Hamedan Province Research Articles

3D modeling of a shallow polymetallic ore deposit using 3D inversion of magnetic, electrical resistivity and induced polarization data: a case study from Nahavand, Hamedan Province, Iran

3D modeling of a shallow polymetallic ore deposit using 3D inversion of magnetic, electrical resistivity and induced polarization data: a case study from Nahavand, Hamedan Province, Iran

Prognostic value of serum amyloid A protein as a biomarker in the diagnosis of 2019 novel coronavirus disease (COVID-19)

BackgroundThe current study aimed to evaluate the prognostic value of serum amyloid A protein )SAA( protein as a biomarker in diagnosing 2019 novel coronavirus disease )COVID-19( infection. MethodsThe study was conducted on 123 patients with definitive COVID-19 infection referred to Shahid Beheshti and Sina hospitals in Hamedan province, Iran. Five-milliliter blood samples were taken from all included patients and serum was isolated using a centrifuge at 10,000 rpm for 10 minutes. Laboratory tests were conducted, including c-reactive protein (CRP), Erythrocyte Sedimentation Rate (ESR), potassium level, sodium blood test, platelets (PLT), complete blood count (CBC), lymphocyte count, and neutrophil count. The SAA enzyme-linked immunosorbent assay (ELISA) Kit was applied to measure the SAA level in serum samples. Results123 patients included 73 males and 50 females, age ±50. Sixty-six (53.7%) patients had negative CRP while 80 (65%) patients had normal ESR. Potassium levels were not normal among 111 (94.9%) patients. Seventy-seven (63.1%) patients had normal CBC, while 108 (87.8%) patients had neutrophils above the normal range. 94 (97.9%) patients over the age of 50 were positive for SAA. In terms of gender, men were the most frequent patients with SAA. There was a statistically significant relationship between the serum level of SAA and outcomes of patients with COVID-19 (p = 0.0001). 94% of patients with SAA ≤50 were recovered from COVID-19 infection. The sensitivity rate of SAA compared to polymerase chain reaction (PCR) and computed tomography scan (CT scan) tests was 93% and 99%, respectively. Moreover, the accuracy of SAA compared to PCR and CT scan tests was 52% and 96%, respectively. ConclusionResults indicate the SAA is a sensitive, but not specific biomarker in the early detection of COVID-19. The quantitative levels of SAA can be useful in predicting treatment outcomes among patients with COVID-19.

The trend of occupational injuries mortality and Disability Adjusted Life Years (DALYs) in Hamadan Province between 1990 and 2021

Background and Objectives: Occupational injuries are considered as one of the most important health, social and economic risk factors in industrial and developing societies. Therefore, the aim of the present study was to investigate the trend of mortality and Disability Adjusted Life Years rates due to occupational injuries in Hamedan province during 1990 to 2021. Methods: In this cross-sectional descriptive study, the trend of changes in the mortality and Disability Adjusted Life Years rates due to occupational injuries in Hamedan province in a period of 32 years was investigated using join point regression and Join Point Regression software version 5.1.0. Results: The Disability Adjusted Life Years (due to premature death and disability) from occupational injuries in Hamedan province decreased from 496.75 years per thousand population in 1990 to 229.98 years per thousand population in 2021 (the average annual percent changes (AAPC) was -2.40%). This decreasing trend in DALY caused by occupational injuries was also evident in men and women (the AAPC in men and women was -2.40% and -1.10%, respectively).On the other hand, the mortality rate due to injuries in both sexes had decreased from 7.55 cases per 100,000 population in 1990 to 3.46 cases per 100,000 population in 2021 (AAPC was -2.50%). Conclusion: Generally, the trend of mortality and Disability Adjusted Life Years rates due to occupational injuries in Hamedan province had a decreasing trend, which was consistent with other studies conducted in Iran and the world.

Factors affecting small farm resilience to climate change in Hamedan Province, Iran: a structural model analysis

Factors affecting small farm resilience to climate change in Hamedan Province, Iran: a structural model analysis

Knowledge management in dealing with the crisis of the COVID-19 pandemic: Review, evaluation and improvement strategies

Knowledge is a strategic and valuable resource for reducing risk and damages and increasing resilience against disasters. More knowledge and a deeper understanding of COVID-19 might affect how we react to this disease and other pandemics in the future. Therefore, the successful and extensive implementation of knowledge management and paying attention to all related processes will help us in managing and dealing with such crises. This study's goal is to look into and assess how knowledge management is being used in dealing with the crisis of the COVID-19 epidemic in Iran and to propose strategies to improve it. This study is based on the performance of the health sector of Hamedan province, and it was conducted using three methods such as SWOT analysis, focus group (FG), and quantitative strategic planning matrix (QSPM). The results show that the most important strategies for improving the role of knowledge management in dealing with crises such as COVID-19 are the creation of organizational units in charge of implementing knowledge management in various health and treatment sectors, recognition and appreciation of effective and outstanding people in dealing with COVID-19 and increasing the commitment of senior managers to support the implementation of knowledge management. The important thing to mention in this connection is to pay attention to all knowledge management processes and attract the participation of all members of society in dealing with the COVID-19 crisis.

Fuzzy MCDA and GIS application to sitting landfill with emphasis on wind properties and fuzzy operators’ comparison in the Gharehchai basin, Hamedan province, Iran

Fuzzy MCDA and GIS application to sitting landfill with emphasis on wind properties and fuzzy operators’ comparison in the Gharehchai basin, Hamedan province, Iran

Characterization of pectolytic bacteria causing soft rot on sugar beet in the west of Iran

AbstractBacterial soft rots are amongst the most economically important diseases that cause significant yield losses in various crops. A clear identification of the causal agents is required to develop management strategies. In 2022 and 2023, after the widespread occurrence of soft rot disease in sugar beet fields in the Firuzan region, Hamedan Province, Iran, the current study was conducted to identify and characterize the causal agents. A total of 38 bacterial isolates were obtained from sugar beet plants with soft rot symptoms and subjected to biochemical and phenotypical characterization and pathogenicity tests on healthy slices from potato tubers and sugar beet taproots. Twelve isolates from this study along with the type strain Pectobacterium carotovorum ICMP 5702 were selected for subsequent screening by BOX‐PCR. Six isolates were chosen for sequencing the 16SrRNA gene and phylogenetic analysis. In BLAST analyses, the pathogenic isolates S2, S9, S22, S11, S23 and 111 showed the highest similarity values (≥99%) with the reference sequences of Raoultella terrigena, Klebsiella michiganensis, Erwinia (Winslowiella) iniecta, Pantoea agglomerans and P. carotovorum, respectively. These isolates induced soft rot and maceration on plant materials from five species (bell pepper fruits, garlic cloves and slices from sugar beet taproot, potato tubers and carrot roots) 72 h after inoculation. In the greenhouse experiment, they caused soft rot symptoms in the taproots of 2‐month‐old sugar beet plants 3 weeks after inoculation. These soft rot agents had Gram‐negative, catalase‐positive and oxidase‐negative reactions, grew under both aerobic and anaerobic conditions, tolerated and grew at 37°C and 5% NaCl. In general, the results of this research showed that in addition to Pectobacterium, four other genera from the order Enterobacterales including Erwinia, Pantoea, Klebsiella and Raoultella, are amongst the causes of soft rot in sugar beet in Firuzan region of Hamedan.

A new Drusinae (Trichoptera: Limnephilidae) species from the Zagros Mountains in the Kurdistan Province, Iran.

A new species of the Drusinae subfamily, Drusus chelchamaensis Ibrahimi & Mohammadi sp. nov., is described based on male genital morphology. The male of the new species is most similar to that of Drusus bayburtii akin 1983 (known from several places in Anatolia, Turkey), Drusus ketes Olh & Mey 2017 (in Olh et al. 2017) (known from the Hamedan Province, Iran), and Drusus kazanciae akin 1983 (known from the Hakkari Province, Turkey) and differs in the formation of superior appendages, intermediate appendages, inferior appendages, parameres, spinate area of segment VIII, and segment IX. The species is currently known only from Chel Chama Mountain in the Kurdistan Province of Iran and is the second known species of the Drusus caucasicus Species Complex from Iran. Chel Chama is part of the Zagros Mountains, which is rich in freshwater ecosystems, but currently with only a few reported species of caddisflies.

Investigation of the microbial quality of food products, cosmetics, industrial effluents and hospital wastes in Hamedan province

Investigation of the microbial quality of food products, cosmetics, industrial effluents and hospital wastes in Hamedan province

COVID-19 Vaccination and Women's Menstrual Cycle: A Cross-sectional Study Performed

Background: After widespread vaccination against COVID-19, a number of unknown complications were reported, including changes in the menstrual cycle. Objectives: Considering the limited information available on this subject, this study was carried out with the aim of studying the prevalence of menstrual disorders in women following COVID-19 vaccination. Methods: This cross-sectional study was performed in 2022 on 400 women of reproductive age who had received at least 2 doses of the COVID-19 vaccines. The participants were chosen from health centers in the city of Asadabad of Hamedan Province in Iran using the convenience sampling method. The research tool was a researcher-made questionnaire that investigated demographics and changes in the menstrual cycle. Data analysis was carried out using descriptive statistics (frequency and percentage) and inferential statistics (chi-square and Fisher's exact tests). Results: The findings showed that 36.3, 42.5, and 48.01% of the participants experienced menstrual disorders after the first, second, and third doses of vaccination, respectively. Significant relationships were observed between the number of vaccination doses and menstrual disorders (P ≤ 0.001). Furthermore, there were correlations between menstrual disorders and the type of administered vaccine in the first (P = 0.003) and third (P ≤ 0.001) doses. Conclusions: In this study, a number of menstrual complications were observed in women after the administration of the COVID-19 vaccine, and such complications were intensified by an increase in the number of vaccines administered. Since this study was cross-sectional, it cannot be said with certainty whether the administration of the COVID-19 vaccine results in menstrual disorders or not. For this purpose, there is a need for more case-control or prospective studies.

Spatial assessment of biodiversity and conservation priorities in Hamedan Province, Iran, using a landscape ecology approach

Spatial assessment of biodiversity and conservation priorities in Hamedan Province, Iran, using a landscape ecology approach

Assessment of water quality for mountainous high-elevated spring waters using self-organized maps

It is crucial to continuously evaluate the chemistry and quality of spring waters due to human activity, climate change, and environmental contamination in high-elevated areas. A total of 58 spring waters were collected from high-elevated areas in the Hamedan province, Iran. Different spring waters were divided into 4 clusters using the self-organizing map (SOM) and K-means clustering approach. The results from SOM indicated that the electrical conductivity (EC), magnesium (Mg2+), sodium (Na+), and potassium (K+) displayed relatively similar patterns, while the distribution patterns of pH, nitrate (NO3−), and phosphorus (P) were completely different from other variables. Factor analysis supported this conclusion as well, indicating that while pH, NO3−, and P were the results of human activity, the main cations and anions came from parent rocks. The weighted arithmetic water quality index (WQI) was also calculated based on measured parameters and spring waters were primarily categorized as excellent water. Every cation was predominantly found on its free ion species. The saturation indices for all minerals were negative, indicating the dissolution of all minerals. It was concluded that the characterization of spring waters is substantially influenced by the geological nature of the aquifer rocks. Also, the background levels of NO3− and P have been identified as ecological goal levels for spring water resource management in high-elevated areas.

Catechol-type siderophore producer Streptomyces spp. with quorum-quenching activity isolated from wild medicinal plants rhizosphere

Traditional medicinal plants represent a unique source for the isolation of Streptomycetes and antimicrobial compounds. Antimicrobial activity of Streptomyces isolates collected from the rhizosphere of different native medicinal plants in Iran, was investigated against Gram-positive and Gram-negative bacteria. Multi-omics analysis was performed to identify active compounds corresponding to the observed bioactivities. Since cell-to-cell communication mediated by N-acyl homoserine lactones (AHLs) is important for the virulence of Gram-negative pathogenic bacteria, quorum quenching activity of the isolates and their ability to degrade C6-HSL and C8-HSL were tested. Two highly related Streptomyces isolates derived from the Helichrysum rubicundum and Rumex acetosa rhizosphere, respectively, exhibited bioactivity against pathogenic indicator bacteria. Metabolite analysis of extracts obtained from liquid cultures of both isolates revealed the production of the catechol-peptide siderophores streptobactin and tribenarthin. Proteomic analysis confirmed the presence of proteins encoded by the streptobactin and lidamycin biosynthetic gene clusters. Quorum quenching activity of the strains and AHL-degrading enzyme production was confirmed using a GFP producing biosensor and LC-MS analysis. This study demonstrates catecholate siderophore production and QQ potential of two Streptomyces isolates from medicinal plants rhizosphere from Mishan Plain, Hamedan Province, Iran using metabolomics and proteomics analysis. Production of streptobactin by terrestrial Streptomyces sp. strains was confirmed for the first time.

Qualitative modeling of groundwater resources using Artificial Neural Network and Gray Wolf Optimizer algorithm (Case Study: Kabudarahang Plain, Hamedan Province, Iran)

Qualitative modeling of groundwater resources using Artificial Neural Network and Gray Wolf Optimizer algorithm (Case Study: Kabudarahang Plain, Hamedan Province, Iran)

An Economic Evaluation of the Rural Drinking Water Fee Using the System Dynamics Method

In this research, the system dynamics method was applied to investigate the effect of technical and economic parameters on the water fee and provide a solution to find the actual price of water. To assess the performance of the simulated model, the financial balance and explanatory notes of the Rural Water and Wastewater Company of Hamedan province were used from 2011 to 2016. Comparing the simulation results and observational data, the correlation coefficient and normalized root mean square error indexes were obtained at 0.99% and 4%, respectively. The results indicated that despite raising the water fee in recent years, the company’s financial balance was negative, the balance diagram further declined over time, and the company losses increased. Sensitivity analysis showed that the fund balance of the company was more water fee-sensitive and its sensitivity to the time had an increasing trend. However, an increase in the water fee has no remarkable effect on the customer’s willingness to pay for the water. In addition, Powell’s optimization algorithm suggested the lowest water fee to prevent a negative fund balance in the company.

Changing potato farmers’ behavior against only the chemical fertilizers to promote sustainable agricultural practice in Hamedan Province, Iran

Changing potato farmers’ behavior against only the chemical fertilizers to promote sustainable agricultural practice in Hamedan Province, Iran

Prevalence of Campylobacter spp. Among Broiler Carcasses at Industrial Slaughterhouses in Hamedan, Iran

Background & Aims: Today, food-borne diseases are known as one of the most important public health concerns in many countries. Campylobacter is one of the most prevalent food-borne pathogens. Raw chicken meat has been reported as the main source of human campylobacteriosis. The present study was conducted to investigate the prevalence of Campylobacter species among broiler carcasses at industrial slaughterhouses in Hamedan province, west of Iran. Materials and Methods: Totally, 100 samples were collected using sterile swabs from chicken skin at the post-scalding stage. The samples were enriched in Brucella broth containing Campylobacter selective supplement and incubated at 42º C for 48-72 hours under microaerophilic conditions. The molecular detection and identification of Campylobacter species were performed by the polymerase chain reaction (PCR) using cadF and Hip primers for detecting Campylobacter species and Campylobacter jejuni, respectively. Results: The results of this study revealed that 81% and 31% of broiler carcasses were positive for the presence of Campylobacter species and C. jejuni, respectively. Conclusion: Due to the high contamination rate of chicken meat with this pathogen, precise hygienic control of poultry meat and an increase in consumer awareness seem necessary to decrease human campylobacteriosis.

Ecological potential evaluation of cold-water fish culture for reducing the environmental impact: Case study, Hamedan province, west of Iran

Ecological potential evaluation of cold-water fish culture for reducing the environmental impact: Case study, Hamedan province, west of Iran

New insights into the chemical composition of essential oils from Phlomis olivieri Benth. shoots

Essential oils from Phlomis olivieri Benth. shoots were phytochemically investigated in order to identify new chemotypes of this plant. The essential oils were obtained by hydrodistillation and analyzed by gas chromatography coupled to mass spectrometry. A quantitative variation in constituents was estimated in essential oils from samples collected in 11 different regions of Hamedan province. The major constituents of the essential oil were the sesquiterpenes germacrene D, (E)-β-caryophyllene and (E)-β-farnesene. Germacrene D ranged from 5.3% to 36.9%, (E)-β-caryophyllene ranged from 6.3% to 61.9%, and (E)-β-farnesene ranged from 5.1% to 18.4%, suggesting the occurrence of three chemotypes.

Determining the Relationship between Stress Management and the Level of Perceived Job Stress and the Quality of Services Provided by Midwives Working in the Maternity Department of Hospitals in Hamedan Province in 2022

Background and Objective: One of the important problems of midwifery is high job stress and its consequences. Having the ability to manage stress is one of the basic requirements of this profession that can reduce midwifery mistakes in the workplace. Although job stress exists in all jobs, midwives face higher levels of stress due to the nature of their job, and this issue can lead to a decrease in service quality. The present study was conducted to determine the relationship of stress management with the level of perceived job stress and the quality of services provided by midwives working in the maternity department of hospitals in Hamedan province, Iran. Materials and Methods: The statistical population of this descriptive cross-sectional study consisted of 210 midwives working in hospitals with obstetrics and gynecology departments in Hamedan province. The random sampling method was used to select the samples. The required data for this study were collected using a demographic information form, Cobin's Stress Management Questionnaire, Hospital Stress Scale, and Maternity Care Quality in Maternity Unit Scale. Data were analyzed in Stata-13 software using Kolmogorov-Smirnov statistical tests and multivariate linear regression. The significance level was considered less than 0.05. Results: The findings showed that 81.4% of midwives had a high level of stress management ability. Moreover, 65.7% of midwives perceived moderate-level job stress, and 79% of midwives provided good quality services in the delivery room. Based on the results, was a moderate and inverse relationship between stress management and perceived job stress (beta=-0.47), and a moderate and direct relationship between stress management and the quality of provided services (beta=0.56). It was also found that perceived job stress had a weak and inverse relationship with the quality of provided services (beta=-0.25). Conclusion: The results revealed that having the ability to manage stress and control job stress could improve the quality of services provided by midwives. It is necessary for midwife managers to improve the process of providing quality services by holding stress management workshops.