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| 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 | Effect of ultrasonic irradiation on rheological properties of asphaltenic crude oils显示文摘In this work, the rheological changes of several crude oil samples exposed to ultrasonic waves for different time intervals in addition to the effect of temperature on viscosity behavior of heavy crude oils were investigated using a series of steady shear flow and oscillatory tests. The colloidal structural evolutions of flocs in oil samples were illustrated by analysis of the size distribution of flocculated asphaltene particles (confocal microscopy tests). The rheological investigations indicate that the ultrasonic irradiation dissolved heavy components in crude oil. After ultrasonic treatment, the Kouh-e-Mond crude oil was found to be pseudoplastic. In addition, confocal microscopy confirms that there was an optimum duration for ultrasonic irradiation, at which the viscosity and flocculation rate of asphaltenic crude oils reduced to the minimum values. The optimum was found to be approximately 40 min for the Kouh-e-Mond crude oil. Experimental results illustrate that the ultrasonic irradiation could disaggregate heavy colloid components in crude oil, and breakdown of asphaltene molecules would only occur in a specific time interval of irradiation. Also according to the temperature sweep test, the oil temperature rise caused by ultrasonic irradiation was not the main reason for rheological changes of the crude oil and this alteration may be due to physical and chemical phenomena induced by sonication in crude oil. | MOUSAVI Seyed Mohammadreza RAMAZANI Ahmad NAJAFI Iman DAVACHI Seyed Mohammad | 2012 | Petroleum Science2012，9，1： | 10 |
| 3 | Trauma care system in Iran显示文摘客观在伊朗的损害的高负担要求一个全面损伤照顾系统的建立。这份报纸的目的是关于部件和功能描述损伤系统的当前的地位。在一个损伤系统的所有部件的损伤系统的当前的地位通过与损伤专家和政策制造者一起的专家面板和半结构化的会见被描述的方法。当前结果,各种各样的组织涉及损害,而是损伤的一条综合系统途径的预防,管理和康复是相当缺乏的。在通过媒介,交通规定加强,医院照顾和 prehospital 服务的公共教育的区域有进行中的进步。同时,关于高风险组资助,立法和教育有差距。教育和前面的训练标准上的问题衬里医疗队和持续教育和评估还有待于被探讨。损伤登记在一些省被驾驶了,但是作为它需要开发得好的基础结构(关于职员,维护,金融资源) ,它还没在我们损伤照顾的系统被建立。看起来,有损伤的问题之一在伊朗在乎的结论是在损伤系统组织之中的协作的缺乏。尽管损伤病人的临床的管理在最近的十年在我们的国家改善了,减少损害的负担在一个损伤系统的上下文要求一条组织途径到损伤的预防和管理。 | Moussa Zargar Seyed Mohammad Reza Kalantar Motamedi Mojgan Karbakhsh Seyed Mohammad Ghodsi Vafa Rahimi-Movaghar Farzad Panahi Soheil Saadat Ali Khaji Seyed Mahdi Davachi Sarah Ganji Mahmoud Khodabandeh Shahab Abdollahi Far Morteza Abdollahi Mohammad Reza Zarei | 2011 | Chinese Journal of Traumatology2011，14，3： | 3 |
| 4 | Recombinant HCV core protein and the secretion of associatedcytokines(IL-6, TNF-alpha and IFN-gamma) in immunized mice显示文摘 | Torbati E Ghassab R K Davachi N D | 2013 | Pak J Bi- ol Sei2013，16，24： | 1 |
| 5 | Comparison of four different protocols of I-131 therapy for treating single toxic thyroid nodule显示文摘 | Zakavi SR Mousavi Z Davachi B | 2009 | Nucl Med Commun2009，30，2： | 1 |
| 6 | A novel ovine oocyte recovery method from slaughterhouse material显示文摘 | Davachi N D Zeinoaldini S Kohram H | 2012 | Small Ruminant Research2012，106，23： | 1 |
| 7 | The effects of calcitriol on improvement of insulin resistance,ovulation and comparison with metformin therapy in PCOS patients:a randomized placebo-controlled clinical trial显示文摘 | Bonakdaran S Mazloom Khorasani Z Davachi B | 2012 | Iran J Reprod Med2012，10，5： | 1 |
| 8 | Investigating thermal degradation, crystallization and surface behavior of L-lactide, glycolide and trimethylene carbonate terpolymers used for medical applications显示文摘 | Davachi S M Kaffashi B Roushandeh J M | 2012 | Mater Sci Eng C-Mater Biol Appl2012，32，2： | 1 |
| 9 | Evalua- tion of the sonographic features of metastatic cervical lymph nodes in patients with head and neck malignancy显示文摘 | Imani Moghaddam M Davachi B Mostaan LV | 2011 | J Cranio- facSurg2011，22，6： | 1 |
| 10 | Menaory for time and place contributes to en- hanced confidence in memories for emotional events 显示文摘 | RIMMELE U DAVACHI L PHELPS E A | | Emotion0，12，4： | 1 |
| 11 | Item,context and relational episodic encoding in humans显示文摘 | Davachi L | 2006 | Curr Opin Neurobiol2006，16，： | 1 |
| 12 | How the hippocampus preserves order:the role of prediction and context显示文摘 | Davachi L Du Brow S | 2015 | Trends Cogn Sci2015，19，2： | 1 |
| 13 | Evidence for area CA1 as a match/mismatch detector: a high-resolu- tion fMRI study of the human hippocampus显示文摘 | Duncan K Ketz N Inati S J Davachi L | 2012 | Hippo- campus2012，22，： | 1 |
| 14 | Differential activation of the caudate nucleus in primates performing spatial and nonspatial working memory tasks 显示文摘 | Levy R Friedman HR Davachi L | 1997 | J Neurosci1997，17，10： | 1 |
| 15 | Dental Radiographic Findings of Malignant Osteopetrosis: Report of Four Cases 显示文摘 | M Imanimoghaddam B Davachi S Nemati | 2009 | Iran J Radiol2009，6，3： | 1 |
| 16 | The ensemble that plays together, stays together 显示文摘 | Davachi L | 2004 | Hippocampus2004，14，1： | 1 |
| 17 | Perirhinal and parahippocampal cortices differentially contribute to later recollection of object and scene related event details 显示文摘 | Staresina B P Duncan K D Davachi L | 2011 | J Neuroscience2011，31，24： | 1 |
| 18 | Multiple routes to memory:distinct medial temporal lobe processes build item and source memories显示文摘 | Davachi L Mitchell JP Wagner AD | | 0，，： | 1 |
| 19 | Novel hybrid biocomposites for tendon grafts:The addition of silk to polydioxanone and poly(lactide-co-caprolactone)enhances material properties,in vitro and in vivo biocompatibility显示文摘Biopolymers play a critical role as scaffolds used in tendon and ligament(TL)regeneration.Although advanced biopolymer materials have been proposed with optimised mechanical properties,biocompatibility,degradation,and processability,it is still challenging to find the right balance between these properties.Here,we aim to develop novel hybrid biocomposites based on poly(p-dioxanone)(PDO),poly(lactide-co-caprolactone)(LCL)and silk to produce high-performance grafts suitable for TL tissue repair.Biocomposites containing 1-15%of silk were studied through a range of characterisation techniques.We then explored biocompatibility through in vitro and in vivo studies using a mouse model.We found that adding up to 5%silk increases the tensile properties,degradation rate and miscibility between PDO and LCL phases without agglomeration of silk inside the composites.Furthermore,addition of silk increases surface roughness and hydrophilicity.In vitro experiments show that the silk improved attachment of tendon-derived stem cells and proliferation over 72 h,while in vivo studies indicate that the silk can reduce the expression of pro-inflammatory cytokines after six weeks of implantation.Finally,we selected a promising biocomposite and created a prototype TL graft based on extruded fibres.We found that the tensile properties of both individual fibres and braided grafts could be suitable for anterior cruciate ligament(ACL)repair applications. | Behzad Shiroud Heidari Emma Muiños Lopez Emma Harrington Rui Ruan Peilin Chen Seyed Mohammad Davachi Benjamin Allardyce Rangam Rajkhowa Rodney Dilley Froilán Granero-Moltó Elena M.De-Juan-Pardo Minghao Zheng Barry Doyle | 2023 | Bioactive Materials2023，，7： | 0 |
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