gebhart/patrepeval huggingface dataset:
Multi-source remote sensing data fusion: status and trends (2010)

With the fast development of remote sensor technologies, e.g. the appearance of Very High Resolution (VHR) optical sensors, SAR, LiDAR, etc., mounted on either airborne or spaceborne platforms, multi-source remote sensing data fusion techniques are emerging due to the demand for new methods and algorithms. The general fusion techniques have been well developed and applied in various fields ranging from satellite earth observation to computer vision, medical image processing, defence security and so on. Despite the fast development, the techniques remain challenging for multi-source data fusion within varying spatial and temporal resolutions. This article reviews current techniques of multi-source remote sensing data fusion and discusses their future trends and challenges through the concept of hierarchical classification, i.e., pixel/data level, feature level and decision level. This article concentrates on discussing optical panchromatic and multi-spectral data fusing methods. So far, the pixel level fusion methods have mainly focused on optical data fusion; high-level fusion includes feature level and decision level fusion of multi-source data, such as synthetic aperture radar, optical images, LiDAR and other types of data. Finally, this article summarises several trends tending to broaden the application of multi-source data fusion.
A glance into the uterus during in vitro simulation of embryo transfer (2004)

It is suggested that the catheter load should contain minimal volumes of air in order to enhance the embryos' chances of reaching the site of implantation. The viscosity of the transferred liquid should be as close as possible to that of the uterine fluid in order to avoid transport of embryos towards the cervix.
The Protective Role of Eicosapentaenoic Acid [EPA] in the Pathogenesis of Nephrolithiasis (1991)

The low incidence of atherosclerosis and other degenerative diseases including stone disease in the Greenland Eskimo has been attributed to their high consumption of oily fish with its high concentration of eicosapentaenoic acid (EPA). Man cannot synthesis EPA from the precursor essential fatty acid, linolenic acid, and can only assimilate preformed EPA present in fish and fish oil, to bring about a change in the pathway of eicosanoid metabolism from the n-6 to the n-3 series. With a westernised diet the oxygenated products of renal prostaglandin synthesis are metabolites of the n-6 series and these are known to play an important role in several pathophysiological states including stone disease. Our previous studies have shown a relationship between prostaglandin activity and urinary calcium excretion and it would seem that the initiating factor/s for stone formation trigger the mechanisms for prostaglandin synthesis resulting in the biochemical abnormalities associated with stone disease. The Eskimo may be protected from these events by possession of an eicosanoid metabolism that follows an n-3 pathway. To test this hypothesis experiments were performed using an animal model of nephrocalcinosis. The animals were divided into three groups; one group was given an intra-peritoneal injection of 10% calcium gluconate daily for 10 days to induce nephrocalcinosis; a second group was fed MaxEPA fish oil before and during the calcium gluconate injections and a third group only received an intra-peritoneal injection of N saline. A group of 12 recurrent, hypercalciuric/hyperoxaluric stone-formers were treated with fish oil for eight weeks to study the effects on solute excretion. Nephrocalcinosis, which was readily produced in the control animals, was prevented in the experimental animals by pre-treatment with fish oil and urine calcium excretion was significantly reduced. The urinary calcium and oxalate excretion in the recurrent, hypercalciuric stone-formers was significantly reduced with fish oil treatment over an eight week period. There were no untoward side-effects. These studies indicate that the incorporation of EPA in the diet as a substitute metabolic pathway could be a unique way of correcting the biochemical abnormalities of idiopathic urolithiasis.
Acute lung injury and the acute respiratory distress syndrome: pathophysiology and treatment. (2010)

Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) represent a spectrum of acute respiratory failure with diffuse, bilateral lung injury and severe hypoxemia caused by non-cardiogenic pulmonary edema. Failure may be initiated by pulmonary or extrapulmonary insults (e.g., pneumonia, sepsis, trauma, aspiration) that increase alveolar epithelial endothelial permeability, flood alveoli, and reduce lung compliance. The only treatment proven to improve survival is mechanical ventilation using a 'lung protective strategy' with tidal volume =6 mL/kg predicted body weight. Although mortality can exceed 50%, survivors have a good prognosis for recovery of lung function.
Enhanced thermoelectric figure of merit in SiGe alloy nanowires by boundary and hole-phonon scattering (2011)

We report the thermoelectric characteristics of individual p-type SiGe alloy nanowires for diameters of 100 to 300 nm and temperatures between 40 to 300 K. A technique that allows for electrical and thermal characterization on the same nanowire was developed in this work. Experimental data provide evidence of the scattering of low-frequency phonons by the boundary of the nanowires. The thermal conductivities for SiGe alloy nanowires with different free carrier concentrations reveal that the long free path phonons are also scattered by hole-phonon interactions. Combined boundary and hole-phonon scattering mechanisms with alloy scattering resulted in thermal conductivities as low as 1.1 W/m-K at 300 K, which is one of the lowest measured for SiGe alloys and is comparable to that of bulk silica. The enhanced thermal properties observed in this work yielded ZT close to 0.18 at 300 K—more than a factor of 2 higher than the bulk SiGe alloy.
Design and Implementation of BSP in the Embedded Linux (2005)

This paper introduces the BSP in embedded systems and its roles,and expounds the design and implement-ation in different development phases in the embedded Linux system based on PXA250.
NQO1-Dependent Redox Cycling of Idebenone: Effects on Cellular Redox Potential and Energy Levels (2011)

Short-chain quinones are described as potent antioxidants and in the case of idebenone have already been under clinical investigation for the treatment of neuromuscular disorders. Due to their analogy to coenzyme Q10 (CoQ10), a long-chain quinone, they are widely regarded as a substitute for CoQ10. However, apart from their antioxidant function, this provides no clear rationale for their use in disorders with normal CoQ10 levels. Using recombinant NAD(P)H:quinone oxidoreductase (NQO) enzymes, we observed that contrary to CoQ10 short-chain quinones such as idebenone are good substrates for both NQO1 and NQO2. Furthermore, the reduction of short-chain quinones by NQOs enabled an antimycin A-sensitive transfer of electrons from cytosolic NAD(P)H to the mitochondrial respiratory chain in both human hepatoma cells (HepG2) and freshly isolated mouse hepatocytes. Consistent with the substrate selectivity of NQOs, both idebenone and CoQ1, but not CoQ10, partially restored cellular ATP levels under conditions of impaired complex I function. The observed cytosolic-mitochondrial shuttling of idebenone and CoQ1 was also associated with reduced lactate production by cybrid cells from mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS) patients. Thus, the observed activities separate the effectiveness of short-chain quinones from the related long-chain CoQ10 and provide the rationale for the use of short-chain quinones such as idebenone for the treatment of mitochondrial disorders.
System Level Concurrency Control for Distributed Database Systems (1978)

A distributed database system is one in which the database is spread among several sites and application programs “move” from site to site to access and update the data they need. The concurrency control is that portion of the system that responds to the read and write requests of the application programs. Its job is to maintain the global consistency of the distributed database while ensuring that the termination of the application programs is not prevented by phenomena such as deadlock. We assume each individual site has its own local concurrency control which responds to requests at that site and can only communicate with concurrency controls at other sites when an application program moves from site to site, terminates, or aborts. This paper presents designs for several distributed concurrency controls and demonstrates that they work correctly. It also investigates some of the implications of global consistency of a distributed database and discusses phenomena that can prevent termination of application programs.
The pharmacokinetics, pharmacodynamics and tolerability of dabigatran etexilate, a new oral direct thrombin inhibitor, in healthy male subjects (2007)

These data suggest that dabigatran etexilate is a promising novel oral DTI with predictable PK and PD characteristics and good tolerability. Further investigation of dabigatran etexilate for the treatment and prophylaxis of patients with arterial and venous thromboembolic disorders, acute coronary syndromes and other medical conditions is warranted.
SkyTracer: Towards fine-grained identification for Skype traffic via sequence signatures (2014)

Skype has been a typical choice for providing VoIP service nowadays and is well-known for its broad range of features, including voice-calls, instant messaging, file transfer and video conferencing, etc. Considering its wide application, from the viewpoint of ISPs, it is essential to identify Skype flows and thus optimize network performance and forecast future needs. However, in general, a host is likely to run multiple network applications simultaneously, which makes it much harder to classify each and every Skype flow from mixed traffic exactly. Especially, current techniques usually focus on host-level identification and do not have the ability to identify Skype traffic at the flow-level. In this paper, we first reveal the unique sequence signatures of Skype UDP flows and then implement a practical online system named SkyTracer for precise Skype traffic identification. To the best of our knowledge, this is the first time to utilize the strong sequence signatures to carry out early identification of Skype traffic. The experimental results show that SkyTracer can achieve very high accuracy at fine-grained level in identifying Skype traffic.
Deep level defects which limit current gain in 4H SiC bipolar junction transistors (2007)

The authors employ a very sensitive electrically detected electron spin resonance technique called spin dependent recombination to observe recombination centers in fully processed 4H SiC n-p-n bipolar junction transistors. Their measurements indicate that the observed dominating recombination defect in these transistors is an intrinsic center of high symmetry, most likely a vacancy. This defect likely plays a dominating role in limiting the current gain in these 4H SiC devices.
Multi-sensor data fusion for checking plausibility of V2V communications by vision-based multiple-object tracking (2014)

Automated vehicles require an adequate and reliable perception of the surrounding world in order to make good decisions. Using vehicle-to-vehicle (V2V) communication to exchange location data (i.e. time, position, heading and speed) can improve the perception beyond the capabilities of traditional on-board sensors (e.g. radar, lidar). However, it is vital to trust the data before it is being used. Cryptographic mechanisms can protect the exchange and authenticity of data but do not guarantee the correctness of the content. In this paper we present a vision-based multi-object tracking system for checking the plausibility of V2V communication. The system is addressing the challenge of fusing relative sensor observations as provided by a MobilEye vision-system with time-delayed absolute GNSS-based measurements from Cooperative Awareness Messages (CAMs) as provided by V2V. The plausibility check is implemented in a prototype and based on a state-of-the-art multiple-object tracking algorithm. The proposed system is evaluated and validated under real-world conditions by conducting several test drives under urban conditions.
Theory and measurement for aperture coupled microstrip antenna (1990)

Interest in the use of microstrip patches for array antennas has prompted investigations into numerous feed mechanisms. One of the most interesting, which offers considerable advantages over the others, is aperture coupling. In the paper that follows, the coupling of a feedline to a rectangular patch, through an aperture in the ground plane separating them, is described. Modal field expansion is used to analyze the problem. The patch is described by the cavity model and the feedline is modeled as a transmission line. Coupling is assumed to be via a magnetic current in the aperture. Both theoretical and experimental design curves were generated and good agreement between them was obtained. Theoretical and experimental results were obtained for a single element antenna at 5 and 10 GHz respectively. This paper describes both theoretical and experimental results of work done to date.
Phenotypic and Transcriptomic Analyses of Mildly and Severely Salt-Stressed <i>Bacillus cereus</i> ATCC 14579 Cells (2009)

Bacteria are able to cope with the challenges of a sudden increase in salinity by activating adaptation mechanisms. In this study, exponentially growing cells of the pathogen Bacillus cereus ATCC 14579 were exposed to both mild (2.5% [wt/vol] NaCl) and severe (5% [wt/vol] NaCl) salt stress conditions. B. cereus continued to grow at a slightly reduced growth rate when it was shifted to mild salt stress conditions. Exposure to severe salt stress resulted in a lag period, and after 60 min growth had resumed, with cells displaying a filamentous morphology. Whole-genome expression analyses of cells exposed to 2.5% salt stress revealed that the expression of these cells overlapped with the expression of cells exposed to 5% salt stress, suggesting that the corresponding genes were involved in a general salt stress response. Upregulation of osmoprotectant, Na(+)/H(+), and di- and tripeptide transporters and activation of an oxidative stress response were noticeable aspects of the general salt stress transcriptome response. Activation of this response may confer cross-protection against other stresses, and indeed, increased resistance to heat and hydrogen peroxide could be demonstrated after preexposure to salt. A temporal shift between the transcriptome response and several phenotypic responses of severely salt-stressed cells was observed. After resumption of growth, these cells showed cellular filamentation, reduced chemotaxis, increased catalase activity, and optimal oxidative stress resistance, which corresponded to the transcriptome response displayed in the initial lag period. The linkage of transcriptomes and phenotypic characteristics can contribute to a better understanding of cellular stress adaptation strategies and possible cross-protection mechanisms.
Application of Liposomes for Development of Oral Vaccines: Study of In Vitro Stability of Liposomes and Antibody Response to Antigen Associated with Liposomes after Oral Immunization. (1997)

In order to evaluate the usefulness of liposomes as oral vaccines, the stability of liposomes and serum IgA antibody response to antigen associated with liposomes after oral administration were examined. Liposomes composed of dipalmitoylphosphatidylcholine (DPPC), dipalmitoylphosphatidylserine (DPPS), and cholesterol (Chol) (1:1:2, molar ratio), distearoylphosphatidylcholine (DSPC) and Chol (7:2, molar ratio), and DSPC, DPPS, and Chol (7:3:2 or 1:1:2, molar ratio) were stable in acidic solution (pH 2.0), bile, and pancreatin solution, whereas liposomes composed of DPPC and Chol (7:2, molar ratio) and DPPC, DPPS, and Chol (7:3:2, molar ratio) were unstable in pH 2.0 and/or bile solutions. After the oral immunization of antigen (ganglioside GM1)-containing liposomes composed of DPPC, DPPS, and Chol (1:1:2, molar ratio) to mice, the serum IgA antibody responses against ganglioside GM1 were found. Furthermore, when monophosphoryl lipid A was incorporated into liposomes containing ganglioside GM1, further augmentation of IgA responses to ganglioside GM1 was observed. On the other hand, the oral administration with liposomes composed of DPPC, Chol, and ganglioside GM1 (unstable liposomes), ganglioside GM1 mixed with liposomes composed of DPPC, DPPS and Chol, and ganglioside GM1 alone was unable to induce any detectable anti-ganglioside GM1 IgA antibody responses. These results suggest that liposomes which showed the stability to acidic solution, bile, and pancreatin solution would serve effectively as an oral delivery vehicle for inducing mucosal immune responses.
Fluorescent properties of merocyanines based on 1,3-indandione (2015)

We have studied the fluorescent properties of vinylogous series of merocyanine dyes based on 1,3-indandione and heterocycles of different electron-donating powers. Using a set of solvents with polarities lying in a wide range, we have analyzed the dependence of their solvatofluorochromism on the key structural parameters—the donor heterocyclic group and the length of the polymethine chain. It has been found that the signs of solvatochromism and solvatofluorochromism of merocyanines under study coincide. However, the solvent more weakly affects the position and the shape of their fluorescence bands than in the case of absorption spectra, especially, for negatively solvatochromic derivatives of 1,3-diphenylbenzimidazole. We have found that, upon passage from polar aprotic solvents to alcohols, the fluorescence quantum yields of dyes under investigation (irrespective of the sign of their solvatochromism) decrease. We have performed quantum-chemical calculations of merocyanine molecules by the DFT/B3LYP/6-31G(d,p) and TDDFT methods, including calculations taking into account the polarity of the medium by the PCM method. Based on the analysis of electronic transitions, we have explained the fluorescence quenching of indandione merocyanines in alcohol, which is unusual for carbonyl-containing intraionic dyes.
Tunable Antenna Design Procedure and Harmonics Suppression Methods of the Tunable DVB-H Antenna for Mobile Applications (2007)

Using a high-efficiency tunable antenna to cover wide band with good match is an interesting topic, especially in the case when the physical size of the terminal and the antenna is too small to allow for coverage of the full band. A design procedure for tunable mobile antennas is presented. A tunable antenna with the volume of only 6 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> has been designed and fabricated to cover the DVB-H band (470 MHz to 702 MHz) with a return loss of at least 7 dB. A limitation of the tunable DVB-H antenna is its non-linear behavior when it is recquired to coexist with the GSM transmitter in the same mobile phone. The harmonics generation and radiation is the most critical issue. Low-loss methods to suppress the harmonics are presented and the second tunable prototype DVB-H antenna shows excellent linearity.
Preparation of 3-acetyl-2-hydroxyindoles via rhodium carbenoid aromatic carbon-hydrogen insertion (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation of 3-acetyl-2-hydroxyindoles via rhodium carbenoid aromatic carbon-hydrogen insertionNola Etkin, Suresh D. Babu, Catherine J. Fooks, and Tony DurstCite this: J. Org. Chem. 1990, 55, 3, 1093–1096Publication Date (Print):February 1, 1990Publication History Published online1 May 2002Published inissue 1 February 1990https://pubs.acs.org/doi/10.1021/jo00290a052https://doi.org/10.1021/jo00290a052research-articleACS PublicationsRequest reuse permissionsArticle Views715Altmetric-Citations60LEARN 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
3D navigation and collision avoidance for nonholonomic aircraft‐like vehicles (2010)

Abstract This paper extends the Navigation Function methodology to the case of 3D nonholonomic vehicles, both in single agent and multi‐agent problems. The kinematic, nonholonomic, three‐dimensional model considered is chosen to resemble the motion of an aircraft by preventing any movement along the lateral or perpendicular axis, as well as preventing high yaw rotation rates. The discontinuous feedback control law used is based on the artificial potential field generated by Dipolar Navigation Functions and steers the agents away from obstacles or each other and towards their destinations, while respecting the nonholonomic constraints present. The convergence properties of the proposed control strategies are formally guaranteed and verified by non‐trivial simulation results. Copyright © 2010 John Wiley & Sons, Ltd.
Synthesis and Biological Evaluation of Unsymmetrical Curcumin Analogues as Tyrosinase Inhibitors (2013)

Synthesis and biological evaluation of unsymmetrical curcumin analogues (UCAs) have been achieved. Tyrosinase inhibitory activities were found for most of the prepared synthetic UCAs. Among them, compounds containing 4-hydroxyl-substituted phenolic rings with C-2/C-4- or C-3/C-4-dihydroxyl-substituted diphenolic rings were more active (IC(50) = 1.74~16.74 μM) than 4-butylresorcinol and kojic acid, which suggested that the 4-hydroxyl groups in UCAs play a crucial role in tyrosinase inhibitory activities. The inhibition kinetics analyzed by Lineweaver-Burk plots revealed compounds 3c and 3i containing catecholic rings were mixed-competitive inhibitors, whereas compounds 3d and 3j containing resorcinolic rings were competitive inhibitors. The preliminary evaluation results of acute toxicity showed the representative 3d and 3j were non-toxic in mice dosed at 1,200 mg/kg. This research suggests that, with the advantage of being readily prepared small molecules, polyphenolic UCAs have the potential to develop into pharmacological inhibitors of tyrosinase.