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Determination of heavy metals concentration in drinking water resources of Aleshtar in 2009

mehdi karbasi, elham karbasi, ali saremi, hosein Ghorbani zade Kharazi
2010 Yafteh  
With industrial and economic growth and production of different compounds and chemical materials which human being has gained using natural resources for his ease and comfort , in turn , he introduces matters such as heavy metals and toxic agents into the nature , an unwanted process which leads to serious problems and dangers either for environment or for himself. This study aims at determination of heavy metals concentration (As,Pb,Cd,Cr,Hg and Zn) in water resources and wells of Aleshtar
more » ... ng 4 seasons in the year 2009. Materials and Methods :This cross- sectional study was carried out to determine concentration of heavy metals including As, Pb,Cd, Cr, Hg, Zn in Aleshtar drinking water resources. twenty samples from five drinking water wells were systematiclly collected and carried to water lab. By use of express standard methods,samples were 10 times concentrated, then metals concentralion determined by AAP(WFX130) and data analyzed by SPSS and EXCELL soft wares. Results: The results showed that concentration average of Hg ,Zn and Cd was zero during the sampling and concentration average of As,Pb and Cr in drinking water wells were 0.0033, 0.0788 and 0.01 mg/l respectively. Conclusion: Findings indicated that concentration average of heavy metals in all studied drinking water wells were lower than standard limit and no significant difference was observed during 4 stages of sampling , consequently ,drinking water of the mentioned wells are not polluted to the heavy metals.
doaj:5f50a279905b4057b1c17caaa7077e4b fatcat:6piykyzcfrbbnoa6ik6phv3hei

The Protective Effect of Sertraline in Preventing Cisplatininduced Ototoxicity in Solid Organ Chemotherapy

Mojtaba Maleki Delarestaghi, Saleh Mohebbi, Ali Basi, Nariman Rahbar, Zahra Karbasi, Hassan Karbasi
2018 International Tinnitus Journal  
Cisplatin, as a platinum-based chemotherapeutic medication, is applied for various types of solid tumors. Regarding the treatment of cancer cells, cisplatin is potentially accompanied with some side effects such as nephrotoxicity, neurotoxicity, and ototoxicity in spite of high efficacy of Cisplatin. The present study aimed to determine whether the use of oral sertraline can contribute to preserve hearing threshold among the patients who receive cisplatin or not. This research has done for one
more » ... ear, along with a 3 months course and follow-up. This is a double-blind, randomized, and placebo-controlled trial study. The study was conducted in Oncology Clinic and Audiology Department of Firoozgar University Hospital in Tehran, Iran. Among 112 patients, 79 patients who were suffering from different types of solid tumors and were candidates for receiving cisplatin for chemotherapy treatment were selected. The grade of hearing impairment and otoacoustic emission in the first day and the last stage of the study was used for data analysis. Among 112 patients, 79 patients were randomly selected to receive either sertraline (50 mg/d) as the case group, or placebo as the control group. Before and after the treatments, the patients were assessed by High-Frequency Audiometry and dpOAE tests. First, the two groups were distributed homogeneously based on sex and age. Based on Common Terminology Criteria for Adverse Events (CTCAE), the Ototoxicity Grade indicated a significantly lower grade of deficits in the Sertraline group (p<0.001), compared to that of the control group. In addition, a significant difference was observed between the two groups regarding the changes in the threshold of dpOAE (p=0.000). The daily consumption of sertraline (50 mg/d) among the adults who were candidates for chemotherapy treatment with cisplatin could result in preserving the hearing threshold significantly.
doi:10.5935/0946-5448.20180029 fatcat:s2v3fokfmje6tny7ohlezcuyhu

An Estimation Theoretic Approach for Sparsity Pattern Recovery in the Noisy Setting [article]

Ali Hormati, Amin Karbasi, Soheil Mohajer, Martin Vetterli
2009 arXiv   pre-print
Compressed sensing deals with the reconstruction of sparse signals using a small number of linear measurements. One of the main challenges in compressed sensing is to find the support of a sparse signal. In the literature, several bounds on the scaling law of the number of measurements for successful support recovery have been derived where the main focus is on random Gaussian measurement matrices. In this paper, we investigate the noisy support recovery problem from an estimation theoretic
more » ... t of view, where no specific assumption is made on the underlying measurement matrix. The linear measurements are perturbed by additive white Gaussian noise. We define the output of a support estimator to be a set of position values in increasing order. We set the error between the true and estimated supports as the ℓ_2-norm of their difference. On the one hand, this choice allows us to use the machinery behind the ℓ_2-norm error metric and on the other hand, converts the support recovery into a more intuitive and geometrical problem. First, by using the Hammersley-Chapman-Robbins (HCR) bound, we derive a fundamental lower bound on the performance of any unbiased estimator of the support set. This lower bound provides us with necessary conditions on the number of measurements for reliable ℓ_2-norm support recovery, which we specifically evaluate for uniform Gaussian measurement matrices. Then, we analyze the maximum likelihood estimator and derive conditions under which the HCR bound is achievable. This leads us to the number of measurements for the optimum decoder which is sufficient for reliable ℓ_2-norm support recovery. Using this framework, we specifically evaluate sufficient conditions for uniform Gaussian measurement matrices.
arXiv:0911.4880v1 fatcat:ucw2hgxgijbrbplmm4qlb7dj3a

The effect of sales promotions characteristics on brand equity

Bahram Jabarzadeh Karbasi, Ali Jafari Rad
2014 Management Science Letters  
In the recent years, retail industry in Iran has faced an increasing competition and this has encouraged the managers of chain stores to find ways to differentiate their own companies. One of the influential factors in this field is brand equity. Concerning this issue, the aim of this paper is to examine the effectiveness of sale promotions on the brand equity of ETKA chain stores. Therefore, a sample of 500 people among the customers of these stores in Tehran was examined. The achieved
more » ... ion obtained from the questionnaire was analyzed through structural equation modeling. The results showed that monetary and non-monetary promotions could influence on brand association, brand awareness and the perceived quality. On the other hand, it came out that brand association and the perceived quality are influential on brand loyalty. At last, a few suggestions were presented based on the results of this research.
doi:10.5267/j.msl.2014.8.008 fatcat:tuqxlpke4beyrgykh65bi7bsou

Herbal Remedies as Potential in Cartilage Tissue Engineering: An Overview of New Therapeutic Approaches and Strategies

Constanze Buhrmann, Ali Honarvar, Mohsen Setayeshmehr, Saeed Karbasi, Mehdi Shakibaei, Ali Valiani
2020 Molecules  
It is estimated that by 2023, approximately 20% of the population of Western Europe and North America will suffer from a degenerative joint disease commonly known as osteoarthritis (OA). During the development of OA, pro-inflammatory cytokines are one of the major causes that drive the production of inflammatory mediators and thus of matrix-degrading enzymes. OA is a challenging disease for doctors due to the limitation of the joint cartilage's capacity to repair itself. Though new treatment
more » ... roaches, in particular with mesenchymal stem cells (MSCs) that integrate the tissue engineering (TE) of cartilage tissue, are promising, they are not only expensive but more often do not lead to the regeneration of joint cartilage. Therefore, there is an increasing need for novel, safe, and more effective alternatives to promote cartilage joint regeneration and TE. Indeed, naturally occurring phytochemical compounds (herbal remedies) have a great anti-inflammatory, anti-oxidant, and anabolic potential, and they have received much attention for the development of new therapeutic strategies for the treatment of inflammatory diseases, including the prevention of age-related OA and cartilage TE. This paper summarizes recent research on herbal remedies and their chondroinductive and chondroprotective effects on cartilage and progenitor cells, and it also emphasizes the possibilities that exist in this research area, especially with regard to the nutritional support of cartilage regeneration and TE, which may not benefit from non-steroidal anti-inflammatory drugs (NSAIDs).
doi:10.3390/molecules25133075 pmid:32640693 pmcid:PMC7411884 fatcat:c4fd7ujpfjdrpe4rvddf4vxgmi

Compressed Sensing with Probabilistic Measurements: A Group Testing Solution [article]

Mahdi Cheraghchi, Ali Hormati, Amin Karbasi, Martin Vetterli
2009 arXiv   pre-print
Detection of defective members of large populations has been widely studied in the statistics community under the name "group testing", a problem which dates back to World War II when it was suggested for syphilis screening. There the main interest is to identify a small number of infected people among a large population using collective samples. In viral epidemics, one way to acquire collective samples is by sending agents inside the population. While in classical group testing, it is assumed
more » ... hat the sampling procedure is fully known to the reconstruction algorithm, in this work we assume that the decoder possesses only partial knowledge about the sampling process. This assumption is justified by observing the fact that in a viral sickness, there is a chance that an agent remains healthy despite having contact with an infected person. Therefore, the reconstruction method has to cope with two different types of uncertainty; namely, identification of the infected population and the partially unknown sampling procedure. In this work, by using a natural probabilistic model for "viral infections", we design non-adaptive sampling procedures that allow successful identification of the infected population with overwhelming probability 1-o(1). We propose both probabilistic and explicit design procedures that require a "small" number of agents to single out the infected individuals. More precisely, for a contamination probability p, the number of agents required by the probabilistic and explicit designs for identification of up to k infected members is bounded by m = O(k^2 (log n)/p^2) and m = O(k^2 (log n)^2 /p^2), respectively. In both cases, a simple decoder is able to successfully identify the infected population in time O(mn).
arXiv:0909.3508v2 fatcat:r47vgog6lrch5hetqcw5slt23y

Support recovery in compressed sensing: An estimation theoretic approach

Amin Karbasi, Ali Hormati, Soheil Mohajer, Martin Vetterli
2009 2009 IEEE International Symposium on Information Theory  
Compressed sensing (CS) deals with the reconstruction of sparse signals from a small number of linear measurements. One of the main challenges in CS is to find the support of a sparse signal from a set of noisy observations. In the CS literature, several information-theoretic bounds on the scaling law of the required number of measurements for exact support recovery have been derived, where the focus is mainly on random measurement matrices. In this paper, we investigate the support recovery
more » ... blem from an estimation theory point of view, where no specific assumption is made on the underlying measurement matrix. By using the Hammersley-Chapman-Robbins (HCR) bound, we derive a fundamental lower bound on the performance of any unbiased estimator which provides necessary conditions for reliable 2norm support recovery. We then analyze the optimal decoder to provide conditions under which the HCR bound is achievable. This leads to a set of sufficient conditions for reliable 2-norm support recovery.
doi:10.1109/isit.2009.5206485 dblp:conf/isit/KarbasiHMV09 fatcat:mmf56b5qmjhi7axwrcopsd3v6y

Robotic surgery of head and neck cancers, a narrative review

Farbood Kalantari, Shahin Rajaeih, Ali Daneshvar, Zahra Karbasi, Mohammad Mahdi Salem
2020 European Journal of Translational Myology  
Head and neck cancers are the most common cancers in the body. Treatments are determined on the basis of the location and stage of the primary tumor. The goal of treatment is to eliminate the tumor, prevent recurrence or metastasis, and maintain the quality of life. There are several treatments available for the management of head and neck cancers, including surgery, radiation therapy, chemotherapy, new molecular agents, and a combination of them. Transoral robotic technique is a short-time
more » ... ation using a type of robotic machine in which the patient undergoes anesthesia for a shorter time and the side effects of this operation and the time of hospitalization are less than open surgery. Due to the importance of speed and accuracy in head and neck cancer surgery and the importance of application of robotics in surgery, the present study was designed and implemented to review the application of robotics in the management of head and neck cancers. In this review study, the keywords: application, robotic, surgical, head cancer, transoral robotic surgery (TORS), and neck cancer, were searched in ISI, PubMed, Scopus, Google scholar databases. Related articles written domestically or abroad that have covered areas such as the background of transoral robotic surgery, maintaining organ function and approaches, the advantages and disadvantages of TORS, the affordability of TORS, the combination of TORS with other therapeutic approaches published from 2003 to 2019 were reviewed. The use of robotic surgery for precise operations such as head and neck cancers seems to be essential. More advanced robotic devices are expected to expand the surgery treatment for head and neck cancers as well as the results of using TORS for oncologic optimization and acceptability of results while maintaining organ function and patient's quality of life.
doi:10.4081/ejtm.2019.8727 pmid:32782756 pmcid:PMC7385690 fatcat:t2f7ac2f5jbaxespusq3g47dkm

Epidemiological Status of Third Molars in an Iranian Population

Mahnaz Sheikhi, Mitra Karbasi Kheir, Mohammad Ali Sadeghi
2016 Dental journal of Hamadan University of Medical Sciences  
Impaction of third molars is a common phenomenon. The incidence of impacted third molars varies in different populations. Objectives: The aim of this study is to assess radiographic status (root development degree, angulation, and eruption level) of the third molar in Iranian population via panoramic radiographs. Patients and Methods: 647 patients, ranging in age from 17 -25, were selected from three regions of Iran. Based on their panoramic radiographs, their root development degree,
more » ... , and eruption levels were analyzed. Results: The angulation of upper third molars were vertical (44.6%), distoangular (44.1%), mesioangular (10.7%), and horizontal (0.6%). For lower third molars, the angulation was mesioangular (44.5%), vertical (33.8%), distoangular (12.2%), and horizontal (9.5%). The eruption levels of maxillary third molars were C > A> B, and for mandibular third molars they were A > B> C. The order of root development prevalence of the maxillary and mandibular third molars was complete > 2/3 > 1/3. Conclusions: The most common status of impaction of the third molars in the maxilla was vertical angulation, level C of eruption, and complete root formation. In the mandible it was mesioangular, level A of eruption, and complete root formation. Since the study sample consists of patients from the north, middle, and south of Iran, the sample can represent the whole population of Iran.
doi:10.17795/ajdr-28250 fatcat:3oowczzyyfcg7htj2e46owv2ra

Epidemiological Status of Third Molars in an Iranian Population

Mahnaz Sheikhi, Mitra Karbasi Kheir, Mohammad Ali Sadeghi
2016 Dental journal of Hamadan University of Medical Sciences  
Impaction of third molars is a common phenomenon. The incidence of impacted third molars varies in different populations. Objectives: The aim of this study is to assess radiographic status (root development degree, angulation, and eruption level) of the third molar in Iranian population via panoramic radiographs. Patients and Methods: 647 patients, ranging in age from 17 -25, were selected from three regions of Iran. Based on their panoramic radiographs, their root development degree,
more » ... , and eruption levels were analyzed. Results: The angulation of upper third molars were vertical (44.6%), distoangular (44.1%), mesioangular (10.7%), and horizontal (0.6%). For lower third molars, the angulation was mesioangular (44.5%), vertical (33.8%), distoangular (12.2%), and horizontal (9.5%). The eruption levels of maxillary third molars were C > A> B, and for mandibular third molars they were A > B> C. The order of root development prevalence of the maxillary and mandibular third molars was complete > 2/3 > 1/3. Conclusions: The most common status of impaction of the third molars in the maxilla was vertical angulation, level C of eruption, and complete root formation. In the mandible it was mesioangular, level A of eruption, and complete root formation. Since the study sample consists of patients from the north, middle, and south of Iran, the sample can represent the whole population of Iran.
doi:10.5812/ajdr.28250 fatcat:r4odt66hrbcevdfboe5ej5dnyy

Tuning New Fuzzy Control for Nonlinear Second Order System

Babak Ranjbar, Gholam Dashti, Ali Omidvar, Javad Mahmoodi, Hasan Karbasi
2014 International Journal of Hybrid Information Technology  
Cognitive method is used in this research to create portfilo of movement robot manipulator. Gradient descent (GD) fuzzy controller was used and robot's postures and trajectory were expected in MATLAB/SIMULINK environment. Fuzzy logic controller (FLC) is an influential nonlinear controller to certain and uncertain systems which it is based on artificial intelligent and computes the required torques using the nonlinear feedback control law. Practically a large amount of systems have uncertainties
more » ... accordingly this method has a challenge. Linear proportional-integral-derivative (PID) controller is a significant combination nonlinear stable-robust controller under condition of partly uncertain dynamic parameters of system. This technique is used to control of highly nonlinear systems especially in nonlinear time varient nonlinear dynamic system. To compensate for the dependence on model-free parameters, PID methodology is used. The nonlinear model dynamic formulation problem in uncertain system can be solved by using PID theorem. Proportional-Derivative-Integral (PID) theory is used to estimate the system dynamic.
doi:10.14257/ijhit.2014.7.6.15 fatcat:mtqbgwvmvrbvbnx5j5tgwuqj5u

Helicobacter pylori genotypes can predict gastric tissue histopathology: A longitudinal study of Iranian patients

Hossein Khedmat, Ali Karami, Zahra Safiri, Mohsen Amini, Ali Bakhtiari, Ashraf Karbasi, Mojgan Jayhounian, Hamidreza Jalalian, Saeed Taheri
2012 Journal of Infection and Public Health  
Several factors have been suggested to account for differences in the virulence of Helicobacter pylori infections in various populations. Evidence suggests the existence of different strains of H. pylori with different degrees of virulence. The present study aimed to investigate the gastric histopathology in Iranian patients infected with H. pylori and to investigate the relationship between the severity of gastritis and four different bacterial virulence-associated genotypes. Methods and
more » ... als: All of the patients with positive results from a pathological examination, a rapid urease test, and PCR analysis for H. pylori infection were consecutively included into the study. The classification and grading of gastritis were performed according to the Sydney System. Esophagitis was classified endoscopically according to the Savary-Miller grading system. The primers used in this study targeted 16S rRNa (521 bp), Urease A (411 bp), Cag A (400 bp), and 26 kDa (303 bp). Results: Twenty-eight patients were included in the study. The presence of Cag A showed a significant relationship with higher gastritis grades (3.0 ± 0.7 vs. 2.3 ± 0.9, p = 0.024) and higher scores for H. pylori infection (3.0 ± 0.7 vs. 2.3 ± 0.7, p = 0.027). The patients infected with 26 kDa-positive H. pylori had significantly higher infection scores (3.5 ± 0.6 vs. 2.5 ± 0.6, p = 0.020). Conclusion: This study showed that CagA-positive H. pylori infection is associated with more severe gastritis and with increased bacterial density and inflammation in the biopsy specimens. The 303-bp positive genotype was also significantly associated with higher grades of esophagitis. Additional in-depth trials will be helpful in extending our findings. Crown
doi:10.1016/j.jiph.2011.10.009 pmid:22541262 fatcat:oaifmbsam5eijnqbnj6cwo6hhq

Compressed sensing with probabilistic measurements: A group testing solution

Mahdi Cheraghchi, Ali Hormati, Amin Karbasi, Martin Vetterli
2009 2009 47th Annual Allerton Conference on Communication, Control, and Computing (Allerton)  
Detection of defective members of large populations has been widely studied in the statistics community under the name "group testing", a problem which dates back to World War II when it was suggested for syphilis screening. There, the main interest is to identify a small number of infected people among a large population using collective samples. In viral epidemics, one way to acquire collective samples is by sending agents inside the population. While in classical group testing, it is assumed
more » ... that the sampling procedure is fully known to the reconstruction algorithm, in this work we assume that the decoder possesses only partial knowledge about the sampling process. This assumption is justified by observing the fact that in a viral sickness, there is a chance that an agent remains healthy despite having contact with an infected person. Therefore, the reconstruction method has to cope with two different types of uncertainty; namely, identification of the infected population and the partially unknown sampling procedure. In this work, by using a natural probabilistic model for "viral infections", we design non-adaptive sampling procedures that allow successful identification of the infected population with overwhelming probability 1 − o(1). We propose both probabilistic and explicit design procedures that require a "small" number of agents to single out the infected individuals. More precisely, for a contamination probability p, the number of agents required by the probabilistic and explicit designs for identification of up to k infected members is bounded by m = O(k 2 (log n)/p 2 ) and m = O(k 2 (log 2 n)/p 2 ), respectively. In both cases, a simple decoder is able to successfully identify the infected population in time O(mn).
doi:10.1109/allerton.2009.5394829 fatcat:iy5bvgtdorhejac6cpa7qwctva

High P-T phase transitions and P-V-T equation of state of hafnium

Rostislav Hrubiak, Vadym Drozd, Ali Karbasi, Surendra K. Saxena
2012 Journal of Applied Physics  
The EOS was first proposed by Brosh et al. 11 and has been used by Karbasi et al. 12 to obtain thermodynamically consistent PVT equations of state for several metals.  ... 
doi:10.1063/1.4726211 fatcat:f7rvac6c65ccjobsiy2im5lome

The effective family and personality factors on felony in adolescent felons of Khorramabad house of correction

mandana Saki, mozhgan Jariani, mitra Safa, ali farhadi, fatemeh Ghasemi, afsaneh Badrizadeh, elham Karbasi
2009 Yafteh  
Social damage is one of the problems which destroys the active manpower and young population in the country and also prevents social development. Family is the first environment in which social ground for the child is provided.Any dispute, controversy or inferiority complex in the family may lead to wrong doings The present study aims at the effective family and personality factors on felony in felon adolescents kept in Khorramabad bouse of correction. Materials and Methods: This descriptive-
more » ... alytic study was carried out on all of the adolescents in Khorramabad house of correction as case group selected using census random sampling and high school students as control group selected by cluster random sampling. Data gathering tool was a 2-part questionnaire including demographic information and standard SCL 90 questionnaire. Results: Results showed that there is a significant relationship between the place of residence, failure in school program, economic status of the family, parents presence, fathers job and education, mothers job and education, parents inter personal relationship and family conflicting. The results also showed that aggression, anxiety, depression, somatic complain, obsessive compulsive, inter personality sensitivity, Psychotic, paranoid and phobia had a significant difference in the case and control groups. Conclusion: Regarding the fact that family environment is considered as the most important educative factor and no social damage has not occurred out of family influence, so no society can claim to be healthy unless to have healthy families.
doaj:74b5f9a2854149fcb041907aa58a10c9 fatcat:jyw5dxzybvehhc5zx25wiuzo5m
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