FIXED POINT THEOREMS FOR (α,p)-NONEXPANSIVE MAPPINGS IN CAT(0) SPACES

Mehdi Asadi,Shahrokh Ghasemzadehdibagi,Somayeh Haghayeghi,Naeem Ahmad 경남대학교 수학교육과 2021 Nonlinear Functional Analysis and Applications Vol.26 No.5

We present some fixed point theorems for ((α_1, α_2, · · · , α_n), p)-nonexpansive mappings in CAT(0) spaces. Moreover the properties of the fixed points set are studied. Many of them have been derived from new condition on these mappings, which makes the nonexpansivemapping T_α :=α_1 T ⊕ α_2 T^2 ⊕ ·· ·⊕ α_n T^n.

SIMULATION FUNCTIONS OVER M-METRIC SPACES

Asadi, Mehdi,Azhini, Mahdi,Karapinar, Erdal,Monfared, Hossein The Youngnam Mathematical Society 2017 East Asian mathematical journal Vol.33 No.5

In this paper, existence of fixed point of certain operators imbedded in simulation function has been investigated in context of a complete M-metric spaces.

SIMULATION FUNCTIONS OVER M-METRIC SPACES

Mehdi Asadi,Mahdi Azhini,Erdal Karapınar,Hossein Monfared 영남수학회 2017 East Asian mathematical journal Vol.33 No.5

In this paper, existence of fixed point of certain operators imbedded in simulation function has been investigated in context of a complete M-metric spaces.

The different aspects of attractive toxic baits containing fipronil for control of the German cockroach (Blattella germanica)

Mehdi Khoobdel,Hossein Dehghan,Mohammad Ali Oshaghi,Esmail Amiri Ghannat Saman,Abouzar Asadi,Mustapha Ahmed Yusuf 환경독성보건학회 2022 환경독성보건학회지 Vol.37 No.4

The use of Attractive Toxic Baits (ATBs) is considered to be a low-risk practical method for controlling cockroaches. This study evaluates the attractiveness of a lab-made, fipronil-containing bait, and its effect on the food consumption and mortality of the German cockroach Blattella germanica, under field and laboratory conditions. Different developmental stages of the cockroach were used to determine their preferred carbohydrate/protein rich foods and examine the effectiveness of lab-made baits. The analysis of variance (ANOVA) with Tukey’s Test was determined using SAS 9.1 and GraphPad Prism software programs. The significance level was considered at p<0.05. The most-consumed foods were carbohydrate-rich foods (biscuit and banana powder) and food consumption rate was highest in non-gravid females. The most attractive bait ingredients were 20% roasted peanut butter, 50% biscuit and 30% banana powder. The highest lethality was recorded from the baits containing 0.02% fipronil under laboratory conditions, while infested houses baited with the lab-made bait showed 76.5% and 100% decline, respectively, in cockroach numbers in the first- and fourth-week post-baiting. In conclusion, palatable foods with a pleasant odour, like biscuit powder, banana powder and peanut butter were the most effective ingredients for the ATBs. The ATBs impregnated with 0.02% fipronil provide a promising approach for control of the German cockroach. However, there is a need to evaluate the potentials of the lab-made baits, under laboratory and field conditions, in the control of other health-important cockroaches.

Pd Nanoparticles Immobilized on Boehmite as an Efficient Heterogeneous Catalyst for Lubricant Hydrogenation

Asadi Zahra,Sadjadi Samahe,Bahri-Laleh Naeimeh,Nekoomanesh-Haghighi Mehdi 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.3

To furnish high-quality poly-alpha-olefi n oils, hydro-fi nishing under mild reaction conditions by a novel heterogeneous catalyst was accomplished. In this regard, Pd nanoparticles were immobilized on Boehmite. Then, the eff ect of hydrogenation variables, i.e., catalytic loading, reaction pressure, and temperature on the catalytic effi ciency, was investigated with response surface method. According to the results, a hydrogenation effi ciency of 85% was obtained at the optimum reaction conditions of T = 130 °C, P = 8 bar, and catalyst dosage = 5 wt%. Notably, the catalyst was recyclable for four runs with insignifi cant leaching of palladium nanoparticles. The comparison results suggested Pd/Boehmite catalyst as an appropriate alternative to the commercial Pd/Alumina and Pd/Silica. Hot fi ltration test also approved heterogeneous nature of catalysis.

Trends in gastrointestinal cancer incidence in Iran, 2001-2010:

Mehdi Darabi,Mohsen Asadi Lari,Seyed Abbas Motevalian,Ali Motlagh,Shahram Arsang-Jang,Maryam Karimi Jaberi 한국역학회 2016 Epidemiology and Health Vol.38 No.-

OBJECTIVES: The main purpose of this study was to evaluate changes in the time trends of stomach, colorectal, and esophageal cancer during the past decade in Iran. METHODS: Cancer incidence data for the years 2001 to 2010 were obtained from the cancer registration of the Ministry of Health. All incidence rates were directly age-standardized to the world standard population. In order to identified significant changes in time trends, we performed a joinpoint analysis. The annual percent change (APC) for each segment of the trends was then calculated. RESULTS: The incidence of stomach cancer increased from 4.18 and 2.41 per 100,000 population in men and women, respectively, in 2001 to 17.06 (APC, 16.7%) and 8.85 (APC, 16.2%) per 100,000 population in 2010 for men and women, respectively. The corresponding values for colorectal cancer were 2.12 and 2.00 per 100,000 population for men and women, respectively, in 2001 and 11.28 (APC, 20.0%) and 10.33 (APC, 20.0%) per 100,000 in 2010. For esophageal cancer, the corresponding increase was from 3.25 and 2.10 per 100,000 population in 2001 to 5.57 (APC, 12.0%) and 5.62 (APC, 11.2%) per 100,000 population among men and women, respectively. The incidence increased most rapidly for stomach cancer in men and women aged 80 years and older (APC, 23.7% for men; APC, 18.6% for women), for colorectal cancer in men aged 60 to 69 years (APC, 24.2%) and in women aged 50 to 59 years (APC, 25.1%), and for esophageal cancer in men and women aged 80 years and older (APC, 17.5% for men; APC,15.3% for women) over the period of the study. CONCLUSIONS: The incidence of gastrointestinal cancer significantly increased during the past decade. Therefore, monitoring the trends of cancer incidence can assist efforts for cancer prevention and control.

Risk factors of fatal occupational accidents in Iran

Hadi Asady,Mehdi Yaseri,Mostafa Hosseini,Morvarid Zarif-Yeganeh,Mahmoud Yousefifard,Mahin Haghshenas,Parisa Hajizadeh-Moghadam 대한직업환경의학회 2018 대한직업환경의학회지 Vol.30 No.-

Background: Occupational accidents are of most important consequences of globalization in developing countries. Therefore, investigating the causes of occupational accidents for improving the job situation and making operational policy is necessary. So the aim of this study was to investigate factors affecting the fatal occupational accidents and also calculate the years of life lost for dead workers. Methods: This cross-sectional study was conducted on data related to the 6052 injured workers that was registered in the 2013 registry system of the Ministry of Health and Medical Education of Iran. Variables including sex, education, age, job tenure, injury cause, referred location of injured workers, occupation, shift work, season, accident day, damaged part of the body were chosen as independent variables. The Chi-squared and Fisher exact tests were used for univariate analysis and then exact multiple logistic regression was carried out to identify independent risk factors of fatal occupational accidents. Finally, for dead workers, years of life lost, according to the injury causes was calculated. Results: Among the 6052 accidents reported, 33 deaths were recorded. Chi-square and Fisher exact tests showed that factors including: current job tenure (p = 0.01), damaged parts of the body (p 〈 0.001) and injury cause (p 〈 0.001) are associated with the fatal accidents. Also exact multiple logistic regression analysis showed a significant association between electric shocks as a cause of injury (OR = 7.04; 95% CI: 1.01-43.74; p = 0.02) and current job tenure more than 1 year (OR = 0.21; 95% CI: 0.05-0.70; p = 0.005) with the fatal accidents. The total amount of years of life lost based on causes of injuries was estimated 1289.12 years. Conclusions: In Iran, fatal accident odds in workers with job tenure more than 1 year was less in comparing to the workers with job tenure less and equal to 1 year. Also odd of death for electrical shock was more than other causes of injuries. So it seems that employing of workers who have more than one-year work experience in a specific job and using of appropriate safeguards will be useful for the reducing of fatal occupational accidents.

Response Modification Factor due to Ductility of Screen-Grid ICF Wall System in High Seismic Risk Zones

Pouria Asadi,Rahmat Madandoust,Seyed Mehdi Zahrai 대한토목학회 2017 KSCE JOURNAL OF CIVIL ENGINEERING Vol.21 No.1

Insulating Concrete Form (ICF) includes permanent formworks, most commonly expanded polystyrene foam. Insulating Concrete Forms create a formwork for concrete that stays in place as permanent building insulation. Structures usually experience plastic deformations during major earthquakes; however, because of complexity of performing non-linear analysis, codes consider effects of inelastic behavior through reduction factors (R) and allow linear analysis instead. Reduction factor has not been presented for Screen- Grid ICF (SGICF) wall system until now. In this research, reduction factors due to ductility of SGICF wall systems are determined by non-linear static analysis (Pushover) and Concrete Damaged Plasticity constitutive model (CDP) in ABAQUS 6.12. Then the results are compared to those of the experimental model. Results from this research show that such structural system, if used in high seismic risk zones, has an acceptable ductility.

A comprehensive study (kinetic, thermodynamic and equilibrium) of arsenic (V) adsorption using KMnO4 modified clinoptilolite

Mohamadreza Massoudinejad,Anvar Asadi,Mehdi Vosoughi Niri,Morteza Gholami,Babak Kakavandi,Mohammad Amin Karami 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.10

The sorption of As(V) on manganese oxide coated zeolite (MOCZ) was investigated through batch study to explore the feasibility of removing arsenic from groundwater. MOCZ was characterized by scanning electron microscopy, XRD, FTIR spectroscopy, and point of zero charge (pHPZC) measurements. The effects of process parameters such as contact time, adsorbent size, temperature and pH were investigated. Arsenic detection was carried out by atomic fluorescence spectrometer. Arsenate adsorption onto MOCZ followed the pseudo-second-order kinetic model with a correlation coefficient more than 0.99. Optimum removal of arsenate occurred within pH range of 6-10. The equilibrium data were analyzed by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The maximum adsorption capacity calculated from the Langmuir and D-R models was 151 and 152.8 μg g−1, respectively, at 38 oC. The activation energy of adsorption (Ea) was found to be 3.68 kj mol−1, suggesting that the adsorption process may be physical sorption. Thermodynamic parameters: ΔHo, was 1.181 kj mol−1; ΔSo, was −0.29 kj mol−1, while the values of ΔGo were −83.9, −86.7 and 89.8 kj mol−1 at 18, 28 and 38, respectively, suggesting endothermic and spontaneous process and a rise in temperature favoring the adsorption.

Synthesis and radiolabeling of PEGylated dendrimer-G₂-Gemifloxacin with ^99mTc to Biodistribution study in rabbit

Mohtavinejad, Naser,Dolatshahi, Shaya,Amanlou, Massoud,Ardestani, Mehdi Shafiee,Asadi, Mehdi,Pormohammad, Ali Techno-Press 2021 Advances in nano research Vol.10 No.5

Infection is one of the major mortality causes throughout the globe. Nuclear medicine plays an important role in diagnosis of deep infections such as osteomyelitis, arthritis infection, heart valve and heart prosthesis infections. Techniques such as labeled leukocytes are sensitive and selective for tracking the inflammations but they are not suitable for differentiating infection from inflammation. Anionic linear-globular dendrimer-G₂ was synthesized then conjugation to gemifloxacin antibiotic. The structures were identified by FT-IR, ¹H-NMR, C-NMR, LC-MS and DLS. The toxicity of gemifloxacin and dendrimer-gemifloxacin complex was compared by MTT test. Dendrimer-G₂-gemifloxacin was labeled by Technetium-99m and its in-vitro stability and radiochemical purity were investigated. In-vivo biodistribution and SPECT imaging were studied in a rabbit model. Identify and verify the structure of the each object was confirmed by FT-IR, ¹H-NMR, C-NMR and LC-MS, also, the size and charge of this compound were 128 nm and -3/68 mv respectively. MTT test showed less toxicity of the dendrimer-G₂-gemifloxacin than free gemifluxacin (P < 0.001). Radiochemical yield was > %98. Human serum stability was 84% up to 24 h. Biodistribution study at 50 min, 24 and 48 h showed that the complex is significantly absorbed by the intestine and accumulation in the lungs and affects them, finally excreted through the kidneys, biodistribution results are consistent with results from full image means of SPECT/CT technique.