gebhart/patrepeval huggingface dataset:
Rigid-body transformation of list-mode projection data for respiratory motion correction in cardiac PET (2005)

High-resolution cardiac PET imaging with emphasis on quantification would benefit from eliminating the problem of respiratory movement during data acquisition. Respiratory gating on the basis of list-mode data has been employed previously as one approach to reduce motion effects. However, it results in poor count statistics with degradation of image quality. This work reports on the implementation of a technique to correct for respiratory motion in the area of the heart at no extra cost for count statistics and with the potential to maintain ECG gating, based on rigid-body transformations on list-mode data event-by-event. A motion-corrected data set is obtained by assigning, after pre-correction for detector efficiency and photon attenuation, individual lines-of-response to new detector pairs with consideration of respiratory motion. Parameters of respiratory motion are obtained from a series of gated image sets by means of image registration. Respiration is recorded simultaneously with the list-mode data using an inductive respiration monitor with an elasticized belt at chest level. The accuracy of the technique was assessed with point-source data showing a good correlation between measured and true transformations. The technique was applied on phantom data with simulated respiratory motion, showing successful recovery of tracer distribution and contrast on the motion-corrected images, and on patient data with C15O and 18FDG. Quantitative assessment of preliminary C15O patient data showed improvement in the recovery coefficient at the centre of the left ventricle.
Endothelins produced by endothelial cells promote collagen gel contraction by fibroblasts. (1991)

Endothelial 1 (E1) is identified as an endothelial cell secreted factor that stimulates collagen gel contraction by fibroblasts. This identification is based on (a) co-localization of stimulatory activity in endothelial cell conditioned media with synthetic E1 in reversed phase analysis; (b) removal of the activity from conditioned media with antiserum directed against E1; and (c) the activity of synthetic E1. Treatment of endothelial cell conditioned media with immobilized anti-E1 antibodies removed 59% of the activity from the pool suggesting that E1 is the major contraction promoter in endothelial cell conditioned medium. The mechanism of action of E1 is shown to be different from serum in that E1-promoted contraction is dependent upon the synthesis of an unknown effector protein. Synthetic E1 is shown to be a potent promoter of gel contraction with half-maximal activity occurring at 32 pM. Two other endothelins, E2 and VIC, are slightly less active than E1. A fourth endothelin species, E3, is substantially less active. A comparison of E1 with other contraction promoting peptides revealed that E1 and platelet-derived growth factor are essentially equal in specific activity, whereas TGF beta is approximately 50-fold more potent.
Wireless technologies for Body Area Networks: Characteristics and challenges (2012)

Body Area Networks (BANs) are an exciting new networking technology expected to cause a dramatic shift on the way people think and manage their health and the way they benefit from information technology and advancements in a wide range of medical and non-medical applications. Since BANs are in the early stages of their development, a number of fundamental features and challenges need to be investigated to overcome the stringent requirements tied with this technology. Also the choice of an appropriate wireless technology is required to enable BAN systems to communicate physiological data. This paper provides an overview of existing wireless technologies applicable to BANs. The specific features of each wireless technology is described along with their major advantages, drawbacks and most appropriate application in BANs. Comparison of the described technologies are provided from different aspects of frequency range, data rate, coverage area, modulation technique and network topology.
Synthesis, Characterization, and Polymerization Kinetics of Novel Ladder‐Like Polysilsesquioxanes Containing Side‐Chain Propyl Methacrylate Groups (2003)

Abstract Three ladder‐like polysilsesquioxanes containing side‐chain propyl methacrylate groups have been synthesized successfully by stepwise coupling polymerization. The prepared ladder‐like polymers are polysilsesquioxanes containing 100 mol‐% propyl methacrylate side groups and two copolymers containing 70 mol‐% methyl or phenyl groups and 30 mol‐% propyl methacrylate side groups. They were characterized by FT‐IR, 1 H NMR, proton‐decoupled 13 C NMR, and 29 Si NMR spectroscopies, gel‐permeation chromatography (GPC), wide‐angle X‐ray diffraction (XRD), differential scanning calorimetry (DSC), and thermo‐gravimetric analysis (TGA). Characterization data indicate that these polymers have ordered ladder‐like structures with possible defects. At appropriate conditions, crystals of homopolymer were grown and are in the shape of a parallelogram. All three polymers were cured by 2,2′‐azoisobutyronitrile (1% w/w) and the kinetics for the bulk polymerization of these polysilsesquioxanes was followed by dynamic DSC method. Ozawa and Kissinger methods were used to calculate the activation energy for curing. Both the frequency factor and the activation energy of the homopolymer were found to be higher than the copolymers. Cured samples had a higher thermal stability than uncured samples. Chemical structure of LPS. image Chemical structure of LPS.
Test structures to measure the Seebeck coefficient of CMOS IC polysilicon (1997)

We report on two thermal characterization structures to measure the Seebeck coefficient /spl alpha/ of CMOS IC polysilicon thin films relevant for integrated thermal microtransducers. The test structures were fabricated using a commercial 1.2 /spl mu/m CMOS process of Austria Mikro Systeme (AMS). The fabrication of the first structure relies on silicon micromachining. In contrast the second, planar, structure is ready for measurement after IC fabrication. The temperature dependent /spl alpha/ of the two polysilicon layers of the AMS process was measured with both devices. The agreement between the thermoelectric coefficients obtained with the two types of structures is better than 2.1 /spl mu/V at 300 K.
Late seed migration after prostate brachytherapy with Iod-125 permanent implants (2017)

Beside a frequent number of seed losses, seed migration 3 or more years after implantation was as well a frequent finding but seems to be asymptomatic. Long-term follow-up with complementary radiological controls could be helpful in detecting any rare complications.
TREM-1 Signaling Promotes Host Defense during the Early Stage of Infection with Highly Pathogenic Streptococcus suis (2015)

Infection with highly pathogenic Streptococcus suis can cause septic shock, which is characterized by high levels of inflammatory cytokines and a high mortality rate. Our previous study indicated that TREM-1 (triggering receptor expressed on myeloid cells 1) was upregulated in swine spleen cells in response to S. suis infection. The role of TREM-1 signaling in enhancement of the proinflammatory response promoted us to examine its effect on the outcome of S. suis infection. In the present study, the recombinant extracellular domain of TREM-1 (rTREM-1) and an agonistic TREM-1 antibody were used to inhibit and activate TREM-1 signaling to evaluate its role in neutrophil activation, pathogen clearance, proinflammatory cytokine response, and the outcome of highly pathogenic S. suis infection in a mouse model. Blockage of TREM-1 signaling caused a more severe proinflammatory response to S. suis infection and increased the mortality rate, while its activation had the opposite effect. Blockage or activation of TREM-1 signaling lowered or raised the number of neutrophils in the blood, which correlated well with host clearance of S. suis. In conclusion, the TREM-1-mediated innate immune response played an essential role in the activation of neutrophils and S. suis clearance, which further reduced severe inflammation and finally benefited the outcome of the infection.
Rearrangement of band q13 on both chromosomes 12 in a periosteal chondroma (1993)

Cytogenetic analysis of a recurrent periosteal chondroma revealed nonreciprocal translocations of both chromosomal segments 12q13-->qter, from one chromosome 12 to 7q32 and from the homologous chromosome 12 to 16q22. The remaining parts of the two chromosomes 12 formed a dicentric chromosome. This is the second reported chondroma with a 12q13-15 rearrangement, and changes of this chromosome region consequently seem to be nonrandom occurrences in chondromas.
Shorter south coast train transit times (2017)

The paper outlines the development of the South Coast railway linking Sydney through Wollongong to Bomaderry that was completed in 1893 as single track for most of its length. During the 1914-1920 period, duplication and grade easing between Waterfall and Coacliff was completed at the expense of 4.96 km of additional distance and with continuous tight radius curves. This paper starts from the premise that a 60 minute journey time between Sydney and Wollongong is seen as a 21st Century commuting expectation. The authors look at the achievable gains for train operations arising from realignment through the most difficult section south of Waterfall, following which they comment on other strategies that would reduce commuting times. The paper identifies that this realignment would be a necessary but incomplete solution, although addition of some other infrastructure and operational improvements would provide the foundation for reduction of existing 90 minute timings between Sydney and Wollongong to the desired 60 minutes. The authors also comment on the partly completed 35 kilometre Maldon to Dombarton freight rail link as a means of relieving pressure on passenger train running on the South Coast line as a result of reducing mixed train types over the existing difficult route.
On eliminating crosstalk within multiconductor transmission lines (2004)

This letter presents a concept of total elimination of crosstalk between signals propagating in multiconductor transmission lines. It is sufficient to match the line on both ends with a proper net of resistances and assure a proper distribution of each exciting signal into some of the branches of the input net. The concept is verified using SPICE circuit simulator.
Simple meshing and efficient numerical analysis of curved surfaces using a new quadrilateral basis function (2002)

In this paper, a quadrilateral roof-top type of basis function is presented. Four arbitrary and not necessarily coplanar points establish the associated curved basis function surface. In addition to this, the defined current density is conveniently decomposed into sinusoidally excited strips, vastly reducing the computation time required to determine the associated near zone-field. Moderately curved geometries can be easily meshed by projecting a rectangular grid unto the surface, while fulfilling the objective of quasi-orthogonal current densities on each basis function. To demonstrate the capabilities of the proposed basis function, a case study is presented where the current density induced on the curved surface of a paraboloid is determined using the method of moments. The corresponding results are shown to agree very well with the known correct solution.
The Structural Identification of the Olefinic Components of Japanese Lac Urushiol<sup>1</sup> (1954)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Structural Identification of the Olefinic Components of Japanese Lac Urushiol1S. V. Sunthankar and Charles R. DawsonCite this: J. Am. Chem. Soc. 1954, 76, 20, 5070–5074Publication Date (Print):October 1, 1954Publication History Published online1 May 2002Published inissue 1 October 1954https://pubs.acs.org/doi/10.1021/ja01649a017https://doi.org/10.1021/ja01649a017research-articleACS PublicationsRequest reuse permissionsArticle Views182Altmetric-Citations63LEARN 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
Design of a 3-V 300-MHz low-power 8-b/spl times/8-b pipelined multiplier using pulse-triggered TSPC flip-flops (2000)

This paper describes the design of a low-power pipelined multiplier. It is illustrated in this paper that the power consumption of the clocking system cannot be overlooked and the design of the storage element is the key to low power. A new pulse-triggered true single-phase clocking (TSPC) flip-flop (PTTFF) is proposed for this purpose in this design. The PTTFF features true single-phase clocking, simple structure, and high performance. One PTTFF comprises only five transistors with only one controlled by the clock. Using the PTTFF together with the 14-transistor pseudo-NMOS full adder, an 8-b/spl times/8-b pipelined multiplier has been designed and implemented, employing a 0.6-/spl mu/m CMOS process. When the multiplier operates at the operating frequency of 300 MHz with VDD equal to 3.3 V, it dissipates only 53% of the power of the multiplier designed with nine-transistor TSPC flip-flops under the same operating conditions. When the supply voltage for the core array is reduced to 2.5 V, the multiplier can still work up to 300 MHz with only 47% of the power of the multiplier designed using the S and D full adders and C/sup 2/MOS latches with VDD equal to 3.3 V. The chip has been fabricated, and the measured power is 52.4 mW when operated at 300 MHz and 3.3 V.
Using IEEE802.15.4e TSCH in an LLN context: Overview, Problem Statement and Goals (2013)

This document describes the environment, problem statement, and goals
for using the IEEE802.15.4e TSCH MAC protocol in the context of LLNs.
The set of goals enumerated in this document form an initial set only.
Modeling Innovation as a Process of Design in Educational Business Simulation (1999)

Though appropriate for teaching other business functions, previous methods of modeling innovation in business simulations are not suitable for teaching the management of innovation. This paper presents a new method of modeling innovation in business simulations: students use marketplace data in attempts to solve a combinatorial optimization problem. The essential properties of innovation â€“ unpredictability, surprise, path-dependence, and probabilistic success â€“ are produced. The method also provides means for simulating technological advance and for measuring core competencies and innovation.
Copper(I), silver(I) and gold(I) complexes with the hybrid ligand 1-(diphenylphosphino)-2-(2-pyridyl)ethane (ppye). Variable-temperature nuclear magnetic resonance investigations and the crystal structure of [Au(ppye-P)2]PF6 (1995)

Copper(I), silver(I) and gold(I) complexes with the ligand 1-(diphenylphosphino)-2-(2-pyridyl)ethane (ppye) of general formula M(ppye)2PF6 have been prepared and characterized by means of IR and multinuclear (1H, 13C and 31P) NMR spectroscopy. The copper(I) and silver(I) complexes are bis(chelate) with a tetrahedral geometry around the metal atom. On the contrary, the gold(I) derivative exhibits a digonal structure with monodentate P-bound ppye ligands co-ordinated to the metal centre. The complex [Au(ppye-P)2]PF6 has been characterized in the solid state by X-ray diffraction analysis. Crystal data: triclinic, space group P, a= 9.972(1), b= 10.299(2), c= 10.521(2)Å, α= 69.90(2), β= 66.03(1), γ= 78.51(1)°, Z= 1, R= 0.039. The gold atom, which lies on a symmetry centre, is linearly co-ordinated by the P atoms of ppye (P–Au–P, 180°). Variable-temperature NMR studies show that the [M(ppye-P,N)2]+ species rearrange in solution by inversion at the tetrahedral metal centre. Furthermore, all three ppye derivatives undergo ligand-exchange processes. The reactions of the cations [M(ppye-P,N)2]+ and [Au(ppye-P)2]+ with ppye have been investigated.
Racial Profiling? A Multivariate Analysis of Police Traffic Stop Data (2001)

Despite the significance of racial profiling as an issue of national concern, little empirical research exists on whether police traffic stop practices disproportionately impact minority drivers. Using data from 2,673 traffic stops conducted by the Richmond, Virginia, Police Department in 2000, this article explores the treatment by police of motorists of different races and ethnic backgrounds. Minority citizens in general, and African Americans in particular, were disproportionately stopped compared with their percentage in the driving-eligible population. However, they were searched no more frequently than Whites; in fact, Whites were significantly more likely than minorities to be the subjects of consent searches. Compared with Whites, and after controlling for variables, minority drivers were more likely to be warned, whereas Whites were more likely to be ticketed or arrested. Examining officer race as a predictor revealed White officers were no more likely than minority officers to stop, search, or arrest minority drivers.
Modeling, Upscaling, and History Matching Thin, Irregularly-Shaped Flow Barriers: A Comprehensive Approach for Predicting Reservoir Connectivity (2006)

Abstract Accurate modeling of flow path connectivity is critical to reservoir flow performance prediction. Flow path connectivity is controlled by the complex shape, extent and spatial relationships between pay intervals, their intersection with wells, and the existence of flow barriers between wells. This reservoir heterogeneity can be captured in a flow simulation model as facies patterns among cells and as effective properties within cells (porosity and permeability). However, fine-scale, irregularly-shaped flow barriers between cells cannot be accurately represented with pixel-based modeling techniques. To preserve these important fine-scale geological features at the flow simulation block scale, an additional modeling variable is introduced as the edge of a model cell. This cell edge is a continuous or categorical value associated with the cell face and is defined in conjunction with the cell centered property which is often reserved for facies types and/or petrophysical properties. An edge model is created that captures the facies and edge properties as a vector of information at each cell location. For the flow simulation model, the edge properties are easily translated into transmissibility multipliers. Using the example of 3D shale-drapes attached to channel-sand bodies in a deep water depositional setting, a methodology is presented in which these shale drapes are accurately upscaled and history matched to production data while maintaining the geological concept that describes the drape geometry. The perturbation parameter in history matching is the continuity of the shales as an edge property. More generally, this coupled modeling of cell-center and cell-edge allows for more flexible reservoir modeling, opening up the potential for modeling and history matching complex geological features effectively at the scale that they are relevant, without additional computational cost of flow simulation.
Properties of Thiolesters: Kinetics of Hydrolysis in Dilute Aqueous Media<sup>1</sup> (1953)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of Thiolesters: Kinetics of Hydrolysis in Dilute Aqueous Media1Lafayette H. Noda, Stephen A. Kuby, and Henry A. LardyCite this: J. Am. Chem. Soc. 1953, 75, 4, 913–917Publication Date (Print):February 1, 1953Publication History Published online1 May 2002Published inissue 1 February 1953https://pubs.acs.org/doi/10.1021/ja01100a041https://doi.org/10.1021/ja01100a041research-articleACS PublicationsRequest reuse permissionsArticle Views345Altmetric-Citations70LEARN 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
Evaluation of Artery Visualizations for Heart Disease Diagnosis (2011)

Heart disease is the number one killer in the United States, and finding indicators of the disease at an early stage is critical for treatment and prevention. In this paper we evaluate visualization techniques that enable the diagnosis of coronary artery disease. A key physical quantity of medical interest is endothelial shear stress (ESS). Low ESS has been associated with sites of lesion formation and rapid progression of disease in the coronary arteries. Having effective visualizations of a patient's ESS data is vital for the quick and thorough non-invasive evaluation by a cardiologist. We present a task taxonomy for hemodynamics based on a formative user study with domain experts. Based on the results of this study we developed HemoVis, an interactive visualization application for heart disease diagnosis that uses a novel 2D tree diagram representation of coronary artery trees. We present the results of a formal quantitative user study with domain experts that evaluates the effect of 2D versus 3D artery representations and of color maps on identifying regions of low ESS. We show statistically significant results demonstrating that our 2D visualizations are more accurate and efficient than 3D representations, and that a perceptually appropriate color map leads to fewer diagnostic mistakes than a rainbow color map.
The effect of synovial iron on the progression of rheumatoid disease (1984)

Seventeen patients with early rheumatoid synovitis underwent synovial biopsy to assess the interrelationship between both ferritin (the intracellular iron storage protein) and Perls' positive iron (ferric iron in loose combination with protein), on the activity and course of rheumatoid disease. The amount of ferritin was associated to a significant degree with the activity of the disease at the time of biopsy, but showed no relation to the way the disease progressed over the following year. In contrast, the amount of Perls' iron bore no relation to the activity of the disease at biopsy, but its presence was associated with persistent disease. It is argued that this association is direct, that ferritin production may fail in a population of synovial macrophages, and that Perls' ferric iron may either be reduced to the ferrous form and promote the formation of toxic free radical species, or stimulate collagenase and prostaglandin release from synovial macrophages.