bluuebunny/crossref_metadata_2025 huggingface dataset:
Angelica gigas ameliorates the destruction of gingival tissues via inhibition of MMP-9 activity
Authors: Kim Mi Hye , Lee Haesu , Yang Woong Mo
Published: April 2018

Angelica gigas (AG) has been used for periodontal diseases in traditional Korean medicine.
Investigation of the characteristics of concentrated leachate from six municipal solid waste incineration power plants in China
Authors: Ren Xu , Liu Dan , Chen Weiming , Jiang Guobin , Wu Zihan , Song Kai
Published: April 2018

The characteristics of concentrated leachate in municipal solid waste incineration power plants were analyzed from the CODCr, BOD5, the concentration of heavy metals, and spectral characteristics of dissolved organic matter.
Identification and quantification of microplastics in table sea salts using micro-NIR imaging methods
Authors: Zhang Jixiong , Tian Kuangda , Lei Chunli , Min Shungeng
Published: April 2018

A method for the identification and quantification of microplastics in table sea salts. The method meets the need for detecting and automatic counting microplastics simultaneously.
A fluorescent colorimetricazodye based chemosensor for detection of S2−in perfect aqueous solution and its application in real sample analysis and building a molecular logic gate
Authors: Manna Amit Kumar , Mondal Jahangir , Chandra Rukmani , Rout Kalyani , Patra Goutam Kumar
Published: April 2018

A fluorescent-colorimetricazodye basedbis-Schiff base chemosensor,L, has been developed.Lcan selectively detect S2−through a color change from yellow to orange in perfect aqueous solution by deprotonation mechanism.
Tea quality testing using 6B pencil lead as an electrochemical sensor
Authors: Vishnu Nandimalla , Gandhi Mansi , Badhulika Sushmee , Kumar Annamalai Senthil
Published: April 2018

Isomers of dihydroxy benzene (DHB) such as 1,2-DHB, 1,3-DHB and 1,2,3-trihydroxy benzene (1,2,3-THB) are the functional electro-active constituents of tea polyphenols.
A combination–decomposition method to synthesize two-dimensional metal sulfide–amine hybrid nanosheets: a highly efficient Fe-based water oxidation electrocatalyst
Authors: Zhang Guofeng , Qin Qing , Luo Wenhao , Liu Yanxia , Jin Cen , Hao Jing , Zhang Jing , Zheng Wenjun
Published: April 2018

A combination–decomposition approach for the synthesis of FeS1.4(Dmim)0.5 hybrid nanosheets, an efficient Fe-based water oxidation electrocatalyst.
An alkaline-resistant Ag(i)-anchored pyrazolate-based metal–organic framework for chemical fixation of CO2
Authors: Yang Huimin , Zhang Xu , Zhang Guiyang , Fei Honghan
Published: April 2018

An alkaline-resistant Ag(i)-anchored metal–organic framework has been achieved via postsynthetic modification of pyrazolate-based linkers.
Preparation of a chiral Pt12 tetrahedral cage and its use in catalytic Michael addition reaction
Authors: Bhat Imtiyaz Ahmad , Devaraj Anthonisamy , Howlader Prodip , Chi Ki-Whan , Mukherjee Partha Sarathi
Published: April 2018

A chiral M12L4 molecular tetrahedron (T) was synthesized by self-assembly of chiral cis-[(1S,2S)-dch]Pt(NO3)2 (M) with a hexadentate ligand (L) in 3 : 1 stoichiometric ratio. The cage T was found to catalyze the Michael addition reactions of series of nitrostyrene derivatives with indole in (9 : 1) water–methanol mixture.
The mechanochemical Scholl reaction – a solvent-free and versatile graphitization tool
Authors: Grätz Sven , Beyer Doreen , Tkachova Valeriya , Hellmann Sarah , Berger Reinhard , Feng Xinliang , Borchardt Lars
Published: April 2018

Ball milling was applied to a Scholl reaction of dendritic oligophenylene precursors to produce benchmark nanographenes under solvent-free conditions.
Polyvinyl alcohol–boronate gel for sodium hydroxide extraction
Authors: Peters Gretchen Marie , Chi Xiaodong , Brockman Chandler , Sessler Jonathan L.
Published: April 2018

Gels formed from commercially available polyvinyl alcohol (PVA) and 1,4-benzene diboronic acid (BdBA) in DMSO absorb NaOH efficiently from a bulk aqueous solution decreasing its pH.
Ligand induced shape transformation of thorium dioxide nanocrystals
Authors: Wang Gaoxue , Batista Enrique R. , Yang Ping
Published: April 2018

Selective adsorption of ligand on different surfaces leads to the anisotropic growth of nanocrystals.
Theoretical insight into the vibrational spectra of metal–water interfaces from density functional theory based molecular dynamics
Authors: Le Jiabo , Fan Qiyuan , Perez-Martinez Laura , Cuesta Angel , Cheng Jun
Published: April 2018

Density functional theory based molecular dynamics simulations reveal that the specific adsorption of surface water causes a red-shift of the O–H stretching frequency at the Pt–water interface.
Fundamental study of hydrogen-attachment-induced peptide fragmentation occurring in the gas phase and during the matrix-assisted laser desorption/ionization process
Authors: Asakawa Daiki , Takahashi Hidenori , Iwamoto Shinichi , Tanaka Koichi
Published: April 2018

Mass spectrometry with hydrogen-radical-mediated fragmentation techniques has been used for the sequencing of proteins/peptides.
Photodissociation of CF2ICF2I in solid para-hydrogen: infrared spectra of anti- and gauche-˙C2F4I radicals
Authors: Haupa Karolina Anna , Lim Manho , Lee Yuan-Pern
Published: April 2018

Ultraviolet photolysis of 1,2-diiodotetrafluoroethane (CF2ICF2I) produced anti- and gauche-˙C2F4I radicals.
Planar pentacoordinate carbon in CGa5+ derivatives
Authors: Pan Sudip , Cabellos José Luis , Orozco-Ic Mesías , Chattaraj Pratim K. , Zhao Lili , Merino Gabriel
Published: April 2018

A single isoelectronic substitution by a smaller sized element, Be, is enough to stabilize a CGa5+ cluster with a planar pentacoordinate carbon at the centre.
Molecular dynamics study on cold-welding of 3D nanoporous composite structures
Authors: Zhou Hongjian , Li Jiejie , Xian Yuehui , Wu Runni , Hu Guoming , Xia Re
Published: April 2018

Molecular dynamic simulations were used to explore the effects of temperature on cold-welding of nanoporous composite structures.
A reversible conductivity modulation of azobenzene-based ionic liquids in aqueous solutions using UV/vis light
Authors: Li Zhiyong , Yuan Xiaoqing , Feng Ying , Chen Yongkui , Zhao Yuling , Wang Huiyong , Xu Qingli , Wang Jianji
Published: April 2018

The conductivity of azobenzene-based ionic liquids in water can be reversibly and efficiently modulated using UV/vis light irradiation.
Characterizing the hydrophobic-to-hydrophilic transition of electrolyte structuring in proton exchange membrane mimicking surfaces
Authors: Moreno Ostertag Laila , Ling Xiao , Domke Katrin F. , Parekh Sapun H. , Valtiner Markus
Published: April 2018

The surface density of charged sulfonic acid head groups in a perfluorosulfonic acid (PFSA) proton exchange membrane determines the hydrophilicity of the ionic channels and is thus critical for the structuring and transport of water and protons.
Enhancement of the activity of Pd/C catalysts in aqueous phase hydrodechlorination through doping of carbon supports
Authors: Ruiz-García Cristina , Heras Francisco , Alonso-Morales Noelia , Calvo Luisa , Rodriguez Juan J. , Gilarranz Miguel A.
Published: April 2018

Improved catalytic activity in the hydrodechlorination reaction at room temperature with N-doped carbon as the support of Pd nanoparticles.
Unique and contrasting structures of homoleptic lanthanum(iii) and cerium(iii) 3,5-dimethylpyrazolates
Authors: Werner Daniel , Bayer Uwe , Rad Nazli E. , Junk Peter C. , Deacon Glen B. , Anwander Reiner
Published: April 2018

Six coordination modes are observed in the tetranuclear cage [Ce4(Me2pz)12] while lanthanum features a coordination polymer with an unusual η5:η5 Me2pz sandwich.
Ordnung muss sein: heteroelement order and disorder in polyoxovanadates
Authors: Wendt M. , Mahnke L. K. , Näther C. , van Leusen J. , Kögerler P. , Bensch W.
Published: April 2018

Three new mixed antimonato–germanato polyoxovanadates exhibit different degrees of order of their unique crystallographic heterometal atom positions.
Design and synthesis of functionalized coordination polymers as recyclable heterogeneous photocatalysts
Authors: Ye Cai-Ping , Xu Gan , Wang Zheng , Han Jie , Xue Lian , Cao Fu-Yu , Zhang Qi , Yang Lin-Feng , Lin Li-Zhou , Chen Xu-Dong
Published: April 2018

Transition metal coordination polymers based on an anthraquinone functionalized dicarboxylate ligand were designed and synthesized to develop recyclable heterogeneous photocatalysts.
From 2D → 3D interpenetration to packing: N coligand-driven structural assembly and tuning of luminescent sensing activities towards Fe3+ and Cr2O72− ions
Authors: Chen Zhiwei , Mi Xiuna , Lu Jing , Wang Suna , Li Yunwu , Dou Jianmin , Li Dacheng
Published: April 2018

Three complexes were hydrothermally synthesized and exhibited excellent selectivity towards Fe3+ and Cr2O72−.
Microenvironmental influence on microtumour infiltration patterns: 3D-mathematical modelling supported byin vitrostudies
Authors: Luján Emmanuel , Soto Daniela , Rosito María S. , Soba Alejandro , Guerra Liliana N. , Calvo Juan C. , Marshall Guillermo , Suárez Cecilia
Published: April 2018

We present a new mathematical model with the ability to describe the growth and infiltration patterns of multicellular tumour spheroids immersed under different microenvironmental conditions.
Use of an inline dilution method to eliminate species interconversion for LC-ICP-MS based applications: focus on arsenic in urine
Authors: Quarles C. Derrick , Sullivan Patrick , Field M. Paul , Smith Scott , Wiederin Daniel R.
Published: April 2018

Elimination of arsenic species interconversion in urineviaa syringe driven, inline dilution, liquid chromatography system.
A simple microfluidic platform for rapid and efficient production of the radiotracer [18F]fallypride
Authors: Zhang Xin , Liu Fei , Knapp Karla-Anne , Nickels Michael L. , Manning H. Charles , Bellan Leon M.
Published: April 2018

Herein, we report the development of a simple, high-throughput and efficient microfluidic system for synthesizing radioactive [18F]fallypride, a PET imaging radiotracer widely used in medical research.
A novel and high performance enzyme-less sensing layer for electrochemical detection of methyl parathion based on BSA templated Au–Ag bimetallic nanoclusters
Authors: Rahmani Turaj , Hajian Ali , Afkhami Abbas , Bagheri Hasan
Published: April 2018

In the present manuscript, a modified glassy carbon electrode with BSA templated Au–Ag bimetallic nanoclusters (Au–Ag@BSA/GCE) was employed for the rapid, selective and sensitive determination of methyl parathion (MP) as an enzyme-less electrochemical biosensor.
Fabrication of hierarchical CoP nanosheet@microwire arrays via space-confined phosphidation toward high-efficiency water oxidation electrocatalysis under alkaline conditions
Authors: Ji Xuqiang , Zhang Rong , Shi Xifeng , Asiri Abdullah M. , Zheng Baozhan , Sun Xuping
Published: April 2018

Hierarchical CoP nanosheet@microwire array on nickel foam (CoP NS@MW/NF) was developed as water oxidation electrocatalyst, with overpotential of 296 mV to drive 100 mA cm−2 in 1.0 M KOH.
A rationally designed self-standing V2O5 electrode for high voltage non-aqueous all-solid-state symmetric (2.0 V) and asymmetric (2.8 V) supercapacitors
Authors: Ghosh Meena , Vijayakumar Vidyanand , Soni Roby , Kurungot Sreekumar
Published: April 2018

A highly efficient all-solid-state asymmetric supercapacitor device fabricated using electrodeposited V2O5 with a non-aqueous polymer gel electrolyte.
Chemically initiated liquid-like behavior and fabrication of periodic wavy Cu/CuAu nanocables with enhanced catalytic properties
Authors: Jiang Zhiyuan , Jiang Qiaorong , Huang Rao , Sun Mingjun , Wang Kaili , Kuang Qin , Zhu Zi-Zhong , Xie Zhaoxiong
Published: April 2018

Chemical processes may play a similar role as heat and initiate liquid-like behavior of crystalline Cu/CuAu nanocables at a temperature far below their melting points.
Self-plied and twist-stable carbon nanotube yarn artificial muscles driven by organic solvent adsorption
Authors: Jin Kaiyun , Zhang Silan , Zhou Susheng , Qiao Jian , Song Yanhui , Di Jiangtao , Zhang Dengsong , Li Qingwen
Published: April 2018

A self-plied, twist-stable carbon nanotube yarn muscle was demonstrated, which provided decoupled actuations of large tensile strokes against heavy load but zero torsional stroke.
Revealing the role of NH4VO3 treatment in Ni-rich cathode materials with improved electrochemical performance for rechargeable lithium-ion batteries
Authors: Zhang Congcong , Liu Siyang , Su Junming , Chen Chunguang , Liu Mengmeng , Chen Xiang , Wu Jianhua , Huang Tao , Yu Aishui
Published: April 2018

The Li3VO4 layer increases structural stability and inhibits electrolyte decomposition, thus helping LINi0.6Co0.2Mn0.2O2 display excellent electrochemical performance.
Facet-selective deposition of Au and Pt on Ag nanocubes for the fabrication of bifunctional Ag@Au–Pt nanocubes and trimetallic nanoboxes
Authors: Zhang Zhiwei , Ahn Jaewan , Kim Junki , Wu Zhengyun , Qin Dong
Published: April 2018

We report a facile route to the synthesis of Ag@Au–Pt trimetallic nanocubes in which the Ag, Au, and Pt atoms are exposed at the corners, side faces, and edges, respectively.
Effect of dihydronaphthyl-based C60 bisadduct as third component materials on the photovoltaic performance and charge carrier recombination of binary PBDB-T : ITIC polymer solar cells
Authors: Niu Shengli , Liu Zhiyong , Wang Ning
Published: April 2018

A dihydronaphthyl-based C60 bisadduct (NCBA) acceptor was introduced as a third component material to typical binary polymer solar cells (PSCs).
Plasmon-induced nonlinear response of silver atomic chains
Authors: Yan Lei , Guan Mengxue , Meng Sheng
Published: April 2018

The microscopic mechanism for plasmon-induced nonlinear effects is revealed using time-dependent density functional theory.
Radiosynthesis of the anticancer nucleoside analogue Trifluridine using an automated 18F-trifluoromethylation procedure
Authors: King Alice , Doepner Andreas , Turton David , Ciobota Daniela M. , Da Pieve Chiara , Wong Te Fong Anne-Christine , Kramer-Marek Gabriela , Chung Yuen-Li , Smith Graham
Published: April 2018

Automated 18F-trifluoromethylation provided the first radiosynthesis of [18F]Trifluridine, which shows potential as a PET probe of drug mechanism of action.
Scope and limitations of ring-opening copolymerization of trimethylene carbonate with substituted γ-thiolactones
Authors: Langlais M. , Coutelier O. , Moins S. , De Winter J. , Coulembier O. , Destarac M.
Published: April 2018

The reactivity of functional γ-thiolactones has been investigated in Ring Opening Copolymerization with trimethylene carbonate.
Synthesis of multi-arm star thermo-responsive polymers and topology effects on phase transition
Authors: Cao Mengjiao , Han Guang , Duan Wenfeng , Zhang Wangqing
Published: April 2018

Linear and star thermo-responsive polymers of poly(N-acryloylsarcosine methyl ester) [(PNASME)n] and poly(N-isopropylacrylamide) [(PNIPAM)n] with arm number n = 1, 2, 3 and 4 were synthesized following a core-first method via solution RAFT polymerization employing a series of mono- and multi-functional chain transfer agents.
Hydrothermal synthesis of ternary MoS2xSe2(1−x) nanosheets for electrocatalytic hydrogen evolution
Authors: Zhen Congli , Zhang Bin , Zhou Yuhong , Du Yunchen , Xu Ping
Published: April 2018

MoS2xSe2(1−x) nanosheets exhibit promising electrocatalytic hydrogen evolution activity in acidic media.
Facile synthesis of P(EDOT/Ani) : PSS with enhanced heat shielding efficiencyviatwo-stage shot growth
Authors: Park Chanil , Im Soeun , Cho Wonseok , Kim Yunryeol , Kim Jung Hyun
Published: April 2018

Poly(3,4-ethylenedioxythiophene/aniline) : poly(styrene sulfonate), P(EDOT/Ani) : PSS, with enhanced absorption of near infrared light, was prepared by oxidative polymerization.
Magnetic surface molecularly imprinted poly(3-aminophenylboronic acid) for selective capture and determination of diethylstilbestrol
Authors: Zhao Wen-Rui , Kang Tian-Fang , Lu Li-Ping , Cheng Shui-Yuan
Published: April 2018

Imprinted poly(APBA) nanoshell on Fe3O4@SiO2 surface was first synthesized and used for MSPE of diethylstilbestrol followed by HPLC determination.
Study on the flammability, thermal stability and diffusivity of polyethylene nanocomposites containing few layered tungsten disulfide (WS2) functionalized with metal oxides
Authors: Wenelska K. , Maślana K. , Mijowska E.
Published: April 2018

In this work, exfoliated tungsten disulfide (WS2) functionalized with metal oxides as a filler of polyethylene (PE) was used.
A bidirectional growth mechanism for a stable lithium anode by a platinum nanolayer sputtered on a polypropylene separator
Authors: Wen Kaihua , Liu Lili , Chen Shimou , Zhang Suojiang
Published: April 2018

Stable Li nucleation and deposition were achieved by applying a platinum-modified-separator with a bidirectional lithium growth mechanism.
9,10-Azaboraphenanthrene-containing small molecules and conjugated polymers: synthesis and their application in chemodosimeters for the ratiometric detection of fluoride ions
Authors: Zhang Weidong , Li Guoping , Xu Letian , Zhuo Yue , Wan Wenming , Yan Ni , He Gang
Published: April 2018

The introduction of main group elements into conjugated scaffolds is emerging as a key route to novel optoelectronic materials.
Why one can expect large rectification in molecular junctions based on alkane monothiols and why rectification is so modest
Authors: Xie Zuoti , Bâldea Ioan , Frisbie C. Daniel
Published: April 2018

The Stark effect plays a key role in understanding why, against expectation, alkane thiols are not high-performance molecular rectifiers.
Hierarchical 3D Zn–Ni–P nanosheet arrays as an advanced electrode for high-performance all-solid-state asymmetric supercapacitors
Authors: Nguyen Thanh Tuan , Balamurugan Jayaraman , Kim Nam Hoon , Lee Joong Hee
Published: April 2018

A hierarchical 3D Zn–Ni–P nanosheet arrays based all-solid-state ASC exhibits an excellent energy density of ∼90.12 W h kg−1 at 0.61 kW kg−1, power density of ∼8.77 kW kg−1 at 65.83 W h kg−1, and extraordinary cycling stability of ∼93.05% capacitance retention after 20 000 cycles.
A general strategy for the synthesis of two-dimensional holey nanosheets as cathodes for superior energy storage
Authors: Wu Yu , Cao Tai , Wang Ran , Meng Fanji , Zhang Junting , Cao Chuanbao
Published: April 2018

We designed and synthesized two-dimensional holey nanosheets as cathodes via a simple, scalable, and general morphology-inheritance strategy.
Fabrication of inherently radiopaque BaSO4@BaAlg microspheres by a one-step electrospraying method for embolization
Authors: Du Qing , Li Ling , Liu Yiming , Zeng Jian , Li Jianye , Zheng Chuansheng , Zhou Guofeng , Yang Xiangliang
Published: April 2018

Inherently radiopaque BaSO4@BaAlg microspheres were fabricated by a one-step electrospraying method for embolization and noninvasive examination after operations.
Correction: An overview of metamaterials and their achievements in wireless power transfer
Authors: Sun Kai , Fan Runhua , Zhang Xihua , Zhang Zidong , Shi Zhicheng , Wang Ning , Xie Peitao , Wang Zhongyang , Fan Guohua , Liu Hu , Liu Chuntai , Li Tingxi , Yan Chao , Guo Zhanhu
Published: April 2018

Correction for ‘An overview of metamaterials and their achievements in wireless power transfer’ by Kai Sun et al., J. Mater. Chem. C, 2018, DOI: 10.1039/c7tc03384b.
Effects of dietary salt on gene and protein expression in brain tissue of a model of sporadic small vessel disease
Authors: Bailey Emma L. , McBride Martin W. , McClure John D. , Beattie Wendy , Graham Delyth , Dominiczak Anna F. , Smith Colin , Wardlaw Joanna M.
Published: April 2018

Background: The effect of salt on cerebral small vessel disease (SVD) is poorly understood. We assessed the effect of dietary salt on cerebral tissue of the stroke-prone spontaneously hypertensive rat (SHRSP) – a relevant model of sporadic SVD – at both the gene and protein level. Methods: Brains from 21-week-old SHRSP and Wistar-Kyoto rats, half additionally salt-loaded (via a 3-week regime of 1% NaCl in drinking water), were split into two hemispheres and sectioned coronally – one hemisphere for mRNA microarray and qRT-PCR, the other for immunohistochemistry using a panel of antibodies targeting components of the neurovascular unit. Results: We observed differences in gene and protein expression affecting the acute phase pathway and oxidative stress (ALB, AMBP, APOH, AHSG and LOC100129193, up-regulated in salt-loaded WKY versus WKY, >2-fold), active microglia (increased Iba-1 protein expression in salt-loaded SHRSP versus salt-loaded WKY, p<0.05), vascular structure (ACTB and CTNNB, up-regulated in salt-loaded SHRSP versus SHRSP, >3-fold; CLDN-11, VEGF and VGF down-regulated >2-fold in salt-loaded SHRSP versus SHRSP) and myelin integrity (MBP down-regulated in salt loaded WKY rats versus WKY, >2.5-fold). Changes of salt-loading were more pronounced in SHRSP and occurred without an increase in blood pressure in WKY rats. Conclusion: Salt exposure induced changes in gene and protein expression in an experimental model of SVD and its parent rat strain in multiple pathways involving components of the glio-vascular unit. Further studies in pertinent experimental models at different ages would help clarify the short- and long-term effect of dietary salt in SVD.
Energetics of Hi-C EUV brightenings
Authors: Subramanian Srividya , Kashyap Vinay L. , Tripathi Durgesh , Madjarska Maria S. , Doyle John G.
Published: April 2018

We study the thermal structure and energetics of the point-like extreme ultraviolet (EUV) brightenings within a system of fan loops observed in the active region AR 11520. These brightenings were simultaneously observed on 2012 July 11 by the High-resolution Coronal (Hi-C) imager and the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). We identified 27 brightenings by automatically determining intensity enhancements in both Hi-C and AIA 193 Å light curves. The energetics of these brightenings were studied using the Differential Emission Measure (DEM) diagnostics. The DEM weighted temperatures of these transients are in the range log T(K) = 6.2−6.6 with radiative energies ≈1024−25 ergs and densities approximately equal to a few times 109 cm−3. To the best of our knowledge, these are the smallest brightenings in EUV ever detected. We used these results to determine the mechanism of energy loss in these brightenings. Our analysis reveals that the dominant mechanism of energy loss for all the identified brightenings is conduction rather than radiation.
Magnetic field at a jet base: extreme Faraday rotation in 3C 273 revealed by ALMA
Authors: Hovatta T. , O’Sullivan S. , Martí-Vidal I. , Savolainen T. , Tchekhovskoy A.
Published: April 2018

Aims. We studied the polarization behavior of the quasar 3C 273 over the 1 mm wavelength band at ALMA with a total bandwidth of 7.5 GHz across 223–243 GHz at 0.8′′ resolution, corresponding to 2.1 kpc at the distance of 3C 273. With these observations we were able to probe the optically thin polarized emission close to the jet base, and constrain the magnetic field structure.

Methods. We computed the Faraday rotation measure using simple linear fitting and Faraday rotation measure synthesis. In addition, we modeled the broadband behavior of the fractional Stokes Q and U parameters (qu-fitting). The systematic uncertainties in the polarization observations at ALMA were assessed through Monte Carlo simulations.

Results. We find the unresolved core of 3C 273 to be 1.8% linearly polarized. We detect a very high rotation measure (RM) of (5.0 ± 0.3) × 105 rad m−2 over the 1 mm band when assuming a single polarized component and an external RM screen. This results in a rotation of >40° of the intrinsic electric vector position angle, which is significantly higher than typically assumed for millimeter wavelengths. The polarization fraction increases as a function of wavelength, which according to our qu-fitting could be due to multiple polarized components of different Faraday depth within our beam or to internal Faraday rotation. With our limited wavelength coverage we cannot distinguish between the cases, and additional multifrequency and high angular resolution observations are needed to determine the location and structure of the magnetic field of the Faraday active region. Comparing our RM estimate with values obtained at lower frequencies, the RM increases as a function of observing frequency, following a power law with an index of 2.0 ± 0.2, consistent with a sheath surrounding a conically expanding jet. We also detect ~0.2% circular polarization, although further observations are needed to confirm this result.
Small impacts on the giant planet Jupiter
Authors: Hueso R. , Delcroix M. , Sánchez-Lavega A. , Pedranghelu S. , Kernbauer G. , McKeon J. , Fleckstein A. , Wesley A. , Gómez-Forrellad J. M. , Rojas J. F. , Juaristi J.
Published: April 2018

Context. Video observations of Jupiter obtained by amateur astronomers over the past 8 years have shown five flashes of light with durations of 1–2 s, each observed by at least two observers that were geographically separated. The first three of these events occurred on 3 June 2010, 20 August 2010, and 10 September 2012. Previous analyses of their light curves showed that they were caused by the impact of objects of 5–20 m in diameter, depending on their density, with a released energy comparable to superbolides on Earth of the class of the Chelyabinsk airburst. The most recent two flashes on Jupiter were detected on 17 March 2016 and 26 May 2017 and are analyzed here.

Aims. We characterize the energy involved together with the masses and sizes of the objects that produced these flashes. The rate of similar impacts on Jupiter provides improved constraints on the total flux of impacts on the planet, which can be compared to the amount of exogenic species detected in the upper atmosphere of Jupiter.

Methods. We extracted light curves of the flashes and calculated the masses and sizes of the impacting objects after calibrating each video observation. We also present results from a systematic search of impacts on >72 000 video amateur observations with a customized software that is based on differential photometry of the images. An examination of the number of amateur observations of Jupiter as a function of time over the past years allows us to interpret the statistics of these impact detections.

Results. The cumulative flux of small objects (5–20 m or larger) that impact Jupiter is predicted to be low (10–65 impacts per year), and only a fraction of them are potentially observable from Earth (4–25 observable impacts per year in a perfect survey). These numbers imply that many observers are required to efficiently discover Jupiter impacts.

Conclusions. We predict that more impacts will be found in the next years, with Jupiter opposition displaced toward summer in the northern hemisphere where most amateur astronomers observe. Objects of this size contribute negligibly to the abundance of exogenous species and dust in the stratosphere of Jupiter when compared with the continuous flux from interplanetary dust particles punctuated by giant impacts. Flashes of a high enough brightness (comparable at their peak to a +3.3 magnitude star) could produce an observable debris field on the planet. We estimate that a continuous search for these impacts might find these events once every 0.4–2.6 yr.
Improving the design of the earthquake-proof suspension building
Authors: Azizov Taliat , Jurkowska Nadzieja
Published: April 2018

The proposal for improving the constructive scheme of the supporting frame of the suspension building has been considered. The strains in its bearing elements due to earthquakes are significantly less than in the traditional cantilever buildings. In former schemes the vertical components of strains develop during horizontal oscillations of the grounds. This disadvantage has been eliminated now. It is shown that in the improved design of the structure under the earthquake the vertical component of vibrations is practically absent, due to arrangement of the suspension device strictly vertically. The numerical data for calculation results with variation of some characteristics of the supporting frame and suspensions have been shown in order to allow adjusting the dynamic strains at the vibrations of the base. The scheme for installation the vertical elements of the frame have been proposed. Its usage will allow to build the high-rise suspension buildings.
Modeling of information on the impact of mining exploitation on bridge objects in BIM
Authors: Bętkowski Piotr
Published: April 2018

The article discusses the advantages of BIM (Building Information Modeling) technology in the management of bridge infrastructure on mining areas. The article shows the problems with information flow in the case of bridge objects located on mining areas and the advantages of proper information management, e.g. the possibility of automatic monitoring of structures, improvement of safety, optimization of maintenance activities, cost reduction of damage removal and preventive actions, improvement of atmosphere for mining exploitation, improvement of the relationship between the manager of the bridge and the mine. Traditional model of managing bridge objects on mining areas has many disadvantages, which are discussed in this article. These disadvantages include among others: duplication of information about the object, lack of correlation in investments due to lack of information flow between bridge manager and mine, limited assessment possibilities of damage propagation on technical condition and construction resistance to mining influences.
Effects of strong mining tremors, and assessment of the buildings' resistance to the dynamic impacts
Authors: Bryt-Nitarska Izabela
Published: April 2018

A particularly important element in the assessment of the actual state of the threats which is caused by conducting the mining exploitation of seams bumping under the urban areas is to diagnose the condition of the land development after hard shocks. In the buildings, for which the impact of the mining activities, including the tremors, is not taken into account at the stage of design and formulation of the strength and use conditions, conclusions from the structure behaviour under the tremor influence are an essential part of the assessment of the possibility for transferring the further dynamic impacts. The use of conclusions from the in situ research has its role in anticipating the behaviour of the buildings in case of the forecast of the mining tremors effects in the regions of their impacts. These conclusions should also provide ground for the assumptions to the scope of the building prevention necessary to be taken in case of forecasting the tremors with big intensity. Based on the analysis of effects which occurred in the land development after the highenergy mining tremors, the elements of the dynamic resistance assessment for the buildings with traditional structure were discussed.
Industrial chimney monitoring - contemporary methods
Authors: Kaszowska Olga , Gruchlik Piotr , Mika Wiesław
Published: April 2018

The paper presents knowledge acquired during the monitoring of a flue-gas stack, performed as part of technical and scientific surveillance of mining activity and its impact on industrial objects. The chimney is located in an area impacted by mining activity since the 1970s, from a coal mine which is no longer in existence. In the period of 2013-16, this area was subject to mining carried out by a mining entrepreneur who currently holds a license to excavate hard coal. Periodic measurements of the deflection of the 113-meter chimney are performed using conventional geodetic methods. The GIG used 3 methods to observe the stack: landbased 3D laser scanning, continuous deflection monitoring with a laser sensor, and drone-based visual inspections. The drone offered the possibility to closely inspect the upper sections of the flue-gas stack, which are difficult to see from the ground level.
Approximate classification of mining tremors harmfulness based on free-field and building foundation vibrations
Authors: Kuzniar Krystyna , Stec Krystyna , Tatara Tadeusz
Published: April 2018

The paper compares the results of an approximate evaluation of mining tremors harmfulness performed on the basis of free-field and simultaneously measured building foundation vibrations. The focus is on the office building located in the Upper Silesian Basin (USB). The empirical Mining Intensity Scale GSI-GZWKW-2012 has been applied to classify the harmfulness of the rockbursts. This scale is based on the measurements of free-field vibrations but, for research purposes, it was also used in the cases of building foundation vibrations. The analysis was carried out using the set of 156 pairs ground – foundation of velocity vibration records as well as the set of 156 pairs of acceleration records induced by the same mining tremors.
Some aspects of forecasting the post-mining substratum deformation for evaluation of its influence on constructions
Authors: Strzałkowski Piotr , Ścigała Roman , Szafulera Katarzyna
Published: April 2018

Some problems have been discussed, connected with performing predictions of post-mining terrain deformations. Especially problems occur with the summation of horizontal strain over long time intervals as well as predictions of linear discontinuous deformations. Of great importance in recent years is the problem of taking into account transient values of deformations associated with the development of extraction field. The exemplary analysis has been presented of planned extraction influences on two characteristic locations of building structure. The proposal has been shown of calculations with using transient deformation model allowing to describe the influence of extraction advance influence on the value of coefficient of extraction rate c (time factor), according to own original empirical formula.
The influence of para-seismic vibrations, induced by blasting works, on structures: a Case Study
Authors: Andrusikiewicz Wacław
Published: April 2018

Underground mining operations are often associated with the necessity to use explosives. Several hundreds of kilograms of explosives, subdivided into small charges suitable for a specific mining job, are used each time in a blasting operation. In many cases, mining engineers carry out remote central blasting works, which means that all the charges placed at faces are initiated from one control point (usually, a control room in the mine) at the same time. Such coordinated explosions generate para-seismic movements whose consequences can be felt on land surface, with subsequent effects identified in buildings and structures. This paper discusses briefly selected standards applicable to the harmful para-seismic impacts. The author presents the results of the research conducted with the intention to identify harmful effects of the basting works carried out in the “Kłodawa” Salt Mine.
The use of vibration monitoring to record the blasting works impact on buildings surrounding open-pit mines
Authors: Sołtys Anna , Pyra Józef , Winzer Jan
Published: April 2018

Environmental protection law and geological and mining law require the mineral mining plant to protect its surroundings from the effects of mining operations. This also applies to the negative impact of vibrations induced by blasting works on people and construction facilities. Effective protection is only possible if the level of this impact is known, therefore it is necessary to record it. The thesis formulated in this way has been and continues to be the guiding principle of the research works carried out in the AGH Laboratory of Blasting Work and Environmental Protection. As a result of these works are procedures for conducting preventive activities by open-pit mines in order to minimize the impact of blasting on facilities in the surrounding area. An important element of this activity is the monitoring of vibrations in constructions, which is a source of knowledge for excavation supervisors and engineers performing blasting works, thus contributing to raising the awareness of the responsible operation of the mining plant. Developed in the Laboratory of the Mine's Vibration Monitoring Station (KSMD), after several modernizations, it became a fully automated system for monitoring and recording the impact of blasting works on the surrounding environment. Currently, there are 30 measuring devices in 10 open-pit mines, and additional 8 devices are used to provide periodic measurement and recording services for the mines concerned.
Measurement methods of building structures deflections
Authors: Wróblewska Magdalena
Published: April 2018

Underground mining exploitation is leading to the occurrence of deformations manifested by, in particular, sloping terrain. The structures situated on the deforming subsoil are subject to uneven subsidence which is leading in consequence to their deflection. Before a building rectification process takes place by, e.g. uneven raising, the structure's deflection direction and value is determined so that the structure is restored to its vertical position as a result of the undertaken remedial measures. Deflection can be determined by applying classical as well as modern measurement techniques. The article presents examples of measurement methods used considering the measured elements of building structures’ constructions and field measurements. Moreover, for a given example of a mining area, the existing deflections of buildings were compared with mining terrain sloping.
Results of the freeze resistance test, swelling index and coefficient of permeability of finegrained mining waste reinforced with cements
Authors: Morman Justyna
Published: April 2018

The article presents the result of laboratory tests for mining waste with grain size of 0 to 2 mm stabilized with cement. Used for stabilization of cement CEM I 42.5 R and blast furnace cement CEM III / A 42.5N - LH / HSR / NA and a plasticizer sealant. Cement was added to the mining waste test in the proportions of 5 - 8% in relation to the skeleton's weight. For the cemented samples, the freeze resistance test, swelling index, coefficient of permeability and pH of water leachate were tested. The addition of a cement binder resulted in diminishing the water permeability of mining waste and limiting the leaching of fine particles from the material.
Rockburst of parameters causing mining disasters in Mines of Upper Silesian Coal Basin
Authors: Patyńska Renata , Mirek Adam , Burtan Zbigniew , Pilecka Elżbieta
Published: April 2018

In the years 2001-2015, 42 rockbursts were recorded in Polish coal mines. For the past 15 years the scale of the phenomena has been similar and ranges from 1 to 5 rockbursts per year. However, the number of recorded high energy seismic tremors of 108 and 109J (E) energy that has occurred in recent years, 2 to 5, is alarming. According to the data, 27 of tremors of E > 108 J energy that occurred between 2001 and 2015 caused 3 rockbursts. Confronting these data with seismic activity from 1989-2000, it should be noted that only 2 events out of 99 rockbursts caused tremors with energies of E>108 J. Against the background of the scale of seismic and rockburst hazards, the geological and mining conditions of the Upper Silesian Coal Basin (USCB) have been analysed, detailing the structural units in which the rockbursts occurred. On this basis, the author characterised factors that impacts on the mining excavations resulting in rockbursts that caused damage on a larger scale. These rockbursts had the characteristics of mining catastrophes and weak earthquakes not recorded in mining statistics of natural hazards of USCB so far.
α-decay half-lives of some nuclei from ground state to ground state using different nuclear potential
Authors: Akrawy Dashty T.
Published: April 2018

Theoretical α-decay half-lives of some nuclei from ground state to ground state are calculated using different nuclear potential model including Coulomb proximity potential (CPPM), Royer proximity potential and Broglia and Winther 1991. The calculated values comparing with experimental data, it is observed that the CPPM model is in good agreement with the experimental data.
An optimization methodology for heterogeneous minor actinides transmutation
Authors: Kooyman Timothée , Buiron Laurent , Rimpault Gérald
Published: April 2018

In the case of a closed fuel cycle, minor actinides transmutation can lead to a strong reduction in spent fuel radiotoxicity and decay heat. In the heterogeneous approach, minor actinides are loaded in dedicated targets located at the core periphery so that long-lived minor actinides undergo fission and are turned in shorter-lived fission products. However, such targets require a specific design process due to high helium production in the fuel, high flux gradient at the core periphery and low power production. Additionally, the targets are generally manufactured with a high content in minor actinides in order to compensate for the low flux level at the core periphery. This leads to negative impacts on the fuel cycle in terms of neutron source and decay heat of the irradiated targets, which penalize their handling and reprocessing. In this paper, a simplified methodology for the design of targets is coupled with a method for the optimization of transmutation which takes into account both transmutation performances and fuel cycle impacts. The uncertainties and performances of this methodology are evaluated and shown to be sufficient to carry out scoping studies. An illustration is then made by considering the use of moderating material in the targets, which has a positive impact on the minor actinides consumption but a negative impact both on fuel cycle constraints (higher decay heat and neutron) and on assembly design (higher helium production and lower fuel volume fraction). It is shown that the use of moderating material is an optimal solution of the transmutation problem with regards to consumption and fuel cycle impacts, even when taking geometrical design considerations into account.
Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency
Authors: Bandaccari Kyle J. , Chesmore Grace E. , Bugaj Mitchel , Valverde Parisa Tajalli-Tehrani , Barber Richard P. , McNelis Brian J.
Published: April 2018

We report the effects of the addition of two azo-dye additives on the time-dependent efficiency of polymer solar cells. Although the maximum efficiencies of devices containing different amounts of dye do not vary greatly over the selected concentration range, the time dependence results reveal a surprising initial increase in efficiency in some samples. We observe this effect to be correlated with a leakage current, although a specific mechanism is not yet identified. We also present the measured lifetimes of these solar cells, and find that variations in dye concentrations produce a small effect at most. Characterization of the bulk heterojunction layer (active layer) morphology using atomic-force microscope (AFM) imaging reveals reordering patterns which suggest that the primary effects of the dyes arise via structural, not absorptive, characteristics.
Méthode de décomposition modale : description quantitative de la granulométrie et autres paramètres
Authors: Chapuis Robert P.
Published: April 2018

La méthode de décomposition modale (MDM) a été développée pour extraire d’une courbe granulométrique ses composantes lognormales, et leurs proportions dans l’échantillon analysé. Pour les études des eaux souterraines, on récupère des échantillons de sol de classe 4 ou 5, remaniés à très remaniés. Malgré le remaniement, la MDM récupère l’information sur la stratification. Elle permet alors de bien prédire la conductivité hydraulique, en tenant compte de cette stratification, une information clé pour bien comprendre la migration de l’eau souterraine. De plus, la MDM peut analyser la distribution des valeurs d’autres paramètres géotechniques.
Multipoint Numerical Criterion for Manifolds to Guarantee Attractor Properties in the Problem of Synergetic Control Design
Authors: Diveev Askhat , Shmalko Elizaveta , Sofronova Elena
Published: April 2018

The paper presents the results of our research on the application of symbolic regression methods for the numerical solution of the problem of synthesis of synergetic control. Synergetic control is characterized by the presence of manifolds in the state space that must have the properties of an attractor, in particular terminal manifolds, as well as the existence of regions of state space through which system solutions do not pass, for example, phase constraints, that must have the properties of repellers. In the present paper we formulate a numerical criterion for ensuring the property of an attractor for a terminal manifold of arbitrary dimension, taking into account the dynamic behavior of the system in a neighborhood of a given manifold. The results of computational experiments on the effective application of the proposed criterion are presented. It is shown that the proposed approach makes it possible to automate the synthesis of synergistic control using the methods of symbolic regression.
The approaches to developing the distributed information-control systems of organizational type
Authors: Lyaskovsky Victor L. , Bresler Igor B. , Alasheev Mihail A.
Published: April 2018

The article contains the results of research aimed at developing a scientific and methodological framework for justifying solutions for the development of distributed information-control systems of an organizational type. The structuring of the initial data is made, a formalized statement of the problem of justifying solutions for the development of distributed information-control systems of the organizational type is proposed. To solve this problem, a scientific-methodical approach is proposed, which includes methods for assessing the effectiveness of the solution and the individual indicators.
Investigation of wear of insulation of traction engines of locomotives in operation
Authors: Nefedov Roman , Loginova Elena
Published: April 2018

The article analyzes reliability of traction electric motors in operation. It is shown that the greatest number of failure falls on the winding of the armature. Investigation of the causes of increased wear of the armature winding insulation was carried out using the dynamic thermal model of the electric motor. The model is represented by 150 final elements and takes into account the conditions of thermal conductivity between the nodes and heat transfer to the cooling air. Verification of the model was carried out by comparison with the results of thermal tests of electric motors of the series HБ-406 and ЭД-118. The field of temperatures in the traction motor under various loads was investigated. It is shown that in stationary mode the temperature change along the armature winding can reach 60C. Modeling of thermal dynamic processes in the engine during its operation on the locomotive allowed to identify the most stressed nodes. It is shown that the resource of the electric motor is determined by the wear of the insulation of the frontal part of the armature winding on the side of the traction drive of the locomotive.
Optimizing UML Class Diagrams
Authors: Sergievskiy Maxim , Kirpichnikova Ksenia
Published: April 2018

Most of object-oriented development technologies rely on the use of the universal modeling language UML; class diagrams play a very important role in the design process play, used to build a software system model. Modern CASE tools, which are the basic tools for object-oriented development, can’t be used to optimize UML diagrams. In this manuscript we will explain how, based on the use of design patterns and anti-patterns, class diagrams could be verified and optimized. Certain transformations can be carried out automatically; in other cases, potential inefficiencies will be indicated and recommendations given. This study also discusses additional CASE tools for validating and optimizing of UML class diagrams. For this purpose, a plugin has been developed that analyzes an XMI file containing a description of class diagrams.