gebhart/patrepeval huggingface dataset:
Structure and proton conduction in sulfonated poly(ether ether ketone) semi-permeable membranes: a multi-scale computational approach (2019)

The design of polymeric membranes for proton or ionic exchange highly depends on the fundamental understanding of the physical and molecular mechanisms that control the formation of the conduction channels. There is an inherent relation between the dynamical structure of the polymeric membrane and the electrostatic forces that drive membrane segregation and proton transport. Here, we used a multi-scale computational approach to analyze the morphology of sulfonated poly(ether ether ketone) membranes at the mesoscale. A self-consistent description of the electrostatic phenomenon was adopted, where discrete polymer chains and a continuum proton field were embedded in a continuum fluid. Brownian dynamics was used for the evolution of the suspended polymer molecules, while a convection-diffusion transport equation, including the Nernst-Planck diffusion mechanism, accounted for the dynamics of the proton concentration field. We varied the polymer concentration, the degree of sulfonation and the level of confinement to find relationships between membrane structure and proton conduction. Our results indicate that the reduced mobility of polymer chains, at concentrations above overlap, and a moderate degree of sulfonation - i.e., 30% - are essential elements for membrane segregation and proton domain connectivity. These conditions also ensure that the membrane structure is not affected by size or by potential gradients. Importantly, our analysis shows that membrane conductivity and current are linearly dependent on polymer concentration and quadratically dependent on the degree of sulfonation. We found that the optimal polymeric membrane design requires a polymer concentration above overlap and a degree of sulfonation around 50%. These conditions promote a dynamical membrane morphology with a constant density of proton channels. Our results and measurements agree with previous experimental works, thereby validating our model and observations.
Semi-Definite Programming by Perceptron Learning (2003)

We present a modified version of the perceptron learning algorithm (PLA) which solves semidefinite programs (SDPs) in polynomial time. The algorithm is based on the following three observations: (i) Semidefinite programs are linear programs with infinitely many (linear) constraints; (ii) every linear program can be solved by a sequence of constraint satisfaction problems with linear constraints; (iii) in general, the perceptron learning algorithm solves a constraint satisfaction problem with linear constraints in finitely many updates. Combining the PLA with a probabilistic rescaling algorithm (which, on average, increases the size of the feasable region) results in a probabilistic algorithm for solving SDPs that runs in polynomial time. We present preliminary results which demonstrate that the algorithm works, but is not competitive with state-of-the-art interior point methods. 1
Early Use of Remote Dielectric Sensing After Hospitalization to Reduce Heart Failure Readmissions (2020)

ReDS-guided HF therapy during RFU after HF hospitalization may be associated with lower risk of 30 day readmission.
Self-aligned graphene field-effect transistors with polyethyleneimine doped source/drain access regions (2012)

We report a method of fabricating self-aligned, top-gated graphene field-effect transistors (GFETs) employing polyethyleneimine spin-on-doped source/drain access regions, resulting in a 2X reduction of access resistance and a 2.5X improvement in device electrical characteristics, over undoped devices. The GFETs on Si/SiO2 substrates have high carrier mobilities of up to 6300 cm2/Vs. Self-aligned spin-on-doping is applicable to GFETs on arbitrary substrates, as demonstrated by a 3X enhancement in performance for GFETs on insulating quartz substrates, which are better suited for radio frequency applications.
In-vivo Tierversuchsersatzmodell zur präklinischen Tumordiagnostik: PET-MR im Hühnerembryo (2020)

Ziel/Aim Tierstudien zur Evaluierung neuer Tumortracer sind aufgrund gesetzlicher Vorschriften sehr aufwendig und können nur mit erheblicher zeitlicher Verzögerung umgesetzt werden. Ziel war es, ein in-vivo Ersatzmodell zu etablieren, welches mit den gängigen Tiermodellen für die Tumorbildgebung (Maus/Ratte) vergleichbar ist und ohne tierschutzrechtliche Auflagen in der Kleintier-PET-MRT eingesetzt werden kann.
NHS76/PEP2, a Fully Human Vasopermeability-Enhancing Agent to Increase The Uptake and Efficacy of Cancer Chemotherapy (2005)

NHS76/PEP(2) seems an excellent candidate to improve the value of standard chemotherapy drug treatment by virtue of its ability to increase the uptake of drugs in solid tumors selectively.
Improved conductivity and mechanism of carrier transport in zinc oxide with embedded silver layer (2008)

The effects of an embedded silver layer on the electrical and optical properties of zinc oxide (ZnO)/silver (Ag)/zinc oxide (ZnO) layered composite structures on polymer substrates have been investigated. We have engineered transparent conducting oxide structures with greatly improved conductivity. Optical and electrical properties are correlated with Ag thickness. Film thicknesses were determined using Rutherford backscattering spectrometry. Hall effect, four-point probe, and UV-Vis spectrophotometer analyses were used to characterize electrical and optical properties. The results show that carrier concentration, mobility, and conductivity increase with Ag thickness. Increasing Ag thickness from 8to14nm enhances sheet resistance and resistivity by six orders of magnitude. The optical transmittance of the composite structure decreases when compared to a single ZnO layer of comparable thickness. However, a composite with 12nm of Ag provides conductivity and transmittance values that are acceptable for optoelectronic devices. We describe of the influence of Ag thickness on electrical and optical properties of the ZnO∕Ag∕ZnO composite and propose a conduction mechanism for this system.
On the incorporation of shape priors into geometric active contours (2002)

A novel model for boundary determination that incorporates prior shape information into geometric active contours is presented. The basic idea of this model is to minimize the energy functional depending on the information of the image gradient and the shape of interest, so that the boundary of the object can be captured either by higher magnitude of the image gradient or by the prior knowledge of its shape. The level set form of the proposed model is also provided. We present our experimental results on some synthetic images, functional MR brain images, and ultrasound images for which the existing active contour methods are not applicable. The existence of the solution to the proposed minimization problem is also discussed.
Online Collaborative Filtering on Graphs (2016)

Existing approaches to designing recommendation systems with user feedback focus on settings where the number of items is small and/or admit some underlying structure. It is unclear, however, if these approaches extend to applications like social network news feeds and content-curation platforms, which have large and unstructured content pools and constraints on user-item recommendations. To this end, we consider the design of recommendation systems in content-rich setting—where the number of items and the number of item-views by users are of a similar order and an access graph constrains which user is allowed to see which item. In this setting, we propose recommendation algorithms that effectively exploit the access graph, and characterize how their performance depends on the graph topology. Our results demonstrate the importance of serendipity in exploration and how recommendation improves when the access graph has higher expansion; they also suggest reasons behind the success of simple algorithms like Twitter’s latest-first policy. From a technical perspective, our model presents a framework for studying explore-exploit trade-offs in large-scale settings, with potentially infinite number of items. We present algorithms with competitive-ratio guarantees under both finite-horizon and infinite-horizon settings; conversely, we demonstrate that naive policies can be highly suboptimal and also that in many settings, our results are orderwise optimal.
Taxonomy of Email Reputation Systems (2007)

Today a common goal in the area of email security is to provide protection from a wide variety of threats by being more predictive instead of reactive and to identify legitimate messages in addition to illegitimate messages. There has been previous work in the area of email reputation systems that can accomplish these broader goals by collecting, analyzing, and distributing email entities' past behavior characteristics. In this paper, we provide taxonomy that examines the required properties of email reputation systems, identifies the range of approaches, and surveys previous work.
The Effect of Two Trading Institutions on Price Expectations and the Stability of Supply-Response Lag Markets (2001)

This outstanding collection spanning three decades comprises a superb selection of Charles R. Plott’s work in experimental economics. Market Institutions and Price Discovery contains papers which define problems, create laboratory methodology and produce the first results in many areas of experimental economics.
Part 5: Targeting Cancer Pathways: Understanding Immune Checkpoints (2016)

This webinar is the fifth in a series focusing on the cancer pathways that support tumor development, the emerging research in identifying and targeting these pathways, and innovations in the development of increasingly effective cancer therapy options. Recent advances in our understanding of cancer have revealed that the disease cannot be understood through simple analysis of genetic mutations within cancerous cells. Instead, tumors should be considered as complex tissues in which the cancer cells communicate directly and indirectly with the surrounding cellular microenvironment and evolve traits that promote their own survival. In this webinar, we will explore how tumors exploit immune modulatory mechanisms to generate and thrive in their own immunosuppressive microenvironment. Further, we will examine how these mechanisms can be targeted to develop better therapeutic options. View the Webinar
Key adhesion molecules are present on long podia extended by hematopoietic cells (1999)

We describe a technique that provides a method of detecting surface receptors on thin cell membrane projections. These results support the likely role of these podia in cell migration and cell-cell communication.
Supermode suppression to below -130 dBc/Hz in a 10 GHz harmonically mode-locked external sigma cavity semiconductor laser (2003)

We demonstrate supermode suppression to levels below -125 dBc/Hz and -132 dBc/Hz using Fabry-Perot etalons with finesse values of 180 and 650, respectively, for a 10 GHz harmonically mode-locked external sigma cavity semiconductor laser. The laser was hybridly mode-locked using direct electrical modulation in a compact package without the need for an external modulator.
Phylogenetic studies of Nocardia species based on gyrB gene analyses (2009)

Phylogenetic analyses of 56 type species of Nocardia were conducted using the partial nucleotide sequences of the gyrase B-encoding gene (gyrB). The interspecies similarities of the gyrB gene for the 56 type species were 82.4-99.9 %, which corresponded to 270-2 nt differences in the partial gene sequences of approximately 1200 nt. In comparison with phylogenetic relationships, gyrB gene sequence information was generally consistent with that of 16S rRNA gene sequences with minor exceptions. However, the degree of divergence of the gyrB gene sequences was approximately 3.6 times greater than those of the 16S rRNA gene, suggesting a higher discriminative power of gyrB sequence information compared with 16S rRNA gene sequences for Nocardia species. The Nocardia type species were clustered based on gyrB sequence similarity values of 93.5 % and above. Among the 56 type species, 38 were distributed in 13 clusters, each comprising 2 to 7 species. The remaining 18 species were classified into an independent cluster, in which the similarity between each species and the other 55 Nocardia species was less than 93.5 %. Among the eight mycolic acid-containing actinomycete genera in the suborder Corynebacterineae, Nocardia was clearly differentiated from the other genera, such as Rhodococcus, by gyrB gene analyses (similarity values of gyrB sequences for Nocardia and Rhodococcus were 75-85 %), indicating that the gyrB gene is a useful alternative to the 16S rRNA gene for the determination of phylogenetic relationships between the genus Nocardia and the seven other actinomycete genera.
How to handle risky experiments producing uncertain phenomenon like cold fusion? (2019)

202203 bcwh
Results at 24 months from the prospective, randomized, multicenter Investigational Device Exemption trial of ProDisc-C versus anterior cervical discectomy and fusion with 4-year follow-up and continued access patients (2010)

Our 4-year data support that ProDisc-C TDR and ACDF are viable surgical options for symptomatic cervical disk disease. Although ACDF patients may be at higher risk for additional surgical intervention, patients in both groups show good clinical results at longer-term follow-up.
Searching for short-term techniques for the inference of electrical threshold of PET. DC conductivity measurements (1998)

A possible way for the detection of electrical threshold in dielectric polymers is illustrated in this paper. On the basis of the consideration that the lowest threshold level for electrical aging is related to build up of steady space charge, high-field current measurements performed at different voltage and temperature values, seeking space charge limited current conditions, can provide estimations of electric field at threshold. This approach is applied to PET films under dc voltage. The values of electrical threshold thus obtained are compared with those derived from conventional accelerated life testing, showing that there is good correspondence of values at the lowest temperature of the test range, while deviation between estimates increases with temperature.
Antibacterial Spiropyrimidinetriones with N-Linked Azole Substituents on a Benzisoxazole Scaffold Targeting DNA Gyrase (2020)

Herein, we report spiropyrimidinetriones (SPTs) incorporating N-linked azole substituents on a benzisoxazole scaffold with improved Gram-positive antibacterial activity relative to previously described analogues. SPTs have an unusual spirocyclic architecture and represent a new antibacterial class of bacterial DNA gyrase and topoisomerase IV inhibitors. They are not cross-resistant to fluoroquinolones and other DNA gyrase/topoisomerase IV inhibitors used clinically. The activity of the SPTs was assessed for DNA gyrase inhibition, and the antibacterial activity across Gram-positive and Gram-negative pathogens with N-linked 1,2,4-triazoles substituted on the 5-position provides the most worthwhile profile. Directed nucleophilic and electrophilic chemistry was developed to vary this 5-position with carbon, nitrogen, or oxygen substituents and explore structure-activity relationships including those around a target binding model. Compounds with favorable pharmacokinetic parameters were identified, and two compounds demonstrated cidality in a mouse model of <i>Staphylococcus aureus</i> infection.
High‐resolution Fourier‐encoded sub‐millisecond echo time musculoskeletal imaging at 3 Tesla and 7 Tesla (2012)

After optimization, Fourier-encoded spoiled gradient echo provides a highly robust and flexible imaging technique for high-resolution positive contrast imaging of fibrous tissue that can readily be used in the clinical routine.
Random-Walk Drift-Diffusion Charge-Collection Model For Reverse-Biased Junctions Embedded in Circuits (2014)

A new computational model for charge transport based on parallelized random-walk drift-diffusion is proposed. This approach models the radiation-induced charge carriers as charge packets in a 3-D structure and the transport modeling are based on simple physical equations without any fitting parameter. This model has been dynamically coupled with a SPICE circuit simulator to take into account temporal variations of the electric fields in the charge collection process. Thus, the circuit electrical response modulates the charge collection efficiency. Three simulation cases have been explored and compared with TCAD simulations or radiation experiments in 65 nm technology to validate the accuracy of the proposed approach. These simulations demonstrate the capability of the proposed model to accurately estimate the soft error rate of complex structures, such as flip-flops over a large range of ionizing particle linear energy transfer. The proposed simulation methodology is also able to take into account charge-sharing phenomenon, and this point is highlighted by a specific investigation on the considered flip-flop.
Nickel and cyclopropane reactions and photochemistry using matrix-isolation Fourier-transform IR spectroscopy. Nickelacyclobutane synthesis and photofragmentation (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNickel and cyclopropane reactions and photochemistry using matrix-isolation Fourier-transform IR spectroscopy. Nickelacyclobutane synthesis and photofragmentationEllen S. Kline, Robert H. Hauge, Zakya H. Kafafi, and John L. MargraveCite this: Organometallics 1988, 7, 7, 1512–1516Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org/doi/10.1021/om00097a010https://doi.org/10.1021/om00097a010research-articleACS PublicationsRequest reuse permissionsArticle Views223Altmetric-Citations17LEARN 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 Get e-Alerts
Circuit-simulation model of gate-drain-capacitance changes in small-size MOSFETs due to high channel-field gradients (2003)

The field gradient along the MOSFET channel is included in the modeling of the gate-drain capacitance (C/sub gd/) by an induced capacitance approach. The new approach has been successfully implemented in surface-potential based model HiSIM (Hiroshima-university STARC IGFET Model) and is capable of reproducing measured effects, which are particularly significant for pocket-implant technology, accurately.
Studentská konference FTelč (2010)

Dne 29. dubna 2011 se v Univerzitnim centru v Telci uskutecnila FTelc – již pata studentska konference Katedry filosofie FF MU. Ackoliv byl tento rocnik poznamenan mensim zajmem ze strany studentů, je třeba poznamenat, že poměr ucastniků s přispěvkem a ucastniků bez přispěvků by letos rekordni — teměř jedna ku jedne. Ucastniky konference podpořili i clenove pedagogickeho sboru Katedry filosofie, jmenovitě profesoři Krob a Zouhar, docent Raclavský a doktoři Bělohrad, Macha a Picha. Konference zacala ve 14: 30, na programu bylo osm dvacetiminutových přispěvků, po každem z nich nasledovala kratka diskuze. Prvni přispěvek s nazvem Teorie vseho, filozofie a fyzika přednesla Bc. Jana Svobodova, ktera ukazala, proc tzv. teorie vseho přesahuje kompetence fyziky a kdy je třeba zapojit do procesu tvorby teorie i filosofii. Ve druhem přispěvku se Petr Kopacek věnoval problematice myslenkových experimentů. Ukazal možnou klasifikaci myslenkových experimentů a nasledně provedl srovnani myslenkových a realných experimentů. Třeti přispěvek věnoval Peter Hudecek korespondencni teorii pravdy. Pokusil se v něm prokazat, že korespondencni teorie pravdy je založena na předpokladu, který vede k poruseni Russellova principu bludneho kruhu. Lukas Likavcan navazal přispěvkem zabývajicim se Quinovým legendarnim textem Dvě dogmata empirismu , analyzoval Quinovu snahu o popřeni existence rozdilu mezi analytickými a syntetickými soudy. Svůj přispěvek autor uzavřel zjistěnim, že Quine sice nedokazal neexistenci distinkce mezi analytickým a syntetickým, ale svou praci ukazal potřebu tyto pojmy podrobně explikovat. Ceska psychologicka scena je v soucasne otřasana sporem mezi Zdeňkem Vybiralem a Ceskomoravskou psychologickou spolecnosti. Bc. Tomas Ondracek předložil ve svem přispěvku analýzu konkretnich argumentů obsažených v oficialni korespondenci mezi oběma znesvařenými stranami a nasledně poukazal na specifika a rizika odvolavani se na eticke kodexy při argumentaci. Mgr. Petra Nekovařova věnovala svůj referat tematu, ktere je casto diskutovane jak v odborných kruzich, tak i laickou veřejnosti — eutanazii. Autorka se pokusila předložit analýzu pojmu eutanazie a jeho možne klasifikace. Dale se zaobirala souvisejicimi pravnimi a socialnimi problemy. Na problematiku eutanazie navazal Bc. Ales Horak přispěvkem na nemeně kontroverzni tema. V přispěvku s nazvem Je sebevražda nemoralni? autor seznamil posluchace s koncepci osobni identity Dereka Parfita, pomoci niž se snažil dokazat, že odpověď na otazku nemoralnosti sebevraždy je kladna. Oficialni cast konference uzavřel svým přispěvkem Bc. Michal Stranský, který si ve svem referatu položil otazku, zda je možne považovat moderni cynismus za pokracovani tradice antickeho kynismu. Aby mohl autor kladně odpovědět na tuto otazku, nejdřive představil dva možne přistupy k chapani kynicke filosofie a nasledně seznamil posluchace s filosofii slavneho německeho myslitele Petera Sloterdijka. Po skonceni oficialni casti konference se jeji ucastnici přesunuli do nedalekeho hotelu Antoň, v jehož prostorech proběhla, již v odlehcenem duchu, kuloarni debata studentů s pedagogy. Iva Svacinova a Jan Stěpanek
Anterolateral mini-incision hip replacement surgery: a modified Watson-Jones approach. (2004)

Mini-incision total hip replacement seeks to eliminate some complications of traditional extensile exposure and also attempts to facilitate more rapid rehabilitation of patients after surgery. Different surgical approaches historically have been used to do hip replacement surgery. Anterior or anterolateral approaches have often been selected to decrease the risk of posterior dislocation. Traditional anterolateral approaches have divided the anterior portion of the gluteus medius and minimus and potentially jeopardized the superior gluteal nerve. These disadvantages have been associated with abductor weakness, prolonged limp and decreased patient satisfaction. To overcome these problems, a mini-incision approach was developed using the intermuscular plane between the gluteus medius and the tensor fascia lata. This intermuscular interval through a small incision provides good exposure for total hip replacement and preserves muscle integrity so that rehabilitation can be rapid and the posterior capsule remains intact so that posterior dislocation is less of an issue. The surgical technique for this new innovative approach is described in this article.