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| 1 | 3D printing of PEEK–cHAp scaffold formedical bone implant显示文摘The major drawback associated with PEEK implants is their biologically inert surface,which caused unsatisfactory cellular response and poor adhesion between the implants and surrounding soft tissues against proper bone growth.In this study,polyetheretherketone(PEEK)was incorporated with calcium hydroxyapatite(cHAp)to fabricate a PEEK-cHAp biocomposite,using the fused deposition modeling(FDM)method and a surface treatment strategy to create microporous architectures onto the filaments of PEEK lattice scaffold.Also,nanostructure and morphological tests of the PEEK-cHAp biocomposite were modeled and analyzed on the FDM-printed PEEK-cHAp biocomposite sample to evaluate its mechanical and thermal strengths as well as in vitro cytotoxicity via a scanning electron microscope(SEM).A technique was used innovatively to create and investigate the porous nanostructure of the PEEK with controlled pore size and distribution to promote cell penetration and biological integration of the PEEK-cHAp into the tissue.In vivo tests demonstrated that the surface-treated micropores facilitated the adhesion of newly regenerated soft tissues to form tight implant-tissue interfacial bonding between the cHAp and PEEK.The results of the cell culture depicted that PEEK-cHAp exhibited better cell proliferation attachment spreading and higher alkaline phosphatase activity than PEEK alone.Apatite islands formed on the PEEK-cHAp composite after immersion in simulated body fluid of Dulbecco’s modified Eagle medium(DMEM)for 14 days and grew continuously with more or extended periods.The microstructure treatment of the crystallinity of PEEK was comparatively and significantly different from the PEEK-cHAp sample,indicating a better treatment of PEEK-cHAp.The in vitro results obtained from the PEEK-cHAp biocomposite material showed its biodegradability and performance suitability for bone implants.This study has potential applications in the field of biomedical engineering to strengthen the conceptual knowledge of FDM and medical implants fabricated from PEEK-cHAp biocomposite materials. | Bankole I.Oladapo SAbolfazl Zahedi Sikiru O.Ismail Francis T.Omigbodun Oluwole K.Bowoto Mattew A.Olawumi Musa A.Muhammad | 2021 | Bio-Design and Manufacturing2021，4，1： | 7 |
| 2 | 硬脂酸改性处理TC4钛合金微弧氧化膜层耐蚀性的研究显示文摘在Ti6Al4V合金微弧氧化膜层上采用硬脂酸改性处理实现了陶瓷膜层的疏水化转变,显著提高了钛合金的耐蚀性能。利用接触角测试仪、扫描电子显微镜(SEM)、能谱仪(EDS)和傅里叶变换红外光谱仪(FT-IR)对膜层的润湿性、稳定性、微观结构和化学组成进行了分析,并通过动电位极化曲线和电化学阻抗分析了其腐蚀行为。结果表明,改性处理得到的疏水微弧氧化膜层试样能有效修复微弧氧化膜层缺陷,提高钛合金的耐蚀性能,说明硬脂酸改性处理与微弧氧化技术相结合有助于拓宽微弧氧化技术在钛合金上的应用。 | 王伟 赵景茂 魏世雄 赵志杰 Muhammad Junaid Anjuma Vahdat Zahedi Asl | 2020 | 北京化工大学学报(自然科学版)2020，47，1： | 6 |
| 3 | Accumulation of heavy metal in Platanus orientalis, Robinia pseudoacacia and Fraxinus rotundifolia显示文摘Plants are capable of reducing environmental pollutions through uptaking contaminants in their tissues. In the study site, twenty one-year-old leaves and shoots as well as twenty soil samples were sampled and analyzed by Inductively Coupled Plasma (ICP). We investigated the uptaking ability of lead (Pb) and cadmium (Cd) by the leaves and shoots of Platanus orientalis, Robinia pseudoacacia and Fraxinus rotundifolia in Karaj city, the western Tehran, Iran. We also evaluated the total metal accumulation capacity by using metal accumulation index (MAI). Results indicated that there was no significant difference in uptaking contents of Cd and Pb in the leaves among the trees. However accumulation of Cd in shoots of F. rotundifolia and R. pseudoacacia was significantly higher than that of P. orientalis. The accumulation of Pb in shoots of R. pseudoacacia was significantly higher than the other species. The amount of Pb in the soil of the study area was significantly higher than Cd. Concentrations of Cd and Pb in leaves of the three species are in the ranges of 2.4 2.7 mg Kg-1 and 7.1 14.4 mg Kg-1 , respectively. R. pseudoacacia had the highest MAI value for leaves (2.21) and F. rotundifolia had the highest MAI value for shoots (2.4). | Sajjad Hosseinzadeh Monfared Mohammad Matinizadeh Anoushirvan Shirvany Ghavamedin Zahedi Amiri Reza Mousavi Fard Fariba Rostami | 2013 | Journal of Forestry Research2013，24，2： | 5 |
| 4 | The risk of wound infection after simple hand laceration显示文摘BACKGROUND: This prospective observational study aimed to determine the infection rate of simple hand laceration(SHL), and to compare infection rates between patients who were prescribed antibiotics and those who were not.METHODS: The study was performed at two urban hospitals enrolling 125 emergency department(ED) patients with SHL. Exclusion criteria included patients with lacerations for more than 12 hours, immunocompromized patients, patients given antibiotics, and patients with gross contamination, bites or crush injuries. Wound infection was defined as clinical infection at a follow-up visit(10–14 days) or wound was treated with antibiotics. Patient satisfaction was also measured using a visual analogue scale 1–10, asking the patients about wound appearance. Demographic data and wound characteristics were compared between the infected and non-infected wounds. The infection rates were also compared between patients who received prophylactic antibiotics and those who did not. The results were presented with medians and quartiles or percentages with 95% confidence intervals(CI).RESULTS: In the 125 patients with SHL [median age: 28(18, 43); range: 1–102 years old; 36% female], 44(35%, 95% CI: 27%–44%) were given antibiotics in the ED. Wound infection was reported in 6 patients(4.8%, 95% CI: 2%–10%). Age, gender, history of diabetes and wound closure were not associated with wound infection(P>0.05). The infection rate was not significantly different between patients with or without antibiotic prophylaxis [7%(3/44), 95% CI: 2%–10% vs. 4%(3/81), 95% CI: 1%–11%, P=0.66]. Patient's satisfaction with appearance ofinfected and non-infected wounds were significantly different [7.5(6, 8) vs. 9(8, 10), P=0.01].CONCLUSION: Approximately 5% of simple hand lacerations become infected. Age, gender, diabetes, prophylactic antibiotics and closure technique do not affect the risk ofinfection. | Gholamreza S Roodsari Farhad Zahedi Shahriar Zehtabchi | 2015 | World Journal of Emergency Medicine2015，6，1： | 5 |
| 5 | A New Alpha-function for the Peng-Robinson Equation of State: Application to Natural Gas显示文摘Cubic equations of state(EOSs) are simple and easy at calculation. One way of improving the accuracy of a cubic EOS is through the modification of temperature-dependent energy parameter by using alpha-function.The industrial applications of natural gas are very wide and as a result, prediction of thermodynamic properties and phase behavior of natural gas is an important part of design for such processes. In this work we develop a newα-function for the Peng-Robinson(PR) EOS with the parameters optimized especially for natural gas components.The parameters are generalized as a linear function of acentric factor. The results are compared to the predictions from original PR EOS and other α-functions in literature. It is shown that the new α-function presents a good accuracy with the average deviation of 1.42% for natural gas components. | Hamid Saffari Alireza Zahedi | 2013 | Chinese Journal of Chemical Engineering2013，21，10： | 3 |
| 6 | Responses of Four Rice Varieties to Elevated CO_2 and Different Salinity Levels显示文摘This study was carried out in 2014 at Isfahan University of Technology, Iran, to evaluate the responses of four rice varieties(Neda, Deylamani, Shiroudi and Domsorkh) to ambient(360 ± 50 μmol/mol) and elevated(700 ± 50 μmol/mol) air carbon dioxide(CO_2) concentrations under four salinity levels(0, 30, 60 and 90 mmol/L Na Cl). There was significant variation among rice varieties in response to elevated CO_2 concentration under the four salinity levels. Under non-saline condition, elevated CO_2 increased the dry weight of Neda, Deylamani and Domsorkh by 8%, 50% and 8%, respectively, but reversely decreased that of Shiroudi by 34%. Increasing CO_2 concentration significantly reduced the negative effects of salinity on Shiroudi, but these effects were even increased in Deylamani and Domsorkh under all the salinity levels and in Neda only under 30 and 60 mmol/L Na Cl. Significant correlations were established between plant dry weight, SPAD value and leaf area under both CO_2 levels. However, this trend was observed only at ambient CO_2 concentration in the presence of soluble carbohydrates. The results revealed the genotype and salinity dependence of the effects of CO_2 concentrations on the rice traits investigated. | Sheidollah KAZEMI Hamid Reza ESHGHIZADEH Morteza ZAHEDI | 2018 | Rice science2018，25，3： | 3 |
| 7 | 利用FFV预测缓蚀剂在不同体系中的协同效应显示文摘目的研究一种分析缓蚀组分间协同效应的新方法。方法使用Material Studio 7.0软件中的Amorphous Cell模块进行对象构建,在不同体系中利用Discover模块进行优化和运算,以水分子为探针进行FFV值测试,模拟计算得到FFV,再利用其变化率,来预测缓蚀组分间的协同效应,并通过传统方法验证该方法的正确性。结果FFV模拟结果表明,在CO2体系中,MTIAS与AB2N具有协同效应,当二者按照摩尔比3∶2复配时的FFV最小,FFV的变化值D值最大,协同效应最好,缓蚀效率最高,而MTIAS与CPQA没有明显协同效应。在CO2/H2S体系中,MTIAS与CPQA按照摩尔比4∶1复配时的FFV最小,D值最大,协同效应最好,缓蚀效率最高;而当按照摩尔比1:4复配时,却出现了明显的拮抗效应,此时MTIAS与AB2N没有明显协同效应。失重法、极化曲线的测试结果与上述结果吻合。结论通过缓蚀剂膜层的FFV预测缓蚀组分间的协同效应,是一种快速有效的研究方法。 | 陆原 赵景茂 李明杰 张晨 Vahdat Zahedi Asl Yahya Palizdar 樊保民 | 2020 | 表面技术2020，49，11： | 2 |
| 8 | Neutrophil gelatinase-associated lipocalin (NGAL) as a biomarker for acute renal injury after cardiac surgery显示文摘 | Jaya Mishra Catherine Dent Ridwan Tarabishi Mark M Mitsnefes Qing Ma Caitlin Kelly Stacey M Ruff Kamyar Zahedi Mingyuan Shao Judy Bean Kiyoshi Mori Jonathan Barasch Prasad Devarajan | 2005 | The Lancet . 2005 (9466)2005，，： | 2 |
| 9 | The Volterra-Lyapunov matrix theory for global stability analysis of a model of the HIV/AIDS显示文摘 | Moosarreza Shamsyeh Zahedi Narges Shayegh Kargar | 2017 | International Journal of Biomathematics2017，10，1： | 2 |
| 10 | 伊朗法尔斯省Poshtband地区植物的生活型和地理分布(英文)显示文摘在Postband地区(27°58′4″-28°2′16″N,53°17′34″-53°22′30″E),辨别植物种、植物多样性、生活型及地中海气候、Irano-Torunian和撒哈拉-新店相关植物种。2008年6月至2006年12月间,调查和辨认了29个科,69个属,总计95个种。就物种频度而言,菊科和禾本科是重要的科。按照Raunkiaer's生活型谱系统和利用■2检测,生活型谱表明,年生植物、地面芽植物、高位芽植物、地上芽植物和陷芽植物分别占据全部植物种的47%、31%、12%、7%和3%。在地理分布上,Irano-Torunia地区,拥有最高的频度的29%的物种。结果表明,一年生植物比生活型基准群谱高;高位芽植物比生活型基准群谱低,这与在干旱地区的研究数据相一致。图1表4参50。 | Gholamhosein Moradi Mohammad Reza Marvie Mohadjer Ghavamodin Zahedi Amiri Anoushirvan Shirvany Nosratollah Zargham | 2010 | Journal of Forestry Research2010，21，2： | 2 |
| 11 | Ecologic study of serum selenium and upper gastrointestinal cancers in Iran显示文摘AIM: Both observational and experimental studies have shown that higher selenium status reduces the risk of upper gastrointestinal cancers in selenium deficient populations.Recent cancer registry data have shown very different rates of esophageal cancer (EC) and gastric cancer (GC) in four Provinces of Iran, namely Ardabil, Mazandaran, Golestan,and Kerman. The aim of this study was to have a preliminary assessment of the hypothesis that high rates of EC in Golestan and high rates of GC in Ardabil may be partly attributable to selenium deficiency.METHODS: We measured serum selenium in 300 healthy adults from ArdabU (n = 100), Mazandaran (n = 50), Golestan (n = 100), and Kerman (n = 50), using inductively coupled plasma, with dynamic reaction cell, mass spectrometry (ICP-DRC-MS) at the US Centers for Disease Control (Atlanta,Georgia).RESULTS: The median serum selenium concentrations were very different in the four Provinces. The medians (IQR) for selenium in Ardabil, Mazandarn, Golestan, and Kerman were 82 (75-94), 123 (111-132), 155 (141-173), and 119 (110-128) μg/L, respectively (P<0.001). The results of linear regression showed that the Province variable, by itself,explained 76% of the variance in log selenium (r^2 = 0.76).The proportion of the populations with a serum selenium more than 90μg/L (the concentration at which serum selenoproteins are saturated) was 100% in Golestan,Kerman, and Mazandaran but only 29% in ArdabU.CONCLUSION: Our findings suggest nat selenium defidency is not a major contributor to the high incidence of EC seen in northeastern Iran, but it may play a role in the high incidence of GC in Ardabil Province. | Mehdi Nouarie Akram Pourshams Farin Kamangar Masood Sotoudeh Mohammad Hossein Derakhshan Mobammad Reza Akbari Hafez Fakheri Mohammad Javad Zahedi Kathleen Caldwell Christian C.Abnet Philip R.Taylor Reza Malekzadeh Sanford M.Dawsey | 2004 | World Journal of Gastroenterology2004，10，17： | 2 |
| 12 | Cooperative Sensor Anomaly Detection Using Global Information显示文摘Sensor networks are deployed in many application areas nowadays ranging from environment monitoring, industrial monitoring, and agriculture monitoring to military battlefield sensing. The accuracy of sensor readings is without a doubt one of the most important measures to evaluate the quality of a sensor and its network. Therefore, this work is motivated to propose approaches that can detect and repair erroneous (i.e., dirty) data caused by inevitable system problems involving various hardware and software components of sensor networks. As information about a single event of interest in a sensor network is usually reflected in multiple measurement points, the inconsistency among multiple sensor measurements serves as an indicator for data quality problem. The focus of this paper is thus to study methods that can effectively detect and identify erroneous data among inconsistent observations based on the inherent structure of various sensor measurement series from a group of sensors. Particularly, we present three models to characterize the inherent data structures among sensor measurement traces and then apply these models individually to guide the error detection of a sensor network. First, we propose a multivariate Gaussian model which explores the correlated data changes of a group of sensors. Second, we present a Principal Component Analysis (PCA) model which captures the sparse geometric relationship among sensors in a network. The PCA model is motivated by the fact that not all sensor networks have clustered sensor deployment and clear data correlation structure. Further, if the sensor data show non-linear characteristic, a traditional PCA model can not capture the data attributes properly. Therefore, we propose a third model which utilizes kernel functions to map the original data into a high dimensional feature space and then apply PCA model on the mapped linearized data. All these three models serve the purpose of capturing the underlying phenomenon of a sensor network from its global view, and then guide the error detection to discover any anomaly observations. We conducted simulations for each of the proposed models, and evaluated the performance by deriving the Receiver Operating Characteristic (ROC) curves. | Rui Zhang Ping Ji Dinkar Mylaraswamy Mani Srivastava Sadaf Zahedi | 2013 | Tsinghua Science and Technology2013，18，3： | 2 |
| 13 | GA-based approach to phase compensation of large phased array antennas显示文摘The investigation of the effect of electrical and mechanical errors on the performance of a large active phased array antenna is studied. These errors can decrease the antenna performance, for instance, the gain reduction, side lobe level enhancement, and incorrect beam direction. In order to improve the performance of the antenna in the presence of these errors, phase error correction of large phased array antennas using the genetic algorithm(GA) is implemented. By using the phase compensation method, the antenna overall radiation pattern is recovered close to the ideal radiation pattern without error. By applying the simulation data to a 32×40 array of elements with a square grid at the frequency of S-band and measurement of the radiation pattern, the effectiveness of the proposed method is verified. | ZAHEDI Amir ABBASI ARAND Bijan | 2018 | Journal of Systems Engineering and Electronics2018，29，4： | 2 |
| 14 | Cross-linking mechanisms of arginine and lysine with α,β-dicarbonyl compounds in aqueous solution显示文摘 | Nasiri R Field M J Zahedi M | | 0，，46： | 1 |
| 15 | Software reliability allocation based onstructure, utility, price, and cost 显示文摘 | Zahedi F Ashrafi N | 1991 | IEEE Transactions onSoftware Engineering1991，17，4： | 1 |
| 16 | The measurement of Web-customer satisfaction: an expectation and diseonfirmation approach 显示文摘 | Vicki McKinney Kanghyun Yoon Fatemeh Mariam Zahedi | 2002 | Information Systems Research2002，13，3： | 1 |
| 17 | Induction of Zf9 in the kidney following early ischemia/reperfusion显示文摘 | Tarabish R Zahedi K Mishra J | 2005 | Kidney Int2005，68，4： | 1 |
| 18 | BL general fuzzy automata and accept behavior 显示文摘 | Aholpour K Zahedi M M | 2012 | Journal of Applied Mathematics and Computing2012，38，12： | 1 |
| 19 | Expression of SSAT,a novel biomarker of tubular cell damage,increases in kidney ischemia-reperfusion injury显示文摘 | Zahedi K Wang Z Barone S | 2003 | Am J Physiol Renal Physid2003，284，5： | 1 |
| 20 | The C5α re ceptor is expressed by human renal proximal tubularepithelial cells显示文摘 | Zahedi R Braun M Wetsel R A | 2000 | Clin Exp Immunol2000，121，2： | 1 |
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