gebhart/patrepeval huggingface dataset:
Enabling RFID in Retail (2006)

The past two years have witnessed an explosion of interest in radio-frequency identification and supporting technologies, due primarily to their rapidly expanding use in tracking grocery products through the supply chain. Currently such applications monitor store-keeping units (SKUs) rather than individual goods, as the relatively high cost of RFID deployment and the very low profit margin of supermarket products make item-level tagging impractical. Yet, economic and technical concerns aside, it is easy to envision a supermarket in which each item is tagged with an RFID label and all shopping carts feature RFID readers. The carts could potentially include onboard computers that recognize products placed inside and that display information and promotions retrieved wirelessly from the system back end. RFID-enabled smart phones, which are commercially available today and becoming increasingly popular, could carry out the same function. Item-level deployment of RFID technology would also allow for quick checkout aisles that scan all products at once and thus eliminate queues, which are consistently reported as one of the most negative aspects of supermarket shopping. A simple extension of this system would be to embed RFID devices in consumers' loyalty or frequent-shopper cards to identify individuals. This could expedite system login and charge the shopping cost directly to the customer's account at the point of sale-unless removed at the POS, item-level tags will inevitably follow the consumer home. This scenario undoubtedly raises numerous privacy concerns.
An Efficient System for Non-transferable Anonymous Credentials with Optional Anonymity Revocation. (2001)

A credential system is a system in which users can obtain credentials from organizations and demonstrate possession of these credentials. Such a system is anonymous when transactions carried out by the same user cannot be linked. An anonymous credential system is of significant practical relevance because it is the best means of providing privacy for users. In this paper we propose a practical anonymous credential system that is based on the strong RSA assumption and the decisional Diffie-Hellman assumption modulo a safe prime product and is considerably superior to existing ones: (1) We give the first practical solution that allows a user to unlinkably demonstrate possession of a credential as many times as necessary without involving the issuing organization. (2) To prevent misuse of anonymity, our scheme is the first to offer optional anonymity revocation for particular transactions. (3) Our scheme offers separability: all organizations can choose their cryptographic keys independently of each other. Moreover, we suggest more effective means of preventing users from sharing their credentials, by introducing all-or-nothing sharing: a user who allows a friend to use one of her credentials once, gives him the ability to use all of her credentials, i.e., taking over her identity. This is implemented by a new primitive, called circular encryption, which is of independent interest, and can be realized from any semantically secure cryptosystem in the random oracle model.
The formocresol pulpotomy--the past, the present, and the future. (1978)

President Roosevelt addresses the citizens of Keokuk, Iowa. He congratulates them on their &amp;ldquo;great and beautiful state&amp;hellip;with such great natural advantages&amp;rdquo; and extends special thanks to veterans of the Grand Army of the Republic. He also speaks about General Curtis and the current problems facing the nation due to the &amp;ldquo;complexity of our industrial civilization."
Modifications of the High and Low Affinity Pituitary Domperidone-Binding Sites in Chronic Estrogenized Rats* (1983)

The effect of chronic estrogen treatment on the anterior pituitary domperidone-binding sites was studied in female rats. The rats were implanted from 1-6 months with a Silastic capsule containing 17 beta-estradiol. The Feldman analysis of [3H]domperidone binding to anterior pituitary membranes of control or estrogenized rats revealed the presence of two sites. The binding characteristics of the higher affinity site were identical for both groups (Kd of the high affinity site, 0.30-0.45 nM; maximum number of binding sites of the high affinity site, 74-95 fmol/mg protein); however, those of the lower affinity site were affected by the estrogen treatment: the Kd of the low affinity site increased from 17.4 +/- 3.2 to 41.5 +/- 9 (+/- SE) nM, and the maximum number of binding sites of the low affinity site increased from 214 +/- 22 to 343 +/- 35 fmol/mg protein. Thus, in chronic estrogenized rats, the total number of binding sites was increased by 54%. These changes, induced by chronic estrogenization, were reversible, since 2 weeks after removal of the 17 beta-estradiol pellet, the binding characteristics were no longer different from those observed in control rats. In contrast to chronic estrogen treatment, ovariectomy reduced markedly the total number of [3H]domperidone-binding sites in anterior pituitary membranes (-70%). Feldman analysis revealed that this reduction resulted from the complete disappearance of the low affinity sites in those membranes. No significant change in the binding characteristics of the high affinity site was detected in ovariectomized rats. Since estradiol induces a decrease in the anterior pituitary content of dopamine, a denervation supersensitivity-like mechanism might be responsible for the increase in pituitary domperidone-binding sites in estrogenized rats. Conversely, a hyposensitivity mechanism could be implicated in the decrease in the total number of the pituitary domperidone-binding sites in ovariectomized rats, since pituitary dopamine levels are increased in those animals. Whether the antidopaminergic properties of estrogen are also involved in this modulation after chronic estradiol treatment requires further investigation.
D-LSMA: distributed link scheduling multiple access protocol for QoS in ad-hoc networks (2005)

The paper presents a novel medium access control (MAC) protocol for QoS support in multi-hop ad-hoc wireless networks. The proposed D-LSMA (distributed link scheduling multiple access) protocol uses an extension of the 802.11 CSMA/CA procedure as the basis for a distributed link scheduling algorithm which results in dynamic TDMA-like bandwidth allocation among neighboring wireless nodes without the need for global synchronization. In addition to supporting QoS, the proposed scheduling technique also solves the "exposed node" problem in ad-hoc 802.11, thus resulting in improved throughput in many scenarios. Simulation results from an ns-2 model are presented for a 15-node random ad-hoc network. The results demonstrate significant performance improvements relative to ad-hoc 802.11, with capacity increases typically /spl sim/20% for the example considered. Also, the D-LSMA network is shown to offer far better real-time packet delay and fairness properties than 802.11, particularly under overload and heavy contention conditions.
Laser devices based on one- and two-photon pumped semiconductor core-shell quantum dots (2010)

Highly luminescent CdSe-ZnS core-shell nanocrystals are utilized as dopants within ZrO2 and HfO2 hybrid sol-gel matrices. The emission properties of these hybrid materials are studied upon one and two-photon excitation by fs laser pulses. Under these optical pumping regimes, low-threshold amplified stimulated emission is observed. Furthermore, the optical gain characteristics of these QD hybrid materials within 1D and 2D distributed feedback laser architectures are explored.
Optimization of Computational Neural Network for Its Application in the Prediction of Microbial Growth in Foods (2001)

The power of computational neural networks (CNN) for microbiological growth prediction was evaluated. The training set consisted of growth responses data from a combination of three strains of Salmonella in a laboratory medium as affected by pH level, sodium chloride concentration and storage temperature. The architecture of CNN was designed to contain three input parameters in the input layer and one output parameter in the output layer. For their optimization, algorithms were developed to prune the net connections, obtaining an improvement in the generalization and a decrease in the number of necessary patterns for the training. The standard error of prediction (%SEP) obtained was under 5% using twenty inputs to the net, and the result was significantly smaller than the one obtained using regression equations. Therefore, the usefulness of CNN for modeling microbial growth is appealing, and its improvement promises results that will be better than those obtained by other estimation methods up to now.
UNE NOUVELLE METHODE DE SURFACAGE DES EPROUVETTES EN BETON A HAUTES ET TRES HAUTES PERFORMANCES (1992)

The authors describe investigations aimed at finding a simple and effective method of surfacing samples of high and very high performance concrete in order to subject them to crushing tests of high quality. Three lines of approach are examined separately: the use of an epoxy resin mortar, an American technique consisting of interposing, between the test sample and the plates of the press, a neoprene disc confined in a metal box, and a new technique (the sand box) in which the neoprene is replaced by dry sand. These three methods are compared with the best known technique (grinding, which requires specific and costly equipment) and the conventional method for which a substitute is sought: surfacing with sulphur. The sand box is found to be the best substitute technique; the results it produces are comparable to those obtained with grinding in the case of high performance concrete (of strength between 50 and 80 MPa). Further work remains to be done to optimize the procedure and to enable the method to be standardized.
A NEW APPROACH TO THE MECHANICS OF ANISOTROPIC MULTILAYERED PLATES (1970)

New methods are developed which provide a simplified treatment of the mechanics of multilayered and strongly anisotropic plates. It includes the case where individual layers are themselves constituted by thinly laminated materials each with their own anisotropic and microelastic properties. The fundamental 'skin effect' of anisotropic solid mechanics is taken into account. The theory is derived in the context of plane strain deformations. Recurrence equations are obtained for an arbitrary number of layers and applied to plates with two and three layers. The microelastic stress-couple is evaluated for the case of laminated media. Characteristic physical features are discussed and the results are compared to a treatment based on the classical Euler-Bernouilli and Timoshenko models. (Author)
Solution and Solid-State Characterization of PbSe Precursors (2020)

The addition of lead to diphenyl diselenide in ethylenediamine (en) or pyridine (py) allowed for the observation of the solvento complexes, (en)Pb(SePh)<sub>2</sub> or (py)<sub>2</sub>Pb(SePh)<sub>2</sub>, respectively. Performing this reaction in dimethyl sulfoxide and subsequent crystallization was found to afford Pb(SePh)<sub>2</sub>. Inductively coupled plasma optical emission spectroscopy revealed a 1:2 lead to selenium ratio for all three complexes. Nuclear magnetic resonance spectroscopy confirms that Pb(SePh)<sub>2</sub> is readily solubilized by ethylenediamine, and electrospray ionization mass spectrometry supports the presence of Pb(SePh)<sub>2</sub> moieties in solution. Single-crystal X-ray diffraction analysis of the pyridine adduct, (py)<sub>2</sub>Pb(SePh)<sub>2</sub>, revealed a seesaw molecular geometry featuring equatorial phenylselenolate ligands. Crystals of Pb(SePh)<sub>2</sub> grown from dimethyl sulfoxide revealed one-dimensional polymeric chains of Pb(SePh)<sub>2</sub>. We believe that the lead(II) phenylselenolate complexes form via an oxidative addition reaction.
Resveratrol therapeutics combines both antimicrobial and immunomodulatory properties against respiratory infection by nontypeable Haemophilus influenzae (2017)

The respiratory pathogen nontypeable Haemophilus influenzae (NTHi) is an important cause of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) that requires efficient treatments. A previous screening for host genes differentially expressed upon NTHi infection identified sirtuin-1, which encodes a NAD-dependent deacetylase protective against emphysema and is activated by resveratrol. This polyphenol concomitantly reduces NTHi viability, therefore highlighting its therapeutic potential against NTHi infection at the COPD airway. In this study, resveratrol antimicrobial effect on NTHi was shown to be bacteriostatic and did not induce resistance development in vitro. Analysis of modulatory properties on the NTHi-host airway epithelial interplay showed that resveratrol modulates bacterial invasion but not subcellular location, reduces inflammation without targeting phosphodiesterase 4B gene expression, and dampens β defensin-2 gene expression in infected cells. Moreover, resveratrol therapeutics against NTHi was evaluated in vivo on mouse respiratory and zebrafish septicemia infection model systems, showing to decrease NTHi viability in a dose-dependent manner and reduce airway inflammation upon infection, and to have a significant bacterial clearing effect without signs of host toxicity, respectively. This study presents resveratrol as a therapeutic of particular translational significance due to the attractiveness of targeting both infection and overactive inflammation at the COPD airway.
Laser Driver and Analysis Circuitry Development for Quartz-Enhanced Photoacoustic Spectroscopy of NO2 for IoT Purpose (2018)

The rising effort to track local air pollution measurements require low-cost air quality sensors that provide good accuracy, long-term stability and possibly Internet of Things (IoT) connectivity. To provide such a solution and avoid cost-intensive equipment the development of a low-cost environmental sensor system was started. To measure the pollutant NO2, a quartz-enhanced photoacoustic spectroscopy (QEPAS) setup was established. A pulsed 450 nm laser diode excites NO2 molecules due to its strong absorption at this wavelength and causes a vibrational-translational relaxation, which results in an acoustic wave. The acoustic wave is detected by a quartz tuning fork (QTF) which generates a weak electrical signal proportional to the NO2 concentration. To realize this at low cost, a laser driver and an analysis circuit including a lock-in amplifier and analog-to-digital conversion were developed. We present first results, which proof the functionality of the circuitry compared to a more expensive laboratory setup.
Lanthanum(III) Triflate-Catalyzed Cyclopropanation via Intramolecular Methylene Transfer (2009)

A new method for cyclopropanation involving intramolecular methylene transfer from an epoxide to an olefin has been developed. This La(OTf)(3)-catalyzed process proceeds with good efficiency and with high stereoselectivity. A range of examples illustrating substrate scope are given along with a mechanistic rationale. Also demonstrated is an asymmetric cyclopropane synthesis that combines enantioselective epoxidation with this methylene-transfer protocol.
Fluidly Revealing Information in Fluid Documents (2000)

Fluid documents alter their layout, typography, and other graphical characteristics in order to present supporting material in the context of the primary material that it annotates. The document surface acts as a canvas in which traditionally static elements may move and change smoothly to make room for additional information. This process is managed by a four-step negotiation architecture that yields complementary layout and presentation of all elements.
Efficient Singlet‐State Deactivation of Cyano‐Substituted Indolines in Protic Solvents via CNHO Hydrogen Bonds (2007)

The photophysical properties of indoline (I) and three of its derivatives, namely, N-methylindoline (MI), 5-cyanoindoline (CI), and 5-cyano-N-methylindoline (CMI), are studied in H-donating solvents of varying polarity. Based on measurements of fluorescence yield and lifetime, and of triplet yield and hydrated-electron formation, two distinct mechanisms of solvent-induced fluorescence quenching are evidenced. The first mechanism involves the cyano substituent and leads to an increase in the rate constant of internal conversion of one order of magnitude in ethanolic solution and of more than two orders of magnitude in water, as compared to solutions in n-hexane or acetonitrile. A similar trend had previously been observed in the case of 4-N,N-dimethylaminobenzonitrile (DMABN). The second mechanism reduces the fluorescence lifetimes of the non-cyanated derivatives in aqueous solution by one order of magnitude and is related to the formation of hydrated electrons. Neither of these mechanisms is influenced by methylation at the ring nitrogen. Quantum chemical calculations are performed on the ground and excited states of the hydrogen-bonded complexes between protic solvents and MI as well as CMI. Stable hydrogen-bonded configurations involving the CN substituent and a solvent OH group are found; these configurations are stable both in the ground and the first excited singlet states, whereas the corresponding complex at the ring amino nitrogen is stable in the ground state only. The CN--HO configuration is therefore a prime candidate for a mechanistic explanation of the observed quenching by the first mechanism. These findings may have useful applications for the design of fluorescence probes for water in biological systems.
Detecting Simulated Patterns of Lung Cancer Biomarkers by Random Network of Single-Walled Carbon Nanotubes Coated with Nonpolymeric Organic Materials (2008)

An array of chemiresistive random network of single-walled carbon nanotubes coated with nonpolymeric organic materials shows a high potential for diagnosis of lung cancer via breath samples. The sensors array shows excellent discrimination between the volatile organic compounds (VOCs) found in the breath of patients with lung cancer, relative to healthy controls, especially if the sensors array is preceded with either water extractor and/or preconcentrator of VOCs. The pattern compositions of the healthy and cancerous states were determined by gas-chromatography linked with mass-spectroscopy (GC-MS) analysis of real exhaled breath.
A rapid one‐step method for the characterization of membrane lipid remodeling in Francisella using matrix‐assisted laser desorption ionization time‐of‐flight tandem mass spectrometry (2011)

Lipids are essential components of all bacterial membranes. The most common membrane-associated lipids in Gram-negative bacteria are phospholipids and lipid A, the hydrophobic anchor of lipopolysaccharide. Diversity in these lipids arises through structural modifications that include changes in the length and location of fatty acids, and the addition of phosphate and carbohydrate moieties. Analysis of individual structural modifications normally requires large quantities of starting material and multiple methods for the isolation, hydrolysis, and analysis. In this study, we developed a novel one-step protocol for the combined isolation of phospholipids and lipid A from Francisella subspecies followed by analysis using matrix-assisted laser desorption ionization time-of-flight tandem mass spectrometry. The total time for lipid isolation and analysis was approximately 15 min and with a lower limit of detection of approximately 100 ng of purified lipid. This protocol identified the major lipid structures using both wild-type Ft subspecies strains and lipid A biosynthesis mutants. We also determined the relative levels of individual lipid A and phospholipids after growth under conditions that mimic the mammalian infection process. This analysis showed that the bacterial membranes remodeled rapidly to adapt to changes in environmental growth conditions and may be important for Francisella pathogenesis.
Increased yield of endothelial cells from peripheral blood for cell therapies and tissue engineering (2020)

Peripheral blood-derived endothelial cells (pBD-ECs) are an attractive tool for cell therapies and tissue engineering, but have been limited by their low isolation yield. We increase pBD-EC yield via administration of the chemokine receptor type 4 antagonist AMD3100, as well as via a diluted whole blood incubation (DWBI).
Quaternary Polymer Electrolytes Containing an Ionic Liquid and a Ceramic Filler (2016)

In this work, the individual and combined effects of an ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide and ceramic filler silicon dioxide on the thermal and electrochemical properties of poly(ethylene oxide) electrolytes have been investigated. The electrolyte containing both components has the lowest glass transition (-60 °C) and melting temperatures (27 °C), the highest conductivity at any investigated temperature, and the highest limiting current density (at 40 °C). This solid polymer electrolyte also exhibits the best long-term cycling performance in Li/LiFePO4 cells.
Synthesis and Biological Evaluationof 6-Substituted Purinylcarbanucleosides with a Cyclopenta[b]thiophene Pseudosugar (2009)

The first members of a new family of heterocarbobicyclic nucleoside analogues have been synthesized from the cis/trans mixture of (4-amino-5,6-dihydro-4H-cyclopenta[b]thiophen-6-yl)methanols (cis/trans -7). The separation of the cis and trans intermediates during the preparation of the 6-chloropurine derivatives allowed a separate preparation of the purine heterocarbanucleosides cis-10 and trans-11, from which cis-12-14 and trans-16-18 were obtained by replacement of the 6-chloro substituent with amino, hydroxy, and cyclopropylamino groups. Additionally, the 6-phenylpurinyl analogues cis-15 and trans- 19 were prepared from cis-10 and trans-11 using Suzuki-Miyaura methodology. In tests of antiviral and cytostatic activities, compound 11 showed cytostatic activity against Molt4/C8 human T lymphoblastic leukemia cells. Antiviral activity was shown by compounds 15 and 19 against Punta­ Toro virus and Coxackie virus B4 (compound 11).
Human Papillomavirus DNA Associated with Foreskins of Normal Newborns (1986)

Foreskins from 70 unselected infants undergoing routine circumcision were analyzed by dot blot hybridization for the presence of DNA related to that of human papillomavirus (HPV) type 6, 11, 16, or 18. Three foreskins (4%) contained HPV DNA; two contained DNA related to HPV-16, and one contained DNA related to HPV-6. These results suggest that neonates exhibit evidence of a relatively high incidence of exposure to HPV. The outcome of exposure may be initially asymptomatic. A retrospective study of maternal charts showed six mothers with abnormal Pap smears, but no correlation could be identified between these mothers and the HPV-positive foreskins.