803 research outputs found

    Spinal Anaesthesia in Spinal Surgery

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    Getting to the root of the problem

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    [ABSTRACT ONLY; NO FULL TEXT] This report is generated with the scope of consulting our client, a dental and medical institute that currently specializes in offering short-term dental assistant training and cardiopulmonary resuscitation (CPR) courses. The institute is located in the Greater Los Angeles area. The institute initiated contact with the MBA consultants for recommendations as it is currently looking to expand its capacity as well as the courses it offers to encompass nurse training. The client provided data in the discovery phase that included financial statements such as the profit and loss sheet, the balance sheet, internal procedures, among other artifacts. Our team collectively aimed to use current data to analyze the dental assistant profession and industry conditions utilizing data from the U.S. Bureau of Labor Statistics, Mintel, IBISWoHd, US Census Bureau, and other related data. Primary market research was conducted in the form of one-on-one interviews and consumer surveys. Additionally, we contacted local competitors and analyzed available data to understand the similarities and differences between our client and them. Utilizing the expertise and advanced concepts gained from the Master of Business Administration degree program, we strive to provide our client with grounded recommendations supported by relevant data such as that provided by the client, as well as data found by the team from established sources. Our research shows that the dental assisting profession has a favorable outlook for those interested in the field. There is no shortage of interest in the dental assisting field, but our client has noted declined revenue for the last year. Upon further review, we noted that the program was not being offered in a consistent manner. The decline in opportunity to capitalize a full year worth of dental assisting courses comes from operational inefficiencies. Additionally, the current website also limits their ability to optimize their operations. Lastly, the classes cannot be effectively marketed due to the aforementioned inefficiencies. While the market has no shortage of competitors, the institute's core competencies can help the firm differentiate itself from its competitors. In order for our client to expand its scope in the future, it must first correct its current condition. Utilizing both internal and external data, we seek to string together all relevant information to help our client not only improve their position, but also create a self-sufficient setup that will allow them to remain competitive in the marketplace. My participation in consulting for this client involves providing a marketing evaluation as part of the internal analysis, a technological assessment with respect to the external environment (Political, Economic, Sociological, Technological, Legal and Environmental, PESTLE), co-authoring the consumer survey as well as being its main point of contact, conducting the competitor analysis, and perhaps the biggest contribution, the cost-benefit analysis. The cost benefit-analysis was generated as a supplement to show the various trajectories of operational levels with ideal, intermediate, and worst-case scenarios. Additional duties involved organizational and editorial roles with respect to the final report and presentation. Some of the trends analyzed from the consumer survey results confirmed the core competencies that were identified in the discovery phase with our client. The market is currently saturated with competitors who offer similar programs over long periods. We have also identified from student opinion that there are preferences students have, which provides opportunities for the institute. Based on the extensive research conducted, we have created the following main recommendations to improve the overall positioning of our client. These recommendations, along with all the data and various analyses conducted, were presented to our client at the end of the semester following months of deliberation. First, we recommend hiring a new instructor that is more aligned with the institute's goals. Next, we must invest in tools that can help us improve our operational efficiency. Improving our current situation with expanded operational efficiency can help the institute establish itself as the premier choice in dental assisting programs and whatever fields it decides to expand into

    The therapeutic potential of attentional bias modification training for insomnia: study protocol for a randomised controlled trial.

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    The efficacy of attentional bias modification (ABM) as a treatment for anxiety and depression has been extensively studied with promising results. Despite some evidence of sleep-related attentional biases in insomnia, only a small number of studies, yielding mixed results, have examined the application of ABM in insomnia. This study specifically aims to determine whether ABM can reduce (i) the presence of an attentional bias for sleep-related threatening words; (ii) insomnia symptom severity; (iii) sleep onset latency; and (iv) pre-sleep cognitive arousal amongst individuals with insomnia compared to a non-treatment control group of individuals with insomnia. We propose a randomised controlled trial of 90 individuals from the general population who meet the criteria for Insomnia Disorder. Following an initial examination for the presence of a sleep-related attentional bias using the dot-probe paradigm, participants will be randomised to an online attentional bias modification training condition, or to a standard attentional bias task (non-treatment) control condition. Both conditions will be delivered online by a web platform. All participants allocated to the non-treatment control group will be offered ABM training once the study is complete. The primary outcome will be the attentional bias indices of vigilance and disengagement and self-reported insomnia symptoms, sleep onset latency and pre-sleep cognitive arousal. Attentional bias and insomnia symptoms will be assessed at baseline (day 1) and post-treatment (2 days after the final training session: day 9). Insomnia symptoms will be again assessed at follow-up (day 16). Secondary outcomes include examining whether sleep associated monitoring and worry are related to a sleep-related attentional bias in insomnia, and whether such reports reduce following ABM. All main analyses will be carried out on completion of follow-up assessments. The trial is supported by the Department of Psychology, Sociology and Politics at Sheffield Hallam University. This study will extend the research base examining the efficacy of attentional bias modification for insomnia. ISRCTN ( ISRCTN11643569 , registered on 5 June 2018)

    A note on comonotonicity and positivity of the control components of decoupled quadratic FBSDE

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    In this small note we are concerned with the solution of Forward-Backward Stochastic Differential Equations (FBSDE) with drivers that grow quadratically in the control component (quadratic growth FBSDE or qgFBSDE). The main theorem is a comparison result that allows comparing componentwise the signs of the control processes of two different qgFBSDE. As a byproduct one obtains conditions that allow establishing the positivity of the control process.Comment: accepted for publicatio

    Effect of holding equine oocytes in meiosis inhibitor-free medium before in vitro maturation and of holding temperature on meiotic suppression and mitochondrial energy/redox potential

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    BACKGROUND: Evaluation of mitochondrial function offers an alternative to evaluate embryo development for assessment of oocyte viability, but little information is available on the relationship between mitochondrial and chromatin status in equine oocytes. We evaluated these parameters in immature equine oocytes either fixed immediately (IMM) or held overnight in an Earle’s/Hank’s’ M199-based medium in the absence of meiotic inhibitors (EH treatment), and in mature oocytes. We hypothesized that EH holding may affect mitochondrial function and that holding temperature may affect the efficiency of meiotic suppression. METHODS: Experiment 1 - Equine oocytes processed immediately or held in EH at uncontrolled temperature (22 to 27°C) were evaluated for initial chromatin configuration, in vitro maturation (IVM) rates and mitochondrial energy/redox potential. Experiment 2 - We then investigated the effect of holding temperature (25°C, 30°C, 38°C) on initial chromatin status of held oocytes, and subsequently repeated mitochondrial energy/redox assessment of oocytes held at 25°C vs. immediately-evaluated controls. RESULTS: EH holding at uncontrolled temperature was associated with advancement of germinal vesicle (GV) chromatin condensation and with meiotic resumption, as well as a lower maturation rate after IVM. Holding did not have a significant effect on mitochondrial distribution within chromatin configurations. Independent of treatment, oocytes having condensed chromatin had a significantly higher proportion of perinuclear/pericortical mitochondrial distribution than did other GV configurations. Holding did not detrimentally affect oocyte energy/redox parameters in viable GV-stage oocytes. There were no significant differences in chromatin configuration between oocytes held at 25°C and controls, whereas holding at higher temperature was associated with meiosis resumption and loss of oocytes having the condensed chromatin GV configuration. Holding at 25°C was not associated with progression of mitochondrial distribution pattern and there were no significant differences in oocyte energy/redox parameters between these oocytes and controls. CONCLUSIONS: Mitochondrial distribution in equine GV-stage oocytes is correlated with chromatin configuration within the GV. Progression of chromatin configuration and mitochondrial status during holding are dependent on temperature. EH holding at 25°C maintains meiotic arrest, viability and mitochondrial potential of equine oocytes. This is the first report on the effects of EH treatment on oocyte mitochondrial energy/redox potential

    Unveiling the role of PUS7-mediated pseudouridylation in host protein interactions specific for the SARS-CoV-2 RNA genome

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    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a positive single-stranded RNA virus, engages in complex interactions with host cell proteins throughout its life cycle. While these interactions enable the host to recognize and inhibit viral replication, they also facilitate essential viral processes such as transcription, translation, and replication. Many aspects of these virus-host interactions remain poorly understood. Here, we employed the cat RAPID algorithm and utilized the RNA-protein interaction detection coupled with mass spectrometry technology to predict and validate the host proteins that specifically bind to the highly structured 5' and 3' terminal regions of the SARS-CoV-2 RNA. Among the interactions identified, we prioritized pseudouridine synthase PUS7, which binds to both ends of the viral RNA. Using nanopore direct RNA sequencing, we discovered that the viral RNA undergoes extensive post-transcriptional modifications. Modified consensus regions for PUS7 were identified at both terminal regions of the SARS-CoV-2 RNA, including one in the viral transcription regulatory sequence leader. Collectively, our findings offer insights into host protein interactions with the SARS-CoV-2 UTRs and highlight the likely significance of pseudouridine synthases and other post-transcriptional modifications in the viral life cycle. This new knowledge enhances our understanding of virus-host dynamics and could inform the development of targeted therapeutic strategies. Using proteomic approaches and in silico predictions, we identified the human host proteins interacting with the terminal regions of SARS-CoV-2 genome. Among these is PUS7, an enzyme converting uridine into pseudouridine. Nanopore sequencing confirmed that viral RNAs contained modified PUS7 consensus sequences, suggesting a role for PUS7 in the virus biology

    Nanopore ReCappable sequencing maps SARS-CoV-2 5′ capping sites and provides new insights into the structure of sgRNAs

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    The SARS-CoV-2 virus has a complex transcriptome characterised by multiple, nested subgenomic RNAsused to express structural and accessory proteins. Long-read sequencing technologies such as nanopore direct RNA sequencing can recover full-length transcripts, greatly simplifying the assembly of structurally complex RNAs. However, these techniques do not detect the 5 ' cap, thus preventing reliable identification and quantification of full-length, coding transcript models. Here we used Nanopore ReCappable Sequencing (NRCeq), a new technique that can identify capped full-length RNAs, to assemble a complete annotation of SARS-CoV-2 sgRNAs and annotate the location of capping sites across the viral genome. We obtained robust estimates of sgRNA expression across cell lines and viral isolates and identified novel canonical and non-canonical sgRNAs, including one that uses a previously un-annotated leader-to-body junction site. The data generated in this work constitute a useful resource for the scientific community and provide important insights into the mechanisms that regulate the transcription of SARS-CoV-2 sgRNAs

    Long-range angular correlations on the near and away side in p–Pb collisions at

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    Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at root(NN)-N-S=2.76 TeV

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    Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

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    Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe
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