gebhart/patrepeval huggingface dataset:
Selective synthesis of conformationally restricted mono-cyclopentadienyl titanium(iv) complexes of p-tBu-calix[6]arene (2003)

Reaction of p-'Bu-calix[6]arene with potassium metal in methanol followed by [TiCp2Cl2] affords novel mononuclear and binuclear monocyclopentadienyl titanium(IV) complexes, both having the same inverted double cone conformation with a Cp in one of the cavities, in both complexes.
Investigations of α‐Siloxy—Epoxide Ring Expansions Forming 1‐Azaspirocyclic Ketones. (2004)

Abstract For Abstract see ChemInform Abstract in Full Text.
TaffiX® nasal powder spray forms an effective barrier against infectious new variants of SARS-CoV-2 (Alpha, Beta and Delta) (2021)

Abstract While vaccination efforts against SARS-CoV-2 around the world are ongoing, new highly infectious virus variants continue to evolve. The protection provided by the available vaccines against some of the new variants is weaker. Additional preventive measures will therefore be needed to protect the population until effective vaccinations are widely available. TaffiX ® is an anti-viral nasal powder spray comprised of low-pH hypromellose, which forms a protective mechanical barrier that prevents viruses from engaging with nasal cells. The current study aimed to test the protective effect of Taffix against Alpha (B.1.1.7; hCoV-19/Israel/CVL-46879-ngs/2020), Beta, (B.1.351; hCoV-19/Israel/CVL-2557-ngs/2020) and Delta (B.1.617.2; hCoV-19/Israel/VVL-12806/2021), three highly infectious and pathogenic SARS-CoV-2 strains. A nylon filter was treated with Taffix® gel, after which SARS-CoV-2 Alpha, Beta or Delta was seeded. After a 10-min incubation, the downstream side of each filter was washed, and the rinse was collected and placed over Vero-E6 cells. After 5 days of incubation, viral RNA was extracted and subjected to SARS-CoV-2 RT-PCR analysis. Taffix ® fully blocked passage of all three tested SARS-CoV-2 variants, as demonstrated by a 100% reduction of recoverable viral RNA from Vero-E6 cells treated with filter rinse. These results support its use as an effective barrier against new variants of SARS-CoV-2 in conjunction with other protective measures.
Determination of energy barrier profiles for high-k dielectric materials utilizing bias-dependent internal photoemission (2004)

We utilize bias-dependent internal photoemission spectroscopy to determine the metal∕dielectric∕silicon energy barrier profiles for Au∕HfO2∕Si and Au∕Al2O3∕Si structures. The results indicate that the applied voltage plays a large role in determining the effective barrier height and we attribute much of the variation in this case to image potential barrier lowering in measurements of single layers. By measuring current at both positive and negative voltages, we are able to measure the band offsets from Si and also to determine the flatband voltage and the barrier asymmetry at 0V. Our SiO2 calibration sample yielded a conduction band offset value of 3.03±0.1eV. Measurements on HfO2 give a conduction band offset value of 2.7±0.2eV (at 1.0V) and Al2O3 gives an offset of 3.3±0.1 (at 1.0V). We believe that interfacial SiO2 layers may dominate the electron transport from silicon for these films. The Au∕HfO2 barrier height was found to be 3.6±0.1eV while the Au∕Al2O3 barrier is 3.5±0.1eV.
Modelling the effects of walking speed on appearance-based gait recognition (2004)

Researchers in the gait community propose various features, either appearance or model based, which they believe encode certain individual traits. One of the main assumptions made in many gait recognition techniques is constant walking-speed. Even though the gait patterns are repeatable, changes in walking speed can influence the gait patterns themselves. In this work we explore how changes in walking speed affect gait parameters in terms of recognition performance. A speed-varying walking database was collected to allow us to investigate and quantify the impact of speed on gait recognition methodically. We develop a normalization procedure, which maps gait features across speeds, and demonstrate their utility in previously proposed appearance-based gait recognition methods.
Membrane catalytic systems for C2-C4 alkane conversion (2012)

Catalytic processes for the nonoxidative and oxidative dehydrogenation of C2-C4 alkanes, including systems with traditional catalysts and processes conducted with the use of membrane catalysis, are considered in this review. Among the latter, systems with oxidative alkane dehydrogenation have a significant advantage. Both porous membranes and solid electrolytes with oxygen ion permeability can be used in reactors.
Mobility degradation in high-k transistors: the role of the charge scattering (2004)

In this paper, we propose a model to calculate the mobility degradation due to remote Coulomb scattering. The model is able to predict the effects of an arbitrary charge distribution in the gate dielectric. We model the mobility degradation for HfO/sub 2/ transistors. An exponential charge distribution results in the best agreement. We observe also that the inversion charge is able to screen the effect of the remote charge, thus increasing the mobility while decreasing the EOT.
Evaluation and application of the Purge Analyzer Tool (PAT) to determine in-well flow and purge criteria for sampling monitoring wells at the Stringfellow Superfund site in Jurupa Valley, California, in 2017 (2021)

First posted March 25, 2021 For additional information, contact: Director, New England Water Science CenterU.S. Geological Survey10 Bearfoot RoadNorthborough, MA 01532 The U.S. Geological Survey and U.S. Environmental Protection Agency are developing analytical tools to assess the representativeness of groundwater samples from fractured-rock aquifers. As part of this effort, monitoring wells from the Stringfellow Superfund site in Jurupa Valley in Riverside County, California, approximately 50 miles east of Los Angeles, were field tested to collect information to assist in the evaluation and application of in-well flow as computed by the analytical model called the Purge Analyzer Tool, which computes in-well groundwater travel times for simple piston transport of inflowing groundwater from open intervals of a monitoring well to the pump intake and can provide insight into optimal purging parameters (duration, rate, and pump position) needed for the collection of representative groundwater samples. Field testing of wells included hydraulic, chemistry, and dye tracer analysis to investigate travel times in wells under pumping conditions. The Purge Analyzer Tool was able to replicate dye velocities (travel times) for one of three wells that had appreciable inflow from the aquifer but not the other two wells, which are screened in low-permeability sediments and rock, where flow was dominated by borehole storage. A set of criteria was established to help assess the ability to collect representative groundwater chemistry from monitoring wells; criteria included understanding the height of the static well water column and relative exchange rate between the aquifer and the well.
Peptide Arrays for Kinase Profiling (2005)

Hundreds and thousands of simultaneous kinase assays are possible by using peptide arrays. In this minireview, we summarize production principles, library types, and assay strategies used for kinase profiling on peptide arrays. The second part gives a comprehensive review of the various peptide microarray applications in kinase research.
Insights Into the Structure-Function Relationships of Dimeric C3d Fragments (2021)

Cleavage of C3 to C3a and C3b plays a central role in the generation of complement-mediated defences. Although the thioester-mediated surface deposition of C3b has been well-studied, fluid phase dimers of C3 fragments remain largely unexplored. Here we show C3 cleavage results in the spontaneous formation of C3b dimers and present the first X-ray crystal structure of a disulphide-linked human C3d dimer. Binding studies reveal these dimers are capable of crosslinking complement receptor 2 and preliminary cell-based analyses suggest they could modulate B cell activation to influence tolerogenic pathways. Altogether, insights into the physiologically-relevant functions of C3d(g) dimers gained from our findings will pave the way to enhancing our understanding surrounding the importance of complement in the fluid phase and could inform the design of novel therapies for immune system disorders in the future.
CCDC 639630: Experimental Crystal Structure Determination (2008)

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Optical Frequency Comb Spectroscopy at 3.3 and 5.2 µm by a Tm:fiber-Laser-Pumped Optical Parametric Oscillator (2016)

Using a doubly-resonant femtosecond optical parametric oscillator in combination with a multipass cell and a Fourier transform spectrometer we measure broadband CH4 and NO absorption spectra at fundamental transition wavelengths.
Characterisation of cut and chip behaviour for NR, SBR and BR compounds with an instrumented laboratory device (2018)

Understanding the cut and chip (CC) effect in rubber is important for successful product development for tires used in off-road or poor road conditions and for other demanding applications of rubber. This research describes a laboratory testing method for characterising the CC fracture behaviour of rubber using a device that controls and records multiple applied loads and displacements during cyclic impact to the surface of a solid rubber specimen to mimic and quantify the CC damage experienced by tire tread compounds. To study the capabilities of the instrument, three model compounds were studied that are based on carbon black reinforced compounds of common elastomers used in tire treads: natural rubber (NR), styrene-butadiene rubber (SBR), and butadiene rubber (BR). These polymers have well-established CC tendencies in field performance of tire treads, with NR exhibiting the best CC resistance followed by SBR and finally BR. The same trend was found with the rubber impact testing approach that allowed the CC behaviour to be quantified using a new physical parameter which is the CC propensity (P). The relative ranking for CC resistance for the three compounds followed the fatigue crack growth resistances of the materials but was exactly opposite to the ranking of DIN abrasion resistance. This provides evidence that CC damage from impact by mm-scale asperities and abrasion of rubber against μm-scale asperities exhibit distinct characteristics in rubber.
Correction: Corrigendum: Automated single-cell motility analysis on a chip using lensfree microscopy (2014)

The original version of this Article contained a typographical error in the spelling of the author Yunbo Liu which was incorrectly given as Yunbo Lyb.
Stromal Nerve Imaging and Tracking Using Micro-Optical Coherence Tomography (2020)

Owing to its advantageous properties, µOCT may become useful as a noncontact method for assessing nerval structures in humans to screen for early peripheral neuropathy.
Characterization of root surface periodontal ligament following avulsion, severe intrusion or extraction: preliminary observations (2008)

This study employed novel topographic and histological techniques to assess remaining periodontal ligament (PDL) in a convenience sample of avulsed and intruded human permanent incisors and extracted premolars. Seventeen human teeth (eight avulsed, five severely intruded and four uninjured extracted) were evaluated for the distribution and physical characteristics of adherent root surface PDL. The topographic distribution of PDL was assessed by staining roots with malachite green and determining the proportion of remaining PDL within selected regions on four aspects of each tooth. In order to characterize mechanical damage to PDL, serial transverse sections of roots were stained with hematoxylin and eosin and examined at magnifications of 40x to 800x. The sections were photographed and imaging software was used to calculate the percentage of remaining PDL in the circumference of each root section. Topographic analysis demonstrated that 54% of the PDL remained on roots of avulsed and severely intruded incisors and 36% of the PDL remained on the extracted single-rooted premolars. Examination of serial transverse root sections revealed that 58% of the PDL remained on roots of avulsed or severely intruded incisors and 54% on extracted premolars. Avulsed and severely intruded incisors demonstrated similar amounts of retained PDL. In both injuries, almost half of the root surface was denuded of PDL.
The Influence of Symptoms and Device Detected Atrial Tachyarrhythmias on Medical Management: Insights from A‐HIRATE (2007)

Pharmacologic AT therapy is differentially influenced by patient-reported symptoms of AT compared to device-detected asymptomatic AT. Anticoagulation and antiarrhythmic therapies are influenced by device detection of asymptomatic AT, whereas initiation of beta-blockers is more strongly influenced by symptoms.
ChemInform Abstract: 4‐Phenyl‐4‐oxo‐butanoic Acid Derivatives Inhibitors of Kynurenine 3‐Hydroxylase. (1999)

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.
Tangible interactive interface using acoustic time reversal process (2005)

Time reversal in acoustic is a very efficient solution to focus sound back to its source in a wide range of material including reverberating media. It expresses the following physical properties: a wave still have the memory of its source location. The concept presented in this paper consists in detecting the acoustic waves in solid objects generated by a simple human touch. In a second step, the information related to the source location are extracted from a virtual time reversal experiment in the computer. Then, an action (turn on the light or a CD player) is associated to each location. Thus, the whole system transforms solid objects into interactive interfaces. Compared to the existing acoustic techniques, it presents the great advantage to be simple and easily applicable on inhomogeneous objects with any shape. The number of possible touch locations at the surface of objects is shown to be directly related to the mean wavelength of the detected acoustic wave.
<strong>Fat suppression using dynamic paralleltransmission at 7T: application to whole-brain CEST MRI</strong> (2023)

Fat signal can cause strong artifacts in MR images and/or bias measurements such as in Chemical Exchange Saturation Transfer (CEST) where metabolites peaks are reduced. At 7T, the signal-to-noise ratio and the peak separation are increased but the Specific Absorption Rate (SAR) constraints too, limiting the use of fat suppression pulses. Parallel transmit dynamic pulses for fat saturation (using k T -points) and water-selection (using a Spiral Non-Selective trajectory) were implemented for a whole-brain CEST protocol and optimized to reduce SAR compared to the standard circularly-polarized approach. Results showed high improvements in flip angle homogeneity and fat suppression efficiency, with reduced SAR.
Telecentric Scanner For 3-D Sensing (1985)

Triangulation systems that are based on the simultaneous deflection of the illuminating and observing light beam are able to scan large object fields fast and with high space-bandwidth product. On the other hand, in nontelecentric systems, the direction of illumination and observation vary along the scan path, and the shape of an object is usually determined with respect to a circular reference shape. We describe a telecentric system with variable reference shape, stationary measuring geometry over the whole field, and expanded depth of field.
Versatile electronic states in epitaxial thin films of (Sn-Pb-In)Te: From topological crystalline insulator and polar semimetal to superconductor (2021)

Epitaxial thin films of ${({\mathrm{Sn}}_{x}{\mathrm{Pb}}_{1\ensuremath{-}x})}_{1\ensuremath{-}y}{\mathrm{In}}_{y}\mathrm{Te}$ were successfully grown by molecular-beam epitaxy in a broad range of compositions ($0\ensuremath{\le}x\ensuremath{\le}1$, $0\ensuremath{\le}y\ensuremath{\le}0.23$). We investigated electronic phases of the films by the measurements of electrical transport and optical second-harmonic generation. In this system, one can control the inversion of the band gap, the electric polarization that breaks the inversion symmetry, and the Fermi-level position by tuning the Pb/Sn ratio and In composition. A plethora of topological electronic phases is expected to emerge, such as the topological crystalline insulator, the topological semimetal, and superconductivity. For the samples with large Sn compositions $(x&gt;0.5)$, hole density increases with In composition $(y)$, which results in the appearance of superconductivity. On the other hand, for those with small Sn compositions $(x&lt;0.5)$, an increase in In composition reduces the hole density and changes the carrier type from $p$ type to $n$ type. In a narrow region centered at $(x,y)=(0.16,0.07)$ where the $n$-type carriers are slightly doped, charge transport with high mobility exceeding $5000\phantom{\rule{0.16em}{0ex}}\mathrm{c}{\mathrm{m}}^{2}\phantom{\rule{0.16em}{0ex}}{\mathrm{V}}^{\text{--}1}\phantom{\rule{0.16em}{0ex}}{\mathrm{s}}^{\text{--}1}$ shows up, representing the possible semimetal states. In those samples, the optical second-harmonic generation measurement showing the breaking of inversion symmetry along the out-of-plane [111] direction, which is a necessary condition for the emergence of the polar semimetal state. The thin films of ${({\mathrm{Sn}}_{x}{\mathrm{Pb}}_{1\ensuremath{-}x})}_{1\ensuremath{-}y}{\mathrm{In}}_{y}\mathrm{Te}$ material systems with a variety of electronic states would become a promising materials platform for the exploration of novel quantum phenomena.
Photoenhanced Degradation of Sarin at Cu/TiO2 Composite Aerogels: Roles of Bandgap Excitation and Surface Plasmon Excitation (2021)

Multifunctional composites that couple high-capacity adsorbents with catalytic nanoparticles (NPs) offer a promising route toward the degradation of organophosphorus pollutants or chemical warfare agents (CWAs). We couple mesoporous TiO<sub>2</sub> aerogels with plasmonic Cu nanoparticles (Cu/TiO<sub>2</sub>) and characterize the degradation of the organophosphorus CWA sarin under both dark and illuminated conditions. Cu/TiO<sub>2</sub> aerogels combine high dark degradation rates, which are facilitated by hydrolytically active sites at the Cu||TiO<sub>2</sub> interface, with photoenhanced degradation courtesy of semiconducting TiO<sub>2</sub> and the surface plasmon resonance (SPR) of the Cu nanoparticles. The TiO<sub>2</sub> aerogel provides a high surface area for sarin binding (155 m<sup>2</sup> g<sup>-1</sup>), while the addition of Cu NPs increases the abundance of hydrolytically active OH sites. Degradation is accelerated on TiO<sub>2</sub> and Cu/TiO<sub>2</sub> aerogels with O<sub>2</sub>. Under broadband illumination, which excites the TiO<sub>2</sub> bandgap and the Cu SPR, sarin degradation accelerates, and the products are more fully mineralized compared to those of the dark reaction. With O<sub>2</sub> and broadband illumination, oxidation products are observed on the Cu/TiO<sub>2</sub> aerogels as the hydrolysis products subsequently oxidize. In contrast, the photodegradation of sarin on TiO<sub>2</sub> is limited by its slow initial hydrolysis, which limits the subsequent photooxidation. Accelerated hydrolysis occurs on Cu/TiO<sub>2</sub> aerogels under visible illumination (>480 nm) that excites the Cu SPR but not the TiO<sub>2</sub> bandgap, confirming that the Cu SPR excitation contributes to the broadband-driven activity. The high hydrolytic activity of the Cu/TiO<sub>2</sub> aerogels combined with the photoactivity upon TiO<sub>2</sub> bandgap excitation and Cu SPR excitation is a potent combination of hydrolysis and oxidation that enables the substantial chemical degradation of organophorphorus compounds.
Sensor-based knowledge discovery from a large quantity of situational variables (2013)

Foldable lenses represent a major breakthrough in the effort to achieve ever smaller incisions. The plate-haptic or "taco-style" lenses are folded and implanted by a device called an injector. Although customized for each manufacturer's lens, the injectors all have a common design principle: the intraocular lens (IOL) is folded within a funnel-like structure of the tip and is advanced by a plunger that pushes and delivers the lens. To maintain optimal hand stabilization and injector management, both hands are usually required. This does not leave a hand to help with IOL positioning. To improve handling, a simple, mechanized system has been created for a new injector system that allows the delivery of the plate-haptic lens with one hand, in a pen-like fashion.
Blind phase/frequency synchronization with low-precision ADC: A Bayesian approach (2013)

Modern communication receivers heavily leverage Moore's law, which enables low-cost implementations of sophisticated functionalities in digital signal processing (DSP). However, as communication systems scale up in bandwidth, the availability of analog-to-digital converters (ADCs) becomes a fundamental bottleneck for such DSP-centric design. In this paper, we investigate a canonical problem of blind carrier phase and frequency synchronization in order to obtain insight into the performance limitations imposed by severe quantization constraints. We consider an ideal Nyquist sampled QPSK system with coarse phase quantization, implementable with one bit ADCs after analog linear combinations of in-phase (I) and quadrature (Q) components. We propose blind Bayesian algorithms for rapid phase acquisition, followed by continuous feedback-based phase/frequency tracking, based on jointly modeling the unknown phase and frequency, the unknown data, and the severe nonlinearity introduced due to coarse phase quantization. Our performance evaluation shows that excellent performance, close to that of an unquantized system, is achieved by the use of 12 phase bins (implementable using 6 one-bit ADCs).
Dry-Contact Electrode Ear-EEG (2018)

The prototyped dry-contact ear-EEG platform represents an important technological advancement of the method in terms of user-friendliness, because it eliminates the need for gel in the electrode-skin interface.
New Nonflammable Perfluoropolyether-Based Electrolytes for Rechargeable Lithium-Ion Batteries (2013)

Abstract not Available.