gebhart/patrepeval huggingface dataset:
Numerical Simulations of Light Bullets, Using The Full Vector, Time Dependent, Nonlinear Maxwell Equations (1995)

This paper will present results in computational nonlinear optics. An algorithm will be described that solves the full vector nonlinear Maxwell's equations exactly without the approximations that we currently made. Present methods solve a reduced scalar wave equation, namely the nonlinear Schrodinger equation, and neglect the optical carrier. Also, results will be shown of calculations of 2-D electromagnetic nonlinear waves computed by directly integrating in time the nonlinear vector Maxwell's equations. The results will include simulations of 'light bullet' like pulses. Here diffraction and dispersion will be counteracted by nonlinear effects. The time integration efficiently implements linear and nonlinear convolutions for the electric polarization, and can take into account such quantum effects as Karr and Raman interactions. The present approach is robust and should permit modeling 2-D and 3-D optical soliton propagation, scattering, and switching directly from the full-vector Maxwell's equations.
Methyl bromide fumigation to control non-microbial discolorations in western hemlock and red alder. (1994)

Methyl bromide fumigation was investigated as a means to control discolorations in red alder and western hemlock. Freshly sawn red alder and western hemlock logs were fumigated in a commercial pest control facility. Discolorations were monitored in the logs and in lumber produced from both fumigated and control logs over 2 weeks. Methyl bromide fumigation prevented discolorations in red alder under drying conditions but discoloration of western hemlock was not prevented in freshly felled log sections or in lumber with existing endstain
Higher order electro-magneto-elastic free vibration analysis of piezomagnetic nano panel (2021)

Abstract This paper investigates electro-magneto-elastic free vibration responses of piezomagnetic cylindrical nano panel subjected to electro-magneto-mechanical loads based on third-order theory. Third-order shell theory is used for description of the displacement field. The zero transverse shear strains are obtained using the third-order displacement field. Hamilton’s principle is employed to obtain the governing equations of motion. The nano panel is subjected to a coupling of magnetic and electric loads, including a linear function along with the thickness direction and a 2D function along with the axial and circumferential directions. To account the effect of nanoscale in governing equations, the Eringen nonlocal elasticity theory is used. The numerical results are obtained to investigate the impact of significant parameters such as axial and circumferential mode numbers, the nanoscale parameter, applied electromagnetic potentials, and length-to-radius ratio. It is concluded that an increase in initial electric potential and a decrease in magnetic potential lead to an increase in natural frequencies of the nano panel.
Brillouin-based distributed temperature and strain sensor using the Landau-Placzek Ratio (2009)

A distributed optical fiber temperature and strain sensing system using the Landau-Placzek Ratio (LPR) has been introduced. By applying LPR to simultaneous measurement system of temperature and strain based on Brillouin optical time domain reflectometer (BOTDR), the infulence of fiber attenuation, splice loss, and microbending loss on measurement result could be eliminated. This paper has presented a simultaneous measurement system of temperature and strain based on LPR. The light source configuration and method to improve polarization-induced fading used in the system are discussed. At last, the measurement accuracy and its effect factors are also been analyzed.
Synthesis of alkoxybenzenes and alkoxyvinylbenzenes and their chemosterilizing and toxic activity on planococcus citri (Hom., Pseudococcidae) (1987)

Dialkoxy-, trialkoxy-, dialkoxyvinyl-, and trialkoxyvinylbenzenes were investigated for chemosterilant and toxic acitivity on Planococcus citri. The alkoxyvinylbenzenes were toxic; they reduced the egg production of the test insect. Dialkoxyvinylbenzenes decreased the number of eggs laid by females, but the chemosterilizing activity of the trialkoxy derivatives was not strong. Larvae treated with 0.1% 1, 5-diisopropoxy-4-vinylbenzene (6), 17% survived. The surviving females were strongly retarded in their growth (which was 56% of normal) and their egg production was reduced by 70%. Some of the small adults (43% of the surviving females) failed to form an ovisac and did not lay eggs at all.
Outcomes Improving for Cardiovascular Diseases (2014)

Have recent efforts to improve care for people with cardiovascular disease been successful? To find out, investigators examined rates of hospitalization, mortality, and readmission during the past decade in a national cohort of more than 30 million Medicare beneficiaries, focusing on patients with unstable angina, myocardial infarction (MI), heart failure, and ischemic stroke.

Hospitalization rates declined for all four conditions across all age, gender, and racial groups, with some variation …
Low‐Threshold Distributed‐Feedback Lasers Based on Pyrene‐Cored Starburst Molecules with 1,3,6,8‐Attached Oligo(9,9‐Dialkylfluorene) Arms (2009)

Abstract Here, a detailed characterization of the optical gain properties of sky‐blue‐light‐emitting pyrene‐cored 9,9‐dialkylfluorene starbursts is reported; it is shown that these materials possess encouragingly low laser thresholds and relatively high thermal and environmental stability. The materials exhibit high solid‐state photoluminescence (PL) quantum efficiencies (&gt;90%) and near‐single‐exponential PL decay transients with excited state lifetimes of ∼1.4 ns. The thin‐film slab waveguide amplified spontaneous emission (ASE)‐measured net gain reaches 75–78 cm −1 . The ASE threshold energy is found to remain unaffected by heating at temperatures up to 130 °C, 40 to 50 °C above T g . The ASE remained observable for annealing temperatures up to 170 or 200 °C. 1D distributed feedback lasers with 75% fill factor and 320 nm period show optical pumping thresholds down to 38–65 Wcm −2 , laser slope efficiencies up to 3.9%, and wavelength tuning ranges of ∼40 nm around 471–512 nm. In addition, these lasers have relatively long operational lifetimes, with N 1/2 ≥ 1.1 × 10 5 pulses for unencapsulated devices operated at ten times threshold in air.
Hepatitis delta antigen. Antigenic structure and humoral immune response. (1989)

Abstract Hepatitis delta virus (HDV) is a small RNA virus that is dependent on helper functions provided by hepatitis B virus. The hepatitis delta Ag (HDAg) is the only protein known to be made from the viral genome, from an ORF with a coding capacity of 214 amino acids. The immunogenic epitopes of HDAg and the immune response to it were mapped by the use of synthetic peptides, antipeptide antibodies, and human mAb. Antipeptide sera covering approximately 60% of the linear sequence reacted with liver-derived HDAg. Antisera from HDV-infected humans, chimpanzees, and woodchucks reacted with from 2 to 13 of 15 peptides. The epitopes of two human anti-HD mAb were mapped to overlapping but distinct epitopes in the region around residues 106-123. Sera from infected humans, chimpanzees, and woodchucks were also tested by competition with the mAb. Use of the peptides and antipeptide sera defined one region in the sequence (residues 52-93) which is immunodominant in the immune response to HDAg. Reactivity of both peptides and antipeptide antibodies was very broad, covering most or all of the linear sequence. Competition assays also provided information on conformational epitopes, as well as the sequential epitopes defined by direct assays. The peptides and antipeptide antibodies should be useful in new assay development, in dissecting the anti-HD response in terms of chronic vs self-limited infection, and in studying the role of anti-HD in infection and recovery.
Regioselective Silyl/Acetate Exchange of Disaccharides Yields Advanced Glycosyl Donor and Acceptor Precursors (2013)

Glycoconjugates are composed of carbohydrate building blocks linked together in a multitude of ways giving rise to diverse biological functions. Carbohydrates are especially difficult to synthetically manipulate because of the similar reactivity of their numerous and largely equivalent hydroxyl groups. Hence, methodologies for both the efficient protection and selective modification of carbohydrate alcohols are considered important synthetic tools in organic chemistry. When per-O-TMS protected mono- or disaccharides in a mixture of pyridine and acetic anhydride are treated with acetic acid, regioselective exchange of silicon for acetate protecting groups occurs. Acid concentration, thermal conditions, and microwave assistance mediate the silyl/acetate exchange reaction. Regiocontrol is achieved by limiting the equivalents of acetic acid, and microwave irradiation hastens the process. We coined the term Regioselective Silyl Exchange Technology (ReSET) to describe this process, which essentially sets the protecting groups anew. To demonstrate the scope of the reaction, the conditions were applied to lactose, melibiose, cellobiose, and trehalose. ReSET provided rapid access to a wide range of orthogonally protected disaccharides that would otherwise require multiple synthetic steps to acquire. The resulting bifunctional molecules are poised to serve as modular building blocks for more complex glycoconjugates.
Quasiparticle properties of a coupled two-dimensional electron-phonon system (1989)

We calculate quasiparticle properties of a weakly polar two-dimensional electron gas by taking into account both electron-electron Coulomb and electron--optical-phonon Fr\"ohlich interactions. Electronic self-energy is calculated exactly in the leading order of the total effective dynamical interaction. The total effective dynamical interaction is obtained within the random-phase approximation (RPA) by starting from the total bare interaction, which includes both Coulomb and Fr\"ohlich interactions and then by screening it with all the bubble diagrams. Our theory thus treats Coulomb and Fr\"ohlich interactions on an equal footing and includes all effects (within the RPA) of Fermi statistics, Landau damping, plasmon-phonon mode coupling, phonon self-energy correction, and dynamical screening. We include finite-thickness effects in actual GaAs-based semiconductor microstructures by considering electron- and phonon- (``slab modes'') confinement effects. Some of our interesting results are (1) Coulomb and Fr\"ohlich interaction effects are nonmultiplicative, and the actual many-body correction for an electron gas is substantially different from the one-polaron result; (2) there are interesting and observable plasmon- and phonon-induced satellite structures in the low-energy side of the electronic spectral function and the density of states; (3) at low electron densities phonons tend to screen Coulomb interaction, whereas at large electron densities electrons screen the Fr\"ohlich interactions; (4) our calculated effective mass and inelastic-scattering length are consistent with the available experimental results.
Modeling &#x00026; simulation to study the performance of hybrid free space optical/rf military communication networks (2008)

Data transmission using fiber optics offers significant improvements in network throughput rates. Although, optical fiber can transfer data at the rate of 1.6 Terabit/s per fiber - using Dense Wavelength Division Multiplexing (DWDM) technologies - the need for pre-laid infrastructure (optical fiber, network elements and significant network management) makes it more suitable for intercontinental backbones. Although Free Space Optical Communications (FSO) provides significant advantages for communication at the extremities of the network, the requirements of cloud-free line-of-sight (CFLOS) and perfect weather conditions prevent FSO alone from being a reliable military communications system. Hence, a hybrid system with FSO as the primary choice and RF as a fallback option has been proposed. The paper contains problem definition, details of the modeling and simulation (M&S) design and implementation, testing, verification and results of simple test cases.
EFEITO DA QUALIDADE DA MADEIRA NO DESEMPENHO DA POLPAÇÃO <i>KRAFT</i> (2014)

http://dx.doi.org/10.5902/1980509815724O objetivo do estudo foi avaliar o efeito da qualidade de madeiras de eucalipto no desempenho da polpação kraft sob duas diferentes condições de polpação e em dois níveis de deslignificação, baseando-se no rendimento, alvura, viscosidade e índice k/kappa corrigido das polpas produzidas. As madeiras de eucalipto (A, B e C), foram analisadas quanto às suas propriedades físico-químicas (densidades básica e aparente, teor de ligninas insolúvel e solúvel, teor de extrativos, cinzas e cinzas insolúveis em ácido clorídrico) e utilizadas para a produção de polpa celulósica por meio do cozimento kraft modificado, utilizando duas condições de polpação, sendo elas: Condição I (PI) - álcali efetivo de 16,5%, sulfidez de 30% e temperatura de cozimento de 155ºC; e Condição II (PII) - álcali efetivo de 17,5%, sulfidez de 32% e temperatura de cozimento de 147ºC. Ambos os cozimentos foram realizados buscando-se no número kappa de 15,5 ± 0,5 e de 18,0 ± 0,5. Foram avaliados os seguintes parâmetros de polpação e propriedades das polpas produzidas: fator H, rendimento depurado, viscosidade, alvura, conteúdo de ácidos hexenurônicos e o índice k/kappa corrigido. A madeira A, que apresentou menores teores de extrativos e lignina em sua constituição, bem como menores densidades básica e aparente quando comparada com as madeiras B e C, apresentou os melhores resultados para os parâmetros de cozimento avaliados, com destaque para a polpa produzida pela condição de cozimento PII com o número kappa de (18,0 ± 0,5), que apresentou maior rendimento, alvura e viscosidade dentre todas as polpas produzidas. Polpas produzidas com maior número kappa apresentam menores índices k/kappa corrigidos.
Reduction of Cone-Beam CT scan time without compromising the accuracy of the image registration in IGRT (2010)

Twenty nine head and neck (H&N) and 11 stereotactic lung patients were included in the study. The mean of the registration deviation did not differ significantly from zero independently of the number of projections included in the reconstruction. Except for the smallest subset of reconstructions (10% and 25% of the original projection for the lung and H&N patients, respectively) the standard deviation of the registration differences was constant. The standard deviations were approximately 0.1 mm and 0.2 mm for the H&N and lung group, respectively. Based on these results an in-house developed solution, able to reduce the Cone-Beam CT scan time, has been implemented clinically.
Fabrication of Translucent Sintered Aluminum Oxynitride Spinel (AlON) (1989)

The single-phase region of AlON, a spinel type solid solution in the system Al2O3-AlN, has been determined. AlON was synthesized from solid phase reactions between Al2O3 and AlN powder in several reaction vessels. The reaction vessel of porous Al2O3 with AlN coating was suitable for obtaining pure AlON. The single-phase region of AlON was from 28 to 32mol% AlN at 1700°C and from 20 to 34mol% AlN at 1800°C. The lattice parameters of AlON increased from 7.926 to 7.946Å with increasing AlN content. Y2O3-powder was used as a sintering aid to obtain translucent AlON from synthesized AlON powder at low temperature. For 1wt% Y2O3 addition, the translucent AlON was obtained at 1800°C, and its relative density and flexural strength were 99% and 250MPa, respectively.
NINE-ROD CRITICAL HEAT FLUX INVESTIGATION, STEAM-WATER AT 600 TO 1400 PSIA. Final Summary Report. (1968)

inch. A correlation of the results is given for a certain range of conditions. The following modifications of the basic test geometry were also tested: eccentric rod, simulated spacer, sandblasted rod, and rough liner. The eccentric rod and sandblasted rod decreased the burnout heat flux, while the simulated space had no effect, and the flux for the rough liner is greater than for the smooth liner. The basic test geometry data are compared with other internally heated annular data and with multirod data. (D.L.C.)
Four Transmit Diversity Schemes for Coded OFDM Systems with Four Transmit Antennas (2008)

We compare four open-loop transmit diversity schemes in a coded Orthogonal Frequency Division Multiplexing (OFDM) system with four transmit antennas, namely cyclic shift diversity (CSD), Space-Time Block Code (STBC, Alamouti code is used) with CSD, Quasi-Orthogonal STBC (QO-STBC) and Minimum-Decoding-Complexity QOSTBC (MDC-QOSTBC). We show that in a coded system with low code rate, a scheme with spatial transmit diversity of second order can achieve similar performance to that with spatial transmit diversity of fourth order due to the additional diversity provided by the phase shift diversity with channel coding. In addition, we also compare the decoding complexity and other features of the above four mentioned schemes, such as the requirement for the training signals, hybrid automatic retransmission request (HARQ), etc. The discussions in this paper can be readily applied to many modern wireless communication systems, such as mobile systems beyond 3G, IEEE 802.11 wireless LAN, or IEEE 802.16 WiMAX, that employ more than two transmit antennas and OFDM.
Value of PET/MRI for assessing tumor resectability in NSCLC—intra-individual comparison with PET/CT (2018)

Our findings suggest that whole body PET/MRI can safely be used for the local staging of NSCLC patients. Further studies are warranted to determine whether it is feasible to integrate an imaging sequence in a whole body PET/MRI setting with the potential advantage of detection of liver or brain metastases.
Making a difference (2004)

In his presentation, Christopher will take you on a photographic journey depicting the story of how he became a globally competent citizen and a social entrepreneur because of a simple, yet profound, life-changing moment at age six.
Multi-Objective optimization of a selexol® process for the selective removal of CO2 and H2S from coal-derived syngas (2015)

This paper focuses on the multi-objective optimization of a Selexol® process for the selective removal of CO2 and H2S from coal gasification-derived syngas. A systematic analysis based on a thorough literature review of scheme options, detailed process simulation (including also a properly calibrated PC-SAFT Equation Of State) and design optimization is carried out. More in detail, the design optimization procedure enables the simultaneous optimization of process, utility design, and heat integration, and takes account all of the interactions with the rest of the plant. The multi-objective optimization is carried out with a two-stage approach combining the NSGA-II genetic algorithm with the efficient direct-search method PGS-COM. Results show that in the Selexol® process is crucial to optimize the pressures of the flash cascade releasing the CO2-rich stream to store, because the largest energy penalties are the compression power and the steam necessary for reboiling.
Application of mRNA Arrays for the Production of mCherry Reporter-Protein Arrays for Quantitative Gene Expression Analysis (2019)

The development of programmable regulators that precisely and predictably control gene expression is a major goal of synthetic biology. Consequently, rapid high-throughput biochemical methods capable of quantitatively analyzing all components of gene expression would be of value in the characterization and optimization of regulator performance. In this study we demonstrate a novel application of RNA arrays, involving the production of reporter-protein arrays, to gene expression analysis. This method enables simultaneous quantification of both the transcription and post-transcription/translation components of gene expression, and it also allows the assessment of the orthogonality of multiple regulators. We use our method to directly compare the performance of a series of previously characterized synthetic post-transcriptional riboregulators, thus demonstrating its utility in the development of synthetic regulatory modules and evaluation of gene expression regulation in general.
Multifrequency erbium-doped fiber laser operating at room temperature (2007)

A method to realize room-temperature operation of a multifrequency Er-doped fiber laser with low-frequency shift feedback placed within a linear laser cavity is theoretically proposed and experimentally demonstrated. Simultaneous multiwavelength lasing with 0.5 nm wavelength spacing is experimentally demonstrated by applying a sinusoidal signal of 10 kHz to a fiber phase modulator inserted within the linear cavity to prevent single wavelength steady-state oscillation. In the linear cavity, an all-polarization-maintaining fiber Sagnac loop is used as a periodic filter, and a single-mode fiber loop with a polarization controller is used as a partial reflector and also as an output port.
ChemInform Abstract: C‐Centred Optically Active Organosilanes. Part 2. Application to Enantioselective Allylation of Carbonyl Compounds. (1987)

Abstract The optically active silyl chloride (I) reacts with allylmagnesium bromide to form the allylic silane (III).
A chemometrics approach to compare volatile changes during shelf life of Pulsed Electric Fields, High Pressure and thermal pasteurized apple juice (2018)

High Pressure Processing (HPP) and Pulsed Electric Fields (PEF) processing technologies 17 are being used increasingly on a commercial basis, with high quality-labelled fruit juices being as 18 one of the most important promotion strategies. Quality-related enzymes, which might still be 19 active after HPP and PEF pasteurizations, can cause undesirable aroma changes during storage. 20 This study investigated volatile changes during shelf life of PEF (15.5 kV/cm and specific energy of 21 158 kJ/L), HPP (600 MPa for 3 min) and thermally (72°C for 15 s) pasteurized Jazz apple juices, up 22 to 5 weeks. To have an increased insight into the volatile changes, an integrated instrumental (GC-23 MS) and data analysis (chemometrics) approach was implemented. Immediately after 24 pasteurization, PEF processing resulted a better retention of odor active volatiles, such as (E)-2-25 hexenal and hexyl acetate, whereas thermal processing lowered their amount. During refrigerated 26 storage, these volatiles have gradually decreased in all processed juices. By the end of storage, the 27 amount of these aroma relevant volatiles appears to be still higher in PEF and HPP pasteurized 28 juices compared to their conventional counterparts. This study demonstrated the potential of 29 advanced chemometric approaches to obtain an increased insight into complex shelf life changes.
20 Gb/s QPSK Transmission Using an Electro-Optically Modulated Vertical-Cavity Surface-Emitting Laser (2011)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Z. Qureshi, M. J. Crisp, J. D. Ingham, R. V. Penty, I. H. White, J. A. Lott, and N. N. Ledentsov, "20 Gb/s QPSK Transmission Using an Electro-Optically Modulated Vertical-Cavity Surface-Emitting Laser," in 37th European Conference and Exposition on Optical Communications, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper We.10.P1.20. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article