gebhart/patrepeval huggingface dataset:
Biosynthesis of Vitamin B<sub>2</sub> (Riboflavin) (2000)

The biosynthesis of one riboflavin molecule requires one molecule of GTP and two molecules of ribulose 5-phosphate as substrates. The imidazole ring of GTP is hydrolytically opened, yielding a 4, 5-diaminopyrimidine which is converted to 5-amino-6-ribitylamino-2, 4(1H,3H)-pyrimidinedione by a sequence of deamination, side chain reduction and dephosphorylation. Condensation of 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione with 3, 4-dihydroxy-2-butanone 4-phosphate obtained from ribulose 5-phosphate affords 6,7-dimethyl-8-ribityllumazine. Dismutation of the lumazine derivative yields riboflavin and 5-amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione, which is recycled in the biosynthetic pathway. The structure of the biosynthetic enzyme, 6,7-dimethyl-8-ribityllumazine synthase, has been studied in considerable detail.
Bestimmung der Dissoziationskonstanten für Amylose‐Einschlußverbindungen (1978)

Abstract Mit Hilfe einer neuen Methode, die auf der photometrischen Titration der blauen Komplexverbindung zwischen Jod und Amylose beruht, wurden die Dissoziationskonstanten von Amylose‐Einschlußverbindungen bestimmt. In Abhängigkeit von der Konzentration der Gastmoleküle in dem Gemisch ändert sich die Menge an gebundenem Jod. Die Bereitschaft des Gastmoleküls zur Bildung von Amylose‐Einschlußverbindungen wird durch die Dissoziationskonstante charakterisiert.
New insights into interactions between the human PTH/PTHrP receptor and agonist/antagonist binding (1998)

We prepared a polyclonal antiserum [Ab-(88-97)] against residues 8-97 of the NH2-terminal tail of the human (h) parathyroid hormone (PTH)/PTH-related protein (PTHrP) receptor. Ab-(88-97) bound specifically to the receptor, as assessed by fluorescence-activated cell sorter analysis of HEK C21 cells, which stably express approximately 400,000 hPTH/PTHrP receptors per cell. Unlike PTH, Ab-(88-97) binding did not elicit either adenosine 3',5'-cyclic monophosphate or intracellular calcium concentration signaling responses in these cells. Incubation of C21 cells for 90 min at 4 degrees C with hPTH-(1-34) plus antiserum reduced the Ab-(88-97) binding to the cells by up to 40-50% of control values in a PTH concentration-dependent fashion with a half-maximal effective concentration of approximately 5 nM. The decrease in Ab-(88-97) binding caused by hPTH-(1-34) was completely reversed by coincubation with hPTHrP-(7-34). We conclude that residues 88-97 of the hPTH/PTHrPR are involved, either directly or indirectly, in agonist but not antagonist binding to the receptor.
Los significantes subordinados de la ruptura política menemista (2011)

Durante el gobierno de Carlos Menem se constituyó un fuerte discurso de ruptura social, a partir de la conformación de una amplia cadena de significantes anudados que lograron hegemonizar el espacio social. Sin embargo, la frontera interna del discurso menemista contiene, además, otros significantes de menor relevancia analítica que han sido relegados o ignorados por los estudios bibliográficos especializados. En un intento de complementar esos estudios, el siguiente trabajo se propone investigar la función política ejercida por lo que se define como los significantes subordinados de su formación hegemónica. En ese contexto, tomando como eje una metodología de análisis político del discurso presidencial y la utilización de fuentes secundarias basadas en los principales diarios de circulación nacional y algunas revistas especializadas, se analizan tres significantes que aparecen en la cadena interna del discurso de Menem, que le van a permitir fortalecer su frontera política o frontera de exclusión constituida en 1989. Ellos son: la defensa de la democracia, la libertad y el fin de la especulación.
Synthesis of Ag/Pd Nanoparticles and Their Low-Temperature Alloying within Thermally Evaporated Fatty Acid Films (2001)

The low-temperature alloying of Ag/Pd nanoparticles synthesized in a fatty acid film by a novel ion-entrapment process is described. Nanoparticles of silver and palladium were grown in thermally evaporated fatty acid (stearic acid) films by immersion of the film sequentially in solutions containing Ag+ ions and Pd2+ ions followed by their in-situ reduction at each stage. Incorporation of Ag+ and Pd2+ ions into the stearic acid film occurs by selective electrostatic binding with the carboxylate ions in the fatty acid matrix. It is observed that the reduction of the Pd2+ ions in the stearic acid−Ag nanocomposite film leads to the formation of a mixture of individual Ag and Pd nanoparticles as well as particles in the Ag-core/Pd-shell structure. Thermal treatment of the stearic acid−(silver + palladium) nanocomposite film at 100 °C resulted in the formation of an Ag−Pd alloy. The process of Ag+ and Pd2+ ion incorporation in the stearic acid matrix, their reduction to form metallic nanoparticles, and synthesis of the Ag−Pd alloy were followed by quartz crystal microgravimetry (QCM), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), UV−vis spectroscopy, and X-ray diffraction (XRD) measurements.
Automatic reconstruction of surfaces and scalar fields from 3D scans (1995)

We present an efficient and uniform approach for the automatic reconstruction of surfaces of CAD (computer aided design) models and scalar fields defined on them, from an unorganized collection of scanned point data. A possible application is the rapid computer model reconstruction of an existing part or prototype from a three dimensional (3D) points scan of its surface. Color, texture or some scalar material property of the physical part, define natural scalar fields over the surface of the CAD model.
Evaluation of matrix converter operation in abnormal conditions (2003)

The matrix converter connects the three-phase power supply with the three-phase load directly through a switching matrix composed of four-quadrant switches. In this paper, in order to evaluate and improve the performance of matrix converter, some experimental tests in typical abnormal conditions have been carried out. A 2.2 kW three-phase to three-phase matrix converter prototype is implemented based on DSP and PLD (programmable logic device) for the experimental tests. The operation of matrix converter with unbalanced power supply has been analyzed.
Versatile PEG-derivatized phosphine oxide ligands for water-dispersible metal oxide nanocrystals (2007)

We report the simple synthesis of poly(ethylene glycol)(PEG)-derivatized phosphine oxide ligands for water-dispersible metal oxide nanocrystals.
EKF-based 3D SLAM for structured environment reconstruction (2005)

This paper presents the extension and experimental validation of the widely used EKF-based SLAM algorithm to 3D space. It uses planar features extracted probabilistically from dense three-dimensional point clouds generated by a rotating 2D laser scanner. These features are represented in compliance with the symmetries and perturbation model (SPmodel) in a stochastic map. As the robot moves, this map is updated incrementally while its pose is tracked by using an extended Kalman filter. After showing how three-dimensional data can be generated, the probabilistic feature extraction method is described, capable of robustly extracting (infinite) planes from structured environments. The SLAM algorithm is then used to track a robot moving through an indoor environment and its capabilities in terms of 3D reconstruction are analyzed.
NICMOS Two Gyro Mode Coronagraphic Performance (2005)

In preparation for the Hubble Space Telescope (HST) entry into Two Gyro Mode (TGM) operations, the NICMOS coronagraphic performance was assessed during the February 21, 2005 TGM on orbit test (ID: 10448) in two filter bands (F110W and F160W). The gyroscope pair 2-4 was used for the TGM test. Observations were obtained of a previously observed calibration target (GJ517; sp.type=K5Ve) coronagraphically and with direct imaging. The F110W filter performance very closely tracks the three gyro mode (ID: 10177) results. The observed jitter of ~6.2 mas had little effect on the 1.1 µm coronagraphy. This result clearly shows that 1.1 µm coronagraphy is robust against the observed TGM jitter. The NICMOS coronagraph inner working angle (IWA) is 3.2 λ/D at 1.1 µm. Consequently, there is sufficient performance compliance to target decentering of these RMS amplitudes within the coronagraphic hole. There was a slight decline in performance with the F160W filter with respect to three gyro mode which may be due to imaging systematics; i.e., breathing and jitter. The 1.6 µm coronagraphy is more susceptible to imaging systematics primarily due its broader PSF (IWA=2.2 λ/D). At r=10 pixels, the coronagraphic diffracted and scattered light suppression factor is ~3 compared to direct imaging, while it is a factor of 4 in three gyro mode. The observed coronagraphic performance is essentially unaffected at 1.1 µm with TGM operations, while there is a marginal decline at 1.6 µm of similar amplitude to that arising from other well-known HST/NIC-MOS orbit-driven instabilities. The improvement in image contrast (and dynamic range) with coronagraphy and TGM is still substantial over direct imaging.
Assumptions Management in Software Development (2004)

Software developers constantly make assumptions about the interpretation of requirements, design decisions, operational domain, environment, characteristics of input data, and other factors during system implementation. These assumptions are seldom documented and less frequently validated by the people who have the knowledge to verify their appropriateness. Additionally, the business, legal, and operating environments are always changing, as well as the software itself, rendering previously valid assumptions invalid. This technical note explores assumptions management as a method for improving software quality. This exploration covers assumptions management concepts, results of work on a prototype Assumptions Management System, conclusions, lessons learned, and potential work in this area.
Comparison of topical EMLA 5% oral adhesive to benzocaine 20% on the pain experienced during palatal anesthetic infiltration in children. (2001)

The selection of EMLA 5% oral adhesive over other commercially available products containing benzocaine 20% is not recommended for palatal site preparation in children. The lack of demonstrated superiority in efficacy and subject preference, the necessity to custom mix the cream into an oral adhesive paste, the extended duration of time required for onset of action, the greater potential for complications associated with systemic absorption, and product cost preclude the use of EMLA 5% oral adhesive as an intraoral topical anesthetic agent.
Social learning strategies modify the effect of network structure on group performance (2016)

The structure of communication networks is an important determinant of the capacity of teams, organizations and societies to solve policy, business and science problems. Yet, previous studies reached contradictory results about the relationship between network structure and performance, finding support for the superiority of both well-connected efficient and poorly connected inefficient network structures. Here we argue that understanding how communication networks affect group performance requires taking into consideration the social learning strategies of individual team members. We show that efficient networks outperform inefficient networks when individuals rely on conformity by copying the most frequent solution among their contacts. However, inefficient networks are superior when individuals follow the best member by copying the group member with the highest payoff. In addition, groups relying on conformity based on a small sample of others excel at complex tasks, while groups following the best member achieve greatest performance for simple tasks. Our findings reconcile contradictory results in the literature and have broad implications for the study of social learning across disciplines.
ADANS: An agriculture domain question answering system using ontologies (2017)

The research area of Question Answering (QA) is explored widely to provide an accurate answer to questions asked in natural languages. In the deep ocean of information, the Web, searching for a concise answer is quite a time taking task. The QA system does this task on behalf of the questioner. Recently with the introduction of the semantic web, the web is progressing towards linked data. This data is available in the form of Resource Description Format(RDF) and Web Ontology Language(OWL). Querying this data requires the query to be expressed in SPARQL Protocol and RDF Query Language(SPARQL). This paper presents a QA system on agriculture domain, the ADANS, to answer queries given in natural language. The system uses a combination of Natural Language Processing(NLP) and semantic web technologies. The system formulates an SPARQL from the queries given in natural language. The query loosening part of the system helps in retrieving some less precise answers in acceptable time.
Novel oral combination chemotherapy in the treatment of intermediate-grade and high-grade AIDS-related non-Hodgkin's lymphoma. (1993)

This regimen is active in patients with AIDS-related non-Hodgkin's lymphoma. Because it is important to design systemic cytotoxic chemotherapy regimens that are cost-effective, considerate of quality-of-life issues, and efficacious in this patient population, this approach should be compared with standard intravenous combination chemotherapy regimens in randomized controlled clinical trials.
Design and evaluation of a MARS model implementation (2002)

Currently, the IETF standard for IP-ATM multicast address resolution is the Multicast Address Resolution Server (MARS). The MARS solution supports multicast either through "multicast meshes" of overlaid point-to-multipoint connections (VCMesh approach) or through Multicast Servers (MCS approach). Related work shows the performance of a multicast server implementation supporting just one layer-3 group and adopting an experimental UNI 3.x signalling stack. This paper describes the design and the implementation of the MARS architecture supporting multiple groups with the standard UNI 3.1 signalling protocol. Preliminary experimental tests evaluate the MARS scalability with a larger LIS and contrast the performance of the MCS approach against VCMesh supporting multiple groups.
Interactions between Servo Loops of an Optical Disk Drive (1997)

In optical disk drives, interactions between the electromechanical actuators and the servo error generation systems can cause instabilities in the operation of individual servo loops. We examine the effects of these interactions on the servo loops of an optical disk drive in which a galvano fine-tracking actuator, a push-pull tracking error detection scheme, and an astigmatic focus error detection method are used. Also, we describe a digital servo controller that effectively cancels the effects of the deleterious interactions, resulting in stable operation.
Experiments with Skin Resistance and Temperature for Liveness Detection (2008)

This article deals with liveness detection for biometric security systems which are based on fingerprint recognition. The article gives a global overview of known methods. At the end there are stated two experiments made with skin resistance and temperature. Based on our results, it was proven that these two skin characteristics are probably not suitable for liveness detection using this approach.
The Art of Natural Family Planning. (1976)

This self-education manual on natural family planning (NFP) is divided into 2 parts. Part 1 explains why a couple should use NFP and part 2 explains the of the sympto-thermal method of NFP. The primary method taught in this book is the full sympto-thermal method which married couples it is claimed can use at the 99% level of effectiveness to either avoid or postpone pregnancy. The method is also useful in helping couples achieve pregnancy even when their mutual fertility is marginal. Part 1 argues that couples should choose NFP because it is cost-effective promotes physical health does not have the side effects attributed to other birth control methods (pill IUD sterilization) and is always reversible. Some less tangible arguments include the getting in touch with your own body rhythms and increased self-awareness. Arguments centering around the morality of NFP are aired. The final argument for using NFP is that it will bring marital couples closer together because NFP is a process requiring mutual decision-making teaches a more spiritual satiation opens the lines of communications between couples and promotes nongenital ways of expressing affection. The how-to section discusses the signs of ovulation (changes in cervical mucus ovulation pain and temperature rise) guidelines for interpreting symptoms of ovulation (including discussions of cycle variations) surprise or unwanted pregnancies return of fertility after childbirth and how to put NFP into practice in your day-to-day life (including various testimonials from couples using NFP).
Pilot Trial of Biovance Collagen-Based Wound Covering for Diabetic Ulcers (2009)

Biovance helps decrease healing time for a population of patients with chronic nonhealing diabetic partial- or full-thickness foot ulcers. Randomized, controlled studies may be warranted.
Physisorption of nitric oxide, carbon monoxide, nitrogen, and oxygen by magnesium oxide powder (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhysisorption of nitric oxide, carbon monoxide, nitrogen, and oxygen by magnesium oxide powderShozo Furuyama, Hidemitsu Fujii, Moriyasu Kawamura, and Tetsuo MorimotoCite this: J. Phys. Chem. 1978, 82, 9, 1028–1032Publication Date (Print):May 1, 1978Publication History Published online1 May 2002Published inissue 1 May 1978https://pubs.acs.org/doi/10.1021/j100498a014https://doi.org/10.1021/j100498a014research-articleACS PublicationsRequest reuse permissionsArticle Views242Altmetric-Citations51LEARN 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 optionsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Taste‐Active Compounds in a Traditional Italian Food: ‘<i>Lampascioni</i>’ (2008)

Abstract Nature is a rich source of taste‐active compounds, in particular of plant origin, many of which have unusual tastes. Many of these are found in traditional food, where spontaneous plants are used as ingredients. Some taste‐active compounds were identified in the bulbs of Muscari comosum , a spontaneous plant belonging to the family of the Liliaceae, very common in the Mediterranean area, and used in traditional gastronomy (called ‘ lampascioni ’ in South Italy). The bulbs were extracted with a series of solvents of different polarity. The different fractions were submitted to a preliminary sensory evaluation, and the most interesting ones, characterized by a strong bitter taste and some chemestetic properties, were submitted to further purification and structural analysis. From the ethereal extract, several 3‐benzyl‐4‐chromanones and one stilbene derivative were isolated. Pure compounds were examined for their taste activity by means of sensory evaluation, and proved to be responsible for the characteristic taste of this food. Some of these compounds have been synthesized de novo to confirm their structure.
All-optical gain control of in-line erbium-doped fiber amplifiers for hybrid analog/digital WDM systems (1997)

Automatic gain control using an all-optical feedback loop in in-line erbium-doped fiber amplifiers (EDFA's) used in hybrid analog/digital wavelength division multiplexing (WDM) systems was studied. It is found that the signal level variation for the digital channels can be maintained within a range /spl les/3-dB between the presence and dropout of the analog channel when the narrowband feedback is centered at the amplified spontaneous emission (ASE) peak (/spl sim/1532 nm) with loop loss ranging between 13-22 dB. Robust transmission at 2.5 Gb/s without measurable power penalty was obtained for the digital channels when the EDFA was saturated by either the analog or the control lasing signal.
The role of surface conditions in nucleate boiling (1958)

Nucleation from a single cavity has been stuied indicating that cavity gemtry is aportant in two ways. The mouth diameter determines the superheat nmeded to initiate boiling and its shape determines its stability one boiling has begun. Contact angle is shown to be important in bubble nucleation primarity thrugh its effect on cavity stability. Contact angle measurements made on "clean" and paraffin coated stainIess steel murftces with water shcw that the contact angle varies between 20 and 110* for tenperatures from 20[degree] to 170[degree] C. On the basis of single cavity nucleation theory, it is proposed to characterie the gross nucleation properties of a given surface for all fnds under all conditions with a single group having the dmnions of length. Finally, it is shown experimentally that this characterization is adequate by boiling water, methmnol and ethanol different copper surfaces finished with 3/0 emry, and showing that the number of active centers per unit area is a function of this variable alone.
The 60- to 90-kDa parietal cell autoantigen associated with autoimmune gastritis is a beta subunit of the gastric H+/K(+)-ATPase (proton pump). (1990)

Autoantibodies in the sera of patients with pernicious anemia recognize, in addition to the alpha subunit of the gastric H+/(+)-ATPase, an abundant gastric microsomal glycoprotein of apparent Mr 60,000-90,000. Herein we have colocalized the glycoprotein and the alpha subunit of the gastric H+/K(+)-ATPase to the tubulovesicular membranes of the parietal cell by immunogold electron microscopy. Moreover, the glycoprotein and the alpha subunit were coimmunoprecipitated, and copurified by immunoaffinity chromatography, with an anti-glycoprotein monoclonal antibody. The pig glycoprotein was purified by chromatography on tomato lectin-Sepharose, and five tryptic peptides from the purified glycoprotein were partially sequenced. The complete amino acid sequence, deduced from the nucleotide sequence of overlapping cDNA clones, showed 33% similarity to the sequence of the beta subunit of the pig kidney Na+/K(+)-ATPase. We therefore propose that the 60- to 90-kDa glycoprotein autoantigen is the beta subunit of the gastric H+/K(+)-ATPase and that the alpha and beta subunits of the proton pump are major targets for autoimmunization in autoimmune gastritis.