Search published articles


Showing 110 results for Bahani


Volume 2, Issue 1 (3-2014)
Abstract

Aim: Regarding the high prevalence of breast cancer among the Iranian women and lack of attention to mammography screening, planning the behavior promotion interventions would be practicable through determining the barriers of conducting mammography screening behavior. The purpose of this study was determining the barriers of conducting breast cancer mammography screening among the women over 40 years. Methods: The participants of this crass-sectional study consisted of 294 over 40-years old women in Arak-Iran who completed the questionnaire of mammography barriers. The questionnaire used was based on Champion's revised Health Belief Model Scale (CHBMS). Sampling was based on the population. All hygiene officers of the Health and Cure Centers of Arak were asked to randomly select some samples among the women over 40 years. In this way, all the city's areas were covered. Inclusion criteria were women over 40 years, not already suffering from breast cancer, or having a family member (mother or sister) affected by the disease. Findings: The findings revealed that the high cost is the main barrier (20.1%) of mammography screening among the population. Among the other reasons, one may point to fear of discovering a cancer mass (9.5%), painful procedures of mammography (7.1%), not knowing the mammography centers (6.5%), and shame of undressing for mammography (5.1%). Comparing the mean scores of the barriers based on the individual characteristics showed that the barriers of mammography screening according to education level (p=0.0001), insurance status (p=0.02), and economic status (p=0.0001) have significant difference. Conclusions: Regarding the barriers of mammography screening among the Iranian women, it is necessary that authorities apply solutions to reduce costs, and promote women's knowledge about the importance of early diagnosis of breast diseases through screening plans, especially mammography screening.

Volume 2, Issue 4 (winter 2021)
Abstract

Aims: This research deals with the delicacies and complexities of recreating the historical cemeteries of cities. In this regard, it tries to know the obvious, hidden dimensions, layers and components in the deep levels of perception by reviewing lived experiences.
Methods: This research is qualitative and has a phenomenological approach. In this way, in-depth semi-structured interviews were conducted in Kusenbach's innovative method and in five axes, and also supplementary questionnaires were distributed to record, receive and analyze the meanings of the lived experiences of the landscape visitors.
Findings: The lived experiences of historical landscape cemeteries were studied in five axes: "Reference, ideal image, activity, improvement and mental dimensions" and showed that historical cemeteries have multidimensional qualities and a great variety, multiplicity and complexity in the perceptual layers.
Conclusion: If the role of the cemetery is reduced to the necessary urban infrastructure and becomes only a place for burying the bodies, then the connection between the world of the living and the dead is cut off, and turning it into a landfill for urban waste outside the city. Because of having valuable structures and elements, originality and hidden values that show the interaction of culture and nature over time, and these values preserve the identity and collective memories and historical memory of society, the protection of the historical landscape is very sensitive. Therefore, it is impossible to re-read these features in the re-creation of the cemetery without analyzing the deep perceptual layers hidden in the soul of this place.

Volume 4, Issue 1 (4-2014)
Abstract

Sheykh Shahāb ad-Dīn Suhrawardī, as one of the great Moslem philosophers and theologian, founded his philosophy upon the doctrine of Illuminationism. His theories and teachings have deeply influenced the beliefs and performances of the Iranian artists. In view of this, the present research aims at investigating Suhravardī’s understanding of Illuminationism and hierarchy of lights. It also tries to trace manifestations of the khorrah light (or the Divine Light), which was of utmost significance in Suhravardī’s doctrine of Illuminationism, in the art of architecture. Finally, it is tried to answer the question “Which elements signify the manifestation of the Light - as conceived of in the Illuminationist Philosophy – in the Iranian-Islamic architecture?” Sheykh of Ishrāq [Suhrawardī] called God ‘the Light of All Lights’ [Nūr-ul-Anwār] and believed that the heaven and earth are made of God’s light; and all beings enjoy His light in proportion to their closeness to His light. He also believed that the light as existing at the stages of sense and matter is inferior to the light that exists in the more exalted stages. That is to say, the closer one gets to the Source of Light - ‘the Light of All Lights’ [Nūr-ul-Anwār] – the purer and brighter the light they get will be. Therefore, separation from the matter translates into moving and getting elevated toward the Source of Being and the Light of Existence and avoiding the lowest levels of existence and shadows. Furthermore, there is an eternal tie between art and philosophy/wisdom. The reason is that they are both perceived intuitively and expressed enigmatically. Therefore, it is through meditation and self-discipline that an artist may attain at that angel-like insight, which is the source of all celestial arts. Such works of arts are the fruits of an artist’s quest in the spiritual world and intuitive perception of the truths there. Like the Divine Knowledge and the doctrine of Illuminationism, the traditional art is expressed in the language of enigma, the very characteristic feature that enables it to establish an association between the most far-fetched inward concepts and the most superficial level of the existence in the outward world. From the above perspective, light is considered the symbol of existence in the sphere of the Islamic Architecture; and due to the fact that the mosque, regarded as the heart of the Islamic Architecture, is where all the secrets and mysteries of this architecture is manifested, the present article deals with the symbols of light in the architecture of mosques. The doctrine of Illuminationism propagated by Suhrawardī and other Illuminationist philosophers has influenced the Iranian culture and art (particularly, during the Timurid and Safavid rules, when Sheykh ‘s ideas were in their heyday). As one can obviously see in their works, Iranian architects had a spiritual approach toward light, like the Illuminationist philosophers of their homeland did. Manifestation of the Divine Light in the form of words of Azān [the Call for Prayers] from minarets, provision of light through envisaging lamps in the epicenter of mihrabs (i.e., the mishkāt), installation of Koranic tablets containing verses from the Nūr Chapter, and the arch-shaped mihrabs and the muqarnases therein…, they all appear to be the incarnation of lights, which symbolize the stage on which the Divine Lights shine. Application of ‘shamsehs’, the arrangement of skylights on the domes, the muqarnases that absorb the light and diffuse it delicately, the latticed windows that let pass the light, the reflection of the light in the bright enameled tiles, continuous vaults, and the colorful glasses, which signify the unity in diversity with their harmonious colors functioning as a medium of transmitting the light, and presence of yellow and gold colors symbolizing the Light of All Lights [Nūr-ul-Anwār] in the terrestrial world…, they all substantiate the fact that the Iranian architects had an Illuniationist viewpoint and practiced under the influence of that doctrine Because the Iranian Architecture is all about light and illumination. The survival of everything hinges upon light. For the purpose of this research, data and information were collected through documentation, the research was conducted on a descriptive basis, and the analysis was made in an analytical fashion. Based on the results obtained, no symbol or manifestation compares to the light in terms of its affinity and propinquity with the Divine Unity. For the same reason, the Muslim Iranian architects have tried their best to use light in whatever they created. Elements like the minarets, mihrabs, muqarnas [corbels], tiles, continuous vaults, colorful glass, and conspicuous presence of yellow and gold colors are all symbols of the Light of All Lights [Nūr-ul-Anwār]. In like manner, the concept of ‘Khorrah’ or the Divine Light has manifested itself in architecture through ‘Shamseh’ and application of latticed surfaces like luminous halos under the domes in the Iranian-Islamic architecture. Therefore, the role of light in the Islamic architecture is to symbolize the Principle of [divine] Manifestation. The utmost function of the elements applied in the architecture is manifestation of God; that is, ‘the Light, and the manifestation of the Ubiquitous Light of the firmaments and the earth, that is, the Only True Being. That is why the Iranian architects would try their best to use the element of light in whatever they created. One of the fundamental notions in Iranian’s Doctrine of Illuminationism on which Suhrawardī placed primary emphasis, is the notion of ‘Khorrah’. ‘Khorrah’ signifies observation of the Divine Lights by the spiritual wayfarers [sālek] in course of their spiritual journey. In the traditional art of Persian miniature, khorrah was is delineated as a halo around the heads of the characters. In architecture, the same has been demonstrated in the form of ‘Shamseh’. The circular layout of the skylights under the domes and the way light enters through the latticed windows clearly conjure up the image of a luminary halo in an emphatic mode. Manifestation of the khorrah light in the form of shamsehs and the skylights of the mosque domes can be regarded as another significant finding of this study.

Volume 6, Issue 4 (Fall 2018)
Abstract

Introduction: Soil water repellency was first reported in the first half of the 20th century for peat soils. Depending on the severity of water repellency, a water repellent soil will resist water penetration during seconds to hours or even days. This has detrimental effects on surface and subsurface flow processes such as increased runoff, erosion, and preferential flow. The present study was conducted with the aim of investigating the effects of Soil water repellency on hydrological and erosion processes in order to identify gaps in the existing investigations.
Conclusion: Major survey gaps remained, including the dissociation of the symptoms of water repellency on soil erosion such as the existence of a soil crust and little knowledge of the temporal patterns of water repellency and their hydrological outcomes. Understanding the mechanisms of water repellency is relevant to the separation of different causal chains as well as the adjust runoff coefficients in different water repellency areas. Soil water repellency can be caused by a variety of compounds and processes and generally occurs after a period of drying weather. Under such conditions, the soil can change from a wettable to a water-repellent state when dried below its critical soil water content. Soil water repellency is found to occur in different soils worldwide, ranging from coarse to fine-textured. Water repellency in soils can result in losses of plant-available water, reduced agricultural crop production, and deterioration of turf quality on sports fields.


Volume 7, Issue 27 (9-2019)
Abstract

 
  • Each nation has its origins in the manifestation of the beliefs and customs of its people. Literature is the mirror par excellence of each nation's past. The history of each nation or people is not discontinuous and, if a message of a text of folk literature is related to its historical realities, it will always be transmitted over time to the following periods and will be periodically reconstructed. One Thousand and One Nights- the prototype of world’s tale- has been always a remarkable source in folk literature. Throughout the history and over time, these stories have been emerged under diverse meanings and shapes. Farīd ud-Dīn Attār, the mystic poet- has taken the advantages of folk literature in order to express mystic thoughts. The existence of common signs and points as well as formal and content aspects of these tales show the inter-textual relations of both histories. It is possible to describe structural pattern of these stories by investigating their lyric structure. According to their theme, stories have different content (epic, romantic and mystic). In this research, the authors have compared two histories from Elahi-Nāmeh and One Thousand and One Nights according to Gérard Genette theoretical framework and inter textual relation by insisting on the their impressionability from folk literature.
     

Badri Sadat Seyed Jalali, Shahram Modarres Khiabani, Seyed Mohammad Karimi BehBahani,
Volume 8, Issue 7 (No. 7 (Tome 42), Winter Special, (Articles in Persian) 2017)
Abstract

Translation Quality Assessment (TQA) is one of the most noteworthy sub-fields of Translation Studies. The current qualitative descriptive study applied House's (1997) model, which is based on Hallidayan Systemic-Functional Theory, to investigate the quality of Farsi translations of Salinger’s Franny and Zooey translated by Milad Zakaria and Omid Nikfarjam. As House has suggested, translations are categorized into covert and overt ones. An overt translation, in contrast to covert translation which is domesticated toward target language, is one that must overtly be a translation with probable unfamiliar cultural elements. House claims that overt translation is preferred for culture-oriented texts, particularly literary ones. By applying Houses’s model, the present study aims to investigate the way in which the function of literary text is represented in target language system. To this end, selected segments of the corpus were compared and contrasted to their Persian equivalences in two mentioned translations. The findings of this research revealed that although both translations tended to familiarize the text to the translation audiences, Milad Zakaria’s translation was more overt compared with the translation by Omid Nikfarjam. Therefore, it can be claimed that the first translation is functionally more adequate compared to the second one in preserving the “function” of source text in target language.

Volume 9, Issue 1 (Winter 2023)
Abstract

Backgrounds: Reinfection among COVID-19 patients is still a challenging issue in the medical literature. Therefore, the current meta-analysis was conducted to estimate the pooled incidence rate of reinfection among COVID-19 patients.
Materials & Methods: A comprehensive search was conducted in PubMed, Web of Science, and Scopus databases from July 1 to October 1, 2021. Original studies which estimated the incidence rate of COVID-19 reinfection were included. CASP (Critical Appraisal skills program) was used to assess the quality of studies. Data were analyzed by STATA statistical software Version 15 (StataCorp, College Station, TX, USA).
Findings: A total of 3803 articles were found, of which 16 articles remained after title, abstract, and full text screening. The minimum and maximum incidence rates of reinfection were 0.001 and 0.73%, respectively. The pooled estimated incidence rate of COVID-19 reinfection was 0.11% (95% confidence interval: 0.02-0.20, p< .001, I2 = 100.0). The highest pooled estimated incidence rate of reinfection was observed in people <50 years old (0.14%) (95% CI: 0.001-0.34, p<.001, I2 = 100). Regarding the time elapsed after the first infection, the highest reinfection rate occurred four months after the first infection (0.12%) (95% CI: 0.001-0.27, p< .001, I2 = 100).
Conclusion: The incidence rate of reinfection among COVID-19 patients is expected to be high. However, it seems that the influence of factors including the age of patients and the time elapsed after the first infection must be considered.


Volume 9, Issue 3 (Summer 2021)
Abstract

Aims: Health care providers are considered as the pioneer forces of the health system. Thus, it is necessary to promote the health of this group in society by creating proper nutritional behaviors, especially the consumption of dairy products. This study was conducted to investigate the determinants of dairy use status and effective factors on consumption behaviors based on the Health Belief Model among health care providers of health centers.
Instrument & Methods: Throughout this descriptive-analytical study, 303 health care providers who work in the health centers of Urmia were included in the study by the census sampling method. The data collection instruments were researcher-made reliable and validated questionnaires in three sections of personal profile, consumption status of different types of dairy, and health belief model. Data were collected using structured interviews, then analyzed by SPSS 24 and the descriptive-analytical tests (ANOVA and Linear Regression).
Findings: The mean±SD age of the participants was 38.57±6.36 years. Among the Health Belief Model structures, the dimension of self-efficiency showed a significant relationship with the score of the dairy consumption behavior (p=0.0001). Additionally, there was a meaningful, significant relationship between the mean score of dairy consumption behavior with occupational status, marital status, and ethnicity (p<0.05). According to the linear regression test totally, the health belief model structures indicated 20% of the variance of the dairy consumption behavior. The predicting power of perceived self-efficiency was more than other structures of the model.
Conclusion: Perceived self-efficacy predicted the behavior of dairy consumption in the studied health care providers.


Volume 10, Issue 2 (9-2010)
Abstract

Numerical solution for mixed convection combined with surface radiation in an inclined channel containing three protruding heat sourcesis investigated in this article. This combinationre present printed circuit boards in electrical equipments. Air is assumed to be the working fluid which is laminar, steady, incompressible and thermally and hydrodynamicaly developing. Governing equations are discretized using the F.V. method in an staggered domain and simple algorithm is used to couple velocity and a pressure. Numerical results presented for temperature and velocity contribution and maximum temperature that occur in chips for different valuesof fan velocity as Reynolds number 150

Volume 10, Issue 3 (Number 3 - 2008)
Abstract

This paper describes a simple, physically-based conceptual model utilizing watershed drainage characteristics for rainfall-runoff simulation. This conceptual physiographic model is essentially based on the work of Najafi (2003), which has led to a model compris-ing the main tributary subwatersheds and a single main channel subwatershed. The Ki-nematic Wave (KW) theory is used to describe flow over the subwatershed plans. The dy-namic wave theory is applied for channel flow computations to compute the watershed re-sponses at the outlet. The proposed model was tested on a natural watershed where the results could be compared with the results obtained by Najafi (2003). The results show the proposed physiographic model has advantages over the former in terms of mathematical formulation and input data preparation as well as computation time requirements.

Volume 11, Issue 2 (Spring 2020)
Abstract

Foot and Mouth Disease (FMD) is a highly contagious and devastating disease that spreads rapidly and causes many economic damages. One of the important      methods for detection of FMD and particularly differentiation of vaccinated from infected animals, is the use of non-structural proteins as antigens in ELISA kits. The purpose of this study was cloning of the gene sequence and expression of the antigenic regions of 3D nonstructural protein as one of the diagnostic options. For amplification of the antigenic regions of FMD virus 3D protein, specific primers containing NdeI and EcoRI restriction sites were designed and the polymerase chain reaction was performed. The sequences cut by these two enzymes, were inserted into PET21a+ vectors. The recombinant plasmids were then transformed into E. coli (DH5α). Colony-PCR tests and enzymatic digestions were performed on the resulting colonies and the presence of the target gene was confirmed. The gene sequence was further confirmed after sequencing. For production of recombinant antigens, the recombinant vector was transferred to the expression host of E. coli-BL21. The bacteria containing the recombinant gene were induced with IPTG and the expression of the recombinant protein was confirmed using the SDS-PAGE method. The molecular weight of the recombinant protein was about 24 kDa, and it can be used in the design of ELISA diagnostic kit.

Volume 12, Issue 2 (Spring 2024)
Abstract

Aims: Despite the advantages of physical activity, many people still don't exercise much. The study aimed to examine the impact of intervention mapping model-based training on the health-promoting behaviors of Ilam University of Medical Sciences employees.
Materials & Methods: In this semi-experimental study, 221 Ilam University of Medical Sciences staff were given Walker's health-promoting lifestyle questionnaire to determine their needs. Then, a training program was created to increase staff physical activity levels based on the efficient structures. Sixty Ilam University of Medical Sciences employees who scored lowest on the physical activity dimension participated in the educational intervention phase. Participants received the international physical activity questionnaire before and three months after the intervention. Data analysis was done using SPSS 22 software by independent t-test, paired t-test, Pearson correlation coefficient, one-way analysis of variance, and generalized linear regression.
Findings: Among the health-promoting lifestyle dimensions, the physical activity dimension was identified as the most important predictor of health-promoting behaviors. There were significant differences before and after the educational intervention in the housework and family care and the average physical activity (p<0.05). The average total physical activity increased significantly after the educational intervention compared to before the intervention (p<0.016).
Conclusion: The mapping model education improves physical activity levels in medical university staff.
 

Volume 13, Issue 1 (4-2013)
Abstract

Abstract-Two-fluid models are the most accurate and complex models for analysis of two-phase flows. There are two different two-fluid models for analyzing compressible isothermal two-phase flows which are Single Pressure Model (SPM) and Two-Pressure Model (TPM). In spite of capabilities of these models in capturing two-phase flow behavior, it is not possible to express them in conservative form due to existence of non-conservative term in momentum equation of phases. Therefore, the classical Rankine-Hugoniot condition across discontinuities in the flow filed is not applicable for these equations and there would be difficulty in using classical numerical methods for solving these equations. In this paper a new path-conservative method is used to overcome this difficulty. In this method, one can apply general Rankine-Hugoniot condition along a path connecting left and right states of the discontinuity. After expressing path-conservative form of the employed central numerical methods which are Lax-Fridriches, Lax-Wendroff and Rusanove, water faucet and large relative velocity shock tube problems are solved by using these schemes. Grid independence was achieved using different grid sizes. For water faucet problem, comparison of numerical results with analytical solution show good agreement and for shock tube problem, the results indicate that this method is highly capable in capturing discontinuities in two-phase flow.

Volume 13, Issue 14 (Second Special Issue 2014)
Abstract

Extended finite element method (XFEM) is one of the strongest numerical methods that its basis is finite element but regardless of mesh location respect to discountinuty solves the problems. In this method, using of enreaching the nodes and increasing of their degrees of freedom (from 2 to 4 or even upto 10) virtually and without verifying the mesh and geometry of discountinuty, one can model and develop the required governing equations of the system. In this paper, fatigue crack growth of repaired aluminum panels containing a crack is studied. The cracked panels were repaired on one side with glass/epoxy composite patches in the mixed mode condition. The extended finite element method is used to study the effects of patch lay-up configuration on crack front displacement and stress intensity factor and the effect of crack angle on stress intensity factor of the repaired panels. The results show that the plate-fiber-fiber-aluminum configuration has best effect and it could reduce the stress intensity factor (k1) by upto seventy percent.

Volume 13, Issue 51 (7-2016)
Abstract

  The aim of the study was to evaluate antimicrobial effect of extract of Lamiaceae plants (Thymus vulgaris L., Mentha spp. and Ziziphora tenuir L.) to prevent growth of pathogenic bacteria (Staphylococcus aureus, Geotrichum candidium) was studied  industrial Doogh samples. For this purpose, three levels of concentration of extract that containing (0, 0.075, 0.15 v/v) was prepared. Survival or decrease in the bacterial population in 40 treatments (3 times repeated) in the samples of sterilized Doogh, which that contain a suspension of pure specific strains of Staphylococcus and Geotrichum in the during 24 hours and 14 days by measuring the kinetics of bacterial pathogens was investigated using response surface design. Analysis Results in the inhibition effects of natural antibiotic agent in the Doogh samples revealed that  concentrations of thymus extract % 0.14 (v/v) , Mentha oil % 0.11 (v/v) and Ziziphora oil % 0(v/v)  is the inoculation rate, which in most circumstances Reduction Staphylococcus aureus in 24 h 2.84Log/ml, 7 days in the 1.63 Log/ml

Volume 13, Issue 52 (4-2016)
Abstract

Mespilus germanica as a valuable medicinal plants used in traditional medicine. Aim of this study, investigated effect of combination various ratio of solvents (Glycerin, Ethanol, Methanol and Water) on the efficiency of Mespilus extract by mixture optimal design. Numerical optimization was used to obtain the optimal formulation of solvent. At the end of the day, the antimicrobial effect of Mespilus extracts based on three methods (agar diffusion Method, Minimum Inhibitory Concentration and Minimum Bactericidal Concentration) on the three microorganisms managing infectious diseases was investigated in vitro. In this study, investigated effect water, ethanol, methanol and glycerin on the five levels (0, 31.25, 83.33, 125,250 mm) on efficiency of Mespilusextracts by mixture optimal design. Diffusion agar test, Minimum Inhibitory Concentration, Minimum Bactericidal Concentration by microbroth dilution method was used to determination Susceptibility of bacterial isolate. The Result indicated that Scheffe polynomial model was highly significant for efficiency of Mespilusextracts. Minimum Inhibitory Concentration of Staphylococcusaureus, Escherichia coli, Pseudomonas aeruginosa were 1.25, 2.5 and 5 mg/ml, respectively. The optimum condition has been found as following: glycerin (0 ml), water (23.7 ml), methanol (100.2ml) and ethanol (126.1 ml) respectively.  It’s worth to mention that there was no significant difference between experimental and predicted value in optimum condition. Mespilus extract was highly significant for reduce of Infectious bacteria. Mixture methodology based on the D-optimal design was able to statistical assessment extraction process with the minimum experiment.

Volume 13, Issue 53 (5-2015)
Abstract

  The aim of this work was identified lactic floraas a traditional fermented food and then evaluates antimicrobial activities of some strains. A total of 140 Gram-positive and catalase-negative isolates were subjected to grouping by physiological and biochemical tests and carbohydrates fermentation. Based on the resultsthese 140 isolateswere dividedinto 9 groups. Two or three isolated were selected from each group and 16S rRNA was amplified using universal primers. Diversity of lactic acid bacteria in horreh was as followings:Lactobacillus fermentum (30.00%),Lactobacillus plantarum (28.57%), Lactobacillus brevis (15.00%), Weissellacibaria(8.57%),Enterococcus (faecium and faecalis) (7.14 %), Leuconostoc (citreumand mesenteroides subsp.Mesenteroides) (6.42%) and Pediococcus pentosaceus (4.28%). Antagonistic activity of 20 isolates (strains) of lactic acid bacteriaobtained fromhorreh was evaluated against food- borne bacteria. Sixteen isolates in Agar spot method and 14 isolates in well diffusion assayshowed antibacterial activity against at least one of these indicators. Eight isolates including:Ent. faecium (1), Ent. faecalis (1), P. pentosaceus(1) and Lb. plantarum (2) exhibited  the  highest  antagonistic  activity toward Listeria innocoa. Antagonistic activity of cell free supernatant (CFS) from Lb. plantarum showed the highest thermal stability. Also, two isolates belonging to:Ent. faecium, Ent. Faecalis presented antibacterial activity at pH=7. Only, the supernatant of Lb. plantarum was not influenced by proteinase K.The results showed that the supernatant of some isolatestestedcan be used as a bio preservative in food products.

Volume 13, Issue 54 (8-2015)
Abstract

Kimchi is a fermented herbal supplement, and appetizer that according to a raw material, process and geographical location are classified more than161 types. In this study, after kimchi production, isolation and identification of microorganisms was performed by molecular method. Lipase producing strain, Trichosporon asahii was isolated from kimchi sample (19.01 ±3 U/ml). The various medium components and culture parameters to achieve a more cost effective and economically viable bioprocess were screened and optimized using Design Expert software. PBdesignsare used to screen the most effective variables on lipase production that fermentation temperature and initial pHfor 48 hours 30 . According to the results, extract of nigella sativa, olive oil, yeast extract, magnesium chloride, respectively, were the most variable. Variable particle size and pepton ehavenegative effect. The variable selection and optimization on was performed more efficiently. Finally, lipase activity was 35 ± 0.5 U/ml in the optimal conditions using a medium containing15% sativa extract, 10 g/l yeast extract, 22.5 g/l olive oiland25 mM/l magnesium chloride in the rotation speed of 150 rpm, respectively, as well as enzyme activityafter84/1times the optimal state before optimization. The kinetic parameters V (max) and K (m) was 0.367 mM / min and 0.53 mM through Michaelis–Menten Chart, respectively. Low Km indicates high affinity between enzyme and substrate and high Vmax demonstrates high catalytic performance of the enzyme

Volume 13, Issue 54 (8-2015)
Abstract

Kimchi is a general term for fermented vegetables.The aim of this study was to isolate and identify the Lactic Acid Bacteria involved in spontaneous fermentation of this product used biochemical and molecular methods. In this study, after successive culture on specific media, in order to classify of 85 selected isolates that according to preliminary experiments seemed Lactic Acid Bacteria, physiological and biochemical tests were done and then fermentation of 10 different carbohydrates were performed. Based on these tests, 85 isolates were divided into 10 groups. Some isolates were selected from each group and 16S rRNA was amplified using universal primers. Diversity of lactic acid bacteria in Kimichi was as followings: Lactobacillus plantarum (41.17%), Lactobacillus fermentum (9.41%), Enterococcus faecalis (3.52%), Enterococcus faecium (7.06%), Leuconostoc citreum (2.35%), Leuconostoc mesenteroides (3.52%), Pediococcus pentosaceus (8.23%), Wisella cibaria (24.70%). This fermented product has a wide microbial diversity which originates from natural microbiota presented in the raw vegetable. Lactic acid bacteria can produce a variety of acids and enzymes which play an important role in development of unique flavor and tasteTherefore, this strains that isolated from Kimchi can be used in the food industry.

Volume 13, Issue 55 (9-2015)
Abstract

Infectious diseases created by strains of Antibiotic resistance Escherichia coli and Staphylococcus aureus, is increasing in many countries such as Iran. Therefore, many efforts are performing in order to find a new composition as replacement for antibiotics. In this experimental research, an antimicrobial effect of the ethanolic and aqueous extract of Hibiscus Sabdariffa was investigated on several strains of Escherichia coli and Staphylococcus aureus resistant to common clinical antibiotics.The extract of Hibiscus Sabdariffa was prepared using rotary. Twenty strains of Escherichia coli and Staphylococcus aureus were provided from Mashhad University of Medical Sciences. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined using Serial Dilution Method in six concentrations onto strains of Escherichia coli and Staphylococcus aureus in broth media.The results showed that Escherichia coli was resistant to antibiotics of penicillin (75.9%), erythromycin (58.3%), tetracycline (56.9%), and cefixime (37%), and Staphylococcus aureus showed resistant to antibiotics of penicillin (83.5%), cefixime (80%), erythromycin (55.6%), and tetracycline (26.1%), respectively. Also, the ethanolic extract of Hibiscus Sabdariffa has acceptable effect on antibiotic resistant strains of Escherichia coli and Staphylococcus aureus that MIC of the Hibiscus Sabdariffa ethanolic extract was 4 and 16 mg/mL for Escherichia coli and Staphylococcus aureus, respectively.The overall, the Hibiscus Sabdariffa extract has inhibitory ability on Antibiotic resistant Escherichia coli and Staphylococcus aureus strains. So, the ethanolic and aqueous extract of Hibiscus tea can be used in in pharmaceutical industry for medical treatments with perfect study.

Page 1 from 6    
First
Previous
1