فهرست مطالب mehdi khani

Spatial analysis of such crimes can provide a clear geographical perspective for planning and policing management in the protection territoriesof urban areas. The main goal of the current research is the spatial analysis of theft crimes in Esfarayen city.

This inqury in terms of purpose, is of the type of applied research, and in terms of methodological approach, it is based on description and spatial analysis. The area under study is the city of Esfarayen, located in North Khorasan province. The data used includes 945 cases of theft crimes in a one-year period, from 21-3-2021 to 3-3-2022, which were received from the police force command of Esfarayen city. Excel and ArcGIS software were used for data analysis.

Most of the shop thefts are related to the central core of the city (ImamKhomeini and Motahari Streets). In terms of car theft, the most thefts in the central core of the city are (Taleghani, ImamReza, ImamKhomeini, Motahari, Farumandi, Moalem, and Valiasr streets). Important thefts Most of the houses happened in more prosperous neighborhoods and the theft of private places occurred on ImamKhomeini, Motahari, SheikhAzari, the beginning of ValiAsr and the beginning of ImamReza streets, and the theft of car accessories occurred on ImamKhomeini-ImamReza-Talqani-Moalem and Motahari streets.

according to the findings, the spatial patterns of the formation of theft hot spots in the city of Esfarayen are affected by the decline of economic indicators, social and cultural problems, poverty, Drugs addiction, divorce, unemployment and urban marginalization.

Target: 

Bendopnea, defined as dyspnea while bending, can be observed in patients with heart failure (HF). In this study, we investigated the frequency of this symptom in patients with systolic HF and its association with echocardiographic parameters.

In this study, patients with left ventricular ejection fraction (LVEF) ≤45% and decompensated HF referred to our clinics were prospectively recruited. All patients were examined by cardiologists for collecting data on the presence of bendopnea and baseline characteristics. They also underwent electrocardiographic and echocardiographic examinations. All findings compared between patients with or without bendopnea.

A total of 120 patients with a mean age of 65.19 ± 12.62 years were evaluated, and 74.8% were men. Bendopnea was observed in 44.2% of the patients. The etiology of HF was ischemic in most patients (81.9%), and the functional class of most patients (85.9%) was III or IV. The mortality rate at 6 months follow-up was comparable between patients with or without bendopnea (6% vs. 9.5%, p=0.507). The waist circumference (odds ratio [OR] 1.037, 95% confidence interval [CI] 1.005 – 1.070, p = 0.023), paroxysmal nocturnal dyspnea (OR 0.338, 95% CI 0.132 – 0.866, p = 0.024), and right atrium size (OR 1.084, 95% CI 1.002 – 1.172, p = 0.044) were associated with bendopnea.

Bendopnea can be frequently found among patients with systolic HF. This phenomenon is associated with obesity and baseline symptoms of patients and right atrium size upon echocardiographic examinations. It can help clinicians with the risk stratification of HF patients.

The prediction of the results of introducing a new product into the market is one of the vital issues facing the organization's executives before investing in marketing activities. The impact of various factors on the market, as well as the specific characteristics of the market, depending on the region and its product type, has made it difficult to predict market behavior. In Iran, retailers are effective players, especially in the FMCG market. This paper aims to suggest a model for the marketing managers to predict the result of their new product lunch to market considering their special market attributes. Agent-based modeling, as a tool for modeling complicated systems, can be helpful for simulating real-world conditions. In the present paper, agent-based modeling is used to model the market, including retailers and consumers with particular profit functions, and two producers compete with each to maximize their profit. The introduction of a new soft drink in the Iranian market over three years is considered as a case study. The results of policy implementation were evaluated using the decision support system developed in this study. The user interface of this system has been developed with Matlab software, and its model core with SQL Server. The results show that paying attention to the needs of retailers and consumers simultaneously, and changing policies based on long-term profitability, create success in the new product diffusion process. The analysis of a competitive environment, the role of retailers in the market, and the repeat purchase behavior of consumers are instructive. These can provide valuable points for marketing managers to customize the model to their special market and product.

Due to mismanagement in the field of use, rehabilitation and allocation of water resources, the return and use of local indigenous technologies and knowledge and also their updating, plus localization of modern technologies make it inevitable. Since one of the important elements of planning and management in the field of water resources is to identify the most appropriate criteria or effective factors in it, so in this research with extensive study of internal and external sources in the field of indigenous knowledge and also using the opinion of specialists and experts of Yazd Province, the variables were first identified through Delphi method and then a questionnaire was prepared. Thereafter, the effective variables were examined and evaluated using appropriate methods such as exploratory factor analysis and principal component analysis. The research findings indicate that the six factors of protection and stability, management, holistic, cost-effectiveness, compatibility, and dynamism have been the primary factors and criteria of indigenous knowledge in the management and planning of water resources in Yazd Province. Variables such as biodiversity conservation, proper management, cost-effectiveness, and wildlife conservation have been also more important compared to other variables.

In this research, the effect of gamma irradiation, thyme essential oil (EO) and vacuum packaging treatments on fresh shrimp for a period of 15 days at 4°C during storage was investigated. For this purpose, two concentrations of EO (0.4 and 0.8% v/w) and two doses of radiation (2.5 and 3.5 KGy) were used. Treated shrimps and control sample were subjected to chemical (pH, total volatile basic nitrogen, free fatty acids, peroxide index, thiobarbituric acid reactive substances and color indexes), microbiological (bacteria total count, psychrophilic bacteria and  Escherichia coli) and sensory evaluation and analyses performed on certain days (0, 5, 10 and 15th) of storage. The obtained results showed that pH, FFA, peroxide, TBARS and TVB-N values of all treatments increased in the duration of storage, significantly (p<0.05). Microbial load in all treatments also increased over time. Bacterial growth delayed growing in samples by using of combination of thyme oil, gamma radiation and vacuum packaging. At first, adding thyme EO leds to decrease L* index, but at high concentration of EO (0.8%), color change was decreased significantly (p<0.05). The results of sensory evaluation showed that different treatments had significant effect on sensory parameters of shrimp (p<0.05). Finally, the shrimps treated with combination of vacuum packaging, 0.8% (v/w) EO and 2.5 KGy can be introduced as the best treatment.

Over 50% of the sugar beet fields in Iran are infested by rhizomania and beet cyst nematode diseases. Using resistant varieties is a simple and efficient method of managing these diseases. In 2015, Shokofa was released as the second domestic monogerm variety, resistant to both rhizomania and beet cyst nematode. White sugar yield of this variety under infested field condition was 7.44 tha-1 which was in the same group as foreign control Ludwina (8.28 tha-1) and domestic control Tous (7.32 tha-1). In an experiment conducted in greenhouse, the resistance of Shokofa variety to cyst nematode was evaluated and results showed that the average number of cyst on Shokofa root was 30, while two foreign controls including Pauletta and Sanetta infested with 23 and 26 cysts respectively, and the susceptible control Jolge was infested with 114 cysts. Based on two on-farm experiments conducted in Khoy and Fariman Sugar Factories in 2014, the sugar yield of Shokofa was 9.23 tha-1 that was almost equal to sugar yield of Toukan cultivar (9.47 tha-1), a foreign sugar beet control. However, under rhizomania infected fields in Neishabor and Qazvin Sugar Factories, the sugar yield of Shokofa was 7.17 tha-1 which was higher than all domestic and foreign controls.

The aim of this study was to assess the effect of low-level laser therapy (LLLT) on pain, swelling and maximum mouth opening in patients undergoing third molar surgery.
A prospective, randomized double-blind study was undertaken on 44 patients at the Dental School, Ahvaz Jundishapur University of Medical Sciences, in 2015. A low-level laser was randomly applied on one of the two sides after surgery of 15 patients. The experimental side received 18 J/cm2 of energy density, wavelength of 980 nm, and output power of 1.8 W. On the control side, a hand-piece was applied intra-orally, but laser was not activated. In addition, in order to evaluate trismus, 13 patients were treated by unilateral laser therapy and 16 patients did not receive laser therapy at all. The laser was administered intraorally on two points of vestibular and lingual sides at 1 cm from the surgery site, and extraorally at the emergence of the masseter muscle, immediately after surgery, and repeated 24 hours later. The pain, swelling and maximum mouth opening (MMO) were compared between the two groups at 24 hours and a week after surgery.
The mean score of pain 24 hours after surgery in the laser therapy group (2.3 ± 3.5) was significantly lower than the mean score of pain in the drug therapy (4.19 ± 3.09) (P = 0.036). Moreover, the mean score of pain at one week after surgery in the laser therapy group (0.13 ± 2.33) was significantly lower than the drug therapy group (1.43 ± 2.45) (P = 0.046). The amount of swelling according to different measurements did not significantly differ between the two groups neither at 24 hours nor at 1 week after surgery.
Our findings showed that LLLT was useful in reducing pain and could slightly reduce swelling compared to drug therapy in impacted third molar surgery.

The basic objective of this study was to mediate the relationship between organizational intelligence, knowledge management and organizational effectiveness at Ports and Maritime Organization of Tehran Province. The population of the research were the staff in the PMO of Tehran. 257 employees were selected through random sampling. A questionnaire consisting of 42 questions of knowledge management (Sales and Jones, 2002), with leadership and management, teamwork and learning communities, knowledge sharing, knowledge creation, digital justice, ideas and mission, strategy, culture, intellectual capital, organization learning dimensions (α=0.87) and to measure organizational intelligence, a questionnaire of 49 questions (Albrecht, 2002) and dimensions of strategic vision, shared fate, appetite for change, spirit, unity and agreement, application knowledge and performance pressure (α= 0.90) was used and to assess organizational effectiveness a questionnaire with 28 questions (Parsons, 1979), and the dimensions of (adaptation or innovation), (organizational commitment or target acquisition), (job satisfaction or unity), (organizational health or maintain the pattern) (α=0.83) were used. Processing of the data using structural equation modeling showed that the mediation role of knowledge management in the relationship between organizational intelligence and organizational effectiveness is approved. This means that the emphasis on knowledge management and its compliance from organizations causes the effect of each of the variables of organizational intelligence and organizational effectiveness on the successful implementation of the other in the organization.

Cells and tissues are mainly exposed to different mechanical stimuli, which are essential for their function. Blood vessels are subjected to circumferential straining induced by pulse pressure. The phenotype regulation and function of vascular smooth muscle cells depend on both chemical factors and their mechanical environment. Chemical and mechanical stem cell stimulations can contribute to their differentiation to functional target cells, including smooth muscle cells. This makes a great potential subject for cell therapy and tissue engineering. Here, we evaluated effects of short term uniaxial cyclic strain on morphology of rabbit adipose derived mesenchymal stem cells. Using a custom made bioreactor, a 5% cyclic uniaxial strain with 1Hz frequency were applied on mesenchymal stem cells for 4, 8 and 24 hours. Smooth muscle specific gene expression was analyzed by Real Time PCR. Before and after experiments, cell images were taken and processed for morphological parameters evaluation. Cyclic strain caused cells to re-orient to the direction that cell body were experiencing minimal force. Two fold increases in smooth muscle gene expression was observed after 24 hour mechanical stimulation. Cyclic strain caused morphological alterations including reduction of cell shape index up to 41%, and elevation of aspect ratio up to 45% after 24 hours loading compared to control samples. Cyclic strain caused significant elongation of mesenchymal stem cells close to contractile smooth muscle phenotype. This method can be applied in cardiovascular tissue engineering to provide functional smooth muscle cells.

Chamomile is a native plant in Europe and is famous due to use as a culinary and medicinal. In order to evaluation of agronomic traits and their relationship in different chamomile landraces, 20 landraces collected from different areas of Iran and five European cultivars were planted in an augmented design in Fozveh Station of Isfahan Agriculture Research Center. Several phonological and morphological characteristics were measured. Results showed that flower yield per plant, number of flower per plant and essential oil content had maximum coefficient of variation (CV) and phonological traits, number of ligulate florets, flower diameter and flower height had minimum coefficient of variation (CV). Correlation coefficient of flower yield per plant with yield components e.g. number of flower per plant (0.95**) and number of flowering branches (0.73**) was positive and high. Results of step-wise regression for flower yield per plant showed that number of flower per plant, 100 flower dry weight and number of flowering branches were entered to the model, respectively (R2=0.98). Factor analysis showed that 80.06 percent of data variations were determined by six independent factors. Genetic diversity was considerable among landraces especially for flower yield per plant and yield components.

Detection of herbicides residues, includes a wide range of methods including biosensors, that are used for herbicide residue analysis. Biosensors are systems with small size, very accurate, sensitive, specific and portable that can measure analyte in very low concentrations in biological samples. Today, biosensors are used in various sciences, medicine, chemical industry, food industry, environmental monitoring, and pharmaceutical and health products. Biosensors consist of three components, bioreceptor, detector and processor. The importance of this method is very specific reaction to a particular analyte that thereby is prevented the intervention materials that is caused for inefficiency measured in many ways. These sensors are designed to react only with a specific substance. The result of this reaction is messages that microprocessor can analyze them. Since work on biosensors is based on biological systems embedded in them, so they do not have side effects on other tissues. In recent years with the design of nano-biosensors, the sensitivity of the measurement procedures has increased dramatically.

Salivary gland tumors form a major area in the field of oral pathology. B-cell lymphoma -2 (Bcl-2) is an anti-apoptotic gene with up-regulation in various neoplasms. The aim of the present case-control study was to comparatively investigate the expression of Bcl-2 protein in pleomorphic adenoma (PA) and mucoepidermoid carcinoma (MEC) and assess its potential diagnostic role in differentiating these tumors. A total of 28 cases (18 specimens of PA [control] and 10 blocks of MEC [case]) were selected for analysis by streptavidin-biotin peroxidase method with antibody against Bcl-2. The percentage of positive cells was calculated from a minimum of 1000 neoplastic cells and H-score was identified (% positive cells × intensity of staining). Data were analyzed using two-way ANOVA, t-test, Spearman, Chi-square and Fisher tests (α = 0.05). bcl-2 expression was shown in 13 cases (71%) of PA and 3 cases (30%) of MEC. In addition, four cases of PA showed strong staining. There was a significant difference between the expression intensity of Bcl-2 in the two tumors (P = 0.048) according to ANOVA. No correlation was observed between Bcl-2 expression with the size and location of tumors (P > 0.05). Bcl-2 expression might be used for differentiating these tumors. Bcl-2 protein was overexpressed in PA compared with MEC. Hence, it seems that unlike what was observed in PA, Bcl-2 probably does not participate in the pathogenesis of MEC.

In this study, mechanochemcical process (MCP) is applied to synthesize ultrafine TaC powders. In this research, nanopowder composite TaC-TaB2 was produced using mixtures of tantalum carbide and boron carbide as raw materials, via mechanochemical process. The phase formation characterization during the process was utilized by X-ray diffractometry (XRD). The morphology of synthesized powder was studied using scanning electron microscopy (SEM).

Chamomile is one of the most important medicinal plants in commerce that has many applications in drug and sanitary industries. In order to evaluate the genetic diversity of different scentless chamomile landraces (Matricaria inodora L.) based on morphological traits and molecular markers, 17 landraces were collected from different areas of Iran. In order to evaluate the morphological traits, the landraces were planted in an augmented design in Fozveh station of Agriculture Research Center of Isfahan. Forty-four arbitrary 10, 15 and 18-mer primers were used for PCR amplification of total genomic DNA. Twenty nine primers were selected based on the quality and reliability of their amplification. Genetic similarity between the genotypes was estimated using Jaccard's similarity coefficient and UPGMA method of cluster analysis was conducted on the collected data. Results showed that yield of flower per plant, number of flower per plant, and 1000 grain weight had maximum variance coefficient. Days to end of flowering and Days to flowering had minimum variance coefficient. Genetic similarity coefficient was estimated in a range of 0.20–0.72, with a mean of 0.39. According to the cluster analysis on both morphological and molecular markers, the studied landraces were classified into 5 clusters, but intra-groups landraces were different. Results of cluster analysis showed that genetic diversity was not coordinated to the geographical distribution.

Sclerotinia stem rot (white stem rot), an important fungal disease, which is caused by Sclerotinia sclerotiorum, is one of the serious diseases of various plants such as canola. Use of resistant cultivars is an effective method to control the disease. A greenhouse experiment based on cotyledon inoculation using mycelial suspension of two different isolates of S. sclerotiorum was conducted to evaluate 12 canola cultivars (including seven spring type and five winter type) against the pathogen. The results demonstrated that response to S. sclerotiorum was significantly different among cultivars (P = 0.05). Interaction between isolates and cultivars was also significant (P = 0.05). Hyola 401 with the highest and Zarfam with the lowest infections, were the most susceptible and the most resistant cultivars, respectively. The results of this experiment showed that cotyledon test is a reliable and rapid method for screening canola cultivars against white stem rot fungus.

The AISI 316 L Stainless Steel (SS) specimens were exp osed to passivation surface through two different processes including; holding in 40-vol% HNO3 at temperature o f 60 C for 30 min and 15-vol%H2 SO4 at ambient temperature for 1 hour. The corrosion behavior of specimens was evaluated in physiological solutions by electrochemical in vitro tests through linear and Tafel polarization tests. Cyclic polarization tests were performed for investigating of the sp ecimen’s resistance against pitting. Finally, the corrosion resistance of untreated and modified specimens was compared. The results show that the corrosion resistance of 316 L SS metallic implant is increased due to passivation surface treatment.