gebhart/patrepeval huggingface dataset:
An 83-GHz High-Gain SiGe BiCMOS Power Amplifier Using Transmission-Line Current-Combining Technique (2013)

An 83-GHz two-stage cascode power amplifier (PA) implemented in a low-cost 200/180-GHz <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">fT</i> / <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">f</i> <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> 0.18-μm SiGe BiCMOS technology is presented. The power-combining technique based upon a low-loss two-way transmission-line current combiner has been employed that simultaneously addresses the gain requirement at millimeter wave while delivering a high linear output power, making it a potential contender for multigigabit/second point-to-point data links. The combiner efficiency and large-signal power bandwidth (BW) are improved by the compact output matching network synthesized and excellent amplitude/phase balance of the proposed current combiner, which also considers the reliability issues such as electromigration and built-in redundancy during power device failure. At 83 GHz, the PA achieves a measured saturated power (P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sat</sub> ) of 14.7 dBm, output-referred 1-dB compression point (OP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1dB</sub> ) of 12.5 dBm, peak power-added efficiency of 8.1%, and 1-dB large-signal power BW from 75 to 88 GHz. The measured peak power gain (S <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">21</sub> ) is 25 dB with a 3-dB small-signal BW from 76.8 to 86.4 GHz while consuming a total dc power of 348 mW from a 4-V supply. The overall chip area is 610 μm × 560 μm (0.34 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ).
Packet radio system (1975)

The Packet Radio System considered as a network is characterized by devices, terminals, repeaters and stations, linked together by broadcast radio channels.
Blood Pressure Response and Antibody Formation in Spontaneously-Hypertensive Rats and Normal Albino Rats after Immunization against Angiotensin II* (1972)

To assess the role of angiotensin II in spontaneously-hypertensive rats, the blood pressure response and the presence of antibodies determined serially by radioimmunoassay techniques after immunization with angiotensin II were studied. Despite the development of adequate antibodies in each of eleven rats, no rat had a significant reduction in blood pressure. As compared with normal albino rats immunized similarly, the antibody levels of the spontaneously-hypertensive rats exceeded that of the normal rats. The results suggest first that angiotensin is not an etiological factor in the hypertension of spontaneously-hypertensive rats, and second that there is a quantitative individual and species variation among rats in their ability to form angiotensin II antibody. Recent results of the blood pressure response to renin and angiotensin II inhibition in various models of experimental hypertension are discussed. (Endocrinology91: 1064, 1972)
Sensitive Detection of p53 Gene Mutations in Esophageal Endoscopic Biopsy Specimens by Cell Sorting Combined with Polymerase Chain Reaction Single‐strand Conformation Polymorphism Analysis (1992)

For the rapid and sensitive detection of p53 gene mutations in esophageal endoscopic biopsy specimens, we combined cell sorting with the polymerase chain reaction and single-strand conformation polymorphism (PCR-SSCP) analysis. Mutations in exons 5-8 of the p53 gene were investigated by PCR-SSCP analysis using 10(3) sorted nuclei obtained from each endoscopic biopsy specimen of 16 patients with esophageal cancer. DNAs extracted from their respective surgical specimens were investigated by a conventional method of PCR-SSCP analysis. Mutations in the biopsy specimens were detected in 6 of the 12 aneuploid tumors but in none of the 4 diploid tumors. After tumor cell enrichment by cell sorting, one mutation in exon 8 became apparent, which could not be detected from the surgical specimen by a conventional method of PCR-SSCP analysis. This method should improve the sensitivity of detecting p53 gene mutations, and provides additional information concerning the DNA ploidy pattern in the tumors.
Resolution of Racemates: Did You Say “Classical”? (1998)

A successful "family approach" is already being used in industry for large-scale enantiomeric resolutions. In this method, racemates are resolved by formation of salts with mixtures of three structurally related resolving agents instead of a single one. Although the physical chemistry behind this is still largely unexplored, successful resolution is more likely and resolution efficiency is often improved over that of classical resolution.
Computer mapping of brain-stem sensory centers in man (1976)

A computer program is described for use on-line with a two--stage stereotaxic technique in man. It has four capabilities. It transposes coordinates between a brain atlas and a stereotaxic frame, simultaneously adjusting for variations in individual brain dimensions. Corrections for electrode trajectories, and for any irregularities of placement of the stereotaxic frame in the head are also made. It plots an operative template that shows electrode trajectories and the sites from which physiological data are collected appropriately oriented upon a sagittal diagram of the brain. It graphically displays physiological data in the form of a Woolsey-type figurine chart that indicates threshold in milliamperes and, through the use of coded symbols, the quality of response and certain other data. It stores all this data in a tape library together with the locations of any lesions made. This makes it possible to replot any individual patient's operative data at any time. It also permits scanning of the stored protocols from all patients for any particular type of data either by itself or in combination with other data. This retrieved information is plotted on appropriate sagittal brain diagrams corrected for individual variations in brain size. Illustrations of the capabilities of the program are presented particularly with reference to the primary afferent pathways of the upper brain stem.
Specific Uncoupling of GRB2 from the Met Receptor (1996)

The biological effects of hepatocyte growth factor/scatter factor are mediated by autophosphorylation of its receptor, the Met tyrosine kinase, on two carboxyl-terminal tyrosines. These phosphotyrosines (Y1349VHVNATY1356VNV) are multifunctional docking sites for several effectors. Grb2, the adaptor for the Ras guanyl-nucleotide exchanger SOS, binds to Tyr1356 in the YVNV motif. By site-directed mutagenesis we either abrogated or duplicated the Grb2 consensus, without interfering with the other effectors. Loss of the link with Grb2 severely impaired transformation. The same mutation, however, had no effect on the "scattering" response, indicating that the level of signal which can be reached by Grb2-independent routes is permissive for motility. Duplication of the Grb2 binding site enhanced transformation and left motility unchanged. Thus, two Met-mediated biological responses, motility and growth, can be dissociated on the basis of their differential requirement for a direct link with Ras.
Role of Transforming Growth Factor β in Human Disease (2000)

In human tissues, normal homeostasis requires intricately balanced interactions between cells and the network of secreted proteins known as the extracellular matrix. These cooperative interactions involve numerous cytokines acting through specific cell-surface receptors. When the balance between the cells and the extracellular matrix is perturbed, disease can result. This is clearly evident in the interactions mediated by the cytokine transforming growth factor β (TGF-β).TGF-β is a member of a family of dimeric polypeptide growth factors that includes bone morphogenic proteins and activins. All of these growth factors share a cluster of conserved cysteine residues that form a common cysteine . . .
Aluminum Loading in Preterm Neonates Revisited (2010)

Preterm neonates receiving parenteral nutrition are at risk of aluminum (Al) overload because of the presence of Al as a contaminant in parenteral formulations. Despite US Food and Drug Administration regulation, commercial products continue to present Al contamination. To reassess Al exposure in the premature neonatal population, the present study evaluated the Al balance (intake vs urinary excretion) in a group of preterm neonates during the period in which they stayed in the intensive care unit (NICU) under total parenteral nutrition. For the 10 patients selected, daily infusion solutions (nutrition and medication) were collected and the level of Al contamination was measured. From the urine collected daily, an aliquot was taken for Al determination. Blood was also collected for Al determination on the first and last day in the NICU. The measurements were carried out by atomic absorption spectrometry. The difference between Al administered and excreted revealed that 56.2% +/- 22.7% of the Al intake was not eliminated. The mean serum Al levels from the first to the last day decreased from 41.2 +/- 23.3 to 23.5 +/- 11.2 microg/L. The resulting mean Al daily intake of the 10 patients was 15.2 +/- 8.0 microg x kg(-1) x day(-1). Because Al intake was higher than that excreted and Al in serum decreased to practically half during the period in the NICU (+/-7.3 days), some amount of Al deposition occurred. Moreover, premature neonates were receiving, on average, 3 times the amount of 5 microg x kg(-1) x day(-1), considered by the Food and Drug Administration as a safe limit.
Advanced glycosylation end-products in experimental murine diabetic nephropathy: effect of islet isografting and of aminoguanidine. (1989)

The effects of islet isografting and of aminoguanidine on the accumulation of advanced glycosylation end-products (AGE) in renal basement membranes were studied in Streptozotocin (STZ)-induced diabetes mellitus in female BALB/c mice. The characteristic autofluorescence of glycosylated collagen was used to quantitate AGE. We studied the effect of islet isografting using 3 groups of mice, sacrificed at age 13 to 15 months: group A, untreated diabetes (STZ 250 mg/kg intravenously at age 6 to 8 weeks); group B, untreated diabetes for 7 months, then successfully grafted with cultured islet cells; and group C, age-matched normal control animals. At sacrifice, AGE were measured in digests of renal basement membranes as collagen-linked fluorescence/unit of hydroxyproline. Group A animals had significantly greater renal basement membrane glycosylation than did the other 2 groups, (group A median 88.0 arbitrary units/mumol hydroxyproline, range 30.2 to 127.5; group B median 19.4, range 5.1 to 56.8; group C median 2.9 range 0-13.5; p = .001 A versus B). To study the effect of aminoguanidine, 4 groups of animals were used: group 1, untreated diabetics (STZ 250 mg/kg intravenously at age 6 to 8 weeks); group 2, diabetics treated with aminoguanidine 50 mg/kg intraperitoneally daily; group 3, age-matched control animals, and group 4, age-matched controls treated with aminoguanidine. At sacrifice after 7 months, AGE were measured in digests of renal basement membranes as collagen-linked fluorescence/unit of hydroxyproline. Aminoguanidine significantly attenuated the accumulation of AGE in diabetic mice (group 1 median 47.2 arbitrary units/mumol hydroxyproline, range 16.1 to 56.0; group 2 median 24.4, range 5.0 to 37.7; group 3 median 13.6, range 0 to 30.3; group 4 median 10.8, range 2.1 to 17.2; p less than 0.01, groups 1 versus 2). These results indicate that further basement membrane glycosylation is prevented by restoration of euglycemia by islet grafting after a significant duration of diabetes, and that aminoguanidine prevents AGE accumulation despite hyperglycemia.
Alar Controversy Mirrors Differences in Risk Perceptions (1989)

RETURN TO ISSUEPREVNewsNEXTAlar Controversy Mirrors Differences in Risk PerceptionsAvoiding future battles over chemicals as contaminants in food supply, such as that involving growth regulator Alar, will require bridging gap in risk communication among industry, government, and publicANN M. THAYERView Author Information C&EN Northeast News BureauCite this: Chem. Eng. News 1989, 67, 35, 7–14Publication Date (Print):August 28, 1989Publication History Published online10 November 2010Published inissue 28 August 1989https://pubs.acs.org/doi/10.1021/cen-v067n035.p007https://doi.org/10.1021/cen-v067n035.p007newsACS PublicationsCopyright © 1989 AMERICAN CHEMICAL SOCIETYArticle Views5Altmetric-Citations-LEARN 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 SUBJECTS:Crops,Food,Natural resources,Safety Get e-Alerts
Efficient haplotype block recognition of very long and dense genetic sequences (2014)

The MIG ++ enables to perform LD-based haplotype block recognition on genetic sequences of any length and density. In the new generation sequencing era, this can help identify haplotypes that carry rare variants of interest. The low computational requirements open the possibility to include the haplotype block structure into genome-wide association scans, downstream analyses, and visual interfaces for online genome browsers.
Reactivity and intersystem crossing of singlet methylene in solution (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReactivity and intersystem crossing of singlet methylene in solutionNicholas J. Turro, Yuan Cha, and Ian R. GouldCite this: J. Am. Chem. Soc. 1987, 109, 7, 2101–2107Publication Date (Print):April 1, 1987Publication History Published online1 May 2002Published inissue 1 April 1987https://pubs.acs.org/doi/10.1021/ja00241a030https://doi.org/10.1021/ja00241a030research-articleACS PublicationsRequest reuse permissionsArticle Views247Altmetric-Citations44LEARN 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
Sliding-Triboelectric Nanogenerators Based on In-Plane Charge-Separation Mechanism (2013)

Aiming at harvesting ambient mechanical energy for self-powered systems, triboelectric nanogenerators (TENGs) have been recently developed as a highly efficient, cost-effective and robust approach to generate electricity from mechanical movements and vibrations on the basis of the coupling between triboelectrification and electrostatic induction. However, all of the previously demonstrated TENGs are based on vertical separation of triboelectric-charged planes, which requires sophisticated device structures to ensure enough resilience for the charge separation, otherwise there is no output current. In this paper, we demonstrated a newly designed TENG based on an in-plane charge separation process using the relative sliding between two contacting surfaces. Using Polyamide 6,6 (Nylon) and polytetrafluoroethylene (PTFE) films with surface etched nanowires, the two polymers at the opposite ends of the triboelectric series, the newly invented TENG produces an open-circuit voltage up to ~1300 V and a short-circuit current density of 4.1 mA/m(2) with a peak power density of 5.3 W/m(2), which can be used as a direct power source for instantaneously driving hundreds of serially connected light-emitting diodes (LEDs). The working principle and the relationships between electrical outputs and the sliding motion are fully elaborated and systematically studied, providing a new mode of TENGs with diverse applications. Compared to the existing vertical-touching based TENGs, this planar-sliding TENG has a high efficiency, easy fabrication, and suitability for many types of mechanical triggering. Furthermore, with the relationship between the electrical output and the sliding motion being calibrated, the sliding-based TENG could potentially be used as a self-powered displacement/speed/acceleration sensor.
A parameter-based process for selecting high impedance fault detection techniques using decision making under incomplete knowledge (1990)

Using varying environmental parameters and nonadapting detection techniques, the authors propose a generic method for choosing the fault detection technique or techniques which are most appropriate for a given set of conditions. This result is achieved using a decision-making method under incomplete knowledge. The performance of each detection technique is derived under various conditions and environments with this method. The method is not yet complete because the performance outcome of all techniques is not fully defined. However, it provides a head start when attempting to optimize detection given consideration of a wide variety of techniques, parameters, and environmental parameters.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Kinetics of phloretin binding to phosphatidylcholine vesicle membranes. (1980)

The submillisecond kinetics for phloretin binding to unilamellar phosphatidylcholine (PC) vesicles was investigated using the temperature-jump technique. Spectrophotometric studies of the equilibrium binding performed at 328 nm demonstrated that phloretin binds to a single set of independent, equivalent sites on the vesicle with a dissociation constant of 8.0 microM and a lipid/site ratio of 4.0. The temperature of the phloretin-vesicle solution was jumped by 4 degrees C within 4 microseconds producing a monoexponential, concentration-dependent relaxation process with time constants in the 30--200-microseconds time range. An analysis of the concentration dependence of relaxation time constants at pH 7.30 and 24 degrees C yielded a binding rate constant of 2.7 X 10(8) M-1 s-1 and an unbinding constant of 2,900 s-1; approximately 66 percent of total binding sites are exposed at the outer vesicle surface. The value of the binding rate constant and three additional observations suggest that the binding kinetics are diffusion limited. The phloretin analogue, naringenin, which has a diffusion coefficient similar to phloretin yet a dissociation constant equal to 24 microM, bound to PC vesicle with the same rate constant as phloretin did. In addition, the phloretin-PC system was studied in buffers made one to six times more viscous than water by addition of sucrose or glycerol to the differ. The equilibrium affinity for phloretin binding to PC vesicles is independent of viscosity, yet the binding rate constant decreases with the expected dependence (kappa binding alpha 1/viscosity) for diffusion-limited processes. Thus, the binding rate constant is not altered by differences in binding affinity, yet depends upon the diffusion coefficient in buffer. Finally, studies of the pH dependence of the binding rate constant showed a dependence (kappa binding alpha [1 + 10pH-pK]) consistent with the diffusion-limited binding of a weak acid.
Metabolic products of Aspregillus terreus. VI. Metabolites of the strain IFO 8835. (3). The isolation and chemical structures of colorless metabolites. (1981)

Seven colorless metabolites related to asterriquinones and one colorless compound of another type were isolated from Aspergillus terreus IFO 8835, and their chemical structures were determined.
Design of Peptides with High Affinities for Heparin and Endothelial Cell Proteoglycans (2000)

Proteoglycan-binding peptides were designed based on consensus sequences in heparin-binding proteins: XBBXBX and XBBBXXBX, where X and B are hydropathic and basic residues, respectively. Initial peptide constructs included (AKKARA)(n) and (ARKKAAKA)(n) (n = 1-6). Affinity coelectrophoresis revealed that low M(r) peptides (600-1,300) had no affinities for low M(r) heparin, but higher M(r) peptides (2,000-3,500) exhibited significant affinities (K(d) congruent with 50-150 nM), which increased with peptide M(r). Affinity was strongest when sequence arrays were contiguous and alanines and arginines occupied hydropathic and basic positions, but inclusion of prolines was disruptive. A peptide including a single consensus sequence of the serglycin proteoglycan core protein bound heparin strongly (K(d) congruent with 200 nM), likely owing to dimerization through cysteine-cysteine linkages. Circular dichroism showed that high affinity heparin-binding peptides converted from a charged coil to an alpha-helix upon heparin addition, whereas weak heparin-binding peptides did not. Higher M(r) peptides exhibited high affinities for total endothelial cell proteoglycans (K(d) congruent with 300 nM), and approximately 4-fold weaker affinities for their free glycosaminoglycan chains. Thus, peptides including concatamers of heparin-binding consensus sequences may exhibit strong affinities for heparin and proteoglycans. Such peptides may be applicable in promoting cell-substratum adhesion or in the design of drugs targeted to proteoglycan-containing cell surfaces and extracellular matrices.