فهرست مطالب sh .mohammadi

Ants are a major part of the ecosystem as they assist in the decomposition process and improve soil quality. In this study the species richness and biodiversity of these arthropods was assessed in the habitats with varying degrees of human impact in Shiraz, Fars Province, southern Iran. To this end, six habitats including three city parks with the least amount of human destruction (Be’sat, Janat, Babakoohi), two habitats with high amount of manipulation in order to agriculture and urbanization (a field and a destroyed garden) and a natural park without any human manipulation as control, were chosen and sampled bimonthly during 2015 and 2106. A total of 6270 ant workers belonging to 30 species, 12 genera, and three subfamilies were recorded. The most abundant subfamily was Formicinae (16 species) followed by Myrmicinae (12 species), and Dolichoderinae (two species). The biodiversity indices showed a greater diversity in both natural park and urban landscape: Be’sat and Janat parks, with the lowest amount of human effects, respectively as well as Babakoohi and the lowest in the field and destroyed garden. Although a significant difference was observed with the habitats (F</em>= 4.255, P</em>=0.004) and the months (F</em>= 4.327, P</em>=0.002) of sampling, there was not a significant difference between Babakoohi, natural park, Janat and Be’sat parks (P</em>>0.05) nor between field and destroyed garden (P</em>>0.05).

Sepsis is one of the leading causes of death in intensive care units (ICU) and is becoming more prevalent globally. As a result, an accurate and timely diagnosis of sepsis is critical for selecting the best treatment to prevent disease progression and mortality. In this study, CRP and TNF-α as common biomarkers of sepsis were detected using a label-free optical biosensor based on interferometric Fourier transform spectroscopy from a porous silicon substrate. The porous silicon layer was chemically modified with APTES and glutaraldehyde to immobilize the aptamer covalently in order to capture the analyte. The refractive index of the porous layer was determined by analyzing the reflection spectrum from the porous layer, which was associated with different biomarker concentrations. The results demonstrated linear responses in concentrations ranging from 10-10000 ng/ml for CRP and 100-10000 ng/ml for TNF-α and the biosensor's high discrimination. Thus, it has a high potential for advancement in clinical sepsis diagnosis.

The present study aims to investigate the possibility of using wind energy in some regions of Zanjan province. The current research concentrates on computing the wind energy potential and wind power density. Furthermore, some features related to wind for two locations in Zanjan province have been obtained. Feasibility study of wind energy utilization and computing of wind power density and wind power potential has been widely (Extensively-comprehensively) conducted for Zanjan province. First, two locations in Zanjan province have been considered to analyze the data at a reasonable level of province and to avoid over-focusing on one area. Thereafter, the statistics about wind speed were achieved from the Renewable Energy Organization of Iran in ten-minute intervals and included wind speeds at the heights of 30,10, and 40 m and wind directions at heights of 30 and 37.5 m. Finally, various wind features have been investigated for given locations in Zanjan province. The results demonstrate that the annual wind speed for Soltanieh and Tarom in the height of 40 m were 4.81 m/s and 3.93 m / s, respectively. The highest value U_me and U_mp is calculated, It was observed at a height of 40 m at Soltanie, It is 11.35 m / s and 1.27 m / s, respectively. Also, the performance of several wind turbines in the mentioned areas has been investigated. Finally, a suitable wind turbine has been identified.

Determining the relationships between morphological traits is very important in plant breeding. For this purpose, path analysis and biplot analysis are among the most effective statistical methods. To study the morphological traits affecting faba bean seed yield, 12 introduced faba bean genotypes were studied under the influence of 3 concentrations of gibberellic acid based on split plot in a randomized complete block design with three replications in the research greenhouse of Shahrekord University, Shahrekord, Iran. The analysis of variance showed that there was a significant difference between genotypes in terms of all studied traits except for number of internodes, internode length, stem diameter, number of seeds per pod and root dry weight, indicating high genetic variation among the studied traits. The study of correlation coefficients showed that there was significant correlation between seed yield and all studied traits except for plant height, number of internodes, internode length, stem diameter, number of seeds per pod, and shoot dry weight. The results of multivariate regression based on stepwise method showed that among the studied traits, 3 traits including number of fertile pods, pod length, and number of seeds per plant were entered into the model, and altogether justified 86% of the variations of faba bean seed yield. The results of path analysis based on just identified model and over identified model showed that the most direct effect on faba bean seed yield was through the number of fertile pods, so that one unit change in this trait causes 0.784 units increase in faba bean seed yield. Thus, in selection for yield the number of fertile pods in the studied genotypes is of special importance. Biplot analysis as a bilinear model, identified the C2, C7 and C10 as suitable genotypes in terms of yield and yield related traits.

Ants are the most ubiquitous insects on the earth with more than 12000 species which are classified into 21 subfamilies. Until now, more than 170 ant species have recorded in Iran. Mutualistic relationship between ants and scale insects have been reported in Iran. Such relationships between ants and insects are known as trophobiosis which is due to attraction of ants to honeydew of scale insects. Honeydew is a sugar-rich sticky liquid, secreted by aphids and some scale insects as they feed on plant sap. Ants provide protection from predators and parasitoids by building shelters around scale insect colonies. Such a relationship is mostly facultative and only a few taxa of mostly tropical or subtropical scale insects have obligate mutualism with ants. The coccoids with obligate mutualism display obvious behavioral and morphological adaptations for living with ants. Ants are also able to establish antagonistic interaction with honeydew-producing hemipterans and contribute positively to biological control by the suppression of pests.

In a study during 2013-2014, colonies of the mealybug Paracoccus ficus Moghaddam, 2014 were investigated for mutualistic ants feeding on honeydew of the mealybug in fig orchards of Neyriz, Estahban and Shiraz cities of Fars province, South Iran. Samples were collected by hand, forceps and soft brush. The specimens were preserved in 75% alcohol in small glass vials and were transferred to the laboratory. The morphological keys were used for identification. Specimens were deposited in Insect and Mite Collection of Ahvaz, at Department of Plant Protection, Shahid Chamran University of Ahvaz.

Totally, 6 species belonging to 3 subfamilies of ants were identified as follows:Myrmicinae: Monomorium abeillei Andre, 1881; Tetramorium sp.; Pheidole pallidula Nylander, 1849; Crematogaster antaris Forel, 1894; Formicinae: Cataglyphis lividus Andre, 1881; Dolichoderinae: Tapinoma simrothi Krausse, 1911.
Among collected species, T. simrothi and P. pallidula were more frequent. T. simrothi has also recorded as most frequent mutualistic ants with aphids in Central Iran. Natural enemies exploit hemipterans which receive ant protection for their benefit. For example, some parasitoid wasps soliciting honeydew directly from aphids by antennation and mimicking ants during foraging in host patches. Researchers believe that preventing ants from colonies of Pseudococcidae scale insects is necessary for success in biological control of such pests. However, not all of ants have negative effects in biological control of pests. Predatory ants are less attracted to the honeydew and mostly feed on egg, larvae and adult insects. Moreover, some ants are important in pollination, soil improvement, and nutrient cycling.  

Behavioral and ecological should be carried on ants in pest management programs, and only if they have a negative influence on biological control of scale insects, then perform control measures for ants.

Busulfan is a chemotherapy drug that has side effects such as hepatic and renal injury. Pistacia atlantica from the family Anacardiaceae has a potent antioxidant agent due to phenolic compounds. The purpose of this study was to investigate the effects of Pistacia atlantica on histopathology and liver and kidney function indicators in busulfan-induced liver and kidney injuries in adult mice.

A total of 28 BALB/c mice were randomly divided into four groups (control, busulfan, bene and bene+busulfan). The busulfan group received 10 mg/kg busulfan as a single dose and intraperitoneally. The bene group received plate containing 10% of bene for 35 days. The bene+busulfan group received 10 mg/kg busulfan+10% bene. Then, liver enzymes alanine amino transferase, aspartate amino transferase, urea, creatinine and histopathology of liver and kidney investigated.

The mean urea (P= 0.009) and creatinine level (P= 0.02) in the busulfan group was 55.2±4.23 and 0.8±0.11 mg/dl that it was significantly higher than the bene + busulfan. A significant decrease in ALT level in the bene + busulfan group compared to the busulfan treated group (P= 0.03). In the bene treated group steatosis, necrosis and fibrosis in the liver parenchyma and glomerular sclerosis, inflammation and tubular atrophy in kidney tissue, was not observed.

The results of present study indicated that administration of 10% bene for 35 days improved histopathology of kidney and liver as well as functional index of liver and kidney after renal-liver injury.

Drought stress is considered as one of the most important constraints to the crop production, including medicinal plants in many arid and semi-arid regions. This study was carried out to determine the most effective indices for drought tolerance and identification of tolerance genotypes under drought conditions in N. sativa. For this purpose, 36 genotypes of N. sativa were tested as a split plot experiment based on a randomized complete block design with three replications at Agricultural Research Field of Shahrekord University, Shahrekord, Iran under two irrigation conditions (non- stress and drought stress) at 2017-2018. The results showed that there were significant differences among different genotypes in terms of all drought stress tolerance indices. A modest correlation was observed between grain yield under normal and stress conditions (R2 = 0.43). Grain yield showed a positive and significant correlation with all indices under normal conditions, except for yield stability index (YSI). The MP, GMP and STI had positive and significant correlations with grain yield under both normal and drought stress conditions. According to principal component analysis, the first component explained about 63% of the total variation, which was correlated positively with YP, MP, GMP, and STI indices. Therefore, MP, GMP and STI could be used to select drought-tolerant genotypes. Based on the high grain yield potential and high drought tolerance observed for Nige53, Nige59 and 38923 genotypes, these genotypes could be recommended for cultivation under drought stress conditions and further studies in breeding programs.

The present study aimed to evaluate the barriers to general medicine dissertation implementation in Zahedan University of Medical Sciences from the perspective of faculty members in 2017.

In this descriptive study, a self-administered questionnaire was distributed among 100 faculty members of Zahedan University of Medical Sciences using census method and 80 questionnaires were completed. Data were analyzed using Chi-square test.

49 (62.7%) of supervisors presented inadequate education of students in literature review, 32 (41.8%) lack of sufficient information about research priorities of the country, 29 (32.8%) lack of student guidance in theses writing (p=0.018) and 39 (46.3%) the statistical analysis of the results and their misunderstanding by the student as the main problems.

The results showed that the most important obstacle for faculty members was inadequate education of the students in the review of literature and articles. In this regard, holding research methodology workshops can be effective.

Aging is accompanied with low concentration of testosterone hormone and apoptosis induction in the testis. The aim of this research was to investigate the effects of different doses of curcumin as the active ingredient of Curcuma Longa Turmeric, on sperm quality and oxidative stress in mice D-galactose-induced aging model. 48 Balb/c mice (n=8) were randomly assigned to 6 groups: control, Sham, D-galactose and Curcumin 1 to 3 groups. 300 mg/kg of D-galactose was injected to D-galactose group. Curcumin 1 to 3 were injected D-galactose + 25, 50 and 100 mg/kg curcumin intraperitoneally. Then, the oxidative stress based on biochemical parameters and sperm analysis according to WHO guideline were evaluated on day 42 of the experiment. Mean sperm count in control group was (4.17±0.84) while it reduced after reception of 300 mg/kg
D-galactose (3.06±0.86). There was a significant increase in the sperm parameters in Curcumin group compared to the D-galactose group (p<0.05). A significant increase was observed in the level of thiol and superoxide dismutase enzyme in curcumin group 3, compared to the D-galactose group (p≤0.001). Significant decreases in catalase and malondialdehyde enzymes were observed in the D-galactose group, compared to the curcumin 1, curcumin 2 and curcumin 3 groups (p<0.05). Administration of curcumin for 2 weeks improved sperm parameters and decreased oxidative stress in testis of mice D-galactose-induced aging model.

Brain ischemia is one of the leading causes of death and physical disability worldwide. Flavonoids found in Raspberry fruit (RF) play an important role against oxidative stress injuries in the biological systems.
The present study was carried out to evaluate the effect of RF on ischemia/reperfusion (I/R)-induced brain injury in rats.
In the present experimental study, 42 wistar adult male rats weighing 200–250 g were divided into six groups as sham operated (Sh), ischemia/reperfusion (I/R) received normal saline (I嗨), I/R groups treated with RF extract (I, 50, 100, or 200 mg/kg, IP, respectively). The global cerebral I/R was induced by occluding bilateral common carotid arteries for 30 min, followed by reperfusion. Behavioral test performed with shuttle box and analgesia test performed with tail flick test.
Administration of RF extract 50, 100, or 200 mg/kg doses increased passive avoidance memory significantly (P Results of this study showed that RF extract possesses protective effects against pain and memory deficits induced by I/R, which may be due to its anti-inflammatory and antioxidant effects.

One of the most common and troublesome types of anxiety is social anxiety in which individuals experience extreme fear and anxiety when they are faced with society. Therefore, this study was conducted to determine the relationship between the aspects of emotion regulation and social anxiety in married women.
The research method was correlational. The statistical population included all married women in Isfahan in 2014 from whom 313 were selected through clustered random sampling method. The research instruments were Cotter et.al (2000) social anxiety questionnaire, Young's early maladaptive schema and cognitive emotion regulation questionnaire. In order to analyze the data, the descriptive analysis method and Pearson correlation statistical method software were applied in SPSS18.
Findings showed that the first, second and fifth early maladaptive schemata had a positive significant relationship with social anxiety (p=0.01). Moreover, from the aspects of emotion regulation, the components of self-reproach, mental rumination, catastrophic imagination and reproaching others had a positive significant relationship with social anxiety (p=0.01). However, this relationship was significantly negative with the variables of positive re-evaluation and positive re-attention (p=0.01).
According to the results of this study, in order to investigate the social anxiety among women, the role of early maladaptive schemata and their cognitive emotion regulation should be adequately taken into account.

Learning dentistry could have many tension and anxieties like encountering to a strange clinical environment. Early clinical exposure (ECE) is supposed to control these stresses. ECE program is an increasingly widespread component of educational curriculum. This study aims to determine the effect of early clinical exposure on the attitude of dental students’ towards dental education and profession.

An analytic study was performed on all 72 dental students studying basic science at Faculty of Dentistry of Shahid Sadoughi University of Medical Sciences consisted of a short term course of introduction to clinical environment in academic year of 2011-2012. Every 12 students attended in an one day ECE course from 8 AM to 1 PM. Students ' attitude towards dental profession and education were assessed by a questionnaire included 25 items before and after the course. For data analysis descriptive paired-t-test was used.

All students completed the questionnaires. Student's attitude towards dental education and profession was evaluated. Mean score of student's attitude before and after exposure to clinical environment were 94.6 and 100.5 respectively. Significant differences were found in the student's attitude before and after the course (P=0.001)

Based on the results of this study, we found a positive effect of early clinical exposure on attitudes of first and second year dental students. Demographic variations had an effect on the student's attitude. Therefore; we suggest that early clinical exposure should be added to educational curriculum of dental students.

Half diallel crosses of nine Iranian wheat cultivars were used for graphical analysis and estimation of genetic parameters related to yield and its components. Parents with F2 generations were evaluated in a randomized complete blocks design with three replications. The analysis of variance revealed significant differences among genotypes for all traits except tiller number and grain weight per main spike. The test of Jinks and Hayman revealed that assumptions are valid for flag leaf length, plant height, grain yield per plant, main spike length and peduncle length, but for flag leaf width and peduncle weigth when one parent was excluded, the assumptions were fulfiled. According to the estimations of average degree of dominance and results of graphical analysis, the gene actions for flag leaf length, flag leaf width, plant height, grain yield per plant, main spike length, peduncle length and peduncle weight were partial dominance

Multiple sclerosis (MS) is one of common autoimmune diseases with 0.1% incidence in the world population. Pain is one of its clinical manifestations and, according to recent studies, it mostly remains untreated. Pain relief is a primary nursing intervention and, currently, complementary therapies such as massage and aromatherapy are increasingly used for it. This quasi-experimental study was conducted to compare between the effects of massage with menthol (aromatherapy) and sweet almond on MS-related pain in patients referring to Mazandaran MS Association in Sari, 2006. 80 MS patients were selected by purposive sampling method. Inclusion criteria consisted of age between 20 and 40; no massage prohibition; presence of pain in lumbar or distal extremities; no history of allergy, headache and respiratory diseases. Data were collected by a questionnaire in two parts: demographics and McGill pain scale (0-5). Its validity and reliability were checked by content and internal consistency (r=0.88) methods respectively. Patients were randomly divided into two groups: massage group receiving sweet almond massage and aromatherapy group receiving aromatic (mint abstract) menthol massage. Severity of pain was recorded and compared before and after the intervention. Finding showed no difference between the groups in terms of demographic data and pain severity before the intervention (P< 0.05). On the other hand, a significant difference was found within.

When inner ear is disturbed, both hearing sensitivity and selective property decrease. Early rehabilitation for proper progression of speech and language appropriate to age is mandatory. Several studies were performed to compare factors that affect the results of cochlear implantations to select the best candidates on the basis of different criteria. This study was undertaken to compare speech perception and intelligibility between two groups of hereditary and non-hereditary deaf patients. Patients & In this descriptive-comparative study, prelingual patients(below the age of 7) who had profound deafness(unable to identify sounds with severity of>90 dB) and admitted to Rasoul-e-Akram Hospital(1992-2004) were assessed by census method. For determination of speech perception a standard CAP test as well as a standard 2-syllable words test were used and for determination of speech intelligibility a standard SIR test was used after 2 years of cochlear implantation. Relationship between parents and the existance of another deaf person in the family, with absence of definite cause for deafness, were considered as a hereditary deafness while other cases were considered as non-hereditary deafness. The mean age of patients was 71.47 months with SD=35.51. 42.5% of cases had hereditary and 57.5% of them had non-hereditary deafness. The mean perception scores of 2-syllable words were 45.78%(SD=34.73) and 46.28%(SD=33.85) in hereditary and non-hereditary deaf children respectively. Between two groups of hereditary and non-hereditary deaf children there was no significant difference in terms of frequency of different levels of speech perecption and mean percentage of two-syllable-word perception(the median of speech perception level in both hereditary and non-hereditary deaf children was the discrimination of some speech sounds without lip-reading). Also, the frequency of different levels of speech intelligibility(the median of speech intelligibility level) in both hereditary and non-hereditary deaf children was intelligible speech if someone concentrates. There was not any significant difference between speech perception or intelligibility and the mean perception scores of 2-syllable words in hereditary and non-hereditary deaf prelingual profound patients. Being hereditary or non-hereditary subject is not a helping factor to choose condidates for cochlear implantations.

Nasal polyp is a common finding in patients referring to ENT specialists. Also, some specialists believe that there are patients with nasal polyp and some evidence of fungi. The present study was undertaken to describe coincidence of nasal polyp and fungi in patients referred to ENT ward of Rasoul-e-Akram Hospital in Tehran. Patients & 118 patients with nasal polyp(62.7% male and 37.3% female mean age 35 years, ranged 12-70) were investigated in a cross-sectional study. 52.5% of the patients had high total serum IgE level. Direct examination and culture for fungi was positive in 32.5% and negative 36.4% of the patients. The most common isolated fungus was aspergillus(50.9%). Other fungi were candida(34.5%), penicillium (7.3%), alternaria (5.5%) and curvularia (1.8%). Mean age of patients with fungal infection was higher than patients with negative fungal culture result (40y vs. 35y P=0.06). Patients with high serum IgE level were more infected with fungi (49% vs. 14% P<0.001). Results showed that in nasal polyposis, a special attention must be paid to patients with high serum IgE and fungal infection.However, most of our patients had chronic sinusitis as well as polyps in their medical history which may affect our results. Therefore, further studies on patients suffering from nasal polyps and those cases with fungal sinusitis is suggested.

Invasive fungal sinusitis is an opportunistic infection by aspergilosis and mucoracae, but mucoracae is more common than aspergilosis. Mucormycosis is an acute opportunistic fungal infection mostly seen with an underlying disease. It has different clinical presentations such as rhinocerebral and orbital involvement, which are very aggressive and with high mortality rate. There is no obvious protocol for treatment of invasive fungal sinustis. Due to having lots of these patients it was decided to write a protocol for management and treatment. Patients & In this retrospective case series study, 21 patients who directly came or referred to this center were studied. As soon as taking a biopsy and after documentation and confirmation of pathology proper protocol was selected. The most common site of involvement is nasal and orbit(52.4%) and then involvement of nasal cavity orbit and brain(38.1%) and involvement of nasal cavity alone(9.5%). There were 14 male(66.7%) & 7 female(33.3%). Out of these patients 19 had underlying disease including diabetes(10 cases), diabetes & renal failure(4 cases), ALL(2), end stage renal failure(1 case), SLE with ESRD(1 case) and CML in one case. Twelve patients were alive and 9 patients died. Those with nasal involvement alone were all alive. Of patients with sinonasal involvement only one patient died and those with sinonasal and brain involvement were dead. Treatment consists of early diagnosis, treatment of the underlying disease, debridement and medical therapy. Surgical protocol based on extension of disease consists of 3 groups: A: Surgical management in patients with sinonasal involvement is complete debridment of nasal and sinus. B: In patients with orbit involvement orbital exenteration is added. C: With involvement of brain, prognosis is poor and surgical and medical therapy can not affect the survival.

Foreign body aspiration to airways occurs in children under the age of 15 and the maximum incidence is in the 1-3 age range. Using general anesthesia or sedation would enable us to remove the foreign body in the operation room. Here is a case report of a 4-year-old child in whom a retained broken suture needle was found by radiography in the parapharyngeal area after tonsillectomy and adenoeedectomy. Using general anesthesia, the needle was removed under fluoroscopy after 4.5 hours.

Mucormycosis is the most threatening systemic mycotic disease, which occurs in case of underlying diseases such as, diabetes and immune difficiency and followed by high rate of mortality if not diagnosed in time and treated properly. Treatment of this disease starts with treatment of underlying disease, administration of amphothericin B and surgical debridment. The sooner the surgical intervention the more obvious improvement in prognosis.

Within the nine patients with diagnosis of mucormycosis that were under treatment in this center, all have an underlying disease such as diabetes or immunedeficiency. In the onest of disease, they often had symptoms of common cold, sinusitis then gradually blindness, proptosis, 5th and 7th carnial nerves paralyis, confusion and coma developed. Treatment consists of antifungal therapy with amphoteriecin B and surgical interventien by exentration and sinus debridment. Management should be done as soon as possible.