gebhart/patrepeval huggingface dataset:
Synthesis and Characterization of Photoswitchable Fluorescent Silica Nanoparticles (2007)

We have designed and synthesized a new functional (amino reactive) highly efficient fluorescent molecular switch (FMS) with a photochromic diarylethene and a rhodamine fluorescent dye. The reactive group in this FMS -N-hydroxysuccinimide ester- allows selective labeling of amino containing molecules or other materials. In ethanolic solutions, the compound displays a large fluorescent quantum yield of 52 % and a large fluorescence modulation ratio (94 %) between two states that may be interconverted with red and near-UV light. Silica nanoparticles incorporating the new FMS were prepared and characterized, and their spectroscopic and switching properties were also studied. The dye retained its properties after the incorporation into the silica, thereby allowing light-induced reversible high modulation of the fluorescence signal of a single particle for up to 60 cycles, before undergoing irreversible photobleaching. Some applications of these particles in fluorescence microscopy are also demonstrated. In particular, subdiffraction images of nanoparticles were obtained, in the focal plane of a confocal microscope.
Complete characterization of the Pareto boundary of interference-coupled wireless systems with power constraints — The log-convex case (2009)

In this paper we analyze the structure of certain power-constrained utility sets, based on the axiomatic framework of log-convex interference functions. Log-convex interference functions contain convex and linear interference functions as a special case. We analyze the boundary of the set. It is shown how Pareto optimality of boundary points depends on the interference coupling between the users. Finally, we investigate feasible sets of signal-to-interference-plus-noise ratios for individual power constraints and a sum power constraint. We show certain properties that are desirable, e.g. in the context of cooperative game theory.
Extending the Sub-Sea-Floor Biosphere (2008)

Sub-sea-floor sediments may contain two-thirds of Earth's total prokaryotic biomass. However, this has its basis in data extrapolation from ~500-meter to 4-kilometer depths, whereas the deepest documented prokaryotes are from only 842 meters. Here, we provide evidence for low concentrations of living prokaryotic cells in the deepest (1626 meters below the sea floor), oldest (111 million years old), and potentially hottest (~100 degrees C) marine sediments investigated. These Newfoundland margin sediments also have DNA sequences related to thermophilic and/or hyperthermophilic Archaea. These form two unique clusters within Pyrococcus and Thermococcus genera, suggesting unknown, uncultured groups are present in deep, hot, marine sediments (~54 degrees to 100 degrees C). Sequences of anaerobic methane-oxidizing Archaea were also present, suggesting a deep biosphere partly supported by methane. These findings demonstrate that the sub-sea-floor biosphere extends to at least 1600 meters below the sea floor and probably deeper, given an upper temperature limit for prokaryotic life of at least 113 degrees C and increasing thermogenic energy supply with depth.
Ag, Ag2S, and Ag2Se Nanocrystals:  Synthesis, Assembly, and Construction of Mesoporous Structures (2008)

Synthesis of mesoporous materials has become more and more important due to their wide application. Nowadays, there are two main ideas in their preparation. One is focused on the templating method. The other is based on metal-organic frameworks (MOFs) constructed from molecular building blocks. Herein, we exploit a new idea for their facile and general synthesis, namely, using "artificial atoms" (monodisperse nanoparticles) as uniform building blocks to construct ordered mesoporous materials. Mesoporous Ag, Ag2S, and Ag2Se have been obtained to demonstrate this concept. On the other hand, we also describe a facile method to prepare the "building blocks". Ag nanoparticles were obtained by direct thermal decomposition of AgNO3 in octadecylamine, and Ag2S/Ag2Se nanoparticles were synthesized by reaction between sulfur or selenium powder and Ag nanoparticles formed in situ. This approach for Ag, Ag2S, and Ag2Se nanoparticles is efficient, economical, and easy to scale up in industrial production.
Indústria química: evolução recente, problemas e oportunidades (2007)

RECENT DEVELOPMENTS, PROBLEMS AND OPPORTUNITIES. Chemical industry underwent a significant upturn in the past few years. In Brazil, the position of this industry has been continuously strengthened as the second largest industrial sector. Current circumstances are discussed, especially the need for increased innovation, the impacts of nanotechnology, biotechnology and information technologies. Some misconceptions on the Brazilian chemical industry are criticized and recent improvements are described, including those related to environmental protection, to conclude that its prospects are very good, considering both the availability of basic raw materials (oil, natural gas, agribusiness products and minerals), the growing demand and increased competitiveness.
A Simple and Compact Fiber Modal Adapter for Upgrading 850 nm Multimode Fibers for Fundamental Mode Transmission at 1310 nm (2020)

We propose a simple and compact adapter using specially designed modal conditioning single-mode fiber for fundamental mode transmission through multimode fiber and demonstrate error-free transmission over 1-km multimode fiber using a 100G CWDM4 transceiver.
Effect of Acceleration Time on the Crystal Growth and Electrical Properties in Polythiophene Thin Film during Spin Coating Process (2021)

본 연구에서는 poly(3-hexylthiophene)(P3HT)을 양용매인 클로로포름과 디클로로벤젠에 각각 용해한 후 스핀코팅 시 회전 속도에 도달하는 시간을 달리하여 박막을 제조하였다. 회전 속도에 도달하는 시간을 1초부터 5초로 다양하게 조절하여 박막제조 시 초기에 형성되는 P3HT 결정 생성량을 증가시켰다. 최종 회전 속도에 도달하는 시간이 1초인 경우에는 초기에 형성된 결정 생성량이 적어서 낮은 결정성의 박막이 제조되었으나 가속 시간이 증가함에 따라 높은 결정화도를 가진 박막이 제조되었다. 가속도뿐만 아니라 용매의 비점에 따라서 분자들의 결정성장이 달라지는 것을 관찰하였다. 그 결과 스핀코팅 시 최적의 공정조건을 선택하여 고분자 박막의 결정화도와 전기적 성능을 획기적으로 향상시킬 수 있었다.
Preparation, characterization, and in vitro osteoblast functions of a nano-hydroxyapatite/polyetheretherketone biocomposite as orthopedic implant material (2014)

A bioactive composite was prepared by incorporating 40 wt% nano-hydroxyapatite (nHA) into polyetheretherketone (PEEK) through a process of compounding, injection, and molding. The mechanical and surface properties of the nHA/PEEK composite were characterized, and the in vitro osteoblast functions in the composite were investigated. The mechanical properties (elastic modulus and compressive strength) of the nHA/PEEK composite increased significantly, while the tensile strength decreased slightly as compared with PEEK. Further, the addition of nHA into PEEK increased the surface roughness and hydrophilicity of the nHA/PEEK composite. In cell tests, compared with PEEK and ultra-high-molecular-weight polyethylene, it was found that the nHA/PEEK composite could promote the functions of MC3T3-E1 cells, including cell attachment, spreading, proliferation, alkaline phosphatase activity, calcium nodule formation, and expression of osteogenic differentiation-related genes. Incorporation of nHA into PEEK greatly improved the bioperformance of PEEK. The nHA/PEEK composite might be a promising orthopedic implant material.
Supplementary Figure 4 from Epithelial to Mesenchymal Transition in Human Breast Epithelial Cells Transformed by 17β-Estradiol (2023)

Supplementary Figure 4 from Epithelial to Mesenchymal Transition in Human Breast Epithelial Cells Transformed by 17β-Estradiol
Dynamic Integration of a Grid Connected DFIG Wind Turbine with a Fuel Cell (2007)

This paper proposes a novel integration of a doubly- fed induction generator (DFIG) and a fuel cell. With the proposed scheme, it is possible to inject power from a DC power source like a fuel cell into the AC grid without using an additional inverter. The fuel cell is connected across the DC link of the back-to-back converters of a DFIG injecting power either into the grid or the rotor circuit. This is achieved by a low voltage DC link. Dynamic models of DFIG and PEM fuel cell are derived which are used to simulate the integrated system. Through vector control, active and reactive power generated by the DFIG is controlled. In addition, power factor correction can also be achieved. The complete system was simulated in Matlab/Simulink and an experimental setup was built to validate the proposed scheme. Simulation and experimental results are presented to support the integrated system.
Convertidor dc–ac de alta eficiencia basado en el modulador EG8010 para implementar en sistemas energéticos alternativos (2017)

Este documento presenta los resultados del diseño y la implementación de un convertidor DC-AC con salida sinusoidal de baja distorsión armónica y pérdida de potencia eléctrica por conmutación. La investigación se encaminó al logro de altos niveles de rendimiento a bajo costo, creando un equipo competitivo en el mercado. El convertidor DC-AC es el procesador de la energía captada; es así como las mejoras en la eficiencia apuntan a elevar la viabilidad y sostenibilidad de sistemas energéticos alternativos por la disminución en costos de producción e impactar positivamente sobre la crisis energética - ambiental de la actualidad, debido al agotamiento de los combustibles fósiles y a las emisiones descontroladas de gases producidos por los sistemas tradicionales de energía eléctrica.
Measuring Water‐Extractable Phosphorus in Manure as an Indicator of Phosphorus in Runoff (2002)

Water‐extractable P (WEP) in manure is correlated with P concentration in runoff from soils amended with manure and is, thus, an effective indicator of environmental P loss. This study sought to elucidate methodological factors affecting WEP measurement in manure and to quantify errors related to two established methods of manure WEP measurement. Dairy cow ( Bos taurus ) manure, poultry ( Gallus gallus domesticus L.) (layer) manure, and swine ( Sus scrofa domestica L.) slurry were used. Varying dry matter/distilled water ratios (1 to 20:200) revealed that greater dilution of manure dry matter increased WEP (mean 1.8–5.4 g kg −1 ), likely because of the dissolution of calcium phosphates. Increasing shaking time from 1 min to 24 h, increased manure WEP concentration (average 3.7–8.2 g kg −1 ). Filtration with Whatman 1 paper filters resulted in significantly higher WEP measurements in dairy and poultry manure (4.1 g kg −1 ) than with a 0.45‐μm filtration (3.7 g kg −1 ). No significant difference was observed in the swine slurry. A rainfall‐runoff experiment using simulated rainfall was conducted to determine the effect of the individual factors on predicting dissolved‐reactive P (DRP) concentration in runoff. Comparison of regression coefficients relating manure WEP to runoff DRP concentration revealed an optimum shaking time between 30 min and 2 h, but did not support any single manure/distilled water ratio or filtration method. Replication of two established methods of manure WEP measurement resulted in coefficients of variation of 0.01 to 0.12. Results of this study support the use of a single method with a fixed manure/distilled water ratio for liquid and dry manures.
A Two-Port Multipolarization Rectenna With Orthogonal Hybrid Coupler for Simultaneous Wireless Information and Power Transfer (SWIPT) (2020)

A multipolarization rectenna, consisting of a two-port antenna fed by an orthogonal hybrid coupler and a medium-power rectifying circuit, is proposed. The orthogonal hybrid coupler has realized good isolation (S12 or S21 <; -15 dB) between the two ports, which can be, respectively, connected to rectifying circuit and/or communication device for simultaneous wireless information and power transfer (SWIPT). Due to the symmetry of the coupler, the proposed rectenna can work at multipolarization modes, i.e., the circular polarization (CP) for the single-port operation and the linear polarization (LP) for the dual-port operation. Besides, a medium-power rectifying circuit is proposed, where its maximum radio frequency (RF) to direct current (dc) power conversion efficiencies is 53.6% (simulated) and 51.1% (experimental) at the input power of 0 and 0.5 dBm, respectively. By using the coupler, the conversion efficiency and impedance matching of the rectenna can be significantly improved. In addition, the power division between the two ports is considered at different modes. Compared with other rectennas, the proposed multifunctional rectenna has merits of multiple polarizations and multimode, which can therefore be used for the incoming waves in arbitrary polarization for SWIPT and cope with the uncertainty in real-world communication environments.
See-saw nystagmus and brainstem infarction MRI finclings (1987)

A patient with see-saw nystagmus had a lesion localized by Magnetic Resonance Imaging (MRI) to the paramedian ventral midbrain with involvement of the right interstitial nucleus of Cajal. This the first MRI study of see-saw nystagmus associated with a presumed brainstem vascular event. Our findings support animal and human studies suggesting that dysfunction of the interstitial nucleus of Cajal or its connections is central in this disorder.
Does -toxin Production Contribute to the Cytotoxicity of Hypervirulent Staphylococcus aureus? (2014)

International audience
[Mineralization of dental hard tissues]. (2004)

Tooth is a composite of the three different biological mineralized tissues (dentin, enamel, and cementum) that acquired supreme mechanical properties and function necessary for the mechanical digestion of the food throughout life. The underlining mechanisms of mineralization of each of these three components are unique and different from each other. Here the focus was placed on the mineralization process of dentin and enamel of the teeth of vertebrates.
Dispersal Behavior of Diamond-Backed Terrapin Post-Hatchlings (2014)

Post-emergence dispersal behavior of hatchling turtles has been investigated in several species, and a variety of species-specific orientation patterns have been reported. In the current study, we examined the orientation and dispersal behavior of hatchling, post-hatchling, and yearling Malaclemys terrapin pileata (Mississippi Diamond-backed Terrapin) by utilizing an orientation arena on two natural nesting beaches. Each age group displayed strong orientation and dispersal towards high-marsh vegetation instead of open water. The results suggest an innate behavior in young Diamond-backed Terrapins in which they orient from open beach areas toward vegetated marsh areas. The results also stress the importance of having healthy marsh habitat adjacent to nesting areas to provide critical habitat for these vulnerable life-history stages of Diamond-backed Terrapins.
Improving Automated Segmentation of Radio Shows with Audio Embeddings (2020)

Audio features have been proven useful for increasing the performance of automated topic segmentation systems. This study explores the novel task of using audio embeddings for automated, topically coherent segmentation of radio shows. We created three different audio embedding generators using multi-class classification tasks on three datasets from different domains. We evaluate topic segmentation performance of the audio embeddings and compare it against a text-only baseline. We find that a set-up including audio embeddings generated through a non-speech sound event classification task significantly outperforms our text-only baseline by 32.3% in F1-measure. In addition, we find that different classification tasks yield audio embeddings that vary in segmentation performance.
Single-mode ion-exchanged glass waveguide power dividers (1989)

Integrated optics power dividers have potential applications in optical communication, optical signal processing, and optical sensors. Ion-exchanged glass waveguide power dividers are attractive because of their low loss, ease of fabrication, and compatibility with optical fiber. Beguin et al.1 have manufactured multimode power dividers. They employed a Y-junction configuration. This configuration is not suitable for fabrication of single-mode power dividers because it can only divide equally the guided light.
Sport und Verdauungssystem (2007)

Drug Prescribing for Patients with Chronic Kidney Disease in General Practice: a Cross-Sectional Study
Streamlined liner of the pharinx airway (SLIPATM) in lateral decubitus (2006)

Vitale, G.; Domante, C.; Greco, M.; Maisano, P.; Parini, A.; Bonacina, M.; Bellani, G.; Colombo, E.; Alberio, G.; Coppadoro, A.; Scanziani, M. Author Information
Deoxyribonucleic Acid Base Composition in the Taxonomy of Staphylococcus (1969)

Twenty-four strains of Staphylococcus aureus, including eight known mutants of S. aureus and strains growing under a variety of environmental conditions or exposed to a number of physical and chemical agents, maintained a remarkably narrow range of guanine plus cytosine (GC) content (32.4 to 35.1%). The wide range of GC content (30.7 to 40%) reported in the literature was due to the variety of methods and calculations used rather than to any substantial variation in base composition. The UV-2 "mutant" (ATCC 13680) with a GC content of 67.6% reported to be derived from S. aureus (ATCC 13679) was a species of Corynebacterium. The data presented were consistent with the concept that base composition changes only to a very slight degree by mutation.
ChemInform Abstract: SYNTHESIS AND REACTIONS OF QUINOXALINE DERIVATIVES (1984)

Abstract Alkyl‐, Benzyl‐ und Arensulfonyl‐halogenide substituieren bei der Reaktion mit dem Chinoxalinon (I) in Gegenwart von K 2 CO 3 am N‐l [Bildung der Derivate (II)], während Benzoylchlorid unter den gleichen Bedingungen den Ester (III) des zu (I) tautomeren Alkoholsbildet.
Closed Form Solutions for Bus and Tree Networks of Processors Load Sharing A Divisible Job (1993)

Optimal load allocation for load sharing a divisi ble job over processors interconnected in either a bus or a tree network is considered. The processors are either equipped with front-end processors or not so equipped. Closed form solutions for the minimum fin ish time and the optimal data allocation for each pro cessor are obtained. The performance of large sym metric tree networks is examined by aggregating the component links and processors into a single equiv alent processor. This allows an easy examination of large tree networks. In addition it becomes possible to find a closed form solution for the optimal amount of data that is to be assigned to each processor in the tree network in order to achieve the minimum finish time.
The Effects of Physicians' Computer Applications on Health Insurance Claims and Reimbursements (1979)

Physicians, hospitals and other health care providers are increasingly turning to the utilization of computers for a multitude of functions, not least of which is for the preparation of health insurance claims data. Economies found in computer applications for both providers and Blue Cross and Blue Shield Plans are moving us quickly into the anticipated age of “paperless” claims. Though there are certain problems to yet be resolved, the mutual interest of reducing paper and simplifying data collection and processing is leading us toward that mutual goal.
Consistency of Voice Frequency and Perturbation Measures in Children (2013)

Single, sustained utterances in children provide consistent measures of frequency. Perturbation is not reliably measured by such testing, but averaging multiple samples yields improved consistency. Evaluating acoustic measure stability in spontaneous speech and in sustained utterances cued by a tuning frequency can provide further insight on pediatric voice consistency.
Blaze angle of the Bausch & Lomb R4 echelle grating (1983)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Sonja Engman and Peter Lindblom, "Blaze angle of the Bausch & Lomb R4 echelle grating," Appl. Opt. 22, 2512-2513 (1983) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Brassinosteroids Act as Regulators of Tracheary-Element Differentiation in Isolated Zinnia Mesophyll Cells (1991)

Uniconazole [S-3307; (E)-l-(4-chlorophenyl)-4,4-dimethyl-2-(l,2,4-triazol-l-yl)-l-penten-3-ol], a synthetic plant-growth retardant, inhibited the differentiation of isolated mesophyll cells of Zinnia elegans L. into tracheary elements (TEs) but had no effect on cell division when it was added to the culture medium at a concentration of 3.4 μM. In the presence of uniconazole, none of the cytological events characteristic of the processes of TE differentiation, such as aggregation of actin filaments, bundling of microtubules or localized thickening and lignification of secondary walls, was observed. Uniconazole was effective when it was added to the medium within 36 h after the start of culture. Brassinosteroids (0.2 nM brassinolide or 2 μM homobrassinolide), but not gibberellin A3, counteracted the inhibitory effect of uniconazole on TE differentiation. Brassinosteroids were most effective when they were added to cultures between 24 and 30 h after the start of culture. Exogenously applied brassinosteroids promoted TE differentiation. It is suggested that the synthesis of brassinosteroids is essential for the differentiation of the cells into TEs and that uniconazole inhibits this differentiation through its inhibitory effect on the biosynthesis of brassinosteroids.
Malignant Solitary Fibrous Tumor of the Kidney: Report of a Case and Comprehensive Review of the Literature (2006)

Abstract Renal solitary fibrous tumors (SFTs) have been reported infrequently. We report a 76-year-old man with a left renal mass that had previously been shown radiographically to be stable, but was now growing. Grossly, the mass measured 12 cm, was poorly circumscribed, and invaded beyond the renal capsule. Approximately 10% of the neoplasm consisted of haphazardly arranged spindle cells admixed with dense collagenous bands, which is typical of benign SFT. However, the remainder of the mass was composed of pleomorphic, spindled sarcoma cells with frequent mitoses and foci of necrosis. Immunohistochemically, we observed CD34 labeling in the benign SFT component with loss of expression in the sarcomatous component, focal labeling for Bcl-2 protein in both areas, and absence of labeling for cytokeratin, renal cell carcinoma marker, S100 protein, CD117, and muscle markers in both areas. To our knowledge, this is the first reported case of malignant renal SFT, likely representing transformation from a histologically documented benign SFT component.
Studies of chiral separation mechanisms by VCD/FTIR spectrometry (1994)

Current work on this project has shown that VCD/FT-IR spectrometry is a viable method for the study of chiral separation mechanisms.