gebhart/patrepeval huggingface dataset:
Correction to Retinal−Salinixanthin Interactions in Xanthorodopsin: A Circular Dichroism (CD) Spectroscopy Study with Artificial Pigments (2009)

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to Retinal−Salinixanthin Interactions in Xanthorodopsin: A Circular Dichroism (CD) Spectroscopy Study with Artificial PigmentsElena Smolensky and Mordechai Sheves*Cite this: Biochemistry 2009, 48, 38, 9170Publication Date (Web):September 8, 2009Publication History Received27 August 2009Published online8 September 2009Published inissue 29 September 2009https://pubs.acs.org/doi/10.1021/bi901499zhttps://doi.org/10.1021/bi901499zcorrectionACS PublicationsCopyright © 2009 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views432Altmetric-Citations-LEARN 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 PDF (555 KB) Get e-AlertscloseSUBJECTS:Chirality,Dyes and pigments,Optical properties,Spectroscopy Get e-Alerts
ChemInform Abstract: A One‐Pot Efficient and Fast Hiyama Coupling Using Palladium Nanoparticles in Water under Fluoride‐Free Conditions. (2008)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Time resolved emission spectroscopy investigations of pulsed laser ablated plasmas of ZrO<sub>2</sub>and Al<sub>2</sub>O<sub>3</sub> (2006)

With the rising trend of synthesizing ultra thin films and/or quantum-confined materials using laser ablation, optimization of deposition parameters plays an essential role in obtaining desired film characteristics. This paper presents the initial step of plasma optimization study by examining temporal distribution of the plasma formation by pulsed laser ablation of materials. The emitted spectra of ZrO2 and Al2O3 are obtained ∼3mm above the ablated target to derive the ablated plasma characteristics. The plasma temperature is estimated to be at around 2.35 eV, with electron density of 1.14 × 1016 (cm−3). Emission spectra with different gate delay time (40-270 ns) are captured to study the time resolved plume characteristics. Transitory elemental species are identified.
Anti-inﬂammatory activity (2002)

Inflammation is the body's first response to infection or injury and is critical for both innate and adaptive immunity. It can be considered as part of the complex biological response of vascular tissues to harmful stimuli such as pathogens, damaged cells, or irritants. The search for natural compounds and phytoconstituents that are able to interfere with these mechanisms by preventing a prolonged inflammation could be useful for human health. Here, the anti-inflammatory properties of plant-based drugs are put together with both in vitro and acute (carrageenan, egg albumin and croton oil) and chronic (cotton pellet) in vivo models.
The Efficiency of the Market for Single-Family Homes (1988)

Tests of weak-form efficiency of the market for single family homes are performed using data on repeat sales prices of 39, 210 individual homes, each for two sales dates. Tests were done for Atlanta, Chicago, Dallas, and San Francisco/Oakland for 1970-86. While evidence for seasonality in real housing prices is weak, we do find some evidence of inertia in housing prices. A city-wide real log price index change in a given year tends to be followed by a city-wide real log price index change in the same direction (and between a quarter to a half as large in magnitude) in the subsequent year. However, the inertia cannot account for much of the variation in individual housing real price changes. There is so much noise in individual housing prices relative to city-wide price index changes that the R[squared] in forecasting regressions for annual real price change in individual homes is never more than .04.
Review Article: The New Concept of Interventional Heart Failure Therapy—Part 1: Electrical Therapy, Treatment of CAD, Fluid Removal, and Ventricular Support (2010)

Congestive heart failure is a chronic and debilitating disease responsible for high cardiac morbidity and mortality in the world and is associated with more than 290 000 deaths in the United States each year. Recent advances in heart failure therapy target many of the mechanical and structural aspects of heart failure that are not addressed by drug-based therapies; these include abnormalities in electrical conduction, coronary artery or valvular architecture, and in ventricular size and shape. To target these abnormalities, newer therapies have largely been mechanical and device-based in nature and can be collectively described as interventional therapy. Interventional therapy includes the use of interventional medical therapy, electrical-based devices to augment ventricular function, catheterization-based devices for the treatment of underlying coronary artery disease and valvular disease, machines for the removal of excess fluid, mechanical pumps to assist the ventricles, surgical techniques aimed at reshaping the ventricles, the use of tissue therapies such as stem cell transplantation or complete heart transplant, palliative care, and self-care. This article is the first in a 2-part series that will review interventional heart failure therapy and present the most recent data supporting its use.
Characterization of Joule heating in structured electric field environments (2001)

We have recently performed a detailed characterization of ion Joule heating perpendicular to an axial magnetic field in the laboratory in a simulated ionospheric plasma environment which contains localized electric field structuring. Since Joule heating is often regarded as an important mechanism contributing to energization of outflowing heavy ions observed by higher‐altitude auroral satellites, this work has particular relevance to space physics issues, and, to our knowledge, has not been investigated systematically in a controlled environment. Since transverse (to B ) ionospheric electric fields are often spatially and temporally structured, with scale lengths often as small as an ion gyroradius, the ability to systematically vary the spatial extent and magnitude of an electric field region and to observe the effect on ion energy is important. The experiment makes use of a concentric set of separately biasable ring anodes which generate a radial electric field with controllable scale length perpendicular to an ambient axial magnetic field. Joule heating results from ion‐neutral collisions occurring within this transverse, dc electric field. Until there is sufficient neutral pressure to raise the ion‐neutral collision frequency ( v in ) to an observable Joule heating threshold, ion cyclotron wave heating, which is induced by shear in E × B rotation, can be the primary channel for ion energization. We have discussed in earlier papers the conditions under which this occurs, and we have treated the transition between the two forms of ion heating. We concentrate primarily in this work on constructing the fields themselves and on the relationship between the subsequent collisional heating and the Pedersen conductivity as an initial indication of the validity of the measurement results. We are able to demonstrate that measurable heating is produced by even relatively small scale structures of the order of the ion gyroradius. In addition, we show that measured heating is consistent with predictions of Joule heating as a function of ion‐neutral collisions. Finally, this work can have major implications for ionospheric studies where large‐scale electric fields are often assumed in the calculation of Joule heating.
Anwendungen der Wavelet-Transformation (1998)

Zentrales Anliegen der Signalverarbeitung ist es, aus einem Signal s ∈ L2(IR) spezifische Information zu extrahieren, z.B. das Auftreten vordefinierter Muster, periodischer Anteile, Sprünge, Unregelmäßigkeiten o. ä. Die Wavelet-Transformation wird immer dann einen Beitrag zur Beantwortung dieser Fragen leisten können, wenn die gesuchten Phänomene eine Multi-Skalen-Struktur aufweisen. Typische Beispiele sind Kanten, Sprünge oder lokal variierende Differenzierbarkeitsordnungen, die sich über das asymptotische Verhalten der Wavelet-Transformation leicht erkennen lassen. Demgegenüber ist eine Lokalisierung von Unstetigkeitsstellen mit Hilfe der klassischen Fourier-Transformation kaum möglich. In diesen Bereich fällt die Analyse der Riemannschen Funktion, deren Differenzierbarkeit an bestimmten Punkten durch eine Wavelet-Analyse nachgewiesen werden konnte, vgl. Seite 82.
Palladium‐Catalyzed, Carboxylic Acid Assisted Allylic Substitution of Carbon Nucleophiles with Allyl Alcohols as Allylating Agents in Water. (2003)

Abstract For Abstract see ChemInform Abstract in Full Text.
THE CLINICAL APPLICATION OF ALKALINE PHOSPHATASE ELECTROPHORESIS (1967)

Journal Article THE CLINICAL APPLICATION OF ALKALINE PHOSPHATASE ELECTROPHORESIS Get access M.A. NEWTON M.A. NEWTON From the Metabolic Unit, University College HospitalLondon, W.C. 1 Search for other works by this author on: Oxford Academic PubMed Google Scholar QJM: An International Journal of Medicine, Volume 36, Issue 1, January 1967, Pages 17–28, https://doi.org/10.1093/oxfordjournals.qjmed.a067101 Published: 01 January 1967 Article history Received: 02 April 1966 Published: 01 January 1967
Reputation rating system based on past behavior of evaluators (2003)

Many existing rating systems for goods or services simply total the number of good and bad evaluations reported by the consumers when generating the ratings. These systems, however, make it difficult to create really reliable reports since there is no incentive for the evaluators to provide accurate or truthful reports. This paper proposes to introduce an index that represents the trust we can place on the evaluator. This index increases if the evaluator's past estimation of the reputation of goods or service is subsequently found to be true. An evaluator who earns a higher index score has more impact on the rating system. This mechanism generates fairer and more objective ratings.
In-vivo imaging of the palisades of Vogt and the limbal crypts with sub-micrometer axial resolution optical coherence tomography (2017)

A research-grade OCT system was used to image <i>in-vivo</i> and without contact with the tissue, the cellular structure and microvasculature of the healthy human corneo-scleral limbus. The OCT system provided 0.95 µm axial and 4 µm (2 µm) lateral resolution in biological tissue depending on the magnification of the imaging objective. Cross-sectional OCT images acquired tangentially from the inferior limbus showed reflective, loop-like features that correspond to the fibrous folds of the palisades of Vogt (POV). The high OCT resolution allowed for visualization of individual cells inside the limbal crypts, capillaries extending from the inside of the POV's fibrous folds and connecting to a lateral grid of micro-vessels located in the connective tissue directly below the POV, as well as reflections from individual red blood cells inside the capillaries. Difference in the reflective properties of the POV was observed among subjects of various pigmentation levels of the POV. Morphological features observed in the high resolution OCT images correlated well with histology. The ability to visualize the limbal morphology and microvasculature <i>in-vivo</i> at cellular level can aid the diagnostics and treatment of limbal stem cell dysfunction and dystrophies.
A formal approach to self-configurable swarm-based space-exploration systems (2010)

Intelligent swarms draw their inspiration from biology where many simple entities act independently, but when grouped, they appear to be highly organized. NASA is currently investigating swarm-based technologies for the development of prospective exploration missions to explore regions of space where a single large spacecraft would be impractical. The main emphasis of this research is to develop algorithms and prototyping models for self-managing swarm-based space-exploration systems. This article presents our work on formally modeling self-configuring behavior in such systems. We present a formal model for team formation based on Partially Observable Markov Decision Processes and Discrete Time Markov Chains along with formal models for planning and scheduling.
Relation of vessel wall shear stress to atherosclerosis progression in human coronary arteries. (1993)

The purpose of this study was to determine the relation between vessel wall shear stress and the rate of atherosclerosis progression. Quantitative angiography was used to calculate the change in coronary arterial diameter over 3.0 years in patients enrolled in the Harvard Atherosclerosis Reversibility Project pilot study (n = 20 arterial segments). Vessel wall shear stress was calculated by means of a validated finite-difference model of the Navier-Stokes' equation that assumes a coronary flow rate of 8 ml/sec. The correlation between vessel wall shear stress and the change in arterial diameter at multiple points (mean, 70) along the length of the artery was then calculated for each of the 20 segments with a focal stenosis. In 15 of the 20 arterial segments there was a significant correlation (p < 0.05) between low shear stress and an increased rate of atherosclerosis progression. A Fisher's z transformation was then used to combine the correlation coefficients from all 20 segments. Low shear stress was significantly correlated (z = 0.37 +/- 0.00074, p < 0.0001) with an increased rate of atherosclerosis progression. This serial quantitative evaluation of human coronary arteries is consistent with previous data that have suggested that low shear stress promotes atherosclerosis progression. Variations in local vessel wall shear stress may explain the previously reported near-independent rate of atherosclerosis progression in multiple lesions within the same patient despite exposure to the same circulating lipoprotein values and systemic hemodynamics.
Identification and characterization of the peroxiredoxin gene family in chickens (2005)

Peroxiredoxin (PRX) is a crucial antioxidant protein that protects against endogenously produced peroxides in prokaryotes to eukaryotes. To date, 6 different isoforms have been identified in mammals. In this study, we describe the first members of the PRX protein family to be characterized in Chicken. Through bioinformatics analysis, we observed that at least 4 different classes of PRX protein have been evolutionarily conserved in chickens. Furthermore, in vitro functional assays of the candidate chicken PRX proteins demonstrated that they had levels of antioxidant activity similar to those of the mammalian enzymes. The expression patterns of the PRX transcript in several chicken tissues were not tissue specific, suggesting that they might play an essential role as a housekeeping gene in all tissues to protect against oxidative damage. In conclusion, the sequences of the putative members of this functional gene family in chickens could be effectively retrieved in silico through bioinformatics analysis, and the functionality of their gene products evaluated by in vitro comparative assay.
Site-directed mutagenesis of monofunctional chorismate mutase engineered from the E. coli P-protein (1996)

Analysis of the active-site residues of a fully functional chorismate mutase representing the N-terminal 113 amino acids of the Escherichia coli P-protein suggests that Lys39 and Gln88 play critical roles in catalyzing the rearrangement of chorismate to prephenate. Five site-directed mutants at these positions have been constructed in which Lys39 was replaced with Arg, Asn, and Gln, and Gln88 was replaced with Arg and Glu. Although the Gln88Arg plasmid failed to produce detectable cross-reacting proteins in E. coli, the other four plasmids were expressed, and the mutant proteins purified to homogeneity. Their structures were similar to wild type enzyme, as indicated by circular dichroism spectra, with Lys39Gln showing a small deviation. In accordance with predictions, all mutations result in major loss of catalytic activity at pH 7.8. However, activity of the Gln88Glu mutant at pH 4.5 exceeded wild-type EcCM. Implications for the mechanism of mutase catalysis are discussed.
3310 Construction of Motorcycle Riding Simulator for Two-wheeled Vehicle with stereoscopic Vision : The effect on Speed feeling and Reality by Spherical Screen (2013)

This study deals with a development and evaluation of a motorcycle simulator to analyze rider's control algorithm. This paper described about the evaluation for a visual system configuration as underlying data of such simulator construction. We had subjective test using a flat screen to evaluate for a visual scene of the simulator. And, it is concluded that wide-field screen vertical view angle and stereoscopic video projector are effective. In addition, using these results, a new spherical screen system using 3D projectors is constructed. The motorcycle simulator will be improved using this system.
Birds exploit herbivore‐induced plant volatiles to locate herbivorous prey (2013)

Arthropod herbivory induces plant volatiles that can be used by natural enemies of the herbivores to find their prey. This has been studied mainly for arthropods that prey upon or parasitise herbivorous arthropods but rarely for insectivorous birds, one of the main groups of predators of herbivorous insects such as lepidopteran larvae. Here, we show that great tits (Parus major) discriminate between caterpillar-infested and uninfested trees. Birds were attracted to infested trees, even when they could not see the larvae or their feeding damage. We furthermore show that infested and uninfested trees differ in volatile emissions and visual characteristics. Finally, we show, for the first time, that birds smell which tree is infested with their prey based on differences in volatile profiles emitted by infested and uninfested trees. Volatiles emitted by plants in response to herbivory by lepidopteran larvae thus not only attract predatory insects but also vertebrate predators.
Nanoengineering of photonic crystal fibers for supercontinuum spectral shaping (2006)

Supercontinuum generation using picosecond pulses pumped into cobweb photonic crystal fibers is investigated. Dispersion profiles are calculated for several fiber designs and used to analytically investigate the influence of the fiber structural parameters (core size and wall thickness) on the location of the Stokes and anti-Stokes bands and gain bandwidth. An analysis shows that the Raman effect is responsible for reducing the four-wave mixing gain and a slight reduction in the corresponding frequency shift from the pump, when the frequency shift is much larger than the Raman shift. Using numerical simulations we find that four-wave mixing is the dominant physical mechanism for the pumping scheme considered, and that there is a trade-off between the spectral width and the spectral flatness of the supercontinuum. The balance of this trade-off is determined by nanometer-scale design of the fiber structural parameters. It is also shown that the relatively high loss of the nonlinear fiber does not significantly affect the supercontinuum generation.
Crystalline lens dispersion (1981)

The spectral dispersions of rabbit, rat, pigeon, and human crystalline lens material have been measured with a Pulfrich refractometer. The refractive indices all increase rapidly at the violet end of the spectrum so tat the chromatic aberrations of the eyes of these species cannot be derived adequately from Cornu's formula, as had previously been assumed.
Efficient Epoxidation of Electron-Deficient Olefins with a Cationic Manganese Complex (2003)

The complex [MnII(R,R-mcp)(CF3SO3)2] is an efficient and practical catalyst for the epoxidation of electron-deficient olefins. This catalyst is capable of epoxidizing olefins with as little as 0.1 mol % catalyst in under 5 min using 1.2 equiv of peracetic acid as the terminal oxidant. A wide scope of substrates are epoxidized including terminal, tertiary, cis and trans internal, enones, and methacrylates with >85% isolated yields.
Design methodology for a novel multifunction laparoscopic tool: engineering for surgeons' needs. (2007)

In minimally invasive surgery (MIS), the small number of incisions necessitates the insertion and removal of many different instruments to complete a given procedure. Using the technique of functional decomposition, it was found that some functions are repeated for different instruments, such as positioning and actuation of the tool's tip. Axiomatic design principles motivated a redesign of current technology to consolidate these repeated functions into a single multifunction tool. The investigators surveyed a laparoscopic surgeon to obtain functional requirements and their relative importance in MIS. These requirements were used in a Quality Function Deployment analysis to design a laparoscopic tool which combined the functionalities of multiple tools into one handheld device, and allowed the integration of the surgeon's needs into the design. This novel tool eliminates the need to remove and reinsert multiple tools during a surgical procedure and decreases the OR time, monetary cost and trauma to the patient.