bluuebunny/crossref_metadata_2025 huggingface dataset:
Susceptible and mCry3A resistant corn rootworm larvae killed by a non-hemolytic Bacillus thuringiensis Cyt1Aa mutant
Authors: Bravo Alejandra , López-Diaz Jazmin A. , Yamamoto Takashi , Harding Kathleen , Zhao Jian-Zhou , Mendoza Gretel , Onofre Janette , Torres-Quintero Mary-Carmen , Nelson Mark E. , Wu Gusui , Sethi Amit , Soberón Mario
Published: December 2018

The western corn rootworm (WCR)Diabrotica virgifera virgiferacauses substantial damage in corn. Genetically modified (GM) plants expressing someBacillus thuringiensis(Bt) insecticidal Cry proteins efficiently controlled this pest. However, changes in WCR susceptibility to these Bt traits have evolved and identification of insecticidal proteins with different modes of action against WCR is necessary. We show here for the first time that Cyt1Aa from Bt exhibits toxicity against WCR besides to the dipteranAedes aegyptilarvae. Cyt1Aa is a pore-forming toxin that shows no cross-resistance with mosquitocidal Cry toxins. We characterized different mutations in helix α-A from Cyt1Aa. Two mutants (A61C and A59C) exhibited reduced or absent hemolytic activity but retained toxicity toA.aegyptilarvae, suggesting that insecticidal and hemolytic activities of Cyt1Aa are independent activities. These mutants were still able to form oligomers in synthetic lipid vesicles and to synergize Cry11Aa toxicity. Remarkably, mutant A61C showed a five-fold increase insecticidal activity against mosquito and almost 11-fold higher activity against WCR. Cyt1Aa A61C mutant was as potent in killing WCR that were selected for resistance to mCry3A as it was against unselected WCR indicating that this toxin could be a useful resistance management option in the control of WCR.
Experimental severe malaria is resolved by targeting newly-identified monocyte subsets using immune-modifying particles combined with artesunate
Authors: Niewold Paula , Cohen Amy , van Vreden Caryn , Getts Daniel R. , Grau Georges E. , King Nicholas J. C.
Published: December 2018

Current treatment of severe malaria and associated cerebral malaria (CM) and respiratory distress syndromes are directed primarily at the parasite. Targeting the parasite has only partial efficacy in advanced infection, as neurological damage and respiratory distress are due to accumulation of host blood cells in the brain microvasculature and lung interstitium. Here, computational analysis identifies Ly6Clomonocytes as a major component of the immune infiltrate in both organs in a preclinical mouse model. Specifically targeting Ly6Clomonocyte precursors, identified by adoptive transfer, with immune-modifying particles (IMP) prevents experimental CM (ECM) in 50% ofPlasmodium bergheiANKA-infected mice in early treatment protocols. Furthermore, treatment at onset of clinical ECM with 2 doses of a novel combination of IMP and anti-malarial drug artesunate results in 88% survival. This combination confers protection against ECM and mortality in late stage severe experimental malaria and provides a viable advance on current treatment regimens.
BSA templated cerium/gold nanoclusters as pH and ROS dual sensors
Authors: Cang Jinshun
Published: December 2018

Bovine serum albumin-templated cerium/gold nanoclusters (BSA–Ce/Au NCs) possessing two emission bands at 410 and 680 nm as a dual probe for sensing of pH and reactive oxygen species (ROS) in cells.
Modulation of the mechanical energy storage performance of the MIL-47(VIV) metal organic framework by ligand functionalization
Authors: Yot Pascal G. , Wahiduzzaman Mohammad , Elkaim Erik , Fertey Pierre , Fabry Paul , Serre Christian , Maurin Guillaume
Published: December 2018

The functionalization of the metal–organic framework MIL-47(VIV) with ligand bearing bulky functional group –CF3 has been shown as a promising route to enhance the mechanical energy storage performances of this family of hybrid porous materials.
Straightforward formation of carbocations from tertiary carboxylic acids via CO release at room temperature
Authors: Bartalucci Niccolò , Bortoluzzi Marco , Zacchini Stefano , Pampaloni Guido , Marchetti Fabio
Published: December 2018

Formation of carbocations from phenyl-acetic acids is mediated by W(vi) chloride and takes place at room temperature with the extrusion of carbon monoxide.
Intrinsic multiferroicity in two-dimensional VOCl2 monolayers
Authors: Ai Haoqiang , Song Xiaohan , Qi Siyun , Li Weifeng , Zhao Mingwen
Published: December 2018

The coexistence of ferroelectricity and magnetism in VOCl2 monolayer which is mechanically strippable from the bulk material offers a tantalizing potential for high-density multistate data storage.
Synaptic plasticity, metaplasticity and memory effects in hybrid organic–inorganic bismuth-based materials
Authors: Mazur Tomasz , Zawal Piotr , Szaciłowski Konrad
Published: December 2018

Herein, we present memristive, thin film devices made of methylammonium bismuth iodide that exhibit a wide variety of neuromorphic effects simultaneously. Described materials have the potential to become universal cells in artificial neural networks.
Highly selective AlCl3 initiated intramolecular α-alkylation of α,β-unsaturated lactams and lactones
Authors: Xu Dawen , Kaiser Felix , Li Han , Reich Robert M. , Guo Hao , Kühn Fritz E.
Published: December 2018

100% atom economy, 15 examples, yields up to 98%, high regioselectivity, good functional group tolerance.
Antimicrobial polylysine decorated nano-structures prepared through polymerization induced self-assembly (PISA)
Authors: Luppi L. , Babut T. , Petit E. , Rolland M. , Quemener D. , Soussan L. , Moradi M. A. , Semsarilar M.
Published: December 2018

Polylysine decorated diblock copolymer nano-objects are prepared by polymerization-induced self-assemblyviaRAFT dispersion polymerization of 2-hydroxypropyl methacrylate. Antimicrobial properties of the resulting nano-objects evaluated using a gram positive bacteria.
Polymer conjugation of proteins as a synthetic post-translational modification to impact their stability and activity
Authors: Wright Thaiesha A. , Page Richard C. , Konkolewicz Dominik
Published: December 2018

This review article discusses the impact of polymer modification on bioconjugate performance, including both activity and stability, with a focus on how the polymer structure and functionality impact these parameters.
Optimizing the Cu-RDRP ofN-(2-hydroxypropyl) methacrylamide toward biomedical applications
Authors: Raus Vladimír , Kostka Libor
Published: December 2018

Aqueous Cu-RDRP ofN-(2-hydroxypropyl) methacrylamide was optimized to achieve co(polymers) of low dispersity and controlled molecular weight at high conversions.
High removal of thiophene from model gasoline by porous MIL-101(Cr)/SA hybrid membrane
Authors: Wu Wen Bing , Xue Sun , Chen Jian Hua , Li Xiao
Published: December 2018

Membrane separation technologies have great promising potential for applications in several industries.
The influence of molecular structure on collision radius for optical sensing of molecular oxygen based on cyclometalated Ir(iii) complexes
Authors: Di Ling , Xing Yang , Wang Xiaoning , Zheng Daoyuan , Yang Yang , Li Fayun
Published: December 2018

The triphenylamine substituents increased the collision radiuses of cyclometalated Ir(iii) complexes which leading to potential oxygen sensitivity.
Structural characterization of polysaccharides fromCordyceps militarisand their hypolipidemic effects in high fat diet fed mice
Authors: Huang Zhen-feng , Zhang Ming-long , Zhang Song , Wang Ya-hui , Jiang Xue-wen
Published: December 2018

Structural characterization and comparative evaluation of hypolipidemic activities of intracellular and extracellular polysaccharides fromCordyceps militaris.
29Si{27Al}, 27Al{29Si} and 27Al{1H} double-resonance NMR spectroscopy study of cementitious sodium aluminosilicate gels (geopolymers) and gel–zeolite composites
Authors: Greiser Sebastian , Gluth Gregor J. G. , Sturm Patrick , Jäger Christian
Published: December 2018

Double-resonance NMR spectroscopy applied to one-part alkali-activated materials shows how the silica starting material determines their phase assemblage.
Mechanism of oligosaccharide synthesis via a mutant GH29 fucosidase
Authors: Burgin Tucker , Mayes Heather B.
Published: December 2018

First unbiased transition path sampling study of a glycosynthase enzyme reveals single-step mechanism with oxocarbenium-like transition state.
Recent progress of transition metal nitrides for efficient electrocatalytic water splitting
Authors: Peng Xiang , Pi Chaoran , Zhang Xuming , Li Shuai , Huo Kaifu , Chu Paul K.
Published: December 2018

Recent advances in transition metal nitride-based catalysts for efficient electrochemical water splitting have been reviewed.
Poly(vinyl alcohol)-induced thixotropy of an l-carnosine-based cytocompatible, tripeptidic hydrogel
Authors: Das Mahapatra Rita , Dey Joykrishna , Weiss Richard G.
Published: December 2018

Sustained release of doxorubicin from a β-aminoacid-containing cytocompatible tripeptidic hydrogel which shows thixotropic behaviour after PVA-induction.
High throughput identification of Li ion diffusion pathways in typical solid state electrolytes and electrode materials by BV-Ewald method
Authors: Chen Dajun , Jie Jianshu , Weng Mouyi , Li Shucheng , Chen Dong , Pan Feng , Wang Lin-Wang
Published: December 2018

A new BV-Ewald method was developed to calculate Li-ion diffusion pathways more quickly and correctly.
One-pot synthesis of Fe/N/S-doped porous carbon nanotubes for efficient oxygen reduction reaction
Authors: Tan Zhong , Li Huanxin , Feng Qiaoxia , Jiang Lanlan , Pan Hongyu , Huang Zhongyuan , Zhou Qiang , Zhou Haihui , Ma Shuai , Kuang Yafei
Published: December 2018

Fe/N/S-doped porous carbon nanotubes with efficient oxygen reduction reaction catalytic activity were prepared by making full use of the multifunctional roles of FeCl3.
Confined pyrolysis for direct conversion of solid resin spheres into yolk–shell carbon spheres for supercapacitor
Authors: Du Juan , Liu Lei , Yu Yifeng , Lv Haijun , Zhang Yue , Chen Aibing
Published: December 2018

Confined nanospaces with different degrees of openness realized the conversion of solid resin spheres into core–shell carbon spheres with high supercapacitor performance.
Novel repulsive magnetic bearing flywheel system with composite adaptive control
Authors: Basaran Sinan , Sivrioglu Selim
Published: December 2018

Here, a novel flywheel structure is proposed with passive permanent magnet (PM) bearings in the radial and axial directions and an active magnetic bearing (AMB) in the axial direction. In the proposed structure, passive magnetic bearings do not provide a stable magnetic levitation in all directions, but it is possible to maintain the dynamic stability of the flywheel by using AMB in the axial direction. In the proposed bearing structure, radial repulsive magnetic bearings (RMBs) reduce the power consumption with less complexity in the bearing structure but impose disturbance forces that deteriorate the stability of the actively controlled flywheel system. A complete model of the flywheel system is derived and transformed for a control design. A Lyapunov‐based composite adaptive feedback control is designed for maintaining the stability under disturbances and a close convergence to the desired trajectory with fast parameter estimation. The performance of the composite adaptive control was experimentally verified for different cases using the RMB flywheel system. Additionally, a PID control was experimentally verified to demonstrate the usefulness of parameter estimation.
Discovery of accretion-driven pulsations in the prolonged low X-ray luminosity state of the Be/X-ray transient GX 304–1
Authors: Rouco Escorial A. , van den Eijnden J. , Wijnands R.
Published: December 2018

We present our Swift monitoring campaign of the slowly rotating neutron star Be/X-ray transient GX 304–1 (spin period of ∼275 s) when the source was not in outburst. We found that between its type I outbursts, the source recurrently exhibits a slowly decaying low-luminosity state (with luminosities of 1034 − 35 erg s−1). This behaviour is very similar to what has been observed for another slowly rotating system, GRO J1008–57. For that source, this low-luminosity state has been explained in terms of accretion from a non-ionised (“cold”) accretion disc. Because of the many similarities between the two systems, we suggest that GX 304–1 enters a similar accretion regime between its outbursts. The outburst activity of GX 304–1 ceased in 2016. Our continued monitoring campaign shows that the source is in a quasi-stable low-luminosity state (with luminosities a few factors lower than previously seen) for at least one year now. Using our NuSTAR observation in this state, we found pulsations at the spin period, demonstrating that the X-ray emission is due to accretion of matter onto the neutron star surface. If the accretion geometry during this quasi-stable state is the same as during the cold-disc state, then matter indeed reaches the surface (as predicted) during this later state. We discuss our results in the context of the cold-disc accretion model.
Siltation and Desilting Practices in A Runoff Reservoir on Heavy Sediment-Laden River
Authors: Wang Dangwei , Deng Anjun , Ji Zuwen , Shi Hongling
Published: December 2018

Sediment deposition in the reservoir of run-of-the-river power station is severe, in this paper we take upper Marsyangdi reservoir as an example to analyze sedimentation and desilting process according field data measured from September 2016 when the reservoir had just been impounded in order to find strategy for managing reservoir sedimentation. The ratio of Upper Marsyangdi reservoir capacity and volume of sediment into the reservoir is about 0.2. The reservoir arrived silt-stable in a year after impoundment with a depth of 12m deposition at the dam site. Most of sediment deposit in the periods that at the initial and the end of flood reason and it is found the flow rate is the key factor influencing trap efficiency because that due to damming velocity of medium flow decreased significantly compared to natural condition which caused numerous deposition. Based on result of analysis of deposition the desilting condition is determined. Empty flushing is proposed to release deposition after flood season when flow rate is greater than 100m3/s and the new capacity will last to next flood season. In order to reduce sediment concentration into diversion channel a desilting should be done in flood season when flow rate is larger than 200m3/s and flow rate for impound should not be more than 1/10 of that into reservoir which can avoid deposition during impoundment near dam site.
Application of Hybrid Particle Swarm Optimization Algorithm in the Optimal Water Operation of Cascade Reservoirs in Dry Season
Authors: Wang Sen , Yang Fang , Ma Zhipeng , Li Shanzong , Shi Yunyun
Published: December 2018

In this paper, a hybrid particle swarm optimization (HPSO) algorithm is proposed to solve the problem of optimal water operation of cascade reservoirs in dry season. Based on the basic particle swarm optimization (PSO) algorithm, chaos algorithm is introduced to traverse the search space to generate the initial population and improve the global searching ability of the algorithm. A self-adaptive inertial weighting method based on optimized inertial weighting coefficient is adopted to improve the ability of particle individual search and avoid local optimum. The proposed algorithm is applied to the optimal water operation in dry season of cascade reservoirs on the mainstream of Xijiang River. The results show that the HPSO algorithm can effectively improve the guarantee degree of ecological flow and suppressing salinity flow in the control reach of Wuzhou station under different typical dry year scenarios.
Optimized Operation of cascade reservoirs Considering Complementary Characteristics between wind and photovoltaic based on variational auto-encoder
Authors: Zhanga Hongxuan , Hua Wei , Yub Rui , Tangb Maolin , Dingc Lijie
Published: December 2018

The strong variations and uncertainties of high-penetration variable renewable energy sources (RESs) has greatly challenged the operation of power systems. Considering the rapid adjustability of hydropower to complement various RESs, in this paper, a coordinated optimization model is proposed for hydro-wind-solar integrated systems. Based on the variational auto-encoder, a scenarios generation method is proposed to capture the spatial-temporal complementary and fluctuant characteristics of wind and PV power with high model accuracy and low computational complexity. The detailed hydraulic and electrical relationship between cascade reservoirs are established to make full use of the controllable regulation capacity of cascade hydropower stations. With the linearization of the head-sensitive power generation and nonlinear water head, the optimization model is reformulated into a tractable mixed integer linear programming (MILP) formulation. A basin in Northwest China integrated with prolific wind and solar resources is selected for a case study. The computational experiments on actual data demonstrate the applicability of the proposed method.
The Effect of Runoff on Saltwater Intrusion in Weak Tide Estuary
Authors: shiyou Gao , Rongli Chen , chen Lu
Published: December 2018

Modaomen Estuary is a typical weak tidal estuary. The saltwater movement distance is not monotonic relationship with the tidal dynamics, it is also related to the strength of the salt wedge. In different phase of saltwater intrusion, saltwater intrusion distance has different responses to runoff. Through physical model tests, salt inhibition effect due to runoff at different stages had been studied. With the same total runoff in the half moon tidal cycle, methods of adjusting the amount of runoff distribution for better salt inhibition effect are proposed in the article. Increasing the runoff after neap tide can effectively inhibit the intrusion of saltwater.
Hydraulic method to determine the ecological flow for fish
Authors: Yan Jun , Fu Xuewei , Tian chengwei , Yang Zhenyu , Liu Qingyan
Published: December 2018

Social and economic development will influence the nature environment and lead to ecological problems, among which the ecological flow concerns the food chain and fish populations. Although there are many computation formulas for counting ecological flow, it is very difficult to unite and get reasonable values. According to the existing research of ecological flow, the concept and calculation method of ecological flow are analyzed, which shows that in a complex ecological system, ecological water requirement is difficult to meet the requirements of all the protection object of water requirement at the same time. Therefore, we should focus on the specific fish with reference value to build ecological protection object and determine the ecological flow. Furthermore, the ecological flow should be the regulation of water quality and water quantity in time and space. Using hydraulic method, the fish living space under different water flow environments can be determined, and specific time and space regulation schemes can be obtained.
Application of Laser Induced Breakdown Spectroscopy in Soil Element Analysis of Watershed
Authors: Chen C. P. , Hei L. , Yu S. C. , Chen W. L. , Cai M. X.
Published: December 2018

With the rapid development of spectroscopy technology, laser induced breakdown spectroscopy (LIBS) has become the focus of elemental analysis technology in recent years. With its advantages of non-destructive testing, rapid and multi-element detection, LIBS has been successfully applied to the analysis of geochemical characteristics of soil elements in river basins. The application of LIBS technology in soil elemental analysis of watershed is reviewed in detail. The accuracy of LIBS technology in soil element analysis is studied with the Masha River Basin as the research area. On this basis, the key problems in the process of soil element analysis, such as spectral enhancement methods and quantitative analysis methods, were analyzed. The analysis results show that the accuracy of elemental analysis between LIBS and traditional chemical methods is not much different, but the analysis time of LIBS method is shorter. Methods such as MLR, PLSR, and internal standard methods can improve the fit of the calibration curve and reduce the quantitative analysis error. By changing parameters such as laser energy and delay time, the spectral intensity can be enhanced to reduce the effects of matrix effects. In the process of elemental analysis, the effects of soil physical and chemical parameters should be considered comprehensively, and appropriate quantitative analysis methods should be adopted to improve the accuracy of the analysis results.
Response of land use changes on ecological water diversion in midstream of the Heihe River Basin
Authors: Su Longqiang
Published: December 2018

Based on the land use data in midstream of the Heihe River Basin in 1986, the CLUE-S model was used to simulate the land use distribution in 2000. In addition, the simulated map was verified by the land use map in 2000. Then the spatial pattern of land used in 2015 under the scenario without water diversion was simulated. The results show that the CLUE-S model could be applied to simulate the spatial pattern of land use changes in midstream of the Heihe River basin. Under both scenarios, cultivated land and construction land area showed a tendency of increasing. Forestland, pastureland and unused land showed a tendency of decreasing, while the convert tendency from unused land to other land use types was accelerated. The water surface area decreased under the scenario without water diversion, while under ecological water diversion scenario it showed a tendency of increasing. After the implementation of water diversion, the speed was accelerated. Under the scenario without water diversion, the main types of land use changes were cultivated land, pastureland and water surface area. Conversely, they were cultivated land, pastureland and unused land.
Practice of Information Construction of Hydrological Archives
Authors: Yu Qian , Yang Jinyan , Zhang Yijing
Published: December 2018

Hydrological work has developed rapidly with the advancement of national economy and social technology. China now has comprehensive hydrological projects and reliable hydrological station network involved with water level, rainfall, groundwater, evaporation, and sediment. Through the hydrological station network to collect the changes and movement rules of water in the natural world, the researchers sorted the obtained data parameters into hydrological materials, and compiled all the data materials and rules into hydrological archives. The records in the hydrological archives are the rules obtained from the long-term observation of hydrological conditions. In order to improve the utilization of hydrological archives, the information construction of hydrological archives can help people to avoid floods and disasters, and is conducive to the construction of water conservancy facilities, thereby promoting the development of national economy. This paper explains the importance and function of information construction of hydrological archives, and makes a prospect for water conservancy and other national economic construction departments to achieve better decision-making services, and proposes specific implementation measures.
APR Reduction Technique based on OFDM Pilot Filter Bank Limiting for Satellite Mobile Communications
Authors: Dai Tianfang
Published: December 2018

Combined with OFDM (Orthogonal Frequency Division Multiplexing), satellite mobile communications will effectively achieve on-demand communication in areas with an ultra-low density of users. With OFDM multiple access optimization, the bandwidth utilization efficiency can be increased by 5 to 10 times. However, satellites are power-constrained systems, so higher PAPR requires greater power backoff, resulting in a decline in satellite transmission capacity. To use OFDM technology in satellites, there are problems such as reduced transmission capacity resulted from high PAPR, complication of lowering PAPR, and difficulty in hardware implementation. In order to deal with the problem of high bit error rate and hardware implementation difficulties in PAPR reduction technique of non-orthogonal frequency division multiplexing, this paper proposes a limiting PAPR reduction technique with OFDM pilot filter banks for satellite mobile communications. Firstly, the applicability of OFDM in satellite mobile communications is analyzed, and the influence of high PAPR on satellite power utilization and the influence of frequency shift sensitivity on inter-satellite communication interference are obtained. Then design the PAPR reduction technique based on the pilot filter bank. By setting the tunable filter bank to the pilot, the sideband power suppression in the OFDM frequency domain is realized, and the PAPR of the OFDM signal is reduced. Finally, the experimental results show that the PAPR performance is improved by 3dB without reducing the bit error rate.
Automatic detection of pharyngeal fricative in cleft palate speech
Authors: He Fei , Zhou Geyi , He Xinyi , Yin Heng , He Ling
Published: December 2018

Pharyngeal fricative occurs during the production of consonants, which makes the consonants lose or weaken in cleft palate speech. In clinical application, the automatic detection of pharyngeal fricative in cleft palate speech could provide objective and effective assistant aids for speech language pathologists. In this paper, a novel acoustic parameter is proposed to detect the existence of pharyngeal fricative in cleft palate speech. This proposed acoustic feature ICPD (Independent Consonant Prominent Distribution) reflects the movement of mouth and tongue. The experimental results show that normal fricative has the higher ICPD. The extracted ICPD feature is combined with k-nearest neighbor classifier to achieve the automatic detection of pharyngeal fricative. The proposed system is tested on 127 speech samples recorded by cleft palate patients and 94 by normal speakers of controls. The overall pharyngeal fricative detection accuracy is around 90%.
Discover the Spatio-temporal Process of Typhoon Disaster Using Micro blog Data
Authors: Liang Chunyang , Lin Guangfa , Peng Junchao
Published: December 2018

When a disaster occurs, a large number of images and texts attached geographic information often flood the social network in the Internet quickly. All these information provide a new data source for timely awareness of disaster situations. However, due to the regional variation in the number of social media users and characteristics of information propagate in cyberspace, new problems arose in the pattern analysis of spatial point process represented by the check-in data, such as the correlation between check-in points density and disasters events density, the spatial relation between check-in points, the spatial heterogeneity of point pattern and associated influences. In this study, we took the No. 201614 Typhoon as an example and collected Sina Weibo data between September 14 and September 17, 2016 using keywords “Typhoon” and “Meranti”. We classified the Weibo texts using Support Vector Machine(SVM) algorithms, and constructed a disaster database containing relevant check-in information. In addition, considering the spatial heterogeneity of Weibo users, we proposed a weighted model based on user activity at the check-in points. Using Moran’s I of the global autocorrelation statistics, we compared the check-in data before and after adding weights and discovered obvious spatial autocorrelation of the check-in data in real geographical locations. We tested our model on Weibo data with keyword “rain” and “power failure”. The results show that series map generated by our model can reflect the typhoon disaster spatio-temporal process trends well.
Critical Node Identification for Electric Power Communication Network Based on Topology and Services Characteristics
Authors: Wang Zhihui , Ran Zhang , Chen Xiangzhou , Liang Yundan , Ren Zhengdong , He Yujun
Published: December 2018

It has an important impact on the overall power communication network reliability to identify the location of critical nodes in the network and further develop protection methods. On the topology layer of power communication network, Node Topology Importance(NTI) is proposed based on calculating the rate of natural connectivity of power communication network after one node being destroyed; A calculation method of power business is presented by considering the power business requirements on the indexes, then taking into account the business layer and topology layer, weighted natural connectivity which fuses the node business information and topology information is defined, accordingly Node Combining Importance(NCI) is proposed to realize the excavation of key node. Finally, taking a real communication network as the simulating example, the simulation results by comparing with other methods show that the proposed method can improve the accuracy of recognition.
Network Slicing to Enable Resilience and High Availability in 5G Mobile Telecommunications
Authors: He Qi , Ju Yunxia , Wang Jianguo , Zhao Gang , Qin Haiyong , Zhao Kai , Zhou Yilan , Li Min , Dong Qi
Published: December 2018

In the upcoming fifth-generation (5G) ecosystem, the delivery of a variety of personalized services is envisioned. With the development of software-defined networks and network function virtualization technologies, networks display increasingly flexible features, such as programmability. Network slicing is a state-of-the-art technology that provides services tailored to the specific demands of users, such as smart grids and e-health applications. In this article, we introduce the network slicing concept and its application and discuss related work. In addition, we propose an architecture for network slicing by combining software-defined networks and network function virtualization technologies. Finally, we note important challenges and open issues in the development and application of these technologies.
Acidithiobacillus ferrooxidans: performances on the low-grade polymetallic oxidized-manganese and sulfur-nickel ores redox system
Authors: Jin-xing Kang , Ya-li Feng , Hao-ran Li , Zhu-wei Du , Xiang-yi Deng , Hong-jun Wang
Published: December 2018

A simultaneous bioleaching process to extract nickel, cobalt, copper and manganese from polymetallic nodule and low-grade nickel sulfide ore by using Acidithiobacillus ferrooxidans is proposed in this study. Thermodynamic investigations and potential analysis showed that the selective leaching of Ni, Co, Cu, Mn is feasible. The electrochemical measurements reveal that A. ferrooxidans increases the potential difference between nodule anode and sulfide cathode. A. ferrooxidans leads to the negative shift of corrosion potential and the increment in electron release of the sulfur-containing substance, and accelerates the electron transfer and exchange current density in the nodule digestion. Under the optimal conditions, in the presence of A. ferrooxidans the final pregnant solution contained 0.86 g Ni/L, 56 mg Co/L, 0.62 g Cu/L, and 5.81 g Mn/L with the improvement of 5.1%, 4.1%, 5.9% and 4.9% referring to operation with sterile solution. The leaching rate of Ni, Cu, Co and Mn increases respectively by a factor of 0.17, 0.48, 0.10, and 0.093 in the A. ferrooxidans and Fe(III) medium relative to the Fe(III) alone, with a mean of 0.91, 0.70, 0.34 and 0.45 to the control.
Influence of Al4C3nanophase on structural stability and mechanical properties of Al-Al4C3composites after thermal exposure
Authors: Velgosová Oksana , Besterci Michal , Balloková Beata
Published: December 2018

The Al-Al4C3metal matrix composite (MMC) reinforced by Al4C3nanoparticles was produced by a powder metallurgy route. Well-dispersed coherent Al4C3phase was formed during the fabrication process, which guarantees good interface bonding and thus results in good mechanical properties. Yield strength (YS) for materials strengthened by 1 wt.% of C reached 275 MPa, ultimate tensile strength (UTS) 295 MPa and elongation (A) 14%, which means that this material can compete with Al matrix strengthened by comparable amount of carbon nanotubes (CNTs/Al). To analyse the thermal stability, the Al-Al4C3composite was exposed to a temperature of 250 °C, 500 °C and 620 °C for 5 hours with subsequent gradual furnace cooling to room temperature. The composite exhibits high structural stability (the subgrains size after thermal treatment at 250 °C was ∼0.82 μm and did not change to a temperature of 500 °C) with preserved mechanical properties up to 500 °C. After thermal exposing to 620 °C, the subgrains size increased, by almost twice the initial value (∼1.93 μm) and degradation of substructure was observed, but the material maintained good YS (∼220 MPa) and UTS (∼245 MPa) values. The structural and mechanical properties of the composite, even after thermal treatment, are significantly determined by the Al4C3phase created “in situ”. Thus, we suggest that Al-Al4C3composites might be a good alternative, depending on the application purpose, to CNTs/Al composites.
Magnetospheric access for solar protons during the January 2005 SEP event
Authors: Kalegaev Vladimir V. , Vlasova Natalia A. , Nazarkov Ilya S. , Melkova Sophia A.
Published: December 2018

The early phase of the extraordinary solar energetic particle 20 January, 2005 event having the highest peak flux of any SEP in the past 50 years of protons with energies > 100 MeV is studied. Solar energetic particles (>16 MeV) entry to the Earth’s magnetosphere on January 20, 2005 under northward interplanetary magnetic field conditions is considered based on multi-satellite data analysis and magnetic field simulation. Solar wind parameters and interplanetary magnetic field data, as well as calculations in terms of the A2000 magnetospheric magnetic field model were used to specify conditions in the Earth’s environment corresponding to solar proton event. It was shown that during the early phase of the event energetic particle penetration into the magnetosphere took place in the regions on the magnetopause where the magnetospheric and interplanetary magnetic field vectors are parallel. Complex analysis of the experimental data on particle fluxes in the interplanetary medium (data from ACE spacecraft) and on low-altitude (POES) and geosynchronous (GOES) orbits inside the Earth’s magnetosphere show two regions on the magnetopause responsible for particle access to the magnetosphere: the near equatorial day-side region and open field lines window at the high-latitude magnetospheric boundary. Calculations in terms of A2000 magnetospheric magnetic field model and comparison with SuperDARN images support the link between high-latitude solar energetic particle precipitations and the region at the magnetopause where the magnetospheric field is coupled with northward IMF, allowing solar particles entrance into the magnetosphere and access to the northern polar cap.
Circulating Tissue Inhibitor of Metalloproteinase-4 levels are not a Predictor of Preeclampsia in the period between 20 and 25 Weeks of Gestation
Authors: Sandrim Valeria Cristina , Machado Jackeline , Bettiol Heloisa , Barbieri Marco Antonio , Cardoso Viviane Cunha , Palei Ana Carolina , Cavalli Ricardo Carvalho
Published: December 2018

Objective To evaluate whether the circulating level of tissue inhibitor of metalloproteinase-4 (TIMP-4) in the period between 20 and 25 weeks of gestation is a predictor of preeclampsia.

Methods We have performed a case-control study, nested in a prospective study cohort in Ribeirão Preto, in the state of São Paulo, Brazil. Of the 1,400 pregnant women evaluated between 20 and 25 weeks of gestation, 460 delivered in hospitals outside of our institution. Of the 940 pregnant women who completed the protocol, 30 developed preeclampsia. Healthy pregnant women (controls, n = 90) were randomly selected from the remaining 910 participants. From blood samples collected between 20 and 25 weeks of gestation, we performed a screening of 55 angiogenesis-related proteins in 4 cases and 4 controls. The protein TIMP-4 was the most differentially expressed between cases and controls. Therefore, we measured this protein in all cases (n = 30) and controls selected (n = 90).

Results There were no differences in the plasma TIMP-4 levels of cases compared with controls (1,144 ± 263 versus 1,160 ± 362 pg/mL, respectively; p > 0.05).

Conclusion Plasma TIMP-4 levels were not altered at 20 to 25 weeks of gestation, before the manifestation of clinical symptoms; therefore, they are not good predictors of the development of preeclampsia.
Malignant Vascular Tumors of the Liver in Adults
Authors: Rimola Jordi , Alves Venancio
Published: December 2018

Hepatic angiosarcoma and epithelioid hemangioendothelioma (EHE) might be clinically considered a spectrum since, although more frequently presenting indolent behavior, EHE occasionally evolves to high-grade neoplasms. However, in most circumstances, pathological and immunohistochemical patterns define this differential diagnosis. More recently, molecular pathways for angiosarcoma and for EHE from other organs and from soft tissue have been proved different, paving the way for future morpho-molecular assessment of their hepatic counterpart. The frequency of liver involvement by Kaposi sarcoma in HIV-infected patients is lower nowadays. Histological findings and immunostaining for HHV-8 Ag are characteristic. Hepatic small vessel neoplasms have been recently recognized as important mimickers of angiosarcoma. The criteria for this differential diagnosis and the clinical behavior, up to now considered favorable, must be further studied.
Flexibilität als Marke
Authors: Fastenmeier Heribert
Published: December 2018

Das Klinikum Ingolstadt hat eines der flexibelsten Arbeitszeitmodelle. Es
ermöglicht Mitarbeitern mehr Selbstbestimmung und Patienten eine
bedarfsorientierte Versorgung.
Älter werden mit Konzept
Authors: Hug Josef
Published: December 2018

Dass man dem Personalmangel in der Pflege etwas entgegensetzen kann, macht das
Klinikum Karlsruhe vor. Pflegedirektor Josef Hug beschreibt, wie sich das
Projekt „Lebensphasengerechtes Arbeiten“ umsetzen lässt.
„Ja“ zur Generalistik mit Schwerpunktbildung
Authors: Bechtel Peter
Published: December 2018

Ausdiskutiert! Peter Bechtel, Vorsitzender im Bundesverband Pflegemanagement, ist die Diskussionen leid. Hier sein Plädoyer für eine gemeinsame
Krankenpflegeausbildung.
Recent origin and evolution of obesity-income correlation across the United States
Authors: Bentley R. Alexander , Ormerod Paul , Ruck Damian J.
Published: December 2018

From a gene-culture evolutionary perspective, the recent rise in obesity rates around the Developed world is unprecedented; perhaps the most rapid population-scale shift in human phenotype ever to occur. Focusing on the recent rise of obesity and diabetes in the United States, we consider the predictions of human behavioral ecology (HBE) versus the predictions of social learning (SL) of obesity through cultural traditions and/or peer–to–peer influence. To isolate differences that might discriminate these different models, we first explore temporal and geographic trends in the inverse correlation between household income and obesity and diabetes rates in the U.S. Whereas by 2015 these inverse correlations were strong, these correlations were non-existent as recently as 1990. The inverse correlations have evolved steadily over recent decades, and we present equations for their time evolution since 1990. We then explore evidence for a “social multiplier” effect at county scale over a ten-year period, as well as a social diffusion pattern at state scale over a 26–year period. We conclude that these patterns support HBE and SL as factors driving obesity, with HBE explaining ultimate causation. As a specific “ecological” driver for this human behavior, we speculate that refined sugar in processed foods may be a prime driver of increasing obesity and diabetes.
Ultra-wide bandgap amorphous oxide semiconductors for NBIS-free thin-film transistors
Authors: Kim Junghwan , Bang Joonho , Nakamura Nobuhiro , Hosono Hideo
Published: December 2018

The transparency of oxide semiconductors is a significant feature that enables the fabrication of fully transparent electronics. Unfortunately, practical transparent electronics using amorphous oxide semiconductors (AOSs) have not yet been realized, owing to significant photo-instabilities of these materials. Previous studies have revealed that the photo-instability can be attributed to sub-gap states (SGSs) near the valence-band maximum (VBM). Thus, it is inferred that the energy difference between the SGSs and the conduction-band minimum must be widened sufficiently in order to make it fully transparent over the entire visible-light region. In this work, we examined the electronic structures of a variety of AOSs and found that their ionization potentials vary greatly, depending upon the specific metal cations. This finding enabled us to increase the optical bandgap by modifying the VBM levels, resulting in a high mobility of 9 cm2/Vs and an ultra-wide bandgap of 3.8 eV for amorphous Zn–Ga–O (a-ZGO). We show that a-ZGO thin-film transistors exhibit no negative-bias illumination-stress instability with no passivation and no light-shielding layer.
Propulsion and assembly of remotely powered p-type silicon microparticles
Authors: Ohiri Ugonna , Han Koohee , Shields C. Wyatt , Velev Orlin D. , Jokerst Nan M.
Published: December 2018

In this letter, we discuss how to prepare millions of uniform p-type silicon (Si) microparticles using top-down fabrication processes and how to remotely control their dynamics when they are suspended in water and powered by external alternating current (AC) electric fields. These microparticles present positively charged carrier types (majority carriers from boron atom doping in the intrinsic Si) and negatively charged carrier types (minority carriers from the free electrons in the Si lattice), which electrostatically affects their negatively charged surfaces and enables a variety of programmable behaviors, such as directional assembly and propulsion. At high AC electric field frequencies ( f > 10 kHz), the microparticles assemble by attractive dielectrophoretic polarization forces. At low electric field frequencies ( f ≤ 10 kHz), the microparticles propel by induced-charge electrophoretic flows. The ability to manipulate the electrostatic potential distribution within and around the microparticles (i.e., by controlling electronic carrier types through doping) is useful for designing a number of new dynamic systems and devices with precise control over their behaviors.
Synergistic treatment of SF6 by dielectric barrier discharge/γ-Al2O3 catalysis
Authors: Zhang Xiaoxing , Zhang Guozhi , Wu Yongqian , Song Shaojian
Published: December 2018

SF6 dielectric barrier discharge (DBD) degradation technology has been a hot spot and difficult problem in environmental protection, because SF6 has very high global warming potential and long atmospheric lifetime. To further improve the destruction and removal efficiency and energy yield of SF6 by DBD, the effects of the synergetic degradation of SF6 by dielectric barrier discharge/γ-Al2O3 were studied under different gases and catalyst masses. Ar was the background gas in the reaction. The initial concentration of SF6 was 2%, and the feed gas was water vapor or oxygen. The experimental results showed the evident synergistic effect of a suitable amount of γ-Al2O3 catalyst and DBD plasma on SF6 removal when the water vapor or oxygen was applied. When the catalyst mass was 5 g, the energy density was 43.5 J/mL, and the feed gas was water vapor, the optimal destruction and removal efficiency of discharge catalytic synergistic system reached 90.13%. This value was 15.5% higher than that of individual DBD degradation. Moreover, the energy yield reached 14 g/kWh, which was approximately 21% higher than that without the catalyst.
The metal-insulator transition in ZrTe5 induced by temperature
Authors: Wang Wei , Zhang Xiaoqian , Zhao Yafei , Xu Huanfeng , Lu QiangSheng , Liu Chang , Hu Xiaoying , Edmond Turcu Ion Cristian , He Liang , Zou Wenqin , Xu Yongbing
Published: December 2018

The ZrTe5 is known as a high mobility thermoelectric material. In 2014, Weng et al. predicted theoretically that the monolayer ZrTe5 is also a 2D topological insulator. In early works, scientists were focused on the abnormal metal-insulator transition as the temperature decreases. However, the physics nature of this phenomenon is still under debate. Here we have explained this by temperature-induced swapping of the dominating carriers from holes to electrons, evidenced by magneto-transport and angle-resolved photoemission spectroscopy (ARPES) measurements on single crystal ZrTe5 samples. Both methods indicate that the Fermi level of ZrTe5 raises from the top of the valance band across the conduction band as the temperature decreases. This is also accompanied by changes of the lattice constants. Our first principle calculation suggests that the shift of the Fermi level comes from the band structure change caused by the temperature variation.
Synthesis of type-II based (1-x)Ba0.6(Ca1/2Sr1/2)0.4Ti0.5Fe0.5O3+(x)Ni0.40 Zn0.45Cu0.15Fe1.9Eu0.1O4 composites via standard solid state reaction method and investigation of multiferroic properties
Authors: Esha I. N. , Toma F. T. Z. , Al-Amin Md. , Khan M. N. I. , Maria Kazi Hanium
Published: December 2018

A series of multiferroic composites, (1-x)Ba0.6(Ca1/2Sr1/2)0.4Ti0.5Fe0.5O3+(x)Ni0.4Zn0.45 Cu0.15Fe1.9Eu0.1O4 ((1-x)BCSTFO+(x)NZCFEO) where x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 1.0 have been synthesized by standard double sintering ceramic method sintered for 3 hours at 1200°C in air. The X-ray diffraction patterns reveal that the multiferroics and the parent ceramic samples crystallize in simple cubic structure with a slightly distored lattice parameter. The X-ray and bulk density increase with the increasing ferrite content. Consequently, the porosity decreases indicating better crystallization. A decreasing trend in dielectric constant is observed while the relative quality factor (RQF) increases significantly with the increasing ferromagnetic NZCFEO. At the same time, M–H hysteresis loops reveal that ferromagnetic property enhances with the addition of Ni0.40Zn0.45Cu0.15Fe1.9Eu0.1O4 (NZCFEO). The highest values of coercive field ∼ 92 O and saturation magnetization ∼1.37 emu/g are observed for x = 10% and x = 50% compositions respectively. Additionally, the permeability enhances up-to x = 30% but decreases with further doping. The room temperature resistivity rises due to the decrease in hopping mechanism. The samples exhibit a decreasing trend for resistivity with the increase of temperature. The dopant concentration has also shown an impressive impact on the activation energy. As a result, the multiferroic properties of (1-x)BCSTFO+(x)NZCFEO have been significantly improved considering the measured magnetic and ferroelectric properties.