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| 1 | Effects of bismuth on structural and dielectric properties of cobalt-cadmium spinel ferrites fabricated via micro-emulsion route显示文摘Spinel ferrites have a significant role in high-tech applications.In the present work nano-crystalline ferrites having general formula Co0.5Cd0.5BixFe2-xO4 with(x=0.0,0.05,0.1,0.15,0.2,and 0.25)are synthesized via micro-emulsion route.Powder x-ray diffraction(XRD)studies discover the FCC spinel structure.Crystalline size is calculated in a range of 11 nm-15 nm.Lattice parameter calculations are reduced due to its substitution which leads to the exchange of large ionic radius of Fe^3+for small ionic radius of Bi^3+.The x-ray density is analyzed to increase with doping.Fourier transform infrared spectroscopy(FTIR)is performed to analyze absorption band spectra.The two absorption bands are observed in a range of 400 cm^-1-600 cm^-1,and they are the characteristic feature of spinel structure.Thermo-gravimetric analysis(TGA)reveals the total weight loss of nearly 1.98%.Dielectric analysis is carried out by impedance analyzer in a frequency span from 1 MHz to 3 GHz by using the Maxwell Wagner model.Dielectric studies reveal the decrease of dielectric parameters.The alternating current(AC)conductivity exhibits a plane behavior in a low frequency range and it increases with the applied frequency increasing.This is attributed to the grain effects in a high frequency range or may be due to the reduction of porosity.Real and imaginary part of impedance show the decreasing trend which corresponds to the grain boundary action.The imaginary modulus shows the occurrence of peak that helps to understand the interfacial polarization.Cole-Cole graph shows a single semicircle which confirms that the conduction mechanism is due to the grain boundaries at low frequency.Dielectric studies reveal the applicability of these ferrites in high frequency equipment,microwave applications,high storage media,and semiconductor devices. | Furhaj Ahmed Sheikh Muhammad Khalid Muhammad Shahzad Shifa H M Noor ul Huda Khan Asghar Sameen Aslam Ayesha Perveen Jalil ur Rehman Muhammad Azhar Khan Zaheer Abbas Gilani | 2019 | Chinese Physics B2019，28，8： | 1 |
| 2 | Succinate-bonded pullulan: An efficient and reusable super-sorbent for cadmium-uptake from spiked high-hardness groundwater显示文摘Chemically modified pullulan was evaluated for its sorption efficiency and selectivity to remove cadmium(Cd) from spiked high-hardness groundwater(GW). Pullulan esterified with succinic anhydride using dimethylaminopyridine showed a fairly high degree of substitution value as confirmed by1 H NMR spectroscopy. Pullulan succinate(Pull-Suc) was converted into the sodium salt(Pull-Suc-Na). The effect of contact time(5–200 min) and p H(2–8) on Cd-uptake by the sorbent(Pull-Suc-Na) was investigated. The sorbent showed more than 90% Cd-removal in first 15 min from distilled water(DW) and GW solution,respectively. Comparison of Pull-Suc-Na with other polysaccharidal sorbents suggested its high efficiency(DW 476.2 mg/g and GW 454.5 mg/g) and selectivity for the removal of Cd by an ion exchange mechanism, which is further supported by the negative Gibbs free energy values calculated from Langmuir isotherms. A Langmuir isotherm kinetic model provided the best fit for the sorption of Cd using Pull-Suc-Na. The sorbent showed a negligible decrease in Cd-uptake over three regeneration cycles. The thermal stability testing of the sorbents indicated that Pull-Suc-Na(sorbent) is more stable than Pull-Suc. | Azhar Abbas Muhammad Ajaz Hussain Muhammad Amin Muhammad Sher Muhammad Nawaz Tahir Wolfgang Tremel | 2015 | Journal of Environmental Sciences2015，27，11： | 1 |
| 3 | Assessment of surface water quality of selected estuaries of Malaysia: multivariate statistical techniques显示文摘 | Abbas F. M. Alkarkhi Anees Ahmad Azhar Mat Easa | 2009 | The Environmentalist2009，，3： | 1 |
| 4 | Comparing physicochemical properties of banana pulp and peel flours prepared from green and ripe fruits显示文摘 | Abbas F.M. Alkarkhi Saifullah bin Ramli Yeoh Shin Yong Azhar Mat Easa | 2011 | Food Chemistry2011，，2： | 1 |
| 5 | Comparing biosorbent ability of modified citrus and durian rind pectin显示文摘 | Wai Wong Weng A1 Karkhi Abbas F M Easa Azhar Mat | 2010 | Carbohydrate Polymers2010，79，3： | 1 |
| 6 | Antioxidant activity and phenolic content of various date palm (Phoenix dactylifera)frtfits from Iran显示文摘 | FOROOGH B ABBAS F M A AZHAR M E | 2008 | Food Chemistry2008，107，4： | 1 |
| 7 | Antioxidant activity and phenolic content of various date palm (Phoenix dactylifera) fruits from Iran显示文摘 | Biglari F Alksrkhi Abbas F M Azhar M E | 2008 | Food chemistry2008，107，4： | 1 |
| 8 | Antioxidant activity and phenolic content of various date palm (Phoenix dactylifera) fruits from Iran显示文摘 | FOROOGH B ABBAS F M AZHAR M E | 2008 | Food Chemistry2008，107，： | 1 |
| 9 | Helicobacter pylori outer membrane protein Q genotypes and their susceptibility to antiadhesive phytotherapeutic agents显示文摘OBJECTIVE: Helicobacter pylori is a Gram-negative organism. Its outer membrane protein Q(Hop Q) mediates host-pathogen interactions; Hop Q genotypes 1 and 2 are found associating with gastroduodenal pathologies. The authors measured the anti-adhesion effects of the extracts of Abelmoschus esculentus, Zingiber officinale, Trachyspermum ammi, Glycyrrhiza glabra, Curcuma longa and Capsicum annum against Hop Q genotypes and H. pylori cytotoxin-associated gene A(Cag A).METHODS: DNA was extracted by polymerase chain reaction of the Hop Q genotypes(i.e., type 1, type 2 and Cag A) from 115 H. pylori strains. The effect of the extracts from selected dietary ingredients was determined using a gastric adenocarcinoma cell line and a quantitative DNA fragmentation assay. The anti-adhesive effect of these extracts on H. pylori was tested using an anti-adhesion analysis.RESULTS: C. annum, C. longa and A. esculentus showed prominent anti-adhesion effects with resultant values of 17.3% ± 2.9%, 14.6% ± 3.7%, 13.8% ± 3.6%, respectively, against Hop Q type 1 and 13.1% ± 1.7%, 12.1% ± 2%, 11.1% ± 1.6%, respectively, against Hop Q type 2. C. longa(93%), C. annum(89%) and A. esculentus(75%) had better anti-adhesive activity against H. pylori with Hop Q type 1 compared to Hop Q type 2 with respective values of 70%, 64% and 51%. Extracts of C. annum(14.7% ± 4.1%), A. esculentus(12.3% ± 4.1%) and Z. officinale(8.4% ± 2.8%) had an anti-adhesion effect against Cag A-positive H. pylori strains compared to Cag A-negative strains. | Javed Yakoob Zaigham Abbas Malik Hassan Mehmood Kanwal Tariq Saima Azhar Saleem Safia Awan Abdul Malik Saeed Hamid Rustam Khan Wasim Jafri | 2017 | Journal of Integrative Medicine2017，15，5： | 0 |
| 10 | Gutmicrobiome modulation:Ancillary effects of inorganic nanoparticles on gut microflora显示文摘The association of gut microflora and human health is being increasingly recognized,and the impact of gut microflora on the host is well characterized,including the body’s energy metabolism and immune system maintenance.Several human diseases,including metabolic,autoimmune,obesity,hypothyroidism,and intestinal disorders,are closely associated with gut dysbiosis.Inorganic nanoparticles(NPs)are extensively utilized in numerous fields due to their distinctive,attractive physicochemical properties.Estimation of the potential impacts of NPs,with a high number of microorganisms inside the human body(microbiota)and its genomes(microbiome),represents one of the most important aspects of nano-toxicology.This review article aims to provide information on the association of gut microflora alterations to diseases and describe the impacts of various inorganic NPs,including silver,zinc,selenium,titania,silicon,and copper,on gut microflora.Research on the effect of inorganic NPs on gut microflora of animal models and the poultry industry is reviewed.The response of pathogenic Enterobacter species to inorganic NPs has been expounded in detail.This review also highlights the need to focus on the ancillary effects of various inorganic NPs on gut microflora to expedite the suitable advancement of these particles for future use.Finally,the key opportunistic areas for the application of nanotechnology are underlined to manipulate the microbiome of gut dysbiosis,provide an overview,and address potential challenges and our perspective on this evolving field. | SEHRISH ABBAS BUSHRA UZAIR MAISRA AZHAR BUTT FARID MENAA BARKAT A.KHAN | 2023 | BIOCELL2023，47，2： | 0 |
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