gebhart/patrepeval huggingface dataset:
Macromolecular Ultrafiltration with Microporous Membranes (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMacromolecular Ultrafiltration with Microporous MembranesR. L. GoldsmithCite this: Ind. Eng. Chem. Fundamen. 1971, 10, 1, 113–120Publication Date (Print):February 1, 1971Publication History Published online1 May 2002Published inissue 1 February 1971https://pubs.acs.org/doi/10.1021/i160037a019https://doi.org/10.1021/i160037a019research-articleACS PublicationsRequest reuse permissionsArticle Views371Altmetric-Citations129LEARN 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
Polymorphism in the Plasmodium falciparum erythrocyte-binding ligand JESEBL/EBA-181 alters its receptor specificity (2004)

The malaria parasite lives within erythrocytes and depends on the binding of parasite ligands to host cell surface receptors for invasion. The most virulent human malaria parasite, Plasmodium falciparum, uses multiple ligands, including EBA-175, BAEBL, and JESEBL of the Duffy-binding-like (DBL) family of erythrocyte-binding proteins, for invasion of human erythrocytes. Region II of these parasite ligands is the erythrocyte-binding domain. Previously, we had shown that polymorphism in region II of BAEBL leads to different erythrocyte-binding specificities. We have now identified and characterized the binding specificity of six JESEBL variants. We sequenced region II of JESEBL from 20 P. falciparum clones collected from various parts of the world where malaria is endemic. We observed eight JESEBL variants that contained amino acid polymorphisms at five positions among all clones. Seven of the eight variants could be connected by a single base change that led to an amino acid change. We investigated the functional significance of these polymorphisms by transiently expressing region II from six of JESEBL variants on the surface of Chinese hamster ovary cells. We observed four erythrocyte-binding patterns to enzyme-treated erythrocytes. Thus, P. falciparum DBL ligands JESEBL and BAEBL can recognize multiple receptors on the erythrocyte surface. In contrast to Plasmodium vivax, which has disappeared from West Africa because of the Duffy-negative blood group, P. falciparum may have been successful in endemic areas because it has mutated the ligands of the DBL family to create multiple pathways of invasion, thus making selection of refractory erythrocytes unlikely.
Finding Contradictions in Text (2008)

Detecting conflicting statements is a foundational text understanding task with applications in information analysis. We propose an appropriate definition of contradiction for NLP tasks and develop available corpora, from which we construct a typology of contradictions. We demonstrate that a system for contradiction needs to make more fine-grained distinctions than the common systems for entailment. In particular, we argue for the centrality of event coreference and therefore incorporate such a component based on topicality. We present the first detailed breakdown of performance on this task. Detecting some types of contradiction requires deeper inferential paths than our system is capable of, but we achieve good performance on types arising from negation and antonymy. 1
A Layer-by-Layer Approach To Retain a Fluorescent Glucose Sensing Assay within the Cavity of a Hydrogel Membrane (2018)

A continuous glucose monitoring device that resides fully in the subcutaneous tissue has the potential to greatly improve the management of diabetes. Toward this goal, we have developed a competitive binding glucose sensing assay based on fluorescently labeled PEGylated concanavalin-A (PEGylated-TRITC-ConA) and mannotetraose (APTS-MT). In the present work, we sought to contain this assay within the hollow central cavity of a cylindrical hydrogel membrane, permitting eventual subcutaneous implantation and optical probing through the skin. A "self-cleaning" hydrogel was utilized because of its ability to cyclically deswell/reswell in vivo, which is expected to reduce biofouling and therefore extend the sensor lifetime. Thus, we prepared a hollow, cylindrical hydrogel based on a thermoresponsive electrostatic double network design composed of <i>N</i>-isopropylacrylamide and 2-acrylamido-2-methylpropanesulfonic acid. Next, a layer-by-layer (LbL) coating was applied to the inner wall of the central cavity of the cylindrical membrane. It consisted of 5, 10, 15, 30, or 40 alternating bilayers of positively charged poly(diallyldimethylammonium chloride) and negatively charged poly(sodium 4-styrenesulfonate). With 30 bilayers, the leaching of the smaller-sized component of the assay (APTS-MT) from the membrane cavity was substantially reduced. Moreover, this LbL coating maintained glucose diffusion across the hydrogel membrane. In terms of sensor functionality, the assay housed in the hydrogel membrane cavity tracked changes in glucose concentration (0 to 600 mg/dL) with a mean absolute relative difference of ∼11%.
Expression, Purification, and Properties of Recombinant Barley (Hordeum sp.) Hemoglobin (1997)

A cDNA encoding barley hemoglobin (Hb) has been cloned into pUC 19 and expressed in Escherichia coli. The resulting fusion protein has five extra amino acids at the N terminus compared with the native protein, resulting in a protein of 168 amino acids (18.5 kDa). The recombinant Hb is expressed constitutively. Extracts made from the bacteria containing the recombinant fusion construct contain a protein with a subunit molecular mass of approximately 18.5 kDa comprising approximately 5% total soluble protein. Recombinant Hb was purified to homogeneity according to SDS-polyacrylamide gel electrophoresis by sequential polyethylene glycol precipitation and fast protein liquid chromatography. Its native molecular mass as assessed by fast protein liquid chromatography-size exclusion was 40 kDa suggesting that it is a dimer. Ligand binding experiments demonstrate that 1) barley Hb has a very slow oxygen dissociation rate constant (0.0272 s-1) relative to other Hbs, and 2) the heme of ferrous and ferric forms of the barley Hb is low spin six-coordinate. The subunit structure, optical spectrum, and oxygen dissociation rate of native barley hemoglobin are indistinguishable from those obtained for the recombinant protein. The implications of these kinetic data on the in vivo function of barley Hb are discussed.
Sensor Selection method for IoT systems – focusing on embedded system requirements (2016)

Recently, various types of sensors have been developed. Using these sensors, IoT systems have become hot topics in embedded system domain. However, sensor selections for embedded systems are not well discussed up to now. This paper focuses on embedded system’s features and architecture, and proposes a sensor selection method which is composed seven steps. In addition, we applied the proposed method to a simple example – a sensor selection for computer scored answer sheet reader unit. From this case study, an idea to use FTA in sensor selection is also discussed.
In situ reduction study of cobalt model Fischer-Tropsch synthesis catalyst (2014)

Fischer-Tropsch (FT) synthesis is an important process to manufacture hydrocarbons and oxygenated hydrocarbons from mixtures of carbon monoxide and hydrogen (syngas). The catalysis process occurs on for example cobalt metal surfaces at elevated temperatures and pressures. A fundamental understanding of the reduction pathway of supported cobalt oxides, and the intermediate species present during the activation, can assist in developing improved industrial supported cobalt catalysts. Measurements were done during in-situ hydrogen activation of a model Co/alumina catalyst using in-situ synchrotron X-ray powder diffraction and pair-distribution function (PDF) analysis. Strong metal-support interactions between the Co and the support1 can make the catalyst more stable towards sintering. The supported cobalt oxide catalyst precursors have to undergo reductive pre-treatments before their use as FT catalysts. During activation the cobalt oxides evolve, resulting in the formation of metallic cobalt depending on temperature, pressure of activation gases, concentration, time of exposure etc. The effect of hydrogen activation treatments on model catalysts were reported previously [1,2], however analysis of the alumina support phases was excluded from the interpretation by subtraction and normalisation. The PDF refinement accounted for all cobalt present in the catalyst sample and after reduction mainly Co(fcc) with a little Co(hcp) was found to be present. This is a novel approach to in situ PDF analysis of catalysts containing a mixture of phases [3].
Verres moléculaires à base de carbazole pour ssDSSC : une alternative au spiro-OMeTAD (2012)

National audience
Remodeling nuclear architecture allows efficient transport of herpesvirus capsids by diffusion (2015)

The nuclear chromatin structure confines the movement of large macromolecular complexes to interchromatin corrals. Herpesvirus capsids of approximately 125 nm assemble in the nucleoplasm and must reach the nuclear membranes for egress. Previous studies concluded that nuclear herpesvirus capsid motility is active, directed, and based on nuclear filamentous actin, suggesting that large nuclear complexes need metabolic energy to escape nuclear entrapment. However, this hypothesis has recently been challenged. Commonly used microscopy techniques do not allow the imaging of rapid nuclear particle motility with sufficient spatiotemporal resolution. Here, we use a rotating, oblique light sheet, which we dubbed a ring-sheet, to image and track viral capsids with high temporal and spatial resolution. We do not find any evidence for directed transport. Instead, infection with different herpesviruses induced an enlargement of interchromatin domains and allowed particles to diffuse unrestricted over longer distances, thereby facilitating nuclear egress for a larger fraction of capsids.
Performance of an efficient method for association admission control in public wireless LAN systems (2005)

The paper generally relates to the field of wireless local area networks (WLANs), and, more particularly, to AP selection and association methods for the performance of a station. IEEE 802.11 WLAN is widely deployed and used as an emerging service to connect to the high-speed Internet in the public wireless environment. However, if there are many users in a hot spot area, they suffer a severe decrease of performance. Thus it needs an association and access control mechanism, especially when it is used in the public environment. We suggest an efficient association method using beacon or probe response frames based IEEE 802.11 and analyze the performance of stations. A station selects an AP using the information of the capability region in a beacon or a probe response frame. An association method for a public WLAN service, which includes a WLAN user terminal and an AP for relaying WLAN communications to and from the user terminal, includes the steps of the user terminal asking the AP's states to access with a radio channel; the station then selects and associates with the AP. Further, it is possible to improve the efficiency of network management.
Use of Variogram Parameters in Analysis of Hyperspectral Imaging Data Acquired from Dual-Stressed Crop Leaves (2012)

A detailed introduction to variogram analysis of reflectance data is provided, and variogram parameters (nugget, sill, and range values) were examined as possible indicators of abiotic (irrigation regime) and biotic (spider mite infestation) stressors. Reflectance data was acquired from 2 maize hybrids (Zea mays L.) at multiple time points in 2 data sets (229 hyperspectral images), and data from 160 individual spectral bands in the spectrum from 405 to 907 nm were analyzed. Based on 480 analyses of variance (160 spectral bands × 3 variogram parameters), it was seen that most of the combinations of spectral bands and variogram parameters were unsuitable as stress indicators mainly because of significant difference between the 2 data sets. However, several combinations of spectral bands and variogram parameters (especially nugget values) could be considered unique indicators of either abiotic or biotic stress. Furthermore, nugget values at 683 and 775 nm responded significantly to abiotic stress, and nugget values at 731 nm and range values at 715 nm responded significantly to biotic stress. Based on qualitative characterization of actual hyperspectral images, it was seen that even subtle changes in spatial patterns of reflectance values can elicit several-fold changes in variogram parameters despite non-significant changes in average and median reflectance values and in width of 95% confidence limits. Such scattered stress expression is in accordance with documented within-leaf variation in both mineral content and chlorophyll concentration and therefore supports the need for reflectance-based stress detection at a high spatial resolution (many hyperspectral reflectance profiles acquired from a single leaf) and may be used to explain or characterize within-leaf foraging patterns of herbivorous arthropods.
"Governance of the University: Rules, Rights, and Responsibilities" (1966)

T HE REGULATION and control of the behavior of the members of the university community through the exercise of administrative rulemaking authority is beset with unusual difficulties that seem to inhere in the nature of the institution. The characteristic individualism and cherished independence of the faculty combined with the assertiveness, exuberance, and idealism of large numbers of students eager to challenge the contemporary adult world make up a population of high and unpredictable volatility. Although the history of higher education both here and abroad is filled with illustrative examples of conflict between town and gown that reach back to the middle ages,' every new occasion is greeted by the nonuniversity world with fresh surprise, dismay, and insistent demands that the university's administrative officials take prompt action to suppress not only the more traditional outbreaks of student rowdiness but also the demonstrations, parades, and sit-ins which have proven to be so effective today in expressing campus protest and dissent.
Optical projection tomography and light sheet microscopy for imaging in biological specimens a comparison study (2014)

Optical Projection Tomography and Light Sheet Microscopy have been recent revolutionary techniques for imaging in biological specimens with 3D volume rendering of high resolution. A comparison study is performed on the basic aspects of each modality and combined application on selected specimen is presented. The imaging performance characteristics of the two modalities are calculated and analyzed. Studies in model organisms such as Caenorhabditis Elegans and Parhyale, are shown and the significance of each method is discussed in relation to the specific applications they are best tailored for.
Heart Rate Variability Based Estimation of Maximal Oxygen Uptake in Athletes Using Supervised Regression Models (2023)

Wearable Heart Rate monitors are used in sports to provide physiological insights into athletes' well-being and performance. Their unobtrusive nature and ability to provide reliable heart rate measurements facilitate the estimation of cardiorespiratory fitness of athletes, as quantified by maximum consumption of oxygen uptake. Previous studies have employed data-driven models which use heart rate information to estimate the cardiorespiratory fitness of athletes. This signifies the physiological relevance of heart rate and heart rate variability for the estimation of maximal oxygen uptake. In this work, the heart rate variability features that were extracted from both exercise and recovery segments were fed to three different Machine Learning models to estimate maximal oxygen uptake of 856 athletes performing Graded Exercise Testing. A total of 101 features from exercise and 30 features from recovery segments were given as input to three feature selection methods to avoid overfitting of the models and to obtain relevant features. This resulted in the increase of model's accuracy by 5.7% for exercise and 4.3% for recovery. Further, post-modelling analysis was performed to remove the deviant points in two cases, initially in both training and testing and then only in training set, using k-Nearest Neighbour. In the former case, the removal of deviant points led to a reduction of 19.3% and 18.0% in overall estimation error for exercise and recovery, respectively. In the latter case, which mimicked the real-world scenario, the average R value of the models was observed to be 0.72 and 0.70 for exercise and recovery, respectively. From the above experimental approach, the utility of heart rate variability to estimate maximal oxygen uptake of large population of athletes was validated. Additionally, the proposed work contributes to the utility of cardiorespiratory fitness assessment of athletes through wearable heart rate monitors.
[Bis(diphenylphosphino)methane][μ,η2-bis(trimethylstannyl)acetylene]tetracarbonyldicobalt (2001)

The title compound, [Co2(C25H22P2)(C8H18Sn2)(CO)4], was prepared by displacement of two mol­ecules of carbon monoxide in hexa­carbonyl­dicobalt­[μ,η2-bis-(tri­methyl­stannyl)]­acetyl­ene with a bidentate bis­(di­phenyl­phosphino)­methane ligand. The displacement of carbon monoxide yields the product with substantially increased thermal stability and brings about noticeable changes in the geometry of the dicobaltatetrahedrane moiety, viz. lengthening of the carbon–carbon bond and shortening of the cobalt–cobalt and cobalt–carbon bonds.
Generation and detection of terahertz radiation up to 4.5 THz by low-temperature grown GaAs photoconductive antennas excited at 1560 nm (2013)

Generation and detection of terahertz radiation at 1560 nm based on low-temperature grown GaAs photoconductive antennas are demonstrated. The dependence of the DC photo current and terahertz peak amplitude on the illumination power are measured and found to follow a superlinear power law proposed for sequential charge carrier excitation via midgap states. A terahertz time domain spectroscopy system employing low-temperature grown GaAs photoconductive antennas pumped at 1560 nm reaches a bandwidth of 4.5 THz and a peak signal to noise ratio of 29 dB, while the reference measurement at 780 nm reaches 40 dB and a bandwidth of approximately 3 THz.
<p>Synthesis, structure elucidation, and antifungal potential of certain new benzodioxole&ndash;imidazole molecular hybrids bearing ester functionalities</p> (2019)

Single-crystal X-ray analysis of compound <b>5o</b> confirmed without doubt the assigned chemical structures of the title compounds as well as confirmed the (<i>E</i>)-configuration of their oximino group. Compounds <b>5b, 5l, 5m,</b> and <b>5o</b> emerged as the most active compounds against the tested fungi and they could be considered as new antifungal lead candidates.
[(NHC)Fe(CO)4] Efficient Pre‐catalyst for Selective Hydroboration of Alkenes (2014)

Abstract [(IMes)Fe(CO) 4 ] [IMes=1,3‐bis(2,4,6‐trimethylphenyl) imidazol‐2‐ylidene] complex was found to be an efficient pre‐catalyst for the hydroboration of functional alkenes in the presence of pinacolborane at room temperature. Notably, UV irradiation (350 nm) is important to promote this catalytic transformation. Interestingly, high chemo‐ and regioselectivities were observed as only anti‐Markovnikov boronate derivatives were obtained and various functional groups can be tolerated.
Cooperative Operation of Active Power Filters by Instantaneous Complex Power Control (2007)

The paper describes an approach to cooperative control of multiple active compensators acting in the same network. The goal is to take full advantage of the installed harmonic and reactive compensation capability to optimize the operation at the point of common coupling, even in presence of non-sinusoidal voltage supply and distorting loads. The cooperative operation is based on the conservation of instantaneous complex power, a quantity which envelopes power and energy information of the related electrical network. Based on the properties of instantaneous complex power, a synergistic control technique of thyristor-controlled reactive compensators and active power filters is derived, which sets the basis for cooperative operation.
Crystal Plasticity Simulation of Ti-6Al-4V Under Fretting Fatigue (2005)

Fretting fatigue is often the root cause of the nucleation of cracks at attachments of structural components. Since fretting fatigue damage accumulation occurs over relatively small volumes, the subsurface cyclic plastic strain is expected to be rather non-uniformly distributed in polycrystalline materials. The scale of the cyclic plasticity and the damage process zones is often on the order of microstructure dimensions. Fretting damage analyses using cyclic crystal plasticity constitutive models have the potential to account for the influence of size, morphology, and crystallographic orientation of grains on fretting damage evolution. Two-dimensional plane strain simulations of fretting fatigue are performed using the cyclic properties of Ti-6AI-4V. The crystal plasticity simulations are compared to an initially isotropic J₂ theory with nonlinear kinematic hardening as well as to experiments. The influence of initially isotropic versus textured microstructure in the presence of crystallographic slip is studied.