gebhart/patrepeval huggingface dataset:
Nitrogen assimilation in alfalfa: isolation and characterization of an asparagine synthetase gene showing enhanced expression in root nodules and dark-adapted leaves. (1997)

Asparagine, the primary assimilation product from N2 fixation in temperate legumes and the predominant nitrogen transport product in many plant species, is synthesized via asparagine synthetase (AS; EC 6.3.5.4). Here, we report the isolation and characterization of a cDNA and a gene encoding the nodule-enhanced form of AS from alfalfa. The AS gene is comprised of 13 exons separated by 12 introns. The 5' flanking region of the AS gene confers nodule-enhanced reporter gene activity in transformed alfalfa. This region also confers enhanced reporter gene activity in dark-treated leaves. These results indicate that the 5' upstream region of the AS gene contains elements that affect expression in root nodules and leaves. Both AS mRNA and enzyme activity increased approximately 10- to 20-fold during the development of effective nodules. Ineffective nodules have strikingly reduced amounts of AS transcript. Alfalfa leaves have quite low levels of AS mRNA and protein; however, exposure to darkness resulted in a considerable increase in both. In situ hybridization with effective nodules and beta-glucuronidase staining of nodules from transgenic plants showed that AS is expressed in both infected and uninfected cells of the nodule symbiotic zone and in the nodule parenchyma. RNA gel blot analysis and in situ hybridization results are consistent with the hypothesis that initial AS expression in nodules is independent of nitrogenase activity.
Preparation and evaluation of high-lignin content cellulose nanofibrils from eucalyptus pulp (2018)

High Klason lignin content (23 wt%) cellulose nanofibrils (LCNF) were successfully isolated from eucalyptus pulp through catalyzed chemical oxidation, followed by high-pressure homogenization. LCNFs had a diameter of ca. 13 nm according to AFM evaluation. Dense films were obtained through vacuum filtration (nanopaper) and subjected to different drying methods. When drying under heat and mild vacuum (93 °C, 95 kPa) a higher water contact angle, lower roughness and oxygen transmission rate were observed, compared to those drying at room temperature under compression conditions. DSC experiments showed difference in signals associated to Tg of LCNF compared to CNF produced from spruce bleached pulp through enzymatic pre-treatment. The LCNF-based nanopaper showed mechanical properties slightly lower than for those made from cellulose nanofibrils, yet with increased hydrophobicity. In summary, the high-lignin content cellulose nanofibrils proved to be a suitable material for the production of low oxygen permeability nanopaper, with chemical composition close to native wood.
Creation of Dirac Monopoles in Spinor Bose-Einstein Condensates (2009)

We demonstrate theoretically that, by using external magnetic fields, one can imprint pointlike topological defects on the spin texture of a dilute Bose-Einstein condensate. The symmetries of the condensate order parameter render this topological defect to be accompanied with a vortex filament corresponding to the Dirac string of a magnetic monopole. The vorticity in the condensate coincides with the magnetic field of a magnetic monopole, providing an ideal analogue to the monopole studied by Dirac.
Learning steatosis staging with two-dimensional Convolutional Neural Networks: comparison of accuracy of clinical B-mode with a co-registered spectrogram representation of RF Data (2020)

We explore the potential of ultrasound raw data as an alternative for non-alcoholic fatty liver disease (NAFLD) staging based on two-dimensional Convolutional Neural Networks (CNNs). Learning is performed on a stacked spectral representation of RF data and compared to co-registered clinical B-mode patches. Our initial results show a superior accuracy with RF data compared to B-mode. Early steatosis stages were classified more accurately than advanced steatosis stages.
Optimal decoding of convolutional-coded physical-layer network coding (2014)

This paper investigates the decoding process of convolutional-coded physical-layer network coding (PNC) systems. Specifically, we put forth a joint channel-decoding network coding (Jt-CNC) algorithm, based on belief propagation (BP), for convolutional-coded PNC. Previously proposed XOR and channel decoding (XOR-CD) algorithm and reduced-state Viterbi algorithm are not optimal. Our Jt-CNC decoder is BER-optimal with feasible computational complexity. Simulations show that Jt-CNC outperforms XOR-CD and reduced-state Viterbi by 2dB. Furthermore, Jt-CNC is more resilient to phase offset.
Molecular Dynamics with Ultrafast X-rays (2012)

Ultrafast x-rays from high harmonic generation make possible new studies in molecular dynamics, for example of dynamics induced by ionizing radiation. I discuss our work on dynamics in polyatomic molecules, and other recent results.
Recent Reviews. 43 (1997)

Reviews are listed in order of appearance in the sources indicated. In multidisciplinary review journals, only those reviews which fall within the scope of this Journal are included. Sources are listed alphabetically in three categories: regularly issued review journals and series volumes, contributed volumes, and other monographs. Titles are numbered serially, and these numbers are used for reference in the index. Major English-language sources of critical reviews are covered. Encyclopedic treatises, annual surveys such as Specialist Periodical Reports, and compilations of symposia proceedings are omitted. This installment of Recent Reviews covers principally the middle part of the 1996 literature. Previous installment: J. Org. Chem. 1996, 61(20), 7222-8. These Recent Review articles are now also available in a database form on the ACS Organic Division WWW site http://www.organic.emory.edu/acsorg.
Development of a broadband superluminescent diode based on self-assembled InAs quantum dots and demonstration of high-axial-resolution optical coherence tomography imaging (2019)

Abstract We developed a near-infrared (NIR) superluminescent diode (SLD) based on self-assembled InAs quantum dots (QDs) and demonstrated high-axial-resolution optical coherence tomography (OCT) imaging using this QD-based SLD (QD-SLD). The QD-SLD utilized InAs QDs with controlled emission wavelengths as a NIR broadband light emitter, and a tilted waveguide with segmented electrodes was prepared for edge-emitting broadband electroluminescence (EL) spanning approximately 1–1.3 μ m. The bandwidth of the EL spectrum was increased up to 144 nm at a temperature of 25 °C controlled using a thermoelectric cooler. The inverse Fourier transform of the EL spectrum predicted a minimum resolution of 3.6 μ m in air. The QD-SLD was subsequently introduced into a spectral-domain (SD)-OCT setup, and SD-OCT imaging was performed for industrial and biological test samples. The OCT images obtained using the QD-SLD showed an axial resolution of ~4 μ m, which was almost the same as that predicted from the spectrum. This axial resolution is less than the typical size of a single biological cell (~5 μ m), and the practical demonstration of high-axial-resolution OCT imaging shows the application of QD-SLDs as a compact OCT light source, which enables the development of a portable OCT system.
Iteratively reweighted compressive sensing based algorithm for spectrum cartography in cognitive radio networks (2014)

Spectrum cartography is the process of constructing a map showing Radio Frequency signal strength over a finite geographical area. In our previous work we formulated spectrum cartography as a compressive sensing problem and we illustrated how cartography can be used in the context of discovering spectrum holes in space that can be exploited locally in cognitive radio networks. This paper investigates the performance of compressive sensing based approach to cartography in a fading environment where realtime channel estimation is not feasible. To accommodate for lack of channel information we take an iterative approach. We extend the well-known iteratively reweighted ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> minimisation approach by exploiting spatial correlation between two points in space. We evaluate the performance in an urban environment where Rayleigh fading is prominent. Our numerical results show a significant improvement in the probability of accurately making a spectrum sensing decision, in comparison to the well-known weighted approach and the traditional compressive sensing based method.
Estudio de factibilidad para el montaje del autocinema cinecar en la ciudad de Medellín. (2010)

Introduccion
1. Descripcion del problema. --
2. Delimitacion. --
2.1 Delimitacion espacial. --
2.2 Delimitacion temporal. --
2.3 Delimitacion actoral. --
3. Justificacion. --
4. Objetivos. --
4.1 Objetivo general. --
4.2 Objetivos especificos. --
5. Marco teorico. --
5.1 Resena historica. --
5.1.1 Ingenieria del proyecto. --
5.1.1.1 Proyector. --
5.1.1.2 Consola de sonido. --
5.1.1.3 Car-audio. --
5.1.1.4 Pantalla. --
5.2 Bases teoricas. --
5.2.1 Cine. --
5.2.2 Imagen. --
5.2.3 Ilusion optica. --
5.2.4 Proyeccion de imagenes. --
5.2.5 Guion. --
5.2.6 Peliculas. --
5.2.7 Tecnologia. --
5.2.8 Sonido. --
5.2.9. Proyector. --
5.2.10 Pantalla. --
5.2.11 Consola. --
5.2.12 Vehiculos. --
5.2.13 Autocine. --
5.2.14 Video. --
5.2.15 Que es el Leasing. --
5.3 Marco legal. --
6. Hipotesis. --
7. Variables. --
8. Metodologia general del trabajo. --
8.1 Tipo de investigacion. --
8.2 Metodo de investigacion. --
8.3 Fuentes y tecnicas de recoleccion de informacion. --
8.3.1 Fuentes Primarias. --
8.3.2 Fuentes Secundarias. --
9. Poblacion y muestra. --
9.1 Poblacion. --
9.2 Determinacion de muestra. --
10. Aspectos administrativos. --
10.1 Recursos humanos. --
10.2 Recursos fisicos – tecnicos. --
10.3 Recursos financieros. --
10.4 Cronograma de actividades. --
11. Diseno de analisis. --
11.1 Investigacion del mercado. --
11.1.1 Encuesta. --
11.1.2 Tabulacion y analisis de la encuesta. --
11.1.3 Analisis global. --
11.1.4. Actividades de mercadotecnia. --
1.1.1.5 Objetivos de mercadeo. --
11.1.6 Estrategias. --
11.1.7 Tactica. --
11.1.8 Marketing. --
11.1.9 Sectorizacion. --
11.1.10 Estratificacion. --
11.1.11 Rangos de Edades. --
11.1.12. Sitios estrategicos. --
11.2 Estructura organizacional y administrativa. --
11.2.1 Espacios. --
11.2.2 Servicios. --
11.2.3 Importancia. --
11.2.4 Logotipo. --
11.2.5 Slogan. --
11.2.6 Estudio tecnico o ingenieria del proyecto. --
11.2.7 Tamano del proyecto. --
11.2.8 Organigrama Cinecar. --
11.2.9 Estudio Administrativo. --
11.2.10 Analisis perfil de capacidad interna: PCI. --
11.2.11 analisis del perfil de oportunidades y amenazas del entorno: POAM. --
11.2.12 Dofa (Debilidades, Oportunidades, Fortalezas y Amenazas). --
11.2.13 Manual de funciones. --
11.2.14 Requisitos legales de constitucion sociedad LTDA. --
11.3 Viabilidad financiera. --
11.3.1 Estudio Factibilidad: Credito para comprar terreno. --
11.3.2 Estudio Factibilidad: Estudio financiero arrendando terreno. --
11.3.3 Estudio Factibilidad: Adquisicion por leasing. --
12. Conclusiones. --
13. recomendaciones. --
Bibliografia. --
Anexos.
Brain Tissue Mapping and Segmentation by MRI-based Blind-Source-Separation Techniques (2006)

Brain or any other tissue signatures are considered to be linear combinations of tissue components. Mixtures of such tissue components are "blindly" separated by means of geometrical sparse component analysis. The original set of at least two MR images, acquired by using the spin-echo or spoiled FLASH techniques with specific set of Tr and Te, are sparsified by using multiple wavelets and curvelets. The algorithms and techniques are investigated by separating simulated MRI images, where the ground truth is available. They are then applied to clinical data. Both iterative FCM and robust regression lend themselves to good estimation of the mixing matrix and thereby separation of the tissue components. Further improvements are discussed.
Molecular Cloning and Expression of a Gene EncodingCryptosporidium parvumGlycoproteins gp40 and gp15 (2000)

Cryptosporidium parvum is a significant cause of diarrheal disease worldwide. The specific molecules that mediate C. parvum-host cell interactions and the molecular mechanisms involved in the pathogenesis of cryptosporidiosis are unknown. In this study we have shown that gp40, a mucin-like glycoprotein, is localized to the surface and apical region of invasive stages of the parasite and is shed from its surface. gp40-specific antibodies neutralize infection in vitro, and native gp40 binds specifically to host cells, implicating this glycoprotein in C. parvum attachment to and invasion of host cells. We have cloned and sequenced a gene designated Cpgp40/15 that encodes gp40 as well as gp15, an antigenically distinct, surface glycoprotein also implicated in C. parvum-host cell interactions. Analysis of the deduced amino acid sequence of the 981-bp Cpgp40/15 revealed the presence of an N-terminal signal peptide, a polyserine domain, multiple predicted O-glycosylation sites, a single potential N-glycosylation site, and a hydrophobic region at the C terminus, a finding consistent with what is required for the addition of a GPI anchor. There is a single copy of Cpgp40/15 in the C. parvum genome, and this gene does not contain introns. Our data indicate that the two Cpgp40/15-encoded proteins, gp40 and gp15, are products of proteolytic cleavage of a 49-kDa precursor protein which is expressed in intracellular stages of the parasite. The surface localization of gp40 and gp15 and their involvement in the host-parasite interaction suggest that either or both of these glycoproteins may serve as effective targets for specific preventive or therapeutic measures for cryptosporidiosis.
Methoden zur Evaluierung der microaeroben 2,3-Butandiol Produktion basierend auf Online-Prozessüberwachungstechnologien (2019)

Biotechnological production of platform chemicals from renewable carbon sources is a promising measure to decrease the consumption of fossil resources in the chemical industry and the fuel sector. Reduced platform chemicals like 2,3-butanediol are often produced in microaerobic cultivation processes. Under these oxygen-limited conditions, the precise adjustment of the oxygen availability is crucial to obtain the desired metabolic activity. In this thesis, 2,3-butanediol production with Bacillus licheniformis was used as model bioprocess to develop online monitoring-based methodologies to assess microaerobic cultivations. A fast and reliable shake flask methodology is presented to determine the optimum oxygen availability. Comparable results and well-characterized experimental conditions were obtained by application of a defined two-stage cultivation profile and a novel technique to determine the maximum 2,3-butanediol concentration. As the obtained results are applicable to stirred tank reactor cultivations, the product and by-product spectrum can be optimized at reduced effort and costs. Still, a drawback for microaerobic process development is the limited availability of online monitoring techniques to determine the metabolic activity with respect to oxygen availability. Therefore, online monitoring of the respiratory quotient was combined with stoichiometric analyses to reveal the metabolic activity during distinct cultivation phases. Furthermore, monitoring of the redox potential was used to monitor the dissolved oxygen tension (DOT) at trace levels that cannot be resolved with conventional DOT probes. The influence of DOT, pH and media components on the redox potential was characterized and quantified in abiotic experiments. On this basis, a corrected redox potential is obtained that solely reflects changes of the DOT, even if the pH strongly fluctuates during the cultivation. Overall, the developed methodologies are transferable to other microorganisms or products and increase the information content from online monitoring during microaerobic cultivations. Respiratory quotient and redox potential provide detailed and complementary information on the metabolic activity during microaerobic cultivations. Together with the presented approach to investigate the effects of oxygen availability, this contributes to the development of improved microaerobic cultivation processes for the production of diverse bio-based compounds.
Dephasing and lensing in high power wavelength conversion (2013)

We examine thermal in single pass CW SHG depending on focusing conditions. Temperature increase in crystals and thermal lensing effect are investigated by the effective heat capacity of devices, which is ruled by focusing conditions.
The Role of Elasticity in the Anomalous Swelling of Polymer Thin Films in Density Fluctuating Supercritical Fluids (2003)

In situ neutron reflectivity was used to investigate the effects of density fluctuations on the solubility of supercritical carbon dioxide (scCO2) in polymer thin films. Deuterated polystyrene, deuterated polybutadiene, and the corresponding random copolymer, deuterated styrene-random-butadiene copolymer, as well as deuterated poly(methyl methacrylate) were investigated. Data were obtained as a function of pressure under two isothermal conditions (T = 36 and 50 °C). All the polymer films used showed anomalous swelling and CO2 sorption on the density fluctuation ridge in the P−T phase diagram of CO2. We found that the magnitude of the swelling was a function of the elasticity of the films rather than the bulk solubility of CO2. The enhanced miscibility of the rubber/CO2 systems, which are very poor in bulk, was found to be almost identical to that of the silicon rubber/CO2 mixture, which is one of the highly miscible polymeric materials under moderate CO2 conditions.
ChemInform Abstract: Backbone Modifications of Aromatic Peptide Nucleic Acid (APNA) Monomers and Their Hybridization Properties with DNA and RNA. (2001)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Reverse Vaccinology and Genomics (2003)

The genomic revolution has had a dramatic effect on our ability to find new vaccine targets and develop effective vaccines.
Ultrasound accelerates the healing of damaged peripheral nerves in vivo (2000)

Peripheral nerve injury is a common clinical problem that often debilitates by producing significant motor and sensory deficits, as well as pain and other unpleasant sensations. Recovery is often slow. Patients with proximal injuries that require axons to regenerate over long distances to reach their target muscles or sensory receptors can take up to 2 years to recover function. Moreover, slow recovery can often be incomplete, due to the associated muscle atrophy, decrease in axonal regeneration along the pathway of the degenerating nerve, and decay in the axonal receptivity of the target tissues. In this work, we show that low-intensity therapeutic ultrasound can accelerate functional recovery in an animal model of a completely crushed peripheral nerve.
Energy distribution in the photodissociation products of the van Der Waals complex I2He (1976)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation M. S. Kim, R. E. Smalley, L. Wharton, D. H. Levy; Energy distribution in the photodissociation products of the van Der Waals complex I2He. J. Chem. Phys. 1 August 1976; 65 (3): 1216–1217. https://doi.org/10.1063/1.433146 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioThe Journal of Chemical Physics Search Advanced Search |Citation Search
A New Accelerated Durability Test Protocol for Water Oxidation Electrocatalysts of Renewable Energy Powered Alkaline Water Electrolyzers (2021)

For electrocatalysts of oxygen evolution reaction (OER), a new accelerated durability test (ADT) protocol is presented. The protocol is designed to closely mimic the fluctuations of renewable energies. The unit cycle of the current ADT protocol represents the “ON/OFF” operation mode. In the “ON” step, the electrolyzer operates under a DC current of 0.6 A cm−2. In the “OFF” step, the electrocatalyst is subjected to a constant potential that is clearly more cathodic than its OER onset potential (namely, 0.3, 0.5, and 0.7 V vs. RHE) for 10 or 60 s. The transition from the “ON” state to the “OFF” state occurs through a cathodic linear sweep voltammetry of a fast sweep rate to mimic the sudden changes in the renewable power. A NiCoOx/Ni-mesh electrode was used as a case study. The electrode showed remarkable durability under continuous operation (i = 0.6 A cm−2) for about 900 hours. However, it did suffer severe degradation after a certain number of ADT cycles, and the rate of degradation mainly depends on the potential value and the duration of the “OFF” step. Interestingly, the inclusion of the 10-sec open-circuit potential step after the “ON” step clearly mitigates the impact of energy fluctuations on the durability of OER electrocatalysts.
An externally modulated fiber-optic link test bed for characterizing link performance in a system (2003)

The design and environmental testing of a modular analog fiber-optic link are reported. Over a 10-MHz bandwidth the link noise figure was 8 dB without electronic amplification. The link performance and the systems effects with active and passive implementations of module calibration and modulator bias stabilization are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Limit cycle geometry and control in power electronic systems (2003)

The operation of self-oscillating power electronic systems, like other variable structure systems, involves limit cycles. Limit cycle geometry can be investigated prior to imposing a control law, and can be related to steady-state solution of asymptotic models. The local implications for switching surface selection for simple DC-DC and DC-AC converters are explored.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>