gebhart/patrepeval huggingface dataset:
Modificación de las propiedades de matrices cementantes mediante la adición de partículas de nanosílice (2016)

Modificación de las propiedades de matrices cementantes mediante la adición de partículas de nanosíliceRESUMENEste trabajo de investigación evaluó el efecto de la adición de nanopartículas de sílice (NS) a dos matrices cementantes, base cemento portland ordinario y cemento sulfoaluminoso, con el fin de establecer su influencia en las propiedades mecánicas y de resistencia química de dichos materiales. Para esto, se adicionaron las NS en dosificaciones de 0.30% a 5.0% en peso. Los resultados indicaron que la resistencia a la compresión y al ataque químico por sulfatos, se ven mejoradas debido a la adición de NS. La resistencia al ataque químico por sulfatos se mejoró de forma importante con la presencia de NS en comparación al cemento sin adiciones. Este resultado sugiere que ambas matrices presentaron una mayor densificación.Palabras claves: Reactividad, materiales cementosos suplementarios. Effect of the addition of nanosilica particles on the properties of two cementitious matricesABSTRACTThis research focused on evaluating the effect of adding silica nanoparticles (NS) to two cementitious matrices, as ordinary portland and sulfoaluminate cement, in order to establish their influence on the mechanical and chemical properties. To conduct this evaluation, the NS were added in dosages of 0.30-to-5.0% by mass relative to cement. The results indicated that the compressive strength and resistance to chemical attack by sulfates were improved due to the addition of silica nanoparticles, in both matrices. Finally, the resistance to chemical attack by sulfates showed an improvement with the addition of silica nanoparticles when comparing with pure cement, suggesting an increase in the densification.Keywords: Reactivity, supplementary cementitious materials. Modificação das propriedades de matrizes cimentícias através da adição de partículas de nanosílicaRESUMOEste estudo avaliou o efeito da adição de nanopartículas de sílica (NS) em duas matrizes cimentícias, base cimento Portland comum e cimento sulfoaluminoso, a fim de estabelecer a sua influência sobre as propriedades de resistência mecânica e química dos referidos materiais. Para isso, foram adicionadas as NS em dosagens de 0,30% a 5,0% em massa. Os resultados indicaram que a resistência à compressão e ao ataque químico por sulfatos são aumentadas devido à adição do NS. A resistência ao ataque químico por sulfatos melhorou significativamente com a presença de NS em comparação com o cimento sem adições. Este resultado sugere que ambas as matrizes apresentaram uma maior densificação.Palavras-clave: Reatividade, materiais cimentícios suplementares.
A Geodesic Piezocrystal Array Driven by Modular Multichannel Electronics for Focused Ultrasound Surgery (2014)

No abstract available.
Real-time DC injection measurement technique for transformerless PV systems (2010)

DC injection suppression is crucial for the transformerless PV systems. IEEE Std.929-2000 specifies that the PV systems shall not inject the dc current greater than 0.5% of the full rated output current. DC injection measurement is not only useful for evaluating whether a transformerless PV system meets IEEE standards, but also for the effective dc suppression with injecting an equal but opposite dc component via a proper control scheme. In practice, however, it is difficult to extract the very low-level (0.5% I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rated</sub> ) dc currents in the presence of high levels of AC currents in transformerless PV systems. In order to overcome the limitation, this paper presents a real-time DC injection measurement technique. Some major issues such as the basic operating principle, frequency excursion effect mitigation and discrete-domain implementation of the proposed method are discussed. Theoretical analysis and performance evaluation results verify the effectiveness of the proposed DC injection measurement technique.
Architectural timing verification and test for super scalar processors (2002)

We address the problem of verification and testing of super scalar processors, from the point of view of correctness of [Bprogram execution time. Trace-driven architectural si[Bmulation methods are commonly used in current industrial practice to estimate cycles-per-instruction performance of a candidate processor organization, prior to actual implementation. We present a novel set of strategies for testing the timing correctness of processors as represented in an architectural timing model ("timer"). We focus on two main aspects of the theory: (a) deriving architectural test sequences to cover possible failure modes, defined in the context of a pipeline flow state transition fault model; and (b) deriving loop test kernels to verify steady-state (periodic) behavior of pipeline flow, against analytically predicted signatures. We develop the theory in the context of an example super scalar processor and its timer model.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Evaluation of a New Antidiuretic Agent, Desmopressin Acetate (DDAVP) (1978)

Desmopressin acetate is a synthetic vasopressin analogue administered by the intranasal route. It is long-acting and well tolerated and may be the agent of choice for treating central diabetes insipidus.
Transcriptional Changes in CD8+ T Cells During Antiretroviral Therapy Intensified With Raltegravir (2020)

Background. Intensification of antiretroviral therapy with raltegravir does not affect levels of residual human immunodeficiency virus (HIV)-1 viremia, but it has led to increased levels of episomal HIV-1 DNA in some patients, suggesting antiviral activity against otherwise unresponsive components of the viral reservoir. Effects of raltegravir on host cells remain less well understood.
Air-stable n-type transistors based on assembled aligned carbon nanotube arrays and their application in complementary metal-oxide-semiconductor electronics (2021)

Carbon nanotubes (CNTs) are ideal candidates for beyond-silicon nano-electronics because of their high mobility and low-cost processing. Recently, assembled massively aligned CNTs have emerged as an important platform for semiconductor electronics. However, realizing sophisticated complementary nano-electronics has been challenging due to the p-type nature of carbon nanotubes in air. Fabrication of n-type behavior field effect transistors (FETs) based on assembled aligned CNT arrays is needed for advanced CNT electronics. Here in this paper, we report a scalable process to make n-type behavior FETs based on assembled aligned CNT arrays. Air-stable and high-performance n-type behavior CNT FETs are achieved with high yield by combining the atomic layer deposition dielectric and metal contact engineering. We also systematically studied the contribution of metal contacts and atomic layer deposition passivation in determining the transistor polarity. Based on these experimental results, we report the successful demonstration of complementary metal-oxide-semiconductor inverters with good performance, which paves the way for realizing the promising future of carbon nanotube nano-electronics.
The Formation of Topographic Maps That Maximize the Average Mutual Information of the Output Responses to Noiseless Input Signals (1997)

This article introduces an extremely simple and local learning rule for to pographic map formation. The rule, called the maximum entropy learning rule (MER), maximizes the unconditional entropy of the map's output for any type of input distribution. The aim of this article is to show that MER is a viable strategy for building topographic maps that maximize the average mutual information of the output responses to noiseless input signals when only input noise and noise-added input signals are available.
Highly susceptible SARS-CoV-2 model in CAG promoter–driven hACE2-transgenic mice (2021)

COVID-19, caused by SARS-CoV-2, has spread worldwide with dire consequences. To urgently investigate the pathogenicity of COVID-19 and develop vaccines and therapeutics, animal models that are highly susceptible to SARS-CoV-2 infection are needed. In the present study, we established an animal model highly susceptible to SARS-CoV-2 via the intratracheal tract infection in CAG promoter-driven human angiotensin-converting enzyme 2-transgenic (CAG-hACE2) mice. The CAG-hACE2 mice showed several severe symptoms of SARS-CoV-2 infection, with definitive weight loss and subsequent death. Acute lung injury with elevated cytokine and chemokine levels was observed at an early stage of infection in CAG-hACE2 mice infected with SARS-CoV-2. Analysis of the hACE2 gene in CAG-hACE2 mice revealed that more than 15 copies of hACE2 genes were integrated in tandem into the mouse genome, supporting the high susceptibility to SARS-CoV-2. In the developed model, immunization with viral antigen or injection of plasma from immunized mice prevented body weight loss and lethality due to infection with SARS-CoV-2. These results indicate that a highly susceptible model of SARS-CoV-2 infection in CAG-hACE2 mice via the intratracheal tract is suitable for evaluating vaccines and therapeutic medicines.
Symmetry Point Groups (2005)

Abstract The symmetry of a molecule can be described by its symmetry point group, which is a mathematical group consisting of the symmetry operations of the molecule. This symmetry point group thus consists of the identity plus proper rotations, reflections, an inversion, and/or improper rotations.
Biphasic Effect of Prostaglandin E<sub>2</sub> in a Rat Model of Esophagitis Mediated by EP1 Receptors: Relation to Pepsin Secretion (2005)

We investigated the roles of prostaglandin (PG) E2 and cyclooxygenase (COX) isoenzymes in the mucosal defense of the esophagus, using subtype-selective EP agonists and antagonists as well as various COX inhibitors, in an acute rat esophagitis model. The animals were used after fasting for 18 h. Acid reflux esophagitis was induced by ligating both the pylorus and the transitional region between the forestomach and the glandular portion under ether anesthesia, and the damage was examined 3 or 4 h later. The esophageal lesions were significantly aggravated by prior administration of indomethacin and SC-560 (a selective COX-1 inhibitor) but not rofecoxib (a selective COX-2 inhibitor). PGE2 prevented these lesions at lower doses, yet the protective effect disappeared at a high dose. This biphasic effect was mimicked by 17-phenyl PGE2 (EP1 agonist) and antagonized by ONO-AE-829 (EP1 antagonist), while neither EP2, EP3, nor EP4 agonists had any effect on the esophageal lesions. PGE2 and 17-phenyl PGE2 had no effect on the acid secretion, but significantly increased the pepsin secretion, in a dose-dependent manner. The development of the esophageal lesions was totally prevented by pepstatin, a specific inhibitor of pepsin, and markedly aggravated by exogenous pepsin. We conclude that endogenous PGs derived from COX-1 are involved in the mucosal defense of the esophagus and that PGE2 has a biphasic influence on esophageal injury, depending on the dose: a protective effect at low doses and a deleterious effect at high doses, both mediated by EP1 receptors--the latter effect of PGE2 may be brought about by stimulation of the pepsin secretion.
Chemically Patterned Inverse Opal Created by a Selective Photolysis Modification Process (2015)

Anisotropic photonic crystal materials have long been pursued for their broad applications. A novel method for creating chemically patterned inverse opals is proposed here. The patterning technique is based on selective photolysis of a photolabile polymer together with postmodification on released amine groups. The patterning method allows regioselective modification within an inverse opal structure, taking advantage of selective chemical reaction. Moreover, combined with the unique signal self-reporting feature of the photonic crystal, the fabricated structure is capable of various applications, including gradient photonic bandgap and dynamic chemical patterns. The proposed method provides the ability to extend the structural and chemical complexity of the photonic crystal, as well as its potential applications.
Shear Flow Analysis of Nanosize Particle Flow Behavior Using Kinetic Theory (2005)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Supplementary Figure 2 from Viral RNA Patterns and High Viral Load Reliably Define Oropharynx Carcinomas with Active HPV16 Involvement (2023)

&lt;p&gt;PDF file - 100K, Area under the time-dependent receiver operating characteristic (ROC) curves for overall and progression-free survival over 5 years follow-up. Curves are based on the clinical model (black) together with the viral markers (HPV16 DNA (red), viral load (green), HPV16 E6* RNA (blue), HPV16 CxCa-like RNA patterns (turquois) and HPV marker combination (purple)), with the cellular marker p16INK4a (yellow) or with the combination of p16INK4a and HPV16 DNA (gray). The horizontal line at 0.5 is included for reference corresponding to random guessing.&lt;/p&gt;
Unattached kinetochores rather than intrakinetochore tension arrest mitosis in taxol-treated cells (2016)

Kinetochores attach chromosomes to the spindle microtubules and signal the spindle assembly checkpoint to delay mitotic exit until all chromosomes are attached. Light microscopy approaches aimed to indirectly determine distances between various proteins within the kinetochore (termed Delta) suggest that kinetochores become stretched by spindle forces and compact elastically when the force is suppressed. Low Delta is believed to arrest mitotic progression in taxol-treated cells. However, the structural basis of Delta remains unknown. By integrating same-kinetochore light microscopy and electron microscopy, we demonstrate that the value of Delta is affected by the variability in the shape and size of outer kinetochore domains. The outer kinetochore compacts when spindle forces are maximal during metaphase. When the forces are weakened by taxol treatment, the outer kinetochore expands radially and some kinetochores completely lose microtubule attachment, a condition known to arrest mitotic progression. These observations offer an alternative interpretation of intrakinetochore tension and question whether Delta plays a direct role in the control of mitotic progression.
Comparative analysis of gait in Parkinson's disease, cerebellar ataxia and subcortical arteriosclerotic encephalopathy (1999)

Quantitative gait analysis has been used to elucidate characteristic features of neurological gait disturbances. Although a number of studies compared single patient groups with controls, there are only a few studies comparing gait parameters between patients with different neurological disorders affecting gait. In the present study, gait parameters were compared between control subjects, patients with parkinsonian gait due to idiopathic Parkinson's disease, subjects suffering from cerebellar ataxia and patients with gait disturbance due to subcortical arteriosclerotic encephalopathy. In addition to recording of baseline parameters during preferred walking velocity, subjects were required to vary velocity from very slow to very fast. Values of velocity and stride length from each subject were then used for linear regression analysis. Whereas all patient groups showed slower walking velocity and reduced step length compared with healthy controls when assessed during preferred walking, patients with ataxia and subcortical arteriosclerotic encephalopathy had, in addition, increased variability of amplitude and timing of steps. Regression analysis showed that with changing velocity, subjects with Parkinson's disease changed their stride length in the same proportion as that measured in controls. In contrast, patients with ataxia and subcortical arteriosclerotic encephalopathy had a disproportionate contribution of stride length when velocity was increased. Whereas the findings in patients with Parkinson's disease can be explained as a reduction of force gain, the observations for patients with ataxia and subcortical arteriosclerotic encephalopathy reflect an altered spatiotemporal gait strategy in order to compensate for instability. The similarity of gait disturbance in subcortical arteriosclerotic encephalopathy and cerebellar ataxia suggests common mechanisms.
3D Models from Extended Uncalibrated Video Sequences: Addressing Key-Frame Selection and Projective Drift (2005)

In this paper, we present an approach that is able to reconstruct 3D models from extended video sequences captured with an uncalibrated hand-held camera. We focus on two specific issues: (1) key-frame selection; and (2) projective drift. Given a long video sequence it is often not practical to work with all video frames. In addition, to allow for effective outlier rejection and motion estimation it is necessary to have a sufficient baseline between frames. For this purpose, we propose a key-frame selection procedure based on a robust model selection criterion. Our approach guarantees that the camera motion can be estimated reliably by analyzing the feature correspondences between three consecutive views. Another problem for long uncalibrated video sequences is projective drift. Error accumulation leads to a non-projective distortion of the model. This causes the projective basis at the beginning and the end of the sequence to become inconsistent and leads to the failure of self-calibration. We propose a self-calibration approach that is insensitive to this global projective drift. After self-calibration triplets of key-frames are aligned using absolute orientation and hierarchically merged into a complete metric reconstruction. Next, we compute a detailed 3D surface model using stereo matching. The 3D model is textured using some of the frames.
Correlations between the Changes of Pain and Temperature by Infrared Thermography in Central Poststroke Pain (2006)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Vapour phase oxidation of selenium (1971)

The vapour phase oxidation of se to SeO2 which is an intermediate step in the production of high-purity se was studied in a flow reactor as a function of O2/Se mole ratio, and temperature. Sodium dichromate on alumina and activated alumina were used as reactor packings with high-purity and crude selenium. Experiments were carried out using either a total or partial oxidation of the selenium. The conversion of selenium increased with the O2/Se mole ratio over the range 1.0 to 4.0 and with temperature in the range 450° to 650°C. The reaction kinetics were approximated by a second-order irreversible rate equation which is first-order with respect to oxygen and selenium. For pure selenium, the sodium dichromate on alumina was the best packing. The use of crude selenium feed containing tellurium resulted in lower rates due to rapid fouling of the packing. Reaction rates for this case varied with the available surface area of the packing. The rate constants obtained can be used to optimize the design of an industrial oxidizer unit. Résumé L'oxydation du sélénium, en phase vapeur, en bioxyde de sélénium, étape intermédiaire pour la production de sélénium de haute pureté, a été étudiée dans un réacteur en fonction du rapport mohiire O2/Se et de la température. Le tube réacteur etait rempli de bichromate de sodium sur de l'alumine et de l'alumine activée, avec du sélénium de haute pureté ou brut. Les expériences furent conduites en utilisant une oxydation du sélénium soit complète, soit incomplète. L'oxydation du sélénium augmentait avec le rapport O2/Se dans l'intervalle de 1.0 à 4.0 et pour des températures variant de 450° à 650°C. La cinétique de réaction est donnée approximativement par une équation du deuxième ordre, pour un taux irréversible, cette équation est du premier ordre par rapport à l'oxygène et au sélénium. Le bichromate de sodium sur de l'alumine etait le meilleur agent, dans le tube, pour le sélénium pur. Pour le sélénium brut contenant du tellurium les taux de conversion étaient plus faibles à cause d'un tassement dans le tube; les taux de réaction variaient alors avec la surface totale dans le tube. Les constantes obtenues peuvent servir ' optimaliser la conception d'une unité industrielle d'oxydation du sélénium.
HLA correlates in a cohort of slow progressors from China (2013)

We looked at our HIV + slow progressors cohort to determine if there were any human leukocyte antigen (HLA) correlates for protection. No statistically significant allelic differences were found between the HIV + and control cohorts using regression analysis, though trends were noted. Data for Elite Controllers showed an increased frequency of B*57. Likewise, no correlation was inferred with the clinical data of the HIV + cohort. We hypothesize that the protective effect of HLA alleles may have been lost over time.
Synthesizing styled speech using the Klatt synthesizer (2002)

This paper reports the implementation of high-quality synthesis of speech with varying speaking styles using the Klatt (1980) synthesizer. This research is based on previously-reported research that determined that the glottal waveforms of various styles of speech are significantly and identifiably different. Given the parameter tracks that control the synthesis of a normal version of an utterance, those parameters that control known acoustic correlates of speaking style are varied appropriately, relative to normal, to synthesize styled speech. In addition to varying the parameters that control the glottal waveshape, phoneme duration, phoneme intensity, and pitch contour are also varied appropriately. Listening tests that demonstrate that the synthetic speech is perceptibly and appropriately styled, and that the synthetic speech is natural-sounding, were performed, and the results are presented.
Influence of a new anti-inflammatory agent, pranoprofen, on gastro-intestinal organ in mice (1982)

The effect of pranoprofen (PPF), indomethacin (IM) and acetylsalicylic acid (ASA) on acute and chronic inflammation, inflammatory pain and gastro-intestinal organ in mice was investigated. The inhibitory effect of PPF on carrageenin- or concanavalin A-induced paw edema, phenylquinone writhing and cotton pellet granuloma formation was as potent as that of IM and more active than that of ASA. In contrast, PPF was about 15 times less active than IM in the production of gastric ulcers in mice. Furthermore, PPF was less active than IM in the inhibition of stomach prostaglandins synthesis and arachidonic acid-induced diarrhea in mice. These results suggest that the less potent activity in inhibiting the gastro-intestinal prostaglandins synthesis of PPF with the potent anti-inflammatory activity contributes to its weak ulcerative effect in mice.
Behavioural and physiological responses to physical pre-slaughter stress in three chicken genotypes. (2004)

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