gebhart/patrepeval huggingface dataset:
Anodic Oxidation and Amperometric Sensing of Hydrazine at a Glassy Carbon Electrode Modified with Cobalt (II) Phthalocyanine–cobalt (II) Tetraphenylporphyrin (CoPc- (CoTPP)4) Supramolecular Complex (2006)

This paper describes the electrocatalytic behaviour of a glassy carbon electrode (GCE)modified with cobalt(II)phthalocyanine (CoPc) complex peripherally tetrasubstituted withcobalt(II)tetraphenylporphyrin (CoTPP) complexes via ether linkages (i.e., CoPc-(CoTPP)4). Thefeatures of the immobilised pentamer were interrogated with cyclic voltammetry andelectrochemical impedance spectroscopy (EIS) using [Fe(CN)6]3-/4- as redox probe revealedenhanced electron transfer properties with kapp ≈ 18 x 10-6 cms-1 compared to that of the bareGCE (4.7 x 10-6 cms-1). The viability of this supramolecular complex as a redox mediator for theanodic oxidation and sensitive amperometric determination of hydrazine in alkaline conditions isdescribed. The electrocatalytic oxidation of hydrazine by GCE-CoPc-(CoTPP)4 was characterisedwith satisfactory catalytic current response with low non-Faradaic current (ca. 30 times lowerthan the bare GCE) and at much lower oxidation potential (ca. 300 mV lower than the bareGCE). A mechanism for the studied electrocatalytic reaction was proposed based on thespectrophotometric evidence that revealed the major involvement of the Co(III)/Co(II) redox coupleof the central CoPc species rather than the CoTPP component of the pentamer. Rate constant forthe anodic oxidation of hydrazine was estimated from chronoamperometry as ~ 3x103 M-1s-1. Theproposed amperometric sensor displayed excellent charateristics towards the determination ofhydrazine in 0.2 M NaOH ; such as low overpotentials ( 100 mV vs Ag|AgCl), very fastamperometric response time (1 s), linear concentration range of up to 230 μM, with micromolardetection limit, high sensitivity and stability.
Annular Slot Antenna with 3-order radiation pattern diversity (2005)

This paper proposes a new triple Annular Slot Antenna (ASA) system with separate Transmit (Tx) and Receive (Rx) accesses allowing 3-order radiation pattern diversity. Such an antenna is designed for Wireless Local Area Network (WLAN) applications in the 5 GHz upper band. A prototype of the antenna system has been designed, realized and tested. Experimental results agree well with theoretical predictions.
The hanging cord with a real tip mass (2008)

Normal mode solutions for the perfectly flexible hanging cord problem have been known for over 200 years. More recently, theoretical results for a hanging cord with a point mass attached were presented. Here the theoretical results are tested experimentally using high-precision techniques which are accessible for use in an introductory laboratory. Also included is a generalization of the theory for the case where the rotational inertia of the tip mass is not negligible. An exact expression is obtained which can be solved for the normal mode frequencies. In all cases, the theoretical results are in good agreement with experimental results. Both the theory and experiment are at a level accessible to upper level undergraduate physics students. The problem serves as an example of other problems involving one-dimensional wave propagation with a spatially dependent wave speed resulting in non-harmonic normal mode frequencies. © 2008 IOP Publishing Ltd.
Mechanical and Dielectric Properties of Pure‐Silica‐Zeolite Low‐k Materials (2006)

k wie konkurrenzlos: Wegen ihrer kristallinen Struktur zeigten Zeolithe aus reinem Siliciumdioxid (pure silica zeolites, PSZs) in Experimenten bei jeder betrachteten Porosität oder Dielektrizitätskonstante (k) deutlich höhere Elastizitätsmoduln als amorphes Siliciumdioxid. Experimentelle und theoretische Ergebnisse deuten an, dass PSZs als nächste Generation von Low-k-Isolatoren infrage kommen. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2006/z602036_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.
Phasor fluorescence lifetime microscopy of NADH to analyze metabolic activity of adipocytes (Conference Presentation) (2018)

The evaluation of complex metabolic changes of individual live cells and heterogeneous cell cultures is not feasible using traditional methods due to their destructive behavior and lack of spatial information. Two-photon excited fluorescence of intrinsic fluorophores such as nicotinamide adenine dinucleotide (NADH) facilitate a label-free and non-destructive evaluation of metabolic activity. This study explores the phasor approach in combination with two-photon fluorescence lifetime imaging microscopy (FLIM) as a potential method to evaluate pharmacologically induced metabolic changes that occur during the browning of adipocytes. The possibility of browning of white adipose cells is a desirable prospect for the treatment of obesity and related disorders. Here, we compared the results obtained by Fourier-based phasor analysis with the traditional exponential FLIM analysis as well as results of an extracellular flux analyzer. The alteration of glycolytic function and oxidative phosphorylation after treatment with pharmacological reagents significantly shift the contribution of each of the fluorescence lifetime components to the total fluorescence intensity. Further, we showed that the ratios of the lifetime components obtained by the phasor approach reflect the shift in mitochondrial and cytosolic NADH concentration. The phasor analysis agrees with traditional assessments, such as the optical free-to-bound NADH ratio as well as the oxygen consumption rate and extracellular acidification rate as determined by the extracellular flux analyzer. Our results support the concept that non-invasive sensing of fat metabolism and browning of fat may be possible by analyzing the fluorescence lifetime of NADH using the phasor approach.
Host–guest complexes with tuneable solid state structures (2000)

Molecular clip receptors with long hydrocarbon tails self-assemble and form lamellar thin solid films, the architecture and properties of which can be fine-tuned by complexation of guest molecules
Experimental uncertainties in vacuum tests of PX-series AMTEC cells (1998)

Vacuum tests of the Pluto-Express (PX), multitubes, vapor anode AMTEC cells are being performed at the Air Force Research Laboratory (AFRL) in Albuquerque, NM. Uncertainties associated with the different measurements performed in these tests are calculated. The uncertainty was the larger of ±1% or ±1.7 K in temperature measurements; ±1.2% in the electric power output, ±0.7% in the heat input, and ±6.5% in heat rejection. Another uncertainty associated with the measurements of the BASE tube and evaporator temperatures was due to the placement of the thermocouples (TCs) in the respective cavities. In order to quantify this uncertainty, a heat transfer model was developed, which coupled heat conduction in the TC guide tube to forced convection, due to the flow of sodium vapor, and thermal radiation to the walls of the evaporator and the BASE tube cavities. The model predictions were in good agreement with the TC readings in PX-cells, which were about 15–18 K and 4–47 K, higher, respectively, than they should be for the BASE tube and evaporator, respectively.
Optical macromolecular indoaniline indicators for vinyl‐SiH curing of silicones for dental application (2009)

Abstract In this paper we present a poly siloxane containing covalently bound indoaniline dye, which decolorizes during reaction with a poly siloxane bearing vinyl and Si‐H groups in the presence of a Karstedt catalyst. Poly siloxane bearing indoaniline endgroups were prepared from (2‐allyl‐4‐(4‐(ethyl(2‐hydroxyethyl)amino)phenylimino)‐ 6‐methoxycyclohexa‐2,5‐dienone respectively 2‐allyl‐4‐(4‐(ethyl(2‐hydroxyethyl)amino)phenylimino)cyclohexa‐2,5‐ dienone) and Si‐H terminated poly siloxane. The structure was verified by IR‐, 1 H‐NMR spectroscopy, and MALDI‐TOF mass spectrometry. The obtained blue colored poly siloxane is suitable as dye indicator for crosslinking, for example, for a time‐controlled preparation of dental impressions. Copyright © 2009 John Wiley &amp; Sons, Ltd.
The effect of interpolation on imaging and AVO: A Viking case study (2010)

Abstract The use of prestack interpolation prior to prestack migration to improve AVO analysis on image gathers is demonstrated on an exploration play. The interpolation achieves this improvement by reducing migration artifacts. AVO analysis attempts to estimate fundamental information from surface seismic data and likely will be used more frequently if the estimates can be more accurately produced. Land 3D seismic typically has poor and irregular sampling. This poor sampling creates migration noise, which is a material cause of inaccurate AVO estimates. Prestack 5D interpolation is applied prior to prestack migration and AVO analysis on the imaged gathers to address this noise problem. The interpolation algorithm includes offset and azimuth dimensions that preserve AVO information. This method is evaluated bycomparing the results to those of alternate approaches, such as superbinning, that suppress this kind of noise in AVO analysis. The evaluation is determined by comparing our ability to predict the reservoir quality of a gas-charged sandstone reservoir with 48 well penetrations. We compare migrated gathers, AVO attribute stacks, and attribute maps in our analysis. We also generate scatter plots of the AVO attribute values against measures of reservoir quality at the well control points to allow a quantitative measure of the improvements. The interpolation method yields gathers, stacks, and maps that all appear to be better resolved and less noisy than the other methods. The scatter plots demonstrate a measurable and significant improvement from the interpolation method, especially compared to superbinning. This work suggests interpolation before imaging, and imaging before AVO analysis, should be performed on land 3D surface seismic data.
Terahertz waveform synthesis in integrated thin-film lithium niobate platform (2023)

Bridging the ``terahertz gap” relies upon synthesizing arbitrary waveforms in the terahertz domain enabling applications that require both narrow band sources for sensing and few-cycle drives for classical and quantum objects. However, realization of custom-tailored waveforms needed for these applications is currently hindered due to limited flexibility for optical rectification of femtosecond pulses in bulk crystals. Here, we experimentally demonstrate that thin-film lithium niobate circuits provide a versatile solution for such waveform synthesis through combining the merits of complex integrated architectures, low-loss distribution of pump pulses on-chip, and an efficient optical rectification. Our distributed pulse phase-matching scheme grants shaping the temporal, spectral, phase, amplitude, and farfield characteristics of the emitted terahertz field through designer on-chip components. This strictly circumvents prior limitations caused by the phase-delay mismatch in conventional systems and relaxes the requirement for cumbersome spectral pre-engineering of the pumping light. We provide a toolbox of basic blocks that produce broadband emission up to 680 GHz and far-field amplitudes of a few V m<sup>-1</sup> with adaptable phase and coherence properties by using near-infrared pump pulse energies below 100 pJ.
Long Term Results of BL22 (CAT-3888) in Multiply Relapsed Hairy Cell Leukemia. (2009)

Abstract Abstract 3442 Poster Board III-330 BL22 is a 63 kDa anti-CD22 recombinant immunotoxin containing truncated Pseudomonas exotoxin and variable domains from an anti-CD22 antibody. Patients with multiply relapsed/refractory hairy cell leukemia received BL22 and achieved 19 (61%) complete remissions (CRs) and 6 (19%) partial responses (PRs) in phase I testing, and 17 (47%) CRs plus 9 (25%) PRs in phase II testing (n=36), for overall response rates (ORR) of 72-81%. The average dose/cycle was the same for phase I and II (29 vs 33 ug/Kg x3). The dose for phase II was 40 ug/Kg x3 initially and 30 ug/Kg x3 for retreatment, but retreatment was held if patients had hematologic remission (HR, neutrophils ≥ 1500/mm3, Hgb ≥ 11 g/dL, and platelets ≥ 100,000/mm3) after cycle 1. Disease-free survival (DFS, CR duration) for phase II has not yet been reached at a median of 32 (range 4-62) months, with 12 (71%) of 17 CRs still ongoing. Considering all 36 CRs from phase I and II testing, median DFS was 33 (3-112) months with 15 (42%) of 36 CRs ongoing. Patients in CR usually underwent bone marrow biopsy every 6 months for 2 years and yearly thereafter, and after relapsing usually remained in HR. In fact, the median HR duration of these patients has not yet been reached at 42 (range 4-112) months, with 24 (67%) of the 36 patients remaining in HR or CR. Outcomes were better for those with pre-BL22 spleens measuring ≤ 200 mm in height than those with either prior splenectomy or spleens &gt; 200 mm, in terms of CR (68% vs 34%, p=0.007), ORR 95% vs 48%, p=0.000003), and DFS (median 69+ vs 27 mo, p=0.002). In contrast, CR rates or DFS was not related to whether patients had &lt;1 (n=28) or &gt;1 (n=8) years of response to their last course of purine analog (p=0.5-0.75). Of 69 patients who received BL22, 8 (12%) had a completely reversible hemolytic uremic syndrome (HUS) and all maintained normal renal function after a median 80 (9-112) months of follow-up. We conclude that BL22 is highly active producing durable remissions in chemoresistant HCL, particularly in patients with limited disease burden. Testing is underway with a high-affinity version of BL22, called HA22 (CAT-8015). Disclosures Kreitman: NIH: Patents &amp; Royalties. Off Label Use: BL22 is a recombinant immunotoxin which targets CD22+ cells. FitzGerald:NIH: Patents &amp; Royalties. Pastan:NIH: Patents &amp; Royalties.
Phase Change Data Recording Imaging Using Electric Force Microscopy based on Maxwell Stress Microscopy (1999)

Crystallised and amorphous phase change materials were imaged using two electric force microscopy systems : surface potential microscopy and electric field gradient microscopy. These first experiments permit to detect and observe information recorded in phase change layer with a scanning probe technique in a non contact mode and with an easy sample preparation. The topography can be separated from the electrical information. The lateral resolution is promising to be better than few ten nanometers.
Figure S3 from Genetic Alterations in the PI3K/AKT Pathway and Baseline AKT Activity Define AKT Inhibitor Sensitivity in Breast Cancer Patient-derived Xenografts (2023)

&lt;p&gt;Low pAkt S473 is associated with resistance to AZD5363 monotherapy&lt;/p&gt;
Characterization of Substituted Polyphosphazene Membranes − Pure and Mixed Gas Results (2006)

Here, we report the transport properties of substituted polyphosphazenes membranes for separation and purification of CO2 for in-situ resource utilization (ISRU) processes. This paper includes pure and mixed gas permeation data of gases for the methoxy ethoxy ethanol (MEE)-substituted polyphosphazenes. Significant differences in transport properties of gases have been observed for the cross-linked and un-cross-linked polymer membranes. The CO2/N2 ideal separation factors for the un-cross-linked and cross-linked membrane for 74% MEE polyphosphazene were 16 and 43 at 22 °C, respectively. An effort has been made to relate these differences to polymer structure through apparent energy of activation calculations and observed glass transition temperatures. The CO2 permeability for the cross-linked 74% MEE polyphosphazene membrane decreased from 71 to 20 barrrers with an increase in the CO2/N2 ideal separation factor from 43 to 110 as the membrane temperature is reduced from 22 to −20 °C. Also, experiments were performed under simulated Martian atmospheric conditions for the 48% MEE polyphosphazene at 80 and 800 mbar feed pressure. The permeability of all gases is independent of the feed pressure in the range 1500−3000 mbar for the 74% MEE polyphosphazene and at low pressures (80−800 mbar) for 48% MEE polyphosphazene. The variations in permeability of gases with temperature for both the 74% and the 48% MEE polyphosphazenes are also reported in this article.
La salamandre et nous (2002)

> Tout est perdu, fors l'honneur crivait le roi Franois 1 er aprs la cuisante dfaite qu'il avait subie face aux troupes de l'Empereur Charles Quint en 1525 Pavie. Dfait, prisonnier, son arme dtruite, le roi de France avait quelques raisons de s'abandonner au pessimisme. Pourtant, il aurait pu puiser des raisons d'optimisme dans le symbole de la salamandre, animal hraldique marquant l'empreinte du roi dans tant de chteaux de France, notamment Fontainebleau ou Blois. En effet, cet amphibien urodle, au mme titre que le triton, est, chez les vertbrs, le champion toutes catgories de la rgnration. Il est capable de rgnrer totalement des membres, la queue, parfois l'oeil, et mme de larges portions du coeur. De mme, malgr le dsastre, le Royaume de France devait puiser en lui les ressources ncessaires pour bientt se redresser. La fabuleuse capacit de rgnration de la salamandre et du triton ne constitue certainement pas une exception parmi les tres multicellulaires, mtazoaires et mtaphytes. Chez les vertbrs, chacun sait que le lzard peut, lui aussi, faire le sacrifice de la queue par laquelle tentent de l'attraper les enfants, puis la rgnrer. Certains poissons ont, en ce domaine, galement de la ressource. Le poisson zbre, par exemple, peut efficacement rparer des nageoires largement amputes. Chez les invertbrs, la capacit de rgnrer des parties du corps est trs frquemment observe, chez les crustacs, les insectes, les mollusques, les annlides, les planaires et les cnidaires tels que l'hydre. Dans ces deux derniers embranchements animaux, la capacit rgnrative est mme prodigieuse. Ainsi, un plathelminthe coup en plusieurs centaines de fragments engendrera, quelques semaines aprs, autant de vers complets. Chez les cnidairs, l'hydre peut, comme nous le rappelle la mythologie, tout rgnrer, en particulier la tte Quant au monde vgtal, la capacit de rgnration y est gnrale et considrable . Par consquent, les pitres performances rgnratives des mammifres, des oiseaux et de la plupart des poissons font figure d'exception dans le monde vivant, et non point de rgle. Les mcanismes qui prsident au proces-
Advanced Solution 2D-NMR of Fluoropolymers (2011)

In this paper, new methodology is described for characterizing the structures of fluoropolymers. The methods are based on 19F/1HH/13C multiple resonance and 2D NMR experiments, taking advantage of the unique ranges of 19F-19F and 19F-13C couplings. 19F-13C heteronuclear single quantum correlation (HSQC) 2D-NMR experiments based on 1JCF and 2JCF experiments provide short range correlations within monomer units and in many cases help to distinguish between structure fragments identified using 3JFF, 4JFF and 5JFF correlations. COSY and especially selective COSY experiments provide high resolution 2D-NMR experiments with correlations based on 3JFF, 4JFF and 5JFF couplings. These permit identification of long-range structure correlations between monomer units. Examples using poly(hexafluoropropylene oxide) and poly(vinylidene fluoride) are shown.
ChemInform Abstract: Strategies for Asymmetric Synthesis of Amino Acids with γ,δ‐Unsaturation (2012)

Abstract Review: 133 refs.
ChemInform Abstract: myo‐Inositol 1,4,6‐Triphosphate: A New Synthetic Ca2+‐Mobilising Inositol Phosphate. (1994)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Two‐Photon Physical Organic, and Polymer Chemistry: Theory, Techniques, Chromophore Design, and Applications (2007)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The potential role of α2‐macroglobulin in the control of cysteine proteinases (gingipains) from Porphyromonas gingivalis (1997)

Porphyromonas gingivalis is closely associated with the development of some forms of periodontitis. The major cysteine proteinases released by this bacterium hydrolyze peptide bonds only after arginyl (gingipain R) or lysyl residues (gingipain K). No target protein inhibitors have been identified for either enzyme, leading us to investigate their inhibition by human plasma alpha 2-macroglobulin (alpha 2M). Both 50- and 95 kDa gingipain R were efficiently inhibited by alpha 2M, whereas the catalytic activity of gingipain K could not be eliminated. All 3 enzymes were, however, inhibited by a homologous macroglobulin from rat plasma, alpha 1-inhibitor-3 (alpha 1I3). alpha-Macroglobulins must be cleaved in the so-called "bait region" in order to inhibit proteinases by a mechanism involving physical entrapment of the enzyme. A comparison of the amino acid sequences of the 2 macroglobulins indicates that the lack of lysyl residues within the bait region of alpha 2M protects Lys-specific proteinases from being trapped. On this basis, other highly specific proteinases might also not be inhibited by alpha 2M, possibly explaining the inability of the inhibitor to control proteolytic activity in some bacterially induced inflammatory states, despite its abundance (2-5 mg/ml) in vascular fluids.
A Deep Reinforcement Learning Framework for Fast Charging of Li-Ion Batteries (2022)

One of the most crucial challenges faced by the Li-ion battery community concerns the search for the minimum time charging without damaging the cells. This goal can be achieved by solving a large-scale constrained optimal control problem, which relies on accurate electrochemical models. However, these models are limited by their high computational cost, as well as identifiability and observability issues. As an alternative, simple output-feedback algorithms can be employed, but their performance strictly depends on trial and error tuning. Moreover, particular techniques have to be adopted to handle safety constraints. With the aim of overcoming these limitations, we propose an optimal-charging procedure based on deep reinforcement learning. In particular, we focus on a policy gradient method to cope with continuous sets of states and actions. First, we assume full state measurements from the Doyle–Fuller–Newman (DFN) model, which is projected to a lower dimensional feature space via the principal component analysis. Subsequently, this assumption is removed, and only output measurements are considered as the agent observations. Finally, we show the adaptability of the proposed policy to changes in the environment’s parameters. The results are compared with other methodologies presented in the literature, such as the reference governor and the proportional–integral–derivative approach.
Estimation of Angular Power Spectrum Using Multikernel Adaptive Filtering (2022)

This paper addresses the problem of estimating the angular power spectrum (APS) of massive multiple input multiple output wireless channels. Estimating the APS is useful, for instance, for simplifying the downlink channel estimation problem in frequency division duplex systems. We propose an efficient online algorithm that estimates the APS from the channel spatial covariance matrix. The proposed algorithm approximates the APS as a sum of Gaussian functions and leverages the framework of multikernel adaptive filtering.