gebhart/patrepeval huggingface dataset:
Polarization independent integrated mode transformer for uncladded InGaAsP/InP rib waveguides without epitaxial regrowth (1996)

A polarization insensitive fibre port for integration in complex PICs has been demonstrated. The spot-size transformation is performed by a thickness taper integrated with an uncladded InGaAsP/InP rib waveguide in cooperation with guiding layers in the waveguide buffer. No epitaxial overgrowth is necessary to achieve polarization independent coupling. The thickness taper is structured by using shadow mask ion beam etching. The first fabricated integrated spot size transformers show a polarization independent coupling loss of 2.3+or-0.2 dB (butt coupled cleaved fibre). The radiation loss along the waveguide taper amounts to 0.6 dB. The -1 dB-alignment tolerances are larger than +or-2.4 mu m. A theoretical coupling loss of 1 dB is predicted for an optimized waveguide shape. The high yield fabrication process is suited for integration of the spot size transformer in complex PICs.
Effects of eccentricity and arc rotational speed on weld bead geometry in pulsed GMA welding of 5083 aluminum alloy (2011)

The arc rotation mechanism system can be used to obtain the flat and broad weld bead due to the centrifugal force of the rotating arc at welding. In this investigation an arc rotation mechanism is developed and four input process parameters such as arc rotational speed , ratio of wire feed rate to travel speed, wire feed rate and eccentricity are considered. The experiments were conducted on square butt joint plate of 5083 H111 aluminum alloy using full factorial design of experiments.  The mathematical models for penetration and convexity are developed using multiple nonlinear regression analysis and are checked for their adequacy. The confirmation experiments were conducted to verify the models .The mean analysis for penetration and convexity is done at all three levels of input process parameters. It is observed from the investigation that eccentricity has maximum effect on convexity followed by arc rotational speed, ratio of wire feed rate to travel speed and wire feed rate whereas wire feed rate have relative maximum effects on penetration.

	 

	Key words: Arc rotation mechanism, arc rotational speed, eccentricity, full factorial, square butt joint, aluminum alloy.
Mammographic feature enhancement by multiscale analysis (1994)

Introduces a novel approach for accomplishing mammographic feature analysis by overcomplete multiresolution representations. The authors show that efficient representations may be identified within a continuum of scale-space and used to enhance features of importance to mammography. Methods of contrast enhancement are described based on three overcomplete multiscale representations: 1) the dyadic wavelet transform (separable), 2) the phi-transform (nonseparable, nonorthogonal), and 3) the hexagonal wavelet transform (nonseparable). Multiscale edges identified within distinct levels of transform space provide local support for image enhancement. Mammograms are reconstructed from wavelet coefficients modified at one or more levels by local and global nonlinear operators. In each case, edges and gain parameters are identified adaptively by a measure of energy within each level of scale-space. The authors show quantitatively that transform coefficients, modified by adaptive nonlinear operators, can make more obvious unseen or barely seen features of mammography without requiring additional radiation. The authors' results are compared with traditional image enhancement techniques by measuring the local contrast of known mammographic features. They demonstrate that features extracted from multiresolution representations can provide an adaptive mechanism for accomplishing local contrast enhancement. By improving the visualization of breast pathology, one can improve chances of early detection while requiring less time to evaluate mammograms for most patients.
Ruthenium Complexes with Cooperative PNP Ligands: Bifunctional Catalysts for the Dehydrogenation of Ammonia–Borane (2008)

G“Ru”vy reactivity: The new ruthenium(II) complex having cooperative PNP enamido ligand A reversibly activates two equivalents H2 under reversible hydrogenation of amido (B) and amino (C) complexes. B exhibits the highest reported activities in the dehydrocoupling of ammonia–borane.
A single chip line 21 captioning decoder (1992)

Manufacturers of TV sets for the US market require an economical high-performance captioning decoder which is easy to integrate into TV sets. A single-chip decoder is described which conforms to these requirements. The captioning decoder is a single-chip CMOS device known as LITOD, which will acquire, decode, and display line 21 captioning data from a 525 line composite video signal. LITOD was designed to be compatible with existing TV architectures. Some of the component parts of LITOD are described.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The DWPF product composition control system at Savannah River: Statistical process control algorithm (1991)

The DWPF Process batch-blends aqueous radwaste (PHA) with solid radwaste (Sludge) in a waste receipt vessel (the SRAT). The resulting SRAT-Batch is transferred to the next process vessel (the SME) and there blended with ground glass (Frit) to produce a batch of feed slurry. The SME-Batch is passed to a subsequent hold tank (the MFT) which feeds a Melter continuously. The Melter produces a molten glass wasteform which is poured into stainless steel canisters for cooling and, ultimately, shipment to and storage in a geologic Repository. The Repository will require that the glass wasteform be resistant to leaching by any underground water that might contact it. In addition, there are processing constraints on Viscosity and Liquidus Temperature of the melt. The Product Composition Control System (PCCS) is the system intended to ensure that the melt will be Processible and that the glass wasteform will be Acceptable. Within the PCCS, the SPC Algorithm is the device which guides control of the DWPF process. The SPC Algorithm is needed to control the multivariate DWPF process in the face of uncertainties (variances and covariances) which arise from this process and its supply, sampling, modeling, and measurement systems.
Lie Detection using Functional MRI (2001)

Ho-Ling Liu1, Tatia M.C. Lee2, Li Hai Tan3, Chetwyn C.H. Chan4, Ching-Mei Feng5, Jinwen Hou5, Srikanth Mahankali5, Peter T. Fox5, Jia-Hong Gao5 1Dept. of Medical Technology, Chang Gung Univ., Dept. of Diagnostic Radiology, Chang Gung Medical Center, Taoyuan, Taiwan; 2Dept. of Psychology, Univ. of Hong Kong, ; 3Lab. for Language Neuroscience and Cognition, Dept. of Linguistics, Univ. of Hong Kong, ; 4Dept of Rehabilitation Sciences, The Hong Kong Polytechnic Univ., ; 5Research Imaging Center, Univ. of Texas Health Science Center, San Antonio, TX, ;
Fragmentation of Chitosan by Acids (2013)

Fragmentation of chitosan in aqueous solution by hydrochloric acid was investigated. The kinetics of fragmentation, the number of chain scissions, and polydispersity of the fragments were followed by viscometry and size exclusion chromatography. The chemical structure and the degree of N-acetylation (DA) of the original chitosan and its fragments were examined by (1)H NMR spectroscopy and elemental analysis. The kinetic data indicates that the reaction was of first order. The results of polydispersity and the DA suggest that the selected experimental conditions (temperature and concentration of acid) were appropriate to obtain the fragments having the polydispersity and the DA similar to or slightly different from those of the original one. A procedure to estimate molecular weight of fragments as well as the number of chain scissions of the fragments under the experimental conditions was also proposed.
Fertility of Bull Semen Frozen with β-Amylase, β-Glucuronidase, and Catalase (1976)

"Capacitase," a product combining beta-amylase and beta-glucuronidase, was compatible with survival of bull spermatozoa frozen in whole milk-glycerol extender at final concentrations per ml of 0, 5, 10, and 20 mug of beta-amylase combined with 0, 75, 150, and 300 units of beta-glucuronidase, respectively. Bull semen was frozen in whole milk-glycerol extender containing the three lower concentrations of enzymes tested in the previous trial and used to inseminate 9057 first-service cows within 4 mo of freezing. The 60- to 90-day percent nonreturns were 74.6, 75.6, and 75.0. The same treatments plus a fourth one containing 10 mug of catalase per ml were fertility tested in another trial. Insemination of 16,842 cows resulted in 75.6, 74.1, 74.6, and 74.2% nonreturns. In this trial semen was held immersed in liquid nitrogen and distributed for immediate use each mo for 6 mo. There was no change in fertility during 6 mo of continuous storage at --196 C. Under the conditions tested neither catalase nor beta-amylase with beta-glucuronidase enhanced fertility of frozen bull semen.
Functional significance of evolving protein sequence in dihydrofolate reductase from bacteria to humans (2013)

With the rapidly growing wealth of genomic data, experimental inquiries on the functional significance of important divergence sites in protein evolution are becoming more accessible. Here we trace the evolution of dihydrofolate reductase (DHFR) and identify multiple key divergence sites among 233 species between humans and bacteria. We connect these sites, experimentally and computationally, to changes in the enzyme's binding properties and catalytic efficiency. One of the identified evolutionarily important sites is the N23PP modification (∼mid-Devonian, 415-385 Mya), which alters the conformational states of the active site loop in Escherichia coli dihydrofolate reductase and negatively impacts catalysis. This enzyme activity was restored with the inclusion of an evolutionarily significant lid domain (G51PEKN in E. coli enzyme; ∼2.4 Gya). Guided by this evolutionary genomic analysis, we generated a human-like E. coli dihydrofolate reductase variant through three simple mutations despite only 26% sequence identity between native human and E. coli DHFRs. Molecular dynamics simulations indicate that the overall conformational motions of the protein within a common scaffold are retained throughout evolution, although subtle changes to the equilibrium conformational sampling altered the free energy barrier of the enzymatic reaction in some cases. The data presented here provide a glimpse into the evolutionary trajectory of functional DHFR through its protein sequence space that lead to the diverged binding and catalytic properties of the E. coli and human enzymes.
Ionizing Radiation and Elastomers (1960)

Abstract The phenomena which are observed in investigations concerned with high energy ionizing radiation and elastomers follow generally from the principles of related fields such as the interactions of radiation with matter; radiation, polymer, and polymerization chemistry ; and the molecular structure of elastomers in relation to their physical properties. The way in which the knowledge from these various fields is integrated to account for the results with elastomers gives a specialized aspect to the interpretations, which however is very much the same for elastomers as for polymers in general. As usual, the modifying circumstance is the generally greater sensitivity of the physical properties of elastomers to changes in structure than is the case for ordinary polymers. In sketching the relatively short history of work with intense, high energy radiation and elastomers, it is not possible to ignore the unusual circumstances under which it has progressed. The Atomic Energy Act of 1946 transferred control of atomic energy from military to civilian agencies. But it retained such a tight government monopoly in the field that there was little incentive for independent research looking toward peaceful applications from the military developments. However, the Oak Ridge National Laboratory did begin the distribution of isotopes under a licensing system in 1947 which provided opportunities for a broader acquaintance with the characteristics of isotopic sources of radiation and techniques for handling them although the levels were, as a rule, quite low. The Atomic Energy Act of 1954 encouraged a much more liberal participation of private enterprise in the atomic energy program. After the passage of this Act many segments of industry became actively interested in exploring the significance of the new knowledge and technologies for their operations.
Electron wavepacket control with elliptically polarized laser light in high harmonic generation from aligned molecules (2008)

We study experimentally and theoretically the high harmonic emission from aligned samples of nitrogen and carbon dioxide, in an elliptically polarized laser field. The ellipticity induces a lateral shift of the recombining electron wavepacket in the generation process. We show that this effect, which is well known from high harmonic generation (HHG) in atoms, can be useful to maintain the plane wave approximation in the case of HHG from molecules whose orbitals contain nodal planes. The study of the harmonic signal as a function of molecular alignment also reveals the role of the ellipticity on the recollision angle of the electron wavepacket, which can be used to accurately track the position of resonances in harmonic spectra.
Evaluation of high level Petri nets by means of aggregation and decomposition (2002)

We introduce a new method combining the powerful stochastic well formed Petri net (SWN) model with the decomposition approach initiated by B. Plateau (1985). We derive necessary conditions on the modeled systems that allow for the two methods to be combined. For parallel systems satisfying these necessary conditions we develop two models with corresponding algorithms. The first model, which forbids color synchronization between components of the system yields to a strict generalization of each of the two methods. The second model which covers a large range of real life systems needs theoretical study which we have undertaken. An example shows the intuitive ideas behind these developments.
Reference Resolution over a Restricted Domain: References to Documents (2004)

This article studies the resolution of references made by speakers to documents discussed during a meeting. The focus is on transcribed recordings of press review meetings, in French. After an overview of the required framework for reference resolution—specification of the task, data annotation, and evaluation procedure—we propose, analyze and evaluate an algorithm for the resolution of references to documents (ref2doc) based on anaphora tracking and context matching. Applications to speech-to-document alignment and more generally to meeting processing and retrieval are finally discussed.
Data Fusion Within a Constrained Communication Environment (1998)

This paper presents some recent results involving track level fusion in a distributed tracking environment. Successful fusion for the application requires that target state estimates and their error covariance matrices be available for processing. For this study, the limitations associated with several of the existing communication links (missing covariance) and how we can recover track covariance matrices from track quality parameters, are being dealt with. An algorithm for reconstructing an error covariance from on offboard track system is presented using the notion of an ambiguous measurement set. The performance of this approach is demonstrated in several simulated test cases.
Suramin interrupts androgen‐inducible autocrine loop involving heparin binding growth factor in mouse mammary cancer (Shionogi carcinoma 115) cells (1993)

The androgen-dependent clonal cell line SC-3, derived from Shionogi carcinoma 115, secretes a fibroblast growth factor (FGF)-like autocrine growth factor in response to androgen, which is able to bind to FGF receptors. In SC-3 cells, FGF receptor expression is upregulated by the SC-3-derived growth factor, providing a means of amplifying an autocrine loop of cell growth. In the present investigations, the effects of the polysulfonated naphthylurea suramin on this autocrine loop and its amplification in SC-3 cells were studied. Suramin inhibited androgen-dependent growth of SC-3 cells in a concentration-dependent fashion: approximately 50% inhibition was observed at 25 microM. [3H]Thymidine incorporation into the cells stimulated with partially purified SC-3-derived growth factor was inhibited by suramin in a similar way. Additionally, suramin inhibited acidic (a) or basic (b) FGF-induced cell proliferation, though relatively high concentrations were necessary to achieve the maximal inhibition. Pretreatment of SC-3 cells with suramin decreased cell surface 125I-bFGF binding without altering dissociation constant (Kd) of the binding sites. When the cells were incubated with 250 microM suramin for 24 h, the maximum binding (Bmax) decreased to almost 50% of the control. Treatment with suramin also decreased the levels of FGF receptor-1 mRNA to a similar extent, whereas it appeared not to affect the levels of beta-actin mRNA. Moreover, suramin completely blocked androgen- or bFGF-induced accumulation of FGF receptor-1 mRNA. The inhibitory effects of suramin on FGF receptor expression were reversed by simultaneous addition of high concentrations of bFGF. These results indicate that suramin exerts its potent antiproliferative action on SC-3 cells through inhibition of an androgen-inducible autocrine loop involving SC-3-derived growth factor and FGF receptor.
An application generator based on UML specification (2008)

This paper presents a proprietary application generator based on UML specification. The tool is designed for generating the source code in various programming languages from the same specification. The main characteristics of the existent tools are explained in brief. Main generator capabilities and merits are presented as well as an example of usage based on a relatively simple scenario.
Improved Super-Resolution Method And Its Acceleration (2005)

Publication in the conference proceedings of EUSIPCO, Antalya, Turkey, 2005
Counter and shift register Patent (1968)

Computer circuit performing both counting and shifting logic operations also capable of miniaturization and integration in basic circuits
Failure mechanisms in mems (2004)

MEMS components by their very nature have different and unique failure mechanisms than their macroscopic counterparts. This paper discusses failure mechanisms observed in various MEMS components and technologies. MEMS devices fabricated using bulk and surface micromachining process technologies are emphasized.
Large thermoelectric power in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">NaCo</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>single crystals (1997)

We measured and analyzed the transport properties of single-crystal ${\mathrm{NaCo}}_{2}{\mathrm{O}}_{4}$, which is a metallic transition-metal oxide consisting of a two-dimensional triangle lattice of Co. Reflecting the crystal structure, the resistivity is highly anisotropic between in- and out-of-plane directions, and the in-plane resistivity is as low as 200 $\ensuremath{\mu}\ensuremath{\Omega}$ cm at 300 K. Most strikingly, the in-plane thermoelectric power of ${\mathrm{NaCo}}_{2}{\mathrm{O}}_{4}$ is about 100 $\ensuremath{\mu}$V/K at 300 K, which is nearly ten times larger than that of typical metals. The large thermoelectric power and the low resistivity suggest that ${\mathrm{NaCo}}_{2}{\mathrm{O}}_{4}$ is a potential thermoelectric material.
Separation of water out of highly concentrated electrolyte solutions using multistage vacuum membrane distillation (2013)

Absorption dehumidification requires regeneration system to regenerate diluted desiccant solutions, which are still highly concentrated. A novel multi-stage vacuum membrane distillation system was applied for separating water out of the highly concentrated solution. The performance of this novel membrane distillation system with high concentration solution is studied, as well as the effect of solution concentration, heating temperature and feed flow rate on concentration increase, permeate flux and specific energy consumption was studied. Feed solutions are LiCl solution (22-30 wt%) and CH3COOK solution (50-60 wt%).Other experimental parameters studied were: heating temperature, 70-80 °C, feed flow rate, 1.2-2.0 l/min. Response surface method is applied for model building, in order to provide a better understanding of the interactions between different parameters. Compared with pure water, high concentration solution has lower vapor pressure, which leads to lower permeate flux. The highest concentration the system can reach is 36.5 wt% for LiCl solution and over 70 wt% for CH3COOK solution, when the heating temperature is 80 °C. Lower concentration and higher heating temperature will result in larger increase in concentration, higher permeate flux and also lower specific energy consumption. But due to the configuration of the system, optimal flow rates can be found under different conditions. Within the testing region, the permeate flux ranges between 0.147-1.802 l/(m2h) for LiCl solution and 0.189-1.263 l/(m2h) for CH3COOK solution. With low concentration, high heating temperature and low feed flow rate, low specific energy consumptions, 0.85 kWh/l and 0.94 kWh/l for LiCl and CH3COOK solutions are observed respectively. With external heating recovery system, this value can be further reduced.
Silyl phosphites. 21. A new method for the synthesis of L-ascorbic acid 2-O-phosphate by utilizing phosphoryl rearrangement (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilyl phosphites. 21. A new method for the synthesis of L-ascorbic acid 2-O-phosphate by utilizing phosphoryl rearrangementMitsuo Sekine, Tetsuaki Futatsugi, Tsujiaki Hata, and Friedrich CramerCite this: J. Org. Chem. 1982, 47, 18, 3453–3456Publication Date (Print):August 1, 1982Publication History Published online1 May 2002Published inissue 1 August 1982https://pubs.acs.org/doi/10.1021/jo00139a014https://doi.org/10.1021/jo00139a014research-articleACS PublicationsRequest reuse permissionsArticle Views143Altmetric-Citations11LEARN 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