nils-herrmann/clean_scirepeval huggingface dataset:
Thermal transport properties of antimonene: an ab initio study.
Venue: Physical chemistry chemical physics PCCP

Searching for low thermal conductivity materials is crucial for thermoelectric devices. Here we report on the phonon transport properties of recently fabricated single layer antimony, antimonene [Ares, et al.  2016, 28, 6332] Ab initio calculations in combination with the Boltzmann transport equation (BTE) for phonons show that antimonene has a low lattice thermal conductivity (15.1 W m 1 K 1 at 300 K) indicating its potential thermoelectric applications. The low lattice thermal conductivity is due to its small group velocity, low Debye temperature and large buckling height. We also investigate in detail the mode contributions to total thermal conductivity and find at low frequency that the longitudinal acoustic (LA) branch dominates the thermal conductivity. Moreover, we show that the lattice thermal conductivity of antimonene can further be reduced by minimizing the sample size. Our findings open the field for thermoelectric applications based on antimonene.
Myocardial infarction following a bee sting: A case report of Kounis syndrome
Venue: Annals of cardiac anaesthesia

In this case report study a 41 year old man envenomed by a bee sting and diagnosed as Kounis syndrome secondary to hymenoptera envenomation. The patient developed a typical course of myocardial infarction, but the electrocardiogram changes were reversed to almost normal limits. He had a nonsignificant mild lesion in the proximal port of right coronary artery in coronary angiography. The case recovered and discharged after 6 days hospitalization. The clinical implications and pathophysiology of this dangerous association are discussed.
A Call for sting treatment protocol: Case report of a 3 year old with massive bee sting resulting in acute kidney injury

Acute Kidney Injury in children following bee sting envenomation is rare and survival is hinged on early recognition and prompt appropriate management. This report is aimed at raising awareness among healthcare workers, of one of the systemic effects of massive bee sting and the need to develop sting treatment protocol. A three year old preschooler was attacked by a swarm of bees, receiving over 150stings. Initial clinical features were allergic response involving the head, face and tongue for which he had first aid in a primary healthcare facility and thereafter sent home. Few hours later he developed clinical features of intravascular haemolysis, rhabdomyolysis, hypertension and acute renal failure. Laboratory findings were in keeping with clinical presentation. Despite supportive management, serum biochemistry worsened necessitating haemodialysis. Massive bee sting envenomation can cause systemic reactions and organ dysfunctions. To improve the overall clinical outcome, sting treatment protocol is advocated.  Bee sting envenomation, acute kidney injury, sting treatment protocol, rhabdomyolysis, myoglobinuria, haemodialysis.
Double edged sword effect of IL 1b on the osteogenesis of periodontal ligament stem cells via crosstalk between the NF kB, MAPK and BMP/Smad signaling pathways
Venue: Cell Death and Disease

Microenvironmental conditions can interfere with the functional role and differentiation of mesenchymal stem cells (MSCs) Recent studies suggest that an inflammatory microenvironment can significantly impact the osteogenic potential of periodontal ligament stem cells (PDLSCs) but the precise effects and mechanisms involved remain unclear. Here, we show for the first time that interleukin 1b (IL 1b) has dual roles in the osteogenesis of PDLSCs at concentrations ranging from physiologically healthy levels to those found in chronic periodontitis. Low doses of IL 1b activate the BMP/Smad signaling pathway to promote the osteogenesis of PDLSCs, but higher doses of IL 1b inhibit BMP/Smad signaling through the activation of nuclear factor kB (NF kB) and mitogen activated protein kinase (MAPK) signaling, inhibiting osteogenesis. These results demonstrate that crosstalk between NF kB, MAPK and BMP/Smad signaling mediates this dual effect of IL 1b on PDLSCs. We also show that the impaired osteogenesis of PDLSCs results in more inflammatory cytokines and chemokines being released, inducing the chemotaxis of macrophages, which further clarifies the role of PDLSCs in the pathogenesis of periodontitis.
Diagnostic accuracy of a combination of salivary hemoglobin levels, self report questionnaires, and age in periodontitis screening
Venue: Journal of periodontal implant science

This study evaluated the predictive performance of a combination of self report questionnaires, salivary hemoglobin levels, and age as a non invasive screening method for periodontitis.  The periodontitis status of 202 adults was examined using salivary hemoglobin levels, responses to 10 questions on a self report questionnaire, and the Community Periodontal Index (CPI) The ability of those two variables and the combination thereof with age to predict the presence of CPI scores of 3 4 and 4 was assessed using logistic regression and receiver operating characteristic (ROC) curve analysis.  CPI scores of 3 4 and 4 were present among 79.7% and 46.5% of the sample, respectively. The area under the ROC curves (AUROCs) of salivary hemoglobin levels for predicting prevalence of CPI scores of 3 4 and 4 were 0.63 and 0.67, respectively (with sensitivity values of 71% and 60% and specificity values of 56% and 72% respectively) Two distinct sets of five questions were associated with CPI scores of 3 4 and 4, with AUROCs of 0.73 and 0.71, sensitivity values of 76% and 66% and specificity values of 63% and 69% The combined model incorporating both variables and age showed the best predictive performance, with AUROCs of 0.78 and 0.76, sensitivity values of 71% and 65% and specificity values of 68% and 77% for CPI scores of 3 4 and 4, respectively.  The combination of salivary hemoglobin levels and self report questionnaires was shown to be a valuable screening method for detecting periodontitis.
Diagnosis of Aortic Graft Infection: A Case Definition by the Management of Aortic Graft Infection Collaboration (MAGIC)
Venue: European journal of vascular and endovascular surgery the official journal of the European Society for Vascular Surgery

The management of aortic graft infection (AGI) is highly complex and in the absence of a universally accepted case definition and evidence based guidelines, clinical approaches and outcomes vary widely. The objective was to define precise criteria for diagnosing AGI.  A process of expert review and consensus, involving formal collaboration between vascular surgeons, infection specialists, and radiologists from several English National Health Service hospital Trusts with large vascular services (Management of Aortic Graft Infection Collaboration [MAGIC] produced the definition.  Diagnostic criteria from three categories were classified as major or minor. It is proposed that AGI should be suspected if a single major criterion or two or more minor criteria from different categories are present. AGI is diagnosed if there is one major plus any criterion (major or minor) from another category. (i) Clinical/surgical major criteria comprise intraoperative identification of pus around a graft and situations where direct communication between the prosthesis and a nonsterile site exists, including fistulae, exposed grafts in open wounds, and deployment of an endovascular stent graft into an infected field (e.g. mycotic aneurysm) minor criteria are localized AGI features or fever =38degC, where AGI is the most likely cause. (ii) Radiological major criteria comprise increasing perigraft gas volume on serial computed tomography (CT) imaging or perigraft gas or fluid =7 weeks and =3 months, respectively) postimplantation; minor criteria include other CT features or evidence from alternative imaging techniques. (iii) Laboratory major criteria comprise isolation of microorganisms from percutaneous aspirates of perigraft fluid, explanted grafts, and other intraoperative specimens; minor criteria are positive blood cultures or elevated inflammatory indices with no alternative source.  This AGI definition potentially offers a practical and consistent diagnostic standard, essential for comparing clinical management strategies, trial design, and developing evidence based guidelines. It requires validation that is planned in a multicenter, clinical service database supported by the Vascular Society of Great Britain Ireland.
WarpMap: Accurate and Efficient Indoor Location by Dynamic Warping in Sequence Type Radio Map
Venue: SECON

Radio map based method has been widely used for indoor location and navigation, but remaining key challenges are: 1) laborious efforts to calibrate a fine grained radio map, and 2) the locating result inaccuracy and not robust problems due to random signal strength (RSS) noises. An efficient way to overcome these problems is to collect RSS signatures along indoor paths and utilize sequence matching to enhance the location robustness. But, due to problems of indoor path combinational explosion, random RSS loss during movement, and moving speed disparity during online and offline phases, how to exploit sequence matching in radio map remains difficult. This paper proposes WarpMap, an efficient sequence type radio map model and an accurate indoor location method by dynamic warping. Its distinct features include: 1) an undirected graph model (Trace graph) for efficiently calibrating and storing sequence type radio map, which overcomes the path combinational explosion and RSS miss of detection problems; 2) an efficient sub sequence dynamic time warping (SDTW) algorithm for accurate and efficient on line locating. We show SDTW can tolerate random RSS disparities at discrete points and handle the moving speed differences in on line and off line phases. The impacts of different warping distance functions, RSS preprocessing techniques were also investigated. Extensive experiments in office environments verified the efficiency and accuracy of WarpMap, which can calibrated within ten minutes by one person for 1100 m2 area and provides overall nearly 20% accuracy improvements than the state of the art of radio map method.
WarpMap: Accurate and Efficient Indoor Location by Dynamic Warping in Sequence Type Radio Map
Venue: 2016 13th Annual IEEE International Conference on Sensing, Communication, and Networking (SECON)

Radio map based method has been widely used for indoor location and navigation, but remaining key challenges are: 1) laborious efforts to calibrate a fine grained radio map, and 2) the locating result inaccuracy and not robust problems due to random signal strength (RSS) noises. An efficient way to overcome these problems is to collect RSS signatures along indoor paths and utilize sequence matching to enhance the location robustness. But, due to problems of indoor path combinational explosion, random RSS loss during movement, and moving speed disparity during online and offline phases, how to exploit sequence matching in radio map remains difficult. This paper proposes WarpMap, an efficient sequence type radio map model and an accurate indoor location method by dynamic warping. Its distinct features include: 1) an undirected graph model (Trace graph) for efficiently calibrating and storing sequence type radio map, which overcomes the path combinational explosion and RSS miss of detection problems; 2) an efficient sub sequence dynamic time warping (SDTW) algorithm for accurate and efficient on line locating. We show SDTW can tolerate random RSS disparities at discrete points and handle the moving speed differences in on line and offline phases. The impacts of different warping distance functions, RSS preprocessing techniques were also investigated. Extensive experiments in office environments verified the efficiency and accuracy of WarpMap, which can calibrated within ten minutes by one person for 1100m2 area and provides overall nearly 20% accuracy improvements than the state of the art of radio map method.
Effects of a high fat diet on intestinal microbiota and gastrointestinal diseases
Venue: World journal of gastroenterology

Along with the rapid development of society, lifestyles and diets have gradually changed. Due to overwhelming material abundance, high fat, high sugar and high protein diets are common. Numerous studies have determined that diet and its impact on gut microbiota are closely related to obesity and metabolic diseases. Different dietary components affect gut microbiota, thus impacting gastrointestinal disease occurrence and development. A large number of related studies are progressing rapidly. Gut microbiota may be an important intermediate link, causing gastrointestinal diseases under the influence of changes in diet and genetic predisposition. To promote healthy gut microbiota and to prevent and cure gastrointestinal diseases, diets should be improved and supplemented with probiotics.
Towards 5G Health for Medical Video Streaming over Small Cells

The next generation of "m health technologies" is an evolving topic that is very much related to two drivers; the first is the evolution of Information and Communications technologies (ICT) in particular mobile technologies and their capabilities. Second are the challenges facing the health and social care sector in terms of demographic change and the need for the provision of a more secure quality integrated patient centered care. 4G Health has addressed the long term evolution of m health and the inclusion of personalized care in the model of m health. 4G health is developed around the concept of Fourth generation (4G) mobile communication systems. M Health is still evolving to beyond 4G Health to cater for the above challenges and benefit from the future technologies of fifth generation (5G) which means that 5G networks will revolutionize m health systems by supporting scenarios not supported by existing 4G networks (e.g. high resolution m health data/image/video from high speed vehicles)
Assessment of joint space and arthritic changes in temporomandibular joint as visualized on cone beam computed tomography scan

Cone beam computed tomography (CBCT) has been recognized as a reliable method for the examination of the osseous components of the temporomandibular joint (TMJ)  The aim of this study is to assess the joint space and arthritic changes in TMJ, as visualized on the CBCT scan.  The study comprised 60 patients attending the outpatient department (120 joints) with temporomandibular dysfunction. All the patients were subjected to CBCT scan using Planmeca Promax 3D Mid machine. TMJ evaluation included bony changes (flattening, erosion, osteophytes, sclerosis, Ely's cyst and joint mice) and measurement of joint space (normal, increased, reduced, bony contact) between the condyle and the mandibular fossa.  No statistically significant differences were found between symptomatic and asymptomatic joints and radiographic arthritic changes (P 0.437) and distribution of osseous changes in condyle among the symptomatic and asymptomatic joints (P 0.428) Statistically significant difference was found between diminution in joint space with increased mean age (P 0.001)  The radiographic findings may not truly reflect the clinical signs and symptoms. Asymptomatic joints may present with radiographic changes and few of the symptomatic joints may fail to reveal radiographic changes. Radiographically manifested osseous changes, i.e. flattening, osteophyte, sclerosis, erosion etc. had no significant correlation with the symptomatic and asymptomatic joints. In older age groups, patients are expected to have severe progressive degenerative bony changes than those in patients of younger age groups.
Development of an advanced microfluidic micropipette aspiration device for single cell mechanics studies.
Venue: Biomicrofluidics

Various micro engineered tools or platforms have been developed recently for cell mechanics studies based on acoustic, magnetic, and optical actuations. Compared with other techniques for single cell manipulations, microfluidics has the advantages with simple working principles and device implementations. In this work, we develop a multi layer microfluidic pipette aspiration device integrated with pneumatically actuated microfluidic control valves. This configuration enables decoupling of cell trapping and aspiration, and hence causes less mechanical perturbation on trapped single cells before aspiration. A high trapping efficiency is achieved by the microfluidic channel design based on fluid resistance model and deterministic microfluidics. Compared to conventional micropipette aspiration, the suction pressure applied on the aspirating cells is highly stable due to the viscous nature of low Reynolds number flow. As a proof of concept of this novel microfluidic technology, we built a microfluidic pipette aspiration device with 2 x 13 trapping arrays and used this device to measure the stiffness of a human breast cancer cell line, MDA MB 231, through the observation of cell deformations during aspiration. As a comparison, we studied the effect of Taxol, a FDA approved anticancer drug on single cancer cell stiffness. We found that cancer cells treated with Taxol were less deformable with a higher Young's modulus. The multi layer microfluidic pipette aspiration device is a scalable technology for single cell mechanophenotyping studies and drug discovery applications.
Design of miniaturized reconfigurable slot antenna using varactor diodes for cognitive radio systems
Venue: 2016 Fourth International Japan Egypt Conference on Electronics, Communications and Computers (JEC ECC)

In this paper, a new compact tunable microstrip line fed slot antenna is proposed for interweave cognitive radio (CR) front end systems. The proposed antenna utilized four varactor diodes to control the antenna resonant frequency. The resonant frequency of the antenna can be electronically tuned by changing the effective electrical length of the resonant slot, which is accomplished by employing the varactor diodes inside the slot. Moreover, the simple biasing of the varactor diodes has a small effect on the antenna performance. Simulation results show that the proposed antenna is capable of frequency switching over a tuning range of 0.93 GHz from 1.83 to 2.76 GHz with 40.5 frequency tuning range. The proposed antenna has a miniaturized size of 25 x 30 x 0.762 mm3.
Design of Frequency Reconfigurable Antenna using Varactor Diode

In this paper, a frequency reconfigurable microstrip patch antenna is designed with microstrip feeding technique. The reconfigurable antenna is designed with one square patch and four truncated corners in order to tune for different frequencies. Varactor diode is used for switching operation in the proposed antenna. By changing the capacitance of the diode, the antenna can be reconfigured between various frequencies. The proposed antenna has been designed and simulated using Agilent Advanced Design System (ADS) EM simulator. The designed antenna exhibits a continuously tunable band from 1.3 to 1.7 GHz. This proposed antenna gives low return loss at all operating frequencies. The gain achieved by the proposed reconfigurable antenna is 52% more compared to the existing design.  Square patch, varactor diode, return loss, gain
The investigation of reconfigurable SIW filter using varactor diodes
Venue: 2016 IEEE 5th Asia Pacific Conference on Antennas and Propagation (APCAP)

This paper introduces a novel reconfigurable SIW filter for 4G applications by using varactor diodes. This SIW filter consists of two floating islands with two via holes that connected with two varactor diodes. This method allows designing SIW filter with the tunable centre frequency with a constant absolute bandwidth. The filter is designed through the simulation on a standard printed circuit board technology. The SIW filter at 2.097 GHz shows an insertion loss of 1.87 dB and 3 dB bandwidth of 163.39 MHz. SIW filter is used to obtain a good performance that suitable for integration with any reconfigurable planar structure. This investigation provides an alternative solution for reconfigurable SIW filter, particularly in 4G communication systems.
Robot Guidance Using Machine Vision Techniques in Industrial Environments: A Comparative Review
Venue: Sensors

In the factory of the future, most of the operations will be done by autonomous robots that need visual feedback to move around the working space avoiding obstacles, to work collaboratively with humans, to identify and locate the working parts, to complete the information provided by other sensors to improve their positioning accuracy, etc. Different vision techniques, such as photogrammetry, stereo vision, structured light, time of flight and laser triangulation, among others, are widely used for inspection and quality control processes in the industry and now for robot guidance. Choosing which type of vision system to use is highly dependent on the parts that need to be located or measured. Thus, in this paper a comparative review of different machine vision techniques for robot guidance is presented. This work analyzes accuracy, range and weight of the sensors, safety, processing time and environmental influences. Researchers and developers can take it as a background information for their future works.
Fundamentals of Spatial RF Energy Harvesting for D2D Cellular Networks
Venue: 2016 IEEE Global Communications Conference (GLOBECOM)

Energy efficiency is one of the major challenges of 5G networks. As data rates are expected to increase by 1000x from 4G to 5G, energy efficiency will need to improve by about the same amount. Recently, energy harvesting techniques have attracted lots of attention from the scientific community, due to their ability to increase network lifetime. More specific, energy harvesting from ambient radio frequency (RF) signals is of special importance, especially with the recent RF circuit advancements. In this paper, we consider a device to device (D2D) communication in underlay cellular networks, where D2D users reuse the spectrum occupied by cellular users. We introduce the concept of spatial RF energy harvesting, where D2D users harvest RF power from uplink cellular transmissions, if it exceeds a predesigned threshold, in a spatial region. Using tools from stochastic geometry, we obtain a closed form expression for the probability of activating RF power conversion circuit by making full use of spatial locations of ambient RF signals. Subsequently, we study the impact of RF energy harvesting region radius to harvest sufficient power on the signal to interference (SIR) ratio of D2D network. Simulation results provide insights for the required advancements to design highly efficient RF harvesting circuits.
A stochastic geometry analysis of RF energy harvesting based D2D communication in downlink cellular networks
Venue: 2016 1st India International Conference on Information Processing (IICIP)

RF energy harvesting and D2D communication technologies have the potential to provide energy and the spectrum replenishment for the wireless networks. In this paper, we propose a network model for the performance analysis of D2D communication with RF energy harvesting in a peer to peer simultaneous wireless information and power transfer (SWIPT) strategy with the RF transmitters. We use the stochastic geometry models such as Poisson point process (PPP) and the Ginibre Determinantal point process (DPP) for the distribution of the base stations, cellular and the D2D users in cellular network. The D2D users use one of the channel allocated to the cellular users during transmission by using the prioritize spectrum access policy (PSA) The proposed network model is simulating in the MATLAB for the performance analysis and the results are equated above 10,000 recitations. The results show that the DPP distribution is more effective in D2D communication with SWIPT transmission and energy harvesting than PPP.