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新型磺酸功能化吡啶盐酸盐离子液体催化剂用于六氢喹啉合成(英文)

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催化学报 2013年第10期34卷 1936-1944页

作者： Ardeshir Khazaei Mohammad Ali Zolfigol Ahmad Reza Moosavi-zare Javad Afsar abdolkarim zare Vahid Khakyzadeh Mohammad Hassan Beyzavi Faculty of Chemistry Bu-Ali Sina University Department of Chemistry University of Sayyed Jamaleddin Asadabadi Department of Chemistry Payame Noor University Institut für Chemie und Biochemie Freie Universitt Berlin

Sulfonic acid functionalized pyridinium chloride [pyridine-SO3 H]Cl has been synthesized as a novel Brnsted acidic ionic liquid and characterized on the basis of its FT-IR,1H and 13C NMR,MS,ther-mogravimetry,and derivative thermogravimetry *** material has also been used as a highly efficient,homogeneous,and reusable catalyst for the preparation of hexahydroquinolines according to the one-pot multi-component condensation of arylaldehydes,dimedone(5,5-dimethylcyclohexane-1,3-dione),β-ketoesters,and ammonium acetate under solvent-free conditions.

关键词： Brnsted acidicionic liquid Sulfonic acid functionalized pyridinium chloride [Pyridine-SO3 H]Cl Hexahydroquinoline Solvent-free synthesis

Efficient Synthesis of β-Acetamido Ketones and Esters Using Aluminum Chloride as an Inexpensive and Green Catalyst

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Chinese Journal of Chemistry 2012年第2期30卷 345-352页

作者： Mohammad Ali,Zolfigol Ardeshir,Khazaei Mohammad,Mokhlesi abdolkarim,zare Maliheh,Safaiee Fatemeh,Derakhshan-Panah Hassan,Keypour Ahmad,Ali Dehghani-Firouzabadi Maria,Merajoddin Faculty of Chemistry Bu-Ali Sina UniversityHamedan***Iran Department of Chemistry Payame Noor UniversityPO BOX 19395-3697 TehranIran College of Science Islamic Azad UniversityHamedan BranchIran

Aluminum chloride （AlCl3） efficiently catalyzes one-pot multicomponent condensation of enolizable ketones or alkyl acetoacetates with aldehydes, acetonitrile and acetyl chloride to afford β-acetamido ketone or ester derivatives in high to excellent yields and in relatively short reaction times. Moreover, by this synthetic method, some novel β-acetamido ketones and esters （i.e. one complex structure） are prepared.

关键词： β-acetamido ketone β-acetamido ester aluminum chloride enolizable ketone synthetic methods mul- ticomponent reactions

Prediction of overbreak depth in Ghalaje road tunnel using strength factor

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International Journal of Mining Science and Technology 2018年第4期28卷 671-676页

作者： Ako Daraei Shokrollah zare Civil Engineering Department Soran University School of Mining Petroleum & Geophysics Engineering Shahrood University of Technology

It is well known that the overbreak caused by the blasting damage during tunnel excavation increases costs associated with filling the collapsed area with shotcrete and results in filing of a claim by the contractor. This paper outlines a new approach for prediction the overbreak depth during tunnel construction. Hence, firstly excavation damage zone(EDZ) are determined by average specific charge in each zone. Numerical modelling is used to simulate the EDZ around tunnel boundary and the overbreak depth are calculated by the rock strength factor. The predicted overbreak depth compared with observed field data from a case study. The results show that there exists an approximately up to 40% difference between the prediction and the observed volume of overbreak depth. Therefore, the method can be well used to predict the overbreak depth to estimate more precision of shotcrete and concrete volumes in tunnelling cost during design phase.

关键词： Overbreak Blasting Excavation damaged zone Strength factor Tunneling

Protective efficacy of dark chocolate in letrozole-induced ovary toxicity model rats: hormonal, biochemical, and histopathological investigation

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Journal of Traditional Chinese Medicine 2022年第5期42卷 741-748页

作者： Naser Mirazi Sheida Hesami Alireza Nourian abdolkarim Hosseini Department of Biology Faculty of Basic SciencesBu-Ali Sina UniversityHamedan ***Iran Department of Pathobiology Faculty of Veterinary ScienceBu-Ali Sina UniversityHamedan ***Iran Department of Animal Sciences and Biotechnology Faculty of Life Sciences and BiotechnologyShahid Beheshti UniversityTehran ***Iran

OBJECTIVE: To assess the protective effect of dark chocolate(DC) on the letrozole-induced rat model of polycystic ovary syndrome(PCOS). METHODS: In this experimental study, 32 female Wistar rats, weighing(200 ± 20) g, were randomly categorized into 4 groups including control, letrozole(1 mg·kg-1·d-1), metformin(500 mg·kg-1·d-1) along with letrozole, and DC(500 mg·kg-1·d-1) along with letrozole for 28 d by oral gavage. Twenty-four hours after the last supplementation, direct blood sampling was taken from the heart to obtain blood serum for evaluation of sex hormones and gonadotropins, oxidative parameters, inflammatory cytokines, and ovarian tissue was examined for histology. RESULTS: The DC treatment significantly improved PCOS signs, as demonstrated by the significant restoration of ovarian morphology and physiological functions as compared with the letrozole group. DC treatment also decreased ovarian interleukin-1β and tumor necrosis factor-α levels and improved total oxidative/antioxidative status as compared with the letrozole group. CONCLUSIONS: Treating the animals with DC could alleviate the PCOS symptoms and reduced the toxic effects of letrozole in the ovary. This effect may mediate through antioxidant and antiinflammatory properties.

关键词： chocolate letrozole metformin polycystic ovary syndrome antioxidants anti-inflammatory agents

Influence of soaking time in deep cryogenic treatment on the microstructure and mechanical properties of low-alloy medium-carbon HY-TUF steel

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International Journal of Minerals,Metallurgy and Materials 2016年第6期23卷 658-666页

作者： Ahmad zare S.R.Hosseini Department of Materials Engineering Maleke-ashtar University of Technology

The influence of soaking time in deep cryogenic treatment on the tensile and impact properties of low-alloy medium-carbon HY-TUF steel was investigated in this study. Microstructural studies based on phase distribution mapping by electron backscatter diffraction show that the deep cryogenic process causes a decrease in the content of retained austenite and an increase in the volume fraction of η-carbide with increasing soaking time up to 48 h. The decrease in the content of retained austenite from ~1.23vol% to 0.48vol% suggests an isothermal martensitic transformation at 77 K. The η-type precipitates formed in deep cryogenic-treated martensite over 48 h have the Hirotsu and Nagakura orientation relation with the martensitic matrix. Furthermore, a high coherency between η-carbide and the martensitic matrix is observed by high-resolution transmission electron microscopy. The variations in macrohardness, yield strength, ultimate tensile strength, and ductility with soaking time in the deep cryogenic process show a peak/plateau trend.

关键词： low alloy steel medium carbon steel cryogenic treatment microstructure mechanical properties fractography

The Anxiolytic and Antidepressant Effect of Stachys Lavandulifolia in the Experimental Pentylenetetrazole-Induced Rat Model of Acute Seizure

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World Journal of Traditional Chinese Medicine 2024年第1期10卷 114-120页

作者： Vahid Azizi Farzin Allahyari abdolkarim Hosseini Department of Animal Sciences Faculty of Life Sciences and BiotechnologyShahid Beheshti UniversityTehranIran

Objective:In traditional medicine,Stachys lavandulifolia or mountain tea has been used in the treatment of arthritis and rheumatoid arthritis.A leaf extract from this plant is also thought to be effective in treating epilepsy as well as other neurological *** assess the effect of *** extract(SLE),rats were exposed to a stress and anxiety model caused by *** and Methods:A challenge dose of pentylenetetrazole(PTZ)(60 mg/kg)was used to induce seizures in male Wistar rats(200-250 g).Animal treated with an intraperitoneal injection of either SLE(50 mg/kg)or sodium valproate(100 mg/kg)alone or in combination 30 min before PTZ *** effect of stress and anxiety was assessed using an open field test(OFT),forced swim test(FST),and elevated plus maze(EPM).At the end of the experiment,anesthesia was used to euthanize rats,and their blood serum was collected for measurements of glutathione(GSH),malondialdehyde(MDA),and GSH peroxidase(GPx).Results:In contrast to the control group,those treated with PTZ exhibited depressive *** 50 mg/kg,SLE provided protection against seizures induced by *** also reduced seizure-induced stress and anxiety,significantly improving FST,EPM,and OFT compared with the PTZ-treated *** decreasing MDA levels and restoring the antioxidant enzymes GSH and GPx,SLE treatment protects against seizure-induced anxiety and ***:SLE inhibits oxidative stress damage and seizure-induced stress by inhibiting seizures'inhibitory effects.

关键词： Anxiety behavior depression oxidative stress traditional medicine

Experimental study on local scour around single oblong pier fitted with a collar in a 180 degree flume bend

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International Journal of Sediment Research 2010年第3期25卷 304-312页

作者： Alireza MASJEDI Mahmood SHAFaEI BEJESTAN abdolkarim ESFANDI Islamic Azad University Ahwaz Branch Shahid Chamran University Khuzestan Science and Research Branch Islamic Azad University

In this work, investigation on the development of local scour around an oblong pier in a 180 degree flume bend is presented. Scour hole can cause failure of the bridge especially during the river floods. In this study, the use of oblong collars for reducing the effects of local scour at a bridge pier is presented together with the time aspect of the scour development. Tests were conducted using one oblong pier in positions of 60degree under one flow conditions. The study was conducted using a physical hydraulic model operated under clear-water conditions in cohesionless bed material. In this study, the time development of the local scour around the oblong pier fitted with and without collar plates was studied. Investigated was the effect of size and elevation collar on the time development of scour and its efficacy at preventing scour at a bridge pier. The time development of the scour hole around the model pier with and without a collar installed was compared with similar studies on bridge piers. The results of the model study indicated that the maximum depth of scour is highly dependent on the experimental duration. It was observed that, as the minimum depth of scour occurs for the square collar at width of 3B placed at elevation of 0.1B below the bed and the size of a collar plate increases, the scour decreases. Measuring depth of scouring based on experimental observation, an empirical relation is developed with regression coefficient 95%.

关键词： Oblong pier Scour depth Time development Collar 180 degree bend

Multicomponent synthesis of dihydropyridines catalyzed by L-proline

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Chinese Chemical Letters 2011年第5期22卷 531-534页

作者： Leila zare Mohammad Nikpassand Department of Organic Chemistry Islamic Azad University-Rasht BranchRashtIran

Multicomponent synthesis of mono and bis 4-substituted-1,4-dihydropyridines from aldehydes,dimedone and ammonium acetate in the presence of an efficient recyclable catalyst,L-proline,in high yield and short reaction t... 详细信息

关键词： Multicomponent Dihydropyridines Dimedone L-Proline

The roles of polymer-graphene interface and contact resistance among nanosheets in the effective conductivity of nanocomposites

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Applied Mathematics and Mechanics(English Edition) 2023年第11期44卷 1941-1956页

作者： Y.zare K.Y.RHEE Department of Mechanical Engineering(BK21 Four) College of EngineeringKyung Hee UniversityYongin 17104Republic of Korea

The effective conductivity of graphene-based nanocomposites is suggested by the characteristics of polymer-filler interfacial areas as well as the contact resistance between the neighboring *** interfacial properties are expressed by the effective levels of the inverse aspect ratio and the filler volume ***,the resistances of components in the contact regions are used to define the contact resistance,which inversely affects the effective *** obtained model is utilized to predict the effective conductivity for some *** discrepancy of the effective conductivity at various ranks of all factors is *** interfacial conductivity directly controls the effective conductivity,while the filler conductivity plays a dissimilar role in the effective conductivity,due to the incomplete interfacial adhesion.A high operative conductivity is also achieved by small contact distances and high interfacial ***,big contact diameters and little tunnel resistivity decrease the contact resistance,thus enhancing the effective conductivity.

关键词： polymer nanocomposite operative conductivity graphene interfacial property contact region