bluuebunny/crossref_metadata_2025 huggingface dataset:
Imidazolium functionalized carbon nanotubes for the synthesis of cyclic carbonates: reducing the gap between homogeneous and heterogeneous catalysis
Authors: Buaki-Sogó M. , Vivian A. , Bivona L. A. , García H. , Gruttadauria M. , Aprile C.
Published: September 2016

Single walled carbon nanotubes were functionalized with imidazolium based salts and successfully used as catalysts for the conversion of CO2. The novel materials displayed excellent catalytic activity.
C–H bond cyanation of arenes using N,N-dimethylformamide and NH4HCO3 as a CN source over a hydroxyapatite supported copper catalyst
Authors: Venu Boosa , Vishali Bilakanti , Naresh Gutta , Kumar Velisoju Vijay , Sudhakar Medak , Kishore Ramineni , Beltramini Jorge , Konarova Muxina , Venugopal Akula
Published: September 2016

Copper dispersed on Ca5(PO4)3OH has been identified as an excellent heterogeneous catalyst for the in situ generation of ‘CN’ from NH4HCO3 and N,N-dimethylformamide, in the C–H bond activation of 2-phenylpyridine.
Pd@Zn core–shell nanoparticles of controllable shell thickness for catalytic methanol production
Authors: Liao Fenglin , Wu Xin-Ping , Zheng Jianwei , Li Meng-Jung , Zeng Ziyan , Hong Xinling , Kroner Anna , Yuan Youzhu , Gong Xue-Qing , Tsang Shik Chi Edman
Published: September 2016

A novel synthesis method of nano-Pd@Zn core–shell structures with controllable shell thickness showing remarkable catalytic performance in CO2hydrogenation.
CO2 adsorption-induced structural changes in coordination polymer ligands elucidated via molecular simulations and experiments
Authors: Meza-Morales Paul J. , Gómez-Gualdrón Diego A. , Arrieta-Perez Rodinson R. , Hernández-Maldonado Arturo J. , Snurr Randall Q. , Curet-Arana María C.
Published: September 2016

Molecular simulations and experiments were used to elucidate guest-induced structural changes in the coordination polymer CPL-2.
3D Co3O4@MnO2heterostructures grown on a flexible substrate and their applications in supercapacitor electrodes and photocatalysts
Authors: Zheng Xin , Han Zhicheng , Yang Wenjin , Qu Fengyu , Liu Baodan , Wu Xiang
Published: September 2016

In this work, flexible 3D Co3O4@MnO2heterostructures have been successfully obtained without using any surfactants.
Demonstration of intramolecular energy transfer in asymmetric bimetallic ruthenium(ii) complexes
Authors: Bar Manoranjan , Maity Dinesh , Das Shyamal , Baitalik Sujoy
Published: September 2016

Asymmetric bimetallic Ru(ii) complexes exhibit photo-induced intramolecular energy transfer with rate constant values on the order of 107 s−1.
Leveraging valuable synergies by combining alloying and conversion for lithium-ion anodes
Authors: Bresser Dominic , Passerini Stefano , Scrosati Bruno
Published: September 2016

This article provides the first comprehensive review of the most recent class of lithium-ion battery materials, hosting lithium by a combined conversion/alloying mechanism.
Integrated hybrid life cycle assessment and supply chain environmental profile evaluations of lead-based (lead zirconate titanate) versus lead-free (potassium sodium niobate) piezoelectric ceramics
Authors: Ibn-Mohammed T. , Koh S. C. L. , Reaney I. M. , Acquaye A. , Wang D. , Taylor S. , Genovese A.
Published: September 2016

Contrary to conventional knowledge, LCA of PZT vs. KNN indicates the presence of niobium in KNN constitutes far greater impact across all the 16 categories considered in comparison with PZT. The increased environmental impact of KNN occurs in the early stages of the LCA due to raw material extraction and processing.
Formation of trihalomethanes and haloacetic acids during chlorination of functionalized carbon nanotubes
Authors: Verdugo Edgard M. , Nelson Kyle J. , Bako Christian M. , Valentine Richard L. , Cwiertny David M.
Published: September 2016

Carbon nanotubes represent precursors for disinfection byproducts during chlorination, where the extent of formation is linked to their surface chemistry.
In situ spectroscopic monitoring of CO2 reduction at copper oxide electrode
Authors: Wang Liying , Gupta Kalyani , Goodall Josephine B. M. , Darr Jawwad A. , Holt Katherine B.
Published: September 2016

Copper oxide modified electrodes were investigated as a function of applied electrode potential using in situ infrared spectroscopy and ex situ Raman and X-ray photoelectron spectroscopy. In deoxygenated KHCO3 electrolyte bicarbonate and carbonate species were found to adsorb to the electrode during reduction and the CuO was reduced to Cu(i) or Cu(0) species. Carbonate was incorporated into the structure and the CuO starting material was not regenerated on cycling to positive potentials. In contrast, in CO2 saturated KHCO3 solution, surface adsorption of bicarbonate and carbonate was not observed and adsorption of a carbonato-species was observed with in situ infrared spectroscopy. This species is believed to be activated, bent CO2. On cycling to negative potentials, larger reduction currents were observed in the presence of CO2; however, less of the charge could be attributed to the reduction of CuO. In the presence of CO2 CuO underwent reduction to Cu2O and potentially Cu, with no incorporation of carbonate. Under these conditions the CuO starting material could be regenerated by cycling to positive potentials.
Relating rheology and tribology of commercial dairy colloids to sensory perception
Authors: Laguna Laura , Farrell Grace , Bryant Michael , Morina Ardian , Sarkar Anwesha
Published: September 2016

This study aims to investigate the relationship between rheological and tribological properties of commercial full fat and fat-free/low fat versions of liquid and soft solid colloidal systems (milk, yoghurt, soft cream cheese) with their sensory properties.
Furfurylamines from biomass: transaminase catalysed upgrading of furfurals
Authors: Dunbabin Alice , Subrizi Fabiana , Ward John M. , Sheppard Tom D. , Hailes Helen C.
Published: September 2016

A biocatalytic approach using transaminases has been used for the generation of a range of furfurylamines in good yields.
Supercritical water hydrolysis: a green pathway for producing low-molecular-weight cellulose
Authors: Buffiere Jean , Ahvenainen Patrik , Borrega Marc , Svedström Kirsi , Sixta Herbert
Published: September 2016

A pathway to produce narrowly distributed low-molecular-weight cellulose by hydrolysis of microcrystalline cellulose using supercritical water.
Spectroscopic evidence for the role of a site of the di-iron catalytic center of ferritins in tuning the kinetics of Fe(ii) oxidation
Authors: Ebrahimi Kourosh Honarmand , Bill Eckhard , Hagedoorn Peter-Leon , Hagen Wilfred R.
Published: September 2016

Spectroscopic studies of human H-type ferritin in comparison with an archaeal ferritin fromPyrococcus furiosusreveal how kinetics of a common mechanism of Fe(ii) oxidation is tuned differently in these two ferritins.
Characterization of human pineal gland proteome
Authors: Yelamanchi Soujanya D. , Kumar Manish , Madugundu Anil K. , Gopalakrishnan Lathika , Dey Gourav , Chavan Sandip , Sathe Gajanan , Mathur Premendu P. , Gowda Harsha , Mahadevan Anita , Shankar Susarla K. , Prasad T. S. Keshava
Published: September 2016

We employed a high-resolution mass spectrometry-based approach to characterize the proteome of the human pineal gland.
Design, synthesis and anticancer activity of dihydropyrimidinone–semicarbazone hybrids as potential human DNA ligase 1 inhibitors
Authors: Sashidhara Koneni V. , Singh L. Ravithej , Shameem Mohammad , Shakya Sarika , Kumar Anoop , Laxman Tulsankar Sachin , Krishna Shagun , Siddiqi Mohammad Imran , Bhatta Rabi S. , Banerjee Dibyendu
Published: September 2016

A series of rationally designed new class of hLig1 inhibitors with potentin vitroanti-cancer properties is presented.
Thermoresponsive low-power light upconverting polymer nanoparticles
Authors: Thévenaz David C. , Monguzzi Angelo , Vanhecke Dimitri , Vadrucci Roberto , Meinardi Francesco , Simon Yoan C. , Weder Christoph
Published: September 2016

Low-power upconverting nanoparticles are presented that display highly efficient, temperature-dependent green to blue upconversion under aerated aqueous conditions. These features are useful for live cell and in vivo temperature sensing.
Structure–activity studies of non-steroid analogues structurally-related to neuroprotective estrogens
Authors: Qian Mingxing , Engler-Chiurazzi Elizabeth B. , Lewis Sara E. , Rath Nigam P. , Simpkins James W. , Covey Douglas F.
Published: September 2016

Estrone and 17β-estradiol are phenolic steroids that are known to be neuroprotective in multiple models of neuronal injury.
Copper-catalyzed oxidative cyclization of vinyl azides with benzylic Csp3–H bonds for the synthesis of substituted phenanthridines
Authors: Yang Jun-Cheng , Zhang Jin-Jiang , Guo Li-Na
Published: September 2016

A copper-catalyzed oxidative cyclization of vinyl azides with benzylic Csp3–H bondsviaa tandem dual C–H functionalization process has been developed. This reaction allows access to substituted phenanthridines containing a variety of functional groups.
Group interval-controlled polymers: an example of epoxy functional polymers via step-growth thiol–yne polymerization
Authors: Zheng Yaochen , Cai Shengying , Peng Li , Jin Yu , Xu Han , Weng Zhulin , Gao Zhengguo , Zhao Bo , Gao Chao
Published: September 2016

Here, we successfully synthesized a series of epoxy GICPs via one-step UV-triggered thiol–yne polymerization of commercial glycidyl propargyl ether and dithiols at 0 °C..
Polymer-inorganic hybrid nanoparticles of various morphologies via polymerization-induced self assembly and sol–gel chemistry
Authors: Teo Guo Hui , Kuchel Rhiannon P. , Zetterlund Per B. , Thickett Stuart C.
Published: September 2016

The preparation of polymer-silica hybrid nanoparticles of various morphologies is reported.
Mesoporous SiO2/carbon hollow spheres applied towards a high rate-performance Li-battery anode
Authors: Wang Chien-Wen , Liu Kung-Wen , Chen Wei-Fu , Zhou Jing-De , Lin Hong-Ping , Hsu Chun-Han , Kuo Ping-Lin
Published: September 2016

The continuous carbon network and the fast transport of Li ions through the SiO2 shell contribute to a high-rate performance.
Self-assembly of two supramolecular indium(iii) metal–organic frameworks for reversible iodine capture and large band gap change semiconductor behavior
Authors: Du Xi , Fan Ruiqing , Fan Jizhuang , Qiang Liangsheng , Song Yang , Dong Yuwei , Xing Kai , Wang Ping , Yang Yulin
Published: September 2016

Conjunction of benzimidazole and metal In(iii) to construct supramolecular MOFs opens up an ingenious direction for synthesizing materials with multi-functionality.
Sorption discrimination between secondary alcohol enantiomers by chiral alkyl-dicarboxylate MOFs
Authors: Satska Yulia A. , Mikhalyova Elena A. , Chernenko Zhanna V. , Kolotilov Sergey V. , Zeller Matthias , Komarov Igor V. , Tymtsunik Andriy V. , Tolmachev Andrey , Gavrilenko Konstantin S. , Addison Anthony W.
Published: September 2016

The coordination polymers withtrans-(S,S)-1,2-cyclopropane dicarboxylate or (1R,3S)-camphorate contain only one polar group in close proximity to the asymmetric C atom but show different sorption of (R) or (S) isomers of 2-butanol.
Silymarin nanoparticles through emulsion solvent evaporation method for oral delivery with high antioxidant activities, bioavailability, and absorption in the liver
Authors: Zhao Xiuhua , Deng Yiping , Zhang Ying , Zu Yuangang , Lian Bolin , Wu Mingfang , Zu Chang , Wu Weiwei
Published: September 2016

Silymarin (SM), a well-known hepatoprotective drug, is widely used to treat liver disorders. Silymarin nanoparticles (SMNs) were prepared through emulsion solvent evaporation and freeze-drying methods to improve their solubility.
Facile synthesis of ZnCo2O4 mesoporous structures with enhanced electrocatalytic oxygen evolution reaction properties
Authors: Zhang Jingchao , Zhang Daojun , Yang Yujing , Ma Jingyu , Cui Shufang , Li Yanmei , Yuan Baiqing
Published: September 2016

Mesoporous ZnCo2O4 micro-spindles exhibit good performance on water splitting with high activity and stability in an alkaline electrolyte.
Synthesis of a hierarchical MoSe2/C hybrid with enhanced electrochemical performance for supercapacitors
Authors: Ma Lin , Xu Limei , Zhou Xiaoping , Xu Xuyao , Zhang Lingling
Published: September 2016

A facile one-step hydrothermal strategy was successfully developed to fabricate a 3D hierarchical MoSe2/C hybrid with triethylene glycol as a structure-directing agent and carbon source.
In situ synthesis of amorphous titanium dioxide supported RuO2as a carbon-free cathode for non-aqueous Li–O2batteries
Authors: Kim Jisu , Kim Yeon , Wu Mihye , Yoon Dae-Ho , Kang Yongku , Jung Ha-Kyun
Published: September 2016

Amorphous TiO2supported crystalline RuO2(a-TiO2/c-RuO2hybrid) enhanced battery performance, and this enhancement was attributed to the crystallinity of the TiO2that amorphous TiO2is more electrochemically active toward ORR/OER than crystalline TiO2.
Influence of graphene/ferriferrous oxide hybrid particles on the properties of nitrile rubber
Authors: Zhang Zhao , He Xianru , Zhang Jiajie , Lu Xiaobin , Yang Chunhua , Liu Tao , Wang Xin , Zhang Rui
Published: September 2016

Graphene/Fe3O4 hybrid particles synthesized by co-precipitation can be finely dispersed in NBR as fewer-layered sheets, resulting in great improvement on mechanical property of NBR composite even at very low filler content.
Nanocomposite films based on cellulose acetate/polyethylene glycol/modified montmorillonite as nontoxic active packaging material
Authors: Saha Nayan Ranjan , Sarkar Gunjan , Roy Indranil , Bhattacharyya Amartya , Rana Dipak , Dhanarajan Gunaseelan , Banerjee Rajdeb , Sen Ramkrishna , Mishra Roshnara , Chattopadhyay Dipankar
Published: September 2016

Nontoxic biodegradable nanocomposite as active packaging applications.
Triphenylamine based lab-on-a-molecule for the highly selective and sensitive detection of Zn2+ and CN− in aqueous solution
Authors: Sun Shichao , Shu Qinghai , Lin Pengchao , Li Yanyue , Jin Shaohua , Chen Xin , Wang Dequan
Published: September 2016

A triphenylamine based lab-on-a-molecule TATP was designed and synthesized as a bifunctional sensor for the detection of Zn2+ and CN− through fluorescence and UV-Vis absorption channels, with detection limits of 14 nM and 0.37 μM, respectively.
Catalytic removal of organic colorants from water using some transition metal oxide nanoparticles synthesized under sunlight
Authors: Shanker Uma , Jassal Vidhisha , Rani Manviri
Published: September 2016

The novelty of the work lies in utilizing the sunlight irradiated, green synthesis of TMO nanoparticles, and their potential in simulated water treatment.
The role of fluids in high-pressure polymorphism of drugs: different behaviour of β-chlorpropamide in different inert gas and liquid media
Authors: Zakharov B. A. , Seryotkin Y. V. , Tumanov N. A. , Paliwoda D. , Hanfland M. , Kurnosov A. V. , Boldyreva E. V.
Published: September 2016

Compression of β-chlorpropamide gives different phases depending on the choice of non-dissolving pressure-transmitting fluid (paraffin, neon and helium).
Assembly of neutral conjugated polymers with layered double hydroxide nanosheets by the layer-by-layer method
Authors: Zhang Ping , Li Hailong , Shi Jingjing , Lu Jun
Published: September 2016

This article reports that the neutral conjugated polymers (NCPs) can also be assembled with exfoliated MgAl-layered double hydroxide (LDH) nanosheets to form the ordered inorganic/organic hybrid ultrathin films via the LbL assembly technique.
Illumina MiSeq sequencing reveals the community composition of NirS-Type and NirK-Type denitrifiers in Zhoucun reservoir – a large shallow eutrophic reservoir in northern China
Authors: Zhou Shilei , Huang Tinglin , Zhang Chunhua , Fang Kaikai , Xia Chao , Bai Shiyuan , Zeng Mingzheng , Qiu Xiaopeng
Published: September 2016

Denitrification is a major biological process that reduces nitrate to nitrogen gas (N2or N2O).
Kinetic analysis of low concentration CO detection by Au-loaded cerium oxide sensors
Authors: Majumder Deblina , Datta Aparna , Mitra Manoj Kumar , Roy Somenath
Published: September 2016

Gold nanoparticle-loaded cerium oxide sensors detect 10–30 ppm of carbon monoxide in air with very fast response. The response and recovery transients of conductance have been modelled using two-site Langmuir adsorption kinetics.
Effects of immobilized VEGF on endothelial progenitor cells cultured on silicon substituted and nanocrystalline hydroxyapatites
Authors: Feito M. J. , Serrano M. C. , Oñaderra M. , Matesanz M. C. , Sánchez-Salcedo S. , Arcos D. , Vallet-Regí M. , Portolés M. T.
Published: September 2016

Immobilized VEGF effects on angiogenic cells cultured on silicon substituted and nanocrystalline hydroxyapatites.
Nitrogen functionalized hierarchical microporous/mesoporous carbon with a high surface area and controllable nitrogen content for enhanced lead(ii) adsorption
Authors: Li Kunquan , Cao Jinfan , Li Hua , Liu Jiamin , Lu Mingzhou , Tang Dengyong
Published: September 2016

Nitrogen-doped hierarchical microporous/mesoporous carbons (NHMCs) were conveniently fabricated for enhanced lead adsorption through a sol–gel method and NaOH-assisted activation with a soluble melamine–phenol–formaldehyde resin as a precursor.
Palladium nanoparticles stabilised by cinchona-based alkaloids in glycerol: efficient catalysts for surface assisted processes
Authors: Reina A. , Pradel C. , Martin E. , Teuma E. , Gómez M.
Published: September 2016

Cinchona-based alkaloids led to well-dispersed palladium nanoparticles in neat glycerol, leading to efficient eco-friendly catalytic phases in hydrogenations and hydrodehalogenations.
Mesoporous graphitic carbon nitride functionalized iron oxides for promoting phenol oxidation activity
Authors: Luo Lei , Zhang Anfeng , Janik Michael J. , Song Chunshan , Guo Xinwen
Published: September 2016

Mesoporous graphitic carbon nitride was found to be a superior support of iron oxides, improving the dispersion, adjusting the iron oxidation state, and promoting the catalytic oxidation of phenol.
Emergence of low dimensional ferroelectricity in Pr0.67Ca0.33MnO3 nanocrystal arrays
Authors: Shukla Vinay Kumar , Mukhopadhyay Soumik
Published: September 2016

We discuss the emergence of low dimensional ferroelectricity in self-organized Pr0.67Ca0.33MnO3 nanocrystalline arrays deposited on a Si substrate.
Heterogeneous Cu(ii)/l-His@Fe3O4 nanocatalyst: a novel, efficient and magnetically-recoverable catalyst for organic transformations in green solvents
Authors: Norouzi Masoomeh , Ghorbani-Choghamarani Arash , Nikoorazm Mohsen
Published: September 2016

A novel, efficient and green Cu(ii)/l-His@Fe3O4 catalyst has been applied successfully in the synthesis of heterocyclic compounds.
Limited Ce doped Ni–Co as a highly efficient catalyst for H2-SCR of NO with good resistance to SO2 and H2O at low temperature
Authors: Cai Xuanxuan , Sun Wei , Zaman Waqas Qamar , Cao Limei , Yang Ji
Published: September 2016

The reaction mechanism of the selective catalytic reduction of NO by hydrogen over Ni1−xCexCo1.95Pd0.05O4 catalysts.
A method to derivatize surface silanol groups to Si-alkyl groups in carbon-doped silicon oxides
Authors: Darmakkolla Srikar Rao , Tran Hoang , Gupta Atul , Rananavare Shankar B.
Published: September 2016

A carbon-doped silicon oxide (CDO) finds use as a material with a low dielectric constant (k) for copper interconnects in multilayered integrated circuits (ICs).
Synthesis, characterization and properties of furan-containing difluoroboron complexes
Authors: Liu Chun , Zhang Hao , Zhao Jianzhang
Published: September 2016

New β-diketonate difluoroboron complexes (F1–F4) containing a furan ring have been developed, and their luminescence properties have been investigated systematically.
Novel synthesis of a mixed Cu/CuO–reduced graphene oxide nanocomposite with enhanced peroxidase-like catalytic activity for easy detection of glutathione in solution and using a paper strip
Authors: Singh Preeti , Nath Peuli , Arun Ravi Kumar , Mandal Soumen , Chanda Nripen
Published: September 2016

Mixed copper nanocomposite, Cu/CuO–rGO is prepared through a novel one-step oxidation-reduction reaction between aqueous graphene oxide (GO) and copper(ii) chloride (CuCl2) solutions at ambient temperature and pressure.
High shielding effectiveness of multilayer graphene oxide aerogel film/polymer composites
Authors: Han Dong , Zhao Yun-Hong , Bai Shu-Lin , Ching Ping Wong
Published: September 2016

In this work, an efficient and simple method is proposed to fabricate lightweight and flexible composites composed of a reduced graphene oxide aerogel film (rGO-AF) and a polydimethylsiloxane (PDMS) matrix.
Synthesis of novel 1,5-disubstituted pyrrolo[1,2-a]quinazolines and their evaluation for anti-bacterial and anti-oxidant activities
Authors: Kazemi Shaghayegh Sadat , Keivanloo Ali , Nasr-Isfahani Hossein , Bamoniri Abdolhamid
Published: September 2016

A new series of 1,5-disubstituted pyrrolo[1,2-a]quinazoline derivatives were prepared from 2-chloro-4-substituted quinazolines, propargyl alcohol, and secondary amines through novel multi-component reactions.
A bright yellow light from a Yb3+,Er3+-co-doped Y2SiO5upconversion luminescence material
Authors: Huy Bui The , Sengthong Bounyavong , Van Do Phan , Chung Jong Won , Ajith Kumar Gangadharan , Quang Vu Xuan , Dao Van-Duong , Lee Yong-Ill
Published: September 2016

A bright yellow light from Yb3+and Er3+doped Y2SiO5upconversion materials in particle and fiber form were prepared by a co-precipitation, and electrospinning method.
Strain-induced crystallization behaviour of natural rubbers from guayule and rubber dandelion revealed by simultaneous time-resolved WAXD/tensile measurements: indispensable function for sustainable resources
Authors: Ikeda Yuko , Junkong Preeyanuch , Ohashi Takumi , Phakkeeree Treethip , Sakaki Yuta , Tohsan Atitaya , Kohjiya Shinzo , Cornish Katrina
Published: September 2016

Guayule and rubber dandelion natural rubbers are useful alternatives forHeveanatural rubber in terms of their strain-induced crystallization behaviours.
Preparation of polyacrylamide microspheres with core–shell structure via surface-initiated atom transfer radical polymerization
Authors: Zhang Peng , Bai Shixun , Chen Shilan , Li Dandan , Jia Zhenfu , Zhou Chengyu , Feng Jian , Yu Li
Published: September 2016

Well defined core–shell microspheres were prepared by surface-initiated atom transfer radical polymerization with pre-crosslinked polyacrylamide as the core and non-crosslinked polyacrylamide as the shell.
An Ni–P/C electro-catalyst with improved activity for the carbohydrazide oxidation reaction
Authors: Cao Xinyue , Wang Haining , Lu Shanfu , Chen Sian , Xiang Yan
Published: September 2016

Ni–P/C NPs were prepared through a two-step liquid phase reduction method, which exhibited a significant enhancement for the electro-catalytic activity towards the carbohydrazide oxidation reaction compared with Ni/C NPs.
Charge delocalization characteristics of regioregular high mobility polymers
Authors: Coughlin J. E. , Zhugayevych A. , Wang M. , Bazan G. C. , Tretiak S.
Published: September 2016

Density Functional Theory modeling examines structural and electronic properties of charge states in the family of narrow bandgap conjugated polymers with controlled regioregularity among the structural units.
A high-performance current collector-free flexible in-plane micro-supercapacitor based on a highly conductive reduced graphene oxide film
Authors: Wu Mingmao , Li Yingru , Yao Bowen , Chen Ji , Li Chun , Shi Gaoquan
Published: September 2016

A flexible in-plane micro-supercapacitor fabricated by laser carving a highly conductive reduced graphene oxide film and electrochemical activation exhibits high areal specific capacitance and excellent cycling stability.
A cadmium(ii)-based metal–organic framework for selective trace detection of nitroaniline isomers and photocatalytic degradation of methylene blue in neutral aqueous solution
Authors: Wu Pengyan , Liu Yanhong , Li Yang , Jiang Min , Li Xiu-ling , Shi Yanhui , Wang Jian
Published: September 2016

The photoactive MOF showed ultra-sensitivity towards p-NA compared to other nitroaniline isomers and highly efficient photocatalytic activities for photodegradation of MB.
A comprehensive study of the role of transition metals in O3-type layered Na[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, and 0.8) cathodes for sodium-ion batteries
Authors: Hwang Jang-Yeon , Yoon Chong S. , Belharouak Ilias , Sun Yang-Kook
Published: September 2016

Spherical O3-type layered Na[NixCoyMnz]O2 cathodes were synthesized by co-precipitation. An increase in the Ni concentration results in an increase of specific discharge capacity but the corresponding capacity retention and thermal stability progressively decreased.
Terahertz photodetector arrays based on a large scale MoSe2 monolayer
Authors: Liu Huiqiang , Chen Zuxin , Chen Xuechen , Chu Sheng , Huang Jingwen , Peng Rufang
Published: September 2016

Large domains of monolayered transition-metal dichalcogenides (TMDCs) have emerged as exciting materials because of their potential to provide a platform for ultrathin circuits and optoelectronics systems.
Third-order nonlinear optical response and ultrafast dynamics of tetraoxa[22]porphyrin(2.1.2.1)s
Authors: Makhal Krishnandu , Arora Shafali , Kaur Paramjit , Goswami Debabrata , Singh Kamaljit
Published: September 2016

Ultrafast dynamics and third-order nonlinear optical studies of tetraoxa[22]porphyrin(2.1.2.1)s are reported using a single beam Z-scan technique with femtosecond (fs) and nanosecond (ns) pulses at respective near-IR and visible wavelengths.
Yellow emitting carbon dots with superior colloidal, thermal, and photochemical stabilities
Authors: Datta Kasibhatta Kumara Ramanatha , Qi Genggeng , Zboril Radek , Giannelis Emmanuel P.
Published: September 2016

Herein we report the hydrothermal synthesis of yellow emitting carbon dots in high salinity water and compare them with those prepared in distilled water.
Creation of near-infrared luminescent phosphors enabled by topotactic reduction of bismuth-activated red-emitting crystals
Authors: Liu Bo-Mei , Yong Zi-Jun , Zhou Yang , Zhou Dan-Dan , Zheng Li-Rong , Li Li-Na , Yu Hui-Mei , Sun Hong-Tao
Published: September 2016

Bismuth-doped luminescent materials have gained significant attention in recent years owing to their huge potential for applications in telecommunications, biomedicine, and displays.
Freestanding electrochromic paper
Authors: Malti Abdellah , Brooke Robert , Liu Xianjie , Zhao Dan , Andersson Ersman Peter , Fahlman Mats , Jonsson Magnus P. , Berggren Magnus , Crispin Xavier
Published: September 2016

A combination of nanofibrils and nanoparticles is used to fabricate polymer-based freestanding electrochromic materials which exhibit contrasts >20 in devices.
PAPR reduction scheme: wavelet packet‐based PTS with embedded side information data scheme
Authors: Zakaria Jamaluddin , Mohd Salleh Mohd Fadzli
Published: September 2016

Partial transmit sequence (PTS) is an effective scheme to reduce high peak‐to‐average power ratio (PAPR) for multicarrier modulation (MCM) signal transmission systems. This approach produces side information (SI) data as a result of the MCM signal optimisation process. The generated SI data are required to be transmitted with the original data over the channel for successful data recovery at the receiver. An effective method for SI data transmission has not yet been identified and research is still ongoing. Hence, the authors introduce a technique that embeds SI data into the original data frame. In this study, a wavelet packet (WP)‐based PTS (WP‐PTS) scheme is selected as the MCM transmission method. The proposed scheme is called WP‐PTS with embedded SI data. In addition, a suitable scheme for reconstructing the original data is developed. Simulation result shows that the PAPR performance of the proposed scheme improves by up to 2.5 dB at a complementary cumulative distribution function level of 10−4 compared with the original WP‐orthogonal frequency‐division multiplexing system without the PAPR reduction scheme when the number of selected disjoint subblocks is 16.
Pilot power adaptation for tomographic channel estimation in distributed MIMO systems
Authors: Zhang Yingjie , Feng Wei , Ge Ning
Published: September 2016

In distributed multiple‐input multiple‐output (D‐MIMO) systems, the improvements of spectral and energy efficiencies rely heavily on the accuracy of the channel state information (CSI). In order to enhance the accuracy of CSI acquisition, the problem of pilot design in a D‐MIMO system is addressed in this study. In particular, the authors focus on the optimisation of pilot power adaptation in a single‐cell D‐MIMO system with multiple users served in orthogonal resources. Under the concept of tomographic channel estimation, the problem of pilot power adaptation aiming at maximising the lower bound of the sum capacity is formulated. As the computational complexity of solving the problem is relatively high due to the mutual coupling constraints, the dual decomposition technique is introduced to decouple the constraints and reduce the complexity via parallel computation. An effective pilot power adaptation scheme is further proposed by using the projected subgradient method. The superiority and effectiveness of the proposed scheme are illustrated by the simulation results.
Decode‐and‐forward polar coding scheme for receive diversity: a relay partially perfect retransmission for half‐duplex wireless relay channels
Authors: Soliman Tamer , Yang Fengfan , Ejaz Saqib , Almslmany Amir
Published: September 2016

Recently, it is shown that the channel polarisation phenomenon of Arikan's polar codes with their original multilevel construction happens in several levels with perfect, partially perfect and useless bit channels. On the basis of this construction, this study aims to illustrate design principles and decoding steps of cooperative decode‐and‐forward polar coding schemes for half‐duplex relay channel. In these schemes, the authors consider the use of relay retransmission of partially perfect bit channels in time‐division process. The source node transmits its polar‐coded information to both the relay and the destination nodes during the first time slot. For the second transmission period, the relay first decodes the source signal then after reconstruction of the polarisation matrix, the extracted partially perfect bit channels are recoded using another polar code and finally transmitted to the destination node. At destination, the signals received from both source and relay nodes are processed by using multi‐stage successive cancellation decoding for retrieving the original information bits. They demonstrate via numerical results that by carefully constructed polarisation matrix at relay node, their cooperative polar coding schemes can achieve better performances than other previous schemes.
Development of low‐cost PV array‐fed SRM drive‐based water pumping system utilising CSC converter
Authors: Narayana Vijaytarang , Kumar Mishra Anjanee , Singh Bhim
Published: September 2016

The prime objective of this study is to achieve a highly efficient and reduced‐cost configuration of a solar photovoltaic (PV)‐based water pumping system using a canonical switching cell (CSC) converter employing a switched reluctance motor (SRM). A CSC converter with a maximum power point tracking controller utilises a continuous conduction mode (CCM), which helps in power optimisation of PV array and limiting the starting inrush current in the SRM by requisite control. The CCM operation of CSC converter considerably reduces the stresses on its components. The fundamental switching of a mid‐point converter lowers its losses and it improves the system efficiency. The proper selection of perturbation size and initial duty ratio of CSC converter provide the soft starting to SRM drive. An experimental prototype of the proposed configuration is developed and it authenticates its suitability over varying irradiance and different environmental conditions.
Blood Loss in Total Knee Arthroplasty
Authors: Cundy William , Theodoulou Annika , Ling Chi , Krishnan Jeganath , Wilson Christopher
Published: September 2016

Patients undergoing total knee arthroplasty (TKA) have expected blood loss during and after surgery. The morbidity associated with blood loss and the burden of blood transfusions in adult arthroplasty necessitates preoperative optimization as routine practice. Current literature remains inconclusive on which TKA surgical instrumentation techniques are effective in minimizing perioperative blood loss, and consequently lower transfusion rates. The primary objective of this retrospective review, of a prospective randomized cohort study, was to compare surgical and patient factors, and their influence on blood loss and transfusions rates, between one type of patient-specific instrumentation (PSI), navigated computer-assisted surgery (CAS), and conventional TKA surgical techniques.

A cohort of 128 matched patients (38 PSI, 44 CAS, 46 conventional surgeries) were compared. Preoperative factors analyzed included; age, gender, body mass index, preoperative hemoglobin (Hb) (g/L), international normalized ratio, use of anticoagulants and comorbid bleeding diathesis. Maximal Hb drop and transfusion requirements were compared on day 1 to 3. Perioperative factors collected included: surgical time, tourniquet time, drain output, in situ drain time, order of tibia or femoral cut, and intraoperative loss from suction.

The three groups did not differ on the preoperative patient demographics examined. The difference between preoperative Hb and the lowest postoperative Hb readings did not differ between study groups (p = 0.39).

There are no statistically significant differences in blood loss when comparing PSI versus CAS versus conventional TKA. Although emerging evidence on PSI is encouraging, the PSI technique for TKA does not result in reduced blood loss. The study was registered with ClinicalTrials.gov: NCT01145157.
Context may be King, but generalizability is the Emperor!
Authors: Cheng Zhi (Aaron) , Dimoka Angelika , Pavlou Paul A.
Published: September 2016

The relative importance of context and generalizability (or particularism and universalism) has long been debated in scientific research. Recently, Davison and Martinsons raised valid concerns about the possibility of false universalism in IS research, discussed its negative consequences, and made a call for explicitly including particularism in research design and reporting. In this commentary, we generally agree with the notion that context should matter more in IS research; yet, the importance of generalizability in research should not be downplayed. Specifically, we posit that generalizability should be given higher position in the scientific process and be the ultimate goal for researchers. Still, researchers need to fully understand the research context, which, in combination and replication, can help to cautiously make generalizable knowledge claims. Therefore, we characterize the relationship between context and generalizability as that of a “King” (as an analogy of the local role of context) versus the “Emperor” (as an analogy of the global role of generalizability).
Analysis of Ar plasma jets induced by single and double dielectric barrier discharges at atmospheric pressure
Authors: Judée F. , Merbahi N. , Wattieaux G. , Yousfi M.
Published: September 2016

The aim is the comparison of different plasma parameters of single and double dielectric barrier discharge plasma jet configurations (S-DBD and D-DBD) which are potentially usable in biomedical applications. Both configurations are studied in terms of electric field distribution, electrical discharge characteristics, plasma parameters (estimated by optical emission spectroscopy analysis), and hydrodynamics of the plasma jet for electrical parameters of power supplies corresponding to an applied voltage of 10 kV, pulse duration of 1 μs, frequency of 9.69 kHz, and Ar flow of 2 l/min. We observed that the D-DBD configuration requires half the electrical power one needs to provide in the S-DBD case to generate a plasma jet with similar characteristics: excitation temperature around 4700 K, electron density around 2.5 × 1014 cm−3, gas temperature of about 320 K, a relatively high atomic oxygen concentration reaching up to 1000 ppm, the presence of reactive oxygen and nitrogen species (nitric oxide, hydroxyl radical, and atomic oxygen), and an irradiance in the UV-C range of about 20 μW cm−2. Moreover, it has been observed that D-DBD plasma jet is more sensitive to short pulse durations, probably due to the charge accumulation over the dielectric barrier around the internal electrode. This results in a significantly longer plasma length in the D-DBD configuration than in the S-DBD one up to a critical flow rate (2.25 l/min) before the occurrence of turbulence in the D-DBD case. Conversely, ionization wave velocities are significantly higher in the S-DBD setup (3.35 × 105 m/s against 1.02 × 105 m/s for D-DBD), probably due to the higher electrostatic field close to the high voltage electrode in the S-DBD plasma jet.
Overview: Homogeneous nucleation from the vapor phase—The experimental science
Authors: Wyslouzil Barbara E. , Wölk Judith
Published: September 2016

Homogeneous nucleation from the vapor phase has been a well-defined area of research for ∼120 yr. In this paper, we present an overview of the key experimental and theoretical developments that have made it possible to address some of the fundamental questions first delineated and investigated in C. T. R. Wilson’s pioneering paper of 1897 [C. T. R. Wilson, Philos. Trans. R. Soc., A 189, 265–307 (1897)]. We review the principles behind the standard experimental techniques currently used to measure isothermal nucleation rates, and discuss the molecular level information that can be extracted from these measurements. We then highlight recent approaches that interrogate the vapor and intermediate clusters leading to particle formation, more directly.
Explosion of relativistic electron vortices in laser plasmas
Authors: Lezhnin K. V. , Kamenets F. F. , Esirkepov T. Zh. , Bulanov S. V. , Gu Y. J. , Weber S. , Korn G.
Published: September 2016

The interaction of high intensity laser radiation with an underdense plasma may lead to the formation of electron vortices. Though being quasistationary on the electron timescales, these structures tend to expand on a proton timescale due to Coulomb repulsion of ions. Using a simple analytical model of a stationary vortex as an initial condition, 2D PIC simulations are performed. A number of effects are observed such as vortex boundary field intensification, multistream instabilities at the vortex boundary, and bending of the vortex boundary with the subsequent transformation into smaller electron vortices.
Raman and photoelectron spectroscopic investigation of high-purity niobium materials: Oxides, hydrides, and hydrocarbons
Authors: Singh Nageshwar , Deo M. N. , Nand Mangla , Jha S. N. , Roy S. B.
Published: September 2016

We present investigations of the presence of oxides, hydrides, and hydrocarbons in high-purity (residual resistivity ratio, ∼300) niobium (Nb) materials used in fabrication of superconducting radio frequency (SRF) cavities for particle accelerators. Raman spectroscopy of Nb materials (as-received from the vendor as well as after surface chemical- and thermal processing) revealed numerous peaks, which evidently show the presence of oxides (550 cm−1), hydrides (1277 and 1385 cm−1: ∼80 K temperature), and groups of hydrocarbons (1096, 2330, 2710, 2830, 2868, and 3080 cm−1). The present work provides direct spectroscopic evidence of hydrides in the electropolished Nb materials typically used in SRF cavities. Raman spectroscopy thus can provide vital information about the near-surface chemical species in niobium materials and will help in identifying the cause for the performance degradation of SRF cavities. Furthermore, photoelectron spectroscopy was performed on the Nb samples to complement the Raman spectroscopy study. This study reveals the presence of C and O in the Nb samples. Core level spectra of Nb (doublet 3d5/2 and 3d3/2) show peaks near 206.6 and 209.4 eV, which can be attributed to the Nb5+ oxidation state. The core level spectra of C 1 s of the samples are dominated by graphitic carbon (binding energy, 284.6 eV), while the spectra of O 1 s are asymmetrically peaked near binding energy of ∼529 eV, and that indicates the presence of metal-oxide Nb2O5. The valence-band spectra of the Nb samples are dominated by a broad peak similar to O 2p states, but after sputtering (for 10 min) a peak appears at ∼1 eV, which is a feature of the elemental Nb atom.
Response to “Comment on ‘A large volume uniform plasma generator for the experiments of electromagnetic wave propagation in plasma’” [Phys. Plasmas 23, 094701 (2016)]
Authors: Yang Min , Li Xiaoping , Xie Kai , Liu yanming , Liu Donglin
Published: September 2016

We respond to the issues raised in the comment by Eliseev and Kudryavtsev [Phys. Plasmas 23, 094701 (2016)]. We re-examine the principle of plasma generation and the operating situations in our plasma device, and some simplified models are founded to illustrate the qualitative relations between the pressure and the magnitude and uniformity of ne. We stand by our original conclusions in our plasma device that the magnitude and uniformity of ne are in roughly reverse proportion to the gas pressure in the chamber, as observed in the experiment.
Linear stability of buoyant convection in a horizontal layer of an electrically conducting fluid in moderate and high vertical magnetic field
Authors: Hudoba A. , Molokov S. , Aleksandrova S. , Pedcenko A.
Published: September 2016

Linear stability of buoyant convective flow in a horizontal layer of an electrically conducting fluid is considered with reference to horizontal Bridgman semiconductor crystal growth. The fluid flows owing to the horizontal temperature gradient in the presence of a vertical magnetic field. The main interest here is in the stability of the flow for a sufficiently strong magnetic field, for the Hartmann number Ha > 10, and increasing to high values, of the order of 103–104. The Prandtl number, Pr, has been fixed at Pr = 0.015. It is shown that besides the Hartmann number the instability strongly depends on the type of the thermal boundary conditions at the horizontal walls. For thermally conducting walls the basic temperature profile exhibits zones of unstable thermal stratification, which leads to instabilities owing to the Rayleigh-Bénard mechanism. However, the transitions between various, most unstable modes as Ha increases are not trivial. For sufficiently high values of Ha, the most unstable mode consists of transverse oscillatory rolls located in the region of unstable stratification. For thermally insulating walls, the transitions are simpler, and for sufficiently high Ha, the most unstable mode consists of longitudinal, steady, three-dimensional mode which is concentrated in the Hartmann layers at the horizontal boundaries. This mode has a combined dynamic-thermal origin and is owed to a strong shear in the Hartmann layers. The electrical boundary conditions do not qualitatively affect the picture of transitions between modes for both thermally conducting and thermally insulating walls.
High ferroelectric polarization in c-oriented BaTiO3 epitaxial thin films on SrTiO3/Si(001)
Authors: Scigaj M. , Chao C. H. , Gázquez J. , Fina I. , Moalla R. , Saint-Girons G. , Chisholm M. F. , Herranz G. , Fontcuberta J. , Bachelet R. , Sánchez F.
Published: September 2016

The integration of epitaxial BaTiO3 films on silicon, combining c-orientation, surface flatness, and high ferroelectric polarization is of main interest towards its use in memory devices. This combination of properties has been only achieved so far by using yttria-stabilized zirconia buffer layers. Here, the all-perovskite BaTiO3/LaNiO3/SrTiO3 heterostructure is grown monolithically on Si(001). The BaTiO3 films are epitaxial and c-oriented and present low surface roughness and high remnant ferroelectric polarization around 6 μC/cm2. This result paves the way towards the fabrication of lead-free BaTiO3 ferroelectric memories on silicon platforms.
Comment on “Avalanche proton-boron fusion based on elastic nuclear collisions” [Phys. Plasmas 23, 050704 (2016)]
Authors: Shmatov Mikhail L.
Published: September 2016

It is shown that collisions of alpha particles with protons could not result in the physically important manifestation of avalanche proton-boron fusion in experiments at Prague Asterix Laser System.
Enhancing multivariate singular spectrum analysis for phase synchronization: The role of observability
Authors: Portes Leonardo L. , Aguirre Luis A.
Published: September 2016

Multivariate singular spectrum analysis (M-SSA) was recently adapted to study systems of coupled oscillators. It does not require an a priori definition for phase nor detailed knowledge of the individual oscillators, but it uses all the variables of each system. This aspect could be restrictive for practical applications, since usually just a few (sometimes only one) variables are measured. Based on dynamical systems and observability theories, we first show how to apply the M-SSA with only one variable and show the conditions to achieve good performance. Next, we provide numerical evidence that this single-variable approach enhances the explanatory power compared to the original M-SSA when computed with all the system variables. This could have important practical implications, as pointed out using benchmark oscillators.
Exploiting the transient behavior of thermocapillary convection flows to enhance non-contact mesoscale manipulation
Authors: Quispe Johan , Muñoz Elvin , Vela Emir
Published: September 2016

In this work it is demonstrated that the manipulation of the mesoscale-sized particles through Marangoni flows occurs during the transient regime of the convection cell evolution. By exploiting this fact, it was possible to selectively separate a single glass bead out of a group of other beads ranging from 150 to 212 μm. This task was accomplished by controlling the Marangoni convection cell growth. The growth was controlled by varying the pulse width of an infrared laser beam that acts as a thermal source. Thus, extending the use of the Marangoni flows for single particles sorting or manipulation.
Adhesion distribution on the surface of a single microparticle
Authors: Vallabh Chaitanya Krishna Prasad , Cetinkaya Cetin
Published: September 2016

Precise adhesion distribution on the surface of a single microparticle has been a significant challenge, mainly because its micro-scale handling/manipulation in a controllable manner and uncertainty related to the nature of relevant nano-scale contacts/interfaces are still unresolved. In the current work, it is demonstrated that, under the influence of Surface Acoustic Wave pulses, a single spherical microparticle can be rolled by first breaking its bond with the substrate and bringing it to another stationary contact point. During successive stop-and-go rolling steps, the work-of-adhesion at each contact point is obtained interferometrically. The coordinates of the contact points during the experiments are obtained from the particle trajectories after successive rolling actions. The coordinates of the contact points are mapped on the surface of the particle to obtain a statistically scanned surface adhesion map. Here, we report the adhesion distribution on the surface of a single microparticle.