bluuebunny/crossref_metadata_2025_split huggingface dataset:
Posterior Fossa Arteriovenous Malformations: Experience with 14 Patients and a Systematic Review of the Literature
Authors: Corniola Marco V. , Meling Torstein R. , Bijlenga Philippe , Bernava Gianmarco , Machi Paolo , Schaller Karl 
Published: October 2019

Abstract
Background The optimal management of posterior fossa arteriovenous malformations (pfAVMs) is a matter of debate. To advance this discussion, we present our clinical series and the results of a systematic literature review according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines.
Methods Fourteen consecutive patients with pfAVMs were admitted between 2007 and 2018. Preoperative status, radiologic parameters, and outcome were assessed. A systematic literature review was performed according to the PRISMA-P guidelines.
Results Ten patients presented with rupture (71%), of whom three had associated aneurysms (AAs). The treatments were microsurgery (n = 4), endovascular (n = 3), radiosurgery (n = 2), a combination of two or three treatment modalities (n = 3), or conservative (n = 2). At discharge, all four patients (100%) with unruptured pfAVMs had a good outcome (modified Rankin Scale [mRS]: 0–2). In contrast, in ruptured pfAVM cases, mRS was 0 to 2 in four patients (40%), mRS 3 to 4 in two (20%), mRS 5 in three (30%), and one patient (10%) died within 30 days after gamma knife treatment due to pancreatitis secondary to chronic alcohol abuse. At discharge, four patients (29%) had persistent preinterventional cranial nerve and/or focal neurologic deficits. The literature review identified 63 articles with 1,753 pfAVM patients. Overall, 66% of pfAVMs presented with rupture, and AAs were found in 20% of the cases, which is higher than in supratentorial AVMs (stAVMs).
Conclusions Because pfAVMs are associated with higher rates of hemorrhagic presentation, higher rates of morbidity and mortality when ruptured, and have a higher incidence of AAs compared with stAVMs, early curative treatment is recommended as soon as the diagnosis is established, regardless of rupture status.
Accelerated Clustered Sparse Acquisition to Improve Functional MRI for Mapping Language Functions
Authors: Keil Phillip , Nettekoven Charlotte , Weiss Kilian , Lichtenstein Thorsten , Goldbrunner Roland , Giese Daniel , Weiss Lucas Carolin 
Published: October 2019

Abstract
Background Functional magnetic resonance imaging (fMRI) is a useful method for noninvasive presurgical functional mapping. However, the scanner environment is inherently unsuitable for the examination of auditory and language functions, due to the loud acoustic noise produced by the scanner. Interleaved acquisition methods alleviate this problem by providing a silent period for stimulus presentation and/or response control (sparse sampling) but at the expense of a diminished amount of data collected. There are possible improvements to these sparse acquisition methods that increase the amount of data by acquiring several images per event (clustered sampling). We tested accelerated clustered fMRI acquisition in comparison with conventional sparse sampling in a pilot study.
Methods The clustered and sparse acquisition techniques (7.4 minutes scanning time per protocol) were directly compared in 15 healthy subjects (8 men; mean age: 24 ± 3 years) using both a motor (tongue movement) and a language (overt picture-naming) task. Functional imaging data were analyzed using Statistical Parametric Mapping software (SPM12 Wellcome Department of Imaging Neuroscience, London, UK). For both tasks, activation levels were compared and Euclidean distances (EDs) between cluster centers (i.e., local activation maxima and centers of gravity) were calculated. Overlaps and laterality indices were computed for the picture-naming task. In addition, the feasibility of the clustered acquisition protocol in a clinical setting was assessed in one pilot patient.
Results For both tasks, activation levels were higher using the clustered acquisition protocol, reflected by bigger cluster sizes (p < 0.05). Mean ED between cluster centers ranged between 9.9 ± 5.4 mm (left superior temporal gyrus; centers of gravity) and 16.6 ± 13.2 mm (left inferior frontal gyrus; local activation maxima) for the picture-naming task. Overlaps between sparse and clustered acquisition reached 88% (Simpson overlap coefficient). A similar activation pattern for both acquisition methods was also confirmed in the clinical case.
Conclusion Despite some drawbacks inherent to the acquisition technique, the clustered sparse sampling protocol showed increased sensitivity for activation in language-related cortical regions with short scanning times. Such scanning techniques may be particularly advantageous for investigating patients with contraindications for long scans (e.g., reduced attention span).
Pulmonary Complications of Cystic Fibrosis
Authors: Garcia Bryan , Flume Patrick A. 
Published: October 2019

AbstractCystic fibrosis (CF) lung disease is characterized by the development of progressive bronchiectasis and impaired lung function with severe airflow obstruction. CF patients suffer from shortened life expectancy, primarily driven by respiratory failure. The mechanism by which CF lung disease develops is the result of an interplay of multiple intrinsic and extrinsic factors including genotype, abnormalities in mucus composition and movement, chronic inflammation, and chronic airway infection. Although all CF patients are at increased risk for pulmonary complications including hemoptysis, pneumothorax, pulmonary hypertension, and chronic hypoxic and hypercapnic respiratory failure, the risk of developing these complications increases with progression of lung disease. The focus of this article is to summarize the pathophysiology, epidemiology, and management of these key pulmonary complications.
Phylogenetic dispersion and diversity in regional assemblages of seed plants in China
Authors: Qian Hong , Deng Tao , Jin Yi , Mao Lingfeng , Zhao Dan , Ricklefs Robert E. 
Published: October 2019

Significance
Ecological and evolutionary processes work together in the assembly of regional and local communities from available species pools based on species traits linked to ecological tolerances. Because phylogenies summarize the evolutionary history of the clades within them, phylogeny-based approaches are essential to understanding the origin of variation in species richness across environmental gradients. Here, we analyze, within a phylogenetic context, a comprehensive dataset on the distributions of seed plants in China. Specifically, we examined relationships between indices of phylogenetic structure and environment for individual clades, from taxonomic families to the root of the phylogeny of the Chinese seed plants. We found that phylogenetic niche conservatism plays an important role in the assembly of regional floras in China.
Passive membrane transport of lignin-related compounds
Authors: Vermaas Josh V. , Dixon Richard A. , Chen Fang , Mansfield Shawn D. , Boerjan Wout , Ralph John , Crowley Michael F. , Beckham Gregg T. 
Published: October 2019

SignificanceIn nature, plants and microbes process substantial amounts of aromatic carbon for lignin biosynthesis and breakdown, respectively. These natural processes have important implications in the pursuit of lignin valorization, which is crucial for a vibrant, global bioeconomy. In both plant and microbial systems, an open question remains regarding how lignin-related aromatic compounds are transported across compartmental membranes, either by active membrane transporters or via passive membrane crossing. In this study, we predict that passive transport processes in plants and bacteria for uncharged aromatic compounds are likely sufficient for lignin biosynthesis and catabolism, thus implying that membrane translocation rates are controlled by compound delivery and utilization rates and membrane concentration gradients.
Long-wavelength fluctuations and anomalous dynamics in 2-dimensional liquids
Authors: Li Yan-Wei , Mishra Chandan K. , Sun Zhao-Yan , Zhao Kun , Mason Thomas G. , Ganapathy Rajesh , Pica Ciamarra Massimo 
Published: October 2019

Significance
Long-wavelength elastic modes, which have an infinitesimal energy cost, destroy the long-range translational order of 2D solids at finite temperatures. Here we demonstrate that these long-wavelength fluctuations also influence the dynamical properties of 2D systems in their normal liquid regimes. Hence, long-wavelength fluctuations make 2- and 3D molecular particulate systems behave differently from high- to very low-temperature regimes.
Language use nowadays in Russian communication
Authors: Klushina Natalia I. , Liulikova Anna V. , Nikolaeva Anastasia V. , Selezneva Larisa V. , Skorokhodova Elena Yu. , Tortunova Irina A. 
Published: October 2019

Abstract
This article presents linguistic and communicative transformations in socially significant areas of modern
communication in Russia. The authors apply a historical-comparative method as well as diachronic description and interpretation to
analyze the processes taking place under the influence of intra- and extra-linguistic factors in various Internet and media
genres, such as advertising, business and professional communication. It was found that the fusion of the features of
communication and publication, the combination of dialogue and polylogue determine the “clickbait” nature of blogs and make
blogging the most influential genre of Internet communication. The growing influence of oral speech and corporate rules in the
field of business communication underlies the trend toward agrammatism of phrases. Innovations in the field of advertising
manifest themselves on the verbal level of the slogan and its implicit influence on the recipient.
Deformation of cavitation bubbles at their strong expansion and collapse in a streamer
Authors: Aganin A A , Davletshin A I , Khalitova T F 
Published: October 2019

Abstract
Deformation of initially spherical cavitation bubbles is considered in the case of their strong single expansion and subsequent collapse in a streamer consisting of three bubbles located in one straight line. The central bubble is equidistant from the others. The influence of the distance between the bubbles is studied in the range, in which the non-sphericity of the central bubble during the collapse does not exceed 20%. The expansion of the bubbles and the most part of their collapse is governed by the ordinary differential equations of the second order in the radii of the bubbles, the positions of their centers on the line of their interaction, and the amplitudes of their axisymmetric non-sphericity in the form of spherical harmonics. In doing so, the interaction between bubbles is taken into account, the assumptions of weak liquid compressibility, homobaricity of bubbles, and their small non-sphericity are used. The final of the collapse of each bubble is governed by the partial differential equations of gas dynamics. In doing so, the interaction of bubbles is ignored, but the axial symmetry of bubbles, liquid compressibility, non-uniformity of vapor, heat conductivity of vapor and liquid are taken into account, wide-range equation of states for vapor and liquid are applied. It is shown that with decreasing the distance between the bubbles, the non-sphericity of the central bubble at the end of its collapse first slowly increases from zero and then quite rapidly grows. Along with that, the central bubble non-sphericity level of 1% is attained at the distance between the bubbles equal to about 20 times their radius at the moment of their maximal expansion. Simulation of the final high-speed stage of the bubble collapse by the model destined to the low-speed stage of expansion and collapse leads to significant overestimation of the non-sphericity of the central bubble at the end of its collapse.
Study of gas flow in a discharge chamber of a pulse plasma generator
Authors: Gabdrakhmanov Az T , Israphilov I H , Galiakbarov A T , Samigullin A D 
Published: October 2019

Abstract
This paper focuses the features of computer simulation of gas flow in a gas-discharge chamber of a pulsed plasma generator using the STAR-CCM + program. The influence of the method of supply and consumption of plasma-forming gas on the output parameters of the plasma generator is shown.
Estimation of the electric force effect on dispersed additives in the heterogenous combustion flame plasma in the electrostatic field presence
Authors: Zyryanov I A , Budin A G , Pozolotin A P , Kargapoltsev V V 
Published: October 2019

Abstract
In the work, the influence of the electric force from the external electric field on the charged dispersed particles in the flame was evaluated. It is assumed that changes in the effect of the field on the combustion rate in the presence of dispersed additives in the gas phase take place due to the heat flux into the burning polymer condensed phase changes. However, as it turned out, the flame front moving towards the fuel under the action of field forces does not allow to fully explain the combustion rate increase.
Dual-program impulse modulation of plasmatron power in processes of plasma spraying
Authors: Kadyrmetov A. M. , Sharifullin S.N. , Buhtoyarov V.N. , Snyatkov Ye.V. , Pustovalov A.S. 
Published: October 2019

Abstract
On the basis of analysis of plasma coating processes the influence of electrical parameters modulation of the remote arc on the temperature field in the “coating-base” system in the local scale, proportional to the diameter of the arc binding spot to the surface, and in the macro scale of sprayed surface is valued. Dual-program impulse modulation of plasmatron power, providing uniform distribution of the coating connection strength with the substrate layer based on uniform distribution of surface thermal activation and local zones of coating penetration on the sprayed surface is offered.
Propagation of compression wave in the liquid at collapse of a spherical gas cavity under non-isothermal conditions
Authors: Morenko I V 
Published: October 2019

Abstract
The problem of the collapse of a spherical gas cavity in a fluid under non-isothermal conditions is considered. Numerical simulation of the motion of a two-phase medium is based on the volume of fluid method (VOF). The numerical results of fluid pressure history at control points located at different distances from the center of the cavity during the process are obtained.
Classification of time series using the Hurst exponent
Authors: Nazarychev S A , Zagretdinov A R , Ziganshin Sh G , Vankov Yu V 
Published: October 2019

AbstractThe Hurst exponent allows to classify time series according to the level of their stochasticity. To calculate it, the rescaled range analysis (R/S analysis) is applied. The article presents the R/S analysis algorithm. A program has been developed in the LabView programming environment. Performance check program carried out on the model signals.
The application of pulsed discharge for sterilization of freeze-dried product
Authors: Ya Asadullin T , Galeev I G , Sofronitskiy A O 
Published: October 2019

Abstract
Freeze-dried products are food products prepared by using the freeze-drying method. Freeze-drying is a technology of removing water from fresh products by vacuum method. In the production of food products it allows almost completely preserve their nutrients, vitamins, minerals, even the original form, natural smell, taste, color under a various of storage conditions. During the drying process, the residual water content reaches a value of about 10%. For safe and secure preservation of dehydrated products, it is necessary to sterilize them and the package proper during the packaging process. For the purpose, it is convenient to use a pulsed gas discharge, which will be ignited inside the package during the vacuuming process. The pulsed nature of the discharge provides high efficiency of creating sterilizing agents in the form of ozone and ultraviolet radiation at low heat deposition. Air exhaust removes gaseous reaction products caused by the discharge. The porosity and dielectric properties of freeze-dried products provide high quality sterilization.
Surface activation of polyamide fibers by radio-frequency capacitive plasma for application of functional coatings
Authors: Timoshina Y A , Voznesensky E F , Tskhay E S , Sysoev V A , Krasina I V , Kulevtsov G N 
Published: October 2019

Abstract
The results of experimental researches on the modification of polyamide fibrous materials for technical purposes by low-pressure radio-frequency capacitive discharge plasma are presented. The effect of plasma modification on the wettability of polyamide fibers and their adhesive properties was studied.
About the role of tribroplasma in the process of water extract from the exhaust tract of the engine of internal combustion when treating them by tribosettes
Authors: Sharifullin S N , Dunaev A V 
Published: October 2019

Abstract
The abundant water release during the processing of ICE by tribosystems was observed by many practitioners of PBC repair. The hypotheses of its causes are ambiguous. Some say that the source of water is motor oil or decomposition of pollution of ICE. Others believe that the source of water is humid air. Still others emphasize that water emission is concealed in the exhaust tract of the engine with neutralizers and turbochargers. There is a saying that this is just a condensate discharge from the engine exhaust tract. However, abundant water release occurs only with the introduction of the PBC drug in the friction unit. It is believed that the main reason is associated with the presence of triboplasma, which is formed when the contact spots of the friction site mating surfaces come off. In the area of triboplasm, the tribopreparation undergoes a plasma-chemical reaction, is split with the release of high thermal energy, which creates other conditions for moist air, fuel, engine oil and ICE pollution. All interpretations of the causes of water emission may be erroneous, since it contradicts the prevailing ideas about the work of the internal combustion engine.
Research of mechanical characteristics thin coating
Authors: Yakupov S N , Yakupov N M 
Published: October 2019

Abstract
To solve many technical and economic problems, thin-walled coated structures are created. Coatings are usually formed directly on curved surfaces of structural elements and have a complex structure and complex surface relief. At the same time, some coatings are almost impossible to dismember from the substrate.
An approach to study the stiffness properties of non-separable coatings on a thin-walled substrate of complex shape, based on the fact that the tensile stiffness of the coating is equal to the difference in the stiffness of the substrate with the coating minus the stiffness of the thin-walled substrate. The experimental-theoretical method is used to estimate the stiffness. A formula for estimating the Poisson’s ratio for the initially flat version of the substrate in the elastic formulation for cases of small deflection is obtained. An example of an assessment of the hardness of the coating with the flat substrate. It was found that the stiffness of the coating is 53.3 % of the substrate stiffness.
The approach is effective in the study of the mechanical properties of coatings, especially when the stiffness of the coating and the substrate of the same order.
Application of the New Generation Large Capacity Synchronous Condenser in HVDC System
Authors: Guo Zhilin , Hao Liangliang , Wu Junyong 
Published: October 2019

Abstract
The AC dynamic reactive power compensation in high voltage direct current (HVDC) still remains an unsolved problem. Owing to its flexible and rapid reactive power output, synchronous condenser (SC) has a broad application prospect on sending and receiving ends of HVDC transmission system. Firstly, the system structure of a new large capacity SC is introduced. Secondly, reactive power dynamic characteristics of SC in sub-transient and transient are studied theoretically. Then its supporting effect on low bus voltage is analyzed and verified. On this basis, the reactive power application requirements of SC in DC system are studied. An actual transmission system model is established by PSCAD/EMTDC. The simulation verifies the suppression effect of SC on commutation failure and bus transient overvoltage, which provides a theoretical basis for the application of SC in HVDC system.
Smoothing Control Strategy of Wind Power Based on Adaptive Adjustment of Fluctuation Coefficient
Authors: Yi Luo , Kunlin Su , Jiye Yin 
Published: October 2019

Abstract
Due to the strong randomness and fluctuation of wind power, a direct access to the power grid will be an adverse effect on the quality of the power. The energy storage system can not only reduce the phenomenon of abandoned wind power, but also improve the quality of the power grid. In order to smooth the fluctuation of wind power, we propose a smooth control strategy of wind power based on adaptive adjustment of fluctuation coefficient is optimized. The optimal model is designed which is based on minimize the energy storage capacity. The method of sliding window and particle swarm optimization (PSO) is used to solve the problem The wind power grid-connected power value is obtained.
Digital Twin and AAS in the Industry 4.0 Framework
Authors: Bradac Z , Marcon P , Zezulka F , Arm J , Benesl T 
Published: October 2019

Abstract
The paper goes out from the state of the art in the area of Industry 4.0 initiative of the most developed countries. There are also discussed reasons of Industry 4.0 development and implementation into existing still developed technologies. According to the last development, the term digital twin became a very often-used word. Authors explain differences in the content of the digital twin and recommend to use for the Industry 4.0 area the more appropriate and precise specified term – the Asset Administration Shell (AAS). Next parts of the contribution therefore deal with the Asset Administration Shell (AAS) in details to enable engineers, technicians and informatics from the praxis much more simple introduction in the Industry 4.0 problems and their solution. There is introduced and explained the structure of the AAS, the model and sub-models architecture, parameters and features in the contribution.
A Stable Control Algorithm for Multi Robot Formation
Authors: Shakev Nikola , Topalov Andon V , Ahmed Sevil A , Popov Vasil L 
Published: October 2019

Abstract
This paper presents the developed trajectory tracking controller for a formation of nonholonomic robots, which combines features from the leader-follower and virtual-structure approaches. The implemented decentralized control strategy allows the robots to be relatively independent and to switch easily between the executed individual tasks and the collective tasks. Convergence is thoroughly analyzed and guarantied using the Lyapunov approach.
Combination of Virtual Private Network and Wireless Sensor Network: Protection Against The Interference Problem of IOT
Authors: Majumdar Pramathesh , Jain Rachna , Pandey Ayushi , Majumdar Rana , Khatri Sunil Kumar 
Published: October 2019

Abstract
As the era of the Internet of Things (IoT) is emerging rapidly, the interference problem is also increasing at the same pace. In IoT based connections, as we know that devices share a common communication channel to interact with each other, the interference problem arises as all the devices are connected. Once an attacker gains access to any of the devices in an IoT enabled network, the whole IoT network becomes susceptible to breach. The biggest example of it is the IoT enabled CCTV hacking. In this work, we are proposing the usage of Virtual Private Network (VPN) and Wireless Sensor Network (WSN) to create a virtual environment and to protect each device from IP address breach that is connected to an IoT network. Using VPN, each IoT device will gain their own virtual environment which will enable it for using a dynamic IP address to connect to another IoT device’s virtual environment. Using WSN, the virtual environments will be able to identify any signal interference that can cause any security breach.