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Polish Journal of Ecology
EN Variation of foliar stable Carbon Isotope Discrimination (CID [Delta] [per mil]) and nutrient contents of Artemisia ordosica (Krasch) (semi-shrub species) and Caragana korshinskii (Kom.) (shrub species) were studied at the south-eastern margin of the Tengger Desert, China. Foliar CID [Delta], total [...]
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Archives of Metallurgy and Materials
EN Alumina rich fly ash (ARFA) has been regarded as the alternative to bauxite in China. Hydrochloric acid process could be favored for alumina extraction, necessitating calcination of aluminum chloride hexahydate (ACH). In this work, the TGA/DSC results of ACH were used to suggest calcination procedur[...]
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Przegląd Elektrotechniczny
2012 R. 88, nr 9b 212-213
PL W artykule analizuje się czynniki wpływające na częstość napraw turbin gazowych elektrowni.
EN It is significant for safe economic operation of gas turbine power plant to rationally arrange repair cycle of gas turbine. This paper firstly sums up key factors influencing gas turbine repair cycle according to operation features of gas turbine, and set gas turbine equivalent operation hour equati[...]
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Fibres & Textiles in Eastern Europe
2015 Nr 6 (114) 37--40
PL Włókna łykowe odgrywają istotną rolę ponieważ są biodegradowalne i przyjazne środowisku. Badano naturalne celulozowe włókna ekstrahowane z łodyg bawełny poprzez odgumowywanie. Na podstawie właściwości chemicznych łodygę bawełny dzielono na trzy części przed przeprowadzeniem ekstrakcji. Doświadczalni[...]
EN Bast fibres are important because they have biodegradable and eco-friendly characteristics. In this paper, natural cellulose fibre extracted from cotton stalk by degumming was investigated. On the basis on the chemical propertiess of cotton stalk bark, a cotton stalk was divided into three sections [...]
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Archives of Acoustics
EN The Gaussian mixture model (GMM) method is popular and efficient for voice conversion (VC), but it is often subject to overfitting. In this paper, the principal component regression (PCR) method is adopted for the spectral mapping between source speech and target speech, and the numbers of principal[...]
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Przegląd Elektrotechniczny
2003 R. 79, nr 10 753-756
PL Artykuł przedstawia porównanie dwu metod symulacji wyładowania koronowego występującego pomiędzy ostrą hiperboliczną igłą a płaskim gruntem. Jedna bazuje na metodzie elementów skończonych (FEM) analizy pola. Druga wykorzystuje hybrydowe połączenie metody elementów brzegowych (BEM) i skończonych (FEM[...]
EN Two versions of a numerical algorithm for simulating the electric corona discharge between a sharp hyperbolic needle and ground plane are compared in this paper. One is based on the Finite Element Method for the electric field distribution and the Method of Characteristics for the charge transport e[...]
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Przegląd Elektrotechniczny
PL W artykule przedstawiono metodę analizy emisji głosu pod kątem rozpoznawania emocji. Rozwiązanie bazuje na analizie dyskryminacyjnej maksymalnego marginesu GMMDA.
EN A novel speech emotion recognition method based on the generalized maximum margin discriminant analysis (GMMDA) method is proposed in this paper. GMMDA is a multi-class extension of our proposed two-class dimensionality reduction method based on maximum margin discriminant analysis (MMDA), which uti[...]
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Archives of Acoustics
EN A novel VC (voice conversion) method based on hybrid SVR (support vector regression) and GMM (Gaussian mixture model) is presented in the paper, the mapping abilities of SVR and GMM are exploited to map the spectral features of the source speaker to those of target ones. A new strategy of F0 transfo[...]
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Zeszyty Naukowe Politechniki Świętokrzyskiej. Mechanika
1999 Z. 67 173--183
EN Both the fluctuating static pressures on the tube wall and the differential pressure fluctuation were measured to obtain the objective identification of steam-water two-phase flow regimes in a vertical upward tube of 20.0-mm interior diameter. The test pressures were 1.0MPa, 2.0MPa and 3.0MPa and th[...]
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Archives of Acoustics
2018 Vol. 43, No. 3 531--536
EN A questionnaire survey was conducted in the residential quarters of Guangzhou, for which 582 elderly people over 60 years old were randomly recruited. The hearing impairment of the participants was evaluated using the Hearing Handicap Inventory for the Elderly (HHIE). The participants’ subjective re[...]
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Metrology and Measurement Systems
2013 Vol. 20, nr 2 275--286
EN In the external target experiment for heavy ion collisions in the HIRFL-CSR, Multi-Wire Drift Chambers are used to measure the drift time of charged particles to obtain the track information. This 128-channel high precision time measurement module is designed to perform the time digitization. The da[...]
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Acta Chromatographica
EN A high-performance liquid chromatographic (HPLC) method has been developed for separation and quantitative analysis of flavonoid aglycones in Rhododendron anthopogonosides Maxim. Flavonoids in their bound forms were hydrolyzed with acid before HPLC analysis. Analytical samples were pretreated by sol[...]
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Acta Chromatographica
2013 Vol. 25, no. 2 377--392
EN A simple hydrolysis method has been developed for determination of phenylethanoid glycosides in Lamiophlomis rotata (L.R.). Different kinds of phenylethanoid glycosides were hydrolyzed in hydrochloric acid solution to produce corresponding phenethyl alcohols and cinnamic acids, mainly containing hyd[...]
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Archives of Acoustics
2013 Vol. 38, No. 4 457--463
EN Speaker‘s emotional states are recognized from speech signal with Additive white Gaussian noise (AWGN). The influence of white noise on a typical emotion recogniztion system is studied. The emotion classifier is implemented with Gaussian mixture model (GMM). A Chinese speech emotion database is used[...]
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Opto - Electronics Review
EN Based on appropriate combination of different band-gap InGaAsP, a new edge-coupled two-terminal double heterojunction phototransistor (ECTT-DHPT) was designed and fabricated, which is double heterojunction, free-aluminium, and works under uni-travelling-carrier mode and optically gradual coupling mo[...]
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Acta Chromatographica
2015 Vol. 27, no. 2 331--353
EN Epimedium pubescens Maxim. and Epimedium koreanum Nakai. are two common and confused species of Herba Epimedii in Chinese Pharmacopoeia 2010 edition. Different species and growing conditions lead to chemical differences between the two species which may result in the improper clinical usage. In this[...]
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Polish Maritime Research
2018 S 2 98--106
EN The health condition of rolling bearing can directly influence to the efficiency and lifecycle of rotating machinery, thus monitoring and diagnosing the faults of rolling bearing is of great importance. Unfortunately, vibration signals of rolling bearing are usually overwhelmed by external noise, so[...]
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Archives of Mining Sciences
2015 Vol. 60, no. 4 1041--1052
PL Podziemne wgłębienia i pustki stanowią poważne zagrożenie dla budowli oraz dla działalności górniczej; dlatego też podstawowym zagadnieniem jest ich dokładna lokalizacja i określenie wymiarów. Jest to niezbędne dla planowania prac geotechnicznych i wydobywczych. Badania geofizyczne są alternatywną m[...]
EN The subterranean cavities are seriously threatened to construction and mining safety, and it’s important to obtain the exact localization and dimensions of subterranean cavities for the planning of geotechnical and mining activities. Geophysical investigation is an alternative method for cavity dete[...]
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Przegląd Elektrotechniczny
2013 R. 89, nr 1b 151--154
PL Do wytworzenia czarnego krzemu (BS) na podłożu typu p-Si(100) zastosowano prosty sposób teksturowania powierzchni krzemowej metodą chemicznej akwaforty na mokro z zastosowaniem, jako katalizatora, nanocząstek złota (Au). Podłoże staje się jednolicie czarne po 6 min, osiągając współczynnik odbicia < [...]
EN A simple process of texturing silicon (Si) surfaces using gold (Au)-catalyzed wet chemical etching was used to form black Si (BS) on a (100) p-type substrate. The surface became uniformly black after 6 min, with a resulting reflectivity of < 2% over the 400 nm to 1100 nm wavelength range. Large area[...]
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