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Effects of dieback on the vegetative, chemical, and physiological status of mangrove forests, Iran

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Journal of Arid Land 2023年第11期15卷 1391-1404页

作者： Vahid Farashi KAHNOUJ Marzieh REZAI Rasool mahdavi Maryam MOSLEHI Saiedeh ESKANDARI Natural Resources Engineering Group Desert Management and ControlUniversity of HormozganHormozganBandarabass ***Iran Natural Resources Engineering Group Faculty of Agriculture and Natural ResourcesUniversity of HormozganHormozganBandarabass ***Iran Research Division of Natural Resources Hormozgan Agricultural and Natural Resources Research and Education CenterAgricultural ResearchEducation and Extension Organization(AREEO)Bandarabbas ***Iran Forest Research Division Research Institute of Forests and RangelandsAgricultural ResearchEducation and Extension Organization(AREEO)Tehran ***Iran

Mangrove forests are valuable resources in tropical and subtropical regions,which have been faced dieback due to various human activities including rapid expansion of shrimp farming,urban development,and pollution,as well as natural factors such as rising sea level,increasing air temperature,drought,and sharp decrease in ***,the mechanisms of dieback of mangrove forests are not well ***,this research aimed to assess the vegetative,chemical,and physiological status of grey mangrove(Avicennia marina(Forsk.)Vierh.)forests at different intensities of dieback in the Hormozgan Province,Iran.A total of 40 plots categorized into four dieback intensities(severe,medium,low,and control)were randomly selected for monitoring,and various parameters related to vegetative,chemical,and physiological status of grey mangrove forests were *** results revealed that the control group had the highest tree density,seedling density,vitality levels,aerial root density,and aerial root ***,as dieback severity increased,a decrease in demographic and vegetative parameters of trees and seedlings was observed in the dieback *** amounts of heavy metals(lead,cadmium,and nickel)in the sediment,roots,and leaves of grey mangrove trees at different dieback levels indicated that lead levels were the highest in the sediment,roots,and leaves in the severe dieback *** the same time,the control had the lowest *** concentrations in the sediment followed the pattern of severe dieback>moderate dieback>low dieback>control with no significant differences in the roots and *** amounts in all three parts,i.e.,sediment,roots,and leaves showed the highest levels in the severe dieback ***,metal level analysis in the organs of grey mangrove trees at different dieback levels revealed that lead and nickel were more abundant in the root organ compared with the *** contrast,the leaf organ exhibited the highes

关键词： nickel forests grey

The combined effect of ultrasound treatment and leek (Allium ampeloprasum) extract on the quality properties of beef

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Food Bioscience 2022年第3期47卷 1060-1069页

作者： Ali Mehrabani Ashkan Jebelli Javan Mohammad Ali Hesarinejad Ali mahdavi Mahnoosh Parsaeimehr Department of Food Hygiene Faculty of Veterinary MedicineSemnan UniversitySemnanIran Department of Food Processing Research Institute of Food Science and Technology (RIFST)MashhadIran

One of the most important physicochemical properties of meat is its *** impact of Leek (Allium ampeloprasum ) extract and ultrasound on meat quality and molecular weight distribution of Longissimus lumborum muscles was *** have been treated with ultrasound (100 and 300 W during 10,20,and 30 min) and Leek-derived exogenous proteases (16.9 and 33.8U/g) simultaneously and *** combined effect of enzyme and ultrasound in 10 and 20 min increased the pH *** was also increased the proteolytic activity of *** meat quality,the filtering residues,cooking loss,shear force,and hardness were reduced;water-binding capacity,emulsion capacity,and emulsion stability were *** electrophoretic pattern of myofibrillar proteins showed the muscle fibers were severely degraded in the combined *** can be concluded that this process could be used as an alternative to the chemical tenderizing agents in the meat industry.

关键词： Leek extract Proteolytic activity Quality properties Tenderization Ultrasound-assisted enzyme treatment

Montanide ISA-720 and Naloxone in HBsAg Vaccine Formulation:Cytokine Profiling and Monitoring of Long-Lasting Humoral Immune Responses

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Biomedical and Environmental Sciences 2022年第9期35卷 792-803页

作者： Mina Mirzaee Setareh Haghighat Bahareh Golkaran Fatemeh Asgarhalvaei Rayhaneh Mirzaee Morteza Taghizadeh Mohammad Ali Savoji Behzad Esfandiari Mehdi mahdavi Department of Microbiology Faculty of Advanced Sciences&TechnologyTehran Medical SciencesIslamic Azad University(IAUPS)TehranIran Department of Biotechnology Faculty of Advanced Sciences&TechnologyPharmaceutical Sciences BranchIslamic Azad UniversityTehran-Iran(IAUPS) Department of Medical vaccine Razi Vaccine and Serum Research InstituteAgricultural ResearchEducation and Extension Organization(AREEO)KarajIran Department of Epidemiology and Biostatistics Pasteur Institute of IranTehranIran Department of Laboratory Animal Science Pasteur Institute of IranKarajIran Advanced Therapy Medicinal Product(ATMP)Department Breast Cancer Research CenterMotamed Cancer InstituteAcademic Center for EducationCulture and Research(ACECR)TehranIran Recombinant Vaccine Research Center Tehran University of Medical SciencesTehranIran Department of Immunology Pasteur Institute of IranTehranIran Immunotherapy Group The Institute of Pharmaceutical Sciences(TIPS)Tehran University of Medical SciencesTehranIran

Objective This study aimed to investigate the effects of Montanide ISA-720 and Naloxone(NLX)in Hepatitis B surface antigen(HBsAg)vaccine formulation on cytokine and long-lasting antibody *** First,the HBsAg was formulated in Montanide ISA-720 adjuvant and Naloxone at 5 and 10mg/*** experimental mice were immunized three times at a 2-week interval,and then IL-4,IL-2,TNF-α,and IFN-γcytokines;long-lasting IgG antibody responses 220 days after the last shot;and IgG1/IgG2a isotypes were assessed by *** The HBsAg-Alum group exhibited the highest IL-4 cytokine response among the experimental groups,whereas NLX in HBsAg-MON720 vaccine formulation did not affect cytokine *** addition,NLX in Alum-based vaccine suppressed IL-4 cytokine response and increased the IL-2/IL-4 cytokine ***,HBsAg-MON720 was more potent than HBsAg-Alum in the induction of antibody responses,and NLX in Alum-and MON720-based vaccines induced long-lasting antibody *** NLX in Alum-based vaccine decreased IL-4 cytokine response,increased IL-2/IL-4 cytokine ratio,and improved long-lasting humoral immune responses in both vaccine ***,the adjuvant activity of NLX in the vaccine formulation depends on the type of adjuvant and the nature of the antigen in the vaccine formulation.

关键词： HBsAg Vaccine Naloxone Montanide ISA-720 Long-lasting humoral response

SYNTHESIS AND APPLICATIONS OF CROSS-LINKED POLY(DIALLYLDIMETHYL AMMONIUM CHLORIDE) AND ITS DERIVATIVE COPOLYMERS AS EFFICIENT PHASE TRANSFER CATALYST FOR NUCLEOPHILIC SUBSTITUTION REACTIONS

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Chinese Journal of Polymer Science 2011年第2期29卷 165-172页

作者： Hossein mahdavi Mahdi Mahmoudian School of Chemistry University College of ScienceUniversity of TehranTehranIran

Cross-linked poly（diallyldimethylammonium chloride） and its derivative copolymers were synthesized and used as phase transfer catalyst in the nucleophilic substitution reaction especially halogen exchange *** additi... 详细信息

关键词： Poly(diallyldimethylammonium chloride) Phase transfer catalyst Nucleophilic substitution reaction Halogen exchange reaction

Ignition Conditions for Simulated Fuel Pellets in Degenerate Plasma

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Plasma Science and Technology 2013年第4期15卷 323-328页

作者： M. mahdavi A. GHOLAMI Physics Department Mazandaran University

A high-density, low-temperature plasma can be obtained during the compression phase in inertial confinement fusion. When high density and low temperature are reached in the plasma in the fast ignition approach, the plasma electrons can be degenerate. The electronic stopping of a slow ion is smaller than that given by the classical formula, because some transitions between the electron states are forbidden. In this case, bremsstrahlung emission is strongly sup- pressed and the ignition temperature becomes lower than that in classical plasma. The equations that predict the behavior of these plasmas are different from the classical ones, and this is the main factor in the process of decreasing the ignition temperature of the plasma. In this work, physical conditions of ignition are studied by calculating the effect of radiation loss on the ignition temperature for a simulated fuel pellet, （D/Tx/3Hey）, in degenerate plasma. In fast ignition, the energy needed for obtaining high densities is minimized and the gain can be increased considerably.

关键词： inertial fusion degenerate plasma ignition temperature bremsstrahlungemission

Differential expression of zinc accumulation during two growing seasons of Acacia victoriae

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Journal of Forestry Research 2015年第3期26卷 663-671页

作者： Ali mahdavi Khadijeh Khermandar Department of Forest Science Faculty of AgricultureUniversity of Ilam P.O. Box 69315-516 Ilam Iran Department Range and Watershed Management Faculty of Agriculture University of Ilam P.O. Box 69315-516 IlamIran

It is important to understand seasonal heavy metal accumulation in different parts of plants in order to develop the best phytoremediation practices for con- taminated soils. For this purpose we exposed, 1 year old A. victoriae seedlings to ZnSO4 in 4 different concentrations： 0, 50, 250 and 500 mg Zn L-1 for 45 days over two growing seasons. Subsequently, bioaccumulation of Zn in different plant tissues （roots, shoots and leafs） was assessed by Atomic Absorption Spectroscopy （AAS） for two peri- ods. In addition, various growth attributes （dry biomass, shoot and root lengths, plant appearance） and functional traits （leaf area, chlorophyll a, b and total） were measured. The accumulation of Zn was influenced by the Zn con- centration in the growth medium and the number of growing seasons. The amounts of Zn concentrated in the root tissues might indicate A. victoriae as a good option for phytostabilization of soils contaminated by Zn. We rec- ommend that if A. victoriae is used for phytoextraction purposes, then it should be harvested at the end of the first growing season （fall） because at this time the concentra- tions of Zn in the above-ground parts will be maximal.

关键词： Heavy metal Phytoremediation Phytoextracfion Phytostabilization

Underlying solvent-based factors that influence permanent porosity in porous liquids

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Nano Research 2022年第4期15卷 3533-3538页

作者： Hamidreza mahdavi Huacheng Zhang Lauren K.Macreadie Cara M.Doherty Durga Acharya Stefan J.DSmith Xavier Mulet Matthew R.Hill Department of Chemical Engineering Monash UniversityClaytonVIC 3800Australia CSIRO Manufacturing Private Bag 10Clayton SouthVIC 3169Australia School of Chemistry University of SydneySydney 2006Australia

Porous liquids(PLs)offer the potential to combine the ready handling and mature industry status of liquid absorbents,with the high permanent porosity of metal organic *** be functional,these nanocomposites need to satisfy a number of performance parameters,such as stability and viscosity of the porogen-solvent combination,avoiding solvent penetration into metal organic framework(MOF)pores,suitable capacities,and kinetics for gas *** this work,we systematically investigate the component materials to elucidate the parametric space where stable photoluminescence(PL)can be *** this situation,deeper conclusions were able to be drawn with regard to the influence of hydrophobicity/philicity on the properties of the resulting *** imidazolate frameworks(ZIFs)were combined with a range of solvents varying in steric bulk,to deliver CO_(2)sorption capacities as high as 4.2 mmol·g^(-1)at 10 *** findings may have broader implications for future investigations of this tantalising field of nanocomposites.

关键词： zeolitic imidazolate frameworks porous liquids permanent porosity gas sorption

Investigation of thermal behavior of energetic and non-energetic binders on luminous efficiency of high performance miniature flares

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Defence Technology（防务技术） 2019年第2期15卷 193-197页

作者： Saeid Bagherpour Mohammad mahdavi Ebrahim Abedini Department of Chemistry Malek-ashtar University of Technology

Miniature flares containing magnesium/sodium nitrate compounded with different binders were studied for increasing luminosity and luminous efficiency in various fuel oxidizer ratio and flare *** polyester, Bisphenol-A epoxy resin, calcium resinate, and nitrocellulose were used as binders for construction the flares. Experimental results showed that luminous efficiency was higher for polyester based flares. Due to the difference in decomposition progress of various binders and the exothermic reaction between binder and oxidizer the luminous efficiency of the mixtures were 31000,28900, 27800 and 25100 cd respectively for polyester, epoxy, calcium resinate, and nitrocellulose. It was found that nitrocellulose as an energetic binder produces the highest light intensity in comparison to other binders, but the burning rate is higher and the burning time is lower than the other *** analysis of four binders showed that the heat of reactions was directly related to the amount of light output and luminosity.

关键词： Miniature flare Illuminating compositions Luminous efficiency Binder

Prediction of hydro-suction dredging depth using data-driven methods

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Frontiers of Structural and Civil Engineering 2021年第3期15卷 652-664页

作者： Amin mahdavi-MEYMAND Mohammad ZOUNEMAT-KERMANI Kourosh QADERI Water Engineering Department Shahid Bahonar University of KermanKerman***Iran

In this study,data-driven methods(DDMs)including different kinds of group method of data handling(GMDH)hybrid models with particle swarm optimization(PSO)and Henry gas solubility optimization(HGSO)methods,and simple equations methods were applied to simulate the maximum hydro-suction dredging depth(h_(s)).Sixty-seven experiments were conducted under different hydraulic conditions to measure the h_(s).Also,33 data samples from three previous studies were *** model input variables consisted of pipeline diameter(d),the distance between the pipe inlet and sediment level(Z),the velocity of flow passing through the pipeline(u_(0)),the water head(H),and the medium size of particles(D_(50)).Data-driven simulation results indicated that the HGSO algorithm accurately trains the GMDH methods better than the PSO algorithm,whereas the PSO algorithm trained simple simulation equations more *** all used DDMs,the integrative GMDH-HGSO algorithm provided the highest accuracy(RMSE=7.086 mm).The results also showed that the integrative GMDHs enhance the accuracy of polynomial GMDHs by∼14.65%(based on the RMSE).

关键词： sedimentation water resources dam engineering machine learning heuristic