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Phenology and population dynamics of sand flies in a new focus of visceral leishmaniasis in Eastern Azarbaijan Province,North western of Iran

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Asian Pacific Journal of Tropical Medicine 2011年第8期4卷 604-609页

作者： Teimour Hazratian Yavar Rassi mohammad Ali Oshaghi mohammad reza yaghoobi-ershadi Esmael Fallah mohammad reza Shirzadi Sina Rafizadeh Department of Medical Entomology and Vector Control School of Public HeallhTehran University of Medical SciencesTehranIran Department of Parasitology School of MedicineMedical Science/University of TabrizIran Zoonosis Department Ministry of Health& Medical Education Violence and Injury Prevention Safety Promotion Office Emergency Management CenterMinistry of Health & Medical Education

Objective:To investigate species composition,density,accumulated degree-day and diversity of sand flies during April to October 2010 in Azarshahr district,a new focus of visceral leishmaniasis in north western ***:Sand flies were collected using sticky traps biweekly and were stored in 96%*** specimens were mounted in Puri’s medium for species identification using valid keys of *** density was calculated by the formula: number of specimens/m of sticky traps and number of specimens/ number of ***-day was calculated as follows:(Maximum temperature + Minimum temperature)/2—Minimum *** indices of the collected sand flies within different villages were estimated by the Shannon- weaver formula(H’=sum form(i=1) to s Pi log_e Pi ).Results:Totally 5 557 specimens comprising 16 Species(14 Phlebotomus,and 2 Sergentomyia) were *** activity of the species extended from April to *** sand-flies in resting places were Phlebotomus papatasi, Phlebotomus sergenti and Phlebotomus *** monthly average density was 37.***.41.1, 40.23,30.38 and 30.67 for Almalodash,Jaragil,Segaiesh,Amirdizaj and Germezgol villages, *** degree-day from early January to late May was approximately 289 degree *** minimum threshold temperature for calculating of accumulated degree-day was 17.32℃.According on the Shannon-weaver(H’),diversity of sand flies within area study were estimated as 0.917,1.867,1.339,1.673,and 1.562 in Almalodash,Jaragil,Segaiesh,Amirdizaj and Germezgol villages,***:This study is the first detailed research in terms of species composition,density,accumulated degree-day and diversity of sand flies in an endemic focus of visceral leishamaniasis in Azarshahr *** population dynamics of sand flies in Azarshahr district were greatly affected by climatic *** to this study the highest activity of the collected sand fly species occurs at the ter

关键词： Sand fly Visceral leishmaniasis Diversity Degree day Density Iran

Diversity of Phlebotomine sand flies(Diptera: Psychodidae) in mountainous and plain areas of an endemic focus of anthroponotic cutaneous leishmaniasis in Iran

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Asian Pacific Journal of Tropical Biomedicine 2020年第5期10卷 201-207页

作者： Saideh Yousefi Ali reza Zahraei-Ramazani Yavar Rassi mohammad reza Aflatoonian mohammad reza yaghoobi-ershadi Abbas Aghaei-Afshar Amir Ahmad Akhavan Masoumeh Amin Azim Paksa Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Sirjan Faculty of Medical Sciences SirjanIran Research Center of Tropical and Infectious Diseases Kerman University of Medical SciencesKermanIran Leishmaniasis Research Center Kerman University of Medical SciencesKermanIran Department of Parasitology Faculty of MedicineTabriz University of Medical ScienceTabrizIran

Objective: To determine the diversity of sand flies in different biotopes of mountainous and plain areas of Bam County as the most infected focus of anthroponotic cutaneous leishmaniasis in southeast Iran, and synanthropic index of Phlebotomus sergenti Parrot, and Phlebotomus papatasi Scopoli as the main vectors of cutaneous leishmaniasis in ***: Sand flies were captured once a month using sticky traps in domestic, peri-domestic, agricultural, and sylvatic biotopes in the plain and mountainous areas. Alpha diversity indices, including richness, evenness, Shannon-Wiener;beta diversity indices(Jaccard’s and Sorensen’s similarity indices) and synanthropic index were calculated. Results: A total of 2 664 specimens of 9 sand fly species were collected from mountainous(47%) and plain(53%) areas. Species richness, species evenness, and Shannon-Wiener indices were obtained as 9, 0.637, and 1.399, respectively in the mountainous area. Phlebotomus sergenti and Phlebotomus papatasi were constant species with the synanthropic index of-18.463 and-29.412, respectively. In addition, species richness, species evenness, and Shannon-Wiener indices were 4, 0.690, and 0.956, respectively in the plain area. Phlebotomus sergenti and Phlebotomus papatasi were dominant species with the synanthropic index of +9.695 and +36.207, respectively. Similarity indices were low among different biotopes of plain and mountainous ***: A basic knowledge about the diversity of sand flies in various biotopes is essential to design sound control programs. Biodiversity and synanthropic indices of sand flies are different in plain and mountainous areas due to the difference in biotic and abiotic factors between the two areas.

关键词： Sand flies Diversity Richness Evenness Synanthropic index Iran

Salivary gland antigens of laboratory-bred Phlebotomus sergenti and their immunogenicity in human volunteers in laboratory condition

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Asian Pacific Journal of Tropical Medicine 2020年第1期13卷 17-23页

作者： Arshad Veysi Ahmad reza Mahmoudi mohammad reza yaghoobi-ershadi Mahmood Jeddi-Tehrani Yavar Rassi Alireza Zahraei-Ramazani Nasibeh Hosseini-Vasoukolaei Daem Roshani Mahboubeh Fatemi Ali Khamesipour Amir Ahmad Akhavan Zoonoses Research Center Research Institute for Health DevelopmentKurdistan University of Medical sciencesSanandajIran Department of Medical Entomology and Vector Control School of Public HealthTehran University of Medical SciencesTehranIran Immunology Research Center Institute of Immunology and Infectious DiseasesIran University of Medical SciencesTehranIran Monoclonal Antibody Research Center Avicenna Research InstituteACECRTehranIran Department of Medical Entomology and Vector Control Health Sciences Research CenterAddiction InstituteMazandaran University of Medical SciencesSariIran Social Determinants of Health Research Center Research Institute for Health DevelopmentKurdistan University of Medical SciencesSanandajIran Center for Research and Training in Skin Diseases and Leprosy Tehran University of Medical SciencesTehranIran

Objective:To investigate Phlebotomus(P.)sergenti Parrot,1917(Diptera:Psychodidae)salivary gland antigens and their immune response in ***:Human volunteers were exposed to sand flies’bites in the laboratory,and following each exposure the size of induration was *** mean protein concentration of salivary gland lysate and specific *** saliva IgG was *** fly salivary proteins were separated by SDS-PAGE and their immunoreactivity was examined by Western blotting ***:Individuals exposed to *** salivary gland lysate for 8 months showed both antibody and delayed type hypersensitivity responses,although exposure for one month did not provoke any immune *** trend of antibody fluctuated during the exposure time and dropped by the end of antigen *** mean protein content was(0.36±0.08)μg in each pair salivary *** gland lysate showed 11 to 12 major protein bands and 3 to 6 of them were ***:Our study showed that the salivary gland components of *** provoked both cellular and humoral immune responses in ***,there are some immunogenic proteins in *** saliva which could be subjected for further investigation as vector-based vaccine candidate/s against anthroponotic cutaneous leishmaniasis.

关键词： Phlebotomus sergenti Antibody response Delayed-type hypersensitivity Human Salivary gland antigen

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

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

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

Multidisciplinary design optimization of a dual-spin guided vehicle

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Defence Technology（防务技术） 2024年第7期37卷 133-148页

作者： Jalal Karimi mohammad reza Rajabi Seyed Hossein Sadati Seyed Mahid Hosseini Department of Aerospace Engineering Malek Ashtar University of TechnologyTehranIran

In this research,a Multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design *** this way,a parametric formulation is *** related disciplines,including structure,aerodynamics,guidance,and control are *** total mass,maximum aerodynamic control effectiveness,minimum miss distance,maximum yield stress in all subsystems,controllability and gyroscopic stability constraints are some of objectives/constraints taken into *** problem is formulated in All-At-Ones Multidisciplinary Design Optimization approach structure and solved by Simulated Annealing and minimax *** optimal configurations are evaluated in various *** resulted optimal configurations have met all design objectives and constraints.

关键词： Flying projectile optimal design All-at-ones multidisciplinary optimization Structure discipline Guidance and control discipline Aerodynamic discipline

Improvement of Surface Mechanical and Tribological Characteristics of L-PBF Processed Commercially Pure Titanium through Ultrasonic Impact Treatment

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 1034-1046页

作者： Iman Ansarian reza Taghiabadi Saeid Amini mohammad Hossein Mosallanejad Luca Iuliano Abdollah Saboori Department of Materials Science and Metallurgy Imam Khomeini International University(IKIU)QazvinIran Department of Mechanical Engineering University of KashanKashanIran Integrated Additive Manufacturing Center Department of Management and Production EngineeringPolitecnico di TorinoCorso Duca Degli Abruzzi 2410129TurinItaly

Multi-pass ultrasonic impact treatment(UIT)was applied to modify the microstructure and improve the mechanical and tribological characteristics at the near-surface region of commercially pure Ti(CP-Ti)specimens produced by the laser powder bed fusion(L-PBF)*** considerably refined the L-PBF process-related acicular martensites(α′-M)and produced a well-homogenized and dense surface microstructure,where the porosity content of 1-,3-,and 5-pass UITed samples was reduced by 43,60,and 67%,*** UITed samples showed an enhancement in their near-surface mechanical properties up to a depth of about 300μ*** nanoindentation results for the 3-pass UITed sample revealed an increase of about 53,45,and 220%in its nanohardness,H/E_(r),and H_(3)/E_(r)^(2)indices,*** stylus profilometry results showed that performing the UIT removed the L-PBF-related features/defects and offered a smooth *** roughness average(R_(a))and the skewness(R_(sk))of the 3-pass UITed sample were found to be lower than those of the L-PBFed sample by 95 and 223%,*** the UIT also enhanced the material ratio,where the maximum load-bearing capacity(~100%)in as-L-PBFed(as-built)and 3-pass UITed samples was obtained at 60-and 10-µm depths,*** tribological investigations showed that applying the UIT resulted in a significant reduction of wear rate and average coefficient of friction(COF)of *** instance,under the normal pressures of 0.05 and 0.2 MPa,the wear rate and COF of the 3-pass UITed sample were lower than those of the L-PBFed sample by 65 and 58%,and 20 and 17%,respectively.

关键词： Laser powder bed fusion Ultrasonic impact treatment Commercially pure Ti(CP-Ti) Surface mechanical properties Tribological properties

Fatal cases in pediatric patients after post-exposure prophylaxis for rabies:A report of two cases

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Asian Pacific Journal of Tropical Medicine 2024年第1期17卷 39-42页

作者： Hekmatollah Khoubfekr mohammad Jokar Vahid Rahmanian Hasan Blouch mohammad reza Shirzadi Rouzbeh Bashar Department of Public Health Iranshahr University of Medical SciencesIranshahrIran Faculty of Veterinary Medicine Karaj BranchIslamic Azad UniversityKarajIran Department of Public Health Torbat Jam Faculty of Medical SciencesTorbat JamIran Center for Communicable Diseases Control Ministry of Health and Medical EducationTehranIran WHO Collaborating Center for Reference and Research on Rabies Virology DepartmentPasteur Institute of IranTehranIran

Rationale:Rabies is a zoonotic disease with a high mortality,primarily transmitted through the bite of infected mammals,particularly dogs and *** being a well-known disease since ancient times,it continues to cause a significant number of human deaths worldwide,with approximately 65000 fatalities reported *** concerns:We present two fatal cases of rabies in a 12-year-old immigrant boy and a 7-year-old *** first case was subject to a 24-hour delay in receiving appropriate medical attention and rabies preventive measures due to the lack of awareness among emergency hospital staff,leading to the administration of wound dressing *** second case received timely rabies immunoglobulin administration;however,there was a 4-day delay in administering the fourth dose of the rabies vaccine,despite presenting evident symptoms of ***:Postmortem examination of brain samples from both patients confirmed the presence of rabies ***:Post-exposure prophylaxis for ***:Both patients were admitted to the hospital after the manifestation of rabies-related symptoms,with the 12-year-old child seeking medical care 47 days after the animal bite and the 7-year-old child seeking medical care 58 days after the ***,the first patient died after 27 days and the second patient died after 40 days of ***:There is an urgent need for heightened awareness and education among both healthcare professionals and the public regarding the urgency of seeking immediate medical attention after potential rabies *** recognition and initiation of post-exposure prophylaxis are pivotal in preventing the progression of the *** surveillance and reporting systems,coupled with continuous training for healthcare professionals,can contribute to early detection and management of rabies cases.

关键词： Rabies Encephalitis Pediatric patients Rabies prophylaxis Public health awareness