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Analysis of Partial Volume Effects on Accurate Measurement of the Hippocampus Volume

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Journal of Electronic Science and Technology 2014年第2期12卷 182-186页

作者： Maryam Hajiesmaeili jamshid Dehmeshki Tim Ellis Quantitative Medical Imaging International Institute and Digital Imaging Research Centre Faculty of ScienceEngineering and ComputingKingston University LondonKingston upon ThamesKT1 2EEUnited Kingdom

Hippocampal volume loss is an important biomarker in distinguishing subjects with Alzheimer＇s disease （AD） and its measurement in magnetic resonance images （MRI） is influenced by partial volume effects （PVE）. This paper describes a post-processing approach to quantify PVE for correction of the hippocampal volume by using a spatial fuzzyC-means （SFCM） method. The algorithm is evaluated on a dataset of 20 T1-weighted MRI scans sampled at two different resolutions. The corrected volumes for left and right hippocampus （HC） which are 23% and 18% for the low resolution and 6% and 5% for the high resolution datasets, respectively are lower than hippocampal volume results from manual segmentation. Results show the importance of applying this technique in AD detection with low resolution datasets.

关键词： Hippocampus magnetic resonance images partial volume effects spatial fuzzy C-means

Polypyrrole Coated PET Fabrics for Thermal Applications

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Materials Sciences and Applications 2010年第4期1卷 253-259页

作者： Amelia Carolina Sparavigna Luca Florio jamshid Avloni Arthur Henn 不详

Polypyrrole can be chemically synthesized on PET fabrics, giving rise to textiles with high electric conductivity. These textiles are suitable for several applications from antistatic films to electromagnetic interference shielding devices. Here we discuss the thermal-electric performance and the heat generation of polypyrrole coated PET fabric samples, previously studied because of their electric conductivity and electromagnetic interference shielding effectiveness. The measured Seebeck effect is comparable with that of metallic thermocouples. Since polypyrrole shows extremely low thermal diffusivities regardless of the electrical conductivity, the low thermal conductivity gives significant advantage to the thermoelectric figure-of-merit ZT, comparable with that of some traditional inorganic thermoelectric materials. The heat generation is also investigated for possible heating textile devices. The results confirm polypyrrole as a prom- ising material for thermal electric applications due to its easy preparation in low cost processing.

关键词： Conductive Polymers Polypyrrole Thermoelectric Materials

冲击波感度与撞击感度预测的研究进展(英文)

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含能材料 2008年第1期16卷 113-120页

作者： Mohammad Hossein Keshavarz Arash Shokrolahi Karim Esmailpoor Abbas Zali Hamid Reza Hafizi jamshid Azarniamehraban Department of Chemistry Malek-ashtar University of TechnologyShahin-shahr P.O.Box 83145/115Islamic Republic of Iran

Empirical,quantum mechanical and artificial neural network methods are three usual methods in recent years that were used to predict sensitivity of different classes of high *** recent developments in predicting sensi... 详细信息

关键词：工程材料撞击灵敏性爆炸力学经验主义量子力学人工神经网络

Seroprevalence of SARS-CoV-2 in Mazandaran province, Iran

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Asian Pacific Journal of Tropical Medicine 2021年第1期14卷 10-16页

作者： Seyed Abbas Mousavi Hamed Rouhanizadeh Majid Saeedi Mahmood Moosazadeh Abolqasem Ajami AfsanehFendereski jamshid Yazdani-Charati Seyed Mohsen Soleimani Nader Ahangar Seyed Hossein Seyedpour Zahra Bandalizaeh Psychiatry and Behavioral Sciences Research Center Institute of AddictionDepartment of PsychiatryMazandaran University of Medical SciencesSariIran Department of Pediatrics School of MedicineMazandaran University of Medical SciencesSariIran Department of Pharmaceutics Faculty of PharmacyMazandaran University of Medical SciencesSariIran Health Sciences Research Center Institute of AddictionMazandaran University of Medical SciencesSariIran Deptartment of Immunology Faculty of MedicineMazandaran University of Medical SciencesSariIran Department of Biostatistics Mazandaran University of Medical SciencesSariIran Department of Biostatistics Health Sciences Research CenterInstitute of AddictionMazandaran University of Medical SciencesSariIran General Physician Deputy of HealthMazandaran University of Medical SciencesSariIran Deputy of Health Mazandaran University of Medical SciencesSariIran

Objective:To determine the seroprevalance of severe acute respiratory syndrome coronavirus 2(SARS-Co V-2)antibodies in the general population of Mazandaran province in Iran and to estimate the percentage of asymptomatic,mild,and severe ***:We chose 1588 inhabitants of Mazandaran province with cluster *** measured their SARS-Co V-2 immunoglobulin M(Ig M)and immunoglobulin G(Ig G)serum ***,risk factors,and symptoms were *** seroprevalence of SARS-Co V-2 was calculated by age and city and the World Health Organization(WHO)protocol and further stratified by demographic variables and risk ***,we identified the symptoms and factors related to COVID-19 with logistic ***:Two hundred subjects(12.59%)were tested positive for either Ig G or Ig *** May 23,2020,the prevalence of COVID-19 was 15.26%(95%CI:12.97%-17.79%)based on direct standardization and WHO’s standardized age *** on multivariate logistic regression,the incidence of getting an infection increased by an average of 11.6%for every 10-year increase in age(OR=1.116,95%CI:1.008-1.236,P=0.035).Furthermore,those in contact with COVID-19 patients had a 66.1%higher risk of developing the disease(OR=1.661,95%CI:1.104-2.497,P=0.015).In addition,the chance of getting SARS-Co V-2 infection was almost four times higher in people who had consulted a doctor during the pandemic than those who had not(OR=3.942,95%CI:2.813-5.524,P<0.001).Conclusions:The prevalence of COVID-19 in Mazandaran province could be higher than the officially reported statistics based on diagnostic tests and clinical *** seems to be more asymptomatic or mild symptom cases than what was previously reported.

关键词： SARS-CoV-2 COVID-19 Prevalance Iran Serology IgM IgG

Mycosis Fungoides: Epidemiology in Isfahan, Iran

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Journal of Cosmetics, Dermatological Sciences and Applications 2012年第3期2卷 229-233页

作者： Farahnaz Fatemi Naeini jamshid Najafian Mansoor Salehi Zahra Azimi Parvin Rajabi Department of Genetics and Molecular Biology Medical School Isfahan University of Medical Sciences Isfahan Iran Isfahan Cardiovascular Research Center Isfahan Cardiovascular Research Institue Isfahan University of Medical Sciences Isfahan Iran Isfahan University of Medical Sciences Isfahan Iran Skin and Stem Cell Research Center Tehran University of Medical Sciences Tehran Iran Skin Diseases and Leishmaniasis Research Center Isfahan University of Medical Sciences Isfahan Iran

Background: Mycosis Fungoides (MF) is the most common and indolent form of Cutaneuse T-cell Lymphomas (CTCL), that usually occurs in old adults. Objectives: To determine epidemiologic features and patients characteristics of MF in Isfahan (Iran). Methods: We performed a retrospective study in MF clinic of alzahra hospital that is the main center for treatment of MF patients in Isfahan (Iran) and evaluated clinicopathologic features. Results: In 3 years 25 patients were referred to Alzahra MF clinic. 18 patients diagnosed as MF. Seven (38.9%) patients were male and 11 (61.1%) were female with male to female ratio of 1:1.57. The mean age of patients was 41.06 years. 88.9% of our patients were in stages ΙA and ΙB. Conclusion: Most of our patients presented in early stages that were similar to other studies, while male: female ratio is different from other studies.

关键词： Mycosis Fungoides Epidemiology Clinical Features Iran

Cholangiocarcinoma in a broiler chickens

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Cholangiocarcinoma in a broiler chickens

Mathematical Modeling of the Transfer of Energy Forces from the Engine through Hydro Transmission and Hydro Differential to Executive Bodies

The 15th World Veterinary Poultry Congress

作者： jamshid Razmyar Omid Dezfoulian Mostafa Peighambari Mehdi Razazian Department of Clinical Sciences Faculty of Veterinary MedicineUniversity of TehranTehranIran. Department of Pathology School of Veterinary MedicineLorestan UniversityKhorramabadIran Department of Clinical Sciences Faculty of Veterinary MedicineUniversity ofTehranTehranIran. Private Poultry Clinic Forsat AveTehranIran

Twenty carcasses from a small flock of 5,000 four-weeks-old broiler chickens were submitted to a poultry disease diagnostic clinic in *** necropsy,19 carcasses showed the typical lesions of colibacillosis such

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World Journal of Mechanics 2019年第5期9卷 105-112页

作者： Farkhod Matmurodov Bozorboy Sobirov Isomiddin Tulanov Jakhongir Mirzaabdullayev jamshid Khakimov Oybek Daminov Turinsky the Polytechnical University in Tashkent Tashkent Uzbekistan Urgench Branch of the Tashkent University of Information Technologies Tashkent Uzbekistan Research Institute of Mechanization of Agriculture Settlement of Gulbakhor Uzbekistan Tashkent State Technical University Tashkent Uzbekistan

Mathematically simulated energy transfers from the energy source to the chassis through hydro transmissions and hydro differential. The developed unified mathematical model of a dynamic system allows, at the design stage, of many branched drive mechanisms, including transmission hydraulic and hydraulic differential actuators, to explore dynamic processes and select rational parameters.

关键词： Energy Forces Dynamic System Many-Branched Mechanism Engine Hydro Transmission Hydro Differential

Spatial Analysis Approach in Revealing the Global Sinks of Atmosphere Carbon Dioxide through “Leave One Out” Method

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Journal of Geographic Information System 2014年第4期6卷 286-297页

作者： Ali Madad Mossayeb jamshid Ali Reza Gharagozlou Ali Reza Vafaei Nejad Ali Javidane Hamid Reza Ranjbar Department of Environment and Energy Science and Research Branch Islamic Azad University Tehran Iran Department of GIS/RS Science and Research Branch Islamic Azad University Tehran Iran Department of Science/Florida Southern College Lakeland Florida USA Faculty of Civil and Passive Defense Malek Ashtar University of Technology Tehran Iran Surveying and Geomatics Group Engineering Faculty Tehran University Tehran Iran Surveying Department National Cartographic Center Tehran Iran

Global warming and climate change are the most important ecological issues of our time. The most well-known factor in this phenomenon is the redundancy of carbon dioxide in the atmosphere. Over the past 50 years the amount of residual CO2 in the atmosphere has risen from 40% to 45%. Reducing CO2 redundancy requires precise knowledge of the gas sources and sinks throughout the atmosphere. Despite having a leading role in residual gas levels of atmosphere, the diagnosis and types of changes of absorbing carbon dioxide are very much in doubt. Atmospheric measurements of CO2 concentrations are highly precise and provide a reliable measure of increase of CO2 in the atmosphere every year but they do not lead to the location of sources and sinks. Studies about understanding CO2 cycles began mainly around 1990 and most of these studies have been focused on non-spatial analysis. By ignoring the spatial effects, an important property such as closeness (adjacent) has been disregarded. The emission sources of gas are stronger than their sink sources i.e., whenever a sink is adjacent to a strong emission source, the measurements will show a massive existence of CO2 gas in that region although there exists a fine CO2?gas sink at below. Using the global measurements of CO2 and applying spatial analysis approach to “Leave One Out” method, our studies reveal the most probable spots of CO2 sources and sinks and that Negev Desert in Middle East is a distinguished CO2 sink region.

关键词： Carbon Dioxide Sink Spatial Autocorrelation Interpolation Jackknife Negev Desert

Baldness in a canary （serinus canaria） associated with Pseudomonas osteomyelitis

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Baldness in a canary （serinus canaria） associated with Pse...