bluuebunny/crossref_metadata_2025 huggingface dataset:
Brightening Gold Nanoparticles: New Sensing Approach Based on Plasmon Resonance Energy Transfer
Authors: Shi Lei , Jing Chao , Gu Zhen , Long Yi-Tao
Published: May 2015

Scattering recovered plasmonic resonance energy transfer (SR-PRET) was reported by blocking the plasmon resonance energy transfer (PRET) from gold nanoparticle (GNP) to the adsorbed molecules (RdBS). Due to the selective cleavage of the Si-O bond by F− ions, the quenching is switched off causing an increase in the brightness of the GNPs,detected using dark-field microscopy (DFM) were brightened. This method was successfully applied to the determination of fluoride ions in water. The SR-PRET provides a potential approach for a vitro/vivo sensing with high sensitivity and selectivity.
The transgenic cloned pig population with integrated and controllable GH expression that has higher feed efficiency and meat production
Authors: Ju Huiming , Zhang Jiaqing , Bai Lijing , Mu Yulian , Du Yutao , Yang Wenxian , Li Yong , Sheng Anzhi , Li Kui
Published: May 2015

Sustained expression of the GH gene has been shown to have detrimental effects on the health of animals. In the current study, transgenic founder pigs, with controllable pig growth hormone (pGH) expression, were cloned via the handmade cloning method (HMC) and pGH expression levels were examined at the cellular and organismal levels. The serum pGH levels in 3 founder male pigs were found to be significantly higher after induction with intramuscular injection of doxycycline (DOX) compared to baseline. A daily dose of DOX was administered via feed to these animals for a period of 65 to 155 days. The growth rate, feed efficiency and pGH serum concentration increased in the DOX-induced transgenic group compared with the other groups. 8 numbers of animals were euthanized and the dressing percentage, loin muscle and lean meat percentage were significantly higher in the DOX-induced F1 transgenic group compared with the other groups. In this study a large population of transgenic pigs, with integrated controllable expression of a transgene, was obtained. The transgenic pigs were healthy and normal in terms of reproductive capability. At the same time, feed efficiency was improved, production processes were accelerated and meat yield was increased.
Partial dark-field microscopy for investigating domain structures of double-layer microsphere film
Authors: Heon Kim Joon , Su Park Jung
Published: May 2015

A lateral dislocation in a double-layer microsphere film is very difficult to identify because the constituent domains have the same two-dimensional crystalline orientation. Orientation-sensitive optical techniques cannot resolve this issue. Here, we demonstrate that partial dark-field (pDF) optical microscopy can be very effective in identifying this type of domain boundary and dislocation of a close-packed microsphere double-layer. Using the hexagonal symmetry of the close-packed microsphere film and the light-focusing property of microspheres, the partially blocked dark-field condenser can provide much higher contrast than other optical microscopy modes can in identifying the laterally dislocated domains. The former can also distinguish domains with different crystalline orientation by rotating the pDF stop. The simplicity of the pDF mode will make it an ideal tool for the structural study of close-packed double-layer microsphere films.
lncRNA GAS5 enhances G1 cell cycle arrest via binding to YBX1 to regulate p21 expression in stomach cancer
Authors: Liu Yongchao , Zhao Jing , Zhang Wenhong , Gan Jun , Hu Chengen , Huang Guangjian , Zhang Ying
Published: May 2015

Long non-coding RNAs (lncRNAs), which have evolved as important gene expression modulators, are involved in human malignancies. The down-regulation of lncRNA growth arrest specific transcript 5 (GAS5) has been reported in several cancers, however, the underlying mechanism of lncRNA GAS5 in stomach cancer is poorly understood. In this study, we found that lncRNA GAS5 had lower expression in stomach cancer tissues than the normal counterparts. lncRNA GAS5 was shown to interact with Y-box binding protein 1 (YBX1) and lncRNA GAS5 knockdown was shown to accelerate YBX1 protein turnover without affecting YBX1 transcription. lncRNA GAS5 down-regulation reduced the YBX1 protein level, which decreased YBX1-transactivated p21 expression and abolished G1 phase cell cycle arrest in stomach cancer. These results delineate a novel mechanism of lncRNA GAS5 in suppressing stomach carcinogenesis and the lncRNA GAS5/YBX1/p21 pathway we discovered may provide useful targets for developing lncRNA-based therapies for stomach cancer.
A peptide N-terminal protection strategy for comprehensive glycoproteome analysis using hydrazide chemistry based method
Authors: Huang Junfeng , Qin Hongqiang , Sun Zhen , Huang Guang , Mao Jiawei , Cheng Kai , Zhang Zhang , Wan Hao , Yao Yating , Dong Jing , Zhu Jun , Wang Fangjun , Ye Mingliang , Zou Hanfa
Published: May 2015

Enrichment of glycopeptides by hydrazide chemistry (HC) is a popular method for glycoproteomics analysis. However, possible side reactions of peptide backbones during the glycan oxidation in this method have not been comprehensively studied. Here, we developed a proteomics approach to locate such side reactions and found several types of the side reactions that could seriously compromise the performance of glycoproteomics analysis. Particularly, the HC method failed to identify N-terminal Ser/Thr glycopeptides because the oxidation of vicinal amino alcohol on these peptides generates aldehyde groups and after they are covalently coupled to HC beads, these peptides cannot be released by PNGase F for identification. To overcome this drawback, we apply a peptide N-terminal protection strategy in which primary amine groups on peptides are chemically blocked via dimethyl labeling, thus the vicinal amino alcohols on peptide N-termini are eliminated. Our results showed that this strategy successfully prevented the oxidation of peptide N-termini and significantly improved the coverage of glycoproteome.
Tubulin structure-based drug design for the development of novel 4β-sulfur-substituted podophyllum tubulin inhibitors with anti-tumor activity
Authors: Zhao Wei , Bai Jia-Ke , Li Hong-Mei , Chen Tao , Tang Ya-Jie
Published: May 2015

The well-characterized anti-tubulin agent, podophyllotoxin (PTOX), with the 4′-position methoxyl group, targets the colchicines domain located between α- and β-tubulin. Two guanosine triphosphate (GTP) analogs of the tubulin-binding region were synthesized from PTOX, where a hydroxyl group was substituted with a carbon-sulfur bond. These compounds, 4-MP-PTOX and 4-TG-PTOX, reduce the dosage and greatly improve the therapeutic effect for microtubule damage in cancer cells. Here we characterize the anti-tubulin properties of these compounds. We found the stronger inhibition of tubulin polymerization (the concentration of 50% growth inhibition, GI50 < 2 μM) for compounds 4-TG-PTOX and 4-MP-PTOX, which were better than that of PTOX or colchicine. The cytotoxicity of two designed compounds on tumor cells was also significantly enhanced by comparing to those of PTOX and colchicines. The ΔH value of 4-MP-PTOX and 4-TG-PTOX binding to tubulin by isothermal titration calorimetry (ITC) was found to be −7.4 and −5.3 kcal·mol−1, respectively. The wide range of enthalpy values across the series may reflect entropy/enthalpy compensation effects. Fragments 6-mercaptopurine (MP) and 6-thioguanine (TG) likely enhance the affinity of 4-MP-PTOX and 4-TG-PTOX binding to tubulin by increasing the number of binding sites. The correctness of rational drug design was strictly demonstrated by a bioactivity test.
K63 linked ubiquitin chain formation is a signal for HIF1A degradation by Chaperone-Mediated Autophagy
Authors: Vasco Ferreira Joao , Rosa Soares Ana , Silva Ramalho Jose , Pereira Paulo , Girao Henrique
Published: May 2015

Chaperone-Mediated Autophagy is a selective form of autophagy. Recently, the degradation of a newly identified CMA substrate, the HIF1A transcription factor, was found to be regulated by the ubiquitin ligase STUB1. In this study we show, for the first time, that K63 ubiquitination is necessary for CMA degradation of HIF1A in vitro and in vivo. Additionally, STUB1 mediates K63 linked ubiquitination of HIF1A. Our findings add a new regulatory step and increase the specificity of the molecular mechanism involved in CMA degradation of HIF1A, expanding the role of ubiquitination to yet another biological process, since the same mechanism might be applicable to other CMA substrates.
Seasonal recharge and mean residence times of soil and epikarst water in a small karst catchment of southwest China
Authors: Hu Ke , Chen Hongsong , Nie Yunpeng , Wang Kelin
Published: May 2015

Soil and epikarst play an important role in the hydrological cycle in karst regions. This paper focuses on investigating the seasonal recharge and mean residence time (MRT) of soil water and epikarst water in a small karst catchment of southwest China. The deuterium contents in precipitation, creek, soil baseflow (direct recharge of the saturated soil water to the stream), epikarst spring and soil waters were monitored weekly for two years and MRT was calculated by an exponential model (EM) and a dispersion model (DM). The obvious seasonal variation of deuterium in rainfall was buffered in epikarst water, indicating sufficient water mixing. Soil baseflow contained less rainy-season rainwater than epikarst spring discharge, reflecting the retarded effect of soil thickness on rainwater recharge. MRTs of all water bodies were 41-71 weeks and soils in the depression extended those of shallow groundwater. This demonstrated that the deep soil layer played an important role in karst hydrological processes in the study catchment. The creek was recharged mostly by rainfall through epikarst, indicating its crucial role in water circulation. These results showed epikarst had a strong water-holding capacity and also delayed water contact time with dolomite.
Ambipolar light-emitting organic single-crystal transistors with a grating resonator
Authors: Maruyama Kenichi , Sawabe Kosuke , Sakanoue Tomo , Li Jinpeng , Takahashi Wataru , Hotta Shu , Iwasa Yoshihiro , Takenobu Taishi
Published: May 2015

Electrically driven organic lasers are among the best lasing devices due to their rich variety of emission colors as well as other advantages, including printability, flexibility and stretchability. However, electrically driven lasing in organic materials has not yet been demonstrated because of serious luminescent efficiency roll-off under high current density. Recently, we found that the organic ambipolar single-crystal transistor is an excellent candidate for lasing devices because it exhibits less efficient roll-off, high current density and high luminescent efficiency. Although a single-mode resonator combined with light-emitting transistors (LETs) is necessary for electrically driven lasing devices, the fragility of organic crystals has strictly limited the fabrication of resonators and LETs with optical cavities have never been fabricated until now. To achieve this goal, we improved the soft ultraviolet-nanoimprint lithography method and demonstrated electroluminescence from a single-crystal LET with a grating resonator, which is a crucial milestone for future organic lasers.
CART treatment improves memory and synaptic structure in APP/PS1 mice
Authors: Jin Jia-li , Liou Anthony K.F. , Shi Yejie , Yin Kai-lin , Chen Ling , Li Ling-ling , Zhu Xiao-lei , Qian Lai , Yang Rong , Chen Jun , Xu Yun
Published: May 2015

Major characteristics of Alzheimer’s disease (AD) include deposits of β-amyloid (Aβ) peptide in the brain, loss of synapses and cognitive dysfunction. Cocaine- and amphetamine-regulated transcript (CART) has recently been reported to attenuate Aβ-induced toxicity. In this study, CART localization in APP/PS1 mice was characterized and the protective effects of exogenous CART treatment were examined. Compared to age-matched wild type mice, 8-month-old APP/PS1 mice had significantly greater CART immunoreactivity in the hippocampus and cortex. A strikingly similar pattern of Aβ plaque-associated CART immunoreactivity was observed in the cortex of AD cases. Treatment of APP/PS1 mice with exogenous CART ameliorated memory deficits; this effect was associated with improvements in synaptic ultrastructure and long-term potentiation, but not a reduction of the Aβ plaques. Exogenous CART treatment in APP/PS1 mice prevented depolarization of the mitochondrial membrane and stimulated mitochondrial complex I and II activities, resulting in an increase in ATP levels. CART treatment of APP/PS1 mice also reduced reactive oxygen species and 4-hydroxynonenal and mitigated oxidative DNA damage. In summary, CART treatment reduced multiple neuropathological measures and improved memory in APP/PS1 mice and may therefore be a promising and novel therapy for AD.
Metal–organic frameworks: versatile heterogeneous catalysts for efficient catalytic organic transformations
Authors: Chughtai Adeel H. , Ahmad Nazir , Younus Hussein A. , Laypkov A. , Verpoort Francis
Published: May 2015

Novel catalytic materials are highly demanded to perform a variety of catalytic organic reactions.
Cryostructuring of polymer systems. Proteinaceous wide-pore cryogels generated by the action of denaturant/reductant mixtures on bovine serum albumin in moderately frozen aqueous media
Authors: Rodionov Ilya A. , Grinberg Natalia V. , Burova Tatiana V. , Grinberg Valery Ya. , Lozinsky Vladimir I.
Published: May 2015

A freeze–thaw cycle of serum albumin (BSA)–urea–cysteine solutions yields spongy cryogels with gross pores of 50–150 μm in cross-section.
Evaluation of uncertainty in the energy dispersive X-ray fluorescence determination of platinum in alumina
Authors: Remya Devi P. S. , Trupti A. C. , Nicy A. , Dalvi A. A. , Swain K. K. , Wagh D. N. , Verma R.
Published: May 2015

Uncertainty, the most important characteristic of an analytical result, has been evaluated using a bottom-up approach during EDXRF determination of Pt in alumina. The calibration function of the EDXRF spectrometer was derived through bivariate least squares fitting, in combination with weighted regression of the residuals.
Theoretical study of the interaction between carbon nanotubes and carboplatin anticancer molecules
Authors: El Khalifi M. , Duverger E. , Boulahdour H. , Picaud F.
Published: May 2015

The encapsulation of several anticancer drugs is energetically favored inside small carbon nanotubes.
A novel rhodamine-3,4-dihydro-2H-1,3-benzoxazine conjugate as a highly sensitive and selective chemosensor for Fe3+ions with cytoplasmic cell imaging possibilities
Authors: Molla Habib Ali , Bhowmick Rahul , Katarkar Atul , Chaudhuri Keya , Gangopadhyay Sumana , Ali Mahammad
Published: May 2015

A novel rhodamine-3,4-dihydro-2H-1,3-benzoxazine conjugate exhibits excellent selectivity towards Fe3+both in extra and intracellular conditions.
The performance of a nitrogen-containing tetrahedral amorphous carbon electrode in flow injection analysis with amperometric detection
Authors: Hamblin D'Nisha , Qiu Joy , Haubold Lars , Swain Greg M.
Published: May 2015

The performance of a nitrogen-incorporated tetrahedral amorphous (ta-C:N) carbon thin-film electrode was evaluated using flow injection analysis with amperometric detection.
Observation of microporous cesium salts of 12-tungstosilicic acid using scanning transmission electron microscopy
Authors: Hiyoshi Norihito , Kamiya Yuichi
Published: May 2015

Heteropolyanions and their arrays in microporous cesium salts of 12-tungstosilicic acid, Cs2.5H1.5[SiW12O40] and Cs4.0[SiW12O40], were observed by aberration-corrected scanning transmission electron microscopy.
Chemical decoration of CH3NH3PbI3 perovskites with graphene oxides for photodetector applications
Authors: He Minhong , Chen Yani , Liu Hui , Wang Jialin , Fang Xiaosheng , Liang Ziqi
Published: May 2015

A facile solution method is developed for in situ synthesis of free-standing CH3NH3PbI3/graphene hybrids to improve significantly the photodetector performance.
On the cause of conductivity degradation in sodium strontium silicate ionic conductor
Authors: Jee Youngseok , Zhao Xuan , Huang Kevin
Published: May 2015

The Na–SrSiO3 is a mixture of lightly Na-doped SrSiO3 and amorphous Na2Si2O5.
High yield synthesis of high-silica chabazite by combining the role of zeolite precursors and tetraethylammonium: SCR of NOx
Authors: Martín Nuria , Moliner Manuel , Corma Avelino
Published: May 2015

The synthesis of chabazite with high solid yields is achieved by the rational combination of directing effects of a source of Si and Al coming from USY zeolites and the inexpensive tetraethylammonium.
The design of a spiro-pyrrolidine organocatalyst and its application to catalytic asymmetric Michael addition for the construction of all-carbon quaternary centers
Authors: Tian Jin-Miao , Yuan Yong-Hai , Tu Yong-Qiang , Zhang Fu-Min , Zhang Xiao-Bo , Zhang Shi-Heng , Wang Shao-Hua , Zhang Xiao-Ming
Published: May 2015

A novel chiral spiro-pyrrolidine silyl ether organocatalyst has been designed and applied to an asymmetric Michael addition reaction.
A radical anti-Markovnikov addition of alkyl nitriles to simple alkenes via selective sp3 C–H bond functionalization
Authors: Li Zejiang , Xiao Yingxia , Liu Zhong-Quan
Published: May 2015

A general and practical hydrocyanoalkylation of unactivated alkenes with alkyl nitriles was developed.
One-pot tandem catalysis over Pd@MIL-101: boosting the efficiency of nitro compound hydrogenation by coupling with ammonia borane dehydrogenation
Authors: Yang Qihao , Chen Yu-Zhen , Wang Zhiyong U. , Xu Qiang , Jiang Hai-Long
Published: May 2015

The hydrogenation efficiency of nitro compounds is greatly boosted by coupling with ammonia borane dehydrogenation over rationally synthesized Pd@MIL-101 with Pd NPs in ∼3 nm.
Ternary chalcogenide micro-pseudocapacitors for on-chip energy storage
Authors: Kurra Narendra , Xia Chuan , Hedhili M. N. , Alshareef H. N.
Published: May 2015

Ternary nickel cobalt sulfide micro-pseudocapacitors exhibit superior electrochemical performance over binary sulfide micro-electrodes reported in the literature.
Synthesis of benzothiophene-based hydroxamic acids as potent and selective HDAC6 inhibitors
Authors: De Vreese Rob , Van Steen Nicholas , Verhaeghe Tom , Desmet Tom , Bougarne Nadia , De Bosscher Karolien , Benoy Veronick , Haeck Wanda , Van Den Bosch Ludo , D'hooghe Matthias
Published: May 2015

A small library of 3-[(4-hydroxycarbamoylphenyl)aminomethyl]benzothiophenes was prepared, leading to the identification of three representatives as potent and selective HDAC6 inhibitors.
Template-free synthesis of hierarchically porous NaCoPO4–Co3O4 hollow microspheres and their application as electrocatalysts for glucose
Authors: Wei Chengzhen , Cheng Cheng , Zhao Junhong , Yuan Xin , Wu Tingting , Wang Ying , Du Weimin , Pang Huan
Published: May 2015

Hierarchically porous NaCoPO4–Co3O4 hollow microspheres are synthesized via annealing the hollow microsphere precursor, which was prepared via a template-free method.
OH-stretch overtone of methanol: empirical assignment using a two temperature technique in a supersonic jet
Authors: Svoboda Vít , Horká-Zelenková Veronika , Rakovský Jozef , Pracna Petr , Votava Ondrej
Published: May 2015

Application of two-temperature analysis in combination with GSCD is demonstrated to provide reliable assignments in methanol high resolution overtone spectra measured in supersonic jet expansion.
Structure and segregation of dopant–defect complexes at grain boundaries in nanocrystalline doped ceria
Authors: Dholabhai Pratik P. , Aguiar Jeffery A. , Wu Longjia , Holesinger Terry G. , Aoki Toshihiro , Castro Ricardo H. R. , Uberuaga Blas P.
Published: May 2015

Σ5 twist grain boundary plane in doped ceria with dopant–defect complexes.
Microwave rehydrated Mg–Al-LDH as base catalyst for the acetalization of glycerol
Authors: Prakruthi H. R. , Chandrashekara B. M. , Jai Prakash B. S. , Bhat Y. S.
Published: May 2015

Acetalization of glycerol with aldehydes to form cyclic acetals is an industrially important reaction and is generally carried out using acid catalysts.
Similarities and differences between aromatic-based and olefin-based cycles in H-SAPO-34 and H-SSZ-13 for methanol-to-olefins conversion: insights from energetic span model
Authors: Wang Chuan-Ming , Wang Yang-Dong , Du Yu-Jue , Yang Guang , Xie Zai-Ku
Published: May 2015

Both aromatic-based and olefin-based cycles involve similar sequences of elementary steps. Energetic span model analysis indicates olefins are active hydrocarbon pool species in H-SAPO-34 and H-SSZ-13 for MTO conversion.
Composite silica coated gold nanosphere and quantum dots nanoparticles for X-ray CT and fluorescence bimodal imaging
Authors: Song Ji-Tao , Yang Xiao-Quan , Zhang Xiao-Shuai , Yan Dong-Mei , Yao Ming-Hao , Qin Meng-Yao , Zhao Yuan-Di
Published: May 2015

A composite nanoparticle containing QDs and Au was fabricated, and it was used for CT and fluorescence dual mode imaging simultaneously.
Monomeric and oligomeric flavan-3-ols and antioxidant activity of leaves from different Laurus sp.
Authors: Vinha Ana F. , Guido Luís F. , Costa Anabela S. G. , Alves Rita C. , Oliveira M. Beatriz P. P.
Published: May 2015

Flavon-3-ols ofL. nobilisL.,L. azorica, andL. novocanariensisleaves were analysed by HPLC-DAD-ESI-MS/MS.
Association between dietary phytoestrogen intake and bone mineral density varied with estrogen receptor alpha gene polymorphisms in southern Chinese postmenopausal women
Authors: Luo Dan , Liu Yongfei , Zhou Yin , Chen Zongwei , Yang Ling , Liu Yong , Xu Qunying , Xu Hong , Kuang Haibin , Huang Qiren , He Ming , Peng Weijie
Published: May 2015

The association of dietary phytoestrogen and BMD varied with ERα gene polymorphisms.
Sulforaphane protected the injury of human vascular endothelial cell induced by LPC through up-regulating endogenous antioxidants and phase II enzymes
Authors: Li Baolong , Tian Sicong , Liu Xu , He Canxia , Ding Zhongqing , Shan Yujuan
Published: May 2015

Sulforaphane (SFN), which is an isothiocyanate (ITC) that is found in cruciferous vegetables, has received considerable attention because of its beneficial effects.
An infrared spectroscopic study of the nature of zinc carboxylates in oil paintings
Authors: Hermans Joen J. , Keune Katrien , van Loon Annelies , Iedema Piet D.
Published: May 2015

A systematic search to explain the COO− vibration band shift for zinc carboxylates formed in a work by van Gogh.
Pb isotope analysis of ng size samples by TIMS equipped with a 1013 Ω resistor using a 207Pb–204Pb double spike
Authors: Klaver Martijn , Smeets Richard J. , Koornneef Janne M. , Davies Gareth R. , Vroon Pieter Z.
Published: May 2015

The use of a 1013 Ω amplifier to increase the 204Pb signal enables high-precision, double spike Pb isotope data to be obtained for ng-size Pb samples.
Mathematical modeling deciphers the benefits of alternatively-designed conserved activatory and inhibitory gene circuits
Authors: Ay Ahmet , Wilner Natalie , Yildirim Necmettin
Published: May 2015

Cells employ a variety of mechanisms as a response to external signals to maintain cellular homeostasis.
Highly monodisperse low-magnetization magnetite nanocubes as simultaneous T1–T2 MRI contrast agents
Authors: Sharma V. K. , Alipour A. , Soran-Erdem Z. , Aykut Z. G. , Demir H. V.
Published: May 2015

We reported highly crystalline, monodisperse and low-magnetization magnetite nanocubes as potential dual-modal contrast agents exhibiting high longitudinal (r1 ∼ 5.23 mM−1 s−1) and transverse (r2 ∼ 89.68 mM−1 s−1) relaxivities.
Induction of apoptosis in human cancer cells by targeting mitochondria with gold nanoparticles
Authors: Mkandawire M. M. , Lakatos M. , Springer A. , Clemens A. , Appelhans D. , Krause-Buchholz U. , Pompe W. , Rödel G. , Mkandawire M.
Published: May 2015

Gold nanoparticles conjugated with mitochondria-targeting mitoTGFP and coated with 3rdgeneration dendrimers successfully reached the mitochondrion in a human cancer cell, while both unconjugated and uncoated AuNPs are encapsulated in endosomes and exocytosed.
Stabilization of fullerene-like boron cages by transition metal encapsulation
Authors: Lv Jian , Wang Yanchao , Zhang Lijun , Lin Haiqing , Zhao Jijun , Ma Yanming
Published: May 2015

With the help of suitable transition metal encapsulation, the medium-size B24fullerene-like cage of high symmetry can be stabilized.
Morphology and crystallinity control of ultrathin TiO2 layers deposited on carbon nanotubes by temperature-step atomic layer deposition
Authors: Guerra-Nuñez Carlos , Zhang Yucheng , Li Meng , Chawla Vipin , Erni Rolf , Michler Johann , Park Hyung Gyu , Utke Ivo
Published: May 2015

A new strategy to tailor the surface and interface of ultrathin TiO2 coatings deposited by “temperature-step” atomic layer deposition with complete surface coverage of non-functionalized multiwall carbon nanotubes.
MRI-visible liposome nanovehicles for potential tumor-targeted delivery of multimodal therapies
Authors: Ren Lili , Chen Shizhen , Li Haidong , Zhang Zhiying , Ye Chaohui , Liu Maili , Zhou Xin
Published: May 2015

The theranostic liposomal drug delivery system can act as an effective nanoplatform integrating targeted drug delivery, controlled release, MRI real-time monitoring and diagnostic functions.
Controllable poly-crystalline bilayered and multilayered graphene film growth by reciprocal chemical vapor deposition
Authors: Wu Qinke , Jung Seong Jun , Jang Sung Kyu , Lee Joohyun , Jeon Insu , Suh Hwansoo , Kim Yong Ho , Lee Young Hee , Lee Sungjoo , Song Young Jae
Published: May 2015

We report the selective growth of multi-layer graphene or a bilayer graphene film by reciprocal chemical vapor deposition.
Construction of regio- and stereoregular poly(enaminone)s by multicomponent tandem polymerizations of diynes, diaroyl chloride and primary amines
Authors: Deng Haiqin , Hu Rongrong , Leung Anakin C. S. , Zhao Engui , Lam Jacky W. Y. , Tang Ben Zhong
Published: May 2015

An atom-economical multicomponent tandem polymerization was developed to afford multifunctional regio- and stereoregular conjugated poly(enaminone)s.
Cerium-based porous coordination polymers with hierarchical superstructures: fabrication, formation mechanism and their thermal conversion to hierarchical CeO2
Authors: Zhao Yong-Xia , Nie Zhi-Wen , Shi Meng-Meng , Zeng Cheng-Hui , Li Yuan , Wang Lei , Zhong Sheng-Liang
Published: May 2015

Novel three-dimensional (3D) ceria hierarchical structures have been prepared via a thermolysis of the corresponding porous coordination polymer precursors.
Performance of silicon rubber coated polyetherimide hollow fibers for CO2 removal via a membrane contactor
Authors: Hashemifard S. A. , Ismail A. F. , Matsuura T. , DashtArzhandi M. Rezaei
Published: May 2015

This study focuses on the effect of a silicon rubber coating technique on the hollow fiber membrane contactor for the purpose of CO2 removal.
Highly selective fluorimetric sensor for Cu2+and Hg2+using a benzothiazole-based receptor in semi-aqueous media and molecular docking studies
Authors: Wagh Yogesh B. , Kuwar Anil , Sahoo Suban K. , Gallucci Judith , Dalal Dipak S.
Published: May 2015

A new chemosensor (Z)-ethyl 2-((Z)-2-(benzo[d]thiazol-2-ylimino)-4-oxo-3-phenylthiazolidin-5-ylidene)acetate (receptor1) was designed and synthesized under catalyst-free conditions.
Difunctional biogenic Au nanoparticles for colorimetric detection and removal of Hg2+
Authors: Zhou Hao , Qu Yuanyuan , Li Duanxing , Zhang Xuwang , Ma Qiao , Shen Wenli , Zhou Jiti
Published: May 2015

Biogenic Au nanoparticles (AuNPs) produced by Cupriavidus metallidurans SHE could act as a colorimetric sensor and scavenger of Hg2+ based on biological reduction mediated formation of an amalgam.
Unexpected surface superparamagnetism in antiferromagnetic Cr2O3 nanoparticles
Authors: Yang Zhaolong , Zhang Jing , Gao Daqiang , Zhu Zhonghua , Yang Guijin , Xue Desheng
Published: May 2015

We report an unexpected superparamagnetic behavior of antiferromagnetic Cr2O3 nanoparticles.
Quinoline benzimidazole-conjugate for the highly selective detection of Zn(ii) by dual colorimetric and fluorescent turn-on responses
Authors: Velmurugan K. , Raman A. , Don Derin , Tang Lijun , Easwaramoorthi S. , Nandhakumar R.
Published: May 2015

A quinoline benzimidazole-conjugate (QBC) has been synthesized for the highly selective detection of Zn(ii) both by colorimetry and fluorimetry.
Novel environment friendly inorganic red pigments based on Bi4V2O11
Authors: Wendusu Wendusu , Shiraishi Atsunori , Takeuchi Naoki , Masui Toshiyuki , Imanaka Nobuhito
Published: May 2015

Novel inorganic red pigment, (Bi0.92Zr0.07Al0.01)4V2O11.34, was successfully synthesized as an environmental friendly inorganic material, and its red hue was much higher than that of a commercial iron oxide pigment.
pH-sensitive ternary nanoparticles for nonviral gene delivery
Authors: Zhang Ming-Hua , Gu Zhi-Peng , Zhang Xi , Fan Min-Min
Published: May 2015

In this study, a ternary DNA delivery system with the charge conversional ability by deshielding the PEG layer at tumor acidity was designed.
Controllable synthesis of In2O3 octodecahedra exposing {110} facets with enhanced gas sensing performance
Authors: Liu Jijiang , Chen Gang , Yu Yaoguang , Wu Yalin , Zhou Mingjun , Zhang Hongquan , Lv Chade , Zheng Yi , He Fang
Published: May 2015

In2O3 octodecahedra enclosed by {110} facets with high concentration of oxygen vacancy have been prepared for enhanced gas sensing performance.
A novel efficient mesoporous silica assisted green emitting phosphors-an exotic remote phosphor with high quantum yield
Authors: Gandhi Sakthivel , Sakthivel Kavitha , Kwon Bong-Joon , Woo Hyun-Joo , Lee Ho Sueb , Shin Dong Soo , Jang Kiwan
Published: May 2015

The MPS assisted remote phosphor attached proto-type LED exhibits a very strong green emission and this can be utilized as an efficient green component for various applications apart from the white LED productions.
A hydrophilic conjugate approach toward the design and synthesis of ursolic acid derivatives as potential antidiabetic agent
Authors: Huang TianMing , Wu PanPan , Cheng AnMing , Qin Jing , Zhang Kun , Zhao SuQing
Published: May 2015

In this study, a series of novel ursolic acid (UA) derivatives were designed and synthesized successfully via conjugation of hydrophilic and polar groups at 3-OH and/or 17-COOH position.
Electrodeposition and characterization of Ni–SiC composite coatings from deep eutectic solvent
Authors: Li Ruiqian , Chu Qingwei , Liang Jun
Published: May 2015

The micro or nano-sized SiC particles have significant effects on nucleation/growth process, morphology, microhardness and trilogical performance of Ni coatings.
Magnetically driven superhydrophobic meshes with the capacity of moving at air/water and oil/water interfaces
Authors: Zhang Jihua , Feng Huadong , Zao Weitao , Zhao Yunfeng , Zhang Hui , Liu Yibin
Published: May 2015

Under a magnetic field, the micro-robot could move directionally at air/water and oil/water interfaces in a closed system.
Ion exchange synthesis of an all tungsten based Z-scheme photocatalytic system with highly enhanced photocatalytic activity
Authors: Zheng Yi , Chen Gang , Yu Yaoguang , Sun Jingxue , Zhou Yansong , He Fang
Published: May 2015

The first example of an all tungsten based Z-scheme photocatalyst (composed of WO3·0.33H2O and PbWO4) has been synthesized via an ion exchange method.
Impact of rapid ozone degradation on the structure and properties of polypropylene using a reactive extrusion process
Authors: He Guang-Jian , Zheng Ting-Ting , Ke Ding-Meng , Cao Xian-Wu , Yin Xiao-Chun , Xu Bai-Ping
Published: May 2015

Schematics of rapid ozone degradation of polypropylene using a reactive extrusion process.
Chain entanglement and molecular dynamics of solution-cast PMMA/SMA blend films affected by hydrogen bonding between casting solvents and polymer chains
Authors: Lv Yuhua , Lin Yu , Chen Feng , Li Fang , Shangguan Yonggang , Zheng Qiang
Published: May 2015

The effects of intermolecular interaction between casting solvents and polymer chains on molecular entanglement and dynamics in solution-cast PMMA/SMA films were probed by rheological, dielectric and modulated DSC methods.
Enhanced durability of gold-coated current collectors for high power electrochemical devices
Authors: Ryu Won-Hee , Cho Keun-Woo , Hong Kyung-Sik , Kwon Hyuk-Sang
Published: May 2015

The improved durability of the current collector for high power electrochemical devices is achieved by manipulating the Au coating layer using the electrochemical deposition method.
Design, syntheses and evaluation of benzoylthioureas as urease inhibitors of agricultural interest
Authors: Brito Tiago O. , Souza Aline X. , Mota Yane C. C. , Morais Vinicius S. S. , de Souza Leandro T. , de Fátima Ângelo , Macedo Fernando , Modolo Luzia V.
Published: May 2015

Urea is one of the most used nitrogen fertilizers worldwide.
Chemical principles underpinning the performance of the metal–organic framework HKUST-1
Authors: Hendon Christopher H. , Walsh Aron
Published: May 2015

HKUST-1 has emerged as the bastion of multifunctional hybrid solids; we discuss the past, present and future of Cu-based metal–organic frameworks.
Celebrating Soft Matter's 10th anniversary: screening of the calcium-induced spontaneous curvature of lipid membranes
Authors: Simunovic Mijo , Lee Ka Yee C. , Bassereau Patricia
Published: May 2015

Calcium induces a positive spontaneous curvature in negatively charged membranes, in a process completely screened by sodium.
Steady shearing flows of deformable, inelastic spheres
Authors: Berzi Diego , Jenkins James T.
Published: May 2015

We extend models for granular flows based on the kinetic theory beyond the critical volume fraction at which a rate-independent contribution to the stresses develops.
Enhancement of capacitive deionization capacity of hierarchical porous carbon
Authors: Chao Lumeng , Liu Zhenyu , Zhang Guoxin , Song Xiaona , Lei Xiaodong , Noyong Michael , Simon Ulrich , Chang Zheng , Sun Xiaoming
Published: May 2015

Hierarchical porous carbon derived from the one-step pyrolysis of ethylenediaminetetraacetic acid exhibited impressive capacitive deionization capacity.
Nanoparticle prepared mechanically stable hierarchically porous silica granulates and their application as oxygen carrier supports for chemical looping combustion
Authors: Liu Yujing , Kirchesch Peter , Graule Thomas , Liersch Antje , Clemens Frank
Published: May 2015

Viamodifying the templating synthesis of hierarchical nanomaterials, a strategy was proposed to generate bi-modal porous granulates with mechanical stability.
Intelligent rubber with tailored properties for self-healing and shape memory
Authors: Wang Dong , Guo Jing , Zhang Huan , Cheng Beichen , Shen Heng , Zhao Ning , Xu Jian
Published: May 2015

Thermoreversible rubbers are prepared by the thiol-ene functionalized polybutadiene oligomers via dynamic ionic hydrogen bonds and covalent cross-links, exhibiting tailored properties for self-healing and shape memory functions.
Enhanced hydrogen evolution catalysis from osmotically swollen ammoniated MoS2
Authors: Wu Zhuangzhi , Tang Chaoyun , Zhou Pan , Liu Zhihong , Xu Yushuai , Wang Dezhi , Fang Baizeng
Published: May 2015

Osmotically swollen ammoniated MoS2 was obtained via a facile hydrothermal route, exhibiting excellent HER performances due to its improved electrical conductivity.
The effect of energetically coated ZrOx on enhanced electrochemical performances of Li(Ni1/3Co1/3Mn1/3)O2 cathodes using modified radio frequency (RF) sputtering
Authors: Lee Ji-Hoon , Kim Ji Woo , Kang Ho-Young , Kim Seul Cham , Han Sang Sub , Oh Kyu Hwan , Lee Se-Hee , Joo Young-Chang
Published: May 2015

By introducing the ZrOx layer coated using a novel sputtering, the electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O2 under liquid and solid electrolyte was greatly improved.
2.5 V compact supercapacitors based on ultrathin carbon nanotube films for AC line filtering
Authors: Yoo Yongju , Kim Seungwook , Kim Byungwoo , Kim Woong
Published: May 2015

We demonstrate 2.5 V AC-line-filtering supercapacitors with unprecedentedly high volumetric energy density based on ultrathin carbon nanotube films.
Oligothiophene-bridged perylene diimide dimers for fullerene-free polymer solar cells: effect of bridge length
Authors: Wang Jiayu , Yao Yuehan , Dai Shuixing , Zhang Xinping , Wang Wei , He Qiao , Han Lei , Lin Yuze , Zhan Xiaowei
Published: May 2015

A series of PDI dimers with oligothiophenes as bridges were designed, theoretically calculated, synthesized, and developed as electron acceptors for polymer solar cells. The effects of oligothiophene bridge length were investigated.
A Cu foam cathode used as a Pt–RGO catalyst matrix to improve CO2 reduction in a photoelectrocatalytic cell with a TiO2 photoanode
Authors: Cheng Jun , Zhang Meng , Liu Jianzhong , Zhou Junhu , Cen Kefa
Published: May 2015

A Cu foam cathode was used as a Pt–RGO catalyst matrix for CO2 reduction in a photoelectrocatalytic cell with a TiO2 nanotube photoanode.
A low cost azomethine-based hole transporting material for perovskite photovoltaics
Authors: Petrus M. L. , Bein T. , Dingemans T. J. , Docampo P.
Published: May 2015

EDOT-OMeTPA was prepared in a simple condensation reaction. When applied to perovskite solar cells, the new hole transporter shows comparable performance to state-of-the-art Spiro-OMeTAD; however the estimated cost contribution is two orders of magnitude lower.
Integrated 3D conducting polymer-based bioelectronics for capture and release of circulating tumor cells
Authors: Hsiao Yu-Sheng , Ho Bo-Cheng , Yan Hong-Xin , Kuo Chiung-Wen , Chueh Di-Yen , Yu Hsiao-hua , Chen Peilin
Published: May 2015

3D conducting polymer-based bioelectronic interface (BEI) devices for dynamically controlling circulating tumor cell capture/release performance through the cyclic potential of electrical stimulation.
A paper based, all organic, reference-electrode-free ion sensing platform
Authors: Kofler Johannes , Nau Sebastian , List-Kratochvil Emil J. W.
Published: May 2015

We present a reference-electrode free, all organic K+ sensitive ion sensing platform fabricated by simplest means on a plain sheet of paper.
The effect of regioisomerism on the solid-state fluorescence of bis(piperidyl)anthracenes: structurally simple but bright AIE luminogens
Authors: Sasaki Shunsuke , Igawa Kazunobu , Konishi Gen-ichi
Published: May 2015

Bis(piperidyl)anthracenes were developed as structurally simple, bright and colour tuneable AIE luminogens and their emission mechanisms were analysed.
Enhanced ESD power clamp for antenna switch controller with SOI CMOS technology
Authors: Yu Kai , Li Sizhen , Zhang Zhihao , Zhang Gary , Tong Qiaoling , Zou Xuecheng
Published: May 2015

An enhanced electrostatic discharge (ESD) power clamp for an antenna switch controller with silicon‐on‐insulator (SOI) complementary metal‐oxide‐semiconductor (CMOS) technology is presented. The gate drive voltages of larger n‐type metal‐oxide‐semiconductor transistors in a stacked configuration of a RC‐triggered power clamp have been optimised to obtain larger discharging capability and shorter turn‐on time compared to the conventional topology. The proposed ESD power clamp circuits are implemented in a double‐pole five‐throw antenna switch controller and the experimental results confirm the validity of this approach.
QR decomposition aided belief propagation detector for MIMO systems
Authors: Park Sangjoon , Choi Sooyong
Published: May 2015

A QR decomposition aided belief propagation (QR‐BP) detector for multiple‐input multiple‐output (MIMO) systems is proposed. Before the iterative message passing process, linear transformation is performed by using the unitary matrix obtained from the QR decomposition of the original MIMO channel matrix. Then, the original MIMO channel matrix is replaced by an upper triangular channel matrix after the linear transformation and the proposed QR‐BP detector operates over the new bipartite graph from the upper triangular channel matrix. Therefore, the number of cycles in the new bipartite graph is significantly decreased when compared with the fully connected bipartite graph from the original MIMO channel matrix. In addition, since the unitary matrix is utilised for the linear transformation, there is no information loss on the likelihoods estimated from noisy observations. Simulation results verify that the proposed QR‐BP detector outperforms existing BP detectors and achieves near‐optimum performance close to the maximum‐likelihood detector in terms of bit error ratio.
Graded dielectric inhomogeneous streamlined radome for airborne applications
Authors: Nair R.U. , Suprava M. , Jha R.M.
Published: May 2015

A graded dielectric inhomogeneous nosecone radome design with superior electromagnetic (EM) performance characteristics for airborne applications is presented. The radome wall is designed in such a way that the middle layer has the maximum dielectric parameters (dielectric constant and electric loss tangent). On either side of the middle layer, the dielectric parameters of the constituent layers decrease in a graded (or step‐wise) manner. This wall configuration facilitates better impedance matching as required for radome applications. The computation of the EM performance parameters of a tangent ogive nosecone radome based on the above‐mentioned wall configuration, enclosing an X‐band slotted waveguide planar array antenna, is carried out using ‘geometric optics’ based three‐dimensional ray tracing along with the ‘aperture integration’ method. EM performance analysis shows that the proposed graded inhomogeneous dielectric radome design is a better choice for streamlined airborne radomes compared with the ‘variable thickness radome’ (VTR) designs based on monolithic half‐wave and multilayered radome wall configurations. Furthermore, it excludes the constraints on fabrication that generally occur in the case of streamlined airborne VTRs.
Fault detection for a class of non‐linear networked control systems in the presence of Markov sensors assignment with partially known transition probabilities
Authors: Wang Yanqian , Lu Junwei , Li Ze , Chu Yuming
Published: May 2015

In this study, the problem of fault detection for a class of discrete‐time non‐linear networked control systems is investigated. An event modelled as a Markov chain taking matrix values in a certain set with partially known transition probabilities is utilised to characterise the phenomenon of the sensors assignment. A full‐order mode‐dependent fault detection filter is constructed and the corresponding fault detection problem is converted into an H∞ filtering problem of a Markov jump system with partially known transition probabilities. Sufficient conditions for the existence of the fault detection filter are formulated as a linear matrix inequality‐based convex optimisation problem. If the convex optimisation problem has a feasible solution, the corresponding fault detection filter parameters are determined. A numerical example with four cases of transition probability matrices is presented to show the usefulness of the developed method.
Generalised Kalman–Yakubovich–Popov lemma with its application in finite frequency positive realness control for two‐dimensional continuous‐discrete systems in the Roesser model form
Authors: Wang Lanning , Wang Weiqun , Zhang Guangchen , Chen Weimin
Published: May 2015

This study is concerned with the problem of generalised Kalman–Yakubovich–Popov (GKYP) lemma and its application to two‐dimensional (2D) continuous‐discrete systems described by Roesser model. On the basis of the feature of states in the system, a rectangular finite frequency range is characterised by a linear matrix inequality and then combined with 𝒮‐procedure, the GKYP lemma is developed for 2D continuous‐discrete systems in Roesser model. As special cases of this lemma, 2D continuous‐discrete case finite frequency bounded realness and positive realness are investigated as well. Furthermore, the finite frequency 2D positive realness control problem via state‐feedback controllers are considered based on the developed lemma. Finally, numerical examples are given to illustrate the effectiveness of the proposed method.
Delay‐incorporating observability and predictability analysis of safety‐critical continuous‐time systems
Authors: Eskandari Neda , Dumont Guy A. , Wang Z. Jane
Published: May 2015

The authors suggest a framework for human–automation interaction in safety‐critical continuous systems under shared control and consider continuous‐time linear time‐invariant (LTI) dynamics to formalise our physical models mathematically. Their goal is to determine whether or not a given user‐interface provides the information required for a certain task, under the assumption that the user does not have access to any information beyond what is provided in the display. They identify observability‐based conditions under which a user‐interface provides the user with necessary information to accomplish a given task, formulated as a subset of the state space. They, therefore formulate the novel delay‐incorporating user‐observable subspace, and the delay‐incorporating user‐predictable subspace and compare them with the space spanned by the combination of the states which create the task. They assume the user is a special type of observer, with capabilities corresponding to different levels of knowledge regarding the current user's input and its derivatives. In addition, they consider that state reconstruction and prediction incorporate a processing delay.
Parameter estimation for stochastic hybrid model applied to urban traffic flow estimation
Authors: Sutarto Herman Yoseph , Boel René K. , Joelianto Endra
Published: May 2015

This study proposes a novel data‐based approach for estimating the parameters of a stochastic hybrid model describing the traffic flow in an urban traffic network with signalized intersections. The model represents the evolution of the traffic flow rate, measuring the number of vehicles passing a given location per time unit. This traffic flow rate is described using a mode‐dependent first‐order autoregressive (AR) stochastic process. The parameters of the AR process take different values depending on the mode of traffic operation – free flowing, congested or faulty – making this a hybrid stochastic process. Mode switching occurs according to a first‐order Markov chain. This study proposes an expectation‐maximization (EM) technique for estimating the transition matrix of this Markovian mode process and the parameters of the AR models for each mode. The technique is applied to actual traffic flow data from the city of Jakarta, Indonesia. The model thus obtained is validated by using the smoothed inference algorithms and an online particle filter. The authors also develop an EM parameter estimation that, in combination with a time‐window shift technique, can be useful and practical for periodically updating the parameters of hybrid model leading to an adaptive traffic flow state estimator.
Fault detection for multi‐rate sensor fusion under multiple uncertainties
Authors: Geng Hang , Liang Yan , Xu Linfeng
Published: May 2015

In multi‐sensor fusion, it is hard to guarantee that all sensors have an identical sampling rate, especially in the distributive and/or heterogeneous case. Meanwhile, system modelling may face the coexistence of multiple uncertainties including stochastic noise, unknown input (UI) and faults in complex environment. To this end, the authors propose the problem of fault detection for multi‐rate sensor fusion systems subject to UI, stochastic noise with known covariance, and faults imposed on the actuator and sensors. Furthermore, the new form of multi‐rate observer (MRO) is presented and lifted to the single‐rate one with causality constraint for parameter design. Observer parameters are determined optimally in pursuit of the UI decoupling and maximum noise attenuation under the causality constraint. Differing from the traditional observer, the proposed MRO is time varying, that is, its parameters need recursive computation and hence has better adaptability to the effect of uncertainties. Finally, a multi‐rate residual generator is constructed via a hypothesis test in which the threshold is adaptively designed. A numerical example is given to show the effectiveness of their proposed method.