38 research outputs found

    Population dynamic and stock assessment of lobster resources of Cha-bahar region (with particular ref. to Panulirus homarus)

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    Amoungst the three spiny lobster species in southern Iranian waters, Panulirus homarus is the only commercial species with a total landings of 20-45 tons per year indicating a decrease in both landings and CPIJE in recent years. Fishing has been regulated according to the no. of fisherman and effort, and trap ha's replaced the gillnef since 1994. Fishing is carried out along the rocky shores of Chah-Bahar region through different landing places by local fisherman for a period of about two months. Most of catch is exported mainly frozen. This research was sposored by the Fisheries Research Dept. and aimed to work on the population dynamics and stock assessment in order to stablish a better understandings of the stock and hence a proper management in this region. Sampling was done for. 10 successive months in _5 major landing places from 1994 to 1995 with no sampling during the monsoon period through June to July. Althogethere, 8500 specimen were collected and the biometry was done accordings to the sex, region and month. Average total length, total weight and carapace length was obtained 216mm., 452 gr. and 75mm. respectively. Total length-weight relationship of both sexes was calculated and follows the cubic law. Regression coefficients for both sexes was 2.8231, males 2.9616, total females 2.7490, berried females 2.6611- and non-berried female

    Recognition of the factors affecting survival in colon and rectal cancer patients referred to RCGLD center of Shahid Beheshti University of Medical Sciences: accelerated failure time parametric survival analysis with frailty

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    زمینه و هدف: عوامل تشخیصی سرطان کولورکتال بر بقای بیماران و تجویز درمان مناسب موثر است. با توجه به افزایش نرخ‌ این سرطان در ایران مخصوصاً در سنین جوانی و اینکه عوامل تشخیصی سرطان کولورکتال به عنوان یک سرطان واحد درک دقیقی از دو سرطان کولون و رکتوم و عوامل موثر بر آن فراهم نمی‌کند، بنابراین مطالعه حاضر به منظور تعیین عوامل خطر اختصاصی سرطان‌های کولون و رکتوم انجام گردید. روش بررسی: در این مطالعه توصیفی-تحلیلی تعداد 1219 بیمار مبتلا به سرطان‌های کولون و رکتوم طی دی ‌ماه 1383 تا مهرماه 1387 مورد بررسی قرار گرفتند. متغیر‌های دموگرافیک و بالینی در قالب تحلیل‌های یک متغیره و چند متغیره با رویکرد الگوی زمان شکست شتابنده تحلیل بقا و با انجام تصحیح توسط پارامتر شکنندگی توسط نرم‌افزار STATA 10 تجزیه و تحلیل شدند. یافته‌ها: بر اساس نتایج حاصل از این مطالعه برای سرطان کولون در زنان، بیماران بدون سابقه‌ی بیماری التهاب روده، بیماران با درجه‌ی تومور ضعیف متمایز شده و بیماران با مرحله‌ی پاتولوژیک I تومور احتمال بقای بالاتری به دست آمد و برای دو عامل سابقه‌ی مصرف الکل و اندازه‌ی تومور رابطه آماری معنی‌داری مشاهده نشد. همچنین برای سرطان رکتوم، بیماران با نوع اولین درمان عمل جراحی احتمال بقای بالاتری داشتند و برای دو عامل سابقه‌ی شخصی ابتلا به سرطان و مرحله‌ی پاتولوژیک تومور رابطه آماری معنی‌داری مشاهده نشد. همچنین برای هر دو نوع سرطان، رده‌‌های با شاخص توده بدنی 9/29–25 و بیشتر از 30 شاخص توده‌ی بدنی به ترتیب احتمال بقای بالاتر و رده‌ی کمتر از 5/18 احتمال بقای پایین‌تری را نشان دادند. در مجموع احتمال بقای بیماران مبتلا به سرطان رکتوم در مقایسه با بیماران مبتلا به سرطان کولون بالاتر بود. نتیجه‌گیری: ارزیابی جداگانه ی کولون و رکتوم، به درک بیشتری از عوامل موثر بر این سرطان‌ها می‌انجامد و می‌تواند در طراحی کارآزمایی‌های بالینی، تشخیص بهتر بیماری و یا تجویز درمان بهینه و اختصاصی کمک نماید

    Autoethnography: a new research method in nursing

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    Introduction: has been used gradually in nursing research. While this method is important in nursing, there are not enough Persian manuscripts. Therefore, this study was performed to review previous researches in order to clarify and describe definitions, classifications, principles and conceptual bases of autoethnography. Persian and foreign articles and books were used in this review study. Autoethnography is one of the most modern methods of qualitative research. It Method: Nursing and Allied Health Literature (CINAHL), ProQuest, PsycINFO, Social Sciences Index, ScienceDirect, Scopus, and Medline databases. Articles from each of these databases were examined to identify major themes, as well as areas of agreement and disagreement across disciplines. Keywords of "autoethnography" and "nursing" were searched in Cumulative Index to Results: explores personal experiences as the sources of data. Autoethnography is a subgroup of ethnography. In this method, the researcher Conclusion: knowledge. Autoethnography is a major method in nursing research that can develop new Keywords: autoethnography, qualitative research, methodology, nursin

    The efficacy of the emotion regulation intervention on coping styles in patients with alexithymia

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    Background and Purpose: Alexithymia that is known as a kind of insufficiency in emotion regulation is a dangerous factor for many mental disorders. This study is conducted to evaluate the effectiveness of emotion regulation intervention on coping styles in patients with the symptoms of alexithymia.Materials and methods: The research method is experimental with the pretest – post-test and control group. The study population has included the B.A students of Kharazmi University in the year 2014. The study sample has been consisted of 40 students who had the symptoms of alexithymia in the Kharazmi University in the year 2014; these students in the scale of alexithymia have been scored higher than 60 and during the interviews they have been approved in terms having the symptoms of alexithymia and the lack of accompanying symptoms. Then, by getting their permission, these people have been randomly assigned in two intervention and control groups (N =20). But with the primary reduction of the sample, the number of participants in each group has been reduced to 12 people. The intervention group has been trained in 8 sessions of emotion regulation intervention training that each session has been lasted for 90 minutes per week. But the control group did not receive any training programs. The research tools have been consisted of the Tehran Coping Styles Inventory of Karvar et al (1989) and Toronto alexithymia of Besharat (2007). After collecting the data, in addition to using the descriptive statistics, the covariance analysis has been used to analyze the data.Results: The data analysis has shown that the emotion regulation intervention will significantly increase the use of problem-focused coping style (p<0.05).  Conclusion: According to the results of this study, the emotion regulation intervention can be an effective method to improve the problems that are associated with alexithymia in the patients who have alexithymia, and it can be considered as a preventive intervention to prevent the bigger problems of the people who have alexithymia

    Complementary investigation and taxonomic identification of starfishes, (Echinodermata: Asteroidea) from the Northern Persian Gulf, Iran

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    Sea Stars are one of the most incredible creatures in the coastal and open waters. In this study, 11 species of starfishes have been identified which belonging to six genera and five families in northern islands of Persian Gulf during May 2017 to September 2018. Among the species, Astropecten hemprichi (Müller & Troschel, 1842), Astropecten indicus (Döderlein, 1888), Astropecten polyacanthus polyacanthus (Muller and Troschel, 1842), Astropecten polyacanthus phragmorous (Muller and Troschel, 1842), Luidia hardwicki (Gray, 1840), Aquilonastra iranica (Mortensen, 1940), Linckia multifora (Lamarck, 1816), Culcita novaeguineae (Muller & Troschel, 1842) and Pentaceraster mammillatus (Audouin, 1826) have been reported in the past. The species of Aquilonastra watersi (O'Loughlin and Rowe, 2006) and Linckia laevigata (Linnaeus, 1758) are new recordsin the Persian Gulf

    ANTIBIOTIC SUSCEPTIBILITY PATTERNS OF ISOLATED BACTERIA FROM BILE FLUIDS OF PATIENTS WITH GALLSTONE DISEASE IN ISFAHAN CITY (IRAN)

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    Bacterial infections are one of the important agents in the creation of gallstones in the gallbladder. In recent years the spread of antibiotic-resistant bacteria such as extended-spectrum beta-lactamases (ESBL) is increasing and of concern in hospitalized patients worldwide. The purpose of this study was to investigate the antibiotic susceptibility patterns of isolated bacteria from the bile specimens of patients with chronic and acute cholecystitis who had been operated by single-incision laparoscopic cholecystectomy (SILC) in Isfahan (Iran) using an antibiogram susceptibility test and molecular technique. The bile fluids of 91 patients were obtained from the Al-Zahra hospital and were cultured on specific media for the isolation of Gram-negative and positive bacteria and the disk diffusion test was done to determine the antibiotic susceptibility patterns of isolated bacteria. Finally, bacterial DNA was extracted from the bile samples and polymerase chain reaction (PCR) was performed to investigate extended-spectrum beta-lactamases genes. The bacteria Escherichia coli, Klebsiella pneumoniae, Proteus spp. and Staphylococcus aureus were detected in bile specimens cultured with high frequency, and the results showed that biliary infection increased with aging in patients with gallstone disease operated by SILC. The results showed a high frequency of ESBL genes including TEM, SHV, and CTX-M in isolated bacteria (especially Escherichia coli and Klebsiella spp.). Thus, evaluating the antibiotic susceptibility patterns and screening of ESBLs bacteria in patients with gallstones are essential. Prescribing suitable drugs, designing good strategies, and informing the medical community could decrease bile infection and antibiotic-resistant bacteria in clinical centers and hospitals

    Application of Bayes method in determining of the risk factors on the survival rate of gastric cancer patients

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    Introduction: Gastric cancer is one of the most common cancers in the world. The classical methodssuch as Cox regression and parametric models are used in most medical researches that their aims is thesurvival distribution survey, although the Bayes models have some advantages in compared with theclassical models. The present study was performed to analyze the survival rate of patients who had gastriccancer and were under treatment in the gastroenterology ward of Taleghani hospital, in Tehran usingBayes models. Weibull distribution was used for modeling in the study .Material and Methods: This study was a cohort study and performed in the gastroenterology ward ofTaleghani hospital by using gastric cancer patient's data from January 2003 to December 2007.178patients were enrolled to the study and their information was collected through telephone contacts. Thesurvival rate of patients were analyzed using Bayes Weibull models by considering variables such as ageof diagnosis, gender, tumor size, metastasis of other lymph. For determining of the risk factors on thesurvival of patients, was used Weibull model in the case that interval censoring. Data analysis was carriedout using Winbugs software and significant levels were considered 0.05 .Results: The results showed survival rate are dependent on the age of diagnosis and tumor size. Thosepatients who had early diagnosis, the rate of survival was greater. In addition, he patients who had smallertumor size, their survival rate was greater .Conclusion: Considering to classical models are based on normal approximation and applicable for bigsamples, Bayes methods are emphasized for small to medium samples. The results of this study showedthat the Bayesian Weibull model is a suitable model. This study also showed that age of diagnosis andtumor size of patients is important factors in regard to the survival rate of these patients. As a result, ifgastric cancer is diagnosed early, the relative risk of death would reduce

    NASAL ADMINISTRATION OF SILVER NANOPARTICLES AND SILVER IONS REDUCED COGNITIVE PERFORMANCE IN ADULT RATS

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    Background: Silver nanoparticles (AgNPs) have shown adverse effects and a toxic impact on human cell bodies. Passing the blood-brain barrier and increasing oxidative stress can change different parts of the brain such as the hippocampus. Therefore, the purpose of this investigation was to explore the possible neurotoxicity of AgNPs in adult rats. Method: Neurotoxicity was created in rats by treating them with 15 mg/kg NP3 and silver ions (AgAc) intra-nasally every two days for 20 days. The animals were divided into five groups: control, vehicle, NP3, NP15, and AgAc. Behavioral assessments such as Morris water maze and elevated plus maze, and assessment of biomarkers such as malondialdehyde assay were used to evaluate cognitive impairment and molecular changes induced by silver. Result: The results revealed that NP15 and AgAc significantly impaired spatial memory. Moreover, NP3, NP15, and AgAc increased anxiety in animals. Additionally, MDA was significantly increased by NP3 and NP15. Conclusion: The findings showed that AgNPs and AgAc, particularly NP15, result in neurotoxicity and behavioral impairments.                     Peer Review History: Received: 26 February 2023; Revised: 13 March; Accepted: 28 April 2023, Available online: 15 May 2023 Academic Editor: Dr. Nuray Arı, Ankara University, Turkiye, [email protected] Received file:                             Reviewer's Comments: Average Peer review marks at initial stage: 5.5/10 Average Peer review marks at publication stage: 7.0/10 Reviewers: Dr. Sally A. El-Zahaby, Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, King Salman International University, Egypt, [email protected] Dr. Robert Tungadi, State University of Gorontalo, Indonesia, [email protected]
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