bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamic and microstructural study of Ti2AlNb oxides at 800 °C
Authors: Xiang J. M. , Mi G. B. , Qu S. J. , Huang X. , Chen Z. , Feng A. H. , Shen J. , Chen D. L.
Published: August 2018

The high-temperature structural applications of Ti2AlNb-based alloys, such as in jet engines and gas turbines, inevitably require oxidation resistance. The objective of this study is to seek fundamental insight into the oxidation behavior of a Ti2AlNb-based alloy via detailed microstructural characterization of oxide scale and scale/substrate interface after oxidation at 800 °C using X-ray diffraction (XRD), scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and transmission electron microscopy (TEM). The oxide scale exhibits a complex multi-layered structure consisting of (Al,Nb)-rich mixed oxide layer (I)/mixed oxide layer (II)/oxygen-rich layer (III)/substrate from the outside to inside, where the substrate is mainly composed of B2 and O-Ti2AlNb phases. High-resolution TEM examinations along with high-angle annular dark-field (HAADF) imaging reveal: (1) the co-existence of two types (α and δ) of Al2O3 oxides in the outer scale, (2) the presence of metastable oxide products of TiO and Nb2O5, (3) an amorphous region near the scale/substrate interface including the formation of AlNb2, and (4) O-Ti2AlNb phase oxidized to form Nb2O5, TiO2 and Al2O3.
Droplet microfluidics in thermoplastics: device fabrication, droplet generation, and content manipulation using integrated electric and magnetic fields
Authors: Sahore Vishal , Doonan Steven R. , Bailey Ryan C.
Published: August 2018

Droplet microfluidic devices with integrated operations including droplet generation, electrical injection, and magnetic splitting were manufactured in thermoplastics.
Studies of surface of metal nanoparticles in a flowing liquid with XPS
Authors: Nguyen Luan , Tao Paul (Pengcheng) , Liu Huimin , Al-Hada Mohamed , Amati Matteo , Sezen Hikmet , Tang Yu , Gregoratti Luca , Tao Franklin (Feng)
Published: August 2018

Surface of metal catalyst nanoparticles in a flowing liquid was characterized with XPS.
Effect of surface overlayer in enhancing the photoelectrochemical water oxidation of in situ grown one-dimensional spinel zinc ferrite nanorods directly onto the substrate
Authors: Sahu Tushar Kanta , Shah Adit Kumar , Gogoi Gaurangi , Patra Anindya Sundar , Ansari Mohammad Shaad , Qureshi Mohammad
Published: August 2018

Overlayer passivation minimizes surface defects and arrests the back transfer of electrons for an enhanced charge extraction.
Janus porous membrane with conical nanoneedle channel for rapid unidirectional water transport
Authors: Wang Zhecun , Li Yonggang , Li Shenghai , Guo Jing , Zhang Suobo
Published: August 2018

The nanoneedle-pierced nanowire Janus porous membrane possesses a transport channel that can enhance rapid unidirectional water transport.
Reduction of a platinum(iv) prodrug model by sulfur containing biological reductants: computational mechanistic elucidation
Authors: Chipman Antony , Yates Brian F. , Canty Allan J. , Ariafard Alireza
Published: August 2018

In order for the usual l-Cys zwitterion to reduce PtIV, it is first required to tautomerise into its unusual form.
Confinement of Fe–Al-PMOF catalytic sites favours the formation of pyrazoline from ethyl diazoacetate with an unusual sharp increase of selectivity upon recycling
Authors: Abeykoon Brian , Devic Thomas , Grenèche Jean-Marc , Fateeva Alexandra , Sorokin Alexander B.
Published: August 2018

Catalysis inside a porphyrinic MOF resulted in the formation of pyrazoline from ethyl diazoacetate which was not observed in the presence of a homogeneous iron porphyrin.
A stable polyoxometalate-based porous coordination polymer with high proton conductivity
Authors: Luo Yu-Hui , Yi Li-Qiang , Lu Jia-Ni , Dong Long-Zhang , Lan Ya-Qian
Published: August 2018

A new porous coordination polymer (1) has been prepared by a hydrothermal method. The supramolecular framework of 1 is stable in aqueous solutions with pH ranging from 1 to 13 and boiling solvents, such as water, methanol and ethanol. The proton conductive properties of 1 are also studied.
Charge control of the formation of two neutral/cationic metal–organic frameworks based on neutral/cationic triangular clusters and isonicotinic acid: structure, gas adsorption and magnetism
Authors: Zhou Lei , Zhou Baolei , Cui Zheng , Qin Bowen , Zhang Xiaoying , Li Wenliang , Zhang Jingping
Published: August 2018

Two neutral/cationic frameworks based on triangular MnII3/CoII3 clusters are constructed using an SBU charge controlling strategy, and their gas adsorption performances are investigated.
Internal defects-oriented dissolution: controllable evolution of hollow ZSM-5 nano-structures
Authors: Xu Yingrui , Lai Weikun , Dong Yunyun , Chen Zhou , Yi Xiaodong , Fang Weiping
Published: August 2018

A hollow ZSM-5 nanostructure with a shell thickness of ca. 40 nm is successfully formed in 40 min via ammonia leaching under mild conditions.
Intersystem crossing rate dependent dual emission and phosphorescence from cyclometalated platinum complexes: a second order cumulant expansion based approach
Authors: Moitra Torsha , Alam Md Mehboob , Chakrabarti Swapan
Published: August 2018

Cumulant expansion technique has been used to unravel the microscopic origin of phosphorescence and dual emission from cyclometalated platinum complexes.
Effect of cobalt content on the electrochemical properties and structural stability of NCA type cathode materials
Authors: Ghatak Kamalika , Basu Swastik , Das Tridip , Sharma Vidushi , Kumar Hemant , Datta Dibakar
Published: August 2018

Computational design of environmentally benign low-cost, cathode materials with reduced cobalt concentration.
The bismuth tetramer Bi4: the ν3 key to experimental observation
Authors: Lahm Mitchell E. , Hoobler Preston R. , Turney Justin M. , Peterson Kirk A. , Schaefer Henry F.
Published: August 2018

The spectroscopic identification of Bi4 has been very elusive. Two constitutional Bi4 isomers of Td and C2v symmetry are investigated and each is found to be a local energetic minimum.
The effects of surface topography of nanostructure arrays on cell adhesion
Authors: Zhou Jing , Zhang Xiaowei , Sun Jizheng , Dang Zechun , Li Jinqi , Li Xinlei , Chen Tongsheng
Published: August 2018

The effects of geometry and surface density distribution of nanopillars on cell adhesion studied by a quantitative thermodynamic model showed that high (low) surface distribution density and large (small) radius result in the “Top” (“Bottom”) mode.
Explaining urokinase type plasminogen activator inhibition by amino-5-hydroxybenzimidazole and two naphthamidine-based compounds through quantum biochemistry
Authors: Solis-Calero Christian , Zanatta Geancarlo , Pessoa Claudia do Ó , Carvalho Hernandes F. , Freire Valder N.
Published: August 2018

Urokinase plasminogen activator (uPA) is a biomarker and therapeutic target for several cancer types whose inhibition has been shown to slow tumor growth and metastasis.
Catalytic activations of unstrained C–C bond involving organometallic intermediates
Authors: Song Feijie , Gou Ting , Wang Bi-Qin , Shi Zhang-Jie
Published: August 2018

In this review, the transition-metal-catalyzed C–C bond activation of relatively stable and unstrained molecules involving organometallic intermediates is discussed in detail.
Rational selection of Fe2V4O13 over FeVO4 as a preferred active site on Sb-promoted TiO2 for catalytic NOX reduction with NH3
Authors: Kim Jongsik , Kim Dong Ho , Kwon Dong Wook , Ha Heon Phil
Published: August 2018

Fe2V4O13 outperforms FeVO4 as an active site for NH3-SCR and resists SO2/ABS/Na poisons with the inclusion of an Sb promoter.
Effect of Ru on the activity of Co3O4 catalysts for chlorinated aromatics oxidation
Authors: Lao Yijie , Zhu Naxin , Jiang Xingxing , Zhao Jian , Dai Qiguang , Wang Xingyi
Published: August 2018

A Ru/Co3O4 catalyst with Ru–O–Co structure presented highly stable activity and selectivity in 1,2-DCB oxidation.
5-Amino-1H-1,2,4-triazole-3-carbohydrazide and its applications in the synthesis of energetic salts: a new strategy for constructing the nitrogen-rich cation based on the energetic moiety combination
Authors: Zhang Guojie , Chen Ya , Liao Longyu , Lu Huanchang , Zhang Zhenqi , Ma Qing , Yang Hongwei , Fan Guijuan
Published: August 2018

A new strategy for constructing a nitrogen-rich cation through energetic moiety (energetic “gene”) combination was presented and its derivatives were synthesized.
[Ln16] complexes (Ln = GdIII, DyIII): molecular analogues of natural minerals such as hydrotalcite
Authors: Richardson Paul , Hsu Ting-Jung , Kuo Che-Jung , Holmberg Rebecca J. , Gabidullin Bulat , Rouzières Mathieu , Clérac Rodolphe , Murugesu Muralee , Lin Po-Heng
Published: August 2018

Two new hexadecanuclear lanthanide complexes employing H2bsc ligand are crystallized in theR3̄ space group, which is unprecedented in a family of lanthanide complexes with such high nuclearity.
Characterization of proteins with Siaα2-3/6Gal-linked glycans from bovine milk and role of their glycans against influenza A virus
Authors: Yu Hanjie , Zhong Yaogang , Zhang Zhiwei , Liu Xiawei , Zhang Kun , Zhang Fan , Zhang Jing , Shu Jian , Ding Li , Chen Wentian , Du Haoqi , Zhang Chen , Wang Xiurong , Li Zheng
Published: August 2018

The bovine milk proteins have a wide range of functions, but the role of the attached glycans in their biological functions has not been fully understood yet.
7-Deacetyl-10-alkylthiocolchicine derivatives – new compounds with potent anticancer and fungicidal activity
Authors: Kurek Joanna , Kwaśniewska-Sip Patrycja , Myszkowski Krzysztof , Cofta Grzegorz , Murias Marek , Barczyński Piotr , Jasiewicz Beata , Kurczab Rafał
Published: August 2018

Cytotoxic and fungicidal activity of 7-deacetyl-10-alkylthiocolchicine derivatives.
Correlative analysis of metal organic framework structures through manifold learning of Hirshfeld surfaces
Authors: Shen Xiaozhou , Zhang Tianmu , Broderick Scott , Rajan Krishna
Published: August 2018

We demonstrate the use of non-linear manifold learning methods to map the connectivity and extent of similarity between diverse metal–organic framework (MOF) structures in terms of their surface areas by taking into account both crystallographic and electronic structure information.
Tailoring of carbon nanotubes for the adsorption of heavy metal ions: molecular dynamics and experimental investigations
Authors: Sahu P. , Singha Deb A. K. , Ali S. K. M. , Shenoy K. T. , Mohan S.
Published: August 2018

The present study explores the adsorption mechanism of Cd++/Hg++ with carboxyl (COOH), amine (CONH(CH2)2NH2) and sulfur (CONH(CH2)2SH) based CNTs, using molecular dynamics (MD) simulations.
Rational screening of biomineralisation peptides for colour-selected one-pot gold nanoparticle syntheses
Authors: Tanaka M. , Takahashi Y. , Roach L. , Critchley K. , Evans S. D. , Okochi M.
Published: August 2018

Biomineralisation peptides that facilitate the one-pot synthesis of gold nanoparticles (AuNPs) with selected optical properties, were screened using a coherent peptide-spotted array consisting of a AuNP binding peptide library.
Resonant energy transfer in a van der Waals stacked MoS2 – functionalized graphene quantum dot composite with ab initio validation
Authors: Roy Rajarshi , Thapa Ranjit , Biswas Shibsankar , Saha Subhajit , Ghorai Uttam Kumar , Sen Dipayan , Kumar E. Mathan , Kumar Gundam Sandeep , Mazumder Nilesh , Roy Dipayan , Chattopadhyay Kalyan Kumar
Published: August 2018

Non-radiative energy transfer analogous to 0D and 2D systems comprising of MoS2 sheet and GQDs.
Controlled synthesis of hollow C@TiO2@MoS2hierarchical nanospheres for high-performance lithium-ion batteries
Authors: Pei Jie , Geng Hongbo , Ang Edison Huixiang , Zhang Lingling , Cao Xueqin , Zheng Junwei , Gu Hongwei
Published: August 2018

The hollow three-layered hierarchical nanosphere delivered superior electrochemical ability including high specific capacity, cycling stability and rate performances.
trans-Hydroborationvs.1,2-reduction: divergent reactivity of ynones and ynoates in Lewis-base-catalyzed reactions with pinacolborane
Authors: Zi You , Schömberg Fritz , Seifert Fabian , Görls Helmar , Vilotijevic Ivan
Published: August 2018

In the presence of phosphine catalyst and pinacolborane, ynones undergo 1,2-reduction while ynoates undergotrans-hydroboration. Mechanistic insights into the two competing pathways lay grounds for control of selectivity in these processes.
Synthesis and biological activity of a CXCR4-targeting bis(cyclam) lipid
Authors: Peters Anna D. , McCallion Catriona , Booth Andrew , Adams Julie A. , Rees-Unwin Karen , Pluen Alain , Burthem John , Webb Simon J.
Published: August 2018

A bis(cyclam)-capped lipid, obtained through a short synthetic pathway, binds cell surface CXCR4 and prevents migration of chronic lymphocytic leukaemia cells.
Insights into N-heterocyclic carbene-catalyzed [3 + 4] annulation reactions of 2-bromoenals with N-Ts hydrazones
Authors: Shi Qianqian , Wang Yang , Wang Yanyan , Qu Ling-Bo , Qiao Yan , Wei Donghui
Published: August 2018

A DFT study toward N-heterocyclic carbene-catalyzed [3 + 4] annulation reactions of 2-bromoenals has been performed for the first time.
Hierarchical porous activated biochar derived from marine macroalgae wastes (Enteromorpha prolifera): facile synthesis and its application on Methylene Blue removal
Authors: Li Xiao-yu , Han Dong , Xie Jun-feng , Wang Zhen-bo , Gong Zhi-qiang , Li Bin
Published: August 2018

Enteromorpha prolifera-based activated biochar was synthesized by an oily sludge-assisted “one-step” carbonization and activation method for Methylene Blue removal.
First in situ vesicular self-assembly of ‘binols’ generated by a two-component aerobic oxidation reaction
Authors: Bag Braja G. , Ghorai Subrata , Panja Saikat K. , Dinda Shaishab K. , Paul Koushik
Published: August 2018

Binol derivatives, obtained by aerobic coupling of two 2-naphthol derivatives having H-bond donor–acceptor groups and appended alkyl chains, spontaneously self-assembled in situ yielding vesicular self-assemblies and gels.
Chemically stable ionic viologen-organic network: an efficient scavenger of toxic oxo-anions from water
Authors: Samanta Partha , Chandra Priyanshu , Dutta Subhajit , Desai Aamod V. , Ghosh Sujit K.
Published: August 2018

Dual capture of hazardous oxo-anions was demonstrated with a viologen based cationic organic network via an anion exchange process.
Conformation of intrazeolitic choline ions and the framework topology of zeolite hosts
Authors: Bae Juna , Hong Suk Bong
Published: August 2018

A close relationship between the conformation of choline and the structure type of zeolites crystallized using this organic species was found.
A DNA nanowire based localized catalytic hairpin assembly reaction for microRNA imaging in live cells
Authors: Wei Qiaomei , Huang Jin , Li Jing , Wang Jiaoli , Yang Xiaohai , Liu Jianbo , Wang Kemin
Published: August 2018

Here, we have developed a localized catalytic hairpin assembly (LCHA) strategy for intracellular miR-21 imaging by using DNA nanowires confining both hairpin probes in a compact space.
Photocatalytic hydrogen evolution driven by platinated CdS nanorods with a hexacyanidoruthenate redox mediator
Authors: Kitano Hirotsugu , Kobayashi Atsushi , Yoshida Masaki , Kato Masako
Published: August 2018

Photocatalytic H2 evolution driven by Pt-cocatalyst-loaded CdS nanorods with a hexacyanidometalate [M(CN)6]4− (M = Fe or Ru) redox mediator was investigated and the hole transfer ability of an in situ generated Prussian white analogue deposited on the CdS-NR surface was discussed.
Are elastic moduli of biological cells depth dependent or not? Another explanation using a contact mechanics model with surface tension
Authors: Ding Yue , Wang Jian , Xu Guang-Kui , Wang Gang-Feng
Published: August 2018

Contrary to the existing reports that the apparent elastic modulus of a cell depends strongly on the indent depth in many AFM indentation experiments, we present a contact model with surface effects, and show that the actual elastic modulus of cell materials could be independent of the indent depth if surface tension is taken into account.
Role of fingerprint-inspired relief structures in elastomeric slabs for detecting frictional differences arising from surface monolayers
Authors: Dhong Charles , Kayser Laure V. , Arroyo Ryan , Shin Andrew , Finn Mickey , Kleinschmidt Andrew T. , Lipomi Darren J.
Published: August 2018

Fingerprint-inspired relief structures increase differences in friction when sliding across hydrophobic and hydrophilic surfaces.
Nanoliter deposition on star-shaped hydrophilic–superhydrophobic patterned surfaces
Authors: Chang Bo , Kivinen Oskari , Pini Ivana , Levkin Pavel A. , Ras Robin H. A. , Zhou Quan
Published: August 2018

A nanoliter droplet is deposited on a star-shaped hydrophilic pattern by moving a large water droplet on the hydrophilic–superhydrophobic patterned surface.
Durable, flexible, superhydrophobic and blood-repelling surfaces for use in medical blood pumps
Authors: Li Zhe , Nguyen Ba Loc , Cheng Yi Chih , Xue Junmin , MacLaren Graeme , Yap Choon Hwai
Published: August 2018

A new sand-casting method for fabricating superhydrophobic materials gives highly durable, flexible, and blood-repelling surfaces useful for cardiovascular medical devices.
A cobalt-based polyoxometalate nanozyme with high peroxidase-mimicking activity at neutral pH for one-pot colorimetric analysis of glucose
Authors: He Yanfang , Li Xin , Xu Xuechao , Pan Jianming , Niu Xiangheng
Published: August 2018

A polyoxometalate (CoPW11O39) with high peroxidase-mimicking activity at physiological pH enables one-pot colorimetric analysis of glucose when coupled with GOx.
Highly efficient bipolar host materials towards solution-processable blue and green thermally activated delayed fluorescence organic light emitting diodes
Authors: Godumala Mallesham , Choi Suna , Kim Seong Keun , Kim Si Woo , Kwon Jang Hyuk , Cho Min Ju , Choi Dong Hoon
Published: August 2018

Simple structured bipolar host materials boosted the device performance of solution processable blue and green thermally activated delayed fluorescence organic light emitting diodes.
Glycans and glycosaminoglycans in neurobiology: key regulators of neuronal cell function and fate
Authors: Hayes Anthony J. , Melrose James
Published: August 2018

The aim of the present study was to examine the roles of l-fucose and the glycosaminoglycans (GAGs) keratan sulfate (KS) and chondroitin sulfate/dermatan sulfate (CS/DS) with selected functional molecules in neural tissues. Cell surface glycans and GAGs have evolved over millions of years to become cellular mediators which regulate fundamental aspects of cellular survival. The glycocalyx, which surrounds all cells, actuates responses to growth factors, cytokines and morphogens at the cellular boundary, silencing or activating downstream signaling pathways and gene expression. In this review, we have focused on interactions mediated by l-fucose, KS and CS/DS in the central and peripheral nervous systems. Fucose makes critical contributions in the area of molecular recognition and information transfer in the blood group substances, cytotoxic immunoglobulins, cell fate-mediated Notch-1 interactions, regulation of selectin-mediated neutrophil extravasation in innate immunity and CD-34-mediated new blood vessel development, and the targeting of neuroprogenitor cells to damaged neural tissue. Fucosylated glycoproteins regulate delivery of synaptic neurotransmitters and neural function. Neural KS proteoglycans (PGs) were examined in terms of cellular regulation and their interactive properties with neuroregulatory molecules. The paradoxical properties of CS/DS isomers decorating matrix and transmembrane PGs and the positive and negative regulatory cues they provide to neurons are also discussed.
LINC00473 promotes the Taxol resistance via miR-15a in colorectal cancer
Authors: Wang Lin , Zhang Xufeng , Sheng Li , Qiu Chun , Luo Rongcheng
Published: August 2018

Dysregulation of long non-coding RNAs (LncRNAs) participated into the initiation and progression of different diseases via direct regulation of proteins or indirect regulation of microRNA (miRNA)-target genes. LINC00473 is a novel carcinoma-related LncRNA and up-regulated in many cancers for tumor growth and metastasis, but its role in chemotherapy resistance is unclear. We here investigated the function of LINC00473 in colorectal cancer (CRC) in vitro and in vivo. The CRC tissues (n=20) and relative normal tissues were collected and found that LINC00473 was overexpressed in CRC tissues when compared with which in normal tissues. Highly expressed LINC00473 predicted large tumor size, high TNM stage of CRC patients. Interestingly, the tumor suppressor miR-15a was down-regulated and negatively correlated with LINC00473 levels in CRC. LINC00473 harbored the binding sites for miR-15a and reduced its availability in CRC cell line HCT116. Knockdown of LINC00473 elevated the expression of miR-15a. Moreover, in the Taxol-resistant HCT116, the LINC00473 level was further increased than that in HCT116. Knockdown of LINC00473 restored the Taxol-induced cytotoxicity, inhibited the cell vitality, colony formation and induced apoptosis, impaired the ability of migration or invasion, but these effects could be abrogated by the inhibition of miR-15a. Mechanistically, the BCL-2-related anti-apoptosis pathway was activated and the multidrug-resistant (MDR) genes LRP, MDR1 were up-regulated by LINC00473. Furthermore, inhibition of LINC00473 in vivo could overcome the Taxol resistance of CRC cells, could recover the expression of tumor suppressor miR-15a and chemotherapy-induced tumor regression, indicating that LINC00473 functioned as oncogene in CRC via miR-15a.
Ultrasound microbubbles mediated miR-let-7b delivery into CD133+ ovarian cancer stem cells
Authors: Yang Chaopin , Li Bingcheng , Yu Jinsui , Yang Feng , Cai Kuan , Chen Zhiyi
Published: August 2018

Ovarian cancer stem cells (OCSCs) are considered the reason for ovarian cancer’s emergence and recurrence. Ultrasound-targetted microbubble destruction (UTMD), a non-vial, safe, and promising delivery method for miRNA, is reported to transfect cancer stem cells (CSCs). In the present study, we investigated to transfect miR-let-7b into OCSCs using UTMD. The CD133+ OCSCs, accounted for only 0.1% of ovarian cancer cell line A2780, were separated by flow cytometry, and the CSC characteristics of CD133+ OCSCs have been proved by spheroid formation and self-renewal assay. The miR-let-7b transfection efficiency using UTMD was significantly higher than other groups except lipofectamine group through flow cytometry. The cell viability of all groups decreased after transfection, and the late apoptosis rate of CD133+ OCSCs after miR-let7b transfection induced by UTMD was 2.62%, while that of non-treated cells was 0.02% (P<0.05). Furthermore, the Western blot results demonstrated that the stem cells surface marker of CD133 expression has decreased. Therefore, our results indicated that UTMD-mediated miRNA delivery could be a promising platform for CSC therapy.
Energy efficient power allocation approach to asymmetric analogue network coding with rate‐dependent circuit power
Authors: Zheng Fangyuan , Li Jing , Yu Xiangbin , Ge Jianhua
Published: August 2018

Energy efficiency (EE) plays an indispensable role in the battery constrained systems. In this study, the EE optimisation problem for asymmetric analogue network coding (ANC) protocol is analysed in a two‐way relaying network, where the two sources have different transmission rate requirements. A generalised power consumption model is applied consisting of not only the transmit power and fixed circuit power, but also the most general rate‐dependent dynamic circuit power, with which a power allocation problem is formulated to achieve the maximal EE constrained by the rate requirements as well as the total transmit power budget. By exploiting the two‐layer optimisation method and non‐linear fractional programming theorem, the original EE maximisation problem is solved in an efficient way. Specially, when the rate‐dependent circuit power is modelled as the linear function of transmission rate, a closed‐form solution is obtained. Through simulations, the proposed power allocation algorithm is verified and the impacts of some system parameters such as relay location, transmit power and transmission rate asymmetry are also provided to gain useful insights, which facilitates the energy‐efficient design for the practical asymmetric ANC protocol.
Optimisation of antenna arrays installed on non‐conductive unmanned aerial vehicle
Authors: Yoshimoto Eduardo , Schlosser Edson Rodrigo , Heckler Marcos Vinício Thomas
Published: August 2018

This study presents the study of beamforming capabilities of arrays installed on a non‐conductive unmanned aerial vehicle (UAV). The main purposes of this study are the application of a beamforming algorithm by including the airframe in the optimisations and the study of simplifications of the aircraft model, so as to allow performing full‐wave simulations, even though the UAV is much larger than the operating wavelength. To validate the simplified electromagnetic model, antenna arrays have been designed and installed onto the UAV. Radiation pattern measurements demonstrate that the proposed simplifications yielded very good radiation pattern predictions and can be used as guidelines for simulation of other kinds of non‐conductive aircrafts.
Simultaneous reinforcing and toughening of PTFE/glass fabric composites based on polyaniline/carbon microcapsule network
Authors: Zhang Bin , Jiang Yujie
Published: August 2018

Through designing dispersed well and assembled orderly structures, a series of polyaniline (PANI)/carbon (CB) microcapsules were successfully synthesised. In the formation of the PANI/CB microcapsules, PANI/CB microcapsules were in good dispersion and ordered state, which resulted in exceptional mechanical properties and electrical conductivity for polytetrafluoroethylene (PTFE)/glass fabric (GF) composites. Here, the authors have developed the PTFE/GF composites that have not only tensile strength up to 21.5 MPa, but also toughness up to 17.5 MJ/m3, and surface resistivity up to 5 × 108 Ω cm, it is difficult to obtain by other methods. This was achieved by only assembled orderly and ordered arrangement for forming highly ordered network structures in an oriented direction, without introducing a third component or chemical cross‐linker as in interfacial systems. More importantly, they believe that the design principles and processing strategies, which can be applied to other material systems to develop superconducting, strong and flexible materials.
The hot white dwarf in the peculiar binary nucleus of the planetary nebula EGB 6
Authors: Werner K. , Rauch T. , Kruk J. W.
Published: August 2018

EGB 6 is an extended, faint old planetary nebula (PN) with an enigmatic nucleus. The central star (PG 0950+139) is a hot DAOZ-type white dwarf (WD). An unresolved, compact emission knot was discovered to be located 0.′′166 away from the WD and it was shown to be centered around a dust-enshrouded low-luminosity star. It was argued that the dust disk and evaporated gas (photoionized by the hot WD) around the companion are remnants of a disk formed by wind material captured from the WD progenitor when it was an asymptotic giant branch (AGB) star. In this paper, we assess the hot WD to determine its atmospheric and stellar parameters. We performed a model-atmosphere analysis of ultraviolet (UV) and optical spectra. We found Teff = 105 000 ± 5000 K, log g = 7.4 ± 0.4, and a solar helium abundance (He = 0.25 ± 0.1, mass fraction). We measured the abundances of ten more species (C, N, O, F, Si, P, S, Ar, Fe, Ni) and found essentially solar abundance values, indicating that radiation-driven wind mass-loss, with a theoretical rate of log(Ṁ/M⊙/yr) = −11.0−0.8+1.1, prevents the gravitational separation of elements in the photosphere. The WD has a mass of M/M⊙ = 0.58−0.04+0.12 and its post-AGB age (log(tevol/yr = 360−0.09+1.26)) is compatible with the PN kinematical age of log(tPN/yr = 4.2). In addition, we examined the UV spectrum of the hot nucleus of a similar object with a compact emission region, Tol 26 (PN G298.0+34.8), and found that it is a slightly cooler DAOZ WD (Teff ≈ 85 000 K), but this WD shows signatures of gravitational settling of heavy elements.
The Gaia DR2 view of the Gamma Velorum cluster: resolving the 6D structure
Authors: Franciosini E. , Sacco G. G. , Jeffries R. D. , Damiani F. , Roccatagliata V. , Fedele D. , Randich S.
Published: August 2018

Gaia-ESO Survey observations of the young Gamma Velorum cluster led to the discovery of two kinematically distinct populations, Gamma Vel A and B, respectively, with population B extended over several square degrees in the Vela OB2 association. Using the Gaia DR2 data for a sample of high-probability cluster members, we find that the two populations differ not only kinematically, but are also located at different distances along the line of sight, with the main cluster Gamma Vel A being closer. A combined fit of the two populations yields ϖA = 2.895 ± 0.008 mas and ϖB = 2.608 ± 0.017 mas, with intrinsic dispersions of 0.038 ± 0.011 mas and 0.091 ± 0.016 mas, respectively. This translates into distances of 345.4+1.0+12.4−1.0−11.5 pc and 383.4+2.5+15.3−2.5−14.2 pc, respectively, showing that Gamma Vel A is closer than Gamma Vel B by ~38 pc. We find that the two clusters are nearly coeval, and that Gamma Vel B is expanding. We suggest that Gamma Vel A and B are two independent clusters located along the same line of sight.
Designing metrics; the delta metric for curves
Authors: Mennucci Andrea C.G.
Published: August 2018

In the first part, we revisit some key notions. Let M be a Riemannian manifold. Let G be a group acting on M. We discuss the relationship between the quotient M∕G, “horizontality” and “normalization”. We discuss the distinction between path-wise invariance and point-wise invariance and how the former positively impacts the design of metrics, in particular for the mathematical and numerical treatment of geodesics. We then discuss a strategy to design metrics with desired properties.

In the second part, we prepare methods to normalize some standard group actions on the curve; we design a simple differential operator, called the delta operator, and compare it to the usual differential operators used in defining Riemannian metrics for curves.

In the third part we design two examples of Riemannian metrics in the space of planar curves. These metrics are based on the “delta” operator; they are “modular”, they are composed of different terms, each associated to a group action. These are “strong” metrics, that is, smooth metrics on the space of curves, that is defined as a differentiable manifolds, modeled on the standard Sobolev space H2. These metrics enjoy many important properties, including: metric completeness, geodesic completeness, existence of minimal length geodesics. These metrics properly project on the space of curves up to parameterization; the quotient space again enjoys the above properties.
The “man-technology-environment” system in the management of transport service of construction industry
Authors: Kazarian Ruben
Published: August 2018

In all countries, transport is considered as the basis for ensuring economic, social, military, environmental and other types of national security. It is provided more than 200 billion dollars in the US, about 200 billion dollars in Japan, more than 100 billion euros in Germany on the development of transport system. In Russia, for these purposes, is spent 14-15 times less. The purpose of environmental security's transportation ensuring - protection of life and health of people, the environment, cargo and vehicles, the sustainability of transport communications and transport infrastructure in normal conditions, in emergency situations and in wartime. Man, in the process of knowing the surrounding material world, forms “speculative” (ideal) ideas about how this world is arranged and how it functions. The basis of such knowledge is intuitive or conscious modeling. The initial level of visual modeling is the multipoint representation of the object of study, so: any phenomenon, object, process, object, definition, and other elements of the conceptual layer of consciousness are put in correspondence with the “point”. The further procedure of visual modeling involves the identification of all the points involved and the interrelations between them (the “logician”), this procedure will provide insight into infographic models of anthropotechnology management in the conditions of modern economic fundamentals and trends in the development of a market economy for the application of anthropotechnical management infographic models. Certification of manual labor's mechanization and transportation of construction cargo and structures (СMIT) - is one of the important construction service packages.
Groundwater pollution by longstanding cemetery and solutions for urban cemetery planning in Ho Chi Minh City – from reality to solutions
Authors: Nguyen Trang , Nguyen Luan
Published: August 2018

The fast speed of urbanization in Vietnamese big city like Ho Chi Minh City (HCMC) has pushed a large number of longstanding cemeteries deep into the inner city. It consequently leads to the gradual loss of urban aesthetics and negative impacts on urban environment. Choosing location for cemetery in modernized city is currently realized as one of serious and difficult issues in terms of urban space planning. Also, it is an urgent concern of environmental problem. The result of traditional inhumation, for example, has led to an uncontrollable wide underground spread of polluted leachates exuding from human body corpses in longstanding cemetery and surrounding areas. In order to improve the effectiveness of urban planning, together with environmental and cemetery management and groundwater conservation responsibilities on site and surroundings of a cemetery, assessment of the groundwater pollution and simulation of the contaminant transport potential are compulsory. This study aims to conduct both tasks into Binh Hung Hoa (Tan Phu district) and Vinh Nghiem (district 12) cemeteries, the two typical longstanding cemeteries in HCMC.
Legal regulation of environmental protection, management of natural resources, and environmental safety in construction sector
Authors: Voskresenskaya Elena , Vorona-Slivinskaya Lybov , Panov Sergey
Published: August 2018

The current state of the environment in general, including the construction sector, is experiencing an excessive technogenic impact. Therefore, the authors consider the process of ecologization as an important condition for ensuring the sustainability of the development of construction production. The paper concludes that innovative approaches in the development and implementation of environmental protection programs for construction based on fundamentally new methods of natural resource use, resource saving, transition to new technologies for the production of building materials and structures determine the main directions for improving technological and other processes in this area. The authors determined that the increase in the efficiency of environmental measures in construction sector depends mainly on the location of construction sites and the specific feature of this production. In this regard, at each level of the construction process, there is a danger of pollution of the natural environment, which entails negative consequences of anthropogenic nature. Developing and introducing organizational and economic methods of innovative nature protection activities into the construction production aimed at improving the environmental safety of construction process and upgrading the quality of the surrounding environment on adjacent territories to construction sites is an urgent task.
New classification of foaming agents for fire extinguishing
Authors: Degaev Evgeniy
Published: August 2018

Extinguishing fires of petroleum products during emergency spill at industrial facilities of capital construction, transport, gas stations and the destruction of oil tanks is most effective when using foamers. Classification of foaming agents intended for extinguishing of fires of oil products, which is based on the structure of spreading coefficient of water foam-forming solution over hydrocarbon surface is presented. Results of experimental studies using various foaming agents with different structure of spreading coefficient are given. It is determined which of homologs of a number of sodium primary alkylsulfates differ in foaming capacity and fire extinguishing efficiency. It is revealed that decrease of interfacial tension value leads to reduction of extinguishing time of a heptane flame.
Innovation technologies in Green Roof systems
Authors: Korol Svetlana , Shushunova Natalia , Shushunova Tatiana
Published: August 2018

This article analyses both traditional green roof structures and innovative modular green roof systems. Project design and construction of new buildings with smart green technologies is a main trend in the process of mitigation climate change, because in most European countries the construction sector consumes approximately one third of the total energy used. Despite a wide range of proposed initiatives in the construction sector measures mainly focused on energy-saving technologies, alternative energy resources and methods to bring multiple economic profit and great environment benefits.
Bamboo - the eco-friendly material – one of the material solutions of the sustainable interior design in Viet Nam
Authors: Thi Bich Vân Nguyen
Published: August 2018

Today, sustainable architecture is not just a trend but an architectural style that has become a "revolution." The lack of interior focus in the process of sustainable architectural development has created a gap between architects, interior designers, clients, or those wishing to live in a responsible construction environment. Responsibility for nature and people. Although environmentally sustainable interior design (ESID) has become a major issue in interior design practice, the frequency with which interior designers make sustainable choices in real practice is still limited, especially when choosing materials. Among these materials, this study wants to emphasize bamboo materials in sustainable furniture design in Vietnam. Indeed, this is a common material in sustainable design in Vietnam, and there are also many studies on the use of bamboo materials in housing construction. However, the paper raises main issues: role of bamboo material in interior design in Vietnam, the better access to a basic knowledge of sustainability, and more up-to-date information about sustainable materials will play a critical role in promoting sustainable practicing in Viet Nam.
Constructional sustainability impact on the comfort of living environment
Authors: Sorokin Andrey , Larionova Yulia , Tolstykh Elena
Published: August 2018

Modern construction is accompanied by the active appearance of various technical, technological and other solutions. In pursuit of efficiency growth, various required parameters do not always correspond with the sustainability standards of the construction unit and in prospect cause a large negative effect for real estate users. The paper exposes an analysis of urban planning solutions from the point of comfort of the living environment, as well as a proposal on the methodology for calculating the complex indicator of a comfortable living environment. In addition, the modern scientific data on ecology is analyzed, a particular attention is paid to environmental monitoring in construction. The comfort indicators of the urban environment are structured in order to determine actual trends and needs for the optimal development of urban complexes.
Building a system for efficient use of resources in construction
Authors: Kozhevnikov Dmitry
Published: August 2018

The article studies various aspects of building a system for efficient use of resources in construction and develops a model for estimating resource flows in construction. It has been proved that construction work cannot be organized without proper material resources: raw materials, construction materials, fuel, energy, pre-fabricated products, etc. It has been determined that the model for estimating the resource flows in construction should take into account the volume of resource consumption, i.e. resource consumption per unit of specific demand for their consumption, taking into account the total amount of resources consumed by a construction firm, and their cost.
Features of calculations of the limit cost of high-rise constructions for housing and civil purposes with the use of consolidated standards
Authors: Ovsiannikov Andrei , Vorotyntseva Anna , Bolgov Vladimir
Published: August 2018

When determining the cost of capital construction objects, for purposes of pre-investment workings out and purposes of initial maximum initial price determination on tenders, construction price norms are used (CPNs). Modern CPNs are not designed to determine the value of high-rise buildings. It is necessary to adapt modern CPNs to get opportunity for the possibility to take into account special cost factors in determining the cost of high-rise buildings. The main ways can be: selection of new representative objects or application of additional correction factors.
The impact of energy-corrective measures at the design stage of construction projects
Authors: Korol Oleg
Published: August 2018

The rational energy consumption during the construction period is formed at the stage of organizational and technological design by a system of energy-correcting measures. The implementation of the complex of measures allows balancing energy consumption and ensuring a high-quality production process with all types of energy users, infrastructural elements of the construction site, and the organization of the operating mode of machines, mechanisms, and labor resources. The object of the study is a complex of developed energy-correcting measures in the organizational and technological design of construction projects. Research methods include multi-criteria analysis based on expert assessments applied to the developed set of energy-correcting measures for the main types of energy consumers in the organizational and technological modeling of the construction process. This analysis of fuel and energy resources consumption by enlarged consumer groups – machines, mechanisms, and equipment; technological processes and infrastructure of the construction site. Varying the time parameters of beginning of the construction works has a significant influence on the consumption of fuel and energy resources for certain groups of consumers. The results of scientific research are presented in the form of a variable complex of energy-correcting measures that allow to flexibly regulating energy consumption in the process of organizational and technological design of buildings.
Human Capital as a Basis for the Development of a Modern University
Authors: Golikov Aleksey , Kudaka Marina , Sergeev Vitaly , Sergeeva Irina , Tishin Platon , Tumakova Elena
Published: August 2018

Modern world trends have a significant impact on the university and human capital as an important part of the university. From our point of view, an active process is currently underway and namely it is transition from a university-function, to a university-subject of change. Only a small amount of the university's academic staff have the necessary competences for the implementation of full-life projects and the ability to work in a project team, this is primarily due to the lack of soft-skills. In this regard, to assess the capitalization of the human resource in the university community, in this article propose to introduce the concept of capitalization index (CI), which takes into account the diversity of activities of the university staff (scientific work, teaching, interaction with students, etc.) and determines its effectiveness. This system allows us to supplement it with various components, depending on the trends of development of the university, and also shift the focus from one area to another (priority factor) and strengthen the significance of a certain type of activity (quality factor).
Differentiation of wholesale prices for organic agricultural products
Authors: Yazev Grigory , Ryabova Taisiya , Zhenzhebir Vyacheslav
Published: August 2018

The urgency of the study is based on the fact that for a long time, there have been disputes in the scientific world about methods and models for determining the value of prices, on the basis of which the economic accessibility of various kinds of organic products depends. It is especially important to resolve the issue of setting prices for agricultural cooperatives, which have developed in the Russian market economy. The purpose of the study is to find a method for setting wholesale prices for organic products, the consumer demand for which has increased over the past two years and exceeded the level established by the Russian Academy of Medical Sciences. The following methods were used in the study: analytical, systemic, comparative, economic and mathematical, hypothetical, questionnaires, etc. The study conducted an excursus into the field of basic theories of determining prices created by scientists, on the basis of which it was concluded that there is no single approach to determining their values. The prices for organic agricultural products sold by large retailers are analyzed. Using a sample of closest prices of various agricultural producers, average wholesale prices for agricultural products were determined for three regions of the Central Federal District. As a result of the conducted study, the wholesale price for organic agricultural products (on the example of potatoes) purchased by wholesale distribution centers providing the needs of the population of Moscow and the Moscow region was substantiated.
Managing Neurophobia: How Can We Meet the Current and Future Needs of Our Students?
Authors: Józefowicz Ralph , Tarolli Christopher
Published: August 2018

Neurophobia was defined more than two decades ago as a “fear of neural sciences and clinical neurology” among medical students. Despite recognition of the ailment and research into underlying causes, medical students and neurological educators continue to struggle with neurophobia today. At our institution, we have been successful at mitigating neurophobia. Here, we define the underlying drivers of neurophobia, based on the relevant literature. We also describe our strategies for battling neurophobia in the preclinical and clinical years by (1) establishing a continuum of neurological education; (2) incorporating active and observed learning throughout neurological education; and (3) enhancing socialization into neurology. Finally, we consider the future of neurological education, describe strategies for educators to mitigate neurophobia, and propose a call to action to further understand neurophobia. Neurophobia is not inevitable; effective curricula and dedicated faculty can engage students and ensure students better understand and enjoy their neurological education.