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Showing 25 results for Hakimi


Volume 1, Issue 1 (spring 2020)
Abstract

Based on the mental health comprehensive plan of development expression in 2015, mental disorders owned the second place of illnesses in Iran and residents of urban areas are the majority of the groups that most had been suffering from mental disorders. Therefore, urban living is a risk factor for residents’ mental health. While the issue of mental health and health is finding an acceptable place in urban design knowledge in global research, only in the last few years this study field has been considered in Iran with respect to the physical aspect of health and the psychological dimension of health remains neglected. Therefore, the purpose of the present study is to examine the relationship between mental health and urban environment and to propose a conceptual framework aimed at promoting mental health through urban design. In the present qualitative study, the data collection is done through desk study of related valuable scientific papers, and qualitative content analysis is used to extract the urban design qualities related to mental health. The validity of conceptual framework is done through interviews with experts in the fields of urban design and psychology, and completing the questionnaire and data analysis has been done using descriptive statistics. The results show that qualities such as "safety and security", "access to green-blue space", "permeability and walkability", "public realm quality", "place attachment", and "environmental cleanliness" in the substantive dimension and "social interaction and engagement" in the procedural dimension are related to residents’ mental health.


Volume 2, Issue 1 (3-2013)
Abstract

This paper reviews the research on taxonomy of the Trombidioidea in Iran, with an updated checklist of 32 species (+5 undetermined species) belonging to five families and 22 genera. Among them, 27 species (+1 undetermined species) are reported based on larvae only, three undetermined species based on adults only, and six species based on both larval and post-larval stages. Also, 14 species (+3 undetermined species) and 10 genera belonging to the family Trombidiidae, one undetermined species belonging to the family Podothrombiidae, 13 species (+1 undetermined species) and seven genera belonging to the family Microtrombidiidae, three species, three genera belonging to the family Neothrombiidae and two species and one genus belonging to the family Achaemenothrombiidae. Major contributions to the Iranian fauna of the Trombidioidea were made by Alireza Saboori and his colleagues, and Zhi-Qiang Zhang. There have been some studies on the biology and the application of the Trombidioidea in biological control in Iran.

Volume 2, Issue 1 (3-2013)
Abstract

The genus Conophorus Meigen, 1803 (Diptera: Bombyliidae: Conophorini) was studied in the north and northwestern parts of Iran. Three species of the genus Conophorus were identified; two of them are recorded for the first time from Iran, namely: C. pseudaduncus Paramonov, 1929 and C. rjabovi Paramonov, 1929, in addition to C. glaucescens (Loew, 1863), which was previously recorded in Iran. Morphological characters, geographical distributions, and an identification key for the three collected species are provided.

Volume 2, Issue 4 (12-2016)
Abstract

During a study on fauna of the frit flies (Diptera: Chloropidae) in Khorasan Razavi province (Iran) in 2014 and 2015, nine species of six genera were collected and identified. Platycephala rugosa (Nartshuk, 1964) is recorded for the first time for Iranian fauna. Geographical distribution and biological notes are provided.

Volume 3, Issue 3 (9-2014)
Abstract

The genus Exoprosopa Macqurt, 1840 (Diptera: Bombyliidae: Anthracinae) was studied in the north central Iran. Four species of the genus Exoprosopa were identified of which E. minos (Meigen,1804) and E. grandis (Pallas, 1818) were previously recorded from northern parts of Iran ( or north of Iran ) and two species namely E. efflatounbeyi Paramonov, 1928and E. altaica Paramonov, 1925 are newly recorded from Iran. A key to the species in north central Iran is provided. Morphological diagnostic characters and geographical distribution of the collected species are briefly discussed.    

Volume 6, Issue 1 (spring 2025)
Abstract

Students on university campuses constantly encounter a variety of teaching and learning environments in addition to a range of difficulties, such as social and academic demands that are detrimental to their mental and physical well-being. This issue is heightened by the significance of creating healthy and restorative areas in universities to lower stress levels and restore concentration for more effective studying. The present research therefore aims to explore the students’ needs and preferences for restorative areas in the Faculty of Science at Ferdowsi University Campus in Mashhad, as well as to develop a conceptual framework demonstrating key urban design components of a restorative university campus. The present research is qualitative. 33 students from Ferdowsi University`s Faculty of Sciences participated in the structured interviews to collect data, which was then analyzed utilizing a qualitative content analysis of the conducted interviews. The study`s findings demonstrate that, from the students' viewpoint, the university campus environment has been restored through the following qualities: serene and refuge, walkability, high-quality public space, linkage to nature, coherence and extent, compatibility, and sociability. Therefore, there is a spatial component to health, and students` mental restoration can be aided by being in open and semi-open places near natural features like trees, plants, and other qualities of urban design that promote health.
 

Volume 7, Issue 1 (6-2016)
Abstract

Lipases, as an important enzyme group, are able to catalyze hydrolysis or synthesis of esters.The lipase from pseudomonas fluorescens (E.C.3.1.1.3) is a thermophilic kind of lipases (MW around 33 Kd). In this study, the effect of different concentrations of sorbitol on the activity and conformational stability of Psedomonas fluorescence lipase was evaluated using UV/Vis and Circular Dichroism (CD), respectively. According to the results of thermodynamic studies the 0.6 M concentration of sorbitol was selected for refolding and unfolding kinetic measurements with stopped flow fluorescence apparatus. Kinetics data indicate that unfolding of lipase is performed via two different pathways; one of them is probably involves a synchronous unfolding and dissociation of subunits and the other one comprises a two step unfolding in which the subunits are first dissociated followed by complete unfolding of subunits. We found that more population of protein molecules unfolded with slow phase unfolding pathway when sorbitol is present in the unfolding buffer. Furthermore; refolding kinetics data suggest that in the presence of sorbitol the energy barrier of refolding is reduced.

Volume 7, Issue 4 (Fall 2021)
Abstract

Backgrounds: This research aimed to estimate the prevalence of extended-spectrum b-lactamase-producing Enterobacteriaceae (ESBL-PE) in stool samples of patients with different types of cancer.
Materials and Methods: Stool samples or deep rectal swabs were collected from cancer cases from January 2017 to December 2018. After species identification, in order to detect ESBL-PE, double-disk synergy test (DD test) was used. Disk diffusion procedure was conducted to determine the susceptibility of bacteria to antimicrobials. Lastly, antibiotic resistance genes including bla genes were characterized via polymerase chain reaction (PCR).
Findings: Among 100 patients enrolled in this study, 50 (50%) were ESBL carriers. Escherichia coli was the most prevalent bacterium isolated (85%). Genotyping of EBSL-PE encoding genes using PCR showed that the prevalence rates of blaCTX-M and blaCTX-M-15 genes were 94 (47 of 50) and 90% (45 of 50), respectively, which were higher than those of blaTEM (80%, 40 of 50) and blaSHV genes (34%, 17of 50). There was no significant association between ESBL-PE fecal carriage and age (p= .68), sex (p = .49), time of diagnosis (p= .21), antibiotic therapy for the past three months (p= .77), and history of chemotherapy (p= .49). Finally, it was determined that cancer type was an associated risk factor for ESBL-PE fecal carriage in cancer patients. 
Conclusion: This research emphasizes regular bacterial monitoring, and that antibiotic stewardship plans ought to be performed among cancer patients to prohibit further spread of ESBL-PE with confined therapeutic options.


Volume 9, Issue 3 (Summer 2018)
Abstract

Aims: The G-quadruplex structural motifs of DNA are considered a novel target for drug discovery. As potential compounds, small molecules that selectively target the G-quadruplex structures may be used for therapeutic purposes. The aim of this study was the thermodynamic investigation of copper porphyrazines and phthalocyanine interaction with human telomeric G-quadruplex DNA.
Materials and Methods: In the present experimental study, interaction of an anionic water-soluble phthalocyanine Cu(PcTs) and two cationic water-soluble tetrapyridinoporphyrazines, including [Cu(2,3-tmtppa)] 4+ and [Cu(3,4-tmtppa)]4+ complexes with human telomeric G-quadruplex DNA was thermodynamically investigated in different concentrations of Na+ and K+ cations, using fluorescence spectroscopy. The data were analyzed via the Stern-Volmer plot and the van't Hoff plot.
Findings: Fluorescent intercalator displacement indicated the displacement ability of the complexes with thiazole orange. Stern-Volmer plots of the porphyrazines exhibited a slight positive deviation from a straight line, suggesting both static and dynamic quenching. In addition, the quenching effect of the two porphyrazines was noticeably higher than the phthalocyanine, implying binding of Cu(PcTs) to both forms of the quadruplex was weaker compared to Cu(2,3-tmtppa) and Cu(3,4-tmtppa). Gibbs free energy (∆G) for binding was negative, implying that the interaction between the complexes and the G-quadruplex DNA was favorable thermodynamically.
Conclusion: The binding of copper porphyrazines to G-quadruplex DNA is stronger than copper phthalocyanine, and their binding is favorable thermodynamically. Porphyrazines have potential to be used as anti-cancer compounds and are suitable complexes for pharmaceutical studies.


Volume 9, Issue 3 (Summer 2018)
Abstract

Aims: Studies based on thermal stability are considered as one of the methods for investigating the physicochemical properties of proteins in biotechnology. The aim of this study was to evaluate the effect of replacement of Arginine 39 amino acid with lysine on the heat denaturation of mnemiopsin photoprotein 1.
Materials and Methods: In the current experimental study, R39K mutated mnemiopsin was compared with wild protein (in which arginine 39 amino acid was converted to the lysine amino acid). In order to investigate the effect of mutation on the content of the secondary structure, a rotation interpolation method was used. To investigate the possible changes in the rate of thermal stability of mutated and wild proteins, heat denaturation measurements were performed by differential scanning calorimeter. Bioinformatics software were used to compare the structure of two types of proteins.
Findings: The mutated R39K compression decreased in comparison with wild protein. No significant change was observed in the values of thermodynamic parameters, especially Tm. The upward movement of arginine 187 amino acid in the mutated protein decreased the thermal stability of this protein. Increasing the accessible surface of lysine 188 in the mutated protein increased its stability.
Conclusion: In thermal stability of the R39K mutated protein, various factors are effective, including the molecular movements of amino acids, their accessible surface, and the content of the secondary structure of protein stabilizing. This mutation reduces the mutated R39K compression rather than the wild protein; increasing ASA related to Lys188 amino acid in the mutated R39K compared with wild protein increases protein stability, but reducing the amount of secondary structure in this mutated, accompanied by an increase in the molecular upward movement in the Arg187 amino acid serves to reduce the stability of this mutated.

Volume 10, Issue 3 (9-2024)
Abstract

Leptus (Leptus) molochinus (C. L. Koch, 1837) (Trombidiformes: Erythraeidae) was collected as an ectoparasite on Ophion sp. (Hymenoptera: Ichneumonidae), Paederus fuscipes Curtis, 1826 (Coleoptera: Staphylinidae), Cicadella viridis (L. 1758) (Hemiptera: Cicadellidae), Peritrechus sp. (Hemiptera: Lygaeidae); the ectoparasitic mite, Solistrus mitrae Saboori, Ueckermann & van Harten, 2008 was also found on an undetermined ant species (Hymenoptera: Formicidae) from Guilan province, Iran. Additional morphometric data for L. (L.) molochinus larvae are provided. Solistrus mitrae is reported for the second time in the world. Ophion sp. (Hymenoptera: Ichneumonidae), P. fuscipes (Coleoptera: Staphylinidae), C. viridis (Hemiptera: Cicadellidae) and Peritrechus sp. (Hemiptera: Lygaeidae) are recorded as new host taxa for L. (L.) molochinus and unknown ant species is new host for S. mitrae.

Volume 11, Issue 1 (3-2025)
Abstract

We here present the first record of Parawenhoekia aginapaica (Haitlinger, 1999) from Iran, which also represents the first record for the genus of the whole continent (Asia). The specimens were collected in association with an Oedipodinae grasshopper of the genus Aiolopus (Orthoptera: Acrididae). The genus Parawenhoekia Paoli, 1937 has only been known from three Mediterranean countries so far (Italy, Cyprus, and Montenegro) and hence our finding represents a large area extension. This study provides new metric and meristic data and supplements the current knowledge on the species based on new specimens of P. aginapaica collected from Khumeh Zar, Mamasani County, Fars Province, Iran. Photographs of important characteristics are provided. A key to the world species of Parawenhoekia is given.

Volume 11, Issue 2 (6-2025)
Abstract

The meristic data of the following species of terrestrial Parasitengona (Acari: Trombidiformes) from Australia are given: Paratrombium australe Southcott, 1997, P. anemone Southcott, 1997, P. curculionis Southcott, 1997, Eutrombidium trigonum (Walsh, 1866), E. orientale Southcott, 1993, Hexathrombium willisi Southcott, 1993, Verdunella lockleii (Welbourn & Young, 1988), Buandikia anneae Southcott, 1994, Willungella willungae (Hirst, 1931), Workandella virgata Southcott, 1994, Thormicrella janeae Southcott, 1994, Yurebilla gracilis Southcott, 1996, Abrolophus tonsor (Southcott, 1996), Harpagella moxonae Southcott, 1996, Callidosoma tindalei Southcott, 1972, C. rostratum Southcott, 1972, C. tiki Southcott, 1972, C. dasypodiae (Womersley, 1934), and C. susanae Clark, 2014. The type specimens were deposited in the South Australian Museum, Adelaide, Australia (SAM). A key to hermanni species subgroup  is also included.

Volume 12, Issue 3 (12-2012)
Abstract

This paper considers the problem of stable limit cycles generating in a class of uncertain nonlinear systems which leads to stable oscillations in the system’s output.This is a wanted behavior in many practical engineering problems. For this purpose, first the equation of the desirable limit cycle is achieved according to shape, amplitude and frequency of the required output oscillations. Then, the nonlinear control law is designed such that the phase portrait of the closed-loop system includes this stable limit cycle. The design of controller is based on the Lyapunov stability theorem which is suitable for stability analysis of the positive limit sets (the stable limit cycle is a positive limit set for the nonlinear dynamicl system). The proposed robust controller consists of two parts: nominal control law and additional term which guarantees the robust performance and vanishing the effect of uncertain terms. Finally, to show the applicability of the proposed method, an inertia pendulum system (with parametric uncertainties in its dynamical equations) is considered and the robust output oscillations are achieved by creating the desirable limit cycle in the close-loop system.

Volume 12, Issue 4 (12-2023)
Abstract

During a faunistic survey on mites in Kastamonu and Sinop provinces near Black Sea of Türkiye during the years 2013–2017, some larval specimens of parasitengone mites were collected from soil and light traps and identified as Erythraeus (E.) ankaraicus Saboori, Çobanoğlu and Bayram 2004, Allothrombium clavatum Saboori, Pešić and Hakimitabar, 2010, Abrolophus kazimierae (Haitlinger, 1986), Abrolophus poljankus Haitlinger and Šundić, 2021, Allothrombium meridionale Berlese, 1910, Empitrombium makolae Sevsay and Karakurt, 2013, Leptus (Leptus) slivovi Beron, 1975 and Calyptostoma velutinum (Müller, 1776). In this study, Leptus (Leptus) slivovi Beron, 1975, Abrolophus poljankus Haitlinger and Šundić, 2021 and Abrolophus balkanicus Haitlinger and Šundić, 2015 are new records to the mite fauna of Türkiye. Also, the identification key to known species of Abrolophus of the world without a comb-like seta on the palpal tarsus is updated.
 


 

Volume 13, Issue 2 (8-2013)
Abstract

The problem of power allocation for distributed detection in a power constrained wireless sensor network is considered. The sensors are assumed to have independent observations and send their local decisions to a fusion center over multiple access channels. The Jensen-Shannon divergence between the distributions of the detection statistic under different hypotheses is used as a performance criterion. It is demonstrated that by applying the proposed measure power allocation is more efficient comparing to other criteria like mean square error or Jeffry divergence.

Volume 16, Issue 7 (9-2016)
Abstract

Study air infiltration into the building in several ways such as energy, air quality, thermal comfort and pollution entering in the building is very important. In this context, many studies have been conducted in different countries. In our country due to the use of steel doors and windows, do independent research on the gap size and air infiltration is necessary .In this study, by practical view and in order to localize results, based on a field study, the actual dimensions of the gaps around conventional doors and windows in Iran is measured. The results of these measurements are used to simulate gaps, then with experimental study, air infiltration rate of this gaps is calculated at different pressures. In present study, after investigating the effect of different aspects of gaps on air infiltration rate, two common equations, power law and quadratic equation, in order to fitting data were compared. Results show that power law equation can adapt better to the experimental data. Coefficients of the power law equation to estimate the air infiltration rate through the gaps was presented. By analysis of the results, due to the proximity factor of the pressure difference to the number 0.5 in most of the results, it was concluded that the Bernoulli equation can be used to predict the air infiltration rate through the gaps. This equation is better compliance with laws and physical principles. Discharge coefficient of the Bernoulli equation for gaps with different dimensions are calculated.

Volume 16, Issue 11 (1-2017)
Abstract

Nowadays, modern windows with standard caulking used in most buildings. Study of air infiltration and caulking this windows in several ways such as energy, indoor air quality, thermal comfort and pollution entering in the building is important. In this study consists of two parts, first experimentally investigated the airtight performance of various window gaskets. For this purpose, using 8 different types of gaskets and simulate modern window gap, air infiltration rates measured at different pressure differences. The results show that the airtight performance of various gaskets are different. Also fitted the experimental results by power low equation, and relations and coefficients for calculate air infiltration rate of modern windows (sealed windows), respectively. In the second section due to the very low air infiltration rate of the experimental results, indoor air quality assessed by numerical modeling methods. In the sample model, air infiltration of modern windows as ventilation and human breathing as a source of CO2 simulated. Indoor air quality is weighed by the CO2 concentration in the interior space. The results show that the air infiltration of window gaps to ensure air quality during the 8 hours is not enough. Then, assuming uniform distribution of CO2 in the sample space, and solve the transfer species equation for the problem situation, analytical equation for evaluating indoor air quality were achieved. Analytical results matches on numerical simulation results exactly. The results of this study can be very useful for HVAC engineers.

Volume 16, Issue 11 (1-2017)
Abstract

In this study, fatigue growth of external surface cracks on the autofrettaged cylinders under bending is investigated. Autofrettage is a process in which a thick-walled cylinder subjected to internal pressure with known amount, causing some portions on the inner zone of the cylinder deformed plastically. In this case, removing the pressure causes compressive residual stresses on the inner layers and tensile stresses on the outer wall. The goal is increasing the fatigue durability of the product by inducing residual compressive stresses into materials, but along with this, there are adverse tensile stresses which can decrease the life due to the outer defects. In this paper, the external cracks are in the forms of half-elliptical, semi-elliptical and semi-circle. Samples made by aluminum 2024 alloy. The cylinders were autofrettaged up to 40 and 60 percent. Cracks were located in circumferential direction and normal to cylinder axis. The numerical simulations were performed by finite element method. Experimental data and numerical results were compared. Results show that the number of load cycles to fracture, in the 60% autofrettaged cylinders are smaller than those for 40% and also smaller than the state without autofrettage. Distribution of stress intensity factor along the crack front is symmetric and crack grows in its initial plane which indicating the dominance of the first mode of failure during the crack growth. In all samples, after some steps of the growth, crack front transforms to the semi-elliptical shape until complete fracture.

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