gebhart/patrepeval huggingface dataset:
Performance of anti-islanding of an improved reactive power variation method based on positive feedfback (2017)

In this paper, reactive power variation based on positive feedback is proposed for improving islanding detection in the distributed generation. The proposed reactive power variation method consists of two parts, where the first part has a fundamental amplitude as +5%P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">inv</sub> or -5%P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">inv</sub> , and the second part has a positive feedback using a frequency deviation. Polarity and amplitude of RPV method are determined by a deviation between the measured frequency at PCC and the rated frequency. For grid-connected operation, the amplitude corresponding to the positive feedback can be ignored since there is almost no frequency deviation. Therefore, an only +5%P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">inv</sub> or -5%P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">inv</sub> is supplied to loads, and either positive or negative value may be switched by the measured frequency. Power factor is close to unity power factor as 0.9975. In islanding condition, the positive feedback affects changes of PCC frequency by increasing the absolute amplitude of RPV. Therefore, it makes PCC frequency deviate outside maximum or minimum threshold value rapidly. The direction of PCC frequency toward either maximum or minimum threshold value is determined in accordance with the polarity of the reactive power injected at the time of occurrence of islanding. Feasibility of the proposed RPV method is verified through experiments, where the detection times of islanding take 53ms in over-threshold value as 60.5Hz and 150ms in under-threshold value as 57Hz, respectively.
Cutting Edge: Developmental Stage-Specific Recruitment of Cohesin to CTCF Sites throughout Immunoglobulin Loci during B Lymphocyte Development (2009)

Contraction of the large Igh and Igkappa loci brings all V genes, spanning >2.5 Mb in each locus, in proximity to DJ(H) or J(kappa) genes. CCCTC-binding factor (CTCF) is a transcription factor that regulates gene expression by long-range chromosomal looping. We therefore hypothesized that CTCF may be crucial for the contraction of the Ig loci, but no CTCF sites have been described in any V loci. Using ChIP-chip, we demonstrated many CTCF sites in the V(H) and V(kappa) regions. However, CTCF enrichment in the Igh locus, but not the Igkappa locus, was largely unchanged throughout differentiation, suggesting that CTCF binding alone cannot be responsible for stage-specific looping. Because cohesin can colocalize with CTCF, we performed chromatin immunoprecipitation for the cohesin subunit Rad21 and found lineage and stage-specific Rad21 recruitment to CTCF in all Ig loci. The differential binding of cohesin to CTCF sites may promote multiple loop formation and thus effective V(D)J recombination.
Functionalized Mesoporous Silica Films as a Matrix for Anchoring Electrochemically Active Guests (2005)

Mesoporous silica thin films were shown to be an appropriate matrix for immobilization of discrete electroactive moieties, yielding uniform transparent thin film electrodes with defined texture and enhanced electrochemical activity. The mesoporous silica films prepared on conducting FTO-coated glass substrate were postsynthetically functionalized. Alkoxysilanes were used as precursors for subsequent grafting via ionic or covalent bonds of representative electroactive species, such as polyoxometalate PMo12O(40)3-, hexacyanoferrate(III), and ferrocene. The electrochemically active concentration within the silica-based composite electrodes achieves 90, 260, and 60 micromol cm(-3) for polyoxometalate, hexacyanoferrate(III), and ferrocene, respectively. The amount of molecules involved in the charge-transfer sequence is proportional to the film thickness and comparable to the total amount of embedded guests. Thus, eventually the whole bulk volume of the modified silica films is electrochemically accessible. Immobilization in the chemically modified silica matrix alters the redox potential of the electroactive molecules. Electron exchange between the adjacent redox centers (electron hopping) is proposed as a possible charge propagation pathway through the insulating silica matrix, which is supported by the fact that the high charge uptake is observed also for the hybrid electrodes with the covalently anchored redox guests.
Pivotal Study of Leadless Tibial Nerve Stimulation with eCoin® for Urgency Urinary Incontinence: An Open-Label, Single Arm Trial (2021)

eCoin demonstrated clinical benefit for treating overactive bladder syndrome with automatic delivery of an intermittent low-duty cycle and implanted with a minimally invasive, brief procedure.
A novel analysis method of threshold voltage shift due to detrap in a multi-level flash memory (2002)

With the aim of improving flash-memory retention characteristics, we investigated threshold voltage shift (/spl Delta/V/sub th/) due to charge detrapping from the tunnel oxide. Accordingly, we propose a new parameter that can reveal the main origin of detrapping (hole/electron) and the detrap centroid. We found that the main origin of detrapping changes from holes to electrons depending on the degree of tunnel-oxide degradation. Since the hole detrapping increases V/sub th/ of a programmed memory cell, this V/sub th/ increase must be considered, especially when designing a multi-level flash memory.
Biosurfactants in cosmetics and biopharmaceuticals (2015)

Biosurfactants are surface-active biomolecules that are produced by various micro-organisms. They show unique properties i.e. lower toxicity, higher biodegradability and environmental compatibility compared to their chemical counterparts. Glycolipids and lipopeptides have prompted application in biotechnology and cosmetics due to their multi-functional profile i.e. detergency, emulsifying, foaming and skin hydrating properties. Additionally, some of them can be served as antimicrobials. In this study the current status of research and development on rhamnolipids, sophorolipids, mannosyloerythritol lipids, trehalipids, xylolipids and lipopeptides particularly their commercial application in cosmetics and biopharmaceuticals, is described.
Solid Ionic Conductors: Principles and Applications (1978)

Abstract Solid ionic conductors, also called solid electrolytes, transport electric current by means of ions. The best known examples of these usually crystalline compounds include doped ZrO 2 , as well as AgI, β‐Al 2 O 3 , and CaF 2 . Ionic conduction in solid electrolytes reaches its maximum value if a partial lattice of a solid compound undergoes transition at elevated temperature to a quasimolten state. The ionic conductivity in such solid compounds is then as high as in molten salts. Solid electrolytes have found many scientific and technological applications; thus, they can be used to study thermodynamic and kinetic problems, and to build fuel cells, batteries, sensors, and chemotronic components.
Plantar fasciitis: MR imaging. (1991)

The clinical presentation of plantar fasciitis may be mimicked by a number of other painful heel conditions. Thus, magnetic resonance (MR) imaging was used to develop objective morphologic criteria to establish a diagnosis of plantar fasciitis in eight patients. Sagittal T1-weighted and coronal intermediate and T2-weighted images of symptomatic and asymptomatic feet were obtained; additional sequences were used for symptomatic feet. Maximum thickness of the plantar fascia was significantly increased (P less than .0001) in patients with plantar fasciitis (sagittal, 7.40 mm +/- 1.17, and coronal, 7.56 mm +/- 1.01) compared with age- and sex-matched volunteers (sagittal, 3.22 mm +/- 0.44, and coronal, 3.44 mm +/- 0.53) and young male controls (sagittal, 3.00 mm +/- 0.8, and coronal, 3.00 mm +/- 0.0). Furthermore, nine of 10 feet with plantar fasciitis had areas of moderately increased signal intensity in the substance of the fascia. MR imaging may provide an objective assessment of the morphologic changes associated with plantar fasciitis, as well as assist in excluding other causes of heel pain.
185. Reactions of αβ-unsaturated cyclic aldehydes and ketones. Part XI. (±)-cis- and (±)-trans-Piperitol (1953)

A. K. Macbeth, B. Milligan and J. S. Shannon, J. Chem. Soc., 1953, 901 DOI: 10.1039/JR9530000901
A simultaneously diffused, textured, in situ oxide AR-coated solar cell process (STAR process) for high-efficiency silicon solar cells (1998)

A novel device fabrication process called the STAR process is presented, which incorporates a Simultaneously diffused emitter and Back Surface Field (BSF), on a textured silicon wafer, with an in situ thermal oxide for surface passivation and Anti-Reflection (AR) coating. In a single high-temperature step, the STAR process provides four important quality-enhancement features: (1) emitter oxide passivation, (2) back surface passivation via a boron back surface field, (3) a low reflectance (SiO/sub 2/) single layer AR coating, and (4) a back surface reflector (BSR) for light trapping. The STAR process is implemented using a novel diffusion technique which can simultaneously form boron and phosphorus diffusions and grow an in situ thermal oxide in a conventional diffusion furnace, without the deleterious effects of cross doping. Conversion efficiencies as high as 20.1% have been obtained for this structure on 2.0 /spl Omega//spl middot/cm float zone silicon. This paper presents a detailed characterization of the impact of each of the above quality enhancement features, using a combination of an extended IQE analysis, minority carrier lifetime measurements, and measurements of the emitter saturation current density J/sub oe/. Computer simulations are used to improve the understanding of STAR cells and show that the STAR process is capable of producing device efficiencies over 19% on thin, relatively modest quality, solar grade silicon materials.
A Plastic Fracture Mechanics Prediction of Fracture Instability in a Circumferentially Cracked Pipe in Bending—Part I: J-Integral Analysis (1981)

A method of evaluating the J-integral for a circumferentially cracked pipe in bending is proposed. The method allows a J-resistance curve to be evaluated directly from the load-displacement record obtained in a pipe fracture experiment. This method also permits an analysis for fracture instability in a circumferential crack growth using a J-resistance curve and the tearing modulus parameter. The influence of the system compliance on fracture instability is discussed in conjunction with the latter application. The results suggest that a compliant piping system containing a crack can exhibit ductile fracture instability after some stable crack growth. The importance of using a J-resistance curve that is consistent with the type of constraint for a given application is emphasized.
Basal cell carcinoma: biology, morphology and clinical implications (2006)

Basal cell carcinoma (BCC) is the most common malignant neoplasm of humans. Rising dramatically in incidence in North America, as likely reflects changing habits of the population and a move from more northerly climes to the sunbelt of the Southern and Southwestern United States, the incidence is surely to rise even higher in the future. The last decade has seen significant advances in our understanding of BCC biology and novel approaches to therapy, which hinge upon accurate diagnosis and subclassification by pathologists. The purpose of this review article is to summate the research advances in our understanding of BCC biology and to acquaint pathologists and clinicians to the practical issues in BCC diagnosis and subclassification which flow there from.
Occult Anterograde Flow Is an Under-Recognized but Crucial Predictor of Early Recanalization With Intravenous Tissue-Type Plasminogen Activator (2015)

Occult anterograde flow through thrombus can be assessed by perfusion computed tomography T0 maps and predicts early recanalization with intravenous tissue-type plasminogen activator robustly.
Sensitivity and scattering in an integrated heterodyned laser biochemical sensor (2003)

We demonstrate a novel biochemical sensor based on monolithically integrated heterodyned sampled-grating DBR lasers. An untraditional waveguide design will allow detection of single 100 nm diameter macromolecules.
The OS/VS2 Release 2 System Resources Manager (1974)

One of the os/vs2 Release 2 design objectives is to provide each installation with control over the responsiveness and turnaround times of its batch jobs and TSO commands, without requiring installation personnel to write their own scheduling algorithm. Installation personnel specify their response and turnaround objectives in terms of the rates at which processing resources are to be provided to individual jobs and commands. The system resources manager uses swapping to dynamically adjust the execution mix in order to achieve two distinct, but potentially conflicting, performance objectives. The first objective is service — to distribute processing resources among the batch jobs and TSO commands, according to installation specifications. The second performance objective is throughput - to optimize the use of CPU main storage and I/O resources, given the service objectives.
[Detection of pulmonary tuberculosis among the adolescent population at the stage of primary health care]. (2008)

A retrospective look was made on the estimation of the diagnostic value of preclinical and clinical methods for verification of pulmonary tuberculosis. Among 170 examinees, 65.5% were self-directed, 24.7% diagnosed by fluorography and 8.8% by tuberculin skin testing in account with clinical signs, forms of tuberculosis, bacteriological results and peculiarities of tuberculin sensitivity. The findings show the poor result of timely diagnosis of tuberculosis by the use of prophylactic examination of teenagers by fluorography and tuberculin skin testing.
Voice source rules for text-to-speech synthesis (2003)

Voice source parameters are generally derived from time-domain inverse filtering. An effective system of parameterization is the LF model, which has been adopted for the authors' studies of voice source variations in connected speech. The effects of variations of the different LF parameters on the voice source spectrum are demonstrated. Dynamic variations within a linguistic frame and with respect to different speaker types are exemplified. The LF-model has been implemented in a text-to-speech system, and work on development of rules is progressing.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Research on compact discovery reference signal for future synchronized network (2014)

Dynamic on/off switching is a key Rel-12 feature of small cell enhancements for energy saving. When in “offmode”, the small cell needs to transmit a Discovery Reference Signal (Discovery-RS) periodically to notify its existence. In legacy sense, Discovery-RS consists of multiple signals, and Primary Synchronization Signal (PSS) could be involved to establish coarse time synchronization for User Equipment (UE). However in the future synchronized network, the legacy coarse time synchronization procedure for UE through PSS may be no longer needed, then we can propose a compact Discovery-RS structure that consists of only one signal to significantly reduce system overhead of radio-interface resource, as well as the interference between cells. A thoroughly preceding research and algorithm demonstration were then presented to analyze the feasibility of this approach. Theoretical analysis and computer simulation results show that this approach is practicable in the future synchronized network.
Improvement of Porphyrin Photovoltaic Cells in Panchromaticities and Quantum Yields by Use of Tetrabenzoporphyrin Skeleton (1987)

Abstract Expansion of the porphyrin π electron system by using a tetrabenzoporphyrin (TBP) skeleton leads to better spectral match to the solar spectrum and high quantum yields when the porphyrins are used as sensitizers. Metallotetrabenzoporphyrins such as MgTBP and ZnTBP rank among the most efficient organic photoconducting materials studied so far.
Functional imaging of interleukin 1 beta expression in inflammatory process using bioluminescence imaging in transgenic mice (2008)

Abstract Background Interleukin 1 beta (IL-1β) plays an important role in a number of chronic and acute inflammatory diseases. To understand the role of IL-1β in disease processes and develop an in vivo screening system for anti-inflammatory drugs, a transgenic mouse line was generated which incorporated the transgene firefly luciferase gene driven by a 4.5-kb fragment of the human IL-1β gene promoter. Luciferase gene expression was monitored in live mice under anesthesia using bioluminescence imaging in a number of inflammatory disease models. Results In a LPS-induced sepsis model, dramatic increase in luciferase activity was observed in the mice. This transgene induction was time dependent and correlated with an increase of endogenous IL-1β mRNA and pro-IL-1β protein levels in the mice. In a zymosan-induced arthritis model and an oxazolone-induced skin hypersensitivity reaction model, luciferase expression was locally induced in the zymosan injected knee joint and in the ear with oxazolone application, respectively. Dexamethasone suppressed the expression of luciferase gene both in the acute sepsis model and in the acute arthritis model. Conclusion Our data suggest that the transgenic mice model could be used to study transcriptional regulation of the IL-1β gene expression in the inflammatory process and evaluation the effect of anti-inflammatory drug in vivo .
Legal professional privilege in children act cases (2002)

Adult survivors of childhood Wilms tumor and neuroblastoma do not differ from population norms on most health-related quality of life (HRQL) measures. These data, however, indicate that the emotional well being of adult survivors may be compromised. Health care providers should be aware of the risk of adverse outcomes in emotional health even many years after treatment and cure.
Dual Enzyme-like Activities of Iron Oxide Nanoparticles and Their Implication for Diminishing Cytotoxicity (2012)

Iron oxide nanoparticles (IONPs) are frequently used in biomedical applications, yet their toxic potential is still a major concern. While most studies of biosafety focus on cellular responses after exposure to nanomaterials, little is reported to analyze reactions on the surface of nanoparticles as a source of cytotoxicity. Here we report that different intracellular microenvironment in which IONPs are located leads to contradictive outcomes in their abilities to produce free radicals. We first verified pH-dependent peroxidase-like and catalase-like activities of IONPs and investigated how they interact with hydrogen peroxide (H(2)O(2)) within cells. Results showed that IONPs had a concentration-dependent cytotoxicity on human glioma U251 cells, and they could enhance H(2)O(2)-induced cell damage dramatically. By conducting electron spin resonance spectroscopy experiments, we showed that both Fe(3)O(4) and γ-Fe(2)O(3) nanoparticles could catalyze H(2)O(2) to produce hydroxyl radicals in acidic lysosome mimic conditions, with relative potency Fe(3)O(4) > γ-Fe(2)O(3), which was consistent with their peroxidase-like activities. However, no hydroxyl radicals were observed in neutral cytosol mimic conditions with both nanoparticles. Instead, they decomposed H(2)O(2) into H(2)O and O(2) directly in this condition through catalase-like activities. Transmission electron micrographs revealed that IONPs located in lysosomes in cells, the acidic environment of which may contribute to hydroxyl radical production. This is the first study regarding cytotoxicity based on their enzyme-like activities. Since H(2)O(2) is continuously produced in cells, our data indicate that lysosome-escaped strategy for IONP delivery would be an efficient way to diminish long-term toxic potential.
EDITORIALS (1935)

ADVERTISEMENT RETURN TO ISSUEArticleNEXTEDITORIALSHarrison E. HoweCite this: Ind. Eng. Chem. 1935, 27, 9, 981–982Publication Date (Print):September 1, 1935Publication History Published online1 May 2002Published inissue 1 September 1935https://pubs.acs.org/doi/10.1021/ie50309a001https://doi.org/10.1021/ie50309a001research-articleACS PublicationsRequest reuse permissionsArticle Views15Altmetric-Citations-LEARN 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 options Get e-Alerts