gebhart/patrepeval huggingface dataset:
Case Studies for Improving Completion Design Through Comprehensive Well-Performance Modeling (2006)

Abstract Optimal completion design has been practiced over the past years through detailed well performance evaluation, and improved completion selection workflow. Six field case studies will be discussed in this paper to demonstrate the methodology to achieve the best completion design under different field and operating conditions. The focus of the field case studies covers well production prediction, well performance evaluation, optimum well length assessment, cost effective and production efficient completion strategy, skin estimate from well production history, water/gas control, impact of casing integrity, and sensitivity assessment on reservoir permeability, mechanical skin, non-Darcy skin, flowing bottomhole pressure (BHP), original oil saturation, and so on. The wells to be discussed include single, dual lateral horizontal wells, and highly deviated wells. The produced fluids include oil and/or gas and water. The most popular completion options, such as open hole, slotted liner, inflow control devices (ICD), intelligent well completions (DIACS), perforated cemented liner, wire wrapped screen or standalone screen, gravel pack, and frac pack, expandable sand screen, alternating standalone screen and blank pipe, etc, have been either applied and/or evaluated in the case studies.
Impact of duration and missing data on the long-term photovoltaic degradation rate estimation (2021)

Accurate quantification of photovoltaic (PV) system degradation rate (RD) is essential for lifetime yield predictions. Although RD is a critical parameter, its estimation lacks a standardized methodology that can be applied on outdoor field data. The purpose of this paper is to investigate the impact of time period duration and missing data on RD by analyzing the performance of different techniques applied to synthetic PV system data at different linear RD patterns and known noise conditions. The analysis includes the application of different techniques to a 10-year synthetic dataset of a crystalline Silicon PV system, with emulated degradation levels and imputed missing data. The analysis demonstrated that the accuracy of ordinary least squares (OLS), year-on-year (YOY), autoregressive integrated moving average (ARIMA) and robust principal component analysis (RPCA) techniques is affected by the evaluation duration with all techniques converging to lower RD deviations over the 10-year evaluation, apart from RPCA at high degradation levels. Moreover, the estimated RD is strongly affected by the amount of missing data. Filtering out the corrupted data yielded more accurate RD results for all techniques. It is proven that the application of a change-point detection stage is necessary and guidelines for accurate RD estimation are provided.
Experimental identification of a priori tensor-valued random field for the elasticity properties of cortical bones using in vivo ultrasonic measurements (2012)

International audience
'Shim pulses' for NMR spectroscopy in inhomogeneous magneticfields (2004)

NMR spectroscopy conveys information about chemical structure through ppm-scale shifts of the resonance frequency depending on the chemical environment.In order to observe these small shifts, magnets with highly homogeneous magnetic field B 0 are used.The high cost and large size of these magnets are a consequence of the requirement for high homogeneity.In this contribution we introduce a new method for recording high-resolution NMR spectra from samples in inhomogeneous B 0 , opening up the possibility of exploiting magnets of lower homogeneity and cost.Instead of using the traditional B 0 "shim coils", adiabatic radiofrequency (RF) pulse sequences and modulated B 0 gradients generated by coils in the probe are used to produce "shim pulses".A great deal of work has been devoted to finding methods for retrieving chemical shift information even when B 0 is inhomogeneous.One class of methods relies on zero-or multiple quantum coherences which evolve independently of B 0 . 1 -5 These methods are inherently two-dimensional and the high-resolution information is obtained indirectly.In order to minimize experimental time it is desirable to acquire a highresolution spectrum directly just as for traditional NMR in homogeneous fields.A further advantage with direct acquisition is that modification of already existing multidimensional NMR techniques is facilitated.A fundamentally different approach utilizes inhomogeneity of the RF magnetic field to periodically refocus the phase dispersion from the inhomogeneous B 0 . 6 -9 With this technique a high-resolution spectrum can indeed be acquired in a single shot.The main drawback is the requirement for spatial matching between the RF and B 0 inhomogeneities.Based on this latter technique we propose the use of "shim pulses", i.e. modulated, spatially constant, B 0 gradient pulses together with spatially homogeneous adiabatic frequency sweeps to induce non-linear phase shifts in three dimensions.An intuitive understanding of the approach can be obtained from the following: An adiabatic full passage applied to transverse magnetization effectively rotates the magnetization in the transverse plane with an amount that depends on the frequency offset.In homogeneous B 0 this gives rise to a "phase roll" across the NMR spectrum. 1 0If the adiabatic full passage is
Editorial: Protein Aggregation and Solubility in Microorganisms (Archaea, Bacteria and Unicellular Eukaryotes): Implications and Applications (2020)

EDITORIAL article Front. Microbiol., 30 November 2020 | https://doi.org/10.3389/fmicb.2020.620239
Regeneration of spermatogenesis by mouse germ cell transplantation into allogeneic and xenogeneic testis primordia or organoids (2022)

Gametogenesis requires close interactions between germ cells and somatic cells. Derivation of sperm from spermatogonial stem cells (SSCs) is hampered by the inefficiency of spermatogonial transplantation technique in many animal species because it requires a large number of SSCs and depletion of endogenous spermatogenesis. Here we used mouse testis primordia and organoids to induce spermatogenesis from SSCs. We microinjected mouse SSCs into embryonic gonads or reaggregated neonatal testis organoids, which were transplanted under the tunica albuginea of mature testes. As few as 1 × 10<sup>4</sup> donor cells colonized both types of transplants and produced sperm. Moreover, rat embryonic gonads supported xenogeneic spermatogenesis from mouse SSCs when transplanted in testes of immunodeficient mice. Offspring with normal genomic imprinting patterns were born after microinsemination. These results demonstrate remarkable flexibility of the germ cell-somatic cell interaction and raise new strategies of SSC manipulation for animal transgenesis and analysis of male infertility.
Tetrapyrroles as Endogenous TSPO Ligands in Eukaryotes and Prokaryotes: Comparisons with Synthetic Ligands (2016)

The 18 kDa translocator protein (TSPO) is highly 0conserved in eukaryotes and prokaryotes. Since its discovery in 1977, numerous studies established the TSPO's importance for life essential functions. For these studies, synthetic TSPO ligands typically are applied. Tetrapyrroles present endogenous ligands for the TSPO. Tetrapyrroles are also evolutionarily conserved and regulate multiple functions. TSPO and tetrapyrroles regulate each other. In animals TSPO-tetrapyrrole interactions range from effects on embryonic development to metabolism, programmed cell death, response to stress, injury and disease, and even to life span extension. In animals TSPOs are primarily located in mitochondria. In plants TSPOs are also present in plastids, the nuclear fraction, the endoplasmic reticulum, and Golgi stacks. This may contribute to translocation of tetrapyrrole intermediates across organelles' membranes. As in animals, plant TSPO binds heme and protoporphyrin IX. TSPO-tetrapyrrole interactions in plants appear to relate to development as well as stress conditions, including salt tolerance, abscisic acid-induced stress, reactive oxygen species homeostasis, and finally cell death regulation. In bacteria, TSPO is important for switching from aerobic to anaerobic metabolism, including the regulation of photosynthesis. As in mitochondria, in bacteria TSPO is located in the outer membrane. TSPO-tetrapyrrole interactions may be part of the establishment of the bacterial-eukaryote relationships, i.e., mitochondrial-eukaryote and plastid-plant endosymbiotic relationships.
Quality Estimation for Image Captions Based on Large-scale Human Evaluations (2021)

Tomer Levinboim, Ashish V. Thapliyal, Piyush Sharma, Radu Soricut. Proceedings of the 2021 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies. 2021.
ChemInform Abstract: PROTONATION OF ORGANOMETALLIC HYDRIDES WITH FLUOROCHEMICAL ACIDS (1984)

Abstract Bis‐[perfluoralkyl]‐sulfonylalkane und amine (I)‐(III), sogenannte fluorchemische Säuren, sind brauchbare Reagentien für die Synthese von kationischen Organometallverbindungen.
Tip Vortex Measurements on a Cycloidal Rotor Blade at Ultralow Reynolds Numbers - Lichten Award Runner-Up Paper (2018)

This study provides the first in-depth analysis of the formation, strength, and convection of cycloidal rotor tip vortices. The blade force and PIV-based tip-vortex measurements were conducted for different blade aspect ratios and pitch kinematics in water at a chord Reynolds number of 18,000. Two phase-locked PIV configurations were utilized to investigate the flow field induced by the cyclorotor blade: (1) a laboratory-fixed field of view to enable investigation of vortex development at increasing vortex ages, and (2) a blade-fixed field of view to investigate the early development of the wingtip vortex at fixed 2° vortex age for varying azimuthal locations. The instantaneous blade force measurements on the cycloidal rotor showed a decrease in lift coefficient with decreasing blade aspect ratio. This is due to the higher peak swirl velocity of the tip vortex produced by the low AR blade, thereby resulting in higher induced downwash along the blade span. The aspect ratio of the blade did not affect the shape of the vortex convection trajectory, however, the rate of downward convection increased with increasing aspect ratio due to the higher thrust produced. The tip vortices showed self-similarity in both the velocity and the circulation profiles. The measurements indicate that the core-radius of the vortex experiences a logarithmic growth and the swirl velocity experiences a logarithmic decay, with vortex age due to viscous diffusion. When compared to previous helicopter rotor studies, the observed vortex dynamics from the present study exhibit increased viscous diffusion, likely due to the significantly lower Reynolds number. The tip vortex strength varied cyclically with blade azimuthal location due to the cyclic variation of blade pitch angle and the dynamic virtual camber effects. The periodic variation in tip vortex strength leads to a periodic variation in the induced flow velocity on the blade.
[Research Progress in Mechanisms Associated with Latent Infection in Humans by the Cytomegalovirus]. (2016)

The human cytomegalovirus (HCMV) is a widespread herpesvirus. Virus reactivation from latency can lead to stillbirth, miscarriage, fetal anomalies, and intrauterine growth retardation. During latent infection with the HCMV, the virus can be cleared by the immune response or apoptosis of host cells. However, the HCMV has developed several strategies to manipulate expression of its genes and the microenvironment of host cells. Recent studies have shown that latent infection with the HCMV is associated with viral: regulation of early expression of genes; evasion of cell death; evasion of the immune response; regulatin of non-coding RNAs. This review summarizes recent research progress on the mechanisms underpinning latent infection with the HCMV.
CBA: Contextual Quality Adaptation for Adaptive Bitrate Video Streaming (2019)

Recent advances in quality adaptation algorithms leave adaptive bitrate (ABR) streaming architectures at a cross-roads: When determining the sustainable video quality one may either rely on the information gathered at the client vantage point or on server and network assistance. The fundamental problem here is to determine how valuable either information is for the adaptation decision. This problem becomes particularly hard in future Internet settings such as Named Data Networking (NDN) where the notion of a network connection does not exist. In this paper, we provide a fresh view on ABR quality adaptation for QoE maximization, which we formalize as a decision problem under uncertainty, and for which we contribute a sparse Bayesian contextual bandit algorithm denoted CBA. This allows taking high-dimensional streaming context information, including client-measured variables and network assistance, to find online the most valuable information for the quality adaptation. Since sparse Bayesian estimation is computationally expensive, we develop a fast new inference scheme to support online video adaptation. We perform an extensive evaluation of our adaptation algorithm in the particularly challenging setting of NDN, where we use an emulation testbed to demonstrate the efficacy of CBA compared to state-of-the-art algorithms.
A seed-mediated and double shell strategy to realize large-size ZnSe/ZnS/ZnS quantum dots for high color purity blue light-emitting diodes (2021)

Environment-friendly high color purity blue zinc selenide (ZnSe) quantum dot-based light-emitting diodes (QLEDs) are promising candidates in next-generation display applications. However, due to the large bandgap of ZnSe (2.7 eV), the reported electroluminescence (EL) wavelengths of ZnSe QLEDs are mainly located within the range from purple to violet blue, and preparing blue emitting (>445 nm) ZnSe QLEDs remains challenging. Herein, we report a seed-mediated and double shell strategy to synthesize large-sized blue ZnSe/ZnS/ZnS core/shell/shell quantum dots (QDs). The as-prepared QDs possess excellent features including narrow full widths at half-maximum (11-19 nm), tunable emission wavelengths (410-451 nm), and high photoluminescence quantum yields (≥50%). Using ZnSe/ZnS/ZnS QDs as emitters in an inverted device, a color saturated blue QLED with an EL wavelength of 446 nm, a maximum luminance of 106 cd m<sup>-2</sup>, a current efficiency of 0.94 cd A<sup>-1</sup>, and an EQE of 2.62% is successfully fabricated. These results indicate that blue ZnSe QLEDs have great potential for future display technologies.
New n = 2 members of the Li2Srn − 1MnO3n + 1 family, closely related to the Ruddlesden–Popper phases: structure and non-stoichiometry (1999)

New n = 2 members of the Li2Srn – 1MnO3n + 1 series closely related to the RP phases have been synthesized by solid state reaction for the first time: Li2SrNb2O7, Li2SrTa2O7, Li2EuTa2O7. The detailed structure determination of Li2SrNb2O7 performed by neutron diffraction and electron microscopy shows that it crystallizes in the space group Cmcm [a = 18.0071(5), b = 5.5979(3), c = 5.5920(3) Å], i.e. with a symmetry different from that of LiAM2O7 and Li2AM2O7 previously synthesized by chemical or electrochemical intercalation. The double perovskite layers [SrNb2O6] are puckered due to a tilting of their [001] octahedral rows alternately in opposite directions while the tetrahedral [Li2O] layers are significantly distorted. The possibility of cationic non-stoichiometry in both Li and Sr sites is demonstrated by the synthesis of Li2Sr1 – xLn2x/3Nb2O7 (Ln = La, Nd) and Li2 – xSr1 – xLaxNb2O7 oxides. The stability of these phases is discussed in terms of matching of the octahedral and tetrahedral layers, taking into consideration the tilting of the octahedra, itself influenced by the size of the A site cations and the cationic non-stoichiometry. An extension to n = 3 members is made, with the synthesis of the oxides Li2Sr1.5Nb3O10 and Li2Ca1.5Nb3O10.
Extrachromosomal Probes for Mutagenesis by Carcinogens: Studies on the Mutagenic Activity of O 6 -Methylguanine Built into a Unique Site in a Viral Genome (1985)

John M. Essigmann, Kerry W. Fowler, Calvert L. Green, Edward L. Loechler, Extrachromosomal Probes for Mutagenesis by Carcinogens: Studies on the Mutagenic Activity of O6-Methylguanine Built into a Unique Site in a Viral Genome, Environmental Health Perspectives, Vol. 62 (Oct., 1985), pp. 171-176
Evidence of demyelination in mild cognitive impairment and dementia using a direct and specific magnetic resonance imaging measure of myelin content (2018)

We believe this to be the first demonstration of myelin loss in MCI, Alzheimer's disease, and vascular dementia using a method that provides a quantitative magnetic resonance imaging-based measure of myelin. Our findings add to the emerging evidence that myelination may represent an important biomarker for the pathology of MCI and dementia. This study supports the investigation of the role of myelination in MCI and dementia through use of this quantitative magnetic resonance imaging approach in clinical studies of disease progression, and relationship of functional status to myelination status. Furthermore, mapping MWF may permit myelin to serve as a therapeutic target in clinical trials.
Concise Synthesis of (3Z)-Dodecen-12-olide, Pheromone Component of the Emerald Ash Borer (2014)

Abstract Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an invasive insect that has killed millions of ash trees in Canada and the USA. (3Z)-Dodecen-12-olide is a known female-produced pheromone of this insect, and a concise, three-step synthesis of a 2:1 blend of (3Z)-dodecen-12-olide and (3E)-dodecen-12-olide starting from commercially available (2-carboxyethyl)triphenylphosphonium bromide and 10-bromo-1-decene is described. The key steps in this synthesis are a lithium-salt-free Wittig reaction and an intramolecular SN2 esterification. Both of these macrocyclic lactones are behaviorally active toward EAB, and the 2:1 blend whose synthesis is described here has the potential to be a detection agent, mating disruptor, or mass trapping agent, which could be used in the control of EAB.
Bits, bytes et bugs: next generation; tendances dans le secteur informatique en Belgique (2008)

status: Published
Automotive Embedded Systems-Model Based Approach Review (2022)

The evolution of transforming from an electrical mechanical engineering discipline to a combination of software and electrical/mechanical engineering establishes software as a crucial technology. The current complex automotive system is the product of growth of embedded software. As a result, automotive industry focuses on a new trend Model based development rather than traditional method where software is handwritten in Assembly code or C language. This paper presents a review of the use of Model based Development to accelerate development process of embedded control systems and technologies. The paper also presents a review of the tools used to support Model-Based Development (MBD) from functional requirements to automated testing and Model based testing process.
New caledonian ARAUCARIACEAE / Araucaria laubenfelsii (2006)

International audience
WiMAX femtocells: a perspective on network architecture, capacity, and coverage (2008)

Femtocells are viewed as a promising option for mobile operators to improve coverage and provide high-data-rate services in a cost-effective manner. The idea is to overlay low-power and low-cost base station devices, Femto-APs, on the existing cellular network, where each Femto-AP provides high-speed wireless connection to subscribers within a small range. In particular, Femto-APs can be used to serve indoor users, resulting in a powerful solution for ubiquitous indoor and outdoor coverage, using a single access technology such as WiMAX. In this article we consider a WiMAX network deploying both macro BSs and Femto-APs, where it is assumed that Femto-APs have wired backhaul such as cable or DSL and operate on the same frequency band as macro BSs. Simulation results show that significant areal capacity (throughput per unit area) gain can be achieved via intense spatial reuse of the wireless spectrum. In addition, Femto-APs improve indoor coverage, where the macro BS signal may be weak. Motivated by the gains in capacity and coverage offered by femtocells, we review the state of the art of this "infant" technology, including use cases and network deployment scenarios, technical challenges that need to be addressed, and current standardization and industry activity.
Transforming scientific discovery into medical application at the IMB (2008)

The Institute for Medical Biology (IMB), located in Singapore’s sprawling Biopolis, is one of a handful of research organizations generated in a global mission to understand and treat human disease. Kristin Kain investigates.
Isolation and identification of the conidial germination factor of Neurospora crassa (1976)

The germination-essential substance (germination factor [GF]) that is lost from conidia of Neurospora crassa on exposure to solutions of low water activity has been isolated and identified as a group of iron-transport compounds, or siderochromes. The principal siderochrome of conidia is ferricrocin, a cyclic hexapeptide. A closely related substance, ferrichrome C, is tentatively identified as a minor constituent. The same substances are also present in extracts of mycelium along with small amounts of a third siderochrome, which has not been identified. The GF activity of culture filtrates is due to coprogen, the only siderochrome previously identified with N. crassa.
ISARA – Integrated Solar Array and Reflectarray Mission Overview (2013)

The ISARA mission is a technology demonstration of a practical, low cost Ka-band High Gain Antenna (HGA) on a 3U CubeSat that will enable 100 Mbps downlink data with minimal impact on spacecraft mass, volume, cost and power requirements. The key to this technical advance is the integration of a reflectarray HGA into a Pumpkin PMDSAS Turkey Tail solar array. ISARA will fly a nominal 5 month mission that demonstrates the technology on orbit. This paper presents an overview of the ISARA CubeSat mission with emphasis on the unique antenna / solar panel design and a description of the mission design that will verify the antenna performance and validate the data rate capability.
Development of brushless and sensorless vibration motor used for mobile phone (2002)

With the wide use of mobile phones, a paging signal by a sound transducer acts as an environmental noise on many occasions, thus necessitating an alternative paging signal by a vibration motor. Conventional vibration motors employ three-phase windings with mechanical brushes for commutation, which is disadvantageous to manufacturing cost and productivity. In this paper, a new one-phase brushless and sensorless vibration motor is introduced utilizing digital signal processor chips in mobile phones. For electromagnetic field analysis, two-dimensional modeling can be implemented to determine the back electromotive force using axisymmetric boundary conditions. Geometric design parameters, such as coil pitch and magnet pitch. are considered for performance optimization. Through the experiments, it is shown that the proposed design has the equivalent performance with reduced number of parts, thus enhancing manufacturing productivity and reducing manufacturing cost.