Materials Literature
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We present temperature-dependent magnetotransport experiments around the charge neutrality point in graphene and determine the amplitude of potential fluctuations $s$ responsible for the formation of electron-hole puddles. The experimental value $s\ensuremath{\approx}20$ meV is considerably larger than in conventional…
We present a theoretical analysis of the Kohn singularity and Kohn anomaly in the superconducting phase of a three-dimensional metallic system. We show that a phonon mechanism-based Cooper pairing in a Fermi liquid metal can lead to these phenomena quite naturally. The results are discussed against the background of s…
By controlling the pH of the reaction system, a dilacunary γ-Keggin silicotungstate [Cu(en)2(H2O)][H2en]{γ-SiW10O36[Cu(en)2(H2O)]2}·7.5H2O (1) (en = ethylenediamine) has been hydrothermally synthesized by the reaction of CuCl2 with α-H4SiW12O40 and characterized by IR spectra, thermogravimetric analysis, and single-cr…
The anisotropy of transmission spectra was investigated in TlGaS2 crystals. An intensive transmission line was found in samples placed between two crossed polarizers. Ground and excited states of excitons were detected in reflectivity spectra of ТlGaS2 crystals measured in Е||a and Е||b polarizations. The reflection s…
Decolorization of synthetic and industrial wastewaters from textile industry by the anamorph R1 of white rot fungiBjerkandera sp. was evaluated. The presence of NaCl and Na2CO3 wastewater concentration and treatment with non-sterile wastewater on decolorization were analyzed. In addition, the decolorization effect on…
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BCS class II drugs pose challenging problems in their pharmaceutical product development process because of their low solubility and dissolution rates. They require enhancement in solubility and dissolution rate in their formulation development especially solid dosage forms such as tablets and capsules. Several conven…
Abstract Graft copolymers of isoprene (Is), styrene (St), and methyl methacrylate (MMA) monomers (MIS) with typical core–shell structure were synthesized by seed emulsion polymerization and used as a toughening agent for preparation of polyvinyl chloride (PVC)/MIS blends. The St and MMA monomers were separately grafte…
The photochemistry of [CpRu(CO)2]2 in P(OMe)3/CH2Cl2 solution has been studied using picosecond time-resolved infrared (TRIR) spectroscopy. Photolysis at 400 nm leads to the formation of 17-electron CpRu(CO)2(•) radicals, which react on the picosecond time scale to form 19-electron CpRu(CO)2P(OMe)3(•) adducts. The TRI…
Karo Pit Block D Merelani Hills Arusha Region Tanzania Figure 1. The finest single crystal of fluorapatite found in the December 2007 Karo pit pocket and a schematic (Shape program) showing the fac...
Symmetry-mode and spontaneous strain analysis has been carried out for the structural transitions taking place in Fe(1+y)Te and REFeAsO compounds on cooling from room temperature. The P4/nmm → P21/m structural transition occurring in Fe(1+y)Te is induced by a single irreducible representation E(g), indicating a pure f…
In this study, we present the theoretical investigation of type-II InAs/GaSb superlattice p-i-n detector. Kronig-Penney and envelope function approximation is used to calculate band gap energy and superlattice minibands. Variational method is also used to calculate exciton binding energies. Our results show that carri…
An electrochemical polishing process for an n-GaN(0001) surface with a subsurface damage layer has been developed that involves irradiating with ultraviolet (UV) light and applying a voltage. In this method, a positively biased GaN substrate is exposed to UV light to oxidize its surface. The oxide layer does not disso…
An improved multi-component two-dimensional hybrid model is presented for the simulation of Trichel pulse corona discharge in dry air (O2:N2=1:4). The model is based on the plasma hydrodynamics and the chemical models, in which 12 species (e, O, O2, O3, O2+, O4+, O2-, O-, N2, N2+, N4+, and N2O2+) and 27 collision reac…
Unsichtbares sichtbar machen: Ein 13CO-NMR-CEST-Experiment (CEST=chemical exchange saturation transfer) wurde zur Untersuchung „unsichtbarer“ angeregter Proteinzustände mit Lebensdauern von 5 bis 50 ms entwickelt. Die chemischen 13CO-Verschiebungen zusammen mit den 15N-CEST-Profilen zeigen, dass die A39G-FF-Domäne sic…
The electromagnetic wave absorption characteristics of composite cement-based building material have attracted much interest in recent times. Researchers have mainly focused on the 2 GHz to 12 GHz frequency range while the authors have investigated the mobile and WiFi frequency bands. The determination of characterist…
Abstract The novel biphenyl‐based ligand N,N′,N″,N″′‐tetrakis(2,2′‐bipyridin‐6‐ylmethyl)‐4,4′‐dimethyl‐1,1′‐biphenyl‐2,2′,6,6′‐tetramine (6) with 12 nitrogen donor atoms has been synthesized. Ligand 6 is able to host two metal ions in an octahedral coordination sphere. This was shown by the synthesis of the dinuclear…
저장성 연장을 위하여 수확 후 PA 필름으로 포장한 머스크멜론을 초기 저장온도 $2^{\circ}C$ 와 $7^{\circ}C$ 로 30일간 1차 저장 한 후, 시중 유통온도인 $10^{\circ}C$ 로 옮겨서 27일(총 저장 57일)간 저장하면서 품질을 측정하였다. 30일간 1차 저장 한 후, $10^{\circ}C$ 로 옮겨서 5일(총 저장 35일)간 저장한 멜론의 중량 감소율이 7-control은 6.4%로 상품성이 저하되었지만, 2-PA 처리구는 2.2%로 중량 감소율이 가장 적었다. 초기 머스크멜론의 가용성고형물 함량과 산도는 각각 $10.8^{\circ…
A directional point‐to‐point growth of microwires of gold nanoparticles (AuNPs) self‐organized on Aspergillus niger (A. niger) templates by utilizing positive phototropic fungal response to different spectral ranges of visible light is reported. A. niger serves as a living template for the self‐organization of monosod…
Using synchrotron X‐ray diffraction and diamond anvil cells we performed in situ high‐pressure studies of mullite‐type phases of general formula Al 4+2 x Si 2−2 x O 10− x and differing in the amount of oxygen vacancies: 2:1‐mullite ( x = 0.4), 3:2‐mullite ( x = 0.25), and sillimanite ( x = 0). The structural stability…