gebhart/patrepeval huggingface dataset:
Some reactions of triphenylmethyl compounds with boron fluoride (1967)

Triphenylmethyl derivatives, Ph 3 CX, where X = F, Cl, OH, or OCH3, react with 2 or more moles of boron fluoride to form Ph 3 CB 2 F 7 . Reactions take place rapidly and completely at low temperatures, except in the case of X = OCH 3 , where cleavage of the ether requires about 1 h at −30 °C. When X = Cl the other product is [Formula: see text]; for OH and OCH 3 the products are B(OH) 3 and B(OCH 3 ) 3 ·2BF 3 . The [Formula: see text] ion appears to be more stable than the [Formula: see text] or [Formula: see text] ions.
ADAPTIVE PICKING OF REFRACTED FIRST ARRIVALS<sup>1</sup> (1991)

A bstract Static correction computations require knowledge of the refracted traveltimes. Zero‐phase wavelet sources cannot be picked reliably when incoherent picking techniques are used. Assuming a complex convolutional model for Vibroseis, a coherent picking technique based on the matched filter is described. In order to match the filter to the first arrival wavelet an adaptive algorithm is used. This allows the filter to change both with shot and offset so that all the properties of matched filtering such as improvement of S/N and resolution can be exploited. Incoherent picking is used before coherent picking to improve the convergence of adaptive picking.
A Flexible 500 MHz to 3.6 GHz Wireless Receiver with Configurable DT FIR and IIR Filter Embedded in a 7b 21 MS/s SAR ADC (2012)

A flexible, software-configurable wireless receiver is implemented in 65 nm CMOS. The receive chain consists of wideband LNA and mixer, baseband amplifiers, and a 7-bit 21 MS/s filtering SAR ADC. This filtering ADC embeds a highly-integrated and configurable DT FIR/IIR filter to replace dedicated filtering stages. The tap length and coefficients of the embedded FIR filter are configurable from 16 to 64 taps and 0 to 6 units, respectively. Interleaving of the SAR and DT filter sampling processes in the ADC maximizes the conversion rate and facilitates IIR filtering. The prototype receiver supports several standards and bands. In packet tests, the prototype exceeds the sensitivity and jammer resistance requirements of both the 915 MHz and 2450 MHz bands of IEEE 802.15.4 while consuming 4.0 mW and 5.5 mW, respectively. The receiver is also demonstrated with the DSSS specification of IEEE 802.11.
Quantitative metrics of social response for autism diagnosis (2006)

Social robots recognize and respond to human social cues with appropriate behaviors. The capabilities used to build social robots can be uniquely applied to assist in the diagnosis and treatment of autism, a pervasive developmental disorder which results in selective impairment of social abilities. This paper outlines some of the ways in which social robots can provide unique perspectives to address critical problems in diagnosing autism. We provide preliminary data and observations on how this result can be achieved based on three years of immersion in a clinical research group that performs diagnostic evaluations of more than 130 children per year.
Iron Oxide-Based Catalyst for Catalytic Cracking of Heavy Oil (2018)

This chapter describes an iron oxide catalyst containing Zr and Al for production of light hydrocarbons by catalytic cracking of petroleum residual oil in a steam atmosphere. The catalyst was hematite structure and useful for decomposition and desulfurization of residual oil. After lattice oxygen of iron oxide reacted with heavy oil fraction of residual oil, oxygen species generated from steam were supplied to iron oxide lattice and reacts with heavy oil fraction, producing light hydrocarbons and carbon dioxide. When the oxygen species were generated from steam, hydrogen species were simultaneously generated from steam. The hydrogen species were transferred to light hydrocarbons, hydrogen sulfide, and residue deposited on the catalyst. Supplies of the hydrogen species to light hydrocarbons suppressed alkene generation. Generation of hydrogen sulfide indicated decomposition of sulfur compounds of residual oil. The sulfur concentration of product oil decreased compared to the concentration of residual oil. Some oxygen species could be transferred to sulfur dioxide. Accordingly, hydrogenation and oxidation by the hydrogen and oxygen species derived from steam provided the decomposition and desulfurization of residual oil with the iron oxide-based catalyst in a steam atmosphere.
Automated generic operating system installation and maintenance (2000)

Single-dose azithromycin is as effective as a 6-week course of topical tetracycline ointment in the treatment of active trachoma. The findings may help establish high compliance in treating trachoma and could contribute to the control of trachoma worldwide.
Relation of weight gain and weight loss on subsequent diabetes risk in overweight adults (2000)

Weight gain was associated with substantially increased risk of diabetes among overweight adults, and even modest weight loss was associated with significantly reduced diabetes risk. Minor weight reductions may have major beneficial effects on subsequent diabetes risk in overweight adults at high risk of developing diabetes.
WLAN evolution from HIPERLAN type 2 to MEDIAN (2003)

The HIPERLAN type 2 system currently in the final standardisation process in ETSI BRAN is expected to operate in the 5.15-5.35 GHz or 5.47-5.725 GHz or 5.725-5.925 GHz frequency range while the MEDIAN system to be standardised in the near future is expected to work at least in the frequency band from 61.0 to 61.5 GHz allocated to industrial, scientific and medical applications (ISM). Both systems are based on an orthogonal frequency division modulation (OFDM) physical layer scheme and will support quality of service requests for ATM as well as for IP-based networks. Cost-efficient terminal development and broad market acceptance can be supported by designing systems in a compatible and evolutionary way. A renewed MEDIAN system design is presented here, based on experience made in the ACTS project AC006 MEDIAN considering the evolutionary approach regarding recent HIPERLAN type 2/IEEE 802.11a harmonised standardisation actions.
A truncated form of CK<i>β</i>8‐1 is a potent agonist for human formyl peptide‐receptor‐like 1 receptor (2004)

1. Human formyl peptide-receptor-like-1 (FPRL-1) is a promiscuous G protein-coupled receptor (GPCR), and belongs to a chemoattractant receptor family protein. This receptor has been reported to interact with various host-derived peptides and lipids involved in inflammatory responses. We described here, a novel role for FPRL-1 as a high-affinity beta-chemokine receptor for an N-terminally truncated form of the CKbeta8 (CCL23/MPIF-1) splice variant CKbeta8-1 (22-137 aa). 2. RT-PCR analysis of mRNA derived from human tissues and cells revealed a predominant expression of FPRL-1 in inflammatory cells, particularly in neutrophils. 3. Intracellular calcium mobilisation assay, used as screening tool, in recombinant Chinese hamster ovary (CHO-K1) and human embryonic kidney (HEK293s) cells coexpressing FPRL-1 and Galpha(16), demonstrated FPRL-1 is a functional high-affinity receptor for CKbeta8-1 (46-137 aa, sCKbeta8-1), with pEC(50) values of 9.13 and 8.85, respectively. 4. The FPRL-1 activation in CHO-K1 cells is mediated by Galpha(i)/Galpha(o) proteins, as assessed by pertussis toxin sensitivity and inhibition of forskolin-induced cyclic AMP accumulation. 5. Binding experiments were performed with a radio-iodinated synthetic peptide, [(125-)I]-WKYMVm, a known potent FPRL-1 agonist. CHO-K1 cell membranes expressing FPRL-1 bound [(125-)I]-WKYMVm with a K(d) value of 9.34. Many known FPRL-1 agonists were tested and sCKbeta8-1 was the most effective nonsynthetic ligand in displacing the radiolabelled agonist, with a pIC(50) of 7.97. 6. The functional significance of sCKbeta8-1 interaction with FPRL-1 was further demonstrated by the activation of polymorphonuclear leukocytes (PMNs) calcium mobilisation and chemotaxis. These interactions were shown to be via FPRL-1 by specific blockade of PMNs activation in the presence of an FPRL-1 antibody.
Assistive techniques for precise touch interaction in handheld augmented reality environments (2012)

Recent advances in mobile computing and augmented reality (AR) technology have lead to popularization of mobile AR applications. Touch screen interfaces are common in mobile devices, and are also widely used in AR applications running on mobile devices, such as smartphones. However, due to unsteady camera view movement in handheld AR environment, it is hard to carry out precise interactions, such as drawing, especially when tracing physical objects. In this paper, we investigate two types of interaction techniques, Freeze-Set-Go and Snap-To-Feature, that help users to perform more accurate touch screen based AR interactions. The two techniques are compared in a user experiment with a task of tracing physical objects, which can be encountered when making annotation on or modeling physical objects within the AR scene. The results from the experiment show that a combination of these two makes a significant difference in accuracy and usability of touch screen based AR interaction.
Progestogens for endometriosis: forward to the past (2003)

We performed a MEDLINE and EMBASE search to identify all studies published in the last decade in the English language literature on the use of progestogens for the treatment of endometriosis. Our aim was to clarify the biological rationale for treatment and define the drugs that can be used with their doses, routes of administration, efficacy and tolerability. Progestogens may prevent implantation and growth of regurgitated endometrium inhibiting expression of matrix metalloproteinases and angiogenesis, and they have several anti-inflammatory in-vitro and in-vivo effects that may reduce the inflammatory state generated by the metabolic activity of the ectopic endometrium, and the consequent immune response. Oral contraceptives increase the abnormally low apoptotic activity of the endometrium of women with endometriosis. Moreover, anovulation, decidualization, amenorrhoea and the establishment of a steady estrogen-progestogen milieu contribute to disease quiescence. Progestogens are effective in the control of pain symptoms in approximately three out of four women with endometriosis. Their effect does not seem to be inferior to that of other drugs used for the disease. Different compounds can be administered by the oral, intramuscular, subcutaneous, intravaginal or intrauterine route, each with specific advantages or disadvantages. Medical treatment plays a role in the therapeutic strategy when administered over a prolonged period of time. Given their good tolerability, minor metabolic effects and low cost, progestogens must therefore be considered drugs of choice and are currently the only safe and economic alternative to surgery. However, their contraceptive effectiveness limits their use to women who do not wish to have children in the short term.
Antihyperglycemic effects of M16209, a novel aldose reductase inhibitor, in normal and diabetic rats (1995)

The effect of a single oral administration of M16209 (1-(3-bromobenzo[b]furan-2-yl-sulfonyl)hydantoin), a novel aldose reductase inhibitor, on serum glucose was investigated. In normal rats, M16209 (100 mg/kg) had a weak hypoglycemic effect but markedly stimulated the disappearance of serum glucose in intravenous glucose tolerance tests. In diabetic rats, M16209 (100 mg/kg) significantly suppressed the hyperglycemia of streptozotocin-induced, mildly diabetic rats and stimulated serum glucose disappearance in neonatally streptozotocin-induced, non-insulin-dependent diabetes mellitus (NIDDM) rats in glucose tolerance tests. Additionally, M16209 augmented insulin secretion in glucose-loaded, normal and NIDDM rats and restored the reduced serum insulin in streptozotocin-induced, mildly diabetic rats. M16209, however, showed no hypoglycemic effect in severely diabetic rats. In contrast, gliclazide, a sulfonylurea, showed a much more potent hypoglycemic effect in normal rats than in mildly diabetic rats. These results suggest that M16209 suppresses hypoglycemia through augmentation of glucose-stimulated insulin secretion. The antihyperglycemic activity of M16209, combined with its potent aldose reductase inhibiting activity, is expected to be beneficial in the treatment of diabetic complications.
Rapid measurement of sphingolipids from <i>Arabidopsis thaliana</i> by reversed‐phase high‐performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry (2007)

Changes in sphingolipids have been associated with profound effects in cell fate and development in both plants and animals. Sphingolipids as a group consist of a large number of different compound classes of which numerous individual species may vary in response to environmental stimuli to affect cellular responses. The ability to measure all sphingolipids simultaneously is, therefore, essential to an understanding of the biochemical regulation of sphingolipid metabolism and signaling molecules derived from it. In the model plant Arabidopsis thaliana, the major sphingolipid classes are glycosylinositolphosphoceramides, glucosylceramides, hydroxyceramides and ceramides. Other minor but potentially important sphingolipids are free long-chain bases and their phosphorylated derivates. By using a single solvent system with reversed-phase high-performance liquid chromatography coupled to electrospray ionization tandem mass spectrometry detection we have been able to separate and measure 168 sphingolipids from a crude sample. This greatly speeds up and simplifies the analysis of plant sphingolipids and should pave the way for a better understanding of their role in plant performance.
Nonorthogonal Joint Diagonalization Algorithm Based on Trigonometric Parameterization (2007)

The joint diagonalization technique is an important type of method for blind source separation. In this paper, a new approach is presented to joint diagonalization for a set of symmetric matrices with a general (and not necessarily orthogonal) matrix. The approach performs joint diagonalization via a series of symmetric eigen decompositions, including merits of simplicity, effectiveness, and computational efficiency. Simulation results demonstrate the potential improvement of the performance in the context of blind source separation.
Inhibition of Leishmania donovani promastigote internalization into murine macrophages by chemically defined parasite glycoconjugate ligands (1989)

Leishmania donovani, the agent of human visceral leishmaniasis, is an intracellular parasite that must be recognized and internalized by host macrophages to complete its biological cycle. In a search for possible ligands for macrophage surface receptors, glycoconjugates were obtained from Leishmania promastigotes by aqueous, phenol-aqueous, and alkaline extraction. A fucose-mannose glycoproteic ligand, a lipopeptidephosphoglycan, and a phosphate mannogalactan ligand were purified from promastigotes and analyzed for their chemical contents, with special attention to their glycidic moieties. Sugars that were identified as components of these glycoconjugates were tested for their capacity to inhibit promastigote internalization by BALB/c peritoneal macrophages in vitro. Neutral hexoses showed little inhibitory activity; fucose, charged monosaccharides, and a mannose polymer showed the highest activity. Two of the glycoconjugates (fucose-mannose glycoproteic ligand and phosphate mannogalactan ligand) purified from promastigotes were potent inhibitors of internalization, 75% inhibition being obtained at concentrations of 6 to 10 micrograms/ml. The simultaneous presence of both ligands in low concentrations yielded an increase in inhibitory activity above that found for each ligand alone, indicating that promastigotes may use at least two receptor sites for penetration into macrophages. These ligands are specific inhibitors of L. donovani promastigote phagocytosis, since 10 micrograms of each ligand per ml interfered neither with internalization of yeast cells nor with phagocytosis of Leishmania adleri promastigotes.
A Visual Tele-operation System for the Humanoid Robot BHR-02 (2006)

This paper presents a method to reconstruct the virtual scene of the humanoid robot teleoperation to overcome the problem of the poor vision images feedback. A virtual robot interface is built to render the data of the real robot. It has the same DOF set and the same size scale as the real robot. The interface can render the multiple real-time feedback data from the robot. In the data-fusion module an algorithm is adopted to determine the position and attitude of the robot body. Some experiments are done to confirm the effectiveness of the virtual scene
Cutting Edge: Dynamic Expression of Id3 Defines the Stepwise Differentiation of Tissue-Resident Regulatory T Cells (2018)

Foxp3<sup>+</sup> regulatory T (T<sub>R</sub>) cells are phenotypically and functionally diverse and broadly distributed in lymphoid and nonlymphoid tissues. However, the pathways guiding the differentiation of tissue-resident T<sub>R</sub> cell populations have not been well defined. By regulating E-protein function, Id3 controls the differentiation of CD8<sup>+</sup> effector T cells and is essential for T<sub>R</sub> cell maintenance and function. We show that dynamic expression of Id3 helps define three distinct mouse T<sub>R</sub> cell populations: Id3<sup>+</sup>CD62L<sup>hi</sup>CD44<sup>lo</sup> central T<sub>R</sub> cells, Id3<sup>+</sup>CD62L<sup>lo</sup>CD44<sup>hi</sup> effector T<sub>R</sub> (eT<sub>R</sub>) cells, and Id3<sup>-</sup> eT<sub>R</sub> cells. Adoptive transfer experiments and transcriptome analyses support a stepwise model of differentiation from Id3<sup>+</sup> central T<sub>R</sub> to Id3<sup>+</sup> eT<sub>R</sub> to Id3<sup>-</sup> eT<sub>R</sub> cells. Furthermore, Id3<sup>-</sup> eT<sub>R</sub> cells have high expression of functional inhibitory markers and a transcriptional signature of tissue-resident T<sub>R</sub> cells. Accordingly, Id3<sup>-</sup> eT<sub>R</sub> cells are highly enriched in nonlymphoid organs but virtually absent from blood and lymph. Thus, we propose that tissue-resident T<sub>R</sub> cells develop in a multistep process associated with Id3 downregulation.
Upconversion and Anti-Stokes Processes with f and d Ions in Solids (2003)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUpconversion and Anti-Stokes Processes with f and d Ions in SolidsFrançois AuzelView Author Information GOTR, UMR 7574-CNRS, 1, Place A-Briand, 92195 Meudon Cedex, France Cite this: Chem. Rev. 2004, 104, 1, 139–174Publication Date (Web):November 18, 2003Publication History Received25 February 2003Published online18 November 2003Published inissue 1 January 2004https://pubs.acs.org/doi/10.1021/cr020357ghttps://doi.org/10.1021/cr020357gresearch-articleACS PublicationsCopyright © 2004 American Chemical SocietyRequest reuse permissionsArticle Views32334Altmetric-Citations4309LEARN 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 SUBJECTS:Energy,Energy transfer,Ions,Lasers,Luminescence Get e-Alerts
Analytical characteristics of a commercial ICP orthogonal acceleration time-of-flight mass spectrometer (ICP-TOFMS) (2000)

Analytical data illustrating the typical response characteristics of a commercial inductively coupled plasma orthogonal acceleration time-of-flight mass spectrometer (Optimass8000 ICP-oa-TOFMS, GBC Scientific Equipment Pty Ltd., Australia) are presented. With optimum instrument response tuned at mid-mass (103Rh), limits of detection for a suite of elements representative of m/z 9–238 were estimated to be typically 1 ppt; background counts across the mass range averaged 0.5 Hz; sensitivity was 7 MHz per µg ml−1 (Rh); resolution (FWHM) ranged from 500 (7Li) to 2200 (238U); long-term drift over 700 min was 0.7% h−1; abundance sensitivity was 2.8 × 10−6 (low mass side) and 7.4 × 10−5 (high mass side); mass bias ranged from 10% per u at 24Mg to <1% per u at m/z > 80 and isotope ratio precision was demonstrated to be limited by counting statistics when the detector was operated in the pulse counting mode. Matrix effects, while relatively insignificant at 30 ppm NaCl and reaching 60–80% suppression of response at 3500 ppm, had no influence on the measured resolution, mass calibration or isotope ratio accuracy. The instrument faithfully recorded transient signals arising from flow injection sample introduction, from which isotope ratio information free of time skew could be generated.
Microbial Community Structure and Dynamics of Dark Fire-Cured Tobacco Fermentation (2006)

The Italian Toscano cigar production includes a fermentation step that starts when dark fire-cured tobacco leaves are moistened and mixed with ca. 20% prefermented tobacco to form a 500-kg bulk. The dynamics of the process, lasting ca. 18 days, has never been investigated in detail, and limited information is available on microbiota involved. Here we show that Toscano fermentation is invariably associated with the following: (i) an increase in temperature, pH, and total microbial population; (ii) a decrease in reducing sugars, citric and malic acids, and nitrate content; and (iii) an increase in oxalic acid, nitrite, and tobacco-specific nitrosamine content. The microbial community structure and dynamics were investigated by culture-based and culture-independent approaches, including denaturing gradient gel electrophoresis and single-strand conformational polymorphism. Results demonstrate that fermentation is assisted by a complex microbial community, changing in structure and composition during the process. During the early phase, the moderately acidic and mesophilic environment supports the rapid growth of a yeast population predominated by Debaryomyces hansenii. At this stage, Staphylococcaceae (Jeotgalicoccus and Staphylococcus) and Lactobacillales (Aerococcus, Lactobacillus, and Weissella) are the most commonly detected bacteria. When temperature and pH increase, endospore-forming low-G+C content gram-positive bacilli (Bacillus spp.) become evident. This leads to a further pH increase and promotes growth of moderately halotolerant and alkaliphilic Actinomycetales (Corynebacterium and Yania) during the late phase. To postulate a functional role for individual microbial species assisting the fermentation process, a preliminary physiological and biochemical characterization of representative isolates was performed.