gebhart/patrepeval huggingface dataset:
Persistent resonance frequency shift of MoS2 mechanical resonator by laser irradiation (2019)

We investigate the persistent photoconductivity effects on MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> mechanical resonator toward high performance of optically tuned nano-electro-mechanical systems. After the laser irradiation, the resonance frequency of the resonator shifted downward over than 20 minutes, which is induced by not photothermal effects but persistent photoconductivity effects. In our case, the origin of persistent photoconductivity is most likely due to the trapped photogenerated holes at defects or contaminations on MoS <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> . The trapped holes induce softening effects on electrostatic force between mechanical resonator and the substrate, which decreases resonance frequency.
Anomalous association behavior of an ethylene oxide/propylene oxide ABA block copolymer in water (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnomalous association behavior of an ethylene oxide/propylene oxide ABA block copolymer in waterZukang Zhou and Benjamin ChuCite this: Macromolecules 1987, 20, 12, 3089–3091Publication Date (Print):May 1, 1987Publication History Published online1 May 2002Published inissue 1 May 1987https://pubs.acs.org/doi/10.1021/ma00178a027https://doi.org/10.1021/ma00178a027research-articleACS PublicationsRequest reuse permissionsArticle Views340Altmetric-Citations89LEARN 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
Tuning the interactions of a magnetic colloidal suspension (2003)

We present a versatile experimental system of magnetic charged nanospheres dispersed in water that belongs to both dipolar and electrostatic systems. In this system, the interactions can be continuously tuned by varying the ionic strength I. At low I, the potential is a strongly repulsive Yukawa potential that leads to a phase diagram similar to the one of repulsive spheres (fluid and solid phases). At high I, the potential is a globally attractive Lennard-Jones potential that leads to a phase diagram similar to the one of atomic systems (gas, liquid, fluid, and solid phases).
A metric to predict software scalability (2003)

Software system scalability is an important issue for most businesses. It is essential that as the customer base increases, and therefore the system has to deal with significantly increased loads, the system is prepared to handle the increased traffic so that the users do not encounter unacceptable system performance. For this reason we introduce a new metric, the PNL metric, that can be used to predict the likely loads at which the probability of performance problems will exceed acceptable levels. A case study is described that demonstrates the application of the PNL metric to a large industrial software system. A description of the steps taken to model the software and collect data is provided, as well as the computation of the PNL metric and implications derived from the computation for this system. This information was used by the project to help plan for additional capacity so that the performance experienced by customers was likely to remain acceptable.
A Luciferase/Single‐Walled Carbon Nanotube Conjugate for Near‐Infrared Fluorescent Detection of Cellular ATP (2010)

Mittels Fluoreszenzlöschung liefert das im Titel genannte Konjugat räumlich-zeitliche Informationen über ATP in lebenden Zellen: OxyLrin, das in der enzymatischen Reaktion zwischen ATP und D-Luciferin (Lrin) erzeugt wird, adsorbiert an die Nanoröhren und löscht deren Fluoreszenz (siehe Bild). Der Sensor ist hoch selektiv für ATP.
A Clinical Model for the Early Diagnosis of Acute Pancreatitis in the Emergency Department (2018)

In emergency department patients with lipase elevated to 3 times the upper limit of normal or greater, this model helps identify AP risk before imaging. Prospective validation studies are needed to confirm diagnostic accuracy.
Visualization of Middle Ear Ossicles in Elder Subjects with Ultra-short Echo Time MR Imaging (2016)

The body of the incus was consistently visualized with intensity between air and labyrinthine fluid on PETRA images in aged subjects. Poor visualization of the manubrium of the malleus, long process of the incus, and the stapes limits clinical significance of middle ear imaging with current PETRA methods.
P717HuR mediate the sinergistic effects of Angiotensin II and interleukin 1beta on vascular COX-2 expression and cell migration (2014)

Purpose. Angiotensin II (Ang II) and interleukin 1b (IL-1β) are involved in cardiovascular diseases inducing pro-inflammatory enzymes such as cyclooxygenase 2 (COX-2). COX-2 is an early response gene regulated by its transcription and by mRNA stability. Our purpose was to evaluate whether Ang II potentiates the effect of IL-1β on COX-2 expression and activity, the mechanisms involved in this effect and the functional consequence of this interaction. Methods. Rat aortic smooth muscle cells were stimulated with IL-1b or Ang II+IL-1b (4 or 24 h). mRNA and protein levels were measured by qPCR and western blot, respectively. The COX-2 promoter and 3'UTR activity were measured by luciferase assay. Immunofluorescence and cellular fractionation were used to analyze HuR cytoplasmic translocation. The binding of HuR to COX-2 mRNA was assessed by immunoprecipitation. Cell proliferation was analyzed by a commercial kit and cell migration by wound healing and transwell. In a mouse carotid ligation model, COX-2, mPGES-1 and TXAS were measured by immunohistochemistry. Results. 1) IL-1b (10 ng/ml) increased COX-2, mPGES-1 and TXAS expression. 2) Ang II (0.1 mM) increased PGIS and TXAS expression and potentiated and decreased, respectively, COX-2 and mPGES-1 expression induced by IL-1b. 3) The potentiation of COX-2 expression was accompanied by increased mRNA stability and 3'UTR luciferase activity. These effects were blocked by ERK1/2 and HuR inhibitors. 4) Ang II+IL-1b promoted HuR translocation to the cytoplasm and its binding to COX-2 mRNA. 5) Ang II did not affect cell proliferation but potentiated cellular migration induced by IL-1b; this effect was abolished by inhibitors of COX-2, TXAS, ERK1/2 and HuR and by antagonists of TP, EP-1 and EP-3 receptor. 6) PGE2 and a TXA2 analogue increased the cellular migration. 7) After the carotid ligation, COX-2, mPGES-1 and TXAS expression were increased. Conclusions. 1) Ang II differentially modulates COX-2, mPGES-1, PGIS and TXAS vascular expression induced by IL-1b. 2) The potentiation of IL-1β-induced COX-2 expression evoked by Ang II is mediated by ERK1/2 and it is due to an increase in the COX-2 mRNA stability mediated by HuR. 3) TXA2 and PGE2 derived from COX-2 participate in the effects of Ang II plus IL-1β on cell proliferation. 4) These effects could contribute to the vascular pro-inflammatory actions of Ang II and IL-1b.
Synthesis and Investigation of the Structural Properties of Al<sup>3+</sup> Doped Mg Ferrites (2015)

The polycrystalline ferrites of MgAlxFe2-xO4 (0.0≤x≤0.4) were prepared by the conventional solid state ceramic method. The specimens were sintered at 13500C and X-ray diffraction experiments were done at room temperature which showed single phased cubic spinel structure. The lattice parameters were determined from the XRD data using Nelson-Riley extrapolation method and found to decrease with increasing Al concentration obeying Vegard’s law. The cation distribution and oxygen position parameters have also been determined by refining the data using the RIETAN-2000 in the Rietveld method which reveals that the samples possess cubic symmetry corresponding to the space group Fd-3m. The X-ray density and bulk density of each sample were calculated using the lattice parameters. The porosity has been determined from X-ray density (ρx) and bulk density (ρB) and it changes monotonically with Al content.
Linearity considerations for a near-infrared laser diode intracavity absorption spectrophotometer (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLinearity considerations for a near-infrared laser diode intracavity absorption spectrophotometerJames. Hicks and Gabor. PatonayCite this: Anal. Chem. 1990, 62, 14, 1543–1545Publication Date (Print):July 15, 1990Publication History Published online1 May 2002Published inissue 15 July 1990https://doi.org/10.1021/ac00213a040RIGHTS & PERMISSIONSArticle Views64Altmetric-Citations10LEARN 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 (410 KB) Get e-Alerts Get e-Alerts
Synthesis of Oligodeoxynucleotides Containing a Single 6α- or 6β-Diastereoisomer of N2-(Estradiol-6-yl)-2‘-deoxyguanosine (2006)

DNA damage induced by estrogens is associated with developing breast, ovary, and endometrial cancers. The quinone of 2-hydroxyestrogen (2-OHE), a major estrogen metabolite, produces 2-OHE-derived dG and dA adducts in DNA. N(2)-[Estradiol-6(alpha or beta)-yl]-2'-deoxyguanosine [dG-N(2)-6(alpha or beta)-E(2)] lacking a 2-OH moiety may also be formed through sulfonation of 6-hydroxyestrogen. To explore the biological properties of such estrogen-DNA adducts, oligodeoxynucleotides modified by estrogen-derived DNA adduct were prepared by chemical synthesis. Initially, 6alpha- and 6beta-aminoestradiol 17-acetate (6alpha- and 6beta-NH(2)-E(2) 17Ac) were prepared by reductive amination of 6-oxo-estradiol 3,17-diacetate. The DMT-phosphoramidite derivative of N(2)-(3,17-diacetoxyestradiol-6alpha-yl)-2'-deoxyguanosine and its 6beta-isomer were prepared by coupling 5'-O-(4,4'-dimethoxytrityl)-2-fluoro-O(6)-[2-(4-nitrophenyl)ethyl]-2'-deoxyinosine separately with 6alpha- and 6beta-forms of NH(2)-E(2) 17Ac, respectively, followed by selective acetylation of the steroidal 3-hydroxyl group. The desired oligodeoxynucleotide containing a single dG-N(2)-6alpha-E(2) or dG-N(2)-6beta-E(2) was prepared efficiently by an automated DNA synthesizer. Synthesis of these site-specifically modified oligodeoxynucleotides will benefit further research into the biological properties and three-dimensional structure of 6alpha- and 6beta-diastereoisomers of estrogen-DNA adducts.
Histopathologic evaluation of the effects of etodolac in established adjuvant arthritis in rats: evidence for reversal of joint damage (1987)

Histopathologic evaluation of hindpaws from control rats with established adjuvant arthritis showed severe alterations in soft tissue and bone, as well as progressive, moderate-to-severe articular changes. Following treatment with etodolac for 28 days, soft tissue and articular changes were rated mild, and bone changes were rated moderate, but with remodeling. These findings indicate that etodolac partially reversed the joint damage in these rats.
Chemical Modification on Radiation Copolymerization of N-Vinyl-2-Pyrrolidone/2-(4-Methoxy-Benzylidine)-Malononitrile with Some Organic Compounds and Their Biological Activity (2013)

N-Vinyl-2-Pyrrolidone was copolymerized with 2-(4-methoxy-benzylidine)-malononitrile monomers to form a new copolymer containing nitrile groups. The characterization of copolymer and their modified with organic compounds such as thiourea, thiosemicarbazide, 2-aminothiazole, N-Glycyl glycine, 4-amino-N-[5-methyl-3-isoxazolyl]benzene sulfonamide and 4-amino-N-[4-methyl-2-pyrimidnyl]benzene sulfonamide was carried out by elemental analysis, FTIR, GPC, DSC, TGA and SEM. The biological activity of the modified copolymers was investigated. The results revealed that the biological activity of the modified copolymers was higher than those of the copolymer ones. An improvement of prepared copolymers by modification with various organic compounds showed great promise in some practical applications in the field of antibacterial activity.
Endoluminal pulse oximetry in ischemic colon in a swine model. (1995)

Low-flow sigmoidal ischemia can be detected and monitored with endoluminal pulse oximetry in this model of early sigmoidal ischemia.
Reconfigurable and writable magnetic charge crystals (2023)

Artificial ices enable the study of geometrical frustration by design and through direct observation. It has, however, proven difficult to achieve tailored long-range ordering of their diverse configurations, limiting both fundamental and applied research directions. An artificial spin structure design is described that produces a magnetic charge ice with tunable long-range ordering of eight different configurations. A technique is also developed to precisely manipulate the local magnetic charge states and demonstrate write-read-erase multi-functionality at room temperature. This globally reconfigurable and locally writable magnetic charge ice provides a setting for designing magnetic monopole defects, tailoring magnetics and controlling the properties of other two-dimensional materials.
Plasma channel microhole drilling technology (2004)

With growing economic and environmental pressures, oil companies seek ways to increase the oil recovery from every well. Re-entry drilling of horizontal sidetracks from existing wells and multilateral drilling for new wells are techniques which help to achieve that. However, new approaches are needed to reduce the cost and to improve efficiency of rotary drilling methods used for these purposes. This research aims to develop a new plasma channel drilling (PCD) method for drilling of small diameter holes (3.5-15 cm) for sidetrack creation and multilateral drilling. The method relies upon the use of the energy of impulse plasma discharges which are formed inside rock formation ahead of the drill position. Repeated formation of the plasma channel results in an effective and controlled drilling action. Plasma channel drills developed at Strathclyde University are able to cut clearly defined circular holes in sandstone with a speed of up to 16 cm/min. Plasma channel drilling has the potential to significantly increase the lifetime of oil wells and would dramatically reduce the cost of exploration drilling and subsurface data acquisition. PCD technology can also be a cost-effective and practical solution for other applications such as mineral mining, water boring, scale removal where micro-hole drilling is essential.
ChemInform Abstract: A New Method for the Preparation of Tetrazoles from Nitriles Using Trimethylsilylazide/Trimethylaluminum. (1994)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
A hierarchical automatic phoneme recognition model forHindi‐Devanagariconsonants using machine learning technique (2023)

Abstract A phoneme is perceptually the smallest distinct sound unit distinguished among words in a particular language. Every language has its own set of phonemes, and all the words are ordered sequences of phonemes. Therefore, phoneme recognition is essential to automatic speech recognition (ASR) systems. Phonemes of a language can be classified together using a single machine learning (ML) model through the direct classification (also known as the baseline or flat classification) approach. However, it is observed that the performance of such phoneme recognition degrades with the increase in the number of phoneme classes. The challenge is pronounced in languages with a larger number of phoneme classes, like Hindi, which has 48 phonemes. In this paper, we propose a speaker‐independent hierarchical classification approach for 33 Hindi‐Devanagari consonants/phonemes using cepstral features with ML techniques like support vector machine (SVM), random forest (RF) and fully connected deep neural network (DNN). In this hierarchical approach, a given phoneme is classified into successive subgroups until the particular phoneme class is identified. To perform the classification task, a binary or multi‐class classifier is invoked for each internal (non‐leaf) node in the hierarchy tree. Our model identified pairs of Optimal Feature Sets (based on mutual information ) and the best suitable ML classifier for each internal decision node in the hierarchy using 10‐fold cross‐validation to help in efficient classification. Our proposed hierarchical model leads to better accuracy and 57% improved performance for phoneme recognition compared with the non‐hierarchical, that is, the direct classification approach.
Genetic variation in acquisition, and utilization of phosphorus from iron-bound phosphorus in pigeonpea (1997)

Abstract In earlier experiments it was observed that pigeonpea is one of the few crop species that can utilize fixed forms of soil-P, particularly iron-bound P (Fe-P). The present investigation was aimed at assessing the genotypic variation in P uptake from Fe-P in pigeonpea. Fifteen pigeonpea germplasm lines that comprised genotypes of different maturity groups and three wild relatives were grown in vermiculite supplied with 15 mg P either as Fe-P or Ca-P for 60 d. Significant genetic variation in P uptake from Fe-P was observed; also P-use efficiency varied substantially among the genotypes. Dry matter production was positively correlated with P uptake both under Fe-P and Ca-P treatments (r=0.78**; r=0.63*; n=15). There was no significant relation between P-use efficiency and dry matter production. Wild related species did not show higher P uptake from Fe-P than the cultivated pigeonpea. From Fe-P, the P uptake was only 36% of that from Ca-P. The best genotypes in the present study took up an amount of P equivalent to 55% of that from Ca-P. Significant differences were detected in P-uptake efficiency (μg P mg−1 root d.wt.) among the genotypes, but P uptake efficiency did not correlate with total P uptake. A positive correlation was found between P uptake and root dry matter production under Ca-P and Fe-P treatments (r=0.78**; r=0.63*; n=15). The differential P uptake by ICPL 88039, C 11, ICPL 88032, and ICPL 87 from Fe-P in the vermiculite study was confirmed in soil culture where the soil contained a small amount of available P, but substantial amounts of AI- and Fe-P. The results demonstrated the presence of a significant genotypic variation in P uptake from Fe-P in pigeonpea.
Microstructured objects produced by the supramolecular hierarchical assembly of an organic free radical gathering hydrophobic-amphiphilic characteristics (2012)

The different weak non-covalent interactions established between “hydrophobic–amphiphilic” fluorescent and paramagnetic organic free-radical molecules, and solvents result in the formation of hierarchically self-assembled multifunctional superhydrophobic materials with very unusual shapes.
When the interface is a talking dinosaur (1998)

Article Free AccessWhen the interface is a talking dinosaur: learning across media with ActiMates Barney Share on Author: Erik Strommen Microsoft Corporation, One Microsoft Way, Redmond, WA Microsoft Corporation, One Microsoft Way, Redmond, WAView Profile Authors Info & Claims CHI '98: Proceedings of the SIGCHI Conference on Human Factors in Computing SystemsJanuary 1998 Pages 288–295https://doi.org/10.1145/274644.274685Online:01 January 1998Publication History 43citation947DownloadsMetricsTotal Citations43Total Downloads947Last 12 Months21Last 6 weeks5 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
Automatic interpretation and coding of face images using flexible models (1997)

Face images are difficult to interpret because they are highly variable. Sources of variability include individual appearance, 3D pose, facial expression, and lighting. We describe a compact parametrized model of facial appearance which takes into account all these sources of variability. The model represents both shape and gray-level appearance, and is created by performing a statistical analysis over a training set of face images. A robust multiresolution search algorithm is used to fit the model to faces in new images. This allows the main facial features to be located, and a set of shape, and gray-level appearance parameters to be recovered. A good approximation to a given face can be reconstructed using less than 100 of these parameters. This representation can be used for tasks such as image coding, person identification, 3D pose recovery, gender recognition, and expression recognition. Experimental results are presented for a database of 690 face images obtained under widely varying conditions of 3D pose, lighting, and facial expression. The system performs well on all the tasks listed above.
Epidemiology of Stomach Cancer in Japan With Special Reference to the Strategy for the Primary Prevention (1984)

Characteristics of both descriptive and analytic epidemiology of stomach cancer were summarised. Dietary changes, especially reduced intake of salted food mainly due to the wider use of electric refrigerator, were considered as the major reasons of recent decline in mortality. Other features of descriptive epidemiology such as socio-economic variation, lower risk in Okinawa residents and Japanese migrants to the U.S.A. were also described. In analytic epidemiology, daily cigarette smoking was found as a risk-enhancing factor in addition to frequent intake of salted food. Daily intake of green-yellow vegetables, soybean paste soup and milk were considered as risk reducing factors. Possibilities of primary prevention of stomach cancer was discussed based on these findings.