bluuebunny/crossref_metadata_2025 huggingface dataset:
Tailoring superradiance to design artificial quantum systems
Authors: Longo Paolo , Keitel Christoph H. , Evers Jörg
Published: March 2016

Cooperative phenomena arising due to the coupling of individual atoms via the radiation field are a cornerstone of modern quantum and optical physics. Recent experiments on x-ray quantum optics added a new twist to this line of research by exploiting superradiance in order to construct artificial quantum systems. However, so far, systematic approaches to deliberately design superradiance properties are lacking, impeding the desired implementation of more advanced quantum optical schemes. Here, we develop an analytical framework for the engineering of single-photon superradiance in extended media applicable across the entire electromagnetic spectrum, and show how it can be used to tailor the properties of an artificial quantum system. This “reverse engineering” of superradiance not only provides an avenue towards non-linear and quantum mechanical phenomena at x-ray energies, but also leads to a unified view on and a better understanding of superradiance across different physical systems.
The BDNF Val66Met polymorphism is associated with the functional connectivity dynamics of pain modulatory systems in primary dysmenorrhea
Authors: Wei Shyh-Yuh , Chao Hsiang-Tai , Tu Cheng-Hao , Lin Ming-Wei , Li Wei-Chi , Low Intan , Shen Horng-Der , Chen Li-Fen , Hsieh Jen-Chuen
Published: March 2016

Primary dysmenorrhea (PDM), menstrual pain without an organic cause, is a prevailing problem in women of reproductive age. We previously reported alterations of structure and functional connectivity (FC) in the periaqueductal gray (PAG) of PDM subjects. Given that the brain derived neurotrophic factor (BDNF) acts as a pain modulator within the PAG and the BDNF Val66Met polymorphism contributes towards susceptibility to PDM, the present study of imaging genetics set out to investigate the influence of, firstly, the BDNF Val66Met single nucleotide polymorphism and, secondly, the genotype-pain interplays on the descending pain modulatory systems in the context of PAG-seeded FC patterning. Fifty-six subjects with PDM and 60 controls participated in the current study of resting-state functional magnetic resonance imaging (fMRI) during the menstruation and peri-ovulatory phases; in parallel, blood samples were taken for genotyping. Our findings indicate that the BDNF Val66Met polymorphism is associated with the diverse functional expressions of the descending pain modulatory systems. Furthermore, PAG FC patterns in pain-free controls are altered in women with PDM in a genotype-specific manner. Such resilient brain dynamics may underpin the individual differences and shed light on the vulnerability for chronic pain disorders of PDM subjects.
Structural insights and in vitro reconstitution of membrane targeting and activation of human PI4KB by the ACBD3 protein
Authors: Klima Martin , Tóth Dániel J. , Hexnerova Rozalie , Baumlova Adriana , Chalupska Dominika , Tykvart Jan , Rezabkova Lenka , Sengupta Nivedita , Man Petr , Dubankova Anna , Humpolickova Jana , Nencka Radim , Veverka Vaclav , Balla Tamas , Boura Evzen
Published: March 2016

Phosphatidylinositol 4-kinase beta (PI4KB) is one of four human PI4K enzymes that generate phosphatidylinositol 4-phosphate (PI4P), a minor but essential regulatory lipid found in all eukaryotic cells. To convert their lipid substrates, PI4Ks must be recruited to the correct membrane compartment. PI4KB is critical for the maintenance of the Golgi and trans Golgi network (TGN) PI4P pools, however, the actual targeting mechanism of PI4KB to the Golgi and TGN membranes is unknown. Here, we present an NMR structure of the complex of PI4KB and its interacting partner, Golgi adaptor protein acyl-coenzyme A binding domain containing protein 3 (ACBD3). We show that ACBD3 is capable of recruiting PI4KB to membranes both in vitro and in vivo and that membrane recruitment of PI4KB by ACBD3 increases its enzymatic activity and that the ACBD3:PI4KB complex formation is essential for proper function of the Golgi.
Resolving the spin reorientation and crystal-field transitions in TmFeO3 with terahertz transient
Authors: Zhang Kailin , Xu Kai , Liu Xiumei , Zhang Zeyu , Jin Zuanming , Lin Xian , Li Bo , Cao Shixun , Ma Guohong
Published: March 2016

Rare earth orthoferrites (RFeO3) exhibit abundant physical properties such as, weak macroscopic magnetization, spin reorientation transition and magneto-optical effect, especially the terahertz magnetic response, have received lots of attention in recent years. In this work, quasi-ferromagnetic (FM) and quasi-antiferromagnetic (AFM) modes arising from Fe sublattice of TmFeO3 single crystal are characterized in a temperature range from 40 to 300 K, by using terahertz time-domain spectroscopy (THz-TDS). The magnetic anisotropy constants in ac-plane are estimated according to the temperature-dependent resonant frequencies of both FM and AFM modes. Here, we further observe the broad-band absorptions centered ~0.52, ~0.61 and ~1.15 THz below 110 K, which are reasonably assigned to a series of crystal-field transitions (R modes) of ground multiplets (6H3) of Tm3+ ions. Specially, our finding reveals that the spin reorientation transition at a temperature interval from 93 to 85 K is driven by magnetic anisotropy, however, which plays negligible role on the electronic transitions of Tm ions in the absence of applied magnetic fields.
Tetrapod-like pelvic girdle in a walking cavefish
Authors: Flammang Brooke E. , Suvarnaraksha Apinun , Markiewicz Julie , Soares Daphne
Published: March 2016

Fishes have adapted a number of different behaviors to move out of the water, but none have been described as being able to walk on land with a tetrapod-like gait. Here we show that the blind cavefish Cryptotora thamicola walks and climbs waterfalls with a salamander-like diagonal-couplets lateral sequence gait and has evolved a robust pelvic girdle that shares morphological features associated with terrestrial vertebrates. In all other fishes, the pelvic bones are suspended in a muscular sling or loosely attached to the pectoral girdle anteriorly. In contrast, the pelvic girdle of Cryptotora is a large, broad puboischiadic plate that is joined to the iliac process of a hypertrophied sacral rib; fusion of these bones in tetrapods creates an acetabulum. The vertebral column in the sacral area has large anterior and posterior zygapophyses, transverse processes and broad neural spines, all of which are associated with terrestrial organisms. The diagonal-couplet lateral sequence gait was accomplished by rotation of the pectoral and pelvic girdles creating a standing wave of the axial body. These findings are significant because they represent the first example of behavioural and morphological adaptation in an extant fish that converges on the tetrapodal walking behaviour and morphology.
Dynamin II is required for 17β-estradiol signaling and autophagy-based ERα degradation
Authors: Totta Pierangela , Busonero Claudia , Leone Stefano , Marino Maria , Acconcia Filippo
Published: March 2016

17β-estradiol (E2) regulates diverse physiological effects, including cell proliferation, by binding to estrogen receptor α (ERα). ERα is both a transcription factor that drives E2-sensitive gene expression and an extra-nuclear localized receptor that triggers the activation of diverse kinase cascades. While E2 triggers cell proliferation, it also induces ERα degradation in a typical hormone-dependent feedback loop. Although ERα breakdown proceeds through the 26S proteasome, a role for lysosomes and for some endocytic proteins in controlling ERα degradation has been reported. Here, we studied the role of the endocytic protein dynamin II in E2-dependent ERα signaling and degradation. The results indicate that dynamin II siRNA-mediated knock-down partially prevents E2-induced ERα degradation through the inhibition of an autophagy-based pathway and impairs E2-induced cell proliferation signaling. Altogether, these data demonstrate that dynamin II is required for the E2:ERα signaling of physiological functions and uncovers a role for autophagy in the control of ERα turnover.
Far-field radially polarized focal spot from plasmonic spiral structure combined with central aperture antenna
Authors: Mao Lei , Ren Yuan , Lu Yonghua , Lei Xinrui , Jiang Kang , Li Kuanguo , Wang Yong , Cui Chenjing , Wen Xiaolei , Wang Pei
Published: March 2016

Manipulation of a vector micro-beam with an optical antenna has significant potentials for nano-optical technology applications including bio-optics, optical fabrication and quantum information processing. We have designed and demonstrated a central aperture antenna within an Archimedean spiral that extracts the bonding plasmonic field from a surface to produce a new vector focal spot in far-field. The properties of this vector focal field are revealed by confocal microscopy and theoretical simulations. The pattern, polarization and phase of the focal field are determined by the incident light and by the chirality of the Archimedean spiral. For incident light with right-handed circular polarization, the left-handed spiral (one-order chirality) outputs a micro-radially polarized focal field. Our results reveal the relationship between the near-field and far-field distributions of the plasmonic spiral structure and the structure has the potential to lead to advances in diverse applications such as plasmonic lenses, near-field angular momentum detection and optical tweezers.
Effect of the tip length of multi-branched AuNFs on the detection performance of immunochromatographic assays
Authors: Xu Peng , Li Juan , Huang Xiaolin , Duan Hong , Ji Yanwei , Xiong Yonghua
Published: March 2016

The traditional immunochromatographic assay (ICA) using conventional spherical gold nanoparticles (AuNSs, 30–40 nm) as labeled probes usually suffers from low sensitivity because of insufficient probe optical intensity.
Development of semiclassical molecular dynamics simulation method
Authors: Nakamura Hiroki , Nanbu Shinkoh , Teranishi Yoshiaki , Ohta Ayumi
Published: March 2016

Various quantum mechanical effects such as nonadiabatic transitions, quantum mechanical tunneling and coherence play crucial roles in a variety of chemical and biological systems.
Constraining the coordination geometries of lanthanide centers and magnetic building blocks in frameworks: a new strategy for molecular nanomagnets
Authors: Liu Ke , Zhang Xuejing , Meng Xixi , Shi Wei , Cheng Peng , Powell Annie K.
Published: March 2016

The study of molecular nanomagnets can be expanded to a new platform of metal–organic frameworks.
The anti-inflammatory effect of a glycosylation product derived from the high hydrostatic pressure enzymatic hydrolysate of a flatfish byproduct
Authors: Choe In-Hu , Jeon Hyeon Jin , Eom Sung-Hwan , Han Young-Ki , Kim Yoon Sook , Lee Sang-Hoon
Published: March 2016

In this study, flatfish byproducts were hydrolyzed by Protamex at high hydrostatic pressure and glycosylated with ribose to utilize the protein of flatfish byproducts as a nutraceutical.
Inexpensive α-amylase production and application for fiber splitting in leather processing
Authors: Pandi Ajitha , Ramalingam Sathya , Rao Jonnalagadda Raghava , Kamini Numbi Ramudu , Gowthaman Marichetti Kuppuswami
Published: March 2016

Recently, the production of superior quality enzymes using waste sources has promoted greater research interest due to their enhanced enzyme activity, selectivity and stability.
Efficient flame retardant polyvinyl alcohol membrane through surface graft method
Authors: Liu Li , Liu Yuansen , Liu Yuan , Wang Qi
Published: March 2016

This paper introduced an efficient charring method through surface graft. The flame retardant was grafted on membrane surface through the chemical reaction between the reactive groups of the P–Si compound and hydroxyl ones of PVA.
Aqueous sol–gel synthesized anatase TiO2nanoplates with high-rate capabilities for lithium-ion and sodium-ion batteries
Authors: Yang Hao , Duh Jenq-Gong
Published: March 2016

The graph shows the structure of anatase nanoplates that is assembled using terephthalic acid. After the acid is burned out and transforms into CO2, the nanoplates exhibit uniform nanopores, which is suitable for Li-ion/Na-ion insertion.
Novel Pd-catalyzed electroless Au deposition method using a sulfite solution
Authors: Li Bing , Li Ning , Li Deyu , Wang Yanqing
Published: March 2016

A novel method is reported for the electroless deposition of Au using nanoscale Pd catalysts in a sulfite solution. A uniform and high quality Au film was generated.
Analysis of chlorinated hydrocarbons in gas phase using a portable membrane inlet mass spectrometer
Authors: Giannoukos Stamatios , Brkić Boris , Taylor Stephen
Published: March 2016

A compact portable membrane inlet mass spectrometer (MIMS) has been used for the first time to detect and monitor, both qualitatively and quantitatively, volatile chlorinated hydrocarbons in the gaseous phase.
Brønsted acid-catalyzed chemodivergent reactions of ortho-mercaptobenzyl alcohols with 3-alkyl-2-vinylindoles and styrenes: [5+2] cyclization versus hydroxysulfenylation
Authors: Zhao Jia-Jia , Tang Man , Zhang Hong-Hao , Xu Meng-Meng , Shi Feng
Published: March 2016

The title reactions were established to provide efficient methods for constructing a benzoxathiepine scaffold and synthesizing β-hydroxy sulfides in good yield and excellent diastereoselectivity.
A cyclic (alkyl)(amido)carbene: synthesis, study and utility as a desulfurization reagent
Authors: McCarty Zachary R. , Lastovickova Dominika N. , Bielawski Christopher W.
Published: March 2016

The synthesis and study of a cyclic (alkyl)(amido)carbene is described.
In-solution patterning of standing up porphyrin based nanostructures within hydrogen bonded porous networks – a structural effect of a host matrix on guest entities
Authors: Lombana A. , Battaglini N. , Tsague-Kenfac G. , Zrig S. , Lang P.
Published: March 2016

A donor/acceptor system built in solution by the entrapment of porphyrin derivatives in the pores of a PTCDI–melamine host network on Au(111).
A ferrocene–azobenzene derivative showing unprecedented phase transition and better solubility upon UV irradiation
Authors: Zhang Rui , Ji Ya-Jian , Yang Lan , Zhang Yi , Kuang Gui-Chao
Published: March 2016

A ferrocene–azobenzene derivative showing unprecedented crystal–liquid phase transition at an elevated temperature and better solubility in organic solvents after UV irradiation has been successfully reported.
First principles study of confinement effects for oxygen vacancies in BaZrO3 (001) ultra-thin films
Authors: Arrigoni Marco , Bjørheim Tor S. , Kotomin Eugene , Maier Joachim
Published: March 2016

In this contribution, we study possible confinement effects on the atomic and electronic structure, and phonon properties of neutral and fully charged oxygen vacancies in BaZrO3 (001) ultra-thin films.
Methane formation mechanism in the initial methanol-to-olefins process catalyzed by SAPO-34
Authors: Wei Zhihong , Chen Yan-Yan , Li Junfen , Wang Pengfei , Jing Buqin , He Yue , Dong Mei , Jiao Haijun , Qin Zhangfeng , Wang Jianguo , Fan Weibin
Published: March 2016

Attempts are made here to unravel the methane formation pathway in the initial MTO process.
The molecular mechanism of palladium-catalysed cyanoesterification of methyl cyanoformate onto norbornene
Authors: Ishitsuka Takuya , Okuda Yasuhiro , Szilagyi Robert K. , Mori Seiji , Nishihara Yasushi
Published: March 2016

Density functional theory-based potential energy surface investigation revealed that the reaction mechanism of palladium-catalysed cyanoesterification onto norbornene (NBE) proceeds through exclusive exo-coordination, regioselective olefin insertion first into the Pd–COOR bond, and reduction elimination to form the subsituted NBE.
The influence of different coordination environments on one-dimensional Cu(ii) coordination polymers for the photo-degradation of organic dyes
Authors: Hussain Navid , Bhardwaj Vimal K.
Published: March 2016

The role of coordination environment in 1D Cu(ii) coordination polymers for photo-catalytic activity has been investigated. Pyridine-2,6-dicarbohydrazide based polymeric complex 3 has the highest photo-catalytic rate constant (k = 0.72 h−1) for rhodamine B degradation.
Coarsening of one-step deposited organolead triiodide perovskite films via Ostwald ripening for high efficiency planar-heterojunction solar cells
Authors: Zhu Weidong , Bao Chunxiong , Wang Yangrunqian , Li Faming , Zhou Xiaoxin , Yang Jie , Lv Bihu , Wang Xiaoyong , Yu Tao , Zou Zhigang
Published: March 2016

The remarkable grain coarsening in one-step deposited OTP films for high efficiency planar-heterojunction perovskite solar cells.
One-step generation of cell-laden microgels using double emulsion drops with a sacrificial ultra-thin oil shell
Authors: Choi Chang-Hyung , Wang Huanan , Lee Hyomin , Kim June Hwan , Zhang Liyuan , Mao Angelo , Mooney David J. , Weitz David A.
Published: March 2016

We present a one-step microfluidic approach to produce monodisperse cell-laden microgels through the use of double emulsion drops with an ultra-thin oil shell as the sacrificial template.
Replicating 3D printed structures into hydrogels
Authors: Chan Ho Nam , Shu Yiwei , Tian Qian , Chen Yangfan , Chen Yin , Wu Hongkai
Published: March 2016

Hydrogels, with a complicated 3D structure, were fabricated by replicating the structure of a 3D printed master.
Dextrin and poly(lactide)-based biocompatible and biodegradable nanogel for cancer targeted delivery of doxorubicin hydrochloride
Authors: Das Dipankar , Patra Priyapratim , Ghosh Paulomi , Rameshbabu Arun Prabhu , Dhara Santanu , Pal Sagar
Published: March 2016

Herein, we report the development and application of a novel biocompatible, chemically crosslinked nanogel for use in anticancer drug delivery.
Copolymerization of propylene with Si-containing α,ω-diolefins: how steric hindrance of diolefins affects long chain branch formation
Authors: Wang Bin , Zhang Yi-Ming , Ma Zhe , Pan Li , Yu Shi-Jun , Li Yue-Sheng
Published: March 2016

A series of long chain branched isotactic polypropylenes (LCBPPs) were in situ synthesized by copolymerization of propylene with diallylsilanes. The substituent groups can efficiently suppress the cyclization of the diolefin and significantly improve LCB formation efficiency.
Doxorubicin carriers based on Au nanoparticles – effect of shape and gold-drug linker on the carrier toxicity and therapeutic performance
Authors: Swiech Olga A. , Opuchlik Lidia J. , Wojciuk Grzegorz , Stepkowski Tomasz M. , Kruszewski Marcin , Bilewicz Renata
Published: March 2016

Gold nanoparticles (AuNPs) prepared by the Turkevich method and near-IR absorbing non-spherical anisotropic nanotriangles (AuNTs) prepared by the thiosulfate method were used for doxorubicin binding.
A ratiometric fluorescent probe for quantification of alkaline phosphatase in living cells
Authors: Lu Zhenxing , Wu Jiasheng , Liu Weimin , Zhang Guangyou , Wang Pengfei
Published: March 2016

A ratiometric fluorescent probe with strong intramolecular charge transfer (ICT) character has been designed for the detection of alkaline phosphatase (ALP).
Cadmium phenylphosphonates: preparation, characterisation and in situ investigation
Authors: Wilke Manuel , Batzdorf Lisa , Fischer Franziska , Rademann Klaus , Emmerling Franziska
Published: March 2016

New and known cadmium phenylphosphonates were prepared mechanochemically and their synthesis mechanism was determinedin situ.
Molecular characteristics of collagen extracted from the starry triggerfish skin and its potential in the development of biodegradable packaging film
Authors: Ahmad Mehraj , Nirmal Nilesh Prakash , Chuprom Julalak
Published: March 2016

Novel biodegradable collagen films from starry trigger skin were fabricated and characterised for food packaging applications.
Magnetic nanoporous hybrid carbon from core–shell metal–organic frameworks for glycan extraction
Authors: Sun N. R. , Yao J. Z. , Wang J. W. , Zhang X. M. , Li Y. , Deng C. H.
Published: March 2016

Magnetic nanoporous carbon (NPC) materials, which can be thoroughly separated from an aqueous solution easily, are very promising adsorbents.
In situ enzymatic formation of supramolecular nanofibers for efficiently killing cancer cells
Authors: Huang Anqing , Ou Caiwen , Cai Yanbin , Wang Zhongyan , Li Hekai , Yang Zhimou , Chen Minsheng
Published: March 2016

Precursors were more toxic to cancer cells than their corresponding gelators.
La2O3 catalysts with diverse spatial dimensionality for oxidative coupling of methane to produce ethylene and ethane
Authors: Jiang Tao , Song Jianjun , Huo Minfeng , Yang NaTing , Liu Jingwei , Zhang Jun , Sun Yuhan , Zhu Yan
Published: March 2016

The La2O3 catalyst with a two-dimensional (2D) structure is more effective than 0D, 1D and 3D La2O3 for oxidative coupling of methane.
Folate-conjugated dually responsive micelles for targeted anticancer drug delivery
Authors: Zhao Lingling , Zhang Yajuan , Shao Jia , Liang Hongze , Na Haining , Zhu Jin
Published: March 2016

Folate-conjugated dual-responsive micelles were developed, sustained and sensitive drug release from the drug loaded micelles was observed. Folate-targeted micelles showed higher anticancer activity and enhanced cellar uptake than non-targeted ones.
Engineered biomimetic nanoabsorbent for cellular detoxification of chemotherapeutics
Authors: Thanh Nguyen Tuyen Duong , Pitchaimani Arunkumar , Koirala Mukund Bahadur , Muhammad Faqir , Aryal Santosh
Published: March 2016

An approach to reduce the nonspecific cytotoxicity of chemotherapeutics has been put-forth using a biomimetic nanoabsorbent (NAb) as a detoxifying agent.
Role of polymeric surfactant in the synthesis of cobalt molybdate nanospheres for hybrid capacitor applications
Authors: Barmi Maryam Jozegholami , Sundaram Manickam Minakshi
Published: March 2016

The role of Pluronic F127 on CoMoO4 and its influence on the electrochemical energy storage have been reported.
Excellent mechanical properties of carbon fiber semi-aligned electrospun carbon nanofiber hybrid polymer composites
Authors: Dhakate S. R. , Chaudhary A. , Gupta A. , Pathak A. K. , Singh B. P. , Subhedar K. M. , Yokozeki T.
Published: March 2016

The excellent mechanical properties of carbon fiber fabric hybrid polymer composites is achieved by integrating continuous semi-aligned carbon nanofiber layers in the interlaminar region between carbon fiber fabric plies.
Ultrahigh sensitivity in the amorphous ZnSnO UV photodetector
Authors: Wang Weihao , Pan Xinhua , Dai Wen , Zeng Yiyu , Ye Zhizhen
Published: March 2016

An ultraviolet photodetector based on α-ZTO exhibits ultrahigh sensitivity and good performance due to the TFTs structure.
Preparation of ORMOSIL nanoparticles conjugated with vitamin D3analogues and their biological evaluation
Authors: González-García Tania , Fernández Susana , Lubian Elisa , Mancin Fabrizio , Ferrero Miguel
Published: March 2016

Dye-doped multifunctional organically modified silica (ORMOSIL) nanoparticles were prepared within surfactant stabilized microemulsions and conjugated with several vitamin D3derivatives.
Sonophysical cost effective rapid indigenous preparation of aluminium particles via exfoliation of aluminium foil
Authors: Manikandan Muthu , Gopal Judy , Chun Sechul
Published: March 2016

Sonophysical cost effective rapid synthesis of Al particles.
Study on the cross-linking effect of a natural derived oxidized chitosan oligosaccharide on the porcine acellular dermal matrix
Authors: Chen Yining , Dan Nianhua , Wang Lei , Liu Xinhua , Dan Weihua
Published: March 2016

The purpose of this study is to investigate the cross-linking interaction between a natural derived oxidized chitosan oligosaccharide (OCOS) and the porcine acellular dermal matrix (pADM), and further evaluate the varying properties of the pADM after cross-linked.
The static and dynamic magnetic properties of monolayer iron dioxide and iron dichalcogenides
Authors: Lan Mu , Xiang Gang , Nie Ya , Yang Dingyu , Zhang Xi
Published: March 2016

The electronic structures, and static and dynamic magnetic properties of monolayer iron dioxide and iron dichalcogenides are investigated using first-principle calculations in conjunction with MC simulation and atomic spin dynamics simulation.
Structural and magnetic properties of heptacoordinated MnII complexes containing a 15-membered pyridine-based macrocycle and halido/pseudohalido axial coligands
Authors: Drahoš Bohuslav , Herchel Radovan , Trávníček Zdeněk
Published: March 2016

Heptacoordinated MnII compounds with a pentadentate 15-membered pyridine-based macrocycle and two axially coordinated halido/pseudohalido coligands, having a monomeric or polymeric composition, were investigated.
Rapid and morphology controlled synthesis of anionic S-doped TiO2 photocatalysts for the visible-light-driven photodegradation of organic pollutants
Authors: Bakar Shahzad Abu , Ribeiro Caue
Published: March 2016

In recent years, growing concerned has been raised to the global problem of the drainage of organic pollutants into water steams.
Nanostructured surface of electrospun PCL/dECM fibres treated with oxygen plasma for tissue engineering
Authors: Jeon HoJun , Lee JaeYoon , Lee Hyeongjin , Kim Geun Hyung
Published: March 2016

Nanoscale patterns on the surface of PCL-based dECM were developed by a selective plasma treatment.
Diselenide-based probe for the selective imaging of hypochlorite in living cancer cells
Authors: Kim Youngsam , Choi Minsuk , Manjare Sudesh T. , Jon Sangyong , Churchill David G.
Published: March 2016

A non-traditional and robust probe skeleton was derivatized for chemosensing applications to investigate a potential novel mode of hypochlorite detection.
Design and sol–gel preparation of a six-layer tri-wavelength ORMOSIL antireflective coating for a high power laser system
Authors: Zhang Huijun , Hu Xingyu , Sun Yingying , Zheng Yanmei , Yan Lianghong , Jiang Bo , Chen Hanxian , Zhang Xinxiang
Published: March 2016

A six-layer tri-wavelength antireflective coating was prepared from organically modified silicate sols by the sol–gel process.
The role of phase behavior in the enzyme catalyzed synthesis of glycerol monolaurate
Authors: Baum Sören , Ritter Eric , Smirnova Irina , Schilling Martin , Liese Andreas
Published: March 2016

Partial glycerides such as monoacylglycerides (MAGs) are important functional ingredients with various applications in the cosmetics and food industry.
Antibacterial studies and statistical design set data of quasi zinc oxide nanostructures
Authors: Wahab Rizwan , Khan Farheen , Mishra Yogendra Kumar , Musarrat Javed , Al-Khedhairy Abdulaziz A.
Published: March 2016

The analytical techniques employed for the ZnO nanostructures, which showed potential effect on bacteria's (E. coli, S. aureus and K. pneumoniae) growth. The recorded spectra obtained at 600 nm by UV-vis spectrophotometry.
A unified approach to pyrrole-embedded aza-heterocyclic scaffolds based on the RCM/isomerization/cyclization cascade catalyzed by a Ru/B-H binary catalyst system
Authors: Inamdar Suleman M. , Chakrabarty Indradweep , Patil Nitin T.
Published: March 2016

An easy and straightforward preparation of pyrrole-embedded aza-heterocyclic scaffolds employing a Ru/B-Hbinary catalyst system has been developed.
Residue dependent hydrogen-bonding preferences in orthanilic acid-based short peptide β-turn motifs
Authors: Jedhe Ganesh S. , Vijayadas Kuruppanthara N. , Kotmale Amol S. , Sangtani Ekta , Shinde Dinesh R. , Gonnade Rajesh G. , Rajamohanan Pattuparambil R. , Sanjayan Gangadhar J.
Published: March 2016

This communication describes the competition between native β-turn (C10) and 2-aminobenzenesulfonic acid (SAnt)(orthanilic acid)-based pseudo β-turn (C11) in their hybrid peptides.
Investigating into the liquid oxygen compatibility of a modified epoxy resin containing silicon/phosphorus and its mechanical behavior at cryogenic temperature
Authors: Peng Cong , Li Jialiang , Wu Zhanjun , Peng Weibin , Zhou Dayu
Published: March 2016

A 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) derivative (DOPO–TVS) was synthesized through a reaction between DOPO and triethoxyvinylsilane (TVS).
Magnetically separable Fe3O4@chitin as an eco-friendly nanocatalyst with high efficiency for green synthesis of 5-substituted-1H-tetrazoles under solvent-free conditions
Authors: Zarghani Monireh , Akhlaghinia Batool
Published: March 2016

Eco-friendly Fe3O4@chitin nanocatalyst was prepared, characterized and applied for synthesis of 5-substituted-1H-tetrazoles in a green media.
Long-afterglow metal–organic frameworks: reversible guest-induced phosphorescence tunability
Authors: Yang Xiaogang , Yan Dongpeng
Published: March 2016

We report that two types of Zn-terephthalate (TPA) MOFs (namely [Zn(TPA)(DMF)] (1-DMF) and MOF-5) could exhibit an obvious room-temperature afterglow emission with a time-resolved luminescence lifetime as high as 0.47 seconds.
Unified low‐layer power allocation and high‐layer mode control for video delivery in device‐to‐device network with multi‐antenna relays
Authors: Wang Qin , Wang Wei , Jin Shi , Zhu Hongbo , Zhang Nai Tong
Published: March 2016

This study proposes a quality‐driven approach that jointly selects the frequency reuse mode of device‐to‐device (D2D) links at lower layers, the video coding mode of frames, and multiple paths at higher layers for multimedia transmission in a cellular network with multi‐antenna relays placed at the intersection of adjacent cells. Based on power control of the shared relay, the user‐centered mode selection problem is formulated by maximising the quality of service (QoS) with total energy consumption constrained. Underlay mode and overlay mode are both considered. For each frame, one coding mode (I, P, or B) and multiple paths (cellular links and/or D2D links with/without relays) are selected to optimise the received video quality expectation. Different retransmission polices are considered to give higher protection levels to paths with higher transmission rates. The authors’ evaluation shows that the proposed unified power allocation and mode control scheme could enhance the perceived QoS as changing the energy constraint and the distances of different paths. The underlay mode is optimal in most cases. It provides evidences that it is not always the best to code all frames as I‐frames, to initialise the relay transmission power as the maximum, or to select one single path for video transmission.
Synchrophasor measurement‐based fault location technique for multi‐terminal multi‐section non‐homogeneous transmission lines
Authors: Wu Ting , Chung Chi‐Yung , Kamwa Innocent , Li Jiayong , Qin Mingwen
Published: March 2016

This study presents a fault‐location technique for multi‐terminal multi‐section non‐homogeneous transmission lines which combine overhead lines with underground power cables, by using voltage and current synchrophasors obtained from phasor measurement units. First, a faulty line branch is selected to narrow down the suspected faulty area. Then, the faulty section and the exact fault location can be identified by calculating the normalised fault distance for each section on the selected faulty branch. Computational burden of the proposed analytical scheme is very low because it avoids iterative computations. Promising simulation results show that the proposed fault location technique can accurately locate the fault regardless of the fault type, fault resistance, fault location, pre‐fault loading and line parameters inaccuracies.
Constant‐frequency shoot‐through sine pulse‐width‐modulation scheme for three‐phase single‐input–hybrid‐output converter
Authors: Ray Olive , Mishra Santanu
Published: March 2016

Single‐input–hybrid‐output converters provide dc and ac outputs simultaneously from a single dc source in an integrated architecture. These topologies are well suited for applications comprising both dc and ac distribution buses. In this work, the three‐phase boost‐derived hybrid converter (3‐φ BDHC) has been studied which provides a 3‐φ ac output in addition to the step‐up output obtained from a boost converter. The changes in design and the characteristic behaviour of the proposed BDHC topology have been studied in comparison to single‐phase BDHC. The pulse‐width‐modulation (PWM) control associated with these topologies involves shoot‐through states incorporated within the conventional sine‐PWM strategies. The work proposes a PWM switching strategy with controllable shoot‐through occurring at constant frequency to achieve lower inductor current ripple. The operating principle of the 3‐φ BDHC under balanced‐load conditions using the proposed constant‐frequency shoot‐through sine PWM has been validated using experimental results.
Steady‐state and small‐signal models of a three‐phase quasi‐Z‐source AC–DC converter for wind applications
Authors: Kala‐Konga C.L. , Gitau M.N. , Bansal R.C.
Published: March 2016

The three‐phase quasi‐Z‐source AC–DC converter possesses many attractive attributes for applications with wide AC input variations, such as variable speed wind generator applications. This is due to its buck–boost capability, high input power factor, low output ripple and low rating of components. Detailed steady‐state and small‐signal models of the converter are derived using circuit averaging and the synchronous reference frame. From the steady‐state model, it is shown that the three‐phase quasi‐Z‐source rectifier (QZSR) has all the advantages of the three‐phase Z‐source rectifier (ZSR) as well as further advantages such as lower rated capacitors. The small‐signal model reveals that the QZSR has non‐minimum‐phase zeroes in its control‐to‐output voltage and control‐to‐inductor L1 current transfer‐function similar to the ZSR. Right‐half‐plane zeroes tend to limit the maximum control bandwidth and destabilise the wide‐bandwidth feedback loop. The key elements in the design of a closed‐loop controller, namely, the transfer functions and the block diagram models are derived. Simulations and experimental results are presented to validate the models developed.
Artificial neural network‐based modelling of compensated multi‐crystalline solar‐grade silicon under wide temperature variations
Authors: Patra Jagdish Chandra , Modanese Chiara , Acciarri Maurizio
Published: March 2016

In recent years, multi‐crystalline solar grade silicon (mc‐SoG‐Si), instead of expensive electronic‐grade Si, is being considered in photovoltaic industry for production of solar modules. These materials usually contain a comparable amount of acceptors (e.g. boron) and donors (e.g. phosphorus) and are therefore called compensated mc‐SoG‐Si. The electrical parameters, e.g. majority carrier mobility (μ), majority carrier density (p) and resistivity (ρ), of compensated mc‐SoG‐Si which affect performance of the solar cells vary non‐linearly with temperature due to several complex mechanisms. In this study, the authors propose artificial neural network (ANN)‐based models to predict the three electrical parameters of mc‐SoG‐Si material. Using a limited amount of measurement data, the authors have shown that the ANN‐based models can predict the three electrical parameters of a given sample over a wide temperature range of 70–400 K and a specific range of compensation ratio. The authors have shown with extensive simulated results that these models can predict the three parameters with a maximum error of ±10%.
Integration of renewable distributed generators into the distribution system: a review
Authors: Adefarati T. , Bansal R.C.
Published: March 2016

Recent advances in renewable energy technologies and changes in the electric utility infrastructures have increased the interest of the power utilities in utilisation of distributed generation (DG) resources to generate electricity. The recent trends in the development and utilisation of DG resources for power generation application are subject to the deregulation of the electric power sector and technical constraints to extend distribution and transmission networks to some areas. The electric power system planners, regulators and the policy makers have derived many benefits from integration of DG units into the distribution networks. These benefits depend on the characteristics of DG units such as photovoltaic (PV), wind system and reciprocating engines, characteristics of the loads, local renewable resources and network configuration. This study comprehensively reviews various research works on the technical, environmental and economic benefits of renewable DG integration such as line‐loss reduction, reliability improvement, economic benefits and environmental pollution optimisation. These benefits can be optimised if all the renewable DG units are optimally sized, located and configured. This study also reviews the current status of renewable DG technologies based on different characteristics and the operational issues of integration of renewable DG into the electric power systems.
Islanding detection technique based on inverse hyperbolic secant function
Authors: Sareen Karan , Bhalja Bhavesh R. , Maheshwari Rudra P.
Published: March 2016

This study presents an inverse hyperbolic secant function based islanding detection technique for distribution network containing various types of distributed generations. The proposed scheme is based on rate of change of inverse hyperbolic secant function of negative sequence voltage signal. Different non‐islanding events along with various islanding conditions have been simulated by modelling IEEE 34‐bus system using PSCAD/EMTDC software package. The proposed scheme is able to detect islanding condition even with zero active and reactive power mismatches. Moreover, it eliminates non‐detection zone completely and at the same time also remains stable during diversified non‐islanding events including change in network topology. The simulation results indicate that the proposed scheme not only detects islanding condition rapidly, but also provides better stability in case of critical non‐islanding events during which most of the existing schemes issue nuisance tripping. Furthermore, comparative evaluation of the proposed scheme with the recently proposed techniques in the literature clearly indicates superiority of the proposed scheme. At the end, issues related to practical implementation of the proposed scheme have also been discussed.
Hierarchical porous ZnMn2O4 derived from cotton substance as high‐performance lithium ion battery anode
Authors: Zhao Chenhao , Shen Ye , Qiu Sheng'en , Hu Zhibiao , Liu Kaiyu
Published: March 2016

Hierarchical porous ZnMn2O4 has been prepared by an initial cotton template and subsequent calcination route. The as‐prepared hierarchical porous ZnMn2O4 composed of numerous nanoparticles well inherit the fibre‐like structure of cotton, and these nanoparticles have a size of ∼20–50 nm. The N2 adsorption–desorption test indicates this ZnMn2O4 has a Brunauer–Emmett–Teller surface area of ∼16.7084 m2 g−1 and average pore size of ∼27.0 nm. As lithium ion battery anodes, the ZnMn2O4 can deliver a discharge capacity of 674.9 mAh g−1 after 200 cycles at current density of 200 mA g−1. Even at 1000 mA g−1, this ZnMn2O4 still shows a stable discharge capacity of 541.5 mAh g−1. These promising electrochemical performances may be attributed to its unique hierarchical porous structure which helps to accelerate the ions transportation and elevate the structure stability.
Der Gordische Knoten
Authors: Wildner M.
Published: March 2016

Der sprichwörtliche Gordische Knoten hat seinen historisch-mythologischen Bezug zu König Gordios von Phrygien in der heutigen Zentraltürkei. Die Deichsel seines Wagens war mit kunstvoll verschlungenen Seilen mit dem Zugjoch für die Pferde verbunden. Nach seiner Prophezeiung würde derjenige, der diesen Knoten zu lösen vermochte, die Herrschaft über Kleinasien erringen. Alexander der Große löste im Jahr 333 v. Chr. diese Aufgabe auf seine Weise: Er durchschlug den Knoten mit dem Schwert und eroberte Kleinasien, das persische Großreich und gelangte bis an den Indus. Zumindest ist das die Variante des Plutarch. Arrian beruft sich in seiner Überlieferung auf einen Begleiter Alexanders, Aristobulos von Kassandreia. In dessen Alexander-Vita soll dieser den Knoten schlau dadurch gelöst haben, dass er den Deichselnagel herauszog und damit das Joch wegziehen konnte.
Effect of spanwise shear on flow past a square cylinder at intermediate Reynolds numbers
Authors: Visakh M. G. , Saha Arun K. , Muralidhar K.
Published: March 2016

Three-dimensional numerical simulation of flow past a square cylinder with linear spanwise shear has been performed in the Reynolds numbers range of 165-250. Navier-Stokes equations are discretized using second order central differencing for both advection and diffusion terms, explicitly marching in time using the second order Adams-Bashforth scheme. The solution methodology used is the Simplified Marker and Cell algorithm. Spanwise shear is simulated by providing a linear variation in the inlet velocity profile along the spanwise direction and the resulting wake characteristics are compared with uniform inflow. Presence of mode-A, mode-B, and large scale vortical irregularities of two-sided symmetrical vortex dislocations is detected when the inflow is uniform. With shear, oblique and cellular vortex shedding are identified for the square cylinder. Shedding frequency of the vortices varies in a stepwise manner along the span, giving rise to local cells of constant frequency. Constant frequency cell sizes are found to be longer for a square cylinder in shear flow as compared to the circular one. Spanwise shear leads to vortex splitting and one-sided vortex dislocation, contrary to the naturally occurring two-sided vortex dislocation for uniform flow. Reynolds number dependence of spanwise shear flow is studied by comparing wake dynamics at three mid-span Reynolds numbers of 165, 200, and 250 with a shear parameter of 0.025. With an increase in the average Reynolds number, cell sizes decrease and dislocations become irregular in space and time. Simulations with three different shear parameters of 0.0125, 0.025, and 0.05 have been carried out for an average Reynolds number of 250. With an increase in the shear parameter, the frequency of occurrence of vortex dislocations increases in the wake. In addition, obliqueness of the primary vortices and the number of cells also show an increase.
Extending the density functional embedding theory to finite temperature and an efficient iterative method for solving for embedding potentials
Authors: Huang Chen
Published: March 2016

A key element in the density functional embedding theory (DFET) is the embedding potential. We discuss two major issues related to the embedding potential: (1) its non-uniqueness and (2) the numerical difficulty for solving for it, especially for the spin-polarized systems. To resolve the first issue, we extend DFET to finite temperature: all quantities, such as the subsystem densities and the total system’s density, are calculated at a finite temperature. This is a physical extension since materials work at finite temperatures. We show that the embedding potential is strictly unique at T > 0. To resolve the second issue, we introduce an efficient iterative embedding potential solver. We discuss how to relax the magnetic moments in subsystems and how to equilibrate the chemical potentials across subsystems. The solver is robust and efficient for several non-trivial examples, in all of which good quality spin-polarized embedding potentials were obtained. We also demonstrate the solver on an extended periodic system: iron body-centered cubic (110) surface, which is related to the modeling of the heterogeneous catalysis involving iron, such as the Fischer-Tropsch and the Haber processes. This work would make it efficient and accurate to perform embedding simulations of some challenging material problems, such as the heterogeneous catalysis and the defects of complicated spin configurations in electronic materials.
Characterization of a time-resolved non-contact scanning diffuse optical imaging system exploiting fast-gated single-photon avalanche diode detection
Authors: Di Sieno Laura , Wabnitz Heidrun , Pifferi Antonio , Mazurenka Mikhail , Hoshi Yoko , Dalla Mora Alberto , Contini Davide , Boso Gianluca , Becker Wolfgang , Martelli Fabrizio , Tosi Alberto , Macdonald Rainer
Published: March 2016

We present a system for non-contact time-resolved diffuse reflectance imaging, based on small source-detector distance and high dynamic range measurements utilizing a fast-gated single-photon avalanche diode. The system is suitable for imaging of diffusive media without any contact with the sample and with a spatial resolution of about 1 cm at 1 cm depth. In order to objectively assess its performances, we adopted two standardized protocols developed for time-domain brain imagers. The related tests included the recording of the instrument response function of the setup and the responsivity of its detection system. Moreover, by using liquid turbid phantoms with absorbing inclusions, depth-dependent contrast and contrast-to-noise ratio as well as lateral spatial resolution were measured. To illustrate the potentialities of the novel approach, the characteristics of the non-contact system are discussed and compared to those of a fiber-based brain imager.
Flow-induced voltage generation by moving a nano-sized ionic liquids droplet over a graphene sheet: Molecular dynamics simulation
Authors: Shao Qunfeng , Jia Jingjing , Guan Yongji , He Xiaodong , Zhang Xiaoping
Published: March 2016

In this work, the phenomenon of the voltage generation is explored by using the molecular dynamics simulations, which is performed by driving a nano-sized droplet of room temperature ionic liquids moving along the monolayer graphene sheet for the first time. The studies show that the cations and anions of the droplet will move with velocity nonlinearly increasing to saturation arising by the force balance. The traditional equation for calculating the induced voltage is developed by taking the charge density into consideration, and larger induced voltages in μV-scale are obtained from the nano-size simulation systems based on the ionic liquids (ILs) for its enhanced ionic drifting velocities. It is also derived that the viscosity acts as a reduction for the induced voltage by comparing systems composed of two types of ILs with different viscosity and temperature.
Long range stress correlations in the inherent structures of liquids at rest
Authors: Chowdhury Sadrul , Abraham Sneha , Hudson Toby , Harrowell Peter
Published: March 2016

Simulation studies of the atomic shear stress in the local potential energy minima (inherent structures) are reported for binary liquid mixtures in 2D and 3D. These inherent structure stresses are fundamental to slow stress relaxation and high viscosity in supercooled liquids. We find that the atomic shear stress in the inherent structures (IS’s) of both liquids at rest exhibits slowly decaying anisotropic correlations. We show that the stress correlations contribute significantly to the variance of the total shear stress of the IS configurations and consider the origins of the anisotropy and spatial extent of the stress correlations.
Electron parallel closures for various ion charge numbers
Authors: Ji Jeong-Young , Kim Sang-Kyeun , Held Eric D. , Na Yong-Su
Published: March 2016

Electron parallel closures for the ion charge number Z = 1 [J.-Y. Ji and E. D. Held, Phys. Plasmas 21, 122116 (2014)] are extended for 1 ≤ Z ≤ 10. Parameters are computed for various Z with the same form of the Z = 1 kernels adopted. The parameters are smoothly varying in Z and hence can be used to interpolate parameters and closures for noninteger, effective ion charge numbers.