gebhart/patrepeval huggingface dataset:
Infrared spectroscopic studies of the reactions of copper and ammonia in cryogenic argon matrices (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared spectroscopic studies of the reactions of copper and ammonia in cryogenic argon matricesDavid W. Ball, Robert H. Hauge, and John L. MargraveCite this: Inorg. Chem. 1989, 28, 8, 1599–1601Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April 1989https://pubs.acs.org/doi/10.1021/ic00307a035https://doi.org/10.1021/ic00307a035research-articleACS PublicationsRequest reuse permissionsArticle Views115Altmetric-Citations20LEARN 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
Additive, Füllstoffe und Fasern (2022)

No AccessSaechtling Kunststoff-HandbuchOct 2022Additive, Füllstoffe und FasernErwin Baur, Dietmar Drummer, Tim A. Osswald, Natalie RudolphErwin Baur, Dietmar Drummer, Tim A. Osswald, Natalie Rudolphhttps://doi.org/10.3139/9783446473614.007SectionsAboutPDF ToolsAdd to FavoritesDownload CitationTrack CitationsCopy LTI LinkPDF key 'share (en)' returned an object instead of string.FacebookTwitterEmailLinkedIn previous chapternext chapter FiguresReferencesRelatedDetails 2022Pages: 753-801Print ISBN: 978-3-446-46514-5eISBN: 978-3-446-47361-4 Copyright & Permissions© 2022 Carl Hanser Verlag GmbH & Co. KGPDF downloadLoading ...
Technologies for Ultralow Power Integrated Nonlinear Optical Circuits (2013)

The integration of photonic nanocavities provides new opportunities to study large-scale coherent optical networks with switching energies approaching the attojoule regime. We review our approaches to simulate, design, fabricate, and characterize nonlinear photonic circuits. Article not available.
Innovative use of BHAs and LWD Measurements to Optimize Placement of Horizontal Laterals (1999)

Abstract More than 50 horizontal laterals averaging 4600 feet in length have been drilled in a shallow, heavy oil reservoir in eastern Venezuela. Precise navigation through the formations was necessary to optimize placement of the lateral drainholes and maximize the percentage of reservoir sand exposed. To meet this requirement, an optimized bottom hole assembly (BHA) design and logging while drilling (LWD) interpretation technique were developed based on field experience. Measurement while drilling (MWD) continuous directional measurements were used to steer the well through the reservoir, along a specific well path chosen from three-dimensional (3D) seismic that covers the field area. The LWD azimuthal and bit electrode measurements were integrated with the 3D seismic to allow an interactive interpretation of the stratal boundaries present within the reservoir which resulted in continual refinements to the planned well path. Using the information derived from the LWD azimuthal and bit electrode measurements, the location of shale stringers, bed boundaries, and pay sand relative to the BHA could be determined and the well then steered in the appropriate direction to maintain an optimum position within the oil reservoir. As a result, the number of sidetracks was reduced and the percent sand encountered increased. The longest horizontal lateral in Venezuela was also drilled and completed as part of this project.
A Low-Cost, Passive Release Device for the Surveillance and Control of Mosquitoes (2019)

Mosquitoes continue to be a major threat to global health, and the ability to reliably monitor, catch, and kill mosquitoes via passive traps is of great importance. Global, low-cost, and easy-to-use outdoor devices are needed to augment existing efforts in mosquito control that combat the spread of disease, such as Zika. Thus, we have developed a modular, portable, non-powered (passive), self-contained, and field-deployable device suitable for releasing volatiles with a wide range of applications such as attracting, repelling, and killing mosquitoes. This unique device relies on a novel nested wick and two-reservoir design that achieves a constant release of volatiles over several hundred hours. Devices loaded with one of either two compounds, geraniol or 1-methylpiperazine (MP), were tested in a controlled environment (32 °C and 70% relative humidity), and both compounds achieved a constant release from our devices at a rate of 2.4 mg/h and 47 mg/h, respectively. The liquid payload can be volatile attractants or repellants as well as mosquitocide-containing feeding solutions for capture and surveillance. This low-cost device can be utilized for both civilian and military mosquito control purposes, but it will be particularly important for protecting those in economically repressed environments, such as sub-Saharan Africa and Central and South America.
Machine Learning Optimization of Lignin Properties in Green Biorefineries (2022)

Novel biorefineries could transform lignin, an abundant biopolymer, from byproduct waste to high-value products for a sustainable society. Here we report the optimization of the AquaSolv omni biorefinery for lignin via Bayesian optimization, a machine learning framework for sample-efficient and guided data collection. This tool allows us to relate the biorefinery conditions like hydrothermal pretreatment reaction severity and temperature with multiple experimental outputs such as lignin structural features characterized using 2D nuclear magnetic resonance spectroscopy. By applying a Pareto front analysis to our models, we can find the processing conditions that simultaneously optimize the lignin yield and the amount of β-O-4 linkages for the depolymerization of lignin into platform chemicals. Our study demonstrates the potential of machine learning to accelerate the development of sustainable chemical processing techniques for targeted applications and products.
Synthesis and degradation of FtsZ determines the first cell division in starved bacteria (2018)

In natural environments, microbes are typically non-dividing. Such quiescent cells manage fleeting nutrients and gauge when intra- and extracellular resources permit division. Quantitative prediction of the division event as a function of nutritional status is currently achieved through phenomenological models for nutrient-rich, exponentially growing cultures. Such models, however, cannot predict the first division of cells under limiting nutrient availability. To address this, we analyzed the metabolic capability of starved Escherichia coli that were fed pulsed glucose at defined frequencies. Real-time metabolomics and microfluidic single-cell microscopy revealed unexpected, rapid protein and nucleic acid synthesis already in non-dividing cells. Additionally, the lag time to first division shortened as pulsing frequency increased. Here, we demonstrate that the first division from a non-dividing state occurs when the facilitating protein FtsZ reaches division-supporting concentration. A dynamic model quantitatively relates lag time to FtsZ synthesis from nutrient pulses and its protease-dependent degradation. Consistent with model predictions, lag time shortened when FtsZ synthesis was supplemented or protease inhibitors were added. Lag time prolonged when ftsZ was repressed or FtsZ degradation rate was increased. Thus, we provide a basis to quantitatively predict bacterial division using information about molecular determinants and the nutrient input.
The description, simulation, and automatic implementation of digital computer processors (1969)

Phosphorylation is an important biochemical reaction that plays a critical role in signal transduction pathways and cell-cycle processes. A text mining system to extract the phosphorylation relation from the literature is reported. The focus of this paper is on the new methods developed and implemented to connect and merge pieces of information about phosphorylation mentioned in different sentences in the text. The effectiveness and accuracy of the system as a whole as well as that of the methods for extraction beyond a clause/sentence is evaluated using an independently annotated dataset, the Phospho.ELM database. The new methods developed to merge pieces of information from different sentences are shown to be effective in significantly raising the recall without much difference in precision.
Partially Decentralised Context Management for P2P Communities (2008)

The retrieval of context information is usually limited on a single user. Though some context subscription methods do exist, the mechanisms are not optimised for distributing context information concerning a group of users. This paper presents a context management system that utilises the presence service architecture and user communities on top of P2PSIP network. The system is based on existing IETF standardisation efforts and utilises SIP-based messaging protocols in a novel way to improve management and distribution of community context information. The testing results show that our system clearly outperforms the method of individual subscriptions to context information when the number of members in a community increases. With large communities, the network traffic gain exceeds 60%, whereas the delay decreases to one-quarter.
A Method for Deriving Explicit Binary Isotherms Obeying the Ideal Adsorbed Solution Theory (2011)

Abstract A method to derive explicit binary isotherms following the ideal adsorbed solution (IAS) theory is proposed. The method is applicable to any pair of single‐component isotherms, as long as they fulfill a set of conditions, as described in this report. Examples of some isotherms fulfilling such conditions are: Langmuir, anti‐Langmuir, Brunauer‐Emmett‐Teller (BET), and quadratic. Following the method proposed in this report, three previously unreported explicit binary isotherms, quadratic‐BET, quadratic‐Langmuir, and quadratic‐anti‐Langmuir, while following the IAS framework, could be derived. This work presents the method and the binary isotherms derived through this method.
Electric Propulsion for the Psyche Mission: Development Activities and Status (2020)

NASA’s Psyche mission will launch in 2022 and begin a 3.6-year cruise to the metallic asteroid Psyche, where it will examine this unique body. The baseline spacecraft design is a hybrid of JPL’s deep-space heritage subsystems with commercial partner Maxar’s electric propulsion, power, and structure subsystems. All primary propulsion will be done with SPT-140 thrusters, which will be the first use of Hall thrusters for a NASA mission. The electric propulsion subsystem and its implementation for the Psyche mission are described here. Major testing activities have included the successful completion of subsystem integrated testing with the design modifications required for Psyche, and a series of low-power thrust repeatability tests that were performed in support of navigation analyses. Thruster performance models have been further validated with new SPT-140 flight data, and new analyses of thruster swirl torque have been performed that result in much higher values than previously estimated. Analysis of recent Maxar flight data has also provided a new understanding of in-flight propellant usage uncertainties. Subsystem integration and test activities are now underway and the status and plans are discussed.
Guiding light at criticality and beyond (2021)

We experimentally demonstrate waveguiding at the critical angle in a dielectric multi-layered structure. At this exceptional point, the waveguide becomes scale invariant and the field is confined to the low-index region, with a spatially-uniform transverse profile
Algorithm to extend reconstruction field-of-view (2005)

Images obtained from CT scanners are often used to estimate the radiation dose delivered to a target organ in oncology applications. Since a patient needs to be positioned in a similar manner as in a therapy machine, a portion of the patient is often positioned outside the scan field-of-view (SFOV). Projection truncation problem also occurs frequently in conventional CT scans and causes imaging artifacts that lead to suboptimal image quality. In this paper, we propose a reconstruction algorithm that enables an adequate estimation of the object outside the SFOV. We make use of the fact that the total attenuation of each ideal projection in a parallel sampling geometry remains constant over views. We use the magnitudes and slopes of the projection samples at the location of truncation to estimate water cylinders that can best fit to the projection data outside the SFOV. To improve the robustness of the algorithm, continuity constraints are placed on the fitting parameters. Extensive phantom and patient experiments were conducted to test the robustness and accuracy of the proposed algorithm.
Wideband Fresnel Focusing Array Response (1979)

At the 7th and gth International Symposium on acoustical imaging, we presented the first results obtained with a simple 2-state Fresnel focusing technique in achieving real time B scan imaging from a linear array of 160 transducers. This paper describes an investigation of different Fresnel focusing techniques i n the case of wideband signals, for annular and for rectangular array. A study of the impulse r esponse function is performed and a typical impulse echographic focusing process will be emphasized, which appears only in transmit-re ceive mode. It will be shown that the use of Fresnel array, more sophisticated t han the 2-state array, which combines delay corrections and 2state amplitude modulation will reduce very strongly the level of side lobes and improve the depth of focus.
TRANSITIONS FROM GUARDRAIL TO BRIDGE RAIL (2002)

The paper presents design details and test results for three guardrail-to-bridge rail transitions that have passed the NCHRP test requirements. The transitions were a nested W-beam with W-beam rub rail and steel posts to the vertical concrete bridge rail. Design features that contributed to the successful performance of these transitions are discussed.
Pyrogenic Toxin Superantigen Site Specificity in Toxic Shock Syndrome and Food Poisoning in Animals (2000)

Staphylococcus aureus and Streptococcus pyogenes express pyrogenic toxin superantigens (PTSAgs) that are associated with toxic shock syndrome (TSS) and staphylococcal food poisoning (SFP). Most PTSAgs cause TSS in deep-tissue infections, whereas only TSS toxin 1 (TSST-1) is associated with menstrual, vaginal TSS. In contrast, SFP has been linked only with staphylococcal enterotoxins (SEs). Because of the differential abilities of PTSAgs to cause systemic or localized symptoms in a site-dependent manner, the present study was undertaken to assess the toxins' abilities to cross mucosal barriers. The activity of three PTSAgs when delivered orally, vaginally, or intravenously to rabbits and orally to monkeys was investigated. TSST-1 induced shock via all three routes in rabbits. Although active when administered intravenously, SEC1 and streptococcal pyrogenic exotoxin A (SPEA) did not cause symptoms when administered orally or vaginally. Only SEC1 induced emesis in the monkey feeding assay. TSST-1, albeit less stable than SEC1 and SPEA to pepsin, induced diarrhea in monkeys. Our results may explain the unique association of TSST-1 with menstrual TSS and why SPEA is only rarely associated with TSS after pharyngitis, despite being highly associated with TSS after subcutaneous infections. Finally, our studies indicate that enterotoxicity in SFP is not the result of superantigenicity.
Effect of frequency on ultrasound-induced damage on cells in an in-vitro culture environment (2022)

Many types of bioengineering applications have been developed in these days, which accelerates studies for effective cell culture systems. Use of ultrasound has gotten attention in the effort to realize effective cell culture since cell functions can be regulated by ultrasound. Hence, for developing the techniques based on ultrasound exposure, it is required to reveal the tolerance of cells for ultrasound exposure (ultrasound tolerance). We thus developed the cell culture system irradiating ultrasound to cultured cells, which can be used for the study of ultrasound tolerance. With the system, ultrasound with different frequencies and exposure times and Chinese hamster ovary (CHO-K1) cells were employed, and the ultrasound tolerance has been investigated. As a result, the ultrasound tolerance of CHO-K1 depends on the frequency and exposure time of the ultrasound. From this result, we argue that the developed system can be used to study the ultrasound tolerance of cultured cells, which is helpful for developing effective cell culture systems based on ultrasound techniques.
Regulation of vertebrate muscle differentiation by thyroid hormone: The role of the myoD gene family (1995)

Skeletal myoblasts have their origin early in embryogenesis within specific somites. Determined myoblasts are committed to a myogenic fate; however, they only differentiate and express a muscle-specific phenotype after they have received the appropriate environmental signals. Once proliferating myoblasts enter the differentiation programme they withdraw from the cell cycle and form post-mitotic multinucleated myofibres (myogenesis); this transformation is accompanied by muscle-specific gene expression. Muscle development is associated with complex and diverse protein isoform transitions, generated by differential gene expression and mRNA splicing. The myofibres are in a state of dynamic adaptation in response to hormones, mechanical activity and motor innervation, which modulate differential gene expression and splicing during this functional acclimatisation. This review will focus on the profound effects of thyroid hormone on skeletal muscle, which produce alterations in gene and isoform expression, biochemical properties and morphological features that precipitate in modified contractile/mechanical characteristics. Insight into the molecular events that control these events was provided by the recent characterisation of the MyoD gene family, which encodes helix-loop-helix proteins; these activate muscle-specific transcription and serve as targets for a variety of physiological stimuli. The current hypothesis on hormonal regulation of myogenesis is that thyroid hormones (1) directly regulate the myoD and contractile protein gene families, and (2) induce thyroid hormone receptor-transcription factor interactions critical to gene expression.
LIFETIME MEASUREMENT OF ENERGY RESOLVED $NO_{2}$ FLUORESCENCE (1972)

With a pulsed narrow-band (0.1 {\\AA}) tunable dye laser, $NO_{2}$ fluorescence has been excited in the region 5850 - 5950 {\\AA}. By placing the $NO_{2}$ cell inside the resonant cavity of the laser, a 3/4-M Spex spectrometer can be used to energy resolve the fluorescence. The $NO_{2}$ fluorescence in a near collision-free environment ($&lt;$ 1 mtorr) consists of structural features superimposed on an apparent continuum. By directly observing the fluorescence decay, it is found that the structural features have a considerably shorter lifetime $(\\sim 10-30 \\mu sec)$ than the apparent continuum $(\\sim 70 \\mu sec)$. Moreover, the lifetime of the structural features show large fluctuations as a function of excitation wavelength. The nature of the excited electronic states involved and their coupling will be discussed.
Evaluation of a new metrology technique to support the needs of accuracy, precision, speed, and sophistication in near-future lithography (2009)

A new metrology technique is being evaluated to address the need for accuracy, precision, speed and sophistication in metrology in near-future lithography. Attention must be paid to these stringent requirements as the current metrology capabilities may not be sufficient to support these near future needs. Sub-nanometer requirements in accuracy and precision along with the demand for increase in sampling triggers the need for such evaluation. This is a continuation of the work published at SPIE Asia conference, 2008. In this technical presentation the authors would like to continue on reporting the newest results from this evaluation of such technology, a new scatterometry based platform under development at ASML, which has the potential to support the future needs. Extensive data collection and tests are ongoing for both CD and overlay. Previous data showed overlay performance on production layers [1] that meet 22 nm node requirements. The new data discussed in this presentation is from further investigation on more process robust overlay targets and smaller target designs. Initial CD evaluation data is also discussed.
Septic Cardiomyopathy: Getting to the Heart of the Matter* (2017)

Stanford Institute for Immunity, Transplantation and Infection Stanford University School of Medicine; and Division of Biomedical Informatics Research Department of Medicine Stanford University School of Medicine Stanford, CA *See also p. 407. Drs. Sweeney and Khatri are co-founders and stockholders of Inflammatix, which has a commercial interest in sepsis diagnosis. Dr. Sweeney's institution received funding from Bill & Melinda Gates Foundation. He received support for article research from the Bill & Melinda Gates Foundation. Dr. Sweeney and Dr. Khatri disclosed receiving funding from owning stock in Inflammatix. Dr. Khatri received support for article research from National Institutes of Health and from the Bill & Melinda Gates Foundation.
Chemiluminescence analysis of antioxidant capacity for serum albumin isolated from healthy or uremic volunteers (2016)

Regular hemodialysis treatment induces an elevation in oxidative stress in patients with end-stage renal failure, resulting in oxidative damage of the most abundant serum protein, albumin. Oxidation of serum albumin causes depletion of albumin reactive thiols, leading to oxidative modification of serum albumin. The aim of this study was to screen the antioxidant capacity of albumins isolated from uremic patients (HD-ALB) or healthy volunteers (N-ALB). From high-performance liquid chromatography spectra, we observed that one uremic solute binds to HD-ALB via the formation of disulfide bonds between HD-ALB and the uremic solute. Furthermore, we found using chemiluminescent analysis that the antioxidant capacities for N-ALB to scavenge reactive oxygen species including singlet oxygen, hypochlorite and hydrogen peroxide were higher than HD-ALB. Our results suggest that protein-bound uremic solute binds to albumin via formation of disulfide bonds, resulting in the depletion of albumin reactive thiols. The depletion of albumin reactive thiols leads to a reduced antioxidant capacity of HD-ALB, implying postmodification of albumin. This situation may reduce the antioxidant capacity of albumin and increase oxidative stress, resulting in increase in complications related to oxidative damage in uremic patients. Copyright © 2016 John Wiley & Sons, Ltd.