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。
ЗО́РИЧ-КОНДРА́ЦЬКА Квітка-Галина Богданівна – хоровий диригент, музично-громадська діячка, педагог. Дочка Я. Зорич. Державні нагороди Канади та Золотий хрест Об'єдн. бувших вояків-українців у Великій Британії. Закін. муз. факультет Торонт. університету . Відтоді викладає муз. пре... ⚠️ Цей запис містить лише бібліогра…
ЗЕМЛЕРО́БСТВА І ТВАРИ́ННИЦТВА ЗА́ХІДНОГО РЕГІО́НУ Інститут УААН – науково-дослідна установа, що вивчає проблеми землеробства і тваринництва західних районів України. Засн. 1956 у с. Оброшине Пустомитів. р-ну Львів. обл. на базі Інституту агробіології АН УРСР та Львів. н.-д. станц... ⚠️ Цей запис містить лише бібліогра…
ЗВА́РЮВАННЯ В КО́СМОСІ – процеси нероз'ємного з'єднання матеріалів в умовах космічного простору. З. в к. здійснюють у твердій і рідкій фазах, а також шляхом випаровування й конденсації речовин на твердофазну підкладку . Відмінності З. в к. пов'язані з особливостями косміч. середо... ⚠️ Цей запис містить лише бібліогра…
In the present work Al2O3-Cact binary derivatives were synthesized by sol-gel method. Thermal resistance of thesederivatives is 70 °C – 200 °C higher (depending on activated carbon type) compared to pure carbons. For the analysis ofthese composites X-ray diffraction (XRD) and infrared spectroscopy (IR) were used.The a…
The change of tanning parameters reflects on leather chemical and physical properties. The standardizeddetermination methods of more important for customers leather indexes do not allow absolutely clear to conclude aboutsuitability of developed tanning method for leather processing. Due to this DSC analysis and IR spe…
In this study the change of air permeability and mass loss of woven fabrics with different structure fancy yarns after abrasion test is discussed. One fancy yarn and four cotton yarns in the weft for investigated fabrics in sateen 5/3 weave had been used. The fancy yarns structure was different as well; i. e. fancy ya…
Power plant steel 12X1MФ, taken from the as-installed condition through to 270000 h service-exposed and accelerated aged in laboratory conditions, have been characterized with optical microscopy and X-ray diffraction. Microscopy showed that during heat treatment a number of microstructural changes occurs. Initially fo…
Polycrystalline samples of lead-free (1–x)(Bi1/2Na1/2)TiO3-xWO3 with (0 ≤ x ≤ 0.10) were prepared using a high-temperature solid-state reaction method. X-ray diffraction analyses indicated the formation of single-phase orthorhombic structure. It is seen that addition of WO3 to (Bi1/2Na1/2)TiO3 changes the crystal symm…
Wool fibre has it native colour, but it changes during storage, scouring, dyeing, bleaching, decatizing and other finishing processes. The aim of this work was to investigate the influence of physical factors such as temperature and humidity on the colour of wool fibres which differed in their initial colours. The dat…
The relation between the kind of inoculants, the castings size and matrix structure of ductile iron was investigated.Inoculation was performed by using 4 different inoculants. Ductile iron was cast in test bars with diameters from 3 mmto 50 mm. The study of the microstructure showed that the effect of the kind of inoc…
In the present research ion energy effects on piezoresistive properties of hydrogenated diamond like carbon (DLC) filmsdeposited by hydrocarbon ion beam deposition and radio frequency plasma enhanced chemical vapor deposition(PECVD) were studied. Comparative analysis of the influence of silicon oxide and silicon dopin…
International audience
So far we have considered that resistances, leakage and magnetization inductances are invariable with load. In reality, the magnetization current Im varies only slightly from no-load to full load (from zero slip to rated slip Sn ≈ 0.01 – 0.06), so the magnetization inductance L1m varies little in such conditions. Howe…
Chapter Overview This chapter starts by reviewing a number of shape measures (or features) that are usually adopted for shape characterization and classification and proceeds by covering several complexity descriptors, including the fractal dimension and curvature-based measures. The chapter concludes by presenting Fo…
Most small power (generally below 2 kW) induction machines have to operate with single-phase a.c. power supplies that are readily available in homes, and remote rural areas. When power electronics converters are used three phase a.c. output is produced and thus three phase induction motors may still be used. However,…
The effects discussed in this chapter are twofold in nature. One group (multiple scattering, time reversal, and air-coupled ultrasonics) are part of traditional ultrasonics, but recent advances have given them topical interest. The other group (picosecond ultrasonics and resonant ultrasound spectroscopy) are relativel…
Cavitation, the rupture of liquids and its associated effects, is a much more general phenomenon than that caused by the propagation of an intense ultrasonic wave in a liquid. It can be engendered hydrodynamically (ship’s propellers, turbines, etc.), by absorption of a laser beam, or by the passage of elementary parti…
Poster (prix du meilleur poster)
International audience
We investigated the plasmonic modes in a two-dimensional quasicrystalline array of metal nanoparticles. The polarization of the modes is in the array plane. A simplified eigen-decomposition method is presented with the help of rotational symmetry. Two kinds of anti-phase ring modes with radial and tangential polarizat…