Breast Cancer Trend in Iran from 2000 to 2009 and Prediction till 2020 using a Trend Analysis Method

Zahmatkesh, Bibihajar,Keramat, Afsaneh,Alavi, Nasrinossadat,Khosravi, Ahmad,Kousha, Ahmad,Motlagh, Ali Ghanbari,Darman, Mahboobeh,Partovipour, Elham,Chaman, Reza Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.3

Background: Breast cancer is the most common cancer in women worldwide with a rising incidence rate in most countries. Considering the increase in life expectancy and change in lifestyle of Iranian women, this study investigated the age-adjusted trend of breast cancer incidence during 2000-2009 and predicted its incidence to 2020. Materials and Methods: The 1997 and 2006 census results were used for the projection of female population by age through the cohort-component method over the studied years. Data from the Iranian cancer registration system were used to calculate the annual incidence rate of breast cancer. The age-adjusted incidence rate was then calculated using the WHO standard population distribution. The five-year-age-specific incidence rates were also obtained for each year and future incidence was determined using the trend analysis method. Annual percentage change (APC) was calculated through the joinpoint regression method. Results: The bias adjusted incidence rate of breast cancer increased from 16.7 per 100,000 women in 2000 to 33.6 per 100,000 women in 2009. The incidence of breast cancer had a growing trend in almost all age groups above 30 years over the studied years. In this period, the age groups of 45-65 years had the highest incidence. Investigation into the joinpoint curve showed that the curve had a steep slope with an APC of 23.4% before the first joinpoint, but became milder after this. From 2005 to 2009, the APC was calculated as 2.7%, through which the incidence of breast cancer in 2020 was predicted as 63.0 per 100,000 women. Conclusions: The age-adjusted incidence rate of breast cancer continues to increas in Iranian women. It is predicted that this trend will continue until 2020. Therefore, it seems necessary to prioritize the prevention, control and care for breast cancer in Iran.

An Optimized Congestion Control and Path Management Scheme for SCTP

Afsane Zahmatkesh,Amir Hossein Mohajerzadeh 보안공학연구지원센터 2011 International Journal of Future Generation Communi Vol.4 No.4

Software Defined Multihop Wireless Networks: Promises and Challenges

Afsane Zahmatkesh,Thomas Kunz 한국통신학회 2017 Journal of communications and networks Vol.19 No.6

In multihop wireless networks (MWNs), wireless nodescan communicate with each other through intermediate nodeswithout the help of any infrastructure. Therefore, wireless nodesare responsible for organizing and configuring the network, andthe management of the network is distributed between the nodes. Consequently, it is difficult to overcome the existing challengessuch as node mobility and dynamic topology changes, energy constraints,etc. Software defined networking (SDN) is a promisingsolution, which decouples the control plane and the data planeto overcome the challenges of traditional networks. In the SDNconcept, a logically centralized controller makes routing decisionsbased on the global view of the network and the requirements ofapplications, and then programs the network. Therefore, it helpsto optimize resource allocation and improve the network performance. In this paper, we consider the benefits and the various aspectsof applying the SDN concept in MWNs (SDMWN). We firstintroduce MWNs, existing challenges and the motivation for applyingSDN to such networks. Then, after explaining the SDN concept,we review the related work in SDMWN. Finally, we discussthe challenges in applying SDN and future research directions inthis area.

A2 Allele Polymorphism of the CYP17 Gene and Prostate Cancer Risk in an Iranian Population

Karimpur-Zahmatkesh, Arezu,Farzaneh, Farah,Pouresmaeili, Farkhondeh,Hosseini, Jalil,Azarghashb, Eznollah,Yaghoobi, Mohammad Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.2

Background: Studies have shown that alterations of steroid hormone metabolism, particularly involving testosterone, affect the risk of prostate cancer. Therefore, genetic variation in genes of enzymes which are involved could be of importance. The gene most interest is CYP17, whose enzyme product has an essential role in testosterone hormone synthesis. Some studies have indicated that the A2 allele polymorphism of CYP17 associated with increased risk of prostate cancer that could be affected by ethnicity. Therefore, the aim of this study was determination of presence or absence of the A2 allele in patients with prostate cancer. Materials and Methods: We studied the association of A2 allele and prostate cancer among 74 patients with prostate cancer and 128 healthy men which were referred to hospitals of SBMU. Results: This study revealed a significant association between prostate cancer risk and the A2 allele in an Iranian population so that A1A2 and A2A2 genotypes were more common in cases than controls with P-values of 0.029 and 0.010, respectively. Conclusions: Results of our study support a possible role of the A2 allele in sporadic prostate cancer development in Iran, in line with findings elsewhere.

Analytical study of slant end-plate connection subjected to elevated temperatures

F. Zahmatkesh,M.H. Osman,E. Talebi,A.B.H. Kueh 국제구조공학회 2014 Steel and Composite Structures, An International J Vol.17 No.1

Due to thermal expansion, the structural behaviour of beams in steel structures subjected to temperature increase will be affected. This may result in the failure of the structural members or connection due to extra internal force in the beam induced by the thermal increase. A method to release some of the thermally generated internal force in the members is to allow for some movements at the end supports of the member. This can be achieved by making the plane of the end-plate of the connection slanted instead of vertical as in conventional design. The present paper discusses the mechanical behaviour of beams with bolted slant end-plate connection under symmetrical gravity loads, subjected to temperature increase. Analyses have been carried out to investigate the reduction in internal force with various angles of slanting, friction factor at the surface of the connection, and allowable temperature increase in the beam. The main conclusion is that higher thermal increase is tolerable when slanting connection is used, which means the risk of failure of structures can be reduced.

THE COMPOSITION SERIES OF IDEALS OF THE PARTIAL-ISOMETRIC CROSSED PRODUCT BY SEMIGROUP OF ENDOMORPHISMS

ADJI, SRIWULAN,ZAHMATKESH, SAEID Korean Mathematical Society 2015 대한수학회지 Vol.52 No.4

Let ${\Gamma}^+$ be the positive cone in a totally ordered abelian group ${\Gamma}$, and ${\alpha}$ an action of ${\Gamma}^+$ by extendible endomorphisms of a $C^*$-algebra A. Suppose I is an extendible ${\alpha}$-invariant ideal of A. We prove that the partial-isometric crossed product $\mathcal{I}:=I{\times}^{piso}_{\alpha}{\Gamma}^+$ embeds naturally as an ideal of $A{\times}^{piso}_{\alpha}{\Gamma}^+$, such that the quotient is the partial-isometric crossed product of the quotient algebra. We claim that this ideal $\mathcal{I}$ together with the kernel of a natural homomorphism $\phi:A{\times}^{piso}_{\alpha}{\Gamma}^+{\rightarrow}A{\times}^{iso}_{\alpha}{\Gamma}^+$ gives a composition series of ideals of $A{\times}^{piso}_{\alpha}{\Gamma}^+$ studied by Lindiarni and Raeburn.

THE COMPOSITION SERIES OF IDEALS OF THE PARTIAL-ISOMETRIC CROSSED PRODUCT BY SEMIGROUP OF ENDOMORPHISMS

Sriwulan Adji,Saeid Zahmatkesh 대한수학회 2015 대한수학회지 Vol.52 No.4

Let Г + be the positive cone in a totally ordered abelian group Γ, and α an action of Г+ by extendible endomorphisms of a C∗-algebra A. Suppose I is an extendible α-invariant ideal of A. We prove that the partial-isometric crossed product I := I ×piso α Г+ embeds naturally as an ideal of A× piso α Г+, such that the quotient is the partial-isometric crossed product of the quotient algebra. We claim that this ideal I together with the kernel of a natural homomorphism Ø : A× piso α + → A × piso α Г+ gives a composition series of ideals of A ×piso α Г+ studied by Lindiarni and Raeburn.

Adverse events following immunisation with the first dose of sputnik V among Iranian health care providers

Reza Jafarzadeh Esfehani,Masood Zahmatkesh,Reza Goldozian,Javad Farkhonde,Ehsan Jaripour,Asghar Hatami,Hamid Reza Bidkhori,Seyyed Khosro Shamsian,Seyyed AliAkbar Shamsian,Faezeh Mojahedi 대한백신학회 2023 Clinical and Experimental Vaccine Research Vol.12 No.1

Purpose: Since late 2019, the novel coronavirus disease has been a global concern, and alongside preventive strategies, including social distancing and personal hygiene, vaccination is now the primary hope for controlling the pandemic. Sputnik V is an adenovirus vector vaccine used against coronavirus disease 2019 (COVID-19) among Iranian health care providers, and there is a lack of information regarding the Adverse Events Following Immunisation (AEFI) by Sputnik V among the Iranian population. The present study aimed to evaluate AEFI by Sputnik V vaccine among Iranian population. Materials and Methods: Every member of the Islamic Republic of Iran Medical Council received their first dose of the Sputnik V vaccine in Mashhad (Iran) and was referred to receive their second dose enrolled in the present study and asked to fill an English language checklist asking about development of any AEFI following immunization with the first dose of Sputnik V vaccine. Results: A total number of 1,347 with a mean±standard deviation age of 56.2±9.6 years filled the checklist. Most of the participants were male (838 [62.2%]). The present study demonstrated that immunization with the first dose of Sputnik V results in at least one AEFI in 32.8% of the Iranian medical council members. Most of the AEFI was related to musculoskeletal symptoms, including myalgia. By considering the age of 55 years as a cut-off point, individuals younger than 55 had a higher rate of AEFI (41.3% vs. 22.5%, p=0.0001). Male gender, use of analgesics, beta-blockers, and previous COVID-19 infection have a lower chance of developing AEFI (p<0.05). Conclusion: The present study demonstrated that most of the AEFI was related to musculoskeletal symptoms, including myalgia, and older individuals, male gender and those receiving analgesics and beta-blockers were less likely to develop AEFI following immunization with the first dose of Sputnik V.

Electrofacies analysis of the Asmari reservoir, Marun oil field, SW Iran

Bahman Soleimani,Iman Zahmatkesh,Hossein Sheikhzadeh 한국지질과학협의회 2020 Geosciences Journal Vol.24 No.2

This article integrates core and well log data to determine reservoir electrofacies of the Oligo-Miocene Asmari Formation in the western Dezfol Embayment, SW Iran. At the start, an unsupervised neural network was employed based on the selforganizing map (SOM) technique to identify and extract electrofacies groups of Asmari Formation in the Marun oilfield, which is a mixed siliciclastic and carbonate reservoir. Using inexpensive and accessible petrophysical wireline logs, such as gamma ray, sonic, density and neutron, along with calculated reservoir data (water saturation and effective porosity) from 12 reference wells and their correlation with reservoir core data, led to recognition of seven electrofacies including first four class as limestone rocks (EF1–EF4) and others three classes as sandstone rocks (EF5–EF7). Based on the porosity and permeability maps and water saturation at different depth levels, EF4 and EF7 with low porosity and permeability, high water saturation are considered as non-reservoir relating mostly to sedimentary textures of mudstone and argillaceous sandstones, respectively. By contrast, EF1 and EF5 with high values of porosity, permeability and low percent of water saturations characterize the best reservoir quality rocks, and EF2, EF3 and EF6 have medium reservoir quality. EF1 consists of dolomitic skeletal grainstone, in which biomoldic, vuggy and intercrystalline porosity is the dominant pore type, while the intergranular porosity is the major pore type in EF4 as an unconsolidated sand electrofacies. In general, the results obtained in this study indicate a satisfactory agreement between core data and log facies. This correlation allows rockfacies to be classified in the cored wells and predict those facies in the uncored wells. Using the methodology outlined here, it is possible to track reservoir electrofacies from conventional well log data.

POSITIVE SOLUTION FOR A CLASS OF NONLOCAL ELLIPTIC SYSTEM WITH MULTIPLE PARAMETERS AND SINGULAR WEIGHTS

G.A. AFROUZI,H. ZAHMATKESH 한국전산응용수학회 2017 Journal of applied mathematics & informatics Vol.35 No.1

This study is concerned with the existence of positive solution for the following nonlinear elliptic system −M1 (∫ Ω |x|−ap|∇u|p dx ) div(|x|−ap|∇u|p−2∇u) = |x|−(a+1)p+c1 ( 1A1(x)f(v) + 1B1(x)h(u) ) ; x ∈ Ω; −M2 (∫ Ω |x|−bq|∇v|q dx ) div(|x|−bq|∇v|q−2∇v ) = |x|−(b+1)q+c2 ( 2A2(x)g(u) + 2B2(x)k(v) ) ; x ∈ Ω; u = v = 0; x ∈ @Ω; where Ω is a bounded smooth domain of RN with 0 ∈ Ω; 1 < p; q < N; 0 ≤ a < N−p p ; 0 ≤ b < N−q q and i; i; ci are positive parameters. Here Mi;Ai;Bi; f; g; h; k are continuous functions and we discuss the existence of positive solution when they satisfy certain additional conditions. Our approach is based on the sub and super solutions method