gebhart/patrepeval huggingface dataset:
Evidence for hyperconjugative stabilization of olefins from tautomeric equilibria (1967)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence for hyperconjugative stabilization of olefins from tautomeric equilibriaLloyd J. Dolby and Gary N. RiddleCite this: J. Org. Chem. 1967, 32, 11, 3481–3485Publication Date (Print):November 1, 1967Publication History Published online1 May 2002Published inissue 1 November 1967https://pubs.acs.org/doi/10.1021/jo01286a043https://doi.org/10.1021/jo01286a043research-articleACS PublicationsRequest reuse permissionsArticle Views203Altmetric-Citations7LEARN 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 Get e-Alerts
On the Importance of Spectral Interferences in Atomic Absorption Spectroscopy (1975)

Various types of spectral interferences in atomic absorption spectroscopy were investigated. Of particular concern were interferences in which atomic electronic processes are a problem. Source emission of multiplets and other radiation near the analysis line can cause nonlinear analytical curves and poor detection limits. Direct absorption spectral overlaps were found to be of importance in some analyses, particularly for transition elements. Comprehensive lists of observed and predicted spectral interferences are presented. It is concluded that spectral interferences may be of more importance than previously supposed in routine analytical situations. Further, there should be an optimal spectral bandpass for each analytical transition.
Spectrum of synchronous picosecond sonoluminescence (1992)

The clocklike emission of picosecond pulses of light with a peak power over 30 mW has been observed to originate from a bubble trapped at the velocity node of a resonant sound field in water. The spectrum of this bright sonoluminescence is broadband and our measurements show that if a spectral peak exists, it lies at photon energies above 6 eV.
All Convex Polyhedra can be Clamped with Parallel Jaw Grippers. (1994)

Abstract We study various classes of polyhedra that can be clamped using parallel jaw grippers. We show that all n-vertex convex polyhedra can be clamped regardless of the gripper size and present an O(n + k) time algorithm to compute all positions of a polyhedron that allow a valid clamp where k is the number of antipodal pairs of features. We also show that all terrain polyhedra and rectilinear polyhedra can be clamped and a valid clamp can be found in linear time.
Strength effects in an imploding cylinder with constant mass-to-explosive loading (2013)

High explosives were used to implode thin-walled metal cylinders of different strengths (Al 6061-O, Al 6061-T6, mild steel, and stainless steel) at a constant mass-to-explosive (M/C) ratio. The velocity history of the inner surface of the imploding cylinder was measured via photonic Doppler velocimetry. These histories and maximum velocities were compared to an imploding Gurney model that used a detonation pressure-based time constant, giving good agreement with the experiments. The deceleration caused by strength effects was modeled via a simplified stress-strain curve, which was then used to predict the entire velocity history.
Low-complexity joint data detection and channel equalisation for highly mobile orthogonal frequency division multiplexing systems (2010)

This study is concerned with the challenging and timely problem of channel equalisation and data detection for orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency-selective and very rapidly time-varying channels. The algorithm is based on the space alternating generalised expectation-maximisation (SAGE) technique which is particularly well suited to multicarrier signal formats and can be easily extended to multi-input multi-output-OFDM systems. In fast fading channels, the orthogonality between subcarriers is destroyed by the time variation of a fading channel over an OFDM symbol duration which causes severe inter-carrier interference (ICI) and, in conventional frequency-domain approaches, results in an irreducible error floor. The proposed joint data detection and equalisation algorithm updates the data sequences in series leading to a receiver structure that also incorporates ICI cancellation, enabling the system to operate at high vehicle speeds. A computational complexity investigation as well as detailed computer simulations indicate that this algorithm has significant performance and complexity advantages over existing suboptimal detection and equalisation algorithms proposed earlier in the literature.
Intrinsic video and applications (2014)

We present a method to decompose a video into its intrinsic components of reflectance and shading, plus a number of related example applications in video editing such as segmentation, stylization, material editing, recolorization and color transfer. Intrinsic decomposition is an ill-posed problem, which becomes even more challenging in the case of video due to the need for temporal coherence and the potentially large memory requirements of a global approach. Additionally, user interaction should be kept to a minimum in order to ensure efficiency. We propose a probabilistic approach, formulating a Bayesian Maximum a Posteriori problem to drive the propagation of clustered reflectance values from the first frame, and defining additional constraints as priors on the reflectance and shading. We explicitly leverage temporal information in the video by building a causal-anticausal, coarse-to-fine iterative scheme, and by relying on optical flow information. We impose no restrictions on the input video, and show examples representing a varied range of difficult cases. Our method is the first one designed explicitly for video; moreover, it naturally ensures temporal consistency, and compares favorably against the state of the art in this regard.
Chronic CRP-Exposure Inhibits VEGF-Induced Endothelial Cell Migration (2010)

The observed time course for CRP-mediated PTEN upregulation corresponds to the exposure time needed for inhibition of Akt phosphorylation and migration and may therefore constitute a potential mechanism by which CRP inhibits inducible Akt phosphorylation and EC migration.
Langmuir-Blodgett deposition of a ring-shaped molecule (valinomycin) (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLangmuir-Blodgett deposition of a ring-shaped molecule (valinomycin)J. B. Peng, B. M. Abraham, P. Dutta, J. B. Ketterson, and H. Frank GibbardCite this: Langmuir 1987, 3, 1, 104–106Publication Date (Print):January 1, 1987Publication History Published online1 May 2002Published inissue 1 January 1987https://pubs.acs.org/doi/10.1021/la00073a018https://doi.org/10.1021/la00073a018research-articleACS PublicationsRequest reuse permissionsArticle Views80Altmetric-Citations29LEARN 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 Get e-Alerts
Commercial Applications of Agents: Lessons, Experiences and Challenges (2006)

As has been argued very eloquently and effectively, there is a chasm that needs to be crossed in the adoption of any new technology [8], and the marketing of such technologies must somehow try to bridge the gap that arises. Many currently
Effects of radiotherapy on salivary gland function in patients with head and neck cancers (2015)

Background/purpose: We explored changes in salivary gland function of head-and-neck cancer patients after radiotherapy, including pH of saliva, stimulated salivary flow rate, and saliva buffering capacity. The pH of saliva included that of parotid gland, submaxillary gland, and total resting saliva. We also investigated whether the acidity of dental plaque lowered pH of saliva. Materials and methods: From a total of 62 patients, 11 had repeated measurements taken before and every month after radiotherapy. The remaining 51 patients had a single measurement taken after radiotherapy. Seven normal patients served as the control group. Results: In the repeated measurement group, all examinations decreased dramatically in the 1st month after radiotherapy (P < 0.0001), and recovered from the 3rd month to the 6th month, but the flow rate could not return to pretreatment level. In the single measurement group, unilabiate linear regression analysis showed that the time-period after radiotherapy was a significant predictor influencing the pH of the submaxillary gland and total resting saliva. Pearson correlation coefficient analysis showed that the pH of dental plaque had a positive linear correlation with that of saliva. Concerning the influence of time-period, within 1 year after radiotherapy, all examinations were dropped. After 1 year the pH of resting saliva and plaque began to increase over time. The stimulated flow rate, pH of stimulated saliva, and buffering capacity, dropped < 1 year after radiotherapy group, increased 1–5 years after radiotherapy group, but dropped again > 5 years after radiotherapy group. Conclusion: Our results indicated that oral hygiene care is important especially during the early period after radiotherapy.
Ceramide synthesis in the endoplasmic reticulum can permeabilize mitochondria to proapoptotic proteins (2007)

Increased mitochondrial ceramide levels are associated with the initiation of apoptosis. There is evidence that ceramide is causal. Thus, the conversion of the precursor, dihydroceramide, to ceramide by the enzyme dihydroceramide desaturase may be important in preparing the cell for apoptosis. Ceramide can initiate apoptosis by permeabilizing the mitochondrial outer membrane to apoptosis-inducing proteins. However, the mitochondrion's ability to produce ceramide may be limited by its proteome. Here, we show that ceramide synthesized in isolated mammalian endoplasmic reticulum (ER) vesicles from either C8-dihydroceramide or sphingosine to produce long-chain ceramide can transfer to isolated mitochondria. The rate of transfer is consistent with a simple collision model. The transfer of the long-chain ceramide is faster than expected for an uncatalyzed process. Sufficient ceramide is transferred to permeabilize the outer membrane to cytochrome c and adenylate kinase. The mitochondria-associated membranes, ER-like membranes that are tightly associated with isolated mitochondria, can produce enough ceramide to permeabilize the outer membrane transiently. Thus, this ceramide exchange obviates the need for a complete ceramide de novo pathway in mitochondria to increase ceramide levels to the critical value required for functional changes, such as ceramide channel self-assembly followed by protein release.
Selective Determination of Catechol in the Presence of Hydroquinone at Bare Indium Tin Oxide Electrodes via Peak‐Potential Separation and Redox Cycling by Hydrazine (2007)

Abstract The electrochemical, selective determination of catechol (CT) in the presence of hydroquinone (HQ) is not readily achieved, because the formal potentials of two phenolic compounds are very close. Here, we have developed a simple electrochemical method for the selective determination of CT by using bare indium tin oxide electrodes and employing CT redox cycling by hydrazine. The cyclic voltammetry of CT and HQ was investigated in Tris buffer (pH 9.0), phosphate buffered saline buffer (pH 7.4), and acetate buffer (pH 4.5). Especially in Tris buffer, the anodic peak potential of CT is much lower than that of HQ, resulting in a large difference between two peak potentials (ca. 0.4 V). The difference allows the selective determination of CT in the presence of excess HQ. The anodic current of CT is amplified using CT redox cycling by hydrazine, which also helps to stabilize CT and HQ in Tris buffer for several hours. The detection limits of CT in Tris buffer containing 0.1 mM HQ are 1 μM and 10 μM in the presence and absence of hydrazine, respectively.
A Simplified Radioimmunoassay of Plasma Aldosterone1 (1973)

Radioimmunoassay of plasma aldosterone has been simplified by the elimination of the chromatographic purification step. A neutral plasma extract is subjected to water/toluene partition and oxidation with periodic acid and the neutral etiolactone product assayed with an aldosterone antiserum which cross-reacts with the etiolactone. Aldosterone concentrations in human plasma determined by this procedure agree with values obtained by other methods.
Body Size and Risk of Breast Cancer (1997)

The relation between body size and breast cancer remains uncertain, particularly with regard to differences between pre- and postmenopausal women. The authors examined whether height, weight, body mass index, and weight change were associated with breast cancer risk among pre- and postmenopausal women. This population-based case-control study included women aged 20–74 years (n = 6,548) who were diagnosed with invasive breast cancer during 1988–1991 in Maine, Massachusetts, New Hampshire, and Wisconsin. Similarly aged control women (n = 9,057) were selected at random from driver's license files and Heaith Care Financing Administration files. Height, weight, and information on other breast cancer risk factors were ascertained by telephone interview, and logistic regression was used to estimate murtivariate-adjusted odds ratios and 95% confidence intervals. Among premenopausal women, the adjusted odds ratio for the upper quintile group of height relative to the lowest was 1.36 (95% confidence interval (Cl) 1.05–1.76). The heaviest premenopausal women had a lower risk (odds ratio (OR) = 0.87, 95% CI 0.70–1.10). Among postmenopausai women, the adjusted odds ratios were higher for the upper quintile categories of both height (OR = 1.27, 95% CI 1.11–1.45) and weight (OR = 1.57, 95% CI 1.37–1.79). Weight gain since ages 18 and 35 years was associated with increased postmenopausai breast cancer risk, and risk was lower in women wtio had lost weight. These findings suggest that programs to avoid weight gain merit study as a means to reduce risk of postmenopausai breast cancer. Am J Epidemiol 1997; 145: 1011 –19.
Primaclade—a flexible tool to find conserved PCR primers across multiple species (2004)

Primaclade is a web-based application that accepts a multiple species nucleotide alignment file as input and identifies a set of polymerase chain reaction (PCR) primers that will bind across the alignment. Primaclade iteratively runs the Primer3 application for each alignment sequence and collates the results. Primaclade creates an HTML results page that recaps the original alignment, provides a consensus sequence and lists primers for each alignment area, with primers color-coded to reflect the level of degeneracy in the primer.
Corpo Editorial e Avaliadores Ad hoc (2016)

Corpo Editorial e Avaliadores Ad hoc da REMAT, v. 2, n. 1, 2016.
Self-consistent calculation of nuclear rotations:: The spectrum of 80Sr (1988)

info:eu-repo/semantics/published
Electron diffraction patterns from scroll nanotubes: interpretation peculiarities (2014)

This article describes the structure of scroll nanotubes and associated diffraction effects in the context of electron diffraction from a single nanotube. It is suggested that the effect of multiple equidistant splitting of diffuse reflections into cone series be used as a diffraction criterion for conical scroll structure identification. For cylindrical scroll structure determination, the effect of the azimuthal dependence of the intensity of basal diffraction spots is proposed as a characteristic sign. Good agreement between specific oscillations in both theoretical and experimental profiles of basal diffraction spots was achieved. It was also established that there are special values of chiral angles in cylindrical scroll nanotubes that lead to order enhancement in their structure along the tube axis, whereas even a small deviation from these angles results in degradation of diffraction conditions for some diffraction spots in the diffraction pattern.
Two optical coupled high-speed CCD cameras for comprehensive image analysis (2003)

A high speed camera has been developed by Optronis GmbH for recording fast moving objects with high spatial resolution, high repetition rate and short exposure time. The camera offers variable frame to frame delay times. The structural principal and performances of the instrument are discussed.
Electronic properties of two-dimensional hexagonal germanium (2010)

The electronic properties of two-dimensional hexagonal germanium, so called germanene, are investigated using first-principles simulations. Consistent with previous reports, the surface is predicted to have a “poor” metallic behavior, i.e., being metallic with a low density of states at the Fermi level. It is found that biaxial compressively strained germanene is a gapless semiconductor with linear energy dispersions near the K points—like graphene. The calculated Fermi velocity of germanene is almost independent of the strain and is about 1.7×106 m/s, quite comparable to the value in graphene.
The Metabolism of Chicken Tumors<xref ref-type="fn" rid="fn1"><sup>1</sup></xref> (1941)

Journal Article The Metabolism of Chicken Tumors Get access Dean Burk, Dean Burk senior chemist National Cancer Institute, National Institute of Health, United States Public Health Service Search for other works by this author on: Oxford Academic PubMed Google Scholar Herbert Sprince, Herbert Sprince Parker research fellow Search for other works by this author on: Oxford Academic PubMed Google Scholar Juliet M. Spangler, Juliet M. Spangler research assistant Department of Biochemistry Search for other works by this author on: Oxford Academic PubMed Google Scholar Elvin A. Kabat, Elvin A. Kabat instructor in pathology Search for other works by this author on: Oxford Academic PubMed Google Scholar Jacob Furth, Jacob Furth associate professor of pathology Department of Pathology Cornell University Medical College Search for other works by this author on: Oxford Academic PubMed Google Scholar Albert Claude Albert Claude associate Rockefeller Institute for Medical Research Search for other works by this author on: Oxford Academic PubMed Google Scholar JNCI: Journal of the National Cancer Institute, Volume 2, Issue 3, December 1941, Pages 201–240, https://doi.org/10.1093/jnci/2.3.201 Published: 01 December 1941
Magnetic Self-Assembly with Unique Rotational Alignment (2015)

The majority of flexible electronics applications require integration of thin chips on low-cost polymer substrates, with a high volume manufacturing fashion. However, handling thin parts (below< 100?m) with contact-based micro-assembly techniques is challenging due to the strong adhesion forces at micro-scale. This situation slows down the traditional assembly methods, i.e. pick-and-place machines: In contact based placement, the chip is squeezed between the pick-and-place tool and the substrate and the force applied to release the chip, which should compensate the strong adhesion, might damage the delicate chip. This thesis focuses on developing a magnetic self-assembly method for high precision placement of parts with micro-scale thicknesses, i.e. ultra-thin chips (UTCs), without a direct mechanical contact. The chips are manipulated by the magnetic interactions between an externally applied magnetic field and nickel contact pads present on the chips. The method enables aligning the chips into a unique rotation by using shape matching between the asymmetric arrangement of nickel features on the chip and the gradient in the applied field.
Leg flow-mediated arterial dilation in elderly patients with heart failure and normal left ventricular ejection fraction (2006)

elderly patients with HFNEF do not exhibit marked reduction in leg FMAD. These data suggest that mechanisms other than impaired femoral arterial endothelial function contribute to the severe exercise intolerance experienced by these individuals.
Training Neural Network Controllers Using Control Barrier Functions in\n the Presence of Disturbances (2020)

Control Barrier Functions (CBF) have been recently utilized in the design of\nprovably safe feedback control laws for nonlinear systems. These feedback\ncontrol methods typically compute the next control input by solving an online\nQuadratic Program (QP). Solving QP in real-time can be a computationally\nexpensive process for resource constraint systems. In this work, we propose to\nuse imitation learning to learn Neural Network-based feedback controllers which\nwill satisfy the CBF constraints. In the process, we also develop a new class\nof High Order CBF for systems under external disturbances. We demonstrate the\nframework on a unicycle model subject to external disturbances, e.g., wind or\ncurrents.\n
Dose response of a storage phosphor system for intraoral radiography (1999)

Since the gray levels of the final radiographs are directly proportional to the amplified signal, the gray levels may be used as a relative measure of the exposure in the Digora(R) system provided that they are subtracted from the maximum value of 255.