30 research outputs found
Ramadan Fasting in SARS-CoV-2 (COVID-19) Pandemic
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Health Scope. 2020 August; 9(3):e105045.
Published online 2020 August 26.
doi: 10.5812/jhealthscope.105045.
Letter
Ramadan Fasting in SARS-CoV-2 (COVID-19) Pandemic
Mojtaba Akbari 1, Arefe Khaksar Jalali 2, Hossein Ansari 3 and Noureddin Soltanian 1, *
1 Isfahan Endocrine and Metabolism Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
2 Faculty of Medical Sciences and Technologies, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 Department of Epidemiology and Biostatistics, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
* Corresponding author: Isfahan Endocrine and Metabolism Research Center, Isfahan University of Medical Sciences, Isfahan, Iran. Email: [email protected]
Received 2020 May 25; Revised 2020 June 16; Accepted 2020 June 24.
Keywords: Ramadan Fasting, SARS-CoV-2, Pandemic
Dear Editor,
Millions of Muslims live all over the world who fast
during Ramadan every year. Various studies have been
conducted on the impact of Ramadan fasting on different
body organs reporting its positive results on health, such
as a decrease in serum cholesterol and triglyceride and fa-
vorable impacts on the immune system (1).
Severe acute respiratory syndrome (SARS) coron-
avirus 2 (SARS-CoV-2) that caused coronavirus disease 2019
(COVID-19) outbreak has been a global concern from late
2019 due to its fast transmission and high pathologic
effects (2).
Owing to the beginning of Ramadan during the COVID-
19 pandemic, Muslims may worry whether the fasting in-
creases the risk of coronavirus infection.
People can be categorized into two groups based on
their health status (Figure 1). The first group consists of
people suffering from a disease such as malnutrition and
kidney disease. This group should not fast, according to
the Islamic rules, since fasting can negatively affect their
health condition. The second group is healthy people who
can be divided into two subcategories, including healthy
people who follow self-isolation and those who cannot
obey self-isolation rules and are forced to leave home for
work or other requisite activities
Introduction and analysis of the account version of the work of Mir Mohammad Ghasem Asir Varamini
No full textScientific works constitute an important part of the collection of historical writings of Iran. Mathematical and arithmetic sciences have been among the sciences of interest to Iranian scientists. Examining mathematical manuscripts and arithmetic and geometry in terms of identifying the history of science, using their contents to establish new knowledge, as well as finding out the literary and linguistic features of the period in which it was written. Are of particular importance. Therefore, reviewing and correcting such manuscripts, even if they are not in the category of literary and scientific works, can be a priority for researchers and proofreaders active in this field. The treatise on arithmetic is one of the ninth and tenth century writings in the field of mathematics, arithmetic and geometry. The author of this work is Mir Mohammad Ghasem Asir Varamini (Isfahani). This book was written in Baghdad and the author is the same author. The date of its writing, according to the author and its scribe, dates back to 900 AH. This work consists of an introduction and a conclusion, as well as three articles, each of which is divided into different chapters. In this research, the most important features of the thesis book are written along with the introduction of its manuscript and finally the version is examined from a content point of view
بررسی اثر مکمل شستشوی فوق لثه ای بر سلامت پریودنشیوم در بیماران دچار شکستگیهای فکی و دنتوآلوئولار متعاقب درمان آرچبار و سیمبندیهای دور دندان
No full textEvaluation of Complementary Supragingival Irrigation on the Periodontail Health in the Management of Jaw and Dentoalveolar Fractures Using Arch Bar and Dentoalveolar Wiring
No full textContent study and correction of the treatise Shoaa (Arc and Ghaz) by Khajeh Nasir al-Din Tusi
No full textRevival of manuscripts is a useful way to understand the cultural, literary and historical heritage of any ethnic group. Therefore, the transfer of the works of the past in a correct way and without interference is one of the cultural necessities of any society. The treatise of Shoaa (Arc and Fury) is one of the scientific treatises of Khajeh Nasir al-Din Tusi, which is very brief and in Persian. The subject of this treatise is how to form a ray of light on polished objects by irradiating light from a radiant body. This research, while explaining the content of the version, examines the structure and thought as well as correcting the version. The present research method is content analysis and library based on the principle of the work and the evidence extracted from it. The method of text correction is also intermediate correction. During the correction, an attempt was made to record from the relative basic version, and wherever the recording of another version was more correct than the relative basic version; Has been used. Differences of abrogation are mentioned in a footnote
Impact of Tunnel Temperature Variations on Surrounding Rocks in Cold Regions
No full textTemperature is an important factor in designing and maintaining tunnels, especially in cold regions. We present three-dimensional numerical simulations of tunnel temperature fields at different temperature conditions. We study the tunnel temperature field in two different conditions with relatively low and high ambient temperatures representing winter and summer of northeast China. We specifically study how these temperature conditions affect tunnel temperature and its migration to surrounding rocks. We show how placing an insulation layer could affect the temperature distribution within and around tunnels. Our results show that the temperature field without using an insulation layer is closer to the air temperature in the tunnel, and that the insulation layer has shielding effects and could plays an important role in preventing temperature migration to surrounding rocks. We further analyzed how thermal conductivity and thickness of insulation layer control the temperature distribution. The thermal conductivity and thickness of insulation layer only affect the temperature of the surrounding rocks which are located at distances below ~20 m from the lining
Phytochemical composition, and cytotoxic, antioxidant, and antibacterial activity of the essential oil and methanol extract of Semenovia suffruticosa
No full textObjective: In this study, our aim was to extract, and identify and quantify the chemical composition of essential oils of Semenovia suffruticosa grown in Kerman, Iran. Moreover, cytotoxic, antioxidant and antimicrobial activity of the essential oil and methanol extract of aerial parts of S. suffruticosa were reported. Materials and Methods: GC and GC/MS analysis were used for identifying and quantifying the essential oil components. Antioxidant and antibacterial activity were tested by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and agar disc diffusion methods, respectively and MTT assay was used to determine the anti-proliferative potential of the oil against breast (MCF-7), colon (HT-29), neuroblastoma (SH-SY5Y), embryonal carcinoma (NCCIT) cancer cell relative to human umbilical vein endothelial cell (HUVEC) as a normal cell. Apoptosis induction was monitored by flow cytometry using PE annexin V apoptosis detection kit and cell cycle arrest was by with propidium iodide. Results: Z-β-ocimene (25.1%), linalool (17.8%) and β-bisabolol (13.3%) were recognized as major components of the essential oil. Our study demonstrated apoptosis-inducing potential of essential oil on normal and cancer cells. However, methanol extract exerted cytotoxicity against a number of cancer cells and arrested cancer cells in G2/M phase; nevertheless, it did not exert strong cytotoxicity against normal cells. Furthermore, DPPH and disc diffusion results showed that while essential oil has considerable antiradical activity, methanol extract did not exert promising antioxidant and antimicrobial activity. Conclusion: Methanol extract of S. suffruticosa shows tumor-cell-specific cytotoxic properties and the essential oil demonstrated a strong antioxidant activity
Evaluation of the Quality of Occupational Health and Safety Management Systems Based on Key Performance Indicators in Certified Organizations
No full textAbstractBackgroundOccupational Health and Safety Management Systems are becoming more widespread in organizations. Consequently, their effectiveness has become a core topic for researchers. This paper evaluates the performance of the Occupational Health and Safety Assessment Series 18001 specification in certified companies in Iran.MethodsThe evaluation is based on a comparison of specific criteria and indictors related to occupational health and safety management practices in three certified and three noncertified companies.ResultsFindings indicate that the performance of certified companies with respect to occupational health and safety management practices is significantly better than that of noncertified companies.ConclusionOccupational Health and Safety Assessment Series 18001-certified companies have a better level of occupational health and safety; this supports the argument that Occupational Health and Safety Management Systems play an important strategic role in health and safety in the workplace
Design of optimum recursive digital filters with double zeros on the unit circle leading to symmetric ladder wave digital filter structures
No full textA class of odd-order low-pass recursive digital filters leading to symmetric ladder wave digital (LWD) filter implementations is introduced. In the pass-band, these filters have the same equiripple performance as elliptic filters of the same order, whereas in the stop-band there are the maximum numbers of double zeros. This implies that if the odd filter order is 2M+1, then, in addition to a single zero at z = 1, the proposed filter has M/2 complex-conjugate double zero pairs [(M-1)/2 double and one single complex-conjugate zero pair] on the unit circle for M even [odd]. By slightly modifying an algorithm proposed earlier by the second author, a very fast iterative technique is developed for designing these filters to exhibit also an equiripple stop-band performance. When implemented using LWD filter structures, the proposed filters have the following two benefits compared to elliptic filters. First, the resulting structure becomes symmetric, which reduces the number of distinct multipliers by a factor of two. Second, the maximum amplitude value remains to be unity as well as the two outputs of the LWD structure remain power complementary also after quantizing the coefficient values (without additional scaling operations being needed when implementing elliptic filters.) Examples are included illustrating that the price to be paid for these attractive properties is only a 3- to 5-dB reduction in the stop-band attenuation.</p
Fractional anisotropy-weighted front evolution algorithm for white matter tractography based on diffusion tensor imaging data
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