gebhart/patrepeval huggingface dataset:
Comment on "Identification of a superoxide in superconductingLa2CuO4+δby x-ray photoelectron spectroscopy" (1989)

"Tetragonal," superconductive ${\mathrm{La}}_{2}\mathrm{Cu}{\mathrm{O}}_{4+\ensuremath{\delta}}$ has been synthesized at 800\ifmmode^\circ\else\textdegree\fi{}C and 23 kbar under a high oxygen pressure. A first-order phase change to the orthorhombic, antiferromagnetic state occurs with the loss of bulk oxygen; a continuous loss of superficial oxygen occurs through the transition. These data make it unnecessary to postulate the presence of interstitial bulk superoxide and indicate that any superoxide identified by x-ray photoelectron spectroscopy is probably associated with superficial oxygen, not the bulk oxygen responsible for superconductivity.
Skin and bubble formation in films made of methyl nanocellulose, hydrophobically modified ethyl(hydroxyethyl)cellulose and microfibrillated cellulose (2020)

Abstract The use of nanomaterials and polymers from renewable resources is important in the search for sustainable alternatives to plastic-based packaging materials and films. In this work, self-supporting thin films prepared from derivatized and non-derivatized nanocellulose and cellulose derivatives were studied. The effect of drying temperature on the film-forming behavior of compositions comprising hydrophobically modified ethyl(hydroxyethyl)cellulose (EHEC), native microfibrillated cellulose (MFC) and nanocellulose made from methyl cellulose was determined. The interaction between the components was assessed from viscosity measurements made at different temperatures, the result being linked to a thermal-dependent association during liquid evaporation, and the subsequent barrier and film-forming properties. The effect of temperature on suspensions was clearly different between the materials, confirming that there were differences in interaction and association between EHEC–MFC and methyl nanocellulose–MFC compositions. The amphiphilic EHEC affected both the suspension homogeneity and the film properties. Air bubbles were formed under certain conditions and composition particularly in MFC films, dependent on the drying procedure. The presence of air bubbles did not affect the oxygen transmission rate or the oil and grease resistance. An increasing amount of MFC improved the oxygen barrier properties of the films.
ChemInform Abstract: BEOBACHTUNG EINER PI‐SIGMA‐UMLAGERUNG NACH ADDITION VON PROTONEN AN BICYCLO(6,1,0)NONATRIENTRICARBONYLMOLYBDAEN (1973)

Abstract Mit Fluorsulfonsäure‐Sulfurylfluorid erfolgt bei ‐120°C Protonisierung von Bicyclo(6,l,0)nonatrientricarbonylmolybdän (I) zu dem Komplex (II).
Power Scheduling Method for Grid Integration of a PV-BESS CHB Inverter With SOC Balancing Capability (2022)

The paper deals with a single-phase photovoltaic (PV) inverter based on the Cascaded H-Bridge (CHB) topology for Low Voltage (LV) grid. A distributed architecture of PV sources integrated with battery energy storage systems (BESS) is proposed with the particularity of avoiding the use of dc-dc converters. A method of compensating for the short-term daily variability of PV energy is also presented. The control implements power scheduling to ensure that constant active power is fed into the grid at every predetermined time interval (e.g., every quarter of an hour). Furthermore, a dedicated hybrid modulation scheme based on a sorting algorithm for balancing the state of charge (SOC) of the single cells is proposed. Numerical investigations are carried out on a 19-level CHB inverter implemented in a PLECS®(i.e., the simulation platform for power electronic systems from Plexim) environment to validate the feasibility and effectiveness of the proposed control strategy.
About the use of PCL/clay nanohybrid masterbatches (2008)

Présentation par affiche à la 4th International Conference Nanofun-Poly à Rome du 16 au 18 avril 2008
Crystal and molecular structure of niobium pentamethoxide a structure with two different conformers in the unit cell (1976)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and molecular structure of niobium pentamethoxide a structure with two different conformers in the unit cellA. A. Pinkerton, D. Schwarzenbach, L. G. Hubert-Pfalzgraf, and J. G. RiessCite this: Inorg. Chem. 1976, 15, 5, 1196–1199Publication Date (Print):May 1, 1976Publication History Published online1 May 2002Published inissue 1 May 1976https://pubs.acs.org/doi/10.1021/ic50159a043https://doi.org/10.1021/ic50159a043research-articleACS PublicationsRequest reuse permissionsArticle Views124Altmetric-Citations45LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Methemoglobin Formation in Hemoglobin Vesicles and Reduction by Encapsulated Thiols (1997)

The hemoglobin vesicle (HbV) is a red cell substitute encapsulating purified concentrated Hb in a phospholipid vesicle. In order to suppress metHb formation or autoxidation, for the long-term maintenance of the oxygen transporting capability, a series of thiols (cysteine, Cys; glutathione, GSH; homocysteine, Hcy; and acetylcysteine, Acy) were studied as reductants of metHb. Hcy and GSH showed a good suppressive effect on metHb formation, while Cys adversely accelerates the metHb formation at a rate twice that of the Hb solution without any reductants and Acy showed no change. The significant suppression by the coaddition of superoxide dismutase (SOD) and catalase to Cys indicated that Cys was easily oxidized by oxygen and simultaneously generates a large amount of active oxygens. The effective suppression of metHb formation by SOD and catalase was not observed for HbV containing no reductants, indicating that the generation of active oxygens from Hb itself is not significant. The coencapsulation of Hcy with Hb resulted in a low rate of metHb formation in HbV (initial rate, 1%/h) in vitro at an oxygen partial pressure (Po2) of 142 Torr. The rate increased with decreasing Po2, showed a maximum (2.2%/h) around Po2 = 23 Torr, and then decreased to 0%/h at 0 Torr. From these results, it is suggested that the fast metHb formation rate in the blood circulation of Wistar rats injected with 20 vol % of the HbV solution would be mainly caused by the exposure of HbV to the low Po2.
Size dependence of the ferroelectric transition of smallBaTiO3particles: Effect of depolarization (1994)

A theory has been developed to examine the depolarization effect on the ferroelectric transition of small ${\mathrm{BaTiO}}_{3}$ particles. To reduce the depolarization energy, a crystal would break up into domains of different polarization. In this study, we consider cubic particles with alternating domains separated by 180\ifmmode^\circ\else\textdegree\fi{} domain walls. The depolarization energy and the domain-wall energy were incorporated into the Landau-Ginzburg free-energy density. Assuming a hyperbolic tangent polarization profile across the domain wall, the domain-wall energy \ensuremath{\gamma} and the domain-wall half thickness \ensuremath{\xi} can be obtained by minimizing \ensuremath{\gamma} with respect to \ensuremath{\xi}. To account for ${\mathrm{BaTiO}}_{3}$ not being a perfect insulator, a Schottky space charge layer beneath the particle surface that shields the interior of the crystal from the depolarization field was considered. The equilibrium polarization P and domain width D can be obtained by minimizing the total free-energy density with respect to both P and D. The results of the calculations show that the ferroelectric transition temperature of small particles can be substantially lower than that of the bulk transition temperature as a result of the depolarization effect. Consequently, at a temperature below the bulk transition temperature, the dielectric constant \ensuremath{\epsilon} can peak at a certain cube size L. These results agree with the existing experimental observations. Finally, the theory can also be applied to other ferroelectric materials such as ${\mathrm{KH}}_{2}$${\mathrm{PO}}_{4}$ or ${\mathrm{PbTiO}}_{3}$.
A Unified Approach to QoS-Guaranteed Scheduling for Channel-Adaptive Wireless Networks (2007)

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Scheduling amounts to allocating optimally channel, rate and power resources to multiple connections with diverse quality-of-service (QoS) requirements. It constitutes a throughput-critical task at the medium access control layer of today's wireless networks that has been tackled by seemingly unrelated information-theoretic and protocol design approaches. Capitalizing on convex optimization and stochastic approximation tools, the present paper develops a unified framework for channel-aware QoS-guaranteed scheduling protocols for use in adaptive wireless networks whereby multiple terminals are linked through orthogonal fading channels to an access point, and transmissions are (opportunistically) adjusted to the intended channel. The unification encompasses downlink and uplink with time-division or frequency-division duplex operation; full and quantized channel state information comprising a few bits communicated over a limited-rate feedback channel; different types of traffic (best effort, non-real-time, real-time); uniform and optimal power loading; off-line optimal scheduling schemes benchmarking fundamentally achievable rate limits; as well as on-line scheduling algorithms capable of dynamically learning the intended channel statistics and converging to the optimal benchmarks from any initial value. The take-home message offers an important cross-layer design guideline: judiciously developed, yet surprisingly simple, channel-adaptive, on-line schedulers can approach information-theoretic rate limits with QoS guarantees. </para>
Analysis of exposure times and dose escalation of paclitaxel in ovarian cancer cell lines (1994)

A dose escalation from 10(-10) M to 10(-4) M of paclitaxel in dimethyl sulfoxide did not inhibit cell proliferation significantly in any of these cell lines. Moreover, shorter exposure times did not appear to alter the cellular response to paclitaxel. Consequently, administration of smaller dosages over shorter time periods may not compromise the cytotoxic effect of this agent. Clinical studies must be performed to validate these observations.
Guest Editorial Introduction to the Focused Section on Mechatronics for Intelligent Manufacturing (2015)

The 11 articles in this special section focus on the deployment of mechatronics for intelligent manufacturing. The articles are dedicated to new advances enabled by mechatronics in modeling, analysis, sensing and control methods, implementation, and validation for advanced manufacturing.
Acetic Anhydride Mediated Retro-Ene Reaction via a [4.4.3]Propellane Skeleton Intermediate Containing a Quaternary Ammonium Linkage (2017)

A novel retro-ene reaction via a [4.4.3]propellane intermediate containing a quaternary ammonium linkage was developed. The feature of this acetic anhydride mediated rearrangement includes the elimination of an acetoxy group at the C14 position and subsequent intramolecular nucleophilic addition of a nitrogen functional group to form an isolable ammonium salt intermediate. We clarified the reaction mechanism utilizing the deuterated derivative.
Essential Oils of Satureja, Origanum, and Thymus Species:  Chemical Composition and Antibacterial Activities Against Foodborne Pathogens (2004)

The chemical composition of the essential oils obtained from the species restricted to Greece and the eastern Mediterranean region, Satureja spinosa L. and Thymus longicaulis L.; species endemic to central and south Greece, Satureja parnassica ssp. parnassica Heldr. and Sart ex Boiss.; species endemic to the island of Crete, Origanum dictamnus L.; and species widely distributed in the Mediterranean region, Satureja thymbra L. and Origanum vulgare L. subsp. hirtum, were determined by gas chromatography (GC) and GC/mass spectrometry (MS) analysis. The in vitro antibacterial activities of the essential oils were evaluated against a panel of five foodborne bacteria (Escherichia coli 0157:H7 NCTC 12900, Salmonella enteritidis PT4, Staphylococcus aureus ATCC 6538, Listeria monocytogenes ScottA, and Bacillus cereus FSS 134). The analytical data indicated that various monoterpene hydrocarbons and phenolic monoterpenes constitute the major components of the oils, but their concentrations varied greatly among the oils examined. The antibacterial assay results showed that 5 muL doses of the essential oils extracted from the endemic Satureja species in Greece possess remarkable bactericidal properties, which are clearly superior as compared to those of Origanum and Thymus species essential oils. Therefore, they represent an inexpensive source of natural mixtures of antibacterial compounds that exhibit potentials for use in food systems to prevent the growth of foodborne bacteria and extend the shelf life of the processed food.
Combination of enhanced AdaBoosting techniques for the characterization of breast cancer tumors (2009)

Breast cancer is a life threatening disease affecting one of every eight women, with the risk increasing significantly with age. Non-invasive diagnostic modalities are preferable over biopsy. However, these non-invasive diagnostic techniques have lower diagnostic accuracy when compared to biopsy. Currently, CAD (Computer-Aided Diagnosis) techniques have demonstrated strong potential to increase the accuracy of such non-invasive diagnostic modalities. This paper proposes the use of boosting to increase the accuracy of CAD-based techniques to solve the breast cancer characterization problem. It investigates and compares the performance of popular variants of the boosting algorithms, namely: AdaBoosting, AveBoosting, GentleBoosting, ConserBoosting, and Average Conservative Boosting and their suitability for the breast cancer tumor characterization problem. This work also proposes a hybrid boosting algorithm that combines the advantages of several boosting techniques. The results of applying the different boosting techniques investigated on real breast cancer benchmarks show that the hybrid boosting algorithm outperforms the other boosting techniques on average by 48%.
Unusual Reactivity and Metal Affinity of Water-Soluble Dipyrrins (2022)

Dipyrrins are a versatile class of organic ligands capable of fluorogenic complexation of metal ions. The primary goal of our study was to evaluate dipyrrins functionalized with ester and amide groups in 2,2'-positions in sensing applications. While developing the synthesis, we found that 3,3',4,4'-tetraalkyldipyrrins 2,2'-diesters as well as 2,2'-diamides can undergo facile addition of water at the <i>meso</i>-bridge, transforming into colorless <i>meso</i>-hydroxydipyrromethanes. Spectroscopic and computational investigation revealed that this transformation proceeds via dipyrrin cations, which exist in equilibrium with the hydroxydipyrromethanes. While trace amounts of acid favor conversion of dipyrrins to hydroxydipyrromethanes, excess acid shifts the equilibrium toward the cations. Similarly, the presence of Zn<sup>2+</sup> facilitates elimination of water from hydroxydipyrromethanes with chromogenic regeneration of the dipyrrin system. In organic solutions in the presence of Zn<sup>2+</sup>, dipyrrin-2,2'-diesters exist as mixtures of <i>mono</i>-(LZnX) and <i>bis</i>-(L<sub>2</sub>Zn) complexes. In L<sub>2</sub>Zn, the dipyrrin ligands are oriented in a nonorthogonal fashion, causing strong exciton coupling. In aqueous solutions, dipyrrins bind Zn<sup>2+</sup> in a 1:1 stoichiometry, forming <i>mono</i>-dipyrrinates (LZnX). Unexpectedly, dipyrrins with more electron-rich 2,2'-carboxamide groups revealed ∼20-fold lower affinity for Zn<sup>2+</sup> than the corresponding 2,2'-diesters. Density Functional Theory (DFT) calculations with explicit inclusion of water reproduced the observed trends and allowed us to trace the low affinity of the dipyrrin-diamides to the stabilization of the corresponding free bases via hydrogen bonding with water molecules. Overall, our results reveal unusual trends in the reactivity of dipyrrins and provide clues for the design of dipyrrin-based sensors for biological applications.
18F-2-FLUORO-2-DEOXYGLUCOSE POSITRON EMISSION TOMOGRAPHY OF HUMAN CEREBRAL GLIOMAS (1981)

Chiro, G. Di; DeLaPaz, R.; Smith, B.; Kornblith, P.; Sokoloff, L.; Brooks, R.; Blasberg, R.; Cummins, C.; Kessler, R.; Wolf, A.; Fowler, J.; London, W.; Sever, J. Author Information
Carbon–carbon double bond position elucidation in fatty acids using ozone-coupled direct analysis in real time mass spectrometry (2019)

Ozonolysis combined with DART MS analysis provides a facile method for the identification of double bond position in lipids.
Multiphase-Multistep Gadolinium-Enhanced MR Angiography of the Abdominal Aorta and Runoff Vessels (2001)

Multiphase-multistep 3D-Gd-MRA reduces the limitations of standard 3D-Gd-MRA techniques with respect to anatomic coverage, spatial resolution, and nonuniform arterial vessel enhancement.
An Algorithm-Independent Definition of Damage SpreadingApplication to Directed Percolation (2003)

By &amp;quot;slightly different copies &amp;quot; we mean two systems that differ initially only on a small number of sites. If we find, with non-vanishing probability, that the difference between these two systems did not go to zero at long times, we say that &amp;quot;damage spreads.&amp;quot;
Efficient and scalable demand response for the smart power grid (2011)

A demand response setup is considered entailing a set of appliances with deferrable and non-interruptible tasks. A mixed-integer linear programming model for scheduling the operational periods and power levels of the appliances is formulated in response to known dynamic pricing information with the objective of minimizing the total electricity cost and consumer dissatisfaction. A scalable algorithm yielding a near-optimal solution is developed by enforcing a separable structure, and using Lagrangian relaxation. Thus, the original problem is decomposed to per-appliance subproblems, which can be solved exactly based on dynamic programming. The proximal bundle method is employed to obtain a solution to the convexified version, which helps recovery of a primal feasible solution. Numerical tests validate the proposed approach.
Quaternary Census Transform Based on the Human Visual System for Stereo Matching (2020)

The census transform is a non-parametric local transform that is widely used in stereo matching. This transform encodes the structural information of a local patch into a binary code stream representing the relative intensity ordering of the pixels within the patch. Despite its high performance in stereo matching, the census transform often generates identical binary code streams for two different patches because it simply thresholds the pixels within the patch at the center pixel intensity. To overcome this problem, we introduce a quaternary census transform that encodes the local structural information into a quaternary code stream by employing both the relative intensity ordering and the minimum visibility threshold of the human eye known as the just-noticeable difference. Moreover, because the human eye activates different areas of the retina based on brightness, the patch size for the proposed quaternary census transform adaptively varies depending on the luminance of each pixel. Experimental results on well-known Middlebury stereo datasets prove that the proposed transform outperforms the other census transform-based methods in terms of the accuracy of stereo matching.
Supplemental Figure 3 from First-in-Human Trial of Epichaperome-Targeted PET in Patients with Cancer (2023)

&lt;p&gt;Tumor PU-H71 retention at 24 hours post-injection (quantified by standard uptake value) is not explained by plasma radiotracer exposure (quantified by plasma AUC from 10 min to 4 h post-injection, see Methods), as indicated by Spearman Test R-value.&lt;/p&gt;
Magnetic field for efficient exhaustion of CO 2 laser-produced Sn plasma in EUV light source (2008)

We are developing a laser produced plasma light source for high volume manufacturing (HVM) EUV lithography. The light source is based on a high power, high repetition rate CO<sub>2</sub> laser (10.6&mu;m) system, a tin (Sn) target and a magnetic ion guiding for Sn treatment. We evaluated the characteristics of Sn debris generated by a CO<sub>2</sub> laser produced plasma. Experiments were performed with bulk Sn-plate targets and Mo/Si multilayer mirror samples were used for debris analysis. We observed very thin and uniform Sn layers of nano/sub-nano size debris particles. The layer deposition rate at 120mm from the plasma is, without magnetic field, about 30nm per million shots. The fast Sn ion flux was measured with Faraday cups and the signal decreased by more than 3 orders of magnitude on application of a magnetic field of 1T. The Sn deposition on the Mo/Si multilayer mirror decreased in small magnetic field space by a factor of 5. In a large magnetic field space, the effectiveness of the magnetic guiding of Sn ions is examined by monitoring the fast Sn ions. The ion flux from a Sn plasma was confined along the magnetic axis with a maximum magnetic field of 2T.
Implementation of tertiary storage file system with partial migration mechanism on an 8 mm tape archiver and its performance evaluation (1999)

Recently the demand for large-scale file systems has been increasing for global information systems, multimedia databases and so on. However, current commercial hierarchical file management systems are not efficient enough to handle huge data files. Migration of a whole file from a tape to a disk takes a very long time. Usually, users are not interested in a whole image but only in a small portion of it. Thus, there is no need for full migration. We designed and implemented a partially migratable file system based on 8 mm tape archivers. The file system transfers only the necessary portion of a file onto the disk. Two real application programs, radiometric/geometric correction and NDVI (Normalized Difference Vegetation Index) generation, were chosen and executed using our experimental file system. Large performance improvements were achieved compared to the conventional file-level migration scheme. © 1999 Scripta Technica, Syst Comp Jpn, 30(3): 23–30, 1999
Optical thin films by wet chemical processing (1994)

Wet chemical processing of ceramics, glasses and inorganic-organic hybrids in the form of films has a large number of both proven and potential optical applications. The present review focuses on progress since 1990 in the areas of ferroelectric films, electrochromic and photochromic films, planar waveguides, and NLO films. Where appropriate, advances are illustrated by results obtained in our laboratories.