56 research outputs found
Supplemental material - Safety and efficacy of endovascular thrombectomy in patients with severe cerebral venous thrombosis: A meta-analysis
No full textSupplemental material for Safety and efficacy of endovascular thrombectomy in patients with severe cerebral venous thrombosis: A meta-analysis by Gaurav Nepal, Sanjeev Kharel, Riwaj Bhagat, Megan A Coghlan, Jayant K Yadav, Stella Goeschl, Rajan Lamichhane, Subash Phuyal, Rajeev Ojha and Gentle S Shrestha in Journal of Central Nervous System Disease</p
Episode 15
No full textCome listen to Subash, the first international student from Nepal, talk about his experiences both in Nepal and at St. Norbert
Concentration in Knowledge Output: A case of Economics Journals
No full textThis paper assesses the degree of author concentration in seven economics journals, which were published in India during 1990-2002. To measure the degree of author concentration, Lotka's Law was used. Moreover, we also make an exploratory analysis of the geographic, economics subfield and institutional concentration in 704 economics journals. An important finding of this paper is that specialized journals in the sample report the highest degree of author concentration. This result is quite similar to the findings by Cox and Chung (1991). Furthermore, there are several instances showing that the journals lean towards certain norms; this may affect the flow of innovative ideas into economics. We conclude that a knowledge activity, involving the high degree of concentration and a biased publication process, may affect the flow of new ideas into the discipline.Concentration, Lotka's Law
Daphnia survival decreased as the concentration of Cyanobacterial neurotoxin BMAA increased
No full textCyanobacteria, blue-green algae, produces and releases cyanotoxins during Harmful Algal Blooms (HABs) that cause ecological, economic, and human and pet health concerns. The majority of cyanobacteria produce the neurotoxin beta-N-Methylamino-L-alanine (BMAA). Human exposure to BMAA may be an environmental cause of neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS), Parkinson’s disease, and Alzheimer’s disease. The effect of BMAA on zooplankton has not been studied in depth. We investigated how ingestion of BMAA affects the reproductive and developmental behavior of Daphnia in the short- and long term. We hypothesized that different concentrations of BMAA will affect the behavior of Daphnia associated with development and reproduction. We predicted that Daphnia would grow slower and produce fewer offspring in higher concentrations of BMAA. Daphnia were exposed to BMAA concentrations (0, 1, 10, 50, 100, 200 and 300 g/L) for 96 hours at 22-240C with a 16:8 light-dark cycle. The number of survivors and the body length of Daphnia was measured at the end of the experiment. The data were analyzed using One way ANOVA, Kruskal-Wallis, and pairwise comparisons in SYSTAT 13. Results indicated that Daphnia survivorship declined as the concentration of BMAA increased and larger Daphnia had greater survival. The hypothesis was partially supported as Daphnia had lower survival in higher concentrations of BMAA. Our next step is to analyze long-term exposure data to fully test the hypothesis. More studies are needed to better understand the mechanism by which BMAA affects Daphnia development and reproduction.https://digitalcommons.snc.edu/collaborative_presentations/1008/thumbnail.jp
Negative Effects of Earthquake 2015 for the Tourism Industry in Nepal, Case - Nagarkot
No full textNepal is a small landlocked country where tourism industry and its impacts are inseparable. The tourism industry is one of the largest growing commercial sector industries in the world which applies to Nepal, too. The main aim of this Bachelor’s thesis was to project and present the negative effects of 2015 Nepal’s earthquake for the tourism industry of Nepal and especially Nagarkot. This thesis was conducted to obtain the true scenario of tourism in Nepal before and after the 2015 Nepal’s earthquake as well as to present the true challenges and problems that the country is facing after the massive earthquake in 2015. In addition, the probable futures threats and challenges that might strike Nepal and its tourism industry are forecasted.
This research was conducted using both qualitative and quantitative research methodologies which made the research more systematic, scientific as well as easily understandable. Nagarkot was chosen as the case study of the research since it is one of the major tourist destination of Nepal. Earthquake Survey Report-2015 conducted by Nagarkot Municipality 11 was mainly used for the quantitative research and other required data for the quantitative research were collected from secondary sources such as websites, books, newspapers and ebooks. For the qualitative research, interview with the recognized personnel in the tourism industry of Nepal was carried out both personally as well as through email questionnaires.
The key results of this report cover the possibility of the tourism industry in Nepal along with the present situation of tourism after the massive 2015 Nepal’s earthquake. The readers of this thesis will be able to obtain all the crucial information regarding the past as well the present situation of tourism in Nepal in one place. The negative impacts of natural disasters in tourism (especially earthquake) and the data regarding the present situation of the tourism industry in Nagarkot have been highlighted in this report. The social, economic and environmental challenges faced by the people of Nagarkot due to the earthquake have been presented. In addition, basic definition and information about the future trends and their effects on future tourism have been presented so as to make the report more informative and productive.
Nepal is a country with the tremendous possibility of tourism which could attract tourist from all around the globe. The country can have a massive impact in the global tourism industry but is lagging behind due to its geographical location and unendurable infrastructures of development. Because of its geographical location, the natural calamities like earthquake, flooding, and landslide are common in Nepal which has negatively affected the economic, socio-cultural and environmental growth of the country. In addition, unendurable infrastructures of development are among the other reasons behind the vulnerability of nature which have deteriorated the overall tourism industry of Nepal. The sustainable, suitable and efficient practice of tourism in Nepal can have a substantial impact on the global tourism industry.Earthquake Survey Report-2015 conducted by Nagarkot Municipality-11 was used for the research part
Carrier multiplication in van der Waals layered transition metal dichalcogenides
No full text© 2019, The Author(s).Carrier multiplication (CM) is a process in which high-energy free carriers relax by generation of additional electron-hole pairs rather than by heat dissipation. CM is promising disruptive improvements in photovoltaic energy conversion and light detection technologies. Current state-of-the-art nanomaterials including quantum dots and carbon nanotubes have demonstrated CM, but are not satisfactory owing to high-energy-loss and inherent difficulties with carrier extraction. Here, we report CM in van der Waals (vdW) MoTe2 and WSe2 films, and find characteristics, commencing close to the energy conservation limit and reaching up to 99% CM conversion efficiency with the standard model. This is demonstrated by ultrafast optical spectroscopy with independent approaches, photo-induced absorption, photo-induced bleach, and carrier population dynamics. Combined with a high lateral conductivity and an optimal bandgap below 1 eV, these superior CM characteristics identify vdW materials as an attractive candidate material for highly efficient and mechanically flexible solar cells in the future11sciescopu
Lotka' s Law, Co-authorship and Interdisciplinary Publishing
No full textThe robustness or breakdown of Lotka's law about the frequency distribution of scientific productivity depends on scientific cooperation, counting methods, interdisciplinary publishing and selection methods for sample collections. We have chosen to analyse the relationship using Mandelbrot's equivalent distribution model because this model is sensitive and uses the original data (scores). Five sets of authors and publications, the two sets used by Lotka, a set from High Energy Physics, a set from Microbiology and a set based on applicants to a research programme promoting young researchers have been used. It is shown that even for a sample of authors in High-Energy Physics with extremely strong co-authorship, Mandelbrot's distribution law is robust when complete-normalized (fractional) counting is used whereas complete counting results in a breakdown. In the field of Microbiology with much weaker cooperation, both counting methods result in a breakdown of Mandelbrot's law. Today a field like Microbiology with the corresponding set of journals, probably has a large content of interdisciplinary publishing and therefore no more fulfills the precondition of Lotka's law, that the total production of the authors (sources) is considered. For a set of applicants for the Emmy Noether Programme of the German Research Foundation. Mandelbrot's law breaks down despite the fact that all publications co-authored by the applicants are taken into account. In agreement with Bayes' theorem of conditional probabilities these results lead to the conjecture that any selection process of authors and/or publications causes a breakdown of Mandelbrot's law and, as a consequence Lotka's law
Ferromagnetism in MnX2 ( X = S, Se) monolayers
No full textUsing density functional theory combined with Monte Carlo (MC) simulations, we show that the two dimensional (2D) MnS2 and MnSe2 sheets are ideal magnetic semiconductors with long-range magnetic ordering and high magnetic moments (3 mu(B) per unit cell), where all the Mn atoms are ferromagnetically coupled, and the Curie temperatures (T-C) estimated for MnS2 and MnSe2 by the MC simulations are 225 and 250 K, respectively, which can be further increased to 330 K and 375 K by applying 5% biaxial tensile strains.Chemistry, PhysicalPhysics, Atomic, Molecular & ChemicalSCI(E)[email protected]
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