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Phlebotomus papatasi and Meriones libycus as the vector and reservoir host of cutaneous leishmaniasis in Qomrood District,Qom Province,central Iran

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Asian Pacific Journal of Tropical Medicine 2011年第2期4卷 97-100页

作者： Rassi Yavar Saghafipour Abedin abai mohammad reza Oshaghi mohammad Ali Rafizadeh Sina Mohebail Mehdi Yaaghobi-Ershadi mohammad reza Mohtarami Fatemeh Farzinnia Babak Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesIran Department of Emergency Ministry of Health and Medical EducationIran Department of Parasitology and Mycology School of Public HealthTehran University of Medical SciencesIran Healh Center of Qom Qom ProvinceIran

Objective:To determine the sand flies species responsible for most transmission of Leishmania major(L major) to human,as well as to determine the main reservoir hosts of the disease. Methods:Sand flies were collected using sticky papers and mounted in Puri’s medium for species *** were trapped by live Sherman *** sand flies and rodents were subjected to molecular methods for detection of leishmanial ***:Phlebotomus papatasi(***) was the common species in outdoor and indoor resting *** PCR technique only three specimens of 150 ***(2%) were found naturally infected by parasites with a band of 350 bp which is equal to the L major *** six rodents were captured by Sherman traps and *** investigation on blood smear of the animals for amastigote parasites revealed 1(3.22%) infected Meriones libycus(***). Infection of this animal to *** was confirmed by PCR against rDNA loci of the parasite. Conclusions:This is the first molecular report of parasite infection of both vector(***) and reservoir(***) to L major in the *** results indicated that *** was the primary vector of the disease and circulating the parasite between human and reservoirs and M. libycus was the most important host reservoir for maintenance of the parasite source in the area.

关键词： Cutaneous leishmaniasis Vector Reservoir Iran

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Evaluation of biological control agents for mosquitoes control in artificial breeding places

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Asian Pacific Journal of Tropical Medicine 2010年第4期3卷 276-277页

作者： Salim Abadi Yaser Vatandoost Hassan Rassi Yavar abai mohammad reza Sanei Dehkordi Ali reza Paksa Azim Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran

Objective:To evaluate the entomological impact of chlorpyrifos-methyl,Bacillus thuringiensis, and Gambusia affinis on mosquitoes control in artificial breeding ***:A Latin square design with 4 replicates was performed in order to evaluate the efficacy of chlorpyrifosmethyl, Bacillus thuringiensis,and Gambusia affinis on *** larvicide was applied at the dosage of 100 mg a.h/ha,Bacillus thuringiensis at the recommended dosage and 10 fishes per m^2 were applied at 1×1 m^2 artificial breeding *** larval densities for both anopheline and culicine were counted according to larvae /10 dippers prior and 24 h after ***: All three control agents are effective for mosquito density reduction,and the difference between the three agents and the control is significant(P<0.05).There is also significant difference among chlorpyrifos-methyl,Bacillus thuringiensis and Gambusia *** thuringiensis exhibited more reduction on mosquito larval density than fish and larvicide(P<0.05).Conclusions: Bacillus thuringiensis in comparison with two other agents is the appropriate method for larviciding in the breeding *** long term assessing for biological activities as well as monitoring and mapping of resistance is required.

关键词： Larvicide Biological control Mosquito Iran

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Phytochemistry and larvicidal activity of Eucalyptus camaldulensis against malaria vector,Anopheles stephensi

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Asian Pacific Journal of Tropical Medicine 2010年第11期3卷 841-845页

作者： Sedaghat Mohamad Medhi Sanei Dehkordi Ali reza Khnavi Mahnaz abai mohammad reza Hadjiakhoondi Abbas Mohtarami Fatemeh Vatandoost Hassan Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Departments of Pharmacognosy Faculty of PharmacologyTehran University of Medical SciencesTehranIran

Objective:To determine phytochemistry and larvicidal activity of Eucalyptus eamaldulensis against Anopheles ***:The chemical compositions of the leaf essential oils were analyzed using gas chromatography/mass spectrometry（GC/MS）.The larvicidal activity of essential oils and extract of leaf were tested against 4th instar larvae of laboratory-reared Anopheles ***:GC/MS analyses identified the presence of 28 compounds corresponding to 99.60%of the total *** main constituents in the leaf essential oil were 1,8-cineole（69.46%）,γ-Terpinene（15.10%）,α-Pinene（5.47%） and Globulol（2%）.The leaf extract and volatile oil exerted significant larvicidal activity with LC50 values of 89.85 and 397.75 ppm,*** dose-response relationships were established with the highest dose of 320 ppm essential oil extract resulted almost 100%mortality in the ***:The larvicidal properties suggest that the essential oil of plant is a potential source of valuable larvicidal compounds against malaria vector and can be used as an alternative to synthetic insecticides.

关键词： Eucalyptus camaldulensis Essential oil Larvicide Anopheles stephensi

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First detection of Leishmania infantum DNA in wild caught Phlebotomus papatasi in endemic focus of cutaneous leishmaniasis,south of Iran

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Asian Pacific Journal of Tropical Biomedicine 2013年第10期3卷 825-829页

作者： Rassi Yavar Karami Hadi abai mohammad reza M Mohebali Bakshi Hasan Oshaghi mohammad Ali Rafizadch Sina Bagherpoor Hagigi Habib Hosseini Abodolrahim Gholami Manuchehr Department of Medical Entomology & Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Department of Parasitology School of Public HealthTehran University of Medical SciencesTehranIran Ministry of Health & Medical Education TehranIran Farashband Health Center Furs ProvinceIran Unit of Communicable Diseases Control Health Center of Fars ProvinceFars ProvinceIran

Objective:To identify the vectors and reservoirs of cutaneous leishmaniasis in the endemic focus of Farashband,Fars Province,South of ***:Sticky papers and Sherman trap were used for collection of sand flies and rodents,*** chain reaction(PCR)of kDNA,ITS1-rDNA were used for identification of Leishmania parasite in sand flies as well as ***:Totally 2010 sand flies were collected and the species of Phlebotomus papatasi Scopoli was the common specimen in outdoors and indoors *** technique was employed on 130females of Phlebotomus *** of them(0.76%)was positive to parasite Leishmania major(***)and one specimen(0.76%)was positive to Leishmania *** investigation on blood smear of the animal reservoirs for amastigote parasites revealed 16(44%)infected Tatera *** of them to *** was confirmed by PCR against kDNA loci of the ***:The results indicated that Phlebotomus papatasi was the dominant species circulating two species of parasites including *** and Leishmania infantum among human and ***,Tatera indica is the only main host reservoir for maintenance of the parasite source in the area.

关键词： Leishmania infantum Leishmania major Vector Reservoir Iran

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Evaluation of bioefficacy ofα-cypermethrin in long lasting impregnated net(Interceptor~) using analytical method

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Asian Pacific Journal of Tropical Medicine 2010年第8期3卷 642-646页

作者： Vatandoost Hassan Mamivandpoor Hossein Shayeghi Mansoreh abai mohammad reza Yaghoobi-Ershadi mohammad reza Raeisi Ahmad Abtahi mohammad Rafie Fatemeh Nikpour Fatemeh Department of Medical Entomology & Vector Control School of Public Health & National Institute for Health ResearchTehran University of Medical ScienceP.O.Box 6446Tehran 14155Iran Departments of Malaria CDCMinistry of Health & Medical EducationIran

Objective:To evaluate relationship betweenα-cypermethrin residues in Interceptor~? nets by using HPTLC methods and mortality percentage in standard WHO’s method 'cone test' after repeated ***:Interceptor~? containingα-cypermethrin was provided by BASF *** washing procedure and bioassay tests were carried out according to the WHO-recommended *** vector,*** was exposed to impregnated bed net for three minutes and then mortality measured after 24 hour recovery *** analysis was carried out in chemical laboratory by using high performance thin layer chromatography ***:Result of cone bioassay method showed that washing reduced the efficacy of Interceptor~? bed net from 100%in unwashed nets to 15%at 20 *** 20 washes,nets contain(61.2±2.8) mg/m^2 resulting 15%mortality in cone *** activity was reduced when nets were ***:Results will provide an essential clue for monitoring and evaluation of bioefficacy of any long lasting impregnated bed net for quality *** of this study will be useful for *** investigators and people who wish to use pyrethroid-impregnated bed nets for malaria vector control.

关键词： Anopheles stephensi Interceptor Malaria Bioassay test Analytical method

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Larvicidal activity of essential oil and methanol extract of Nepeta menthoides against malaria vector Anopheles stephensi

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Asian Pacific Journal of Tropical Medicine 2012年第12期5卷 962-965页

作者： Khanavi Mahnaz Fallah Alireza Vatandoost Hassan Sedaghat Mahdi abai mohammad reza Hadjiakhoondi Abbas Departments of Pharmacognosy Faculty of Pharmacy and Traditional Iranian Medicine and Pharmacy Research CenterTehran University of Medical SciencesTehranIran Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Departments of Pharmacognosy Faculty of Pharmacy and Medicinal Plants Research CenterTehran University of Medical SciencesTehranIran

Objective:To investigate the larvicidai activity of essential oil and methanol extract of the Nepeta menthoides（***） against main malaria vector,Anopheles stephensi（An. stephensi）.Methods:The essential oil of planl was obtained by Clevenger type apparatus and the methanol extract was supplied with Percolation method,larvicidai activity was tested by WHO *** five fourth-instar larvae of *** were used in the larvicidai assay and four replicates were tested for each *** different concentrations of the oil and extract were tested for calculation of LC50 and LC50 ***:The LC50 and LC90 values were determined by probit ***50 was 69.5 and 234.3 ppm and LC50 was 175.5 and 419.9 ppm for the extract and essential oil ***:According to the results of this study methanolic extract of plant exhibited more larvicidai activity than essential *** could be useful for investigation of new natural larvicidai compounds.

关键词： Larvicidal activity Anopheles stephensi Nepeta menthoides Methanol extract Essential oil

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Temperature-jump tensile tests to induce optimized TRIP/TWIP effect in a metastable austenitic stainless steel

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 2025-2036页

作者： mohammad Javad Sohrabi Hamed Mirzadeh Saeed Sadeghpour Abdol reza Geranmayeh reza Mahmudi School of Metallurgy and Materials Engineering College of EngineeringUniversity of Tehran14395-515TehranIran Centre for Advanced Steels Research Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland

In the present work,plastic deformation mechanisms were initially tailored by adjusting the deformation temperature in the range of 0 to 200℃ in AISI 304L austenitic stainless steel,aiming to optimize the strength-ductility *** was shown that the combined twinning-induced plasticity(TWIP)/transformation-induced plasticity(TRIP)effects and a wider strain range for the TRIP effect up to higher strains by adjusting the deformation temperature are good strategies to improve the strength-ductility synergy of this metastable stainless *** this regard,by consideration of the observed temperature-dependency of plastic deformation,the controlled sequence of TWIP and TRIP effects for archiving superior strength-ductility trade-off was intended by the pre-designed temperature jump tensile ***,the optimum tensile toughness of 846 MJ/m^(3) and total elongation to 133% were obtained by this strategy via exploiting the advantages of the TWIP effect at 100℃ and the TRIP effect at 25℃ at the later stages of the ***,a deformation-temperature-transformation(DTT)diagram was developed for this metastable ***,based on work-hardening analysis,it was found that the main phenomenon constraining further improvement in the ductility and strengthening was the yielding of the deformation-induced α′-martensite.

关键词： metastable stainless steels transformation-induced plasticity twinning-induced plasticity stacking fault energy mechanical properties

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Movement Trend Alterations in the Periaqueductal Gray(PAG)-Employed Ratbot Navigation Are Correlated with Stimulation Parameters

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Journal of Bionic Engineering 2024年第2期21卷 866-876页

作者： Sina Khajei Abed Khorasani mohammad reza Afarinesh Vahid Sheibani Neuroscience Research Center Institute of NeuropharmacologyKerman University of Medical SciencesKerman***Iran Cognitive Neuroscience Research Center Institute of NeuropharmacologyKerman University of Medical SciencesKerman***Iran

In previous studies,Periaqueductal Gray(PAG)stimulation was used to stop ratbots from *** to the homology between the PAG and the intercollicular nucleus,which has been used for forward movement in birds,we investigated the possibility of PAG application to induce forward locomotion for the first *** a corridor maze,the traveled distances via PAG electrical stimulation were examined in nine Wistar male rats during three sessions.A custom-designed stimulator was developed to apply the *** results showed reductions in responses to stimulation over ***,the traveled distances had negative slopes during the consecutive trials(in 8 out of the 9 rats),and the slope mean was significantly different from *** was a strong correlation between the stimulation parameters(electric Charge per Phase(CPP)and the Number of Pulses(NP))and the observed *** negative Movement Slopes(MS)were highly correlated with the CPP and the NP,as the Pearson's linear correlation coefficients were−0.87 and−0.79,*** MS-CPP coefficients of determination(R-squared)were also between 0.76 and *** addition,the MS-NP coefficients of determination were between 0.63 and ***,it is concluded that the electrical stimulation parameters influence the behavioral outcomes ***,the PAG area may be considered a suitable candidate for forward locomotion control in the future if the area is harnessed effectively to prevent undesirable chaotic behaviors.

关键词： Periaqueductal Gray(PAG) Navigation Ratbot Animal-robot Forward locomotion Movement slope

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Interplay between temperature-dependent strengthening mechanisms and mechanical stability in high-performance austenitic stainless steels

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2182-2188页

作者： mohammad Javad Sohrabi Hamed Mirzadeh Saeed Sadeghpour Milad Zolfipour Aghdam Abdol reza Geranmayeh reza Mahmudi School of Metallurgy and Materials Engineering College of EngineeringUniversity of Tehran14395-515 TehranIran Centre for Advanced Steels Research Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland Department of Mechanical Engineering College of EngineeringUniversity of Tehran14395-515 TehranIran

The effects of deformation temperature on the transformation-induced plasticity(TRIP)-aided 304L,twinning-induced plasti-city(TWIP)-assisted 316L,and highly alloyed stable 904L austenitic stainless steels were compared for the first time to tune the mechan-ical properties,strengthening mechanisms,and strength-ductility *** this purpose,the scanning electron microscopy(SEM),electron backscattered diffraction(EBSD),X-ray diffraction(XRD),tensile testing,work-hardening analysis,and thermodynamics calcu-lations were *** induced plasticity effects led to a high temperature-dependency of work-hardening behavior in the 304L and 316L stainless *** the deformation temperature increased,the metastable 304L stainless steel showed the sequence of TRIP,TWIP,and weakening of the induced plasticity mechanism;while the disappearance of the TWIP effect in the 316L stainless steel was also ***,the solid-solution strengthening in the 904L superaustenitic stainless steel maintained the tensile properties over a wide temper-ature range,surpassing the performance of 304L and 316L stainless *** this regard,the dependency of the total elongation on the de-formation temperature was less pronounced for the 904L alloy due to the absence of additional plasticity *** results re-vealed the importance of solid-solution strengthening and the associated high friction stress for superior mechanical behavior over a wide temperature range.

关键词： austenitic stainless steels mechanical behavior stacking fault energy metastability mechanical twinning

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Numerical investigation of supercontinuum generation and optical frequency combs in Si N-based PCF with high nonlinear coefficient

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Optoelectronics Letters 2024年第3期20卷 163-170页

作者： mohammad reza Alizadeh Mahmood Seifouri Saeed Olyaee Faculty of Electrical Engineering Shahid Rajaee Teacher Training UniversityTehranIran Nano-photonics and Optoelectronics Research Laboratory(NORLab) Shahid Rajaee Teacher Training UniversityTehranIran

In this paper, a photonic crystal fiber(PCF) with a dispersion-engineered and high nonlinear coefficient has been designed for supercontinuum generation(SCG) and frequency comb generation(FCG). The proposed PCF has a Si_(3)N_(4) rod in the core. This rod provides more optical confinement in the core by increasing the refractive index of the core. This high confinement reduces the effective mode area of PCF and thus increases the nonlinear coefficient.

关键词： optical fiber nonlinear

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