18 research outputs found
Bibliometric Analysis of the Journal of Hospital Librarianship
The Journal of Hospital Librarianship is the most influential journal in the field of hospital libraries. This study, using bibliometric and visualization methods, provides a comprehensive analysis of the Journal of Hospital Librarianship. The results of the bibliometrics indicated that the citation received by papers was ascending, and the average citation for each document was 1.06. Helen-Ann Brown Epstein with 26 documents, is the most prolific author. About 86 percent of the documents were published by authors from the United States. The LSU Health Sciences Center, with 14 documents, is the most active institution. The article entitled "Gray literature: Its emerging importance" is considered the most highly cited article in the journal receiving 79 citations. Visualizing and clustering the important terms in the title and the keywords of the articles using the VOSviewer software suggests that these terms form seven clusters. Hospital library, information need, and hospital librarian were the most important terms in the title of the articles, and hospital libraries, libraries and internet were the most important keywords. In addition, visualizing the abstract of the articles showed that "hospital libraries", "survey research", "health information," and "evidence-based medicine" are the main four clusters of articles. The publishing trends in this journal have been accompanied by ups and downs and the United States has been one of the main countries contributed to this journal. The results of this study can be a road map for researchers and editors of this journal
Effectiveness of Narrative Exposure Therapy on the Severity of Posttraumatic Stress and the Co-Morbid Symptoms of Iranian Survivors of Mina Disaster
Background: Mass gathering has not received much attention of researches as one of the potentially traumatic events in the field of psychological studies. Mina (Mecca, Saudi Arabia) disaster during 2015 hajj occurred in this context. Individuals may be at risk for posttraumatic stress disorder (PTSD), depression and somatic symptoms following traumatic events. Narrative exposure therapy (NET (has been known as a therapeutic protocol for PTSD and trauma-related disorders. The present study was carried out aimed to investigate the effectiveness of narrative exposure therapy on the severity of posttraumatic stress symptoms and the co-morbid symptoms of Iranian survivors of Mina disaster.Materials and Methods: The present study is based on single-case experimental design (SCED) with baseline. Eight Survivors of Mina disaster who met the criteria for posttraumatic stress disorder and completed inclusion criteria were randomly divided into two groups NET and control. The experimental group participant received twelve NET sessions individually. Data collection tool included PTSD Checklist for DSM-5 (PCL-5) and Beck depression inventory-II (BDI-II), patient health questionnaire 15 (PHQ-15). Data was analyzed using the cut-off point, percentage improvement index, RCI and the Hedges' g effect size.Results: Total percentage improvement of participant receiving NET for PTSD, was 68.25%, depression 63.25%, and somatic symptoms was 53.75%. All changes in the participant receiving NET were clinically significant in severity of PTSD, depression and somatic symptoms (RCI≥1.96).Conclusion: According to the results of this study, NET has a significant effect on the reduction of PTSD symptoms and its co-morbid symptoms
Lack of Pathogenic Mutation in the Human CAII Gene in an Individual Suffering Renal Tubular Acidosis
Renal tubular acidosis (RTA) is a rare genetic disorder. It has four clinical types, and type 3 demonstrates a mixed pattern of tubular dysfunction. The causative gene for type 3 RTA (CAII) is located on the 8q22 locus and encodes a protein called carbonic anhydrase II. In this study, we analyzed the entire exons and flanking regions of the CAII gene in a child suffering renal tubular acidosis with an autosomal recessive pattern that was diagnosed with type3 RTA. DNA was extracted from the blood sample of the patient and his parents by the salting out extraction method. The exons and flanking regions of the CAII gene were amplified using polymerase chain reaction (PCR). We performed exon direct sequencing by forward and reverse primers, which were designed by primer3 program. No mutation was found following the screening of the entire coding sequence of the CAII gene. It is likely that another gene might be involved in this case. In other words, other types of RTA have to be considered.Keywords: Renal Tubular Acidosis, distal, type 3; Gene; Polymerase Chain Reaction; Sequence Analysis, DNA
Prevalence of obsessive-compulsive disorder in Iran
BACKGROUND: Estimates of the annual prevalence for Obsessive Compulsive Disorder (OCD) were consistent across the international sites range, 1.9% – 2.5%. The nine population surveys, which used Diagnostic Interview Schedule, estimated a six-month prevalence of OCD ranging from 0.7% to 2.1%. This study performed in order to determine the prevalence of OCD in a population-based study among Iranian adults aged 18 and older and to study the association of them with factors such as sex, marital status, education, type of occupation and residential area. METHODS: A cross-sectional nationwide epidemiological study of the Iranian population aged 18 and older was designed to estimate the prevalence of psychiatric disorders and their association with the above mentioned factors. 25180 individuals were selected and interviewed through a randomized systematic and cluster sampling method from all Iranian households. Schedule for Affective Disorders and Schizophrenia (SADS) and Diagnostic and Statistical Manual of Mental Disorders-IV (DSM-IV) criteria were used in diagnosis of OCD. 250 clinical psychologists interviewed the selected subjects face to face at their homes. RESULTS: The prevalence of OCD in Iran is 1.8% (0.7% and 2.8% in males and females; respectively). 50.3% of the survey sample were men, 49.9% women, 29.1% single, 67.45% married, 0.4% separated or divorced, 2.5% widow/widower and 4% undetermined. All of the above-mentioned factors were examined in the univariate and multivariate logistic regression models. Although the data did not fit the models well, but in univariate models, sex, the category "single" of marital status, age, the categories "business" and "housewife" and residential areas showed significant effect adjusting for the factors, but the models didn't fit the data properly. CONCLUSION: The study suggests that the prevalence of OCD is not rare in the community of Iran and is within the range of other countries. Similar to prior studies in other communities, OCD is more common in females than males
Comparison Outcome of Nerve Regeneration across an Eggshell Membrane Guidance Channel and Autograft
Background: Peripheral nerves may be damaged during an injury and its current standard treatment is using an autologous nerve.
Objectives: The purpose of this experimental study is to evaluate and compare the histological results of nerve regeneration after using the eggshell membrane (ESM) guidance channel with autograft.
Materials and Methods: Thirty adult male rats were divided into three experimental groups: ESM guidance channel, autograft, and sham surgery. The decalcifying membrane of egg rotated over the Teflon mandrel and dried at 37°C. A 10 mm nerve segment of left sciatic nerve was cut and removed. In ESM group, the ends of the sciatic nerve were telescoped into the nerve guides. In autograft group, the nerve segment was reversed and used as an autologous nerve graft. At 90 days after surgery, all animals were evaluated by histological and immunohistochemical assessment.
Results: The diameters of regenerated myelinated fibers were 5.24±2.14 µm for the ESM group, and 5.89±2.99 µm for the autograft group. The number of myelinated axons regenerated in the ESM group (9824±218 nerve fibers) was significantly greater than autograft group (7865±314 nerve fibers) (p<0.05).
Conclusion: These findings demonstrate that ESM effectively enhances nerve regeneration in injured rat sciatic nerve
Effects of different plant densities, fertilization rates and furrowing on foraged soybean production
A field experiment carried out at the research farm, Gorgan University of Agricultural Sciences and Natural Resources, Iran, in 2013. The main objective of the present study was to determine the effect of plant densities, fertilization rates and furrowing on yield and some morphological characteristics of soybean. The other objective of this study was, if pod packaging phenomena did not happen; can be used from morphologic advantages of this plant as replacement strategy and as foraged soybean or not. Therefore, an experimental design laid out in a randomized complete block design arranged in a split plot factorial with three replications. The main plots attributed to planting density at three levels (100000, 150000 and 200000 bush ha-1). The sub plots attributed to fertilization rate, Urea 46% at three levels (100, 200 and 300 kg ha-1). The sub-sub plots attributed to land aeration (creating gutter and hillock with furrower) between the rows, during crop protection at two levels (furrowed and non-furrowed only as control). The results showed that with increasing number of plants per plot; dry matter weight and plant height increased to 508.7 kg ha-1 and 68.8 cm, respectively. However, stem diameter, number of leaf and number of branch decreased to 5.79 mm, 37.1, and 6.4, respectively. Fertilization rate, furrowing and interaction of plant density × fertilizer rate × furrowing showed dry matter weight, stem diameter, number of leaf, plant height and number of branch were highest with increasing plant density. The urea fertilizer (46%) and furrowing between the rows indicated that the quantity increase for triple interaction for the afore-mentioned traits were 631.6 kg ha-1, 12 mm, 73, 78.7 cm and 10.33, respectively. Overall findings demonstrated that using fertilizer and furrowing between the foraged soybeans rows may create more bushes efficient via absorption of urea followed by furrowing. Therefore, that it caused the greater morphological yield
Spatial and temporal evaluation of global rainfall products in a data-scarce region: The Dez Basin, Iran
The limitation in approachability to rainfall data sources with an appropriate spatial-temporal distribution is a significant challenge in different parts of the world. The development of general circulation models and mathematical algorithms has led to the generation of various rainfall products as new sources with the potential to overcome the shortage in datascarce basins. In this study, the performance of the PERSIANN-CCS and CMORPH satellite-based rainfall product, as well as the ERA5 and ERA-Interim reanalysis, was evaluated based on detection skill and quantitative metrics in a daily, monthly and seasonal time scales in the Dez basin located in the southwest of Iran. The basin has a wide topographic variation and scattered rain gauge stations. Overall results denote that the ERA5 dataset has the best performance in all statistic verification than other rainfall products. Based on the daily evaluation of all rainfall products, the false alarm rate (FAR) is higher than 0.5, so none of the datasets could capture the temporal variability of rainfall occurrence. This study has covered the western parts of the Zagros steep slopes in which the topographic conditions have a significant effect on the activity of rainfall systems. On a monthly scale, the mean value of the correlation coefficient (CC) for ERA5, ERA-Interim, PER-SIANN-CCS, and CMORPH was equal to 0.86, 0.85, 0.51, 0.39, respectively. The results of seasonal evaluation suggested that all datasets have better rainfall estimation in autumn and winter, and the capability of all datasets dramatically decreased in the spring. The current paper argues that the ERA5 reanalysis typically outperforms ERA-Interim and can be considered as a reliable rainfall source in the future hydrological investigation in the southwest of Iran
Non-criticality of interaction network over system's crises: A percolation analysis
Extraction of interaction networks from multi-variate time-series is one of the topics of broad interest in complex systems. Although this method has a wide range of applications, most of the previous analyses have focused on the pairwise relations. Here we establish the potential of such a method to elicit aggregated behavior of the system by making a connection with the concepts from percolation theory. We study the dynamical interaction networks of a financial market extracted from the correlation network of indices, and build a weighted network. In correspondence with the percolation model, we find that away from financial crises the interaction network behaves like a critical random network of Erdos-Renyi, while close to a financial crisis, our model deviates from the critical random network and behaves differently at different size scales. We perform further analysis to clarify that our observation is not a simple consequence of the growth in correlations over the crises
Electro-facies classification based on core and well-log data
Abstract Facies studies represent a key element of reservoir characterization. In practice, this can be done by making use of core and petrophysical data. The high cost and difficulties of drilling and coring operations coupled with the time-intensive nature of core studies have led researchers toward using well-log data as an alternative. In the Teapot Dome Oilfield, where core data are limited to those from only a single well, we used well-log data for reservoir electro-facies (EF) studies via two unsupervised clustering methods, namely multi-resolution graph-based clustering (MRGC) and self-organizing map (SOM). Satisfactory results were obtained with both methods, distinguishing seven electro-facies from one another, where MRGC had the highest discriminatory accuracy. The best reservoir quality was exhibited by electro-facies 1, as per both methods. Our findings can be used to avoid some time-intensive steps of conventional reservoir characterization approaches and are useful for prospect modeling and well location proposal
Cytotoxic and Oxidative Stress Caused by Cadmium and Lead on Human Skin Fibroblast Cells
Introduction: Heavy metals are important occupational andenvironmental pollutants that cause damage to various organs.Although there is no effective therapy for such a poisoning,metallothionein has been shown to play a key role in thedetoxification of cadmium (Cd). Evidence in the literature suggeststhat superoxide dismutase, glutathione peroxidase, and catalaseconstitute important defense mechanisms against oxygen toxicity inthe cells. The aim of this study was to investigate the effect ofcadmium chloride and Pb-acetate on antioxidant enzymes in thehuman skin fibroblast cells (HF2FF).Material and Methods: The human skin fibroblast (HF2FF) cellswere incubated in serum-free medium containing 20 μM CdCl2 for18 hr three times a week. The same exposure to an equimolar doseof Pb-acetate was performed. After each exposure and after threetimes exposure the cells were collected and cell viability, thecontents of superoxide dismutase (SOD), catalase, glutathioneperoxidase (GSH-Px), GSH and malondialdehyde (MDA) weremeasured.Results: Cd caused cytotoxicity and inhibition of glutathioneperoxidase (GSH-Px) and SOD activity, as well as depletion of thereduced form of glutathione (GSH) in the cell. The level of lipidperoxidation (LP) was increased, but catalase activity was notsignificantly altered. These defects were increased with repeatedexposures. The same exposure to an equimolar dose of Pb-acetateevoked only inhibition of GSH-Px and SOD. The values of GSH,catalase and LP activity remained unchanged.Conclusion: The inhibition of GSH-Px and SOD may be consideredas an important biomarker of the toxic effect of metals