Materials Literature
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An effective grating model, which generalizes effective-medium theory to the case of resonance domain surface-relief gratings, is presented. In addition to the zero order, it takes into account the first diffraction order, which obeys the Bragg condition. Modeling the surface-relief grating as an effective grating wit…
Control of crystalline orientation and consequent enhancement of magnetic properties are important for decreasing core loss of non-oriented silicon steel as well as grain-oriented silicon steel. Through the development of special process techniques to produce clean refined steel, it is now possible to use any element…
Abstract A series of unsymmetrical thiophene diols has been prepared in two steps from thiophene in 16–46 % yields. The unsymmetrical thiophene diols containing functionalised aryl groups were then used as key synthons for the synthesis of a series of monofunctionalised 21‐thia (N 3 S), 21,23‐dithia (N 2 S 2 ) and 21‐…
This paper examines the influence of various parameters such as delivery speed, nozzle pressures, and yarn count on the properties of vortex yarns produced using a Murata vortex spinning system. The results indicated that the delivery speed, nozzle pressure, and yarn count are all significant parameters for yarn evenn…
This paper attempts to establish a correlation of the visual images of corona obtained from a camera with discharge magnitude measured with conventional partial discharge equipment. A linear relationship is shown between the transformed image parameters and the discharge magnitude, thereby providing a means for quanti…
The trend toward physical modelling of larger prototypes triggers a move towards expansion of the current capability of dynamic centrifuge tests. In this paper a method based on the concept of two-stage scaling is proposed that allows expanded use of the currently available facilities. In the first stage a prototype i…
Abstract A dinuclear Ni II complex, [Ni 2 ( L ) 2 (H 2 O)(NCS) 2 ] · 3H 2 O ( 1 ) in which the metal atoms are bridged by one water molecule and two μ 2 ‐phenolate ions, and a thiocyanato‐bridged dimeric Cu II complex, [Cu( L )NCS] 2 ( 2 ) [ L = tridentate Schiff‐base ligand, N ‐(3‐aminopropyl)salicylaldimine, derived…
Abstract. Sodic and saline–sodic soils are characterized by the occurrence of sodium (Na + ) at levels that result in poor physical properties and fertility problems, adversely affecting the growth and yield of most crops. These soils can be brought back to a highly productive state by providing a soluble source of ca…
The technical viability of preparing a Cu-Al-Nb shape memory alloy by high energy ball milling in a planetary mill has been evaluated. The alloy Cu-13Al-2Nb (wt. (%)) was prepared by mixing pure elemental powders. A ball-to-powder weight ratio of 6:1 and rotation rate of 150 rpm in argon atmosphere were the main proce…
We describe director distortions in the nematic liquid crystal (LC) caused by a spherical particle with tangential surface orientation of the director and show that light transmittance through the distorted region is a steep function of the particle's size. The effect allows us to propose a real-time microbial sensor…
Chitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6). The carboxymethylation of chitosan was confirmed by ¹H NMR and 13C NMR spectroscopy. The carboxymethylchitosans had avera…
The φ10~25 mm reinforced bars of Nb microalloying 400 MPa Ⅲ Grade steel - 0.17~0.25C,1.20~1.45Mn,0.02～0.04Nb have been developed by 40 t EBT are furnace- 40 t LF- 150 mm×150 mm billet concasting process. The mechanical properties of reinforced bars were σs420~490 MPa,σb590~680 MPa,δ524%～30%,and the yield strength decr…
With using 30% hot metal charging while the temperature of metal being no less than 1300 ℃,and optimizing power supply schedule and foam slag process,the steelmaking power consumption of a 65 t electric arc furnace at Shiheng Special Steel decreased by 95 kWh/t, the Oxygen consumption decreased by 2.8 m³/t and the tap…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSalicylaldimine−Aluminum Complexes for the Facile and Efficient Ring-Opening Polymerization of ε-CaprolactoneNobuyoshi Nomura, Takuji Aoyama, Ryohei Ishii, and Tadao KondoView Author Information Laboratory of Polymer Chemistry, Grad…
A new facile procedure to prepare three-dimensionally ordered macroporous (3DOM) materials of perovskite-type La 1 - x Sr x FeO 3 ( x = 0−0.4) mixed metal oxides by using colloidal crystal templating method is presented. This method can ensure the desired metal ratio throughout the preparation procedure, and the desir…
In recent years the fields of medicine and biology assist to an ever-growing innovation related to the development of nanotechnologies. In the pharmaceutical domain, for example, liposomes, polymer based micro and nanoparticles have been subjects of intense research and development during the last three decades. In th…
The interlayer configuration proposed by Moore and Reynolds ( X-ray Diffraction and the Identification and Analysis of Clay Minerals; Oxford University Press: New York, 1997) and commonly used to reproduce the 00 l reflections of bi-hydrated smectite is shown to be inconsistent with experimental X-ray diffraction data…
Pitting corrosion and structure characteristics of carbon dioxide (CO2) corrosion products on N80, 1Cr, and 4Cr steel were studied. The results indicated that Cr-containing steels can suppress pitting corrosion effectively. While the Cr content in the matrix reached 4%, no pitting corrosion appeared on 4Cr steel. Cr e…
Density functional calculations of the electronic structure are used to elucidate the bonding of . It is found that this material is best described as ionic, and in particular that the units are not reasonably viewed as substantially covalent.
The synthesis and characterization of a series of primary and secondary alcohol adducts of 1,3-dimesitylimidazolin-2-ylidene is described. These adducts are stable as solids at room temperature, but readily release alcohol and the free carbene in solution. These alcohol adducts function as excellent single-component c…