47 research outputs found

    A New Approach for Realistic 3D Reconstruction of Planar Surfaces from Laser Scanning Data and Imagery Collected Onboard Modern Low-Cost Aerial Mapping Systems

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    Over the past few years, accurate 3D surface reconstruction using remotely-sensed data has been recognized as a prerequisite for different mapping, modelling, and monitoring applications. To fulfill the needs of these applications, necessary data are generally collected using various digital imaging systems. Among them, laser scanners have been acknowledged as a fast, accurate, and flexible technology for the acquisition of high density 3D spatial data. Despite their quick accessibility, the acquired 3D data using these systems does not provide semantic information about the nature of scanned surfaces. Hence, reliable processing techniques are employed to extract the required information for 3D surface reconstruction. Moreover, the extracted information from laser scanning data cannot be effectively utilized due to the lack of descriptive details. In order to provide a more realistic and accurate perception of the scanned scenes using laser scanning systems, a new approach for 3D reconstruction of planar surfaces is introduced in this paper. This approach aims to improve the interpretability of the extracted planar surfaces from laser scanning data using spectral information from overlapping imagery collected onboard modern low-cost aerial mapping systems, which are widely adopted nowadays. In this approach, the scanned planar surfaces using laser scanning systems are initially extracted through a novel segmentation procedure, and then textured using the acquired overlapping imagery. The implemented texturing technique, which intends to overcome the computational inefficiency of the previously-developed 3D reconstruction techniques, is performed in three steps. In the first step, the visibility of the extracted planar surfaces from laser scanning data within the collected images is investigated and a list of appropriate images for texturing each surface is established. Successively, an occlusion detection procedure is carried out to identify the occluded parts of these surfaces in the field of view of captured images. In the second step, visible/non-occluded parts of the planar surfaces are decomposed into segments that will be textured using individual images. Finally, a rendering procedure is accomplished to texture these parts using available images. Experimental results from overlapping laser scanning data and imagery collected onboard aerial mapping systems verify the feasibility of the proposed approach for efficient realistic 3D surface reconstruction

    Gaps in the provision of spiritual care for terminally ill patients in Islamic societies - a systematic review

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    Background. Islam has a profound concept about death and aftermath. Believing in living after death and resurrection is one of the three main principles of Islam. Since the increasing incidence of people in need of palliative care in developing countries and the fact that Muslims, who dominantly live in developing world, are very dependent on spirituality, describing the ways that spiritual care is described and provided in the Islamic context is highly demanded. This paper aims at delineating original research in this subject in a systematic manner. Method. Several medical databases were reviewed in a systematic manner to investigate original quantitative or qualitative researches about providing spiritual care in Muslim societies. Results. Searching main databases lead to identifying 84 articles alongside with 18 papers from hand searching, which all were reviewed by two investigators. Of this collection, only five papers met the criteria as being original research either quantitative or qualitative, published during the last 10 years. Cultural background plays an important role. Our findings conceded that very few papers are available in Islamic context about spiritual care at the end of life, where only three were quantitative. Research in this field, however, is rapidly growing compared with the previous year. Conclusion. While cancer is rapidly increasing specially in developing world, the need of terminally ill patients with other conditions should be equally considered. Spirituality in Islamic societies does exist profoundly, which needs more research especially in terminal life and even bereavement.Background. Islam has a profound concept about death and aftermath. Believing in living after death and resurrection is one of the three main principles of Islam. Since the increasing incidence of people in need of palliative care in developing countries and the fact that Muslims, who dominantly live in developing world, are very dependent on spirituality, describing the ways that spiritual care is described and provided in the Islamic context is highly demanded. This paper aims at delineating original research in this subject in a systematic manner. Method. Several medical databases were reviewed in a systematic manner to investigate original quantitative or qualitative researches about providing spiritual care in Muslim societies. Results. Searching main databases lead to identifying 84 articles alongside with 18 papers from hand searching, which all were reviewed by two investigators. Of this collection, only five papers met the criteria as being original research either quantitative or qualitative, published during the last 10 years. Cultural background plays an important role. Our findings conceded that very few papers are available in Islamic context about spiritual care at the end of life, where only three were quantitative. Research in this field, however, is rapidly growing compared with the previous year. Conclusion. While cancer is rapidly increasing specially in developing world, the need of terminally ill patients with other conditions should be equally considered. Spirituality in Islamic societies does exist profoundly, which needs more research especially in terminal life and even bereavement

    Dijagnostičke vrijednosti proteina akutne faze u iranskoga domaćega goveda invadiranoga praživotinjom Theileria annulata

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    This study was conducted to assess the pattern of changes and the relative value of acute phase proteins (APP) including haptoglobin (Hp), serum amyloid A (SAA), ceruloplasmin and fi brinogen in Iranian indigenous cattle infected with Theileria annulata. The diseased group comprised 24 Iranian indigenous dairy cattle, 2-3 years old, naturally infected with Theileria annulata. The infected animals were divided into 4 subgroups with different parasitemia rates (<1% and 1-3%). As a control group, 10 uninfected cattle were also sampled. Blood samples were collected and all measurements were made using validated methods. There were significant differences in red blood cells (RBCs), packed cell volume (PCV), hemoglobin (Hb) and concentrations of Hp, SAA, ceruloplasmin and fibrinogen between healthy cattle and those infected with T. annulata with different parasitemia rates (P<0.05). As the parasitemia rate increased in infected cattle, a signifi cant decrease was observed in RBCs, PCV and Hb. In contrast, with the increase in the parasitemia rate, a significant increase in Hp, SAA, ceruloplasmin and fibrinogen was evident. The optimal cut-off point was set by the receiver operating characteristics (ROC) method to >5.68 μg/mL for SAA, >0.09 g/L for Hp, >0.049 g/L for ceruloplasmin and >1.90 g/L for fibrinogen, with corresponding 71.50% sensitivity and 100% specificity for SAA, 83.30% sensitivity and 70% specificity for Hp, 50% sensitivity and 90% specificity for ceruloplasmin and 71.30% sensitivity and 80% specificity for fi brinogen. In conclusion, measuring SAA with the highest sensitivity, specificity and AUC compared to other APPs, can be a suitable indicator of inflammatory reactions in indigenous cattle infected with Theileria annulata.Istraživanje je provedeno s potrebom da se utvrdi dinamika promjena i relativne vrijednosti proteina akutne faze, uključujući haptoglobin (Hp), serumski amiloid A, ceruloplazmin i fibrinogen, u iranskoga domaćega goveda invadiranoga praživotinjom Theileria annulata. Skupina pokusnih životinja sadržavala je ukupno 24 iranska domaća mliječna goveda u dobi od dvije do tri godine invadirana praživotinjom Theileria annulata. Invadirane životinje bile su podijeljene u četiri podskupine s obzirom na različite razine parazitemije (5,68 μg/mL za serumski amiloid A, >0,09 za haptoglobin, >0,049 g/L za ceruloplazmin i >1,90 g/L za fibrinogen. Za serumski je amiloid osjetljivost iznosila 71,50% dok je specifičnost bila 100%. Osjetljivost je za haptoglobin iznosila 83,30% dok je specifičnost iznosila 70%. Za ceruloplazmin je osjetljivost iznosila 50%, a specifičnost 90%. Za fibrinogen je osjetljivost iznosila 71,30% dok je specifičnost iznosila 80%. Zaključno se može reći da mjerenje vrijednosti serumskoga amiloida A može biti prikladan pokazatelj upale uzrokovane praživotinjom Theileria annulata jer se u odnosu na ostale proteine akutne faze odlikuje najvišom razinom osjetljivosti, specifičnosti i AUC

    Comparison of the Efficiency of Two Taping Techniques in Reducing Thoracic Kyphosis among Girls Aged 18-30 Years

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    Background: Kyphosis means an abnormal increase in the curvature of the thoracic region of the vertebral column and refers to a situation where the thoracic kyphosis range is more than forty five degrees. Vertebral column taping seems to be one of the most effective ways of treating kyphosis. The aim of this study was to investigate and compare the effect of two taping techniques in reducing the degree of kyphosis in girls aged 18-30 years. Methods: Thirty-two volunteers were randomly assigned into two groups (n=19 per group) of V–shaped tape and I-shaped tape. Taping techniques were performed as follows by applying 50% tensile force: V–shaped tape: The tape started on both sides of the anterior of acromioclavicular joint and extended to the spinous process of T6 vertebra. I–shaped tape: The patient’s body was kept in a standing and straight state and then a longitudinal tape was applied from T1 to the deepest lumbar lordosis region. The measurements were carried out before, immediately, 24, and 48 hours after taping by a flexible ruler in a similar manner. Data analysis was performed using Friedman Test, Kolmogorov-Smirnov Test, Wilcoxon Signed Rank Test and Mann Whitney Test. Results: The results of this study showed a significant reduction in the degree of kyphosis in the case of the V-shaped tape 48 hours after taping. However, the degree of kyphosis decreased after 24 h (P=0.001) and 48 hours (P< 0001) in the I-shaped tape group. In addition, there was no significant difference between the two interventions in terms of decreasing the degree of kyphosis at any time interval except for 24 hours (P=0.043). Conclusion: Taping reduces the degree of kyphosis by creating mechanical support, creating proprioceptive feedback, affecting the proprioception, improving the function of spinal erectors, and improving the mental image of the body with kyphosis. It appears that the I-shaped tape positioning on the alignment of spinal erectors spine makes it more effective

    Attribution of feature magnitudes is influenced by trained reading-writing direction

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    Spatial configurations amongst stimuli can influence magnitude attributions. Someone's acquired reading and writing direction (RWD) can provide a spatial schema of primacy extending from left (maximum) to right (minimum) for Westerners and opposite for leftward RWD languages. Primacy information can be transformed into a magnitude attribution regarding a feature quality, perceiving an object as having “more” of a certain quality for Westerners when positioned left amongst two similar objects, likewise when positioned right for people with a right-to-left RWD. Results showed that native English speakers tended to attribute greater magnitude of a given feature in fictitious products displayed left within a pair, indicating which of two products was “most” representative of a certain quality (Experiment 1a) but they would randomly choose when asked which product represented “least” of the quality (Experiment 1b). A similar, but reversed pattern of effects was obtained for Farsi participants only familiar with Farsi (Experiment 2)

    Association of Pulmonary Function Tests and Serum Vitamin D Levels in Asthmatics With Vitamin D Deficiency

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    Objective: The effects of serum vitamin D levels on the evolution or severity of asthma have been widely researched; however, conflicting results have been achieved. This study was designed to evaluate the relationship between serum vitamin D levels and pulmonary function tests in asthmatic and non-asthmatic people with vitamin D deficiency.Materials and Methods: This was a prospective cross-sectional study on healthy adults and asthmatic patients. Standard spirometry and serum 25-hydroxyvitamin D test were performed for all participants.Results: Forty asthmatic patients and 40 healthy controls were tested. The mean age of participants was 42.86 ± 1.6. High prevalence of vitamin D deficiency was found in both the asthmatic and control groups. No significant correlation was found between serum vitamin D levels and spirometry parameters in either of the groups (P = 0.83). Conclusion: Serum levels of 25-hydroxyvitamin D were not correlated with the severity of asthma as evaluated by pulmonary function tests in asthmatics

    The Association Between Higher Expression of Talin-1 and the Reduced Survival Rate in Ovarian Serous Carcinoma Patients

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    Background & Objective: Talin-1 is a constituent of the multiprotein adhesion complexes that play main role in the formation of tumors and migration in different types of malignancies. The present study aimed to assess expression and prognostic significance of the talin-1 protein in ovarian serous carcinoma (OSC) patients. Methods: The expression of talin-1 in mRNA and its protein levels were investigated for ovarian cancer (OC) by using bioinformatics tools, including Gene Expression Profiling Interactive Analysis 2 (GEPIA2), Gene Expression Database of Normal and Tumor Tissue 2 (GENT2), and The University of ALabama at Birmingham CANcer data analysis Portal (UALCAN) databases. Thereafter, immunohistochemical (IHC) staining was used to study the expression patterns of the talin-1 protein using 46 paraffin-embedded OSC tissue specimens, 25 benign tumors, and 20 normal tissues, which were assembled in tissue microarrays (TMAs). We also assessed the potential association between the expression of the talin-1 protein, various clinicopathological parameters, and survival outcomes. Results: Our IHC examination for talin-1 was significantly overexpressed in OSC tissues compared to benign tumors and normal tissues. The Kaplan-Meier survival analysis has also indicated statistically significant differences in terms of diseasespecific survival (DSS) and progression-free survival (PFS) between the patients with high and low expression levels of talin-1, respectively. Conclusion: The talin-1 protein was overexpressed in OSC tissues, and a high expression level of talin-1 was found to be significantly associated with tumor aggressiveness and poorer DSS or PFS. Therefore, talin-1 may serve as a molecular marker of cancer progression and a novel prognostic biomarker in these patients

    Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis

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    BACKGROUND: Rates of antimicrobial resistance (AMR) are rising globally and there is concern that increased migration is contributing to the burden of antibiotic resistance in Europe. However, the effect of migration on the burden of AMR in Europe has not yet been comprehensively examined. Therefore, we did a systematic review and meta-analysis to identify and synthesise data for AMR carriage or infection in migrants to Europe to examine differences in patterns of AMR across migrant groups and in different settings. METHODS: For this systematic review and meta-analysis, we searched MEDLINE, Embase, PubMed, and Scopus with no language restrictions from Jan 1, 2000, to Jan 18, 2017, for primary data from observational studies reporting antibacterial resistance in common bacterial pathogens among migrants to 21 European Union-15 and European Economic Area countries. To be eligible for inclusion, studies had to report data on carriage or infection with laboratory-confirmed antibiotic-resistant organisms in migrant populations. We extracted data from eligible studies and assessed quality using piloted, standardised forms. We did not examine drug resistance in tuberculosis and excluded articles solely reporting on this parameter. We also excluded articles in which migrant status was determined by ethnicity, country of birth of participants' parents, or was not defined, and articles in which data were not disaggregated by migrant status. Outcomes were carriage of or infection with antibiotic-resistant organisms. We used random-effects models to calculate the pooled prevalence of each outcome. The study protocol is registered with PROSPERO, number CRD42016043681. FINDINGS: We identified 2274 articles, of which 23 observational studies reporting on antibiotic resistance in 2319 migrants were included. The pooled prevalence of any AMR carriage or AMR infection in migrants was 25·4% (95% CI 19·1-31·8; I2 =98%), including meticillin-resistant Staphylococcus aureus (7·8%, 4·8-10·7; I2 =92%) and antibiotic-resistant Gram-negative bacteria (27·2%, 17·6-36·8; I2 =94%). The pooled prevalence of any AMR carriage or infection was higher in refugees and asylum seekers (33·0%, 18·3-47·6; I2 =98%) than in other migrant groups (6·6%, 1·8-11·3; I2 =92%). The pooled prevalence of antibiotic-resistant organisms was slightly higher in high-migrant community settings (33·1%, 11·1-55·1; I2 =96%) than in migrants in hospitals (24·3%, 16·1-32·6; I2 =98%). We did not find evidence of high rates of transmission of AMR from migrant to host populations. INTERPRETATION: Migrants are exposed to conditions favouring the emergence of drug resistance during transit and in host countries in Europe. Increased antibiotic resistance among refugees and asylum seekers and in high-migrant community settings (such as refugee camps and detention facilities) highlights the need for improved living conditions, access to health care, and initiatives to facilitate detection of and appropriate high-quality treatment for antibiotic-resistant infections during transit and in host countries. Protocols for the prevention and control of infection and for antibiotic surveillance need to be integrated in all aspects of health care, which should be accessible for all migrant groups, and should target determinants of AMR before, during, and after migration. FUNDING: UK National Institute for Health Research Imperial Biomedical Research Centre, Imperial College Healthcare Charity, the Wellcome Trust, and UK National Institute for Health Research Health Protection Research Unit in Healthcare-associated Infections and Antimictobial Resistance at Imperial College London

    Surgical site infection after gastrointestinal surgery in high-income, middle-income, and low-income countries: a prospective, international, multicentre cohort study

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    Background: Surgical site infection (SSI) is one of the most common infections associated with health care, but its importance as a global health priority is not fully understood. We quantified the burden of SSI after gastrointestinal surgery in countries in all parts of the world. Methods: This international, prospective, multicentre cohort study included consecutive patients undergoing elective or emergency gastrointestinal resection within 2-week time periods at any health-care facility in any country. Countries with participating centres were stratified into high-income, middle-income, and low-income groups according to the UN's Human Development Index (HDI). Data variables from the GlobalSurg 1 study and other studies that have been found to affect the likelihood of SSI were entered into risk adjustment models. The primary outcome measure was the 30-day SSI incidence (defined by US Centers for Disease Control and Prevention criteria for superficial and deep incisional SSI). Relationships with explanatory variables were examined using Bayesian multilevel logistic regression models. This trial is registered with ClinicalTrials.gov, number NCT02662231. Findings: Between Jan 4, 2016, and July 31, 2016, 13 265 records were submitted for analysis. 12 539 patients from 343 hospitals in 66 countries were included. 7339 (58·5%) patient were from high-HDI countries (193 hospitals in 30 countries), 3918 (31·2%) patients were from middle-HDI countries (82 hospitals in 18 countries), and 1282 (10·2%) patients were from low-HDI countries (68 hospitals in 18 countries). In total, 1538 (12·3%) patients had SSI within 30 days of surgery. The incidence of SSI varied between countries with high (691 [9·4%] of 7339 patients), middle (549 [14·0%] of 3918 patients), and low (298 [23·2%] of 1282) HDI (p < 0·001). The highest SSI incidence in each HDI group was after dirty surgery (102 [17·8%] of 574 patients in high-HDI countries; 74 [31·4%] of 236 patients in middle-HDI countries; 72 [39·8%] of 181 patients in low-HDI countries). Following risk factor adjustment, patients in low-HDI countries were at greatest risk of SSI (adjusted odds ratio 1·60, 95% credible interval 1·05–2·37; p=0·030). 132 (21·6%) of 610 patients with an SSI and a microbiology culture result had an infection that was resistant to the prophylactic antibiotic used. Resistant infections were detected in 49 (16·6%) of 295 patients in high-HDI countries, in 37 (19·8%) of 187 patients in middle-HDI countries, and in 46 (35·9%) of 128 patients in low-HDI countries (p < 0·001). Interpretation: Countries with a low HDI carry a disproportionately greater burden of SSI than countries with a middle or high HDI and might have higher rates of antibiotic resistance. In view of WHO recommendations on SSI prevention that highlight the absence of high-quality interventional research, urgent, pragmatic, randomised trials based in LMICs are needed to assess measures aiming to reduce this preventable complication
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