ON φ-PSEUDO ALMOST VALUATION RINGS

Afsaneh Esmaeelnezhad,Parviz Sahandi 대한수학회 2015 대한수학회보 Vol.52 No.3

The purpose of this paper is to introduce a new class of rings that is closely related to the classes of pseudo valuation rings (PVRs) and pseudo-almost valuation domains (PAVDs). A commutative ring R is said to be a φ-ring if its nilradical Nil(R) is both prime and comparable with each principal ideal. The name is derived from the natural map φ from the total quotient ring T(R) to R localized at Nil(R). A prime ideal P of a φ-ring R is said to be a φ-pseudo-strongly prime ideal if, whenever x, y ∈ RNil(R) and (xy)φ(P) ⊆ φ(P), then there exists an integer m ≥ 1 such that either xm ∈ φ(R) or ymφ(P) ⊆ φ(P). If each prime ideal of R is a φ-pseudo strongly prime ideal, then we say that R is a φ-pseudo-almost valuation ring (φ-PAVR). Among the properties of φ-PAVRs, we show that a quasilocal φ-ring R with regular maximal ideal M is a φ-PAVR if and only if V = (M : M) is a φ-almost chained ring with maximal ideal √MV . We also investigate the overrings of a φ-PAVR.

Nanostructures of chemically modified multi-walled carbon nanotubes and poly(3-hexylthiophene) to improve photophysic/photovoltaic features

Afsaneh Hadi,Mohammad Hossein Hekmatshoar,Farhang Abbasi,Samira Agbolaghi 한국탄소학회 2021 Carbon Letters Vol.31 No.1

Multi-walled carbon nanotube/poly(3-hexylthiophene) (CNT/P3HT) and CNT-graft-poly(3-dodecylthiophene) (PDDT)/P3HT nanohybrids were applied in active layers to study the effects of these nanostructures on the polymer solar cell (PSC) performance. The charge-carrier dynamics and photophysics were studied in the binary and ternary systems based on P3HT, pre-developed nanostructures and/or phenyl-C71-butyric acid methyl ester (PC71BM) through the electrochemical impedance spectroscopy and morphological analyses. The weaker bimolecular recombination in the photoactive layer, consisting of CNT-graft-PDDT/P3HT nanostructures, was confirmed by short-circuit current (Jsc) and open-circuit voltage (Voc) measurements as a function of light intensity. PSC composed of P3HT:PC71BM:CNT-graft-PDDT/P3HT PSC exhibited the highest PCE of 4.18% with significantly increased Jsc and Voc.

Effects of intraperitoneal administration of Papaver rhoeas L. extract on mouse ovaries

Afsaneh Golkar-Narenji,Hussein Eimani,Firooz Samadi,Saeid Hasani,Abdol hossein Shahverdi,Poopak Eftekhari-Yazi,Mohammad Kamalinejad 한국통합생물학회 2013 Animal cells and systems Vol.17 No.2

This research studies the effect of water-alcohol Papaver rhoeas L. (P. rhoeas) extract on mouse ovaries and in vitro development (IVD) of oocytes. Different dosages of P. rhoeas extract (25, 50, 100, 200 mg/kg body weight) were injected intraperitoneally (i.p.) during a period of 12 days. Following superovulation, the numbers of ovulated oocytes, the rates of in vitro fertilization, IVD and the cellularity of blastocysts were recorded. Additionally, effect of the best dosage on ovarian follicle population and the ability of immature oocytes to mature in vitro were evaluated. Administration of 200 mg/kg significantly increased the percentage of 48 cells, morula and blastocyst embryos compared to the control group (pB0.05). Furthermore, total cellularity of blastocysts was significantly higher with the administration of 200 mg/kg of extract in comparison to control group (pB0.05). Therefore, the most effective dosage was considered to be 200 mg/kg. With the administration of 200 mg/kg no marked changes were observed in the IVM rate of retrieved oocytes from treated group in comparison to control group. Furthermore, the percentage of ovarian follicles was not significantly different when compared to control group. Also, during visual evaluations no abnormal apoptosis was detected in follicles of ovaries treated with 200 mg/kg when compared to control group. Higher IVD and blastocyst cellularity in the group treated with defined dosage of P. rhoeas indicates that the extract affects ovaries in a dose dependent manner. The extract possibly increases the quality of ovulated oocytes and IVD competence of oocytes.

Functionalized nanostructured silica by tetradentate-amine chelating ligand as efficient heavy metals adsorbent : Applications to industrial effluent treatment

Afsaneh Shahbazi,Habibollah Younesi,Alireza Badiei 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.9

Organofunctionalized nanostructured silica SBA-15 with tri(2-aminoethyl)amine tetradentate-amine ligandwas synthesized and applied as adsorbent for the removal of Cu2+, Pb2+, and Cd2+from both synthetic wastewater andreal paper mill and electroplating industrial effluents. The prepared materials were characterized by XRD, N2 adsorp-tion-desorption, TGA, and FT-IR analysis. The Tren-SBA-15 was found to be a fast adsorbent for heavy metal ionsfrom single solution with affinity for Cu2+, Pb2+, than for Cd2+due to the complicated impacts of metal ion electronega-tivity. The kinetic rate constant decreased with increasing metal ion concentration due to increasing of ion repulsionforce. The equilibrium batch experimental data is well described by the Langmuir isotherm. The maximum adsorptioncapacity was 1.85 mmol g−1for Cu2+, 1.34 mmol g−1for Pb2+, and 1.08 mmol g−1for Cd2+at the optimized adsorptionconditions (pH=4, T=323 K, t=2 h, C0=3mmol L−1, and adsorbent dose=1 g L−1). All Gibbs energy was negative asexpected for spontaneous interactions, and the positive entropic values from 103.7 to 138.7 J mol−1K−1also reinforcedthis favorable adsorption process in heterogeneous system. Experiment with real wastewaters showed that approxi-mately a half fraction of the total amount of studied metal ions was removed within the first cycle of adsorption. Hence,desorption experiments were performed by 0.3M HCl eluent, and Tren-SBA-15 successfully reused for four adsorp-tion/desorption cycles to complete removal of metal ions from real effluents. The regenerated Tren-SBA-15 displayedalmost similar adsorption capacity of Cu2+, Pb2+, and Cd2+even after four recycles. The results suggest that Tren-SBA-15is a good candidate as an adsorbent in the removal of Cu2+, Pb2+, and Cd2+from aqueous solutions.

Effects of Soy Bread on Cardiovascular Risk Factor, Inflammation and Oxidative Stress in Women With Active Rheumatoid Arthritis: A Randomized Double-Blind Controlled Trial

Afsaneh Sayyaf,Ehsan Ghaedi,Fatemeh Haidari,Elham Rajaei,Kambiz Ahmadi-engali,Bijan Helli 한국임상영양학회 2024 Clinical Nutrition Research Vol.13 No.1

Rheumatoid arthritis (RA) is a systemic inflammatory autoimmune disorder with widespread synovitis. Isoflavones, the main active component of soy, have been reported to have potent anti-inflammatory effects; the previous RA animal models showed the promising effect of soy supplementation. We aimed to evaluate the effect of soy bread on inflammatory markers and lipid profiles in RA patients. The present study was designed as a randomized controlled trial. RA patients were randomly allocated to obtain soy bread (n = 22) or placebo bread (n = 22) for 8 weeks. Fasting serum levels of lipid profile, total antioxidant capacity (TAC), tumor necrosis factor-α (TNF-α), C-reactive protein (CRP), and DAS28 were checked. Findings showed that there were no significant differences between the two groups in physical activity and dietary intake at the beginning of the study and the end of the study. There were no significant differences between the two groups in measured lipid profile markers, including high-density lipoprotein, low-density lipoprotein, total cholesterol, triglyceride, and very low-density lipoprotein, at the end of the trial. In addition, TAC and CRP also were not significant at the end of the trial between the 2 groups (0.66 and 0.12, respectively). However, the serum levels of TNF-α reduced significantly in the soy bread group at the end of the intervention (p < 0.000) and compared with the control group (p < 0.019). Soy bread consumption only decreased circulating TNF-α serum concentration. Other outcome measures were not changed following supplementation. Future long-term, well-designed studies are needed to confirm these findings.

Tularemia, a re-emerging infectious disease in Iran and neighboring countries

Afsaneh Zargar,Max Maurin,Ehsan Mostafavi 한국역학회 2015 Epidemiology and Health Vol.37 No.-

OBJECTIVES: Tularemia is a zoonotic disease transmitted by direct contact with infected animals and through arthropod bites, inhalation of contaminated aerosols, ingestion of contaminated meat or water, and skin contact with any infected material. It is widespread throughout the northern hemisphere, including Iran and its neigh-bors to the north, northeast, and northwest. METHODS: In this paper, the epidemiology of tularemia as a re-emerging infectious disease in the world with a focus on Iran and the neighboring countries is reviewed. RESULTS: In Iran, positive serological tests were first reported in 1973, in wildlife and domestic livestock in the northwestern and southeastern parts of the country. The first human case was reported in 1980 in the south-west of Iran, and recent studies conducted among at-risk populations in the western, southeastern, and south-western parts of Iran revealed seroprevalences of 14.4, 6.52, and 6%, respectively. CONCLUSIONS: Several factors may explain the absence of reported tularemia cases in Iran since 1980. Tula-remia may be underdiagnosed in Iran because Francisella tularensis subspecies holarctica is likely to be the major etiological agent and usually causes mild to moderately severe disease. Furthermore, tularemia is not a disease extensively studied in the medical educational system in Iran, and empirical therapy may be effective in many cases. Finally, it should be noted that laboratories capable of diagnosing tularemia have only been estab-lished in the last few years. Since both recent and older studies have consistently found tularemia antibodies in humans and animals, the surveillance of this disease should receive more attention. In particular, it would be worthwhile for clinical researchers to confirm tularemia cases more often by isolating F. tularensis from infected humans and animals.

A Recombinant Plasmodium vivax Apical Membrane Antigen-1 to Detect Human Infection in Iran

Afsaneh Motevalli Haghi,Mohammad Reza Khoramizade,Mehdi Nateghpour,Gholam Hossein Edrissian,Mohammad Reza Eshraghian,Zargham Sepehrizadeh 대한기생충학열대의학회 2012 The Korean Journal of Parasitology Vol.50 No.1

Impact of Postharvest Hot Salicylic Acid Treatment on Fresh-Cut Pomegranate Arils Browning and Nutritional Quality in Fresh-Cut Pomegranate

Afsaneh Yousefpour Dokhanieh,Morteza Soleimani Aghdam,Mohammad Ali Askari Sarcheshmeh 한국원예학회 2016 Horticulture, Environment, and Biotechnology Vol.57 No.4

In this study, we investigated the impact of hot salicylic acid treatment on the browning and nutritional quality of fresh-cut pomegranate arils during 12 days of storage at 4°C. Aril browning was concurrent with malondialdehyde(MDA) and H2O2 accumulation. Due to reduced polyphenol oxidase (PPO) activity in conjunction with higher phenylalanine ammonia-lyase (PAL) activity, pomegranate arils treated with hot salicylic acid exhibited higher total phenolic and anthocyanin contents during storage at 4°C for 12 days, leading to arils with higher DPPH radical scavenging capacity. Pomegranate arils treated with hot salicylic acid also exhibited lower H2O2 accumulation, which was caused by higher activity of the antioxidant enzymes catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD), and glutathione reductase (GR) during the storage period. The higher ascorbic acid content in pomegranate arils treated with hot salicylic acid can be attributed to higher APX/GR system activity. Thus, hot salicylic acid treatment not only enhances the health-promoting attributes of arils due to increased antioxidant molecule accumulation, but it also delays aril browning by increasing ROS scavenging enzyme activity, which helps maintain membrane integrity, as revealed by reduced MDA accumulation.

Applicability of Radioguided Occult Lesion Localization for Non-Palpable Benign Breast Lesions, Comparison with Wire Localization, a Clinical Trial

Alikhassi, Afsaneh,Saeed, Farzanefar,Abbasi, Mehrshad,Omranipour, Ramesh,Mahmoodzadeh, Habibollah,Najafi, Massoome,Gity, Masoumeh,Kheradmand, Ali Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.7

Background: This study was designed to compare radioguided versus routine wire localization of nonpalpable non-malignant breast lesions in terms of efficacy for complete excision, ease of use, time saving, and cosmetic outcome. Materials and Methods: Patients with non-palpable breast masses and non-malignant core biopsy results who were candidates for complete surgical lumpectomy were enrolled and randomly assigned to radioguided or wire localization groups. Radiologic, surgical, and pathologic data were collected and analyzed to determine the difficulty and duration of each procedure, ease of use, accuracy, and cosmetic outcomes. Results: This prospective randomized study included 60 patients, randomly divided into wire guided localization (WGL) or radioguided occult lesion localization (ROLL) groups. The mean duration of localization under ultrasound guidance was shorter in the ROLL group (14.4 min) than in the WGL group (16.5 min) (p<0.001). The ROLL method was significantly easier for radiologists (p=0.0001). The mean duration of the surgical procedure was 22.6 min (${\pm}10.3min$) for ROLL and 23.6 min (${\pm}9.6min$) for WGL (p=0.6), a non-significant difference. Radiography of the surgical specimens showed 100% lesion excision with clear margins, as proved by pathologic examination, with both techniques. The surgical specimens were slightly heavier in the ROLL group, but the difference was not significant (p=0.06). Conclusions: The ROLL technique provides effective, fast, and simple localization and excision of non-palpable non-malignant breast lesions.

Risk of Breast Cancer in Relation to Reproductive Factors in North-west of Iran, 2013-2014

Veisy, Afsaneh,Lotfinejad, Shirin,Salehi, Kamal,Zhian, Faegh Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.2

More than one million new patients suffer from breast cancer annually in the world. In developed countries, breast cancer is the most common malignancy diagnosed among women, and in developing regions, it often ranks second to cervical cancer. This study aimed to investigate the relationship between incidence of breast cancer and reproductive factors in North-West of Iran. This retrospective analytical control-case study was conducted with 235 breast cancer patients and 235 women in the control group. Data collection tools included a set of questions with interviews and patient medical records. Data were analyzed using statistical tests: t-test, Chi-square, Fisher, and Pearson correlation coefficient. Significantly increased risks were associated between breast cancer and older age at first pregnancy, age at menopause and history of contraceptive use. A trend for decreasing risk were observed with increasing parity. Findings of this study showed no association between breast cancer and age at menarche. The study results suggested that physiological and reproductive factors may play important roles in the development breast cancer among Iranian women.