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1Ag recovery from copper anode slime by acid leaching at atmospheric pressure to synthesize silver nanoparticles显示文摘In this paper, recovery of silver from anode slime of Sarcheshmeh copper complex in Iran and subsequent synthesis of silver nanoparticles from leaching solution is investigated. Sarcheshmeh anode slime is mainly consisted of Cu, Ag, Pb and Se. Amount of Ag in the considered anode slime was 5.4%(by weight).The goal was to recover as much as possible Ag from anode slime at atmospheric pressure to synthesize Ag nanoparticles. Therefore, acid leaching was used for this purpose. The anode slime was leached with sulfuric and nitric acid from room to 90 °C at different acid concentrations and the run which yielded the most recovery of Ag was selected for Ag nanoparticles synthesis. At this condition, Cu, Pb and Se are leached as well as Ag. To separate Ag from leach solution HCl was added and silver was precipitated as AgCl which were then dissolved by ammonia solution. The Ag nanoparticles are synthesized from this solution by chemical reduction method by aid of sodium borohydride in the presence of PVP and PEG as stabilizers. The synthesized Ag nanoparticles showed a peak of 394 nm in UV–vis spectrum and TEM images showed a rather uniform Ag nanoparticles of 12 nm.Atefeh Khaleghi Sattar Ghader Dariush Afzali 2014International Journal of Mining Science and Technology2014,24,2:7
2多壁碳管/二氧化钛改性棉织物及其自清洁和抗紫外性能(英文)显示文摘以丁二酸为交联剂,采用纳米TiO2和多壁碳管对棉织物进行改性。通过暴露于紫外和阳光照射,分析Direct Green6浓度的减少来评价改性织物的光催化自洁性能。探讨样品的紫外吸收、耐磨性与扩张强度。结果表明,在紫外和阳光照射下,经纳米TiO2和多壁碳管处理后的棉织物能有效提高Direct Green 6的光降解效率。改性织物的耐麿性和抗紫外性能提高,抗张强度略降低。Direct Green 6光降解效率的提高归因于电子空穴对重组的减少及由TiO2和多壁碳管产生协同作用而使吸收光的增加。Loghman Karimi Salar Zohood Atefeh Amini 2014新型炭材料2014,29,5:7
3以四丁铵六钨酸盐为可重复使用非均相催化剂无溶剂合成1,8-二氧十氢吖啶(英文)显示文摘Tetrabutylammonium hexatungstate,[TBA]2[W6O19],has been used as an efficient,inexpensive,and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by the reaction of dimedone with aromatic or aliphatic aldehydes in the presence of a nitrogen source(ammonium acetate or aromatic amines) under neat conditions.There are several advantages to the current process over the standard procedures available in the literature,including shorter reaction times(7-14 min),higher yields,facile work-up,and minimal environmental impact.Furthermore,the catalyst can be conveniently recovered and reused.Abolghasem DAVOODNIA Atefeh ZARE-BIDAKI Hossein BEHMADI 2012催化学报2012,33,11:5
4Effects of aromatherapy with Rosa damascena on nulliparous women's pain and anxiety of labor during first stage of labor显示文摘Background: Reducing labor pain and anxiety is one of the most important goals of maternity care.Objective: This study aimed to assess the effects of aromatherapy with Rosa damascena on pain and anxiety in the first stage of labor among nulliparous women.Design, setting, participants and interventions: This was a randomized clinical trial of 110 nulliparous women. The eligible participants were randomly assigned to two groups of aromatherapy and control in an Iranian maternity hospital. The participants received 0.08 m L of Rosa damascena essence in the aromatherapy group and 0.08 m L of normal saline in the control group, every 30 min. Pain was measured 3 times, once each at three stages of cervical dilation(4–5, 6–7, and 8–10 cm). Anxiety was measured twice,once each at two stages of cervical dilation(4–7 and 8–10 cm). The tools for data collection were the Spielberger anxiety questionnaire, numerical pain rating scale, demographic and obstetric questionnaire,and an observational checklist. Data analyses included the t-test, Mann–Whitney U test and Chi-square test.Main outcome measures: Severity of labor pain and severity of anxiety were used as primary outcome measures. Labor and delivery characteristics(including number of contractions, duration of contractions in second stage, Bishop score, augmentation by oxytocin, Apgar score, and mode of delivery), demographic characteristics, and fertility information were used as secondary outcome measures.Results: Pain severity in the group receiving aromatherapy with R. damascena was significantly lower than in the control group after treatment at each pain assessment(cervical dilation of 4–5, 6–7, and8–10 cm; P < 0.05). Anxiety levels were also significantly lower in the treatment group than in the control group after treatment at each time of measurement(cervical dilation of 4–7 and 8–10 cm; P < 0.05).Conclusion: Aromatherapy with R. damascena reduced the severity of pain and anxiety in the first stage of labor. Aromatherapy with R. damascena is a convenient and effective method for pain and anxiety reduction during the first stage of labor.Sepideh Hamdamian Soheila Nazarpour Masoumeh Simbar Sepideh Hajian Faraz Mojab Atefeh Talebi 2018Journal of Integrative Medicine2018,16,2:5
5Interleukin-12 as a Genetic Adjuvant Enhances Hepatitis C Virus NS3 DNA Vaccine Immunogenicity显示文摘Hepatitis C virus (HCV) chronic infection is a worldwide health problem, and numerous efforts have been invested to develop novel vaccines. An efficient vaccine requires broad immune response induction against viral proteins. To achieve this goal, we constructed a DNA vaccine expressing nonstructural 3 (NS3) gene (pcDNA3.1-HCV-NS3) and assessed the immune response in C57BL/6 mice. In this study, the NS3 gene was amplified with a nested-reverse transcriptase-polymerase chain reaction (RT-PCR) method using sera of HCV-infected patients with genotype 1a. The resulting NS3 gene was subcloned into a pcDNA3.1 eukaryotic expression vector, and gene expression was detected by western blot. The resultant DNA vaccine was co-administered with interleukin-12 (IL-12) as an adjuvant to female C57BL/6 mice. After the final immunizations, lymphocyte proliferation, cytotoxicity, and cytokine levels were assessed to measure immune responses. Our data suggest that co-administration of HCV NS3 DNA vaccine with IL-12 induces production of significant levels of both IL-4 and interferon (IFN)-γ (p<0.05). Cytotoxicity and lymphocyte proliferation responses of vaccinated mice were significantly increased compared to control (p<0.05). Collectively, our results demonstrated that co-administration of HCV NS3 and IL-12 displayed strong immunogenicity in a murine model.Malihe Naderi Atefeh Saeedi Abdolvahab Moradi Mishar Kleshadi Mohammad Reza Zolfaghari Ali Gorji Amir Ghaemi 2013Virologica Sinica2013,28,3:5
6Factors influencing pre-hospital delay among patients with acute myocardial infarction in Iran显示文摘Maryam Momeni Arsalan Salari Shora Shafighnia Atefeh Ghanbari Fardin Mirbolouk 2012Chinese Medical Journal2012,,19:3
7AZ31-O镁合金和6061-T6铝合金搅拌摩擦焊接头的显微组织和力学性能(英文)显示文摘对3 mum厚的AZ31-O镁合金板和6061-T6铝合金板进行异种材料搅拌摩擦焊.实验中搅拌针的旋转速度为600~1400 r/min,前进速度为20~60 mm/min.结果表明,在旋转速度1000 r/min、前进速度40 mm/min的工艺条件下,可以获得无缺陷的焊接接头.组织观察发现搅拌区的晶粒尺寸要比基材区的明显小很多.在搅拌区形成了复杂的金属流动.显微硬度测试表明搅拌区的硬度分别是不均匀的.拉伸实验结果表明,接头的拉伸强度约为基材AZ31镁合金的76%,或6061铝合金的60%.接头拉伸断口SEM形貌观察表明为脆性断裂.Alireza MASOUDIAN Arvin TAHAEI Atefeh SHAKIBA Fariborz SHARIFIANJAZI Jamshid Aghazadeh MOHANDESI 2014Transactions of Nonferrous Metals Society of China2014,24,5:3
8Acoustics in urban parks:Does the structure of narrow urban parks matter in designing a calmer urban landscape?显示文摘Urban parks can function as a proper sink of noise pollution.However,lack of universally-agreed upon methodologies and differing urban conditions have fueled controversy surrounding the effectuation of this urban park function around the world.Hence,to address this controversy in narrow urban parks(with a mean width of∼109 m)in Isfahan City,Central Iran,noise levels(Lq30)were measured along two longitudinal transects placed along the interior northern river-and adjacent to the southern edge of the parks bordered by a heavily-conjected road.We used statistical tests and models to determine the association of noise levels measured along the northern transect with the distance to,and the intensity of noise emitted from,the road,vegetation biomass,and vegetation height within two 50 and 100 m buffer rings drawn around northern sites and the richness of bird species.The average Lq30 values differed significantly between the southern(∼73.21 dB)and northern(∼66.43 dB)transects and correlated negatively with species richness(r(98)=−0.324,p<0.01).Three variables including mean NDVIwithin the 100 m buffer ring,distance from the road and mean Lq30 values of the nearest three southern sites were included to build the best predictive multiple-linear regression model through the step-wise procedure with r2 of 0.52.These findings suggest that further attempts aiming to alleviate the parks’interior noise level should be attentive to distance to road,traffic at the nearest road part,and the interior vegetation characteristics.Shahla Tashakkor Atefeh Chamani Mozhgan Ahmadi Nadoushan Minoo Moshtaghie 2020Frontiers of Earth Science2020,14,3:2
9使用Pentacam检测亚临床期和早期圆锥角膜患者角膜体积和前房容积显示文摘目的:使用Pentacam检测健康、亚临床期和早期圆锥角膜患者角膜体积和前房容积。方法:流行病学研究。共纳入63例屈光手术患者。根据Amsler-Krumeich标准,将患者分为正常、亚临床期和早期三组。收集了包括年龄和性别在内的人口统计信息,并获得了患者的完整病史。所有患者进行完整的视力检查。随后,使用Pentacam测量三组患者的角膜体积和前房容积。结果:对照组角膜体积明显高于亚临床期组和早期组(P<0.05),但两组间前房容积无显著性差异(P>0.05)。结论:测量角膜体积有助于鉴别亚临床期圆锥角膜和早期圆锥角膜与正常眼。亚临床圆锥角膜患者、早期圆锥角膜患者和正常人的前房容积无显著差异。Farshad Ostadian Fereydoun Farrahi Atefeh Mahdian Rad Mohammad Sadegh Mirdehghan 2020国际眼科杂志2020,20,5:2
10Comparison of exogenous melatonin versus placebo on sleep efficiency in emergency medicine residents working night shifts: A randomized trial显示文摘BACKGROUND: Sleep deprivation resulting from night shifts, is a major cause of burnout among physicians. Exogenous melatonin may improve sleep quality in night-shift workers. The study aims to compare the effectiveness of melatonin versus placebo on sleep effi ciency in emergency medicine(EM) residents. METHODS: A randomized, double-blind, replicated crossover trial was performed on EM residents. This study consisted of 4 phases within a month with intervention periods of 2 nights and washouts of 6 days. In our study, EM residents had nine-hour shifts on 6 consecutive days, 2 mornings, 2 evenings and 2 nights and then 2 days off. At the end of shifts' cycle, 24 EM residents were given 3 mg melatonin or placebo(12 in each arm of the study) for 2 consecutive nights after the second night shift with crossover to the other arm after a six-day off drug. This crossover intervention was repeated for two more another time. Finally, we created 48 cases and comparisons in each arm. Different items related to sleep quality were assessed and compared both within the same group and between the two groups. RESULTS: In the melatonin group, daytime sleepiness(calculated by Karolinska Sleep Scale) had a signifi cant reduction after taking the second dose of drug(P=0.003) but the same result was not observed when comparing the 2 groups. Mood status(calculated by Profile of Mood States) showed no remarkable difference between the 2 groups. CONCLUSION: Melatonin might have a limited benefi t on sleep quality in EM residents working night shifts.Shcrvin Farahmand Masoume Vafaeian Elnaz Vahidi Atefeh Abdollahi Shahram Baghcri-Hariri Ahmad Reza Dehpour 2018World Journal of Emergency Medicine2018,9,4:2
11Effect of capsular tension ring implantation on predicted refractive error after cataract surgery in patients with pseudoexfoliation syndrome显示文摘AIM: To investigate the effect of capsular tension ring(CTR) implantation on predicted refractive error after cataract surgery in patients with pseudoexfoliation(PEX) syndrome.METHODS: This double-blind randomized clinical trial was conducted on 60 patients with PEX syndrome referring to Imam Khomeini Hospital affiliated to Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran, for undergoing cataract surgery. The study population was divided into two groups, namely CTR group(n=30) and non-CTR group(control group;n=30). The refractive error and anterior chamber depth(ACD) were measured 1 wk, 1 mo, and 3 mo after phacoemulsification(PE) surgery.RESULTS: The results indicated no statistically significant difference between the two groups in terms of predicted refractive error(obtained by subtracting preoperative predicted refractive error from actual postoperative refractive error) 1 wk(P=0.47), 1 mo(P=0.30), and 3 mo(P=0.06) after the PE surgery. Regarding the CTR group, the changes of ACD was statistically significant 1 and 3 mo after the PE surgery, compared to those obtained 1 wk post-surgery(P=0.005).CONCLUSION: The CTR implantation in PEX cataractous patients without zonulysis has no statistically significant effect on the predicted refraction and ACD changes after PE. The predicted refraction error has a hyperopic shift in both groups. The results reveal the unnecessary of calculating modified IOL in CTR implantation.Mohammad Malekahmadi Sadegh Kazemi Farideh Sharifipour Farshad Ostadian Atefeh Mahdian Rad Mohammad Sadegh Mirdehghan 2020International Journal of Ophthalmology(English edition)2020,13,4:2
12Seismic performance of non-structural components and contents in buildings: an overview of NZ research显示文摘This paper summarizes the research on non-structural elements and building contents being conducted at University of Canterbury in New Zealand.Since the 2010-2011 series of Canterbury earthquakes,in which damage to non-structural components and contents contributed heavily to downtime and overall financial loss,attention to seismic performance and design of non-structural components and contents in buildings has increased exponentially in NZ.This has resulted in an increased allocation of resources to research leading to development of more resilient non-structural systems in buildings that would incur substantially less damage and cause little downtime during earthquakes.In the last few years,NZ researchers have made important developments in understanding and improving the seismic performance of secondary building elements such as partitions,facades,ceilings and contents.Rajesh P Dhakal Atefeh Pourali Ali Sahin Tasligedik Trevor Yeow Andrew Baird Gregory Mac Rae Stefano Pampanin Alessandro Palermo 2016Earthquake Engineering and Engineering Vibration2016,15,1:2
13Comparison of Spatial Interpolation Methods for Gridded Bias Removal in Surface Temperature Forecasts显示文摘All numerical weather prediction(NWP) models inherently have substantial biases, especially in the forecast of near-surface weather variables. Statistical methods can be used to remove the systematic error based on historical bias data at observation stations. However, many end users of weather forecasts need bias corrected forecasts at locations that scarcely have any historical bias data. To circumvent this limitation, the bias of surface temperature forecasts on a regular grid covering Iran is removed, by using the information available at observation stations in the vicinity of any given grid point. To this end, the running mean error method is first used to correct the forecasts at observation stations, then four interpolation methods including inverse distance squared weighting with constant lapse rate(IDSW-CLR), Kriging with constant lapse rate(Kriging-CLR), gradient inverse distance squared with linear lapse rate(GIDS-LR), and gradient inverse distance squared with lapse rate determined by classification and regression tree(GIDS-CART), are employed to interpolate the bias corrected forecasts at neighboring observation stations to any given location. The results show that all four interpolation methods used do reduce the model error significantly,but Kriging-CLR has better performance than the other methods. For Kriging-CLR, root mean square error(RMSE)and mean absolute error(MAE) were decreased by 26% and 29%, respectively, as compared to the raw forecasts. It is found also, that after applying any of the proposed methods, unlike the raw forecasts, the bias corrected forecasts do not show spatial or temporal dependency.Seyedeh Atefeh MOHAMMADI Majid AZADI Morteza RAHMANI 2017Journal of Meteorological Research2017,31,4:1
14Application of fuzzy support vector machine for determining the health index of the insulation system of in-service power transformers显示文摘Atefeh D A Hui M Tapan K S 2013IEEE Transactions on Dielectrics and Electrical Insulation2013,20,3:1
15Ethnobotanical survey of herbal remedies traditionally used in Kohghiluyeh va Boyer Ahmad province of Iran显示文摘Mahmoud Mosaddegh Farzaneh Naghibi Hamid Moazzeni Atefeh Pirani Somayeh Esmaeili 2012Journal of Ethnopharmacology2012,,1:1
16A survey of techniques for event detection in Twitter 显示文摘ATEFEH F KHREICH W 2015Computational Intelligence2015,31,1:1
17First Report of the Protective Effects of Remote Per- and Postconditioning on Ischemia/Reperfusion-Induced Renal Injury显示文摘Mehri Kadkhodaee Behjat Seifi Atefeh Najafi Zahra Sedaghat 2011Transplantation2011,,10:1
18Parkinson’s Disease Detection Using Biogeography-Based Optimization显示文摘In recent years,Parkinson’s Disease(PD)as a progressive syndrome of the nervous system has become highly prevalent worldwide.In this study,a novel hybrid technique established by integrating a Multi-layer Perceptron Neural Network(MLP)with the Biogeography-based Optimization(BBO)to classify PD based on a series of biomedical voice measurements.BBO is employed to determine the optimal MLP parameters and boost prediction accuracy.The inputs comprised of 22 biomedical voice measurements.The proposed approach detects two PD statuses:0-disease status and 1-good control status.The performance of proposed methods compared with PSO,GA,ACO and ES method.The outcomes affirm that the MLP-BBO model exhibits higher precision and suitability for PD detection.The proposed diagnosis system as a type of speech algorithm detects early Parkinson’s symptoms,and consequently,it served as a promising new robust tool with excellent PD diagnosis performance.Somayeh Hessam Shaghayegh Vahdat Irvan Masoudi Asl Mahnaz Kazemipoor Atefeh Aghaei Shahaboddin Shamshirband Timon Rabczuk 2019Computers, Materials & Continua2019,,7:1
19Robust supply chain network design with service level against disruptions and demand uncertainties: A real-life case显示文摘Atefeh Baghalian Shabnam Rezapour Reza Zanjirani Farahani 2012European Journal of Operational Research2012,,:1
20CFD simulation of gas-liquid flow behaviour in an air-lift reactor:determination of optimum distance of the draft tube显示文摘Hekmat Atefeh Amooghin Abtin Ebadi Moraveji Mostafa Keshavarz 2010Simulation Modeling Practice and Theory2010,18,7:1
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