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    Wyświetlanie 1-12 z 12
    Tytuł:
    Biosorption of Pb(II) and Zn(II) by Extracellular Polymeric Substance (Eps) of Rhizobium Radiobacter : Equilibrium, Kinetics and Reuse Studies
    Autorzy:
    Wang, L.
    Yang, J.
    Chen, Z.
    Liu, X.
    Ma, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/204971.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    biosorption
    extracellular polymeric substance
    EPS
    Rhizobium radiobacter
    heavy metal
    kinetics
    Opis:
    The extracellular polymeric substance (EPS) produced from Rhizobium radiobacter F2, designated as EPSF2 , was investigated as a biosorbent for the removal of Pb(II) and Zn(II) from aqueous solution. The optimum biosorption pH values were 5.0 for Pb(II) and 6.0 for Zn(II). Kinetics study revealed that the biosorption followed pseudo-first-order model well, and the equilibrium data fit the Langmuir model better. The adsorbed metal ions could be effectively desorbed by HCl. Desrobed EPSF2 regained 80% of the initial biosorption capacity after five cycles of biosorption-desorption-elution. These results demonstrated that EPSF2 could be a promising alternative for Pb(II) and Zn(II) removal from aqueous solution.
    Źródło:
    Archives of Environmental Protection; 2013, 39, 2; 129-140
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role of high-grade Bentonite powder in coccidiosis and its effects on feed conversion ratio and blood parameters in broiler chicken
    Autorzy:
    Hayajneh, F.M.F.
    Abdelqader, A.
    Alnimer, M.A.
    Abedal-Majed, M.A.
    Al-Khazaleh, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087366.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    broiler
    coccidiosis
    calcium bentonite
    poultry
    triglycerides
    protein
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 1; 97-107
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of some herbal extracts and pesticides on the biological parameters of Bemisia tabaci (Genn.) (Hem.: Aleyrodidae) pertaining to tomato grown under controlled conditions
    Autorzy:
    Jafarbeigi, F.
    Samih, M.A.
    Zarabi, M.
    Esmaeily, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/961660.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bemisia tabaci
    cotton whitefly
    tomato
    biological parameters and herbal compound
    Opis:
    The sweet potato whitefly, Bemisia tabaci (Genn.) (Biotype A: Hem.: Aleyrodidae) is one of the most important pests in Iran. The development of alternative methods that are not chemical applications, is necessary in pest management for the sake of human health and for the safety of the environment. In this research project, the effect of four herbal compounds Fumaria parviflora Lam. (Fumariaceae), Teucrium polium L. (Lamiaceae), Calotropis procera (Willd.) R. Br. (Asclepiadaceae), Thymus vulgaris L. (Lamiaceae) on the same biological parameters of cotton whitefly were compared with the insecticides azadirachtin and pymetrozin. The results showed significant differences between herbal compounds and insecticides on: egg longevity (F6, 39 = 2.96, p < 0.05), pupa longevity (F6, 37 = 4.49, p < 0.01) and adult longevity (F6, 31 = 4.47, p < 0.01); egg mortality (F6, 39 = 6.71, p < 0.001), total egg mortality (F6, 39 = 6.71, p < 0.001), sex ratio (female) (F6, 30 = 3.49, p < 0.01), oviposition period (F6,31 = 7.50, p < 0.001) and total fecundity/female (F6, 31 = 8.23, p < 0.001). These results indicated that a fumitory extract and pymetrozin had the best effect on longevity and mortality, respectively. According to the results, the fumitory had a noticeable effect on the different life stages of the sweet potato whitefly.
    Źródło:
    Journal of Plant Protection Research; 2012, 52, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sublethal effects of some synthetic and botanical insecticides on Bemisia tabaci (Hemiptera: Aleyrodidae)
    Autorzy:
    Esmaeily, S.
    Samih, M.A.
    Zarabi, M.
    Jafarbeigi, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/66568.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sublethal effect
    synthetic insecticide
    botanical insecticide
    Bemisia tabaci
    cotton whitefly
    Hemiptera
    Aleyrodidae
    pesticide
    plant extract
    Opis:
    In addition to direct mortality caused by insecticides, some biological traits of insects may also be affected by sublethal insecticide doses. In this study, we used the age-stage, two-sex life table method to evaluate the sublethal effects of the four synthetic insecticides: abamectin, imidacloprid, diazinon, and pymetrozin as well as the botanical insecticide taken from Calotropis procera (Asclepiadaceae) extract, on eggs of the cotton whitefly, Bemisia tabaci (Hem.: Aleyrodidae). The lowest and highest survival rates and oviposition periods were observed in whiteflies treated by diazinon and imidacloprid, respectively. We found significant differences in the net reproductive rate (R0), the intrinsic rate of increase (r), the finite rate of increase (?), and the gross reproductive rate (GRR) among different insecticides. Altogether, our results showed that pymetrozin and C. procera induced the most sublethal effects, thus they may be suitable candidates for use in integrated pest management programs of B. tabaci.
    Źródło:
    Journal of Plant Protection Research; 2014, 54, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of bio-agents on pathogenic fungi associated with roots of some deciduous fruit transplants and growth parameters in New Valley Governorate, Egypt
    Autorzy:
    El-Morsi, M.E.-M.A.
    Abdel-Monaim, M.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/66615.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Root rot and wilt disease complex was detected in several fig (Ficus carica L.), grapevine (Vitis vinifera L.), and pomegranate (Punica granatum L.) transplants in nurseries and new orchards of the El-Kharga, Baris, Balate, El-Dakhla, and El-Farafrah districts, of the New Valley governorate, Egypt. The percentage of root rot/wilt incidence and severity on fig, grapevine, and pomegranate transplants in the surveyed districts differed. The average percentages of root rot/wilt incidence and severity, in the surveyed districts, were 41.26, 31.42% in fig, 38.2, 29.5% in grapevine, and 32.1, 23.7% in pomegranate transplants, respectively. The most frequently isolated fungi from rotted roots of fig, grapevine, and pomegranate transplants were Fusarium oxysporum, Rhizoctonia solani, and Macrophomena phaseolina. In pathogenicity tests, all the tested fungi were pathogenic to fig, grapevine, and pomegranate transplants. Under laboratory conditions, all of the following tested bio-agents: Azotobacter sp., Bacillus cereus, B. megaterium, and B. subtilis, were able to inhibit growth of the causal pathogens to different degrees. The effect of these bio-agents individually and/or mixed, when used as a soil drench treatment, were varied in reducing the incidence and severity of root rot/wilt diseases in fig, grapevine, and pomegranate transplants under greenhouse conditions. The mixed bio-agents gave the highest protection against root rot/wilt diseases compared with the individually used of bio-agents. All treatments significantly increased plant height, number of leaves/transplant, leaf area, fresh and dry weight/transplant compared with the control treatment.
    Źródło:
    Journal of Plant Protection Research; 2015, 55, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic electric vehicles charging load allocation strategy for residential area
    Autorzy:
    Wang, Y.
    Ma, X.
    Wang, F.
    Hou, X.
    Sun, H.
    Zheng, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/140939.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electric vehicles
    charging power management
    allocation strategy
    priority assessment
    Opis:
    A large amount of electric vehicles (EVs) charging load will bring significant impact to the power system. An appropriate resource allocation strategy is required for securing the power system safety and satisfying EVs charging demand. This paper proposed a power coordination allocation strategy of EVs’ in distribution systems. The strategy divides the allocation into two stages. The first stage is based on scores assigned to EVs through an entropy method, whereas the second stage allocates energy according to EV’s state of charge. The charging power is delivered in order to maximize EV users’ satisfaction and fairness without violation of grid constraints. Simulation on a typical power-limited residential distribution network proves the effectiveness of the strategy. The analysis results indicate that compared with traditional methods, EVs, which have higher charging requirement and shorter available time will get more energy delivered than others. The root-mean-square-error (RMSE) and standard-deviation (SD) results prove the effectiveness of the methodology for improving the balance of power delivery.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 3; 641--654
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microstructure and Mechanical Properties of Duplex Structured Mg-Li-Zn-Y Alloys
    Autorzy:
    Su, J.
    Yang, Y.
    Fu, X.
    Ma, Q.
    Ren, F.
    Peng, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/381787.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    alloy Mg-Li-Zn-Y
    microstructure
    mechanical properties
    extruded
    stop Mg-Li-Zn-Y
    mikrostruktura
    właściwości mechaniczne
    wytłaczanie
    Opis:
    As-cast Mg-6Li-0.3Zn-0.6Y and Mg-6Li-1.2Zn-1.2Y (wt%) alloys were prepared and extruded at 260 ºC with an extrusion ratio of 25. The microstructure and mechanical behavior of as-cast and extruded alloys are reported and discussed. The results show that Mg-6Li-1.2Zn- 1.2Y alloy is composed of α-Mg, β-Li, and W-Mg3Zn3Y2 phases while Mg-6Li-0.3Zn-0.6Y alloy contains α-Mg, β-Li, W-Mg3Zn3Y2 phase and X-Mg12ZnY. After hot extrusion, the microstructure of specimens is refined and the average grains size of extruded alloys is 15 μm. Dynamic recrystallization occurs during the extrusion, leading to grain refinement of test alloys. Both the strength and elongation of test alloys are improved by extrusion. The extruded Mg-6Li-0.3Zn-0.6Y alloy possesses an ultimate strength of 225 MPa with an elongation of 18% while the strength and elongation of Mg-6Li-1.2Zn-1.2Y alloy are 206 MPa and 28%, respectively. The X-phase in Mg-6Li-0.3Zn- 0.6Y is beneficial to the improvement of strength, but will lead to the decrease of ductility.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 181-185
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of matrine on reducing damage to bovine mammary epithelial cells induced by Staphylococcus aureus alpha-hemolysin
    Autorzy:
    Feng, F.
    Ma, W.W.
    Luo, H.X.
    Guan, C.P.
    Zhou, X.Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087720.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    α-hemolysin
    BMECs
    matrine
    cell damage
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 2; 409-413
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emerging of canine kobuvirus in dogsin China, 2015
    Autorzy:
    Liu, D.F.
    Liu, X.
    Li, Z.J.
    F. Liu
    Hu, X.L.
    Li, Z.G.
    Liu, C.G.
    Ma, J.Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087863.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine kobuvirus (CaKoV)
    dogs
    phylogenetic
    VP1
    China
    Źródło:
    Polish Journal of Veterinary Sciences; 2017, 4; 707-711
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficacy comparison of intraperitoneal anaesthesia and post-operative analgesia regimens in laboratory rats
    Autorzy:
    Moreno-Mateo, F.
    García-Medrano, B.
    Álvarez-Barcia, A.
    Gayoso, M.J.
    Martín-Ferrero, M.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087353.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    pain in rats
    anesthesia for rodents
    analgesia for rodents
    laboratory rats
    animal welfare
    Źródło:
    Polish Journal of Veterinary Sciences; 2020, 23, 1; 127-132
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Research on Characterization of Crushability for Foundry Sand Particles
    Autorzy:
    Dai, Y.
    Ma, Q. Y.
    Li, X. H.
    Zhang, X.
    Hu, F. P.
    Zhang, Y.
    Xie, W. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/379689.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry sand particle
    mechanical load
    AFS grain fineness
    crushability
    piasek odlewniczy
    obciążenie mechaniczne
    rozdrobnienie ziarna
    Opis:
    In this paper, crushability of foundry sand particles was studied. Three kinds of in-service silica sands in foundry enterprises selected as the study object, and foundry sand particles were subjected to mechanical load and thermal load during service were analyzed. A set of methods for simulating mechanical load and thermal load by milling and thermal-cold cycling were designed and researched, which were used to characterize the crushability for silica sand particles, the microstructure was observed by SEM. According to the user’s experience in actual application, the crushability of Sand C was the best and then Sand B, the last Sand A. The results indicated that mechanical load, thermal load and thermal-mechanical load can all be used to characterize the crushability of foundry sand particles. Microscopic appearances can qualitatively characterize the crushability of foundry sand particles to a certain extent, combining with the additions and cracks which are observed on the surface.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 4; 231-235
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seed germination and emergence of Eragrostis tenuifolia (A. Rich.) Hochst. ex Steud. in response to environmental factors
    Autorzy:
    Bittencourt, H.H.
    da Silva Bonome, L.T.
    de Bortoli Pagnoncelli,Jr, F.
    Lana, M.A.
    Muzell Trezzi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/65859.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    seed germination
    emergence
    Eragrostis tenuifolia
    elastic grass
    weed
    plant response
    environmental factor
    irradiance
    temperature
    weed ecology
    weed number
    Opis:
    Eragrostis tenuifolia is a weed species that is gaining ground in Brazil. This weed occurs in pastures, grasslands, crop fields, and roadsides. The objective of this study was to examine the effects of different environmental factors on E. tenuifolia seed germination and seedling emergence. The optimum constant temperature for germination was around 35–30°C. It was also found that 85% of seeds germinated under a 30/20°C alternate temperature regime. Light appears to have a positive effect on seed germination. No seedlings emerged when seeds were buried 3 cm or deeper. The results suggested that E. tenuifolia has the potential to spread into pastures and in no-tillage crop systems in Brazil. Measures such as the use of cover crops and/or soil cultivation can be used to limit germination and seedling emergence, respectively.
    Źródło:
    Journal of Plant Protection Research; 2016, 56, 1
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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