultaneously graft copolymerization of acrylic monomers, acrylic acid (AA) and itaconic acid (IA) onto collagen backbones by a free radical polymerization technique using ammonium persulfate (APS) as initiator and m…
This paper discusses the possibility of using a bomb flight control system in the form of a rapidly rotating heavy rotor jointly suspended in its body. Forced deflections of the rotor axis (gyroscope) in relation to the body axis generate torques, which change the direction of bomb flight and its guiding on the target…
Fructose can be efficiently converted to 5-hydroxymethylfurfural by using the functionalized ionic liquid 3-(2-chloroethyl)-1-methylimidazolium chloride as both solvent and catalyst in the presence of water. This work advances the field and is distinct from earlier efforts in the sense that the observed yields of HMF…
Application of air-coupled ultrasonic transducers for damage assessment of composite panels
The outer parenchyma of carrot was tested using dynamic mechanical analysis (DMA), in air with 90% humidity between 30 and 90°C. Temperature plots of storage (SM i.e. elastic) and loss (LM i.e. inelastic) moduli were obtained. The SM and LM values were the basis for the calculation of the loss tangent (LT), the parame…
Activated carbon (AC) was obtained from lignite of the local resource, Golbasi - Adiyaman (Turkey) by chemical activation. The Golbasi lignite was chosen as the precursor for its availability and low cost. The BET surface area of the activated carbon was found 921 m2/g. The AC was used as an adsorbent for Crystal Viol…
Significant progress in controlling low temperature cracking has been achieved by introducing the Bending Beam Rheometer (BBR) and placing appropriate limits on stiffness and relaxation rate (i.e., S and m-value). However, with the increase in types of modifiers and extender oils used to achieve special low temperatur…
Grain boundary engineering aims to improve material performance by optimizing the structure of interfaces in polycrystalline metals. In the present work we grain boundary engineer the Ni-Fe-based superalloy 706 and measure the effect of this process on high temperature crack growth rate. The microstructure of traditio…
In order to cool rotors effectively,the air gap of motors should be increased as much as possible by decreasing the sleeve thickness,and the motor performance must be effectively fulfilled,the strength of sleeve and the permanent magnet must be checked.In this paper,analytical formulas of stresses,strains and displace…
The inertial confinement fusion program has proposed a laser capable of producing ignition and gain as the next step. Several choices exist in the design and production of capsules. In this paper the important features of each ablator material and the status of production are summarized. The design consists of ablator…
Bioplastik merupakan plastik yang terbuat dari sumber yang dapat diperbaharui yaitu dari senyawa - senyawa dalam tanaman misalnya pati. Penggunaan pati sebagai bahan utama pembuatan plastik memiliki potensi yang besar karena di Indonesia terdapat berbagai tanaman penghasil pati seperti singkong, jagung, beras dan tana…
Chitin from chitinaceous prawn shell waste, fungal biomass of Aspergillus fumigatus and Penicillium waksmanii was used as natural substrate for partially purified chitinase of Trichoderma harzianum to produce N-acetyl-D-glucosamine (GlcNAc), a medically important amino sugar.The isolated chitins were characterized wit…
Y3Fe5O12 (YIG) was prepared through sol-gel technique and sintered at three different temperatures (1000-1200δC). Various characterizations on the morphological and structural properties of produced YIG have been done as to understand the potential of this unique magnetic type nanomaterial to be used in the catalyst a…
The performances of two types of multi-walled carbon nanotubes-based composite electrodes, i.e., MWCNT-Epoxy (CNT-Epoxy) and Natural Zeolite-modified-MWCNT-Epoxy (NZ-CNT-Epoxy) are described in order to use them for electroanalytical application.Both electrodes were synthesized, electrically and electrochemically char…
The central cell type involved in the initial perception of odors and transduction of the sensory signal are the olfactory receptor neurons (ORNs) located in the olfactory neuroepithelium of the nasal cavities. The olfactory epithelium is a unique system similar to the neuroepithelium of the embryonic neural tube, in…
The stromal compartment of adipose tissue harbors mesenchymal stem cells (MSCs) (also called stromal stem cells) that display extensive proliferative capacity and multilineage differentiation potential. Such cells offer a practical avenue of generating patient-matched tissue for use in regenerative medicine. It is rel…
Abstract Nanocrystalline sensors having the general formula ZnO + x wt% CeO 2 , where x = 0, 2, 4 and 6 were prepared by chemical precipitation method and sintered at 400, 600 and 800 °c for 2h in static air atmosphere. The crystal structure and the morphology of the prepared samples were investigated and characterize…
Revision of the Standard for Evaluation of Concrete Compressive Strength(GB/T 50107-2010) is expounded and it is discussed that which method should be adopted for evaluation of concrete compression strength during implementation of the standard provides guiding significance for engineering technicians to understand an…
A boundary value problem on a circular nanometer hole in an elastic plane loaded at the boundary and infinity is solved.It is assumed that complementary surface stresses are acting at the boundary of the hole.Based on Goursat-Kolosov’s complex potentials and Muskhelishvili’s technique,the solution of the problem is re…
Ultra Performance Liquid Chromatography (UPLC) is a relatively new technique giving new possibilities in liquid chromatography, especially concerning decrease of time and solvent consumption. UPLC chromatographic system is designed in a special way to withstand high system back-pressures. The quality control analyses…