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Showing 315 results for Shad
Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
Metaverse is a space that includes the real world and virtual worlds in which people use a digital and virtual representation called an avatar to be present. Metaverse is considered as the major media of commercial advertising in the future and it will play a fundamental role in terms of audience attraction and society awareness. By adopting semiotics approach, this research analyzes the preparation of the subject and the formation of the avatar in Metaverse commercials. Ten commercial advertisements of prominent brands are chosen as statistical sample, and the virtual world of Hyundai brand on Roblox is examined as the case study because of its diverse activities. Descriptive-analytical method is carried out relying on participatory observation, in a way that the researcher experiences the field, and seeks to answer two questions: 1) What kind of discourse is applied to Subject and Object interactions? 2) What is the procedure of conversion of real body to ideal body? Results show that Subject of Metaverse should be considered as a Being-actor who continuously finds itself in a lack of meaning due to Becoming-centered situation and is called to action and achieves meaning as a result of the action. Besides, the avatar could be considered as Ideal-otherness while the dialogue between physical and virtual body is possible through the third body, which is the Imaginary body, which is the main base of sensory-perceptual receptions and leads the actions of the subject.
Volume 0, Issue 0 (Articles accepted at the time of publication 2024)
Abstract
By studying the Qur'anic narratives, what is most visible is the amazing and elimination that includes a complete part of a story, even at a time. A pity that has been used not only in the Qur'anic stories, but also throughout the Qur'an as one of the highest literary and rhetorical manifestations of the Qur'an. This is one of the mechanisms and tools of the narrative or discourse silence process in which the signs of the narrative are eliminated and with their absence refers to the modules that the reader can rely on succession and companionship. And also from the intersection between the two and the use of brain capacity, fill those holes and gaps, thus fully view and receive the story. The important point in discourse silence is the interpretative and analytical aspect of narrative, and merely, such as the elimination of the classic rhetoric of the Nesith, which appeared in the form of metaphor, metaphor, permissible, and such equipment and to express aesthetics. In this article, we will first explain the silence of discourse in modern cognitive criticism, and then explain the narration of the life of Yusuf (AS) in the Holy Quran, based on the same validity and discourse. The result shows that discourse silence in this sura has been used in three types of structural, semantic and implicit, and with the systematic structure of the Qur'anic narrative structure, these vacuums are received and completed by the reader.
Volume 0, Issue 0 (ARTICLES IN PRESS 2024)
Abstract
Zeolites are recommended to utilize in agricultural sector due to their water holding and cation exchange capacity. Effect of zeolite on the hydraulic parameters of sandy loam soil was investigated and HYDRUS-2D was used to simulate the movement of water in the soil. Data needed were collected by conducting laboratory experiments. The studied treatments included four levels (zero, 5, 10, and 15 gr kg-1 of soil) to determine the effect of zeolite on hydraulic parameters including saturation moisture (θs) residual moisture (θr), shape parameter (n), point Check air permeability (α) and saturated hydraulic conductivity (Ks) of the soil. Four rounds of irrigation were done based on readily soil moisture and the soil moisture values before and after irrigation were measured using the Wet sensor in the depth and radial directions and recorded for 45 days. The initial value of hydraulic parameters including θs, θr, α, n and Ks were determined using Rosetta. Results showed that with increasing in the amount of zeolite, the parameters θs, θr and n increased and the value of α decreased, which indicated a decrease in the rate of water discharge from the soil. While the values of Ks tended to decrease. In fact, the mixing zeolite with soil causes to hold more water because of micro-pore structure of zeolites. The HYDRUS-2D model with the efficiency coefficient (EF), which shows the quality and how to fit the observed and estimated data, varied between 0.82 and 0.97, which shows the high efficiency of model in simulating humidity.
Volume 0, Issue 0 (Articles accepted for Publication 2024)
Abstract
Aim and Introduction
Achieving sustained and long-term economic growth necessitates the optimal allocation and utilization of resources at the national level. This goal relies heavily on the existence of efficient financial markets, particularly well-functioning and extensive capital markets. Numerous macroeconomic variables can influence the level of risk associated with shareholder rights, corporate cash flows, and adjusted discount rates. Additionally, changes in economic conditions can alter both the quantity and nature of investment opportunities.
However, establishing a fixed and consistent relationship between macroeconomic variables and stock price indices remains challenging. The complex and dynamic nature of financial markets makes it difficult to identify a method that accurately reflects economic conditions and captures the most critical influencing variables. Therefore, this study employs machine learning models to identify the key macroeconomic factors affecting stock price indices.
Methodology
Feature selection is one of the most common and crucial techniques in data preprocessing and serves as an essential component of machine learning. This study employs feature selection models to identify the most relevant predictors of the stock price index. The models utilized include the random forest method and regularized linear regression. To examine the nature of the relationships between variables, the jointness method was applied. Additionally, the mutual information analysis was conducted to assess the influence of key variables over different decades, enabling a deeper understanding of how the impact of macroeconomic factors on stock prices has evolved over time.
Findings
The study analyzed the impact of selected macroeconomic variables on stock price indices, focusing on the Tehran Stock Exchange. The findings from the Random Forest (RF) and Regularized Linear Regression (RLR) models indicate that exchange rates, financial development, inflation, economic growth, trade openness, and global uncertainty significantly influence Iran’s stock price index. The results demonstrate that global uncertainty, interest rates, and trade openness exert negative effects on stock prices, whereas the other variables positively influence stock prices.
The jointness method was employed to analyze the relationships between these variables, further confirming their significance. Moreover, the Mutual Information method was used to examine how the influence of these key variables varied across different decades.
Discussion and Conclusion
Among the variables examined, exchange rates, financial development, inflation, economic growth, trade openness, and global uncertainty emerged as the most significant factors influencing Iran’s stock price index. This finding is not surprising, given Iran’s historical experience with significant exchange rate fluctuations and persistent inflationary pressures. Global uncertainty has consistently influenced domestic markets in Iran due to political and economic instability. Previous research has highlighted the complex relationship between exchange rate fluctuations and stock price indices (Ratanapakorn & Sharma, 2007). Scholars have argued that the relationship between stock prices and exchange rates can significantly affect monetary and fiscal policy, as a recessionary stock market can reduce overall demand and impact broader economic performance.
Extensive research has also investigated the relationship between inflation and stock prices, identifying inflation as a significant factor affecting stock indices
(Boudoukh & Richardson, 1993; Fama & Schwert, 1977; Jaffe & Mandelker, 1976) . While some studies have reported a positive correlation between inflation and stock prices, others have found a negative relationship.
Moreover, trade openness has been recognized as a key factor influencing stock market fluctuations. Open economies are more vulnerable to external shocks due to increased global risk-sharing among markets. Although some studies have not found conclusive evidence of a direct effect between trade openness and stock prices, trade openness remains one of the influential factors (Nickmansh, 2016).
Stock prices reflect the present value of future cash flows, which are subject to two main effects: cash flow changes driven by increased production and interest rates, which serve as a discount factor. Stock prices tend to decline when expected cash flows decrease or interest rates rise. The level of actual economic activity directly influences cash flows, as higher economic activity generally leads to increased cash flow. Among the various indicators used to predict commodity markets, real Gross Domestic Product (GDP) is considered the most comprehensive measure of economic activity (Yuhasin, 2011; Christopher et al., 2006).
mouseout="msoCommentHide('_com_1')" onmouseover="msoCommentShow('_anchor_1','_com_1')">Finally, global uncertainty plays a significant role in shaping the internal economic environment of countries, making it an important global macroeconomic variable that influences the performance of publicly traded companies on the stock exchange.
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Volume 0, Issue 2 (8-2011)
Abstract
The term degradation is used to specify the status of the environment. It is often associated with ‘improper use’. ‘Use’ also implies environmental aspects other than physical ones and implies that the more intensive the use, the more susceptible the environment is to degradation, particularly if proper care for the environment is lacking. The question is, and has always been, how to map something which, apart from the physical aspects of landscape, is also influenced by socio-cultural and economic issues? The common approach in mapping degradation is based on indicators and the intention of this paper is to present three case studies: the Tabernas-Sorbas area in Spain; Iran (at the country level) and the Pico de Tancitaro area in Mexico. The geopedological map is combined with the land use-based map to produce the basis for the extraction of a considerable number of indicators.
Volume 1, Issue 1 (12-2010)
Abstract
Evaluation of Liver Enzymes’ Level in Blood Serum of Crystal Addicts Introduction: Crystal or dimetamphetamine is one of the harmful substances which are imported to Iran in the last few years. Crystal is made of pure heroin. Its harmful effects are more than heroin. Addiction to crystal can produce psychological and organ damage. In order to find out which part of body could be affected, examination of enzymes is useful. Liver is one of the organs which can be infected by drug abuse. Liver function test can be used to show these harmful effects. The aim of the present study is to exanimate of the effects of crystal abuse on liver enzymes such as Aspartat transaminase, Alanine transaminase and Alkaline phosphatase in crystal abusers. Materials & Methods: The current study is a case-control and cross-sectional study on 105 crystal addicted as case group who had referred to addiction treatment center for the first time and 100 healthy people as control group. The activity of enzymes was measured by callorimetery-spectrophotometry method. Results were analyzed by T-test exam and SPSS-16 software. Results: results show that using crystal increases the level of AST, ALT and ALP and there is a significant relationship between crystal abuse and the level of ALP (p=0.027). In addition, there is a significant relationship between duration of crystal use and the level of ALP (p<0.05). Conclusion: comparing with AST and ALT levels, ALP level is more affected by crystal abuse.
Volume 1, Issue 1 (2-2016)
Abstract
Background: Various studies have reported the prevalence of low back pain in specific populations very differently. The aim of the present study was to determine the prevalence of low back pain and related factors among the referees to health centers in Dehloran, Iran. Material and methods: In this cross sectional study, two hundred and seventy three referees to health centers in Dehloran, who aged between 20 to 45 years old and were satisfied to be studied, were entered to the study after providing signed written consent form. The data were collected using the valid/reliable researcher -made questionnaire. The validity of the questionnaire has been obtained by inserting the experts' views in the questionnaire and the reliability was measured through cronbach's alpha which was calculated as 78%. The data has been analyzed using SPSS16. Results: The lifetime prevalence of low back pain among the studied participants was 52.38%. There were significant relationship between low back pain and education level, residency location, hours per day working with computer and sedentary life style. (All p value was < 0.05). Conclusion: This study showed low back pain was prevalent among referees to health centers aged between 20 to 45 years old. Sedentary life style and much working with computer were related significant factors. Designing proper intervention to prevent low back pain among this target group is recommended.
Volume 1, Issue 1 (Winter 2018)
Abstract
Aims: The assessment of threats and vulnerabilities of critical infrastructure such as urban water infrastructure can, in many cases, significantly reduce vulnerabilities or minimize the consequences of a threat. The aim of this research was to evaluate the components of the contingency and impact severity of human-oriented and natural-based threats in urban water infrastructure.
Instrument and Methods: In this analytical-descriptive study, a library collection method, including the study of books, research, and domestic and International articles of researchers as well as Internet search was used. The data were collected by questionnaire and analyzed by Hazop model and Friedman test, using SPSS 21 software.
Findings: According to the experts, the highest scores were assigned to terrorism acts and suppression, and, ultimately, human error. The most critical type of threat was recognized as chemical attack, military attack, and drought by the Hazop model. The second threat was rocket attacks, earthquakes, and terrorism. The human error ranked next in critical threats. The military attack and drought were recognized as an unacceptable crisis and the probability of a flood, a military attack (ground) and human error were ranked one to three. The impact severity (damage) of the military attack (ground), earthquake, and chemical pollution were ranked one to three, respectively.
Conclusion: The most critical types of threats are chemical pollution in urban water infrastructure, military attack, and drought and are recognized as unacceptable crisis. The probability of flood, military attack (ground), and human error are ranked one to three, and the impact severity (damage) of the military attack (ground), earthquake, and chemical pollution are ranked one to three, respectively.
Volume 1, Issue 2 (6-2013)
Abstract
Global warming is claimed to be the cause of climate change, which is often held responsible for water shortage. Let geopedology represents the complex process of soil formation, out of which much can be learnt about paleoecology; soil formation being a dynamic interaction between the atmosphere, biosphere, lithosphere, and the hydrosphere. In a multidisciplinary sustainability-oriented study in northwestern Iran, geopedologic data were analyzed and cross-referenced with some historic and archaeological information to reconstruct paleoecologic conditions in several time periods, through which the changes both in climate since upper Pleistocene, and in landuse and their consequences in terms of land degradation could be concluded. The occurrence of a (sub-) surface layer of travertine, dated 27,000 y BP that is coated by a thin organic layer with traces of rancienite (mineral), dated 13,000 y BP, implies a humid environment, corresponding with the pluvial uppermost Würm. The geopedologic survey, supported by soil micromorphology, revealed that between 6,000 and 2,600 years ago the area was subject to cycles of erosion and sedimentation that have led to glacis formation. A type of climate that is characterized by the alternation of wet and dry periods is also supported by the occurrence of Petrocalcic and Argillic horizons in the soils. Cultivating rice, tobacco and cotton, which was practiced until over a century ago, also implies relatively wetter conditions. The study concludes that aridification has never been as degrading as it is today, due to the over-exploiting of the non-renewable fossil groundwater.
Volume 1, Issue 2 (6-2016)
Abstract
Background: Musculoskeletal disorders (MSDs) represent one of the most common occupational health education problems in both developed and developing countries. The aim of this study was to assess the effect of an occupational ergonomic training educational programon awareness, attitude and work-related musculoskeletal disorders behavior among Office Workers.
Methods and Materials: Firstly,200 office workers from 12 health centerswere recruited. Withresponse rate of 90%, 180 eligible participants, were assigned to receive an 8-week participatory ergonomic occupational training educational program available in Shemiranat, Tehran, Iran. A self-controlled longitudinal study with pre/post design was used to evaluate the effects of the intervention among office workers in 2015-2016. Post-test was then administered to the participants to identify changes at 3 months after intervention.
Results: Totally, 200 participants with a mean age of 37.48 ± 8.78 years old completed this study. The 3-month follow-up rate was 90%. After the intervention, the awareness rate, attitude and MSDs work-related health behaviors were improved. The self-reported prevalence of work-related musculoskeletal disorders for neck, shoulder, upper and lower back pain or discomfort were significantly lower than before intervention (P < 0.05).
Conclusions: The MSDs work related behaviors as well as MSDs prevalence can be improved through the health education program. It is recommended that further research with larger sample and longer follow up be conducted to confirm the findings of this study.
Volume 1, Issue 2 (Spring 2023)
Abstract
In this study, a planetary ball mill was used for mechanical activation of phosphate concentrate by dry milling in argon atmosphere. To investigate the structural changes of fluorapatite, amorphization degree, crystallite size, micro-strain, particles size, specific surface area changes and new phase formation were investigated. The crystallite size and micro-strain were estimated using Williamson-Hall method. To investigate the influence of effective parameters on mechanical activation, the ball to powder ratio of 20:1 and 40:1 with two types of balls of 9.4 and 20 mm and speeds of 200 and 500 rpm was used. The results showed that agglomeration of particles occur at higher intensities of mechanical activation, but no phase change occurs during high intensity ball milling. The most variations in crystallite size, micro-strain, surface area, amorphization degree and XRD line broadening were for samples that were activated by smaller balls for longer time. The results of the Williamson-Hall plots showed that the maximum effect of mechanical activation on phosphate concentrate was in the first 20 minutes with small balls and the crystallite size, micro-strain and amorphization degree was changed from 225 nm, 0.09% and 0% for initial sample to 64.29 nm, 0.9% and 80.081% for mechanically activated sample, respectively. Also the results showed that changes in cell parameter at c direction had larger effect on unit cell volume. The maximum unit cell volume variations were corresponding to mechanically activated sample with 9.4 mm balls that changed from 525.4 (A3) for initial sample to 528 (A3) for activated one after 90 min.
Volume 1, Issue 3 (9-2013)
Abstract
Around 80% of the population relies on agriculture, rice being the staple food. Topography urges farmers to cultivate upland rice. The Chinese interest in rubber latex has stimulated farmers to grow rubber, although the technical knowledge regarding tree management and latex processing is poor. A study was conducted in an area in Luang Prabang province to examine the suitability of upland rice and rubber. The major objective was to make a comparison within and between three suitability evaluation methods, two of which are expert-driven whereas the third one was executed by a group of farmers. For the fuzzy model different membership values were set and weighed using the Analytic Hierarchy Process (AHP) technique. According to the Boolean classification 88% of the study area is suitable for upland rice, and 85% is suitable for rubber. The fuzzy method yielded 89% suitable for upland rice and 88% suitable for rubber. Farmers came up with 37% suitable for upland rice and 14% suitable for rubber. Comparison is made between the different methods. A reasonable agreement between farmers’ suitability maps and the expert-based methods is obtained for the upland rice than for the rubber-based land utilization type (LUT). This can be attributed to the lack of know-how on the latter.
Volume 1, Issue 3 (9-2016)
Abstract
Background: The concept of self efficacy and physical self-concept have been shown to be an effective predictor of behavior in many areas of health. This study investigated the relationships between foot-care self-efficacy beliefs, Physical self-concept, self-reported foot-care behavior in people with diabetes.
Methods and Material: This is a cross sectional study in which the 90 diabetic individuals who had been admitted to the diabetic clinic of health centers located in Mashhad- Iran between the years 2015 and 2016 was invited to be entered into the study. The demographic questionnaire and the self-report "Foot Care Confidence Scale" (FCCS) questionnaire and also the self-report Marsh “Physical Self-Description Questionnaire” (PSDQ) were applied to measure data. SPSS 20.0 was used for the analyses.
Results: Ninety patients with a mean age of 51.82 ± 11.3 years were assessed. There is the significant association between foot-care self-efficacy beliefs and higher foot care behavior. (r = 0.4, P < 0.05). Also, there was a significant association between physical self-concept and foot-care, so that people who had a better physical self-concept had better foot care behavior.
Conclusions: This study has found that foot-care self-efficacy beliefs and physical self-concept improvement could help foot-care behavior improvement among diabetic people.
Volume 1, Issue 4 (12-2013)
Abstract
An 84-day feeding trial was carried out onfingerling (4.44 ± 0.06 g) rainbow trout (Oncorhynchusmykiss, Walbaum, 1792) to evaluate the effect of dietary supplementation with a commercial prebiotic GroBiotic®-A (G-A) on the growth, feed efficiency, haematology and immunlogical parameters. Ttreatments containing various inclusions of G-A (0 %, 0.5 %, 1.0 %, 1.5 %, 2.0 %, 2.5 %, and 3.0 %) were added to a commercial fish dietand were fed twice daily at 2-6 % of body weight. The highest weight gain (WG), specific growth rate (SGR) and average daily gain (ADG) were obtained in fish fed the diet containing 2.5 % G-A followed by 3.0 % inclusion (P<0.05). The highest feed efficiency (FE), protein efficiency ratio (PER) and net protein utilization (NPU) were also recorded in the 2.5 % G-A inclusion (P<0.05). Survival was significantly higher (P<0.05) in fish fed with 2 % and 2.5 % G-Asupplement (P<0.05). Although higher Hb, haematocrit, RBC, WBC, MCH, MCHC, MCV, lymphocytes, and neutrophils were observed at all G-A supplemented diets, the differences among themwerenot significant (P>0.05). On the other hand,significantly higher differencee (P<0.05) in lysozyme and immunoglobulin (IgM) concentrations wereobserved in 2.5% G-A inclusion. The results of this study indicated that 2.5 % G-A inclusionhad a better performance on growth and haematoimmunological parameters in rainbow trout fingerling.
Volume 1, Issue 4 (10-2016)
Abstract
Background: In addition to individual problems and conditions, low back pain reduces working capacity, resulting in the waste of time and absence from the work, and increases healthcare costs and economic losses. This study aimed to determine the prevalence rate of low back pain and its relationship to demographic factors, body mass index, and education in ergonomic principles in rural men.
Methods and Materials: This study was a cross-sectional descriptive study. Study population was consisted of 215 men from the village of AqQala city. Data collection tool was Nordic questionnaire. Data were analysis using SPSS software version 19 and chi-square test and descriptive statistics.
Results: About 54.88% of the patients (67.82% workers and 40% farmers) during the last year have been experiencing discomfort in the lower back. χ2 statistics analysis showed a significant relationship between low back pain and occupation, BMI, age, and education in ergonomic principles (P˂.05). There was no relationship between low back pain and level of education (P = .085). Only 13% of the participants were trained in ergonomic principles.
Conclusions: Considering the high prevalence rate of low back pain as well as significant relationship between BMI and education in ergonomic principles with back pain, the need is felt for training of these people in how to lose weight, how to implement ergonomic principles in laboringand agricultural activities and carrying heavy objects, how to avoid bad work situations, how to maintain and care for the waist, how to perform simple exercises for strengthening and flexibility of lower back muscles.
Volume 1, Issue 4 (Fall 2023)
Abstract
Today, carbon dioxide emission is one of the concerns of all countries in the world, so in this paper, we examine the effect of export quality, energy efficiency, and economic complexity on CO2 emissions per capita during the period of 1990 to 2014 in emerging economies. For this purpose, first, energy efficiency is calculated using mathematical programming methods (DEA). Then, the effect of export quality, energy efficiency, and economic complexity on per capita carbon dioxide emissions in the panel of emerging economies is investigated using panel quantile regression. The energy efficiency results show that the average energy efficiency of the studied countries had been increasing from 1990 to 2014. The lowest efficiency score among the studied countries is related to China. The results of quantile regression indicate that the export quality and consumption per capita of fossil fuels have a positive and significant effect on CO2 emissions per capita in all quantiles. The results also show that the coefficient increases by moving in the level of quantiles, so that, the highest effect coefficient of export quality on CO2 emission is related to the quantile 90th and about 0.874. Energy efficiency has a negative and significant effect in all quantiles except 90th, and the highest coefficient of influence (0.133) is related to quantile 10th. The increase in economic complexity increases the co2 emissions in all quantiles except 10th, and the highest coefficient (about 0.487) is related to quantile 90th.
Volume 2, Issue 1 (9-2011)
Abstract
Lipase is used in the production of detergents, cosmetics, pharmaceuticals, flavour enhancers and foods. The lipase of yeast Yarrowia lipolytica can be used for production of important class of chemical intermediates in the pharmaceutical industry. Lipase production depends on media composition and environmental conditions. Y. lipolytica DSM 3286 strain was cultured on media containing different organic and inorganic nitrogen sources. Lipase production was investigated by measuring biomass and lipase activity was detected by ρ-nitrophenyl laurate (PNPL) spectrophotometric assay method at various times within a period of 7 days. In this study, the effect of different nitrogen sources was investigated on Y. lipolytica DSM 3286 lipase production. The maximal lipase production (34.7 U/ml after 48 h) was detected in medium containing yeast extract as nitrogen source. The optimum temperature and pH of the enzyme activity were 37 °C and 7, respectively. The final goal of this study is to develop and optimize lipase production by Y. lipolytica for use in pharmaceutical industry.
Volume 2, Issue 1 (Spring 2018)
Abstract
Electronic wastes are known as the most important solid wastes in 21th century. They are producing two or three time faster than other solid waste streams. Many researchers studied bioleaching of e-wastes using Acidithiobacillus ferrooxidans. The presence of alkaline metals cause e-wastes show an alkalinity nature. By adding e-wastes to the environment the pH of solution increases sensibly. Many researchers supposed the optimal pH range of A. ferrooxidans which is 1.5-2.5 as the optimal pH range to reach maximum recovery. So in the bioleaching process by daily pH adjusting in the range and using sensible amount of sulfuric acid, control the pH of solution about 2. In this research two same experiments, just the pH of one of them was adjusted daily, were done. In both experiments the environmental situation including pulp density of 15 g/l, inoculum 10% (v/v), the temperature of 30ºC, and shaking rate of 130 rpm was the same. For 25 days Cu recovery, bacterial count, pH, and Eh were examined. The results showed the maximum Cu recovery at the sample without pH adjusting was about 100% but at the sample with pH adjusting recovery was reduced to 90%. The bacterial count diagram showed the bacterium is well active in both experiments. To maximize recovery, reducing acid consumption, and increasing process economy there is no need to adjust the pH of solution.
Volume 2, Issue 1 (Spring 2018)
Abstract
Aim: Most scientists are trying to treat cancer, and in this regard were produced numerous anticancer drugs, that adverse effects on non-target tissue. To overcome this, drugs freight to magnetic nanoparticles Chitosan and its carboxymethyl secondary coumpands are biopolymers that are non-toxic, biodegradable therefore found applications in biomedical field. We explain here that glycerol monooleate covered magnetic nanoparticles (GMO-MNPs) capable of transporting hydrophobic anticancer drugs. Method: In the present study, we have expanded 5-fluorouracil (5-FU) that loaded on chitosan MNPs for targeted cancer therapy. Results: The modified nano-adsorbent was then characterized by Fourier Infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), elemental analysis of CHN (9) and thermal weighing analysis (TGA). Lab conditions such as pH, contact time were optimized. To analyze the structure of the sample, X-ray diffraction spectroscopy was used to investigate the magnetic properties of the nanosized particles synthesized by the magnetometer and to detect the phase type formed on the monolayer glycerol matrix network using a polarizing light microscope. Also, the study showed essential oil release in the external environment of 90% for 30 hours. Conclusion: The optimized magnetic nanoparticles according to SEM image, exhibited segregated nanoparticles with sub-spherical smooth morphology and also the high thermal stability of 5-Fluorouracil nanoparticles which indicated a well-established structure of nanoparticles.
Volume 2, Issue 1 (7-2021)
Abstract
Aims: The lands of Abbas Abad have a special place and position in the city of Tehran, and for this reason, during the last half century, it has always been considered by decision makers, planners, planners and urban designers. The urban plans presented for these lands, in addition to the design-spatial aspects, contain special ideological dimensions that may not be obvious at first glance. Understanding and explaining these dimensions is the main purpose of this forthcoming article.
Methods: In order to better understand these two aspects, the method of discourse analysis is used. Accordingly, relying on a structuralist approach based on linguistic teachings in the face of existing documents, the two parts of intra-lingual and extra-lingual factors are opposed to each other.
Results: Based on the methodological approach of the article, on the one hand, intralingual factors include design-spatial aspects of the design and on the other hand, extralinguistic factors related to its ideological aspects. Accordingly, it is shown that the existing ideas in the design-spatial dimensions of each of the proposed plans are an attempt to realize a part of the ideological dimension of this plan; Which, ironically, can be seen in their first perspectives.
Conclusion: Despite the formal differences in the spatial dimensions of urban plans of Abbas Abad lands in the two time periods considered in the article, each of these plans has a specific and unique ideological logic. Follows himself; Which is clearly tied to the initial perspectives of the designs.