5,544 research outputs found
Ultrastructure of the May-Hegglin anomaly
Ultrastructural features of the leucocytes in two patients suffering from the May-Hegglin anomaly were studied using electron microscopy. In both the cases, electron dense material parallel to the long axis of the inclusions were noted. Platelet ultrastructure was normal. A review of the literature indicates that the May-Hegglin anomaly is a heterogeneous condition both ultrastructurally and clinically
Practical figures of merit and thresholds for entanglement distribution in quantum networks
Before global-scale quantum networks become operational, it is important to
consider how to evaluate their performance so that they can be built to achieve
the desired performance. We propose two practical figures of merit for the
performance of a quantum network: the average connection time and the average
largest entanglement cluster size. These quantities are based on the generation
of elementary links in a quantum network, which is a crucial initial
requirement that must be met before any long-range entanglement distribution
can be achieved and is inherently probabilistic with current implementations.
We obtain bounds on these figures of merit for a particular class of quantum
repeater protocols consisting of repeat-until-success elementary link
generation followed by joining measurements at intermediate nodes that extend
the entanglement range. Our results lead to requirements on quantum memory
coherence times, requirements on repeater chain lengths in order to surpass the
repeaterless rate limit, and requirements on other aspects of quantum network
implementations. These requirements are based solely on the inherently
probabilistic nature of elementary link generation in quantum networks, and
they apply to networks with arbitrary topology.Comment: 17 pages, 7 figures. v2: extensively revised and rewritten. Title and
abstract modified; added a section on overcoming the repeaterless rate limit;
modified statement of Theorem 1. v3: minor changes to match the published
versio
Typing Fingers Vs Writing Fingers
This paper intends to discuss the impact ofnbsp typing on the behavior of kids and the behavioral traits they acquire in comparison of kids who write more than type and are less exposed to electronic gadget interactions
How Much Is Enough? Optimal Support Payments in a Renewable-Rich Power System
The large-scale deployment of intermittent renewable energy sources may cause substantial power imbalance. Together with the transmission grid congestion caused by the remoteness of these sources from load centers, this creates a need for fast-adjusting conventional capacity
such as gas-fired plants. However, these plants have become unprofitable because of lower power prices due to the zero marginal costs of renewables. Consequently, policymakers are proposing new measures for mitigating balancing costs and securing supply. In this paper, we take the perspective of the regulator to assess the effectiveness of support payments to flexible generators. Using data on the German power system, we implement a
bi-level programming model, which shows that such payments for gas-fired plants in southern Germany reduce balancing costs and can be used as part of policy to integrate renewable energy
Flower-like colloid on thyroid fine needle aspiration
No abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/60456/1/20857_ftp.pd
Guest editorial: Transparency, accountability and the role of control mechanisms during the COVID-19 pandemic: a future research agenda in the context of emerging economies
The rapid spread of the coronavirus (COVID-19) triggered an unprecedented global health crisis. This resulted in governments across the world having to take ‘wartime’ measures in promoting health and safety of their citizens. As a response to the pandemic, governments in different countries, advised by relevant experts, announced countrywide shutdowns, restricting the movement of people, suspending public transportation, and closing most businesses. In
many countries, the government also unveiled unprecedented stimulus plans to mitigate the economic impact of the crisis on their citizens. Understandably, due to the nature of the
pandemic, much of such public spending had to occur through an expedited process. This, in turn, could potentially create higher risks for corruption and mismanagement (ACCA, 2021).
As Transparency International (TI 2020) highlights, extraordinary outbreaks like the COVID19 pandemic also give rise to opportunities for corruption, which might eventually undermine the response to the pandemic. Such corruption can happen in forms, ranging from underreporting of cases to gross irregularities in disbursements of various financial stimulus packages offered by governments
Pneumoperitoneum, pneumoretroperitoneum, pneumomediastinum and extensive subcutaneous emphysema in a patient with ulcerative colitis: a case report.
Abstract INTRODUCTION:
Pneumo-mediastinum and subcutaneous emphysema are rare presentations of lower gastrointestinal tract perforation. PRESENTATION OF CASE:
We are presenting the case of a middle aged man diagnosed with UC who presented with dyspnea and subcutaneous emphysema, attributed to multiple perforations including the stomach and colon. CASE DISCUSSION:
Patients with ulcerative colitis (UC) are at an increased risk of perforations due to friability of colonic mucosa given the chronic inflammation and relapsing flares. Chronic use of steroids further predisposes to stress ulcers. These pathologies sometimes coexist and identification of each is crucial for the appropriate treatment plan. CONCLUSION:
The case allows for a learning opportunity focusing on coexisting pathologies which may be differentiated based on anatomical knowledge and patient presentation.
Copyright © 2015 The Authors. Published by Elsevier Ltd.. All rights reserve
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