106 research outputs found
ISI spectral radii and ISI energies of graph operations
Graph energy is defined to be the p-norm of adjacency matrix associated to the graph for p = 1 elaborated as the sum of the absolute eigenvalues of adjacency matrix. The graphâs spectral radius represents the adjacency matrixâs largest absolute eigenvalue. Applications for graph energies and spectral radii can be found in both molecular computing and computer science. On similar lines, Inverse Sum Indeg, (ISI) energies, and (ISI) spectral radii can be constructed. This articleâs main focus is the ISI energies, and ISI spectral radii of the generalized splitting and shadow graphs constructed on any regular graph. These graphs can be representation of many physical models like networks, molecules and macromolecules, chains or channels. We actually compute the relations about the ISI energies and ISI spectral radii of the newly created graphs to those of the original graph
Spatial Hazard Assessment Practices in Data Poor Areas: A Participatory Approach towards Natural Disaster Management
For the post assessments of flash flood disaster, Participatory GIS (PGIS) technique in a combination of spatial domain is developed for understanding the local communit
Histological changes in the liver of diabetic rats: A review of pathogenesis of nonalcoholic fatty liver disease in type 1 diabetes mellitus
Abstract: Abundant knowledge is present over nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus but no attention has been given to the same aspect with type 1 diabetes mellitus (T1DM) in humans. However, various animal modeled studies are documented having induced T1DM using chemical induction by alloxan (ALX) or streptozotocin (SZ) to investigate and comprehend the nature and pathophysiology of NAFLD in T1DM. The objectives of this review were to assess whether T1DM induced by ALX or SZ could cause histological (morphological and ultrastructural) changes in rat liver to illustrate the effects of these drugs and diabetes, and pathophysiology of NAFLD in T1DM. To achieve these objectives, we systematically searched the studies from EconLit, Embase, Google Scholar, Medline, PubMed, ProQuest, Scopus, Springer Link, and Science Direct databases. Initially, 150 studies were retrieved. Out of these, 107 studies were removed as these failed to provide relevant details. Finally, 43 articles were selected for this review. This review concluded that diabetes induced by ALX or SZ, cause biochemical alterations in blood and pathophysiological variations in the liver of rats. These changes can vary from steatosis to steatohepatitis and liver fibrosis, and are similar to the modifications observed in human liver
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Safety and Long-term Efficacy of Thoracoscopic Epicardial Ablation in Patients with Paroxysmal Atrial Fibrillation: A Retrospective Study
Background: The aim of this study is to report the long-term efficacy and safety of thoracoscopic epicardial left atrial ablation (TELA) in patients with paroxysmal atrial fibrillation (AF). Methods: This was a retrospective review of medical records. We included all patients diagnosed with paroxysmal AF who underwent TELA at our institution between 04/2011 and 06/2017. TELA included pulmonary vein isolation, LA dome lesions and LA appendage exclusion. All (n = 55) patients received an implantable loop recorder (ILR), 30 days post-operatively. Antiarrhythmic and anticoagulation therapy were discontinued at 90 and 180 days postoperatively, respectively, if patients were free of AF recurrence. Failure was defined as â„two minutes of continuous AF, or atrial tachycardia. Results: Fifty-five patients (78% males, mean age = 61.6 years) qualified for the study. The average duration in AF was 3.64 +/â 3.4 years, mean CHA2DS2-VASc Score was 2.0 +/â 1.6. The procedure was attempted in 57 patients and completed successfully in 55 (96.5%). Two patients experienced a minor pulmonary vein bleed that was managed conservatively. Post procedure, one patient experienced pulmonary edema, another experienced a pneumothorax requiring a chest tube and another experienced acute respiratory distress syndrome resulting in longer hospitalization. Otherwise, there were no major procedural complications. Success rates were 89.1% (n = 49/ 55), 85.5% (n = 47/55) and 76.9% (n = 40/52) at 6, 12 and 24 months, respectively. In the multivariate coxproportional hazard model, survival at the mean of covariates was 86 and 74% at 12 and 24 months, respectively. Conclusion: In this single center experience, TELA was a safe and efficacious procedure for patients with paroxysmal AF
Comparative immunocompetence and interspecies transmission of avian orthoavulavirus-1 in feral birds originating from rural and urban settings
Feral birds residing close to urban settings exhibit higher immunocompetence against environmental pathogens than their counterparts in rural areas. In this study, we comprehensively evaluated the immunocompetence of five specific feral bird species and investigated the potential for interspecies transmission and pathogenicity of Avian orthoavulavirus-1 (AOAV-1) originating from the Anseriformes order. The immunocompetence assessment involved administering the phytohemagglutinin (PHA) test to individual groups of birds from rural and urban settings, measuring patagium thickness at specific time intervals (12, 24, 36, 48, and 60 h) following the administration of 0.1 mL (1 mg/mL) of PHA. Urban birds displayed significantly enhanced mean swelling responses, particularly urban pigeons, which exhibited a significant difference in patagium thickness at all-time intervals except for 24 h (p = 0.000, p = 0.12). Similarly, rural and urban quails and crows showed substantial differences in patagium thickness at all-time intervals except for 12 h (p = 0.542, p = 0.29). For the assessment of interspecies transmission potential and pathogenicity, each feral bird group was separately housed with naive broiler birds (n = 10 each) and challenged with a velogenic strain of AOAV-1 isolate (Mallard-II/UVAS/Pak/2016) at a dose of 1 mL (10 EID /mL). Urban birds demonstrated higher resistance to the virus compared to their rural counterparts. These findings highlight the specific immunocompetence of feral bird species and their potential contributions to AOAV-1 transmission and pathogenicity. Continuous monitoring, surveillance, and strict implementation of biosafety and biosecurity measures are crucial for effectively controlling AOAV-1 spillover to the environment and wild bird populations in resource-limited settings, particularly Pakistan
Big Data in the construction industry: A review of present status, opportunities, and future trends
© 2016 Elsevier Ltd The ability to process large amounts of data and to extract useful insights from data has revolutionised society. This phenomenonâdubbed as Big Dataâhas applications for a wide assortment of industries, including the construction industry. The construction industry already deals with large volumes of heterogeneous data; which is expected to increase exponentially as technologies such as sensor networks and the Internet of Things are commoditised. In this paper, we present a detailed survey of the literature, investigating the application of Big Data techniques in the construction industry. We reviewed related works published in the databases of American Association of Civil Engineers (ASCE), Institute of Electrical and Electronics Engineers (IEEE), Association of Computing Machinery (ACM), and Elsevier Science Direct Digital Library. While the application of data analytics in the construction industry is not new, the adoption of Big Data technologies in this industry remains at a nascent stage and lags the broad uptake of these technologies in other fields. To the best of our knowledge, there is currently no comprehensive survey of Big Data techniques in the context of the construction industry. This paper fills the void and presents a wide-ranging interdisciplinary review of literature of fields such as statistics, data mining and warehousing, machine learning, and Big Data Analytics in the context of the construction industry. We discuss the current state of adoption of Big Data in the construction industry and discuss the future potential of such technologies across the multiple domain-specific sub-areas of the construction industry. We also propose open issues and directions for future work along with potential pitfalls associated with Big Data adoption in the industry
Development and testing of zinc sulfate and zinc oxide nanoparticle-coated urea fertilizer to improve N and Zn use efficiency
Nitrogen (N) losses from conventional fertilizers in agricultural systems are very high, which can lead to serious environmental pollution with economic loss. In this study, innovative slow-release fertilizers were prepared using zinc (Zn) [nanoparticles (NPs) or in bulk], using molasses as an environmentally friendly coating. Several treatments were prepared using Zn in different concentrations (i.e., 0.25%, 0.5%, and 4% elemental Zn). The zinc oxide nanoparticles (ZnO-NPs) were prepared from zinc sulfate heptahydrate (ZnSO4·7H2O), and were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Furthermore, the Zn-loaded urea samples were tested for urea N release rate, leaching of water from soil, and crushing strength to assess the impact of coating on the final finished product. Pot experiments were conducted simultaneously to check the agronomic effects of Zn-coated slow-release urea on the growth and development of wheat (Triticum aestivum L.). The laboratory and pot results confirmed that the ZnO-NP treatments boost wheat growth and yield as a result of reduced N and Zn release. UZnNPs2 (urea coated with 0.5% ZnO-NPs and 5% molasses) demonstrated the best results among all the treatments in terms of slow nutrient release, N and Zn uptake, and grain yield. The UZnNPs2 treatment increased plant yield by 34% (i.e., 4,515 vs. 3,345 kg haâ1) relative to the uncoated prill-treated crop because of the slower release of Zn and N
RDSP: Rapidly Deployable Wireless Ad Hoc System for Post-Disaster Management
In post-disaster scenarios, such as after floods, earthquakes, and in war
zones, the cellular communication infrastructure may be destroyed or seriously
disrupted. In such emergency scenarios, it becomes very important for first aid
responders to communicate with other rescue teams in order to provide feedback
to both the central office and the disaster survivors. To address this issue,
rapidly deployable systems are required to re-establish connectivity and assist
users and first responders in the region of incident. In this work, we describe
the design, implementation, and evaluation of a rapidly deployable system for
first response applications in post-disaster situations, named RDSP. The
proposed system helps early rescue responders and victims by sharing their
location information to remotely located servers by utilizing a novel routing
scheme. This novel routing scheme consists of the Dynamic ID Assignment (DIA)
algorithm and the Minimum Maximum Neighbor (MMN) algorithm. The DIA algorithm
is used by relay devices to dynamically select their IDs on the basis of all
the available IDs of networks. Whereas, the MMN algorithm is used by the client
and relay devices to dynamically select their next neighbor relays for the
transmission of messages. The RDSP contains three devices; the client device
sends the victim's location information to the server, the relay device relays
information between client and server device, the server device receives
messages from the client device to alert the rescue team. We deployed and
evaluated our system in the outdoor environment of the university campus. The
experimental results show that the RDSP system reduces the message delivery
delay and improves the message delivery ratio with lower communication
overhead.Comment: 23 pages, 12 figures, accepted for publication in Sensors 202
Complex partial non-convulsive status epilepticus masquerading as hepatic encephalopathy: a case report
INTRODUCTION: Hepatic encephalopathy is usually suspected in patients who are cirrhotic with neuropsychiatric manifestations. We present a case of suspected hepatic encephalopathy that did not respond to standard empiric therapy and was eventually diagnosed as non-convulsive status epilepticus of complex partial type. Our patient responded dramatically to anti-convulsive therapy. CASE PRESENTATION: We report the case of a 45-year-old African-American man with hepatitis C virus cirrhosis and human immunodeficiency virus who presented to our facility with a one-day history of confusion and a variable mental status. Our patientâs vital signs were stable and all his electrolytes were within normal range. A clinical diagnosis of hepatic encephalopathy was made and our patient was started on empiric therapy with lactulose and rifaximin. Our patient did not respond to therapy. After five days of treatment, alternative diagnoses were sought and a neurology consult was requested. An electroencephalogram was eventually performed which showed seizure activity in the right parietal lobe. A diagnosis of non-convulsive status epilepticus was made and our patient was started on oral levetiracetam. On day two of therapy, our patient was alert and oriented. He continues to do well on follow-up approximately one year after discharge. CONCLUSIONS: Non-convulsive status epilepticus should be considered in the differential diagnosis of patients with suspected hepatic encephalopathy who do not respond to empirical treatment. Further studies are needed to investigate the incidence of this entity in patients with persistent hepatic encephalopathy
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