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119篇 您的检索式:作者名="Hajar"
    题名 作者 年代 出处 被引量
1化学修饰多壁碳纳米管制备碳糊电极用于伏安法测定药物和尿液中的异丙肾上腺素(英文)显示文摘A carbon paste electrode with added multiwall carbon nanotubes chemically modified with N-(3,4-dihydroxyphenethyl)- 3,5-dinitrobenzamide was used as the electrochemical sensor for the determination of trace amounts of isoprenaline. The modified electrode showed good electrocatalytic activity for the anodic oxidation of isoprenaline, which was due to a substantial decrease in the anodic overpotential. Under the optimum conditions, measurements using square wave voltammetry had a linear range in the range of 0.3 to 125.0 μmol/L of isoprenaline and a detection limit of 0.1 μmol/L. The diffusion coefficient and kinetic parameters were determined using electrochemical methods. The relative standard deviation for seven successive assays of 1.0 and 20.0 μmol/L isoprenaline were 1.9% and 2.4%, respectively.This electrochemical sensor was successfully applied for the determination of isoprenaline in human urine and injection solution samples.Ali A.ENSAFI Hajar BAHRAMI Hassan KARIMI-MALEH Shadpour MALLAKPOUR 2012催化学报2012,33,12:6
2Developing a prediction model for customer churn from electronic banking services using data mining显示文摘Background:Given the importance of customers as the most valuable assets of organizations,customer retention seems to be an essential,basic requirement for any organization.Banks are no exception to this rule.The competitive atmosphere within which electronic banking services are provided by different banks increases the necessity of customer retention.Methods:Being based on existing information technologies which allow one to collect data from organizations’databases,data mining introduces a powerful tool for the extraction of knowledge from huge amounts of data.In this research,the decision tree technique was applied to build a model incorporating this knowledge.Results:The results represent the characteristics of churned customers.Conclusions:Bank managers can identify churners in future using the results of decision tree.They should be provide some strategies for customers whose features are getting more likely to churner’s features.Abbas Keramati Hajar Ghaneei Seyed Mohammad Mirmohammadi 2016Financial Innovation2016,2,1:5
3Ozone and ozone/hydrogen peroxide treatment to remove gemfibrozil and ibuprofen from treated sewage effluent: Factors influencing bromate formation显示文摘Reuse of treated sewage effluent is an important option to overcome water scarcity.Conventional wastewater treatment methods are inadequate for the removal of several persistent contaminants such as pharmaceuticals and personal care products(PPCPs).In this study the removal of ibuprofen and gemfibrozil by ozonation and ozone/hydrogen peroxide(O3/H2O2)advanced oxidation process(AOP),as well as the formation of bromate were investigated at different temperatures and pH values.Complete removal of gemfibrozil and a maximum of 80%ibuprofen removal were achieved using ozone dosage of 1.5 mg/L with O3:H2O2 ratio of 1:0.25 in the O3/H2O2 process.The effect of temperature on the removal efficiency of these two compounds was found to be negligible from 25 to 40ᵒC for both processes.pH effect from 6 to 9 was also found to be negligible for gemfibrozil removal,while ibuprofen had relatively lower removal by ozonation at pH 6 compared to higher pH values.Bromate formation was decreased to 0.012 mg/L when the pH was increased to 9.Increasing the temperature to 40ᵒC also resulted in less bromate formation which was the lowest value obtained in this study at 0.0102 mg/L.Addition of H2O2 did not affect the formation of bromate and in some cases it was found to be slightly higher compared with ozonation treatment.Hajar Farzaneh Kavithaa Loganathan Jayaprakash Saththasivam Gordon McKay 2020Emerging Contaminants2020,6,1:4
4利用Cu0/多壁碳纳米管纳米复合物修饰玻碳电极快速非酶法检测葡萄糖和果糖(英文)显示文摘A nonenzymatic electrochemical sensor for glucose and fructose was fabricated that contained a glassy carbon electrode modified with a copper oxide (CuO)/multiwalled carbon nanotube (MWCNT) nanocomposite. The electrochemical properties of the CuO/MWCNT‐modified glassy carbon electrode were investigated. Two distinguishable anodic peaks were observed around 0.30 and 0.44 V corresponding to the oxidation of glucose and fructose, respectively, at the surface of the modified electrode. The detection limits for glucose and fructose were both 0.04 mmol/L. The sensor was used to simultaneously determine the concentrations of glucose and fructose in hydrolyzed sucrose samples, and to measure glucose in blood serum samples, demonstrating its potential as a nonenzymatic carbohydrate sensor.Hajar SHEKARCHIZADEH Mahdi KADIVAR Ali A.ENSAFI 2013催化学报2013,34,6:3
5Clinical and epidemiological characteristics of norovirus gastroenteritis among hospitalized children in Lebanon显示文摘AIM To assess the burden of norovirus(No V) and to determine the diversity of circulating strains among hospitalized children in Lebanon. METHODS Stool samples were collected from children presenting with acute gastroenteritis to six major hospitals in Lebanon. A total of 739 eligible stool samples, testing negative for diarrhea caused by rotavirus as a possible viral pathogen, were collected between January 2011 and June 2013. A standardized questionnaire including demographic, epidemiological and clinical observations was used at the time of hospitalization of children presenting with diarrhea. Viral RNA was extracted from stool samples followed by reverse transcription polymerase chain reaction and nucleotide sequencing of a fragment of the viral protein 1 capsid gene. Multiple sequence alignments were carried out and phylogenetic trees were constructed using the MEGA 6 software.RESULTS Overall, 11.2% of stool samples collected from children aged < 5 years tested positive for No V genogroups Ⅰ(GⅠ) and Ⅱ(GⅡ). GⅡ accounted for 10.6% of the gastroenteritis cases with only five samples being positive for GⅠ(0.7%). The majority of hospitalized children showed symptoms of diarrhea, dehydration, vomiting and fever. Upon sequencing of positive samples and based on their clustering in the phylogenetic tree, 4/5 of GⅠ gastroenteritis cases were designated GⅠ.3 and one case as GⅠ.4. GⅡ.4 was predominantly detected in stool of our study participants(68%). We report a JB-15/KOR/2008 GⅡ.4 Apeldoorn 2008-like variant strain circulating in 2011; this strain was replaced between 2012 and 2013 by a variant sharing homology with the Sydney/NSW0514/2012/AUS GⅡ.4 Sydney 2012 and Sydney 2012/FRA GⅡ.4 strains. We also report the co-circulation of non-GⅡ.4 genotypes among hospitalized children. Our data show that No V gastroenteritis can occur throughout the year with the highest number of cases detected during the hot months.CONCLUSION The majority of No V-associated viral gastroenteritis cases among our participants are attributable to GⅡ.4, which is compatible with results reported worldwide.Nada M Melhem Hassan Zaraket Khalil Kreidieh Zeinab Ali Moza Hammadi Soha Ghanem Farah Hajar Amjad Haidar Adlette Inati Mariam Rajab Hassan Fakhouri Bassam Ghanem Ghassan Baasiri Ghassan Dbaibo 2016World Journal of Gastroenterology2016,22,48:3
6Vascular Endothelial Cells Respond to A Spacial Gradients in Fluid Shear Stress by Enhanced Activation in Regions Predisposed to Atherosclerotic Lesion Formation显示文摘Hajar L Evans A Chen M 2000Proc Natl Acad Sci USA(S0027-8424)2000,97,:1
7A systematic reviewof topical corticosteroid withdrawal steroid addiction')in patients with atopic dermatitis and other dermatoses显示文摘Hajar T Leshem YA Hanifin JAA 2015J Am Acad Dermatol2015,72,3:1
8A systematic re- view of topical corticosteroid withdrawal (' steroid addic- tion') in patients with atopie dermatitis and other dermato- ses 显示文摘Hajar T Leshem Y A Hanifin J M 2015J Am Acad Dermatol2015,72,3:1
9Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerules - cens显示文摘Baker A J M Reeves R D Hajar A S M 1994New Phytol1994,127,:1
10Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens J & C (Brassicacease)显示文摘Baker A J M Reeves R D Hajar A S M 1994New Phytol1994,127,:1
11Numerical Study of Laminar Mixed Convection in a Vertical Saturated Porous Enclosure: the Combined Effect of Double Diffusion and Evaporation显示文摘Asbik M Sadki H Hajar M 2002Numerical Heat Transfer2002,41,4:1
12Quality profile of litehi (Litchi chinensis )eultivars from India and effect of radiation processing 显示文摘Hajare S N Saxena S Kumar S 2010Radiation Physics & Chemistry2010,79,9:1
13Heavy metalaccumulation and tolence in British populations of the metallophyte Thlaspi caerulenscene J&C Presl (Brassicaceae)显示文摘BAKER A J M REEVES R D HAJAR A S M 1994New Phytol1994,127,:1
14Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerulescens 显示文摘Baker A J M Reeves R D Hajar A S M 1994New Phytol1994,127,:1
15Heavy metal accumulation and tolerance in British populations of the metallophyte Thlaspi caerules J Presl (Brassicaceae) 显示文摘Baker A J M Reeves R D Hajar A S M 1994New Phytol1994,127,:1
16Quality profile of litchi (Litchi chinensis) cuhivars from India and effect of radiation processing显示文摘Hajare Sachin N Sudhanshu Saxena Sanjeev Kumar 2010Radiation Physics and Chemistry2010,3,14:1
17A survey of incidental ocular trauma by pencil and pen显示文摘AIM:To determine characteristic features of ocular trauma resulted from self-trauma by writing instruments among pediatric population.METHODS:Thirty-six children who suffered from selfinflicted ocular trauma with a writing instrument were included in this prospective cross-sectional study.RESULTS:The mean age was 5.6±2.7y with male:female ratio of 1.77.The right eye was involved two times more than the left eye.The superomedial(55.5%)and inferomedial(30.6%)quadrants were the most common sites of injury.The leading culprit was colored pencils(44.4%).During surgical exploration,no foreign body(FB)was found in 25(69.4%)patients while an FB was found in 11(30.5%)patients.Brain injury was present in two patients(5.6%)and only in superomedial quadrant injuries.Zone 1 was the most common site for ocular trauma associated with penetrating injury.The mean ocular trauma score(OTS)in penetrating injuries was 3.8±1.2.The best corrected visual acuity(BCVA)was 0.3±0.6 upon admittance and 0.08±0.21 after one year.The final BCVA was significantly correlated with the entrance site,better final BCVA was found in nasal entrance site(P<0.05).CONCLUSION:The ophthalmologists should keep a high index of suspicion to rule out penetrating eye injuries related to writing instruments in a young uncooperative child.Brain injury is a life-threatening event that should be ruled out by appropriate imaging.Medial canthal area as the most common site needs an especial attention in writing instrument injuries.Seyed Ali Tabatabaei Mohammad Soleimani Morteza Naderan Aliasghar Ahmadraji Mohammad Bagher Rajabi Hajar Jafari Mona Safizade 2018International Journal of Ophthalmology(English edition)2018,11,10:1
18Induction of ap- optosis in human cancer cells by a Bacillus lipopeptide bacillo- mycin D显示文摘Hajare SN Subramanian M Gautam S 2013Biochimie2013,95,9:1
19Calculation of the structural properties of a strange quark star in the presence of a strong magnetic field using a density dependent bag constant显示文摘We have calculated the structural properties of a strange quark star with a static model in the presence of a strong magnetic field. To this end, we use the MIT bag model with a density dependent bag constant. To parameterize the density dependence of the bag constant, we have used our results for the lowest order constrained variational calculation of the asymmetric nuclear matter. By calculating the equation of state of strange quark matter, we have shown that the pressure of this system increases by increasing both density and magnetic field. Finally, we have investigated the effect of density dependence of the bag constant on the structural properties of a strange quark star.Gholam Hossein Bordbar Hajar Bahri Fatemeh Kayanikhoo 2012Research in Astronomy and Astrophysics2012,12,9:1
20Multiple mechanisms underlying ac- quired resistance to taxanes in selected docetaxel-resistant MCF-7 breast cancer cells显示文摘Wang H Vo T Hajar A 2014BMC Cancer2014,14,37:1
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