Smart Nonaqueous Foams from Lipid-Based Oleogel
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NANOTEKNOLOJİNİN TEMELİ NANOPARTİKÜLLER VE NANOPARTİKÜLLERİN FİTOREMEDİASYON U
Nanoteknolojik gelişmeler, günümüzde nanopartiküllerin ortamdakikonsantrasyonlarının hızla artmasına sebep olmaktadır. İnsan sağlığı veya çevreüzerindeki etkileri hakkında yeterli bilgi olmayan bu materyallerin ortamlardakitespiti ve remediasyonu büyük önem taşımaktadır. Pek çok fiziksel, kimyasal ya dabiyolojik yönte…
Ambient Synthesis of One‐/Two‐Dimensional CuAgSe Ternary Nanotubes as Counter Electrodes of Quantum‐Dot‐Sensitized Solar Cells
Invited for this month's cover is the group of Prof. Zhen Li. The highlighted study results from a collaboration between the University of Wollongong, University of Queensland, Soochow University, and Central China Normal University. Ternary copper silver selenide nanotubes were prepared and explored as high-performan…
Theory of Green functions of free Dirac fermions in graphene
This work is the beginning of our research on graphene quantum electrodynamics (GQED), based on the application of the methods of traditional quantum field theory to the study of the interacting system of quantized electromagnetic field and Dirac fermions in single-layer graphene. After a brief review of the known res…
PENGARUH PENGGUNAAN CANGKANG KELAPA SAWIT SEBAGAI BAHAN TAMBAH TERHADAP MUTU BETON
Dalam pembuatan benda uji metode yang digunakan yaitu Metode SNI , dengan kuat tekan rencana 2 0 M P a. Semen yang digunakan adalah semen PCC. Benda uji yang dibuat berbentuk silinder dengan AE 15 cm, dan tinggi 30 cm. Tidak dilakukan penelitian lebih mendalam dan perlakuan awal terhadap cangkang kelapa sawit, sebagai…
Electrochemical properties of non-stoichiometric nanocrystalline Li 4 Mn 5 O 12 for hybrid capacitors
Non-stoichiometric nanocrystalline Li 4 Mn 5 O 12 was synthesized using the sol–gel method with citric acid at a low-temperature. The effects of the pH condition on the structure, morphology and electrochemical properties were investigated. X-ray diffraction patterns and scanning electron microscopy images confirmed t…
Study on multi-logic polarization and inverse piezoelectric effect of ferroelectric tunnel junction with a composite barrier
By adjusting different polarization status in ferroelectric thin films, effect of saturation polarization, bias voltage, dielectric barrier width, and ferroelectric barrier width on electrical properties of a metal-dielectric-ferroelectric-metal structure are investigated in detail. Our simulation results show that th…
Prediction of Flux Loss in a Nd–Fe–B-Bonded Magnet Under an External Magnetic Field
We have already reported a prediction method of flux losses (FLs) in bonded magnets and showed good agreement between the calculated losses and the measured ones. In this paper, we improve our previously reported method, and investigate a FL of a Nd-Fe-B-bonded magnet under external magnetic fields. To verify the vali…
2-D Magnetic Domain Patterns on Thin Films With Perpendicular Magnetic Anisotropy
We theoretically argue on the connectivity of mazes that are expected to appear in magnetic thin films with magnetic perpendicular anisotropy. Following the finding of persistent magnetic structures and their direct relationship with the connectivity of the mazes existing as demagnetized states in our previous study (…
Hydrogenversusfluorine: effects on molecular structure and intermolecular interactions in a platinum isocyanate complex
At the molecular level, the enantiomerically pure square-planar organoplatinum complex (SP-4-4)-(R)-[2-(1-aminoethyl)-5-fluorophenyl-κ(2)C(1),N][(R)-1-(4-fluorophenyl)ethylamine-κN](isocyanato-κN)platinum(II), [Pt(C8H9FN)(NCO)(C8H10FN)], and its congener without fluorine substituents on the aryl rings adopt the same s…
Fabrication of Thickness‐Controllable Micropatterned Polyelectrolyte‐Film/Nanoparticle Surfaces by Using the Plasma Oxidation Method
We have demonstrated a novel way to form thickness-controllable polyelectrolyte-film/nanoparticle patterns by using a plasma etching technique to form, first, a patterned self-assembled monolayer surface, followed by layer-by-layer assembly of polyelectrolyte-films/nanoparticles. Octadecyltrimethoxysilane (ODS) and (3…
Examination of NON-Contacting Measurement Method of POWER Generation Current inside Single Polymer Electrolyte CELL Using Simulated Annealing
A PEFC (polymer electrolyte fuel cell) is one of desired clean energy converters and it is expected as next-generation energy from advantages of high power generation efficiency and low emissions. In order to raise the power generation efficiency of PEFC, it is necessary to monitor the generation of current inside MEA…
Grasp of Correlation between Degradation Factor and Cell Position of PEFC Stack
The cost reduction and the improvement of a life performance are necessary for the dissemination of Polymer Electrolyte Fuel Cell (PEFC). If the degradation of the fuel cell was able to be diagnosed at the early stage, the life performance can be improved by applying appropriate processing to PEFC. We have been propos…
Consideration on Acid Accelerator Oriented to Reproduction of Sodium Borohydride from By-Product
The authors have proposed and made a hydrogen supply system for FCHEV. This system can generate large amount of hydrogen by hydrolysis of powdery sodium borohydride (NaBH4). In the proposed system, the hydrolysis reaction rate is low even under the presence of nickel catalyst when the temperature is low. As a solution…
Elucidation of Degradation Factor Distribution in a Same Electrode on PEFC
Our proposal diagnostics evaluates the PEFC’s transient response with a resistance polarization, an activation polarization and a diffusion polarization, and derives diagnostics parameters by analyzing this transient response. Because we have already clarified that this diagnostics system was able to diagnose the 25cm…
Microstructure and corrosion behaviour of Al2O3–13 wt-% TiO2 laser alloyed magnesium alloys
Nanostructured Al2O3–13 wt-% TiO2 was prepared on AZ91D magnesium alloy surface by laser surface alloying to improve its corrosion resistance. The microstructure of the laser surface alloyed specimens before and after corrosion tests was characterised by scanning electron microscope and optical microscope (OM). The ph…
HYDRAULIC UNITS FOR DRIVING SYSTEMS OF RUNNING EQUIPMENT IN ROAD CONSTRUCTION MACHINERY
Operational efficiency of multi-functional road construction machines depends on number of working bodies which are simultaneously performing technological operations. Systems for propulsion pto to the running equipment drive and active working bodies of road construction machines are developing in the way of using th…
Growth and impurity characterization of AlN on (0001) sapphire grown by spatially pulsed MOCVD
The reduction of undesirable gas phase reaction between trimethylaluminum and NH3 was achieved by spatially separating the precursors using N2 purge line during AlN growth by metal organic chemical vapor deposition (MOCVD). Under this condition, it was shown that the growth pressure has a strong impact on the surface…
Three-dimensional Biomimetic Technology: Novel Biorubber Creates Defined Micro- and Macro-scale Architectures in Collagen Hydrogels
Tissue scaffolds play a crucial role in the tissue regeneration process. The ideal scaffold must fulfill several requirements such as having proper composition, targeted modulus, and well-defined architectural features. Biomaterials that recapitulate the intrinsic architecture of in vivo tissue are vital for studying…
Study of Microstrip Antenna Behavior with Metamaterial Substrate of SRR Type Combined with TW
This work aims to characterize microstrip antennas working on microwave band, especially their behavior in frequency band from 6 GHz to 16 GHz, when they are on metamaterial substrate. These microstrip antennas allow their structure miniaturization, which is important to the equipment that uses those antennas. The mai…