gebhart/patrepeval huggingface dataset:
Finger vein recognition (2011)

Smart recognition of human identity for security and control is a global issue of concern in our world today. Financial losses due to identity theft can be severe, and the integrity of security systems compromised. Hence, automatic authentication systems for control have found application in criminal identification, autonomous vending and automated banking among others. Among the many authentication systems that have been proposed and implemented, finger vein biometrics is emerging as the foolproof method of automated personal identification. Finger vein is a unique physiological biometric for identifying individuals based on the physical characteristics and attributes of the vein patterns in the human finger. It is a fairly recent technological advance in the field of biometrics that is being applied to different fields such as medical, financial, law enforcement facilities and other applications where high levels of security or privacy is very important. This technology is impressive because it requires only small, relatively cheap single-chip design, and has a very fast identification process that is contact-less and of higher accuracy when compared with other identification biometrics like fingerprint, iris, facial and others. This higher accuracy rate of finger vein is not unconnected with the fact that finger vein patterns are virtually impossible to forge thus it has become one of the fastest growing new biometric technology that is quickly finding its way from research labs to commercial development. Historically, R&D at Hitachi of Japan (1997-2000) discovered that finger vein pattern recognition was a viable biometric for personal authentication technology and by 2000-2005 were the first to commercialize the technology into different product forms, such as ATMs. Their research reports false acceptance rate (FAR) of as low as 0.0001 % and false reject rate (FRR) of 0.1%. Today 70% of major financial institutions in Japan are using finger vein authentication.
Devitrification of Zr55Cu30Al15Ni5Bulk Metallic Glass under Heating and HPT Deformation (2020)

The nanocrystal formation in Zr55Cu30Al15Ni5 bulk metallic glass was studied under heat treatment and deformation. The activation energy of crystallization under heating is 278 kJ/mol. Different crystalline phases were found to be formed during crystallization under heating and deformation. At the first crystallization stage, the metastable phase with a hexagonal structure (lattice of space group P63/mmc with the parameters a = 8.66 Å, c = 14.99 Å) is formed under heat treatment. When the temperature rises, the metastable phase decays with the formation of stable crystalline phases. The crystalline Zr2Cu phase with the lattice of space group Fd3m is formed during crystallization under the action of deformation. It was determined that during deformation nanocrystals are formed primarily in the subsurface regions of the samples.
Microwave Accelerated Aza-Claisen Rearrangement (2008)

A study of microwave-induced and standard thermal Overman rearrangement of selected allylic trichloroacetimidates 1a-1f, 6-8 to the corresponding acetamides 2a-2f, 9-11 is reported. The microwave-assisted rearrangement of trifluoroacetimidate 13 is also described. Using this methodology, an efficient access to versatile allylic trihaloacetamides building synthons was established.
Plasma system of the GOL-3T facility (2015)

The plasma system and diagnostics of the new facility GOL-3T are described. This facility is the final result of the first stage in the deep upgrade of the GOL-3 multiple-mirror system, which has operated at the Budker Institute of Nuclear Physics since 1988. The upgrade project supposes creation of two new independent facilities at the site of GOL-3. The GOL-3T facility is intended to study the physics of beam—plasma interaction and generation of subterahertz electromagnetic radiation during the collective relaxation of a high-power relativistic electron beam with a duration of 5–10 μs. Studies on the physics of multiple-mirror plasma confinement in axisymmetric magnetic systems will be continued in a new range of experiment parameters at the second facility, named GOL-NB.
Absorbed and effective doses from cone beam volumetric imaging for implant planning (2009)

The absorbed doses of the 3D Accuitomo of the organs in the primary beam ranged from 1-5 mGy, and were several to ten times lower than other doses. The effective dose of the 3D Accuitomo ranged from 18 muSv to 66 muSv, and was an order of magnitude smaller than the others. In conclusion, these results show that the dose in the 3D Accuitomo is lower than the CB MercuRay and much less than MDCT.
Novel Approach to Improving Specialist Access in Underserved Populations with Suspicious Oral Lesions (2023)

Late detection and specialist referral result in poor oral cancer outcomes globally. High-risk LRMU populations usually do not have access to oral medicine specialists, a specialty of dentistry, whose expertise includes the identification, treatment, and management of oral cancers. To overcome this access barrier, there is an urgent need for novel, low-cost tele-health approaches to expand specialist access to low-resource, remote and underserved individuals. The goal of this study was to compare the diagnostic accuracy of remote versus in-person specialist visits using a novel, low-cost telehealth platform consisting of a smartphone-based, remote intraoral camera and custom software application. A total of 189 subjects with suspicious oral lesions requiring biopsy (per the standard of care) were recruited and consented. Each subject was examined, and risk factors were recorded twice: once by an on-site specialist, and again by an offsite specialist. A novel, low-cost, smartphone-based intraoral camera paired with a custom software application were utilized to perform synchronous remote video/still imaging and risk factor assessment by the off-site specialist. Biopsies were performed at a later date following specialist recommendations. The study's results indicated that on-site specialist diagnosis showed high sensitivity (94%) and moderate specificity (72%) when compared to histological diagnosis, which did not significantly differ from the accuracy of remote specialist telediagnosis (sensitivity: 95%; specificity: 84%). These preliminary findings suggest that remote specialist visits utilizing a novel, low-cost, smartphone-based telehealth tool may improve specialist access for low-resource, remote and underserved individuals with suspicious oral lesions.
Magnetized electron beam for the JLEIC re-circulator cooler ring (2018)

The ion beams of the proposed Jefferson Lab Electron Ion Collider (JLEIC) must be cooled to achieve the required collision luminosity. In general, cooling is accomplished when an electron beam co-propagates with an ion beam moving at the same average velocity, but with different temperature, where the energy of chaotic motion of the ion beam is transferred to the cold electron beam. The cooling rate can be improved by about two orders of magnitude if the process occurs inside a solenoidal magnetic field – so-called magnetized cooling - that forces the electrons to follow small helical trajectories thereby increasing the interaction time with ions and improving the cooling efficiency. However, one of the challenges associated with implementing this cooling technique relates to the fringe field of the cooling solenoid which imparts a large unwanted azimuthal kick onto the electron beam that prevents the electron beam from traveling in the desired tight, well-defined volume within the solenoid. As proposed by Derbenev, the ill-effect of this fringe field can be cancelled if the electron beam is born in a similar field and encountering a fringe field upon exiting the electron gun that produces an azimuthal kick in the opposite direction, such that the two kicks cancel. Besides requiring magnetized beam, the JLEIC re-circulator cooler design requires an electron beam with very high average current and high bunch charge: 140 mA and with nanoCoulomb bunch charge. This contribution describes the latest milestones of a multiyear program to build a magnetized electron beam source based on a 350 kV DC high voltage photogun with inverted insulator geometry.
Growth mechanism of Ni0.3Mn0.7CO3 precursor for high capacity Li-ion battery cathodes (2011)

Transition metal carbonate (Ni0.3Mn0.7CO3) was co-precipitated as the precursor for Li- and Mn-enriched composite materials used as advanced cathodes for lithium-ion batteries. The optimal pH range for synthesis of Ni0.3Mn0.7CO3 in a continuous stirred tank reactor (CSTR) at the pilot scale was predicted by taking into account the chemical equilibriums between the products and reactants. The nucleation and growth of precursor particles were investigated during the CSTR process by monitoring particle size distributions, particle morphologies, chemical compositions, and structures with time. It was found that in the early stage of co-precipitation both the particle size distribution and the chemical composition were not homogeneous; a lead time of about 5 hours under our experiment conditions was necessary to achieve the uniformity in particle shape and chemical composition. The latter was not altered during extended times of co-precipitation; however, a continuous growth of particles resulted in relatively large particles (D50 > 30 μm). The electrochemical performance of the final lithiated cathode materials is reported.
The GSI Control System (1991)

The GSI accelerator facility consists of an old linac and two modern machines, a synchrotron and a storage ring. It is operated from one control room. Only three operators at a time have to keep it running with only little assistance from machine specialists in daytime. So the control tools must provide a high degree of abstraction and modeling to relieve the operators from details on the device level. The program structures to achieve this are described in this paper. A coarse overview of the control architecture is given.
Complex Uranyl Dichromates Templated by Aza-Crowns (2018)

Three new uranyl dichromate compounds templated by aza-crown templates were obtained at room temperature by evaporation from aqueous solutions: (H2diaza-18-crown-6)2[(UO2)2(Cr2O7)4(H2O)2](H2O)3 (1), (H4[15]aneN4)[(UO2)2(CrO4)2(Cr2O7)2(H2O)] (H2O)3.5 (2) and (H4Cyclam)(H4[15]aneN4)2[(UO2)6(CrO4)8(Cr2O7)4](H2O)4 (3). The use of aza-crown templates made it possible to isolate unprecedented and complex one-dimensional units in 2 and 3, whereas the structure of 1 is based on simple uranyl-dichromate chains. It is very likely that the presence of relatively large organic molecules of aza-crown ethers does not allow uranyl chromate chain complexes to condense into the units of higher dimensionality (layers or frameworks). In general, the formation of 1, 2, and 3 is in agreement with the general principles elaborated for organically templated uranyl compounds. The negative charge of the [(UO2)(Cr2O7)2(H2O)]2−, [(UO2)2(CrO4)2(Cr2O7)2(H2O)]4− and [(UO2)3(CrO4)4(Cr2O7)2]6− one-dimensional inorganic motifs is compensated by the protonation of all nitrogen atoms in the molecules of aza-crowns.
Investigating NOx Concentrations on an Urban University Campus Using Passive Air Samplers and UV–Vis Spectroscopy (2018)

Gas-phase nitrogen oxides are important in the formation of tropospheric ozone. NOx (NO and NO2) as well as tropospheric ozone have been shown to have negative effects on human health. Therefore, accurately measuring NOx concentrations in the atmosphere is important. In this laboratory experience, students measured ambient NOx concentrations using a relatively simple and inexpensive passive sampling/UV–vis spectroscopy technique. The students used two different types of spectrophotometers to determine limits of detection and ambient NOx concentrations. Data demonstrated both spectrometers behaved similarly, proving laboratories utilizing different spectrophotometers could accurately perform the experiment. Although not statistically verified due to the limited number of passive samplers employed in the pilot experiment, measured NOx concentrations were similar to those calculated by a local air quality model (within approximately 50 parts per billion). At the end of the laboratory experience, students compared their measured NO2 concentrations to the United States Environmental Protection Agency’s primary and secondary standard of 53 parts per billion (annual mean). The initial learning goals of the experiment included the following: the successful creation of calibration curves, the determination of spectrophotometer limit of detection, and the calculation of ambient NOx concentrations. The experiment is appropriate for students enrolled in analytical and environmental chemistry courses.
The rôle of plasma oxide in InP MIS structures (1984)

Silicon dioxide formed by a plasma assisted reaction at 250 °C between silane and nitrous oxide, has been deposited either directly or on a plasma oxide layer grown formely on the InP substrate, to realize a MIS structure. The quality of the plasma oxide layer (≤ 100 A) is demonstrated through its effect on the rigidity of the MIS structure. Interface state densities on unannealed structures which include plasma oxide, is 1012 cm -2 eV-1. Furthermore, the slow states located at the SiO 2/plasma oxide interface are minimized when the transition between the two oxides is abrupt. Factors of improvement are finally presented : annealing procedure, reaction temperature, composition of reacting gases.
Long-term management of patients taking immunosuppressive drugs (2009)

The number of patients taking immunosuppressive drugs for the management of autoimmune inflammatory conditions is increasing. The general practitioner needs to be active in preventing, monitoring and managing the adverse effects of these drugs even long after the treatment has ceased. monitoring is required because immunosuppressive drugs increase the risks of infection, malignancy, cardiovascular disease and bone marrow suppression. Some drugs have additional risks which require specific monitoring. Vigilance is needed as adverse effects may have atypical clinical presentations.
Inductive Tracking Methodology for Wireless Sensors in Photoreactors (2021)

In this paper, we present a methodology for locating wireless sensors for the use in photoreactors. Photoreactors are, e.g., used to cultivate photosynthetic active microorganisms. For measuring important parameters like, e.g., the temperature inside the reactor, sensors are needed. Wireless locatable floating sensors would enable it to measure the data anywhere inside the reactor and to get a spatial resolution of the registered data. Due to the well defined propagation properties of magnetic fields and the fact that they are not significantly influenced in underwater environments when using low frequencies, a magnetic induction (MI) system is chosen for the data transmission as well as for the localization task. We designed an inductive transmitter and a receiver capable of measuring the magnetic field in every three spatial directions. The transmitting frequency is set at approx. 300kHz. This results in a wavelength of approx. 1km which clearly exceeds the dimensions of our measurement setup where the transmitter-receiver distances in general are lower than one meter. Due to this fact, only the quasi-static field component has to be considered and the location of the transmitter is calculated by measuring its magnetic field at defined positions and in using the magnetic dipole field equation in order to model its magnetic field geometry. The used measurement setup consists of a transmitter and two receivers. The first measurements were performed without a water filled photoreactor since no differences in the propagation criteria of magnetic fields are expected due to the negligibly low differences in the relative magnetic permeability of water and air. The system is calibrated and validated by using a LIDAR depth camera that is also used to locate the transmitter. The transmitter positions measured with the camera are therefore compared with the inductively measured ones.
Wideband Optimization Process for EM Characterization of Low-Losses Dielectric and Dispersive Materials in a Quasi-TEM Cell (2018)

This paper presents an original wideband method (from 1 MHz to 1 GHz) for the characterization of dielectric and dispersive materials. The method is based on a full-wave calculation technique using the finite-difference time-domain (FDTD) method combined with a fast optimization process. The S-parameters are the metrics which have to be minimized. Only two S-parameters measurements of a quasi-TEM structure with and without the sample under test (SUT) are required. In parallel, the experiment is faithfully reproduced by simulation through the FDTD method still without and with the SUT model. This enables to determine the electromagnetic properties of the SUT by adjusting its properties in simulation in order to match the measured S-parameters of the cell thanks to the optimization process. The main advantage of the proposed method lies in the fact that no machining process of the sample is required provided that: 1) the size of the sample enables to insert it within the quasi-TEM cell; 2) the position of the SUT in the propagating device is known accurately; and 3) the insertion of the SUT sufficiently modifies the S-parameters of the quasi-TEM structure. The experimental results obtained on different dielectrics or ferrite samples are provided showing excellent agreements with results given in the literature or by the manufacturers.
Biosynthesis and Biological Effects of 5‐oxo‐ETE and Other Oxoeicosatetraenoic Acids (2004)

This chapter contains sections titled: Introduction 15-oxoeicosanoids 12-oxoeicosanoids 5-oxoeicosanoids Conclusions References
Ionized air for applying radial potential gradient in capillary electrophoresis (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIonized air for applying radial potential gradient in capillary electrophoresisChin Tiao. Wu, Cheng S. Lee, and Cary J. MillerCite this: Anal. Chem. 1992, 64, 19, 2310–2311Publication Date (Print):October 1, 1992Publication History Published online1 May 2002Published inissue 1 October 1992https://pubs.acs.org/doi/10.1021/ac00043a023https://doi.org/10.1021/ac00043a023research-articleACS PublicationsRequest reuse permissionsArticle Views56Altmetric-Citations15LEARN 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
Electrical restoration of the micturition reflex (1974)

Numerous attempts at electrical stimulation of the detrusor muscle of the urinary bladder to evoke contraction and evacuation have been carried out over the past decade. A review of prostheses for the restoration of urinary continence and for effecting bladder evacuation, is given. Problems encountered during detrusor stimulation to effect voiding such as pain and increased urethral resistance are due to current spread to the surrounding pelvic structures. To restrict this current spread, sequentially activated multiple bipolar electrodes are employed. The development of a three-channel vesical stimulator to realize sequential pulsing is described. The inductively coupled device is externally controlled and totally implantable. The system used is believed by the author to be a unique method for transmitting three simultaneous and independent signals successfully to the simple type of receiver used. The good correlation between theoretical and practical results enables the theory developed to be used to predict the performance of coupled coils. The successful clinical trial of the stimulator in an animal and the good current restricting properties of the device indicate that the system used is a feasible method for the treatment of urinary retention following paraplegia.
Efficient Access to Novel Mono- and Disubstituted Pyrido[3,2-d]pyrimidines (2006)

International audience
Low risk of late post-traumatic seizures following severe head injury: implications for clinical trials of prophylaxis. (1983)

A randomised, controlled, double-blind clinical trial designed to determine the effectiveness of phenytoin in preventing epilepsy in patients who had suffered a serious head injury is reported. One hundred and sixty-four patients were randomly assigned to treatment with phenytoin or placebo capsules for one year. Patients who had a fit within one week of injury were excluded. Drug levels were monitored throughout with appropriate dosage adjustment; however only 48% of the phenytoin group had plasma levels greater than 40 mumol/l. There were seven deaths during the study. Only 11 patients (six in the phenytoin group and five in the placebo group) developed post-traumatic epilepsy within one year; a further four patients developed seizures between 1 and 2 years after injury. This low incidence of post-traumatic epilepsy (7% (SE 2%) at one year and 10 (SE 2%) at two years) means that future clinical trials of prophylaxis will have to be much larger (at least six fold).
Lattice Reduction Aided Preceding Based on Seysen's Algorithm for Multiuser MIMO Systems (2009)

Lenstra-Lenstra-Lovasz (LLL) algorithm, which is one of the lattice reduction (LR) techniques, has been extensively used to obtain better bases of the channel matrix. In this paper, we jointly apply Seysen's lattice reduction Algorithm (SA), instead of LLL, with the conventional linear precoding algorithms. Since SA obtains more orthogonal lattice bases compared to those obtained by LLL, lattice reduction aided (LRA) precoding based on SA algorithm outperforms the LRA precoding with LLL. Simulation results demonstrate that a gain of 0.5dB at target BER of is achieved when SA is used instead of LLL or the LR stage.
Lymphocytic Choriomeningitis Virus: Reemerging Central Nervous System Pathogen (2000)

Lymphocytic choriomeningitis virus (LCMV), a human zoonosis caused by a rodent-borne arenavirus, has been associated with both postnatal and intrauterine human disease. Infection in man is acquired after inhalation, ingestion, or direct contact with virus found in the urine, feces, and saliva of infected mice, hamsters, and guinea pigs. Congenital LCMV infection is a significant, often unrecognized cause of chorioretinitis, hydrocephalus, microcephaly or macrocephaly, and mental retardation. Acquired LCMV infection, asymptomatic in approximately one third of individuals, is productive of central nervous system manifestations in one half of the remaining cases. Aseptic meningitis or meningoencephalitis are the predominant syndromes, although transverse myelitis, a Guillain-Barré-type syndrome, as well as transient and permanent acquired hydrocephalus have also been reported. Fatalities are rare. We report a patient with meningoencephalitis attributable to LCMV and discuss the spectrum of central nervous system disease, newer diagnostic modalities, and preventive strategies. lymphocytic choriomeningitis virus, aseptic meningitis, meningoencephalitis, zoonosis, hydrocephalus, arenavirus.