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30篇 您的检索式:作者名="Changiz"
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1Addition of IrO_2 to RuO_2+TiO_2 coated anodes and its effect on electrochemical performance of anodes in acid media显示文摘Ternary mixed metal oxide coatings with the nominal composition IrxRu(0.6-x)Ti0.4O2(x=0, 0.1, 0.2, 0.3) on the titanium substrate were prepared by thermal decomposition of a chloride precursor mixture. Surface morphology and microstructure of the coatings were investigated by Scanning electron microscopy(SEM), Field emission scanning electron microscopy(FE-SEM) and X-ray diffraction(XRD) analysis. Systematic study of electrochemical properties of these coatings was performed by cyclic voltammetry(CV) and polarization measurements. The corrosion behavior of the coatings was evaluated under accelerated conditions(j=2 A cm-2) in acidic electrolyte. The role of iridium oxide admixture in the change of electrocatalytic activity and stability of Ru0.6Ti0.4O2coating was discussed. Small addition of IrO2can improve the stability of the RuO2+TiO2mixed oxide, while the electrocatalytic activity for oxygen evolution reaction(OER) is decreased. The shift of redox potentials for Ru0.6Ti0.4O2electrode that is slightly activated with IrO2and improvement in the stability can be attributed to the synergetic effect of mixed oxide formation.Farhad Moradi Changiz Dehghanian 2014Progress in Natural Science:Materials International2014,24,2:7
2Corrosion behavior of Ni-P/nano-TiC composite coating prepared in electroless baths containing different types of surfactantSahar Afroukhteh Changiz Dehghanian Massood Emamy 2012Progress in Natural Science:Materials International2012,22,5:7
3粉末冶金法制备的Mg-5Zn-0.3Ca/nHA生物复合材料的体外降解和细胞毒性(英文)显示文摘采用纯Mg、Zn、Ca粉末和纳米羟基磷灰石(nH A)粉末,通过粉末冶金方法制备Mg-5Zn-0.3Ca/nHA生物复合材料,研究不同nHA增强相含量(1%、2.5%和5%,质量分数)对Mg-5Zn-0.3Ca合金腐蚀性能的影响。通过模拟体液浸泡试验和电化学技术测试其耐腐蚀性。结果显示,添加1%和2.5%的nH A提高镁合金的耐腐蚀性,这是因为生物活性nH A促进稳定的磷酸盐和碳酸盐表面沉积层的形成,从而提高纳米复合材料的耐蚀性。然而,在镁合金中添加更高含量的nH A作为增强相时,表面沉积层的密度增加,导致局部腐蚀产生的气体无法及时排出而聚集在沉积层下,减小层与基体的粘着力,导致耐腐蚀性能下降。对镁合金及其纳米复合材料的间接细胞毒性评价表明其浸提液无细胞毒性,添加1%nHA的纳米复合材料的测试结果与阴性对照组几乎相似。Neda ABOUDZADEH Changiz DEHGHANIAN Mohammad Ali SHOKRGOZAR 2018Transactions of Nonferrous Metals Society of China2018,28,9:4
4Evaluation of preventable trauma death in emergency department of Imam Reza hospital显示文摘BACKGROUND: Trauma is considered as a worldwide problem despite socio-economic development. Motor vehicle accidents(MVAs) are the most important cause of trauma. Trauma related deaths are mostly preventable. This study aimed to investigate the causes and prevention of death in trauma patients.METHODS: This retrospective, descriptive-analytic study assessed 100 trauma patients referred to our emergency department(ED) from January 2013 to Januanry 2015. The included patients were those with trauma died after arrival at our ED. Age, sex, cause of trauma, clinical causes of death, causes of death def ined by autopsy, way of transfer to the ED, time of ambulance arrival at the scene of trauma, and time elapsed to enter the ED from the scene of trauma were studied.RESULTS: In the 100 patients, 21(21%) patients were female and 79(79%) male. Fortythree patients were older than 60 years. Trauma was largely due to pedestrian accidents in 31% of the patients, and 33% had a hypo-volemic shock. About 80% of deaths were due to intra-cranial hemorrhage(ICH) or intra-ventricular hemorrhage(IVH), and spinal injuries were not preventable. Autopsy revealed that 28% of the patients suffered from internal injuries. Autopsy revealed that 19% of the deaths were not preventable and 81% were considered preventable. In our patients, 76 were transferred to the hospital by emergency medicine services(EMS). Analysis of time for ambulance arrival to the scene and frequency of death revealed that 52.2% of the deaths occurred between 11 and 15 minutes. Analysis of time for admission to the ED from the scene of trauma showed that 74.6% deaths occurred between 6 and 10 minutes.CONCLUSIONS: The rate of hospital preventable deaths is about 80%, a high mortality rate, which denotes a lack of proper diagnosis and treatment. The time for arrival of EMS at the scene of trauma is longer than that in other countries.Changiz Gholipour Bahram Samadi Rad Samad Shams Vahdati Amir Ghaffarzad Armita Masoud 2016World Journal of Emergency Medicine2016,7,2:2
5Evaluation of the risk factors associated with emergency department boarding:A retrospective cross-sectional study显示文摘Purpose Boarding is a common problem in the emergency department(ED)and is associated with poor health care and outcome.Imam Khomeini Hospital is the main healthcare center in Urmia,a metropolis in the northwest of Iran.Due to the overcrowding and high patient load,we aim to characterize the rate,cause and consequence of boarding in the ED of this center.Methods All medical records of patients who presented to the ED of Imam Khomeini Hospital from August 1,2017 to August 1,2018 were retrospectively analyzed.Patients with uncompleted records were excluded.Boarding was defined as the inability to transfer the admitted ED patients to a downstream ward in≥2 h after the admission order.Demographic data,boarding rate,mortality and triage levels(1–5)assessed by emergency severity index were collected and analyzed.The first present time of patients was classified into 4 ranges as 0:00–5:59,6:00–11:59,12:00–17:59 and 18:00–23:59.Descriptive,parametric and non-parametric statistical tests were performed and the risk of boarding was determined by Pearson Chi-square test.Results Demographic data analysis showed that 941(58.5%)male and 667(41.5%)female,altogether 1608 patients were included in this study.Five patients(0.3%)died.The distribution of patients with the triage levels 1–5 was respectively 79(4.9%),1150(71.5%),374(23.3%),4(0.2%)and 0(0%).Most patients were of level 2.Only 75(4.7%)patients required intensive care.The majority of patients(84.2%)were presented at weekdays.The maximum patient load was observed between 12:00–17:59.Of the 1608 patients,340(21.1%)experienced boarding within a mean admission time of 13.70 h.Among the 340-boarded patients,20.1%belonged to surgery,12.1%to orthopedics,10.9%to neurosurgery and 10.3%to neurology.The boarding rate was higher in females,patients requiring intensive care and those with low triage levels.Compared with the non-boarded,the boarded patients had a higher mean age.Conclusion The boarding rate is higher in the older and female patients.Moreover,boarding is dependent on the downstream ward sections:patients requiring surgical management experience the maximum boarding rate.Yousef Nouri Changiz Gholipour Javad Aghazadeh Shahriar Khanahmadi Talayeh Beygzadeh Danial Nouri Mehryar Nahaei Reza Karimi Elnaz Hosseinalipour 2020Chinese Journal of Traumatology2020,23,6:1
6Postnatal development on cortical acetylcholine-sterase-rich neurons in the rat brain:permanent and transient patterns显示文摘Changiz G 1995Exp Neurol1995,134,2:1
7Bandwidth Enhancement of CPW-Fed Circle-Like Slot Antenna with Dual Band-Notched Characteristic 显示文摘Emadian Seyed Ramin Ghnbadi Changiz Nourinia Javad 2012IEEE Antennas and Wireless Propagation Letters2012,,11:1
8Novel modi-fled UWB planar monopoleantenna with variable frequency band-notch function显示文摘REZA Z CHANGIZ G JAVAD N 2008IEEE Antennasand Wireless Propagation Letters2008,9,7:1
9Vulnerabil- ity screening and capacity assessment of reinforced concrete Col- urrms subjected to blast显示文摘DAKHAKHNI W W MEKKY W F CHANGIZ S H 2009Journal of Performance of Construc- ted Facilities2009,23,5:1
10Bandwidth enhancement of CPW-Fed circle-like slot antenna with dual band-notched characteristic显示文摘Emadian Seyed Ramin Ghobadi Changiz Nourinia Javad 0,,11:1
11Comparison of the coating properties and corrosion rates in electroless Ni-P/ PTFE composites prepared by different types of surfactants 显示文摘Iman R-Mafi Changiz Dehghanian 2011Applied Surface Science2011,257,:1
12Measuring metacognitions associated with emotional distress: Factor structure and predietive validity of the metaeognitions questionnaire 30显示文摘Spada Mareantonio M Changiz Mohiyeddini Adrian Wells 2008Personality and Individual Differences2008,45,8:1
13Effect o{ Dietary Lipid and Protein Levels with Different Protein to En- ergy Ratios on Growth Performance, Feed Utilization and Body Composition of Rutilus Frisii Kutum (Kamenskii, 1901) Fingerlings 显示文摘GHAFFAR E H OURAJI F F CHANGIZ M 2013Aquaculture Research2013,44,9:1
14Studying the effects of the addition of TiN nanoparticles to Ni–P electroless coatings显示文摘Iman R. Mafi Changiz Dehghanian 2011Applied Surface Science2011,,5:1
15Two-day primary trauma care workshop:early and late evaluation of knowledge and practice显示文摘Hassan A Changiz G Mohammad M 2013Eur J Emerg Med2013,20,2:1
16Small Square Monopole Antenna With Inverted T-Shaped Notch in the Ground Plane for UWB Application 显示文摘Mohammad Ojaroudi Changiz Ghobadi and Javad Nourinia 2009IEEE Antennas and Wireless Propagation Letters2009,8,:1
17Novel modified UWB planar monopole antenna with variable frequency band-notch function 显示文摘Zaker Reza Ghobadi Changiz Nourinia Javad 2008IEEE Antennas and Wireless Propagation Letters2008,7,:1
18Stressors in clinical nursing education in Iran:A systematic review显示文摘Changiz T Malekpour A Zargham-Boroujeni A 2012Iran J Nurs Midwifery Res2012,17,6:1
19Efficacy and safety of early laparoscopic common bile duct exploration as primary procedure in acute cholangitis caused by common bile duct stones显示文摘CHANGIZ GHOLIPOUR ROSITA A SHALCHI 2007Journal of Laparoendoscopic & Advanced Surgical Techniques2007,17,5:1
20Corrosion protection of the reinforcing steels in chloride-laden concrete environment through epoxy/polyaniline-camphorsulfonate nanocomposite coating显示文摘Sadegh P Changiz D Ali K 2015Corrosion Science2015,90,:1
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