gebhart/patrepeval huggingface dataset:
Effect of synthesis conditions on the properties of nanocrystalline faujasites (2016)

The effect of crystallization parameters on the properties of nanocrystalline zeolites Y has been studied to optimize the synthesis conditions. Zeolites Y are prepared by the three-stage hydrothermal crystallization with a gradual rise in synthesis temperature from room temperature to 60°C using the Na2O/SiO2 ratio in the reaction mixture and the number and duration of individual synthesis stages as variable synthesis parameters. It has been shown that an increase in the Na2O/SiO2 molar ratio in the reaction mixture above 9.6 leads to a change in the crystallization selectivity and causes formation of zeolite X with a crystal size of 200 nm as a crystalline product. An increase in the duration of the synthesis stage at 60°C is accompanied by increase in the crystal size and entails formation of an analcime impurity phase. A decrease in the duration of reaction mixture aging stages at 25 and 38°C leads to an increase in the zeolite Y nanocrystal sizes and a decrease in the crystalline product yield. It has been found that a pure zeolite Y phase with a nanocrystal size of 320–350 nm and a SiO2/Al2O3 ratio of 3.6–4.2 is formed during the three-stage synthesis from a (7.2–9.6)Na2O · Al2O3 · 14.4 SiO2 · 290 H2O reaction mixture with a yield of 0.60–0.88 g/g of reaction mixture.
THE SPECTRUM OF INTERNAL LIMITING MEMBRANE DISEASE IN ALPORT SYNDROME (2021)

Multimodal imaging allowed for the detection/characterization of retinal findings (ILM granularity, progressive ILM lamellation, retinal nerve fiber layer dehiscence, vascular lacunae, and coarse arrangement of retinal nerve fiber layer toward the disc) as multifaceted manifestations of ILM disease in Alport syndrome.
Abdominoplasty with Direct Resection of Deep Fat (2009)

Direct excision of subscarpal fat does not subject any zone of the abdominoplasty flap to increased risks of vascular compromise. It is a safe technique that provides excellent abdominoplasty results.
Mean-Field Controllability and Decentralized Stabilization of Markov Chains, Part II: Asymptotic Controllability and Polynomial Feedbacks (2017)

This paper, the second of a two-part series, presents a method for mean-field feedback stabilization of a swarm of agents on a finite state space whose time evolution is modeled as a continuous time Markov chain (CTMC). The resulting (mean-field) control problem is that of controlling a nonlinear system with desired global stability properties. We first prove that any probability distribution with a strongly connected support can be stabilized using time-invariant inputs. Secondly, we show the asymptotic controllability of all possible probability distributions, including distributions that assign zero density to some states and which do not necessarily have a strongly connected support. Lastly, we demonstrate that there always exists a globally asymptotically stabilizing decentralized density feedback law with the additional property that the control inputs are zero at equilibrium, whenever the graph is strongly connected and bidirected. Then the problem of synthesizing closed-loop polynomial feedback is framed as a optimization problem using state-of-the-art sum-of-squares optimization tools. The optimization problem searches for polynomial feedback laws that make the candidate Lyapunov function a stability certificate for the resulting closed-loop system. Our methodology is tested for two cases on a five vertex graph, and the stabilization properties of the constructed control laws are validated with numerical simulations of the corresponding system of ordinary differential equations.
ChemInform Abstract: Synthesis and X‐Ray Crystal Structure of the Divalent (Bis(trimethylsilyl)amido)samarium Complexes ((Me3Si)2N)2Sm(THF)2 and (((Me3Si)2N)Sm(μ‐I)(DME)(THF))2. (1988)

Abstract The synthesis of (III) and (V) provides new soluble complexes of Sm(II) which parallel the corresponding compounds containing pentamethylcyclopentadienyl ligands instead of the bis(silyl)amido group.
Umfangskraftverhalten von Pkw-Reifen bei unterschiedlichen Fahrbahnzuständen (1996)

Die Realisierung und Weiterentwicklung geeigneter Regelstrategien fuer elektronische Systeme wie zum Beispiel Antriebsschlupf- oder Fahrdynamikregelsysteme setzen die genaue Kenntnis des Umfangskraftuebertragungsverhaltens zwischen Reifen und Fahrbahn voraus. Berichtet wird ueber eine Untersuchung des Instituts fuer Maschinenkonstruktionslehre und Kraftfahrzeugbau der Universitaet Karlsruhe ueber das Kraftschlussverhalten fuer eine repraesentative Auswahl verschiedener Reifentypen bei den unterschiedlichsten Fahrbahnzustaenden. Fuer das Forschungsvorhaben wurden insgesamt etwa 1.500 Kennlinien ermittelt. Im Beitrag wird eine Auswahl der interessanten Ergebnisse veroeffentlicht. Das Messprogramm bezog sich auf trockene, nasse und vereiste Fahrbahnen. Titel in Englisch: Longitudinal force behaviour of passenger car tyres at different road conditions.
Perkin communications. Iodonium-induced cyclisations of 5-silylalk-4-enols (1990)

In the presence of hypervalent iodine reagents, silyl-substituted δ,Îµ-unsaturated alcohols (4a–f) underwent ring-closure to give the pyran-3-ones (5) as well as tosyloxy substituted tetrahydropyrans (6) and (7).
Developments and applications of field mass spectrometers (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDEVELOPMENTS AND APPLICATIONS OF FIELD MASS SPECTROMETERSWILLIAM C. MCDONALD, MITCHELL D. ERICKSON, BRIAN M. ABRAHAM, and ALBERT ROBBAT, JR.Cite this: Environ. Sci. Technol. 1994, 28, 7, 336A–343APublication Date (Print):July 1, 1994Publication History Published online30 May 2012Published inissue 1 July 1994https://pubs.acs.org/doi/10.1021/es00056a719https://doi.org/10.1021/es00056a719research-articleACS PublicationsRequest reuse permissionsArticle Views27Altmetric-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 InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Photo-induced linkage NO isomers in the dinitrosyl complex [Ru(NO)2(PCy3)2Cl](BF4) identified by photocrystallography and IR-spectroscopy (2016)

Photoinduced metastable linkage NO isomers have been known for a long time in mono-nitrosyl ruthenium or iron transition metal complexes [MLxLy(NO)]n for which appropriate temperature and excitation conditions allow a controlled generation of different metastable states. Dinitrosyl complexes offer attractive possibilities owing to the potential switching of the two nitrosyl ligands, possibly in a selective manner, leading to a complicated and intricated population of metastable states. [Ru(NO)2(PCy3)2Cl]BF4 belongs to a complete series of bis-phosphane complex salts of general formula [Ru(NO)2(PR3)2X](BF4) (X = Cl, Br, I). It presents a square pyramidal geometry with both a linear and a bent NO ligand, and an Ru(d6) electron configuration. Multiple light-induced reversible metastable NO linkage isomers (PLIs) are detected by a combination of photocrystallographic and infrared (IR) analysis. The IR signature of three PLI states has been clearly identified. The structural configuration of the major component (PLI-1) has been derived by X-ray photocrystallography. After irradiation with 405 nm, the orientation of the bent nitrosyl is changed by rotation towards the Cl ligand, opposite to the linear NO. The minor second metastable state (PLI-2) is proposed to result from a side-bonded (similar to MS2 in mono-nitrosyl complexes) state of the linear nitrosyl.
ChemInform Abstract: Lewis‐Base Adducts of Group 11 Metal(I) Compounds. Part 49. Structural Characterization of Hexameric and Pentameric (Triphenylphosphine)copper(I) Hydrides. (1989)

Abstract 1:1 Adducts of CuH with PPh 3 are isolated from THF as hexameric and pentameric clusters.
Detection of Protein Coding Sequences Using a Mixture Model for Local Protein Amino Acid Sequence (2000)

Locating protein coding regions in genomic DNA is a critical step in accessing the information generated by large scale sequencing projects. Current methods for gene detection depend on statistical measures of content differences between coding and noncoding DNA in addition to the recognition of promoters, splice sites, and other regulatory sites. Here we explore the potential value of recurrent amino acid sequence patterns 3-19 amino acids in length as a content statistic for use in gene finding approaches. A finite mixture model incorporating these patterns can partially discriminate protein sequences which have no (detectable) known homologs from randomized versions of these sequences, and from short (< or = 50 amino acids) non-coding segments extracted from the S. cerevisiea genome. The mixture model derived scores for a collection of human exons were not correlated with the GENSCAN scores, suggesting that the addition of our protein pattern recognition module to current gene recognition programs may improve their performance.
Nonchromatographic Affinity Precipitation Method for the Purification of Bivalently Active Pharmaceutical Antibodies from Biological Fluids (2013)

This Article describes an affinity-based precipitation method for the rapid and nonchromatographic purification of bivalently active monoclonal antibodies by combining the selectivity of affinity chromatography with the simplicity of salt-induced precipitation. This procedure involves (i) precipitation of proteins heavier than immunoglobulins with ammonium sulfate; (ii) formation and selective precipitation of cyclic antibody complexes created by binding to trivalent haptens specific for the antibody; and (iii) membrane filtration of the solubilized antibody pellet to remove the trivalent hapten from the purified antibody. We applied this technique to the purification of two pharmaceutical antibodies, trastuzumab and rituximab, by synthesizing trivalent haptens specific for each antibody. Using this method, we were able to purify both antibodies from typical contaminants including CHO cell conditioned media, ascites fluid, DNA, and other antibodies with yields >85% and with >95% purity. The purified antibodies displayed native binding levels to cell lines expressing the target proteins demonstrating that the affinity-based precipitation method did not adversely affect the antibodies. The selectivity of the affinity-based precipitation method for bivalently active antibodies was established by purifying trastuzumab from a solution containing both active and chemically denatured trastuzumab. Prior to purification, the solutions displayed 20-76% reduction in binding activity, and after purification, native binding activity was restored, indicating that the purified product contained only bivalently active antibody. Taken together, the affinity-based precipitation method provides a rapid and straightforward process for the purification of antibodies with the potential to improve product quality while decreasing the purification costs at both the lab and the industrial scale.
Abstract 13646: Higher Perceived Stress Levels are Associated With an Increased Long-Term Mortality Risk: A Landmark Analysis in Patients With Peripheral Artery Disease (2019)

Background: It is unknown whether perceived stress in patients with PAD is linked to an increased long-term mortality risk. Methods: The PORTRAIT study enrolled 797 patients presenting with new or ...
Developmental expression of neurokinin A and functional neurokinin-2 receptors in lung (2001)

Peribronchial smooth muscle constriction causes airway stretch, an important mechanical force in developing lung. Little is known about factors influencing these spontaneously active muscle elements. We measured contractile activity of neurokinin (NK) receptors on fetal intrapulmonary smooth muscle by tracheal perfusion assay (n = 11). Injecting either capsaicin or the NK(2) receptor agonist [NLE(10)]NKA resulted in significant (P < 0.05) bronchoconstriction. A specific NK(2) receptor antagonist inhibited constriction caused by endogenous tachykinins released by capsaicin. We then examined NK(2) receptor (n = 44) and NKA (n = 23) ontogeny in human lung. NKA immunostaining was identified in peribronchial nerves in samples with gestational age >12 wk. NK(2) receptor protein was identified in peribronchial and perivascular smooth muscle. These results indicate that endogenous tachykinins released by the developing lung act via NK(2) receptors to cause smooth muscle constriction. We speculate that tachykinins could modulate lung development.
Short Studies in the Malachiidae (Coleoptera) (1917)

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Drift Measurements in Pressure Sensors (2012)

The use of bottom pressure recorders (BPR) to measure sea level change, ocean floor settling or geodetic processes requires extremely consistent and stable pressure readings. Proper long-term deployment of BPRs or other precision, unattended pressure measurement instrumentation therefore, relies on understanding the drift rate and response characteristics of the pressure sensors. Sea-Bird Electronics routinely screens sensors for pressure-temperature response characteristics, offset and slope. The drift performance of the frequency acquisition and storage electronics is verified to be ≤1.0 ppm/year; however, qualifying the pressure transducer is more challenging. Here we describe the testing protocols and present results in the characterization of the bulk drift of Digiquartz pressure sensors made by Paroscientific. This entails recording the output of the sensor relative to a reference sensor in a low thermal noise environment for 1.5 to 4 months. The data from one such test shows drift rates ranging from 0.75 PSIA per year to 3.0 PSIA per year. In the cadre of sensors under test, differences of as much as a factor of 10 were observed in drift performance. METHOD
Design of a PFC rectifier with fast start up response and low input current distortion (2017)

For a PFC rectifier, normally designing of the PI compensator is based on the frequency domain model which is derived from the dynamic model of the rectifier, so it cannot guarantee a fast start up response. As the high input current quality and fast start up response are conflicting objectives and with improving one of them, another is degraded, for designing a PI controller which can provide both of them, a Multi-Objective optimization approach can be implemented. In this paper, for the first time, Strength Pareto Evolutionary Algorithm which is based on Pareto Optimality concept is used to gain a fast start up response as well as low input current distortion. In order to validate the proposed PI controller, simulation results are presented.
Predicting Solar Cell Performance from Terahertz and Microwave Spectroscopy (2022)

Abstract Mobilities and lifetimes of photogenerated charge carriers are core properties of photovoltaic materials and can both be characterized by contactless terahertz or microwave measurements. Here, the expertise from fifteen laboratories is combined to quantitatively model the current‐voltage characteristics of a solar cell from such measurements. To this end, the impact of measurement conditions, alternate interpretations, and experimental inter‐laboratory variations are discussed using a (Cs,FA,MA)Pb(I,Br) 3 halide perovskite thin‐film as a case study. At 1 sun equivalent excitation, neither transport nor recombination is significantly affected by exciton formation or trapping. Terahertz, microwave, and photoluminescence transients for the neat material yield consistent effective lifetimes implying a resistance‐free JV‐curve with a potential power conversion efficiency of 24.6 %. For grainsizes above ≈20 nm, intra‐grain charge transport is characterized by terahertz sum mobilities of ≈32 cm 2 V −1 s −1 . Drift‐diffusion simulations indicate that these intra‐grain mobilities can slightly reduce the fill factor of perovskite solar cells to 0.82, in accordance with the best‐realized devices in the literature. Beyond perovskites, this work can guide a highly predictive characterization of any emerging semiconductor for photovoltaic or photoelectrochemical energy conversion. A best practice for the interpretation of terahertz and microwave measurements on photovoltaic materials is presented.
Clustered Mixture Particle Filter for Underwater Multitarget Tracking in Multistatic Active Sonobuoy Systems (2011)

The problem of multitarget tracking in underwater multistatic active sonobuoy systems is challenging because of the large number of false contacts and multiple reflections that reach the receivers. Targeting a robust solution that can track an unknown time-varying number of multiple targets, while keeping continuous tracks even in scenarios with large number of false contacts per ping, a particle filter (PF)-based technique is proposed in this paper. The PF is a nonlinear filtering technique that can accommodate arbitrary sensor characteristics, motion dynamics, and noise distributions. An enhanced version of the PF called the mixture PF is utilized in this paper. While the sampling/importance resampling PF samples from the prior importance density and weights the particles according to the observation likelihood, the mixture PF samples from both importance densities and weights the different groups of particles respectively. The usage of this mixture of importance densities provides better performance and faster convergence to the true targets locations. In order to track an unknown time-varying number of targets, two mixture PFs are used (one for target detection and the other for tracking multiple targets), and a density-based clustering technique. The first filter starts with random uniformly distributed samples over the surveillance area and resets every five pings. Just before the reset, the clustering technique runs to detect the clusters that corresponds to different targets and passes them to the second filter. The performance of the proposed technique is examined and demonstrated by different simulated scenarios and some real datasets from the SEABAR07 trial by the NATO Underwater Research Center.
Reactive 5'-substituted thymidine derivatives as potential inhibitors of nucleotide biosynthesis (1986)

Fourteen derivatives of thymidine substituted at the 5'-position with haloacetamido (2-4), 2- and 3-bromopropionamido (5 and 6), bromoacetoxy (7), O-mesylglycolamido (8), bromo- and chloro-N-methylacetamido (10 and 11), bromomethanesulfonamido (12), ethyloxamido (13), 4- and 3-(fluorosulfonyl)benzamido (14 and 15), and (phenoxycarbonyl)amino (16) groups have been synthesized and evaluated as potential inhibitors of enzymes that metabolize purine and pyrimidine nucleosides. Rates of reaction of these nucleosides with mercaptoethanol at pH 7 were compared and related to biological activity. Compounds 2, 3, and 7 were cytotoxic to H.Ep.-2 and L1210 cells in culture and 5'-(bromo- and iodoacetamido)-5'-deoxythymidine (2 and 3) showed good activity against P388 leukemia in mice.
ChemInform Abstract: DIFFICULTY OF CLASSIFYING DIELS‐ALDER REACTIONS INTO “NORMAL” AND “INVERSE” (1981)

Abstract Anhand der Reaktivität von Maleinsäureanhydrid, ‐thioanhydrid und ‐imid sowie ihrer Dichlorderivate gegenüber 9,10‐Dimethyl‐anthracen zeigt sich, daß außer dem Abstand der Grenzorbitale auch die Grenzorbitaldichte beider Partner der Diels‐Alder‐Reaktion bedeutsam sind.
Application of statistical signal processing for condition monitoring of rotor faults in induction motor (1993)

The paper presents the research and development effort in finding a reliable and economical rotor fault condition monitoring system using an ordinary 486 PC together with a readily obtained inexpensive 14 bit AD converter. The work presented in this paper focuses mainly on the no-load data so as to avoid the effect of cyclic variation of the load pattern upon the current signature obtained via current transformers which are readily available in large machines. Results obtained from laboratory sized 2.2 kW cage induction motors are also presented.
Predicting TV in the year 2013 (2011)

TV technology is rapidly advancing. This paper focuses on describing the current trends of television industry, and predicting the situation until 2013. Now it seems that the fusion among TV, Internet and personal mobile device is unstoppable depending on the current trends. As interactive TV, HDTV, 3DTV and all of these television devices which could enhance consumer experience and interactive activities have gradually become the mainstream.
Regulation of apoptosis during development: input from the extracellular matrix (review). (1998)

Programmed cell death or apoptosis is an important aspect in organogenesis and tissue remodeling during development. Extensive investigations have led to the identification of many genes that participate in the regulation of cell death execution. These include the caspases and nucleases, which are involved in the degradation of cellular proteins and nuclear DNA to initiate the irreversible death process. In addition, several families of proteins like Bcl-2 superfamily can either prevent or promote cell death. The function of these proteins are getting to be understood. On the other hand, how these proteins are regulated remains to be investigated. This is in part due to the presence of diverse upstream signals that can influence cell fate. One such signal is the remodeling of the extracellular matrix (ECM), which is largely due to the action of matrix metalloproteinases (MMPs). The regulation of MMPs and ECM remodeling has been shown to affect apoptosis in different systems, including the apoptotic remodeling of the intestine during Xenopus laevis metamorphosis and post-lactation involution of the mouse mammary gland. Current evidence suggests that ECM regulates cell fate at least in part through its membrane receptors, the integrins, which in turn send the signal through yet poorly understood pathways to the nucleus to regulate gene expression.
A low-dose start in hormone replacement therapy provides a beneficial bleeding profile and few side-effects: randomized comparison with a conventional-dose regimen (2004)

Continuous combined HRT should be started, and continued, with the lowest effective doses. An increase of the estrogen dose is recommended only if the initial dose is not sufficient for symptom control.
Separator based sparsification for dynamic planar graph algorithms (1993)

Article Free Access Share on Separator based sparsification for dynamic planar graph algorithms Authors: David Eppstein View Profile , Zvi Galil View Profile , Giuseppe F. Italiano View Profile , Thomas H. Spencer View Profile Authors Info & Claims STOC '93: Proceedings of the twenty-fifth annual ACM symposium on Theory of ComputingJune 1993 Pages 208–217https://doi.org/10.1145/167088.167159Published:01 June 1993Publication History 23citation582DownloadsMetricsTotal Citations23Total Downloads582Last 12 Months25Last 6 weeks2 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF