gebhart/patrepeval huggingface dataset:
Preparation of Chemical Gradient Surfaces by Hyperthermal Polyatomic Ion Deposition:  A New Method for Combinatorial Materials Science (2001)

C3F5+ ion deposition at 50 eV is used to produce chemical gradient surfaces on poly(methyl methacrylate) (PMMA) by systematic variation of the fluence across the surface. The gradient is characterized by recording small spot X-ray photoelectron spectra and air/water contact angles along the sample length. The fluorine content grows with ion fluence toward the modified end of the sample while the oxygen content decreases simultaneously. These two effects are attributed to the formation of a fluorocarbon film on top of the PMMA surface, which increases in coverage with C3F5+ ion fluence. The air/water contact angle increases in parallel with the fluorine content along the surface gradient. These results clearly indicate that a chemical and wettability gradient is produced on PMMA by mass-selected hyperthermal ion deposition. C3F5+ ion deposition can also be used to produce chemical gradient surfaces on polystyrene, aluminum, and silicon substrates. It is shown that hyperthermal polyatomic ion deposition is a general method for a wide range of surface chemical gradients on various substrates including polymers, metals, semiconductors, and ceramics.
Design of antenna array for the L-band phased array feed for FAST (2013)

The Five-hundred-meter Aperture Spherical radio Telescope (FAST), which is currently under construction, is proposed to be equipped with phased array feed (PAF) to improve survey speed and compensate for the feed cabin vibration, and a study is underway for this. In this paper, the L-band FAST PAF plan is introduced,and the design of antenna array element is presented in detail. The measured results of the fabricated element validate the element design.
Thermal Cracking of Oil under Water Pressure up to 900 bar at High Thermal Maturities. 1. Gas Compositions and Carbon Isotopes (2016)

In this study, a C9+ fraction of saturate-rich Tertiary source rock-derived oil from the South China Sea basin was pyrolyzed in normal and supercritical water using a 25 mL vessel at a range of temperature from 350 to 425 °C for 24 h, to probe pressure effects up to 900 bar on gas yields and their stable carbon isotopic compositions during thermal cracking. Pressure generally retards oil cracking, as evidenced by reduced gas yields, but the trends depend upon the level of thermal evolution. In the early stages of cracking (350 and 373 °C, equivalent vitrinite reflectance of < ∼1.1% R0), the suppression effect increases with pressure from 200 to 900 bar, but it is most marked between 200 and 470 bar. At the later stages in the wet gas window (390, 405, and 425 °C, equivalent vitrinite reflectance of >1.3% R0), pressure still has a strong suppression effect from 200 to 470 bar, which then levels off or is reversed as the pressure is increased further to 750 and 900 bar. Interestingly, the stable carbon isotopic composition of the generated methane becomes enriched in 13C as the pressure increases from 200 to 900 bar. A maximum fractionation effect of ∼3‰ is observed over this pressure range. Due to pressure retardation, the isotopically heaviest methane signature does not coincide with the maximum gas yield, contrary to what might be expected. In contrast, pressure has little effect on ethane, propane, and butane carbon isotope ratios, which show a maximum variation of ∼1‰. The results suggest that the rates of methane-forming reactions affected by pressure control methane carbon isotope fractionation. Based on distinctive carbon isotope patterns of methane and wet gases from pressurized oil cracking, a conceptual model using “natural gas plot” is constructed to identify pressure effect on in situ oil cracking providing other factors excluded. The transition in going from dry conditions to normal and supercritical water does not have a significant effect on oil-cracking reactions as evidenced by gold bag hydrous and anhydrous pyrolysis results at the same temperatures as used in the pressure vessel.
Design of lightweight multilayer partitions based on sonic crystals (2001)

The sound transmission coefficient of different multilayer partitions commonly encountered in buildings has been measured as a function of frequency. Most of the samples studied showed an increase in the sound transmission coefficient over a specific frequency, called the critical frequency, depending on the layer material. However, for partitions built with the same materials, but built with a periodic arrangement of layers, this behavior has not been observed. This kind of periodic multilayer partition can be considered as a sonic crystal, because the stopband corresponding to a one-dimensional sonic crystal with a constant lattice equal to the modulation of the partition is in the same range as the critical frequency of the panel.
Synthesis and Electrochemical Properties of Monoclinic LiMnBO[sub 3] as a Li Intercalation Material (2011)

We investigated the structural stability and electrochemical properties of LiMnBO 3 in the hexagonal and monoclinic form with ab initio computations and, for the first time, report electrochemical data on monoclinic LiMnBO 3 . In contrast to the negligible Li-storage capacity in the hexagonal LiMnBO 3 , a second cycle discharge capacity of 100 mAh/g was achieved in the monoclinic LiMnBO 3 , with good capacity retention over multiple cycles. Elevated temperature cycling indicates that the capacity of monoclinic LiMnBO 3 is kinetically limited, and further improvement may be expected by addressing the Li ion and/or electron transport limitations.
Oxidative cross‐linking of plasma membrane arabinogalactan proteins (1997)

Monoclonal antibodies which recognize carbohydrate in arabinogalactan proteins (AGPs) have revealed that certain carbohydrate epitopes at the outer plasma membrane surface are developmentally regulated. Some epitopes are expressed according to cell position, and AGPs are thought to play a role in cell-cell interaction during development. This study demonstrates that sugar beet plasma membranes contain two subfamilies of AGPs, with apparent molecular masses of 82 and 97 kDa, and that each subfamily consists of a small number of acidic AGP isoforms. Excision of leaves generates three additional AGP complexes with apparent molecular masses of 120, 170 and 210 kDa, with the 170 kDa complex being the major form induced by excision. The addition of millimolar concentrations of H2O2 to a partially purified fraction of the 82 and 97 kDa AGPs also generates AGP complexes, with the 170 kDa complex as the major form. These results indicate that the plasma membrane AGPs are a target for endogenous H2O2.
An automated online instrument to quantify aerosol-bound reactive oxygenspecies (ROS) for ambient measurement and health-relevant aerosol studies (2016)

Abstract. The adverse health effects associated with ambient aerosol particles have been well documented, but it is still unclear which aerosol properties are most important for their negative health impact. Some studies suggest the oxidative effects of particle-bound reactive oxygen species (ROS) are potential major contributors to the toxicity of particles. Traditional ROS measurement techniques are labour-intensive, give poor temporal resolution and generally have significant delays between aerosol sampling and ROS analysis. However, many oxidising particle components are reactive and thus potentially short-lived. Thus, a technique to quantify particle-bound ROS online would be beneficial to quantify also the short-lived ROS components. We introduce a new portable instrument to allow online, continuous measurement of particle-bound ROS using a chemical assay of 2′7′-dichlorofluorescein (DCFH) with horseradish peroxidase (HRP), via fluorescence spectroscopy. All components of the new instrument are attached to a containing shell, resulting in a compact system capable of automated continuous field deployment over many hours or days. From laboratory measurements, the instrument was found to have a detection limit of ∼ 4 nmol [H2O2] equivalents per cubic metre (m3) air, a dynamic range up to at least ∼ 2000 nmol [H2O2] equivalents per m3 air and a time resolution of ≤ 12 min. The instrument allows for ∼ 16 h automated measurement if unattended and shows a fast response to changes in concentrations of laboratory-generated oxidised organic aerosol. The instrument was deployed at an urban site in London, and particulate ROS levels of up to 24 nmol [H2O2] equivalents per m3 air were detected with PM2.5 concentrations up to 28 µg m−3. The new and portable Online Particle-bound ROS Instrument (OPROSI) allows fast-response quantification; this is important due to the potentially short-lived nature of particle-bound ROS as well as fast-changing atmospheric conditions, especially in urban environments. The instrument design allows for automated operation and extended field operation with twice-daily presence of an operator. As well as having sensitivity suitable for ambient level measurement, the instrument is also suitable at concentrations such as those required for laboratory and chamber toxicological studies.
Mitigating the effects of residual biases with Schmidt-Kalman filtering (2005)

Fusion of data from multiple sensors can be hindered by systematic errors known as biases, which generally include both deterministic and stochastic components. The deterministic errors can be estimated and then used to debias the sensor measurements prior to fusion. However, the remaining stochastic part typically referred to as a "residual" bias, can still severely degrade tracking performance. Specifically, residual biases can lead to degradation in covariance consistency, data mis-association, and spurious/redundant tracks, if left unaddressed. This paper presents an algorithm based on the Schmidt-Kalman filter for mitigating the effects of residual biases on sensor attitude and measurement generation. The algorithm incorporates the residual bias covariance into the track state update and "shapes" the state covariance. We also introduce a Schmidt-IMM filter implementation to address the problem of maneuvering targets. Simulation studies are presented to demonstrate the effectiveness of the Schmidt-Kalman and the Schmidt-IMM filters in the presence of residual biases. Significant improvements are shown for data association, covariance consistency, and position/velocity accuracy.
La estética de Ortega (1973)

En este número no se incluyeron resúmenes ni palabras clave.
3-D depth migration: Various methods andhow they perform on real data (1997)

3-D depth migration is one of the most active areas of research and development and it has been approached from different angles. An accurate algorithm which work" in the space-frequency domain was introduced by Blacquiere et al. (1989). Unfortunately, it is computationally very expensive and not suitable for solving real-life 3-D migration problems. This led to the development of an alternative scheme (Hale, 1990) which sacrifices some accuracy but is much more efficient. It is commonly referred to as the Hale-McClellan method. An alternative procedure known as reverse-time migration works in the space-time domain. It ;05 based on the full wave equation and yields by far the most accurate results, but it requires extremely large computer resources. However, a series of new developments (Mufti et al., 1996) have made this algorithm a very practical tool even for migrating large exploration-scale 3-D real data. We shall provide a comparative evaluation of the results obtained by this method with the corresponding resultsfrom Hale's algorithm. This will include a detailed investigation of the impulse response as well as migration of both synthetic and real poststack 3-D seismic data. We will not present any results based on prestack migration, but we will discuss a number of serious problems with the current technology developed for prestack migration as well as some food for thought.
A remote Chinese chess game using mobile phone augmented reality (2008)

In this paper, we use Augmented Reality (AR) technology to implement a client-server Chinese chess game on mobile phones. Without a real chess board, users can play Chinese chess or learn "kifu" on the server. Kifu, recording every step in playing Chinese chess, is very helpful for players to learn and analyze the strategies for playing Chinese chess. Moreover, users can "directly" pick up a chess piece and move it through his mobile phone. This approach gives users the most natural human-computer interface.
Abstract W P254: Docosahexaenoic Acid Therapy of Experimental Hemorrhagic Stroke (2015)

INTRODUCTION: Recently we have shown that novel therapy with docosahexaenoic acid (DHA) and DHA complexed to albumin (DHA-Alb) is neuroprotective after ischemic stroke in rats. The purpose of this study was to determine whether treatment with DHA and DHA-Alb would protect against intracerebral hemorrhagic stroke (ICH). METHODS: The ICH model was produced in male Sprague-Dawley rats by a double-injection method in which 45 μl of fresh arterial blood was injected into the right striatum. The neurological status was evaluated after ICH (at 50 min) and at 1h, 1, 2, 3 and 7 days after treatment; a grading scale of 0-12 was employed (normal score=0, maximal deficit=12). Six groups we studied: DHA (5 mg/kg), Alb (0.63 or 1.25 g/kg), DHA-Alb (5 mg/kg+0.63 g/kg or 5 mg/kg+1.25 g/kg) or saline were administered i.v. at 60 min after ICH (n=10-12 per group). Ex vivo imaging of the brains was conducted on 11.7T MRI on day 7. High-resolution T2 weighted images (T2WI) and apparent diffusion coefficient maps were generated. After completion of the MRI study, histopathology and immunochemistry were conducted and hematoma volumes were determined. RESULTS: The physiological variables were entirely comparable among the six groups. Treatment with DHA significantly improved behavior on days 1, 2, 3 and 7 (by 25-32) and reduced hematoma volume by a mean of 33% compared to saline group. Animals treated with low and moderate doses of DHA-Alb showed an improved neurological score compared to corresponding Alb groups on day 1 (23 and 26%), day 2 (32 and 31%), day 3 (34 and 33%) and day 7 (31 and 36%, respectively). MRI revealed a consistent hematoma involving the striatum and overlying corpus callosum. Moderate doses of DHA-Alb reduced hematoma volumes compared to Alb group (by 42%). Low dose of DHA-Alb also reduced hematoma volumes, but it was not statistically different from Alb group. Lesion volumes computed from T2WI images and by histopathology agreed closely with one another and were highly correlated. CONCLUSION: We concluded that both, DHA and DHA-Alb therapy provides neurobehavioral recovery and reduces hematoma volume when administered at 1h after ICH in rats.
Electrochromic switchable mirror glass with controllable reflectance (2012)

An electrochromic switchable mirror glass with controllable reflectance was developed. The conditions for fabricating InGaZnO4 (IGZO) thin film, which serves as a transparent conductor, were investigated. The mirror glass with IGZO thin film exhibited multiple colors arising from interference between multilayers. The mirror glass with IGZO thin film fabricated at a working pressure of 0.4 Pa showed high transmittance (63%) in the transparent state and low reflectance (16%) in the reflective state at a wavelength of 670 nm. Moreover, the developed mirror glass had low glare in the reflective state because the reflection of direct, bright light was reduced.
Digitizing fashion (2015)

column Share on Digitizing fashion: software for wearable devices Author: Oskar Juhlin Stockholm University Stockholm UniversityView Profile Authors Info & Claims InteractionsVolume 22Issue 3May - June 2015 pp 44–47https://doi.org/10.1145/2754868Published:27 April 2015Publication History 19citation2,091DownloadsMetricsTotal Citations19Total Downloads2,091Last 12 Months292Last 6 weeks39 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my Alerts New Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
Concentrations in plasma, epithelial lining fluid, alveolar macrophages and bronchial mucosa after a single intravenous dose of 1.6 mg/kg of iclaprim (AR-100) in healthy men (2007)

Iclaprim concentrations in ELF and AM exceeded the MIC(90) for penicillin-susceptible Streptococcus pneumoniae (MIC90 0.06 mg/L), penicillin-intermediate S. pneumoniae (MIC90 2 mg/L), penicillin-resistant S. pneumoniae (MIC90 4 mg/L) for 7, 7 and 4 h, respectively, and Chlamydia pneumoniae (MIC90 0.5 mg/L) for 7 h. Mean iclaprim concentrations in ELF exceeded the MIC90 for Haemophilus influenzae (MIC90 4 mg/L) and Moraxella catarrhalis (MIC90 8 mg/L) for up to 4 and 2 h, respectively; in AM the MIC90 was exceeded for up to 7 h. Furthermore, the MIC90 for methicillin-resistant Staphylococcus aureus of 0.12 mg/L was exceeded at all sites for up to 7 h. These data suggest that iclaprim reaches lung concentrations that should be effective in the treatment of community-acquired pneumonia.
<i>In vitro</i>effects of the polyamine biosynthesis inhibitor, α-difluoromethylornithine, on ornithine decarboxylase activities from three plant pathogenic fungi (1992)

The effects of α-difluoromethylornithine (DFMO) on in vitro ornithine decarboxylase (ODC) activities from three plant pathogenic fungi, Pyrenophora avenae, Pyricularia oryzae and Uromyces viciae-fabae, were studied. DFMO concentrations from 0·01 to 1·0 mmol/l produced no significant effects on ODC activities from the three fungi. However, increasing the DFMO concentration to 5 mmol/l produced a substantial reduction in in vitro ODC activity from Pyre, avenae. The ODC inhibitor, α-monofluoromethylornithine (2 mmol/l), significantly reduced in vitro ODC activity from Pyre. avenae, whereas RR-methyl acetylenic putrescine, an ODC inhibitor based on putrescine, produced no significant effect on the fungal enzyme.
Summary of Clinical Trials with Zafirlukast (1998)

Zafirlukast is an orally active and selective cysteinyl leukotriene (cysLT) receptor antagonist. In humans, zafirlukast antagonized the effects of exogenously administered LTD4 and cysLTs released endogenously in response to physical and chemical stimuli. Zafirlukast antagonized LTD4-induced bronchoconstriction, with effects still evident 12 h after drug administration. In clinical models of asthma, zafirlukast inhibited bronchospasm after allergen or exercise challenge in patients with asthma. In multicenter trials in patients with chronic, stable asthma, zafirlukast reduced asthma symptoms, decreased as-needed beta-agonist use, and improved pulmonary function without increasing the number of adverse events. Zafirlukast also exhibited evidence of an anti-inflammatory effect in the lung in preliminary studies involving segmental antigen challenge. The results from these clinical trials demonstrate that zafirlukast is effective and safe for the prophylactic treatment of asthma. Calhoun WJ. Summary of clinical trials with zafirlukast.
Diffusion in porous systems and the influence of pore morphology in pulsed gradient spin-echo nuclear magnetic resonance studies (1992)

We report a combined experimental, theoretical, and simulation study of pulsed gradient spin-echo (PGSE) nuclear magnetic resonance (NMR) for fluid saturated porous media. A simple pore hopping theory is developed on the basis of the assumption that diffusion within pores is very much faster than diffusion between pores. For suitable periodic media, the theoretical results are found to be in good agreement with random-walk simulations. The theory for glasslike media is then used to analyze experimental PGSE NMR data for a water-saturated random loose pack of nearly monodisperse polystyrene spheres. The structural parameters extracted by this method are consistent with the known geometry of such packings. An important observation from the simulations is that the long-time effective diffusion constant is already accessed at times so short that a single spin will only have diffused across one pore width.
Infrared spectra of compounds with the methoxymethyl protecting group (1986)

Infrared spectra of a series of compounds containing the CH 3 OCH 2 O- (MOM-O-) group have been studied. All the spectra exhibit three characteristic strong absorption bands due to coupled stretching vibrations of C-O-C-O-C grouping in the region 1 200 - 1 000 cm -1 .
Identification and characterization of new murine T cell receptor beta chain variable region (V beta) genes. (1989)

By screening previously isolated genomic clones spanning the mouse TCR V beta locus with V beta-specific oligonucleotides, we have isolated one new functional V beta gene and six V beta pseudogenes. Because this method of identifying new genes does not depend on expression levels, we conclude that most, if not all, V beta genes in the mouse have been identified. The newly identified pseudogenes increase the frequency of mouse TCR V beta pseudogenes to 28%, a frequency similar to that estimated for mouse Ig VH pseudogenes (24). Three of the newly discovered pseudogenes are clustered in a region around another pseudogene (V beta 17b). The extensive DNA diversity, as reflected in both the nucleotide sequence and the RFLP, indicates that this genomic region is a possible hotspot of recombination. The new functional gene, V beta 19a, is expressed at very low levels, which explains why it has not been isolated earlier. V beta 19 shows expression patterns that correlate with the previously described Va beta and Vb beta haplotypes.
Thermal shock resistance of ZnS wave-transparent ceramic considering the effects of constraint and pneumatic pressure (2014)

In order to study the combined effect of aerodynamic heating, pneumatic pressure and external constraint on the thermal shock resistance (TSR) of ZnS wave-transparent ceramic in its actual service process, the theoretical model is established by introducing the analytical solution of transient heat conduction problem of ZnS plate under aerodynamic heating into its thermal stress field model. The numerical simulation is also conducted not only to examine the theoretical model, but also to study how to improve the TSR. The influences of constraint and pneumatic pressure are studied and the effects of loosing constraint and active cooling are focused on. The study shows that the critical rupture temperature difference of simply supported ZnS plate will form wave peak; the TSR of ZnS plate is obviously optimized when loosing constraint method has been adopted, and the effect of pneumatic pressure on TSR is closely related to the change of failure region; active cooling is an effective way to improve the TSR of ZnS plate and the stronger pneumatic pressure, the better TSR, but active cooling can’t be too violent.