Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The paper deals with system of casting defects classification problematics and creation of defects catalogue in the foundry organization. There is described the value of correct defects classification and identification in the literature review and also some tools for defects classification are mentioned. Existing def…
This work presents review of the recent patents and applied researches in the field of ultrasonic processing of the semiconductor materials and devices. The ultrasound demonstrates selective and, simultaneously, complex character of the effect on semiconductors. In contrast to the thermal or light energy, uniformly ab…
Abstract To prepare new functional covalent architectures that are difficult to synthesize using conventional organic methods, we developed a strategy that employs metal–organic assemblies as precursors, which are then reduced and demetalated. The host–guest chemistry of the larger receptor thus prepared was studied u…
A combination of self-consistent field theory and density functional theory was used to examine the stable, 3-dimensional equilibrium morphologies formed by diblock copolymers with a tethered nanoparticle attached either between the two blocks or at the end of one of the blocks. Both neutral and interacting particles…
Electronic band structures of two novel semiconducting nitrides of the group‐IV elements of Th3P4‐type crystal structure, c‐M3N4, where MZr or Hf, is investigated using an element specific soft X‐ray spectroscopy for the first time. From the pairs of N 1s X‐ray absorption and N 2p → 1s resonant X‐ray emission spectra…
High resolution X-ray diffractometry (HR-XRD), Photoluminescence, Raman spectroscopy, and Transmission electron microscope measurements are reported for GaN deposited on a conventional Si(111) substrate and on the {111} facets etched on a Si(100) substrate. HR-XRD reciprocal space mappings showed that the GaN(0002) pl…
Zwitterionic nanocomposite gels (Zw‐NC gels) composed of a zwitterionic sulfobetaine copolymer and inorganic clay (hectorite) are synthesized through the in situ free‐radical copolymerization of N,N‐dimethyl(acrylamidopropyl)ammonium propanesulfonate (90 mol%) and N,N‐dimethylacrylamide (10 mol%) with exfoliated clay…
The synthesis of a poly (ethylene-co-vinyl alcohol) (EVOH)-based supramolecular polymer by graft functionalization of EVOH with ureidopyrimidinone groups (UPy) has been studied. The resulting polymer, designated as EVOH-U, has been studied from a thermo-reversibility point of view. Generally, UPy, itself, can be self-…
The electron transport properties of the cubic quantum dot, (PbS)32, are investigated. The stability of the quantum dot has been established by recent scanning tunneling microscope experiments [B. Kiran, A. K. Kandalam, R. Rallabandi, P. Koirala, X. Li, X. Tang, Y. Wang, H. Fairbrother, G. Gantefoer, and K. Bowen, J.…
We have measured OH densities by time-resolved broad-band absorption spectroscopy in a He–H2O–O2 dielectric barrier discharge, with the aim to investigate the effect of water and oxygen addition on OH production. The results are examined in the light of literature data, in particular model calculations of reactive oxy…
This investigation analyzes the dependency of minority charge carrier lifetime values at grain boundaries in multicrystalline silicon on the grain boundary type after P gettering and/or firing of SiNx:H layers deposited by plasma enhanced chemical vapor deposition. To get a broad statistics, a new method to determine…
We have performed extensive density matrix renormalization group (DMRG) studies of the Hubbard model on a honeycomb ladder. The band structure (with Hubbard $U=0$) exhibits an unusual quadratic band touching at half-filling, which is associated with a quantum Lifshitz transition from a band insulator to a metal. For o…
In this paper we report a combined calorimetric and inelastic neutron scattering (INS) study of hydrated γ-Al2O3 (γ-alumina) nanoparticles. These complementary techniques have enabled a comprehensive evaluation of the thermodynamic properties of this technological and industrially important metal oxide to be achieved.…
Reversible addition–fragmentation chain transfer (RAFT) dispersion polymerization was utilized to synthesize poly(methacrylic acid)- b -poly(butyl acrylate) (PMAA- b -PBA) amphiphilic block copolymer dispersions in methanol by using the PMAA homopolymer with dithiobenzoate end-group as macro-RAFT agent. And the PMAA m…
Integrated gas combined (power generation) cycle (IGCC) power plants show promise for environmentally benign power generation. In these plants coal and/or biomass are first gasified into syngas, which is then processed in a water gas shift (WGS) reactor to further enhance its hydrogen content for power generation. How…
Intestinal passive Mg(2+) absorption, which is vital for normal Mg(2+) homeostasis, has been shown to be regulated by luminal proton. We aimed to study the regulatory role of intestinal acid sensors in paracellular passive Mg(2+) transport. Omeprazole enhanced the expressions of acid-sensing ion channel 1a (ASIC1a), o…
In this study, native corn starch (NCS) was acetylated by a microwave‐assisted method using vinyl acetate as an acetylating agent and potassium carbonate as a catalyst. Acetylated corn starch (ACS) was characterized by Fourier‐transform infrared spectroscopy, SEM, and XRD. The optimum conditions of acetylation (i.e.,…
We have used high-energy x-ray scattering to map the strain fields around crack tips in fracture specimens of a bulk metallic glass under load at room temperature and below. From the measured strain fields we can calculate the components of the stress tensor as a function of position and determine the size and shape o…
Patterned hydrophobic Ni-P alloy films consisting of orderly and regular micro-nanoscale particles were fabricated through the synergistic effect of electrochemical deposition and chemical deposition. Ni-P alloy films were deposited for different times and characterized by scanning electron microscope (SEM). It was co…
In order to establish the effect of cut tobacco drying on the subsequent pyrolysis and combustion properties, an oven drying method was applied to the treatment of the cut tobacco samples in a temperature range from 70 to 170°C. Thermogravimetric analysis was used to study the weight loss behavior of the dried cut tob…