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    Wyświetlanie 1-18 z 18
    Tytuł:
    Two meta-heuristic algorithms for scheduling on unrelated machines with the late work criterion
    Autorzy:
    Wang, Wen
    Chen, Xin
    Musial, Jędrzej
    Blazewicz, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/330022.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    late work minimization
    unrelated machines
    tabu search
    genetic algorithm
    minimalizacja opóźnienia
    przeszukiwanie tabu
    algorytm genetyczny
    Opis:
    A scheduling problem in considered on unrelated machines with the goal of total late work minimization, in which the late work of a job means the late units executed after its due date. Due to the NP-hardness of the problem, we propose two meta-heuristic algorithms to solve it, namely, a tabu search (TS) and a genetic algorithm (GA), both of which are equipped with the techniques of initialization, iteration, as well as termination. The performances of the designed algorithms are verified through computational experiments, where we show that the GA can produce better solutions but with a higher time consumption. Moreover, we also analyze the influence of problem parameters on the performances of these metaheuristics.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2020, 30, 3; 573-584
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exact approaches to late work scheduling on unrelated machines
    Autorzy:
    Liu, Xinbo
    Wang, Wen
    Chen, Xin
    Sterna, Malgorzata
    Blazewicz, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/11542692.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    late work scheduling
    unrelated machine
    mathematical model
    branch algorithm
    bound algorithm
    dynamic programming
    planowanie pracy
    model matematyczny
    algorytm podziału
    algorytm ograniczeń
    programowanie dynamiczne
    Opis:
    We consider the scheduling problem on unrelated parallel machines in order to minimize the total late work. Since the problem is NP-hard, we propose a mathematical model and two dedicated exact approaches for solving it, based on the branching and bounding strategy and on enumerating combined with a dynamic programming algorithm. The time efficiencies of all three approaches are evaluated through computational experiments.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2023, 33, 2; 285--295
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Generalized Stokes parameters of random electromagnetic quasi-homogeneous beams on propagation
    Autorzy:
    Chen, J
    Xin, Y
    Chen, Y
    Chen, F
    Zhao, Q
    Powiązania:
    https://bibliotekanauki.pl/articles/174819.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    electromagnetic
    quasi-homogeneous
    generalized Stokes parameters
    polarization
    Opis:
    The expressions for the elements of the on-axis and transverse generalized Stokes parameters of random electromagnetic quasi-homogeneous beams on propagation are presented and are used to study the polarization properties of the beams. Some typical numerical calculations of the on-axis and transverse Stokes parameters, polarization properties of the beams on propagation are illustrated. The results show that for different sources all the on-axis parameters are identical in the near field and keep fixed values in the far field. But the transverse parameters are affected greatly by the properties of the source even in the near field. We have also found that the spatial profiles of the transverse parameters remain unchanged upon propagation.
    Źródło:
    Optica Applicata; 2013, 43, 2; s. 205-216
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spectral degrees of cross-polarization of stochastic anisotropic electromagnetic beams in modified non-Kolmogorov atmospheric turbulence
    Autorzy:
    Chen, F.
    Chen, J.
    Zhao, Q.
    Chen, Y
    Xin, Y.
    Li, J.
    Pan, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/174614.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    quasi-homogenous source
    modified non-Kolmogorov turbulence
    generalized Stokes parameters
    Opis:
    Based on the extended Huygens–Fresnel principle, variations in generalized Stokes parameters of stochastic anisotropic electromagnetic beams propagating through modified non-Kolmogorov atmospheric turbulence have been analyzed. The changes in generalized Stokes parameters with different turbulence parameters and source parameters were analyzed first. After that, the distributions of the spectral degrees of cross-polarization (SDCP) of isotropic beams and anisotropic beams were simulated. The results show that the profiles of distribution of SDCP of these two kinds of beams are very different in the near field, and will fluctuate through the propagation in atmospheric turbulence, but at last, when the propagation distance is long enough, the difference in the source makes a slight difference in the final profiles of SDCP in the output plane. They mainly depended on the turbulence perturbation, and in the weak turbulence, the profiles of final distribution show more flatter features.
    Źródło:
    Optica Applicata; 2013, 43, 4; 773-783
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on the Optical and EPR Spectral Data and the Local Structure for the Tetragonal $Nb^{4+}$ Center in Glasses
    Autorzy:
    Wu, Xiao-Xuan
    Yu, Xin-Peng
    Zheng, Wen-Chen
    Powiązania:
    https://bibliotekanauki.pl/articles/1402323.pdf
    Data publikacji:
    2015-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    76.30.He
    71.70.Ch
    78.40.Pg
    78.55.Qr
    Opis:
    Two optical bands and four EPR (or spin-Hamiltonian) parameters (g factors $g_{∥}$, $g_{⊥}$ and hyperfine structure constants $A_{∥}$, $A_{⊥}$) of the tetragonally-compressed $Nb^{4+}$ octahedral center in glasses are calculated from two methods, the complete diagonalization (of energy matrix) method and the perturbation theory method. Both methods are founded on the two-spin-orbit-parameter model where both the contribution to the spectral data from the spin-orbit parameter of central $d^{n}$ ion and that of ligand ion via covalence effect are considered. The calculated results from both the complete diagonalization (of energy matrix) method and perturbation theory method show reasonable agreement with the experimental values. The signs and possible misprint for the observed hyperfine structure constants $A_{∥}$ and $A_{⊥}$ are suggested, and the local structure of the tetragonal $Nb^{4+}$ center in glasses due to the Jahn-Teller effect is gained from the calculations. The results are discussed.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 1; 72-75
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust dual color images watermarking scheme with hyperchaotic encryption based on quaternion DFrAT and genetic algorithm
    Autorzy:
    Luo, Hui-Xin
    Gong, Li-Hua
    Chen, Su-Hua
    Powiązania:
    https://bibliotekanauki.pl/articles/27310094.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    color image watermarking
    hyperchaotic encryption
    quaternion discrete fractional angular transform
    quaternion singular value decomposition
    genetic algorithm
    Opis:
    A robust dual color images watermarking algorithm is designed based on quaternion discrete fractional angular transform (QDFrAT) and genetic algorithm. To guarantee the watermark security, the original color watermark image is encrypted with a 4D hyperchaotic system. A pure quaternion matrix is acquired by performing the discrete wavelet transform (DWT), the block division and the discrete cosine transform on the original color cover image. The quaternion matrix is operated by the QDFrAT to improve the robustness and the security of the watermarking scheme with the optimal transform angle and the fractional order. Then the singular value matrix is obtained by the quaternion singular value decomposition (QSVD) to further enhance the scheme’s stability. The encryption watermark is also processed by DWT and QSVD. Afterward, the singular value matrix of the encryption watermark is embedded into the singular value matrix of the host image by the optimal scaling factor. Moreover, the values to balance imperceptibility and robustness are optimized with a genetic algorithm. It is shown that the proposed color image watermarking scheme performs well in imperceptibility, security, robustness and embedding capacity.
    Źródło:
    Optica Applicata; 2023, 53, 2; 261--280
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Noether Theorems and Discrete Variational Integrators in Field Theory
    Autorzy:
    Xia, Li-Li
    Chen, Li-Qun
    Liu, Chang-Xin
    Powiązania:
    https://bibliotekanauki.pl/articles/1398640.pdf
    Data publikacji:
    2015-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    02.20.Sv
    11.30.-j
    Opis:
    The discrete analogue of the Noether-type identities in field theory is investigated by means of the difference discrete variational principle in which the difference is regarded as an entire geometric object. The discrete counterparts of the Noether theorems are obtained. It is proved that there exists the discrete version of the Noether conservation law in field theory. The discretization for the nonlinear Schrödinger equation is presented to illustrate the results.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 3; 669-673
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and Characterisation of PSA/CNT/TiO2 Nano Composites and Fibres
    Przygotowanie i charakterystyka nanokompozytów PSA/CNT/TiO2 i wykonanych z nich włókien
    Autorzy:
    Xin, B J
    Chen, Z M
    Wu, X. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/232556.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    nanocomposites
    electrical conductivity
    ultraviolet resistance
    nanokompozyty
    przewodnictwo elektryczne
    odporność ultrafioletowa
    stabilność termiczna
    Opis:
    Polysulfonamide/carbon nanotubes/titanium dioxide (PSA/CNT/TiO2) nano composite spinning solutions with different CNT/TiO2 contents were prepared using the physical blending method. The corresponding fibers were extruded through a set of wet spinning unit, and composite membranes were prepared by the spin-coating method. The performances of the PSA/CNT/TiO2 nano fibers and membranes were investigated by means of SEM, FTIR and XRD etc. The influence of CNT and TiO2 on the mechanical properties, thermal stability, electrical conductivity and ultraviolet resistance of PSA nano composites was also analysed in this study. The experimental results showed that low contents of CNT/TiO2 can be distributed homogeneously in the PSA matrix; the molecular structure and chemical composition of PSA did not changed obviously; crystallisation in PSA occured at low CNT/TiO2 contents because it can act as a nucleation agent; the electrical conductivity and ultraviolet resistance of PSA nano composites can be improved significantly by blending CNT/TiO2 into the PSA matrix.
    Przygotowano przędący roztwór nanokompozytów polisulfonamid/nanorurki węglowe/dwutlenek tytanu (PSA/CNT/TiO2) o różnej zawartości CNT/TiO2. Zastosowano system przędzenia na mokro z wytłaczaniem włókien przez zestaw filierowy, membrany kompozytowe przygotowano stosując metodę powlekania. Właściwości nanowłókien PSA/CNT/TiO2 i błon badano za pomocą SEM, FTIR i dyfrakcji rentgenowskiej. Zbadano również wpływ CNT i TiO2 na właściwości termiczne, stabilność termiczną, przewodność elektryczną i odporność na promienie UV nanokompozytów PSA. Wyniki badań wykazały, że przy niskiej zawartość CNT/TiO2 można uzyskać równomierne rozłożenie nanocząstek w matrycy polimerowej PSA bez zmian struktury molekularnej i składu chemicznego PSA; krystalizacja w PSA zachodzi również przy niskiej zawartości CNT/TiO2, gdzie cząsteczki wypełniacza służą jako zarodki krystalizacji; polepszenie przewodności elektrycznej i właściwości barierowych przeciw UV można uzyskać przez dodanie do matrycy PSA badanych dodatków.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2013, 1 (97); 24-28
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation and Characterisation of PSA/CNT Composites and Fibres
    Wytwarzanie i charakteryzacja kompozytów polisulfonamidowych z udziałem nanorurek węglowych oraz wytworzonych z nich włókien
    Autorzy:
    Chen, Z.
    Xin, B.
    Wu, X.
    Wang, X.
    Du, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/232490.pdf
    Data publikacji:
    2012
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    polysulfonamide
    nanorurki węglowe
    nanokompozyty
    własności termiczne
    przewodność elektryczna
    carbon nanotube
    nanocomposites
    thermal property
    electrical conductivity
    Opis:
    In this paper, polysulfonamide/carbon nanotube (PSA/CNT) composite solutions with different CNT contents were prepared using the physical blending method. Corresponding composite fibers were extruded and fabricated through a set of wet spinning units, and composite membranes were prepared by the spin-coating method. The PSA/CNT composite fibers and membranes were characterised by means of SEM, FTIR and XRD among others. The mechanical, thermal and electrical properties were also analysed in this study. The experimental results show that CNT at low contents can be distributed homogeneously in the PSA matrix. Furthermore the molecular structure and chemical composition of PSA does not undergo an obvious change. Crystallisation in the PSA can be promoted at low CNT contents because the nano-particles can act as a nucleation agent. Moreover the electrical conductivity of PSA can be improved significantly by the blending of CNT.
    Przygotowano szereg zestawów polisulfonamidu i różnej ilości nanorurek węglowych. Z przygotowanego kompozytu wyprodukowano włókna i folie, które zostały scharakteryzowane przez skaningową mikroskopię elektronową, spektroskopię w podczerwieni i dyfrakcję rentgenowską. Analizowano również właściwości mechaniczne, przewodność cieplną i elektryczną otrzymanych próbek. Wyniki wskazują, że przy małym stężeniu nanorurek węglowych mogą one być rozprowadzone jednorodnie w całej matrycy; struktura molekularna i właściwości matrycy PSA nie ulegają zmianie; krystalizacja w matrycy PSA inicjowana jest przez nanorurki; przewodność elektryczna kompozytu zależy w dużym stopniu od ilości dodanych nanorurek.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2012, 5 (94); 21-25
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on characteristics of embedded resonator sensor based on PtS2
    Autorzy:
    Li, Xin
    Li, Xieyuan
    Zhang, Haitao
    Chen, Shuang
    Liu, Shurong
    Li, Yang
    Powiązania:
    https://bibliotekanauki.pl/articles/27310092.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    embedded
    microring resonator
    U-shaped feedback waveguide
    PtS2 core layer
    Opis:
    An embedded microring resonator model using PtS2 as the core layer was designed and optimized for sensing. The inner layer is made of PtS2, and SiO2 and Si3N4 are used as cladding. The overall structure is Si3N4-SiO2-PtS2-SiO2-Si3N4. Field strength distribution of longitudinal section of single straight waveguide and the longitudinal section of coupling part of straight and annular waveguides are simulated according to the coupled-mode theory. The transfer matrix method is used to analyze characteristics between the length of the U-shaped feedback waveguide and the circumference of microring and the change of attenuation factor and coupling coefficient on the output spectrum. The simulation results showed that the embedded microring resonator with PtS2 as the core presents excellent optical properties. The resonance depth is more than –50 dB, and the sensitivity can reach 1806.61 dB/RIU. When the resonance wavelength is 1550.86 nm and the self-coupling coefficient is 0.9849. The corresponding detection limit is about 1.66056×10–7 dB/RIU, and the quality factor is 2.8848×10–5 under the measurement system with a signal-to-noise ratio of 30 dB. Compared with the traditional single microring structure, the proposed microring presents a higher free spectral range and more suitable for the fabrication of high-sensitivity, low-detection limit, and large-measurement range sensors.
    Źródło:
    Optica Applicata; 2023, 53, 2; 213--226
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of vinasse and silica mud on the performance of thermophilic fermentation of brewery sludge from brewery waste substrates
    Autorzy:
    Xin, Y.
    Shen, J.
    Wang, B.
    Zhu, X.
    Wang, Y.
    Wang, G.
    Chen, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/950042.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    brewery waste
    anaerobic digestion
    thermophilic fermentation
    odpady browarnicze
    fermentacja beztlenowa
    fermentacja termofilna
    Opis:
    The anaerobic digestion of mixing brewery sludge with vinasse and silica mud at various ratios under thermophilic conditions was explored. Vinasse, silica mud and beer sludge (the sludge from the treatment of beer wastewater) are the main solid wastes of the beer production. Uncontrolled decom-position of these wastes could cause large-scale contamination of soil, water, and air. The results of the investigation showed that the optimal ratio of beer sludge and vinasse was 1:1 under total solids of 10%, producing the highest amount of gas of 1.34 cm3/g within 24 h and 4.06 cm3/g in 10 days. The silica mud weakened the fermentation process and reduced the gas production, and the concentration of total organic carbon, total nitrogen and volatile solids decreased during the digestion. For the mixture of brewery sludge and vinasse, the content of the total organic matter in the biogas manure was more than 60% and the value of pH was 6.5 after the anaerobic digestion, indicating that the manure can be used as an organic fertilizer.
    Źródło:
    Environment Protection Engineering; 2017, 43, 2; 119-127
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fatigue reliability analysis of the brake pads considering strength degradation
    Autorzy:
    Zhang, Nan
    Jiang, Guang-Jun
    Wu, Dong-Wei
    Chen, Hong-Xia
    Wu, Jian-Xin
    Powiązania:
    https://bibliotekanauki.pl/articles/1841941.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    stress-strength interference model
    dynamic reliability
    strength degradation
    impact load
    Opis:
    Reliability prediction of the brake pads is indispensable to guarantee their safety. In the paper, the fatigue reliability of brake pads is analyzed by dynamic stress-strength interference (SSI) model considering strength degradation. Firstly, reliability model of the brake pads was established based on stress-strength interference model considering the influence of impact load. Then reliability of the brake pads was predicted under different impact load frequency and initial strength. Finally, the influence of random degradation strength on reliability was studied by contrast. The analysis results show that random strength degradation, impact load and initial strength have great influence on reliability prediction for the brake pads. Therefore, the reliability prediction of the brake pads fatigue strength considering strength degradation is more in line with the actual situation and the calculation accuracy is higher.
    Źródło:
    Eksploatacja i Niezawodność; 2020, 22, 4; 620-626
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Yemeni Natural Zeolite (Al-Ahyuq Area) and its Environment Applications: A Review
    Autorzy:
    Alshameri, Aref
    Xinghu, Wei
    Dawood, Ammar Salman
    Xin, Chen
    Yan, Chunjie
    Assabri, Amer M.
    Powiązania:
    https://bibliotekanauki.pl/articles/125297.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    natural Yemeni zeolite
    Al-Ahyuq area
    mineralogical
    chemical composition
    environment application
    water treatment
    Opis:
    This research characterizes a natural zeolitic-rich tuff from Yemen (Al-Ahyuq area) and its potential in environmental applications. A total of 40 zeolite samples of Al-Ahyuq area were selected and fully characterized by a variety technique to obtain the mineralogical and physicochemical parameters. Our results show that the purities of zeolite minerals range from 78 to ~100% zeolite. Clinoptilolite and mordenite are the major mineral zeolite whereas heulandite and stilbite occur in minor amounts present in the zeolite deposit. Accessory minerals include quartz, illite, mica, feldspar, kaolinite, and smectite. In addition, the chemical compositions of Al-Ahyuq zeolitic tuffs are found to be comparable with other zeolites compositions of high economic value in the world. Moreover, its environment application was also discussed in this paper.
    Źródło:
    Journal of Ecological Engineering; 2019, 20, 4; 157-166
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    pUC18-CpG stimulates RAW 264.7 via TBK1-mediated pathway and presents adjuvanticity in mice
    Autorzy:
    Wu, J.
    Chen, Q.
    Xin, T.
    Sun, Y.
    Jia, H.
    Hou, S.H.
    Guo, X.Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087554.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adjuvant
    CpG DNA
    Echinococcus granulosus
    TBK1
    type I interferons
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 195-201
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genotyping and pathogenic characterization of canine distemper virus based on mutations in the hemagglutinin gene in Chinese domestic dogs
    Autorzy:
    Chen, M.
    Xin, T.
    Hou, S.
    Lin, W.
    Song, W.
    Zhu, H.
    Huang, K.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087680.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine distemper virus
    hemagglutinin
    phylogenetic analysis
    animal infection
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 3; 623-629
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and expression pattern of RGS21 gene, a novel RGS member
    Autorzy:
    Li, Xin
    Chen, Lei
    Ji, Chaoneng
    Liu, Bing
    Gu, Jiefeng
    Xu, Jian
    Zou, Xianqiong
    Gu, Shaohua
    Mao, Yumin
    Powiązania:
    https://bibliotekanauki.pl/articles/1041351.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    RGS21
    G-protein signaling pathway
    G-protein α subunit (Gα)
    Opis:
    Regulators of G-protein signaling (RGS) proteins are known for the RGS domain that is composed of a conserved stretch of 120 amino acids, which binds directly to activated G-protein α subunits and acts as a GTPase-activating protein (GAP), leading to their deactivation and termination of downstream signals. In this study, a novel human RGS cDNA (RGS21), 1795 bp long and encoding a 152-amino acid polypeptide, was isolated by large-scale sequencing analysis of a human fetal brain cDNA library. Unlike other RGS family members, RGS21 gene has no additional domain/motif and may represent the smallest known member of RGS family. It may belong to the B/R4 subfamily, which suggests that it may serve exclusively as a negative regulator of αi/o family members and/or αq/11. PCR analysis showed that RGS21 mRNA was expressed ubiquitously in the 16 tissues examined, implying general physiological roles.
    Źródło:
    Acta Biochimica Polonica; 2005, 52, 4; 943-946
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    cDNA cloning, gene organization and expression analysis of human peptidylarginine deiminase type VI.
    Autorzy:
    Zhang, Jiayi
    Dai, Jianliang
    Zhao, Enpeng
    Lin, Yun
    Zeng, Li
    Chen, Jinzhong
    Zheng, Huari
    Wang, Yu
    Li, Xin
    Ying, Kang
    Xie, Yi
    Mao, YuMin
    Powiązania:
    https://bibliotekanauki.pl/articles/1041522.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ovary
    ePAD
    peptidylarginine deiminase
    hPADVI
    Opis:
    Peptidylarginine deiminase (PAD) catalyzes the post-translational modification of protein through the conversion of arginine to citrulline in the presence of calcium ions. Human, similar to rodents, has four isoforms of PAD (type I, II, III and IV/V), each of which is distinct in substrate specificity and tissue specific expression. In our large-scale sequencing project, we identified a new human PAD cDNA from a human fetal brain cDNA library. The putative protein encoded by this cDNA is designated hPADVI. Expression analysis of hPADVI showed that it is mainly expressed in adult human ovary and peripheral blood leukocytes. We conclude that hPADVI may be orthologous to mouse ePAD, basing on sequence comparison, chromosome localization and exon-intron structure analysis. PAD-mediated deimination of epithelial cell keratin resulting in cytoskeletal remodeling suggests a possible role for hPADVI in cytoskeletal reorganization in the egg and in early embryo development. This study describes a new important member of the human PAD family.
    Źródło:
    Acta Biochimica Polonica; 2004, 51, 4; 1051-1058
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and sequence analysis of the complete VP2 gene of canine parvovirus from Chinese domestic pets and determination of the pathogenesis of these circulating strains in beagles
    Autorzy:
    Chen, M.R.
    Guo, X.Y.
    Wang, Z.Y.
    Jiang, Y.T.
    Yuan, W.F.
    Xin, T.
    Hou, S.H.
    Song, T.Q.
    Lin, W.D.
    Zhu, H.F.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087542.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine parvovirus
    molecular epidemiology
    phylogenetic analysis
    pathogenesis
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 287-296
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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