bluuebunny/crossref_metadata_2025 huggingface dataset:
A high-resolution probabilistic in vivo atlas of human subcortical brain nuclei
Authors: Pauli Wolfgang M. , Nili Amanda N. , Tyszka J. Michael
Published: April 2018

Recent advances in magnetic resonance imaging methods, including data acquisition, pre-processing and analysis, have benefited research on the contributions of subcortical brain nuclei to human cognition and behavior. At the same time, these developments have led to an increasing need for a high-resolution probabilisticin vivoanatomical atlas of subcortical nuclei. In order to address this need, we constructed high spatial resolution, three-dimensional templates, using high-accuracy diffeomorphic registration ofT1- andT2- weighted structural images from 168 typical adults between 22 and 35 years old. In these templates, many tissue boundaries are clearly visible, which would otherwise be impossible to delineate in data from individual studies. The resulting delineations of subcortical nuclei complement current histology-based atlases. We further created a companion library of software tools for atlas development, to offer an open and evolving resource for the creation of a crowd-sourcedin vivoprobabilistic anatomical atlas of the human brain.
Carboxymethyl-β-cyclodextrin functionalization of TiO2 doped with lanthanum: characterization and enhancement of photocatalytic activity
Authors: Lopes Colpani Gustavo , Zanetti Jessica Taísa , Cecchin Fabiele , Dal'Toé Adrieli , Fiori Márcio Antônio , Moreira Regina de Fátima Peralta Muniz , Soares Cíntia
Published: April 2018

This paper proposes a lanthanum-doping and carboxymethyl-β-cyclodextrin functionalization mechanism for TiO2 nanoparticles to increase the photocatalytic activity.
Coordinating influence of multilayer graphene and spherical SnAgCu for improving tribological properties of a 20CrMnTi material
Authors: Li Xiaoxue , Xu Jingli
Published: April 2018

In order to increase the service life and operational reliability of a 20CrMnTi-steel-based gearing system, the friction and wear behavior of 20CrMnTi needs to be further improved.
A three-dimensional transient mixed hybrid finite element model for superabsorbent polymers with strain-dependent permeability
Authors: Yu Cong , Malakpoor Kamyar , Huyghe Jacques M.
Published: April 2018

A hydrogel is a cross-linked polymer network with water as solvent. Industrially widely used superabsorbent polymers (SAP) are partially neutralized sodium polyacrylate hydrogels.
Nano-sized paramagnetic and fluorescent fluorinated carbon fiber with high NIR absorbance for cancer chemo-photothermal therapy
Authors: Gong Peiwei , Guo Lihua , Pang Minghui , Wang Dandan , Sun Lu , Tian Zhenzhen , Li Juanjuan , Zhang Yuanyuan , Liu Zhe
Published: April 2018

We report a novel strategy to synthesize nano-sized, water-soluble and functionalized fluorinated carbon fiber oxide with high fluorescence, paramagnetism and NIR absorption for cancer chemo-photothermal therapy.
The role of ionic liquids in the biocatalytic evaluation of bisphenol levels as contaminant: an automatic approach
Authors: Costa Ana Raquel , Passos Marieta L. C. , Pinto Paula C. A. G. , Pereira Sarah A. P. , Saraiva M. Lúcia M. F. S.
Published: April 2018

Automation of peroxidase activity evaluation and bisphenol A quantification in ionic liquids medium.
Polyethylene glycol and octa-arginine dual-functionalized nanographene oxide: an optimization for efficient nucleic acid delivery
Authors: Imani Rana , Prakash Satya , Vali Hojatollah , Faghihi Shahab
Published: April 2018

The successful application of nucleic acid-based therapy for the treatment of various cancers is largely dependent on a safe and efficient delivery system.
Highly penetrative liposome nanomedicine generated by a biomimetic strategy for enhanced cancer chemotherapy
Authors: Jia Yali , Sheng Zonghai , Hu Dehong , Yan Fei , Zhu Mingting , Gao Guanhui , Wang Pan , Liu Xin , Wang Xiaobing , Zheng Hairong
Published: April 2018

Biomimetic liposome nanomedicine with deep tumor penetration and specific homotypic targeting ability enhanced cancer chemotherapy.
Injectable shear-thinning hydrogels for delivering osteogenic and angiogenic cells and growth factors
Authors: Alarçin Emine , Lee Tae Yong , Karuthedom Sobha , Mohammadi Marzieh , Brennan Meadhbh A. , Lee Dong Hoon , Marrella Alessandra , Zhang Jin , Syla Denata , Zhang Yu Shrike , Khademhosseini Ali , Jang Hae Lin
Published: April 2018

We developed an injectable osteogenic hydrogel that can deliver osteogenic cells and endothelial cells and growth factors.
Anti-Stokes fluorescence microscopy using direct and indirect dark state formation
Authors: Krause Stefan , Carro-Temboury Miguel R. , Cerretani Cecilia , Vosch Tom
Published: April 2018

Optically activated delayed fluorescence and upconversion fluorescence allow removing unwanted auto-fluorescence.
Negishi coupling reactions with [11C]CH3I: a versatile method for efficient 11C–C bond formation
Authors: Rejc Luka , Gómez-Vallejo Vanessa , Alcázar Jesús , Alonso Nerea , Andrés José Ignacio , Arrieta Ana , Cossío Fernando P. , Llop Jordi
Published: April 2018

11C–C bonds can be rapidly formed by one-pot Negishi coupling between in situ-formed [11C]CH3ZnI and halides or triflates.
Photophysical characterization of a highly luminescent divalent-europium-containing azacryptate
Authors: Jenks Tyler C. , Bailey Matthew D. , Corbin Brooke A. , Kuda-Wedagedara Akhila N. W. , Martin Philip D. , Schlegel H. Bernhard , Rabuffetti Federico A. , Allen Matthew J.
Published: April 2018

Modulation of the coordination environment of europium(ii)-containing complexes alters the bright and visible luminescence arising from f–d transitions.
Dimerization of boryl- and amino-substituted acetylenes by B2C2 four-membered ring formation
Authors: Kitamura Ryo , Suzuki Katsunori , Yamashita Makoto
Published: April 2018

Boryl- and amino-substituted acetylenes bearing diphenylboryl or 9-borabicyclononyl groups were synthesized.
Expanding the limit of Pd-catalyzed decarboxylative benzylations
Authors: Kong Duanyang , Moon Patrick J. , Qian Wenyu , Lundgren Rylan J.
Published: April 2018

The Pd-catalyzed decarboxylative benzylation of aryl bromides using a diverse range of electron-deficient aryl acetates is reported.
Pd-Catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones
Authors: Khan Ijaz , Zhao Can , Zhang Yong Jian
Published: April 2018

An efficient method for the construction of furanobenzodihydropyran skeletons has been developed through Pd-catalyzed asymmetric decarboxylative cycloaddition of vinylethylene carbonates with 3-cyanochromones.
Accurate prediction of the structure and vibrational spectra of ionic liquid clusters with the generalized energy-based fragmentation approach: critical role of ion-pair-based fragmentation
Authors: Li Yunzhi , Yuan Dandan , Wang Qingchun , Li Wei , Li Shuhua
Published: April 2018

The GEBF method with the ion-pair-based fragmentation has been developed to facilitate ab initio calculations of general ionic liquid clusters.
The influence of the sample dispersion on a solid surface in the thermal spin transition of [Fe(pz)Pt(CN)4] nanoparticles
Authors: Delgado Teresa , Enachescu Cristian , Tissot Antoine , Guénée Laure , Hauser Andreas , Besnard Céline
Published: April 2018

The dispersion on a Sapphire surface of [Fe(pz)Pt(CN)4], pz = pyrazine nanoparticles influences the thermal spin transition, as shown using magnetic, spectroscopic and diffraction data. This is explained within the framework of the mechanoelastic model.
Conformationally-restricted bicarbazoles with phenylene bridges displaying deep-blue emission and high triplet energies: systematic structure–property relationships
Authors: Wright Iain A. , Al-Attar Hameed A. , Batsanov Andrei S. , Monkman Andrew P. , Bryce Martin R.
Published: April 2018

Twelve bicarbazole derivatives with emission ranging from blue-green to deep-blue, and ET 2.6–3.0 eV.
Capturing the effect of [PF3(C2F5)3]−vs.[PF6]−, flexible anionvs.rigid, and scaled chargevs.unit on the transport properties of [bmim]+-based ionic liquids: a comparative MD study
Authors: Kowsari Mohammad H. , Ebrahimi Soraya
Published: April 2018

Effect of [PF3(C2F5)3]−vs.[PF6]−, flexible anionvs.rigid, and scaled chargevs.unit on the transport properties of ILs.
Atomistic modeling of La3+ doping segregation effect on nanocrystalline yttria-stabilized zirconia
Authors: Zhang Shenli , Sha Haoyan , Castro Ricardo H. R. , Faller Roland
Published: April 2018

The effect of La3+ doping on the structure and ionic conductivity change in nanocrystalline yttria-stabilized zirconia (YSZ) was studied using a combination of Monte Carlo and molecular dynamics simulations.
TEOA-induced in situ formation of wurtzite and zinc-blende CdS heterostructures as a highly active and long-lasting photocatalyst for converting CO2 into solar fuel
Authors: Chai Yao , Lu Jiaxue , Li Li , Li Deli , Li Meng , Liang Jun
Published: April 2018

Herein, the wurtzite and zinc-blende CdS heterostructures were designed and in situ synthesized by tuning triethanolamine (TEOA) usage amount under a mild hydrothermal condition.
Exceptionally stable Rh-based molecular catalyst heterogenized on a cationically charged covalent triazine framework support for efficient methanol carbonylation
Authors: Park Kwangho , Lim Sangyup , Baik Joon Hyun , Kim Honggon , Jung Kwang-Deog , Yoon Sungho
Published: April 2018

Direct carbonylation of methanol into methyl acetate and acetic acid using Rh-based heterogeneous catalysts is of great interest due to their effective levels of activity and stability.
High repeatability from 3D experimental platform for quantitative analysis of cellular branch pattern formations
Authors: Hagiwara Masaya , Nobata Rina , Kawahara Tomohiro
Published: April 2018

The platform provides high repeatable experimental results as well as large scale imaging by employing gel cube device.
Surface immobilization of biotin-DNA conjugates on polystyrene beads via SPAAC for biological interaction and cancer theranostic applications
Authors: Bharathi M. Vijaya , De Sourav , Lavanya T. , Maiti Santanu , Sarkar Bidisha , Ashok Kumar S. K. , Paira Priyankar
Published: April 2018

Here, surface immobilization of DNA conjugates via SPAAC for cancer theranostic applications was reported.
Sticky-flares for in situ monitoring of human telomerase RNA in living cells
Authors: Wu Qilong , Liu Zhengjie , Su Lei , Han Guangmei , Liu Renyong , Zhao Jun , Zhao Tingting , Jiang Changlong , Zhang Zhongping
Published: April 2018

A novel DNA-conjugated AuNP probe termed sticky-flares has been designed for the in situ detection of intracellular human telomerase RNA.
Remarkable long-term stability of nanoconfined metal–halide perovskite crystals against degradation and polymorph transitions
Authors: Kong Xiaoqing , Shayan Kamran , Lee Sangchul , Ribeiro Christian , Strauf Stefan , Lee Stephanie S.
Published: April 2018

MAPbI3stability is dramatically improved under nanoconfinement, accompanied by a suppression of polymorph transitions that are detrimental to optoelectronic performance.
Chemoenzymatic synthesis of polypeptides consisting of periodic di- and tri-peptide motifs similar to elastin
Authors: Gudeangadi Prashant G. , Tsuchiya Kousuke , Sakai Takamasa , Numata Keiji
Published: April 2018

Elastin-like polypeptides containing proline were synthesized via chemoenzymatic polymerization and exhibited a temperature-dependent structural transition.
Polymerization based on alternating insertion of an isocyanide and alkyne into palladium–carbon bonds
Authors: Kataoka Yuki , Kanbayashi Naoya , Okamura Taka-aki , Onitsuka Kiyotaka
Published: April 2018

The first polymerization system based on the alternating insertion of an isocyanide and alkyne into palladium–carbon bonds has been developed.
Efficient removal of U(vi) from simulated seawater with hyperbranched polyethylenimine (HPEI) covalently modified SiO2 coated magnetic microspheres
Authors: Li Wenting , Liu Qi , Chen Rongrong , Yu Jing , Zhang Hongsen , Liu Jingyuan , Li Rumin , Zhang Milin , Liu Peili , Wang Jun
Published: April 2018

Hyperbranched polyethylenimine (HPEI) covalently modified SiO2 coated magnetic microspheres were prepared for the efficient U(vi) removal from simulated seawater.
Characterization of aluminum, aluminum oxide and titanium dioxide nanomaterials using a combination of methods for particle surface and size analysis
Authors: Krause B. , Meyer T. , Sieg H. , Kästner C. , Reichardt P. , Tentschert J. , Jungnickel H. , Estrela-Lopis I. , Burel A. , Chevance S. , Gauffre F. , Jalili P. , Meijer J. , Böhmert L. , Braeuning A. , Thünemann A. F. , Emmerling F. , Fessard V. , Laux P. , Lampen A. , Luch A.
Published: April 2018

The application of appropriate analytical techniques is essential for nanomaterial (NM) characterization.
Transcriptomic analysis of thermotolerant yeastKluyveromyces marxianusin multiple inhibitors tolerance
Authors: Wang Dongmei , Wu Dan , Yang Xiaoxue , Hong Jiong
Published: April 2018

Global transcriptional response ofK. marxianusto multiple inhibitors including acetic acid, phenols, furfural and HMF at 42 °C.
Insights into the molecular mechanism underlying CD4-dependency and neutralization sensitivity of HIV-1: a comparative molecular dynamics study on gp120s from isolates with different phenotypes
Authors: Li Yi , Deng Lei , Ai Shi-Meng , Sang Peng , Yang Jing , Xia Yuan-Lin , Zhang Zhi-Bi , Fu Yun-Xin , Liu Shu-Qun
Published: April 2018

The envelope (Env) of HIV-1 plays critical roles in viral infection and immune evasion.
The effect of heat treatment on the anatase–rutile phase transformation and photocatalytic activity of Sn-doped TiO2 nanomaterials
Authors: Zhu Xiaodong , Han Shihu , Feng Wei , Kong Qingquan , Dong Zhihong , Wang Chenxi , Lei Jiahao , Yi Qian
Published: April 2018

Sn incorporation into TiO2 lattices promotes anatase/rutile transformation and Sn–TiO2 exhibits better photocatalytic activity at different temperatures.
Potent and selective inhibition of matrix metalloproteinases by lanthanide trichloride
Authors: Wang Yanyan , Wang Ye , An Song , Zhang Jinrui , Han Yuqian , Xu Jinge , Yu Fang , Yu Dahai , Fang Xuexun
Published: April 2018

The specific inhibition of EuCl3 on MT1-MMP and it inhibits on HT-1080 cell migration in a dose-dependent manner.
Near infrared dye loaded copper sulfide-apoferritin for tumor imaging and photothermal therapy
Authors: He Yuanyuan , Shen Yuanzhi , Zhou Siqi , Wu Yihui , Yuan Zhenwei , Wei Chen , Gui Lijuan , Chen Yisha , Gu Yueqing , Chen Haiyan
Published: April 2018

Development of photothermal agents for imaging-guided photothermal therapy (PTT) has been of great interest in the field of nanomedicine.
Molecularly imprinted ‘traps’ for sulfonylureas prepared using polymerisable ion pairs
Authors: Pessagno Federica , Hasanah Aliya Nur , Manesiotis Panagiotis
Published: April 2018

Polymerisable ion pair captures both neutral and anionic form of acidic sulfonylurea drug in stoichiometrically imprinted polymer.
Ag–K/MnO2 nanorods as highly efficient catalysts for formaldehyde oxidation at low temperature
Authors: Lu Suhong , Wang Xue , Zhu Qinyu , Chen Canchang , Zhou Xuefeng , Huang Fenglin , Li Kelun , He Lulu , Liu Yanxiong , Pang Fanjue
Published: April 2018

Ag–K/MnO2 nanorods with appropriate K/Ag ratio demonstrated excellent catalytic activity for complete oxidation of formaldehyde.
One-pot, sequential four-component synthesis of novel heterocyclic [3.3.3] propellane derivatives at room temperature
Authors: Beyrati Maryam , Hasaninejad Alireza
Published: April 2018

An efficient synthesis of propellane derivatives is described by the condensation reaction between acenaphthenequinone, malono derivatives, primary amines and β-ketoesters or β-diketones in the presence of triethylamine in ethanol at room temperature.
Structural elucidation of NASICON (Na3Al2P3O12) based glass electrolyte materials: effective influence of boron and gallium
Authors: Allu Amarnath R. , Balaji Sathravada , Illath Kavya , Hareendran Chaithanya , Ajithkumar T. G. , Biswas Kaushik , Annapurna K.
Published: April 2018

Understanding the conductivity variations induced by compositional changes in sodium super ionic conducting (NASICON) glass materials is highly relevant for applications such as solid electrolytes for sodium (Na) ion batteries.
Crystal structure and luminescence properties of a novel single-phase orange-red emitting phosphor Ca9La (PO4)7:Sm3+
Authors: Ma Bin , Ma Xiaoqin , Xu Tonghui , Su Ke , Zhang Qianxin
Published: April 2018

Ca9La1–x(PO4)7:xSm3+ phosphors (0.01 < x < 0.25) were successfully synthesized. Crystal structure and luminescence properties of the phosphors were discussed in detail.
Recent progress in biochar-supported photocatalysts: synthesis, role of biochar, and applications
Authors: Mian Md Manik , Liu Guijian
Published: April 2018

Incorporating photocatalytic nanoparticles with biochar templates can produce biochar-supported photocatalysts (BSPs) and combine the advantages of biochar with catalytic nanoparticles.
Substituted spirooxindole derivatives as potent anticancer agents through inhibition of phosphodiesterase 1
Authors: Barakat Assem , Islam Mohammad Shahidul , Ghawas Hussien Mansur , Al-Majid Abdullah Mohammed , El-Senduny Fardous F. , Badria Farid A. , Elshaier Yaseen A. M. M. , Ghabbour Hazem A.
Published: April 2018

Spirooxindole is a promising chemo therapeutic agent. Possible targets include cancers of the liver, prostate, lung, stomach, colon, and breast.
Transfer hydrogenation of aldehydes catalyzed by silyl hydrido iron complexes bearing a [PSiP] pincer ligand
Authors: Zhang Peng , Li Xiaoyan , Qi Xinghao , Sun Hongjian , Fuhr Olaf , Fenske Dieter
Published: April 2018

The synthesis and characterization of a series of silyl hydrido iron complexes bearing a [PSiP] pincer ligand were reported. These complexes showed good to excellent catalytic activity for transfer hydrogenation of aldehydes under mild conditions.
An iridium(iii/iv/v) redox series featuring a terminal imido complex with triplet ground state
Authors: Kinauer Markus , Diefenbach Martin , Bamberger Heiko , Demeshko Serhiy , Reijerse Edward J. , Volkmann Christian , Würtele Christian , van Slageren Joris , de Bruin Bas , Holthausen Max C. , Schneider Sven
Published: April 2018

An iridium(iii–v) imido series has been isolated that features an iridium complex with an unprecedented triplet ground state.
Improving the stability and decreasing the trap state density of mixed-cation perovskite solar cells through compositional engineering
Authors: Poorkazem Kianoosh , Kelly Timothy L.
Published: April 2018

In order to become a commercially viable technology, perovskite solar cells will require both high efficiencies and long-term stability.
Construction of amorphous interface in an interwoven NiS/NiS2 structure for enhanced overall water splitting
Authors: Li Qun , Wang Dewen , Han Ce , Ma Xiao , Lu Qingqing , Xing Zhicai , Yang Xiurong
Published: April 2018

Here, we describe the synthesis of a novel interwoven NiS/NiS2 structure with an amorphous interface accomplished by carrying out a one-step thermal decomposition of nickel sulfate and thiourea.
The effect of polymer molecular weight on the performance of PTB7-Th:O-IDTBR non-fullerene organic solar cells
Authors: Hoefler Sebastian F. , Rath Thomas , Pastukhova Nadiia , Pavlica Egon , Scheunemann Dorothea , Wilken Sebastian , Kunert Birgit , Resel Roland , Hobisch Mathias , Xiao Steven , Bratina Gvido , Trimmel Gregor
Published: April 2018

Activation energy for charge transport, carrier concentration and recombination rate are identified to strongly affect the device characteristics.
Ring closure of polynitroazoles via an N,N′-alkylene bridge: towards high thermally stable energetic compounds
Authors: Tang Yongxing , He Chunlin , Imler Gregory H. , Parrish Damon A. , Shreeve Jean'ne M.
Published: April 2018

A straightforward ring closure reaction gave highly thermally stable tricyclic N,N′-alkylene bridged polynitrobis-azoles.
An ultrathin flexible electronic device based on the tunneling effect: a flexible ferroelectric tunnel junction
Authors: Hou Pengfei , Yang KaiXin , Ni Kaikai , Wang Jinbin , Zhong Xiangli , Liao Min , Zheng Shuaizhi
Published: April 2018

An ultrathin flexible electronic device based on the tunneling effect: a flexible ferroelectric tunnel junction.
AACVD and gas sensing properties of nickel oxide nanoparticle decorated tungsten oxide nanowires
Authors: Navarrete Eric , Bittencourt Carla , Umek Polona , Llobet Eduard
Published: April 2018

Here, we show that the aerosol assisted chemical vapor deposition process is suitable for growing single crystalline tungsten oxide nanowires loaded with nickel oxide nanoparticles.
The dual role of Cr3+ in trapping holes and electrons in lanthanide co-doped GdAlO3 and LaAlO3
Authors: Luo Hongde , Dorenbos Pieter
Published: April 2018

We have obtained a consistent interpretation of the TL and photoluminescence excitation spectra of Cr3+ doped and Ln3+ co-doped GdAlO3 and LaAlO3.
Design of optimised logic interface for network‐on‐chip architectures
Authors: Sakthivel E. , Arunraja M. , Uma K.D. , Shanthi T. , Muthukrishnan A.
Published: April 2018

Achievement of low power consumption in the field of network‐on‐chip (NoC) is a prominent research in recent days. Many works have attempted to improve performance in NoC using architectural and algorithmic models. The researches attempted to mitigate certain factors like power consumption, speed, complexity, scalability, and flexibility. Currently, NoC engineers incorporated external or internal sense amplifier (SA) in the architectural model of NoC. In the conventional double‐tail SAs (DTSAs), more amount of energy is consumed in the heavy traffic state. Hence, many improved DTSAs like reconfigurable DTSA (R‐DTSA), variable energy aware SA link for asynchronous NoC (VELAN) DTSA (V‐DTSA) were proposed in the previous works and employed with the transceivers. They were evaluated on TSMC 90 nm technology with the real‐time data traffics which are obtained using traffic estimators and traffic generators. An optimised logic interface for transceivers of NoC which is superior to the conventional DTSA, R‐DTSA, and V‐DTSA is developed. The proposed design is implemented with transceivers and evaluated on TSMC 90 nm technology for comparing the performance with the previous SAs.
ASCRL evaluation with parametrically constrained covariance matrix
Authors: Tan Jie , Wang Yikai , He Zishu , Sun Guohao
Published: April 2018

In this Letter, the authors propose an approach to evaluate the average signal‐to‐clutter ratio loss (ASCRL) of an adaptive radar filter with a parametrically constrained clutter covariance matrix (CCM). The approach is a two‐step strategy, the constrained Cramér–Rao bound of the CCM estimate is first derived, and then it is used to derive the ASCRL. More specifically, the ASCRL of an adaptive filter with a trace constrained CCM is derived. Simulation results show that our approach performs well in evaluating the trace constrained ASCRL for both complex Gaussian clutter and compound‐Gaussian clutter.
Wideband low‐profile CPW‐fed slot‐loop antenna using an artificial magnetic conductor
Authors: Li Xin , Jiao Yong‐Chang , Zhang Li
Published: April 2018

A wideband low‐profile slot‐loop antenna is proposed based on an artificial magnetic conductor (AMC) reflector which is applied to a slot‐loop antenna to obtain directional radiation patterns. Compared with an antenna using a metal reflector, the AMC reflector can reduce the profile of the antenna and enhance operating bandwidth. The AMC consists of 4 × 6 patches with ring slots and slits. A coplanar waveguide is introduced to the proposed slot‐loop antenna so that the antenna can directly attach to the AMC surface. Thus, a low profile of 0.05λL is realised (λL is the wavelength at the lowest operating frequency). Simulation and experimental results indicate that the proposed antenna obtained a 37.9% impedance bandwidth, a 36.7% 3‐dB gain bandwidth, and a 6.85 dBi peak gain.
Role of MRI coils in radio frequency heating of implantable medical devices
Authors: Ding Jianqi , Jiang Changqing , Zhang Feng , Li Linze , Liu Yinghua , Li Luming
Published: April 2018

MRI for patients with implanted medical devices is usually restricted due to the heating hazard arising from the interaction between the device and the electromagnetic field generated by the RF coil. RF coils used clinically have diverse dimensions and their heating effect remains unexamined. By numerical simulation, the similarity of the phantom magnetic field distribution of various coils was characterised by regression, and the heating around a standard implant was examined by correlation analysis. It was shown that the magnetic field distributions in the phantom were similar (>0.95) in the central area. This similarity was more significantly affected by the coil length rather than the diameter. As for the RF heating, the temperature distributions at the implant tips were much more similar (>0.9999) across all the coils. Although there were some differences in the temperature rise per unit RF magnetic field, these differences were within 20%, especially in the central region. These data reveal the influence of coil dimensions on the RF heating.
0.5–4.4 Gbit/s PAM4/NRZ dual‐mode transceiver with 0.6 V near‐ground NMOS driver for low‐power memory interface
Authors: Min K. , Oh T.
Published: April 2018

An efficient dual‐mode input and output transceiver scheme is proposed. The transceiver can achieve the data speed from 0.5 up to 4.4 Gbit/s with 0.6 V supply voltage and can support the near‐ground mode for low‐power memory interface application. The transceiver can transmit both PAM4/NRZ signals flexibly depending on the channel loss conditions. The prototype bi‐directional two‐channel transceiver is implemented in 45 nm CMOS process and occupies 0.0516 mm2 chip area. The IP shows power consumption of 2.24/2.78 mW during 4.4 Gbit/s PAM4/NRZ mode operation, each, respectively.
Outage probability of multi‐hop networks with amplify‐and‐forward full‐duplex relaying
Authors: Sureshbabu Abhilash , Samavat Mohammad , Li Xiaofeng , Tepedelenlioğlu Cihan
Published: April 2018

The authors consider a multi‐hop amplify‐and‐forward full‐duplex relay system. They take a signal flow graph approach for finding the input–output relationship using Mason's gain formula, and use this expression to compute the system outage probability for different equalisers. For sufficiently large target rates, full‐duplex relaying with equalisers has lower outage probability than half‐duplex relaying, despite the higher residual self‐interference (RSI) of the full‐duplex approach. The full‐duplex system with (unequalised) matched filter at the destination is seen to be sensitive to RSI which shows that equalisation at the destination is a feasible approach to combating the RSI for full‐duplex multi‐hop systems.
LTE‐Advanced network inter‐cell interference analysis and mitigation using 3D analogue beamforming
Authors: Ameen Araz Sabir , Berraki Djamal , Doufexi Angela , Nix Andrew R.
Published: April 2018

This study considers the effects of inter‐cell interference (ICI) on the LTE‐Advanced physical layer downlink channel for different macro‐cell diameters and base station (BS) antenna heights with a frequency reuse factor of one and three sectors per site. A site‐specific three‐dimensional (3D) ray‐tracing tool is used to model the communication channel between the BSs (main and interfering links) and user equipment (UE) terminals. System performance is evaluated in terms of average spectrum efficiency, cell edge throughput and outage probability. Two 3D analogue beamforming algorithms are proposed to mitigate the harmful effects of ICI. These are applied at the BS and/or the UE and compared with a more traditional fractional frequency reuse deployment. Simulations demonstrate that the proposed beamforming algorithms provide significant system level improvements, especially for low BS antenna heights. With 10 × 10 and 2 × 2 antenna arrays at the BS and the UE, respectively, the proposed MaxMin‐BF algorithms can provide an average spectrum efficiency of 3.6 bps/Hz and a cell edge throughput of 0.56 bps/Hz up to a cell diameter of 1250 m. Importantly, these results satisfy the IMT‐Advanced requirements for candidate fourth generation and beyond radio interface technologies. Furthermore, the performance of proposed beamforming algorithms outperforms those achieved using fractional frequency reuse.
New beamforming and space‐time coding for two‐path successive decode and forward relaying
Authors: Shirzadian Gilan Mahsa , Olfat Ali
Published: April 2018

Successive relaying is a bandwidth‐efficient scheme in cooperative networks. In this study, a novel distributed space‐time coding (DSTC) transmission scheme for a two‐path successive relay network is proposed that enjoys threshold‐based selection relaying protocol. A new beamforming method is also employed alongside the proposed DSTC transmission scheme. Three scenarios are considered in this study. In the first scenario, single‐input–single‐output (SISO) relays are considered. In the second and third scenarios, multiple‐input–multiple‐output (MIMO) relays are used, but in the second case a transmission scheme named as quasi‐DSTC scheme alongside employing space‐time coding at each relay is proposed. A closed‐form expression for the end‐to‐end bit error rate (BER) of the system is derived and it is shown that regardless of the fading in inter‐relay channel, the proposed scheme achieves full diversity order even when there are decoding errors at the relay nodes. Simulation results show a significant saving in power of about 2.5, 3, and 4 dB at BER compared with other conventional methods in the case of using SISO relays, MIMO relays in the second and third scenarios, respectively.
Hybrid synchronous generator output voltage control with energy storage
Authors: Bensmaine Faycal , Tnani Slim , Champenois Gérard , Bachelier Olivier , Mouni Emile
Published: April 2018

The authors present the study and control of a new concept of hybrid generator in order to improve the behaviour of a synchronous generator during transients. The solution adopted is to place an energy storage system in parallel with the synchronous generator. The storage system consists of an inverter with a supercapacitor on the DC bus. A control law with a best compromise between energy exchanged in the supercapacitor and group speed efficiency has been developed and presented. To achieve that, a feedback control with integration of the deviation using a linear matrix inequalities approach has been used for current loop synthesis of the regulators. A second control law was developed to regulate the variable voltage across the supercapacitor. All validations were made on an experimental test rig. Experimental tests highlighted the significant contribution of this hybridisation to the motor speed variations and to the terminal voltage of the generator during impact or load shedding.
Nine‐phase IM for hybridisation of a compact vehicle by parallel TTR architecture
Authors: Silva Rafael Á. , Pujatti Fabrício J.P. , Pires Igor A.
Published: April 2018

This study investigates the usage of a nine‐phase induction motor (IM) in internal combustion engine vehicle hybridisation. Aiming to minimise structural changes, the parallel‐through‐the‐road (TTR) hybrid architecture was chosen. First, a real vehicle was experimented on the mobility technology centre Federal University of Minas Gerais (CTM‐Universidade Federal de Minas Gerais (UFMG) laboratory) to get its characteristics. After that, this technical information was used to model and simulate on the software advanced vehicle simulator (ADVISOR). The simulated model results were compared with the experimental tests results realised with the vehicle on the tests track and CTM‐UFMG. Posteriorly, through a validated vehicle model, a drivetrain powered by a prototype of a nine‐phase IM was integrated into the rear axle to do the hybridisation process simulation. To do that some structures modifications were necessary on ADVISOR since this tool does not include the parallel‐TTR architecture. Vehicles modelled were simulated using the urban driving dynamometer schedules. Finally, the comparative analyses of simulation results show the improvements in fuel consumption, vehicle efficiency, emission gas, and the nine‐phase motor operation in a hybrid TTR.
Multi‐band bisected Hilbert monopole antenna loaded with multiple subwavelength split‐ring resonators
Authors: Goswami Chiranjib , Ghatak Rowdra , Poddar Dipak R.
Published: April 2018

Here, a simple yet effective design methodology to design multi‐band planar antenna is proposed. The monopole antenna structure is realised using a bisected fractal Hilbert curve. Two subwavelength split‐ring resonators (SRRs), where one is a Moore shaped fractal SRR, operates at 3.5 GHz, and the other conventional one operates at 5.2 GHz, are placed in proximity to the compact monopole to achieve two additional operating bands apart from the two resonant frequencies of the fractal‐shaped monopole. The third and fourth bands are merged to obtain wide impedance bandwidth around 5.5 GHz. The proposed antenna displays tri‐band resonance that covers 2.4 GHz WLAN band, 3.5 GHz Wi‐MAX band, and the wide band ranges from 5.0 to 6.15 GHz. Stable monopole‐like pattern over all the bands is observed. The overall antenna dimension is 33 × 20 × 0.787 mm3. A fabricated prototype is developed that exhibits good agreement between the measurement and simulation results.
Estimation of solar radiation on PV panel surface with optimum tilt angle using vortex search algorithm
Authors: Ramli Makbul A.M. , Bouchekara Houssem R.E.H.
Published: April 2018

The amount of solar energy incidence on a photovoltaic (PV) panel depends on the PV tilt angles with respect to the horizon. It is thus crucial to investigate the optimum tilt angles to maximise the efficiency of PV panels and at the same time to increase the performance of solar energy systems. The objective of this study is to estimate the optimum tilt angle for PV panels in order to collect the maximum solar radiation for the city of Dhahran in Saudi Arabia. A newly developed optimisation algorithm called the vortex search algorithm is used to estimate the solar radiation on the tilted surface. Moreover, one year can be divided into different periods in the proposed approach, and the optimum angle can be obtained for each one of these periods separately. The horizontal solar data (i.e. direct, diffuse and global solar radiation) is used to estimate the optimum tilt angle. The results demonstrate that the solar radiation estimated using the optimum tilt angle is maximised compared with the one estimated on a horizontal surface.
Specific ship detection for electronic reconnaissance data based on clustering and NNs
Authors: Chen Wenbin , Xu Guangluan , Ren Wenjuan , Huang Tinglei
Published: April 2018

Ship detection is an important issue in both civil and military fields. There are many researches about ship detection in wide sea areas and inshore areas. Most of these researches use the image dataset. In this research, a novel framework for specific ship detection using the electronic reconnaissance dataset is proposed. In the new framework, the clustering methods based on time and trajectory are used to process the dataset. Then, several machine‐learning methods are used to build detection models. The long short‐term memory models are used to extract time‐series features and the carefully designed one‐dimensional (1D) convolution neural networks (CNNs) are introduced to extract local features. Experimental results on a large electronic reconnaissance dataset collected from real scenario show the model based on 1D CNN gets better performance than classic detection models and the authors’ system achieves a good detection accuracy of 92.5%. Above all, this research is a very valuable exploration for the detection of specific ship based on electronic reconnaissance dataset.
Time‐domain analysis of extended composite right/left handed transmission line excited by modulated signal using unconditionally stable FDTD algorithm
Authors: Afrooz Kambiz
Published: April 2018

In this study, the extended composite right/left handed (ECRLH) transmission line equations are solved by an unconditionally stable finite‐difference time‐domain algorithm. The results of the proposed algorithm are verified by the conventional one. Amplification matrix of the unconditionally stable algorithm is extracted. The results show that the spectral radius of the amplification matrix of the proposed algorithm is less than one and the proposed algorithm is unconditionally stable. To overcome the numerical dispersion, the complex phasor method is applied to the ECRLH equations. The new equations are solved by the proposed algorithm and results confirm the accuracy of the new equations. By using the complex phasor method and proposed algorithm, the CPU time is reduced about 98%, which shows the efficiency of the proposed method.
Performance of different kernel functions for LS‐SVM‐GWO to estimate flashover voltage of polluted insulators
Authors: Bessedik Sid Ahmed , Djekidel Rabah , Ameur Aissa
Published: April 2018

This work attempts to clarify the potentials of hybrid model based on least‐squares support vector machine (LS‐SVM) and a novel meta‐heuristic algorithm called Grey Wolf optimiser (GWO) in high‐voltage applications, considering several kernel functions. The selection of the suitable kernel function and its parameters play an important role in the performance of LS‐SVM. For this purpose, GWO is proposed in this study as an efficient optimisation approach to adjust the parameters of various kernel functions such as linear kernel (Lin), radial basis function kernel, polynomial kernel (poly) and multi‐layer perceptron kernel. Afterwards, the LS‐SVM with the most appropriate kernel function is designed to model flashover voltage of polluted high‐voltage insulators. The performance of the developed model is compared with the previous works. The results confirm high capabilities of the proposed hybrid model for the prediction of the flashover voltage of polluted insulators.
Fault location on a series‐compensated three‐terminal transmission line using deep neural networks
Authors: Mirzaei Mahdi , Vahidi Behrooz , Hosseinian Seyed Hossein
Published: April 2018

In this study, discrete wavelet transform (DWT) and deep neural network (DNN) are utilised for fault location in a series‐compensated three‐terminal transmission line. The series compensation causes challenges in fault location schemes of the three‐terminal transmission lines. The presented fault location method has been extensively tested using the SIMULINK model of a three‐terminal transmission line. Features extracted from synchronous measurements of fault currents at the three terminals using DWT are fed to the DNN. Faulted section determination and fault distance calculation are carried out using a single intelligent network simultaneously. Faulted section is determined with 100% accuracy, and the efficiency of algorithm is validated for symmetrical and unsymmetrical faults, and different values of fault resistance, inception angle, and location. The accuracy of the algorithm is acceptable for large fault resistances (above 100 Ω) and fault inception angles near zero. Total mean error for test data is 0.0458% which is much improved with respect to other similar works.
Variational approximation of size-mass energies fork-dimensional currents
Authors: Chambolle Antonin , Ferrari Luca A.D. , Merlet Benoit
Published: April 2018

In this paper we produce a Γ-convergence result for a class of energiesFε,akmodeled on the Ambrosio-Tortorelli functional. For the choicek= 1 we show thatFε,a1Γ-converges to a branched transportation energy whose cost per unit length is a functionfan−1depending on a parametera> 0 and on the codimensionn− 1. The limit costfa(m) is bounded from below by 1 +mso that the limit functional controls the mass and the length of the limit object. In the limita ↓0 we recover the Steiner energy. We then generalize the approach to any dimension and codimension. The limit objects are nowk-currents with prescribed boundary, the limit functional controls both their masses and sizes. In the limita ↓0, we recover the Plateau energy defined onk-currents,k<n. The energiesFε,akthen could be used for the numerical treatment of thek-Plateau problem.
Doping profile measurement on textured silicon surface
Authors: Essa Zahi , Taleb Nadjib , Sermage Bernard , Broussillou Cédric , Bazer-Bachi Barbara , Quillec Maurice
Published: April 2018

In crystalline silicon solar cells, the front surface is textured in order to lower the reflection of the incident light and increase the efficiency of the cell. This texturing whose dimensions are a few micrometers wide and high, often makes it difficult to determine the doping profile measurement. We have measured by secondary ion mass spectrometry (SIMS) and electrochemical capacitance voltage profiling the doping profile of implanted phosphorus in alkaline textured and in polished monocrystalline silicon wafers. The paper shows that SIMS gives accurate results provided the primary ion impact angle is small enough. Moreover, the comparison between these two techniques gives an estimation of the concentration of electrically inactive phosphorus atoms.
The longitudinal pattern of crustacean (Peracarida, Malacostraca) assemblages in a large south European river: bank reinforcement structures as stepping stones of invasion
Authors: Žganec Krešimir , Ćuk Renata , Tomović Jelena , Lajtner Jasna , Gottstein Sanja , Kovačević Simona , Hudina Sandra , Lucić Andreja , Mirt Martina , Simić Vladica , Simčič Tatjana , Paunović Momir
Published: April 2018

The spread of alien crustaceans has significantly contributed to the homogenization of macroinvertebrate fauna of European freshwaters. However, little is known about alien Peracarida crustaceans of the Sava River, which represents the most important corridor for the spread of invasive species into Dinaric rivers with highly endemic fauna. In this study, we investigated Peracarida (Amphipoda, Isopoda and Mysida) collected during three years (2011, 2012 and 2015) from a total of 61 sites along the entire course of the Sava River. Besides describing the longitudinal pattern of Peracarida assemblages, we tested the hypothesis that bank reinforcement structures facilitate peracarid invasions by comparing densities and assemblages on natural and artificial substrate at 15 sites. In a total, 14 peracarid crustacean species (5 native and 9 alien) were recorded. The Upper third of Sava was inhabited by native peracarids only, while the Middle and Lower Sava were dominated by alien species. The invasive amphipodsDikerogammarus haemobaphes,Chelicorophium sowinskyiandChelicorophium curvispinum, and invasive isopod,Jaera istri, were the most abundant species along the middle course. Densities of alien peracarids in the Middle Sava were the highest and their share in macroinvertebrate assemblages was very variable, while the Lower Sava had the highest number of alien species in low densities. The densities of alien amphipods and isopods were in most cases significantly higher on bank reinforcement structures than on natural substrate. Therefore, artificial stony substrates act as stepping stones of invasion for alien peracarids and largely contribute to their success in large lowland rivers.
Database of episode-integrated solar energetic proton fluences
Authors: Robinson Zachary D. , Adams James H. , Xapsos Michael A. , Stauffer Craig A.
Published: April 2018

A new database of proton episode-integrated fluences is described. This database contains data from two different instruments on multiple satellites. The data are from instruments on the Interplanetary Monitoring Platform-8 (IMP8) and the Geostationary Operational Environmental Satellites (GOES) series. A method to normalize one set of data to one another is presented to create a seamless database spanning 1973 to 2016. A discussion of some of the characteristics that episodes exhibit is presented, including episode duration and number of peaks. As an example of what can be understood about episodes, the July 4, 2012 episode is examined in detail. The coronal mass ejections and solar flares that caused many of the fluctuations of the proton flux seen at Earth are associated with peaks in the proton flux during this episode. The reasoning for each choice is laid out to provide a reference for how CME and solar flares associations are made.
Geomagnetic storm forecasting service StormFocus: 5 years online
Authors: Podladchikova Tatiana , Petrukovich Anatoly , Yermolaev Yuri
Published: April 2018

Forecasting geomagnetic storms is highly important for many space weather applications. In this study, we review performance of the geomagnetic storm forecasting service StormFocus during 2011–2016. The service was implemented in 2011 at SpaceWeather.Ru and predicts the expected strength of geomagnetic storms as measured by Dst index several hours ahead. The forecast is based on L1 solar wind and IMF measurements and is updated every hour. The solar maximum of cycle 24 is weak, so most of the statistics are on rather moderate storms. We verify quality of selection criteria, as well as reliability of real-time input data in comparison with the final values, available in archives. In real-time operation 87% of storms were correctly predicted while the reanalysis running on final OMNI data predicts successfully 97% of storms. Thus the main reasons for prediction errors are discrepancies between real-time and final data (Dst, solar wind and IMF) due to processing errors, specifics of datasets.
Rauchverhalten bei Patienten und Beschäftigten einer psychiatrischen Klinik: zwei unabhängige Stichtagserhebungen im Abstand von 8 Jahren
Authors: Grempler Julia , Steinert Tilman , Schmid Petra
Published: April 2018

Anliegen Ziel der Studie war, die Prävalenz und das Rauchverhalten vor und nach der Einführung von Maßnahmen zum Nichtraucherschutz und Angeboten zur Tabakentwöhnung zu untersuchen.

Methode In 2 unabhängigen Stichtagsuntersuchungen (2007/2015) wurden Patienten und Beschäftigte einer psychiatrischen Klinik befragt.

Ergebnisse Der Raucheranteil war zu beiden Zeitpunkten bei den Patienten mit 59 % und 57 % sehr hoch. Bei den Beschäftigten lag er bei 35 % und 33 %. Patienten waren schwerer nikotinabhängig als Beschäftigte. Von allen Rauchern wollten bis zu 57 % das Rauchen aufgeben.

Schlussfolgerungen Die hohe Prävalenz des Rauchens und die starke Nikotinabhängigkeit wurden in beiden Stichproben beobachtet. Zur Senkung dieser sind konsequentere Maßnahmen in psychiatrischen Kliniken sowie gesamtgesellschaftlich notwendig.
Wer profitiert von einer Behandlung im Maßregelvollzug? Ergebnisse einer bayernweiten Katamnesestudie für den Bezirk Schwaben
Authors: Dudeck Manuela , Franke Irina , Bezzel Adelheid , Otte Stefanie , Ormanns Norbert , Nigel Stefanie , Segmiller Felix , Streb Judith
Published: April 2018

Ziel der Studie Evaluation der Maßregelbehandlung von 2010 – 2014 im Bezirk Schwaben.

Methodik Befragung von 130 Patienten direkt nach Entlassung und ein Jahr später zu sozialer Reintegration, Substanzkonsum und Delinquenz.

Ergebnisse Suchtpatienten waren ein Jahr nach Entlassung zu 67 % in Arbeit, zu 57 % abstinent und zu 83 % straffrei. Patienten, die nach § 63 untergebracht waren, waren zu 57 % berentet, zu 14 % in arbeitstherapeutischen Maßnahmen und zu 100 % straffrei.

Schlussfolgerung Maßregelbehandlung leistet einen Beitrag zu Rehabilitation und Risikominimierung psychisch kranker Straftäter.