gebhart/patrepeval huggingface dataset:
Studies of <i>Thermobifida fusca</i> plant cell wall degrading enzymes (2004)

I have been studying the Thermobifida fusca cellulose degrading proteins for the past 25 years. In this period, we have purified and characterized the six extracellular cellulases and an intracellular beta- glucosidase used by T. fusca for cellulose degradation, cloned and sequenced the structural genes encoding these enzymes, and helped to determine the 3-dimensional structures of two of the cellulase catalytic domains. This research determined the mechanism of a novel class of cellulase, family 9 processive endoglucanases, and helped to show that there were two types of exocellulases, ones that attacked the non-reducing ends of cellulose and ones that attacked the reducing ends. It also led to the sequencing of the T. fusca genome by the DOE Joint Genome Institute. We have studied the mechanisms that regulate T. fusca cellulases and have shown that cellobiose is the inducer and that cellulase synthesis is repressed by any good carbon source. A regulatory protein (CelR) that functions in the induction control has been purified, characterized, and its structural gene cloned and expressed in E. coli. I have also carried out research on two rumen bacteria, Prevotella ruminicola and Fibrobacter succinogenes, in collaboration with Professor James Russell, helping to arrange for the genomes of these two organisms to be sequenced by TIGR, funded by a USDA grant to the North American Consortium for Genomics of Fibrolytic Ruminal Biology.
Über die ionische Polymerisation von Acrolein und die Struktur der Polymerisate. Polymere Acroleine. 27. Mitt. (1963)

Abstract Die Polymerisation von besonders gereinigtem Acrolein mit verschiedenen anionischen Katalysatoren sowie mit Borfluoridätherat wird beschrieben. Diese Polymerisate haben andere physikalische und chemische Eigenschaften als die mit Redoxsystemen gewonnenen Polyacroleine. Es wurden Polymere hergestellt, die nur etwa 2 Mol‐% Aldehydgruppen enthalten, aber 70 Mol‐% Doppelbindungen. Durch spektroskopische und chemische Methoden konnte die Struktur dieser Polymeren weitgehend aufgeklärt werden.
Ultrashort pulses in optical microresonators with Kerr nonlinearity (2017)

A frequency comb consists of a number of equidistant discrete frequency tones. Over the last decade, optical frequency combs have become indispensable tools for molecular fingerprinting, low-phase-noise and spectrally-pure radio frequency signal synthesis, astronomical spectrograph calibration and search for exoplanets, and frequency metrology and timekeeping. While originally realized by mode-locked lasers, frequency combs have in recent years been generated in high-quality-factor Kerr-nonlinear optical resonators driven by a continuous wave (CW) laser pump. “Microcombs” hold great promise for light-weight, small-footprint, robust, and power-efficient comb sources with larger repetition rates and in frequency regimes not available to mode-locked lasers. In addition to their many practical applications, microcombs provide a rich and flexible platform for the study of nonlinear optical, quantum optical, and nonlinear dynamical phenomena. This thesis focuses on ultrashort pulse generation in Kerr-nonlinear optical microresonators, which arise when the tones of a frequency comb oscillate in synchrony. In this thesis, a new synchronization model for mode locking in parametric frequency combs is introduced, which is also applicable to mode-locked laser systems based on saturable absorbers. A novel technique for deterministic generation of chip-based ultrashort pulses (dissipative cavity Kerr solitons) based on modulating the driving CW pump is devised. The influence of higher-order dispersion on frequency comb generation and stability is investigated. Based on this study, the impact of higher-order dispersion on the transfer of pump power fluctuations to the repetition rate of generated pulses is analyzed. It is also shown that pure fourth-order dispersion supports the generation of Gaussian pulses in microresonators. An important limitation of the well-established split-step Fourier transform method for the theoretical study of microcombs is identified and explained, hinting at the advantages of the alternate approach exploiting coupled-wave equations. Finally, broadband frequency comb generation in the near-infrared regime, based on realistic dispersion-engineered crystalline resonators and with experimentally feasible pump and photodetector parameters is numerically demonstrated. This novel broadband frequency comb is spectrally wide enough for application in rubidium-based optical clocks.
Context-aware Automatic Access Policy Specification for IoT Environments (2018)

Data privacy becomes a primary impediment to the realization of the IoT vision. One approach to the IoT security and privacy problem is to restrict access to sensitive data via access control and authorization models. Yet access context in IoT changes frequently raising the need for flexible and dynamic access control policies. Towards developing dynamic access control policies, context-based access control techniques are being investigated due to their robustness in assigning dynamic access permissions according to changes in context. In this paper, we propose to automate the generation of access control policies to overcome the inflexibility in traditional access policy specification techniques, and improve its adaptability to dynamic IoT environments. In our framework, we use context, attributes, and predication to describe the core access control elements. In response to access requests, our algorithm automatically produces conflict-free access control policies and makes the final access decisions at runtime. Our framework prevents non-authorized data accesses, and satisfies privacy constraints for authorized access requests in highly dynamic IoT environments. Our preliminary evaluation shows that the proposed approach offers greater flexibility and improved scalability than the current state-of-the-art methods.
Analysis of the Microfluid Flow in an Evaporating Sessile Droplet (2005)

The axisymmetric time-dependent flow field in an evaporating sessile droplet whose contact line is pinned is studied numerically and using an analytical lubrication theory with a zero-shear-stress boundary condition on the free surface of the droplet at low capillary and Reynolds numbers. A finite element algorithm is developed to solve simultaneously the vapor concentration and flow field in the droplet under conditions of slow evaporation. The finite element solution confirms the accuracy of the lubrication solution, especially when terms of higher order in the droplet flatness ratio (the ratio of droplet height to radius, h/R) are included in the lubrication theory to account more accurately for the singular flow near the contact line.
Doctrina aeroespacial, necesidades y retos para el ejército del aire (2001)

En las operaciones militares de nuevo cuno, necesarias para hacer frente a todos estos conflictos emergentes, el poder aeroespacial ha alcanzado un papel fundamental, ya que tiene la habilidad de explotar la tercera dimension, ademas del factor tiempo, considerada la cuarta, y ello es resultado de la aplicacion de las caracteristicas inherentes de altura, velocidad, alcance, precision, letalidad, flexibilidad, capacidad de respuesta y concentracion.
Turbulent burst control through phase-locked traveling surface depressions (1985)

The influence of a traveling, surface depression on turbulent pre-burst flow has been investigated both theoretically and experimentally. Two-dimensional calculations of a transverse vortex (representing a 'typical' eddy) embedded in a laminar boundary layer show that properly phased-wall motion can reduce vorticity and raise wall pressure beneath the convecting vortex. Experiments in low-speed air with an electromagnetically driven wall membrane show that a traveling wall depression can accelerate flow near the wall and reduce pre-burst Reynolds stress.
<i>Ab initio</i>calculations of the electronic structure and bonding characteristics of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>LaB</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math> (2005)

Lanthanum hexaboride (${\mathrm{LaB}}_{6}$, NIST SRM--660a) is widely used as a standard reference material for calibrating the line position and line shape parameters of powder diffraction instruments. The accuracy of this calibration technique is highly dependent on how completely the reference material is characterized. Critical to x-ray diffraction, this understanding must include the valence of the La atomic position, which in turn will influence the x-ray form factor $(f)$ and hence the diffracted intensities. The electronic structure and bonding properties of ${\mathrm{LaB}}_{6}$ have been investigated using ab initio plane-wave pseudopotential total energy calculations. The electronic properties and atomic bonding characteristics were analyzed by estimating the energy band structure and the density of states around the Fermi energy level. The calculated energy band structure is consistent with previously reported experimental findings; de Haas--van Alphen and two-dimensional angular correlation of electron-positron annihilation radiation. In addition, the bond strengths and types of atomic bonds in the ${\mathrm{LaB}}_{6}$ compound were estimated by analyzing the Mulliken charge density population. The calculated result revealed the coexistence of covalent, ionic, and metallic bonding in the ${\mathrm{LaB}}_{6}$ system and partially explains its high efficiency as a thermionic emitter.
Decentralized adaptive control of manipulators: theory, simulation, and experimentation (1989)

The author presents a simple decentralized adaptive control scheme for multijoint robot manipulators based on the independent joint control concept. The control objective is to achieve accurate tracking of desired joint trajectories. The proposed control scheme does not use the complex manipulator dynamic model, and each joint is controlled simply by a PID (proportional-integral-derivative) feedback controller and a position-velocity-acceleration feedforward controller, both with adjustable gains. Simulation results are given for a two-link direct-drive manipulator under adaptive independent joint control. The results illustrate trajectory tracking under coupled dynamics and varying payload. The proposed scheme is implemented on a MicroVAX II computer for motion control of the three major joints of a PUMA 560 arm. Experimental results are presented to demonstrate that trajectory tracking is achieved despite coupled nonlinear joint dynamics.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
An Experimental Study on the Frost Prevention using Micro Liquid Film of an Antifreeze Solution (2006)

The effect of antifreeze solution liquid film on the frost prevention is experimentally investigated. It is desirable that the antifreeze solution spreads widely on the heat exchanger surface forming thin liquid film to prevent frost nucleation while having small thermal resistance across the film. A porous layer coating technique is adopted to improve the wettability of the antifreeze solution on a parallel plate heat exchanger. The antifreeze solution spreads widely on the heat exchanger surface with 100㎛ thickness by the capillary force resulted from the porous structure. It is observed that the antifreeze solution liquid film prevents a parallel plate heat exchanger from frosting. The reductions of heat and mass transfer rate caused by the thin liquid film are only 1~2% compared with those for non-liquid film surface.
Giant Pedunculated Seborrheic Keratosis (1979)

Seborrheic warts, usually referred to now as seborrheic keratoses, are rarely discussed, even though they are among the most common benign cutaneous tumors observed in man. According to Freudenthal and Spitzer,<sup>1</sup>seborrheic warts were described as early as 1869 by Neumann, who called them "senile" warts.<sup>2</sup>Although already widely used, the term "seborrheic warts" was first mentioned in the literature by Barthelèmy<sup>3</sup>in 1896. Freudenthal and Spitzer reported that these usually flat and sessile warts could also be mushroom-like and pendulous, and Siemens<sup>4</sup>and Pollitzer<sup>5</sup>emphasized that they could become very large. We describe here a patient with a seborrheic keratosis of the pendulous mushroom-like variety, the most unusual one in our experience of this common tumor. <h3>Report of a Case</h3> A brownish lesion began to develop above the right inguinal region of a 75-year-old woman approximately 40 years ago. The lesion, over a period
Volumetric Analysis of Sodium Aluminate Solutions (1953)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVolumetric Analysis of Sodium Aluminate SolutionsH. L. Watts and D. W. UtleyCite this: Anal. Chem. 1953, 25, 6, 864–867Publication Date (Print):June 1, 1953Publication History Published online1 May 2002Published inissue 1 June 1953https://pubs.acs.org/doi/10.1021/ac60078a005https://doi.org/10.1021/ac60078a005research-articleACS PublicationsRequest reuse permissionsArticle Views584Altmetric-Citations38LEARN 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
Obesity Prevention in Early Adolescence: Student, Parent, and Teacher Views (2009)

Implications of these findings for the development of school-based, integrated strategies for obesity prevention among early adolescents are discussed.
The Morbidity of Multivariable Grey Model MGM<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mo stretchy="false">(</mml:mo><mml:mn fontstyle="italic">1</mml:mn><mml:mo>,</mml:mo><mml:mi>m</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math> (2017)

This paper proposes the morbidity of the multivariable grey prediction MGM<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M2"><mml:mo stretchy="false">(</mml:mo><mml:mn fontstyle="italic">1</mml:mn><mml:mo>,</mml:mo><mml:mi>m</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math> model. Based on the morbidity of the differential equations, properties of matrix, and Gerschgorin Panel Theorem, we analyze the factors that affect the morbidity of the multivariable grey model and give a criterion to justify the morbidity of MGM<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M3"><mml:mo stretchy="false">(</mml:mo><mml:mn fontstyle="italic">1</mml:mn><mml:mo>,</mml:mo><mml:mi>m</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>. Finally, an example is presented to illustrate the practicality of our results.
Determinants of female sexual orgasms (2016)

The findings indicate that women differ greatly from one another in terms of their tendency and capacity to experience orgasms. The improvements in gender equality and sexual education since the 1970s have not helped women to become more orgasmic. Neither has the major increase in masturbation habits (among women in general). One challenge for future studies is to understand why women value their partner's orgasms more than their own.
Multi-parameter local optimization for the design of superior matched filter polyphase pulse compression codes (2002)

Polyphase codes, such as the Kretschmer-Lewis palindromic P4 code, and the nonlinear FM P(n,k) code, have been used in radar systems to provide low sidelobe autocorrelation properties and superior Doppler performance. A disadvantage in using these codes, is that they are susceptible to defeat, when a repeat jammer is present. In this paper, we use a multi-parameter optimization algorithm to find sets of quasi-orthogonal polyphase codes that retain most of the superior matched filter qualities of polyphase codes. This is done so that the radar designer can alternate quasi-orthogonal polyphase coded versions of the same waveform sequence length, for pulse-to-pulse, or dwell-to-dwell, ECM robustness. All or any subset of a set of parameters of these matched filter code sets (peak sidelobes, integrated sidelobes, Doppler tolerance, and level of orthogonality) can be optimized simultaneously according to a predetermined weighting priority.
Bicarbonate addition promotes coral growth (1999)

The addition of 2 mM bicarbonate to aquaria containing tropical ocean water and branches of Porites porites caused a doubling of the skeletal growth rate of the coral. Nitrate or ammonium addition (20 μM) to oligotrophic seawater caused a significant reduction in coral growth, but when seawater containing the extra bicarbonate was supplemented with combined nitrogen, no depression of the higher growth rate was evident. We infer that (1) the present dissolved inorganic carbon (DIC) content of the ocean limits coral growth, (2) this limitation is exacerbated by nitrate and ammonium, and (3) adding DIC increases coral calcification rates and confers protection against nutrient enrichment.
Consistent Self‐monitoring of Weight: A Key Component of Successful Weight Loss Maintenance (2007)

Consistent self-weighing may help individuals maintain their successful weight loss by allowing them to catch weight gains before they escalate and make behavior changes to prevent additional weight gain. While change in self-weighing frequency is a marker for changes in other parameters of weight control, decreasing self-weighing frequency is also independently associated with greater weight gain.
Mono- and Dialkylations of Pyrrole at C2 and C5 Positions by Nucleophilic Substitution Reaction in Ionic Liquid (2005)

[reaction: see text] A novel ionic liquid methodology for pyrrole C-alkylation is described. The pyrrole alkylation is achieved with various simple alkyl halides and mesylates selectively at C2 and C5 positions in good yields with minimal byproducts under relatively mild conditions in various ionic liquids. 2-(3-Phenylpropyl)pyrrole (2a) was synthesized from pyrrole and 1-bromo-3-phenylpropane in a mixture solvent system, [bmim][SbF6] and CH3CN, in 81% yield at 115 degrees C for 44 h with 5% yield of dialkylated compound 3a.
Quantum identity authentication without entanglement (2018)

An interesting protocol for quantum identity authentication on a basis of the classic shared secret has been presented recently (Hong et al. in Quantum Inf Process 16(10): 236, 2017). It requires few resources and it is technologically feasible. Its seminal analysis focuses on average eavesdropper’s information gain per single protocol run—a parameter suitable for estimation of the security margin applicable to the protocols aiming at provision of confidentiality. However, the security requirements of the authentication process are very stringent—no single bit of the secret can be revealed, otherwise the eavesdropper can collect subsequent bits of the secret in successive protocol runs. The failure of the seminal version to meet this requirement is demonstrated. The sequential processing of qubits and the static nature of the compared data is the rationale behind the improvement. The introduced changes make that partial information gained in some authentication attempt gives the eavesdroppers no advantage in breaking the next ones. They are forced to consider each authentication transaction as a separate puzzle that can be solved according to all-or-nothing paradigm. The improvement retains conceptual simplicity and technological feasibility of the seminal version of the protocol.
Connection details for prefabricated bridge elements and systems. (2009)

Prefabricated components of a bridge produced off-site can be assembled quickly, and can reduce design time and cost,\nminimizing forming, minimize lane closure time and/or possibly eliminate the need for a temporary bridge. This document has\nbeen developed to promote the use of prefabricated elements and systems in bridges and focuses on "Connection Details" as\npart of accelerated construction projects. Accelerated Bridge Construction is one of the prime focus areas of the Office of\nInfrastructure of Federal Highway Administration. It focuses on a need to create awareness, inform, educate, train, assist and\nentice State DOT’s and their staff in the use of rapid construction techniques. This document represents the “State of the\nPractice” at this time with respect to connections between prefabricated elements in accelerated bridge construction projects.\nMost of the details were obtained from State Departments of Transportation, industry organizations, and private consultants.\nThis information contained herein should be used to develop designs and determine which details would be appropriate for\naccelerating bridge construction projects.\n
A Computer-Aided Conceptual Design System: Model and Applications (2011)

An effort is made to give a description of a computer-aided conceptual design system. A novel Function-Action-Behavior-Mechanism (FABM) modeling framework is proposed to realize mapping from the overall function to principle solution according to customer’s requirements. Expansion and modification rules in the demand behavior are developed to extend the innovation of principle solution. A case study on pan mechanism design for cooking robot is presented to show the procedure of how to implement the intelligent reasoning based on the FABM model.
Use of Antitranspirant Epidermal Coatings for Plant Protection in China (1990)

The compound tested as a barrier to fungal invasion is an antitranspirant known in Chinese by the trade name gao-zhi-mo(GZM), meaning high-quality lipid membrane. GZM is a stable water emulsion with dodecyl alcohol as the major component. When sprayed on the surface of plants, it forms a continuous film or membrane that permits diffusion of oxygen and carbon dioxide but inhibits the passage of water
Drying characteristics in a jet‐spouted bed dryer (1992)

Abstract A conical jet‐spouted bed dryer with inert bodies was used for drying of animal blood plasma. The effects of the operating conditions on the product properties, final moisture content and throughput of the dryer were investigated. A drying rate model using the conventional rate equation, where the overall effective driving force is based on the surface temperature calculated from the unsteady‐state heat transfer Fourier equation, was proposed. Satisfactory agreement between calculated and experimental results was obtained.