gebhart/patrepeval huggingface dataset:
Audio, visual, and audio-visual egocentric distance perception by moving subjects in virtual environments (2012)

We present a study on audio , visual , and audio-visual egocentric distance perception by moving subjects in virtual environments. Audio-visual rendering is provided using tracked passive visual stereoscopy and acoustic wave field synthesis (WFS). Distances are estimated using indirect blind-walking (triangulation) under each rendering condition. Experimental results show that distances perceived in the virtual environment are systematically overestimated for rendered distances closer than the position of the audio-visual rendering system and underestimated for farther distances. Interestingly, subjects perceived each virtual object at a modality-independent distance when using the audio modality, the visual modality, or the combination of both. WFS was able to synthesise perceptually meaningful sound fields. Dynamic audio-visual cues were used by subjects when estimating the distances in the virtual world. Moving may have provided subjects with a better visual distance perception of close distances than if they were static. No correlation between the feeling of presence and the visual distance underestimation has been found. To explain the observed perceptual distance compression, it is proposed that, due to conflicting distance cues, the audio-visual rendering system physically anchors the virtual world to the real world. Virtual objects are thus attracted by the physical audio-visual rendering system.
Constitutive negative regulation in the processing of the anti-Müllerian hormone receptor II (2015)

The levels and intracellular localization of wild-type transforming growth factor β superfamily (TGFβ-SF) receptors are tightly regulated by endocytic trafficking, shedding and degradation. In contrast, a main regulatory mechanism of mutation-bearing receptors involves their intracellular retention. Anti-Müllerian hormone receptor II (AMHRII, also known as AMHR2) is the type-II receptor for anti-Müllerian hormone (AMH), a TGFβ-SF ligand that mediates Müllerian duct regression in males. Here, we studied AMHRII processing and identified novel mechanisms of its constitutive negative regulation. Immunoblot analysis revealed that a significant portion of AMHRII was missing most of its extracellular domain (ECD) and, although glycosylated, was unfolded and retained in the endoplasmic reticulum. Exogenous expression of AMHRII, but not of type-II TGF-β receptor (TβRII, also known as TGFR2), resulted in its disulfide-bond-mediated homo-oligomerization and intracellular retention, and in a decrease in its AMH-binding capacity. At the plasma membrane, AMHRII differed from TβRII, forming high levels of non-covalent homomeric complexes, which exhibited a clustered distribution and restricted lateral mobility. This study identifies novel mechanisms of negative regulation of a type-II TGFβ-SF receptor through cleavage, intracellular retention and/or promiscuous disulfide-bond mediated homo-oligomerization.
Effect of 1‐methylcyclopropene on tomato flavour components, shelf life and decay as influenced by harvest maturity and storage temperature (2011)

Harvesting tomatoes with colour (BR), thereby eliminating IG fruits, and treating with 1-MCP resulted in better quality with adequate shelf life.
End-to-End Performance of WCDMA Enhanced Uplink (2005)

In this paper we study the end-to-end performance of the enhanced uplink of WCDMA. We present results for latency and TCP performance on both uplink and downlink when using the enhanced uplink. The results show that the enhanced uplink can significantly improve the end-to-end performance of both for up- and downlink oriented traffic when compared to the uplink provided by 3GPP R5. The expected performance depends strongly on the configuration of the enhanced uplink, especially on the HARQ operating point.
Effect of foam‐mat drying on kinetics and physical properties of Japanese threadfin bream ( Nemipterus japonicus ) powder (2022)

Japanese threadfin bream (Nemipterus japonicus) minced meat foams added with methyl cellulose (MC) at a concentration of 0.5%, 1.0%, and 1.5% w/w with foam thickness of 0.5 mm were subjected to foam-mat drying (FMD) at two drying temperatures (70 and 80°C). The objective of this study was to investigate the drying kinetics of the minced fish meat foams at different drying temperatures and MC concentrations. The effect of FMD conditions on the physical properties of powdered samples was also investigated. The drying data were fitted to a selected thin-layer drying models based on moisture ratio. The Page model was found to be the best model (R2 = 0.9930, χ2 = 0.0005 and RMSE = 0.0202) to describe the drying curves of threadfin bream foams. The L*, a*, b*, and whiteness values of FMD fish powder were significantly affected by all the factors including the interaction (p < .05). An increase in particle size from 116.22 to 131.80 μm was observed as the drying temperature and MC concentration increased. The powder showed good—fair flowability and are within the acceptable range. Both drying temperatures yielded fish powder with satisfactory physical characteristics. Practical applications Drying is a method of food preservation that removes the water from the food. Using foam-mat drying, the minced fish meat is converted into fish powder at a lower drying temperature and shorter drying time. Mathematical modeling of the drying process of threadfin bream foams helps to predict the behavior of moisture removal from the foams and the process design, increasing the use of Japanese threadfin bream in the food industry. The fish powder obtained by this method has greater bulk density, which reduces packaging and transportation costs. The fish powder can be incorporated into other products to add value.
Oxygen Electroreduction Catalysts Based on Polymer Complexes of Nickel with Schiff Bases (2018)

In energy-storage systems such as fuel cells and metal-air batteries, the main current-forming process is the reaction of oxygen electroreduction (OER). A simple method is proposed for synthesizing OER catalysts based on polymer complexes of transition metals (nickel, palladium) with Schiff bases prepared by electrochemical polymerization of starting monomers. The OER catalysts are prepared by thermolysis of polymers in inert atmosphere. Their properties are characterized by the methods of cyclic voltammetry with the use of a rotating disk electrode. The surface state (the catalyst film density, the size and composition of particles) is controlled by scanning electron microscopy with X-ray microanalysis. The electrode demonstrates the high catalytic activity in the oxygen electroreduction reaction in alkaline solutions (higher than 750 mA/mg of the initial polymer mass).
14. Biomasse : filière chimique bio-inspirée (2013)

Face aux problèmes posés par l’utilisation des combustibles fossiles, les technologies alternatives pour l’énergie sont en plein développement. Dans ce contexte, la mise au point de procédés permettant de produire et d’utiliser le dihydrogène (H2) selon des voies économiquement et écologiquement viables est un enjeu majeur. La Nature a déjà répondu à ce challenge en élaborant des enzymes* appelées hydrogénases dont l’activité catalytique (cf. II.10) est exceptionnelle. De plus, et contraireme...
Selective reduction of anti‐Helicobacter pylori IgG subclass antibody in gastric carcinoma (2005)

These studies indicate that subjects with low levels of IgG2 anti-H. pylori antibody are at risk of gastric adenocarcinoma, and that the previously described linkage between gastric adenocarcinoma and low total IgG antibody does not simply reflect reduced gastric colonization. The diagnostic value of this assay for pre-endoscopy screening is attractive.
Supervised Learning of Anatomical Structures Using Demographic and Anthropometric Information. (2013)

A supervised learning approach to predict anatomical structures derived from computed tomography (CT) images using demographic and anthropometric information is proposed. The approach applies a dimensionality reduction technique to a training dataset to learn a low-dimensional manifold representing variation of organ geometry or variation of the CT intensities itself, which computes a mapping between a low-dimensional feature vector and the organ geometry or CT volume. Regression analysis is then applied to determine a regression function between the low-dimensional feature coordinates and external measurements of the subjects such as demographic or anthropometric data. Then for an unseen subject, the low-dimensional feature coordinates are predicted from external measurements using the computed regression function. Subsequently, the organ geometry or the CT volume is estimated from the mapping computed in the dimensionality reduction. As an example case, lung shapes and thoracic CT scans were analyzed based on available demographic parameters (age, gender, race) and anthropometric measurements (height, weight, and chest dimensions). The training dataset consisted of lung shapes represented as a topologically consistent point distribution model (PDM) and CT volumes (\(256^{3}\,\mathrm{voxels}, 1.5^{3}\,\mathrm{mm}/\mathrm{voxel}\)) of 124 subjects. The prediction error of lung shape of an unknown subject based on 11 independent demographic and anthropometric variables was \(10.71 \pm 5.48\,\mathrm{mm}\). Isomap analysis of CT volumes revealed that 95 % of the total variance was explained with 4 dimensions, and the computed mapping clearly captured trends in anatomical variation. This suggested a potential for a direct CT-volume based statistical analysis using dimensionality reduction, which we call a voxel-based statistical atlas. Potential application areas of the proposed approach includes subject-specific ergonomic design in personal protective equipment or population-specific finite-element modeling in biomechanical analysis. Examples also include the use of a predicted patient-specific CT volume as it a prior information for image quality improvement in low dose CT, and optimization of CT scanning protocols.
New concept of specification for mask flatness (2002)

The shrinkage of semiconductor devices creates demand for micronization in the photolithographic process. As a result, problems are arising in photolithography in the semiconductor manufacturing process. Focus latitude in photolithography becomes smaller as micronization advances and therefore the flatness of the mask can no longer be ignored. In this work, we clarified what the specification of mask flatness should be from the standpoint of its warpage in vacuum chucking of an exposure tool. A two-dimensional approach was applied for the prediction of mask surface after chucking. The approach is simple analytical calculation distinguishing between x-direction and y-direction. Warpage of mask surface after chucking has two modes depending on the directions. One is leverage caused by interaction of mask surface and chucking stage. Another one is warpage along chucking stage surface. The prediction shows good agreement with the actual surface of chucked mask. From this study, a new concept of the specification for mask blank flatness was proposed, taking warpage in vacuum chuck into consideration in the prediction. The proposed specification certainly can exclude masks that show large deformation after chucking even though with good free-standing flatness.
ChemInform Abstract: Generation and Study of Benzylchlorocarbene from a Phenanthrene Precursor. (1998)

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.
Purification of the proprotein convertase furin by affinity chromatography based on PC-specific inhibitors (2011)

In eucaryotes, many secreted proteins and peptides are proteolytically excised from larger precursor proteins by a specific class of serine proteases, the proprotein/prohormone convertases (PCs). This cleavage is essential for substrate activation, making the PCs very interesting pharmacological targets in cancer and infectious disease research. Correspondingly, their structure, function and inhibition are intensely studied - studies that require the respective target proteins in large amounts and at high purity. Here we describe the development of a novel purification protocol of furin, the best-studied member of the PC family. We combined the heterologous expression of furin from CHO cells with a novel purification scheme employing an affinity step that efficiently extracts only active furin from the conditioned medium by using furin-specific inhibitor moieties as bait. Several potential affinity tags were synthesized and their binding to furin characterized. The best compound, Biotin-(Adoa)(2)-Arg-Pro-Arg-4-Amba coupled to streptavidin-Sepharose beads, was used in a three-step chromatographic protocol and routinely resulted in a high yield of a homogeneous furin preparation with a specific activity of ~60 units/mg protein. This purification and the general strategy can easily be adapted to the efficient purification of other PC family members.
NLSR (2013)

This paper presents the design of the Named-data Link State Routing protocol (NLSR), a routing protocol for Named Data Networking (NDN). Since NDN uses names to identify and retrieve data, NLSR propagates reachability to name prefixes instead of IP prefixes. Moreover, NLSR differs from IP-based link-state routing protocols in two fundamental ways. First, NLSR uses Interest/Data packets to disseminate routing updates, directly benefiting from NDN's data authenticity. Second, NLSR produces a list of ranked forwarding options for each name prefix to facilitate NDN's adaptive forwarding strategies. In this paper we discuss NLSR's main design choices on (1) a hierarchical naming scheme for routers, keys, and routing updates, (2) a hierarchical trust model for routing within a single administrative domain, (3) a hop-by-hop synchronization protocol to replace the traditional network-wide flooding for routing update dissemination, and (4) a simple way to rank multiple forwarding options. Compared with IP-based link state routing, NLSR offers more efficient update dissemination, built-in update authentication, and native support of multipath forwarding.
Structure and motion of curved 3D objects from monocular silhouettes (1996)

The silhouette of a smooth 3D object observed by a moving camera changes over time. Past work has shown how surface geometry can be recovered using the deformation of the silhouette when the camera motion is known. This paper addresses the problem of estimating both the full Euclidean surface structure and the camera motion from a dense set of silhouettes captured under orthographic or scaled orthographic projection. The approach relies on a viewpoint-invariant representation of curves swept by viewpoint-dependent features such as bitangents, inflections and contour points with parallel tangents. Feature points, which form stereo frontier points between non-consecutive images, are matched using this representation. The camera's angular velocity is computed from constraints derived from this correspondence along with the image velocity of these features. From the angular velocity, the epipolar geometry is ascertained, and infinitesimal motion frontier points can be detected. In turn, the motion of these frontier points constrains the translation component of camera motion. Finally, the surface is reconstructed using established techniques once the camera motion has been estimated.
The design of experiments (2000)

‘The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment.’Richard P. Feynman
Intra-aortic balloon pump placement following aorto-iliac angioplasty and stent placement (2002)

Approximately 20% of patients are unable to receive an intra-aortic balloon pump (IABP) due to aorto-iliac atherosclerotic disease. Aorto-iliac stenoses can be managed with angioplasty or stent placement; however, there are limited data about this strategy to facilitate IABP placement. Thirty-seven IABPs were placed in 35 patients. A total of 45 revascularization procedures were performed. With revascularization, the minimal lumen diameter increased from 2.78 ± 1.46 to 6.75 ± 2.36 mm (P < 0.0001). Limb ischemia occurred following 2/37 (5%) IABP insertions. Limb ischemia was managed with IABP removal and angioplasty. The mortality rate was 32%. Mortality was more common with chronic renal insufficiency (8/11, 73%; P = 0.0014), dialysis-dependent renal failure (3/3, 100%; P = 0.028), and presentation with acute myocardial infarction (8/15 patients, 53%; P = 0.036). Although no patients required vascular surgery for limb ischemia, one patient required surgery for bleeding. Angioplasty or stenting to facilitate IABP placement in patients with peripheral vascular disease is safe and effective. Cathet Cardiovasc Intervent 2002;55:163–168. © 2002 Wiley-Liss, Inc.
Development of a Total Telescoped Synthesis of a Renin Inhibitor Containing 3,4,5-Substituted Piperidine with Sterically Hindered Amide Bonds (2014)

A telescoped synthesis for the manufacturing of a renin inhibitor containing 3,4,5-substituted piperidine with sterically hindered amide bonds via a five-step synthetic route is described. Highlights of this scalable synthesis include: (1) the byproduct-controlled amidation protocol using Ghosez’s reagent in the presence of a mild acid scavenger for the formation of the first sterically hindered amide bond; (2) the chemoselective hydrolysis of a sterically hindered ester; (3) an efficient amidation reaction employing a soluble carbodiimide leading to the second sterically hindered amide bond; (4) filtration of the fumarate salt of the final drug substance, being the only necessary isolation step throughout the total synthesis. Without the necessity of isolating any intermediates, this telescoped process conserved equipment usage, consumed less solvents, and minimized process waste generation, energy consumption, personnel exposure, and environmental impact. It furnished kilogram quantities of high-quality active pharmaceutical ingredients.
Valence and conduction bands engineering in halide perovskites for solar cell applica- tions (2014)

We performed ab initio simulations aimed at identifying the atomistic and electronic structure origin of the high valence and conduction band, and band gap tunability of halide perovskites. We found that the two key ingredients are the overlap between bivalent cation and halide atomic orbitals, and the electronic charge of the bottom of the conduction band (CBM) state on the Sn or Pb atoms. In particular, we found that lower gaps are associated to higher negative antibonding overlap, and higher CBM charge on the bivalent cation. Both overlap and CBM charge on Sn/Pb can be tuned by the chemical nature of halide, bi and monovalent cation, as well as the symmetry of crystal structure. On the basis of our results we provide some practical rules to tune the valence band maximum, conduction band minimum, and band gap in this class of materials.
Fractal phononic crystals in aluminum nitride: An approach to ultra high frequency bandgaps (2011)

This letter reports on the design and experimental demonstration of a microscale fractal-like phononic bandgap (PBG) structure in aluminum nitride (AlN). The micro-fabricated fractal phononic crystals (PnCs) exhibit two frequency stop bands for symmetric lamb waves in the Γ-Χ direction centered about 900 MHz (bandwidth of 11.1%) and 1.10 GHz (bandwidth of 9.1%) with maximum acoustic rejection of 40 dB. Differently from the conventional phononic bandgap designs, the unit cell consists of a center air square scatterer with four side air square scatterers repeating at its corners. The presence of these side squares essentially shortens the scattering distance between the unit cells and translates into the suppression of higher frequency vibrational modes. In other words, this design is capable of extending the frequency of operation of the PBGs for a given unit cell and minimum feature size. For the purpose of the demonstration, AlN lamb wave transducers were utilized to launch symmetric lamb waves into the PBG structure. The evidence of direct in-plane integration between the transducers and the PnC structure operating in the ultra high frequency range lays the foundation for the development of ultrasonic devices based on PBGs.
The Design of Co-Current Moving-Bed Gasifiers Fueled by Biomass (1980)

Co-current moving bed gasifiers have been selected for the gasification of biomass during one century and even now this reactor-type seems to be attractive for this purpose in comparison to other possible types like counter-current, fluid bed and entrained bed [1]. The main advantages are that a) the reactor is simple to construct, b) a tar free gas is produced and c) if required, chlorine and sulphur components can be removed during gasification by means of e.g. dolomite addition. A disadvantage is the high outlet temperature (900 K). For the classical design the use of feedstocks with a small particle size or a high ash content and scaling up of the reactor to capacities larger than 250 kg/h seem to be difficult if a tar free product gas is required. The reactor know-how is largely empirical and dates mainly from 1925 - 1945 when the gasification of dried woodblocks (0.04
Preparation and Insecticidal Activity of Optically Active 3-Phenoxybenzyl 3,3,3-T rifluoro-2-phenylpropyl Ethers (1988)

Synthese des enantiomeres+ des composes du titre par reduction chimique d'acide ethoxy-4' phenyl-2 trifluoro-3,3,3 propionique suivie de reaction avec des α-bromotoluenes
From Mao to Market: Rent Seeking, Local Protectionism, and Marketization in China. By H. Wedeman Andrew. Cambridge: Cambridge University Press, 2003. 292 pp. $60.00 (cloth). (2004)

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Supplementary Figure 2 from Depletion of Peripheral Macrophages and Brain Microglia Increases Brain Tumor Titers of Oncolytic Viruses (2023)

Supplementary Figure 2 from Depletion of Peripheral Macrophages and Brain Microglia Increases Brain Tumor Titers of Oncolytic Viruses
Mechanical Properties of Low-k Materials on the Nanometer Scale (2006)

The paper demonstrates an application of the Force Modulation (FM) measurements to the studies of the mechanical properties of low‐k materials. The quantification of the measured results is demonstrated by comparing the FM measurements to those performed by nanoindentation. It is shown, that in laterally confined structures the susceptibility of the low‐k materials to electron beam damaging varies with the pitch size of the structure. This variation is either due to the pre‐existing damage in the small structures or due to some other reasons.