gebhart/patrepeval huggingface dataset:
Fast and robust watermarking of JPEG files (2003)

In this paper, we present a fast watermarking method that applies to JPEG images. JPEG is a standard image format supported by virtually all available image software applications. Our method manipulates the quantized DCT coefficients directly and can be implemented in real time. We use texture masking to embed a stronger watermark signal in certain texture areas. Watermark robustness to JPEG compression, additive Gaussian noise and image cropping attacks is studied with the proposed system. The relationship between watermark robustness and watermark position is also studied. A description of the method is included and results are presented along with a discussion of possible improvements.
Prevalence of tooth transposition, third molar agenesis, and maxillary canine impaction in individuals with Down syndrome. (2000)

Alterations in the size, morphology and number of teeth are among the many inherited disorders that have been reported in individuals with Down syndrome. By contrast, third molar agenesis and tooth transposition have been largely ignored and the prevalence of canine impaction has not been reported. The intention of this study was to quantify the occurrence of these anomalies in a group of individuals with Down syndrome, using standardized records, which included a clinical examination, dental casts, and a panoramic radiograph. The results show a notably high prevalence of third molar agenesis (74% of individuals older than 14 years), canine impaction (15%), and maxillary canine/first premolar transposition (15%), compared to published figures from random population samples. These anomalies should not be seen as separate, independent entities, but as associated phenomena. The slow rate of cell growth and a consequent reduced cell number that characterize this syndrome may be responsible for the underdevelopment of the upper jaw, the delayed dental development, the reduction in teeth number and size, and the altered path of canine eruption. No explanation, other than genetics, is immediately available to explain why the maxillary canine/first premolar transposition should represent another phenotypic expression of this trisomy.
Acid-Catalyzed Cyclodehydration of Hydroxyamides. I. δ-Hydroxyamides (1970)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcid-Catalyzed Cyclodehydration of Hydroxyamides. I. δ-HydroxyamidesDenis Bailey and C. George De GraziaCite this: J. Org. Chem. 1970, 35, 12, 4088–4093Publication Date (Print):December 1, 1970Publication History Published online9 September 2003Published inissue 1 December 1970https://pubs.acs.org/doi/10.1021/jo00837a714https://doi.org/10.1021/jo00837a714research-articleACS PublicationsRequest reuse permissionsArticle Views155Altmetric-Citations13LEARN 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
Molecular Targeted Enhanced Ultrasound Imaging of Flk1 Reveals Diagnosis and Prognosis Potential in a Genetically Engineered Mouse Prostate Cancer Model (2009)

Molecular imaging techniques used to detect the initiation of disease have the potential to provide the best opportunity for early treatment and cure. This report aimed at testing the possibility that Flk1+ (vascular endothelial growth factor receptor 2), a crucial angiogenesis factor of most tumor cells, could be a molecular targeted imaging marker for the diagnosis and prognosis of cancer. We performed Flk1-targeted microbubble-enhanced ultrasound (US) imaging of prostate cancer in a genetically engineered mouse model with normal-appearing intact US (negative) prostates and with three different tumor sizes (small, medium, and large). Higher levels of Flk1+ molecular signals were identified in the intact US (negative) prostate group by US-targeted imaging and immunohistochemical analysis. The increase in Flk1+ expression occurred prior to the angiogenesis switch-on phase and vascularity peak. After this peak accumulation stage of Flk1+ molecules, lower and stabilized levels of Flk1+ signals were maintained together with tumor growth from small, to medium, to large size. In a longitudinal observation in a subset (n = 5) of mice with established tumors, elevated Flk1+ signals were observed in tissues surrounding the prostate cancer, for example, the ipsilateral boundary zones between two developing tumor lobes, new tumor blood vessel recruits, the urethra border, and the pelvic node basin. The potential of Flk1-targeted US imaging as a predictive imaging tool was confirmed by correlation studies of three-dimensional US B-mode imaging, gross pathology, and histology analyses. The results of the application in a genetically engineered mouse model with prostate cancer of molecular Flk1-targeted US imaging support the contention that Flk1 can be used as a molecular imaging marker for small tumors undetectable by microimaging and as a molecular diagnostic and prognosis marker for tumor metastasis and progression.
Oxidation kinetics of ZrNbO in steam: differences between the pre-and post-transition stages (2005)

International audience
Chalcogen-centered spirocyclic mixed-metal carbonyl complexes: Synthesis and molecular structures of (CO) 8 (μ-PCy 2 )Re 2 (μ 4 -E)Fe 2 (μ-ER)(CO) 6 and [(CO) 8 (μ-PCy 2 )Re 2 (μ 4 -E)Fe 2 (CO) 6 ] 2 (μ 4 -E 2 ) (E = S, Se, Te; R = Organic Residue) (2003)

When NEt4[Re2(μ-PCy2)(CO)8] (1) was reacted with Fe2(μ-E2)(CO)6 (E = S, Se, Te) in THF, the salts NEt4[(CO)8(μ-PCy2)Re2(μ4-E)Fe2(μ-E)(CO)6] (E = S (2a), Se (2b), Te (2c)) were formed. Their spirocyclic anions were trapped with MeI, giving the spirocyclic complexes (CO)8(μ-PCy2)Re2(μ4-E)Fe2(μ-EMe)(CO)6 (E = S (3a), Se (3b), Te (3c)). Their molecular structures were confirmed by single-crystal X-ray analysis. The anions of 2a-c are sensitive to oxidation. On crystallization in the presence of oxygen the corresponding dichalcogenides [(CO)8(μ-PCy2)Re2(μ4-E)Fe2(CO)6]2(μ4-E2) (E = S (4a), Se (4b), Te (4c)) were obtained in good yield. Their molecular structures were confirmed by single-crystal X-ray analysis. 2a was also trapped with CF3COOH, giving (CO)8(μ-PCy2)Re2(μ-S4)Fe2(μ-SH)(CO)6 (5). The latter can be expanded by SH oxidative addition of its μ-SH function to Os3(CO)11(NCMe), giving the mixed-metal carbonyl complex (CO)8(μ-PCy2)Re2(μ4-S)Fe2(CO)6(μ3-S)Os3(μ-H)(CO)11 (6). The framework of 6 could be derived from X-ray diffraction data. However, these data were insufficient for complete solution of the molecular structure, but spectroscopic data and elemental analysis of 6 are in accordance with the proposed molecular structure.
Embryogénèse somatique de l'épinette et du mélèze - Guide des techniques de laboratoire (1993)

Ce rapport est disponible dans : Rapport d'Information - Institut Forestier National de Petawawa
A Distributed Ledger-Enabled Interworking Model for the Wireless Air Interface (2020)

While direct allocation of spectrum and evolved medium access protocols provide a base for ubiquitous wireless connectivity, the existing TCP/IP and OSI models were designed for wired networks and do not address open interconnection of air interfaces. Without an interconnection model for the air interface, existing network designs continue to tie wireless medium access to that of the backhaul provider for ownership of access and identity trust, resulting in limitations on functionality and coverage. In this paper, we propose a novel solution to access ownership and identity trust by extending the TCP network standard, under a new model we propose, named TCP-Air which integrates distributed ledger technologies directly at the air interface. Further, we present two use cases of the TCP-Air model, demonstrating applications not feasible under existing permissioned-access network designs.
Correlation filters for recognition of live-scan fingerprints with elastic distortions (2003)

A special NIST database of live-scan fingerprint with elastic distortion wa prepared. It is used to evaluate the effect of elastic and other distortions on correlation filters. The need for normalized and fine vs. coarse rotationally-aligned data are addressed with performance gains for various cases noted. Procedures to test and evaluate fingerprint recognition algorithms for verification and identification are defined for the first time and initial results are presented.
Kunststoffe stoßartig belastet (1996)

This paper deals with a computer-controlled and fully instrumented dropping sledge test equipment for measuring the endurance strength of polymers. The measuring program enables an automatically flow of the test and a complete registration ofspecimen response including crack propagation. First tests of specimens of different thermoplastic materials demonstrated the capability of the equipment to registrate the specimen response during a single impact as well as in endurance loading up to some 10 5 impacts with good reproducibility. On the basis of the obtained results so far it can be concluded that the endurance impact test enables to distinguish the influence of different parameters on the mechanical endurance strength of polymers.
Mobile robot navigation using the range-weighted Hough transform (1995)

Accurate navigation of a mobile robot in cluttered rooms using a range-measuring laser as a sensor has been achieved. To extract the directions and distances to the walls of the room the range-weighted Hough transform is used. The following experimental results are emphasized: The robot extracts the walls of the surrounding room from the range measurements. The distances between parallel walls are estimated with a standard deviation smaller than 1 cm. It is possible to navigate the robot along any preselected trajectory in the room. One special case is navigation through an open door detected by the laser. The accuracy of the passage is 1 cm at a speed of 0.5 m/s. The trajectory is perpendicular to the wall within 0.5 degrees in angle. When navigating through corridors, the accuracy is better than 1 cm at 0.8 m/s-the maximum speed of the robot. Odometric data and laser measurements are combined using the extended Kalman filter. The size of the cluttered rectangular room and the position and orientation (pose) of the robot are estimated during motion. The extraction and the resulting navigation are very robust against both spurious measurements in the laser measurements and disturbing objects.< <ETX>&gt;</ETX>
Erythrobacter longus gen. nov., sp. nov., an Aerobic Bacterium Which Contains Bacteriochlorophyll a (1982)

Four orange-pigmented and seven pink-pigmented strains of bacteria which contained bacteriochlorophyll a were isolated from high-tidal seaweeds, such as Enteromorpha linza (L.) J. Ag. and Porphyra sp. All of the isolates were gram negative. The orange-pigmented bacteria were rods with parallel sides and rounded ends, and the pink-pigmented bacteria were ovoids and short rods. All were motile by means of subpolar flagella. None of the strains produced growth anaerobically in the light. No growth occurred with an atmosphere containing H2 and CO2. All of these bacteria grew aerobically and utilized glucose, pyruvate, acetate, butyrate, and glutamate as sole organic carbon sources. The best growth occurred on complex media formulated for heterotrophic marine bacteria. Biotin was required. Oxidase and catalase were present. Small amounts of acid were produced from a wide range of carbohydrates under microaerobic conditions. Gelatin was hydrolyzed. The strains which we investigated fell into the following three clusters: cluster A, all of the orange strains; cluster B, three pink strains; and cluster C, four pink strains. The strains of clusters B and C required thiamine and nicotinic acid and were susceptible to streptomycin. Tween 80 was hydrolyzed and phosphatase activity was produced by the strains of clusters A and B. Pantothenate was required only by the strains of cluster C. The guanine-plus-cytosine contents of the deoxyribonucleic acids of these organisms ranged from 60 to 64 mol%. These organisms are recognized here as members of a new genus, Erythrobacter. Although these organisms did not grow phototrophically, the presence of bacteriochlorophyll a indicated that they are most closely related to the Rhodospirillaceae. The type species is Erythrobacter longus, the type strain of which is an orange strain, OCh101 (= IFO 14126).
Enantioselective Adsorption of Phenylalanine onto Self-Assembled Monolayers of 1,1‘-Binaphthalene-2,2‘-dithiol on Gold (2002)

Self-assembled monolayer of atropisomeric compound, 1,1'-binaphthalene-2,2'-dithiol (BNSH), provides a field for chiral discrimination. The two-dimensional chiral arrangement with screw-like units, each of which is composed of three BNSH molecules, plays an important role in the enantioselectivity of adsorption of phenylalanine, as revealed by a quartz crystal microbalance technique.
Activation of carbonic anhydrase by beta-adrenergic agonists and inhibition by beta-adrenergic blockers. (1985)

Knowing the in vitro and in vivo gastric secretory effects of beta-adrenergic agonists and antagonists, as well as the role of carbonic anhydrase in the gastric HCl production, we investigated the effect of some beta-adrenoceptor agonists (isoprenaline and orciprenaline) and antagonists (propranolol, timolol, atenolol, pindolol, acebutolol, metoprolol, exoxprenolol) on the purified, human red blood cell and gastric mucosa carbonic anhydrase. All the drugs were added to enzymatic preparations in a concentration range of 10(-7)-10(-3) M, the enzymatic activity being determined according to Maren's micro-method. Dose-response relationships were plotted for each drug. The activating effect of the beta-adrenergic agonists isoprenaline and orciprenaline on all the three species of carbonic anhydrase was dose-dependent, maximum effect being reached at 10(-3) M, when a highly significant (p less than 0.001) enzymatic activation was achieved. Beta-adrenergic blocking drugs decreased significantly the activity of carbonic anhydrase, thus, the activity of purified enzyme decreased with propranolol depending on the dose from 2140 +/- 68 to 1060 +/- 82 I.U. (p less than 0.001), that of red blood cell enzyme from 3340 +/- 280 to 1050 +/- 180 I.U. (p less than 0.001) and that of gastric mucosa enzyme from 2.1 +/- 0.2 to 1.1 +/- 0.1 E.U./mg bioptic sample. They also antagonized dose-dependently the activating effect of beta-adrenergic agonists on the enzyme. The results suggest that carbonic anhydrase might be one of the sites of beta-adrenoceptors, further studies using specific radioligands being necessary to elucidate whether these effects represent the interaction of these drugs with their specific receptor or if they are unspecific pharmacologic effects.
Millimeter Wave Beamforming Based on WiFi Fingerprinting in Indoor Environment (2015)

Millimeter Wave (mm-w), especially the 60 GHz band, has been receiving much attention as a key enabler for the 5G cellular networks. Beamforming (BF) is tremendously used with mm-w transmissions to enhance the link quality and overcome the channel impairments. The current mm-w BF mechanism, proposed by the IEEE 802.11ad standard, is mainly based on exhaustive searching the best transmit (TX) and receive (RX) antenna beams. This BF mechanism requires a very high setup time, which makes it difficult to coordinate a multiple number of mm-w Access Points (APs) in mobile channel conditions as a 5G requirement. In this paper, we propose a mm-w BF mechanism, which enables a mm-w AP to estimate the best beam to communicate with a User Equipment (UE) using statistical learning. In this scheme, the fingerprints of the UE WiFi signal and mm-w best beam identification (ID) are collected in an offline phase on a grid of arbitrary learning points (LPs) in target environments. Therefore, by just comparing the current UE WiFi signal with the pre-stored UE WiFi fingerprints, the mm-w AP can immediately estimate the best beam to communicate with the UE at its current position. The proposed mm-w BF can estimate the best beam, using a very small setup time, with a comparable performance to the exhaustive search BF.
Using RNAseq data to improve genomic selection in dairy cattle (2018)

Genomic selection is playing an increasingly important role in animal breeding worldwide. For reasons of cost and computational feasibility, it is useful to select variant sets of maximum predictive ability, while minimising the number of variants required. RNA sequencing has the potential to aid variant selection in two ways: first, by enabling the discovery of variants of strong biological relevance (by virtue of their expression in tissues of interest); and second, by empowering the discovery of expression QTL, enabling enrichment of variant data with loci of demonstrable, modulatory effect. In this study, RNAseq was performed on lactating mammary gland from 373 New Zealand dairy cattle, followed by variant calling and eQTL discovery. Significant eQTL were identified at 3,738 genes, yielding 3,695 distinct tag variants, which were subsequently tested for their ability to predict milk volume, fat and protein phenotypes in a genomic selection context. We show that variants selected in this manner show good predictive abilities for these phenotypes, and that RNAseq is a potentially useful approach for enhancing variant selection.
NilD CRISPR RNA contributes to Xenorhabdus nematophila colonization of symbiotic host nematodes (2014)

The bacterium Xenorhabdus nematophila is a mutualist of entomopathogenic Steinernema carpocapsae nematodes and facilitates infection of insect hosts. X. nematophila colonizes the intestine of S. carpocapsae which carries it between insects. In the X. nematophila colonization-defective mutant nilD6::Tn5, the transposon is inserted in a region lacking obvious coding potential. We demonstrate that the transposon disrupts expression of a single CRISPR RNA, NilD RNA. A variant NilD RNA also is expressed by X. nematophila strains from S. anatoliense and S. websteri nematodes. Only nilD from the S. carpocapsae strain of X. nematophila rescued the colonization defect of the nilD6::Tn5 mutant, and this mutant was defective in colonizing all three nematode host species. NilD expression depends on the presence of the associated Cas6e but not Cas3, components of the Type I-E CRISPR-associated machinery. While cas6e deletion in the complemented strain abolished nematode colonization, its disruption in the wild-type parent did not. Likewise, nilD deletion in the parental strain did not impact colonization of the nematode, revealing that the requirement for NilD is evident only in certain genetic backgrounds. Our data demonstrate that NilD RNA is conditionally necessary for mutualistic host colonization and suggest that it functions to regulate endogenous gene expression.
Potency Evaluation of a Formulated Drug Product Containing 150-kd Botulinum Neurotoxin Type A (2008)

The potency of the drug product containing 150-kd BoNT/A (Xeomin) measured substantially lower than the labeled 100 U per vial when tested in a potency assay approved for release testing of an established drug product containing 900-kd BoNT/A (BOTOX).
Incorporation of Tetrazolium Blue (TB)/Gold Nanoparticles (GNPs) into Carbon Paste Electrode: Application as an Electrochemical Sensor for the Sensitive and Selective Determination of Sotalol in Micellar Medium (2017)

Abstract The electrochemical oxidation of Sotalol (SOT) based on Tetrazolium Blue (TB)/gold nanoparticles (GNPs)‐modified carbon paste electrodes (CPE) have been studied in the presence of sodium lauryl sulphate (SLS). Cyclic voltammetry (CV), differential pulse voltammetry (DPV), chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques have all been utilized within this study. GNPs and TB have a synergetic effect‐giving rise to highly improved electrochemical responses and provide an advantageous platform for the basis of an electrochemical sensor with excellent performance. The experimental parameters, electrodeposition time, pH and scan rate have all been examined and optimized. The sensing of SOT via DPV is found to exhibit a wide linear dynamic range of 1.0×10 −7 –7.5×10 −4 M in pH 2. LOD and LOQ were calculated and found to correspond to 2.5×10 −8 M and 8.3×10 −8 M, respectively. The suggested sensor has been used successfully for SOT determination in pharmaceutical samples and human urine as real samples. Satisfactory recoveries of analyte from these samples are demonstrated indicating that the suggested sensor is highly suitable for clinical analysis, quality control and a routine determination of SOT in pharmaceutical formulations.
Left Atrial Enhancement Correlates With Myocardial Conduction Velocity in Patients With Persistent Atrial Fibrillation (2020)

At clinically relevant spatial scales, comparable to area of a mapping catheter electrode, LGE-CMRI correlates with CV. Measurement scale is important in accurately quantifying the association of CV and LGE-CMRI intensity. Importantly, NI, but not IIR, accounts for changes in the dynamic range of CMRI and enables quantitative reproducibility of the association.
Microparticle-enhanced nephelometric immunoassay of lysozyme in milk and other human body fluids. (1998)

Quantitation of lysozyme in human milk was performed by a microparticle-enhanced nephelometric immunoassay based on the measurement of the light scattered during the competitive immunoagglutination of a microparticle-lysozyme conjugate with an anti-lysozyme antiserum. This immunoassay has a detection limit of 8 microg/L of reaction mixture and can be performed using diluted milk (1:6000, in reaction mixture), excluding sample pretreatment. Human milk lysozyme can be quantified over the concentration range 0.09-1.50 g/L, with within- and between-run coefficients of variation <5%. Changes in the lysozyme concentration of human milk during lactation were determined in 636 samples. Lysozyme concentrations (mean +/- SE) decreased from colostrum (0.36 +/- 0.02 g/L) to transitional milk (0.30 +/- 0.01 g/L) and mature milk during days 15-42 (0.30 +/- 0.01 g/L), then increased in the mature milk during days 43-56 (0.35 +/- 0.01 g/L) and especially during days 57-84 (0.83 +/- 0.05 g/L). The proportion of lysozyme contributing to total protein was found to rise during lactation and was as follows: colostrum (1.7%), transitional milk (2.3%), and mature milk from days 15-28 (2.7%), days 29-42 (3.1%), days 43-56 (3.8%), and days 57-84 (7.3%). The assay developed for milk was also suitable for the determination of lysozyme in other human body fluids.