gebhart/patrepeval huggingface dataset:
Wireless temperature microsensors integrated on bearings for health monitoring applications (2011)

This paper reports the performance of a wireless MEMS bimorph temperature sensor integrated on a bearing for component health monitoring applications. The sensor consists of a robust array of bimorphs consisting of gold and thermally-grown oxide operable to at least 300°C. Fabrication details are included, as well as the hermetic packaging information. Speed of actuation results from a high-speed camera is included showing the actuation time is less than 600 μs. Reliability testing of the bimorph array up to 400 million thermal cycles is also shown, after which the bimorphs still yield consistent behavior. Finally, dynamic testing is performed showing actual bearing temperature values at different speeds on a real-world helicopter bearing.
Extracellular polymeric substances of the marine fouling diatom<i>amphora rostrata</i>Wm.Sm (2001)

Amphora rostrata was grown under continuous illumination at 27°C in batch cultures using f/2 medium. Cell biomass (measured as chllorophyll a and cell counts) reached a maximum on day 7. Thereafter, cell biomass as chl a showed a small decrease. Planktonic('free') and biofilm extracellular polymeric substances (EPS) from the adherent cells of A. rostrata were studied. Both types of EPS were produced during the logarithmic phase of growth. However, production was higher during the stationary growth phase. Enhanced EPS production was associated with nutrient deficient conditions. Planktonic and biofilm EPS were purified by gel filtration using Sephadex G‐200 and ion exchange chromatography using DEAE‐cellulose. Both polymers showed the presence of a single peak. Capillary gas Chromatographie analysis of both planktonic and biofilm EPS showed that fucose (36.7%) and galactose (27.6%) were the most abundant monosaccharides, with small quantities of rhamnose, xylose, arabinose, mannose and glucose. Other chemical analysis showed the presence of sulphate, uronic acids, hexoamines, pyruvate and proteins in both the planktonic and bio‐film EPS. Uronic acid, pyruvate and sulphate together were found to contribute ∼50 to 60% (W/W) to the EPS of A. rostrata. Such a high content of non‐sugar components indicates their importance to the diatom in metal binding, desiccation prevention and flexibility.
Enabling the Discovery of Recurring Anomalies in Aerospace Problem Reports using High-Dimensional Clustering Techniques (2006)

This paper describes the results of a significant research and development effort conducted at NASA Ames Research Center to develop new text mining algorithms to discover anomalies in free-text reports regarding system health and safety of two aerospace systems. We discuss two problems of significant import in the aviation industry. The first problem is that of automatic anomaly discovery concerning an aerospace system through the analysis of tens of thousands of free-text problem reports that are written about the system. The second problem that we address is that of automatic discovery of recurring anomalies, i.e., anomalies that may be described in different ways by different authors, at varying times and under varying conditions, but that are truly about the same part of the system. The intent of recurring anomaly identification is to determine project or system weakness or high-risk issues. The discovery of recurring anomalies is a key goal in building safe, reliable, and cost-effective aerospace systems. We address the anomaly discovery problem on thousands of free-text reports using two strategies: (1) as an unsupervised learning problem where an algorithm takes free-text reports as input and automatically groups them into different bins, where each bin corresponds to a different unknown anomaly category; and (2) as a supervised learning problem where the algorithm classifies the free-text reports into one of a number of known anomaly categories. We then discuss the application of these methods to the problem of discovering recurring anomalies. In fact, because recurring anomalies tend to have very small cluster sizes, we explore new methods and measures to enhance the original approach for anomaly detection. We present our results on the identification of recurring anomalies in problem reports concerning two aerospace systems as well as benchmark data sets that are widely used in the field of text mining. The first system is the Aviation Safety Reporting System (ASRS) database, which contains several hundred-thousand free text reports filed by commercial pilots concerning safety issues on commercial airlines. The second aerospace system we analyze is the NASA Space Shuttle problem reports as represented in the CARS data set, which consists of 7440 NASA Shuttle problem reports. We show significant classification accuracies on both of these systems as well as compare our results with reports classified into anomaly categories by field experts
Ultra Wide Hybrid III-V on Silicon Tunable Laser (2018)

We demonstrated a wide wavelength-tuning range of 90 nm with a hybrid InP/SOI laser, based on two integrated intracavity silicon ring resonators which produce a Vernier effect, and a low losses silicon cavity delimited by broadband Sagnac mirrors.
Targeting Heat Shock Protein 70 to Ameliorate c-Jun Expression and Improve Demyelinating Neuropathy (2017)

Increased expression of the c-jun transcription factor occurs in a variety of human neuropathies and is critical in promoting Schwann cell (SC) dedifferentiation and loss of the myelinated phenotype. Using cell culture models, we previously identified KU-32 as a novobiocin-based C-terminal heat shock protein 90 (Hsp90) inhibitor that decreased c-jun expression and the extent of demyelination. Additional chemical optimization has yielded KU-596 as a neuroprotective novologue whose mechanistic efficacy to improve a metabolic neuropathy requires the expression of Hsp70. The current study examined whether KU-596 therapy could decrease c-jun expression and improve motor function in an inducible transgenic model of a SC-specific demyelinating neuropathy (MPZ-Raf mice). Treating MPZ-Raf mice with tamoxifen activates the MAPK kinase pathway, increases c-jun expression and produces a profound demyelinating neuropathy characterized by a loss of motor function and paraparesis. KU-596 therapy did not interfere with MAPK activation but reduced c-jun expression, significantly improved motor performance, and ameliorated the extent of peripheral nerve demyelination in both prevention and intervention studies. Hsp70 was necessary for the drug's neuroprotective efficacy since MPZ-Raf × Hsp70 knockout mice did not respond to KU-596 therapy. Collectively, our data indicate that modulating Hsp70 may provide a novel therapeutic approach to attenuate SC c-jun expression and ameliorate the onset of certain demyelinating neuropathies in humans.
7-Dehydrostigmasterol and ergosterol: the major sterols of an amoeba (1968)

The sterol fraction of Acanthamoeba (Neff) contains 60% 7-dehydrostigmasterol and 40% ergosterol. The sterols were characterized by infrared and ultraviolet spectroscopy, gas chromatography, specific reactions, and mass spectral analysis. Sterols constitute 5% of the lipids and 15% of the neutral lipids in this species.
Prognostics of Lithium-Ion Batteries Based on Battery Performance Analysis and Flexible Support Vector Regression (2014)

Accurate prediction of the remaining useful life (RUL) of lithium-ion batteries is important for battery management systems. Traditional empirical data-driven approaches for RUL prediction usually require multidimensional physical characteristics including the current, voltage, usage duration, battery temperature, and ambient temperature. From a capacity fading analysis of lithium-ion batteries, it is found that the energy efficiency and battery working temperature are closely related to the capacity degradation, which account for all performance metrics of lithium-ion batteries with regard to the RUL and the relationships between some performance metrics. Thus, we devise a non-iterative prediction model based on flexible support vector regression (F-SVR) and an iterative multi-step prediction model based on support vector regression (SVR) using the energy efficiency and battery working temperature as input physical characteristics. The experimental results show that the proposed prognostic models have high prediction accuracy by using fewer dimensions for the input data than the traditional empirical models.
Ric c 1 and Ric c 3, the Allergenic 2S Albumin Storage Proteins of Ricinus communis: Complete Primary Structures and Phylogenetic Relationships (1997)

The 2S albumin storage protein of Ricinus communis consists of the two heterodimeric proteins Ric c 1 and Ric c 3 each of which is composed of a small and a large subunit linked together by disulphide bridges. The complete primary structures of both heterodimeric proteins were determined by enzymatic degradation and automated Edman degradation. The sequences of all four chains correspond to the known cDNA sequence of the gene of a presumed precursor molecule and to the previously determined partial sequences for Ric c 1 and Ric c 3. In addition, few differences in amino acid positions were found which seem to be related to different varieties of R. communis. Sequence comparisons with 2S albumin from other plant genera revealed high degrees of homology and support the view of a common genetic origin of this protein family. Ric c 1 and Ric c 3 which have 11,212 and 12,032 daltons, respectively, share a similar molecular size, biological function and allergenicity with the 2S albumins from Brassica juncea (Braj 1E) and Sinapis alba L (Sin a 1). Ric c 1 and Ric c 3 may be classified as isoallergens if, additionally, the high degree of similarity in the position of polar residues is taken into account.
Thyroid cell growth, differentiation and function in the FRTL-5 cell line: a survey (1988)

Department of Medicine and Department of Cell and Structural Biology, University of Manchester, Stopford Building, Oxford Road, Manchester m139pt *Department of Clinical Biochemistry, Clinical Sciences Building, Hope Hospital, Eccles Old Road, Salford m6 8hd received 14 April 1988 Introduction An understanding of the mechanisms underlying the differentiation of mammalian cells represents one of the most challenging aspects of modern cell biology, and the success of investigations into such processes has been greatly influenced by the availability of experimental in-vitro systems in which the cellular environment closely resembles that encountered by the cells in vivo. For any particular cell type, however, the successful implementation of such experimental models is also dependent upon the isolation of long-term, stable cell lines having a normal phenotype and the differentiation characteristics of cells within the parent tissue. In the absence of a stable, characterized line of thyroid epithelial cells, early studies of thyroid
Photochemistry of phosphate esters: .alpha.-keto phosphates as a photoprotecting group for caged phosphate (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry of phosphate esters: .alpha.-keto phosphates as a photoprotecting group for caged phosphateRichard S. Givens, Phillip S. Athey, Bogdan Matuszewski, L. William Kueper III, Jieyou Xue, and Thomas FisterCite this: J. Am. Chem. Soc. 1993, 115, 14, 6001–6012Publication Date (Print):July 1, 1993Publication History Published online1 May 2002Published inissue 1 July 1993https://pubs.acs.org/doi/10.1021/ja00067a015https://doi.org/10.1021/ja00067a015research-articleACS PublicationsRequest reuse permissionsArticle Views842Altmetric-Citations84LEARN 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
Continuous Process for Automotive Cabin Air Dehumidification (1999)

<div class="htmlview paragraph">In this paper, we demonstrate the feasibility of a novel continuous regeneration process for cabin air humidity control. The technique does not require the use of moving wheels or beds, and may be powered using waste heat. The operation is based on the use of trilobal (wicking) fiber technology. The trilobal fibers are arranged in a continuous parallel array, which is formed into a flat panel water transfer element. The fibers are impregnated with desiccant salt solutions (calcium chloride, lithium chloride, etc.) which are capable of reversible capture of gas phase water molecules. Steady state water transfer was achieved using a number of dessicant salt solutions. The effects of critical variables such as residence time and the quantity of fiber on the level of water transfer were also determined.</div>
Equivalent Stiffness and Damping Investigation of a Hydrostatic Journal Bearing (2007)

The aim of this research is to study the dynamic characteristics of a hydrostatic journal bearing, with four hydrostatic bearing flat pads fed by diaphragm restrictors and supporting a rotor. We assumed that the fluid flow is incompressible, laminar, isothermal, and steady-state. Linear modeling was performed using a numerical method in order to investigate the effects of the film thickness, the recess pressure, and the geometric configuration on the equivalent stiffness and damping of a hydrostatic journal bearing. In the first step, the variation of equivalent stiffness and damping is studied according to the pressure ratio for different geometric configurations of a hydrostatic bearing at the point of operation. In the second step, the variation of the equivalent stiffness and damping is studied according to the ratio of the film thickness for different geometric configurations of a hydrostatic bearing when one moves away from the point of operation. The results show that the hydrostatic journal bearing has good dynamic characteristics and excellent stability because of its higher stiffness, damping, and zero cross-coupling terms.
Photorefractive composite materials with bi-functional charge transporting second-order nonlinear optical chromophores (1996)

Two bi-functional chromophores have been developed which possess second-order nonlinear optical and charge transporting properties. The second-order nonlinearity arises from conjugated structures terminated by donor and acceptor groups and the charge transporting property results from a triphenylamine moiety. The bi-functionality of the chromophores is confirmed by the large electro-optic coefficients and high photoconductivities of composites containing these chromophores. These chromophores have been incorporated into an inert polymer to form photorefractive composite materials when doped with a photocharge generation sensitizer. The electro-optic coefficients and photoconductivity of these composites have been measured as a function of the applied electric field as well as of the chromophore concentration. The dependence of the four-wave mixing diffraction efficiency, holographic grating writing rate, and two-beam coupling gain on the applied electric field and on the chromophore concentration have been evaluated. A quantitative relationship between the chromophore concentration and a number of photorefractive parameters including electro-optic coefficient, photoconductivity, four-wave mixing diffraction efficiency, and grating writing rate has been established.
A fuzzy probabilistic model for the generalized Hough transform (1994)

A fuzzy-probabilistic model of the generalized Hough transform (GHT) based on qualitative labeling of scene features is presented. Qualitative labeling of scene features is shown to be effective in pruning the search space of possible scene interpretations and also reducing the number of spurious interpretations explored by the GHT. Qualitative labeling of scene features is shown to result in the formulation of a weighted generalized Hough transform (WGHT) where each match of a scene feature with a model feature is assigned a weight based on the qualitative attributes assigned to the scene feature. These weights are looked upon as membership function values for the fuzzy sets defined by these qualitative attributes. A fuzzy-probabilistic model for the WGHT is presented. Analytical expressions for the probability of accumulation of random votes are derived for the WGHT and compared with the corresponding expressions for the conventional GHT. The WGHT is shown to perform better than the conventional GHT. Experimental results on intensity and range images are presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Evaluation of the potential of kartogenin encapsulated poly(L-lactic acid-co-caprolactone)/collagen nanofibers for tracheal cartilage regeneration (2017)

Tracheal stenosis is one of major challenging issues in clinical medicine because of the poor intrinsic ability of tracheal cartilage for repair. Tissue engineering provides an alternative method for the treatment of tracheal defects by generating replacement tracheal structures. In this study, we fabricated coaxial electrospun fibers using poly(L-lactic acid-co-caprolactone) and collagen solution as shell fluid and kartogenin solution as core fluid. Scanning electron microscope and transmission electron microscope images demonstrated that nanofibers had uniform and smooth structure. The kartogenin released from the scaffolds in a sustained and stable manner for about 2 months. The bioactivity of released kartogenin was evaluated by its effect on maintain the synthesis of type II collagen and glycosaminoglycans by chondrocytes. The proliferation and morphology analyses of mesenchymal stems cells derived from bone marrow of rabbits indicated the good biocompatibility of the fabricated nanofibrous scaffold. Meanwhile, the chondrogenic differentiation of bone marrow mesenchymal stem cells cultured on core-shell nanofibrous scaffold was evaluated by real-time polymerase chain reaction. The results suggested that the core-shell nanofibrous scaffold with kartogenin could promote the chondrogenic differentiation ability of bone marrow mesenchymal stem cells. Overall, the core-shell nanofibrous scaffold could be an effective delivery system for kartogenin and served as a promising tissue engineered scaffold for tracheal cartilage regeneration.
Uncertainty analysis for reflectance colorimetry (2004)

Abstract The uncertainty associated with the quantitative description of the color of an object is often necessary for determining the acceptability of that object for its intended application. Uncertainties are also required for establishing the traceability of a measurement to a national metrology institute. A systematic, analytical approach to uncertainty analysis, which conforms to currently accepted practice, is presented for reflectance colorimetry. Two important concepts are stressed—the measurement equation describing the relation between signals and the spectral reflectance factor and correlations both between signals at the same wavelength and between reflectance factors at different wavelengths. The approach is illustrated by considering representative object colors and instrument parameters. © 2004 Wiley Periodicals, Inc. Col Res Appl, 29, 205–216, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/col.20006
Memory access optimization of dynamic binary translation for reconfigurable architectures (2005)

Recently, reconfigurable architectures, which outperform DSP processors, have become important. Although many compilers have been developed on a source-level, there are several practical benefits to translating the binary targeted to popular processors onto reconfigurable architectures. However, the translated code could be less optimized. In particular, it is difficult to optimize memory accesses on a binary to exploit pipeline parallelism. This paper introduces dynamic binary translation and memory access optimization to overcome the limitations of static binary translation for reconfigurable architecture. The experimental results show a promising speedup up to 3.02 compared with the code whose memory accesses is not optimized in the pipeline fashion.
The Impact of Seller Reputation on the Performance of online sales (2009)

The understanding of the seller reputation and sales performance relationship is an important topic in C2C market. Previous research has mainly focused on the C2C market in the U.S. The findings of that research have not been validated in countries with different cultural backgrounds such as China. With the explosive growth of electronic markets in China, the study of C2C online sales becomes increasingly important. This paper attempts to understand seller reputation effects on sales price, number of sales, and total revenue, based on But-It-Now (BIN) data collected from TaoBao.com, the largest online auction site in China. Multiple regression analysis is performed to test the significance of the effects. This study revealed cross effects of negative ratings on the performance of a seller. By separating the cross effects of magnitude and reputation of negative ratings, this study demonstrated that positive ratings have a significant positive impact on the performance of sellers, while negative ratings have negative reputation effects and positive magnitude effects. This is the first study that has focused on understanding the Buy-It-Now pricing and seller reputation relationship. Since the BIN feature is the most popular way of selling in online C2C markets in China, we believe the findings of this research will provide insight to researchers performing cross-cultural comparisosn between China and other markets.
Substrate ectodomain is critical for substrate preference and inhibition of γ-secretase (2013)

Understanding the substrate recognition mechanism of γ-secretase is a key step for establishing substrate-specific inhibition of amyloid β-protein (Aβ) production. However, it is widely believed that γ-secretase is a promiscuous protease and that its substrate-specific inhibition is elusive. Here we show that γ-secretase distinguishes the ectodomain length of substrates and preferentially captures and cleaves substrates containing a short ectodomain. We also show that a subset of peptides containing the CDCYCxxxxCxCxSC motif binds to the amino terminus of C99 and inhibits Aβ production in a substrate-specific manner. Interestingly, these peptides suppress β-secretase-dependent cleavage of APP, but not that of sialyltransferase 1. Most importantly, intraperitoneal administration of peptides into mice results in a significant reduction in cerebral Aβ levels. This report provides direct evidence of the substrate preference of γ-secretase and its mechanism. Our results demonstrate that the ectodomain of C99 is a potent target for substrate-specific anti-Aβ therapeutics to combat Alzheimer's disease.