gebhart/patrepeval huggingface dataset:
An MRF-Based Approach to Generation of Super-Resolution Images from Blurred Observations. (2000)

Abstract. This paper presents a new technique for generating a high resolution image from a blurred image sequence; this is also referred to as super-resolution restoration of images. The image sequence consists of decimated, blurred and noisy versions of the high resolution image. The high resolution image is modeled as a Markov random field (MRF) and a maximum a posteriori (MAP) estimation technique is used for super-resolution restoration. Unlike other super-resolution imaging methods, the proposed technique does not require sub-pixel registration of given observations. A simple gradient descent method is used to optimize the functional. The discontinuities in the intensity process can be preserved by introducing suitable line processes. Superiority of this technique to standard methods of image expansion like pixel replication and spline interpolation is illustrated.
Self–Assembled Peptide Nanostructures for Biomedical Applications: Advantages and Challenges (2011)

Over the last 20 years, self-assembled nanostructures based on peptides have been investigated and presented as biomaterials with an impressive potential to be used in different bionanotechnological applications such as sensors, drug delivery systems, bioelectronics, tissue reparation, among others. Several advantages (mild synthesis conditions, relatively simple functionalization, low-cost and fast synthesis) confirm the promise of these biological nanostructures as excellent candidates for such uses. Through self-assembly, peptides can give rise to a range of well-defined nanostructures such as nanotubes, nanofibers, nanoparticles, nanotapes, gels and nanorods. However, there are several challenges that have yet to be extensively approached and solved. Issues like controlling the size during synthesis, the stability in liquid environments and manipulation have to be confronted when trying to integrate these nanostructures in the development of sensing devices or drug-delivery systems. The fact that these issues present difficulties is reflected in the low number of devices or systems using this material in real applications. The present chapter discusses these challenges and presents possible solutions. A review of the state-of-the-art work concerning the use of peptide self-assembled structures in biomedical applications is given. Additionally, our findings regarding the on-chip synthesis of peptide self-assembled nanotubes and nanoparticles, their controlled manipulation, as well as electrical and structural characterizations are introduced. Our latest results showing the interaction of peptide self-assembled structures with cells for the development of a combined sensing/cell culture platform and the use of these material in clean-room processes together with the stability of the biological structures in liquid are also presented.
Nomad Biometric Authentication: Towards Mobile and Ubiquitous Person Identification (2010)

Our work and living environments are increasingly populated by devices which integrate computational ability and intelligence. The Nomad Biometric Authentication (NOBA) project focuses on the development and implementation of biometric technologies for strong authentication to enable provision of nomadic computing users with services and document dematerialization in secure information and communication systems. NOBA adopted visual capture of biometric information, aiming to achieve, as much as possible, data acquisition which is unobtrusive and transparent to the user. Therefore, the modalities chosen are iris analysis (in low resolution, as it is either based on mobile device capture, or capture at a distance), analysis of face and its characteristic parts, and analysis of gait. Thus, the objective of the NOBA project is to demonstrate the feasibility of a nomad strong authentication service on a distributed environment of ubiquitous and mobile devices, based on acquiring and merging biometric data.
One-step phenol production from a water–toluene mixture using radio frequency in-liquid plasma (2017)

The objectives of this research were to understand the process of converting toluene into phenol&#13;\nin a one-step process directly from a water–toluene mixture using the plasma in-liquid method.&#13;\nExperiments were conducted using 27.12 MHz radio frequency (RF) in-liquid plasma to&#13;\ndecompose a solution of 30% toluene. Based on the experimental results as evaluated using gas&#13;\nchromatography–mass spectrometry (GC–MS), along with additional analysis by the Gaussian&#13;\ncalculation, density functional theory (DFT) hybrid exchange–correlational functional (B3LYP)&#13;\nand 6-311G basis, the phenol generated from toluene was quantified including any by-products.&#13;\n&#13;\nIn the experiment, it was found that OH radicals from water molecules produced using RF in-&#13;\nliquid plasma play a significant role in the chemical reaction with toluene. The experimental&#13;\n&#13;\nresults suggest that phenol can be directly produced from a water–toluene mixture. The&#13;\nmaximum phenol yields were 0.0013% and 0.0038% for irradiation times of 30 s and 60 s,&#13;\nrespectively, at 120 W.
www.radiology-trainer.com – eine Internetbasierte Fallsammlung mit einer neuen Traningsfunktion (2009)

Es gibt inzwischen eine Reihe von Internetbasierten Fallsammlungen. Ein großer Vorteil ist die Möglichkeit der interaktiven Nutzung und die jederzeitige weltweite Verfügbarkeit. Bei der hier von uns präsentierten neuen Seite werden dem Nutzer unter seinem persönlichen log-in Fälle aus dem klinischen Alltag vorwiegend aus dem Klinium-Bremen-Mitte und dem MR-Zentrum Bremen in zufälliger Reihenfolge mit kurzen klinischen Angaben und einigen Bildern präsentiert. Nach Bearbeitung eines Falles kann der Nutzer entscheiden, ob den Fall noch einmal präsentiert bekommen will oder nicht. Auf diese Weise können leichte „Standardfälle“ schnell durchgearbeitet werden, schwierige Fälle werden dagegen so oft präsentiert, bis sie zuverlässig wieder erkannt werden. Dieses Trainingskonzept bewirkt, dass auch seltene Krankheitsbilder ausreichend oft gesehen werden, um in der täglichen Praxis wieder erkannt zu werden. Die Programmierung der Datenbank erfolgte durch fsl-Freie-Software-Lösungen Oldenburg unter Nutzung von open-source-software.
Secretion of I131 into milk by lactating rat mammary glands (1960)

The amount of I 131 secreted in 8 hours into milk of lactating rats was determined on the 14th day of lactation using a technique which effected almost complete removal of milk from all 12 mammary glands. The mammary glands and kidneys each trapped 35–40% of the injected I 131 dose when the isotope was injected after the mammary glands of the rats had been emptied of milk. The amounts of I 131 eliminated via milk and urine were not affected by the dietary level of iodide. Milk from these animals contained twice as much as I 131 and four to five times more per gram of milk as milk from glands which were partially full at the time of I 131 administration. A significant reduction in thyroidal I 131 uptake accompanied the increased loss of I 131 via the milk from the previously empty mammary glands. These data indicate that lactating rat mammary glands are powerful iodide traps which, in cooperation with the kidneys, reduce the amount of iodide available for thyroxine synthesis.
Migration Properties Distinguish Tumor Cells of Classical Hodgkin Lymphoma from Anaplastic Large Cell Lymphoma Cells (2019)

Anaplastic large cell lymphoma (ALCL) and classical Hodgkin lymphoma (cHL) are lymphomas that contain CD30-expressing tumor cells and have numerous pathological similarities. Whereas ALCL is usually diagnosed at an advanced stage, cHL more frequently presents with localized disease. The aim of the present study was to elucidate the mechanisms underlying the different clinical presentation of ALCL and cHL. Chemokine and chemokine receptor expression were similar in primary ALCL and cHL cases apart from the known overexpression of the chemokines CCL17 and CCL22 in the Hodgkin and Reed-Sternberg (HRS) cells of cHL. Consistent with the overexpression of these chemokines, primary cHL cases encountered a significantly denser T cell microenvironment than ALCL. Additionally to differences in the interaction with their microenvironment, cHL cell lines presented a lower and less efficient intrinsic cell motility than ALCL cell lines, as assessed by time-lapse microscopy in a collagen gel and transwell migration assays. We thus propose that the combination of impaired basal cell motility and differences in the interaction with the microenvironment hamper the dissemination of HRS cells in cHL when compared with the tumor cells of ALCL.
Nitrogen‐doped carbons derived from poly(ionic liquid)s with various backbones and cations (2019)

Abstract In this study, poly(ionic liquid)s (PILs) with various backbone/cation pairings (backbones – ethyl methacrylate, styrene; covalently attached cations – butylimidazolium, trimethylammonium, butylpyrrolidinium) were successfully synthesized as carbon precursors. Pyrolysis of PILs produced carbons with sheet‐like structures with a metallic luster in contrast to the powder form of carbons produced from polyacrylonitrile. The results also show that cation type has a significant impact on surface area, graphitic content, graphitic nitrogen content, nitrogen retention, carbon yield and surface chemistry of the PIL‐derived carbons. The design of nitrogen‐doped carbons based on a diverse set of PILs with various cation and polymer backbone chemistries may be an effective strategy to optimize carbon properties for subsequent application in energy storage devices. © 2019 Society of Chemical Industry
ECG recording and signal processing (1993)

Prikazane su osnove konstrukcije uređaja za bilježenje elektrkardiograma. Također su prikazane moguce racunalne analize signala elektrokardiograma.
Triphasic Pulses Reduce Facial Nerve Stimulation in CI Users: Intra- and Postoperative Electromyographic Data (2018)

Facial nerve stimulation (FNS) can be observed in cochlear implant (CI) users as an undesirable side effect. Triphasic pulses were shown to reduce FNS, but no objective measure quantified their clinical benefit. This study presents electromyographic (EMG) data collected intra- and postoperatively in CI users.
Drug-coated Balloons in the Femoropopliteal Region: Dream or Reality? (2018)

Peripheral arterial disease is a severe pathology. Several methods have been tested in order to increase the patency rate and the quality of life. The superficial femoral artery is considered a very difficult region due to the continuous movement of the leg that modify the length and the morphology of this vessel. Since their introduction, drug-coated balloons have been correlated with an increased patency rate. Several studies have been performed and nowadays a level 1 evidence is available. Not all the lesions can be treated successfuly with drug-coated balloons. For example in case of heavely calcified lesions vessel preparation is required. This can be performed with atherectomy, scorig balloon, lithoplasty in order to debulk the lesion and increase the drug uptake.
Transient electric phenomena observed during fluid circulation in unsaturated porous media (2002)

We conducted a series of electrokinetic measurements on partially saturated sandstone samples. Both steady and transient electric signals were observed. We recorded transient electric signals with frequencies of 0.5–2Hz and amplitudes 10–100 times smaller than the quasi‐DC streaming potential, which we associate with fluid flow instabilities in the unsaturated porous rocks samples. Some of these electric signals were correlated with fluid pressure variations, delayed by one to a few seconds.
Supplementary Data from Mitotic Deregulation by Survivin in ErbB2-Overexpressing Breast Cancer Cells Contributes to Taxol Resistance (2023)

Supplementary Data from Mitotic Deregulation by Survivin in ErbB2-Overexpressing Breast Cancer Cells Contributes to Taxol Resistance
Characterization of bulk and surface currents in strain-balanced InGaAs quantum-well mesa diodes (2004)

We compare the electrical and optical characteristics of mesa diodes based on In0.62Ga0.38As∕In0.45Ga0.55As strain-balanced multiple-quantum wells (SB-MQW) with lattice-matched (LM) In0.53Ga0.47As diodes. The dark current density of the SB-MQW devices is at least an order of magnitude lower than the LM devices for voltages &amp;gt;0.4V. Sidewall recombination current is only measured on SB-MQW diodes when exposed to a damaging plasma. While radiative recombination current dominates in the SB-MQW diodes, it is less than the diffusive current in the LM diodes for the same applied voltage.
On the Complexity of Timetable and Multicommodity Flow Problems (1976)

A very primitive version of Gotlieb’s timetable problem is shown to be NP-complete, and therefore all the common timetable problems are NP-complete. A polynomial time algorithm, in case all teachers are binary, is shown. The theorem that a meeting function always exists if all teachers and classes have no time constraints is proved. The multicommodity integral flow problem is shown to be NP-complete even if the number of commodities is two. This is true both in the directed and undirected cases.
Human Nonvisual Responses to Simultaneous Presentation of Blue and Red Monochromatic Light (2012)

Blue light sensitivity of melatonin suppression and subjective mood and alertness responses in humans is recognized as being melanopsin based. Observations that long-wavelength (red) light can potentiate responses to subsequent short-wavelength (blue) light have been attributed to the bistable nature of melanopsin whereby it forms stable associations with both 11-cis and all-trans isoforms of retinaldehyde and uses light to transition between these states. The current study examined the effect of concurrent administration of blue and red monochromatic light, as would occur in real-world white light, on acute melatonin suppression and subjective mood and alertness responses in humans. Young healthy men (18-35 years; n = 21) were studied in highly controlled laboratory sessions that included an individually timed 30-min light stimulus of blue (λ(max) 479 nm) or red (λ(max) 627 nm) monochromatic light at varying intensities (10(13)-10(14) photons/cm(2)/sec) presented, either alone or in combination, in a within-subject randomized design. Plasma melatonin levels and subjective mood and alertness were assessed at regular intervals relative to the light stimulus. Subjective alertness levels were elevated after light onset irrespective of light wavelength or irradiance. For melatonin suppression, a significant irradiance response was observed with blue light. Co-administration of red light, at any of the irradiances tested, did not significantly alter the response to blue light alone. Under the current experimental conditions, the primary determinant of the melatonin suppression response was the irradiance of blue 479 nm light, and this was unaffected by simultaneous red light administration.
An analysis of the relationship between induction motor current and shaft speed fluctuations (1992)

For induction motors, motor shaft speed variations accompany motor load torque variations and motor torque variations. Hence, shaft speed fluctuation detection can serve as a warning of undesirable motor load conditions. This paper presents a theoretical foundation for the relationship between motor shaft speed fluctuations and stator current fluctuations when the shaft speed is perturbed by any cause. In addition, it shows that amplitude and frequency demodulation of motor current enhance the observed current fluctuations. The equations presented herein are derived in an as-yet unpublished work. Differential equations and basic electromagnetic equations, rather than phasors, are emphasized in their derivation. Fourier spectra of motor current, amplitude-demodulated motor current, and frequency-demodulated motor current are given for motor shaft speed modulated simultaneously with 13- and 17-Hz perturbations. We conclude that frequency demodulation is potentially a much better method to detect shaft speed fluctuations than is amplitude demodulation but that better methods of frequency demodulation are needed. The best presently available methods of frequency demodulation alias interference lines down into the spectra of interest below 60 Hz. There, they mask the valid spectral lines.
Miniaturization of a Monopolar Wire-Plate Antenna Using Magneto-Dielectric Material (2019)

This article details a miniaturization strategy for an electrically small Monopolar Wire-Plate Antenna (MWPA) loaded by Magneto-Dielectric Material (MDM). This approach consists in multiplying the number of antenna's short-circuit wires in order to magnify the interaction with the material. A model showing the equivalence between a single-shorted MWPA and n-shorted wires is proposed to serve this strategy of miniaturization.
FFS‐mode OS‐LCD for reducing eye strain (2013)

Abstract In order to reduce eye strain, a driving method for reducing flickers of liquid crystal display (LCD) is devised. For this driving, an oxide semiconductor (OS) is used in a backplane, liquid crystal and alignment layer materials are optimized, and a fringe field switching (FFS) mode with a structurally formed storage capacitor is used. This work reveals that suitable usages of positive and negative liquid crystals differ from each other according to their characteristics. This work also describes an OS‐LCD with a touch sensor we fabricated for mobile devices, which proves the possibility of reducing‐eye‐strain technology (REST) with reduced flickers.
Pancreatic cancer cells surviving gemcitabine treatment express markers of stem cell differentiation and epithelial-mesenchymal transition (2012)

Objective response rates to standard chemotherapeutic regimens remain low in pancreatic cancer. Subpopulations of cells have been identified in various solid tumors which express stem cell-associated markers and are associated with increased resistance against radiochemotherapy. We investigated the expression of stem cell genes and markers of epithelial-mesenchymal transition in pancreatic cancer cells that survived high concentrations of gemcitabine treatment. Capan-1 and Panc-1 cells were continuously incubated with 1 and 10 µM gemcitabine. Surviving cells were collected after 1, 3 and 6 days. Expression of PDX-1, SHH, CD24, CD44, CD133, EpCAM, CBX7, OCT4, SNAIL, SLUG, TWIST, Ki-67, E-cadherin, β-catenin and vimentin were quantified by qPCR or immunocytochemistry. Migration was assessed by wound‑healing assay. SHH was knocked down using RNA interference. Five primary pancreatic cancer cell lines were used to validate the qPCR results. All investigated genes were upregulated after 6 days of gemcitabine incubation. Highest relative expression levels were observed for OCT4 (13.4-fold), CD24 (47.3-fold) and EpCAM (15.9-fold) in Capan-1 and PDX-1 (13.3‑fold), SHH (24.1-fold), CD44 (17.4-fold), CD133 (20.2-fold) and SLUG (15.2-fold) in Panc-1 cells. Distinct upregulation patterns were observed in the primary cells. Migration was increased in Panc-1 cells and changes in the expression of E-cadherin and β-catenin were typical of epithelial-mesenchymal transition in both cell lines. SHH knockdown reduced IC(50) from 30.1 to 27.6 nM in Capan-1 while it strongly inhibited proli-feration in Panc-1 cells. Cells surviving high-dose gemcitabine treatment express increased levels of stem cell genes, show characteristics associated with epithelial-mesenchymal transition and retain their proliferative capacity.
Characteristics of Beta Waveform Shape in Parkinson’s Disease Detected with Scalp Electroencephalography (2019)

Abstract Neural activity in the beta frequency range (13-30 Hz) is excessively synchronized in Parkinson’s Disease (PD). Previous work using invasive intracranial recordings and non-invasive scalp electroencephalography (EEG) has shown that correlations between beta phase and broadband gamma amplitude (i.e., phase-amplitude coupling) are elevated in PD, perhaps a reflection of this synchrony. Recently, it has also been shown, in invasive human recordings, that nonsinusoidal features of beta oscillation shape also characterize PD. Here we show that these features of beta waveform shape also distinguish PD patients on and off medication using non-invasive recordings in a dataset of 15 PD patients with resting scalp EEG. Specifically, beta oscillations over sensorimotor electrodes in PD patients off medication had greater sharpness asymmetry and steepness asymmetry than on medication (sign rank, p=0.006, p=0.003 respectively). We also showed that beta oscillations over sensorimotor cortex most often had a canonical shape and that using this prototypical shape as an inclusion criterion increased the effect size of our findings. Together our findings suggest that novel ways of measuring beta synchrony that incorporate waveform shape could improve detection of PD pathophysiology in non-invasive recordings.
Enteric methane emissions in response to ruminal inoculation of Propionibacterium strains in beef cattle fed a mixed diet (2015)

The objective of this study was to test the efficacy of Propionibacterium strains to mitigate enteric methane (CH4) emissions in beef heifers fed a mixed diet. An experiment was conducted with 16 ruminally cannulated beef heifers fed a basal diet consisting of 60 : 40 barley silage : barley grain (DM basis). Treatments included: (1) Control, (2) Propionibacterium freudenreichii T114, (3) P. thoenii T159, and (4) P. freudenreichii T54. Strains (1 × 1011 colony forming units) were administered daily directly into the rumen before feeding. No treatment effects were observed for DM intake (P = 0.90), mean ruminal pH (P = 0.50) and total volatile fatty acids (P = 0.44). However, compared with the Control, proportions of individual volatile fatty acids changed with acetate being less with Propionibacterium T159 (P = 0.02), whereas ruminal isobutyrate (P &amp;lt; 0.01) and acetate : propionate ratio (P = 0.04) were greater with Propionibacterium T114. Total daily enteric CH4 production averaged 188 g/day and was not affected by Propionbacterium strains (P = 0.51). Methane yield averaged 22 g/kg of DMI intake and tended to be greater with Propionibacterium strains (P = 0.08). The relative abundance of total Propionibacteria was greater with the inoculation of Propionibacterium T159 relative to the Control heifers (P = 0.04). In conclusion, inoculation of Propionibacterium T159 decreased ruminal acetate proportion and Propionibacterium T114 increased acetate : propionate ratio. However, inoculated strains failed to lower total CH4 emissions possibly due to the inability of Propionibacterium strains to elevate ruminal propionate concentrations.