gebhart/patrepeval huggingface dataset:
Tissue engineering a blood vessel substitute: the role of biomechanics (2000)

The engineering of a functional blood vessel substitute has for a quarter of a century been a "holy grail" within the cardiovascular research community. Such a substitute must exhibit long term patency, and the critical issues in this area in many ways are influenced by biomechanics. One of the requirements is that it must be non-thrombogenic, which requires an "endothelial-like" inner lining. It also must have mechanical strength, i.e. a burst pressure, sufficient to operate at arterial pressures. Ideally, however, it must be more than this. It also must have viscoelastic properties that match those of the native vessel being replaced. Finally, if it is to be able to adapt to changing blood flow conditions, it must exhibit vasoactivity, a function which in and of itself can be viewed as biomechanical in nature. To achieve this requires having, as part of the construct, vascular smooth muscle cells, which are contractile in nature and oriented in a circumferential direction. Only if an engineered blood vessel substitute possesses all of these functional characteristics, can one say that the functionality exhibited by a native vessel is being mimicked.
A 7.2 GSa/s, 14 Bit or 12 GSa/s, 12 Bit Signal Generator on a Chip in a 165 GHz ${\rm f}_{\rm T}$ BiCMOS Process (2012)

We present a complete signal generator with integrated digital-to-analog convertor (DAC) on a chip which can generate complex waveforms at up to 7.2 GSa/s with 14 bit resolution or at up to 12 GSa/s with 12 bit resolution. The 3 dB bandwidth is 4.4 GHz. The chip includes digital signal processing (DSP) logic for agile generation of wideband modulated RF signals (up to 480 MHz modulation bandwidth) as well as high fidelity chirp and continuous wave signals. There is also DSP for integral non-linearity error reduction and suppression of clock sub-harmonics. The DAC uses a segmented architecture with 4 unary most significant bits and an R/2R ladder for the 10 binary least significant bits. Distributed resampling is applied to all current sources to improve the dynamic performance. At 7.2 GSa/s it delivers at least 67 dB spurious free dynamic range (SFDR) across the whole Nyquist region and an SNR of 62 dB. It demonstrates - 157 dBc/Hz phase noise at 10 kHz offset from a 1 GHz carrier, 22 dB better than known synthesized signal generation instruments. The chip is built in a 165 GHz f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</sub> , 130 nm BiCMOS process and is packaged in a 780 ball BGA.
Machine learning based QoE prediction in SDN networks (2017)

Our work in this paper presents a prediction of quality of experience based on full reference parametric (SSIM, VQM) and application metrics (resolution, bit rate, frame rate) in SDN networks. First, we used DCR (Degradation Category Rating) as subjective method to build the training model and validation, this method is based on not only the quality of received video but also the original video but all subjective methods are too expensive, don't take place in real time and takes much time for example our method takes three hours to determine the average MOS (Mean Opinion Score). That's why we proposed novel method based on machine learning algorithms to obtain the quality of experience in an objective manner. Previous researches in this field help us to use four algorithms: Decision Tree (DT), Neural Network, K nearest neighbors KNN and Random Forest RF thanks to their efficiency. We have used two metrics recommended by VQEG group to assess the best algorithm: Pearson correlation coefficient r and Root-Mean-Square-Error RMSE. The last part of the paper describes environment based on: Weka to analyze ML algorithms, MSU tool to calculate SSIM and VQM and Mininet for the SDN simulation.
A Region-Based Matching Approach for 3D-Roof Reconstruction from HR Satellite Stereo Pairs (2003)

Abstract. This study is a part of a global project on urban scenes interpretation using high resolution satellite images. Actually, the research is focused on buildings and roads are used to delineate zones of interest. This study details automatic reconstruction of 3D facets using a region matching approach based on hierarchical segmentation of images. The novelty consists in dedicating algorithms to satellital context to make them more robust to noise and to deal with low stereopair Base to Height ratio. First of all, a hierarchical segmentation process is explained, then matching regions constraints are detailed. Afterwards, optimal cuts, which corresponds to a set of regions that are likely to represent building rooftops, are processed in both hierarchies. Cuts are processed given matching scores and using regions planarity constraint. In the third part, global matching of both cuts is processed in order to obtain final matchings which will allow 3D scene reconstruction. Eventually, some results are presented.
Ion Specific Effects on the Mutual Solubilities of Water and Hydrophobic Ionic Liquids (2008)

Ion specific effects on the mutual solubilities between hydrophobic ionic liquids (ILs) and water are complex and not fully understood. The aim of this work is to obtain further evidence about the molecular mechanism behind this phenomenon by evaluating the effect of a large series of inorganic and organic salts on the mutual solubilities of water and the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C(4)mim][Tf(2)N]. The magnitudes of the salting-in and salting-out effects were assessed by changing either the cation or the anion, in a series of salts, as well as the salt concentration. It was observed that the influence of the ions on the solubility followed the Hofmeister series. Both salting-in and salting-out effects were observed and they showed to be dependent on both the nature of the salt and its concentration, while the pH had only a marginal effect on the studied solubilities. On the basis of the solubility changes of the ionic liquid in water in the presence of salts and on NMR spectroscopic data, it will be shown that salting-out inducing ions (high charge density) and salting-in inducing ions (low charge density) act through different mechanisms. While the former act mainly through an entropic effect resulting from the formation of water-ion hydration complexes which cause the dehydration of the solute and the increase of the surface tension of the cavity, the salting-in results from a direct ion binding of the low charge density ions to the hydrophobic moieties of the solute.
A High-Quality Recording Power Amplifier (1947)

A power amplifier which provides high-quality performance because of the utilization of negative feedback over three stages is described. The mechanical design presents a novel and convenient front service arrangement.
Liquid Phase Deposition of Amorphous Carbon and Carbon Nitride Films (2009)

Liquid phase deposition of amorphous carbon (a-C) and carbon nitride (CNx) film has been attempted by means of electrolysis of organic liquids. The deposition of a-C film is achieved by applying a DC bias voltage to substrate immersed in methanol. Smooth and homogeneous a-C films are deposited on specific substrate materials such as Si, Ti, and Al. The deposition of CNx films are carried out by using nitrogen-containing electrolyte such as acrylonitrile (CH2CHCN). Continuous and uniform films are obtained with the application of both negative and positive bias voltages. The atomic ratios of nitrogen to carbon in the grown films are estimated as 0.16–0.28. Those results demonstrate the feasibility of using liquid deposition techniques for the production of carbon related materials. [DOI: 10.1380/ejssnt.2009.102]
Extracellular component hyaluronic acid and its receptor Hmmr are required for epicardial EMT during heart regeneration (2015)

HA and Hmmr are required for activated epicardial cell EMT and migration involving the FAK/Src pathway for proper heart regeneration.
Wide dynamic range and high SNR self-reset CMOS image sensor using a Schmitt trigger (2008)

A simple and robust self-reset image sensor design using Schmitt trigger circuit is presented. Offset and reset delay accumulations are compensated effectively so that a self-reset CMOS image sensor can exploit signal-to-noise ratio (SNR) improvement along with its wide dynamic range under multiple resets. It has been designed and simulated using 0.18 mum CMOS technology to show SNR improvement of 22.8 dB with 1000 self-resets. It also provides low power consumption and fewer components for pixel-level image sensor design.
Diabetic nephropathy--a review of the natural history, burden, risk factors and treatment. (2004)

The earliest clinical evidence of diabetic nephropathy is microalbuminuria. Progression from microalbuminuria to overt nephropathy occurs in 20-40% within a 10-year period with approximately 20% of these patients progressing to end-stage renal disease. End-stage renal disease develops in 50% of type-1 diabetes patients with overt nephropathy within 10 years and in more than 75% by 20 years in the absence of treatment. In type-2 diabetes, a greater proportion of patients have microalbuminuria and overt nephropathy at or shortly after diagnosis of diabetes. The incidence of diabetes is increasing worldwide, with subsequent increase in the incidence of diabetic nephropathy. The risk factors identified in the development of DN from longitudinal and cross-sectional studies include race, genetic susceptibility, hypertension, hyperglycemia, hyperfiltration, smoking, advanced age, male sex, and high-protein diet. Treatment interventions in diabetic nephropathy include glycemic control, treatment of hypertension, hyperlipidemia, cessation of smoking, protein restriction, and renal replacement therapy. Multifactorial approach includes combined therapy targeting hyperglycemia, hypertension, microalbuminuria, and dyslipidemia.
Hydrogenolysis of Glycerol to 1,2‐Propanediol over Ru–Cu Bimetals Supported on Different Supports (2011)

Abstract Glycerol is a low‐cost and renewable resource, and its utilization is of great interest for chemical industry and sustainable development. In this work, a series of Ru–Cu bimetallic catalysts were prepared using different supports in an attempt to develop highly efficient catalysts. Hydrogenolysis of aqueous solution of glycerol was performed with the supported Ru–Cu catalysts. The bimetallic catalysts were very efficient for catalyzing the hydrogenolysis of glycerol compared with the corresponding monometallic catalysts. One hundred percent of glycerol conversion and 78.5% of 1,2‐propanediol yield could be achieved at 180°C and 8 MPa.
Synthesis and Application of Chiral<i>P</i>,<i>N</i>-Ligands with<i>Pseudo-Meso</i>and<i>Pseudo-C</i><sub>2</sub>Symmetry (2001)

[structure: see text] Two diastereoisomeric P,N-ligands, (S,S)-1 and (R,S)-1, were synthesized and assessed in palladium-catalyzed allylic alkylations. With rac-1,3-diphenylpropenyl acetate as substrate, ligand (S,S)-1, with "pseudo-C(2)" symmetry, exhibited higher reactivity and higher enantioselectivity than the "pseudo-meso" ligand (R,S)-1, whereas reversal reactivity and selectivity were observed with rac-3-cyclohexenyl acetate.
Synthesis and Characterization of Esterified Poly[(aryloxy)phosphazene]s (1997)

Four new phosphazene polymers were synthesized using an esterification methodology. It was found that poly[bis(4-carboxylatophenoxy)phosphazene] reacts with neat alcohols and catalytic acid at reflux to form polymers with varying chemical and physical properties. Esters were prepared from the following alcohols; 2-methoxyethanol, 2,2‘-methoxyethoxyethanol, 2-ethoxyethanol, and 1-butanol. The resulting new polymers were characterized using nuclear magnetic resonance (NMR) spectroscopy and were found to have the expected ester pendant groups homogeneously substituted onto the phosphorus−nitrogen backbone. Laser light scattering (LLS) was used to determine that during the modification process molecular weight of the polymer is conserved, suggesting that under the conditions of the esterification process no chain scission occurs.
High-brightness 980-nm pump lasers based on the Novalux extended cavity surface-emitting laser (NECSEL) concept (2003)

We describe design, fabrication and performance of novel, electrically pumped, vertical compound cavity InGaAs lasers emitting at 980 and 920 nm. The concept is scalable and has been demonstrated using monolithic low power (~10 mW) devices all the way to high power extended cavity devices which have demonstrated 1 W cw multi-mode and 0.5 W cw in a TEM<sub>00</sub> mode and a single frequency, with 90% coupling efficiency into a single-mode fiber. We also describe uncooled vertical compound cavity lasers in TO-56 can packages which produce 50-100 mW of fiber coupled power. Finally, recent developments in intracavity frequency doubling are summarized.
Inhibition of lignin formation by L-alpha-aminooxy-beta-phenylpropionic acid, an inhibitor of phenylalanine ammonia-lyase. (1983)

Mungbean (Vigna radiata (L.) Wilczek) seedlings grown for 9 days on filter paper soaked with 0.3 to 1 mM L-alpha-aminooxy-beta-phenylpropionic acid (AOPP), a potent inhibitor of L-phenylalanine ammonia-lyase, had a greatly reduced anthocyanin content, and the cell walls of the xylem vessels did not stain with the phloroglucinol/HCl or safranine/astrablue reagents indicating the absence of lignin-like material. Furthermore, vanillin was detectable in nitro-benzene-oxidized lignin preparations only from control seedlings, but not from AOPP-treated seedlings. Scanning electron microscopy of hypocotyl cross sections revealed collapsed xylem vessels in seedlings grown in the presence of AOPP indicating that lignin is required for resistance against the tensile forces in the conducting cells of the xylem. AOPP enhanced the growth of cultured cells of Lonicera prolifera Rehd. while it inhibited the production of extracellular material that gave a positive reaction with phloroglucinol/HCl.
Physical association of moesin and CD46 as a receptor complex for measles virus (1995)

Recently, two cellular membrane proteins, the membrane cofactor protein CD46 and the membrane-organizing external spike protein, moesin, have been identified to be functionally associated with measles virus (MV) infectivity of cells. We investigated the functional consequences of binding of monoclonal antibodies to both molecules individually and combined on MV attachment, fusion, and plaque formation and the putative direct physical interaction of moesin and CD46. We found that antibodies to moesin or CD46 separately inhibited MV-cell interactions to a high percentage in the plaque test, by approximately 85 and 75%, respectively. The inhibition by combinations of antibodies was additive at low concentrations and complete at high concentrations. This indicates that similar sites of interaction were blocked by steric hindrance. Furthermore, antimoesin antibodies blocked the infection of CD46-negative mouse cell lines with MV. Chemical cross-linking of cell surface proteins indicated the close proximity of CD46 and moesin in the membrane of human cells, and coimmunoprecipitation of moesin with CD46 suggested their physical interaction. Immunohistochemically by electron microscopy, CD46 and moesin were found to be localized at sites of the cellular membrane where MV particles adsorbed. These data support a model of direct interaction of CD46 and moesin in the cellular membrane and suggest that this complex is functionally involved in the uptake of MV into cells.
Prophetic Medicine-Nigella Sativa (Black cumin seeds) – Potential herb for COVID-19? (2020)

Coronavirus disease-19 (COVID-19) is caused by the severe acute respiratory syndrome coronavirus 2 (SARS CoV-2). Currently, the management of patients with COVID-19 depends mainly on repurposed drugs which include chloroquine, hydroxychloroquine, lopinavir/ritonavir, ribavirin, remdesivir, favipiravir, umifenovir, interferon-α, interferon-β and others. In this review, the potential of Nigella sativa (black cumin seeds) to treat the patients with COVID-19 analyzed, as it has shown to possess antiviral, antioxidant, anti-inflammatory, anticoagulant, immunomodulatory, bronchodilatory, antihistaminic, antitussive, antipyretic and analgesic activities. PubMed, Google Scholar, Science Direct, Directory of open access journals (DOAJ) and reference lists were searched to identify articles associated with antiviral and other properties of N.sativa related to the signs and symptoms of COVID-19. Various randomized controlled trials, pilot studies, case reports and in vitro and in vivo studies confirmed that N.sativa has antiviral, antioxidant, anti-inflammatory, immunomodulatory, bronchodilatory, antihistaminic, antitussive activities related to causative oraganism and signs and symptoms of COVID-19. <i>N. sativa</i> could be used as an adjuvant therapy along with repurposed conventional drugs to manage the patients with COVID-19.
Diabetic retinopathy is associated with an increased incidence of cardiovascular events in Type 2 diabetic patients (2008)

Diabetic retinopathy (especially in its more advanced stages) is associated with an increased CVD incidence independent of other known cardiovascular risk factors.
Development of a 1 Mbps low power acoustic modem for underwater communications (2014)

Underwater wireless communication systems are becoming a priority in terms of research and technological development due to the increasing demand for exploring the oceans in areas such as pharmaceutical, oil, minerals, environmental and biodiversity. This demand is increasing exponentially with the need for high data rate and near-real-time communications. In this work an underwater low power acoustic modem to operate over tens of meters, achieving a maximum data rate of 1 Mbps, is presented. This solution allows for reprogramming the digital signal processing block enabling the use of different types of digital modulations in order to improve the modem's performance. The system is based on a poly(vinylidene fluoride) PVDF ultrasonic emitter transducer which is capable of sending high quality signals needed for digital modulations with high symbol rates per carrier period. BPSK, BFSK and OOK modulations have been tested. The results registered were 3×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−3</sup> BER with 1 Mbps OOK, 2.3×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−5</sup> with 512 kbps and 1×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−8</sup> with 256 kbps.
Designing multi-leader-based Allgather algorithms for multi-core clusters (2009)

The increasing demand for computational cycles is being met by the use of multi-core processors. Having large number of cores per node necessitates multi-core aware designs to extract the best performance. The Message Passing Interface (MPI) is the dominant parallel programming model on modern high performance computing clusters. The MPI collective operations take a significant portion of the communication time for an application. The existing optimizations for collectives exploit shared memory for intra-node communication to improve performance. However, it still would not scale well as the number of cores per node increase. In this work, we propose a novel and scalable multi-leader-based hierarchical Allgather design. This design allows better cache sharing for Non-Uniform Memory Access (NUMA) machines and makes better use of the network speed available with high performance interconnects such as InfiniBand. The new multi-leader-based scheme achieves a performance improvement of up to 58% for small messages and 70% for medium sized messages.
Context-aware and multilingual information extraction for a tourist recommender system (2011)

We present information extraction for a semantic personalised tourist recommender system. The main challenges in this setting are that information is spread across various information sources, it is usually stored in proprietary formats and is available in different languages in varying degrees of accuracy. We address the mentioned challenges and describe our realization and ideas how to deal with each of them. In our paper we describe scraping and extracting keywords from different web portals with different languages, how we deal with missing multi-lingual data, and how we identify the same objects from different sources.
Sugar-Controlled Aggregate Formation in Boronic Acid-Appended Porphyrin Amphiphiles (1996)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTSugar-Controlled Aggregate Formation in Boronic Acid-Appended Porphyrin AmphiphilesSusumu Arimori, Masayuki Takeuchi, and Seiji ShinkaiView Author Information Department of Chemical Science & Technology, Faculty of Engineering, Kyushu University,Fukuoka 812, Japan Cite this: J. Am. Chem. Soc. 1996, 118, 1, 245–246Publication Date (Web):January 10, 1996Publication History Received29 September 1995Published online10 January 1996Published inissue 1 January 1996https://pubs.acs.org/doi/10.1021/ja953323hhttps://doi.org/10.1021/ja953323hrapid-communicationACS PublicationsCopyright © 1996 American Chemical SocietyRequest reuse permissionsArticle Views990Altmetric-Citations59LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Absolute configuration,Amphiphiles,Hydrophilicity,Inorganic carbon compounds,Pyrroles Get e-Alerts
Terahertz time-domain spectroscopy of crushed wheat grain (2005)

The terahertz time-domain spectroscopy (THz-TDS) is used to measure absorption spectra in crushed wheat grain over the frequency range of 0.1-2.0 THz. A number of well resolved absorption peaks are observed for dry, 12%, 14% and 18% moisture content levels. Subtracting the transmission signal spectra of the dry flour from that of the wetted flour provides a calibrated result which relates attenuation to moisture content level.
Characterization of the Lipopolysaccharides and Capsules of <i>Shewanella</i> spp (2002)

Electron microscopy, sodium dodecyl sulfate-polyacrylamide gel electrophoresis with silver staining and (1)H, (13)C, and (31)P-nuclear magnetic resonance (NMR) were used to detect and characterize the lipopolysaccharides (LPSs) of several Shewanella species. Many expressed only rough LPS; however, approximately one-half produced smooth LPS (and/or capsular polysaccharides). Some LPSs were affected by growth temperature with increased chain length observed below 25 degrees C. Maximum LPS heterogeneity was found at 15 to 20 degrees C. Thin sections of freeze-substituted cells revealed that Shewanella oneidensis, S. algae, S. frigidimarina, and Shewanella sp. strain MR-4 possessed either O-side chains or capsular fringes ranging from 20 to 130 nm in thickness depending on the species. NMR detected unusual sugars in S. putrefaciens CN32 and S. algae BrY(DL). It is possible that the ability of Shewanella to adhere to solid mineral phases (such as iron oxides) could be affected by the composition and length of surface polysaccharide polymers. These same polymers in S. algae may also contribute to this opportunistic pathogen's ability to promote infection.