gebhart/patrepeval huggingface dataset:
Band gap tunability of Type II Antimonide-based superlattices (2010)

Current state-of-the art infrared photon detectors based on bulk semiconductors such as InSb or HgCdTe are now relatively mature and have almost attained the theoretical limit of performance. It means, however, that the technology can not be expected to demonstrate revolutionary improvements, in terms of device performances. In contrasts, low dimensional quantum systems such as superlattices, quantum wells, quantum dots, are still the development stage, yet have shown comparable performance to the bulk detector family. Especially for the Type II Antimony-based superlattices, recent years have seen significant improvements in material quality, structural design as well as fabrication techniques which lift the performance of Type II superlattice photodetectors to a new level. In this talk, we will discuss the advantages of Type II-superlattices, from the physical nature of the material to the practical realisms. We will demonstrate the flexibility in controlling the energy gap and their overall band alignment for the suppression of Auger recombination, as well as to create sophisticated hetero-designs.
ChemInform Abstract: Stereoselective Synthesis of Alkynylglycines and α,α′‐ Alkynyl‐Bridged Bis(glycines). (1997)

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.
Parallel and Scalable Precise Clustering (2020)

This paper describes a new technique for parallelizing protein clustering, an important bioinformatics computation for the analysis of protein sequences. Protein clustering identifies groups of proteins that are similar because they share long sequences of similar amino acids. Given a collection of protein sequences, clustering can significantly reduce the computational effort required to identify all similar sequences by avoiding many negative comparisons. The challenge, however, is to build a clustering that misses as few similar sequences (or elements, more generally) as possible.
Temperature dependence of the hyperfine parameters on Fe3O4(111) surfaces (2022)

Abstract The Verwey transition on Fe 3 O 4 (111) surface was investigated using nuclear resonant x-ray scattering (NRS). Measurements were conducted below (85 K) and above (297 and 500 K) the Verwey transition temperature. The internal magnetic field estimated from the NRS frequency spectra agreed with that of bulk Fe 3 O 4 at all measured temperatures. A clear change in the intensity ratio of the two peaks in the frequency spectra was observed across the Verwey transition. The results indicate that despite the presence of the peculiar surface electronic states which makes the changes in the electronic properties across the Verwey transition temperature blurred, the hyperfine parameters of the (111) surface show a clear change across the Verwey transition temperature.
Effect of Hyaluronidase on the Viscosity of the Aqueous Humour (1956)

BAIRANY and Scotchbrook (1954) described a hyaluronidase-sensitive barrier to aqueous outflow in the angle of the anterior chamber of enucleated cattle eyes. Their conclusions were based upon the observation that the addition of hyaluronidase to the perfusing fluid increased the rate of outflow.
Engineering the Direct Deposition of Si Nanoparticles for Improved Performance in Li-Ion Batteries (2018)

In our efforts to address the issues of Si based anodes for Li ion batteries, such as limited active mass loading, rapid capacity degradation and low scalability in manufacturing, we reported a scalable, high mass loading, and additive-free Si nanoparticles (NP) deposition based electrode, but the achieved capacity and cycle life were still limited. In order to improve the reversible capacity and cycling stability of this Si NP deposition electrode, in this work, we have investigated various substrates for Si deposition, including carbon paper (CP), preheated CP and stainless steel felt/mesh (SSF/SSM), and their influences on the electrochemical Li-ion storage performance of the Si NP electrodes. Meanwhile, protective encapsulations of amorphous carbon or silicon nitride on Si NP has been performed and the capabilities of these coatings in improving the cycling stability of Si NP electrodes have been researched. It is found that a carbon-coated Si NP deposition on an SSM substrate achieves an extraordinary cycling stability in electrochemical Li-ion storage for 500 cycles with an average capacity loss of 0.09% per cycle, showing significantly improved commercial viability of Si NP deposition based electrodes in high-energy-density Li-ion batteries.
Theory of epithelial sheet morphology in three dimensions (2013)

Morphogenesis during embryo development requires the coordination of mechanical forces to generate the macroscopic shapes of organs. We propose a minimal theoretical model, based on cell adhesion and actomyosin contractility, which describes the various shapes of epithelial cells and the bending and buckling of epithelial sheets, as well as the relative stability of cellular tubes and spheres. We show that, to understand these processes, a full 3D description of the cells is needed, but that simple scaling laws can still be derived. The morphologies observed in vivo can be understood as stable points of mechanical equations and the transitions between them are either continuous or discontinuous. We then focus on epithelial sheet bending, a ubiquitous morphogenetic process. We calculate the curvature of an epithelium as a function of actin belt tension as well as of cell-cell and and cell-substrate tension. The model allows for a comparison of the relative stabilities of spherical or cylindrical cellular structures (acini or tubes). Finally, we propose a unique type of buckling instability of epithelia, driven by a flattening of individual cell shapes, and discuss experimental tests to verify our predictions.
The effect of the antenna group delay on RCS measurements in the L-band (2018)

When measuring the radar cross section (RCS) at a distance in the same order as the antennas and the target sizes the range should be accurately assessed. In the L-band the use of highly directive antennas such as horn antennas is restricted by the size they would have. We propose therefore to use a pair of log-periodic arrays instead although they are less directive and supposed to exhibit a stronger mutual coupling. A differential technique based on subtracting the impulse response with and without target is also proposed. The method was successfully validated on a rectangular target.
PathGAN: Visual Scanpath Prediction with Generative Adversarial Networks (2018)

We introduce PathGAN, a deep neural network for visual scanpath prediction trained on adversarial examples. A visual scanpath is defined as the sequence of fixation points over an image defined by a human observer with its gaze. PathGAN is composed of two parts, the generator and the discriminator. Both parts extract features from images using off-the-shelf networks, and train recurrent layers to generate or discriminate scanpaths accordingly. In scanpath prediction, the stochastic nature of the data makes it very difficult to generate realistic predictions using supervised learning strategies, but we adopt adversarial training as a suitable alternative. Our experiments prove how PathGAN improves the state of the art of visual scanpath prediction on the iSUN and Salient360! datasets. Source code and models are available at https://imatge-upc.github.io/pathgan/
Advanced Doherty Architecture (2010)

For modulated signals with a high peak-to-average power ratio (PAPR), the transmitter has to be operated with its average output power backed off for an acceptable linearity at the expense of low efficiency. To achieve high efficiency and high linearity at the same time, both an efficiency enhancement technique and a linearization technique should be utilized. A powerful and reliable linearization technique, digital predistortion (DPD), is currently the most favored method for the linearization of base-station amplifiers [1]-[3]. Possible efficiency enhancement techniques are the hybrid envelope elimination and restoration/envelope tracking technique (H-EER/ET) and the Do-herty technique.
Real-time Hebbian Learning from Autoencoder Features for Control Tasks (2014)

Neural plasticity and in particular Hebbian learning play an important role in many research areas related to artficial life. By allowing artificial neural networks (ANNs) to adjust their weights in real time, Hebbian ANNs can adapt over their lifetime. However, even as researchers improve and extend Hebbian learning, a fundamental limitation of such systems is that they learn correlations between preexisting static features and network outputs. A Hebbian ANN could in principle achieve significantly more if it could accumulate new features over its lifetime from which to learn correlations. Interestingly, autoencoders, which have recently gained prominence in deep learning, are themselves in effect a kind of feature accumulator that extract meaningful features from their inputs. The insight in this paper is that if an autoencoder is connected to a Hebbian learning layer, then the resulting Realtime Autoencoder-Augmented Hebbian Network (RAAHN) can actually learn new features (with the autoencoder) while simultaneously learning control policies from those new features (with the Hebbian layer) in real time as an agent experiences its environment. In this paper, the RAAHN is shown in a simulated robot maze navigation experiment to enable a controller to learn the perfect navigation strategy significantly more often than several Hebbian-based variant approaches that lack the autoencoder. In the long run, this approach opens up the intriguing possibility of real-time deep learning for control.
Development of a robust anti-islanding algorithm for utility interconnection of distributed fuel cell powered generation (2004)

In this paper, a robust antiislanding algorithm for distributed fuel cell powered generation (DFPG) is proposed. Three different islanding scenarios are explored and presented based on analysis of real and reactive power mismatch. It is shown via analysis that islanding voltage is a function of real power alone, where as its frequency is a function of both real and reactive power. Following this analysis, a robust antiislanding algorithm is developed. The proposed algorithm continuously perturbs (/spl plusmn/5%) the reactive power supplied by DFPG while simultaneously monitoring the utility voltage and frequency. If islanding were to occur, a measurable frequency deviation takes place, upon which the real power of DFPG is further reduced to 80%, now a drop in voltage positively confirms islanding and the DFPG is safely disconnected. This method of control is shown to be robust: able to detect islanding under resonant loads, fast acting (operable in one cycle). Possible islanding conditions are simulated and verified with analysis. Experimental results on a 0.5 kW fuel cell system connected to 120 V, 60 Hz utility are discussed.
The eukaryotic promoter database in its 30th year: focus on non-vertebrate organisms (2016)

We present an update of the Eukaryotic Promoter Database EPD (http://epd.vital-it.ch), more specifically on the EPDnew division, which contains comprehensive organisms-specific transcription start site (TSS) collections automatically derived from next generation sequencing (NGS) data. Thanks to the abundant release of new high-throughput transcript mapping data (CAGE, TSS-seq, GRO-cap) the database could be extended to plant and fungal species. We further report on the expansion of the mass genome annotation (MGA) repository containing promoter-relevant chromatin profiling data and on improvements for the EPD entry viewers. Finally, we present a new data access tool, ChIP-Extract, which enables computational biologists to extract diverse types of promoter-associated data in numerical table formats that are readily imported into statistical analysis platforms such as R.
A fast packing algorithm based on single-sequence (2003)

The single-Sequence (SS) is simply a sequence of integers 1, 2, 3, ..., n. But it leads a unique set of ABLR-relations (above. below, left-of, right-of) that hold among n objects on a plane. In this paper, we propose a fast packing algorithm based on SS, For an SS, we generate direct relation set (DRS) for each room. The module packing is directly obtained from DRS in linear time. DRS can be reused for all packing under the same floorplan. This will dramatically speed up the computation. As a feature of SS, this algorithm covers all possible placements. if our objective is in bounding-box area minimization. Experimental results show that the proposed algorithm is pretty fast and efficient compared with the performances attained by conventional algorithms.
Femtosecond Laser Microfabrication of Photonic Crystals (2006)

This chapter contains sections titled: Microfabrication of Photonic Crystals by Ultrafast Lasers Nonlinear Absorption of Spatially Nonuniform Laser Fields Mechanisms of Photomodification Photonic Crystals Obtained by Direct Laser Writing Fabrication by Optical Damage in Inorganic Glasses Fabrication by Optical Damage in Organic Glasses Lithography by Two-photon Solidification in Photo-curing Resins Lithography in Organic Photoresists Structures with Woodpile Architecture Structures with Spiral Architecture Lithography by Multiple-beam Interference Generation of Periodic Light Intensity Patterns Practical Implementation of Multiple-beam Interference Lithography Lithographic Recording of Periodic Structures by Multiple-beam Interference Two-dimensional Structures Three-dimensional Structures Conclusions
Impact of the flocculation state on hindered and compression settling : experimental evidence and overview of available modelling frameworks (2015)

In order to move towards advanced 1-D models for secondary settling a more thorough understanding of compression is necessary. The inability of the current modelling frameworks to capture the variability in the compression phenomenon indicates that there is still something missing in the expression describing compressive settling. This can potentially be attributed to phenomena such as variations in the flocculation state and segregation of particles during settling which are not considered in the current modelling frameworks. In this work evidence is provided to support this hypothesis together with a brief overview of possible extensions/alternatives to the current modelling frameworks allowing for a changing flocculation state.
<title>Wavefront detection and correction for ultra-intense laser systems</title> (1997)

In order to correct wave front distortions, a technique has been developed based on adaptive optics used in a pre- compensation configuration. The system consists of a wave front sensor and an optically driven liquid crystal Spatial Light Modulator as a wave front corrector. The main advantage of the sensor is its ability to detect phase deformation of several tens of wavelengths with an accuracy around (lambda) /10. This approach appears to be a good candidate for phase shaping ultra-intense laser system exhibiting strong wave front distortions. The use of a optically addressed single large liquid crystal cell covering the entire beam aperture makes this device diffraction free. The choice of a pre-compensation geometry is discussed and preliminary results are presented.
One teflon®-like channelled nanoporous polymer with a chiral and new uninodal 4-connected net: sorption and catalytic properties (2005)

Zn(C17H8F6O4) is the first example of a fluoro-lined nanotube organo-inorganic 3D polymeric chiral structure, which possesses two different types of isolated channels, one of them being laid out with a double spiral of CF3-groups from the ligand molecule; the structure is a new uninodal 4-connected net that only exists when bent ligands connect the centres, and the compound exhibits selective sorption and catalytic chiral recognition properties.
Phase I clinical trials of ticilimumab: Tumor responses are sufficient but not necessary for prolonged survival (2006)

8036 Background: Clinical studies examining anti-CTLA4 monoclonal antibodies (mAb) provide evidence of the biologic and clinical activity of this class of agents. Two Phase 1 studies with ticilimumab, a fully human anti-CTLA4 mAb, have been reported previously. In both studies, objective responses (OR) were seen in some patients (pts) with melanoma. In addition, we observed highly favorable outcomes among several pts who did not experience objective responses. This may indicate a positive impact of ticilimumab on melanoma in these pts, not well reflected by traditional response criteria. Long-term follow-up data on survival for pts enrolled in these Phase 1 studies is now reported. Methods: We studied the safety, pharmacokinetics, immunostimulatory activity, and clinical activity of ticilimumab in 53 pts with solid malignancies. Ticilimumab was administered, as a single agent, at single dose levels ranging from 0.01 to 15 mg/kg and at multiple dose levels ranging from 3 to 15 mg/kg. The dosing regimens included either a single dose, multiple doses given q3 months, or multiple doses given q1 month. Results: The two studies included 43 pts with measurable melanoma. Ticilimumab proved safe and overall was well tolerated (Ribas et al. ProcASCO 2005, and JCO Dec2005). Of the 43 pts with measurable melanoma, 18 were alive at &gt;12 months (range: 13 - 42+) after initial treatment with ticilimumab. This includes 5 pts with an OR who continue on ticilimumab, either on-study or as part of a single IND, and 13 pts without an objective response. Among the pts who did not experience an OR, 5 had surgical resection of metastatic lesions and remain relapse free, and 8 are alive with disease. Conclusions: In pts with melanoma treated with ticilimumab, long-term survival has been achieved by all 5 pts who experienced an OR and in 13 pts who did not experience an OR. These findings suggest that lack of objective response is a poor predictor of long-term survival following ticilimumab therapy. [Table: see text]
Levels of enzymes of the direct oxidative pathway of carbohydrate metabolism in mammalian tissues and tumours (1954)

Research Article| January 01 1954 Levels of enzymes of the direct oxidative pathway of carbohydrate metabolism in mammalian tissues and tumours Gertrude E. Glock; Gertrude E. Glock 1Courtauld Institute of Biochemistry, Middlesex Hospital Medical School, London, W. 1 Search for other works by this author on: This Site PubMed Google Scholar Patricia McLean Patricia McLean 1Courtauld Institute of Biochemistry, Middlesex Hospital Medical School, London, W. 1 Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1954) 56 (1): 171–175. https://doi.org/10.1042/bj0560171 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation Gertrude E. Glock, Patricia McLean; Levels of enzymes of the direct oxidative pathway of carbohydrate metabolism in mammalian tissues and tumours. Biochem J 1 January 1954; 56 (1): 171–175. doi: https://doi.org/10.1042/bj0560171 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 ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1954 CAMBRIDGE UNIVERSITY PRESS1954 Article PDF first page preview Close Modal You do not currently have access to this content.
Solvent effects on conformational dynamics of proteins: Cytochrome c in a dried trehalose film (2002)

The spectral diffusion dynamics of free base cytochrome c (H2-Cc) in a dry trehalose film is tremendously enhanced as compared to a glycerol/water glass. We show that relaxation as well as fluctuation processes contribute to the spectral diffusion dynamics. Relaxation shows up in aging phenomena which can be measured in a separate fashion. In both solvents, the spectral diffusion as well as the aging dynamics follow power laws in time. The respective exponents are quite different, yet the influence of the solvent on them is only marginal. The large difference in the magnitude of the spectral diffusion dynamics in the two solvents can be traced back to a correspondingly large difference in the inhomogeneous width which itself seems to come from the much higher glass transition temperature in trehalose, which is close to the unfolding temperature of cytochrome c.
AAS, growth hormone, and insulin abuse: psychological and neuroendocrine effects (2008)

The nontherapeutic use of prescription medicines by individuals involved in sport is increasing. Anabolic-androgenic steroids (AAS) are the most widely abused drug. Much of our knowledge of the psychological and physiological effects of human growth hormone (hGH) and insulin has been learned from deficiency states. As a consequence of the Internet revolution, previously unobtainable and expensive designer drugs, particularly recombinant human growth hormone (rhGH) and insulin, have become freely available at ridiculously discounted prices from countries such as China and are being abused. These drugs have various physiological and psychological effects and medical personnel must become aware that such prescription medicine abuse appears to be used not only for performance and cosmetic reasons, but as a consequence of psychological pre-morbidity.
The first 10 years of Discovery (2019)

The first 10 years of Discovery Chapter 3.1: - From Design to Observations - Staatsbezoek? - A Thousand words on early Phase Control - The Last Word on Aperture Synthesis - Early data reduction and computing in the Dwingeloo lab computers Chapter 3.2: - Early WSRT receiver work in the Leiden Laboratory - The WSRT on its own First Discoveries Chapter 3.3.1: - Polarization and depolarization - To boldly go... Chapter 3.3.2: - 1974: the discovery of giant radio galaxies Chapter 3.3.3: - 1981: the expansion of a supernova remnant Chapter 3.4.1: - WSRT Contributions to the Black Hole Paradigm A Personal Perspective Chapter 3.4.2: - Identifying WSRT Radio Sources in the 1970s