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您的检索式：作者名="Saima Awan"
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| 1 | Biochars reduce irrigation water sodium adsorption ratio显示文摘Irrigation water quality plays a vital role in sustaining crop productivity and feeding a growing world population.In many countries,continued agricultural water reuse can lead to greater water-soluble salt concentrations,and in particular Na;finding means by which irrigation water Na,and thus sodium adsorption ratios(SAR),can be reduced would reduce the rate at which soil sodification occurs.Four biochars,containing a variety of organic functional groups and electrochemistries,were examined for their potential to sorb and remove Na from simulated irrigation water,and subsequently reduce water SAR.Two batch experiments examined the role that wheat straw biochar,lodgepole pine biochar,Kentucky bluegrass biochar,and hemp biochar played in terms of sorbing sodium over time or application rate.Of the four biochars examined,hemp biochar had the lowest oxidation-reduction potential(ORP;~0-100 mV),sorbed the greatest Na amount(up to 923 mg kg^(−1)),and released Ca and Mg(up to 115 and 63 mg kg^(−1),respectively)into solution,all of which led to a significant reduction in water SAR(from 8.8 to 7.3;17% decrease).Sodium sorption onto hemp biochar better fit a Langmuir versus a Freundlich isotherm,yet followed a pseudo-second-order model better than a pseudo-first-order kinetic model.The data suggest that Na ions formed a monolayer on the hemp biochar surface,influenced by associations withπelectrons,but given time the Na ions may diffuse into biochar pores or more slowly interact with biochar-borneπelectrons.Hemp biochar shows promise in reducing the SAR of Na-impacted waters.Future investigations should focus on additional laboratory,greenhouse,and field trials with hemp biochar and other biochars designed to have similar or superior properties for sorbing excess irrigation water Na and improving crop growth. | Saima Awan James A.Ippolito J.L.Ullman Kamran Ansari Liqiang Cui A.A.Siyal | 2021 | Biochar2021，3，1： | 2 |
| 2 | The genomic landscape of oesophagogastric junctional adenocarcinoma显示文摘 | Irene Y Chong David Cunningham Louise J Barber James Campbell Lina Chen Iwanka Kozarewa Kerry Fenwick Ioannis Assiotis Sebastian Guettler Isaac Garcia‐Murillas Saima Awan Maryou Lambros Naureen Starling Andrew Wotherspoon Gordon Stamp David Gonzalez‐de‐Ca | 2013 | J Pathol2013，，3： | 1 |
| 3 | 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 |
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