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    Wyświetlanie 1-4 z 4
    Tytuł:
    Removal of chromium(VI) from wastewater through ion exchange. Kinetic and scale up studies
    Autorzy:
    Ahmad, Syed Waqas
    Zafar, Muhammad Shahzad
    Ahmad, Sajjad
    Zia-Ul-Haq, M.
    Ashraf, Muhammad
    Rabbani, Javed
    Ullah, Sami
    Powiązania:
    https://bibliotekanauki.pl/articles/208034.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    ion exchange
    industrial wastewater
    anion resin
    heavy metals
    cadmium
    wymiana jonowa
    ścieki przemysłowe
    żywica anionowa
    metale ciężkie
    kadm
    Opis:
    Chromium(VI) ions were removed from industrial wastewater. In this regard, a rig was fabricated carrying alkaline anion resin. Various experiments were carried out by varying pH, temperature and volumetric flow rate of solution by employing a rig to study the kinetics of the ion exchange process. The rate constant (k) and maximum solid phase concentration of exchanged solute (q0) were calculated using the Thomson equation to scale up the purification process of industrial runoff of chromium(VI) from the tanning, photography and ceramic industry. Experimental optimization revealed that developed setup will remove chromium(VI) to a level of 5 mg/dm3 from 300 mg/dm3 in 40 000 dm3 of wastewater. To achieve the best results for the flow rate of 10 000 3 3/day, 12.03 kg of anionic resin were recommended by fixing the pH of the setup at 7.4 while maintaining the treatment temperature at 20 °C.
    Źródło:
    Environment Protection Engineering; 2019, 45, 1; 17-29
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic diversity of Brassica rapa germplasm of Khyber Pakhtunkhwa Pakistan revealed by molecular markers
    Autorzy:
    Ali, N.
    Ali, S.
    Khan, N.U.
    Jan, S.A.
    Rabbani, M.A.
    Hussain, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/12690092.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Pakistan
    plant breeding
    Brassica rapa
    germplasm
    genetic diversity
    plant genotype
    molecular marker
    SSR marker
    Opis:
    A total of 96 indigenous Brassica rapa accessions were collected from different locations of Khyber Pakhtunkhwa, Pakistan. Simple Sequence Repeats (SSR) markers were used to identify the most diverse genotypes among the collected lots. Twenty six (26) different SSR primers were used for (genetic) variability among collected genotypes. These primers were selected from literature based on their previous results. These primers produced 135 scorable bands of which 75 were polymorphic, with an average of 55.5% polymorphic loci, and reflected the broader genetic background of the collected genotypes. An average 2.88 polymorphic bands with an average PIC value of 0.49 was recorded. Unweighted Pair Group Method with Arithmetic Mean (UPGMA) divided all genotypes into three main groups. Group one contained three clusters, while group two and three had four and two clusters each. Based on the UPGMA dendrogram, genotypes collected from Kohat, Bannu, Swat and Haripur showed considerable amount of variation. From the present study, it is concluded that SSR markers can be proved as the best tool for the genetic variability of other local and exotic B. rapa genotypes.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 57-65
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Active Transient Sound Radiation Control from a Smart Piezocomposite Hollow Cylinder
    Autorzy:
    Hasheminejad, S. M.
    Rabbani, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/177572.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    active structural acoustic control (ASAC) thick cylindrical shells
    exact elasto-acoustic analysis
    time-domain solution
    intelligent system
    sound field attenuation
    Opis:
    The linear 3D piezoelasticity theory along with active damping control (ADC) strategy are applied for non-stationary vibroacoustic response suppression of a doubly fluid-loaded functionally graded piezolaminated (FGPM) composite hollow cylinder of infinite length under general time-varying excitations. The control gain parameters are identified and tuned using Genetic Algorithm (GA) with a multi-objective performance index that constrains the key elasto-acoustic system parameters and control voltage. The uncontrolled and controlled time response histories due to a pair of equal and opposite impulsive external point loads are calculated by means of Durbin’s numerical inverse Laplace transform algorithm. Numerical simulations demonstrate the superior (good) performance of the GA-optimized distributed active damping control system in effective attenuation of sound pressure transients radiated into the internal (external) acoustic space for two basic control configurations. Also, some interesting features of the transient fluid-structure interaction control problem are illustrated via proper 2D time domain images and animations of the 3D sound field. Limiting cases are considered and accuracy of the formulation is established with the aid of a commercial finite element package as well as comparisons with the current literature.
    Źródło:
    Archives of Acoustics; 2015, 40, 3; 359-381
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of TAT-signaling fusion system along with co-expression of GroEL/ES chaperones on secretory expression of somatropin
    Autorzy:
    Rabbani, M.
    Ghasemi, R.
    Bagherinejad, M.R.
    Jahanian, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2096995.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chaperone
    GroEL/ES
    human growth hormone
    somatropin
    TAT system
    Opis:
    Human growth hormone (somatropin) is one of the most widely used recombinant proteins that stimulates growth, cell reproduction, and cell regulation in humans. Synthetic production of this protein normally results in low yields and inclusion body formation. To overcome these difficulties, the production of somatropin along with two common signal peptides, namely TorA and SufI, in co-expression with a cytosolic chaperone, GroEL/ES, was evaluated in the present study. The target protein and the two signal sequences (TorA and SufI) were synthesized and cloned into an expression plasmid (pET-22) by using Nde l and Xho l endonucleases. The expression vector (pGro7) containing chaperone proteins (GroES/EL) and one of the expression vectors containing the signal sequence (and the target protein) were co-expressed in the BL21 DE3 expression host. The results showed that although some of the expressed proteins exit the cytoplasm and enter the periplasmic space, there is also an accumulation of proteins (probably as inclusion body) inside the cytoplasmic area. Western blot analysis showed that the inclusion of a signal sequence in the cassette containing the target protein could help to secrete the protein in the periplasmic space and culture media when compared with control groups. The result of these experiments show that the TAT secretion system promotes transportation of the target protein out of the cytoplasm. This secretory system completes folding of the protein structure and transfers the mature protein to the periplasmic space.
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2020, 101, 2; 101-108
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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