gebhart/patrepeval huggingface dataset:
Fluorescence properties of dansyl groups covalently bonded to the surface of oxidatively functionalized low-density polyethylene film (1985)

Brief oxidation of low-density polyethylene film with chromic acid in aqueous sulfuric acid introduced carboxylic acid and ketone and/or aldehyde groups onto the surface of the film. The carboxylic acid moieties can be used to attach more complex functionality to the polymer surface. We are developing this surface-functionalized polyethylene (named 'polyethylene carboxylic acid,' PE-CO2H, to emphasize the functional group that dominates its surface properties) as a substrate with which to study problems in organic surface chemistry--especially wetting, polymer surface reconstruction, and adhesion--using physical-organic techniques. This document describes the preparation, characterization, and fluorescence properties of derivatives of PE-CO2H in which the Dansyl (5-dimethylaminonaphthalene-1-sulfonyl) group has been covalently attached by amide links to the surface carbonyl moieties. Keywords: Acidity; and Solvent effects.
Signatures of the Order−Disorder Transition in Copolymers with Quenched Sequence Disorder (2004)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSignatures of the Order−Disorder Transition in Copolymers with Quenched Sequence DisorderH. B. Eitouni, T. J. Rappl, E. D. Gomez, N. P. Balsara, S. Qi, A. K. Chakraborty, J. M. J. Fréchet, and J. A. PopleView Author Information Department of Chemical Engineering, University of California, Berkeley, California 94720; Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720; Department of Chemistry, University of California, Berkeley, California 94720; and Stanford Synchrotron Radiation Laboratory, SLAC, PO Box 4349, Stanford, California 94309 Cite this: Macromolecules 2004, 37, 23, 8487–8490Publication Date (Web):October 15, 2004Publication History Received13 July 2004Revised15 September 2004Published online15 October 2004Published inissue 1 November 2004https://pubs.acs.org/doi/10.1021/ma048583ahttps://doi.org/10.1021/ma048583arapid-communicationACS PublicationsCopyright © 2004 American Chemical SocietyRequest reuse permissionsArticle Views271Altmetric-Citations15LEARN 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-Alertsclose SUBJECTS:Copolymers,Diseases and disorders,Optical properties,Phase transitions,X-ray scattering Get e-Alerts
Preferential Deposition of Pt Nanoparticles Inside Single‐Walled Carbon Nanohorns (2004)

Pt nanoparticles are incorporated in the three-dimensional nanospace inside single-walled carbon nanohorns using a simple colloidal preparation method. The Pt particles are preferentially deposited inside nanohorns and are located near the defects (see Figure).
Comparison of Data Collected by Different Methods of Field Survey During the Reconstruction of Forest Road (2017)

Sumske su ceste jednostavni građevinski objekti koji tijekom cijele godine omogucuju stalan i nesmetan promet motornim vozilima u prvom redu pri izvođenju radova vezanih uz održivo gospodarenje sumama. Optimalna mreža primarnih sumskih prometnica, ako je pravilno raspoređena i položena, osigurava ispunjenje svih zadaca propisanih sumskogospodarskim planovima uz najmanje troskove i uz najveci ucinak. Istraživanje je provedeno na sumskoj cesti »587 B1 004« stacionaže 15+20, 16 hm u gorskim prebornim sumama GJ Belevine, u Zalesini, Nastavno-pokusnom sumskom objektu Sumarskoga fakulteta Sveucilista u Zagrebu. Primijenjene su dvije metode prikupljanja terenskih podataka pri izravnom trasiranju radi izrade glavnoga projekta rekonstrukcije spomenute sumske ceste. Prva, klasicna metoda obuhvacala je upotrebu mjernih uređaja teodolita DE-5A, nivelira Sokkia C330 i ostale mjerne opreme, dok je pri suvremenoj metodi prikupljanja terenskih podataka koristena radna stanica Sokkia Series 3030R. Prikupljeni terenski podaci obrađeni su u racunalnom programu »Cesta«, a za statisticku obradu podataka koristen je racunalni program STATISTICA 8. Statistickom analizom podataka prikupljenih razlicitim metodama terenske izmjere ustanovljeno je kako između podataka koji su povezani uz horizontalno i vertikalno razvijanje trase sumske ceste »587 B1 004« ne postoji statisticki znacajna razlika. Statisticki znacajna razlika pojavljuje se pri usporedbi povrsine poprecnih presjeka, volumena zemljanih masa i elemenata kolnicke konstrukcije, sto se dovodi u izravnu vezu s razlicitim nacinom prikupljanja terenskih podataka prilikom izmjere poprecnih presjeka.
Effect of CF/sub 4/ plasma pretreatment on low temperature oxides (2002)

This study describes a novel technique for forming low temperature oxides (<350/spl deg/C) using a replacement metal gate process. Low temperature oxides were generated by N/sub 2/O plasma in a PECVD system with pretreatment in CF/sub 4/. Fabricated oxides demonstrate excellent current-voltage (I-V) characteristics, such as low leakage current, high breakdown charge and good reliability. Experimental results indicate that CF/sub 4/ plasma treatment can significantly improve the mobility and resistance against hot carrier stress of MOSFETs. With excellent electrical properties, this technique is suitable for fabrication low temperature devices.
Robust non-rigid registration of 2D and 3D graphs (2012)

We present a new approach to matching graphs embedded in ℝ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> or ℝ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> . Unlike earlier methods, our approach does not rely on the similarity of local appearance features, does not require an initial alignment, can handle partial matches, and can cope with non-linear deformations and topological differences. To handle arbitrary non-linear deformations, we represent them as Gaussian Processes. In the absence of appearance information, we iteratively establish correspondences between graph nodes, update the structure accordingly, and use the current mapping estimate to find the most likely correspondences that will be used in the next iteration. This makes the computation tractable. We demonstrate the effectiveness of our approach first on synthetic cases and then on angiography data, retinal fundus images, and microscopy image stacks acquired at very different resolutions.
Nutritional influences on some major enteric bacterial diseases of pig (2002)

There are several enteric bacterial diseases and conditions of pigs that require control to prevent overt disease, to reduce morbidity and mortality, and to improve the efficiency of production. Traditionally, veterinarians, feed manufacturers and producers have relied upon antibiotics and minerals (for example, ZnO, CuSO4) in diets for a large part of this control. However, recent trends, particularly in Europe, are to reduce antimicrobial use and seek alternative or replacement strategies for controlling enteric bacterial diseases. The majority of these strategies rely on 'nutrition', taken in its broadest sense, to reduce the susceptibility of pigs to these diseases. Evidence to date suggests that specific dietary interventions, for example feeding very highly-digestible diets based on cooked white rice, can reduce the proliferation of a number of specific enteric bacterial infections, such as post-weaning colibacillosis. No simple and universal way to reduce susceptibility to pathogens in the gastrointestinal tract has been identified, and the underlying basis for many of the reported positive effects of 'nutrition' on controlling enteric infections lacks robust, scientific understanding. This makes it difficult to recommend dietary guidelines to prevent or reduce enteric bacterial diseases. Furthermore, some diseases, such as porcine intestinal spirochaetosis caused by Brachyspira pilosicoli, are sometimes associated with other pathogens (co-infections). In such cases, each pathogen might have different nutrient requirements, ecological niches and patterns of metabolism for which a variety of dietary interventions are needed to ameliorate the disease. Greater understanding of how 'nutrition' influences gut epithelial biology and immunobiology, and their interactions with both commensal and pathogenic bacteria, holds promise as a means of tackling enteric disease without antimicrobial agents. In addition, it is important to consider the overall system (i.e. management, housing, welfare) of pig production in the context of controlling enteric bacterial diseases.
ChemInform Abstract: A Combined Microbial/Chemical Synthesis of (+)‐(R)‐Methyloxirane Having High Enantiomeric Excess. (1988)

Abstract Clostridium thermosaccharolyticum converts glucose (I) to R‐propylene glycol (II).
Process and Device Simulation of a SiC Floating Junction Schottky Barrier Diode (Super-SBD) (2005)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Störung funktioneller resting state-Netzwerke in einem transgenen Mausmodell für Tau-Pathologie (2021)

Ziel/Aim Transgene Tiermodelle, die bestimmte Aspekte menschlicher neurodegenerativer Erkrankungen abbilden, haben sich für die Erforschung der zugrundeliegenden Pathomechanismen als sehr wertvoll erwiesen. Die Störung funktioneller zerebraler Netzwerke des wachen Gehirns kann im Tiermodell jedoch nur schwer mit der klassischen Methode fMRI untersucht werden, da dies die Anästhesie des Tieres erfordert. Metabolische Netzwerkanalyse mit F-18-FDG-PET bietet dagegen die Möglichkeit, die aktivitätsabhängige Einlagerung des Tracers vom nachfolgenden Scan unter Narkose zu trennen, und damit die Netzwerk-Aktivität des wachen Gehirns zu visualisieren. Hier untersuchten wir im Tauopathie-Mausmodell rTg4510 das fronto-thalamo-hippocampale Netzwerk, für welches bei Alzheimer-Patienten funktionelle Beeinträchtigungen bekannt sind.
Acute Myocardial Infarction: Evaluation with First-Pass Enhancement and Delayed Enhancement MR Imaging Compared with201Tl SPECT Imaging (2004)

Good correlation and agreement with (201)Tl SPECT indicate DE MR imaging may be used to estimate infarct size 6 days after reperfused acute myocardial infarction. DE MR imaging is more sensitive for detection of inferior infarction than is (201)Tl SPECT. Patients with microvascular obstruction on FPE MR images have larger infarcts.
Lensfree video microscopy: high throughput monitoring and cell tracking of 2D cell cultures (2015)

In order to extend the analysis of the datasets produced by lensfree video microscopy we have implemented a cell tracking algorithm to combine and correlate cell motility to the previously devised metrics to quantify e.g. cell adhesion and spreading, cell division, and cell death. In this paper we present the assessment of these new methodology on experiments involving three different cell lines, namely 3T3 fibroblast cells, primary HUVEC cells and macrophage THP1 cells. We demonstrate that the good spatial resolution and the fast frame rate obtained with of our lensfree video microscope allows standard cell tracking algorithm to be computed. The results is the possibility to analyze thousands of cells successfully tracked over tens of hours. The results is the possibility to compare different cell cultures in terms of e.g. cell motility and cell confinement ration. Ultimately we managed to measure the doubling time at single cell level over a large number of N=235 cells tracked over two days.
Synthesis and Characterization of Y2Ru2O7 and Y2-XPrXRu2O7 for Cathode Application in Intermediate Temperature Solid Oxide Fuel Cells (2006)

Nanocrystalline powders of Y2Ru2O7 and Y2-xPrxRu2O7 were prepared by a co-precipitation method. Pr was chosen as the A- site dopant in order to increase the electrical conductivity of Y2Ru2O7. Phase and morphology were studied by XRD and FE- SEM, which showed both systems exhibit a particle size of about 100 nm, and the doped powders were single pyrochlore phase. The electrical conductivity of a dense bar of Y2- xPrxRu2O7 was measured at several temperatures by d.c. 4-probe method, while the electrochemical properties of Y2-xPrxRu2O7 pyrochlores were tested in contact to ESB electrolytes, using Electrochemical Impedance Spectroscopy (EIS) in air. The Y2- xPrxRu2O7 on ESB electrolyte solid-state cells presents a significant decrease of electrodes impedance.
Thermal Robustness of VFB and EOT in HfOx(N) p-MOS Devices with Partially Silicided Pt Gate Electrodes (2006)

We investigated the process window of partially silicided (PASI) Pt gate electrodes which can effectively suppress unintentional threshold voltage increases of Hf-based high-k p- MOSFETs, and the impact of application of the PASI Pt (PASI- PtSi) gate electrode on their electrical properties. The values of the EOT, flat-band voltage, and the gate leakage current density of the HfOx(N) p-MOS capacitors with the PASI- PtSi gate electrodes are almost identical when the Pt film is more than double the thickness of the poly-Si films at silicidation temperatures from 400 to 600ºC. No degradation in the gate leakage current density of the HfOx(N) MOS capacitors with the PASI-PtSi gate electrodes was observed, compared with the FUSI-NiSi and FUSI-PtSi gate electrodes. Consequently, it is concluded that the PASI technology is useful in scaled CMOS devices with Hf-based high-k dielectrics.
Air bubble growth in guinea pig tissue by rectified diffusion (1982)

It has been previously shown [E. ter Haar and S. Daniels, Phys. Med. Biol. 26, 1145–1149 (1981)] that guinea pigs that are exposed to therapeutic ultrasound of intensities in the range of 80 mW/cm2 to 680 mW/cm2 (spatial average) develop air bubbles of observable size within the exposed tissue. We present evidence that air bubble growth in guinea pig tissue during ultrasonic irradiation is due to rectified diffusion. Through numerical integration of existing rectified diffusion equations, for the frequency and intensities used by ter Haar and Daniels in their recent work, we have found that small “undetectable” bubbles grow during irradiation to a “detectable” size. The number of bubbles growing and the final sizes predicted closely resembles the results obtained experimentally. [Work supported by the ONR and the NSF.]
EUV lithography patterning using multi-trigger resist (2023)

Research and development of EUV photoresists capable of supporting future requirements such as high-NA EUV continues. It is foreseen that, to contend with much higher photon-shot noise, resists will require high EUV absorbance to offset the need for thin films in high-NA, where depth of focus may be less than 20nm. We are developing a photoresist based on the multi-trigger concept, which seeks to suppress roughness using a new photoresist mechanism, and which is based on molecular rather than polymeric materials to maximize resolution. MTR Resist absorbance of greater than 18 μm<sup>-1</sup> has been measured. Here we present recent NXE3400 results where, by modifying the PAG to optimize the reactions rates in the MTR mechanism, we have reduced the dose requirement compared to the orthodox high opacity MTR resists previously presented. Lines of 14 nm width at p28 nm can be patterned at a dose between 21 mJ/cm<sup>2</sup> and 48 mJ/cm<sup>2</sup> dependent on formulation ratio, with optimum LWR (3.9 nm, biased) occurring at 43 mJ/cm<sup>2</sup> with a film thickness of 20.7 nm. Similarly, we present p34 pillars patterned between 21 mJ/cm<sup>2</sup> and 59 mJ/cm<sup>2</sup> doses for 17 nm diameter pillars, with a minimum LCDU for 19 nm diameter pillars of 3.05 nm occurring with a 21.7 nm FT at 58 mJ/cm<sup>2</sup>. The same resist can pattern p36 pillars at 52 mJ/cm<sup>2</sup> with an LCDU of 3.44 nm at 18 nm diameter with no measured defects between 15.9 nm and 18.1 nm diameter. The impact of the substrate (such as use of various organic underlayers or SOG layers) on defectivity issues such as bridging or falling pillars will be presented here.
Two-Dimensional Gas Chromatographic and Mass Spectrometric Characterization of Lipid-Rich Biological Matrices─Application to Human Cerumen (Earwax) (2021)

Earwax is a readily accessible biological matrix that has the potential to be used in disease diagnostics. However, its semisolid nature and high chemical complexity have hampered efforts to investigate its potential to reveal disease markers. This is because more conventional methods of analysis such as gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry yield unsatisfactory results due to the presence of many nonvolatile and/or coeluting compounds, which in some cases have very similar mass spectrometric profiles. In addition, these routine methods often require the sample to be saponified, which dramatically increases the complexity of the analysis and makes it difficult to determine which compounds are actually present versus those that are produced by saponification. In this study, two-dimensional GC mass spectrometry (GC × GC-MS) was successfully applied for the characterization of the chemical components of earwax from healthy donors using nonpolar (primary) and midpolar (secondary) columns without saponification. Over 35 of the compounds that were identified are reported for the first time to be detected in unsaponified earwax. The resulting GC × GC-MS contour plots revealed visually recognizable compound class clusters of previously reported groups including alkanes, alkenes, fatty acids, esters, triglycerides, and cholesterol esters, as well as cholesterol and squalene. The application of GC × GC-MS revealed results that provide a foundation upon which future studies aimed at comparing healthy donor earwax to that from individuals exhibiting various disease states can be accomplished.
Comparison of pathways to the versatile synthon of no‐carrier‐added 1‐bromo‐4‐[18F]fluorobenzene (2004)

Abstract The availability of no‐carrier‐added (n.c.a.) 1‐bromo‐4‐[ 18 F]fluorobenzene with high radiochemical yields is important for 18 F‐arylation reactions using metallo‐organic 4‐[ 18 F]fluorophenyl compounds (e.g. of lithium or magnesium) or Pd‐catalyzed coupling. In this study, different methods for the preparation of 1‐bromo‐4‐[ 18 F]fluorobenzene by nucleophilic aromatic substitution reactions using n.c.a. [ 18 F]fluoride were examined. Of six pathways compared, symmetrical bis ‐(4‐bromphenyl)iodonium bromide proved most useful to achieve the title compound in a direct, one‐step nucleophilic substitution with a radiochemical yield (RCY) of 65% within 10 min. Copyright © 2004 John Wiley &amp; Sons, Ltd.
Luminescent gels by self-assembling platinum complexes (2012)

A platinum complex bearing a tetraethylene glycol chain has been designed and its self-assembly properties investigated. In solution, only a yellow phosphorescence of the aggregated species is observed. The complex gives luminescent gels of different colours with DCM and DMF, reaching up to 60% photoluminescence quantum yield.
Conversion of Topoisomerase I Cleavage Complexes on the Leading Strand of Ribosomal DNA into 5′-Phosphorylated DNA Double-Strand Breaks by Replication Runoff (2000)

Topoisomerase I cleavage complexes can be induced by a variety of DNA damages and by the anticancer drug camptothecin. We have developed a ligation-mediated PCR (LM-PCR) assay to analyze replication-mediated DNA double-strand breaks induced by topoisomerase I cleavage complexes in human colon carcinoma HT29 cells at the nucleotide level. We found that conversion of topoisomerase I cleavage complexes into replication-mediated DNA double-strand breaks was only detectable on the leading strand for DNA synthesis, which suggests an asymmetry in the way that topoisomerase I cleavage complexes are metabolized on the two arms of a replication fork. Extension by Taq DNA polymerase was not required for ligation to the LM-PCR primer, indicating that the 3' DNA ends are extended by DNA polymerase in vivo closely to the 5' ends of the topoisomerase I cleavage complexes. These findings suggest that the replication-mediated DNA double-strand breaks generated at topoisomerase I cleavage sites are produced by replication runoff. We also found that the 5' ends of these DNA double-strand breaks are phosphorylated in vivo, which suggests that a DNA 5' kinase activity acts on the double-strand ends generated by replication runoff. The replication-mediated DNA double-strand breaks were rapidly reversible after cessation of the topoisomerase I cleavage complexes, suggesting the existence of efficient repair pathways for removal of topoisomerase I-DNA covalent adducts in ribosomal DNA.
Synthesis of 6, 14‐ethenoisomorphinans and 6, 14‐ethenomorphinans based on Diels‐Alder adducts of 6‐demethoxythebaine and 6‐demethoxy‐β‐dihydrothebaine; pharmacology of the isomorphinans (Chemistry of Opium Alkaloids, Part XIX) (1984)

Abstract Two different types of Diels‐Alder additions to morphinan‐6, 8‐dienes have been found. 6‐Demethoxythebaine ( 2 ) yielded ethyl 4, 5α‐epoxy‐3‐methoxy‐ N ‐methyl‐6, 14‐ethenoisomorphinan–7α‐carboxylate ( 3 ) with ethyl acrylate, in analogy to the reaction with thebaine. The ester 3 was converted into the alcohol 4 , of which the 3‐methoxy ether was hydrolyzed to yield 5 . Similarly, 2 gave the 7α‐acetyl‐6, 14‐ethenoisomorphinan 7 with methyl vinyl ketone. The latter compound was converted into 4 using methylmagnesium iodide. With propylmagnesium bromide, 7 afforded four compounds; two are new etorphine analogues ( 8 and 9 ), to which we were able to assign the absolute configuration; the other two are the Grignard reduction products 10 and 11 . When the 4, 5α‐epoxy bridge of 2 is first opened, the Diels‐Alder reaction with methyl vinyl ketone proceeds from the other side of the diene system yielding the 7β‐acetyl‐6, 14‐ethenomorphinan 6 , which belongs to a novel class of rigid morphinans. Preliminary pharmacological screening of 5, 8 and 9 showed these compounds to be potent agonists.