gebhart/patrepeval huggingface dataset:
Cell gap margin enlargement of in-plane switching mode liquid crystal displays using weak-anchoring effects (1999)

A method to enlarge the allowable range of marginal variation of the cell gap to ensure uniform brightness of in-plane switching mode liquid crystal displays is proposed. The proposed method is based on enlargement of the effective cell gap using the extrapolation length that is generated with weak-anchoring effects at liquid crystal/alignment layer interfaces. The method is evaluated with simulations and experiments. The results support the effectiveness of the method.
Control flow optimization for fast system simulation and storage minimization (1994)

This paper addresses the important problem of efficient system-level evaluation for real-time multidimensional signal processing systems, as occurring in image, speech and video processing. We solve both the difficult task of finding a correct procedural ordering for the evaluation (without expanding the code to scalars) and the optimisation of the loop organisation, leading to an acceptable amount of memory within the system-level evaluation and/or software/hardware synthesis environment. The effectiveness of our solution is substantiated with several realistic test cases. 1 Introduction Application studies in the areas of speech, image and video processing, front-end telecom and numerical computing systems indicate that many algorithms exhibit a large amount of control flow, including many loops, and multi-dimensional signals [3]. This is especially so if the applications are described in an applicative way using languages like SILAGE [7]. It leads to a severe memory bottleneck whe...
Sensitivity analysis of cardiovascular models for minimally invasive estimation of systemic vascular parameters (1999)

A sensitivity analysis technique was used to evaluate two simple cardiovascular models for model parameter estimation using minimal measurable signals. The purpose of this study is to determine a simple model, which can used with a left ventricular device (LVAD) model to identify the model parameters using signals from the LVAD, to characterize the systemic load. The control of the LVAD can then be adjusted based on patient's demand, represented by the systemic load, with minimum invasive sensors. The results obtained from the nominal parameter values of normal patients suggested that a model with a constant capacitance for the left atrium is suitable for parameter estimation if aortic pressure, aortic flow, and left atrial pressure are measurable. If only aortic pressure and flow are available, a simplified model, excluding the left atrium from the original model, provides more accurate estimates. An extended Kalman filter was used with computer simulation data to identify parameters of the models for verifying the results from the sensitivity analysis.
Electrochemical Reduction of Nitrates on CoO Nanoclusters‐Functionalized Graphene with Highest Mass Activity and Nearly 100% Selectivity to Ammonia (Adv. Energy Mater. 17/2023) (2023)

Electrochemical Ammonia Synthesis The electrochemical reduction of nitrate to ammonia represents a promising pathway towards wastewater remediation, energy storage, and fertilizer production. Shown in the image representing article number 2204236 by Vikas Berry, Joseph A. Gauthier, Meenesh R. Singh, and co-workers, is an illustration of a cobalt nanoparticle (light blue spheres) supported on graphene (gray spheres), which are found to catalyze the electrochemical conversion of nitrate to ammonia with high activity and nearly perfect selectivity.
Internalization and nuclear localization of interleukin 1 are not sufficient for function. (1991)

The human fibroblast interleukin 1 (IL-1) receptor is a glycosylated transmembrane protein with a cytoplasmic domain of 213 amino acids. We have constructed a series of deletion mutants of the cytoplasmic region of the IL 1 receptor and have used these mutants to examine its role in ligand binding, internalization, signal transduction, and nuclear localization of IL-1. Mutant receptors lacking most of the cytoplasmic domain are expressed at the cell surface and can bind, internalize, and localize IL-1 at the nucleus, but they do not allow IL-1-mediated induction of interleukin 2 and SV40 promoters. We have localized a critical region for signal transduction to a 50-amino acid segment of the cytoplasmic domain of the receptor. These studies demonstrate that IL-1 internalization and nuclear localization are not sufficient to trigger IL-1 activation of gene expression in T-cells.
Second class currents, axial mass, and nuclear effects in hyperon production (2021)

We study the properties of the Cabibbo suppressed quasielastic production of $\mathrm{\ensuremath{\Lambda}}$ and $\mathrm{\ensuremath{\Sigma}}$ hyperons in antineutrino interactions with nuclei, including the effects of modified form factor axial mass, the second class current, and SU(3) flavor violations. The hyperon and nucleon are subjected to the nuclear potential and the outgoing hyperon can undergo final state interactions. The hyperon potential has a significant effect on their production through absorption. We predict a significant enhancement of $\mathrm{\ensuremath{\Lambda}}$ production compared with other hyperon production channels through $\mathrm{\ensuremath{\Sigma}}\ensuremath{\rightarrow}\mathrm{\ensuremath{\Lambda}}$ conversions. We produce predictions for several experiments by combining realistic neutrino energy distributions with suitable nuclear targets.
Chiral Amplification in the Transcription of Supramolecular Helicity into a Polymer Backbone (2005)

A chiral supramolecular “sergeant” as the structure-directing agent affects the backbone stereochemistry during polymerization of the achiral “soldier” monomers. The polymer obtained shows preferred helical folding despite its mixed microstructure. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z462347_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Rigid Formations with Leader-Follower Architecture (2005)

This paper is concerned with information structures used in rigid formations of autonomous agents that have leader-follower architecture. The focus of this paper is on sensor/network topologies to secure control of rigidity. We extend our previous approach for formations with symmetric neighbor relations to include formations with leader-follower architecture. Necessary and sufficient conditions for stably rigid directed formations are given including both cyclic and acyclic directed formations. Some useful steps for creating topologies of directed rigid formations are developed. An algorithm to determine the directions of links to create stably rigid directed formations from rigid undirected formations is presented. It is shown that k-cycles (k &gt; 2) do not cause inconsistencies when measurements are noisy, while 2-cycles do. Simulation results are presented for (i) a rigid acyclic formation, (i) a flexible formation, and (iii) a rigid formation with cycles.
Conjugated polymer nanoparticles (2010)

Conjugated polymer nanoparticles are highly versatile nano-structured materials that can potentially find applications in various areas such as optoelectronics, photonics, bio-imaging, bio-sensing and nanomedicine. Their straightforward synthesis in desired sizes and properties, biocompatibility and non-toxicity make these materials highly attractive for the aforementioned applications. This feature article reviews the recent developments in the synthesis, characterization, properties and application of these exciting nanostructured materials.
Supplementary Data from CIP2A Interacts with TopBP1 and Drives Basal-Like Breast Cancer Tumorigenesis (2023)

Supplementary Data from CIP2A Interacts with TopBP1 and Drives Basal-Like Breast Cancer Tumorigenesis
Birch pollen profilin: structural organization and interaction with poly‐(l‐proline) peptides as revealed by NMR (1997)

The secondary structure of birch pollen profilin, a potent human allergen, was elucidated by multidimensional nuclear magnetic resonance (NMR), as a prerequisite to study the interaction of this profilin with ligands for its poly-(L-proline) (PLP)-binding site. The chemical shifts of the 15N-labeled backbone amide groups were used to monitor complex formation with various PLP peptides. Titration with deca-L-proline (P10) yielded a KD of 0.2 mM. P8 was the shortest PLP to provoke a significant reaction. (GP5)3G bound significantly, confirming the interaction between profilins and the protein VASP containing this motif. Birch profilin interacted also with GP6GP5, found in the cyclase-associated protein (CAP), a suspected profilin ligand.
4,4′-Bipyridine 1,2-diiodo-3,4,5,6-tetrafluorobenzene (2002)

T = 290 K Mean '(CC) = 0.007 A R factor = 0.038 wR factor = 0.
Relative gain array estimation based on non-parametric frequency domain system identification (2014)

Since the introduction of the Relative Gain Array (RGA) by Bristol in 1966, it has received a high level of attention as a practical tool for solving the input-output pairing problem in decentralized control. Moreover, many extensions have been proposed like e.g. for the dynamic case and non-square system matrices. Recently, extensions that provide tools for uncertain parametric process models were suggested. In order to remove the dependency of these tools on a parametric description and accurate knowledge of a nominal model this paper proposes a method to calculate the RGA directly from a non-parametric frequency response matrix (FRM), derived from frequency domain system identification approach. The proposed method reduces the influence of model uncertainties on the calculation of the RGA and derives the RGA at frequencies of interest. Using Monte-Carlo principles, the variance of the estimated RGA is derived and compared with recently proposed methods. The results are exemplified on 2×2, 2×3 and 3×3 systems. It concluded that the proposed methods performs well and robust, while simplifying the estimation of the RGA.
Wearable health devices and personal area networks: can they improve outcomes in haemodialysis patients? (2020)

Digitization of healthcare will be a major innovation driver in the coming decade. Also, enabled by technological advancements and electronics miniaturization, wearable health device (WHD) applications are expected to grow exponentially. This, in turn, may make 4P medicine (predictive, precise, preventive and personalized) a more attainable goal within dialysis patient care. This article discusses different use cases where WHD could be of relevance for dialysis patient care, i.e. measurement of heart rate, arrhythmia detection, blood pressure, hyperkalaemia, fluid overload and physical activity. After adequate validation of the different WHD in this specific population, data obtained from WHD could form part of a body area network (BAN), which could serve different purposes such as feedback on actionable parameters like physical inactivity, fluid overload, danger signalling or event prediction. For a BAN to become clinical reality, not only must technical issues, cybersecurity and data privacy be addressed, but also adequate models based on artificial intelligence and mathematical analysis need to be developed for signal optimization, data representation, data reliability labelling and interpretation. Moreover, the potential of WHD and BAN can only be fulfilled if they are part of a transformative healthcare system with a shared responsibility between patients, healthcare providers and the payors, using a step-up approach that may include digital assistants and dedicated 'digital clinics'. The coming decade will be critical in observing how these developments will impact and transform dialysis patient care and will undoubtedly ask for an increased 'digital literacy' for all those implicated in their care.
Synthesis of Vinyl-Substituted β-Diketones for Polymerizable Metal Complexes (2005)

[reaction: see text] Polymerizable beta-diketones for application to metal ion coordination have been prepared and characterized. Bromine-substituted beta-diketones were synthesized under Claisen-Schmidt-type condensation conditions. Vinyl groups were substituted for the halide by one of two types of Heck coupling with high-pressure ethylene. The type of Heck coupling employed was dictated by the thermal sensitivity of the substrate. Seven vinyl-substituted beta-diketones were synthesized, including several new ones, by this method. The beta-diketones were characterized by GC-MS, FT-NMR, FT-IR, and microanalysis.
A biodegradable composite scaffold for cell transplantation (2002)

Cell transplantation is rapidly becoming a therapeutic option to treat disease and injury. However, standard techniques for cell seeding on non-woven polymer meshes or within gels may not be suitable for immediate implantation or surgical manipulations of freshly isolated cells. Therefore, a biodegradable composite system was developed as a way to rapidly entrap cells within a support of predefined shape to potentially facilitate cell delivery into a target site (e.g. meniscal tears in the avascular zone). The composite construct consisted of freshly isolated cells, in this case pig chondrocytes, entrapped in a fibrin gel phase and dispersed throughout the void volume of a polyglycolic acid (PGA) non-woven mesh. Composites were cultured for up to 4 weeks. In vitro degradation of fibrin gel was evaluated via gel-entrapped urokinase. At 28 days in culture, glycosaminoglycan (GAG) content per cell in the composite scaffolds was 2.6 times that of the PGA-only cell construct group and 88% that of native pig cartilage. Total collagen content per cell in the composite scaffolds was not significantly different from the PGA-only cell construct group (P > 0.02) and represented 40% of the value determined for native cartilage. Varying the concentration of entrapped urokinase could effect controlled degradation of fibrin gel.
Investigation of triplet harvesting and outcoupling efficiency in highly efficient two-color hybrid white organic light-emitting diodes (2013)

We investigate singlet and triplet transfer processes in white triplet harvesting (TH) organic light-emitting diodes (OLEDs), comprising fluorescent and phosphorescent emitter molecules. By analyzing electroluminescence spectra and performing time-resolved measurements, we prove direct TH from the blue fluorescent emitter N,N′-di-1-naphthalenyl-N,N′-diphenyl-[1,1′:4′,1″:4″,1′′′-quaterphenyl]-4,4′′′-diamine (4P-NPD) to the yellow phosphorescent emitter bis(2-(9,9-dihexyluorenyl)-1-pyridine)(acetylacetonate)iridium(III) (Ir(dhfpy)2(acac)). Singlet transfer is identified as a second exciton transfer mechanism in the TH OLEDs under investigation. The CIE coordinates of these devices can be adjusted over a wide range by varying the distance between exciton generation and TH zone. For an OLED with CIE color coordinates of (0.42/0.40), close to the warm white color point A, we obtain nearly perfect Lambertian emission characteristics. This device achieves an external quantum efficiency (EQE) of 9.4% and a luminous efficacy (LE) of 27.1 lm W−1 (at 1000 cd m−2) which can be further increased to 46 lm W−1 using outcoupling enhancement techniques. Optical modeling of the electromagnetic field inside the TH OLED and a comparison to the position of the emitters within the device confirms that the devices operate close to the optical optimum and yields an estimated internal quantum efficiency (IQE) of 48.7% and a singlet/(harvested) triplet ratio of 0.28/0.72 = 0.39.
Protein expression of MMP2, TIMP2 in hepatocellular carcinoma: relationships with tumor grade, clinicopathologic parameters, and patient survival. (2006)

5009 Background/Aims: Matrix metalloproteinase-2 (MMP-2) is involved in the processes of tumor invasion and metastasis. However, studies on MMP-2 and tissue inhibitor of MMP-2 (TIMP-2) in hepatocellular carcinoma (HCC) are rare, and there are no studies on the correlations with these expressions and HCC patient’s suvival. Methods : We immunohistochemically examined the expression of these proteins and the relationships between these expressions and histological grade, clinicopathological parameters and patient’s survival in 106 patients with HCC. We also examined gelatin zymography and western blotting, using 12 fresh samples of HCC. Results : MMP-2 and TIMP-2 immunoreactivities were presented in HCC cells as well as in non-HCC cells. MMP-2 expression significantly correlated with TIMP-2 expression, and these expressions were stronger in non-tumorous lesions than in tumor lesions. These immunohistochemical results were nearly consistent with the results of western blotting. MMP-2 expression significantly correlated with HCC grade. Though there were no relations between the MMP-2 or TIMP-2 expression and several clinicopathological parameters, overexpressions of MMP-2 and TIMP-2 were associated with poor prognosis of HCC’s patients. Moreovre, TIMP-2 expression was identified as the best predictive factor for determining the prognosis in patients with HCC. Conclusion : MMP-2 and TIMP-2 are involved in HCC progression, and their overexpression is associated with poor prognosis.
Linear Codes (2006)

In this chapter, we consider block codes with a certain structure, which are defined over alphabets that are fields. Specifically, these codes, which we call linear codes, form linear spaces over their alphabets. We associate two objects with these codes: a generator matrix and a parity-check matrix. The first matrix is used as a compact representation of the code and also as a means for efficient encoding. The parity-check matrix will be used as a tool for analyzing the code (e.g., for computing its minimum distance) and will also be part of the general framework that we develop for the decoding of linear codes.
<title>Sensor fusion for the detection of land mines</title> (1999)

The detection of buried anti-personnel mines (APMs) is widely considered as a problem which may only be solved with a combination of two or more complementary sensors. We present processing and fusion results obtained from a multisensor data set, acquired with a pulse induction metal detector (MD), a pulsed ultra wide band ground penetrating radar (GPR) and a 3 - 5 (mu) thermal IR camera. Metal detector and GPR sensors were mounted on a rig for optimum control. Various types of soils, clutter objects and burial conditions were recorded. Anti personnel mines included minimum metal mines as well as mines with a significant metal content. We use a special projection to map a 3D GPR data cube, with time or depth as vertical coordinate, into a horizontal plane view 2D image. Object contours are then derived, based on an edge extraction method, followed by an automatic detection of circular shapes with a Hough-transform. In the association step, the stand-off IR image, the metal detector and GPR images and related detections are mapped onto a common cartesian grid on the ground surface. Detection results are fused on a decision level, using a Bayesian approach. Our results indicate that the GPR performance approximately matches that of the metal detector. With both sensors all metallic mines and around 60% of the minimum metal mines were detected. In the case of two false alarms per square meter combined detection probability clearly exceeds single sensor performance and reaches around 80%. Our fusion demonstrator, which incorporates all elements of the processing chain, has been implemented on the basis of MATLAB<SUP>TM</SUP>.
Evolution of fecal microbiota transplantation in methodology and ethical issues (2019)

Fecal microbiota transplantation (FMT), the core therapy for remodeling the gut microbiota with a long medical history, has gained great attention worldwide in recent years. Increasing studies have explored its indications, methodology, efficacy, safety, and ethics. Purified forms of FMT, using an automated method for the purification of fecal microbiota from stool, has become a reality. Colonic transendoscopic enteral tubing makes frequent FMT delivery into the whole colon feasible. This review focuses on the recent progress in laboratory preparation, updated clinical strategies, novel delivery methods, and ethical issues surrounding FMT in clinical studies.
Noise figure of amplified dispersive Fourier transformation (2010)

Amplified dispersive Fourier transformation (ADFT) is a powerful tool for fast real-time spectroscopy as it overcomes the limitations of traditional optical spectrometers. ADFT maps the spectrum of an optical pulse into a temporal waveform using group-velocity dispersion and simultaneously amplifies it in the optical domain. It greatly simplifies spectroscopy by replacing the diffraction grating and detector array in the conventional spectrometer with a dispersive fiber and single-pixel photodetector, enabling ultrafast real-time spectroscopic measurements. Following our earlier work on the theory of ADFT, here we study the effect of noise on ADFT. We derive the noise figure of ADFT and discuss its dependence on various parameters.
Development of a pixel array detector for time resolved x-ray imaging (2000)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation G. Rossi, M. J. Renzi, E. F. Eikenberry, M. W. Tate, D. Bilderback, E. Fontes, R. Wixted, S. Barna, S. M. Gruner; Development of a pixel array detector for time resolved x-ray imaging. AIP Conf. Proc. 26 June 2000; 521 (1): 311–316. https://doi.org/10.1063/1.1291806 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
A brain tumor molecular imaging strategy using a new triple-modality MRI-photoacoustic-Raman nanoparticle (2013)

The difficulty in delineating brain tumor margins is a major obstacle in the path toward better outcomes for patients with brain tumors. Current imaging methods are often limited by inadequate sensitivity, specificity and spatial resolution. Here we show that a unique triplemodality magnetic resonance imaging - photoacoustic imaging - Raman imaging nanoparticle (termed here MPR nanoparticles), can accurately help delineate the margins of brain tumors in living mice both preoperatively and intraoperatively. The MPRs were detected by all three modalities with at least a picomolar sensitivity both in vitro and in living mice. Intravenous injection of MPRs into glioblastoma-bearing mice led to MPR accumulation and retention by the tumors, with no MPR accumulation in the surrounding healthy tissue, allowing for a noninvasive tumor delineation using all three modalities through the intact skull. Raman imaging allowed for guidance of intraoperative tumor resection, and a histological correlation validated that Raman imaging was accurately delineating the brain tumor margins. This new triple-modality– nanoparticle approach has promise for enabling more accurate brain tumor imaging and resection.