gebhart/patrepeval huggingface dataset:
A review of contention resolution algorithms for IEEE 802.14 networks (1999)

Bidirectional cable TV networks using hybrid fiber coaxial (HFC) systems are good examples of broadcast environments where a contention resolution algorithm is needed in order to allocate the multiaccess medium (in this case the upstream link) among the various nodes. Recent activities of the IEEE 802.14 working group aimed at defining the physical and medium access control (MAC) layer protocols for HFC cable networks have focused on the study and evaluation of several contention resolution solutions for inclusion in the MAC protocol specifications. In this article several contention resolution algorithms considered by the IEEE 802.14 group are reviewed. Different implementations for several well known contention resolution algorithms such as tree-based and p-persistence are presented. Their performance is evaluated in the HFC context with respect to upstream channel allocation, roundtrip delay, various traffic types, and number of stations in the network. Simulation results for configurations and scenarios of interest are also presented.
Isolation, purification, identification, synthesis, and kinetics of activity of the anticandidal component of Allium sativum, and a hypothesis for its mode of action. (1977)

Aqueous extracts of bulbs of garlic (Allium sativum L). were fungicidal for 39 of 41 recent clinical isolates of Candida albicans at 68 μg total dry weight of crude extract per ml of 2% (w/v) malt ...
SARS takes a bite of your bonus : employees' tax (2014)

Many people are shocked at the amount of tax that is deducted from their annual bonus. Here's why..
The Goldston-Pintz-Yildirim sieveand some applications (2013)

The twin prime conjecture - that there exist infinitely many pairs of "twin primes" p, p + 2 - is among the most famous problems in number theory. In 2005, Goldston, Pintz and Yildirim (GPY) made a major and unexpected breakthrough in this direction using a simple variant of the Selberg sieve. Namely, they proved that the gap between consecutive primes is infinitely often arbitrarily smaller than average. In this master’s thesis we discuss some of the key concepts and ideas behind the GPY method and results on primes in tuples and prime gaps in general. In particular, we discuss the notion of the level of distribution of the primes, and in connection with this the celebrated Bombieri-Vinogradov theorem, which gives a result of the strength of the Generalized Riemann Hypothesis in an average sense. As an application of the GPY method, we present a new result related to conjecture of Erdos-Mirsky concerning the divisor function at consecutive integers. This result is an improvement of Hildebrand’s previous work. .
Curing Behaviors and Viscoelastic of UPE Resins with Different Glycol Molar Ratios (2001)

In this study, the effects of different glycol molar ratios of unsaturated polyester(UPE) resins on the curing behaviors were investigated. The cross linking process was checked or monitored by differential scanning calorimetry(DSC) and by viscoelastic properties of rigid-body pendulum model. The knife-edge from which the pendulum is suspended, is immersed in a reaction mixture, and the change of the viscoelastic behavior brings on those of the period(T) and logarithmic decrement() of the damped free oscillations of the pendulum. The values of T and obtained are related to the dynamic modulus(E') and modulus loss(E'). The information on the viscoelastic behavior of unsaturated polyester(UPE) resins during the curing process are shown to illustrate the usefulness of the techniques. As the content of NPG in a propylene glycol(PG)/NPG glycol mixture increased, both the cycle time during cure and the change of damping during cure of UPE resin decreased.
Plasma processing of municipal solid waste (2004)

In this paper a review and assessment of the Hot Temperature Plasma Processing of Waste is presented. The environmental advantage of this method over incineration is clearly demonstrated. The present technology of Plasma Arcs and the Modern Plasma Torches Applications are also shown. An Assessment of the Heavy Duty Gasification Combined Cycle Turbines, Gasification Process, Magmavication/Vitrification process, and Environmental Engineering Protection are also described.
Propagating functional dependencies with conditions (2008)

The dependency propagation problem is to determine, given a view defined on data sources and a set of dependencies on the sources, whether another dependency is guaranteed to hold on the view. This paper investigates dependency propagation for recently proposed conditional functional dependencies (CFDs). The need for this study is evident in data integration, exchange and cleaning since dependencies on data sources often only hold conditionally on the view. We investigate dependency propagation for views defined in various fragments of relational algebra, CFDs as view dependencies, and for source dependencies given as either CFDs or traditional functional dependencies (FDs). (a) We establish lower and upper bounds, all matching , ranging from PTIME to undecidable. These not only provide the first results for CFD propagation, but also extend the classical work of FD propagation by giving new complexity bounds in the presence of finite domains. (b) We provide the first algorithm for computing a minimal cover of all CFDs propagated via SPC views; the algorithm has the same complexity as one of the most efficient algorithms for computing a cover of FDs propagated via a projection view, despite the increased expressive power of CFDs and SPC views. (c) We experimentally verify that the algorithm is efficient.
Phosphorus diffusion into silicon from a spin-on source using rapid thermal processing (1992)

Diffusion of phosphorus into silicon from a doped spin-on glass source using rapid thermal processing is described. The structural and electrical characteristics of the resulting shallow junctions including atomic and carrier concentration profiles, sheet resistance, as well as the effects on bulk carrier transport properties were studied and compared to those resulting from the use of conventional furnace heating. The results show that sheet resistance as low as 15 Ω/⧠ and surface carrier concentration higher than 1 × 1020 cm−3 are obtained in the annealed samples. Furthermore, a gettering effect is observed as the minority-carrier diffusion length measured by the surface photovoltage technique is improved after processing.
Adhesion of Lactobacillus isolates to intestinal epithelial cells of chicken (1996)

A total of 46 Lactobacillus isolates obtained from chicken intestine were assessed on their ability to adhere to the chicken ileal epithelial cell (IEC) in vitro. Twelve out of the 46 isolates showed moderate to good ability to adhere to the IEC. Temperature (between 4 degrees C and 42 degrees C) did not affect attachment. Incubation (contact) time of 30 min was found to be insufficient for the attachment of bacteria to the IEC, but contact time beyond 1 h did not increase this ability. The pH values (4-7) of the suspending buffer did not have any significant effect on the attachment of bacteria to the IEC, but at pH 8 it was reduced significantly (P < 0.05).
Nonequilibrium fluctuation-dissipation theorem of Brownian dynamics (2008)

Studying the Brownian motion of a system driven by an external control from one macroscopic state to another macroscopic state, this paper presents the derivation of a nonlinear fluctuation-dissipation theorem (FDT). The new FDT relates the nonequilibrium work to the equilibrium free-energy difference in a very simple manner. It is valid wherever the Brownian dynamics is applicable. It recovers the well-known Crooks fluctuation theorem (CFT) within the quasiequilibrium regime where the dissipative work is nearly zero. It will also be shown that the CFT's fundamental assumption of microscopic reversibility is not obeyed in experiments such as mechanically unfolding biological molecules, in which the external driving forces depend on the system's coordinates.
The Use of Secondary Aromatic Diamines in Rigid Isocyanurate-Based Foams (1993)

Commercial isocyanurate foams are generally modified with urethane groups. Other groups, such as amide, imide, carbodiimide, or oxazolidone linkages, have been used to modify such foams in order to improve physical properties (brittleness, friability). In the present work, urea modification was studied through the addition of a secondary aromatic diamine. The urea modification was studied in urethane-polyisocyanurate foams as well as foams in which the aromatic secondary diamine was the only source of active hydrogen. Exceptions were those foams in which water was used as the blowing agent. High isocyanate indices were employed so that the latter foams contained only urea and isocyanurate linkages. These foams were modified in the above manner in an effort to create a highly fire-resistant foam since the thermal stability and the rigidity of urea groups are known to be higher than that of urethane groups. The introduction of the aromatic secondary diamine into rigid foams has been shown to result in significantly improved compressive strength values, especially perpendicular to foam rise. This has led to the improvement of the isotropy of the foams. This improvement was verified by optical microscopy studies of the cell structure. These studies indicate that the incorporation of the additive resulted in much smaller cells with less elongation in the rise direction. As a result of the finer cells, slightly lower k-factors were obtained. This observation was true for freshly made foam samples as well as for samples aged at —20°C and 70°C. The dimensional stabilities of the aged samples were also consistent with these observations in that the addition of the aromatic diamine resulted in improved stabilities.
Preoperative evaluation of the patient with liver disease. (1991)

Patients with underlying liver disease have an increased surgical risk. Prediction of surgical risk is based on the degree of liver dysfunction, the type of surgery, and the preoperative clinical status of the patient. The medical consultant must determine the type of liver disease (acute or chronic) and the degree of impairment of liver function (based on physical examination and laboratory data). Any abnormalities should be corrected prior to surgery. Elective surgery should be postponed in patients with decompensated cirrhosis (class B and C) and acute hepatitis until the patient improves. The consultant internist's care of the patient should continue during the early postoperative course to monitor any deterioration in liver function.
Comparative pharmacokinetics and bioavailability of flavonoid glycosides of Ginkgo biloba after a single oral administration of three formulations to healthy volunteers. (1997)

Eighteen healthy volunteers received three different formulations of Ginkgo biloba: capsules (A) and drops (B) (delivered by Agon Pharma), and tablets (C) (Tebonin-Dr. W. Schwabe) in equal an quantity, orally as a single dose, at an interval of at least five days. The pharmacokinetic parameters of the most important flavonoid glycosides: quercetin, kaempferol and isorhamnetin were established. The bioavailability was estimated using capsules as a standard formulation. Only the time to reach the peak concentration (tmax) of quercetin, kaempforol and isorhamnetin administered in the form of capsules, was significantly prolonged as compared with drops and tablets. Area under the curve (AUC) was the largest for formulation B for all the evaluated flavonoid glycosides, however the differences were not statistically significant. It is concluded that the three formulations of Ginkgo biloba extract are bioequivalent.
Steam cracking of hydrocarbons. 6. Effect of dibenzyl sulfide and dibenzyl disulfide on reaction kinetics and coking (1983)

The influence of aromatic sulfides on the kinetics and selectivity of hydrocarbon conversion by steam cracking and on pyrolytic coke formation was investigated in stainless steel tubular reactors with relatively large inner surface.The rate of decomposition of heptane (at 700 ‘C, 100 kPa, and a mass ratio of steam to feed 3:l) increased by 16 to 26 % , and the selectivity toward ethene decreased, if 0.1 to 1 .O % mass of dibenzyl sulfide, relative to heptane, was added. Addiiion of 1 % mass dibenzyl disulfide increased the decomposition rate of heptane by 8 % . Increasing amounts of the title compounds (0.1, 0.5% mass) in the feed decreased coking up to 70% in the pyrolysis of reformer raffinate at 820 OC, without steam. The decreased coking in turn caused an increased aromatic content in the liquid pyrolysis product mixtures. Based on the analytical results, obtained by capillary gas chromatography- mass spectrometry, reaction mechanisms are suggested.
L'éducation à la perception interculturelle en langue étrangère (2001)

info:eu-repo/semantics/published
Xenotransplantation (1994)

Transplantation of solid organs (heart, lung, liver, and kidney) from swine to humans would solve the current critical shortage of cadaver organs needed by patients with end-stage disease of these organs. In addition, transplantation between distant species (discordant xenografting) will require an understanding of a number of unique immunologic features. Discordant xenografts are rejected within minutes to hours after transplantation. This rejection is due to natural immunity by recipients never before exposed to the xenografts. In some species combinations, this fulminant rejection is due to naturally occurring pre-existing antibodies against the xenograft endothelium. In other species combinations, the xenograft activates the alternative pathway of complement. The swine to human species combination is the most clinically relevant. In this combination, natural human and private antibodies recognize alpha-galactosyl residues of glycoproteins and glycolipids. Potential future therapeutic measures to prevent natural immunity include the genetic engineering of human complement inhibitors into swine cell membranes or genetic "knock out" of the enzymes responsible for placing alpha-galactosyl residues on swine cell surfaces. There are also special considerations in acquired immunity against xenografts. Cytokines and adhesion molecules may not work across species lines. Xenograft antigens may have to be processed by host antigen-presenting cells in order to effectively stimulate the immune system.
An Efficient Distributed Algorithm for Constructing Spanning Trees in Wireless Sensor Networks (2015)

Monitoring and data collection are the two main functions in wireless sensor networks (WSNs). Collected data are generally transmitted via multihop communication to a special node, called the sink. While in a typical WSN, nodes have a sink node as the final destination for the data traffic, in an ad hoc network, nodes need to communicate with each other. For this reason, routing protocols for ad hoc networks are inefficient for WSNs. Trees, on the other hand, are classic routing structures explicitly or implicitly used in WSNs. In this work, we implement and evaluate distributed algorithms for constructing routing trees in WSNs described in the literature. After identifying the drawbacks and advantages of these algorithms, we propose a new algorithm for constructing spanning trees in WSNs. The performance of the proposed algorithm and the quality of the constructed tree were evaluated in different network scenarios. The results showed that the proposed algorithm is a more efficient solution. Furthermore, the algorithm provides multiple routes to the sensor nodes to be used as mechanisms for fault tolerance and load balancing.
Optical studies of metal-semiconductor transmutations produced by intercalation (1971)

Spectra of the alkali metal intercalation products of MoS2 and NbSe2 are interpreted in terms of a previously published band model. (see abstr. A17683 of 1970).
Laser deposition of amorphous diamond thin films assisted by O plasma (2002)

Amorphous diamond thin films have been deposited by pulsed excimer laser (XECL 308nm, 23ns, 300mj) and eched by O plasma. The films were studied with CCD microscopy, SEM, Raman spectroscopy. The films showed an increased surface particle density, a decreased optical transparency, as well as a higher sp3 content. The plasma particle have more higher energy and the duration is very short, so the plasma flux is intensive and this is suitable to deposit amorphous thin films and other metestable material. The role of O plasma have concluded, the characteristic of graphite to diamond have been discussed.
High-throughput sequencing for diagnostics of minimal residual disease in acute lymphoblastic leukemia (2017)

Diagnostics of minimal residual disease (MRD) is the most powerful prognostic tool in acute lymphoblastic leukemia. MRD testing allows to determine risk of relapse and guides treatment decision. Here we describe a new method for MRD detection based on targeted high-throughput sequencing (HTS) of rearranged immunoglobulin genes specific for leukemic clones.
[Use of different superovulation regimes and laparoscopic studies of ovarian function in African dwarf goats]. (1992)

17 African dwarf goats were treated with 4 different superovulation regimes. The results of the treatments were assessed spectroscopically and checked laparoscopically. The quantitative basis of the investigation is too small to allow statistically well-founded statements, but is indicative of distinctive trends. A proportion of 73% CL and CLA in the overall ovarian changes after treatment with 750 IE PMSG (2 days before removal of the sponge) and 125 micrograms PGF2 alpha (at the time of the sponge removal) proved an acceptable method of treating African dwarf goats as regards the requirement of labour and material as well as the superovulation effect.
LATEST DEVELOPMENTS IN PROTON THERAPY (2000)

The intent of this review is to give insight in the present status and on the prospective future of proton therapy. The major point of reference is conventional therapy with photons. Traditional radiotherapy is showing nowadays a very rapid progress using advanced dynamic beam delivery techniques and sophisticated computer algorithms for treatment planning. The new fashionable concepts in medical physics are &quot;Inverse planning &quot; and &quot;Intensity modulated therapy&quot;. Proton therapy compared to photon therapy has the advantage of the localisation of dose in depth, but implies higher costs for the accelerator and beam lines. Within the field of proton therapy the competition is between the established traditional beam delivery techniques using passive scattering and the new methods based on magnetic beam scanning. The innovative developments are compact gantries dedicated to beam scanning capable of delivering &quot;intensity modulated proton therapy&quot;. Despite many uncertainties, proton therapy is steadily gaining in socio-economical importance. About 10 hospital-based proton or heavy ion therapy facilities are now under construction or already available in the U.S.A. and Japan. Europe is waiting. 1
Mode-locked laser with pulse interleavers in a monolithic photonic integrated circuit for millimeter wave and terahertz carrier generation (2017)

This Letter presents a photonics-based millimeter wave and terahertz frequency synthesizer using a monolithic InP photonic integrated circuit composed of a mode-locked laser (MLL) and two pulse interleaver stages to multiply the repetition rate frequency. The MLL is a multiple colliding pulse MLL producing an 80 GHz repetition rate pulse train. Through two consecutive monolithic pulse interleaver structures, each doubling the repetition rate, we demonstrate the achievement of 160 and 320 GHz. The fabrication was done on a multi-project wafer run of a generic InP photonic technology platform.
A p-channel Si-gate integrated circuit technology (1975)

A general purpose p-channel Si-Gate MOS technology has been developed and characterized. The technology uses local oxidation and contains: (a) a -1.0 volt enhancement mode MOSFET, (b) a process-variable threshold voltage depletion mode MOSFET, and (c) an n/p/n process-variable gain bipolar output device. Application of the technology to beam leaded high voltage RAM circuits has created a family of special memory products for use within the Bell System. Additionally, by making use of the depletion mode MOSFET and the bipolar output device, high speed, low voltage (5 volt) TTL compatible logic circuits are realized.
Effect of naloxone on cognitive function in vascular dementia in rats. (2002)

Naloxone could facilitate spatial learning and memory and enhance LTP in the CA1 region of hippocampus in rats with VD. It is postulated that naloxone might exert beneficial effects on cognitive function in VD in rats by modulating the synaptic plasticity in the hippocampal neuronal network.
High Piezoelectric Property and Low Dielectric Constant PZN-PZT Ceramics (2007)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Eddy current transients and forces in cryostat walls of superconducting solenoids (1988)

In a quenching superconducting magnet the decaying field induces currents in the metallic walls of its cryostat. The associated Lorentz forces stress the walls and cryogenic suspensions-an important issue with respect to magnet safety. Two methods for eddy current and force calculations in thin walls in the low dB/dt limit are presented for solenoidal magnets in concentric cylindrical walls. Elimination of circumferential induced currents by multiple azimuthal intersection into a number of insulated rectangular segments destroys rotational symmetry and results in a truly three-dimensional transient eddy current problem. For narrow segments a simple second-order differential equation for the eddy-current density is derived. A reference case is compared to results obtained with the commercial FEM-code CARMEN. For a large 4 T magnet, the currents, forces, and resulting mechanical displacements are given as an example.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Electron microscope observations on virus particles associated with a transplantable renal adenocarcinoma in BALB-cf-Cd mice. (1969)

Andervont established the BALB/cf strain of mice as a high mammary tumor strain by foster nursing original young BALB/c on C3H mothers. The occurrence of endemic adenocarcinoma in this strain was first reported from this laboratory in 1958. Since then, a substrain (BALB/cf/Cd) has been developed by inbreeding and selection, with a renal tumor incidence of 60–70%. The spontaneous tumors are transplantable and a number of renal tumor cell lines have been maintained by grafting. The present work is an electron microscope study of one of these cell lines, the C+T5, maintained through more than 200 consecutive grafting generations, particularly from the point of view of virus particles (VP) which have been found associated with the tumor cells. From their morphology, morphogenesis, and distribution in and outside the cell, these VP resemble virus particle types observed in mammary tumors and lymphomas of mice. They can be carried over in cells through the process of mitosis. The BALB/cf inbred substrain, which in our stock has retained the original high mammary tumor incidence, is free of renal tumors, whereas the new BALB/cf/Cd high renal-tumor strain can no longer produce mammary tumors. The VP described in this paper are quite different, in their morphology, localization, and morphogenesis, from the VP previously described in another transplantable renal tumor cell line of the original BALB/c strain.