gebhart/patrepeval huggingface dataset:
Surface acoustic wave concentration of microparticle and nanoparticle suspensions (2007)

A rapid particle concentration method in a sessile droplet has been developed using asymmetric surface acoustic wave (SAW) propagation on a substrate upon which the droplet is placed. The SAW device consisted of a 0.75-mm thick, 127.68 YX-axis-rotated cut LiNbO3 as a substrate. An interdigital trans-ducer electrode (IDT) with 25 straight finger pairs in a sim-ple repeating pattern, 12 mm aperture, and a wavelength of λ = 44 µm was patterned on the substrate. The IDT was then driven with a sinusoidal signal at the resonance frequency 8.611 MHz. To investigate the effect of particle type and size on the concentration process, several types of particles were used in this study, including fluorescent particles (1 µm), polystyrene microspheres (3, 6, 20, and 45 µm), and living yeast cells (10-20 µm). Different RF powers were applied ranging from 120 to 510 mW. The concentration processes occurs within two to twenty seconds, depending on the particle size, type and input radio frequency (RF) power, much faster than currently avail-able particle concentration mechanisms due to the large con-vective velocities achieved using the SAW device.
Fast 3D reconstruction with single shot technology : engineering and computing challenges (2012)

Fast 3D reconstruction with single shot technology: the GMPR 3D scanning technologies provide fast wide area scanning from an instantaneous shot. A surface can be reconstructed in 40 milliseconds from a pattern of stripes projected on the target object. It operates on a single image or on a video sequence both in the near-infrared (NIR) and visible spectra. In this talk we are going to describe the engineering and computing principles behind the technologies, highlight the main achievements of our research to date and discuss a number of remaining challenges
Programmable beam shaping of femtosecond pulses (2004)

We demonstrate programmable beam shaping of femtosecond pulses. A liquid crystal modulator is used as an active and adaptive phase filtering device for spatial beam shaping. Round, square, ring and triangle shapes are obtained.
Reducing I/O demand in video-on-demand storage servers (1995)

Recent technological advances have made multimedia on-demand services, such as home entertainment and home-shopping, important to the consumer market. One of the most challenging aspects of this type of service is providing access either instantaneously or within a small and reasonable latency upon request. In this paper, we discuss a novel approach, termed adaptive piggybacking, which can be used to provide on-demand or nearly-on-demand service and at the same time reduce the I/O demand on the multimedia storage server.
Electrodynamic coupling in regular arrays of gold nanocylinders (2012)

Abstract We report far-field experimental optical extinction spectra of linear chains of gold nanocylinders with interparticle separations close to the particle's surface plasmon resonance (SPR) wavelength λ SPR . The spectra reveal non-monotonic shift of the SPR peak position with increase in the distance d . The non-monotonic λ SPR ( d ) dependence is rationalized considering electromagnetic coupling between the particles in the dipole approximation. Simple expressions for the modified SPR frequencies are obtained using the dipole scattered field and taking into account both the retardation and phase lag effects.
Improvement of Human Early Embryo Development in Vitro by Coculture on Monolayers of Vero Cells1 (1989)

Human "spare" embryos, judged unsuitable for freezing because of their poor quality, were cocultured for 5 days on a "Vero" cell layer. These epithelial cells were selected because kidney and genital tract have a common embryologic origin and "Vero" cells are a safe and highly controlled cellular support used for vaccine production. In the control group, the embryos were cultured in culture medium alone (B2 + 15% serum). At the end of the culture, the number of blastocysts was significantly higher in the coculture group: 61% vs. 3%. Moreover, at least half of the blastocysts were expanding and hatching (13/25), with a chronologically normal development. These observations suggest that (1) the coculture system improves human embryonic development; (2) it can rescue early degenerating embryos; (3) beneficial effects of coculture are not strictly genital-tract specific, but rather epithelium dependent. This coculture system could be used for in vitro fertilization to prolong in vitro culture and thus make it possible to transfer embryos at a more appropriate time, to eliminate early-blocked eggs, and to freeze embryos at the blastocyst stage, when freezing procedures are most successful.
A 128kb high density portless SRAM using hierarchical bitlines and thyristor sense amplifiers (2011)

A 128 kb portless SRAM is presented with 1024 rows per hierarchical bitline and CMOS thyristor-based local sense amplifiers. Each portless cell is 0.317 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> in 45 nm CMOS and consumes 50.8 fJ of energy per access at a 17.86 ns cycle time. A 65% read SNM improvement and a 33% leakage power reduction is achieved over a conventional 6T design. The thyristor-based sense amplifier occupies 2.4 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and provides variation tolerant sensing within the hierarchical column pitch.
Depolymerization and Recycling (2003)

Poly(ethylene terephthalate) (PET) is one of the most extensively recycled polymeric materials. The main reason for the widespread recycling of PET is its extensive use in plastic packaging applications, especially in the beverage industry as plastic bottles. The consistency in terms of volume and availability of postconsumer bottles from sorting facilities and its high material scrap value create an excellent economic environment for PET recycling. We discuss applications of recycled and depolymerized PET products. Next, we consider PET chemistry and catalysis. We close with a discussion of synthetic methods followed by extensive examples.
Electromagnetic Effects in Magnetic Insulators (1972)

Electromagnetic modes are capable of strong coupling to magnetostatic modes in magnetic insulators. For certain ranges of magnetic field bias (or, equivalently, sample dimension), the two modes interact and lose their identity. This composite mode has been investigated both experimentally and theoretically. The experiment centered on the modes found in a small YIG sample coupled to an electromagnetic resonator in the form of a rutile disk and on the modes in a large YIG sphere (which forms its own electromagnetic resonator). Coupled-mode theory was applied to the experimental results. The theory has been extended to include the effects of relaxation, nonlinearities, and mode segregation, i.e., the frequency separation of the coupled mode from the allowed frequencies in the low-frequency spinwave manifold (e.g., ferromagnetic or acoustic ferrimagnetic spinwaves). A careful study has been conducted on these segregated modes. Experimental results show that for sufficiently strong coupling the observed mode undergoes a reduction in magnetic loss and a sharp increase in nonlinear threshold, in accordance with the theoretical behavior of a segregated mode.
Preparation of Bis(diazo) Compounds Incorporated into Butadiyne and Thiophene Units, and Generation and Characterization of Bis(carbene) From These Compounds (2004)

[9-[10-(4-t-Butyl-2,6-dimethyl)phenyl]anthryl](4-bromo-2,6-dimethylphenyl)diazomethane (1-N(2)) was found to be stable enough to survive under Sonogashira and Suzuki coupling reaction conditions, and bis(diazo) compounds incorporated into the 1,4-positions of butadiyne (3-2N(2)) and the 2,5-position of thiophene (4-2N(2)) were prepared. Irradiation of those bis(diazo) compounds generated bis(carbenes), which were characterized by ESR and UV-vis spectroscopic techniques in a matrix at low temperature, as well as time-resolved UV-vis spectroscopy in solution at room temperature. These studies revealed that both of the bis(carbenes), 3 and 4, have a singlet quinoidal diradical ground state with a very small singlet-triplet energy gap of less than 1 kcal/mol. A remarkable increase in the lifetime of bis(carbenes) as opposed to that of monocarbene (1) was noted and was interpreted to indicate that bis(carbenes) are thermodynamically stabilized as a result of delocalization of unpaired electrons throughout a pi-net framework. Despite the stability, both bis(carbenes) are readily trapped by molecular oxygen to afford bis(ketones) as main products.
Study of the H Test for Evaluating the Adhesive Properties of Tire Cord in Natural and GR-S Rubbers (1947)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation W. James Lyons, Mary L. Nelson, Carl M. Conrad; Study of the H Test for Evaluating the Adhesive Properties of Tire Cord in Natural and GR-S Rubbers. Rubber Chemistry and Technology 1 March 1947; 20 (1): 268–280. doi: https://doi.org/10.5254/1.3546868 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest Search
Motion trajectory based video indexing and retrieval (2003)

This paper presents a technique to efficiently index and retrieve video clips in terms of motion-trajectory-based similarity. We describe the motion trajectory in three representations: the horizontal and vertical movements of the trajectory, and the motion trail that indicates shape of the trajectory. Each representation is approximated by a polynomial function. We index the polynomial coefficients and combine different spatio-temporal characteristics to provide flexible retrieval processes. A unified framework is also proposed to deal with various query types: query-by-example, query-by-sketch, and query-by-specification.
Characterization of epoxy resin (SU‐8) film using thickness‐shear mode (TSM) resonator under various conditions (2004)

Abstract Characterization of an epoxy resin film, commonly known as SU‐8, is presented using thickness shear mode (TSM) quartz resonator. The impedance‐admittance characteristics of the equivalent circuit models of the unperturbed and coated resonators are analyzed to extract the storage modulus and loss modulus ( G ′ and G ″). Those parameters are needed to establish SU‐8 film as an effective wave‐guiding layer in the implementation of guided shear‐horizontal surface acoustic wave (SH‐SAW) sensor platforms. Both cured and uncured polymer films are studied at the fundamental and third harmonic frequencies of the TSM resonators. The storage modulus ( G ′) and loss modulus ( G ″) of the SU‐8 film approach constant values of 1.66 × 10 10 dyne/cm 2 and 6.0 × 10 8 dyne/cm 2 , respectively, for relatively thicker films (>20 μm) at a relatively low frequency of 9 MHz. The most accurate values for the extracted shear moduli G ( G = G ′+ jG ″) are obtained at high thickness where the viscoelastic contribution to the TSM response is substantial. The effect of temperature on the storage and loss moduli is determined for the range of −75 to 40 °C. It is found that the polymer approaches a totally glassy state below −60 °C. Exposure to water appears to follow Fickian diffusion behavior at short times and this exposure also results in changes to both G ′ and G ″. However, stability is rapidly reached with exposure to water, indicating relatively lower water absorption, consistent with the extracted diffusion coefficient. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 2373–2384, 2004
The Mathematics of Ciphers (1999)

This book is an introduction to the algorithmic aspects of number theory and its applications to cryptography, with special emphasis on the RSA cryptosys-tem. It covers many of the familiar topics of elementary number theory, all with an algorithmic twist. The text also includes many interesting historical notes.
Regioselective Direct C–H Alkylation of NH Indoles and Pyrroles by a Palladium/Norbornene-Cocatalyzed Process (2013)

Nitrogen-containing heterocycles, including 1<i>H</i>-indoles and electron-deficient 1<i>H</i>-pyrroles, undergo a palladium/norbornene-cocatalyzed regioselective alkylation at the C–H bond adjacent to the NH group. A primary alkyl halide is used as the electrophile and the reaction proceeds smoothly under mild conditions to give 2-alkyl-1<i>H</i>-indoles and 2-substituted or 2,3-disubstituted 5-alkyl-1<i>H</i>-pyrroles in good yields.
A semi‐degradable composite scaffold for articular cartilage defects (2011)

Few options exist to replace or repair damaged articular cartilage. The optimal solution that has been suggested is a scaffold that can carry load and integrate with surrounding tissues; but such a construct has thus far been elusive. The objectives of this study were to manufacture and characterize a nondegradable hydrated scaffold. Our hypothesis was that the polymer content of the scaffold can be used to control its mechanical properties, while an internal porous network augmented with biological agents can facilitate integration with the host tissue. Using a two-step water-in-oil emulsion process a porous polyvinyl alcohol (PVA) hydrogel scaffold combined with alginate microspheres was manufactured. The scaffold had a porosity of 11-30% with pore diameters of 107-187 μm, which readily allowed for movement of cells through the scaffold. Alginate microparticles were evenly distributed through the scaffold and allowed for the slow release of biological factors. The elastic modulus (Es ) and Poisson's ratio (υ), Aggregate modulus (Ha ) and dynamic modulus (ED ) of the scaffold were significantly affected by % PVA, as it varied from 10 to 20% wt/vol. Es and υ were similar to that of articular cartilage for both polymer concentrations, while Ha and ED were similar to that of cartilage only at 20% PVA. The ability to control scaffold mechanical properties, while facilitating cellular migration suggest that this scaffold is a potentially viable candidate for the functional replacement of cartilage defects.
A repetitive DNA family (Sau3A family) in human chromosomes: extrachromosomal DNA and DNA polymorphism. (1986)

In this paper, we report a tandemly repeated DNA sequence found in human chromosomes. The DNA sequence, which is present at approximately 1000 copies per haploid genome, consists of a basic unit 849 base pairs (bp) long with a single specific restriction enzyme (Sau3AI) cutting site. The unit is further composed of five subunits, each approximately 170 bp long. When DNAs from various sources were examined by Southern hybridization using the repetitive DNA as a probe, a considerable degree of restriction fragment length polymorphism was observed. Furthermore, a substantial percentage (approximately 1.0%) of the same DNA sequence was also found extrachromosomally in the cultured human (HeLa) cells as monomers and oligomers of the basic unit in the form of covalently closed circular DNA. These results suggest that the repetitive DNA is unstable and prone to be excised from the chromosomes through homologous recombination.
Prevalence and Distribution of Adhesins in Invasive Non-Type b Encapsulated <i>Haemophilus influenzae</i> (2003)

ABSTRACT Adhesion to the respiratory epithelium plays an important role in Haemophilus influenzae infection. The distribution of H. influenzae adhesins in type b and nontypeable strains has been characterized, but little is known about the prevalence of these factors in non-type b encapsulated strains. We analyzed 53 invasive type a, type e, and type f strains for the presence of hap , hia , hmw , and hif genes; Hap, Hia, and HMW1/2 adhesins; and hemagglutinating pili. The hap gene was ubiquitous, and homologs of hmw and hia were present in 7 of 53 (13.2%) and 45 of 53 (84.9%) strains, respectively. Hap was detected in 28 of 45 (62.2%) hap + strains, HMW1/2 was detected in 5 of 7 (71.4%) hmw + strains, and Hia was detected in 31 of 45 (68.8%) hia + strains. The hif gene cluster was present in 26 of 53 strains (49.1%), and 21 of 26 hif + strains (80.8%) agglutinated (HA) red blood cells. Nine isolates exhibited HA but lacked the hif gene cluster. The distribution of adhesin genes correlated with the genetic relatedness of the strains. Strains belonging to one type a clonotype and the major type e clonotype possessed hia but lacked the hif cluster. Strains belonging to the second type a clonotype possessed both hia and hif genes. All type f strains belonging to the major type f clonotype possessed hia and lacked hifB . Although the specific complement of adhesin genes in non-type b encapsulated H. influenzae varies, most invasive strains express Hap and Hia, suggesting these adhesins may be especially important to the virulence of these organisms.
LIC-KOR-Promoted Synthesis of Alkoxydienyl Amines: An Entry to 2,3,4,5-Tetrasubstituted Pyrroles (2009)

A stereoselective approach to the synthesis of (E)-alkoxydienylamines (2) is described, starting from alpha,beta-unsaturated acetals (1) and aryl imines, under superbasic conditions. These can be readily converted into alpha-arylglycine derivatives (3) by mild acidic hydrolysis or, in turn, cyclized under oxidative conditions in the presence of a Pd catalyst to 2,3,4,5-tetrasubstituted pyrroles (4).
VRRM: a value-based requirements' risk management process (2008)

The technological, cost, people and schedule issues faced by software development, make it vulnerable for several types of risks. Among these the requirements' risks are proven to have the highest contribution. An effective risk management is critical while developing software systems. Moreover, a project can never be successful if stakeholders don't get their valued things. Every requirement contributes towards some value for a stakeholder. Therefore it is important to manage requirement risks effectively. Also, as different stakeholders have different perception of risk, it is necessary to have a process that can manage requirements' risks and fulfills the values of stakeholders as well. This paper contributes by presenting a VRRM process that is designed to manage requirements related risks in a value based manner.
Studies on the Reactions of Aliphatic Amines with Epoxypropane-derivatives and their Products. II (1964)

By the reaction of several aliphatic secondary amines with epichlorohydrin, N-(γ-chloro-β-hydroxypropyl) amino compounds were isolated. These compounds were turned easily into quarternary ammoium compounds by standing for long period of time or by heating of their aqueous solution, but it was found that a complete quarternarisation was difficult in case of N, N'-bis(γ-chloro-β-hydroxypropyl) pipe-razine. However, N-(γ-chloro-β-hydroxypropyl) amino compounds or quarternary ammonium compounds were unable to be isolated from the reaction product of aliphatic primary amines with epichlorohydrin. Reactions of aliphatic amines and glycidolsulfonic acid esters gave products difficult for isolation of N-(γ-sulfonyloxy-β-hydroxypropyl) amino compounds but resulted in a directive formation of quarternary ammonium compounds, except for the reaction of piperazine and glycidol-p-toluenesulfonic acid esters. It was confirmed that these quarternary ammonium compounds were formed only as an intramolecular reaction resulting in the azetidinium ring.
Connectionless data transmission (1982)

The increasingly familiar and ubiquitous Reference Model of Open Systems Interconnection, currently being considered by the International Organization for Standardization (ISO) as a Draft International Standard (DIS), is based on the explicit assumption that a "connection" -- an association between two or more communication entities, possessing certain characteristics over and above those possessed by the entities themselves - is required for the transfer of data in an Open Systems Interconnection (OSI) environment. Although the connection-oriented model of communications behavior has proven to be an extremely powerful concept, and has been applied successfully to the design and implementation of protocols and systems covering a wide range of applications, a growing body of research and experience suggests that a complementary concept - connectionless data transmission - is an essential part of the Open Systems Interconnection architecture, and should be embraced as such by the OSI Reference Model. This paper explores the concept of connectionless data transmission and its relationship to the more familiar concepts of connection-oriented data transfer, developing a rationale for the inclusion of the connectionless concept in the Reference Model as an integral part of the standard description of the OSI architecture.
The Effects of Brand Name Suggestiveness on Advertising Recall (1998)

The authors report the results of a laboratory experiment examining the effects of the meaningfulness of brand names on recall of advertising. The findings indicate that a brand name explicitly conveying a product benefit (e.g., PicturePerfect televisions) leads to higher recall of an advertised benefit claim consistent in meaning with the brand name compared with a nonsuggestive brand name (e.g., Emporium televisions). Conversely, a suggestive brand name leads to lower recall of a subsequently advertised benefit claim unrelated in product meaning (e.g., superior sound) compared with a nonsuggestive brand name. The authors discuss implications of these findings for marketers with respect to advertising strategies and the optimal use of meaningful brand names in building and managing brand equity.
Automatic apparatus for the determination of small concentrations of sulfur dioxide in air--II (1929)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAutomatic apparatus for the determination of small concentrations of sulfur dioxide in air--IIMoyer D. Thomas and John N. AbersoldCite this: Ind. Eng. Chem. Anal. Ed. 1929, 1, 1, 14–15Publication Date (Print):January 1, 1929Publication History Published online1 May 2002Published inissue 1 January 1929https://pubs.acs.org/doi/10.1021/ac50065a004https://doi.org/10.1021/ac50065a004research-articleACS PublicationsRequest reuse permissionsArticle Views389Altmetric-Citations13LEARN 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 Get e-Alerts