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Nature-inspired chiral metasurfaces for circular polarization detection and full-Stokes polarimetric measurements

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Light(Science & Applications) 2019年第1期8卷 494-504页

作者： Ali Basiri Xiahui Chen Jing Bai pouya Amrollahi Joe Carpenter Zachary Holman Chao Wang Yu Yao School of Electrical Computer and Energy EngineeringArizona State UniversityTempeAZ 85281USA Centre for Photonic Innovation Arizona State UniversityTempeAZ 85281USA Biodesign Centre for Molecular Design&Biomimetics Arizona State UniversityTempeAZ 85281USA

The manipulation and characterization of light polarization states are essential for many applications in quantum communication and computing,spectroscopy,bioinspired navigation,and *** metamaterials and metasurfaces facilitate ultracompact devices for circularly polarized light generation,manipulation,and ***,we report bioinspired chiral metasurfaces with both strong chiral optical effects and low insertion *** experimentally demonstrated submicron-thick circularly polarized light filters with peak extinction ratios up to 35 and maximum transmission efficiencies close to 80% at near-infrared wavelengths(the best operational wavelengths can be engineered in the range of 1.3-1.6μm).We also monolithically integrated the microscale circular polarization filters with linear polarization filters to perform full-Stokes polarimetric measurements of light with arbitrary polarization *** the advantages of easy on-chip integration,ultracompact footprints,scalability,and broad wavelength coverage,our designs hold great promise for facilitating chip-integrated polarimeters and polarimetric imaging systems for quantum-based optical computing and information processing,circular dichroism spectroscopy,biomedical diagnosis,and remote sensing applications.

关键词： polarization circular polar

Rhus coriaria L. increases serum apolipoprotein-A1 and high-density lipoprotein cholesterol levels： a double-blind placebo-controlled randomized clinical trial

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Journal of Integrative Medicine 2018年第1期16卷 45-50页

作者： Zahra Hajmohammadi Mojtaba Heydari Majid Nimrouzi pouya Faridi Mohammad Javad Zibaeenezhad Gholamhossein Ranjbar Omrani Mesbah Shams Research Center for Traditional Medicine and History of Medicine Shiraz University of Medical Sciences Shiraz 98713 Iran Department of Traditional Medicine School of Medicine Shiraz University of Medical Sciences Shiraz 98713 Iran Department of Phytopharmaceuticals School of Pharmacy and Pharmaceutical Sciences Research Center Shiraz University of Medical Sciences Shiraz 98713 Iran Cardiovascular Research Center Shiraz University of Medical Sciences Shiraz 98713 Iran Endocrine and Metabolism Research Center Shiraz University of Medical Sciences Shiraz 98713 Iran

Background： Lipid-lowering effect ofRhus coriaria L. （Rhus） has been investigated in multiple animal stud- ies with promising results. Nonetheless, its clinical efficacy has not been adequately examined. Objective： The aim of this study was to evaluate the lipid-lowering effects of Rhus among patients with hyperlipidemia. Design, setting, participants and interventions： The study was designed as a two-arm, double-blind placebo-controlled randomized clinical trial, using a parallel design. Eighty patients with primary hyper- lipidemia were randomly assigned to receive Rhus capsules or placebo for 6 weeks. Main outcome measures： The serum lipid levels, apolipoprotein-A1 （Apo-A1） and apolipoprotein-B （Apo-B） were measured. Results： Mean serum high-density lipoprotein cholesterol （HDL-C） and Apo-Al levels were significantly increased in the Rhus group, compared with the placebo group, after 6 weeks of intervention （P= 0.001）. The analysis of covariance test including age, gender, body mass index （BMI）, and smoking as co-variables revealed that the increase in HDL-C and Apo-A1 levels remained significant, and increases in HDL-C were dependent on the increase in Apo-A1 levels. No significant difference was observed between Rhus and placebo groups in terms of mean reductions in total cholesterol, low-density lipopro- tein cholesterol and triglyceride levels; however, more significant improvement was observed among obese patients （BMI≥ 30 kg/m^2）. Conclusion： The study showed significant increases in HDL-C and Apo-Al levels in response to Rhus sup- plementation in patients with hyperlipidemia. Trial registration： *** ID： NCT02295293.

关键词： Dyslipidemias Rhus coriaria LLipids Dietary supplements Plants Apolipoproteins A Randomized controlled trial Double-blind method

Nanofibrous nerve conduits for repair of 30-mm-long sciatic nerve defects

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Neural Regeneration Research 2013年第24期8卷 2266-2274页

作者： Esmaeil Biazar Saeed Heidari Keshel Majid pouya Hadi Rad Melody Omrani Nava Mohammad Azarbakhsh Shirin Hooshmand Department of Biomaterial Engineering Tonekabon Branch Islamic Azad University Student Research Committee Proteomics Research Center Faculty of Paramedical Sciences Shahid Beheshti University of Medical Sciences Department of Tissue Engineering School of Advanced Technologies in Medicine Tehran University of Medical Sciences Department of Medical Sciences Tonekabon Branch Islamic Azad University Faculty of Medical Sciences Babol University of Medical Sciences

It has been confirmed that nanofibrous poly（3-hydroxybutyrate-co-3-hydroxyvalerate） nerve conduit can promote peripheral nerve regeneration in rats. However, its efficiency in repair of over 30-mm-long sciatic nerve defects needs to be assessed. In this study, we used a nanofibrous poly（3-hydroxybutyrate-co-3-hydroxyvalerate） nerve conduit to bridge a 30-mm-long gap in the rat sciatic nerve. At 4 months after nerve conduit implantation, regenerated nerves were macroscopi- cally observed and histologically assessed. In the nanofibrous graft, the rat sciatic nerve trunk had been reconstructed by restoration of nerve continuity and formation of myelinated nerve fiber. There were Schwann cells and glial cells in the regenerated nerves. Masson＇s trichrome staining showed that there were no pathological changes in the size and structure of gastrocnemius muscle cells on the operated side of rats. These findings suggest that nanofibrous poly（3-hydroxybutyrate-co-3- hydroxyvalerate） nerve conduit is suitable for repair of long-segment sciatic nerve defects.

关键词： neural regeneration peripheral nerve injury sciatic nerve artificial conduit nanofiber poly(3-hydr-oxybutyrate-co-3-hydroxyvalerate) macroscopic observation histology grants-supported paper neuroregeneration

The healing effects of herbal preparations from Sambucus ebulus and Urtica dioica in full-thickness wound models

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Asian Pacific Journal of Tropical Biomedicine 2017年第5期7卷 421-427页

作者： Esmaeil Babaei Mohammad Hossein Asghari Fatemeh Mehdikhani Milad Moloudizargari Emad Ghobadi Seyedeh Rokhsane Hosseini pouya Department of Medical Sciences Sari BranchIslamic Azad UniversityP.O.Box 48161-19318SariIran Department of Pharmacology Faculty of MedicineBabol University of Medical SciencesBabolIran Department of Toxicology and Pharmacology Faculty of PharmacyTehran University of Medical SciencesTehranIran Faculty of Medicine Urmia University of Medical SciencesUrmiaIran Student Research Committee Department of ImmunologySchool of MedicineShahid Beheshti University of Medical SciencesTehranIran Food and Cosmetic Health Research Center Hormozgan University of Medical SciencesBandar AbbasIran

Objective:To investigate the healing effects of two herbal ***:For this purpose,106 wistar rats were divided into 9 groups including a control,eucerine,phenytoin,Urtica dioica(***)(2%),***(5%),Sambucus ebulus(***)(2%),***(5%),combination(2%),and combination(5%)*** control group remained untreated,the eucerin and phenytoin groups were considered as the negative and positive controls respectively,and the remaining groups received different concentrations of the *** thickness wounds were *** healing process of the wounds was investigated on day 7,14 and 21 of the *** factors including the number of fibroblasts,new vessel formation(angiogenesis),thickness of the granulomatous tissues(GT),and the overlying epithelium were ***:Among the studied groups,all of the treatment groups were significantly different from the control,eucerin,and phenytoin groups in a positive manner with regard to all studied factors(P 0.05).However,the best results were observed with the ***(2%) and the combination 2% groups(P 0.05).Conclusions:Topical ointments prepared from the extracts of *** and *** and their combination possess strong wound healing *** is postulated that a synergistic effect may exist between the two extracts since the combination 2% showed better results than the sole extracts.

关键词： Wound healing Sambucus ebulus Urtica dioica Ointment Skin Rat

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胎儿异常超声诊断图谱

胎儿异常超声诊断图谱

Introduce a Novel PCA Method for Intuitionistic Fuzzy Sets Based on Cross Entropy

2009年

作者：（德）Michael entezami…等

本书用精彩的超声图谱简要介绍胎儿畸形诊断的专业知识，适应当前的市场需求，也是当前超声领域的热点与焦点问题。该书重点突出，主要突出了各种畸形的超声图像特点及要点，使读者一目了然。

关键词：畸胎超声波诊断图谱

来源：汇雅图书（南通市图书馆... 评论

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Applied Mathematics 2015年第6期6卷 990-995页

作者： Sonia Darvishi Adel Fatemi pouya Faroughi Department of Statistics North Tehran Branch Islamic Azad University Tehran Iran Department of Statistics Sanandaj Branch Islamic Azad University Sanandaj Iran

In this paper, a new method for Principal Component Analysis in intuitionistic fuzzy situations has been proposed. This approach is based on cross entropy as an information index. This new method is a useful method for data reduction for situations in which data are not exact. The inexactness in the situations assumed here is due to fuzziness and missing data information, so that we have two functions (membership and non-membership). Thus, method proposed here is suitable for Atanasov’s Intuitionistic Fuzzy Sets (A-IFSs) in which we have an uncertainty due to a mixture of fuzziness and missing data information. For the demonstration of the application of the method, we have used an example and have presented a conclusion.

关键词： PCA Cross Entropy Intuitionistic Fuzzy Sets Discrimination Information Measure A-IFSs

Bearing Capacity Assessment of Collapsible Soils Improved by Deep Soil Mixing Using Finite Element Method

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Open Journal of Geology 2016年第9期6卷 1055-1068页

作者： pouya Kavandi Alireza Firoozfar Mohammad Amin Hemmati Young Researchers and Elite Club Zanjan Branch Islamic Azad University Zanjan Iran University of Zanjan Zanjan Iran Department of Civil Engineering Zanjan Branch Islamic Azad University Zanjan Iran

Problematic soils usually cause considerable problems to engineering projects. As an example, soil structure collapse caused by moisture increment or rising underground water level results in huge settlements. This type of problematic soil, named collapsible soil, can cause dramatic problems and should be amended where exists. Today, the use of different techniques for soil reinforcement and soil improvement is widely used to treat soil properties. One of these methods is Deep Soil Mixing (DSM) method. This method becomes more important in the cases of studying and examining collapsible soils. In this research, the settlement of amended collapsible soils, applying deep soil mixing method, is examined. The experiments show that soil amendment using this method, well prevents the settlement of collapsible soils giving rise to bearing capacity.

关键词： Collapsible Soil Settlement Deep Soil Mixing Finite Element Method

Labeling Algorithm for Face Detection Using Skin and Hair Characteristics

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Journal of Electronic Science and Technology 2012年第2期10卷 135-141页

作者： pouya Ghofrani Zahra Neshat Hassan Aghaeinia the Electronic Engineering Department Amirkabir University of Technology (Tehran Polytechnic)

This research presents an algorithm for face detection based on color images using three main components： skin color characteristics, hair color characteristics, and a decision structure which converts the obtained information from skin and hair regions to labels for identifying the object dependencies and rejecting many of the incorrect decisions. Here we use face color characteristics that have a good resistance against the face rotations and expressions. This algorithm is also capable of being combined with other methods of face recognition in each stage to improve the detection.

关键词： Edge detection hair region label object dependencies skin region threshold.

Presentation of Empirical Equations for Estimating Internal Friction Angle of GW and GC Soils in Mashhad, Iran Using Standard Penetration and Direct Shear Tests and Comparison with Previous Equations

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Open Journal of Geology 2015年第5期5卷 231-238页

作者： pouya Salari Gholam Reza Lashkaripour Mohammad Ghafoori Department of Geology Ferdowsi University of Mashhad International Branch Mashhad Iran Department of Geology Ferdowsi University of Mashhad Mashhad Iran

Presentation of empirical equations for estimating engineering properties of soils is a simple, low cost and widely-used method. One of the major concerns in using these equations is evaluating their accuracy in different conditions and regions which often lead to doubts about obtained results. Most of these equations were derived in special laboratories, different climate conditions and in soils with different geotechnical and geological engineering properties and were generalized to other conditions. The main question is that whether these methods are also applicable to other conditions. Using local equations and narrowing the usage range of various methods based on each region’s properties are appropriate methods to solve these problems. This leads to simplified and faster analysis and high reliability in the obtained results. In this paper, empirical equations were derived to estimate internal friction angle, based on SPT numbers of Mashhad City’s soils in Iran, using SPT and direct shear tests results from 50 samples (25 GW and 25 GC soil samples). The results showed similar values for predicted?φ?values by SPT test and?φ?values determined by direct shear tests.

关键词： Internal Friction Angle GW and GC Soil Direct Shear Test SPT Test