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。
This paper presents a specific current profile to control recently proposed pseudo-sinusoidal switched reluctance motor (PSSRM), achieving a ripple-free output torque and reducing the dc input current pulsation. To generate a constant output torque, the proposed current profile is derived based on the inductance profi…
The formation of the amorphous-nanocrystalline structure during the crystallization of metallic glasses of the Al-Ni-Y system has been investigated by X-ray diffractometry, differential scanning calorimetry, and transmission electron microscopy. It has been shown that the crystallization onset temperature depends on t…
This paper presents a novel method of modeling SRM including mutual coupling effect based on Finite Element Analysis (FEA). Once the machine geometry and design is completed in FEA, it is required to analyze the performance of the machine at different operating conditions with different control methods. Designing cont…
Many superconducting materials are composed of weakly coupled conducting layers. Such a layered structure has a very strong influence on the properties of vortex matter in a magnetic field. This review focuses on the properties of the Josephson vortex lattice generated by the magnetic field applied in the direction of…
Abstract Azulene derivatives that have an azathiacrown ether moiety were synthesized by using a modification of the method described by Vögtle and co‐workers. These compounds are highly selective for detecting Ag+ ions, which is demonstrated visually by a color change from orange to violet. Structural studies of the A…
The temperature dependence of sodium ion diffusion coefficient ( D ) of Na x CoO 2 is extensively investigated in the temperature range of 303≤ T ≤349 K using electrochemical impedance spectroscopy. The magnitude of D is found to be (0.7–1.9)×10 -11 cm 2 /s (0.54≤ x ≤0.85) at 303 K, which is comparable to that of LiCo…
Nano-formulation of poorly water-soluble drugs has been developed to enhance drug dissolution. In this review, we introduce nano-milling technology described in recently published papers. Factors affecting the size of drug crystals are compared based on the preparation methods and drug and excipient types. A top-down…
Phosphorous slag and fly ash were used as raw materials for the preparation of ready-mixed mortar, and a series of technological parameters, such as phosphorus slag content, fly ash content, and chemical activators were investigated based on the compressive strength and setting time of specimens in this paper and the…
The experimental results are presented for a low speed flux focusing magnetic gear utilizing ferrite magnets. The performance of this ferrite magnetic gear is compared with a hybrid magnet magnetic gear with NdFeB magnets on the inner rotor and ferrite magnets on the outer rotor. The peak torque and efficiency is meas…
Rotor eccentricity in permanent magnet (PM) motors produces a voltage imbalance between parallel circuits that then creates a circulating current. This circulating current causes conduction loss, which is one of the stray losses in motors. The conduction losses of circulating currents need to be reduced in order to ma…
A heterogeneous model of gasless combustion of binary disperse systems is proposed. The model combines the description of microscale processes of interphase interaction in the cell of the mixture with the macroscale description, which allows physicochemical transformations to be described on the basis of the continuum…
This paper investigates the influence of d- and q-axis current components on the static demagnetization behavior of permanent magnet (PM) synchronous machines. Finite element (FE) analysis is used to analyze and simulate the behavior of an interior permanent magnet (IPM) machine. The flux density is recorded at severa…
The crystal structure of Cu 2 ZnSnSe 4 (CZTSe) has been investigated using two types of structure models known as stannite and kesterite. The single crystal X-ray diffraction study has been performed for two CZTSe single crystals samples obtained by the Bridgman (I) and chemical transport reaction (II) methods. The be…
Choice of an appropriate form of shielding distance in the estimation of collision integrals under screened coulomb potential for two-temperature non-equilibrium plasma is addressed. Simple expressions for collision integrals for charged-charged interactions are derived. It is shown that while some of the formalisms u…
The structure of specimens of Ni-Cu-Ti-Zr alloys with an amorphous phase has been examined by X-ray diffraction, as well as by transmission and scanning electron microscopy. Mechanical characteristics of the alloys have been determined using universal testing machines. Transformation-induced plasticity has been found…
The low-percentage Ni/Al 2 O 3 catalysts with active metal contents of 0.0002–0.1 wt % were prepared using the laser electrodispersion (LED) method and by means of supporting from a colloidal dispersion (CD). Their composition and physicochemical properties were determined by atomic absorption spectrometry, transmissi…
With the evolution of the "omics" era, our molecular understanding of cancer has exponentially increased, leading to the development of the concept of personalized medicine. Nanoparticle technology has emerged as a way to combine cancer specific targeting with multifunctionality, such as imaging and therapy, leading t…
Abstract In the past decade, many studies have been conducted to determine the health effects induced by exposure to engineered nanomaterials (NMs). Specifically for exposure via inhalation, numerous in vitro and animal in vivo inhalation toxicity studies on several types of NMs have been published. However, these res…
Bromelain is a mixture of proteolytic enzymes present in all tissues of the pineapple (Ananas comosus Merr.), and it is known for its clinical therapeutic applications, food processing, and as a dietary supplement. The use of pineapple waste for bromelain extraction is interesting from both an environmental and a comm…
A convenient sonochemical process for the preparation of silver selenide (Ag 2 Se) nanoparticles by using different complexing agents [NH 3 , citric acid, potassium thiocyanate (KSCN)] and hydrazine as reductant agent is developed. It was found that pure Ag 2 Se nanoparticles were prepared in the presence of KSCN afte…