Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Zheng, H." wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 36
Tytuł:
Analiza dostępności konstelacji satelitów
Availability analysis of satellite constellation
Autorzy:
Zheng, H.
Ren, L.
Powiązania:
https://bibliotekanauki.pl/articles/301053.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
konstelacje satelitów
analiza dostępności
analiza przestojów
satellite constellations
availability analysis
outage analysis
Opis:
This paper firstly analyzes the concept of availability of satellite constellation. Then the method of constellation availability analysis is proposed based on Markov chain model, outage analysis, as well as MTBF and MTTR of satellite constellations. Finally, an illustrative example is presented to demonstrate the method.
Artykuł w pierwszej kolejności analizuje pojęcie dostępności konstelacji satelitów. Następnie proponuje metodę analizy dostępności konstelacji opartą na modelu łańcuchów Markowa, analizie przestojów, oraz MTBF i MTTR konstelacji satelitów. Metodę zilustrowano przykładem.
Źródło:
Eksploatacja i Niezawodność; 2010, 2; 48-50
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of SNPs based on DNA specific-locus amplified fragment sequencing in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook)
Autorzy:
Su, Y.
Hu, D.
Zheng, H.
Powiązania:
https://bibliotekanauki.pl/articles/41243.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
detection
single nucleotide polymorphism
DNA specific-locus amplified fragment sequencing
fir
Chinese fir
Cunninghamia lanceolata
genotyping
Opis:
Compared to angiosperms, conifers represent more complex genomes with larger giga-genome size. To detect large-scale single nucleotide polymorphisms (SNPs), whole genome sequencing of a conifer population is still unaffordable. In this work, we report the use of DNA specific-locus amplified fragment sequencing (SLAF-seq) for large-scale SNP detection in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook), an ecological and economic important conifer in China. SLAF libraries of 18 parent clones of a Chinese fir 2.5 generation seed orchard were sequenced and a total of 117,924 SLAFs were developed. We detected 147,376 SNPs from these SLAFs; 146,231 of them represented simple nucleotide change in A/G, C/T, A/C, A/T, C/G or G/T. The most frequent SNPs occurred in C/T (34.3%), while the majority of SNPs (68.2%) belonged to transition events (A/G and C/T). Notably, all the sequenced samples had high portion (78.2–80.9%) of common SNPs indicating that the Chinese fir genomes tended to change its nucleotides at common loci. 48,406 informative SNPs were then successfully utilized to genotype the tested samples (n = 18) followed by a phylogenetic tree to clarify their genetic relationship. Furthermore, a set of very high linkage disequilibrium (0.51–1.00) were identified from these informative SNPs. In brief, our work demonstrated that SLAF-seq is an alternative and cost-effectively high-throughput approach for large-scale SNP exploitation in Chinese fir. While the obtained SNPs offer useful marker resource for further genetic and genomic studies and will be helpful for Chinese fir breeding programs.
Źródło:
Dendrobiology; 2016, 76
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genotypic variation of Cunninghamia lanceolata revealed by phenotypic traits and SRAP markers
Autorzy:
Zheng, H.
Duan, H.
Hu, D.
Li, Y.
Hao, Y.
Powiązania:
https://bibliotekanauki.pl/articles/41212.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Opis:
The success of a tree breeding program largely depended on the available genetic variability of the germplasms. Our present study aimed to assess the phenotypic variation and DNA variability using sequence-related amplified polymorphism (SRAP) markers among 50 Cunninghamia lanceolata (Chinese fir) genotypes. Extensive phenotypic variations (p < 0.05 or 0.01) were found for all the growth and wood property traits (height, diameter at breast height, stem volume, and wood basic density, hygroscopicity, heart-wood ratio, tracheid length, tracheid diameter and tracheid length-diameter ratio) with coefficients of variation spanning from 6.8 to 31.3%. At the DNA level, thirty-five SRAP primer combinations produced 498 bands with 89.4% polymorphism across genotypes; moreover, the Nei’s gene diversity was detected to be ranged between 0.204 and 0.373 (mean = 0.279), while the Shannon’s Information Index stretched from 0.324 to 0.555 with an average value of 0.427. Significance (p < 0.01) of the variability of SRAP polymorphism among genotypes was further demonstrated by AMOVA. These results indicated a relatively high level of genetic diversity in genotypes. The SRAP’ dendrogram additionally revealed that these genotypes could be split into 7 clusters with higher discriminating capacity over that of phenotype. Notably, a total of 99 statistically significant (p < 0.05) marker-trait associations related to the growth and wood property traits were identified. These marker-trait associations corresponded to 77 different SRAP markers with R2 (percentage of the phenotypic variation explained by marker) ranging from 8.3 to 26.4%.
Źródło:
Dendrobiology; 2015, 74
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extraction of rubidium and cesium from brine solutions using a room temperature ionic liquid system containing 18-crown-6
Autorzy:
Huang, D.
Zheng, H.
Liu, Z.
Bao, A.
Li, B.
Powiązania:
https://bibliotekanauki.pl/articles/779994.pdf
Data publikacji:
2018
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Rubidium
Cesium
Ionic liquid
18-crown-6
Solvent extraction
Opis:
Application of 1-butyl-3-metyhlimidazaolium hexafl uorophosphate ([C4mim][PF6 ]), in the extraction of rubidium and cesium from brine solutions using 1,4,7,10,13,16-hexaoxacyclooctadecane (18C6) as extractant was investigated. Parameters that affect the extraction including pH of aqueous phase, equilibration time, dosage of the ionic liquid, phase ratio, concentration of 18C6 were studied. Under the optimal conditions, the single extraction effi ciency of rubidium ions and cesium ions were up 84.11% and 94.99%, respectively. The stripping of alkali metal ions from the loaded organic phase with different stripping agents and concentrations were also investigated. The initial value of the K/Cs and K/Rb ratios were 93.0 and 104.3, respectively, which have dropped 91.21% and 88.01%, respectively, after the extraction and stripping experiments. It was taken a big step in the separation and enrichment of cesium (rubidium) ion and potassium ion. The extraction mechanism was revealed most likely to be a cation exchange mode in this system.
Źródło:
Polish Journal of Chemical Technology; 2018, 20, 2; 40-46
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Global transcriptome analysis reveals genes associated with seedling advance growth traits in a selfed family of Chinese fir (Cunninghamia lanceolata)
Autorzy:
Deng, H.
Hu, D.
Wei, R.
Yan, S.
Wang, R.
Zheng, H.
Powiązania:
https://bibliotekanauki.pl/articles/2130183.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Chinese fir
selfing
RNA-Seq
growth trait
hub gene
Opis:
Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) is a major timber conifer species in southern China. In this study, we aimed to capture the rarely advanced phenomenon for selfing in this species and illustrated the underlying molecular mechanism, especially the hub gene-regulated networks and pathways, by global transcriptome analysis assays (RNA-Seq). Self-pollination trials revealed a wide variation of selfing effects among parents. Parent cx569 produced a selfed family with the best growth performance at the seedling stage. The growth-based extremely advanced (AD) (n=3) and depressed (DE) variants (n=3; different types) were then subjected to comparative RNA-Seq. The transcriptome data revealed more than 5000 differentially expressed genes (DEGs) for each comparison group (AD versus DE). Weighted gene co-expression network analysis (WGCNA) further identified more than 80 important DEGs that were significantly associated with growth traits in each comparison group. A subsequent enrichment analysis showed that the identified DEGs belonged to six main types, including xylem metabolism-related, sugar and energy metabolism-related, plant hormone signal transduction-related, stress response-related, cytochrome-related, and transcription factor genes. Ten hub genes represented by the ERF071, MYB-relate 305, WRKY6, WRKY31, PER3, LAC4, CESA8, CESA9, GID1, and PR1 genes were co-identified between AD and DE variants. These genes exhibited rather different expression patterns between AD and DE variants, especially of the transcription factor ERF071 gene that presented a low transcript level in the AD seedlings with only 4.45% activity compared to DE's. While, the plant hormone signal transduction GID1 gene was significantly upregulated in AD by about 20-fold when compared to DE's, and fold change of the lignin biosynthesis-related PER3, CESA9 and LAC4 gene expression parallel reached to 10–15 times in an upregulation pattern in AD seedlings. The set of hub gene-linked interaction networks and pathways revealed in this study may be responsible for the rarely advanced phenomenon for selfing at the seedling stage in Chinese fir.
Źródło:
Dendrobiology; 2022, 87; 27-46
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conservative finite volume element schemes for the complex modified Korteweg–de Vries equation
Autorzy:
Yan, J. L.
Zheng, L. H.
Powiązania:
https://bibliotekanauki.pl/articles/330164.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
mass
energy
momentum
finite volume method
Korteweg–de Vries equation
pęd
metoda objętości skończonych
równanie Kortewega-de Vries
Opis:
The aim of this paper is to build and validate a class of energy-preserving schemes for simulating a complex modified Korteweg–de Vries equation. The method is based on a combination of a discrete variational derivative method in time and finite volume element approximation in space. The resulting scheme is accurate, robust and energy-preserving. In addition, for comparison, we also develop a momentum-preserving finite volume element scheme and an implicit midpoint finite volume element scheme. Finally, a complete numerical study is developed to investigate the accuracy, conservation properties and long time behaviors of the energy-preserving scheme, in comparison with the momentum-preserving scheme and the implicit midpoint scheme, for the complex modified Korteweg–de Vries equation.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 3; 515-525
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving spodumene flotation using a mixed cationic and anionic collector
Autorzy:
Wang, Y.
Zhu, G.
Yu, F.
Lu, D.
Wang, L.
Zhao, Y.
Zheng, H.
Powiązania:
https://bibliotekanauki.pl/articles/109883.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
spodumene
lithium
silicates
flotation
anionic surfactant
cationic surfactant
Opis:
Lithium, a rare-earth element, has been in increasing demand. Spodumene flotation is an important and challenging step for lithium extraction and production from lithium ore. In the present work, flotation tests for three pure minerals (i.e., spodumene, quartz and feldspar) and a real spodumene ore were carried out at laboratory scale. The results showed that YOA, a mixture of oleic acid and dodecylamine with the molar ration of 10:1, could be used as collector to produce a spodumene concentrate with grade of 5.59% Li2O from the feed ore with grade of 1.48% Li2O where 85.24% of Li2O was recovered to the concentrate. The measured zeta potential, contact angle and adsorption capacity indicated that YOA was preferentially adsorbed on spodumene instead of on quartz or feldspar, with the spodumene surface being more hydrophobic than that of feldspar or quartz. The adsorption energies of YOA on spodumene were calculated and the results provided insights into the superior flotation performance obtained in the present work.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 2; 567-577
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure, Mechanical and Detonation Properties of Elastomeric Micro/Ultrafine-rubber Modified TNT-based Molten Energetic Composites
Autorzy:
Ma, Q.
Wang, P.-S.
Luo, G.
Wen, M.-P.
Gao, D.-Y.
Zheng, B.-H.
Shu, Y.-J.
Powiązania:
https://bibliotekanauki.pl/articles/358122.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
micro and ultrafine rubber
2,4,6-trinitrotoluene
molten energetic composites
mechanical properties
detonation performance
Opis:
Elastomeric micro- and ultrafine-rubber are first considered as binders in melt-cast explosives for improving the mechanical properties. Acrylonitrile-butadiene rubber (NBR), in ultrafine fully vulcanized form (UF-NBR), carboxylated acrylonitrile-butadiene rubber (CNBR), in ultrafine fully vulcanized form (UF-CNBR), styrene-butadiene rubber (SBR), in ultrafine fully vulcanized form (UF-SBR), carboxylated styrene-butadiene rubber (CSBR), in ultrafine fully vulcanized form (UF-CSBR), acrylic rubber (ACM), in ultrafine fully vulcanized form (UF-ACM), room temperature vulcanized silicone rubber (RTV), in ultrafine fully vulcanized form (UF-RTV) and polytetrafluoroethene (PTFE) in micro-rubber form (PTFE-M) were utilized for modifying 2,4,6-trinitrotoluene (TNT) based melt-cast explosives. Based on their dispersity in TNT and RDX slurry, only UF-NBR, UF-CNBR and PTFE-M can be used. In the modification experiment, their influence on the mechanical and detonation performance of the matrixes were studied, as well as the impact sensitivity. Compared with PTFE-M and UF-CNBR, UF-NBR improved the tensile and compressive strength of the original formulation CYCLOTOL-65/35. The toughening mechanism was also explained through interfacial interactions and fracture energy analysis. The predicted detonation properties of the modified formulations (detonation pressure variations from 26 to 28 GPa, detonation velocity variations from 7900 to 8100 m/s) are at the same energy level as CYCLOTOL-65/35. In addition, the drop hammer impact testing results confirm that the formulation containing UF-NBR is more sensitive than the one with UF-CNBR, with the same amount of additive.
Źródło:
Central European Journal of Energetic Materials; 2015, 12, 4; 723-743
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of matrine and oxymatrine from Sophora flavescens extract through cation exchange resin coupled with macroporous absorption resin
Autorzy:
Chen, H.
Luo, S.
Zheng, X.
Fan, H.
Powiązania:
https://bibliotekanauki.pl/articles/778382.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
Sophora flavescens
BS-65 macroporous resin
001×732 cation exchange resin
separation
alkaloids
Opis:
A simple method for separation of matrine and oxymatrine from Sophora flavescens was developed with cation exchange resin coupled with macroporous resin. Based on the adsorption characteristics of matrine and oxymatrine, 001×732 cation exchange resin was used to absorb target alkaloids for removing most of the foreign matter, while BS-65 macroporous resin was chosen to purify these alkaloids. The result showed that the equilibrium adsorption data of matrine and oxymatrine on 001×732 resin and BS-65 resin at 30°C was fitted to Langmuir isotherm and Freundlich isotherm, respectively. The contents of matrine and oxymatrine were increased from 0.73% and 2.2% in the crude extract of the root of Sophora flavescens to 67.2% and 66.8% in the final eluent products with the recoveries of 90.3% and 86.9%, respectively.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 2; 31-39
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Ultrasonic Vibration on the Solidification of 35CrMo Steel
Autorzy:
Zheng-Bing, X.
Yuan-Chun, H.
Powiązania:
https://bibliotekanauki.pl/articles/352200.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultrasonic vibration
solidification
segregation
defects
Opis:
The effect of ultrasonic vibration on the microstructure, elimination of casting defects and distribution of alloyed elements at macro-scale during solidification of 35CrMo steel has been investigated. Results show that ultrasonic treatment has a significant effect on the grain refinement, especially the fragmentation of the secondary dendritic arms of the studied steel. Density of the casting defects decreases and the alloyed elements are seen more even distribution at macro-scale with the introduction of ultrasonic vibration. Meanwhile, the ultrasonic vibration works more efficiently in the longitudinal direction than in the radial, and its efficiency declines with the distance from the radiator increasing.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 293-298
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An On-Line Method for Thermal Diffusivity Detection of Thin Films Using Infrared Video
Autorzy:
Dong, H.
Zheng, B.
Chen, F.
Powiązania:
https://bibliotekanauki.pl/articles/220732.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermal diffusivity
on-line detection
off-centre error
infrared video
thin films
Opis:
A novel method for thermal diffusivity evolution of thin-film materials with pulsed Gaussian beam and infrared video is reported. Compared with common pulse methods performed in specialized labs, the proposed method implements a rapid on-line measurement without producing the off-centre detection error. Through mathematical deduction of the original heat conduction model, it is discovered that the area s, which is encircled by the maximum temperature curve rTMAX(θ), increases linearly over elapsed time. The thermal diffusivity is acquired from the growth rate of the area s. In this study, the off-centre detection error is avoided by performing the distance regularized level set evolution formulation. The area s was extracted from the binary images of temperature variation rate, without inducing errors from determination of the heat source centre. Thermal diffusivities of three materials, 304 stainless steel, titanium, and zirconium have been measured with the established on-line detection system, and the measurement errors are: −2.26%, −1.07%, and 1.61% respectively.
Źródło:
Metrology and Measurement Systems; 2016, 23, 1; 59-70
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active vibration control of Terfenol-D rod of giant magnetostrictive actuator with nonlinear constitutive relations
Aktywne sterowanie drganiami w wielkim aktuatorze magnetostrykcyjnym z rdzeniem typu Terfenol-D przy uwzględnieniu nieliniowych równań konstytutywnych
Autorzy:
Zhou, H-M.
Zhou, Y-H.
Zheng, X. J.
Powiązania:
https://bibliotekanauki.pl/articles/281451.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
aktuator wielki magnetostrykcyjny
nieliniowe równania konstytutywne
analiza tłumienia drgań
giant magnetostrictive actuators
nonlinear constitutive model
negative feedback control law
active control of vibration suppression
Opis:
This paper presents a numerical simulation of active vibration control of the Terfenol-D rad of a giant magnetostrictive transducer with nonlinear constitutive relations. In this control system, the goal is to suppress vibration of the displacement at the free end of the rod that is usually connected with a platform. Due to the inherent nonlinear relation among the applied magnetic field, pre-stress, and strain, the extension of the rod is also nonlinear relative to the external applications. Having an analytieal nonlinear constitutive model of the Terfenol-D rod proposed by the last author of this paper and the finite element method employed in the deformation analysis, we propose a numerical code to simulate the dynamic behavior of the control system when the negative displacement and velocity control law is utilized to feed back the signals to the actuator. The simulation results display that this control is more effective that other existing control algorithms based on linear constitutive models.
W pracy zaprezentowano symulacje numeryczne aktywnego sterowania za pomocą wielkiego aktuatora magnetostrykcyjnego zawierającego rdzeń wykonany z Terfenolu-D opisanego nieliniowymi zależnościami konstytutywnymi. Celem rozważań jest analiza tłumienia drgań swobodnego końca pręta, zwykle łączonego z platformą. Wydłużenie pręta jest opisane nieliniowym równaniem z powodu nieliniowych relacji pomiędzy przykładanym polem magnetycznym, naprężeniami wstępnymi oraz odkształceniami. Po sformułowaniu przez ostatniego Autora niniejszej pracy modelu pręta z Terfenolu-D oraz zastosowaniu metody elementów skończonych, wprowadzono procedurę numeryczną o symulacji dynamiki układu sterowania z ujemnym sprzężeniem zwrotnym ze względu na przemieszczenie i prędkość końca aktuatora. Wyniki badań pokazały, że tego typu sterowanie staje się bardziej efektywne niż inne strategie redukcji drgań oparte na modelach liniowych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2007, 45, 4; 953-967
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Cone Size on the Bonding Strength of Bimetallic Composite Pipes Produced by Drawing Approach
Autorzy:
Zheng, M.
Zhao, T.
Gao, H.
Teng, H.
Hu, J.
Powiązania:
https://bibliotekanauki.pl/articles/352274.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bi-metallic composite pipe
drawing approach
cone size
interfacial bonding strength
ideal elastoplastic
Opis:
The effect of cone size on interfacial bonding strength of bimetallic composite pipe manufactured by drawing approach is studied on base of the plane strain assumption and ideal elastic-plastic model, a simple expression for the effect of cone size on the bonding strength of bimetallic composite pipes is proposed. The agreement of the predicted results with the experimental results shows the reliability.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 451-456
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of Self-cleaning Polyester Fabrics by Chemical Vapor Deposition of Methyltrichlorosilane/Dimethyldichlorosilane
Opracowanie samooczyszczających tkanin poliestrowych za pomocą chemicznego osadzania z fazy gazowej metylotrichlorosilanu/dimetylodichlorosilanu
Autorzy:
Zheng, Z.
Wang, H.
Zhang, N.
Zhao, X.
Powiązania:
https://bibliotekanauki.pl/articles/232997.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
superhydrophobic
polyester fabric
self-cleaning
permeability
superhydrofobowość
tkanina poliestrowa
tkanina samooczyszczająca
przepuszczalność powietrza
Opis:
Self-cleaning polyester fabrics were prepared by a simple gas phase deposition procedure in which a layer of polydimethylsiloxane nanofilaments was grown onto textile fibers. Superhydrophobic and self-cleaning properties, tensile breaking strength, mechanical stability and permeability of polyester fabrics were investigated. The results showed that the fabrics deposited had superhydrophobicity, and the contact angle and sliding angle of the fabric surface were 159° and 1.7°, respectively. The self-cleaning test showed that dust particles adhere to rolling water and shed from the surface of polyester fabric, leaving an extremely clean surface. In addition, the polyester fabric deposited still has excellent breaking strength and permeability. This approach is simple, inexpensive and has little effect on the mechanical properties of the fabric.
Samooczyszczające tkaniny poliestrowe przygotowano metodą chemicznego osadzania z fazy gazowej, w którym warstwa nanofilamentów polidimetylosiloksanu narastała na włóknach tekstylnych powodując superhydrofobowość i nadając właściwości samoczyszczące. Po obróbce badano wytrzymałość na zerwanie, trwałość mechaniczną i przepuszczalność powietrza. Wyniki wykazały, że zmodyfikowane tkaniny miały właściwości superhydrofobowe, a kąty zwilżania i poślizgu po powierzchni tkaniny wynosiły odpowiednio 159° i 1,7°. Testy zdolności samooczyszczających wykazały, że cząsteczki pyłu przylegają do cząstek wody i wraz z nią spływają po powierzchni tkaniny poliestrowej. Zastosowana metoda jest prosta, niedroga i nie wpływa negatywnie na obrabianą tkaninę.
Źródło:
Fibres & Textiles in Eastern Europe; 2017, 1 (121); 121-124
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigations of the Optical Band Positions and Spin-Hamiltonian Parameters for the Rhombic $VO^{2+}$ Complex in CsCl Crystal
Autorzy:
Fang, W.
Zheng, W.
Yang, D.
Tang, H.
Powiązania:
https://bibliotekanauki.pl/articles/1365269.pdf
Data publikacji:
2014-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.70.Ch
75.10.Dg
61.72.Bb
76.30.Fc
Opis:
The optical band positions and spin-Hamiltonian parameters (g factors $g_{i}$ and hyperfine structure constants $A_{i}$, where i=x, y, z) of the rhombic $VO^{2+}$ complex in CsCl crystal are calculated together from two theoretical methods. One is the complete diagonalization (of energy matrix) method and another is the perturbation theory method. The calculated results from the two methods coincide and are in reasonable agreement with the experimental values. So, both methods are effective in the explanations of optical and electron paramagnetic resonance (EPR) data for $d^1$ ions in crystals. The calculations also suggest that in $d^1$ rhombic octahedra the ground state is almost a pure | $d_{xy}$ ⟩ state. This point is different from that of conjugate $d^9$ (e.g., $Cu^{2+}$) ions in rhombic octahedra where the ground state should be an admixture of ground and first excited states.
Źródło:
Acta Physica Polonica A; 2014, 125, 5; 1206-1209
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 36

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies