gebhart/patrepeval huggingface dataset:
Aggregation and Adherence of <i>Streptococcus sanguis</i> : Role of Human Salivary Immunoglobulin A (1979)

Fourteen freshly isolated strains of Streptococcus sanguis were obtained from the dental plaque of five healthy adults. Whole saliva was collected concomitant with the plaque isolates from the five subjects, and a second whole saliva sample was collected 10 weeks later. All possible combinations of the first five saliva samples, the second five saliva samples, and 14 strains of bacteria were tested for aggregation. Of the 140 combinations examined, 108 of 140 (77%) of the strains aggregated with the first saliva samples and 95 of 140 (68%) aggregated with the second saliva samples. Overall, 72% of the strains aggregated with both the first and second saliva samples. Removal of immunoglobulin A (IgA) from these same salivas resulted in 38 of 108 (35%) of the aggregates decreasing in intensity with the first saliva samples and 27 of 95 (29%) of the aggregates decreasing in intensity with the second saliva samples. No aggregates increased in intensity with saliva samples when IgA had been removed. Removal of IgA from saliva also resulted in a mean decrease of 46% in adherence of S. sanguis to hydroxyapatite coated with the IgA-deficient saliva. Several strains of S. sanguis were shown to aggregate strongly with human salivary and colostral IgA. In addition, S. sanguis strain S7 showed a 31% stimulation of adherence to hydroxyapatite precoated with human salivary IgA over the uncoated controls. Stepwise removal of IgA from saliva resulted in a decrease in aggregation intensity from strong (4+) to weak (1+ to 2+). Similarly, the adherence of S. sanguis to hydroxyapatite coated with these saliva samples decreased linearly as the salivary IgA was depleted. Alternatively, the addition of a small quantity of salivary IgA (20 mug/ml) to progressively diluted saliva maintained a high level of adherence and strong aggregation until the saliva dilutions reached between 1:8 in the adherence experiments and 1:32 for the aggregations. These data indicate that salivary IgA may play an important role in the microbial ecology of human dental plaque formation.
Indenylvanadium(V)-Verbindungen. Darstellung, Struktur und NMR-spektroskopische Untersuchungen (1999)

Die Darstellung der Indenylvanadium(V)-Verbindungen wird beschrieben: tC4H9N = V(η5-C9H7)Cl2 (1), tC4H9N = V(η5-C9H7)Br2 (2), tC4H9N = V(η5-C9H7) · (OtC4H9)Cl (3), tC4H9N = V(η1-C9H7)(OtC4H9)2 (4), tC4H9N = V(η1-C9H7)2(OtC4H9) (5), tC4H9N = V(η1-C9H7) · (η5-C5H5)(OtC4H9) (6), tC4H9N = V(η1-C9H7)(η5-C5H5) · (NHtC4H9) (7). Alle Verbindungen werden mit spektroskopischen Methoden (MS; 1H-, 13C-, 51V-NMR) vollständig charakterisiert; von 3 wurde die Kristallstruktur bestimmt. NMR-spektroskopisch kann für 6 das Vorliegen der Diastereomeren RR/SS und RS/SR nachgewiesen werden. Bei der Zersetzung von 1 in Lösung entsteht der Chlorovanadat(IV)-Komplex [NHC4H9]2+[(tC4H9N)7V7(μ-Cl)14Cl2]2–; die Kristallstrukturanalyse zeigt eine Rad-Struktur mit tert-Butylammonium-Kationen, die über Wasserstoffbrücken an das Komplex-Anion gebunden sind. Indenylvanadium(V) Compounds Synthesis, Structure, and NMR Spectroscopic Studies Syntheses of the indenylvanadium(V)compounds are described: tC4H9N = V(η5-C9H7)Cl2 (1), tC4H9N = V(η5-C9H7)Br2 (2), tC4H9N = V(η5-C9H7)(OtC4H9)Cl (3), tC4H9N = V(η1-C9H7)(OtC4H9)2 (4), tC4H9N = V(η1-C9H7)2(OtC4H9) (5), tC4H9N = V(η1-C9H7)(η5-C5H5) · (OtC4H9) (6), tC4H9N = V(η1-C9H7)(η5-C5H5)(NHtC4H9) (7). All compounds were totally characterized by spectroscopic methods (MS; 1H, 13C, 51V NMR), 3 by single crystal X-ray diffraction. For 6 the presence of the diastereomeres RR/SS and RS/SR was shown by NMR spectroscopy. The chlorovanadate (IV) complex [NHC4H9]2+[(tC4H9N)7V7 · (μ-Cl)14Cl2]2– has been obtained by decomposition of 1 in solution; the crystal structure indicates a wheel structure with hydrogen bonds between the tert-butylammonium cations and the complex anion.
PDGF and FGF2 regulate oligodendrocyte progenitor responses to demyelination (2003)

Acute demyelination of adult CNS, resulting from trauma or disease, is initially followed by remyelination. However, chronic lesions with subsequent functional impairment result from eventual failure of the remyelination process, as seen in multiple sclerosis. Studies using animal models of successful remyelination delineate a progression of events facilitating remyelination. A universal feature of this repair process is extensive proliferation of oligodendrocyte progenitor cells (OPs) in response to demyelination. To investigate signals that regulate OP proliferation in response to demyelination we used murine hepatitis virus-A59 (MHV-A59) infection of adult mice to induce focal demyelination throughout the spinal cord followed by spontaneous remyelination. We cultured glial cells directly from demyelinating and remyelinating spinal cords using conditions that maintain the dramatically enhanced OP proliferative response prior to CNS remyelination. We identify PDGF and FGF2 as significant mitogens regulating this proliferative response. Furthermore, we demonstrate endogenous PDGF and FGF2 activity in these glial cultures isolated from demyelinated CNS tissue. These findings correlate well with our previous demonstration of increased in vivo expression of PDGF and FGF2 ligand and corresponding receptors in MHV-A59 lesions. Together these studies support the potential of these pathways to function in vivo as critical factors in regulating remyelination.
Determination of dissociation constants of species oxidizable in aqueous solution by air oxygen on an example of quercetin (2010)

The comparison of literature data on the dissociation constant of one of the most abundant natural flavonoids, e.g., quercetin, demonstrates their irreproducibility. The reason for this likely corresponds to the easiness of its oxidation by air oxygen during the titration process. To eliminate such problems, a modified version of potentiometric titration was proposed with bubbling a weak flow of an inert gas (nitrogen) through the solution to be titrated in the presence of minimal amounts of a nonionic surfactant. By virtue of the technique proposed, the values of pK a for quercetin were measured to be 6.62 ± 0.04 and 9.7 ± 0.3. The first one corresponds to the hydroxyl group in the γ-pyrone fragment of the molecule, while another agrees with the typical values of pK a for phenols.
Saturated Hydrocarbons of High Molecular Weight (1953)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSaturated Hydrocarbons of High Molecular WeightS. A. FrancisCite this: Anal. Chem. 1953, 25, 10, 1466–1470Publication Date (Print):October 1, 1953Publication History Published online1 May 2002Published inissue 1 October 1953https://pubs.acs.org/doi/10.1021/ac60082a014https://doi.org/10.1021/ac60082a014research-articleACS PublicationsRequest reuse permissionsArticle Views62Altmetric-Citations31LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
[An unusual association: panarteritis nodosa and rheumatoid arthritis as an overlapping collagenous syndrome]. (1992)

The clinical record of a woman with two connective tissue diseases is presented. It started as a necrotizing arteritis with hepatic involvement and chronic multineuritis consistent with PAN. After a long period of clinical evolution the patient developed a real rheumatoid arthritis with positive RF. This clinical picture overlapped clinically and serologically the former one. A good response to the steroid therapy and a careful follow-up permitted a satisfactory life to this patient for about ten years.
Hybrid, high-precision localisation for the mail distributing mobile robot system MOPS (2002)

Describes the new localisation algorithms under implementation for the mail distributing mobile robot, MOPS, of the Institute of Robotics, Swiss Federal Institute of Technology Zurich. Using geometric primitives as features, we employ consistent probabilistic feature extraction, clustering, matching and estimation of the vehicle position and orientation. The extracted features and their first-order covariance estimates are used, together with a world model, by an extended Kalman filter so as to get an optimal estimate of MOPS' current pose vector and the associated uncertainty. The line extraction consists of an initial segmentation, based on a feature-independent compactness measure in the model space, and a subsequent probabilistic clustering step. This yields a highly accurate and efficient localisation.
Diffusion Models Beat GANs on Image Synthesis (2021)

We show that diffusion models can achieve image sample quality superior to the current state-of-the-art generative models. We achieve this on unconditional image synthesis by finding a better architecture through a series of ablations. For conditional image synthesis, we further improve sample quality with classifier guidance: a simple, compute-efficient method for trading off diversity for fidelity using gradients from a classifier. We achieve an FID of 2.97 on ImageNet 128$\times$128, 4.59 on ImageNet 256$\times$256, and 7.72 on ImageNet 512$\times$512, and we match BigGAN-deep even with as few as 25 forward passes per sample, all while maintaining better coverage of the distribution. Finally, we find that classifier guidance combines well with upsampling diffusion models, further improving FID to 3.94 on ImageNet 256$\times$256 and 3.85 on ImageNet 512$\times$512. We release our code at https://github.com/openai/guided-diffusion
[Development and applications of a gastrointestinal monitoring microsystem based on the smart capsule]. (2006)

A newly-developed gastrointestinal (GI) monitoring system based on a smart capsule is presented in the paper. The unprecedented 130-200 hours battery life and smaller size (10 mm x 20 mm) allows the physician to get total pan-colonic measurements of high-amplitude propagating contractions (HAPCs). To test the in vivo performance of the monitoring system, 15 healthy volunteers and 10 patients with slow transportation constipation (STC) participate in this study. The average of HAPCs occurred in patients is significantly lower than in volunteers (12.4 +/- 3.3 vs. 18.5 +/- 3.7 p = 0.013). The system provides a useful tool for STC diagnosis and treatments of patients.
Performance analysis of blind signal estimation using fourth order cumulants (2002)

Investigates the performance of blind signal "COPY" algorithms which use fourth order cumulants to estimate the steering vectors. The steering vectors are then used to form a linear combiner, to produce estimates of the signals. The authors derive an asymptotic expression for the upper bound on the quality of the estimated signal in terms of the output signal-to-interference ratio. Some insight into the achievable performance of such algorithms is obtained by numerical evaluation of the bound for two test cases of interest.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The Authorship of Places: Reflections on Fieldwork in South Africa (1986)

A social geographer takes a reflective view from afar of troubled South Africa, where he did intensive fieldwork. Issues of personal, academic, and social responsibility, plus those of the philosophy of social science, arise.
Outcome of triplets and high-order multiple pregnancies (2003)

Available data imply that in order to improve outcomes further, all multiple pregnancies deserve optimal perinatal care, something that is not always obtainable.
Evidence that UGA is read as a tryptophan codon rather than as a stop codon by Mycoplasma pneumoniae, Mycoplasma genitalium, and Mycoplasma gallisepticum (1990)

Molecular cloning and sequencing showed that Mycoplasma gallisepticum, like Mycoplasma capricolum, contains both tRNA(UCA) and tRNA(CCA) genes, while Mycoplasma pneumoniae and Mycoplasma genitalium each appear to have only a tRNA(UCA) gene. Therefore, these mycoplasma species contain a tRNA with the anticodon UCA that can translate both UGA and UGG codons.
Contrast enhancement of mammographic features: a comparison of four methods (1996)

The performance of four methods for feature enhanced mammographic images—optimal adaptive neighborhood imaging, automatic spatial filtering, adaptive histogram equalization imal contrast pixel to pixel—are compared. Each method is te a database of 50 mammographic images, which included similar shaped nodules. A contrast parameter was used to compare the performance of each processing method. It was found that the ma trast pixel-to-pixel method gives the highest contrast value. A mamogram including a real subtle lesion is used to illustrate the use of this last contrast enhancement method in clinical diagnosis.
The Reaction of 2,4,6-Triphenylpyrylium Ion with Phenylphosphine. 1-Hydroxy-1,2,4,6-tetraphenylphosphorabenzene (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Reaction of 2,4,6-Triphenylpyrylium Ion with Phenylphosphine. 1-Hydroxy-1,2,4,6-tetraphenylphosphorabenzeneCharles C. Price, T. Parasaran, and T. V. LakshminarayanCite this: J. Am. Chem. Soc. 1966, 88, 5, 1034–1037Publication Date (Print):March 1, 1966Publication History Published online1 May 2002Published inissue 1 March 1966https://pubs.acs.org/doi/10.1021/ja00957a031https://doi.org/10.1021/ja00957a031research-articleACS PublicationsRequest reuse permissionsArticle Views159Altmetric-Citations21LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Induction of neutral endopeptidase and angiotensin-converting enzyme activity of SK-N-SH cells in vitro by quercetin and resveratrol. (2002)

Quercetin and resveratrol are weak inhibitors of neutral endopeptidase (NEP) and angiotensin-converting enzyme (ACE) activity of the neuroblastoma cell line SK-N-SH. The long term incubation of the cells for 4 days with quercetin, resveratrol and a combination of both substances in concentrations lower than necessary for inhibition of NEP and ACE activity induced the cellular enzyme activity of NEP and ACE associated with an inhibition of cellular proliferation. The long term treatment of neuroblastoma cells with quercetin and resveratrol enhanced the differentiation state of the cells. Taking into account the significance of NEP and ACE for the degradation of amyloid beta peptides, the effect of quercetin and resveratrol as constituents of red wine for a neuroprotective activity is discussed.
만성 특발성 두드러기 환자에서 high-affinity IgE 수용체에 대한 자가항체의 의의 (2001)

The pathogenesis of chronic idiopathic urticaria is not completely understood, but mast cell degranulation and histamine release are thought to be of central importance. It is now established that circulating autoantibodies against the high-affinity IgE receptor (Fc e RI α ) can be found approximately one third of patients with chronic idiopathic urticaria. These autoantibodies can be detected by in vivo autologous serum skin test and by in vitro basophil and mast cell histamine release assays as functional tests, and also can be confirmed by in vitro enzyme-linked immunosorbent assay to Fc e RI α and Western blot analysis. Our purpose was to determine the proportion of patients with positive autologous serum skin test and anti-Fc e RI α antibody in chronic idiopathic urticaria and whether there are differences between patients with and those without autoantibodies in the clinical features. Results are as follows: 1. Positive result to autologous serum skin test was 58.5% in 41 patients of chronic idiopathic urticaria. There was no significant difference of clinical features and laboratory tests between patients with positive skin test and those with negative results. 2. By enzyme-linked immunosorbent assay, anti-Fc e RI α antibody was detected in sera from 34% of patients with chronic idiopathic urticaria. 3. In sera from 33% of patients with positive skin test and 35% of those with negative result, we could demonstrate anti-Fc e RI α antibody by enzyme-linked immunosorbent assay. 4. There was no differences of clinical features and laboratory tests between the patients with autoantibodies to Fc e RI α and those without, except female predominance and longer urticaria history in those with autoantibodies. (Korean J Dermatol 2001; 39(1): 43~49) Our results demonstrated anti-Fc e RI α antibody in the sera of chronic idiopathic urticaria patients, but there was no differences of clinical features and laboratory tests between the patients with autoantibodies to Fc e RI α and those without. And we could not demonstrate the correlation between autologous serum skin test and the occurrence of anti-Fc e RI α antibody.
A multi-rate filter bank pre-processor for image compression (2003)

A multirate-filter-bank is introduced which is used as a preprocessor/postprocessor pair to improve the quality of general image coding methods such as linear predictive coding, vector-quantization, transform coding, and subband coding. Computer simulations demonstrating the versatility of this technique, are presented. In most cases tested, using the multirate filter banks provided better subjective and objective performance in coding.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A programmable processing element dedicated as building block for a large area integrated multiprocessor system (2002)

The architecture and implementation of a programmable processing element dedicated as building block for a large area integrated multiprocessor system is presented. The processor element allows an efficient implementation of video coding standards. It consists of a RISC processor supplemented by a low level coprocessor for computation intensive convolution-like tasks. Several of the processing elements can be bus-connected to built a coarse-grained MIMD based large area integrated multiprocessor system. Each of the processor elements provides high performance for video coding tasks in order to keep the overall number of required processing elements for complex real-time video coding applications small. A key feature of the processing element to support large area integration is a unidirectional data supply which allows reconfiguration strategies for the interconnection network. Furthermore on-chip program and data memories have been implemented in order to relax the overall bandwidth requirements of the large area integrated multiprocessor system.
<i>Clostridium ramosum</i> Bacteremia: Case Report and Literature Review (2013)

Clostridium ramosum is a common but generally commensal bacterial species. Rarely, it becomes pathogenic in young children or immunosuppressed adults.
On reason, mythologies and natural resource conservation (1987)

Natural resources, Resource conservation, Sociological aspects
Formulation of Living Biological Control Agents with Alginate (1988)

Alginate is a water-soluble polysaccharide gum that has excellent gel-forming properties. Living organisms that are capable of biologically controlling a variety of agricultural pests can easily be entrapped in a calcium alginate matrix by a fast, gentle, aqueous, room temperature process. The gel beads, granules, or seed coatings that are produced by the process are biodegradable in the environment. Weed-killing fungi (Alternaria, Fusarium, and Phyllosticta spp.), antagonistic fungi (Trichoderma, Gliocladium, Talaromyces, and Penicillium spp.) and bacteria (Pseudomonas and Bacillus spp.) which can control soilborne plant disease pathogens, and insect-killing nematodes (Steinernema and Heterorhabditis spp.) have all been formulated successfully using alginate. This relatively new use of alginate properties to formulate biocontrol agents is a versatile and promising development in agricultural research which is reviewed in this paper.
Intellectual (Dis)Formations: Notes From the Borders of the Third Wave (2013)

Anthurium: A Caribbean Studies Journal includes scholarship on the work of visual artists, commentary on current issues in Caribbean studies and travelogues. Anthurium remains committed to bridging the digital divide by making peer reviewed, scholarly articles and creative writing available to teachers, students, scholars and persons interested in Caribbean literature and culture worldwide without fee based subscriptions. We would like to thank those of you who continue to support refereed, open access academic e-journals such as ours.
Identification of Thyroid Blocking Antibodies and Receptor Epitopes in Autoimmune Hypothyroidism by Affinity Purification Using Synthetic TSH Receptor Peptides (1995)

(1) The majority of patients with autoimmune hypothyroidism have antibodies against the TSHr-ECD that recognized linear epitopes. Most have antibodies directed at more than one site and the pattern is quite heterogeneous. (2) Six sites (noted above) are most frequently recognized. (3) Inhibitory antibodies are distinct from anti-microsomal and anti-thyroglobulin antibodies.
Antimicrobial activity of ovine casein hydrolysates. A preliminary study (2013)

A cation exchange Fast Protein Liquid Chromatography (FPLC) method on semi-preparative scale was optimised to obtain different casein fractions from whole ovine casein. The method provided sufficient quantities of three different fractions (β-, κ- and αs-CN) in few analyses. These three fractions and whole casein were hydrolysed with pepsin, trypsin and chymotrypsin for 6 hours. The effect of casein fractions and casein hydrolysates on Escherichia coli JM103, a microorganism containing a luciferase structural gene, was tested in vitro with a bioluminescence assay. The casein fractions did not decrease the metabolic activity of E. coli JM103. However, β-CN hydrolysates provided a strong inhibition of this activity at different concentrations. The observed effect was dose dependent, the lowest concentration (1 mg/ml) provided only a slight inhibition of bioluminescent activity (about 59.8% of the control after 4 hours), whereas 2 and 10 mg/ml showed a stronger effect on the metabolic activity of E. coli JM103.