bluuebunny/crossref_metadata_2025 huggingface dataset:
Molybdenum Disulfide Surface Modification of Ultrafine-Grained Titanium for Enhanced Cellular Growth and Antibacterial Effect
Authors: Shin Myeong Hwan , Baek Seung Mi , Polyakov Alexander V. , Semenova Irina P. , Valiev Ruslan Z. , Hwang Woon-bong , Hahn Sei Kwang , Kim Hyoung Seop
Published: June 2018

The commercially pure Ti (CP Ti) and equal-channel angular pressing (ECAP) processed Ti can contribute to the downsizing of medical devices with their superior mechanical properties and negligible toxicity. However, the ECAP-processed pure Ti has the risk of bacterial infection. Here, the coarse- and ultrafine-grained Ti substrates were surface-modified with molybdenum disulfide (MoS2) to improve the cell proliferation and growth with antibacterial effect for further dental applications. According to in vitro tests using the pre-osteoblast of MC3T3-E1 cell and a bacterial model of Escherichia coli (E. coli), MoS2 nanoflakes coated and ECAP-processed Ti substrates showed a significant increase in surface energy and singlet oxygen generation resulting in improved cell attachment and antibacterial effect. In addition, we confirmed the stability of the surface modified Ti substrates in a physiological solution and an artificial bone. Taken together, MoS2 modified and ECAP-processed Ti substrates might be successfully harnessed for various dental applications.
Autophagy defects and related genetic variations in renal cell carcinoma with eosinophilic cytoplasmic inclusions
Authors: Yu Zhou , Ma Jing , Li Xia , Liu Yixiong , Li Mingyang , Wang Lu , Zhao Ming , He Huiying , Zhang Yifen , Rao Qiu , Zhao Danhui , Wang Yingmei , Fan Linni , Li Peifeng , Liu Yang , Liu Fang , Zhang Feng , Ye Jing , Yan Qingguo , Guo Shuangping , Wang Zhe
Published: June 2018

The relationship between autophagy and tumour is well studied, but tumour cell morphological changes associated with autophagy defects are rarely reported, especially in renal cell carcinoma (RCC). We collected 10 renal tumour samples with characteristic eosinophilic cytoplasmic inclusions (ECIs) and found that the ECIs were majorly composed of sequestosome 1/P62, neighbor of BRCA1 gene 1 (NBR1), PEX14, and CATALASE1 (CAT1). Further, transmission electron microscopy analysis revealed that ECIs were aggregates of proteinaceous material and peroxisomes. These results confirmed that ECIs in RCCs were the products of autophagy defects. The presence of ECIs was correlated with high Fuhrman grade components of RCCs. Whole-exome sequencing (WES) and Sanger sequencing confirmed that tumours with ECIs showed somatic mutations or high frequency of genetic variations in autophagy-related (ATG) genes, such as ATG7, ATG5, and ATG10. These results indicate that nucleotide changes in ATG genes are associated with autophagy defect, ECI formation, and even tumour grade in RCCs.
Black-headed gulls synchronise their activity with their nearest neighbours
Authors: Evans Madeleine H. R. , Lihou Katie L. , Rands Sean A.
Published: June 2018

Animals in groups can benefit from synchronising their behaviour, where multiple individuals conduct similar activities at the same moment in time. Previous studies have demonstrated that some species show synchronisation of vigilance behaviour, but have not explored the mechanism driving this behaviour. Synchronisation could be driven by animals copying their closest neighbours, which would mean that close proximity should lead to increased synchronisation. We simultaneously observed the behaviour of multiple individual black-headed gulls (Chroicocephalus ridibundus) within resting groups, and compared the activity of a focal individual with its two closest neighbours and a randomly selected control individual. Focal individuals were more likely to be synchronised with their closest neighbour. Synchronisation became less likely if individuals were not the closest neighbour. This suggests that synchronisation seen within groups is dependent upon the spatial positions of its members, and black-headed gulls pay more attention to their closest neighbours.
Resistance to CymMV and ORSV in artificial microRNA transgenic Nicotiana benthamiana plants
Authors: Petchthai Udomporn , Yee Celestine Shi Le , Wong Sek-Man
Published: June 2018

Transgenic plants expressing artificial microRNAs (amiRNAs) have been shown to confer specific resistance to corresponding viruses. Here, we generated Nicotiana benthamiana transgenic lines containing Oryza sativa miR528 as backbone, expressing amiRNAs targeting RNA-dependent RNA polymerase (RdRp) gene of Cymbidium mosaic virus (CymMV) and Odontoglossum ringspot virus (ORSV). The amiRNA transgenic lines could express amiR-CymMV and confer high percentage resistance to CymMV, while lack of detectable level of amiR-ORSV expression in amiR-ORSV transgenic N. benthamiana plants led to weak resistance to ORSV infection. In this project, we provide the first report of CymMV-resistant transgenic N. benthamiana plants based on amiRNA strategy. We believe that this amiRNA approach can be extended to generate CymMV-resistant transgenic orchids.
Time-lapse imagery and volunteer classifications from the Zooniverse Penguin Watch project
Authors: Jones Fiona M. , Allen Campbell , Arteta Carlos , Arthur Joan , Black Caitlin , Emmerson Louise M. , Freeman Robin , Hines Greg , Lintott Chris J. , Macháčková Zuzana , Miller Grant , Simpson Rob , Southwell Colin , Torsey Holly R. , Zisserman Andrew , Hart Tom
Published: June 2018

Automated time-lapse cameras can facilitate reliable and consistent monitoring of wild animal populations. In this report, data from 73,802 images taken by 15 different Penguin Watch cameras are presented, capturing the dynamics of penguin (Spheniscidae; Pygoscelis spp.) breeding colonies across the Antarctic Peninsula, South Shetland Islands and South Georgia (03/2012 to 01/2014). Citizen science provides a means by which large and otherwise intractable photographic data sets can be processed, and here we describe the methodology associated with the Zooniverse project Penguin Watch, and provide validation of the method. We present anonymised volunteer classifications for the 73,802 images, alongside the associated metadata (including date/time and temperature information). In addition to the benefits for ecological monitoring, such as easy detection of animal attendance patterns, this type of annotated time-lapse imagery can be employed as a training tool for machine learning algorithms to automate data extraction, and we encourage the use of this data set for computer vision development.
Chemical separation and MC-ICPMS analysis of U, Th, Pa and Ra isotope ratios of carbonates
Authors: Obert J. Christina , Scholz Denis , Lippold Jörg , Felis Thomas , Jochum Klaus Peter , Andreae Meinrat O.
Published: June 2018

Ion exchange chemistry and MC-ICPMS measurements of U, Th, Pa and Ra isotope ratios from the same carbonate sample.
Fluorescence signal-to-noise optimisation for real-time PCR using universal reporter oligonucleotides
Authors: Lehnert Michael , Kipf Elena , Schlenker Franziska , Borst Nadine , Zengerle Roland , von Stetten Felix
Published: June 2018

In this study we optimised the fluorescence signal generation of contact quenched universal reporter oligonucleotides.
Use of 3D printing and modular microfluidics to integrate cell culture, injections and electrochemical analysis
Authors: Munshi Akash S. , Chen Chengpeng , Townsend Alexandra D. , Martin R. Scott
Published: June 2018

Here we show that separate modules fabricated using 3D printing technology can be easily assembled to quantitate the amount of nitric oxide released from endothelial cells following ATP stimulation.
Self-doped colloidal semiconductor nanocrystals with intraband transitions in steady state
Authors: Kim Jihye , Choi Dongsun , Jeong Kwang Seob
Published: June 2018

The tunable bandgap energy has been recognized as a prominent feature of the colloidal semiconductor nanocrystal, also called the colloidal quantum dot (CQD).
Phenylene-bridged cross-conjugated 1,2,3-trisilacyclopentadienes
Authors: Zhao Hui , Klemmer Lukas , Cowley Michael J. , Majumdar Moumita , Huch Volker , Zimmer Michael , Scheschkewitz David
Published: June 2018

Reaction of a cyclotrisilene, c-Si3R4(R = iPr3C6H2), with 1,4-diethynyl benzene results in the cross-conjugated bridging of two 1,2,3-trisilacyclopentadiene moieties bypara-phenylene.
Room temperature carbon monoxide oxidation based on two-dimensional gold-loaded mesoporous iron oxide nanoflakes
Authors: Kaneti Yusuf Valentino , Tanaka Shunsuke , Jikihara Yohei , Nakayama Tsuruo , Bando Yoshio , Haruta Masatake , Hossain Md. Shahriar A. , Golberg Dmitri , Yamauchi Yusuke
Published: June 2018

A room-temperature catalyst for carbon monoxide oxidation based on gold-loaded mesoporous maghemite nanoflakes has been developed.
A versatile strategy for ultrathin SnS2 nanosheets confined in a N-doped graphene sheet composite for high performance lithium and sodium-ion batteries
Authors: Tao Shi , Wu Dajun , Chen Shuangming , Qian Bin , Chu Wangsheng , Song Li
Published: June 2018

Ultrathin SnS2 nanosheets confined in N-doped graphene sheets composite is synthesized by using a simple thermal decomposition method and as excellent electrodes for lithium/sodium-ion batteries.
High-capacitance Ti3C2TxMXene obtained by etching submicron Ti3AlC2grains grown in molten salt
Authors: Cui Cong , Hu Minmin , Zhang Chao , Cheng Renfei , Yang Jinxing , Wang Xiaohui
Published: June 2018

The capacitance of small-sized Ti3C2TxMXene particulates is more than twice that of the large ones.
Photoredox-promoted alkyl radical addition/semipinacol rearrangement sequences of alkenylcyclobutanols: rapid access to cyclic ketones
Authors: Yao Sheng , Zhang Kai , Zhou Quan-Quan , Zhao Yu , Shi De-Qing , Xiao Wen-Jing
Published: June 2018

Two photo-catalytic tandem alkyl radical addition/semipinacol rearrangement reactions of cycloalkanol-substituted styrenes with N-acyloxyphthalimides and O-acyl oximes have been documented.
Chemiluminescence of black phosphorus quantum dots induced by hypochlorite and peroxide
Authors: Liu Houjing , Sun Mingxia , Su Yingying , Deng Dongyan , Hu Jianyu , Lv Yi
Published: June 2018

For the first time, black phosphorus quantum dots (BP QDs) were found to show chemiluminescence (CL) properties in the presence of hydrogen peroxide (H2O2) and hypochlorite (ClO−).
Secondary dialkylammonium salt/crown ether [2]pseudorotaxanes as nanostructured platforms for proton transport
Authors: Li Lijie , He Lipeng , Wang Binghua , Ge Peng , Jing Lei , Liu Haomin , Gong Chenliang , Zhang Bin , Zhang Junhu , Bu Weifeng
Published: June 2018

Secondary dialkylammonium salt/crown ether [2]pseudorotaxanes can be confined into two-dimensional nanochannels, leading to remarkable enhancements and rational control of proton conductivity.
Unexpected refacetting of palladium nanoparticles under atmospheric N2 conditions
Authors: Zhang Xun , Meng Jun , Zhu Beien , Yuan Wentao , Yang Hangsheng , Zhang Ze , Gao Yi , Wang Yong
Published: June 2018

In situ TEM observations and DFT calculations reveal that the “inert” gas N2 has the ability to modify the structure of metal nanoparticles.
Cyano-tryptophans as dual infrared and fluorescence spectroscopic labels to assess structural dynamics in proteins
Authors: van Wilderen L. J. G. W. , Brunst H. , Gustmann H. , Wachtveitl J. , Broos J. , Bredenbeck J.
Published: June 2018

By moving the cyano group position on the indole ring, both artificial amino acids report differently to their microscopic environment.
Aggregation and fragmentation in liquids with dispersed nanoparticles
Authors: Jeżewski Wojciech
Published: June 2018

Nanoparticle-induced aggregation and fragmentation phenomena in liquid media are investigated by applying a model of preferential attachment of dispersing molecules to randomly chosen nanoparticles and larger particles, each containing a single nanoparticle.
New insights into the sensing mechanism of a phosphonate pyrene chemosensor for TNT
Authors: Lu Meiheng , Zhou Panwang , Li Zhongwei , Liu Jianyong , Yang Yanqiang , Han Keli
Published: June 2018

As security needs have increased, mechanism investigation has become of high importance in the development of new sensitive and selective chemosensors for chemical explosives.
Effect of fullerene acceptor on the performance of solar cells based on PffBT4T-2OD
Authors: Zhang Yiwei , Parnell Andrew J. , Blaszczyk Oskar , Musser Andrew J. , Samuel Ifor D. W. , Lidzey David G. , Bernardo Gabriel
Published: June 2018

We have studied organic solar cells composed of PffBT4T-2OD as electron donor and three different electron accepting fullerenes, in order to understand the impact of different fullerenes on the morphology and efficiency of the corresponding photovoltaic devices.
Role of cationic groups on structural and dynamical correlations in hydrated quaternary ammonium-functionalized poly(p-phenylene oxide)-based anion exchange membranes
Authors: Dong Dengpan , Wei Xiaoyu , Hooper Justin B. , Pan Hongchao , Bedrov Dmitry
Published: June 2018

Extensive atomistic molecular dynamics simulations were conducted using a polarizable force field to study hydroxide and water dynamics in anion exchange membranes.
Bile acid derivative-based catanionic mixtures: versatile tools for superficial charge modulation of supramolecular lamellae and nanotubes
Authors: di Gregorio Maria Chiara , Severoni Emilia , Travaglini Leana , Gubitosi Marta , Sennato Simona , Mura Francesco , Redondo-Gómez Carlos , Jover Aida , Pavel Nicolae Viorel , Galantini Luciano
Published: June 2018

Self-assembly in mixtures of cationic and anionic derivatives of a bile acid provides supramolecular lamellae and nanotubes with different charge.
Hierarchical heterostructure of Ag-nanoparticle decorated fullerene nanorods (Ag–FNRs) as an effective single particle freestanding SERS substrate
Authors: Kumar Gundam Sandeep , Shrestha Rekha Goswami , Ji Qingmin , Hill Jonathan P. , Ariga Katsuhiko , Acharya Somobrata , Shrestha Lok Kumar
Published: June 2018

A hierarchical heterostructure composed of silver nanoparticles on fullerene nanorods functions as SERS substrate for the detection Rhodamine 6G: R6G in nanomolar concentration range.
Direct evidence for surface long-lived superoxide radicals photo-generated in TiO2 and other metal oxide suspensions
Authors: Wang Dabin , Zhao Lixia , Wang Dan , Yan Li , Jing Chuanyong , Zhang Hui , Guo Liang-Hong , Tang Ning
Published: June 2018

Surface long-lived O2˙− were verified in photo-irradiated TiO2 suspensions by chemiluminescence and density functional theory calculations, which made great contribution to photocatalytic reactions, responsible for about 50% of reduction by TiO2.
Repurposing bacterial extracellular matrix for selective and differential abstraction of rare earth elements
Authors: Tay Pei Kun R. , Manjula-Basavanna Avinash , Joshi Neel S.
Published: June 2018

Highly robust engineered protein matrices derived from bacteria were used to isolate rare earth elements from mixtures of metals. The filters were re-used over multiple cycles and the bound REE were readily recovered.
Selenoprotein-U (SelU) knockdown triggers autophagy through PI3K–Akt–mTOR pathway inhibition in rooster Sertoli cells
Authors: Sattar Hamid , Yang Jie , Zhao Xia , Cai Jingzeng , Liu Qi , Ishfaq Muhammad , Yang Zijiang , Chen Menghao , Zhang Ziwei , Xu Shiwen
Published: June 2018

Selenoprotein U deprivation induced autophagy instead of apoptosis and altered the expression of spermatogenesis regulating factors in rooster Sertoli cells by disrupting PI3K–Akt–mTOR pathway signaling.
pH-Sensitive graphene oxide conjugate purpurin-18 methyl ester photosensitizer nanocomplex in photodynamic therapy
Authors: Zhang Ying , Zhang Hongyue , Wang Zhiqiang , Jin Yingxue
Published: June 2018

A GO–Pu18 composite showed excellent photodynamic bioactivity and pH-sensitive drug release behavior.
Mono BN-substituted analogues of naphthalene: a theoretical analysis of the effect of BN position on stability, aromaticity and frontier orbital energies
Authors: Stojanović Milovan , Baranac-Stojanović Marija
Published: June 2018

An insight into the electronic structure changes driven by CC → BN substitution in a naphthalene system has been given by quantum chemical calculations.
A benzimidazole-based highly selective colorimetric and far-red fluorometric pH sensor for intracellular imaging
Authors: Gong Tao , Li Rong , Yuan Yangyang , Yu Baofeng , Zhao Hong , Liu Zhizhen , Guo Rui , Su Dan , Liang Wenting , Dong Chuan
Published: June 2018

A turn-on fluorescent probe (E)-4-(2-(1H-benzo[d]imidazol-2-yl)vinyl)-N,N-diphenylaniline (BVD) was facilely synthesized via the ethylene bridging of triphenylamine and benzimidazole.
Effects of Nd-modification on the activity and SO2 resistance of MnOx/TiO2 catalysts for low-temperature NH3-SCR
Authors: Chen Hongfeng , Xia Yang , Fang Ruyi , Huang Hui , Gan Yongping , Liang Chu , Zhang Jun , Zhang Wenkui , Liu Xuesong
Published: June 2018

MnOx/TiO2 (MnTi) and Nd-modified MnOx/TiO2 (MnNdTi) were prepared via a coprecipitation method.
Facile in situ fabrication of oriented titania submicrorods embedded into a superelastic nickel–titanium alloy fiber substrate and their application in solid-phase microextraction
Authors: Wang Feifei , Wang Zhuo , Wang Ziyi , Zhang Rong , Du Junliang , Du Xinzhen
Published: June 2018

A novel NiTi@TiO2SR fiber was fabricated on a NiTi fiber substrate after annealing for the determination of PAHs in water.
Investigation of photoluminescence properties, Judd–Ofelt analysis, luminescence nanothermometry and optical heating behaviour of Er3+/Eu3+/Yb3+:NaZnPO4 nanophosphors
Authors: Mukhopadhyay Lakshmi , Rai Vineet Kumar
Published: June 2018

The Er3+/Eu3+/Yb3+:NaZnPO4 nanophosphors can be used as temperature sensors and optical nano-heaters with significant sensor sensitivity.
Interface-induced nucleation and growth: a new route for fabricating ordered silver nanohole arrays
Authors: Zuo Zewen , Wen Yibing , Zhang Sheng
Published: June 2018

An interface-induced growth route was developed to prepare large-area metal nanohole arrays with regulable structure and optical properties.
Ultra-stretchable and highly sensitive strain sensor based on gradient structure carbon nanotubes
Authors: Liang Binghao , Lin Zhiqiang , Chen Wenjun , He Zhongfu , Zhong Jing , Zhu Hai , Tang Zikang , Gui Xuchun
Published: June 2018

A highly stretchable and sensitive strain sensor based on a gradient carbon nanotube was developed. The strain sensors show an unprecedented combination of both high sensitivity (gauge factor = 13.5) and ultra-stretchability (>550%).
Wearable glove sensor for non-invasive organophosphorus pesticide detection based on a double-signal fluorescence strategy
Authors: Xu Xiao-Yu , Yan Bing , Lian Xiao
Published: June 2018

By integrating a CMC aerogel as the host material and the two fluorescent centers as a double-signal sensing strategy, a wearable glove-based fluorescence sensor has been constructed for organophosphorus pesticides detection on the surfaces of agricultural products by swipe collection.
Cationic poly-l-lysine-encapsulated melanin nanoparticles as efficient photoacoustic agents targeting to glycosaminoglycans for the early diagnosis of articular cartilage degeneration in osteoarthritis
Authors: Chen Liang , Ji Yu , Hu Xiaoming , Cui Cao , Liu Hong , Tang Yufu , Qi Baiwen , Niu Yahui , Hu Xiang , Yu Aixi , Fan Quli
Published: June 2018

Cartilage degeneration is the hallmark of osteoarthritis (OA) and its early diagnosis is essential for effective cartilage repair.
Gold nanorod-assembled ZnGa2O4:Cr nanofibers for LED-amplified gene silencing in cancer cells
Authors: Qin Lun , Yan Peijian , Xie Congkun , Huang Jie , Ren Zhaohui , Li Xiang , Best Serena , Cai Xiujun , Han Gaorong
Published: June 2018

A localized therapeutic system, consisting of gold nanorods (Au NRs) loaded with hTERT siRNA assembled on the surface of ZnGa2O4:Cr (ZGOC) nanofibers, offers the potential for a LED-induced mild photothermal effect which enhances gene silencing effect in cancer cells.
Protein–protein interactions of human glyoxalase II: findings of a reliable docking protocol
Authors: Galeazzi Roberta , Laudadio Emiliano , Falconi Emanuele , Massaccesi Luca , Ercolani Luisa , Mobbili Giovanna , Minnelli Cristina , Scirè Andrea , Cianfruglia Laura , Armeni Tatiana
Published: June 2018

Glyoxalase II has been docked with actin and malate dehydrogenase and a direct involvement of the GlxII active site was found. The presence of GSH in the GlxII catalytic site promotes the protein–protein stabilization.
Direct C–OH/P(O)–H dehydration coupling forming phosphine oxides
Authors: Chen Long , Zhu Yueyue , Chen Tieqiao , Liu Long , Zhang Ji-Shu , Han Li-Biao
Published: June 2018

At-BuONa-mediated C–OH/P(O)–H cross dehydration coupling is developed to construct sp3C–P bonds.
Open-cage silsesquioxane necklace polymers having closed-cage silsesquioxane pendants
Authors: Imoto Hiroaki , Katoh Ryoichi , Naka Kensuke
Published: June 2018

A novel POSS monomer design has been proposed; a closed-cage POSS was tethered to an open-cage POSS, and the remaining two functional groups were employed for polymerization. The thermal and optical properties of the obtained main-chain type POSS polymers can be widely tuned by the substituents at the corners of the POSSs.
Control of the photoluminescence in Ba0.97Y2Si3O10:Eu2+ phosphors via the intensification effect of the second luminescence centre
Authors: Li Haoran , Liang Yujun , Zhu Yingli , Liu Shiqi , Chen Jiahui , Lei Wen , Wang Mengyuan
Published: June 2018

A method is reported that broadens the FWHMs of the emission spectra of Ba0.97Y2Si3O10:0.03Eu2+ by intensifying the second emission peak.
Inhibition of low-density lipoprotein receptor degradation with a cyclic peptide that disrupts the homodimerization of IDOL E3 ubiquitin ligase
Authors: Leitch Eilidh K. , Elumalai Nagarajan , Fridén-Saxin Maria , Dahl Göran , Wan Paul , Clarkson Paul , Valeur Eric , Pairaudeau Garry , Boyd Helen , Tavassoli Ali
Published: June 2018

A cyclic peptide IDOL homodimerization inhibitor identified from a genetically encoded SICLOPPS library is activein vitroand in cells.
Computational investigation of actuation mechanisms of droplets on porous air-permeable substrates
Authors: Chrysinas P. , Pashos G. , Vourdas N. , Kokkoris G. , Stathopoulos V. N. , Boudouvis A. G.
Published: June 2018

We study the actuation of droplets on porous substrates by air that permeates through pores.
Hydrogen-bonding-directed helical nanofibers in a polythiophene-based all-conjugated diblock copolymer
Authors: Cui Huina , Chen Xiaosong , Wang Yue , Wei Dacheng , Qiu Feng , Peng Juan
Published: June 2018

Helical nanofibers with a large aspect ratio were crafted from an achiral all-conjugated diblock copolymer, P3HT-b-P3HHT, in an aged pyridine solution. Such helical nanofibers exhibit superior mechanical properties and charge transport properties.
Understanding the effect of chlorobenzene and isopropanol anti-solvent treatments on the recombination and interfacial charge accumulation in efficient planar perovskite solar cells
Authors: Prochowicz Daniel , Tavakoli Mohammad Mahdi , Solanki Ankur , Goh Teck Wee , Pandey Kavita , Sum Tze Chien , Saliba Michael , Yadav Pankaj
Published: June 2018

The role of anti-solvent treatment on the morphological and optoelectronic properties of multiple-cation and mixed-halide perovskite solar cells have been studied.
Correction: A hypoxia-specific and mitochondria-targeted anticancer theranostic agent with high selectivity for cancer cells
Authors: Hu Mingxing , Yang Chao , Luo Yi , Chen Fan , Yang Fangfang , Yang Shuping , Chen Hao , Cheng Zhiqiang , Li Kun , Xie Yongmei
Published: June 2018

Correction for ‘A hypoxia-specific and mitochondria-targeted anticancer theranostic agent with high selectivity for cancer cells’ by Mingxing Hu et al., J. Mater. Chem. B, 2018, 6, 2413–2416.
A novel strategy to synthesize anisotropic SmCo5 particles from Co/Sm(OH)3 composites with special morphology
Authors: Li Chenglin , Wu Qiong , Ma Zhenhui , Xu Huanhuan , Cong Liying , Yue Ming
Published: June 2018

In this study, we report a new strategy for preparing magnetically anisotropic SmCo5 single crystal particles by reductive annealing of precursors with specially designed nanostructures.
The multifaceted allosteric regulation of Aurora kinase A
Authors: Levinson Nicholas Mark
Published: June 2018

The protein kinase Aurora A (AurA) is essential for the formation of bipolar mitotic spindles in all eukaryotic organisms. During spindle assembly, AurA is activated through two different pathways operating at centrosomes and on spindle microtubules. Recent studies have revealed that these pathways operate quite differently at the molecular level, activating AurA through multifaceted changes to the structure and dynamics of the kinase domain. These advances provide an intimate atomic-level view of the finely tuned regulatory control operating in protein kinases, revealing mechanisms of allosteric cooperativity that provide graded levels of regulatory control, and a previously unanticipated mechanism for kinase activation by phosphorylation on the activation loop. Here, I review these advances in our understanding of AurA function, and discuss their implications for the use of allosteric small molecule inhibitors to address recently discovered roles of AurA in neuroblastoma, prostate cancer and melanoma.
Competitive study on reliability of difference voltage levels of NPC multilevel inverters
Authors: Ghodsi M. , Barakati S.M. , Sadr S.M.
Published: June 2018

The issue of reliability in power electronic converters (PECs) has received comparatively less attention by researchers. Among PECs, the multilevel inverter is a favourite choice of industry in the area of medium‐voltage and high‐power uses. To study the reliability of PECs, first, the failure rates of elements such as diodes, capacitors, and switches are introduced based on a relevant standard. Then, the reliability indices of two converters, 3‐level and 5‐level neutral point clamped, are calculated and compared. The results of the reliability study indicate an appropriate converter for sensitive application in industry.
Non‐orthogonal AltBOC modulation for BeiDou B2 signals
Authors: Huang Xinming
Published: June 2018

New three‐level binary offset carrier (BOC) subcarriers are constructed, based on which the non‐orthogonal alternative BOC (AltBOC) modulation and its unequal power generalised form are achieved. The new constant envelope modulations have achieved a lower hardware complexity, which provide a solution to dual‐frequency multiplexing problem confronted by BeiDou B2 frequency band.
Brushless DC motor‐driven grid‐interfaced solar water pumping system
Authors: Kumar Rajan , Singh Bhim
Published: June 2018

A solar water pumping system employing a brushless DC motor drive is presented. The utility grid is utilised as a secondary power source. The total load demand is shared by photovoltaic array and the grid. This results in continuous water pumping. The amount of power shared by each source is controlled through a power factor corrected boost converter. The full utilisation of motor pump is achieved with increased reliability. The power quality is improved at the utility grid side. The simulation and hardware implementation are carried out to exhibit the performance of the system.
Anticancer activity evaluation of green synthesised gold–silver alloy nanoparticles on colourectal HT‐29 and prostate DU‐145 carcinoma cell lines
Authors: Entezari Heravi Reza , Zakeri Sajad , Nazari Pardis
Published: June 2018

Nanotechnology is an interesting way to produce and deal with fascinating features of materials. Metal nanoparticles offer a vast spectrum of potential applications in medicine and pharmaceutical sciences due to advances in nanotechnology research. This study was aimed to evaluate the anticancer properties of gold–silver (Au–Ag) alloy nanoparticles, which were synthesised using a green method by Galega officinalis ethanolic extract. The antitumour activity of biosynthesised nanoparticles has been assessed in vitro using 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyl tetrazolium bromide (MTT) assay on DU‐145 and HT‐29, prostate and colon cell lines, respectively. The Au–Ag alloy nanoparticles activity to inhibit the growth of cancer cell lines was recorded in terms of decrease in viable cell count in comparison with the control value. The spherical Au–Ag alloy nanoparticles with average size of 100 nm diameter were synthesised. The growth inhibition of the human prostate (DU‐145) and colon carcinoma cell line (HT‐29) has been found to be dose dependent. The calculated IC50 for the DU‐145 cell line was 95.78 μg/ml after 24 h and for the HT‐29 cell line was 70.66 µg/ml after 48 h. The results of this study suggest that Au–Ag alloy nanoparticles could be as an active substance against tumour cell lines and may be a beneficial treatment for cancer.
Molecular gas in two companion cluster galaxies at z = 1.2
Authors: Castignani G. , Combes F. , Salomé P. , Andreon S. , Pannella M. , Heywood I. , Trinchieri G. , Cicone C. , Davies L. J. M. , Owen F. N. , Raichoor A.
Published: June 2018

Context. Probing both star formation history and evolution of distant cluster galaxies is essential to evaluate the effect of dense environment on shaping the galaxy properties we observe today.

Aims. We investigate the effect of cluster environment on the processing of the molecular gas in distant cluster galaxies. We study the molecular gas properties of two star-forming galaxies separated by 6 kpc in the projected space and belonging to a galaxy cluster selected from the Irac Shallow Cluster Survey, at a redshift z = 1.2, that is, ~ 2 Gyr after the cosmic star formation density peak. This work describes the first CO detection from 1 < z < 1.4 star-forming cluster galaxies with no clear reported evidence of active galactic nuclei.

Methods. We exploit observations taken with the NOEMA interferometer at ~3 mm to detect CO(2−1) line emission from the two selected galaxies, unresolved by our observations.

Results. Based on the CO(2−1) spectrum, we estimate a total molecular gas mass M(H2) = (2.2+0.50.4) × 1010 M⊙, where fully excited gas is assumed, and a dust mass Mdust < 4.2 × 108 M⊙ for the two blended sources. The two galaxies have similar stellar masses and Hα-based star formation rates (SFRs) found in previous work, as well as a large relative velocity of ~400 km s−1 estimated from the CO(2−1) line width. These findings tend to privilege a scenario where both sources contribute to the observed CO(2−1). Using the archival Spitzer MIPS flux at 24 μm we estimate an SFR (24μm) = (28+12−8) M⊙/yr for each of the two galaxies. Assuming that the two sources contribute equally to the observed CO(2−1), our analysis yields a depletion timescale of τdep = (3.9+1.4−1.8) × 108 yr, and a molecular gas to stellar mass ratio of 0.17 ± 0.13 for each of two sources, separately. We also provide a new, more precise measurement of an unknown weighted mean of the redshifts of the two galaxies, z = 1.163 ± 0.001.

Conclusions. Our results are in overall agreement with those of other distant cluster galaxies and with model predictions for main sequence (MS) field galaxies at similar redshifts. The two target galaxies have molecular gas mass and depletion times that are marginally compatible with, but smaller than those of MS field galaxies, suggesting that the molecular gas has not been sufficiently refueled. We speculate that the cluster environment might have played a role in preventing the refueling via environmental mechanisms such as galaxy harassment, strangulation, ram-pressure, or tidal stripping. Higher-resolution and higher-frequency observations will enable us to spatially resolve the two sources and possibly distinguish between different gas processing mechanisms.
Revised Gaia Data Release 2 passbands
Authors: Weiler Michael
Published: June 2018

Context. The European Space Agency mission Gaia has published, with its second data release (DR2), a catalogue of photometric measurements for more than 1.3 billion astronomical objects in three passbands. The precision of the measurements in these passbands, denoted G, GBP, and GRP, reach down to the milli-magnitude level. The scientific exploitation of this data set requires precise knowledge of the response curves of the three passbands.

Aims. This work aims to improve the exploitation of the photometric data by deriving an improved set of response curves for the three passbands, allowing for an accurate computation of synthetic Gaia photometry.

Methods. This is achieved by formulating the problem of passband determination in a functional analytic formalism, and linking the photometric measurements with four observational, one empirical, and one theoretical spectral library.

Results. We present response curves for G, GBP, and GRP that differ from the previously published curves, and which provide a better agreement between synthetic Gaia photometry and Gaia observations.
Search for an equilibrium between heat demand and supply in heating systems under a unifiedheat supply organization
Authors: Penkovsky Andrey V.
Published: June 2018

Organizational model of the heat energy market on a unified heat supply organization is considered. An equilibrium mathematical model is proposed for the liberalized tariff setting conditions based on a microeconomic monopolistic market model. This mathematical model allows for taking into account energy production and transportation costs as part of a single economic criterion and to determine the supply and demand equilibrium for heat energy. The search for an optimal solution to the developed mathematical model of the unified heat supply organization is based on the univariate relaxation method with the subsequent use of methods of redundant design and simple iterative schemes. The developed mathematical model fully reflect the current “rules of the game” between heat energy producers and consumers and allow a maximum consideration for the interests of all participants of the heat supply process under physical and engineering constraints on heat energy sources and heat networks.
Optimization of hydraulic modes of distribution heat networks by dynamic programming
Authors: Lucenko Alexandr V.
Published: June 2018

An original modification of the dynamic programming method is proposed, which is designed to optimize the hydraulic modes of distribution heat networks, based on special properties of the problem. It is demonstrated that the proposed modification of the dynamic programming method has a high computational efficiency in comparison with possible alternative methods of discrete-continuous optimization.
An approach to design of an intelligent heating system
Authors: Stennikov Valery , Barakhtenko Evgeny , Sokolov Dmitry
Published: June 2018

At present, there is a growing need to solve the design problem of the hydraulic circuit of an intelligent heating system with the required transmission capacity, hydraulic stability and reliability indices. The paper proposes a mathematical statement of the design problem of such a hydraulic circuit and an original methodological approach to solve it by decomposing a general complex problem into several simpler ones (of a smaller dimensionality). The proposed approach makes it possible to tailor the computational procedure to specific features of a heating system to be modeled.
Substantiation of Safe Conditions During Undermining of Hydraulic Waste Disposal
Authors: Kutepov Yuriy , Mironov Aleksandr , Sablin Maksim , Borger Elena
Published: June 2018

This article considers mining and geological conditions of the site “Blagodatny” of the mine named after A.D. Ruban located underneaththe old open pit coal mine and the hydraulic-mine dump. The potentially dangerous zones in the undermined rock mass have been identified based onthe conditions of formation of water inflow into mine workings. Safe depthof coal seams mining has been calculated depending on the type of water body – the hydraulic-mine dump.
Parameters of Antifiltering Screens, which are around Underground Isolating Structures
Authors: Khyamyalyainen Veniamin , Nurgaliev Eugeny , Mayorov Alexandr
Published: June 2018

This article shows results of researches for the definition of rational parameters of technologies for antifiltering screens building aroundnon-hack isolating monolithic bridges with attention to experience of excavations isolation in Kuzbass coal mines. There were evaluated theinfluence of parameters of antifiltering screen at liquids and gases relocating through rock massif. It has been shown a mathematical model of waterfiltering and liquid-solid suspensions which are based on cement mixtures through the border rock massif with antifiltering plugging screen.
Regional Mining of Zeolite, Current Mining
Management and Quality Perspective by 2050
Authors: Drevko Slavomír , Drevková Mária , Vasilková Kmecová Martina
Published: June 2018

The submitted contribution describes the regional extraction of the natural zeolite around Vranov nad Topľou (Košice´ region). Zeolite is mined here for quarries Nižný Hrabovec, Majerovce, Kučín and Pusté Čemerné. The zeolite is mined by private companies and processed into different fractions (according to requirements and application areas of use in the economy). There is a degree of air, soil and ground water pollution around the quarries. In the contribution attention is paid not only to pollution as such but also to the overall state of the landscape load, level of remediation and reclamation. Mining and treatment of extracted material requires certain measures to protect and preserve the surrounding natural environment. Post therefore also refers to the level of pollution and damage to the country and the prospects for its sustainability until 2050.
Justification of Spatially-Planned Solutions and
Determination of the Dimension Block in the
Working of the Medium Thick Inclined Coal
Seams with the Room and Pillar System
Authors: Pham Duc Thang , Phan Tuan Anh , Vitcalov Viktor , Le Quang Phuc
Published: June 2018

Technological parameters for working out of the medium thick inclined coal seams with a diagonal arrangement of a line of a working face. An analysis of the constraints that apply the technology and the complexities of the mining and geological conditions of the Quang Ninh coal basin. The possibility and expediency of using the foreign experience of working out of the medium thick inclined coal seams in the mines of Vietnam and justification of spatially-planned solutions for working. The scheme of preparation and working out of the excavation area is given in view of the technological features in difficult mining and geological conditions, using the room and pillar system and determination of the rational length of the block along the strike.
Life-Support Model of Supply Systems of Oil and Gas Industry Objects
Authors: Abu-Abed Fares , Khabarov Alexey
Published: June 2018

At present, repair and diagnostic complexes are being developed for repair of oil and gas production facilities, including control areas for working capacity, diagnosing components used in maintenance stations, as well as areas equipped with the necessary technological equipment, measuring instruments, tools and equipment for carrying out current repair of replacement elements. For maintenance of repair, repair-diagnostic complexes are equipped with means of power supply, sets of spare property and accessories and operational documentation. Repair-diagnostic complexes can be represented using a three-phase multi-channel queuing system. The study of such a system with the distribution functions of the service time of applications different from the exponential makes it difficult to use analytical models. The developed simulation model of the repair and diagnostic complex allows to evaluate the characteristics of its functioning, the most important of which is the average service time of the application in the system, as well as to determine the required number of channels on each site. The developed model can be aggregated into a general model of research into the operation of complex technical systems for supplying oilfield facilities.
Development of Design and Technological
Parameters of Ore Extraction for Underground
Mining
Authors: Savich Igor , Mustafin Vadim , Romanov Vladislav , Sukhov Dmitriy
Published: June 2018

While defining rational constructive and technological underground mining technique parameters we should consider many factors, especially in caving methods. The experience of exploiting caving technologies shows that the use of traditional designs of this technique is not always efficient and economically expedient. The article presents alternative caving methods, developed by specialists of the department for "Geotechnologies of mineral resources development" of the Moscow Mining Institute, for the conditions of Kola Peninsula polymetallic deposits, chromite deposits of Western Kazakhstan. What is more, we proposed the vector of caving systems development in the deep and high stress mining with difficult geomechanical conditions.
IIR Spectra of Low-Metamorphosed Barzas Coal Subjected to Thermal Treatment in Carbon Dioxide Medium
Authors: Petrov Ivan , Tryasunov Boris , Ushakov Konstantin , Bogomolov Alexander
Published: June 2018

Using FTIR spectroscopy, elemental analysis and gas chromatography methods, the temperature effects on the thermal transformations of low-metamorphosed Barzas coal (sapromixite) in carbon dioxide media have been studied. According to the IR spectroscopic data, an increase in the relative content of alkyl groups (-CH3and >CH2) in the solid residue of sapromixite with a rise in the process temperature up to ~ 475°C was observed, followed by a rapid decrease in their concentration at higher heat treatment temperatures. Such behavior may be associated with an initial accumulation of alkyl fragments, formedfrom the coal matter, and their subsequent transition into the gaseous phase. A close relationship (an antibate dependence) has been discovered between H/C atomic ratios in resin-containing solid products of thermally treated Barzas coal and the yields of gases formed during its pyrolysis. Chromatographic analysis of liquid products formed after Barzas coal heat treatment at 475°C showed that the main organic constituents of liquid phase (about 3-5% by weight) were phenol and its methyl-and dimethyl derivatives (their total content in methylene chloride extract was of > 77% by weight).
The Choice of Methods of Quarry Wastewater Purifying
Authors: Lesin Yury , Gogolin Vyacheslav , Murko Elena , Markov Sergey , Kretschmann Jurgen
Published: June 2018

The negative effect made by mining enterprises on the natural environment has complex origination. The intensive pollution is observed because of the influence of mineral deposits open-pit mining on the atmosphere, water resources and landscape complexes. Complex processes of environmental anthropogenic changes caused by open pits’ operations have brought to light the problem of surface water pollution near large mining segments. Industrial wastewater of mining enterprises has a significant impact on the natural environment. In connection with the continuous and significant increase in the volume of mining, the amount of wastewater from mines, quarries and processing plants is constantly increasing. The main components of wastewater from operating mining enterprises are mine (quarry) waters, as well as runoff from atmospheric waters polluted by water erosion of dumps and mineral stacks. The paper describes the possible ways of quarry wastewater purifying – using hydrocyclones and artificial filtering arrays made from overburden rock.
Technological Solutions for Processing Closed Coal Mines by Open Pit Method
Authors: Makarov Vladimir , Kovacs Péter , Dagmar Samuel , Paulman Riccardo
Published: June 2018

The main sources of environmental pollution are: pollution from the residual effects of working out of mine fields by underground method; pollution from secondary mining of mine fields by the open method. The pollution of the environment from the underground mining of mine fields is mainly due to the erosion of the surface of the ditches caused by collapse of the underground workings, spontaneous combustion of the remaining coal reserves and exit of poison gases SO2 and CO to the surface through the cracks from the lower horizons of the worked-out mine fields. This makes actual the research of technological possibilities of harmful emissions reducing when quarrying underground mines’ fields. The environment deterioration from conducting open pit mining operations in the underground mine fields is caused by the technological processes of quarrying (preparation of rock for excavation, excavation, transportation of rocks and coal, dumping), by the objects of the open pit infrastructure (industrial site, transport communications, trenches and other workings, coal storage and rock dumps). The main direction of eliminating the negative environmental consequences of underground mining is the localization or complete isolation of the underground mines influence’ on the surface.
A New Approach to the Problem of Protection of Undermined Objects on the Earth's Surface
Authors: Kulibaba Sergey , Esina Ekaterina
Published: June 2018

Protection of undermined buildings, structures and natural objects on the earth’s sur-face is to eliminate or minimize the hazardous effect of underground mining on their safe state and functioning. Based on the analysis of the provisions of the current regulatory document regulating the rules for the protection of objects on the earth’s surface from the negative impact of mining operations, it was concluded that the method for determining the hazardous effect zones boundaries by means of shift angles in modern conditions of underground mining of stratified deposits is imperfect. A new approach to solving the problem of optimization of mining operations under built-up areas is proposed. This approach opens up a wide range of possible engineering solutions when planning the development of mining operations in the fields, and various options for protecting buildings, structures and natural objects located in the undermined areas.
Basic Technologies and Equipment Used for Peat Deposits Development in Foreign Countries
Authors: Misnikov Oleg
Published: June 2018

The article discusses the perspectives of the use of peat to solve several issues. First, there are prospects of using peat fuel for solving energy problems. Second, there is a need to use peat processing products for increasing soil fertility and combating desertification of territories. The author considers a possible solution of the problem of utilization of livestock wastes together with the obtaining of peat composts. The objective prerequisites for increasing the volume of peat extraction in the Russian Federation are given. The article discusses features of the main technologies for the extraction of milled and sod peat. The interrelation of the technology of peat harvesting with the technology of its further processing is substantiated. A limited amount of technological equipment produced in Russia causes the need for its importing. The paper overviews the main peat extraction technologies used in Western Europe and Canada. An analysis of the features of technological processes related to the characteristics of raw materials and the needs of the market is made. The tendencies in development of production of technological equipment are considered. Currently, it is recommended to use mixed sets of technological equipment of various manufacturers.