gebhart/patrepeval huggingface dataset:
Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p–Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV (2022)

Neutral pion (π$^0$) and η meson production cross sections were measured up to unprecedentedly high transverse momenta (p$_T$) in p–Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16TeV. The mesons were reconstructed via their two-photon decay channel in the rapidity interval −1.3 &lt; y &lt; 0.3 in the ranges of 0.4 &lt; p$_T$ &lt; 200 GeV/c and 1.0 &lt; p$_T$ &lt; 50 GeV/c, respectively. The respective nuclear modification factor (R$_{pPb}$) is presented for p$_T$ up to of 200 and 30 GeV/c, where the former was achieved by extending the π$^0$ measurement in pp collisions at $\sqrt{s}$ = 8TeV using the merged cluster technique. The values of R$_{pPb}$ are below unity for p$_T$ &lt; 10 GeV/c, while they are consistent with unity for p$_T$ &gt; 10 GeV/c, leaving essentially no room for final state energy loss. The new data provide strong constraints for nuclear parton distribution and fragmentation functions over a broad kinematic range and are compared to model predictions as well as previous results at $\sqrt{s_{\rm NN}}$ = 5.02TeV.
Promoter‐upstream activator sequences are required for expression of the xylS gene and upper‐pathway operon on the Pseudomonas TOL plasmid (1990)

Stimulation of transcription from the Pseudomonas TOL plasmid xylS gene promoter (Ps) and the upper-pathway operon promoter (Pu) is dependent on the positive regulator protein XylR activated by an effector molecule such as 3-cholorotoluene, and on RpoN, an RNA polymerase sigma factor. Mutational analysis of the Ps and Pu promoters showed that upstream activator sequences located between -110 and -218bp upstream of the main transcription initiation point are required for regulated expression from these promoters. A search for homologous nucleotide sequences in the -110 to -218bp region in Pu and Ps revealed conserved sequences that may act as putative recognition sequences for the XylR protein. Ps and Pu exhibit another well-conserved region at around -50bp, which is homologous to corresponding sites in other RpoN-dependent promoters and may constitute a binding site for integration host factor (IHF).
Wide-angle X-ray scattering study of crystalline orientation in reticulate-doped polymer composites (1998)

Reticulate doping consists of casting a composite film from a solution containing both a polymer and a charge-transfer complex (CTC) and allowing the conductive free radical salt to recrystallize as the solvent is removed from the polymer. In this study, a highly branched, low molecular weight polyethylene (PE) was doped with the CTC tetrathiafulvalene–tetracyanoquinodimethane (TTF–TCNQ). Wide-angle X-ray scattering (WAXS), conductivity, optical microscopy, stress relaxation, and differential scanning calorimetry (DSC) measurements were used to show the effect of the addition of filler and uniaxial orientation on the mechanical and electrical properties of the composites. It has been shown that increasing TTF–TCNQ concentration shifts the preferential orientation of the crystalline phase of the PE from slightly perpendicular to slightly parallel to the casting surface. WAXS measurements were made on samples that were uniaxially stretched at 80°C and cooled to room temperature. These experiments showed a smaller incremental increase in crystalline orientation with increasing TTF–TCNQ. This observation was consistent with a drop in initial relaxation times calculated from room temperature stress relaxation experiments. In the unoriented composites, increasing TTF–TCNQ loading had no effect on PE crystallinity; however, the increase in crystallinity caused by uniaxial stretching was decreased by the presence of TTF–TCNQ. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 70: 1785–1794, 1998
Tensile behavior of Nafion and sulfonated poly(arylene ether sulfone) copolymer membranes and its morphological correlations (2006)

Abstract The tensile stress–strain behavior of Nafion 117 and sulfonated poly(arylene ether sulfone) copolymer (BPSH35) membranes were explored with respect to the effects of the strain rate, counterion type, molecular weight, and presence of inorganic fillers. The yielding properties of the two films were most affected by the change in the strain rate. The stress–strain curves of Nafion films in acid and salt forms exhibited larger deviations at strains above the yield strain. As the molecular weight of the BPSH35 samples increased, the elongation at break improved significantly. Enhanced mechanical properties were observed for the composite membrane of BPSH35 and zirconium phenylphosphonate (2% w/w) in comparison with its matrix BPSH35 film. The stress‐relaxation behavior of Nafion and BPSH35 membranes was measured at different strain levels and different strain rates. Master curves were constructed in terms of plots of the stress‐relaxation modulus and time on a double‐logarithm scale. A three‐dimensional bundle‐cluster model was proposed to interpret these observations, combining the concepts of elongated polymer aggregates, proton‐conduction channels, and states of water. The rationale focused on the polymer bundle rotation/interphase chain readjustment before yielding and polymer aggregate disentanglements and reorientation after yielding. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 1453–1465, 2006
Excited-State Dynamics of fac-[ReI(L)(CO)3(phen)]+ and fac-[ReI(L)(CO)3(5-NO2-phen)]+ (L = Imidazole, 4-Ethylpyridine; Phen = 1,10-Phenanthroline) Complexes (2004)

The nature and dynamics of the lowest excited states of fac-[Re(I)(L)(CO)(3)(phen)](+) and fac-[Re(I)(L)(CO)(3)(5-NO(2)-phen)](+) [L = Cl(-), 4-ethyl-pyridine (4-Etpy), imidazole (imH); phen = 1,10-phenanthroline] have been investigated by picosecond visible and IR transient absorption spectroscopy in aqueous (L = imH), acetonitrile (L = 4-Etpy, imH), and MeOH (L = imH) solutions. The phen complexes have long-lived Re(I) --> phen (3)MLCT excited states, characterized by CO stretching frequencies that are upshifted relative to their ground-state values and by widely split IR bands due to the out-of-phase A'(2) and A"nu(CO) vibrations. The lowest excited states of the 5-NO(2)-phen complexes also have (3)MLCT character; the larger upward nu(CO) shifts accord with much more extensive charge transfer from the Re(I)(CO)(3) unit to 5-NO(2)-phen in these states. Transient visible absorption spectra indicate that the excited electron is delocalized over the 5-NO(2)-phen ligand, which acquires radical anionic character. Similarly, involvement of the -NO(2) group in the Franck-Condon MLCT transition is manifested by the presence of an enhanced nu(NO(2)) band in the preresonance Raman spectrum of [Re(I)(4-Etpy)(CO)(3)(5-NO(2)-phen)](+). The Re(I) --> 5-NO(2)-phen (3)MLCT excited states are very short-lived: 7.6, 170, and 43 ps for L = Cl(-), 4-Etpy, and imH, respectively, in CH(3)CN solutions. The (3)MLCT excited state of [Re(I)(imH)(CO)(3)(5-NO(2)-phen)](+) is even shorter-lived in MeOH (15 ps) and H(2)O (1.3 ps). In addition to (3)MLCT, excitation of [Re(I)(imH)(CO)(3)(5-NO(2)-phen)](+) populates a (3)LLCT (imH --> 5-NO(2)-phen) excited state. Most of the (3)LLCT population decays to the ground state (time constants of 19 (H(2)O), 50 (MeOH), and 72 ps (CH(3)CN)); in a small fraction, however, deprotonation of the imH.+ ligand occurs, producing a long-lived species, [Re(I)(im.)(CO)(3)(5-NO(2)-phen).-]+.
Liquid Combination with High Refractive Index Contrast and Fast Scanning Speeds for Electrowetting Adaptive Optics (2018)

Electrowetting adaptive optical devices are versatile, with applications ranging from microscopy to remote sensing. The choice of liquids in these devices governs its tuning range, temporal response, and wavelength of operation. We characterized a liquid system, consisting of 1-phenyl-1-cyclohexene and deionized water, using both lens and prism devices. The liquids have a large contact angle tuning range, from 173 to 60°. Measured maximum scanning angle was realized at ±13.7° in a two-electrode prism, with simulation predictions of ±18.2°. The liquid's switching time to reach 90° contact angle from rest, in a 4 mm diameter device, was measured at 100 ms. Steady-state scanning with a two-electrode prism showed linear and consistent scan angles of ±4.8° for a 20 V differential between the two electrodes, whereas beam scanning using the liquid system achieved ±1.74° at 500 Hz for a voltage differential of 80 V.
Parameters for Assessing Oil Reservoir Water Flooding Additives (2009)

This paper is concerned with deriving parameters for assessing the effectiveness of fluid additives to improve water flooding during enhanced oil recovery. We focus particularly on the use of rheological modifiers, which do not show monotonic behavior with the shear rate within the rock pores. We derive figures of merit based on (1) relative retardation in high and low permeability rock, (2) profile flattening, and (3) injectivity index. Only the last of these provides a measure of water flood profile improvement while maintaining sufficient fluid flow and production levels.
Highly wavelength-dependent evanescent tunneling loss in dispersion-engineered tapered double-cladding fibers (2008)

The techniques of modifying the propagation constant beta(omega) of optical fibers by using different materials or structures can be called dispersion engineering. Since the variations of beta(omega) can also substantially affect the propagation losses through the mode cutoff effects, the dispersion engineering on beta(omega) has been employed to achieve fundamental-mode cutoff (LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01-C</sub> ) filters. The LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01-C</sub> fiber filters with a high cutoff slope are essential for building practical silica-based S-band erbium-doped fiber amplifiers and lasers so as to expand the communication bandwidth to 1450 nm [1-3]. A sharp LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01-C</sub> filter providing high wavelength-dependent losses [3] is also useful for wavelength tuning in ultra-high gain efficiency fiber lasers. The cutoff slope can be increased by modifying waveguide dispersion or by modifying material dispersion. However, the achieved cutoff slopes by simply modifying either one of the dispersions are not good enough to clearly separate the guiding and antiguiding wavelengths.
Theoretical design of multi-core photonic crystal fiber based 1&#x00D7;4 power splitters (2008)

A new design of multi-core photonic crystal fiber (PCF) based 1×4 power splitter is demonstrated numerically. An equal power division in a ∼6 mm long PCF device is confirmed through an accurate finite-element beam-propagation-method.
Experimental Investigation of the Unsteady Discharge Flow in a Centrifugal Impeller with Splitter Blades (2009)

The discharged flow characteristic from an unshrouded centrifugal impeller with splitter blades is experimentally investigated.The effects of the main blade and the splitter blade on the unsteady flow quantities are analyzed.An X-type hot-film anemometry is used to measure the flow quantities at the impeller outlet and diffuser inlet in three spanwise positions.The result shows that the difference between the splitter and main blade effects on flow becomes most significant at the mid-span position.At the impeller outlet near the main blade wake region,the radial velocity reduces by 62%,the tangential velocity increases by 2%,and the absolute flow angle decreases by about 8 degrees,comparing with that near the splitter blade wake region.At the diffuser inlet,the difference between the splitter and the main blade wake regions is still visible though it has been weakened.The base frequency of the unsteady flow is a main blade or a splitter blade passing frequency.The base and second harmonics exert dominating effects on the unsteady flow.Reynolds stress levels in the discharged flow from the main blade are higher than that from the splitter blade.Especially in the mid-span region,the Reynolds stress difference reaches to 68%.The absolute outflow angle changes more than 10 degrees in the spanwise,which indicates that separating or rushing loss may be produced in the present two-dimensional vaned diffuser,so a three-dimensional vaned diffuser seems to become necessary.
A two time scale approach for coordinated multi-point transmission and reception over practical backhaul (2014)

We consider the problem of maximizing a given utility over heterogeneous wireless networks (HetNets) that have a practical (non ideal) backhaul. Such a backhaul is characterized by high latency and possibly limited capacity, which necessitates the use of semi-static schemes for resource management. The management in these semi-static schemes is done at two time scale s over a coordination unit within the HetNet, that comprises of a set of transmission points (TPs) and a set of users. In this paper we consider one such promising semi-static resource management scheme in which the group of beam vectors that each TP in the coordination unit should employ and the set of users that it should serve is decided at a coarse time scale in a centralized manner, while the fine time scale per-slot scheduling is done in a distributed fashion with each TP using its assigned beam group (precoder) to serve its associated set of users. We propose an optimal two time scale policy for this scheme that guarantees a long-term optimality with respect to the given utility. However, this policy involves repeatedly solving a joint precoder set assignment and user association problem, which we prove is strongly NP-hard. Consequently, we develop an approximation algorithm for the latter optimization problem and also prove that the two time scale policy that employs this approximation algorithm also yields an approximate long-term optimality with respect to the given utility. Finally, we also incorporate another practically relevant constraint which demands that the per-slot scheduling policy of each TP remain unaltered.
Responses of the murine esophageal microcirculation to acute exposure to alkali, acid, or hypochlorite (2007)

Ingestion of alkali- and/or hypochlorite-based household cleaners as well as strong acids is a major cause of esophageal wall injury and subsequent stricture worldwide. Little is known about the mechanisms that underlie the esophageal injury that results from exposure to these toxic agents. In this study, the actions of NaOH (10%, 5% & 2.5%), KOH (10%, 5%, & 2.5%), NaOCl (5.25%), and HCl (10%, pH=2) on the esophageal microcirculation were evaluated by intravital microscopy, LASER Doppler flowmetry and histo-pathological grading. Intravital microscopy was used to monitor the diameter of arterioles and venules, the adhesion and movement of leukocytes in venules, and time cessation of blood flow. While higher concentrations of NaOH and KOH elicited rapid thrombosis in arterioles and venules, lower concentrations as well as NaOCl, HCl, or saline did not produce thrombosis. An accumulation of adherent leukocytes was not observed with any agent. Histo-pathological evaluation revealed marked cellular and interstitial edema in the mucosa with alkali, while HCl and NaOCl decreased the thickness epithelial layer. These findings suggest that direct chemical injury and ischemia are dominant processes, while inflammation is less important, in the pathogenesis of acute corrosive injury to the esophageal mucosa. (P01 DK43785)
Caractérisation des facteurs associés à la perte d'expression de AIP dans les adénomes hypophysaires somatotropes (2010)

peer reviewed
Preparation of novel polythioether dendrons on a solid supportElectronic supplementary information (ESI) available: procedures for the preparation of monomer 3, resins G1–G4, 4–8, and relevant characterisation data. See http://www.rsc.org/suppdata/cc/b3/b302324a/ (2003)

A synthetic scheme for the solid-phase synthesis of unprecedented polythioether dendrons has been established, the dendrons prepared up to the fourth generation, and the applicability of the dendronized resins for supported catalysis has been demonstrated.
Microfluidic polymerase chain reaction (2008)

We implement microfluidic technology to miniaturize a thermal cycling system for amplifying DNA fragments. By using a microfluidic thermal heat exchanger to cool a Peltier junction, we have demonstrated rapid heating and cooling of small volumes of solution. We use a miniature K-type thermocouple to provide a means for in situ sensing of the temperature inside the microrefrigeration system. By combining the thermocouple, two power supplies controlled by a relay system, and computer automation, we reproduce the function of a commercial polymerase chain reaction thermal cycler and demonstrate amplification of a DNA sample of about 1000 base pairs.
Repair of Longitudinal Joints and Cracks (2009)

Longitudinal cracking and longitudinal joint separations are commonly observed distresses in concrete pavements. The Texas Department of Transportation instituted a research project to determine the causes and to recommend repair methods. Repair methods that are generally recommended to repair cracks and joints are (1) cross stitching; (2) slot stitching; and (3) stapling. Finite element modeling was performed to determine the stress distribution in the concrete for each method when a truck tire load was placed on one side of the joint. Assuming no interlock between joint faces, the slot stitching model produced the lowest stress and cross stitching produced the highest stress, when the load was placed on the upper end of the diagonal bar. Cross stitching is recommended for repairing narrow cracks and slot stitching is recommended for wider cracks and joints.
Titelbild: Reversible Markierung in lebenden Zellen mit retro‐konstruierten HaloTags ermöglicht hoch‐ und superauflösende Langzeitbildgebung (Angew. Chem. 18/2023) (2023)

Reversible posttranslational fluorescence labeling opens exciting possibilities for advanced and superresolution microscopy techniques. In their Research Article (e202219050) Michael Holtmannspötter, Jacob Piehler et al. have engineered HaloTag variants with restored dehalogenase activity, which enzymatically exchange fluorogenic substrates at the second-to-minutes time scale. Thus, long-term time-lapse imaging with utmost spatial and temporal resolution is achieved with particularly striking performance in single molecule tracking and localization microscopy. Reversible posttranslational fluorescence labeling opens exciting possibilities for advanced and superresolution microscopy techniques. In their Research Article (e202219050) Michael Holtmannspötter, Jacob Piehler et al. have engineered HaloTag variants with restored dehalogenase activity, which enzymatically exchange fluorogenic substrates at the second-to-minutes time scale. Thus, long-term time-lapse imaging with utmost spatial and temporal resolution is achieved with particularly striking performance in single molecule tracking and localization microscopy. Sandwich Compounds DNA Nanotechnology Anticancer Agents
Channel Estimation with Low-Precision Analog-to-Digital Conversion (2010)

We consider the problem of estimating the impulse response of a dispersive channel when the channel output is sampled using a low-precision analog-to-digital converter (ADC). While traditional channel estimation techniques require about 6 bits of ADC precision to approach full-precision performance, we are motivated by applications to multiGigabit communication, where we may be forced to use much lower precision (e.g., 1-3 bits) due to considerations of cost, power, and technological feasibility. We show that, even with such low ADC precision, it is possible to attain near full-precision performance using closed-loop estimation, where the ADC input is dithered and scaled. The dither signal is obtained using linear feedback based on the Minimum Mean Squared Error (MMSE) criterion. The dither feedback coefficients and the scaling gains are computed offline using Monte Carlo simulations based on a statistical model for the channel taps, and are found to work well over wide range of channel variations.
Memory Technologies: Status and Perspectives (2014)

This chapter provides an outlook for the current baseline memory technologies based on storing electron charge, which include dynamic random access memory (DRAM), static random access memory (SRAM), and flash memory. The physics of all charge-based memory devices is analyzed using the barrier model, which allows derivation of the key performance parameters as well as scaling and performance projections. This chapter has a special emphasis on the energetics of charge-based memory, including cell, array, and system levels.
Abstract 9908: Transcatheter Aortic Valve Replacement for High-risk Severe Aortic Stenosis: An Analysis of Incidence, Predictors and Prognostic Impact of New-onset Postprocedural Atrial Fibrillation- Mayo Clinic Experience (2013)

Introduction: Atrial fibrillation (AF) is a serious complication, which occurs in 30% to 40% of patients after surgical aortic valve replacement (SAVR) and contributes to adverse outcomes. Advanced technology has enabled transcatheter aortic valve replacement (TAVR) in patients with High-risk Severe Aortic Stenosis (HRSAS). In these patients, the compliance of the systemic vasculature is an independent predictor of diastolic dysfunction, a known predictor of postoperative AF (POAF). We hypothesize that patients with HRSAS undergoing TAVR represent a population at increased risk for POAF. METHODS: The medical records of 195 TAVR patients at the Mayo Clinic from November 2008 to January 2013 were analyzed. All patient demographic, clinical, pre- and post-procedural outcomes were collected from the patients’ medical records, and reviewed to ascertain all cases of POAF (AF ≤30 days of surgery). Patients with a prior history of AF (n= 75 (38.5%)) were excluded. Logistic regression analysis was used to identify clinical predictors of POAF after TAVR. Results: The mean age of the study population was 80.8±7.8 years and 60.8% (n=73) were men. The mean STS risk score was 8.9±5.1. Of the 120 patients without prior AF, 20.8% (n=25) developed new-onset POAF after TAVR. Patients who developed POAF were more likely to have undergone a transapical or transaortic TAVR approach (OR 3.20; 95% CI (1.3-8.0), had a higher incidence of renal complications (52.0% vs 21.5%; p= 0.003), greater hospital length of stay (7.4±2.58 vs 5.0±2.6 days; p= 0.0003, and a trend toward higher 30-day mortality (28.0% vs 13.7%; p= 0.09) and pulmonary complications (16.0% vs 5.4%; p= 0.08) compared with those who did not develop POAF, respectively. Neurologic complications were not different between the 2 group (4.0% vs 3.2%; p= 0.85). Conclusions: Patients with High-risk Severe Aortic Stenosis undergoing TAVR have increased risk of POAF, primarily associated with a transapical or aortic surgical approach. Patients who develop POAF had higher incidence of post-procedural complications and longer hospitalizations. Therefore, perioperative strategies aimed at prevention of POAF are as important in TAVR patients as in those undergoing SAVR.