gebhart/patrepeval huggingface dataset:
Surface ion implantation induced by laser-generated plasmas (2010)

Surface ion implantation induced by laser-generated plasmas was investigated using the PALS Prague laser facilities. Cu, Ge, Ag and Ta ions were obtained through the ablation of solid targets in vacuum by means of 1015 W/cm2 laser pulses. Energetic ions (∼ 0.1–1 MeV) were implanted on different substrate surfaces (Si, C, Al, Ti and polyethylene) placed at different distances from the target and angles from the normal to the target surface. In order to increase the ion dose, implantation was performed by using more laser shots in the same experimental conditions. An ion energy analyzer was employed for online measurements of the ion energies and charge states produced by the laser plasma. Off-line Rutherford backscattering spectroscopy (RBS) of alpha particles allowed us to determine the ion depth profiles, the ion energies and the ion amount implanted on the substrate surfaces. RBS spectra have shown typical implanted deep profiles only for substrates placed along the normal to the target surface at which the ion energy is maximum. At large angles, no implantation occurs and ions are only deposited. At a high dose, the multi-energetic ion implantation can be used to modify the physical and chemical properties of the implanted layer surfaces.
Characteristics of atmospheric-pressure, radio-frequency glow discharges operated with argon added ethanol (2007)

Rf, atmospheric-pressure glow discharge (APGD) plasmas with bare metal electrodes have promising prospects in the fields of plasma-aided etching, thin film deposition, disinfection and sterilization, etc. In this paper, the discharge characteristics are presented for the rf APGD plasmas generated with pure argon or argon-ethanol mixture as the plasma-forming gas and using water-cooled, bare copper electrodes. The experimental results show that the breakdown voltage can be reduced significantly when a small amount of ethanol is added into argon, probably due to the fact that the Penning ionization process is involved, and a pure α-mode discharge can be produced more easily with the help of ethanol. The uniformity of the rf APGDs of pure argon or argon-ethanol mixtures using bare metallic electrodes is identified with the aid of the intensified charge coupled device images.
Intracellular Phospholipase Activities of Tetrahymena pyriformis1 (1985)

Phospholipase activity was studied in the protozoan Tetrahymena pyriformis NT-1 by using exogenous phosphatidylethanolamine and phosphatidylcholine. Several phospholipase activities were found in Tetrahymena homogenates. They were distinguished with respect to pH optimum, activity dependence on Ca2+, substrate specificity and positional specificity. Ca2+-Dependent phospholipase activity had an optimal pH around 9 and gave rise to free fatty acid and lysophospholipid. This enzyme hydrolyzes phosphatidylethanolamine but not phosphatidylcholine. The alkaline phospholipase with A1 activity was located mainly in the surface membrane (pellicle fraction). The enzyme activity had a pH optimum ranging from 8 to 9, and required 2 mM CaCl2 for the maximal activity. All detergents tested inhibited the enzyme activity. Ca2+-Independent phospholipase activity had an optimal pH from 4 to 5 and gave rise to free fatty acid, lysophospholipid, diacylglycerol, and monoacylglycerol. We concluded that there are at least three phospholipase in Tetrahymena homogenates, i.e., alkaline phospholipase A and acidic phospholipases A and C.
Mechanism of Stabilization of Some Polypropylene Ultraviolet Stabilizers (1974)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of Stabilization of Some Polypropylene Ultraviolet StabilizersJ. S. Zannucci and G. R. LappinCite this: Macromolecules 1974, 7, 3, 393–394Publication Date (Print):May 1, 1974Publication History Published online1 May 2002Published inissue 1 May 1974https://pubs.acs.org/doi/10.1021/ma60039a023https://doi.org/10.1021/ma60039a023research-articleACS PublicationsRequest reuse permissionsArticle Views75Altmetric-Citations6LEARN 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
<title>Electro-optomechanical design of fiber optic smart structures</title> (1994)

The field of fiber optic smart structures has recently been an active area of research with many important advances in sensors, manufacturing and structural reliability. These areas of fiber optic smart structures have progressed independently to the level that separate design criteria are beginning to be formulated. As has been emphasized time and again, fiber optic smart structures is a multidisciplinary field that requires an integrated approach to system design and testing. This paper describes one such integrated design approach for composite material-based fiber optic smart structures. Both design for sensor performance and structural reliability are considered. The design for sensor performance presents a rational design philosophy for choosing the appropriate combination of sensors and demodulators to faithfully record the target strain in a smart structure. The design for structural reliability provides a rational approach for ensuring that the structure will support its design loads.
Organizational encounters with risk: an introduction (2005)

Contemporary discussions of risk routinely point to the paradox of science and technology. On the one hand great advances have been made in health and welfare; on the other hand such advances also give rise to new problems and vulnerabilities, e.g. the benefits of increased longevity in Western societies have given rise to difficulties in pension and social security systems. This is the essence of Beck's (1992) famous 'risk society' thesis; the risks we face today are largely 'manufactured', potentially fatal by-products of an industrial machine which demands a new politics to control it. In this collection of essays, we retain a focus on this paradox but we shift the analytical focus from science and technology to organizations and organizing.
CNN-Based Camera-less User Attention Detection for Smartphone Power Management (2019)

The many sensors hosted by mobile electronic devices are commonly used to recognize user activities and context, in order to provide new functionalities, such as tracking physical activity and sleep cycles. Despite its potential, such context recognition is only employed for power management purposes in very specific scenarios (e.g. in-pocket detection). In this work we present a novel context recognition system able to reliably identify whether a mobile device is not being looked at, and to consequently trigger power management actions such as turning off the display and moving to suspended mode. Our method takes as input the readings from common low-power sensors present in virtually all mobile devices and classifies them using a Convolutional Neural Network. Most importantly, the power-hungry camera sub-system is not used, resulting in an extremely energy-efficient detection strategy. Results show that our system is able to identify scenarios in which a device is not being used with 95.6% accuracy, thus reducing the energy overheads by 91% compared to a standard timeout-based power management and by 58% compared to a system relying on the camera.
Action of Vasodilating Drugs on Small and Large Arteries of Hypertensive Patients (1983)

We studied blood pressure, arterial diameter, and blood flow of the brachial artery in patients with sustained essential hypertension before and after administration of the vasodilating drugs nitroglycerin, captopril, dihydralazine, diltiazem, and isosorbide dinitrate (ISDN). The diameter and the blood flow of the brachial artery were measured with a pulsed Doppler device which allowed the angle between the ultrasound beam and the vessel axis to be determined with a precision better than 2%. Nitroglycerin and captopril decreased blood pressure slightly but increased arterial diameter markedly. Dihydralazine, diltiazem, and ISDN decreased blood pressure similarly and significantly and also reduced forearm vascular resistance. Dihydralazine reduced arterial diameter (p less than 0.001), but did not change brachial blood flow. Diltiazem and ISDN increased the arterial diameter markedly (p less than 0.001 and p less than 0.01, respectively), but only the former increased brachial blood flow. We conclude that antihypertensive drugs that dilate small arteries can either reduce (dihydralazine) or increase (nitroglycerin, captopril, diltiazem, ISDN) the caliber of large peripheral arteries and thus have different effects on peripheral blood flow.
New distribution records of the genus Neotroponiscus Arcangeli, 1936 (Isopoda: Oniscidea: Bathytropidae) from Southeastern and Southern Brazil (2013)

Three species of the terrestrial isopod genus Neotroponiscus Arcangeli, 1936 have new records presented in this paper. Neotroponiscus lenkoi Lemos de Castro, 1970, previously known only from the state of São Paulo, is recorded for the first time from the state of Rio de Janeiro. Two other species, N. argentinus (Giambiagi de Calabrese, 1939) and N. lobatus Lemos de Castro, 1970 have complementary records from the states of Santa Catarina and Espírito Santo, respectively. A distribution map is also presented.
Volume regeneration after right liver donation (2004)

After right hepatectomy with the middle hepatic vein trunk for a graft, the venous outflow in segment IV is disturbed. There are limited data, however, regarding the effect of middle hepatic vein deprivation on liver regeneration or functional recovery. Living donors who underwent right hepatectomy with preservation of the middle hepatic vein (Group A, n = 58) and those deprived of the middle hepatic vein (Group B, n = 13) were reviewed. When the donor was under 50 years old and the remnant left liver was estimated to be more than 35% of the whole liver, right liver graft harvesting with the middle hepatic vein trunk was considered. Volume regeneration of segments I-III, segment IV, and overall liver volume was assessed at the third postoperative month using computed tomography. The regeneration rate of segment IV was significantly impaired in Group B donors compared with that in Group A donors (125% vs. 45%, P = 0.008). In contrast, the regeneration rate of segments I -III was significantly higher than that in Group A (208% vs. 263%, P = 0.004). There was no significant difference in the regeneration rate of the whole left liver or functional recovery between groups. Multivariate analysis revealed that the resection type (group) was a significant predictive factor for the regeneration rate of segments I-III and segment IV. When deprived of the middle hepatic vein, liver regeneration of segment IV was impaired but was compensated for by the regeneration of segments I-III. In conclusion, extended right hepatectomy can be safely performed with careful preoperative consideration using these criteria.
Channel selection and seizure detection using a statistical approach (2016)

This paper proposes a novel patient-specific approach to channel selection and seizure detection based on estimating the histograms of multi-channel scalp electroencephalography (sEEG) signals. It consists of two main phases: training and testing. In the training phase, the signal is segmented into non-overlapping 10-second segments, with five histograms estimated for each segment. These histograms have multiple bins that are studied individually as random variables. Based on the histograms of these random variables for different signal activities and on predefined detection and false alarm probability thresholds, bin(s) are selected form certain channel distributions for seizure detection. In selecting the training hours, a leave-one-out cross-validation strategy is adopted. In the testing phase, those channel(s)-histogram(s)-bin(s) are used to classify each segment as ictal or non-ictal. This sequence is filtered with a moving average filter and compared to a patient-specific detection threshold. This method was evaluated using 309.9 h of sEEG including 26 seizures of five patients. It achieved an average sensitivity of 97.14% and an average specificity of 98.58%.
Daedophamide, a Cytotoxic Cyclodepsipeptide from a Daedalopelta sp. Sponge Collected in Indonesia (2017)

A new cyclodepsipeptide, daedophamide (1), has been isolated from a Daedalopelta sp. marine sponge collected from Alor Island (Indonesia). The planar structure of 1 was assigned on the basis of extensive 1D and 2D NMR spectroscopy and mass spectrometry. Daedophamide (1) contains 11 amino acid residues and an amide-linked 3-hydroxy-2,4,6,8-tetramethylnonanoic acid (Htemna). The amino acid constituents were identified as l-Leu, N-Me-l-Gln, d-Arg, d-Asp, d-allo-Thr, l-Pip, d-Ala, d-Ser, 3,4-dimethyl-Gln, O-MeThr, and 4-amino-7-guanidino-2,3-dihydroxyheptanoic acid (Agdha). The absolute configurations of eight of the amino acid residues in 1 were determined by application of the Marfey's method after acid-catalyzed hydrolysis, with the relative configurations of the remaining three amino acid residues and the Htemna unit being assigned by comparison of the NMR data with those reported for other similar peptides. Compound 1 displayed strong cytotoxic activity against a panel of four human tumor cell lines with GI<sub>50</sub> values in the submicromolar range.
Development of a green fluorescence protein (GFP)‐based bioassay for detection of antibiotics and its application in milk (2020)

Antibiotics are one of the most widely used types of drugs in pharmaceutics. However, efficiency of these drugs has decreased recently owing to the threat of antibiotic resistance. One of the important factors causing antibiotic resistance is the excessive use of antibacterials in animals. Therefore, detection of antibiotics in foods of animal origin is crucial. The aim of this study was to develop a novel whole-cell based bioassay to be used for detection of some antibiotics. Green fluorescent protein (GFP)-expressing Escherichia coli cells were used as a recognition agent, and antibiotic detection was carried out by pursuing the inhibition rate of fluorescence intensity as a result of the inhibition of viable cells by the time of progress. The performance of bioassay was tested for different antibiotics, and the obtained results showed that the developed method can be used successfully for detection of ampicillin, benzylpenicillin, gentamicin, neomycin, and tetracycline with the limit of detection (LOD) values of 3.33, 0.29, 28.00, 618.36, and 33.17 µg/L, respectively. The assay was also tested with antibiotic spiked milk samples (skimmed UHT, full-fat UHT, and whole raw milk). According to obtained recovery values, developed method was successful for all samples. The precision and bias values of the method were found between the range of 1.30% to 7.54% and -8.00% to 0.64%, respectively. The developed method, which is inexpensive and simple with detection limits in line with the regulatory limits, is promising for use in milk quality monitoring. Method has potential to be used as a screening method after comprehensive validation. PRACTICAL APPLICATION: This method could be used in animal husbandry to check whether the antibiotic prescribed for the treatment of sick animals is still present in their milk as residual. For dairy industry, detection of residual antibiotics in milk is crucial because of their inhibition effects on the fermentation processes. Therefore, the proposed method can be used for routine analysis of raw milk reception in dairy industries. In addition, it is considered to have a wide range of applications for all foods.
Nanocomposites base polymère, renforcés par des particules rigides (2004)

Les matériaux composites à base polymère montrent, dans certains cas, des comportements mécaniques spécifiques lorsque la taille des renforts particulaires rigides devient nanométrique. Il semble que cette particularité provienne du fait que les distances inter-particulaires moyennes sont alors comparables aux dimensions caractéristiques des chaînes polymères. On observe parfois des effets de renfort beaucoup plus importants que pour des composites classiques qui peuvent être attribués à l'existence de réseaux particule/macromolécule/particule ou encore de réseaux rigides de particules. Dans cette courte revue, l'effet du facteur de forme, de la fraction volumique et du procédé de mise en oeuvre sont discutés, ainsi que l'état de l'art en ce qui concerne la modélisation dans les domaines linéaire et non linéaire.
Mast cells process bacterial Ags through a phagocytic route for class I MHC presentation to T cells (1996)

The pivotal role of mast cells in allergic reactions and inflammatory processes is well established and recent studies have suggested that mast cells may also have a role in specific immune responses. Because mast cells have been shown to phagocytose and kill enterobacteria, we wished to determine whether they could also process bacterial Ags for presentation to T cells. Using a model system in which a well-characterized T cell epitope is expressed within bacteria as a fusion protein, we demonstrate in this paper that mast cells are indeed capable of processing bacterial Ags for presentation through class I MHC molecules to T cell hybridomas after phagocytic uptake of live bacteria. Processing occurs from a number of Gram-negative enterobacteria including Salmonella typhimurium and Escherichia coli. Parallel assays show that processing of the model Ag from enterobacteria by mast cells is similar in efficiency to processing by peritoneal macrophages. Consistent with earlier observations demonstrating a function of the bacterial fimbrial protein FimH in promoting bacterial binding to mast cells, the magnitude of the Ag processing response of E. coli is influenced by bacterial expression of FimH. Taken together, these observations extend the range of cell types capable of the phagocytic pathway of Ag processing and suggest that mast cells may have a previously unrecognized role in the induction of specific immune responses to bacteria.
Optimal design of restorable ATM mesh networks (2002)

This paper presents a general integer programming formulation for the capacity and flow assignment problem in self-healing ATM VP networks with path restoration. It is observed that using group VP concept can substantially reduce the restoration time with only a small increase in spare capacity cost. The economy of scale in transmission facility cost is illustrated via numerical examples.
Relative Resistances of Potato Clones in Response to New and Old Populations ofPhytophthora infestans (1996)

Potato cultivars and clones were evaluated in Washington and New York in 1993 and 1994 for field reaction to recent immigrant genotypes of Phytophthora infestans. Plants were visually evaluated at regular intervals for percent blighted foliage. Relative cultivar susceptibilities were compared by ranking the values obtained for areas under disease progress curves (AUDPC) of each line tested. Cultivar rankings in response to infection by new, immigrant isolates of P infestans were nearly identical to rankings obtained previously with isolates prevalent prior to 1990. The cultivars Norchip, Hilite, Russet Norkotah, Goldrush, Superior, and Shepody were more susceptible than Russet Burbank. White Rose and Ranger Russet were similar in susceptibility to Russet Burbank. C008-3008-1, ND-2438-7R, Kennebec, and Elba were less susceptible than Russet Burbank. Comparisons of the number of blighted tubers at harvest showed that foliage and tuber susceptibilities differed among cultivars. Shepody and Russet Norkotah tubers were most susceptible to tuber blight of those tested.
Publisher Correction: Chip-scale atomic diffractive optical elements (2019)

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Wideband, wide-angle coding phase gradient metasurfaces based on Pancharatnam-Berry phase (2017)

Abstract A new concept of the coding phase gradient metasurface (CPGM) is proposed, which is constructed using the phase gradient metasurface as the coding elements. Different from the previous coding metasurface (CM), both the coding sequences and gradient phases in the coding elements are designed to manipulate the electromagnetic (EM) wave for the CPGMs, and thus the manipulation will be more flexible. As an example, wide-band, wide-angle CPGMs with zero and non-zero phase gradient based on Pancharatnam-Berry (PB) phase are achieved using the co-polarization reflection unit cells under circularly polarized (CP) wave incidence. Both theoretically calculated and numerically simulated scattering patterns of the designed CPGMs demonstrate the expected manipulations. Additionally, two kinds of random CPGMs with different phase gradients are designed for radar cross section (RCS) reduction, and the measured RCS reveals a good accordance with the simulation.
Frequency skewed optical pulses for range detection (2007)

Frequency skewed optical pulses are generated via both a composite cavity structure in a fiberized semiconductor optical amplifier ring laser and a frequency skew loop outside the laser cavity. The composite cavity technique is similar to rational harmonic mode-locking, however it is based on cavity detuning rather than frequency detuning. These frequency skewed pulses are ideal for range detection applications since their interference results in a range dependent RF signal. The intracavity frequency skewed pulse train showed superior performance in both stability and signal quality.
The allosteric effect of inositol hexasulfate on oxygen binding by hemoglobin (1976)

Myoinositol hexasulfate (IHS) is a powerful allosteric effector of oxygen binding by hemoglobin. It binds to deoxyhemoglobin at the same site as 2,3-diphosphoglycerate (DPG) and inositol hexaphosphate (IHP) with an affinity which is intermediate between that of the two phosphate esters. The binding constant calculated from the displacement of the oxygenation curve in the presence of low concentrations of IHS is 0.9X10(6) M. The value obtained directly from the number of protons bound as a function of IHS concentration is 1.0X10(6) M. The agreement between these two independent measurements provides an experimental verification of the empirical equation, relating the oxygen affinity to the binding constants, proposed previously (Benesch, R.E., Benesch, R., Renthal, R and Gratzer, W.B. (1971), Nature (London), New Biol. 2348 174).