gebhart/patrepeval huggingface dataset:
An integral quality monitoring system for real‐time verification of intensity modulated radiation therapy (2009)

The prototype IQM system can validate the accuracy of beam delivery in real time by comparing precalculated and measured AIMS signals. The system is capable of capturing errors in MLC leaf calibration or malfunctions in the positioning of an individual leaf. The AIMS does not significantly alter the beam quality and therefore could be implemented without requiring recommissioning measurements.
Augmented reality and artificial intelligence-assisted surgical navigation: Technique and cadaveric feasibility study (2020)

The ARAI surgical navigation system correctly and accurately identified the starting points at all the attempted levels. The virtual anatomy image overlay precisely corresponded to the actual anatomy in all the tested scenarios. This technology may lead more uniform outcomes between surgeons and decrease minimally invasive spine surgery learning curves.
Performance of Hull-Detection Algorithms for Proton Computed Tomography Reconstruction (2015)

Proton computed tomography (pCT) is an imaging modality developed for patients who are receiving proton radiation therapy. The purpose of this work was to investigate hull-detection algorithms used for preconditioning of the large and sparse linear system of equations that needs to be solved for pCT image reconstruction. The hull-detection algorithms investigated here included silhouette/space carving (SC), modified silhouette/ space carving (MSC), and space modeling (SM). Each was compared to the cone-beam version of filtered backprojection (FBP) used for hull-detection. Data for testing these algorithms included simulated data sets of a digital head phantom and an experimental data set of a pediatric head phantom obtained with a pCT scanner prototype at Loma Linda University Medical Center. SC was the fastest algorithm, exceeding the speed of FBP by more than 100 times. FBP was most sensitive to the presence of noise. Ongoing work will focus on optimizing threshold parameters in order to define a fast and efficient method for hull-detection in pCT image reconstruction.
Preparation of Molecular Sieving Carbon from Saran Waste (1981)

The molecular sieve properties and porous structure have been studied for molecular sieving carbon prepared from Saran waste.The Saran char was granulated into sphere, whose diameter being 0.7 mm, by the addition of 23.1 wt % of coal tar pitch and 7.5 wt % of microcrystalline cellulose.Then spherical pellets were heat-treated in a stream of nitrogen.It was found that the carbonization temperature of Saran had no significant effect on the adsorption properties of molecular sieving carbon in the temperature range 600-900 °C.The limiting volume of adsorption space for butane increased with increase of the heating rate of spherical pellets.Molecular sieving carbon from Saran waste adsorbed benzene (3.7 A in thickness, 7.0 A in width), while it did not adsorb isobutane (5.0 A in diameter).These results demonstrate that the pores of molecular sieving carbons are slit-shaped.
A Resource-Efficient Embedded Iris Recognition System Using Fully Convolutional Networks (2019)

Applications of fully convolutional networks (FCN) in iris segmentation have shown promising advances. For mobile and embedded systems, a significant challenge is that the proposed FCN architectures are extremely computationally demanding. In this article, we propose a resource-efficient, end-to-end iris recognition flow, which consists of FCN-based segmentation and a contour fitting module, followed by Daugman normalization and encoding. To attain accurate and efficient FCN models, we propose a three-step SW/HW co-design methodology consisting of FCN architectural exploration, precision quantization, and hardware acceleration. In our exploration, we propose multiple FCN models, and in comparison to previous works, our best-performing model requires 50× fewer floating-point operations per inference while achieving a new state-of-the-art segmentation accuracy. Next, we select the most efficient set of models and further reduce their computational complexity through weights and activations quantization using an 8-bit dynamic fixed-point format. Each model is then incorporated into an end-to-end flow for true recognition performance evaluation. A few of our end-to-end pipelines outperform the previous state of the art on two datasets evaluated. Finally, we propose a novel dynamic fixed-point accelerator and fully demonstrate the SW/HW co-design realization of our flow on an embedded FPGA platform. In comparison with the embedded CPU, our hardware acceleration achieves up to 8.3× speedup for the overall pipeline while using less than 15% of the available FPGA resources. We also provide comparisons between the FPGA system and an embedded GPU showing different benefits and drawbacks for the two platforms.
Oxy-fuel combustion systems for pollution free coal fired power generation (2004)

Jupiter Oxygen’s patented oxy-fuel combustion systems1 are capable of economically generating power from coal with ultra-low emissions and increased boiler efficiency. Jupiter’s system uses pure oxygen as the combustion agent, excluding air and thus nitrogen, concentrating CO2 and pollutants for efficient capture with near zero NOx production, reducing exhaust mass flow, and increasing radiant heat transfer. Flue-gas recirculation rates can be varied to add flexibility to new boiler designs using this technology. Computer modeling and thermal analysis have identified important design considerations in retrofit applications.
Evaluation of Recombinant Platelet Factor 4 and Protamine Sulfate for Heparin Neutralization: Clotting and Clearance Studies in Rat (1994)

Recombinant platelet factor 4 (rPF4) efficiently neutralized heparin anticoagulant activity in rats without the adverse effect of protamine sulfate (PS) (Circulation 1992; 85: 1102). This study confirmed that rPF4 and PS neutralized heparin in rats. In vitro addition of excess PS but not rPF4 to plasma prolonged the activated partial thromboplastin time. Injection of rPF4 or PS 2 min following injection of 3H-heparin augmented loss of radioactivity from the circulation over the first 2 min but did not affect the half life of 3H-heparin for the next 58 min. PS was coupled to 4-(p-Azidosalicylamido)butylamine (ASBA), radioiodinated and purified by means of heparin-agarose chromatography. Heparin prevented the rapid loss of 125I-rPF4 from the circulation within the first 2 min but modestly increased loss of radioiodinated derivatized PS. Heparin extended the half-life of derivatized radioiodinated PS (measured between 2 and 60 min after injection) while modestly shortening that of 125I-rPF4. Both radioiodinated heparin binding proteins accumulated predominantly in liver and kidney. A greater percentage of radioactivity was found in these organs with rPF4 than with PS but more PS was found in urine. A larger percentage of radioiodinated derivatized PS than 125I-rPF4 was undetected. These results indicate that rPF4 and PS affect the kinetics of heparin clearance similarly but that organ deposition of the two agents may differ and offer an explanation of different physiological effects seen previously.
Material Design for High Strength NTC Thermistor Ceramics (2007)

Various factors were investigated to decide the mechanical properties of (Mn1–xNix)3O4 ceramics, that are typical composition systems of NTC (negative temperature coefficient) thermistors. The strength of NTC thermistor ceramics can be improved by designing the material so that the compressive stress may remain at the surface of the ceramics. At high temperature, the thermal expansion coefficient of a rock salt phase segregated internally ceramic increases over that of the spinel phase, further, on the surface of the ceramics, this compressive stress remains below room temperature. Moreover, it was confirmed that the stress analysis result by the FEM corresponded well with the stress measurement result on the surface of the ceramics measured by μ -XRD.
Fabrication of high-field zinc oxide varistors by sol-gel processing (1984)

Advanced ceramic processing techniques were used to fabricate ZnO varistors having grain sizes in the 3 to 4 ..mu..m range, compared to 7 to 13 ..mu..m in commercial devices. The fine-grained varistors exhibited high breakdown fields, compared to commercial materials. Processing steps included synthesis of highly active powders by sol-gel techniques and hot pressing at temperatures below about 800/sup 0/C in a reducing environment to achieve high density. Heat treatment in air at temperatures up to 1000/sup 0/C fully developed the nonohmic electrical properties. 13 references, 6 figures, 4 tables.
Precipitation of Monodispersed Silver Halide Emulsions Using Water‐Soluble Ortho‐Substituted Aryl Disulfides (2005)

Abstract Silver bromoiodide photographic emulsions were precipitated using water‐soluble aryl disulfides. The emulsions studied were sub‐micron regular (nontabular) crystals containing less than 5% iodide, precipitated with ammonia and/or thioether. When compared to their para‐substituted counterparts, water‐soluble ortho‐substituted aryl disulfides provided improved monodispersity along with no observed formation of large tabular grains. A proposed mechanism for the decreased ripening effect of the ortho‐substituted isomer involved an in situ reduction of the disulfide to a ring‐closed species that did not interact with silver ion.
Block copolymer assisted refractive index engineering of metal oxides for applications in optical sensing (2014)

We demonstrate that the refractive indices of important functional metal oxides (TiO2, SnO2, and ZnO) can be engineered “at will” for applications in photonics engineering. The tailoring of the refractive indices is accomplished by 3D nanostructuring in the sub-wavelength regime (50nm or less) using the method of block-copolymer templating combined with a low cost solution processing approach. Using this method, the index of refraction of the demonstrated metal oxides and their doped variants can be engineered to be as low as 1.25. We will present both numerical simulations and experimental data demonstrating the unrestricted integration of functional metal oxides with a D-shaped optical fiber for applications in chemical and biological sensing. Using the developed refractive index engineering scheme, we introduce a novel hydrogen sensor by integrating a palladium doped TiO<sub>2 </sub> nanomaterial with D-shaped optical fiber and provide sensor characterization up to 700°C for applications in the energy sector.
Preparation and Properties of Triiodide-, Pentaiodide-, and Heptaiodide-Quaternary Ammonium Stron Base Anion-Exchange Resin Disinfectants (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Properties of Triiodide-, Pentaiodide-, and Heptaiodide-Quaternary Ammonium Stron Base Anion-Exchange Resin DisinfectantsJack L. Lambert, Gary T. Fina, and Louis R. FinaCite this: Ind. Eng. Chem. Prod. Res. Dev. 1980, 19, 2, 256–258Publication Date (Print):June 1, 1980Publication History Published online1 May 2002Published inissue 1 June 1980https://doi.org/10.1021/i360074a025RIGHTS & PERMISSIONSArticle Views820Altmetric-Citations43LEARN 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 (353 KB) Get e-Alerts
Robust image transmission using source adaptive modulation and trellis-coded quantization (2003)

The paper presents a robust, low-complexity method of transmitting digitally compressed imagery through very noisy channels. The method is applicable to AWGN and fading channels. The proposed method uses a robust wavelet based image coder employing trellis-coded quantization (TCQ), and optimal source adaptive modulation (SAM) which is implemented through time-frequency diversity. We compare the performance of the SAM-TCQ system to that of a system that utilizes unequal error protection (UEP). We show that for the binary symmetric channel (BSC), the SAM-TCQ system performs as well as UEP-TCQ at high bit error rates (BER), and within 1 dB of the UEP-TCQ system at low bit error rates.
New Procedures for Purifying TNT (1982)

Abstract Ammonium and magnesium sulfites were tested for purifying crude TNT in comparison with the conventional (“sellite”) process using sodium sulfite. The magnesium process easily gave an acceptable product in better yield, of higher quality, and at lower estimated cost. Magnesium values suitable for recycle were recovered from the waste water by calcination. The ammonium process gave an acceptable product only under specific reaction conditions, but the waste water can be recovered by mixing it with TNT process spent sulfuric acid, thereby eliminating a calcination step.
Efficient LTE PDCP buffer management (2015)

Long Term Evolution (LTE) evolved Node Bs (eNB) have dedicated buffers for each Radio Access Bearer (RAB) implemented at the Packet Data Convergence Protocol (PDCP) layer to receive and prepare user data for transmission over the air interface. These buffers multiplex the connections established by the active applications of a single user. Modern applications use the Transmission Control Protocol (TCP) that has a greedy mechanism to transfer data by trying to use all the available resources. If not managed, TCP sources may send large bursts that may eventually overload the PDCP buffer causing tail drops and quality degradation. In order to prevent these incidents, buffer management mechanisms are required. As this paper shows, neither the standard 3GPP Discard Timer nor the conventional Active Queue Management (AQM) techniques are able to properly manage the PDCP buffer. As a solution, two alternative mechanisms are proposed, which are more suited to the PDCP specific environment. Their superior performance is shown with detailed simulations.
COMBINATIONS OF TY RESISTANCE GENES GENERALLY PROVIDE MORE EFFECTIVE CONTROL AGAINST BEGOMOVIRUSES THAN DO SINGLE GENES (2015)

Begomoviruses are a major threat to tropical and subtropical tomato production, worldwide. Host resistance provides an effective strategy for reducing yield losses associated with these viruses. Resistance has been introgressed into cultivated tomato (Solanum lycopersicum L.) primarily from a number of wild tomato relatives, and the major resistance genes available to breeders today include Ty-1 (and its allele, Ty-3), Ty-2, Ty-4, ty-5, and a recently-identified gene tentatively named âTy-6â. Important to the effective and efficient deployment of resistant cultivars is an understanding of each resistance alleleâs effect when used alone and when combined with other resistance genes. Ty-1 and Ty2 are both dominant and, where effective, provide a high level of resistance; whereas the other genes provide partial resistance and are additive to partially dominant or recessive as with ty-5. Two- and three-gene combinations of Ty-3, Ty-4, and ty-5 in semi-isogenic backgrounds provided high levels of resistance to Tomato yellow leaf curl virus (TYLCV). Tomato mottle virus (ToMoV) trials in Florida using the same materials were severe, but indicated that Ty-3 and Ty-4 had small but significant effects in lowering ToMoV disease severity but, ty-5 did not. In two additional populations segregating for both ty-5 and âTy-6â that were inoculated with ToMoV, ty-5 had no significant effect on resistance. Combining âTy-6â and ty-5 homozygously provided a high level of resistance to TYLCV while the combination of homozygous ty-5 with heterozygous âTy-6â was also good, but not as resistant as the former.
Arc Fault Detection through Model Reference Estimation (2006)

In most arc fault circuit breakers, arc detection is accomplished through the signature analysis of remotely sensed branch currents, with high frequency spectral components being indicative of arcing. This paper presents an alternative approach based upon system identification. A model is assumed for the load on the distribution bus. This model is updated continuously by comparing measured voltages and/or currents to the values predicted by the model. The resulting prediction errors are used to adjust the model in real time. In aviation loads, even in nonlinear loads that are rapidly and repetitively engaged and disengaged, we find that the model successfully adapts to give a good description of the load. However, when an arcing fault is present, its chaotic nature prevents a successful model identification and the prediction errors remain large. The large, continuous prediction errors provide a means of fault identification in a short time and with a high level of confidence.
Planar fiber optic acoustic sensors (1990)

Piezoactivity in polymers such as polyvinylidene fluoride (PVF2) has been successfully utilized as the transduction mechanism for achieving flexible acoustic sensors. The small electric output of the piezoactive polymers, however, must be amplified at the wet end and is subject to electromagnetic interference.
Genomic fingerprinting for epidemiological differentiation of Staphylococcus aureus clinical isolates (1996)

We used genomic fingerprinting to investigate an outbreak of methicillin-resistant Staphylococcus aureus in the neonatal intensive care units (NICUs) of two hospitals. The hospitals are located in the same city and are part of the same medical care system. Fingerprinting was done by Southern blot hybridization with DNA probes for the genes encoding the S. aureus collagen adhesin (cna), fibronectin-binding proteins (fnbA and fnbB), and beta-toxin (hlb). Genomic DNA was digested with HaeIII (cna and fnbA-fnbB probes) or HindIII (hlb probe). Hybridization patterns could be distinguished on the basis of (i) the presence or absence of cna, (ii) the size of the restriction fragment containing the cna gene, (iii) restriction fragment length polymorphisms within fnbA and fnbB, (iv) the presence of a lysogenic phage within hlb, and (v) the sizes of the restriction fragments containing the phage-bacterial DNA junction fragments. Over a period of 4 months we examined a total of 46 isolates obtained from various wards within each hospital. Among these 46 isolates, we observed a total of 4 cna patterns, 11 fnbA-fnbB patterns, and 11 hlb patterns. Southern blots with HaeIII-digested genomic DNA and a combination of all three gene probes revealed a total of 16 clearly distinguishable patterns. A total of 22 of the 46 isolates were identical with respect to every genomic marker examined. A total of 21 of these 22 isolates were obtained from patients within an NICU. Nineteen of 21 isolates also exhibited identical antibiotic resistance profiles (antibiogram). Although 5 of the remaining 24 strains exhibited an antibiogram identical to those of the NICU isolates, all 24 strains could be distinguished from the NICU isolates by at least one genomic marker. These results suggest that the NICU isolates had a common origin and that genomic fingerprinting with the cna, fnbA, fnbB, and hlb gene probes can provide an important epidemiological tool for the identification of clinical isolates of S. aureus.
Synthesis and reactions of 2,3‐diamino‐4(3<i>H</i>)‐pyrimidinones and 3‐amino‐2‐hydrazino‐4(3<i>H</i>)‐pyrimidinones. I (1984)

Abstract A series of new 2,3‐diamino‐4‐pyrimidinones and 3‐amino‐2‐hydrazino‐4‐pyrimidinones were synthesized by the reactions of β‐ketoesters with amino or diaminoguanidines.
Design considerations and performance evaluation of a 3 kW, soft-switched boost converter with active snubber (2002)

The paper provides a complete design procedure of a high-power-factor (HPF) boost converter which employs an active snubber to reduce reverse-recovery related losses of the boost rectifier and achieve zero-voltage switching (ZVS) of the boost switch. The losses are reduced by inserting an inductor in the series path of the boost rectifier to reduce the di/dt rate during its turn-off. Extensive experimental evaluations of the performance of a 3 kW prototype for telecommunication applications operating from a 220 V/sub rms//spl plusmn/20% input are presented. The evaluation results demonstrate that the HPF boost converter can operate at 100 kHz switching frequency with an efficiency in the 94-97% range at full power.
Blood Pressure-lowering Effect of Extract from<i>Lactobacillus casei</i>in Spontaneously Hypertensive Rats (SHR) (1990)

The effects of oral administration of hot water extract from autologous lysate of Lactobacillus casei (LEx) on the systolic blood pressure (SBP) were studied in spontaneously hypertensive rats (SHR). Oral doses of 10 mg/kg of LEx produced a significant decrease of the SBP of SHR, but LEx had no effect in normotensive rats. The long-term administration of LEx (1 or 10 mg/kg/day) to SHR from 5 to 17 weeks after birth suppressed the development of hypertension. LEx dialysed against distilled water was separated into a polysaccharide fraction (SG-1), a protein fraction (PR-1), and a nucleic acid fraction (NA-1), and SBP-lowering effects of these materials were investigated in SHR at the same dose (10mg/kg). The most effective material of these three was SG-1.
Larch Arabinogalactan for Dry Eye Protection and Treatment of Corneal Lesions: Investigations in Rabbits (2007)

These findings suggest that AG may be a potential therapeutic product for dry eye protection and for the treatment of corneal wounds.
Detecting small amplitude signal and transit times in high noise: Application to hydraulic fracture monitoring (2009)

A workflow is presented for the automatic detection and accurate time picking of weak events, such as microseismicity induced by hydraulic fracturing, in data collected by an array of multi-component acoustic sensors. These events are embedded in strong noise that could be spatially and temporally correlated. The proposed workflow comprises two steps. In the first, a new statistical test is applied to detect the time windows that contain coherent arrivals across components and sensors in the multicomponent array and to indicate the confidence in this detection. The second is a time-picking step to accurately estimate the onset time of the arrivals detected above and measure the time delay across the array using a novel hybrid beamforming method incorporating the use of higher order statistics. Such an approach is designed to significantly improve the number of events that are detected as well as the level of noise that can be handled. In the context of hydraulic fracturing, this could enhanced the coverage and mapping of the fractures. Examples on real field data are presented indicating the effectiveness of this workflow.
A high sensitivity, wide dynamic range magnetometer designed on a xylophone resonator (1996)

A novel magnetometer based on a classical xylophone resonator is described. The device consists of an aluminum bar supported by two wires placed at the nodal points of the fundamental resonance frequency. The wires also supply current of this frequency to the bar. In the presence of a magnetic field, the Lorentz force causes the resonator to vibrate. The amplitude of this vibration is proportional to a vector component of the magnetic field. The device is intrinsically linear, and by altering the drive current the sensitivity can range from nanoteslas to teslas.