gebhart/patrepeval huggingface dataset:
Defining point-set surfaces (2004)

The MLS surface [Levin 2003], used for modeling and rendering with point clouds, was originally defined algorithmically as the output of a particular meshless construction. We give a new explicit definition in terms of the critical points of an energy function on lines determined by a vector field. This definition reveals connections to research in computer vision and computational topology.Variants of the MLS surface can be created by varying the vector field and the energy function. As an example, we define a similar surface determined by a cloud of surfels (points equipped with normals), rather than points.We also observe that some procedures described in the literature to take points in space onto the MLS surface fail to do so, and we describe a simple iterative procedure which does.
System with Potential Dual Modes of Metal–Ligand Cooperation: Highly Catalytically Active Pyridine‐Based PNNH–Ru Pincer Complexes (2014)

Abstract Metal–ligand cooperation (MLC) plays an important role in catalysis. Systems reported so far are generally based on a single mode of MLC. We report here a system with potential for MLC by both amine–amide and aromatization–dearomatization ligand transformations, based on a new class of phosphino–pyridyl ruthenium pincer complexes, bearing sec ‐amine coordination. These pincer complexes are effective catalysts under unprecedented mild conditions for acceptorless dehydrogenative coupling of alcohols to esters at 35 °C and hydrogenation of esters at room temperature and 5 atm H 2 . The likely actual catalyst, a novel, crystallographically characterized monoanionic de‐aromatized enamido–Ru II complex, was obtained by deprotonation of both the NH and the methylene proton of the N‐arm of the pincer ligand.
p-Nitrobenzyl Trichloroacetimidate (1995)

The imidate group in the title compound, C 9 H 7 Cl 3 N 2 O 3 , is planar and approximately perpendicular to the p-nitrobenzyl group. The C=N bond is notably short for a double bond
Pulsed Magneto-motive Ultrasound Imaging Using Ultrasmall Magnetic Nanoprobes (2011)

Nano-sized particles are widely regarded as a tool to study biologic events at the cellular and molecular levels. However, only some imaging modalities can visualize interaction between nanoparticles and living cells. We present a new technique, pulsed magneto-motive ultrasound imaging, which is capable of in vivo imaging of magnetic nanoparticles in real time and at sufficient depth. In pulsed magneto-motive ultrasound imaging, an external high-strength pulsed magnetic field is applied to induce the motion within the magnetically labeled tissue and ultrasound is used to detect the induced internal tissue motion. Our experiments demonstrated a sufficient contrast between normal and iron-laden cells labeled with ultrasmall magnetic nanoparticles. Therefore, pulsed magneto-motive ultrasound imaging could become an imaging tool capable of detecting magnetic nanoparticles and characterizing the cellular and molecular composition of deep-lying structures.
A comparison of quantum limited dose and noise equivalent dose (2016)

Quantum-limited-dose (QLD) and noise-equivalent-dose (NED) are performance metrics often used interchangeably. Although the metrics are related, they are not equivalent unless the treatment of electronic noise is carefully considered. These metrics are increasingly important to properly characterize the low-dose performance of flat panel detectors (FPDs). A system can be said to be quantum-limited when the Signal-to-noise-ratio (SNR) is proportional to the square-root of x-ray exposure. Recent experiments utilizing three methods to determine the quantum-limited dose range yielded inconsistent results. To investigate the deviation in results, generalized analytical equations are developed to model the image processing and analysis of each method. We test the generalized expression for both radiographic and fluoroscopic detectors. The resulting analysis shows that total noise content of the images processed by each method are inherently different based on their readout scheme. Finally, it will be shown that the NED is equivalent to the instrumentation-noise-equivalent-exposure (INEE) and furthermore that the NED is derived from the quantum-noise-only method of determining QLD. Future investigations will measure quantum-limited performance of radiographic panels with a modified readout scheme to allow for noise improvements similar to measurements performed with fluoroscopic detectors.
Interkulturell kompetens kan stärka medicinsk forskning (2020)

Samarbetet mellan forskare i Östersjöregionen har aldrig varit starkare. Ändå finns stora utmaningar, vilket blir tydligt i en aktuell debatt i Tyskland om digitaliseringar i vården där politiker lyfter fram Sverige som förebild.
Vagal regulation of heart rate in the prediction of developmental outcome for very low birth weight preterm infants. (1997)

To investigate heart rate and respiratory sinus arrhythmia (RSA) as markers of developmental outcome, infant ECG and 3 year outcome were assessed in 41 very low birth weight (< 1,500 g) infants. Measures of mean heart rate and RSA, and the maturational shifts in their values from 33 to 35 weeks gestational age, were recorded. RSA measures predicted 3 year outcome beyond the effects of birth weight, medical risk, and socioeconomic status. Higher RSA was associated with better social skills, whereas greater RSA maturation was associated with better mental processing and gross motor skills. Lower heart rate was associated with better behavior regulation and social skills, whereas greater maturational decreases were associated with better gross motor skills. Dividing the sample into groups of infants with birth weights less than 1,000 g and those with birth weights over 1,000 g, RSA maturation emerged a strong predictor of mental processing, knowledge base, and gross motor skills in the former. A measure of joint maturation of RSA and heart rate was associated with better behavior regulation at 3 years, as measured by Child Behavior Checklist and Parenting Stress Index scores, for this group. The findings directly respond to the need for physiological variables in the prediction of outcome in high-risk infants.
Error Characteristics of Onboard Wind Field Estimation via Direct Method in a Simplified Tornado Model (2022)

View Video Presentation: https://doi.org/10.2514/6.2022-0998.vid This paper introduces an approach for wind field estimate validation in a simulated tornado, defines a procedure of model comparison and validation of tornado using hardware-in-loop simulation. The approach consists of simulating tornado wind speeds using an idealized tornadic model, using spatiotemporal interpolation to obtain a local measurement, and implementing the traditional "direct" wind field estimator. Estimated and true wind speeds were compared quantify performance of the wind estimation method. The results suggest a need for improvements in current wind estimation routines. Although the paper lays a strong base for the purpose of tornado model validation using real data and real flight implementation.
In Tags We Trust (2012)

Tagging in online social networks is very popular these days, as it facilitates search and retrieval of multimedia content. However, noisy and spam annotations often make it difficult to perform an efficient search. Users may make mistakes in tagging and irrelevant tags and content may be maliciously added for advertisement or self-promotion. This article surveys recent advances in techniques for combatting such noise and spam in social tagging. We classify the state-of-the-art approaches into a few categories and study representative examples in each. We also qualitatively compare and contrast them and outline open issues for future research.
The plasma elimination rate and urinary secretion of procalcitonin in patients with normal and impaired renal function (2001)

Summary Background and objective The amount of procalcitonin eliminated in the urine and the plasma disappearance rate of procalcitonin were evaluated in patients with normal and impaired renal function, because patients with sepsis are a main target group for procalcitonin measurement, and these patients often develop renal dysfunction. Methods Elimination of procalcitonin in the urine (µg 12 h−1) was measured in 76 patients. In another 67 patients, the 50% plasma disappearance rate (t½, h) was evaluated 48 h after peak concentrations (procalcitonin > 2 µg L−1). Renal function was assessed by creatinine clearance. Results Procalcitonin elimination in the urine was significantly reduced in patients with severe renal dysfunction. However, the plasma disappearance rate correlated only weakly with renal dysfunction (Spearman's rank correlation R = −0.36, P = 0.004, regression t½ = 49.87–0.15 creatinine clearance). The 25% quartile and median were 25.2 h and 30.0 h in patients with normal renal function, and 36.3 h and 44.7 h in patients with severely impaired renal function (creatinine clearance < 30 mL min−1). Conclusion Renal elimination of procalcitonin is not a major mechanism for procalcitonin removal from the plasma. Although the plasma disappearance rate may be prolonged up to 30–50% in some patients with renal dysfunction, clinical diagnostic decisions may not be severely influenced by this moderate prolongation of procalcitonin elimination. We conclude that procalcitonin can be used diagnostically in patients with renal failure as well as in those with normal renal function.
The method of protection of turbine engine "hot part" assemblies from thermal damages using non-linear observers (2006)

The considerable part of damages of turbine jet engines concerns their hot part” assemblies (combustion chamber, turbine, jet nozzle). This is among other things the result of work in the temperature exceeding admissible level for materials, which they are made from. The limiting the temperature of combustion gases is not always sufficiently effective (especially in dynamic orders: starting or acceleration) with reason of inertia of in the use systems of temperature measurement. The limiting of temperature of combustion gases using the non-linear observers of work parameters turbine engine method has been worked up. The algorithm including the models of separate assemblies of engine enables to estimate transient values of temperature of combustion gases on the base of value of different parameters of work the engine, which measurement is almost immediate. The functional model of control system has been developed and examined with co-operations of gas turbine engine during the tests on the stationary test bench. The test results were presented and conclusions the relating possibilities of use were formulated the propose of method of gas temperature-limited as element (path) in full – authority control systems (FADEC).
PROSPECTS FOR CARBON CAPTURE AND STORAGE TECHNOLOGIES (2004)

▪ Abstract Carbon capture and storage (CCS) technologies remove carbon dioxide from flue gases for storage in geologic formations or the ocean. We find that CCS is technically feasible, with current costs of about $200 to $250 per ton of carbon. Although currently a relatively expensive mitigation option, CCS could be attractive if we have a stringent carbon policy, if CCS turns out unexpectedly inexpensive relative to other options, or if it is otherwise desired to retain fossil fuels as part of the energy mix while reducing carbon emissions. Near-term prospects favor CCS for electric power plants and certain industrial sources with storage in depleted oil and gas reservoirs as opposed to aquifers. Deep aquifers may provide an attractive longer-term-storage option, whereas ocean storage poses greater technical and environmental uncertainty. CCS should be seriously considered for addressing climate change, alongside energy efficiency and carbon-free energy, although significant environmental, technical, and political uncertainties and obstacles remain.
Vitamin D modulation of innate immune responses to respiratory viral infections (2016)

Vitamin D, in addition to its classical functions in bone homeostasis, has a modulatory and regulatory role in multiple processes, including host defense, inflammation, immunity, and epithelial repair. Patients with respiratory disease are frequently deficient in vitamin D, implying that supplementation might provide significant benefit to these patients. Respiratory viral infections are common and are the main trigger of acute exacerbations and hospitalization in children and adults with asthma and other airways diseases. Respiratory monocytes/macrophages and epithelial cells constitutively express the vitamin D receptor. Vitamin D, acting through this receptor, may be important in protection against respiratory infections. Whether the in vitro findings can be translated into a substantial in vivo benefit still remains uncertain. Here we review the in vitro data on the role of vitamin D in antiviral innate immunity, the data concerning the deficient levels of vitamin D in lung diseases, and the in vivo role of supplementation as protection against respiratory viral infections in healthy individuals and in patients with chronic respiratory diseases. Finally, we suggest ways of improving the effectiveness of vitamin D as an adjuvant in the prevention and treatment of acute respiratory infections.
Consolidation of Titanium Tri-aluminide using by Spark Plasma Sintering. (1997)

Ti-5mass%Al, Ti-I0mass%A1, Ti-32mass%Al and Ti-64mass%Al were synthesized by mechanical alloying (MA) of Ti powder and Al powder using a planetary ball milling for 360ks in 66kPa argon gas atmosphere. Ti-64mass%Al powder milled for 360ks was Al solid solution. Non stoichiometric Ti-Al powder milled for 360ks became amorphous state with an increase of Al content in the MA powder.The mixture of MA powder and Al powder, which contained 64mass%Al, was consolidated by spark plasma sintering(SPS). The starting temperature for shrinkage in SPS process was decreased by the addition of Al powder into MA powder. In the mixture of Ti-5mass%Al MA powder and Al powder, the consolidated TiA13 was obtained by SPS at 1073K for 0.3ks. This sintered body had a homogeneous fine microstructure.
Novel Tdp1 Inhibitors Based on Adamantane Connected with Monoterpene Moieties via Heterocyclic Fragments (2021)

Tyrosyl-DNA phosphodiesterase 1 (Tdp1) is a promising target for anticancer therapy due to its ability to counter the effects topoisomerase 1 (Top1) poison, such as topotecan, thus, decreasing their efficacy. Compounds containing adamantane and monoterpenoid residues connected via 1,2,4-triazole or 1,3,4-thiadiazole linkers were synthesized and tested against Tdp1. All the derivatives exhibited inhibition at low micromolar or nanomolar concentrations with the most potent inhibitors having IC<sub>50</sub> values in the 0.35-0.57 µM range. The cytotoxicity was determined in the HeLa, HCT-116 and SW837 cancer cell lines; moderate CC<sub>50</sub> (µM) values were seen from the mid-teens to no effect at 100 µM. Furthermore, citral derivative <b>20c</b>, α-pinene-derived compounds <b>20f</b>, <b>20g</b> and <b>25c,</b> and the citronellic acid derivative <b>25b</b> were found to have a sensitizing effect in conjunction with topotecan in the HeLa cervical cancer and colon adenocarcinoma HCT-116 cell lines. The ligands are predicted to bind in the catalytic pocket of Tdp1 and have favorable physicochemical properties for further development as a potential adjunct therapy with Top1 poisons.
Tungsten Sulfido Alkylidene and Cationic Tungsten Sulfido Alkylidene N-Heterocyclic Carbene Complexes (2021)

High-oxidation-state group 6 metal alkylidenes have been dominated by imido and oxo ligands. Here, the first neutral tungsten sulfido alkylidene and cationic tungsten sulfido alkylidene N-heterocyclic carbene (NHC) complexes are presented. A synthesis route that entails the reaction of the corresponding tungsten alkylidyne precursors with H2S in tetrahydrofuran is outlined. Schrock-type complexes bearing chlorides as well as pentafluorophenoxide ligands were synthesized, while variations in the NHC (1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene (IMes), 1,3-dimesityl-4,5-dichloro-1,3-dihydro-2H-imidazol-2-ylidene (IMesCl2), and 1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene (IDipp)) as well as in the anionic ligand (chloride, pentafluorophenoxide, and 2,6-diphenylphenoxide) were carried out for the cationic tungsten sulfido alkylidene NHC complexes. All complexes were tested in benchmark olefin metathesis reactions in which the cationic tungsten sulfido alkylidene NHC complexes showed high productivities. Atomic charges were calculated for several cationic tungsten sulfido alkylidene NHC complexes and compared to those of the analogous tungsten oxo and imido complexes. These calculations revealed charge distribution between the NHC and the metal, yet lower charges at the metal and less polarization of the metal alkylidene bond compared to their tungsten oxo and imido analogs.
The Finite Element Analysis of Axle Nut Crimping (2017)

&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;In the assembly of axles and wheel hubs, a nut is frequently used to fasten them as one unit. In order for the nut to hold the assembly in its final position, crimping is a widely-used method which prevents nut from loosening. A reliable crimping process not only prevents movement of the nut during axle operation but should also minimize the possibility of cracking the rim. If the nut cracks during assembly, it can start to rust and deteriorate. The service life span of the axle assembly hence shortens as a result. The quality of crimping operation is determined by the component designs, the process parameters, and the crimping tool geometry. It would be time-consuming and costly to evaluate these factors empirically; let alone the requirement of prototypes in the early stage of a new program. A dynamic finite element methodology which adopts the Arbitrary Lagrangian-Eulerian formulation from ABAQUS explicit solver is developed to simulate the complete crimping process. Various process parameters and design specifications for possible geometry combinations in the process are formulated by DOE. Recommendations from the analysis would serve as a foundation and guideline for the development of a reliable axle nut crimping process in automotive industry. A strong correlation between predicted and measured crimping force is also found in this study.&lt;/div&gt;&lt;/div&gt;
Dependence of critical current density on temperature and magnetic field in multifilamentary Nb/sub 3/Al strands made by the Jelly roll process (1997)

The temperature dependence of critical current in Nb/sub 3/Al/Cu multifilamentary strands fabricated by the Jelly-roll process has been measured to establish a data base for fusion magnet design. The measurements are performed in the temperature range of 4.2 to 16 K and in the magnetic field range of 0 to 16 T. From these data, we have produced empirical formulas available for conductor design work.
Tumour necrosis factor (TNF) as a mediator of macrophage helminthotoxic activity (1990)

Lymphokine-activated macrophages are cytotoxic for larvae of the helminth parasite Schistosoma mansoni. That soluble secreted factors may mediate this cytotoxicity was suggested by the observation that culture supernatant fluids from stimulated macrophages also exhibited larvacidal activity. These fluids contain the monokine tumour necrosis factor (TNF). Several observations indicated that TNF is directly toxic to schistosome larvae. Cytotoxic sera taken from BCG- or S. mansoni-immunized mice after endotoxin challenge killed schistosomula in vitro, and upon gel filtration the larvacidal factor(s) in the sera co-eluted with the tumoricidal activity defined as TNF. Recombinant-derived TNF exhibited direct toxicity to schistosomula at high concentrations, or at lower concentrations in the presence of IFN gamma. The larvacidal activity of macrophage supernatant fluids was abrogated by addition of either anti-TNF antisera or Zn+2, which has been shown to inhibit TNF-induced damage of tumour cells. Anti-TNF and Zn+2 likewise suppressed schistosomulum killing by lymphokine-activated peritoneal macrophages or the IC-21 macrophage line, indicating that TNF also plays a role in the effector mechanism of larval killing by whole cells.
Automated Blood Sampling and Glucose Sensing in Critical Care Settings (2008)

Cascade's automated peripheral venous blood sampling system, in combination with a flow-through glucose sensor system, offers several advantages over current state-of-the-art systems. This includes the potential for significantly improved workflow in the ICU, minimal discomfort to the patient, and accurate glucose measurement in whole blood, thus helping achieve tight glycemic control.
Acetylenic carbamates. III. The N-cycloaliphatic derivatives (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcetylenic carbamates. III. The N-cycloaliphatic derivativesRobert D. Dillard, G. A. Poore, Nelson R. Easton, M. J. Sweeney, and W. R. GibsonCite this: J. Med. Chem. 1968, 11, 6, 1155–1158Publication Date (Print):November 1, 1968Publication History Published online1 May 2002Published inissue 1 November 1968https://doi.org/10.1021/jm00312a011RIGHTS & PERMISSIONSArticle Views67Altmetric-Citations9LEARN 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 (440 KB) Get e-Alerts Get e-Alerts
A water-compatible, highly active and reusable PEG-coated mesoporous silica-supported palladium complex and its application in Suzuki coupling reactions (2006)

A highly active heterogeneous palladium catalyst was prepared from coated mesoporous materials which contain a layer of readily available PEG with a labile coordinating ability for palladium. The aqueous suspension of the catalyst may be reused several times by simple extraction of the aqueous reaction mixture with ether to remove the product.
Constancy on quality factor of dual-T quartz crystal resonator circuit (2008)

In this paper, we have studied the quality factor of a dual-T quartz crystal resonator circuit of which its resonance frequency can be changed a several thousand ppm exceeding the limit of the piezoelectric coupling factor of a crystal resonator. We derived the relation between the quality factor of the dual-T circuit and the equivalent circuit parameters of the component crystal resonators. We have made the measurement and have shown that the frequency change about 1000 ppm can be obtained with constant quality factor comparable to its component crystal resonator. We made an oscillator using this dual-T circuit and also showed about 1000 ppm frequency tunability.