|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Warpage and Shrinkage Optimization of Injection-Molded Plastic Spoon Parts for Biodegradable Polymers Using Taguchi, ANOVA and Artificial Neural Network Methods显示文摘In this study, it is attempted to give an insight into the injection processability of three self-prepared polymers from A to Z. This work presents material analysis, injection molding simulation, design of experiments alongside considering all interaction effects of controlling parameters carefully for green biodegradable polymeric systems, including polylactic acid(PLA), polylactic acid-thermoplastic polyurethane(PLA-TPU) and polylactic acid-thermoplastic starch(PLA-TPS). The experiments were carried out using injection molding simulation software Autodesk Moldflow?in order to minimize warpage and volumetric shrinkage for each of the mentioned systems. The analysis was conducted by changing five significant processing parameters, including coolant temperature, packing time, packing pressure, mold temperature and melt temperature. Taguchi's L27(35) orthogonal array was selected as an efficient method for design of simulations in order to consider the interaction effects of the parameters and reduce spurious simulations. Meanwhile, artificial neural network(ANN) was also used for pattern recognition and optimization through modifying the processing conditions. The Taguchi coupled analysis of variance(ANOVA) and ANN analysis resulted in definition of optimum levels for each factor by two completely different methods. According to the results, melting temperature, coolant temperature and packing time had significant influence on the shrinkage and warpage. The ANN optimal level selection for minimization of shrinkage and/or warpage is in good agreement with ANOVA optimal level selection results. This investigation indicates that PLA-TPU compound exhibits the highest resistance to warpage and shrinkage defects compared to the other studied compounds. | Erfan Oliaei Behzad Shiroud Heidari Seyed Mohammad Davachi Mozhgan Bahrami Saeed Davoodi Iman Hejazi Javad Seyfi | 2016 | Journal of Materials Science & Technology2016，32，8： | 26 |
| 2 | Osteoporosis:A Silent Disease with Complex Genetic Contribution显示文摘Osteoporosis is the most common multifactorial metabolic bone disorder worldwide with a strong genetic component. In this review, the evidence for a genetic contribution to osteoporosis and related phenotypes is summarized alongside with methods used to identify osteoporosis susceptibility genes. The key biological pathways involved in the skeleton and bone development are discussed with a particular focus on master genes clustered in these pathways and their mode of action. Furthermore, the most studied single nucleotide polymorphisms(SNPs) analyzed for their importance as genetic markers of the disease are presented. New data generated by nextgeneration sequencing in conjunction with extensive meta-analyses should contribute to a better understanding of the genetic basis of osteoporosis and related phenotype variability. These data could be ultimately used for identifying at-risk patients for disease prevention by both controlling environmental factors and providing possible therapeutic targets. | Maryam Marl Golchin Laleh Heidari Seyyed Mohammad Hossein Ghaderian Haleh Akhavan-Niaki | 2016 | Journal of Genetics and Genomics2016，43，2： | 15 |
| 3 | Transplantation of stem cells from human exfoliated deciduous teeth for bone regeneration in the dog mandibular defect显示文摘AIM: To investigate the effect of stem cells from human exfoliated deciduous teeth(SHED) transplanted for bone regeneration in the dog mandibular defect.METHODS: In this prospective comparative study, SHEDs had been isolated 5 years ago from human exfoliated deciduous teeth. The undifferentiated stem cells were seeded into mandibular bone through-andthrough defects of 4 dogs. Similar defects in control group were filled with cell-free collagen scaffold. After 12 wk, biopsies were taken and morphometric analysis was performed. The percentage of new bone formation and foreign body reaction were measured in each case. The data were subject to statistical analysis using the Mann-Whitney U and Kruskalwalis statistical tests. Differences at P < 0.05 was considered as significant level.RESULTS: There were no significant differences between control and SHED-seeded groups in connective tissue(P = 0.248), woven bone(P = 0.248) and compact bone(P = 0.082). There were not any side effects in transplanted SHED group such as teratoma or malignancy and abnormalities in this period.CONCLUSION: SHEDs which had been isolated and characterized 5 years ago and stored with cryopreservation banking were capable of proliferation and osteogenesis after 5 years, and no immune response was observed after three months of seeded SHEDs. | Ali Behnia Abbas Haghighat Ardeshir Talebi Nosrat Nourbakhsh Fariba Heidari | 2014 | World Journal of Stem Cells2014，6，4： | 9 |
| 4 | Smartphones,tele-ophthalmology,and VISION 2020显示文摘Telemedicine is an emerging field in recent medical achievements with rapid development.The 'smartphone' availability has increased in both developed and developing countries even among people in rural and remotes areas.Telebased services can be used for screening ophthalmic diseases and also monitoring patients with known diseases.Electronic ophthalmologic records of the patients including captured images by smartphones from anterior and posterior segments of the eye will be evaluated by ophthalmologists,and if patients require further evaluations,they will be referred to experts in the relevant field.Eye diseases such as cataract,glaucoma,age-related macular degeneration,diabetic retinopathy,and retinopathy of prematurity are the most common causes of blindness in many countries and beneficial use of teleophthalmology with smartphones will be a good way to achieve the aim of VISION 2020 all over the world.Numerous studies have shown that teleophthalmology is similar to the conventional eye care system in clinical outcomes and even provides more patient satisfaction as it saves time and cost.This review explains how teleophthalmology helps to improve patient outcomes through smartphones. | Mehrdad Mohammadpour Zahra Heidari Masoud Mirghorbani Hassan Hashemi | 2017 | International Journal of Ophthalmology(English edition)2017，10，12： | 8 |
| 5 | Effects of Salinity and Potassium Application on Antioxidant Enzyme Activities and Physiological Parameters in Pearl Millet显示文摘A plot culture experiment was conducted in a greenhouse at University of Zabol,Iran,to study the effects of different salinity levels and potassium supply on pearl millet.The experiment was laid out in a completely randomized factorial design with three replicates.Potassium sulfate was used as the potassium source.The rates of potassium treatments were 0,100,and 200 kg ha-1.Pearl millet was subjected to different salinity levels(0,4,8,and 12 ds m-1) through addition of NaCl to irrigation water.Results showed that the increase in the salt concentration from control to 12 ds m-1 decreased grain yield(38.7%) of millet plants.In this study,we found a negative relationship between potassium and proline accumulation at vegetative(r2=-0.75**) and reproductive stage(r2=-0.66**) in millet plants.Salt stress remarkably elevated the activities of CAT and GPX antioxidant enzymes at vegetative and reproductive stages.Furthermore,potassium application had significant effect on grain yield and increased it about 10.6% at the highest salinity treatment(12 ds m-1).Though,potassium treatment increased antioxidant activity in millet plants,it had no significant effect on proline content in leaves.Salinity treatment decreased potassium uptake but application potassium increased potassium content in leaves at two stages. | Mostafa Heidari Parisa Jamshidi | 2011 | Agricultural Sciences in China2011，10，2： | 6 |
| 6 | Spinal fractures resulting from traumatic injuries显示文摘说明脊骨破裂和脊柱受伤的模式的机制的目的在伊朗的城市的人口由主要机制描绘了。脊柱受伤,缩短的损害分数,联系损害和病人的最后的命运的方法数据考虑脊柱受伤包括人口分布,机制和水平从 1999 ~ 2004 从伊朗的国家损伤注册表数据库被提取。有创伤的脊骨破裂的 619 个病人全部的结果 A 被识别,谁 68.5% 是男性。这些损害的山峰频率发生在 21-40 年年龄组。意外下降和道路交通碰撞(RTC ) 是针的破裂的最普通的机制(47.2% 和 44.1% ,分别地) 。RTC 趋于与意外下降相比发生在更年轻的病人。为针的骨折的最普通的针的区域是腰部的脊骨(53.63%) 。颈的脊骨破裂是显著地在 RTC 更普通,当腰部的脊骨破裂在意外下降是更普通的时(P < 0.001 ) 。171 的一个总数(27.6%) 病人们联系了非针的损害, 127 联系了极限损害,和 55 有的头损害。36 (5.6%) 病人们有针的绳索损害(SCI ) 。RTC 组的损害严厉分数比意外下降(P=0.002 ) 的显著地高。十五(4%) 病人们死于创伤的损害。死亡的率与意外下降相比在 RTC 是显著地更高的(5.1% 对 2.1% , P=0.039 ) 。结论针的破裂的模式类似于从发达国家报导的那些。RTC 趋于影响更年轻的年龄人口并且比意外下降与联系损害和死亡的更高的度被联系。因此预防的策略应该基于数字的减小和 RTC 的严厉。 | Heidari Pedram Zarei Mohammad Reza Rasouli Mohammad Reza Alexander R Vaccaro Rahimi-Movaghar Vafa | 2010 | Chinese Journal of Traumatology2010，13，1： | 6 |
| 7 | Modeling and process optimization for microbial desulfurization of coal by using a two-level full factorial design显示文摘The microbial sulfur removal was investigated on high sulfur content (1.9%) coal concentrate from Tabas coal preparation plant. A mixed culture of ferrooxidans microorganisms was isolated from the tailing dam of the plant. Full factorial method was used to design laboratory test and to evaluate the effects of pH, particle size, iron sulfate concentration, pulp density, and bioleaching time on sulfur reduction. Statistical analyses of experimental data were considered and showed increases of pH and particle size had negative effects on sulfur reduction, whereas increases of pulp density and bioleaching time raised microbial desulfurization rate. According to results of designing, and regarding statistical factors, the optimum values for maximum sulfur reduction were obtained; pH (1.5), particle size (-180 μm), iron sulfate concentration (2.7 mmol/L), pulp density (10%) and bioleaching time (14 d), which leaded to 51.5% reduction from the total sulfur of sample. | Golshani T. Jorjani E. Chelgani S. Chehreh Shafaei S.Z. Nafechi Y. Heidari | 2013 | International Journal of Mining Science and Technology2013，23，2： | 5 |
| 8 | Efficacy of new scoring system for diagnosis of abdominal injury after blunt abdominal trauma in patients referred to emergency department显示文摘Purpose: The blunt abdominal trauma (BAT) is a common emergency and is significantly associated with morbidity and mortality. Our study was conducted to achieve the goal that a new scoring system could be used for the BAT patients.Methods: The statistical population of this study was 1000 patients with BAT referred to emergency department of Imam Hossein Hospital, Tehran, Iran. Sampling was carried out in a convenience non-random manner and continued to reach the required sample size. All the patients with BAT due to road traffic accidents, falls, and other direct blunt traumas such as punctures and kickbacks were included in the study. Exclusion criteria were after 3 months of pregnancy, under the age of 18, warfarin taking, no reliable medical history providing and penetrating trauma. The study questionnaire was based on BAT scoring system. The data were analyzed by SPSS V20 software. The receiver operating characteristic curve was used to analyze the effectiveness of the new scoring system in predicting the BAT patients’ outcome.Results: The mean age of the patients (n = 1000) was (35.79 ± 13.09) years. The mean score of patients was (6.29 ± 5.80). Based on this scoring system, the patients were divided into three categories. The first group was patients at low risk with score of less than 8, the second group was patients at moderate risk with score of 8-12 and the third group was patients at high risk with score of 12-24. The score of 661 (66.1%) patients were low, 109 (10.9%) were moderate and 230 (23%) had a high score. The association between hip fracture and abdominal tenderness with abdominal injury was significant (p < 0.001). Cronbach’s alpha was 0.76 showing the reliability of this questionnaire to predict the future of patients.Conclusions: The study tool has a sensitivity to predict the BAT patients’ outcome, and has a proper specificity that can be used to reduce the use of harmful modalities such as computed tomography scan. | Majid Shojaee Anita Sabzghabaei Ali Heidari | 2020 | Chinese Journal of Traumatology2020，23，3： | 5 |
| 9 | Assessing the performance of decision tree and neural network models in mapping soil properties显示文摘To build any spatial soil database, a set of environmental data including digital elevation model(DEM) and satellite images beside geomorphic landscape description are essentials. Such a database, integrates field observations and laboratory analyses data with the results obtained from qualitative and quantitative models. So far, various techniques have been developed for soil data processing. The performance of Artificial Neural Network(ANN) and Decision Tree(DT) models was compared to map out some soil attributes in Alborz Province, Iran. Terrain attributes derived from a DEM along with Landsat 8 ETM+, geomorphology map, and the routine laboratory analyses of the studied area were used as input data. The relationships between soil properties(including sand, silt, clay, electrical conductivity, organic carbon, and carbonates) and the environmental variables were assessed using the Pearson Correlation Coefficient and Principle Components Analysis. Slope, elevation, geomforms, carbonate index, stream network, wetness index, and the band’s number 2, 3, 4, and 5 were the most significantly correlated variables. ANN and DT did not show the same accuracy in predicting all parameters. The DT model showed higher performances in estimating sand(R^2=0.73), silt(R^2=0.70), clay(R^2=0.72), organic carbon(R^2=0.71), and carbonates(R^2=0.70). While the ANN model only showed higher performance in predicting soil electrical conductivity(R^2=0.95). The results showed that determination the best model to use, is dependent upon the relation between the considered soil properties with the environmental variables. However, the DT model showed more reasonable results than the ANN model in this study. The results showed that before using a certain model to predict variability of all soil parameters, it would be better to evaluate the efficiency of all possible models for choosing the best fitted model for each property. In other words, most of the developed models are sitespecific and may not be applicable to use for predicting other soil properties or other area. | Fatemeh HATEFFARD Payam DOLATI Ahmad HEIDARI Ali Asghar ZOLFAGHARI | 2019 | Journal of Mountain Science2019，16，8： | 5 |
| 10 | CFD simulation of impeller shape effect on quality of mixing in two-phase gas–liquid agitated vessel显示文摘Mixing efficiency in two-phase gas–liquid agitated vessel is one of the important challenges in the industrial processes.Computational fluid dynamics technique(CFD)was used to investigate the effect of four different pitched blade impellers,including 15°,30°,45°and 60°,on the mixing quality of gas–liquid agitated vessel.The multiphase flow behavior was modeled by Eulerian–Eulerian multiphase approach,and RNG k-εwas used to model the turbulence.The CFD results showed that a strong global vortex plays the main role on the mixing quality of the gas phase in the vessel.Based on the standard deviation criterion,it was observed that the axial distribution of the gas phase in the 30°impeller is about 55%better than the others.In addition,the results showed that the 30°impeller has a uniform radial distribution over the other impellers and the maximum gas phase holdup in the vessel.Investigation of the power consumption of the impellers showed that the 30°impeller has the highest power consumption among the other pitched blade impellers.Also,examine the effect of same power condition for pitched blade impellers showed that the 30°impeller has the best mixing quality in this condition. | Amir Heidari | 2020 | Chinese Journal of Chemical Engineering2020，28，11： | 4 |
| 11 | Comparison among Ocular Response Analyzer,Corvis ST and Goldmann applanation tonometry in healthy children显示文摘AIM: To explore the relationship between different parameters of Ocular Response Analyzer(ORA) and Corvis ST(CST) in a sample of healthy Iranian school-aged children and the relationship between parameters of these 2 instruments against intraocular pressure(IOP), measured by the Goldmann applanation tonometer(GAT-IOP), age and gender, and find possible correlation between ORA and CST with GAT.METHODS: This cross-sectional study included 90 healthy children. A general interview and complete eye examination were performed. Following successful GATIOP measurement, ORA and CST were conducted. The CST parameters were A 1/2 length(A1 L, A2 L), A 1/2 velocity(A1 V, A2 V), highest concavity deformation amplitude(HCDA), radius of curvature(Ro C), peak distance(PD), central corneal thickness(CCT) and IOP. The ORA parameters were corneal hysteresis(CH), corneal resistance factor(CRF), Goldmann-correlated IOP(IOP-G) and corneal compensated IOP(IOP-CC). Extracted data was analyzed using the Statistical Package for Social Science software.RESULTS: Totally 39 males with age of 9.08±1.60(6-12)y and 51 females with age of 8.96±1.55(6-13)y were included. Many CST parameters were significantly correlated with CH, CRF, IOP-G and IOP-CC. Some CST parameters had a significant correlation with GAT-IOP, including IOP-CST in both eyes and HCDA, A2 L, PD, and RoC in the left eye, but none with age, except A2 L in the right eye. The CRF measurement showed a significant correlation with GAT-IOP in both eyes and CH in the right eye, yet, none with age. Among all CST and ORA parameters, CCT-CST in both eyes and A1 L in right eye had a significant correlation with gender, although this was a negligible negative correlation. Comparison of mean IOP values by different devices showed a significantly highest IOP overestimation by CST and lowest by IOP-CC compared with GAT. Also, IOP-G versus IOP-CST significantly had the lowest IOP overestimation among others. Overall, either low positive correlation or negligible correlation was found between IOP measurements by 3 instruments.CONCLUSION: The study finds the highest IOP overestimation by CST and lowest by IOP-CC compared with GAT. Overall, either low positive correlation or negligible correlation is found between IOP measurements by the 3 instruments. | Ramin Salouti Ali agha Alishiri Reza Gharebaghi Mostafa Naderi Khosrow Jadidi Ahmad Shojaei-Baghini Mohammadreza Talebnejad Zahra Nasiri Seyedmorteza Hosseini Fatemeh Heidary | 2018 | International Journal of Ophthalmology(English edition)2018，11，8： | 4 |
| 12 | Hepatitis B virus genotypes in southwest Iran: Molecular, serological and clinical outcomes显示文摘AIM: To investigate the associations of hepatitis B virus (HBV) genotype with HBeAg and anti-HBe status, alanine aminotransferase (ALT) levels and HBV-DNA detection in different groups of HBV-infected patients in southwest Iran. METHODS: A total of 89 HBsAg-positive serum samples were collected from the same number of patients. All sera were then investigated to determine HBV DNA and serological markers. For all the polymerase chain reaction (PCR)-positive samples, biochemical, histopathological assays and genotyping were also performed. RESULTS: Genotype D was the only type of HBV foundin different clinical forms of acute and chronic infections. There was a high prevalence of HBeAg-negative HBV- infected patients with chronic hepatitis (52.7%). Out of 55 patients with chronic hepatitis, seven (12.7%) were diagnosed with cirrhosis. A significant association between the presence of anti-HBe antibody and an increase in ALT level, among either HBeAg-negative (P = 0.01) or HBeAg-positive (P = 0.026) patients, was demonstrated. No significant differences were observed between the clinical outcomes of HBeAg-positive and -negative individuals (P = 0.24). CONCLUSION: Genotype D has been recognized as the only type of HBV found in different clinical forms of HBV infections, including cirrhosis, among the residents of southwest Iran. Anti-HBe possibly plays a role in disease progression in some patients with chronic hepatitis, at least for a period of disease. | Anahita Mojiri Abbas Behzad-Behbahani Mehdei Saberifirozi Maryam Ardabili Mahmood Beheshti Marjan Rahsaz Mehrdad Banihashemi Negar Azarpira Bita Geramizadeh Baharak Khadang Afsaneh Moaddeb Mojgan Ghaedi Tahereh Heidari Ardeshir Torab Alireza Salah Saeid Amirzadeh Zahra Jowkar Davood Mehrabani Samad Amini-Bavil-Olyaee Mohammad Ali Dehyadegari | 2008 | World Journal of Gastroenterology2008，14，10： | 4 |
| 13 | A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD显示文摘这份报纸通过联合控制器和线性二次的管理者(LQR ) 控制的 proportional-integral-derivative (PID ) 的想法论述一条有效混合控制途径算法。当有古典 PID 控制器的优点时,建议 LQR-PID 控制器是容易的在地震激动的结构实现。基于杜鹃搜索(CS ) 使用一个优化过程算法, LQR-PID 控制器被设计为一地震 -- 与一个活跃的调节的团装备的激动的结构更潮湿(ATMD ) 。就四地震而言,建议 LQR-PID 控制器的表演被评估。然后,结果与一个 LQR 控制器给的那些相比。模拟结果显示 LQR-PID 在排水量的术语和结构的故事的加速在结构的地震回答的减小比 LQR 控制器更好表现。 | Amir Hossein HEIDARI Sadegh ETEDALI Mohamad Reza JAVAHERI-TAFTI | 2018 | Frontiers of Structural and Civil Engineering2018，12，1： | 4 |
| 14 | Influence of B source materials on the synthesis of TiB_2-Al_2O_3 nanocomposite powders by mechanical alloying显示文摘An Al2O3-TiB2 nanocomposite was successfully synthesized by ball milling of Al,TiO2 and two B source materials of B2O3(system(1))and H3BO3(system(2)).Phase identification of the milled samples was examined by Xray di?raction.The morphology and microstructure of the milled powders were monitored by scanning electron microscopy and transmission electron microscopy.It was found that the formation of this composite was completed after 15 and 30 h of milling time in systems(1)and(2),respectively.More milling energy was required for the formation of this composite in system(2)due to the lubricant properties of H3BO3 and also its decomposition to HBO2 and B2O3 during milling.On the basis of X-ray di?raction patterns and thermodynamic calculations,this composite was formed by highly exothermic mechanically induced self-sustaining reactions(MSR)in both systems.The MSR mode took place around 9 h and 25 h of milling in systems(1)and(2),respectively.At the end of milling(15 h for system(1)and 30 h for system(2))the grain size of about 35-50 nm was obtained in both systems. | Majid Abdellahi Javad Heidari Rahman Sabouhi | 2013 | International Journal of Minerals,Metallurgy and Materials2013，20，12： | 3 |
| 15 | Echocardiography integrated ACLS protocol versus con- ventional cardiopulmonary resuscitation in patients with pulseless electrical activity cardiac arrest显示文摘客观: 在检测无脉动的电的活动(豌豆) 的可逆原因检验床边 echocardiography 的用途心脏的拘捕并且预言复活 outcomes.Methods : 在这未来的 interventional 研究,随豌豆心脏的拘捕介绍的病人被使随机化进二个组。在组 A,超声训练了医生们执行了 echocardiography 评估的紧急情况与先进心脏的生活支持(ACLS ) 一起的心脏的活动,正确的室膨胀,左室功能,心囊的 effusion/tamponade 和 IVC 尺寸协议。没有使用 echocardiography,在组 B 的病人完全经历了 ACLS 协议。机械室的活动(MVA ) 和豌豆可逆原因的证据的存在或缺席被记录。自发的循环(ROSC ) 和死亡的回来在两 groups.Results 被评估: 有平均数的 100 个病人变老(58 ±6.1 ) 年在这研究被注册。五十个病人(组 A ) 把 echocardiography 与心肺的复活(CPR ) 同时检测了。在他们之中, 7 个病人(14%) 有心囊的流出,(22%) 11 有 hypovolemia,并且(78%) 39 被揭示 MVA 的存在。在假豌豆亚群(MVA 的存在) , 43% 有 ROSC (积极的预兆的值) 并且在有心脏的停止(MVA 的缺席) 的真豌豆亚群,没有记录 ROSC (否定的预兆的值) 。在在组 B 的病人之中,没有可逆病原学被检测。在在观察的组 A 和 B (P=0.52 ) 之间的复活结果没有重要差别 .Conclusion : 床边 echocardiography 能识别豌豆的一些可逆原因。然而,与传统的 CPR 在在回响组和那些之间的幸存结果没有重要变化。 | Mojtaba Chardoli Farhad Heidari Helaleh Rabiee Mahdi Sharif-Alhoseini Hamid Shokoohi Vafa Rahimi-Movaghar | 2012 | Chinese Journal of Traumatology2012，15，5： | 3 |
| 16 | KF-Melamine Formaldehyde Resin (KF-MFR) as a Versatile and Efficient Heterogeneous Reagent for Aldol Condensation of Aldehydes and Ketones under Microwave Irradiation显示文摘KF 三聚氰胺甲醛树脂(KF-MFR ) 被表明是为在微波照耀下面的跨丁间醇醛的冷凝作用的高度有效的 heterogenious 催化剂。在这合成,各种各样的醛和酉同类在三聚氰胺甲醛树脂上面对支持的 KF 一起被压缩负担得起不同 chalcone 衍生物在对优秀收益好。KF-MFR 证明了有唯一的 termal 和化学抵抗并且没有显著损失,能在催化活动为许多连续的跑被再使用。 | Rezaie, Ramin Heidary, Mohammad Soltani Rad, Mohammad Navid Behrouz, Somayeh | 2011 | Chinese Journal of Chemistry2011，29，6： | 3 |
| 17 | Predicting changes in Bitcoin price using grey system theory显示文摘Bitcoin is currently the leading global provider of cryptocurrency.Cryptocurrency allows users to safely and anonymously use the Internet to perform digital currency transfers and storage.In recent years,the Bitcoin network has attracted investors,businesses,and corporations while facilitating services and product deals.Moreover,Bitcoin has made itself the dominant source of decentralized cryptocurrency.While considerable research has been done concerning Bitcoin network analysis,limited research has been conducted on predicting the Bitcoin price.The purpose of this study is to predict the price of Bitcoin and changes therein using the grey system theory.The first order grey model(GM(1,1))is used for this purpose.It uses a firstorder differential equation to model the trend of time series.The results show that the GM(1,1)model predicts Bitcoin’s price accurately and that one can earn a maximum profit confidence level of approximately 98%by choosing the appropriate time frame and by managing investment assets. | Mahboubeh Faghih Mohammadi Jalali Hanif Heidari | 2020 | Financial Innovation2020，6，1： | 3 |
| 18 | A comprehensive review of renewable energy resources for electricity generation in Australia显示文摘Recently,renewable energy resources and their impacts have sparked a heated debate to resolve the Australian energy crisis.There are many projects launched throughout the country to improve network security and reliability.This paper aims to review the current status of different renewable energy resources along with their impacts on society and the environment.Besides,it provides for the first time the statistics of the documents published in the field of renewable energy in Australia.The statistics include information such as the rate of papers published,possible journals for finding relative paper,types of documents published,top authors,and the most prevalent keywords in the field of renewable energy in Australia.It will focus on solar,wind,biomass,geothermal and hydropower technologies and will investigate the social and environmental impacts of these technologies. | Alireza HEIDARI Ali ESMAEEL NEZHAD Ahmad TAVAKOLI Navid REZAEI Foad H.GANDOMAN Mohammad Reza MIVEH Abdollah AHMADI Majid MALEKPOUR | 2020 | Frontiers in Energy2020，14，3： | 3 |
| 19 | Efficacy of nanofibrous conduits in repair of longsegment sciatic nerve defects显示文摘Our previous studies have histomorphologically confirmed that nanofibrous poly(3-hydroxybutyrateco-3-hydroxyvalerate) conduit can be used to repair 30-mm-long sciatic nerve defects.However,the repair effects on rat behaviors remain poorly understood.In this study,we used nanofibrous poly(3-hydroxybutyrate-co-3-hydroxyvalerate) conduit and autologous sciatic nerve to bridge 30-mm-long rat sciatic nerve gaps.Within 4 months after surgery,rat sciatic nerve functional recovery was evaluated per month by behavioral analyses,including toe out angle,toe spread analysis,walking track analysis,extensor postural thrust,swimming test,open-field analysis and nociceptive function.Results showed that rat sciatic nerve functional recovery was similar after nanofibrous poly(3-hydroxybutyrate-co-3-hydroxyvalerate) conduit and autologous nerve grafting.These findings suggest that nanofibrous poly(3-hydroxybutyrate-co-3-hydroxyvalerate) conduit is suitable in use for repair of long-segment sciatic nerve defects. | Esmaeil Biazar Saeed Heidari Keshel Majid Pouya | 2013 | Neural Regeneration Research2013，8，27： | 3 |
| 20 | Metformin alleviates cholestasis-associated nephropathy through regulating oxidative stress and mitochondrial function显示文摘Background and aim:Cholestasis-associated renal injury or cholemic nephropathy(CN)is a serious clinical problem.Previous studies mentioned that oxidative stress and mitochondrial impairment play a role in CN.There is no specific pharmacological intervention for CN.Metformin is an anti-diabetic drug administered for decades.On the other hand,novel pharmacological properties have emerged for this drug.The effect of metformin on oxidative stress parameters has been well-recognized in different experimental models.It has also been found that metformin positively affected mitochondrial function.The current study aimed to evaluate the effects of metformin in an animal model of CN.Methods:Rats underwent bile duct ligation(BDL)and were treated with metformin(250 and 500 mg/kg)for 14 consecutive days.Two weeks after the BDL operations,urine,serum,and kidney samples were collected and analyzed.Results:Markers of oxidative stress,including reactive oxygen species(ROS)formation,lipid peroxida-tion,protein carbonylation,depleted antioxidant capacity,and decreased glutathione(GSH)levels were detected in BDL animals.Moreover,mitochondrial indices,including adenosine triphosphate(ATP)level,dehydrogenase activity,mitochondrial membrane potential,and mitochondrial permeability,were impaired in the kidney of cholestatic rats.Renal histopathological alterations in cholestatic animals included tubular degeneration and interstitial inflammation,cast formation,and fibrosis.It was found that metformin significantly alleviated oxidative stress and improved mitochondrial indices in the kidney of cholestatic rats.Tissue histopathological alterations were also mitigated in metformin-treated groups.Conclusions:Metformin could be a candidate for managing CN.The nephroprotective role of metformin is primarily associated with its effects on oxidative stress parameters and mitochondrial function. | Mohammad Mehdi Ommati Hamidreza Mohammadi Khadijeh Mousavi Negar Azarpira Omid Farshad Reyhaneh Dehghani Asma Najibi Sedigheh Kamran Hossein Niknahad Reza Heidari | 2021 | Liver Research2021，5，3： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员