gebhart/patrepeval huggingface dataset:
Optical Properties of Photovoltaic Organic–Inorganic Lead Halide Perovskites (2015)

Over the last several years, organic-inorganic lead halide perovskites have rapidly emerged as a new photovoltaic contender. Although energy conversion efficiency above 20% has now been certified, improved understanding of the material properties contributing to these high performance levels may allow the progression to even higher efficiency, stable cells. The optical properties of these new materials are important not only to device design but also because of the insight they provide into less directly accessible properties, including energy-band structures, binding energies, and likely impact of excitons, as well as into absorption and inverse radiative recombination processes.
Bradykinin in the ascitic fluid of patients with liver cirrhosis (2001)

Bradykinin, a nonapeptide with vasodilatory and permeabilizing activity, is generated through the cleavage of high-Mr (‘high-molecular-weight’) kininogen by kallikrein, and its generation is facilitated by plasmin. In the ascitic fluid of patients with cirrhosis, there is massive cleavage of high-Mr kininogen and activation of fibrinolysis, but bradykinin has never been measured directly. In the ascitic fluid of 24 patients with cirrhosis, we measured bradykinin-(1-9)-nonapeptide levels by RIA after liquid-phase and subsequent HPLC extraction, and those of its catabolic product bradykininin-(1-5)-pentapeptide by ELISA after liquid-phase extraction. Cleaved high-Mr kininogen, activated factor XII and plasmin-antiplasmin complexes were measured in ascitic fluid and plasma. Plasma renin activity (PRA) was also determined. As a control, we also analysed plasma from 24 healthy subjects matched for sex and age with the patients. In the ascitic fluid from patients with cirrhosis, the median bradykinin-(1-9) concentration was 3.3fmol/ml (range 0.2-29.0fmol/ml), and the median bradykinin-(1-5) concentration was 210fmol/ml (range 58-7825 fmol/ml). The levels of bradykinin-(1-5) in ascitic fluid were higher in patients with refractory ascites [median 1091fmol/ml (range 58-7825fmol/ml)] than in patients with responsive ascites [134 fmol/ml (72-1084fmol/ml)] (P = 0.010). Ascitic fluid levels of bradykinin-(1-9) were not related to the severity of ascites. PRA was higher in patients with refractory ascites [23.0ngċh-1ċml-1 (7.9-80.0ngċh-1ċml-1)] than in patients with responsive ascites [6.9ngċh-1ċml-1 (0.9-29.4ngċh-1ċml-1)] (P = 0.002). In ascitic fluid, 48% (19-68%) of high-Mr kininogen was cleaved, and plasmin-antiplasmin complexes were more concentrated than in plasma (P = 0.0001). In conclusion, in the ascitic fluid of patients with cirrhosis, both bradykinin-(1-9) and bradykinin-(1-5) are present, with cleavage of high-Mr kininogen and activation of fibrinolysis. The highest levels of the long-lived metabolite bradykinin-(1-5) were found in the ascitic fluid of patients with refractory ascites and high PRA. Activation of the kinin system may therefore be involved in decompensating cirrhosis, but a cause-effect relationship remains to be established.
Selectivities in reactions of organolithium reagents with aryl bromides which bear proton-donating groups (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelectivities in reactions of organolithium reagents with aryl bromides which bear proton-donating groupsPeter Beak, Timothy J. Musick, Chao Liu, Thomas Cooper, and Donald J. GallagherCite this: J. Org. Chem. 1993, 58, 26, 7330–7335Publication Date (Print):December 1, 1993Publication History Published online1 May 2002Published inissue 1 December 1993https://pubs.acs.org/doi/10.1021/jo00078a007https://doi.org/10.1021/jo00078a007research-articleACS PublicationsRequest reuse permissionsArticle Views296Altmetric-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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
<i>PTCLab</i>: free and open-source software for calculating phase transformation crystallography (2016)

PTCLab ( Phase Transformation Crystallography Lab ) is free and open-source software to calculate the crystallographic features formed during a phase transformation, such as orientation relationship, interface orientation, interfacial structure etc . This program covers the crystallographic theories for both martensitic and diffusional transformation and allows users to represent the results in stereographic projection. The crystallographic models treated in PTCLab include the classical phenomenological theory of martensite crystallography (PTMC), the double shear version of PTMC, the invariant line model, O-lattice theory, the O-line model, the recently developed three-dimensional near coincidence site method, the edge-to-edge matching model and variant selection analysis. In addition, a number of basic crystallographic calculations for single or multiple crystal structures can be performed with the calculation pad. High-quality composite stereographic projection and electron diffraction patterns can be also obtained by the present application. PTCLab is written in Python, runnable cross platform, and is distributed at https://sourceforge.net/projects/tclab/.
The Origin of Damping in High-Strength Ferromagnetic Alloys (1953)

Abstract A theoretical analysis and test data are presented which explain the damping capacity of standard high-strength alloys in terms of the magnetostrictive effect. Conditions for obtaining maximum damping are described and the results of experiments are reported which provide a firm basis for the development of high-strength high-damping alloys.
Genome-wide identification of Saccharomyces cerevisiae genes required for tolerance to acetic acid (2010)

Approximately 490 of the 650 determinants of tolerance to acetic acid identified in this work are implicated, for the first time, in tolerance to this weak acid. These are novel candidate genes for genetic engineering to obtain more robust yeast strains against acetic acid toxicity. Among these genes there are number of transcription factors that are documented regulators of a large percentage of the genes found to exert protection against acetic acid thus being considered interesting targets for subsequent genetic engineering. The increase of potassium concentration in the growth medium was found to improve the expression of maximal tolerance to acetic acid, consistent with the idea that the adequate manipulation of nutrient concentration of industrial growth medium can be an interesting strategy to surpass the deleterious effects of this weak acid in yeast cells.
The rise of OLED displays (2016)

Periodic visitors to the TV section of large electronics stores are usually impressed by how display technology constantly improves. At each new visit, the screens are larger, thinner, brighter, and often cheaper than they were during the previous trip to the shop a year or two earlier. Visitors to a store today will see that more than two-thirds of TV screens on the market are now larger than 40 inches. They’ll notice that Samsung and a few other firms are pushing a technology called quantum dots that seems to enhance colors and brightness. At some point, a TV model promoted by LG might attract attention, but perhaps more for its higher price than the performance improvement it offers. Alone among its competitors, LG manufactures a line of TVs making use of organic light-emitting diode technology. Long the focus of research at academic and corporate labs worldwide, OLED displays are starting
IEEE-PES Standards Activities (1981)

Discusses the IEEE PES Society standards activities.
<title>Relationship between Fourier fringe analysis and the FFT</title> (1992)

The use of Fourier fringe analysis as a tool for surface characterization has been well documented. However, there remain several grey areas in the implementation of this technique as a practical tool. Principal among these is the catalog of errors associated with the backbone of the technique--the Fast Fourier Transform. These errors are well known, but their nature and form in this context are not fully understood. This paper gives a detailed review of these problems together with their impact on quantitative measurements and presents possible routes to their elimination and solution.
Fracture Acidizing: What Role Does Formation Softening Play in Production Response? (2008)

Summary Fracture acidizing of carbonates has yielded increases in production in many areas of the world, but depending on rock strength and reservoir closure pressure, this response may be lower than expected. Also, as a result of rock strength and closure pressure, production may decline at a higher rate than following a proppant fracture treatment. Laboratory results are presented describing the effect of various acid systems on the strength reduction of limestone and dolomite-formation rock samples. Formation samples were dry or saturated with 2-wt% potassium chloride brine before testing. Samples were exposed to neat, emulsified, gelled, and crosslinked 15-wt% hydrochloric acids (HCl) and each exhibited a differing effect on rock-strength reduction. In addition, production responses are presented and compared with regard to the type of acid system used for stimulation. On the basis of the results obtained, acid-system choices made a significant difference in the degree of rock softening of carbonates. Emulsified acid caused the least softening effect on limestone and dolomite cores. Softening effects were greater on limestone than on dolomite rocks. Production responses from emulsified-acid treatments were best.
Ultralow‐Threshold Laser Realized in Zinc Oxide (2009)

Lasing action is realized in a ZnO/GaN heterojunction by employing a MgO interlayer. The MgO layer can confine electrons in the ZnO layer, while holes can pass through the MgO layer and enter into the n-ZnO layer from the p-GaN layer. The threshold of the lasing action is as low as 0.8 mA..
Structure and ESCRT-III protein interactions of the MIT domain of human VPS4A (2005)

The VPS4 AAA ATPases function both in endosomal vesicle formation and in the budding of many enveloped RNA viruses, including HIV-1. VPS4 proteins act by binding and catalyzing release of the membrane-associated ESCRT-III protein lattice, thereby allowing multiple rounds of protein sorting and vesicle formation. Here, we report the solution structure of the N-terminal VPS4A microtubule interacting and transport (MIT) domain and demonstrate that the VPS4A MIT domain binds the C-terminal half of the ESCRT-III protein, CHMP1B (Kd = 20 +/- 13 microM). The MIT domain forms an asymmetric three-helix bundle that resembles the first three helices in a tetratricopeptide repeat (TPR) motif. Unusual interhelical interactions are mediated by a series of conserved aromatic residues that form coiled-coil interactions between the second two helices and also pack against the conserved alanines that interdigitate between the first two helices. Mutational analyses revealed that a conserved leucine residue (Leu-64) on the third helix that would normally bind the fourth helix in an extended TPR is used to bind CHMP1B, raising the possibility that ESCRT-III proteins may bind by completing the TPR motif.
Nucleotide sequence of chicken transforming growth factor-beta 1 (TGF-β 1) (1988)

Journal Article Nucleotide sequence of chicken transforming growth factor-beta 1 (TGF-β 1) Get access Sonia B. Jakowlew, Sonia B. Jakowlew * Laboratory of Chemoprevention, National Cancer InstituteBethesda, MD 20892, USA * To whom correspondence should be addressed Search for other works by this author on: Oxford Academic PubMed Google Scholar Pamela J. Dillard, Pamela J. Dillard Laboratory of Chemoprevention, National Cancer InstituteBethesda, MD 20892, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Michael B. Sporn, Michael B. Sporn Laboratory of Chemoprevention, National Cancer InstituteBethesda, MD 20892, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Anita B. Roberts Anita B. Roberts Laboratory of Chemoprevention, National Cancer InstituteBethesda, MD 20892, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar Nucleic Acids Research, Volume 16, Issue 17, 12 September 1988, Page 8730, https://doi.org/10.1093/nar/16.17.8730 Published: 12 September 1988 Article history Received: 13 July 1988 Published: 12 September 1988
Energy-aware communication and task scheduling for network-on-chip architectures under real-time constraints (2004)

In this paper, we present a novel energy-aware scheduling (EAS) algorithm which statically schedules both communication transactions and computation tasks onto heterogeneous network-on-chip (NoC) architectures under real-time constraints. Our algorithm automatically assigns tasks onto different processing elements and then schedules their execution. At the same time, the algorithm also takes into consideration the exact communication delay by scheduling communication transactions in parallel. As the main contribution, we first formulate the problem of concurrent communication and task scheduling for heterogeneous NoC architectures and then propose an efficient heuristic to solve it. Experimental results show that significant energy savings can be achieved by using our energy-aware scheduler while meeting the specified performance constraints. For instance, for a complex multimedia application, 44% energy savings have been observed, on average, compared to the schedules generated by a standard earliest-deadline-first scheduler.
A parallel processing scheme for tree-structured image generation system (2003)

A parallel ray tracing scheme has been implemented on a loosely coupled multimicrocomputer system. Improvements are made by extending the architecture from a star structure to a hierarchical tree structure. This makes it possible to generate animated images at higher speed. The authors outline a hierarchical tree-structured image-generation system and discuss the parallel processing mechanisms of data transfer and hierarchical load distribution schemes. Problems with the tree-structured system are pointed out, and remedies are examined (area redistribution, and adaptive subdivision). Experiments are carried out to evaluate the performance of the tree-structured system in image generation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Dynamics and structures of DNA: Long‐range effects of a 16 base‐pair (CG)<sub>8</sub> sequence on secondary structure (1993)

The effects of inserting 16 base pair (bp) of alternating CG [(CG)8] near the middle of a much longer restriction fragment (1097 bp) are investigated by measuring various properties that are sensitive to secondary and tertiary structure. Results for this fragment are compared with those for a control fragment (1089 bp) with the identical sequence except at the insert. Another fragment (1382 bp), which contains a 296-bp extension at the 5'-end of the 1089-bp control fragment, is also used as a secondary control in some experiments. When the 1097-bp (CG)8 insert fragment is compared with the control fragments in 0.1 M NaCl buffer, the (CG)8 insert is found to induce disproportionately large relative changes in the molar ellipticity at 273 nm ([theta]273), the torsion constant (alpha) measured by fluorescence polarization anisotropy, the optical melting profile, and the susceptibility to S1 nuclease. Estimates of the minimum distance over which the (CG)8 insert alters the secondary structure range from 330 to 550 bp. With increasing NaCl concentration, the 1097-bp insert fragment undergoes a structural transition between 2.0 and 2.5 M that is manifested in the apparent diffusion coefficient (Dplat) from dynamic light scattering at large scattering vector. This transition, which is not exhibited by the control DNAs, is presumed to involve formation of Z-helix at the insert. However, the observed decrease in (Dplat) is attributed to an increase in bending rigidity, which perforce must be globally distributed far beyond the (CG)8 insert per se. In 4.25 M NaCl (but not in 0.1 M NaCl), the addition of 1 ethidium dye per 300 bp induces an extensive structural transition in the 1097 bp (CG)8 insert fragment. This transition, which also is not exhibited by the control DNAs, significantly decreases the bending rigidity, doubles [theta]273, and takes place on a time scale of a few days. Removal of ethidium and salt by dialysis vs 0.1 M NaCl buffer restores the original properties of the 1097-bp (CG)8 insert fragment. The present results are consistent with a (fluctuating, long-range) description of the secondary structure in which a given short sequence transiently fluctuates among two or more distinct secondary structures that extend over much larger domains of variable position and size, and whose relative stabilities depend on distant as well as close-lying base pairs.
Cutting edge: a dominant negative form of TNF-alpha converting enzyme inhibits proTNF and TNFRII secretion. (1999)

TNF-alpha converting enzyme (TACE) is the protease responsible for processing proTNF from the 26-kDa membrane-anchored precursor to the secreted 17-kDa TNF-alpha. We show here that a deletion mutant of TACE (dTACE), lacking the pro and catalytic domains of the protease, acts as a dominant negative for proTNF processing in transfected HEK293 cells. We used the same system to test the effect of dTACE on TNFRII processing. Overexpression of dTACE with TNFRII resulted in >80% inhibition of TNFRII shedding. Although significant inhibition of TNF-alpha and TNFRII shedding was achieved with dTACE, we could not detect a cell surface accumulation of the noncleaved substrates above that observed in the absence of dTACE. Our results suggest that TNFRII is a substrate for TACE, and that dTACE is capable of interfering with the function of endogenous TACE, either by binding and sequestering TACE substrates via the disintegrin domain, transmembrane domain, or cytoplasmic tail, or by some other mechanism that has yet to be determined.
Design and analysis of a cooperative medium access scheme for wireless mesh networks (2004)

This paper presents the detailed design and performance analysis of MACA-P, a RTS/CTS based MAC protocol, that enables simultaneous transmissions in wireless mesh networks. The IEEE 802.11 DCF MAC prohibits any parallel transmission in the neighborhood of either a sender or a receiver (of an ongoing transmission). MACA-P is a set of enhancements to the 802.11 MAC that allows parallel transmissions in situations when two neighboring nodes are either both receivers or transmitters, but a receiver and a transmitter are not neighbors. The performance of MACA-P in terms of system throughput is obtained through a simulation of the protocol using ns and is compared with the 802,11 RTS/CTS MAC. Experiments with the base MACA-P protocol reveal the need for certain enhancements, especially to avoid the drawbacks associated with attempts at parallel transmissions in scenarios where such parallelism is not feasible. Studies with the enhanced MACA-P protocol also demonstrate how significant performance gains in wireless mesh network performance may be realized if the radio transceiver behavior is modified in tandem with the MAC protocol.
Deposition of plasma-polymerized acetylene by an intense pulsed RF plasma source (1990)

An inductively coupled, intense, pulsed RF plasma source deposited plasma-polymerized acetylene at a rate of 127 AA per discharge. The potassium bromide substrate was located 18-cm downstream from the RF coil. A puff valve admitted parent acetylene gas just before the transient RF current was applied. Fourier transform infrared (FTIR) spectra showed that carbon-to-carbon double bonds were formed. Scanning-electron-microscope images showed that the film thickness after 79 discharges was 1 mu m. A photodiode showed substantial light emission for about 30 mu s during each discharge.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A Focused Asymmetric Metal–Insulator–Metal Tunneling Diode: Fabrication, DC Characteristics and RF Rectification Analysis (2011)

Asymmetric thin-film metal-insulator-metal (MIM) tunneling diodes have been demonstrated using the geometric field enhancement (GFE) technique in a Ni/NiO/Ni structure. The GFE technique provides several benefits: generating asymmetric tunneling currents, lowering tunneling resistance, increasing nonlinearity, enhancing the effective ac signal amplitude, and improving zero-bias rectifying performance. The GFE technique can be merged with a dissimilar electrode method and use surface plamon resonances for further performance improvement. In this paper, we disclose techniques for fully exploiting all these advantages. Detailed descriptions of process flows are provided. Performance improvements are experimentally verified by measuring the static current-voltage and dynamic (6.4 GHz) response of the developed Ni/NiO/Ni tunnel diodes.
The urinary catheter as a bronchial blocker (1983)

Two cases are described in which problems with double lumen bronchial tubes occurred during thoracic surgery. A urinary catheter inserted down one lumen of each of the tubes enabled one lung anaesthesia to be continued without disturbing the surgery. This technique should be considered before abandoning one lung anaesthesia in those few cases where double lumen tubes fail to function as desired.
Performance Evaluation of the Delayed-DCF Scheme in Wireless LANs (2013)

This paper evaluates the performance of a variant of IEEE 802.11 DCF (we call it the delayed-DCF scheme). In the delayed-DCF scheme, before transmitting a packet, each node first waits for a deterministic delay, and then enters the normal procedure of the legacy DCF. The delayed-DCF scheme adopts a mixed-type contention resolution method: the deterministic delay postpones the time that nodes contend for channel and its counter counts down without the influence of the channel status, while the legacy backoff time resolves collision when nodes contends for channel and its counter can be adaptively adjusted by the contention intensity of the channel. We find via simulation that there exists an optimal deterministic delay, which can minimize the mean and standard deviation of the MAC access delay while maximizing the system throughput. This good feature enables the delayed-DCF scheme to be very applicable to the delay-variance-sensitive applications such as voice over WLANs.