bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of gas pressurization on the interpretation of NMR hydrocarbon measurements in organic rich shales
Authors: Dang Son , Sondergeld Carl , Rai Chandra 
Published: February 2020

The estimation of total hydrocarbons (HCs) in place is one of the most important economic challenges in unconventional resource plays. Nuclear magnetic resonance (NMR) has proven to be a valuable tool in directly quantifying both hydrocarbons and brines in the laboratory and the field. Some major applications of NMR interpretation include pore body size distributions, wettability, fluid types, and fluid properties. However, for tight formations, the effects of the factors on NMR relaxation data are intertwined. One purpose of this study is to review the interpretation of NMR response of HCs in a tight rock matrix through illustrated examples.
When comparing NMR data between downhole wireline and laboratory measurement, three important elements need to be considered: 1) temperature differences, 2) system response differences, and 3) pressure (mainly due to the lost gasses.) The effect of temperature on HCs would be presented with experimental results for bulk fluids. Whereas, the effect of pressure is investigated by injecting gas back into rock matrix saturated with original fluids. The experiments were performed within an NMR transparent Daedalus ZrO2 pressure cell, which operates at pressures up to 10,000 psi.
The results show that, at ambient temperature and pressure, NMR responds to a fraction of HCs, which is volatile enough to be observed as an NMR relaxation sequence. The invisible fraction of HCs to NMR sequence at ambient condition can be up to 20% of the total extractable HCs. Molecular relaxation is impacted by fluid viscosity, pore size, and surface affinity. In other words, the fluid with higher viscosity (either due to temperature or gas loss), presenting in smaller pore, or highly affected by the pore surface, will relax faster, and would be partially invisible to NMR, especially in the field. This is critical to the interpretation of NMR response for liquid rich source rocks, in which all of the above molecular relaxing restrictions can be found. Thus, engineers can underestimate movable HCs by using routine core analysis data.
Hitzestress im Krankenhaus
Authors: Lenzer Benedikt , Drozdek Marija , Sosa Alvaro Valera , Matthys Stefanie , Witt Christian , Liebers Uta 
Published: February 2020

ZUSAMMENFASSUNGPatienten mit chronischen Lungenkrankheiten sind von den Auswirkungen zunehmender Hitzewellen besonders betroffen, da die Lunge als „Grenzorgan zur Umwelt“ wirkt. COPD- und Asthma-Patienten reagieren mit verstärkter Bronchokonstriktion und stärkerer Entzündungsreaktion der Bronchialschleimhaut auf Hitzestress, was zur Symptomzunahme bis hin zur Hospitalisierung führen kann. Dies führt auch zu einem Anstieg der Mortalität.Zur Prävention von Hitzestress im Krankenhaus können infrastrukturelle Anpassungen wie ein verbesserter Sonnenschutz oder das Anbringen von Kühldecken (konvektionsfreies Air Conditioning) vorgenommen werden. Ebenso können ein Monitoring der Flüssigkeitsaufnahme, körperliche Schonung und effektive Lüftungsregime Hitzestress abmildern. Im Falle Hitze-assoziierter Exazerbationen von COPD-Erkrankungen liegen erste Hinweise auf den therapeutischen Nutzen einer Krankenzimmer-Klimatisierung mit einer Raumtemperatur von 23° C vor. Hierfür bietet sich aufgrund energetischer und hygienischer Vorteile eine innovative Kühlung mithilfe konvektionsfreier Raumklimatisierung an. So könnte Patienten mit Hitze-assoziierter Krankheitsprogression ein ganzheitliches, über die traditionelle medikamentöse Therapie hinausgehendes, Behandlungskonzept angeboten werden.Bei zukünftig häufigerem und intensiverem Hitzestress wird die Notwendigkeit präventiver Maßnahmen für Patienten mit chronischen Atemwegs-Krankheiten steigen. Zusätzlich wird für besonders vulnerable Gruppen der Bedarf an Raumklimatisierung steigen.
Sekundäre Neuroprotektion beim Glaukom durch Lebensstiländerungen
Authors: Rüfer Florian 
Published: February 2020

ZusammenfassungGlaukompatienten wird neben der IOD-senkenden Therapie häufig eine gesunde Lebensweise empfohlen. Es wird dargestellt, wie diese definiert werden kann und welche sekundär neuroprotektiven Mechanismen dadurch angesprochen werden. Eine neuroprotektive Maßnahme liegt im Vermeiden von häufiger vorkommenden neurotoxischen Belastungen wie Zigarettenrauchen, Ethanol-, Methanol- oder Bleiintoxikationen. Die Ernährung sollte ausreichend abwechslungsreich sein und damit insbesondere einem Vitamin-B12- und Folsäuremangel vorbeugen. Durch eine Überernährung mit nachfolgendem metabolischem Syndrom kann es zu einer IOD-Erhöhung, zu einem arteriellen Hypertonus und zu einer erhöhten Steroidkonzentration kommen. Als weitere Folge kann das metabolische Syndrom zu einer eingeschränkten Nierenfunktion führen, wodurch neurotoxische Substanzen im Blut akkumulieren können. Sinnvoll sind vermehrte körperliche Ausdauerbelastungen zur Kalorienverbrennung und eine reduzierte Kalorienzufuhr. Als Gegenentwurf zur übermäßigen Kalorienzufuhr werden beim Fasten Ketonkörper wie Aceton, Acetoacetat und β-Hydroxybutyrat gebildet, denen durch eine zusätzliche Energieversorgung der Mitochondrien eine neuroprotektive Wirkung zugeschrieben wird. Eine ketogene Stoffwechsellage kann auch durch eine fettreiche Diät erreicht werden, die aber aufgrund der damit verbundenen kardiovaskulären Risiken nicht allgemein empfohlen werden kann. Durch Ausdauersport kann neben der Kalorienverbrennung eine Verminderung von Ängsten und Depressionen bewirkt werden, und es werden Neurotrophine mit einer ebenfalls neuroprotektiven Wirkung freigesetzt. Genetisch bedingte oder erworbene mitochondriale Dysfunktionen können gleichermaßen eine Rolle bei der glaukomatösen Optikusatrophie spielen. Insofern kann die Kenntnis sekundär neuroprotektiver Mechanismen durch eine kompetente Beratung der Patienten dazu beitragen, Risiken für den N. opticus zu minimieren und eine Homöostase der Stoffwechselprozesse am N. opticus wiederherzustellen.
MarkeTrak 10: History and Methodology
Authors: Powers Thomas A. , Rogin Carole 
Published: February 2020

AbstractMarkeTrak has been conducted on a regular schedule for over 30 years to take the pulse of the hearing health care market and of consumers with hearing loss. The current version, MarkeTrak 10 (MT10), builds on the successful completion of MarkeTrak 9, with the same two objectives: to estimate hearing difficulty, hearing aid usage, and adoption of hearing aids in the United States and to gain insights into the consumer's journey through the hearing health care delivery system. In addition, MarkeTrak 10 added additional questions regarding use and satisfaction with Personal Sound Amplification Products (PSAPs) by both owners and nonowners of hearing aids.
Describing buoys from the perspective of discourse markers
Authors: Gabarró-López Sílvia 
Published: February 2020

AbstractThis paper provides a description of the distribution of buoys across genres and of their possible functions as discourse markers in French Belgian Sign Language. We selected a sample of dialogic genres – argumentative, explanatory, narrative, and metalinguistic – produced by different signers from the LSFB Corpus. In our dataset, buoys are unequally distributed across genres, and list and fragment buoys are the most frequent. Apart from a pointer and a point buoy, only some list buoys have discourse-marking functions, including enumeration, alternative, and addition. On the basis of the distribution of all types of buoys, the narrative dialogic genre is the most different as compared to the other three genres. It is characterized by a lower frequency of list buoys and a higher frequency of fragment buoys. When focusing on discourse-marking buoys, the explanatory genre attracts the highest number of tokens, which we relate to the higher degree of preparation as compared to the other genres.
To shift or not to shift
Authors: Hübl Annika , Maier Emar , Steinbach Markus 
Published: February 2020

AbstractThere are two main competing views about the nature of sign language role shift within formal semantics today:Quer (2005)and Schlenker (2017a,b), following now standard analyses of indexical shift in spoken languages, analyze it as a so-called ‘monstrous operator’, whileDavidson (2015)andMaier (2017), following more traditional and cognitive approaches, analyze it as a form of quotation. Examples of role shift in which some indexicals are shifted and some unshifted pose a prima facie problem for both approaches. In this paper, we propose a pragmatic principle of attraction to regulate the apparent unshifting/unquoting of indexicals in quotational role shift. The analysis is embedded in a systematic empirical investigation of the predictions of the attraction hypothesis for German Sign Language (DGS). Results for the first and second person pronouns (ix1andix2) support the attraction hypothesis, while results forhereare inconclusive.
Biosynthesis of the widely distributed hydrocarbon (Z,Z)-6,9-heptadecadiene in astigmatid mites
Authors: Moriyama Daisuke , Shimizu Nobuhiro 
Published: February 2020

ABSTRACT
Using a crude enzyme solution prepared from astigmatid mites, the conversion reaction to (Z,Z)-6,9-heptadecadiene (6,9-C17) using linoleyl aldehyde (LAld) as a substrate was successful. The mass spectrum of the reaction product using 13C-labeled LAld as a substrate could be assigned as 13C-labeled 6,9-C17. Unlike the findings in other species, the decarbonylase derived from mites did not require a coenzyme.
Association of sudden sensorineural hearing loss with chronic periodontitis
Authors: Panda Khirod Chandra , Bhuyan Lipsa , Ramchander Puppala Venkat 
Published: February 2020

Objective:
To find the overall association of sudden sensorineural hearing loss (SSNHL) and chronic periodontitis (CP) between case and control among the patients with comorbidities like diabetes mellitus, hypertension and obesity.

Design:
Case-control study comprising 351 subjects with SSNHL and 1101 controls without SSNHL. Both the case and control groups had the individuals with CP and/or CP with diabetes mellitus, hypertension and obesity.

Results:
We have shown the significant association of SSNHL with CP (p < .05; odd ratio 3.565, 95% confidence interval = 2.566–4.953). The comorbidities stratified analysis revealed a significantly higher risk of SSNHL with CP in the presence or absence of diabetes mellitus, hypertension and obesity (p < .05).

Conclusion:
We found a significant association of SSNHL with CP. Further, we highlighted the exclusive association of SSNHL and CP, even in cases of CP with or without other comorbidities like diabetes mellitus, hypertension and obesity. More studies must be conducted only with cases having SSNHL and CP for these results to be supported.
Separability of symmetric states and vandermonde decomposition
Authors: Qian Lilong , Chen Lin , Chu Delin 
Published: February 2020

Abstract
Symmetry is one of the central mysteries of quantum mechanics and plays an essential role in multipartite entanglement. In this paper, we consider the separability problem of quantum states in the symmetric space. We establish the relation between the separability of multiqubit symmetric states and the decomposability of Hermitian positive semidefinite matrices. This relation allows us to exchange concepts and ideas between quantum entanglement and Vandermonde decomposition. As an application, we build a suite of tools to investigate the decomposability and show the power of this relation both in theoretical and numerical aspects. For theoretical results, we establish the witness for the decomposability similar to the entanglement witness and characterize the decomposability of some subclasses of matrices. Furthermore, we provide the necessary conditions for the decomposability. Besides, we suggest a numerical algorithm to check whether a given matrix is decomposable. The numerical examples are tested to show the effectiveness.
Waveform control of currents in graphene by chirped few-cycle lasers
Authors: Wu Erheng , Zhang Chaojin , Wang Zhanshan , Liu Chengpu 
Published: February 2020

Abstract
The residual current density in monolayer graphene driven by an intense few-cycle chirped laser pulse is investigated via numerical solution of the time-dependent Schrödinger equation in the light-field-driven regime. Strikingly, it is found that a purely chirped laser pulse breaks the inversion symmetry in graphene, generating a residual directional current, which is absent for a Fourier-transform limited pulse (2017 Nature
550 224) and is attributed to the chirp-dependent Landau–Zener–Stückelberg interference among different quantum pathways in the reciprocal space. Moreover, the directionality of such a current changes with laser chirp rate following a sine-functional way, which possibly provides a novel application in ultrafast photo-electronics based on two-dimensional materials.
Formation and magnetic properties of Ga–Pd–Tb 2/1 approximant
Authors: So Y G , Takagi K , Sato T J 
Published: February 2020

Abstract
The formation and magnetic properties of Tsai-type approximants in the Ga–Pd–Tb system were investigated. The 2/1 approximant with a lattice parameter of 2.313 nm formed in the Ga50.2Pd35.3Tb14.5 alloy annealed at 973 K for 100 h. The 2/1 approximant transformed into the corresponding 1/1 approximant through annealing at 1073 K in the alloy. For the 2/1 approximant, magnetic susceptibility measurements showed a sharp cusp at T
N ∼ 5.8 K, and both the field-cooled and zero-field-cooled susceptibilities coincided, indicating an antiferromagnetic transition at T
N. This is the first instance of long-range magnetic order in 2/1 approximants. On the other hand, spin-glass-like behavior was observed in the susceptibility for the 1/1 approximant, which may be attributed to the relatively large frustration of the icosahedral clusters in the 1/1 approximant.
Direct observation of the local atomic structure in two types of Au-Ge-Yb 1/1 approximants
Authors: Taguchi T , So Y G 
Published: February 2020

Abstract
The local atomic structure in two types of Tsai-type 1/1 quasicrystal approximants in the Au-Ge-Yb system were observed using scanning transmission electron microscopy (STEM). The high-angle annular dark-field (HAADF) imaging method in STEM was employed to detect the difference in local atomic structure at the cluster centers for both compounds. Two types of cluster centers were observed in the different compounds: a tetrahedron with various orientations and a single Yb atom. Furthermore, atomic-resolution energy-dispersive X-ray spectroscopy showed direct evidence for the presence of a single Yb atom at the cluster center for the later compound.
Diffraction of a model set with complex windows
Authors: Baake Michael , Grimm Uwe 
Published: February 2020

Abstract
The well-known plastic number substitution gives rise to a ternary inflation tiling of the real line whose inflation factor is the smallest Pisot-Vijayaraghavan number. The corresponding dynamical system has pure point spectrum, and the associated control point sets can be described as regular model sets whose windows in two-dimensional internal space are Rauzy fractals with a complicated structure. Here, we calculate the resulting pure point diffraction measure via a Fourier matrix cocycle, which admits a closed formula for the Fourier transform of the Rauzy fractals.
Quasiperiodic tilings in hyperbolic space
Authors: Lück Reinhard 
Published: February 2020

Abstract
The standard methods to derive quasiperiodic patterns in Euclidean space were tested for hyperbolic space, which is represented by the Poincaré disc. A novel method to transform the icosahedral tiling of rhombohedra into the Poincaré disc is discussed.
Pentagonal quasicrystals and their linear self-similarities
Authors: Masáková Zuzana , Mazáč Jan 
Published: February 2020

Abstract
We recall the construction of a cut-and-project scheme providing planar model sets with 5-fold symmetry. The cut-and-project construction consists in projecting points of a lattice ℒ ⊂ ℝ4 by two orthogonal projections π
||, π
⊥ to two 2-dimensional subspaces. We describe the set of all linear mappings preserving the ℤ-modules π
||(ℒ) and π
⊥(ℒ) and show that the set of all such mappings is in a correspondence with a 2-dimensional cut-and-project set. Finally, we describe linear self-similarities of a pentagonal cut-and-project set with circular acceptance window.
Preparations and Properties of Nano-Structured AlxO/i-AlCuFe as Quasicrystalline Thermoelectric Composites
Authors: Huang J R , Takagiwa Y , Tsai A P 
Published: February 2020

Abstract
Nano-structured AlxO/i-AlCuFe quasicrystalline composites were synthesized using spark plasma sintering. In this study, the atomized i-AlCuFe powders (nominal with Al64Cu24Fe12) were calcined at 973 K for several hours to obtain the core-shell-like structure with AlxO and i-AlCuFe. AlxO layers grew from tens to a hundred of nanometers in thickness as the calcination duration increased. In other words, the Al content decreased within the i-AlCuFe owing to the formation of AlxO. The loss of Al dominated the electron transportation behavior, which triggered an N-type to P-type transition when the Al content was below 64 at%.
Analyzing by the Two-Level System and Conduction Mechanism of Icosahedral Quasicrystals CdYb and CdMgYb
Authors: Kanazawa I , Sekiyama Y , Maeda R , Nakajima M 
Published: February 2020

Abstract
We have presented one of possible mechanisms for anomalous transport properties in Tsai-type quasicrystals CdYb and CdMgYb. The tunneling process between the Tsai-type clusters has been argued in dilute bound approximation of dynamics of the two-level system.
Brownian motion and Edagawa phasons
Authors: Trebin Hans-Rainer , Lipp Hansjörg 
Published: February 2020

Abstract
The so far most direct observation of phasons was reported in the year 2000 by Edagawa et al. In HRTEM images of decagonal Al-Cu-Co they detected white spots which formed vertices of a quasiperiodic tiling. Some spots vanished and reappeared in phason flipped positions within seconds to minutes. Already at ICQ13 we had applied a structure model of Zeger and Trebin of the year 1996 to explain the physical origin of the spots and the time scale of the flips. We found that the spots are columns of ten-rings of atoms which change positions by fluctuations of atomistic phason flips. Thus they resemble Brownian motion of mesoscopic particles, which are pushed by fluctuating knocks of fluid molecules. Whereas Brownian motion is described by a random walk in continuous space, Edagawa phasons can be conceived as a random walk on a quasilattice.
C60 on impurity phases of the 2–fold surface of the Al–Pd–Mn quasicrystal
Authors: Coates Sam , Sharma Hem Raj , McGrath Ronan 
Published: February 2020

Abstract
Using STM, we show several off-stoichiometric impurity phases detected at the 2-fold Al–Pd–Mn quasicrystal surface. By comparing the observed surface structure to planes from similar bulk phases in the Al–Pd system, we identify these phases as β–Al–Pd and Pd5Mn3. C
60 is adsorbed at these domains, forming simple hexagonal close packed (hcp) structures. We identify potential adsorption schemes, and compare the adsorption behaviour to C60 on the quasicrystalline phase.
A Comparison between Si and SiC MOSFETs
Authors: Wang Jiawei 
Published: February 2020

Abstract
The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) has developed quickly and become one of the most important devices for a wide range of applications. There is an increasing need for power MOSFET devices with low power consumption and high energy efficiency. Silicon (Si) and Silicon Carbide (SiC) are two kinds of materials used in power MOSFET devices, which have their own advantages of performance for each use. This paper makes a comparison of the on-resistance and high-temperature performance between Si and SiC MOSFETs. The analysis of the differences between the two will mainly come out from the perspective of material properties, and the conclusion of what is the ideal material for power MOSFET devices will be finally drawn.
Distributed Energy Storage Optimization Configuration of Active Distribution Network
Authors: Zhe Jiang , Liang Wang , Xuxiang Huang , Xueshan Han , Dong Yang , Ning Zhou 
Published: February 2020

Abstract
With the high proportion of renewable energy access to the distribution network, the volatility and randomness of renewable energy output will have a serious impact on the distribution network, especially at the peak of renewable power output, the reverse trend phenomenon is obvious. The active distribution network displays the “power” characteristics externally, which makes the voltage problem and transmission congestion problem in the distribution network very serious. This paper establishes a distributed energy storage optimization configuration model that takes into account the voltage quality, and considers the energy storage operation strategy optimization in the energy storage site selection and volume model, which makes the energy storage configuration more reasonable, improves the voltage quality and enhances the renewable energy consumption capacity, improve the economics of system operation.
Antibacterial performance of Ag-doped TiO2/wood surface under visible light irradiation and its superior mould-resistance
Authors: Zhang Fu’an 
Published: February 2020

Abstract
The TiO2/wood (TW) based on fast-growing poplar wood was in situ synthesized through one-step solvothermal method and then Ag-doped TiO2/wood (ATW)was also prepared via the solvothermal method. The morphologies, crystal structure, and chemical characteristics of the composites were carried out by SEM, XRD, XPS and FTIR. The results of XPS and FTIR showed that the nanoparticles (TiO2 and Ag) were chemically bonded to the wood surface through the combination of hydrogen groups. Spherical-like Ag nanoparticles (Ag-NPs) was about 66 nm diameter. What’s more, the TW and ATW showed excellent antibacterial against Gram positive and negative bacterium under visible light irradiation and mould-resistance properties, which illustrated a significance and practical value in high added-value of wood.
Research on fire prevention and extinguishing technology in underhand working face of easy spontaneous combustion coal seam
Authors: Liu Xueli , You Jijun 
Published: February 2020

Abstract
The management of fire prevention and extinguishing in goaf becomes a major problem due to short spontaneous combustion period, poor roof caving conditions, large air leakage in goaf and difficulties for grouting. Oxygen consumption rate and the productivity of carbon monoxide are measured through the XK-VI spontaneous combustion test-bed, while prediction index gas for spontaneous combustion of the coal is obtained. Through the engineering practice test, the range of the gob “triple-zone” under the condition of nitrogen injection is acquired. Take 113101 working face of Bojianghaizi coal mine as an example. The method for detecting the fire prevention effect is to inject nitrogen into the goaf, supplemented by measures such as forced anchoring in the intake and return wind lane, constructed of the sandbags separation wall, and embedded the beam tube through the goaf. The volume fraction of carbon monoxide in the return corner and the R2 value are used as predictors of fire prevention. Engineering practice test shows that there is no danger of spontaneous combustion in the working face when the volume fraction of carbon monoxide in the return corner is less than 200*10−6 and the value of R2 is less than 0.2. The process has reference significance for the fire prevention management of the Bojianghaizi Mine and other similar conditions.