gebhart/patrepeval huggingface dataset:
A method for original image recovery for caption areas in video (2003)

It is sometimes necessary to remove the captions from video images already broadcast and recover the original images. Traditional research on image restoration has focused on restoring blurred images to sharp images using frequency filtering. This paper proposes a method for extracting caption regions and a method for automatically recovering original. The caption region detection method extracts caption candidate regions using TF (topographic feature) of characters, and verifies candidate regions to determine the final caption regions. From the result of caption region detection, we know the start and end frames of captions in video and the character areas in the caption regions. For original image recovery, we use information such as the start and end frames of the detected caption, camera operation, scene change and motion vector of extracted characters in caption regions. The direction for the recovery is decided using information on the scene change, the start and end frame for captions. According to the direction, we recover the original image using information of camera operation and Block Matching Algorithm (BMA) for character components in extracted caption region. Experimental results show that the case of stationary images having little motions is well recovered. We see that the case of images having motion in complex background is also recovered.
CMOS technology scaling, 0.1 μm and beyond (2002)

A projection of CMOS technology scaling and the expected performance, density, and power improvements are presented. Technology for scaling to sub-0.1 /spl mu/m effective channel length (L/sub eff/) is discussed, and the key barriers are examined. It is shown that device speed enhancement of about 3X, circuit density improvement of 8X, and 20-40X improvement in power-delay product (mW/MIPS) will be achieved by scaling the CMOS technologies down to the sub-0.1 /spl mu/m regime, operating in the 1 V range, as compared with today's high performance 0.35 /spl mu/m devices at 3.3 V. Such anticipated significant improvements in the silicon chip performance will continue to fuel the growth of the semiconductor industry for the next decade.
Cannabinoid Composition in Seedlings Compared to Adult Plants of Cannabis sativa (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCannabinoid Composition in Seedlings Compared to Adult Plants of Cannabis sativaAnn F. Vogelmann, Jocelyn C. Turner, and Paul G. MahlbergCite this: J. Nat. Prod. 1988, 51, 6, 1075–1079Publication Date (Print):November 1, 1988Publication History Published online1 July 2004Published inissue 1 November 1988https://pubs.acs.org/doi/10.1021/np50060a004https://doi.org/10.1021/np50060a004research-articleACS PublicationsRequest reuse permissionsArticle Views436Altmetric-Citations23LEARN 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
Present limitations of CdTe detectors in nuclear medicine (1977)

The potential capabilities and limitations of cadmium telluride nuclear radiation detectors in nuclear medicine are discussed. Their use in X-ray transmission tomography is considered in some detail.
Magnetic resonance studies of the binding site interactions between <sup>19</sup>F-labeled nitrophenyl haptens and specific mouse myeloma immunoglobulin MOPC-315 (1978)

The interactions between MOPC-315, a mouse myeloma protein with specificity for nitrophenyl haptens, and ^(19)F-substituted haptens have been investigated using nuclear\nmagnetic resonance (NMR) spectroscopy. The haptens studied\nare mono- or dinitrophenyl derivatives of γ-aminobutyric acid, lysine, or glycine which have trifluoromethyl groups attached to the phenyl rings. Upon binding to immunoglobulin, the ^(l9)F nucleus experiences a downfield shift whose magnitude depends on the position of the trifluoromethyl group on the phenyl ring but is independent of other structural changes in the hapten such as the number of nitro groups attached to the phenyl ring. Further, the chemical shift of bound hapten is not influenced by the amount of the constant region attached to the binding site; we accordingly conclude that the presence of the distal, constant regions of the immunoglobulin molecule does not influence binding site interactions.
The structures of huperzine A and B, two new alkaloids exhibiting marked anticholinesterase activity (1986)

Huperzine A and B, two new Lycopodium alkaloids isolated from Huperziaserrata (Thunb.) Trev., are shown to possess structures 1 and 3, respectively, on the basis of chemical and spectroscopic data.
Surface Investigation of Photo-Degraded Wood by Colour Monitoring, Infrared Spectroscopy, and Hyperspectral Imaging (2013)

The aim of this investigation is to study the changes occurring on the surface of poplar wood exposed to artificial irradiation in a Solar Box. Colour changes were monitored with a reflectance spectrophotometer. Surface chemical modifications were evaluated by measuring the infrared spectra. Hyperspectral imaging was also applied to study the surface wood changes in the visible-near infrared and the short wave infrared wavelength ranges. The data obtained from the different techniques were compared to find the possible correlations in order to evaluate the applicability of the Hyperspectral imaging to investigate wood modifications in a non-invasive modality. The study of colour changes showed an important variation due to photo-irradiation which is the greatest change occurring within the first 24 hours. Infrared spectroscopy revealed that lignin degrades mainly in the first 48 hours. Concerning Hyperspectral imaging, the spectral features in the visible-near infrared range are mainly linked to the spectral shape, whereas in the short wave infrared cellulose and lignin affect shape and reflectance levels. The proposed approach showed that a correlation can be established between colour variation and wood degradation in the visible-near infrared range; furthermore in the short wave infrared region surface chemical changes can be assessed.
A Computer Method for Calculating Kendall's Tau with Ungrouped Data (1966)

Abstract Adapting the usual manual methods of computing Kendall's tau to automatic computation result in a running time of order N 2. A method is described with running time of order N log N.
A Hardware-Efficient Architecture for Accurate Real-Time Disparity Map Estimation (2015)

Emerging embedded vision systems utilize disparity estimation as a means to perceive depth information to intelligently interact with their host environment and take appropriate actions. Such systems demand high processing performance and accurate depth perception while requiring low energy consumption, especially when dealing with mobile and embedded applications, such as robotics, navigation, and security. The majority of real-time dedicated hardware implementations of disparity estimation systems have adopted local algorithms relying on simple cost aggregation strategies with fixed and rectangular correlation windows. However, such algorithms generally suffer from significant ambiguity along depth borders and areas with low texture. To this end, this article presents the hardware architecture of a disparity estimation system that enables good performance in both accuracy and speed. The architecture implements an adaptive support weight stereo correspondence algorithm that integrates image segmentation information in an attempt to increase the robustness of the matching process. The article also presents hardware-oriented algorithmic modifications/optimization techniques that make the algorithm hardware-friendly and suitable for efficient dedicated hardware implementation. A comparison to the literature asserts that an FPGA implementation of the proposed architecture is among the fastest implementations in terms of million disparity estimations per second (MDE/s), and with an overall accuracy of 90.21%, it presents an effective processing speed/disparity map accuracy trade-off.
Xenoestrogens Released from Lacquer Coatings in Food Cans (1995)

We present data showing that some foods preserved in lacquer-coated cans and the liquid in them may acquire estrogenic activity. Hormonal activity was measured using the E-screen bioassay. The biological activity of vegetables packed in cans was a result of plastic monomers used in manufacturing the containers. The plastic monomer bisphenol-A, identified by mass spectrometry, was found as a contaminant not only in the liquid of the preserved vegetables but also in water autoclaved in the cans. The amount of bisphenol-A in the extracts accounted for all the hormonal activity measured. Although the presence of other xenoestrogens cannot be ruled out, it is apparent that all estrogenic activity in these cans was due to bisphenol-A leached from the lacquer coating. The use of plastic in food-packaging materials may require closer scrutiny to determine whether epoxy resins and polycarbonates contribute to human exposure to xenoestrogens.
A Pseudo-Divide-By-Carrier Coherent Demodulator for DSB-SC Signals (2012)

A novel demodulation technique was introduced to recover the baseband signal from a DSB-SC pass-band signal. The technique relies on an arithmetic division of the DSB-SC wave by a synchronized carrier wave. The phase error and frequency drifts may lead to severely corrupted signal. A earner recovery technique (PLL or signal squaring method) are recommended for robust operation. The electronic circuit responsible for regenerating baseband signal was introduced. To ensure stable operation, a pseudo division technique is briefly introduced to avoid the accidental division by zero for nonsynchronized earners. The proposed technique builds a coherent direct conversion demodulator that needs no filtering and thus accommodates various baseband bandwidths. Simulation results show that using a synchronized carrier will result in accurate results. However, the complexity shall increase while implementing the pseudo division and thus conventional direct conversion receivers become simpler, but on the cost of involving filtering, which limits baseband bandwidths and introduces phase delay.
Zebrafish Avatars towards Personalized Medicine—A Comparative Review between Avatar Models (2020)

Cancer frequency and prevalence have been increasing in the past decades, with devastating impacts on patients and their families. Despite the great advances in targeted approaches, there is still a lack of methods to predict individual patient responses, and therefore treatments are tailored according to average response rates. "Omics" approaches are used for patient stratification and choice of therapeutic options towards a more precise medicine. These methods, however, do not consider all genetic and non-genetic dynamic interactions that occur upon drug treatment. Therefore, the need to directly challenge patient cells in a personalized manner remains. The present review addresses the state of the art of patient-derived <i>in</i><i>vitro</i> and <i>in</i><i>vivo</i> models, from organoids to mouse and zebrafish Avatars. The predictive power of each model based on the retrospective correlation with the patient clinical outcome will be considered. Finally, the review is focused on the emerging zebrafish Avatars and their unique characteristics allowing a fast analysis of local and systemic effects of drug treatments at the single-cell level. We also address the technical challenges that the field has yet to overcome.
Thyristor controlled susceptances for balancing compensators operated under nonsinusoidal conditions (1994)

The RMS value of the unbalanced and reactive currents in three-phase unbalanced power systems can be reduced with a balancing compensator that has an adaptive property. Circuits that provide a controllable susceptance are the main components of these compensators. They can be built from thyristors, switched inductors and reactive elements. The susceptance of such circuits is referred to as 'thyristor controlled susceptance' (TCS) in the paper. The harmonic currents generated by switched thyristors and injected into the supply cause a waveform distortion, however. They have to be often operated, moreover, at distorted supply voltage, and a resonance with the system inductance may occur for harmonic frequencies. As a consequence, the load balancing and power factor improvement are obtained at the expense of an increase in waveform distortion. This distortion can be reduced if the structure of the circuit that provides the TCS is properly selected. In this paper, various circuits that can provide the TCS are analysed and compared with respect to generated harmonic currents and frequency properties.
Therapeutic Effect of Multiple Resiniferatoxin Intravesical Instillations in Patients With Refractory Detrusor Overactivity: A Randomized, Double-Blind, Placebo Controlled Study (2006)

Multiple intravesical instillations of 10 nM resiniferatoxin were effective for improving the incontinence grade in 62% of patients at 3 months, of whom 50% maintained a therapeutic effect 6 months after treatment. The therapeutic effect of resiniferatoxin was significantly superior to that of placebo.
Angiotensin I-Converting Enzyme Inhibitor Activity on Egg Albumen Fermentation (2015)

Lactobacillus plantarum is used for fermentation of fish products, meat and milk. However, the utilization of these bacteria in egg processing has not been done. This study was designed to evaluate the potential of fermented egg albumen as a functional food that is rich in angiotensin I-converting enzyme inhibitors activity (ACE-inhibitor activity) and is antihypertensive. A completely randomized design was used in this study with six durations of fermentation (6, 12, 18, 24, 30, and 36 h) as treatments. Six hundred eggs obtained from the same chicken farm were used in the experiment as sources of egg albumen. Bacteria L. plantarum FNCC 0027 used in the fermentation was isolated from cow's milk. The parameters measured were the total bacteria, dissolved protein, pH, total acid and the activity of ACE-inhibitors. The results showed that there were significant effects of fermentation time on the parameters tested. Total bacteria increased significantly during fermentation for 6, 12, 18, and 24 h and then decreased with the increasing time of fermentation to 30 and 36 h. Soluble protein increased significantly during fermentation to 18 h and then subsequently decreased during of fermentation to 24, 30, and 36 h. The pH value decreased markedly during fermentation. The activities of ACE-inhibitor in fermented egg albumen increased during fermentation to 18 h and then decreased with the increasing of the duration of fermentation to 24, 30, and 36 h. The egg albumen which was fermented for 18 h resulted in a functional food that was rich in ACE-inhibitor activity.
A STUDY OF THE OXIDES OF POTASSIUM AND SODIUM (1926)

ADVERTISEMENT RETURN TO ISSUEPREVArticleA STUDY OF THE OXIDES OF POTASSIUM AND SODIUMCharles A. Kraus and Earle F. WhyteCite this: J. Am. Chem. Soc. 1926, 48, 7, [1781]–1790Publication Date (Print):July 1, 1926Publication History Published online1 May 2002Published inissue 1 July 1926https://doi.org/10.1021/ja01418a001RIGHTS & PERMISSIONSArticle Views83Altmetric-Citations7LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (611 KB) Get e-Alertsclose Get e-Alerts
Photoplethysmographic Time-Domain Heart Rate Measurement Algorithm for Resource-Constrained Wearable Devices and its Implementation (2020)

This paper presents an algorithm for the measurement of the human heart rate, using photoplethysmography (PPG), i.e., the detection of the light at the skin surface. The signal from the PPG sensor is processed in time-domain; the peaks in the preprocessed and conditioned PPG waveform are detected by using a peak detection algorithm to find the heart rate in real time. Apart from the PPG sensor, the accelerometer is also used to detect body movement and to indicate the moments in time, for which the PPG waveform can be unreliable. This paper describes in detail the signal conditioning path and the modified algorithm, and it also gives an example of implementation in a resource-constrained wrist-wearable device. The algorithm was evaluated by using the publicly available PPG-DaLia dataset containing samples collected during real-life activities with a PPG sensor and accelerometer and with an ECG signal as ground truth. The quality of the results is comparable to the other algorithms from the literature, while the required hardware resources are lower, which can be significant for wearable applications.
Cells from an immunodeficient patient (46BR) with a defect in DNA ligation are hypomutable but hypersensitive to the induction of sister chromatid exchanges. (1985)

A fibroblast cell strain, 46BR, derived from an immunodeficient patient is hypersensitive to the lethal effects of a wide range of DNA-damaging agents. It is also defective in strand-break rejoining after treatment with dimethyl sulfate and UV light. The present study shows that the cells have a defect in joining Okazaki-type fragments during DNA replication, supporting the interpretation that the basic defect is in ligation of DNA strands. The baseline level of sister chromatid exchange is slightly higher than in normal cells but it does not approach that of Bloom's syndrome or dyskeratosis congenita cells. Sensitivity to the induction of sister chromatid exchange and the hypersensitivity to the lethal effects of a set of DNA-damaging agents are correlated, implying that the basic defect influences both end points in a similar manner. No 6-thioguanine-resistant mutants could be induced by either gamma- or UV-irradiation in these cells, suggesting that error-prone repair pathways for damage induced by these agents may contain a common ligation step in human cells.
Analysis and Improvement of Maximum Power Point Tracking Algorithm Based on Incremental Conductance Method for Photovoltaic Array (2007)

Photovoltaic (PV) array in the photovoltaic power system (PVPS) has the nonlinear current-voltage characteristic which is affected by the panels temperature and irradiance conditions. To improve the energy converter efficiency of the PVPS, the maximum power point tracking algorithm should be adopted to maximize the yield of the PV array. The incremental conductance (INC) method is widely used in the PVPS due to its succinctness and high tracking efficiency. The conventional INC algorithm using a fixed iteration step-size is impossible to achieve rapid dynamic response and good steady tracking accuracy simultaneously, because if the step-size is increased for rapid dynamic response, the tracking accuracy is decreased and vice versa. An improved algorithm with variable step- size is proposed to solve the problem in this paper. The contrastive experimental results between the improved and the conventional INC algorithm are presented to demonstrate its effectiveness.
Velocity and pressure effects on projectiles due to variation of ignition parameters (1972)

The effect of varying the point of ignition of the powder charge within a cartridge case was investigated with respect to both pressure and velocity. By installing a small tube in the base of the cartridge case it was possible to transfer the primer flash to the forward part of the case. Ignition of the powder charge at the top instead of the base gave lower chamber pressures by as much as 6,300 psi and increased muzzle velocity by 35 ft/s. When additional powder was added to obtain the same chamber pressure as a conventionally primed cartridge, muzzle velocities increased by 50 ft/s. When the pressure was brought up past the original level, but kept within normally accepted limits for the 7.62mm NATO round, velocities increased by 100 ft/s over the original load. In order to shape the pressure curve, different loading schemes were tested. Various amounts of powders and powders of different burning rates were layered within the same case, the slowest burning powder being ignited first. Lower pressures and flatter pressure peaks were realized from these configurations. The chamber pressure was reduced by 6,000 psi and the muzzle velocity increased by 100 ft/s.
Advances in Histamine H4 Receptor Ligands (2008)

Objective To review the research on histamine H4 receptor ligands. Methods By combining the foreign literatures, the progress in the mechanism research of histamine H4 receptor ligands and the prospect of drug therapy with H4 receptor ligands are introduced. Results and Conclusions H4 receptor agonists and antagonists have a strong biological activity. With the study progressing, novel drugs for clinical medicine may be developed.