gebhart/patrepeval huggingface dataset:
Optical self-focusing in photorefractive crystals and its compensation by a self-pumped phase conjugator (1985)

We have determined that sufficiently intense light passing through photorefractive crystals such as barium titanate BaTiO3 and strontium barium niobate SrxBa1−xNb2O6 will be thermally self-focused and self-phase modulated in much the same observed with light of extraordinary polarization traveling along an a axis. More than ten diffraction rings were observed with a 1.8-W 3-mm diam Gaussian beam from a 488-nm Ar-ion laser. The experimental parameters, such as number of diffraction rings, focal length, and angular divergence, as a function of laser intensities and at different optical wavelengths were also studied.
On the properties of Sierpinski gasket fractal microstrip antennas (2018)

Abstract A set of fractal microstrip patch antennas having a modified Sierpinski Gasket geometry is explored and compared with a genetically optimized patch. The resonant behavior, radiation patterns and the box‐counting dimensions of the antennas have been investigated in order to understand the miniaturization properties. Finally, the Sierpinski‐based antennas have been compared with a genetic optimized antenna.
Pyridine‐Containing Triphenylbenzene Derivatives with High Electron Mobility for Highly Efficient Phosphorescent OLEDs (2008)

Two pyridine-containing triphenylbenzene derivatives of 1,3,5-tri(m-pyrid- 3-yl-phenyl)benzene (TmPyPB) and 1,3,5-tri(p-pyrid-3-yl-phenyl) benzene (TpPyPB) (see figure) with high electron mobility and high triplet energy level were designed and synthesized. Highly efficient blue and green phosphorescent OLEDs were achieved by using TmPyPB and TpPyPB as an electron-transport layer, respectively.
The use of acrylamide disc electrophoresis in the study of isozymes in two populations of sea anemones (1966)

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Bi-functional interfaces by poly(ionic liquid) treatment in efficient pin and nip perovskite solar cells (2021)

In this work, we demonstrate how the use of a poly(ionic liquid) interlayer in combination with perovskite solar cells provides a bi-functionality of the surface allowing to concomitantly reduce the energy losses, enhance the charge extraction and improve the device stability all at once.
Advanced CT acquisition protocol for comprehensive assessment of prosthetic heart valves and the thoracic aorta using dual-source CT and iterative reconstruction (2015)

Poster: ESCR 2015 / P-0008 / Advanced CT acquisition protocol for comprehensive assessment of prosthetic heart valves and the thoracic aorta using dual-source CT and iterative reconstruction by: R. P. J. Budde , M. L. Dijkshoorn, J. Bekkers, L. E. Swart, M. van Straten, K. Nieman, G. P. Krestin; Rotterdam/NL
Efficient Probabilistic and Geometric Anatomical Mapping Using Particle Mesh Approximation on GPUs (2011)

Deformable image registration in the presence of considerable contrast differences and large size and shape changes presents significant research challenges. First, it requires a robust registration framework that does not depend on intensity measurements and can handle large nonlinear shape variations. Second, it involves the expensive computation of nonlinear deformations with high degrees of freedom. Often it takes a significant amount of computation time and thus becomes infeasible for practical purposes. In this paper, we present a solution based on two key ideas: a new registration method that generates a mapping between anatomies represented as a multicompartment model of class posterior images and geometries and an implementation of the algorithm using particle mesh approximation on Graphical Processing Units (GPUs) to fulfill the computational requirements. We show results on the registrations of neonatal to 2-year old infant MRIs. Quantitative validation demonstrates that our proposed method generates registrations that better maintain the consistency of anatomical structures over time and provides transformations that better preserve structures undergoing large deformations than transformations obtained by standard intensity-only registration. We also achieve the speedup of three orders of magnitudes compared to a CPU reference implementation, making it possible to use the technique in time-critical applications.
To share or not to share? iEEG evidence for state-dependent inequity encoding in the human OFC (2022)

Abstract Social decision-making requires the integration of reward valuation and social cognition systems, both dependent on the orbitofrontal cortex (OFC). How these two OFC functions interact is largely unknown. We recorded intracranial activity from the OFC of ten patients making choices in the context of different types of inequity (disadvantageous vs. advantageous). We found that high-frequency activity (70-150 HZ) encoded the amount of self-reward, consistent with previous reports. We also observed novel evidence for encoding in human OFC of the social counterpart’s reward as well as the type of inequity being experienced. Additionally, we find social context modulates reward encoding: depending on inequity type, reward encoding was switched on and off rapidly within electrodes, across trials. These results provide direct evidence for explicit encoding of self- and other- rewards in the human OFC, and for rapid and reversible changes in encoding schemes driven by socially relevant contexts.
Conceptual design and performance analysis of a novelCHPsystem integrated with solid oxide fuel cell and supercriticalCO2partial preheating cycle (2020)

The paper proposes a novel combined heating and power (CHP) system integrated with solid oxide fuel cell (SOFC) and supercritical CO2 (SCO2) partial preheating cycle to improve the energy utilization rate by employing the SCO2 cycle to recover the waste heat from the SOFC. The SCO2 partial preheating cycle can not only improve the net output power but also preheat the air supplied to the SOFC for enhancing the system efficiency. Sensitivity analysis is implemented to study the influences of six key parameters (ie, fuel flow rate, excess air ratio, fuel utilization factor, CO2 turbine inlet temperature, CO2 compressor pressure ratio, and CO2 split ratio) on the proposed system in terms of thermodynamic behaviors. And then the optimal operating conditions for the different objectives are determined by parametric optimization. The results indicate that the optimal overall electrical efficiency and CHP efficiency of the proposed system are 72.84% and 83.83% respectively, while the exergy efficiency can achieve 70.84%. Furthermore, the best trade-off result is obtained with the energy output of 434.71 kW and the exergy efficiency of 64.28%. Finally, the investigation demonstrates the fuel flow rate is the most sensitive parameter which should be determined with the comprehensive consideration of the efficiency and energy output, and the lower excess air ratio and higher CO2 turbine inlet temperature are preferred for power generation.
Identification of operationally tolerant liver transplant recipients (2010)

KEY POINTS:



(1) Liver allografts exhibit intrinsic tolerogenic properties that result in their spontaneous acceptance in many experimental animal models.



(2) In clinical transplantation, liver allografts require milder immunosuppression (IS) regimens than other organs, are remarkably resistant to antibody-mediated rejection, and only very rarely are lost because of immunological insults.



(3) A fraction of stable liver transplant recipients can withdraw from all IS therapy and then maintain normal graft function and not experience rejection. This phenomenon is known as spontaneous operational tolerance.



(4) The intentional discontinuation of IS in stable liver transplant recipients has led to successful weaning in almost 20% of recipients, but the true prevalence of spontaneous operational tolerance in unselected recipients is still unknown.



(5) The prevalence could be higher in pediatric recipients undergoing transplantation before 1 year of age and in adult recipients with more than 10 years of posttransplant follow-up.



(6) Rejection occurring during medically supervised IS weaning trials tends to be mild and, in the overwhelming majority of cases, can be easily resolved without the administration of high-dose IS.



(7) Tolerant liver recipients exhibit specific transcriptional patterns in peripheral blood and in liver tissue that may constitute future diagnostic markers of tolerance.



(8) There is still no formal proof that the discontinuation of low-dose IS in long-term surviving liver recipients improves the morbidity and mortality rates associated with IS therapy. Liver Transpl 16:S82-S86, 2010. © 2010 AASLD.
The dual role of the cAMP-dependent protein kinase C alpha subunit in T-cell receptor-triggered T-lymphocytes effector functions. (1992)

In order to directly evaluate the role of the cAMP-dependent protein kinase (PKA) catalytic (C) subunit in T-cell receptor- (TCR) triggered cytotoxic T-lymphocytes (CTL) effector functions, cells were studied after pretreatment with antisense oligomers complementary to mRNA for the C alpha or C beta subunits. C alpha subunit is shown to be predominantly expressed in CTL. In some experiments the pretreatment of the CTL with the C alpha antisense, but not with the control or C beta antisense oligomers, resulted in the inhibition of cAMP-independent PKA activity without significantly affecting the level of total cAMP-inducible PKA activity. In parallel assays, CTL which were pretreated with the C alpha antisense oligomer had enhanced antigen-bearing target cell-triggered-, anti-TCR monoclonal antibody-triggered-, and phorbol 12-myristate 13-acetate/A23187-triggered exocytosis of granules, as well as enhanced antigen-specific cytotoxicity. In contrast, the TCR-triggered gamma-interferon mRNA expression and gamma-interferon secretion were inhibited in C alpha antisense-pretreated CTL. These results suggest that the C alpha subunit of PKA may have a dual role in regulation of T-lymphocytes effector functions: (i) it may down-regulate TCR-triggered protein-synthesis independent responses such as cytotoxicity and exocytosis, thereby counteracting TCR-triggered activation even in the absence of the second messenger, cAMP, and (ii) the C alpha subunit activity is likely to be required for the nuclear and/or cytoplasmic events in CTL's activation involved in lymphokine synthesis and secretion.
RHRPMPOLS01 Point of Load: Qualification & Radiation Tests (2019)

This paper provides a detailed overview of the qualification activities including the radiation tests (both TID and SEE) of the RHRPMPOL01 IC device, a radiation hardened 7A synchronous step-down monolithic switching regulator with high precision internal voltage reference and integrated power MOSFETs for synchronous conversion. The device is the outcome of a development activity entitled “Miniaturised core element for Point of Load (PoL) conversion”, ESA TRP contract n. 4000107184/12/NL/LVH with STMicroelectronics.
CHARACTER ASSOCIATION AND PATH COEFFICIENT ANALYSIS IN HYBRID PIGEONPEACHARACTER ASSOCIATION AND PATH COEFFICIENT ANALYSIS IN HYBRID PIGEONPEACHARACTER ASSOCIATION AND PATH COEFFICIENT ANALYSIS IN HYBRID PIGEONPEA (1996)

Twenty-eight pigeonpea experimental hybrids of diverse origin and late maturity group obtained from Akola, Kanpur, Narendra Deo, Rajnendra Agricultural University and Banaras Hindu University along with two checks were evaluated for character association and path analysis. Correlation studies indicated that phenotypically yield was positively and significantly correlated with number of pods per plant (0.809), dry matter at maturity (0.755) and number of secondary branches (0.623) but at genotypic level the association was highest for dry matter at maturity (0.961). Path coefficient analysis showed that out of six independent characters having positive direct effect on seed yield, maximum contribution was of number of pods per plant (0.819) followed by dry matter at maturity (0.749) and 100-seed weight (0.478)
Measuring the Effect of Stereo Deficiencies on Peripersonal Space Pointing (2023)

State-of-the-art Virtual Reality (VR) and Augmented Reality (AR) headsets rely on singlefocal stereo displays. For objects away from the focal plane, such displays create a vergence-accommodation conflict (VAC), potentially degrading user interaction performance. In this paper, we study how the VAC affects pointing at targets within arm's reach with virtual hand and raycasting interaction in current stereo display systems. We use a previously proposed experimental methodology that extends the ISO 9241–411:2015 multi-directional selection task to enable fair comparisons between selecting targets in different display conditions. We conducted a user study with eighteen participants and the results indicate that participants were faster and had higher throughput in the constant VAC condition with the virtual hand. We hope that our results enable designers to choose more efficient interaction methods in virtual environments.
Prolactin-Releasing Effect of a Novel Anti-Dopaminergic Drug, Domperidone, in the Rat (1980)

The prolactin (PRL)-releasing effect of domperidone (DOM), a blocker of dopamine receptors which does not cross the blood-brain barrier, was studied in unanesthetized male rats and compared to that of the classic neuroleptic agent haloperidol (HAL). DOM proved to be a potent PRL releaser since striking and long-lasting (120 min) rises in plasma PRL were elicited by 50 and 100 μ g/kg of the compound. Comparison with HAL showed that DOM was 5 times as potent as HAL as a PRL releaser (ED250 = 0.084 vs. 0.42 mg/kg, respectively). Apomorphine (APO) fully counteracted the PRL-releasing effect of DOM (0.1 mg/kg i.p.) only at the dose of 3 mg/kg s.c, while the PRL-releasing effect of HAL (0.1 mg/kg i.p.) was blocked by APO at the dose of 1 mg/kg s.c. The effect of DOM (0.1 mg/ kg i.p.) on PRL release was also suppressed by another DA-agonist drug, bromocriptine (5 mg/kg s.c). Evaluation of the affinity of DOM and HAL on [3H]-spiperone binding to striatal and pituitary homogenates showed a slightly higher affinity for DOM than HAL on both tissue. Systemic administration of DOM (50 and 100 μ g/kg i.p.) left homo-vanillic acid (HVA) concentrations unchanged in the caudate nucleus while, as expected, HAL (0.5 and 1.0 mg/kg i.p.) induced a striking rise in striatal HVA content. These results indicate that DOM, by acting at the level of ‘peripheral’ DA receptors, is a strong PRL-releasing agent.
VOTOR (2016)

This paper seeks to address the need for fair elections in an adversarial online setting in ad hoc elections. A major issue with existing online solutions is reliance on authorities, which in practice are often instantiated by only one organisation. We propose a conceptually simple but highly robust approach for casting ballots over commodity anonymisers under minimal assumptions. While other schemes have followed a similar approach none have utilised the primitives to achieve so many desirable properties.
Figure S3 from HIF2α-Targeted RNAi Therapeutic Inhibits Clear Cell Renal Cell Carcinoma (2023)

&lt;p&gt;Integrin IHC&lt;/p&gt;
A Novel Cooling Enhancement in Microelectronic Devices and Systems Using Oscillatory Impinging Air Jets (2001)

Abstract A new cooling technique is proposed to simultaneously enhance the heat transfer and significantly reduce the prohibitive high temperatures usually reached by high-powered chips embedded in the last generation of packages. A comparison between flow and heat transfer characteristics for several types of microelectronic cooling arrangements was conducted using a numerical investigation. The maximum temperature and local heat transfer coefficient were determined on a single heated chip cooled by a channel flow, a steady impinging jet, and an oscillatory impinging jet at a Reynolds number of 600. A uniform inlet velocity was used for the channel flow calculation, and the upper and lower channel walls confined the jets. The calculation domain for the three simulations was identical; the steady jet configuration had an inlet jet width twice that of the unsteady jet. The results indicate that the unsteady nature of the confined impinging jet greatly enhances the removal of heat transfer and reduces the high temperatures on the heated chip. The jet core becomes distorted and buckles beyond a critical Reynolds number of 600, which leads to a sweeping motion of its tip (stagnation point). As a result of the combined buckling/sweeping jet motion, the cooled area is significantly enhanced. A comparison between the unsteady impinging jet and the stationary impinging jet reveals that the heat transfer enhancement provided by the unsteady jet is at least two times better. A 25% cooling enhancement is observed when compared with the channel flow technique, yet the jet uses a flow rate 6.3 times lower, therefore a smaller pumping power. The new cooling method does not require the incorporation of costly heat sinks and heat spreaders, or the unnecessary increase of pumping power/blower work, yet provides effective cooling at significantly reduced manufacturing/operating costs.
When Is Spiral Straight? (2011)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text D. Piao, A. Zhang, G. Yao, G. Xu, C. Daluwatte, C.F. Bunting, Y. Jiang, and B.W. Pogue, "When Is Spiral Straight?," Optics & Photonics News 22(12), 24-24 (2011) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Direct β-Selective Hydrocarboxylation of Styrenes with CO2 Enabled by Continuous Flow Photoredox Catalysis (2017)

The direct β-selective hydrocarboxylation of styrenes under atmospheric pressure of CO<sub>2</sub> has been developed using photoredox catalysis in continuous flow. The scope of this methodology was demonstrated with a range of functionalized terminal styrenes, as well as α-substituted and β-substituted styrenes.
Stereo Matching and Viewpoint Synthesis 3D-HDTV chipset (2012)

info:eu-repo/semantics/published
Influence of stimulated Raman scattering on the channel power balance in bidirectional WDM transmission (2003)

The influence of stimulated Raman scattering on the channel power balance in bidirectional wavelength-division multiplexing (WDM) transmission has been analyzed experimentally and numerically. Output power levels with 8 channels/direction launched at +10 dBm/ch. differ more than 0.7 dB from linear loss.
ARkanoidAR: An Augmented Reality System to Guide Biomechanical Movements at Sagittal Plane (2017)

In motor rehabilitation, the search for better methodologies is intense. In parallel, natural interaction technologies are considered to be a nice approach for rehabilitation guidance, as they can provide content for visual feedback in augmented reality. This paper describes an augmented reality physiotherapy rehabilitation system called ARkanoidAR, which was implemented using the Microsoft Kinect and whose main focus is to provide feedback for biomechanical movements, more specifically those which occurs on the sagittal plane. The main objective of this paper is to propose the ARkanoidAR and evaluate its usability in the rehabilitation context. We conceived and applied a usability quiz, and its results obtained shows that the application is efficient in guiding and engaging users to do motor rehabilitation exercises and that it is easy to be set up and handled.
Direct investigation of microparticle self-assembly to improve the robustness of neck formation in thermal underfills (2017)

A high thermal conductivity of the underfill material is key for efficient heat removal from 3D chip stacks. Recently, the excellent thermal properties of underfills in which nanoparticle self-assembly formed necks between the filler particles were demonstrated. To industrially apply neck-based thermal underfills, the robustness of neck formation must be improved. Accordingly, it is crucial to understand the mechanisms of suspension drying in confined spaces. In this work, we present a study of particle self-assembly during colloidal suspension evaporation. The processes were directly observed by fluorescence imaging. In contrast to earlier work, particle self-assembly was studied not only within a model pillar array, but also inside a more representative filler-particle bed. First, microparticle assembly was investigated in porous cavities containing silicon micropillar arrays with different inter-pillar spacings. The 1-μm polystyrene particles used assembled by capillary bridging between the pillars. Pinning of the evaporation front at the outermost pillar row and particle transport to the cavity edges occurred. Accordingly, a large gradient in particle deposition was observed. The pinning could be mitigated by high evaporation temperatures, which led to fast propagation of the drying front. This resulted in directional bridging and a more uniform particle deposition. Moreover, a defect-free particle assembly on the millimeter scale was achieved by guiding the front with spiral pillar arrangements. Second, neck formation was studied in cavities filled with 250-μm filler spheres. In these particle beds, two evaporation stages were observed: vapor invasion along the larger pores and subsequent drying of the capillary bridges linking the filler particles. Homogeneous neck formation was obtained by evaporating a 1 wt% polystyrene suspension at 30 °C. Higher temperatures and concentrations both resulted in enhanced particle deposition at the cavity edges.
Low‐oxidation‐potential conducting polymers derived from 3,4‐ethylenedioxythiophene and dialkoxybenzenes (2001)

Abstract Monomers derived from 3,4‐ethylenedioxythiophene and phenylenes with branched or oligomeric ether dialkoxy substituents were prepared with the Negishi coupling technique. Electrooxidative polymerization led to the corresponding dialkoxy‐substituted 3,4‐ethylenedioxythiophene–phenylene polymers, with extremely low oxidation potentials ( E 1/2,p = −0.16 to −0.50 V vs Ag/Ag + ) due to the highly electron‐rich nature of these materials. The polymers were electrochromic, reversibly switching from red to blue upon oxidation, with bandgaps at about 2 eV. The electrochemical behavior of the oligomeric ether‐substituted polymer was investigated in the presence of different metal ions. Films of the polymer exhibited electrochemical recognition for several alkali and alkaline‐earth cations with selectivity in the order Li + &gt; Ba 2+ &gt; Na + &gt; Mg 2+ . Cyclic voltammetry showed a decrease in the oxidation potential and an improvement in the definition of the voltammetric response, as well as an increase in the overall electroactivity of the polymer films when the concentration of the cations in the medium was increased. These results are discussed in terms of the electrostatic interactions between the complexed cation and the redox center, as well as the diffusion of the ionic species into the polymer matrix. © 2001 John Wiley &amp; Sons, Inc. J Polym Sci Part A: Polym Chem 39: 2164–2178, 2001
Writing optical waveguides in fused silica using 1 kHz femtosecond infrared pulses (2003)

We have investigated the writing of waveguides in bulk pure fused silica glass with femtosecond Ti:Sapphire laser at 1 kHz repetition rate. The photoinduced tracks were characterized in terms of writing geometry (parallel and perpendicular), pulse duration (45 fs, 140 fs, and 200 fs), pulse energy (1–10 μJ), and translation speed (5–150 μm/s) of the sample. Under specific writing conditions, uniform buried waveguides with circular cross section, core diameter of 3–4 μm, and refractive-index change as large as 5×10−3 between core and cladding were achieved.
Annular laser trap: a tool for high-throughput sperm sorting and analysis (2007)

A continuous, size-tunable 3-D annular laser trap based on axicons provides a way to sort sperm base on motility and chemotaxis, and study the effects of laser radiation, optical force and obstacles on sperm motility.