gebhart/patrepeval huggingface dataset:
A rapid technique for synthesis of metallic nanoparticles for surface enhanced Raman spectroscopy (2013)

Incubator‐shaker method was used as a rapid technique to fabricate an efficient surface enhanced Raman scattering (SERS) substrate by combination of zero valent nanostructures and carbon fiber, which shows dramatic Raman enhancement of nitroaromatic molecule. The fabricated Ag nanoparticle on carbon‐fiber substrate (Ag–C) was used as an efficient SERS substrate to detect the adsorbed 2, 4‐dinitrotoluene molecules with a detection limit of 50 ppm. In advent, our developed SERS substrates could have great potential in detecting other nitro‐aromatic based‐explosive materials, such as 2, 4, 6‐trinitrotoluene molecules. Copyright © 2013 John Wiley &amp; Sons, Ltd.
Time transfer capabilities in the DTM transmission system (2014)

This article describes the enhancement of a commercial network system to include network wide time-transfer capability to meet customer needs for GPS independent timing of broadcast transmitters. The Dynamic synchronous Transfer Mode (DTM) transmission system is a network technology based on a 8 kHz Time Division Multiplex (TDM) structure, providing the basis for predictable and reliable transport and switching. With the adaptation of various native signals, it has found use in broadcast networks for both contribution and distribution networks. This article describe how the commercial DTM system was enhanced to include a time-transfer capability within the existing product range in order to support GPS independent transmission network for critical national broadcast networks operating DVB-T SFN transmissions.
Major ampullate spidroins from Euprosthenops australis : multiplicity at protein, mRNA and gene levels (2007)

Spider dragline silk possesses extraordinary mechanical properties. It consists of large fibrous proteins called spidroins that display modular structures. It is known to consist of two proteins: the major ampullate spidroin (MaSp) 1 and MaSp2. This study analyses MaSp sequences from the nursery-web spider Euprosthenops australis. We have identified a previously uncharacterized MaSp2 sequence and a new MaSp-like spidroin, which display distinct homogenous submotifs within their respective Gly-rich repeats. Furthermore, a group of MaSp1 cDNA clones show unexpected heterogeneity. Genomic PCR identified several MaSp1 gene variants within individual spiders, which suggests the presence of a gene cluster in E. australis. Finally, the evolution of spidroin genes is discussed in relation to phylogenetic analysis of nonrepetitive C-terminal domains from diverse species.
Analysis and Defensive Tools for Social-Engineering Attacks on Computer Systems (2006)

The weakest link in an information-security chain is often the user because people can be manipulated. Attacking computer systems with information gained from social interactions is one form of social engineering (K. Mitnick, et al. 2002). It can be much easier to do than targeting the complex technological protections of systems (J. McDermott, Social engineering - the weakest link in information security). In an effort to formalize social engineering for cyberspace, we are building models of trust and attack. Models help in understanding the bewildering number of different tactics that can be employed. Social engineering attacks can be complex with multiple ploys and targets; our models function as subroutines that are called multiple times to accomplish attack goals in a coordinated plan. Models enable us to infer good countermeasures to social engineering
Photodissociation of TEMPO-modified peptides: new approaches to radical-directed dissociation of biomolecules (2014)

Radical-directed dissociation of gas phase ions is emerging as a powerful and complementary alternative to traditional tandem mass spectrometric techniques for biomolecular structural analysis. Previous studies have identified that coupling of 2-[(2,2,6,6-tetramethylpiperidin-1-oxyl)methyl]benzoic acid (TEMPO-Bz) to the N-terminus of a peptide introduces a labile oxygen-carbon bond that can be selectively activated upon collisional activation to produce a radical ion. Here we demonstrate that structurally-defined peptide radical ions can also be generated upon UV laser photodissociation of the same TEMPO-Bz derivatives in a linear ion-trap mass spectrometer. When subjected to further mass spectrometric analyses, the radical ions formed by a single laser pulse undergo identical dissociations as those formed by collisional activation of the same precursor ion, and can thus be used to derive molecular structure. Mapping the initial radical formation process as a function of photon energy by photodissociation action spectroscopy reveals that photoproduct formation is selective but occurs only in modest yield across the wavelength range (300-220 nm), with the photoproduct yield maximised between 235 and 225 nm. Based on the analysis of a set of model compounds, structural modifications to the TEMPO-Bz derivative are suggested to optimise radical photoproduct yield. Future development of such probes offers the advantage of increased sensitivity and selectivity for radical-directed dissociation.
Identification of a mitochondrial external NADPH dehydrogenase by overexpression in transgenic Nicotiana sylvestris (2004)

The plant respiratory chain contains a complex setup of non-energy conserving NAD(P)H dehydrogenases, the physiological consequences of which are highly unclear. An expression construct for the potato (Solanum tuberosum L., cv. Desiree) ndb1 gene, a homologue of bacterial and fungal type II NAD(P)H dehydrogenases, was introduced into Nicotiana sylvestris. Transgenic lines with high transcript and protein levels for St-NDB1 had up to threefold increased activity of external NADPH dehydrogenase in isolated mitochondria as compared to the wild type (WT). In two lines, the external NADPH dehydrogenase activity was instead 10-fold decreased, indicating that the corresponding N. sylvestris gene had been suppressed. Activities of external and internal rotenone-insensitive NADH dehydrogenases were unchanged in the transgenic lines. The results demonstrate that the St-ndb1 encodes an external dehydrogenase specific for NADPH and dependent on calcium for activity. Transgenic lines overexpressing St-ndb1 had specifically increased protein levels for alternative oxidase and uncoupling protein, as compared to the WT and one co-suppressing line. This indicates cross-talk in the expressional control, or metabolic conditions influencing it, for the different categories of energy-dissipating proteins that bypass oxidative phosphorylation. The potential effects of external NADPH oxidation on other cellular processes are discussed.
The Interest Rate Risk of Fannie Mae and Freddie Mac - eScholarship (2002)

Institute of University of I u Business and California at Economic Research Berkeley FISHER CENTER FOR REAL ESTATE AND URBAN ECONOMICS WORKING PAPER SERIES WORKING PAPER NO. 02-283 THE INTEREST RATE RISK OF F ANNIE MAE AND FREDDIE MAC BY These papers are preliminary _ in nature: their purpose is to DWIQ Jaffee stimulate discussion and comment. Therefore, they are not to be cited or quoted in any publication without the express permission of the author. WALTER A. HAAS SCHOOL OF BUSINESS
Evaluation of α‐SiC Sintering Using Statistical Methods (1985)

The effect of time and temperature on the density and strength of α‐Sic was studied and mathematically modeled using a central composite experimental design. A sintering temperature of 2150°C for 1.7 h maximized the flexural strength and densification values. However, temperatures above 2200°C promoted abnormal grain growth, with resulting appreciable decreases in strength. Flexural strength increased exponentially with increasing density for specimens with densities &lt;92% of theoretical.
Preparation, Crystallographic, Spectroscopic and Magnetic Characterization of Low‐Valency Nitridometalates Li2[(Li1‐xMx)N] with M: Cu, Ni. (2003)

Abstract For Abstract see ChemInform Abstract in Full Text.
Making the connection (2015)

Whether you sit back and observe, or sometimes provide some sensitive encouragement, it is important that all practitioners understand how important friendships are to children's learning, wellbeing and development.
High-performance 1.06-μm selectively oxidized vertical-cavity surface-emitting lasers with InGaAs-GaAsP strain-compensated quantum wells (1997)

We present the first room-temperature continuous-wave operation of high-performance 1.06-μm selectively oxidized vertical-cavity surface-emitting lasers (VCSEL's). The lasers contain strain-compensated InGaAs-GaAsP quantum wells (QW's) in the active region grown by metalorganic vapor phase epitaxy. The threshold current is 190 μA for a 2.5×2.5 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> device, and the threshold voltage is as low as 1.255 V for a 6×6 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> device. Lasing at a wavelength as long as 1.1 μm was also achieved. We discuss the wavelength limit for lasers using the strain-compensated QW's on GaAs substrates.
Pathology of hepatitis C (1994)

The basic morphological patterns of acute or chronic viral hepatitides are very similar, irrespective of the causative hepatitis viruses A, B, C, D or E. In addition, however, acute and chronic hepatitis C shows characteristic, although not pathognomonic histological changes. These consist of lymphoid aggregates in portal tracts, sometimes with germinal centers, damage of bile duct epithelium, and micro- or macrovesicular steatosis of hepatocytes. A combination of two of these three characteristic alterations is seen in over half of the patients with chronic hepatitis C and is helpful in the histological diagnosis of the disease.
Crossflow air stripping and catalytic oxidation of chlorinated hydrocarbons from groundwater (1995)

Abstract This paper describes air stripping of chlorinated hydrocarbon contaminants from groundwater in a crossflow air stripping tower and destruction of the organic compounds by catalytic oxidation. Crossflow stripping has an advantage over conventional countercurrent stripping. In typical stripping operations, the mass transfer coefficient is insensitive to the velocity of the gas stream. The crossflow stripping tower is a geometry that increases the cross section of gas flow while making minimal disturbances to the liquid flow, allowing high gas‐liquid ratios without flooding. By increasing the flow cross section for the gas stream, pressure drop (and thus fan power) can be reduced significantly. A field demonstration of the crossflow column was performed at a contaminated groundwater site. The groundwater was pumped out and sent to two 17‐ft‐high (5.2‐m) towers in a parallel arrangement. One tower was a crossflow air stripper and the other a conventional countercurrent design. The performance of the two was compared. The key organic species targeted was dichloroethane, which has a low Henry's law constant. Three different baffle configurations were tested in the crossflow tower. The results of this demonstration were used to develop design criteria for crossflow air strippers to be used for destruction of halogenated hydrocarbons.
Comparison of Metabolic Equivalent with the 6-Minute Walk Test as a Measure of Exercise Capacity and Outcome Predictor in Pulmonary Arterial Hypertension: Results from the Intravenous Treprostinil Study (2006)

Restricted accessAbstractFirst published March 2006Comparison of Metabolic Equivalent with the 6-Minute Walk Test as a Measure of Exercise Capacity and Outcome Predictor in Pulmonary Arterial Hypertension: Results from the Intravenous Treprostinil StudyM. Gomberg-Maitland, D. Huo, […], V.F. Tapson, V.V. McLaughlin, R.L. Benza, and R.J. Barst+3-3View all authors and affiliationsVolume 54, Issue 2_supplhttps://doi.org/10.1177/108155890605402s60
6TiSCH Autonomous Scheduling Function (ASF) (2018)

This document defines a Scheduling Function called ASF: the 6TiSCH
Autonomous Scheduling Function. With ASF, nodes maintain their TSCH
schedule based on local neighborhood knowledge, without any signaling
after association. Hashes of the nodes' MAC address are used to
deterministically derive the [slotOffset,channelOffset] location of
cells in the TSCH schedule. Different traffic types (e.g. TSCH EB, RPL
DIO, UDP etc.) are assigned to distinct slotframes, for isolation and
flexible dimensioning. This approach provides over-provisioned
schedules with low maintenance, in pursuit for simplicity rather than
optimality.
Preparation and properties of inclusion compounds of transition-metal complexes of cycloocta-1,5-diene and norbornadiene with cyclodextrins (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and properties of inclusion compounds of transition-metal complexes of cycloocta-1,5-diene and norbornadiene with cyclodextrinsAkira Harada, Shyoko Yamamoto, and Shigetoshi TakahashiCite this: Organometallics 1989, 8, 11, 2560–2563Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Published inissue 1 November 1989https://doi.org/10.1021/om00113a007RIGHTS & PERMISSIONSArticle Views236Altmetric-Citations28LEARN 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 InReddit PDF (468 KB) Get e-Alerts Get e-Alerts
Carbon Networks Based on Benzocyclynes. 6. Synthesis of Graphyne Substructures via Directed Alkyne Metathesis (2007)

Intramolecular ring closing alkyne metathesis afforded the graphyne biscyclyne (3) in high macrocyclization yield and good overall yield. This methodology also furnished the tris[12]cyclyne 4, which contains the longest linear diphenylacetylene conjugation pathway for any graphyne substructure based on the tribenzo[12]cyclyne core.
Porosity Dependence of Compression and Lattice Rigidity in Metal–Organic Framework Series (2019)

Porous materials, including metal-organic frameworks (MOFs), are known to undergo structural changes when subjected to applied hydrostatic pressures that are both fundamentally interesting and practically relevant. With the rich structural diversity of MOFs, the development of design rules to better understand and enhance the mechanical stability of MOFs is of paramount importance. In this work, the compressibilities of seven MOFs belonging to two topological families (representing the most comprehensive study of this type to date) were evaluated using in situ synchrotron X-ray powder diffraction of samples within a diamond anvil cell. The judicious selection of these materials, representing widely studied classes of MOFs, provides broadly applicable insight into the rigidity and compression of hybrid materials. An analysis of these data reveals that the bulk modulus depends on several structural parameters (e.g., void fraction and linker length). Furthermore, we find that lattice distortions play a major role in the compression of MOFs. This study is an important step toward developing a predictive model of the structural variables that dictate the compressibility of porous materials.
QED-vacuum confinement of inelastic quantum scattering at optical frequencies: A new perspective in Raman spectroscopy (1993)

The spontaneous Raman effect in ${\mathrm{C}}_{6}$${\mathrm{H}}_{6}$ is investigated in the QED-vacuum confinement condition in the Casimir topology of an optical microcavity as a prototype inelastic quantum-scattering process at optical frequencies. The confinement determines a dramatic enhancement (over a factor of ${10}^{3}$), inhibition, and directional effects on the scattering intensity. Apart from its relevance in atomic and molecular spectroscopy, the work establishes a new perspective in the field of QED scattering involving quantum particles with any energy.
Polymers grafted to a convex surface (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymers grafted to a convex surfaceR. C. Ball, J. F. Marko, S. T. Milner, and T. A. WittenCite this: Macromolecules 1991, 24, 3, 693–703Publication Date (Print):February 1, 1991Publication History Published online1 May 2002Published inissue 1 February 1991https://pubs.acs.org/doi/10.1021/ma00003a011https://doi.org/10.1021/ma00003a011research-articleACS PublicationsRequest reuse permissionsArticle Views585Altmetric-Citations151LEARN 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
Effect of oral administration of L-lysine on conjunctivitis caused by feline herpesvirus in cats (2002)

Oral administration of 500 mg of lysine to cats was well tolerated and resulted in less severe manifestations of conjunctivitis caused by FHV-1, compared with cats that received placebo. Oral administration of lysine may be helpful in early treatment for FHV-1 infection by lessening the severity of disease.
The function of guard cells does not require an intact array of cortical microtubules (1998)

The development of stomatal guard cells is known to require cortical microtubules; however, it is not known if microtubules are also required by mature guard cells for stomatal function. To study the role of microtubules in guard cell function, epidermal peels of Vicia faba were subjected to conditions known to open or close stomata in the presence or absence of microtubule inhibitors. To verify the action of the inhibitors, microtubules in appropriately treated epidermal peels were localized by cryofixation followed by freeze substitution and embedding in butyl-methyl methacrylate. Mature guard cells had a radial array of microtubules, focused toward the thick cell wall of the pore, and the appearance of this array was the same for stomata remaining closed in darkness or induced to open by light. Treatment of epidermal peels with 1 mM colchicine for 1 h depolymerized nearly all cortical microtubules. Measurements of stomatal aperture showed that neither 1 µM colchicine nor 20 µM taxol affected any of the responses tested: remaining closed in the dark, opening in response to light or fusicoccin, and closing in response to calcium and darkness. We conclude that intact microtubule arrays are not invariably required for guard cell function.
2016 미국 대선과 미국사회의 균열 (2016)

본 연구는 미국 유권자의 사회경제적·인구학적 배경에 초점을 맞추어 2016미국 대선을 분석한다. 정당-유권자 선거연합을 구성하는 유권자들의 사회경제적·인구학적 배경을 중심으로 2016년 대선에서 유권자 균열 및 정치적 양극화가 어떠한 양상으로 나타났는지를 살펴보았다. 분석 결과, 2016년 미국대선에서는 기존의 이념을 기반으로 한 정파적 균열이 중심축을 형성한 가운데 다양한 사회경제적·인구학적 균열이 중첩적으로 나타났다. 이러한 균열을 유권자 동원에 활용한 트럼프의 캠페인 전략을 통해 미국 사회의 양극화는 더욱 심화되었다. 이념, 정당, 인종, 연령, 성별, 교육, 소득, 종교 등 다양한 요인이 균열을 추동하는 가운데, 특히 인종문제는 사회경제적 차원을 넘어 백인유권자들의 정체성 문제와 관련되어 있어 향후 미국 정치의 핵심적인 이슈가 될 것이라고 예상된다. 더불어 지리적으로 고착화된 지역적 균열이 정파성 및 사회경제적 균열을 바탕으로 더욱 강화되어 가고 있다는 사실에서도 향후 미국 정치의 양극화가 더욱 심화될 것임을 예측할 수 있다.
Synthesis and biological evaluation of 5-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methylene]oxazoles, -thiazoles, and -imidazoles: novel dual 5-lipoxygenase and cyclooxygenase inhibitors with antiinflammatory activity (1994)

A variety of benzylideneoxazoles, -thiazoles, and -imidazoles derived from 2,6-di-tert-butylphenol were prepared and evaluated as dual inhibitors of 5-lipoxygenase and cyclooxygenase in rat basophilic leukemia (RBL-1) cells. The target compounds exhibit varying degrees of selectivity toward the two enzymes. Several compounds are orally active in the rat carageenan footpad edema (CFE) and mycobacterium footpad edema (MFE) antiinflammatory models. Structure-activity relationships are discussed. From this work, (Z)-5-[[3,5-bis(1,1-dimethylethyl)-4- hydroxyphenyl]-methylene]-2-imino-4-thiazolidinone methanesulfonate salt (CI-1004) was identified as a potent dual inhibitor of 5-lipoxygenase (IC50 = 0.77 microM) and cyclooxygenase (IC50 = 0.39 microM), with oral activity (ID40 = 0.6 mg/kg) in the rat MFE model of inflammation.
Synergetic effects of dodecylamine-functionalized graphene oxide nanoparticles on antifouling and antibacterial properties of polysulfone ultrafiltration membranes (2021)

The potential use of dodecylamine-functionalized graphene oxide (rGO-DDA) nanoparticles as an antifoulant and antibacterial nanofiller was investigated. GO and rGO-DDA were analyzed using Raman spectroscopy, FTIR, SEM, TEM, and TGA that all confirmed the successful functionalization of GO structure. Polysulfone (PSF) ultrafiltration membranes incorporating varied loadings of GO and rGO-DDA were then fabricated via phase inversion approach. All membranes were characterized in terms of chemical structure, morphology, hydrophilicity, porosity and mean pore size. Cross-section SEM images showed the distribution of GO and rGO-DDA between the pores and on the polymer walls. AFM results demonstrated that GO addition increased the roughness of membrane; while with rGO-DDA addition the surface became smoother. Pristine PSF and rGO-DDA based membranes exhibited similar hydrophilicity, while GO-based membranes exhibited higher hydrophilicity as revealed by contact angle measurements. Permeability, separation and antifouling experiments were performed in a cross-flow membrane setup and showed that flux decreases with the increase in GO and rGO-DDA concentration. rGO-DDA membranes showed higher antifouling and antibacterial performance compared to the pristine PSF and GO membranes. Neat PSF exhibited 65.4 % flux recovery ratio (FRR) against BSA that was increased to 86.9 % and 89.1 % with GO-0.1 and rGO-DDA-0.1, respectively. Against HA, FRR was improved from 87.8 % for neat PSF to 95.6 % and 99.3 % with GO-0.1 and rGO-DDA-0.1, respectively. Additionally, rGO-DDA membrane exhibited higher bacteriostatis rate (83.6 %) against H. aquamarina than GO membrane (62.9 %). Moreover, rGO-DDA nanoparticles exhibited excellent dispersibility in several solvents making them promising nanofillers for various membranes with high antifouling and antibacterial performance.