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Wyszukujesz frazę "Mahmood, M.S." wg kryterium: Autor


Wyświetlanie 1-10 z 10
Tytuł:
Utilization of Chlorella vulgaris after the Extraction Process in Wastewater Treatment as a Biosorption Material for Ciprofloxacin Removal
Autorzy:
Al-Mashhadani, Enass S. M.
Al-Mashhadani, Mahmood K. H.
Powiązania:
https://bibliotekanauki.pl/articles/24201657.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
microalgae
Chlorella vulgaris
biomass
adsorption
wastewater treatment
ciprofloxacin
Opis:
Potentially negative environmental and human health effects have led to pharmaceutical chemicals,which are labeled as a new class of environmental contaminants. Adsorption is one of the most appealing choices to remove that pharmaceutical waste in recent years. However, the environmental limitations of the adsorbent material are an obstacle to the development of this process. The current study suggested the remaining Chlorella vulgaris biomass, after the extraction process of the biomaterials, to be a bio-absorption material in removing the Ciprofloxacin from the hospital wastewater. The preparation and characterization of the suggested adsorbent through FTIR analysis, and scanning electron microscopy, coupled with energy-dispersive X-ray spectroscopy and X-ray diffraction, were present in the current study. Several functional groups (such as carboxylic, amines, hydroxyls, and amides) were observed to aid the adsorption process. After the extraction process, the results showed a growth in the peaks, indicating an increase in functional groups, particularly the -O.H. and -N.H. groups, while having changed toward lower energy after binding with CIP atoms, as well as an increase in surface area from 2.3723 to 3.6224 m2/g. The XRD was shown to be compatible with the EDX test, which both demonstrated a decrease in carbon element concentration due to the deconstruction process. The effects of Ciprofloxacin bio-sorption variables, including contact time, initial Ciprofloxacin concentration, pH, and adsorbent dosage, were adopted as a parametric study. The maximum adsorption capacity was recorded at pH 7 with an adsorbent dose of 2.75 g/L; after 120 minutes, the data show that 89.9% of Ciprofloxacin has been adsorption onto the extracted biomass.
Źródło:
Journal of Ecological Engineering; 2023, 24, 4; 1--15
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoextraction of Cr by maize (Zea mays L.) : the role of plant growth promoting endophyte and citric acid under polluted soil
Autorzy:
Ali, J.
Mahmood, T.
Hayat, K.
Afridi, M. S.
Ali, F.
Chaudhary, H. J.
Powiązania:
https://bibliotekanauki.pl/articles/204568.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
maize
phytoextraction
chromium
citric acid
Burkholderia vietnamiensis
Opis:
High chromium (Cr) toxicity has turned into a serious environmental concern. Cr contaminated agronomic soils negatively affect the growth and yield of crops. Current research was conducted to enhance the phytoextraction potential of maize by using Burkholderia vietnamiensis and citric acid (CA). Plants were subjected to three concentrations of Cr (0.86, 350, and 500 ppm). A pot experiment was conducted under greenhouse conditions with completely randomized design (CRD). After 72 days of experiment, plants were harvested to analyze the morphological and biochemical attributes of soil, bacteria and plant. Results revealed that plant fresh, dry biomass, root, shoot length and chlorophyll contents significantly increased by 56%, 50%, 58%, 78% and 60%, respectively, at 500 ppm Cr concentration in combine treatment of B. vietnamiensis and CA. Maize plants treated with both B. vietnamiensis and CA significantly increased the bioaccumulation (BA) of Cr up to 50% and translocation factor (TF) by 31%. Furthermore, superoxide dismutase (SOD), proline and peroxidase dismutase (POD) activities in leaves were markedly increased by 30%, 42% and 15%, respectively, when treated with CA. Current study reveals that exogenous co-application of B. vietnamiensis + CA enhance plant growth by alleviating heavy metal stress and accelerate the phytoextraction of Cr. Taking into account the heavy metal tolerance and accumulation capacity, Zea mays is suitable for phytoremediation of contaminated soils in combination with B. vietnamiensis and CA.
Źródło:
Archives of Environmental Protection; 2018, 44, 2; 73-82
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative evaluation of different techniques for herniorrhaphy in calves
Autorzy:
Fatima, A.
Arif Khan, M.
Aslam, S.
Ashraf, K.
Khalid Mahmood, A.
Asif, M.
Shah, S.
Hussain, N.
Powiązania:
https://bibliotekanauki.pl/articles/16539145.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
calves
mesh application
suture material
umbilical hernia
Opis:
Umbilical hernia is one of the most common problems in young calves. This problem occurs in dairy sector as well as in the local farmers. Present study was conducted to compare outcomes of four different techniques of herniorrhaphy. Twenty four young calves (n=24) were divided in 4 groups (A, B, C, and D) which underwent four different surgical techniques. Group A underwent vicryl plus suture material and pants-over-west technique, Group B underwent mesh application with Dexon suture material by using simple interrupted suture pattern, Group C underwent closed method with Nylon No. 3 suture material by using vertical mattress suture pattern and Group D underwent clamp application method with Silk No. 2 suture material by using simple interrupted suture pattern. The result showed that mesh application method was comparatively better with respect to feed intake, body weight gain and healing time. There was no reoccurrence with non-significant hematological changes (p≤0.05). It is concluded that mesh application method is safer than other three techniques and there are no systemic effects of this surgical intervention on calves’ health.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 2; 207-212
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel lignocellulosic wastes for comparative adsorption of Cr(VI): equilibrium kinetics and thermodynamic studies
Autorzy:
Haroon, H.
Gardazi, S. M. H.
Butt, T. A.
Pervez, A.
Mahmood, Q.
Bilal, M.
Powiązania:
https://bibliotekanauki.pl/articles/778473.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
chromium VI
equilibrium kinetics
lignocellulosic waste adsorbents
thermodynamics
Opis:
Cr(VI) adsorption was studied for abundantly available low-cost lignocellulosic adsorbents in Pakistan namely, tobacco stalks (TS), white cedar stem (WCS) and eucalyptus bark (EB). Several process variables like contact time, adsorbent dose, pH, metal concentration, particle size and temperature were optimized in batch mode. EB showed high Cr(VI) adsorption of 63.66% followed by WCS 62% and TS 57% at pH 2, which is higher than most of the reported literature. Langmuir isotherm (R2  = 0.999) was well fitted into the equilibrium Cr(VI) data of EB, suggesting homogeneous active sites and monolayer coverage of Cr(VI) onto the EB surface. Freundlich (R2  = 0.9982) isotherm was better fitted to the equilibrium data of TS and WCS, revealing the adsorption sites with heterogeneous energy distribution and multilayer Cr(VI) adsorption. Moreover, the Cr(VI) adsorption of studied adsorbents followed the pseudo-second order kinetic model. Thermodynamic properties were investigated in two temperature ranges, i.e., T1  (303–313 K) and T2  (313–323 K). TS and EB showed the exothermic at T1 and endothermic reactions at T2 with entropy controlled adsorption at the solid-liquid interface, and WCS exhibited an opposite thermal trend with decreasing disorderness at solid-liquid interface as temperature rises. Gibbs free energy (ΔG>0) confirmed the non-spontaneous adsorption process for all studied adsorbents.
Źródło:
Polish Journal of Chemical Technology; 2017, 19, 2; 6-15
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heterologous expression of hemagglutinin-neuraminidase protein from Newcastle disease virus strain AF2240 in Centella asiatica
Autorzy:
Lai, K.S.
Yusoff, K.
Mahmood, M.
Powiązania:
https://bibliotekanauki.pl/articles/19401.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
We explored the use of the medicinally important plant Centella asiatica for expression of hemagglutinin-neuraminidase (HN) protein of Newcastle disease virus (NDV) strain AF2240. HN protein is the principal target for subunit vaccine development against NDV. The full-length HN gene was cloned into a plant expression construct driven by the CaMV 35S promoter and C-terminal fusion of green fluorescence protein (GFP) as reporter system. The recombinant expression construct was transformed via particle bombardment into C. asiatica callus. Transformants were screened using GFP and selected on MS medium supplemented with 15 mg/l hygromycin. The ~1.8 kb HN mRNA transcript was detected on the putative transformants using RT-PCR. The presence of HN protein expression was further confirmed through dot blot analysis using anti-NDV chicken serum. Here we report, for the first time, the use of a novel medicinal plant as a new platform for HN protein expression.
Źródło:
Acta Biologica Cracoviensia. Series Botanica; 2012, 54, 1
0001-5296
Pojawia się w:
Acta Biologica Cracoviensia. Series Botanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An investigation of 2013 Mw 7.7 Awaran earthquake, Pakistan
Autorzy:
Mahmood, I.
Iqbal, M.F.
Mughal, M.R.
Shahzad, M.I.
Tariq, S.
Ullah, K.
Powiązania:
https://bibliotekanauki.pl/articles/11915.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Źródło:
International Letters of Natural Sciences; 2017, 61
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ranking criteria for assessment of municipal solid waste dumping sites
Autorzy:
Mahmood, K.
Batool, S. A.
Chaudhary, M. N.
Ul-Haq, Z.
Powiązania:
https://bibliotekanauki.pl/articles/205345.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
MSW dumping facility
hazard assessment
ranking criteria
geographic information system (GIS)
remote
sensing
Opis:
Priority wise channelization of resources is the key to successful environmental management, especially when funds are limited. The study in hand has successfully developed an algorithmic criterion to compare hazardous effects of Municipal Solid Waste (MSW) dumping sites quantitatively. It is a Multi Criteria Analysis (MCA) that has made use of the scaling function to normalize the data values, Analytical Hierarchy Process (AHP) for assigning weights to input parameters showing their relevant importance, and Weighted Linear Combination (WLC) for aggregating the normalized scores. Input parameters have been divided into three classes namely Resident’s Concerns, Groundwater Vulnerability and Surface Facilities. Remote Sensing data and GIS analysis were used to prepare most of the input data. To elaborate the idea, four dumpsites have been chosen as case study, namely Old-FSD, New-FSD, Saggian and Mahmood Booti. The comparison has been made first at class levels and then class scores have been aggregated into environmental normalized index for environmental impact ranking. The hierarchy of goodness found for the selected sites is New-FSD > Old-FSD > Mahmood Booti > Saggian with comparative scores of goodness to environment as 36.67, 28.43, 21.26 and 13.63 respectively. Flexibility of proposed model to adjust any number of classes and parameters in one class will be very helpful for developing world where availability of data is the biggest hurdle in research based environmental sustainability planning. The model can be run even without purchasing satellite data and GIS software, with little inaccuracy, using imagery and measurement tools provided by Google Earth.
Źródło:
Archives of Environmental Protection; 2017, 43, 1; 95-105
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First principle analysis of electronic, optical and thermoelectric characteristics of XBiO3 (X = Al, Ga, In) perovskites
Autorzy:
Mahmood, Q.
Rouf, S. A.
Algrafy, E.
Murtaza, G.
Ramay, S. M.
Mahmood, A.
Powiązania:
https://bibliotekanauki.pl/articles/1818225.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
density functional theory
structural stability
optoelectronics
thermoelectric applications
indirect band gap semiconductors
Opis:
The perovskites XBiO3 (X = Al, Ga, In) have been studied in terms of mechanical, optical and thermoelectric behavior for energy harvesting application. Density functional theory is applied to study electronic, optical and thermoelectric properties of the studied materials. Structural, mechanical and thermodynamic stabilities are confirmed from the tolerance factor, Born mechanical stability and formation energy/specific heat capacity. Poisson and Plough ratios show the studied materials are ductile and have ability to withstand pressure. Band structure analysis shows the indirect band gap 3.0/2.1/1.0 eV for ABO/GBO/IBO. A complete set of optical spectra is reported by dielectric constants, refractive index, optical conduction, absorption of light and optical loss energy. Shifting of maximum absorption band to visible region increases the potential of perovskites XBiO3. Transport characteristics are also investigated by electrical conductivity, Seebeck coefficient and figure of merit.
Źródło:
Opto-Electronics Review; 2020, 28, 1; 8--14
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Study of Some Electrical Properties of PVA-Ni(NO3)2 Composites
Autorzy:
Salman, S.A.
Bakr, N. A.
Mahmood, M.H.
Powiązania:
https://bibliotekanauki.pl/articles/411873.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
polyvinyl alcohol
Casting method
Electrical properties
Composites
Opis:
The aim of this paper is to prepare and study the (D.C.) electrical conductivity of (PVA-Ni(NO₃)₂) composites at different temperatures. For that purpose, PVA films with Ni(NO₃)₂ salt additive were prepared with different concentrations 2, 4, 6, 8 and 10 wt. % and with thickness of 45μm by using casting technique. The experimental results for PVA-Ni(NO₃)₂) films show that the (D.C.) electrical conductivity increased with increasing the filler content and the temperature, and the activation energy was decreased with increasing the filler content.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2015, 40; 36-42
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seroprevalence, associated risk factors and clinico-pathological studies of buffalopox disease in various regions of Punjab province, Pakistan
Autorzy:
Usmani, M.W.
Rizvi, F.
Khatoon, A.
Mahmood, M.S.
Powiązania:
https://bibliotekanauki.pl/articles/16539103.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
seropositive
single radial hemolysis
scab samples
PCR
C18L gene
leukocytes
Opis:
Buffalopox (BPX) is a highly contagious disease that causes high morbidity and production losses in buffaloes. During this study, seroprevalence, effect of various associated risk factors, and pathological studies of BPX were recorded in the Punjab province. A total of 97 blood samples and 63 scabs were collected from clinically pox suspected buffaloes. Serum was harvested to perform single radial hemolysis to assess the seroprevalence, and scabs were subjected to PCR for BPX virus confirmation. Results revealed that, animal demographics and environmental associated factors showed significant effect (p<0.05,1<R2>0) on BPX occurrence. The overall BPX seroprevalence was recorded 4.18% in the Punjab province. The BPX was recorded 5.48% in Nili Ravi breed during winter (7.42%), aged 5-7 years (7.46%) under loose housing (5.51%) in the Faisalabad region (8.03%). Further, BPX was 5.37% in pregnant, 6.86% pregnant milking buffaloes during the 3rd lactation period (7.28%) in dairy herds (5.20%). The BPX was 5.22% in non-vaccinated buffaloes where multiple animals were reared together (4.99%) in the herds having 21-30 total number of animals. A total of 49 scab samples were found positive for the BPX virus via PCR with C18L gene amplification. Grossly, inflammatory lesions with pits in the center and wart-like nodules were seen on teats and udder of buffaloes. Increased leukocytes, especially neutrophils and lymphocytes, were seen in the blood of the infected animals. These results provide a broader window to understand the effect of associated risk factors, strengthen the diagnostic aid, and to contain the current spread of BPX in Pakistan to safeguard large ruminant-based livelihood.
Źródło:
Polish Journal of Veterinary Sciences; 2022, 25, 1; 137-147
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-10 z 10

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