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Evaluation of Patients with Severe Aortic Stenosis after TAVI with Self-Expandable vs. Balloon-Expandable Devices

World Journal of Cardiovascular Diseases 2023年第10期13卷 633-645页

作者： Mohammad Nourizadeh Seifollah Abdi farideh roshan ali Najmeh Assadinia Mehdi Nourizadeh Mohammad Emami Elham Barati Amir Taha Asarian Department of Interventional Cardiology Cardiovascular Intervention Research Center Rajaiee Cardiovascular Medical and Research Center Iran University of Medical Sciences Tehran Iran Fellowship of Echocardiography Department of Cardiology Cardiovascular Research Center Dey Hospital Tehran Iran Department of Pathology Masih Shahid Beheshti University of Medical Science Tehran Iran Cardiovascular Disease Research Center Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran Kings Bournemouth UK

Background: The introduction of transcatheter aortic valve implantation (TAVI) for the treatment of severe aortic stenosis (SAS) has expanded the therapeutic possibilities for successfully managing SAS in cases with intermediate and high surgical risks. However, the complications and outcomes of new devices have not been studied enough. Hence, the purpose of this study is to evaluate the midterm results of the Core Valve and Evolute R self-expandable (SE) devices versus the Edwards SAPIEN balloon-expandable (BE) devices. Methods and Material: This was a quasi-experimental study conducted in Tehran, Iran, from May 2012 to June 2017. SAS patients who were not ideal candidates for surgery were randomly assigned to either SE or BE groups. For each patient, a questionnaire, including four sections comprised of Basic characteristics, echocardiographic, angiographic, and Computed Tomography (CT) scan data was filled. TAVI was followed by echocardiography a week later and after three months they were reevaluated by another questionnaire. Results: The total number of patients was 60. The mean ages of patients undergoing the procedure with SE or BE devices were 81.2 ± 8 and 79.8 ± 7, respectively. Mortality occurred in 20% of the patients (5 cases in the SE group and 7 cases in the BE);mortality causes were 66.6 % cardiac and 33% non-cardiac. Moderate to severe Paravalvular leakage in both groups did not differ significantly. The mortality rate was 5 (41.6%) in the SE group versus 7 (58.3%) in the BE group (P > 0.05). Conclusion: In conclusion, the BE group did not experience fewer paravalvular leaks in comparison with the SE. Morbidity and mortality between the BE and the SE groups did not differ significantly.

关键词： TAVI Balloon-Expandable Valves Self-Expandable Valves Mortality Aortic Stenosis

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Synthesis of iron oxide nanoparticles via sonochemical method and their characterization

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Particuology 2011年第1期9卷 95-99页

作者： Amir Hassanjani-roshan Mohammad Reza Vaezi ali Shokuhfar Zohreh Rajabali Engineering Department Islamic Azad University Karaj Branch Karaj Iran Division of Advanced Materials Materials and Energy Research Center Karaj Iran Advanced Materials and Nanotechnology Research Center Faculty of Mechanical Engineering K.N. Toosi University of Technology Tehran Iran

Preparation of iron oxide （α-Fe2O3） nanoparticles was carried out via a sonochemical process. The process parameters sucb as temperature, sonication time and power of ultrasonication play important roles in the size and morphology of the final products. The iron oxide nanoparticles were characterized by trans- mission electron microscopy, X-ray powder diffraction, and thermogravimetric and differential thermal analyses. From transmission electron microscopy observations, the size of the iron oxide nanoparticles is estimated to be significantly smaller than 19 nm. X-ray diffraction data of the powder after annealing provide direct evidence that the iron oxide was formed during the sonochemical process.

关键词： Sonochemical Nanoparticles Iron oxides Hematite

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Functionalized Graphene Oxide with Bismuth and Titanium Oxide Nanoparticles for Efficiently Removing Formaldehyde from the Air by Photocatalytic Degradation-Adsorption Process

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Journal of Analysis and Testing 2023年第4期7卷 444-458页

作者： Mohsen Mohammadi Asl Hamid Shirkhanloo Nabiollah Mansouri Seyed ali Reza Haji Seyed Mirzahosseini farideh Atabi Department of Environmental Engineering Faculty of Natural Resource and EnvironmentScience and Research BranchIslamic Azad UniversityTehran 14778-93855Iran Research Institute of Petroleum Industry(RIPI) West BoulevardOlympic VillageTehran 14857-33111Iran

Formaldehyde(HCHO)is formed through the oxidation of volatile organic compounds(VOCs)and can cause human *** oxide and titanium oxide nanoparticles-functionalized nanographene oxide(Bi_(2)O_(3)/TiO_(2)@NGO)were used to rapidly remove the HCHO from the air by a photocatalytic degradation-adsorption process(PC-DAP).The formaldehyde vapor in pure air was generated in a dynamic system within a chamber,and flowed over Bi_(2)O_(3)/TiO_(2)@NGO adsorbent inside a fixed-bed quartz reactor(FBQR)under UV irradiation at optimized conditions(250C).At atmospheric pressure,the flow rate and gas hourly space velocity(GHSV)were adjusted to 300 mL/min and 100-450 L/h,*** radicals of HCHO and nanographene oxide(NGO)were generated through the UV-photochemical process,enhancing the chemical adsorption through the radicals’*** the other hand,the semi-degradation process by catalytic oxidation process converted some HCHO into raw materials of CO_(2)and H_(2)O,while the unconverted HCHO was physically absorbed by ***,the HCHO concentration in the outlet system was measured by gas chromatography with a flame ionization detector(GC-FID)after derivatizing formaldehyde with 2,4-dinitrophenylhydrazine(DNPH)and ***,efficient removal of HCHO from the air,the removal efficiency of more than 95%,was achieved through physical/chemical adsorption and the *** mean removal efficiencies for HCHO with Bi_(2)O_(3)-TiO_(2)@NGO,TiO_(2)@NGO,Bi_(2)O_(3)@NGO,and NGO were 98.7%,73.6%,61.8%,and 11.4%,respectively(n=10,RSDalidated by spiking different concentrations of standard HCHO into pure air.

关键词： Formaldehyde removal Air Functionalized graphene oxide UV radiation Photocatalytic degradation-adsorption process

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Effects of polyethyleneimine-functionalized MCM-41 on flame retardancy and thermal stability of polyvinyl alcohol

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Particuology 2015年第2期13卷 14-21页

作者： Meisam Shabanian Mehdi Khoobi farideh Hemati Hossein ali Khonakdar Khalil Faghihi Udo Wagenknecht Seyed esmaeil Sadat ebrahimia Abbas Shafiee Department of Medicinal Chemistry Faculty of Pharmacy and Pharmaceutical Sciences Research CenterTehran University of Medical Sciences Faculty of Chemistry and Petrochemical Engineering Standard Research Institute(SRI) Department of Chemistry Faculty of ScienceArak University Iran Polymer and Petrochemical Institute Leibniz-Institute of Polymer Research

Hyperbranched polyethylenimine （PEl）-functionalized mesoporous silica （MCM@PEI） was synthesized and used to produce poly（vinyl alcohol）（PVA） nanocomposites. The modified nanofiller was charac- terized with infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption. When compared with pure meso- porous silica （MCM）, the MCM@PEI nanoparticles exhibited better dispersion in the PVA matrix. The effects of MCM@PEI on the thermal and flame properties of PVA nanocomposites were also studied. Improvement in the thermal properties was confirmed by enhanced thermal stability and char yield. Incorporation of MCM@PEI in PVA led to a significant drop in the heat release rate and the total heat release.

关键词： Nanocomposite PVA Nanofiller MCM-41

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Synthesis, Crystal Structure and Theoretical Calculations of N-Benzyl-1-(5-(3-chlorophenyl)-1,3,4-oxadiazol-2-yl)cyclopentanamine

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Chinese Journal of Structural Chemistry 2018年第5期37卷 679-692页

作者： ali Ramazania FATEMEH Zeinali Nasrabadi YOUNES Hanifehpour SANG WOO Jooc MASOOME Sheikhi KATARZYNA Slepokura TADEUSZ Lis farideh Gouranlou Department of Chemistry University of Zanjan PO Box 45195-313 Zanjan Iran Department of Chemistry Faculty of Valiasr Tehran Branch Technical and Vocational University Tehran Iran School of Mechanical Engineering Yeungnam University Gyeongsan 712- 749 Republic of Korea Young Researchers and Elite Club Gorgan Branch Islamic Azad University Gorgan Iran Faculty of Chemistry University of Wroclaw 14 Joliot-Curie St. 50-383 Wroclaw Poland Department of Biosctence and Biotechnology Malek Ashtar University of Technology Tehran Iran

N-benzyl-1-（5-（3-chlorophenyl）-1,3,4-oxadiazol-2-yl）cyclopentanamine was synthesized via one-pot reaction of appropriate benzylamine, cyclopentanone,（N-isocyanimino）triphenylphosphorane and m-chlorobenzoic acid. The quantum theoretical calculations for crystal structure were performed by density functional theory（DFT/B3LYP/6-311＋G＊）. From the optimized structure, geometric parameters were obtained and experimental measurements were compared with the calculated data. Frontier molecular orbitals（FMOs）, total density of states（DOS）, molecular electrostatic potential（MEP）, molecular properties, natural charges, NMR parameters and NBO analysis for the product were investigated by theoretical calculations.

关键词： N-isocyaniminotriphenylphosphorane cyclopentanone m-chlorobenzoic acid 1 3 4-oxadiazole aza-Wittig reaction DFT NBO analysis

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Use of quince seed mucilage edible films containing natural preservatives to enhance physico-chemical quality of rainbow trout fillets during cold storage

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Food Science and Human Wellness 2014年第2期3卷 65-72页

作者： Mohammad Jouki Seyed ali Mortazavi farideh Tabatabaei Yazdi Arash Koocheki Naimeh Khazaei Department of Food Science and Technology Faculty of AgricultureFerdowsi University of MashhadP.O.Box 91775-1163MashhadIran Department of Food Science and Technology Faculty of AgricultureUniversity of UrmiaUrmiaIran

In this study quality changes of rainbow trout fillet wrapped with quince seed mucilage QSM film incorporated with 0–2%(V/V)thyme or oregano essential oil,as natural preservatives,during storage of 18 d at 4◦C were *** control and wrapped fillet samples were analyzed for texture,lipid oxidation,and color *** 6 d of storage,a significantly increasing trend was observed for lipid oxidation in control *** values(PV)varied for all treatments and remained lower than 8 meq/kg throughout the storage time(18 d).The lowest PV was obtained in fillets wrapped with QSM film containing 2%oregano essential *** to control samples,fillet samples wrapped with QSM films presented a significant reduction in pH after 12 d(P<0.05).L*and b*color parameters were increased while parameter a*was decreased linearly for all treatments during the storage time.

关键词： fillet treatment film

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Visual performance of four types of diffractive multifocal intraocular lenses and a review of articles

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International Journal of Ophthalmology(English edition) 2021年第3期14卷 356-365页

作者： farideh Doroodgar Feizollah Niazi Azad Sanginabadi Farid Karimian Sana Niazi Cyrus alinia Mohammad ali Javadi Negah Aref Ophthalmic Research Center Shahid Bcheshti University of Medical ScienceTehran ***Iran Tehran University of Medical Science Tchran ***Iran Department of Ophthalmology Shahid Beheshti University of Medical Sciences and Health ServicesChamran HighwayTehran ***Iran Department of Optometry Iran University of Medical Science Tehran ***Iran Department of Public Health Urmia University of Medical SciencesUrmiaWest Azerbaijan ***Iran

AIM: To compare the clinical outcomes of a variety of multifocal intraocular lenses(MIOLs) in patients diagnosed with presbyopia or cataracts. METHODS: This clinical trial study included 141 patients(282 eyes) with different MIOLs implantation. The Symfony(60 eyes), the Re STOR(100 eyes), the AT LISAtri(60 eyes), and the Pan Optix(62 eyes) intraocular lenses were evaluated in this prospective interventional study. The near, intermediate, and distant visual acuities, contrast sensitivity, and defocus curve were measured as valid criteria. To statistically analyze the results, we used the Statistical Package for Social Science software, the non-parametric Wilcoxon signed-rank t, the one-way analysis of variance and the Tukey’s post-hoc test in our analysis. Moreover, we conducted a detailed literature search on the Pub Med database in English about MIOLs, in total 59 studies were included in this review ***: The four approaches did not show any significant difference in the best-corrected distance visual acuity(P>0.05). The defocus curves at the contrast of 100% showed that trifocal IOLs had better intermediate performance than the bifocal IOL(Pality of vision.

关键词： multifocal lens visual acuity cataract presbyopia

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Optoelectronic Properties, Elastic Moduli and Thermoelectricity of SrAlGa： An Ab Initio Study

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Chinese Physics Letters 2014年第4期31卷 134-138页

作者： roshan ali G. Murtaza Y. Takagiwa R. Khenata Haleem Uddin H. Ullah S. A. Khan Department of Physics Government Post Graduate Jahanzeb College Saidu sharif Swat Pakistan Materials Modeling Lab Department of Physics Islamia College University Peshawar Department of Advanced Materials Science The University of Tokyo Japan LPQ3M Laboratory Institute of Science and Technology University of Mascara Algeria

Half-Heusler compounds are an impressive class of materials with a huge potential for different applications such as in future energy, especially in the fields of thermoelectrics and solar cells. We present ab fnitio total energy calculations within the modified Becke-Johnson generalized gradient approximation （mBJ-GGA） to obtain the physical properties of SrAlGa compounds. The structural, elastic, acoustic, electronic, chemical bonding, optical, and thermoelectric properties are calculated and compared with the available calculation data. The SrAlGa is found to be a small-band-gap （0.125-0.175 eV） material, suitable for thermoelectric applications with a relatively high Seebeck coefficient. Also, SrAIGa has the potential in the optoelectronic applications due to high optical conductivity and reflectivity in the infrared and visible region of electromagnetic spectra.

关键词： Study Optoelectronic fields

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Three-Dimensional Analysis of Buried Steel Pipes under Moving Loads

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Open Journal of Geology 2017年第1期7卷 1-11页

作者： Bahram Navayi Neya Mehdi alijani Ardeshir ali Aghajani Delavar Mohammad Zaman roshan Bakhsh Faculty of Civil Engineering Babol Noshirvani University of Technology Babol Iran Mazandaran Gas Company Sari Iran

The three-dimensional response of buried steel pipes under vehicle loads is investigated using the finite element analysis. The analysis is conducted using the finite element program ABAQUS. The effects of the vehicle parameters, pipeline parameters and soil parameters on the response of the buried pipeline were discussed. The results indicate that the maximum principal stresses in a buried pipe under vehicle loads are significant for burial depths of less than 1 m. The maximum principal stresses of the buried pipeline decrease as the burial depth, vehicle velocity and surrounding soil’s elasticity modulus increase. For small burial depths, the stresses in buried pipes caused by vehicle motion in the direction normal to the pipe axis are more critical. However, the effects of motion direction are insignificant when the burial depth and the surrounding soil’s elasticity modulus increase. As the diameter of a buried pipe decreases, the maximum principal stresses increase.

关键词： Buried Steel Pipeline Vehicles Load Motion Direction Numerical Simulation Stress

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Stable Organic Solar Cells Enabled by Simultaneous Hole and Electron Interlayer Engineering

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Energy & Environmental Materials 2024年第5期7卷 313-320页

作者： Wisnu Tantyo Hadmojo Furkan H.Isikgor Yuanbao Lin Zhaoheng Ling Qiao He Hendrik Faber Emre Yengel roshan ali Abdus Samad Ryanda Enggar Anugrah Ardhi Sang Young Jeong Han Young Woo Udo Schwingenschlögl Martin Heeney Thomas D.Anthopoulos KAUST Solar Center(KSC) Physical Sciences and Engineering Division(PSE)King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Department of Chemistry and Centre for Processable Electronics Imperial College LondonLondon W120BZUK Department of Chemistry Korea UniversitySeoul 02841Korea

The development of high-performance organic solar cells(OSCs)with high operational stability is essential to accelerate their ***,our understanding of the origin of instabilities in state-of-the-art OSCs based on bulk heterojunction(BHJ)featuring non-fullerene acceptors(NFAs)remains ***,we developed NFA-based OSCs using different charge extraction interlayer materials and studied their storage,thermal,and operational *** the high power conversion efficiency(PCE)of the OSCs(17.54%),we found that cells featuring self-assembled monolayers(SAMs)as hole-extraction interlayers exhibited poor *** time required for these OSCs to reach 80%of their initial performance(T_(80))was only 6h under continuous thermal stress at 85℃in a nitrogen atmosphere and 1 h under maximum power point tracking(MPPT)in a *** MoO_(x)between ITO and SAM enhanced the T_(80)to 50 and~15 h after the thermal and operational stability tests,respectively,while maintaining a PCE of 16.9%.Replacing the organic PDINN electron transport layer with ZnO NPs further enhances the cells'thermal and operational stability,boosting the T_(80)to 1000 and 170 h,*** work reveals the synergistic roles of charge-selective interlayers and device architecture in developing efficient and stable OSCs.

关键词： interlayers metal oxide organic solar cells self-assembled monolayers stability

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