gebhart/patrepeval huggingface dataset:
Circularly polarized microwave antenna for nitrogen vacancy centers in diamond (2020)

The sensing applications of nitrogen-vacancy color centers in a diamond require an efficient manipulation of the color center ground state over the whole volume of an ensemble. Thus, it is necessary to produce strong uniform magnetic fields of a well-defined circular polarization at microwave frequencies. In this paper, we develop a circularly polarized microwave antenna based on the excitation of hybrid electromagnetic modes in a high-permittivity dielectric resonator. The influence of the geometrical parameters of the antenna on the reflection coefficient and magnetic field magnitude is studied numerically and discussed. The Rabi frequencies and their inhomogeneity over the volume of a commercially available diamond sample are calculated. With respect to the numerical predictions, a Rabi frequency as high as 34 MHz with an inhomogeneity of 4% over a 1.2 mm × ∅2.5 mm (5.9 mm<sup>3</sup> in volume) diamond sample can be achieved for 10 W of input power at room temperature. The antenna prototype is fabricated, and experimental investigations of its characteristics are performed in microwave and optical frequency domains. The circular polarization of the microwave magnetic field with an ellipticity of 0.94 is demonstrated experimentally. The Rabi oscillation frequency and its inhomogeneity are measured, and the results demonstrate a good agreement with the numerically predicted results.
Artificial Impostors for Location Privacy Preservation (2018)

The progress of location-based services has led to serious concerns on location privacy leakage. For effective and efficient location privacy preservation (LPP), existing methods are still not fully competent. They are often vulnerable under the identification attack with side information, or hard to be implemented due to the high computational complexity. In this paper, we pursue the high protection efficacy and low computational complexity simultaneously. We propose a scalable LPP method based on the paradigm of counterfeiting locations. To make fake locations extremely plausible, we forge them through synthesizing artificial impostors (AIs). The AIs refer to the synthesized traces which have similar semantic features to the actual traces, and do not contain any target location. Two dedicated techniques are devised: the sampling-based synthesis method and population-level semantic model. They play significant roles in two critical steps of synthesizing AIs. We conduct experiments on real datasets in two cities (Shanghai, China and Asturias, Spain) to validate the high efficacy and scalability of the proposed method. In these two datasets, the experimental results show that our method achieves the preservation efficacy of $97.65\%$ and $96.12\%$, and its run time of building the generators is only $230.47$ and $215.92$ seconds, respectively. This study would give the research community new insights into improving the practicality of the state-of-the-art LPP paradigm via counterfeiting locations.
Robust segmentation of tubular structures in 3-D medical images by parametric object detection and tracking (2003)

We present a novel approach to the coarse segmentation of tubular structures in three-dimensional (3-D) image data. Our algorithm, which requires only few initial values and minimal user interaction, can be used to initialize complex deformable models and is based on an extension of the randomized hough transform (RHT), a robust method for low-dimensional parametric object detection. Tubular structures are modeled as generalized cylinders. By means of a discrete Kalman filter, they are tracked through 3-D space. Our extensions to the RHT are a feature adaptive selection of the sample size, expectation-dependent weighting of the input data, and a novel 3-D parameterization for straight elliptical cylinders. Experimental results obtained for 3-D synthetic as well as for 3-D medical images demonstrate the robustness of our approach w.r.t. image noise. We present the successful segmentation of tubular anatomical structures such as the aortic arc and the spinal cord.
Second-harmonic generation in periodically poled silicon waveguides with lateral p-i-n junctions: publisher’s note (2020)

This publisher's note contains corrections to Opt. Lett.45, 3188 (2020)OPLEDP0146-959210.1364/OL.391988.
A Low Cost, High Capacity Regenerable Sorbent for Pre-combustion CO<sub>2</sub> Capture (2012)

The overall objective of the proposed research is to develop a low cost, high capacity CO{sub 2} sorbent and demonstrate its technical and economic viability for pre-combustion CO{sub 2} capture. The specific objectives supporting our research plan were to optimize the chemical structure and physical properties of the sorbent, scale-up its production using high throughput manufacturing equipment and bulk raw materials and then evaluate its performance, first in bench-scale experiments and then in slipstream tests using actual coal-derived synthesis gas. One of the objectives of the laboratory-scale evaluations was to demonstrate the life and durability of the sorbent for over 10,000 cycles and to assess the impact of contaminants (such as sulfur) on its performance. In the field tests, our objective was to demonstrate the operation of the sorbent using actual coal-derived synthesis gas streams generated by air-blown and oxygen-blown commercial and pilot-scale coal gasifiers (the CO{sub 2} partial pressure in these gas streams is significantly different, which directly impacts the operating conditions hence the performance of the sorbent). To support the field demonstration work, TDA collaborated with Phillips 66 and Southern Company to carry out two separate field tests using actual coal-derived synthesis gas at the Wabash River IGCC Power Plant in Terre Haute, IN and the National Carbon Capture Center (NCCC) in Wilsonville, AL. In collaboration with the University of California, Irvine (UCI), a detailed engineering and economic analysis for the new CO{sub 2} capture system was also proposed to be carried out using Aspen PlusTM simulation software, and estimate its effect on the plant efficiency.
Searching for similarity in a slab of seismic data (2006)

In the last ten years, geoscientists developed many methods to interpret layered, 3D data. This article will describe some of the solutions, and a good place to begin is with a review of the challenges of 3D seismic interpretation.
Image Target Detection Using Morphological Neural Network (2009)

It is known that detecting small targets in remotely sensed image is difficult and challenging work. Filter neural network is designed to detect target which based morphological, structure element is used as network parameter, by competition and cooperation, network parameter is adjusted. Morphologic changed-weight neural network algorithm is used to realize small infrared target detection under complex background. Experimental results of using the above detector to detect real infrared targets are also included. These results demonstrate that the new detector yields a promising solution for the detection problems of small targets.
Higher time derivatives of the generalized entropy (1976)

Using the generalized N-body expression for a Liapunov functional developed by Prigogine, George, and Henin, a condition is obtained whereby the successive time derivatives of this functional alternate in sign for weakly coupled systems. This condition is applied and seen to hold true for generalized Bose and Fermi systems. An N-body entropy is defined in terms of this functional, which contains diagonal as well as off-diagonal elements of the density matrix. This ’’generalized entropy’’ is seen to be concave close to equilibrium, similar to the results of Harris. It does not appear that this property holds for the entropy far from equilibrium.
HLA-DR MISMATCHING CORRELATES WITH EARLY CARDIAC ALLOGRAFT REJECTION, INCIDENCE, AND GRAFT SURVIVAL WHEN HIGH-CONFIDENCE-LEVEL SEROLOGICAL DR TYPING IS USED (1994)

To determine if cardiac allograft outcome is improved among patients with fewer HLA-DR mismatches with their donors, we studied 132 recipients of a primary cardiac allograft who were transplanted between December 1985 and December 1991. These recipients and their donors all had high-confidence-level serological HLA-DR typing, previously shown to correlate highly with DNA DR typing. Patients were divided in two groups based on the HLA-DR mismatch with their donors. Group I consisted of 78 patients with 1 or zero DR mismatch and group II of 54 patients with 2 DR mismatches. Allograft outcome measurements included incidence of moderate rejection, incidence of allograft vasculopathy at 12 months, cardiac function measured as left ventricular ejection fraction (LVEF) and cardiac index (CD, and actuarial graft survival up to 7 years. Groups I and group II were not different with regard to recipient age, donor age, ischemia time, pulmonary vascular resistance, sex, or PRA greater than 0%. Group II had a higher incidence of moderate rejection on the first-week biopsy (47% vs. 25%, P=0.019), and during the first month (84% vs. 58%, P=0.006), but no difference was found in frequency of rejection from months 2 to 12. LVEF was not different in the groups at any point. CI was better in group I at 12 months (2.76 vs. 2.5, P=0.03). No statistically significant difference was found in incidence of allograft vasculopathy (17% vs. 26%, P=0.204). Actual graft survival at 1 year was better for group I (91% vs. 74%, P=0.008), and actuarial graft survival at 6 years also favored group I (76% vs. 56%, P=0.04). Using high-confidence-level serological HLA-DR typing assignments we demonstrated that HLA-DR mismatching correlates highly with cardiac allograft outcome. Implications are that heart transplant survival could be improved if prospective matching were feasible and prioritized or if immunosuppression were tailored to the HLA-DR match.
Statin Strikeout (2014)

The results of two randomized, controlled trials, supported by the U.S. National Institutes of Health, in which inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductase, commonly known as statins, were tested for efficacy in sepsis-associated acute respiratory distress syndrome (ARDS)1 and in chronic obstructive pulmonary disease (COPD)2 are now reported in the Journal. The rationale of the trials was based largely on observational data showing that patients with these conditions who were taking statins had better outcomes than patients who were not. Both trials were stopped by the data and safety monitoring boards before the projected enrollment was completed because no . . .
Ventricular Fibrillation following Local Application of Cocaine and Epinephrine for Nasal Surgery (1992)

We report the case of a 17-year-old female patient, scheduled for septoplasty under general anesthesia, who developed ventricular fibrillation after intranasal application of cocaine (350 mg) and submucosal injection of lidocaine (20 mg) with epinephrine (100 micrograms). Resuscitation by external chest compression was successful, and normal sinus rhythm was reestablished after lidocaine injection (50 mg, i.v.). The cardiac risk of the combined administration of cocaine and epinephrine during general anesthesia are discussed.
Synthesis of Model Compounds for the Structure Elucidation of a Ladder Polymer from Benzo[1,2-c:4,5-c‘]difuran and a Diquinone Derivative (1996)

The high yield synthesis of the fully soluble acenequinone model compounds 6 and 7 as well as of the corresponding poly(acene quinone) derivative 4 is reported. Some of the diastereomers of 6 and 7 have been isolated and their structures clarified by NMR spectroscopy. This information was used as a basis for assigning the polymer's structure.
Pro-apoptotic effect of nonsteroidal anti-inflammatory drugs on synovial fibroblasts (2008)

Rheumatoid arthritis (RA) is a systemic inflammatory disease that mainly affects the articular synovial tissues. Although the etiology of RA has not yet been elucidated, physical and biochemical inhibition of synovial hyperplasia, which is the origin of articular destruction, may be an effective treatment for RA. Nonsteroidal anti-inflammatory drugs (NSAIDs) have long been used for the treatment of RA. The mechanism of action of NSAIDs generally involves the inhibition of cyclooxygenase (COX) at sites of inflammation. Thus, NSAIDs were not generally considered to have a so-called anti-rheumatic effect, including inhibition of progressive joint destruction and induction of remission. However, certain conventional NSAIDs and celecoxib, a selective COX-2 inhibitor, have been reported to inhibit synovial hyperplasia by inducing the apoptosis of human synovial fibroblasts. Therefore, it has been suggested that such NSAIDs may not only have an anti-inflammatory effect but also an anti-rheumatic effect. In this review, we summarize findings about the pro-apoptotic effect, in other words, anti-proliferative effect of NSAIDs on synovial fibroblasts from patients with RA.
Blood pressure in unanesthetized bacterially infected rabbits: effects of antipyretic drug therapy. (1979)

It has previously been determined that an intraperitoneal infusion of a combination of antipyretic-anti-inflammatory drugs, sodium salicylate and acetaminophen, increases the survival rate of rabbits injected with Pasteurella multocida, a gram-negative bacterium. To determine whether the increased survival rate was attributable to antihypotensive effects of the drug therapy, aortic arch blood pressure was measured continuously in unanesthetized rabbits before and after an injection of bacteria. The results of this investigation revealed that the injection of bacteria produced a fall in mean arterial pressure of 13 mm Hg in both drug- and saline-infused rabbits. These results exclude the possibility that the increased survival rate of rabbits injected with P. multocida, when infused with sodium salicylate and acetaminophen is attributable to the prevention in the fall in mean arterial pressure.
Fatigue debonding of the roughened stem–cement interface: Effects of surface roughness and stem heating conditions (2005)

The aim of this study was to determine the effects of cyclic loading on the debond process of a roughened stem-cement interface used in total hip arthroplasty. The specific goals were to assess the effects of two surgeon-controlled variables (stem heating and degree of stem surface roughness) and to determine if an independent finite element-based fracture mechanics model could be used to predict the debond response. A clamped cantilever beam geometry was used to determine the fatigue debond response of the stem-cement interface and was created using an experimental mold that simulated in vivo cementing conditions. A second experiment was performed using a torsion-loading model representative of the stem-cement-bone composite. For both experiments, two stem heating (room temperature and 50 degrees C) and surface roughness conditions (grit blasted: Ra = 2.3 and 5.1 microm) were used. Finally, a finite element model of the torsion experiment with provision for crack growth was developed and compared with the experimental results. Results from both experiments revealed that neither stem preheating nor use of a stem with a greater surface roughness had a marked effect on the fatigue debond response. There was substantial variability in the debond response for all cases; this may be due to microscopic gaps at the interface for all interface conditions. The debond rate from the finite element simulation (10(-7.31) m/cycle) had a magnitude similar to the experimental torsion model (10(-(6.77 +/- 1.25)) m/cycle). This suggests that within the context of the experimental conditions studied here that the debond response could be assessed using a linear elastic fracture mechanics-type approach.
Mesh‐free approach for enhancement of mammograms (2017)

Mammogram enhancement is a key step to detect breast cancer using digital mammogram. The present study investigates mesh‐free radial basis function (RBF) collocation method to solve linear diffusion equation for image enhancement of mammograms. The proposed algorithm is compared with the mesh‐based finite difference method as well as other existing enhancement methods such as unsharp masking, histogram equalisation, and contrast limited adaptive histogram equalisation. Specifically, figure‐of‐merits with emphasis on image contrast and computational time are assessed and compared with different image processing techniques. The proposed algorithm has been applied towards the enhancement of all 322 sample mammogram images of Mini‐Mammographic Image Analysis Society and randomly selected 300 sample images from Digital Database for Screening Mammography databases. Finally, mean and standard deviation of contrast improvement index and peak signal‐to‐noise ratio have been estimated and presented. The outcome of this study indicates that the mesh‐free‐based RBF collocation method proves to be a computationally efficient and valuable contrast enhancement technique in an area of mammography.
Tetraphenylphosphonium Salts-Grafted Copolymers as Catalysts for Halogen-Exchange Fluorinations (1990)

Abstract Cross-linked styrene/2-(4-chlorophenyl)propene copolymergrafted tetraphenylphosphonium salt was an effective and reusable catalyst for the reaction of aromatic chlorides with anhydrous potassium fluoride to afford the corresponding aromatic fluorides in good yields.
Implementation and Examples (1993)

For the practical use of a specification language, algorithmic support is essential. Software tools can be used for instance to test a given specification against informal requirements, to generate test data for an implementation, or to generate (semi-)automatically formal proofs for propositions over a specification. Below it is shown that existing tools for term rewriting can be used for experiments with nondeterministic specifications.
JA-pretreated hypocotyl explants potentiate de novo shoot regeneration in Arabidopsis (2019)

Plant regeneration involves critical checkpoints including pluripotency acquisition and <i>de novo</i> organogenesis. However, comprehensive understanding of the mechanisms that underlie plant regeneration remains limited. Here, we found that calli derived from jasmonate (JA)-pretreated hypocotyl explants exhibited increased rates of <i>de novo</i> shoot regeneration. In contrast, exogenous JA treatment during callus formation on CIM did not influence the plant regeneration process. The enhanced shoot regeneration was diminished in <i>coi1-1</i> mutants, indicating that JA-pretreated explants potentiate shoot regeneration in a COI1-dependent manner. These results suggest that the JA-responsive COI1 protein likely contributes to plant regeneration efficiency via regulation of hormone-signaling crosstalk and/or cell proliferation.
Pyrimido[4,5-c]pyridazines. 3. Preferential formation of 8-amino-1H-pyrimido[4,5-c]-1,2-diazepin-6(7H)-ones by cyclizations with .alpha.,.gamma.-dioxo esters (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPyrimido[4,5-c]pyridazines. 3. Preferential formation of 8-amino-1H-pyrimido[4,5-c]-1,2-diazepin-6(7H)-ones by cyclizations with .alpha.,.gamma.-dioxo estersW. Revill Mallory, Robert W. Morrison Jr., and Virgil L. StylesCite this: J. Org. Chem. 1982, 47, 4, 667–674Publication Date (Print):February 1, 1982Publication History Published online1 May 2002Published inissue 1 February 1982https://doi.org/10.1021/jo00343a013RIGHTS & PERMISSIONSArticle Views230Altmetric-Citations17LEARN 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 (1 MB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Tuning the Coordination Structure of CuNC Single Atom Catalysts for Simultaneous Electrochemical Reduction of CO2 and NO3– to Urea (2022)

Abstract Closing both the carbon and nitrogen loops is a critical venture to support the establishment of the circular, net‐zero carbon economy. Although single atom catalysts (SACs) have gained interest for the electrochemical reduction reactions of both carbon dioxide (CO 2 RR) and nitrate (NO 3 RR), the structure–activity relationship for Cu SAC coordination for these reactions remains unclear and should be explored such that a fundamental understanding is developed. To this end, the role of the Cu coordination structure is investigated in dictating the activity and selectivity for the CO 2 RR and NO 3 RR. In agreement with the density functional theory calculations, it is revealed that Cu‐N 4 sites exhibit higher intrinsic activity toward the CO 2 RR, whilst both Cu‐N 4 and Cu‐N 4− x ‐C x sites are active toward the NO 3 RR. Leveraging these findings, CO 2 RR and NO 3 RR are coupled for the formation of urea on Cu SACs, revealing the importance of *COOH binding as a critical parameter determining the catalytic activity for urea production. To the best of the authors’ knowledge, this is the first report employing SACs for electrochemical urea synthesis from CO 2 RR and NO 3 RR, which achieves a Faradaic efficiency of 28% for urea production with a current density of − 27 mA cm –2 at − 0.9 V versus the reversible hydrogen electrode.
ChemInform Abstract: The Catalytic Asymmetric Intramolecular Stetter Reaction (2008)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Low‐Temperature Sintering and High Thermal Conductivity of YLiO2‐Doped AlN Ceramics. (1996)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Intravenous Hyperalimentation. (1973)

A conference on intravenous hyperalimentation was held in November 1970 in San Antonio, Tex. It was attended by clinicians who pioneered use of that technique and by several authorities on nutrition and intermediary metabolism. Cowan and Scheetz's book is a compilation of the formal presentations that were made there and the discussions that followed. The meeting was a kind which usually occurs when a field has evolved to a stage where there is generally acknowledged need for reassessment of collective clinical experience and redefinition of remaining problems. The conference report that results is useful to a general reader if it assembles information that is otherwise either scattered or unavailable into readable, interpreted form. The book does so very well. It is a source of facts about the clinical role of intravenous hyperalimentation and a review of current thinking about its physiology; some ideas about the potential of future methods and