gebhart/patrepeval huggingface dataset:
The Influence of Iron on Pseudomonas aeruginosa Physiology (2008)

In iron-replete environments, the Pseudomonas aeruginosa Fur (ferric uptake regulator) protein represses expression of two small regulatory RNAs encoded by prrF1 and prrF2. Here we describe the effects of iron and PrrF regulation on P. aeruginosa physiology. We show that PrrF represses genes encoding enzymes for the degradation of anthranilate (i.e. antABC), a precursor of the Pseudomonas quinolone signal (PQS). Under iron-limiting conditions, PQS production was greatly decreased in a DeltaprrF1,2 mutant as compared with wild type. The addition of anthranilate to the growth medium restored PQS production to the DeltaprrF1,2 mutant, indicating that its defect in PQS production is a consequence of anthranilate degradation. PA2511 was shown to encode an anthranilate-dependent activator of the ant genes and was subsequently renamed antR. AntR was not required for regulation of antA by PrrF but was required for optimal iron activation of antA. Furthermore, iron was capable of activating both antA and antR in a DeltaprrF1,2 mutant, indicating the presence of two distinct yet overlapping pathways for iron activation of antA (AntR-dependent and PrrF-dependent). Additionally, several quorum-sensing regulators, including PqsR, influenced antA expression, demonstrating that regulation of anthranilate metabolism is intimately woven into the quorum-sensing network of P. aeruginosa. Overall, our data illustrate the extensive control that both iron regulation and quorum sensing exercise in basic cellular physiology, underlining how intermediary metabolism can affect the regulation of virulence factors in P. aeruginosa.
Reducing emissions of carbon dioxide and hydrogen sulphide at Hellisheidi power plant in 2014-2017 and the role of CarbFix in achieving the 2040 Iceland climate goals (2018)

The CarbFix gas injection method was developed to mitigate the gas emissions associated with geothermal utilization at Hellisheidi power plant. Pilot injections started in 2012 and the first industrial scale injection took place in 2014. The process was scaled up in 2016, and again in 2017. In 2017 about 10,000 tonnes of CO2 and 5,000 tonnes of H2S were injected back into the geothermal reservoir, corresponding to 34% and 68% of the annual emissions from the plant. The gases react with basaltic subsurface rocks to form stable minerals for safe, long-term storage of the injected gases.
Vehicle Stability Control with Regenerative Braking and Electronic Brake Force Distribution for a Four-Wheel Drive Hybrid Electric Vehicle (2006)

Vehicle stability control for a four-wheel drive (4WD) hybrid electric vehicle is investigated using the regenerative braking of the rear motor and electrohydraulic brake (EHB). A fuzzy-rule-based control algorithm is proposed, which generates the direct yaw moment to compensate for the errors of the sideslip angle and yaw rate. Performance of the stability control logic is evaluated for J-turn and single-lane change. It is found from the simulation results that the regenerative braking of the rear motor is able to provide improved stability compared with the vehicle performance without any control. It is found that better performance can be achieved by applying the regenerative braking plus the EHB control. In addition, the optimal distribution ratio of the EHB force is presented to minimize the EHB power consumption. The simulation results show that the required torque level by the optimal EHB distribution ratio control is much lower than that of the fixed distribution ratio, while providing almost the same control performance. It is expected that the vehicle stability control algorithm suggested in this study is able to offer improved vehicle stability.
Lean Flammability Limit and Minimum Spark Ignition Energy. Commercial Fluids and Pure Hydrocarbons. (1951)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLean Flammability Limit and Minimum Spark Ignition Energy. Commercial Fluids and Pure Hydrocarbons.John B. FennCite this: Ind. Eng. Chem. 1951, 43, 12, 2865–2869Publication Date (Print):December 1, 1951Publication History Published online1 May 2002Published inissue 1 December 1951https://pubs.acs.org/doi/10.1021/ie50504a057https://doi.org/10.1021/ie50504a057research-articleACS PublicationsRequest reuse permissionsArticle Views594Altmetric-Citations45LEARN 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
Topwood component of truckloads of tree-length pine stems in east Texas. (1992)

The expected weight of the topwood component of truckloads of tree-length southern pine stems can be calculated using observed total weight of stems, observed total number of stems, and predicted weight of the sawlog proportion of the stems. By subtracting the predicted weight of the sawlog portion of the stems from the observed weight of the total stems, the expected weight of the topwood component of the stems can be obtained.
α1-Adrenergic Receptor Subtypes in Nonfailing and Failing Human Myocardium (2009)

Our data show for the first time that the alpha1A and alpha1B subtypes are both present in human myocardium, but alpha1D binding is not, and the alpha1 subtypes are not downregulated in heart failure. Because alpha1 subtypes in the human heart are similar to those in the mouse, where adaptive and protective effects of alpha1 subtypes are most convincing, it might become feasible to treat heart failure with a drug targeting the alpha1A and/or alpha1B.
Aventura e percepção: contribuições para o processo de ensino-aprendizagem (2006)

"Este estudo objetivou encaminhar reflexões para o processo de ensino-aprendizagem em Educação Física utilizando o referencial teórico da Fenomenologia da Percepção. O texto foi elaborado a partir de alguns resultados de uma pesquisa qualitativa, de caráter exploratório, cujo objetivo era conhecer a analisar os elementos teóricopráticos envolvidos em atividades físicas de aventura na natureza (AFAN). O universo de pesquisa constituiu-se de praticantes de atividades físicas de aventura na natureza na Ilha de Santa Catarina. As reflexões foram elaboradas a partir de relatos de praticantes destas atividades, obtidos mediante entrevista. Apresenta-se uma relação entre a experiência do conhecimento, corpo e movimento, enfatizando aspectos sobre a liberdade, associados à idéia de técnica e arte. Os resultados das análises sustentam as seguintes propostas: recuperar o espaço da experiência como primordial na constituição do conhecimento e reconhecer o potencial criador como elemento fundamental na aprendizagem. A conclusão destaca o potencial da Educação Física escolar em construir experiências que revelem o poder expressivo do corpo próprio."
Growth of precultured human glioma biopsy specimens in nude rat brain (1999)

Object. The aim of this study was to develop an improved animal model for brain tumor study. The need for better and more relevant brain tumor models is generally acknowledged. Glioma tissue can be cultured directly from the biopsy specimen as tumor spheroids. Using such precultured tissue, a new in vivo model for studying human gliomas was established. Methods. Precultured small tumor spheroids (< 300 µm) prepared from cell lines or tumor biopsy fragments were injected into the brains of immunodeficient rats by using a 5-µl Hamilton syringe that had a piston in the needle. Tumors could be established by injecting a single spheroid derived from the U-87MG cell line, whereas inoculation of 10 spheroids resulted in a tumor take comparable to that attained with injection of 10 6 single cells. Biopsy specimens obtained from six patients who underwent surgery for glioblastoma multiforme were cultured as organotypic spheroids for 11 to 18 days before inoculation into the rats. The animals were killed 3 months after spheroid implantation. Microscopic examination revealed tumor growth in 87.5 to 100% of the animals inoculated with tumor spheroids from all but one of the tumor biopsy specimens. Extensive invasion and cell migration along the nerve tracts of the corpus callosum was found in tumors that originated from four of the six biopsy specimens. Conclusions. This approach, in which spheroids from precultured biopsy specimens are injected into the brains of immunodeficient animals, provides new means for experimental studies of human malignant brain tumors in a clinically relevant animal model.
Unfolding of Massive Laundry and Classification Types by Dual Manipulator (2007)

With a progress of an aging society with fewer children, an introduction of robots for family use is expected. Focusing on laundry cleanup by robots, we are studying clothing classification for folding by a dual manipulator. Fabrics vary greatly in handling, making it difficult for robots to recognize and handle them easily. We propose determining clothing form and classifying types by alternately regrasping clothing and expanding them using a dual manipulator. Because clothing is classified and unfolded simultaneously, folding after this is easy. We confirmed the feasibility of our proposal in classifications using a real machine and eight types of laundry.
Management of Stroke in Infants and Children (2008)

Evidence-based recommendations are provided for the prevention of ischemic stroke caused by sickle cell disease, moyamoya disease, cervicocephalic arterial dissection, and cardiogenic embolism. Recommendations on the evaluation and management of hemorrhagic stroke also are provided. Protocols for dosing of heparin and warfarin in children are suggested. Also included are recommendations on the evaluation and management of perinatal stroke and cerebral sinovenous thrombosis in children.
Perioperative visual loss after spine surgery (2014)

Perioperative visual loss (POVL) is an uncommon, but devastating complication that remains primarily associated with spine and cardiac surgery. The incidence and mechanisms of visual loss after surgery remain difficult to determine. According to the American Society of Anesthesiologists Postoperative Visual Loss Registry, the most common causes of POVL in spine procedures are the two different forms of ischemic optic neuropathy: anterior ischemic optic neuropathy and posterior ischemic optic neuropathy, accounting for 89% of the cases. Retinal ischemia, cortical blindness, and posterior reversible encephalopathy are also observed, but in a small minority of cases. A recent multicenter case control study has identified risk factors associated with ischemic optic neuropathy for patients undergoing prone spinal fusion surgery. These include obesity, male sex, Wilson frame use, longer anesthetic duration, greater estimated blood loss, and decreased percent colloid administration. These risk factors are thought to contribute to the elevation of venous pressure and interstitial edema, resulting in damage to the optic nerve by compression of the vessels that feed the optic nerve, venous infarction or direct mechanical compression. This review will expand on these findings as well as the recently updated American Society of Anesthesiologists practice advisory on POVL. There are no effective treatment options for POVL and the diagnosis is often irreversible, so efforts must focus on prevention and risk factor modification. The role of crystalloids versus colloids and the use of α-2 agonists to decrease intraocular pressure during prone spine surgery will also be discussed as a potential preventative strategy.
Which verifiers work?: A benchmark evaluation of touch-based authentication algorithms (2013)

Despite the tremendous need for the evaluation of touch-based authentication as an extra security layer for mobile devices, the huge disparity in the experimental methodology used by different researchers makes it hard to determine how much research in this area has progressed. Critical variables such as the types of features and how they are pre-processed, the training and testing methodology and the performance evaluation metrics, to mention but a few, vary from one study to the next. Additionally, most datasets used for these evaluations are not openly accessible, making it impossible for researchers to carry out comparative analysis on the same data. This paper takes the first steps towards bridging this gap. We evaluate the performance of ten state-of-the-art touch-based authentication classification algorithms under a common experimental protocol, and present the associated benchmark dataset for the community to use. Using a series of statistical tests, we rigorously compare the performance of the algorithms, and also evaluate how the “failure to enroll” phenomena would impact overall system performance if users exceeding certain EERs were barred from using the system. Our results and benchmark dataset open the door to future research that will enable the community to better understand the potential of touch gestures as a biometric authentication modality.
Polymorphisms in HLA Class I Genes Associated with both Favorable Prognosis of Human Immunodeficiency Virus (HIV) Type 1 Infection and Positive Cytotoxic T-Lymphocyte Responses to ALVAC-HIV Recombinant Canarypox Vaccines (2001)

Carriers of certain human leukocyte antigen class I alleles show favorable prognosis of human immunodeficiency virus type 1 (HIV-1) infection, presumably due to effective CD8(+) cytotoxic T-lymphocyte responses, but close relationships between class I variants mediating such responses to natural and to vaccine HIV-1 antigen have not been established. During 6 to 30 months of administration and follow-up in trials of ALVAC-HIV recombinant canarypox vaccines, cells from 42% of 291 HIV-1-negative vaccinated subjects typed at class I loci responded to an HIV-1 protein in a lytic bulk CD8(+) cytotoxic T-lymphocyte assay. By 2 weeks after the second dose, higher proportions of vaccinees carrying one of two alleles consistently associated with slower progression of natural HIV-1 infection reacted at least once: B*27 carriers reacted to Gag (64%; odds ratio [OR] = 10.3, P = 0.001) and Env (36%; OR = 4.6, P = 0.04), and B*57 carriers reacted to Env (44%; OR = 6.6, P < 0.05). By 2 weeks after the third or fourth dose, B*27 carriers had responded (two or more reactions) to Gag (33%; OR = 4.4, P < 0.05) and B*57 carriers had responded to both Gag (39%; OR = 5.3, P = 0.013) and Env (39%; OR = 9.5, P = 0.002). Homozygosity at class I loci, although conferring an unfavorable prognosis following natural infection, showed no such disadvantage for vaccine response. Individual class I alleles have not previously demonstrated such clear and consistent relationship with both the clinical course of an infection and cellular immunity to a vaccine against the infectious agent. This proof of principle that class I an alleles modulate both processes has implications for development of HIV-1 and presumably other vaccines.
Development Of Road Maintenance Management System Based On Webgis (2012)

Based on an analysis of the current research and application of Road maintenance, geographic information system (WebGIS) and ArcGIS Server, the platform overhead construction for Road maintenance development is studied and the key issues are presented, including the organization and design of spatial data on the basis of the geodatabase technology, middleware technology, tiles cache index technology and dynamic segmentation of WebGIS. Road maintenance geographic information platform is put forward through the researching ideas of analysis of the system design. The design and application of WebGIS system are discussed on the basis of a case study of BaNan district of Chongqing highway maintenance management .The feasibility of the theories and methods are validated through the system.
The Hamiltonian particle‐mesh method for the spherical shallow water equations (2004)

Abstract The Hamiltonian particle‐mesh (HPM) method is generalized to the spherical shallow‐water equations, utilizing constrained particle dynamics on the sphere and Merilees pseudospectral method (complexity 𝒪 ( J 2 log J ) in the latitudinal gridsize) to approximate the inverse modified Helmholtz regularization operator. The time step for the explicit, symplectic integrator depends only on a uniform physical smoothing length. Copyright © 2004 Royal Meteorological Society
The Absorption of Laser Light by Rough Metal Surfaces (2008)

In Laser Material Processing of metals, an understanding of the fundamental absorption mechanisms plays a vital role in determining the optimum processing parameters and conditions. The absorptance, which is the fraction of the incident laser light which is absorbed, depends on a number of different parameters. These include laser parameters such as intensity, wavelength, polarisation and angle of incidence and material properties such as composition, temperature, surface roughness, oxide layers and contamination. The vast theoretical and experimental knowledge of the absorptance of pure elements with smooth, contamination-free surfaces contrasts with the relatively sparse information on the engineering materials found in real processing applications. In this thesis a thorough investigation of the absorption mechanisms in engineering grade materials has been conducted, both experimentally and theoretically. Integrating sphere reflectometry has been employed to study the impact of surface conditions on Nd:YAG and Nd:YLF laser absorptance of some of the most common ferrous and non-ferrous metallic alloys found in Laser Material Processing. Mathematical modelling and simulations using ray-tracing methods from scattering theory have been used to analyze the influence of surface topography on light absorption. The Doctoral thesis consists of six papers: Paper 1 is a short review of some of the most important mathematical models used in describing the interaction between laser light and a metal surface. Paper 2 is a review of experimental methods available for measuring the absorptance of an opaque solid such as a metal. Papers 3 and 4 are experimental investigations of the absorptance of some of the most frequently found metallic alloys used in Laser Material Processing today. Paper 5 presents results from 2D ray-tracing simulations of random rough metal surfaces in an attempt to investigate the influence of surface roughness on laser scattering and absorption. Paper 6 is a full 3D ray-tracing investigation of the interaction of laser light with a rough metallic surface, where some comparisons also are made to the previous 2D model.
Smoothing of three dimensional models by convolution (2002)

Any 3D shape can be described as a function g(x,y,z) where g>0 inside the shape and g<0 outside. The convolution of g with a suitable filter describes a smoothed shape where sharp edges and corners have been rounded. This idea provides a simple and uniform method to create blends and fillets for engineering objects and a way to build more organic shapes by smoothing idealised geometrical shapes. Convolution in three dimensions requires too much computation to use this idea directly but we can make a useful approximation by representing the convolved function at points on a three dimensional grid and interpolating between these points. The grid can be regular or adaptive (octree). Using this approach, we have successfully modelled a variety of objects including engineering parts and animal forms.
A more efficient residue arithmetic implementation of the FFT (1985)

After 20 years, the FFT remains restricted in its real time capabilities. To overcome this throughput obstacle, fast residue arithmetic units are studied based on several recent innovations in the field of complex finite rings. A dedicated machine is designed which makes use of these new results and is compared to conventional FFT designs. Using high speed semiconductor memory to implement the required residue arithmetic mappings, speed and complexity metrics of a basic FFT unit are shown to be improved. However, the derived architecture and arithmetic introduce a new and challenging set of magnitude scaling problems. They are resolved with the result being an integrated residue arithmetic FFT system capable of supporting very high real time data rates.
A-Vu: a visualization tool for complex software systems (2003)

The basic concepts underlying the A-Vu utility are presented. A-Vu is a general purpose tool for visualizing the structural aspects of complex software designs. Starting from a directed graph representation of a system or an Ada program library, A-Vu develops a variety of 'nice' graphs that reveal different visual representations of a design. A-Vu determins the method of visual expression, organizes the diagram in terms of desirable perceptual properties, and establishes an aesthetic layout. Formally, given a directed graph G=(V,E), A-Vu searches for a configuration C such that a suitably defined 'energy' function J(C) is minimized. The definition of J(C) includes software engineering considerations such as layering and modularity, as well as aesthetic considerations like visual appeal, cognitive correctness, and so on. This function is used in conjunction with simulated annealing and genetic algorithm techniques to obtain the 'minimum energy' configurations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Sigma Gamma Epsilon Student Research Poster Session, Geological Society of America Meeting 2015, Baltimore, Maryland, USA (2016)

The 2015 Sigma Gamma Epsilon Undergraduate Research (Poster Session) took place during the 2015 Geological Society of America annual meeting in Baltimore, Maryland on Tuesday, 3 November 2015. One hundred-one (101) posters were presented at the SGE poster session. The National Council of Sigma Gamma Epsilon awarded the Austin A. Sartin Best Poster Award to Kayleigh M. Harvey and Carrie A. Menold, students at Albion College. Kate C. Grisi and Michael Cl Rygel, students at State University of New York, College at Potsdam, were awarded the National Council’s Best Poster Award.
ADAM9 is highly expressed in renal cell cancer and is associated with tumour progression (2008)

ADAM9 is strongly expressed in a large proportion of renal cell cancers, concordant with findings in other tumour entities. Additionally, ADAM9 expression is significantly associated with markers of unfavourable prognosis. Whether the demonstrated prognostic value of ADAM9 is independent from other tumour parameters will have to be verified in larger study cohorts.