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Tytuł:
Structural and Optical Properties of ZnO Nanowires Doped with Magnesium
Autorzy:
Zhuang, H.
Wang, J.
Liu, H.
Li, J.
Xu, P.
Powiązania:
https://bibliotekanauki.pl/articles/1505046.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.46.Km
61.72.uj
81.15.Gh
78.67.-n
Opis:
ZnO nanowires doped with Mg have been successfully prepared on Au-coated Si (111) substrates using chemical vapor deposition method with a mixture of ZnO, Mg, and activated carbon powders as reactants at 850°C. The structural, compositional, morphological and optical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and photoluminescence spectroscopy. The nanowires are single crystalline in nature and preferentially grow up along [0001] direction with the average diameter and length of about 60 nm and several hundred micrometers, respectively, thinner and longer than the results of literature using the similar method. Room temperature photoluminescence spectroscopy shows a blueshift from the bulk band gap emission, which can be attributed to Mg doping that were detected by energy dispersive X-ray analysis EDX in the nanowires. Finally, the possible growth mechanism of crystalline ZnO nanowires is discussed briefly.
Źródło:
Acta Physica Polonica A; 2011, 119, 6; 819-823
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chinese cabbage BrMYB34.2 transcription factor regulates indolic glucosinolates biosynthesis in Arabidopsis
Autorzy:
Zhao, Y.
Zhang, Y.
Guo, X.
Ma, Y.
Zhang, P.
Liu, H.
Liu, G.
Guo, J.
Powiązania:
https://bibliotekanauki.pl/articles/12705984.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Glucosinolates (GS) are a group of sulfur- and nitrogen-rich plant secondary metabolites that originate from amino acids and exist mainly in plants in the order Brassicales, such as Arabidopsis thaliana (Arabidopsis) and Chinese cabbage (Brassica rapa ssp. pekinensis). To date, several regulatory components responsible for GS biosynthesis have been identified in Arabidopsis. However, the functions of GS biosynthesis regulators in Chinese cabbage have not been clarified. In our current study, a putative ATR1/MYB34 orthologous gene, BrMYB34.2, was isolated from Chinese cabbage leaves. To investigate the function of this gene, we engineered Arabidopsis plants that overexpress BrMYB34.2 ectopically and phenotypic analysis was performed. Moreover, we assayed the accumulation levels of indolic GS (IGS) and aliphatic glucosinolates in transgenic plants and test the expression of key genes of IGS biosynthesis and tryptophan synthesis by Real-time quantitative PCR. And further analysed the resistance of transgenic plants in 5MT stress treatment. The results indicate that ectopic expression of the BrMYB34.2 gene in Arabidopsis was able to up-regulate the accumulation level of IGS due to the increased expression of IGS and Trp biosynthetic genes. Moreover, overexpression of BrMYB34.2 conferred Arabidopsis 5MT resistance. These results suggest that the BrMYB34.2 gene may function as one of the regulators of IGS and Trp biosynthesis in Chinese cabbage.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 1; 85-95
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development and application of isothermal amplification methods for rapid detection of F4 fimbriae producing Escherichia coli
Autorzy:
Zhao, L.Y.
Niu, J.H.
Gao, X.L.
Liu, C.N.
Liu, S.M.
Jiang, N.
Lv, X.P.
Zheng, S.M.
Powiązania:
https://bibliotekanauki.pl/articles/2087340.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Escherichia coli
F4 fimbriae
isothermal amplification
rapid detection
clinical samples
Źródło:
Polish Journal of Veterinary Sciences; 2020, 23, 1; 143-152
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of three species commonly known as“daqingye” by internal leaf anatomy and high-performance liquid chromatography analyses
Autorzy:
Zhang, Y.
Zhu, Y.
Chen, J.
Xia, C.
Deng, J.
Li, H.
Li, Y.
Li, J.
Liu, P.
Powiązania:
https://bibliotekanauki.pl/articles/59301.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
The macroscopic and microscopic morphologies and indigo and indirubin concentration of the traditional Chinese medicine herbs Isatis indigotica Fort., Polygonum tinctorium Ait., and Baphicacanthus cusia (Nees) Bremek, all commonly known as “daqingye”, were determined and compared. The morphological analyses indicated that I. indigotica has leaves with winged petioles and no glandular hairs or crystals, P. tinctorium has leaves with membranous ocrea and clusters of calcium oxalate, and B. cusia has palisade cells in the mesophyll running over the main vein and single cells containing calcium carbonate crystals. Indigo and indirubin are chemical constituents that have been previously isolated from daqingye and were selected in this study as identification markers for high-performance liquid chromatography analysis due to their pharmacological activities. The chromatographic results showed that indigo and indirubin concentration varied significantly among the three species: high concentration of both indigo and indirubin were observed in I. indigotica, the highest concentration among the three daqingye plants was found in P. tinctorium but with low levels of indirubin, and the concentration of indigo and indirubin was quite low in B. cusia. In summary, three different species commonly known as daqingye were accurately distinguished by morphological observation, internal leaf anatomy analysis, and chromatographic analysis.
Źródło:
Acta Societatis Botanicorum Poloniae; 2018, 87, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboratory investigation of self-healing properties on geosynthetic clay liners with flaw
Autorzy:
Zhang, G.-W.
Zhang, H.-Y.
Wang, J.-F.
Zhou, L.
Liu, P.
Jiang, X.
Powiązania:
https://bibliotekanauki.pl/articles/204652.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
landfills
geosynthetic clay liner
self healing
hydraulic conductivity
Opis:
The objective of this paper is to evaluate the self- healing properties of a commercially-available geosynthetic clay liner (GCL) using flexible-wall permeameter. The GCLs are produced by the same factory, but the contents of bentonite are different. Also the hydraulic conductivities (HC) of GCLs with no defect are different. In this study, specimens were completely saturated under the backpressure of 20 kPa before the test. Permeability tests were performed on GCL specimens with penet rating flaw and also on specimens permeated with distilled water and CaCl2 solutions. The test results were presented and discussed. Experimental results showed that the GCL with penetrating flaw did not exhibit complete self-healing in the case of flaw. After 120 days, the hydraulic conductivity increased by approximately an order of magnitude. In addition, CaCl2 solutions had a significant influence on the hydraulic conductivity. The research findings might be of interest to researchers and engineers who design liners for landfills and other liquid containment facilities.
Źródło:
Archives of Environmental Protection; 2015, 41, 1; 53-58
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Construction of a recombinant baculovirus expressing swine hepatitis E Virus ORF2 and preliminary research on its immune effect
Autorzy:
Yang, Z.
Wang, K.
Hu, Y.
Yuan, P.
Yang, Y.
Xie, L.Y.
Huang, S.L.
Liu, J.
Ran, L.
Song, Z.H.
Powiązania:
https://bibliotekanauki.pl/articles/2087759.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
swine HEV
ORF2
baculovirus
immunogenicity
Źródło:
Polish Journal of Veterinary Sciences; 2018, 21, 1; 47-54
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability analysis of electrohydraulic servo valve suffering common cause failures
Analiza niezawodności serwozaworu elektrohydraulicznego narażonego na uszkodzenia spowodowane wspólną przyczyną
Autorzy:
Yang, Y.-J.
Huang, H.-Z.
Liu, Y.
Zhu, S.-P.
Peng, W.
Powiązania:
https://bibliotekanauki.pl/articles/300830.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
EHSV
common cause failures CCF
FMECA
β-factor model
serwozawór elektrohydrauliczny (EHSV)
uszkodzenia spowodowane wspólną przyczyną CCF
analiza przyczyn
skutków i krytyczności uszkodzeń (FMECA)
model współczynnika β
Opis:
The electrohydraulic servo valve (EHSV) is widely used in many engineering fields. Its reliability is of great importance to the reliability and safety of entire servo control systems. With the aim of analyzing and evaluating reliability of EHSV, this paper firstly presents the physical structure and functional principle of EHSV. It is followed by the Failure Mode, Effects and Criticality Analysis (FMECA). From the analysis, the common cause failures (CCF) in the studied EHSV are identified. Lastly, a method that can quantitatively analyze reliability and failure rate of EHSV with considering the common cause failures is proposed. It is observed from the study that the failure rate of the EHSV with CCF is lower than the failure rate without considering CCF.
Serwozawory elektrohydrauliczne (EHSV) mają szerokie zastosowanie w wielu dziedzinach inżynierii. Ich niezawodność ma decydujące znaczenie dla niezawodności i bezpieczeństwa całych układów sterowania serwomechanizmami. W celu analizy i oceny niezawodności zaworów EHSV, w pracy przedstawiono najpierw ich budowę fizyczną i zasadę działania. Następnie przeprowadzono analizę przyczyn, skutków i krytyczności uszkodzeń (FMECA). Na podstawie tej analizy określono uszkodzenia zaworu EHSV spowodowane wspólną przyczyną (CCF). Wreszcie, zaproponowano metodę, za pomocą której można ilościowo analizować niezawodność i awaryjność EHSV z uwzględnieniem uszkodzeń spowodowanych wspólną przyczyną. Badania wykazały, że awaryjność EHSV przy uwzględnieniu CCF jest niższa niż w wypadku nieuwzględnienia CCF.
Źródło:
Eksploatacja i Niezawodność; 2014, 16, 3; 354-359
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pullout evaluation of sawbone experiment in different types of pedicle screws combined with bone cement augmentation for severe osteoporotic spine
Autorzy:
Yang, S.-C.
Liu, P.-H.
Tu, Y.-K.
Powiązania:
https://bibliotekanauki.pl/articles/307271.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
osteoporoza
kości
wytrzymałość
osteoporosis
bone cement augmentation
cannulated pedicle screw
sawbone
pullout strength
Opis:
Purpose: The conventional screw is unable to provide enough screw-bone interface strength for osteoporotic cencellous bone, and complications resulting from loosening or failure of the implants remain a significant clinical problem. Hence, the purpose of this study is to investigate pullout strength and energy in three types of the pedicle screws, including conventional solid pedicle screw, cannulated pedicle screw, and cannulated pedicle screw with a central pin, using osteoporotic sawbone test block with different bone cement volumes through pullout force testing. Methods: The control group (n = 15) of the osteoporotic sawbone test block includes groups A, B, and C to reflect three types of the pedicle screws without bone cement augmentation. The cemented group (n = 45) of the osteoporotic sawbone test block includes groups D1, D2, D3, E1, E2, E3, F1, F2, and F3 to reflect three types of the pedicle screws with PMMA bone cement of 2, 3, and 4 mL augmentation. Results: The results showed that the pullout strength and energy in the cemented group were significantly larger than that in the control group. Moreover, the best performances of the pullout strength and energy in the cemented group were evidenced obviously in the case of cannulated pedicle screw with a central pin with 4 mL bone cement augmentation. Conclusions: This study concludes that cement argumentation in the cannulated pedicle screw with a central pin can increase a pullout strength of pedicle screw for severe osteoporotic patients while bone cement of injective volume is limited.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 2; 55-64
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seismic damage behaviour of aeolian sand reinforced concrete columns with I-shaped structural steel
Autorzy:
Wang, Y. H.
Wang, H. Y.
Wang, Y. P.
Zhao, M.
Qi, J.
Huo, G. Z.
Liu, P. Q.
Powiązania:
https://bibliotekanauki.pl/articles/1849772.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
piasek eoliczny
słup żelbetowy
stal konstrukcyjna
przekrój I
zachowanie
uszkodzenie sejsmiczne
model uszkodzenia
aeolian sand
column
I-shaped steel
structural steel
seismic damage
behaviour
damage model
Opis:
To promote the application of aeolian sand resources for steel-concrete composite structures, an aeolian sand reinforced concrete column with I-shaped structural steel is proposed in this study. Four specimens are designed and manufactured with different replacement rates of aeolian sand. The seismic behaviour and damage evolution process of the specimens are studied by low-cycle repeated loading tests. Based on the test results, the mechanical characteristics, failure modes, hysteresis curves, skeleton curves, energy dissipation capacity, displacement ductility, and stiffness degradation of the specimens with different replacement rates of aeolian sand are analysed. In addition, the effects of the design parameters on the seismic behaviour of the specimens are also studied. The results show that the indexes of the seismic behaviour can be significantly improved by adding steel. Moreover, a revised damage model is proposed, to better reflect the evolution law of seismic damage of aeolian sand reinforced concrete columns with steel. The proposed model can provide an important reference for seismic damage assessment of the columns.
Źródło:
Archives of Civil Engineering; 2020, 66, 4; 633-650
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical analysis of a hollow laser beam transmitting in an off-axis Cassegrain optical antenna system
Autorzy:
Mi, C
Jiang, P
Yang, H.
Ke, S
Li, B
Liu, J.
Powiązania:
https://bibliotekanauki.pl/articles/174358.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Cassegrain optical antenna
off-axis hollow laser beam
receiving efficiency
Opis:
The optical model of a Cassegrain optical antenna with a confocal double-parabolic reflector structure has been designed, and the propagation characteristics of a hollow laser beam, which could avoid the loss of energy caused by the subreflector center reflection in the optical antenna, has been researched in this paper. By detailed analysis and numerical calculations of a receiving Cassegrain antenna with different deflection angles, the coupling efficiency curve and 3-D distributions of the receiving light intensity for different inclined angles have been obtained.
Źródło:
Optica Applicata; 2014, 44, 3; 421-431
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scanning-Gate Microscopy of Semiconductor Nanostructures: An Overview
Autorzy:
Martins, F.
Hackens, B.
Sellier, H.
Liu, P.
Pala, M. G.
Baltazar, S.
Desplanque, L.
Wallart, X.
Bayot, V.
Huant, S.
Powiązania:
https://bibliotekanauki.pl/articles/2047914.pdf
Data publikacji:
2011-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.21.La
73.23.Ad
03.65.Yz
85.35.Ds
Opis:
This paper presents an overview of scanning-gate microscopy applied to the imaging of electron transport through buried semiconductor nanostructures. After a brief description of the technique and of its possible artifacts, we give a summary of some of its most instructive achievements found in the literature and we present an updated review of our own research. It focuses on the imaging of GaInAs-based quantum rings both in the low magnetic field Aharonov-Bohm regime and in the high-field quantum Hall regime. In all of the given examples, we emphasize how a local-probe approach is able to shed new, or complementary, light on transport phenomena which are usually studied by means of macroscopic conductance measurements.
Źródło:
Acta Physica Polonica A; 2011, 119, 5; 569-575
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physico-Mechanical Performance Evaluation of Large Pore Synthetic Meshes with Different Textile Structures for Hernia Repair Applications
Ocena właściwości fizyko-mechanicznych syntetycznych chirurgicznych siatek przepuklinowych
Autorzy:
Liu, P.
Shao, H.
Chen, N.-L.
Jiang, J.-H.
Powiązania:
https://bibliotekanauki.pl/articles/233556.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
hernia repair
large-pore meshes
physico-mechanical properties
warp knitted meshes
pore shape
meshes with inlays
przepuklina
siatki o dużych porach
właściwości fizykomechaniczne
osnowowe siatki dzianinowe
kształt porów
siatki z wkładkami
Opis:
This paper studied the relationship between the textile structure of warp knitted hernia repair meshes and their physico-mechanical properties to solve the problem of hernia patch application evaluation and clear the mechanism of hernia patch structure-performance for clinical application. Six different prototypes of large pore meshes were fabricated, including four kinds of meshes with different pore shapes: H (hexagonal), D (diamond), R (round) and P (pentagonal); and two kinds of meshes with inlays: HL (hexagonal with inlays) and DL (diamond with inlays), using the same medical grade polypropylene monofilament. All meshes were designed with the same walewise density and coursewise density. Then the influence of other structural parameters on the physico-mechanical properties of the meshes was analysed. The physico-mechanical properties of these meshes tested meet the requirements of hernia repair, except mesh DL, whose tear resistance strength (12.93±2.44 N in the transverse direction) was not enough. Mesh R and P demonstrated less anisotropy, and they exhibited similar physico-mechanical properties. These four kinds of meshes without inlays demonstrated similar ball burst strength properties, but mesh HL and DL exhibited better ball burst strength than the others. All in all, uniform structures are expected to result in less anisotropy, and meshes with inlays, to some extent, possess higher mechanical properties. And the ratio of open loop number to closed loop number in a repetition of weave of fabric has marked effect on the physico-mechanical properties. Thus we can meet the demands of specific patients and particular repair sites by designing various meshes with appropriate textile structures.
W pracy przeanalizowano zależność między strukturą chirurgicznych siatek przepuklinowych a ich właściwościami fizyczno-mechanicznymi. Opracowano sześć różnych prototypów siatek o dużych porach, w tym cztery rodzaje oczek o różnych kształtach porów: H (sześciokąt), D (romb), R (okrąg) i P (pięciokąt); oraz dwa rodzaje oczek z inkrustacją: HL (sześciokątne z inkrustacją) i DL (romb z inkrustacją), z wykorzystaniem tego samego monofilamentu z polipropylenu klasy medycznej. Wszystkie oczka zostały zaprojektowane z taką samą gęstością. Następnie analizowano wpływ pozostałych parametrów strukturalnych na właściwości fizyczno-mechaniczne oczek. Właściwości fizyczno-mechaniczne badanych siatek spełniają wymagania, z wyjątkiem siatki DL, której wytrzymałość na rozdarcie (12,93 ± 2,44 N w kierunku poprzecznym) nie była wystarczająca. Siatki R i P wykazywały mniejszą anizotropię i podobne właściwości fizyko-mechaniczne. Powyższe cztery rodzaje siatek bez inkrustacji wykazywały podobne właściwości wytrzymałości na pękanie, a siatki HL i DL wykazywały lepszą wytrzymałość na rozerwanie niż pozostałe. Stwierdzono, że jednolite struktury charakteryzują się mniejszą anizotropią, a siatki z inkrustacją, do pewnego stopnia, mają lepsze właściwości mechaniczne.
Źródło:
Fibres & Textiles in Eastern Europe; 2018, 2 (128); 79-86
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors Affecting the Measurement of the Percentage of Gaseous Products from Boron-based Fuel-rich Propellants
Autorzy:
Liu, L.-L.
He, G.-Q.
Wang, Y.-H.
Liu, P.-J.
Powiązania:
https://bibliotekanauki.pl/articles/358720.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
fuel-rich propellant
percentage gaseous products
combustion
filter media
Opis:
Acid-washed asbestos, carbon fibre, and MgO with carbon fibre were used as the filter media in order to compare their filtering qualities in the estimation of the percentage of gaseous products (PGP) arising from the combustion of singlebase propellants, double-base propellants, and boron-based fuel-rich propellants. The comparison was based on an analysis of the experimentally registered influence of the propellant formulation, the propellant load, the maximum chamber pressure and the thickness of the MgO filter layer on the PGP from the fuel-rich propellant, and in particular on the PGP produced by combustion of boron-based fuel-rich propellant. The results showed that the experimental values of the PGP were closer to the theoretically predicted values when carbon fibre mixed with MgO powder was used as the filter medium. The PGP of boron-based fuel-rich propellant increased when the AP was in part replaced by HMX, when the AP content was increased and when boron was in part replaced by magnesium-aluminum alloy. In terms of the apparatus used in these experiments, the propellant loading density was found to have little correspondence with the PGP for boron-based fuel-rich propellant. The optimal propellant loading density for the chamber volume of 85 cm3 was found to be 2-2.5 g, in view of the reliability and safety of the experiment. It is emphasised that the thickness of the MgO filter layer is very important for the accuracy and reliability of the experiment, and that the optimum should be determined by experiment.
Źródło:
Central European Journal of Energetic Materials; 2014, 11, 1; 15-29
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis Of Factors Affecting Gravity-Induced Deflection For Large And Thin Wafers In Flatness Measurement Using Three-Point-Support Method
Autorzy:
Liu, H.
Dong, Z.
Kang, R.
Zhou, P.
Gao, S.
Powiązania:
https://bibliotekanauki.pl/articles/220380.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
flatness measurement
large and thin silicon wafer
GID
three-point-support method
initial stress
Opis:
Accurate flatness measurement of silicon wafers is affected greatly by the gravity-induced deflection (GID) of the wafers, especially for large and thin wafers. The three-point-support method is a preferred method for the measurement, in which the GID uniquely determined by the positions of the supports could be calculated and subtracted. The accurate calculation of GID is affected by the initial stress of the wafer and the positioning errors of the supports. In this paper, a finite element model (FEM) including the effect of initial stress was developed to calculate GID. The influence of the initial stress of the wafer on GID calculation was investigated and verified by experiment. A systematic study of the effects of positioning errors of the support ball and the wafer on GID calculation was conducted. The results showed that the effect of the initial stress could not be neglected for ground wafers. The wafer positioning error and the circumferential error of the support were the most influential factors while the effect of the vertical positioning error was negligible in GID calculation.
Źródło:
Metrology and Measurement Systems; 2015, 22, 4; 531-546
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fruit biomechanics based on anatomy: a review
Autorzy:
Li, Z.
Yang, H.
Li, P.
Liu, J.
Wang, J.
Xu, Y.
Powiązania:
https://bibliotekanauki.pl/articles/24093.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
Fruit biomechanics is needed for quality determination, multiscale modelling and engineering design of fruit processes and equipments. However, these determined fruit biomechanics data often have obvious differences for the same fruit or tissue. In order to investigate it, the fruit biomechanics based on anatomy was reviewed in this paper. First, the anatomical characteristics of fruit biomaterials were described at the macroscopic ‘tissue’ level and microscopic ‘cellular’ level. Subsequently, the factors affecting fruit biomechanics based on anatomy and the relationships between fruit biomechanics, texture and mechanical damage were summarised according to the published literature. Fruit biomechanics is mainly affected by size, number and arrangement of cells, quantity and volume of intracellular spaces, structure, thickness, chemical composition and permeability of cell walls, and pectin degradation level and turgor pressure within cells based on microanatomy. Four test methods and partial determined results of fruit biomechanics were listed and reviewed. The determined mechanical properties data of fruit are only approximate values by using the existing four test methods, owing to the fruit biomaterials being non-homogeneous and living. Lastly, further aspects for research on fruit biomechanics were proposed for the future.
Źródło:
International Agrophysics; 2013, 27, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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