bluuebunny/crossref_metadata_2025 huggingface dataset:
Hyperspectral Microscopy of Near-Infrared Fluorescence Enables 17-Chirality Carbon Nanotube Imaging
Authors: Roxbury Daniel , Jena Prakrit V. , Williams Ryan M. , Enyedi Balázs , Niethammer Philipp , Marcet Stéphane , Verhaegen Marc , Blais-Ouellette Sébastien , Heller Daniel A.
Published: September 2015

The intrinsic near-infrared photoluminescence (fluorescence) of single-walled carbon nanotubes exhibits unique photostability, narrow bandwidth, penetration through biological media, environmental sensitivity and both chromatic variety and range. Biomedical applications exploiting this large family of fluorophores will require the spectral and spatial resolution of individual (n,m) nanotube species’ fluorescence and its modulation within live cells and tissues, which is not possible with current microscopy methods. We present a wide-field hyperspectral approach to spatially delineate and spectroscopically measure single nanotube fluorescence in living systems. This approach resolved up to 17 distinct (n,m) species (chiralities) with single nanotube spatial resolution in live mammalian cells, murine tissues ex vivo and zebrafish endothelium in vivo. We anticipate that this approach will facilitate multiplexed nanotube imaging in biomedical applications while enabling deep-tissue optical penetration and single-molecule resolution in vivo.
Development of Novel Triazolo-Thiadiazoles from Heterogeneous “Green” Catalysis as Protein Tyrosine Phosphatase 1B Inhibitors
Authors: Baburajeev C. P. , Dhananjaya Mohan Chakrabhavi , Ananda Hanumappa , Rangappa Shobith , Fuchs Julian E. , Jagadish Swamy , Sivaraman Siveen Kodappully , Chinnathambi Arunachalam , Ali Alharbi Sulaiman , Zayed M. E. , Zhang Jingwen , Li Feng , Sethi Gautam , Girish Kesturu S. , Bender Andreas , Basappa  , Rangappa Kanchugarakoppal S.
Published: September 2015

Condensed-bicyclic triazolo-thiadiazoles were synthesized via an efficient “green” catalyst strategy and identified as effective inhibitors of PTP1B in vitro. The lead compound, 6-(2-benzylphenyl)-3-phenyl-[1,2,4]triazolo[3][1,3,4]thiadiazole (BPTT) was most effective against human hepatoma cells, inhibits cell invasion and decreases neovasculature in HUVEC and also tumor volume in EAT mouse models. This report describes an experimentally unidentified class of condensed-bicyclic triazolo-thiadiazoles targeting PTP1B and its analogs could be the therapeutic drug-seeds.
Proteomic analysis of endoplasmic reticulum stress responses in rice seeds
Authors: Qian Dandan , Tian Lihong , Qu Leqing
Published: September 2015

The defects in storage proteins secretion in the endosperm of transgenic rice seeds often leads to endoplasmic reticulum (ER) stress, which produces floury and shrunken seeds, but the mechanism of this response remains unclear. We used an iTRAQ-based proteomics analysis of ER-stressed rice seeds due to the endosperm-specific suppression of OsSar1 to identify changes in the protein levels in response to ER stress. ER stress changed the expression of 405 proteins in rice seed by >2.0- fold compared with the wild-type control. Of these proteins, 140 were upregulated and 265 were downregulated. The upregulated proteins were mainly involved in protein modification, transport and degradation and the downregulated proteins were mainly involved in metabolism and stress/defense responses. A KOBAS analysis revealed that protein-processing in the ER and degradation-related proteasome were the predominant upregulated pathways in the rice endosperm in response to ER stress. Trans-Golgi protein transport was also involved in the ER stress response. Combined with bioinformatic and molecular biology analyses, our proteomic data will facilitate our understanding of the systemic responses to ER stress in rice seeds.
TRPV4 channel activation selectively inhibits tumor endothelial cell proliferation
Authors: Thoppil Roslin J. , Adapala Ravi K. , Cappelli Holly C. , Kondeti Vinay , Dudley Andrew C. , Gary Meszaros J. , Paruchuri Sailaja , Thodeti Charles K.
Published: September 2015

Endothelial cell proliferation is a critical event during angiogenesis, regulated by both soluble factors and mechanical forces. Although the proliferation of tumor cells is studied extensively, little is known about the proliferation of tumor endothelial cells (TEC) and its contribution to tumor angiogenesis. We have recently shown that reduced expression of the mechanosensitive ion channel TRPV4 in TEC causes aberrant mechanosensitivity that result in abnormal angiogenesis. Here, we show that TEC display increased proliferation compared to normal endothelial cells (NEC). Further, we found that TEC exhibit high basal ERK1/2 phosphorylation and increased expression of proliferative genes important in the G1/S phase of the cell cycle. Importantly, pharmacological activation of TRPV4, with a small molecular activator GSK1016790A (GSK), significantly inhibited TEC proliferation, but had no effect on the proliferation of NEC or the tumor cells (epithelial) themselves. This reduction in TEC proliferation by TRPV4 activation was correlated with a decrease in high basal ERK1/2 phosphorylation. Finally, using a syngeneic tumor model revealed that TRPV4 activation, with GSK, significantly reduced endothelial cell proliferation in vivo. Our findings suggest that TRPV4 channels regulate tumor angiogenesis by selectively inhibiting tumor endothelial cell proliferation.
Magmatic record of India-Asia collision
Authors: Zhu Di-Cheng , Wang Qing , Zhao Zhi-Dan , Chung Sun-Lin , Cawood Peter A. , Niu Yaoling , Liu Sheng-Ao , Wu Fu-Yuan , Mo Xuan-Xue
Published: September 2015

New geochronological and geochemical data on magmatic activity from the India-Asia collision zone enables recognition of a distinct magmatic flare-up event that we ascribe to slab breakoff. This tie-point in the collisional record can be used to back-date to the time of initial impingement of the Indian continent with the Asian margin. Continental arc magmatism in southern Tibet during 80–40 Ma migrated from south to north and then back to south with significant mantle input at 70–43 Ma. A pronounced flare up in magmatic intensity (including ignimbrite and mafic rock) at ca. 52–51 Ma corresponds to a sudden decrease in the India-Asia convergence rate. Geological and geochemical data are consistent with mantle input controlled by slab rollback from ca. 70 Ma and slab breakoff at ca. 53 Ma. We propose that the slowdown of the Indian plate at ca. 51 Ma is largely the consequence of slab breakoff of the subducting Neo-Tethyan oceanic lithosphere, rather than the onset of the India-Asia collision as traditionally interpreted, implying that the initial India-Asia collision commenced earlier, likely at ca. 55 Ma.
Dose-response Relationship of Serum Uric Acid with Metabolic Syndrome and Non-alcoholic Fatty Liver Disease Incidence: A Meta-analysis of Prospective Studies
Authors: Liu Zhengtao , Que Shuping , Zhou Lin , Zheng Shusen
Published: September 2015

Emerging evidence has shown that serum uric acid (SUA) elevation might cause metabolic derangements, including metabolic syndrome (MetS) and non-alcoholic fatty liver disease (NAFLD); however, magnitude of the risk has not been quantified. We searched PubMed, EMBASE and ISI databases for relevant studies through 10 May 2015. Prospective studies reporting the risk of SUA elevation on the incidence of MetS/NAFLD were enrolled. Pooled HR of MetS was 1.55 (95%CI: 1.40–1.70) for the highest versus lowest SUA categories and 1.05 (95%CI: 1.04–1.07) per incremental increased in SUA of 1 mg/dl. The pooled HR of MetS in younger women was higher than age-matched men and older women (1.17 vs. 1.05 and 1.04, respectively,P < 0.05). Individuals in the highest SUA category had a 40% greater risk of disease NAFLD occurrence. Dose-response increment of NAFLD events was 1.03 (95%CI: 1.02–1.05). A positive relationship with a linear trend for SUA elevation with MetS and NAFLD in different genders was examined by a dose-response meta-analysis (P < 0.001).SUA assay is useful in screening metabolic disorders for linear trend between its elevation and MetS/NAFLD incidence. SUA-lowering therapy is a potential strategy for preventing systemic/hepatic metabolic abnormalities.
On the Structural and Chemical Characteristics of Co/Al2O3/graphene Interfaces for Graphene Spintronic Devices
Authors: Canto Bárbara , Gouvea Cristol P. , Archanjo Bráulio S. , Schmidt João E. , Baptista Daniel L.
Published: September 2015

We report a detailed investigation of the structural and chemical characteristics of thin evaporated Al2O3 tunnel barriers of variable thickness grown onto single-layer graphene sheets. Advanced electron microscopy and spectrum-imaging techniques were used to investigate the Co/Al2O3/graphene/SiO2 interfaces. Direct observation of pinhole contacts was achieved using FIB cross-sectional lamellas. Spatially resolved EDX spectrum profiles confirmed the presence of direct point contacts between the Co layer and the graphene. The high surface diffusion properties of graphene led to cluster-like Al2O3 film growth, limiting the minimal possible thickness for complete barrier coverage onto graphene surfaces using standard Al evaporation methods. The results indicate a minimum thickness of nominally 3 nm Al2O3, resulting in a 0.6 nm rms rough film with a maximum thickness reaching 5 nm.
Dormant phages of Helicobacter pylori reveal distinct populations in Europe
Authors: Vale F. F. , Vadivelu J. , Oleastro M. , Breurec S. , Engstrand L. , Perets T. T. , Mégraud F. , Lehours P.
Published: September 2015

Prophages of Helicobacter pylori, a bacterium known to co-evolve in the stomach of its human host, were recently identified. However, their role in the diversity of H. pylori strains is unknown. We demonstrate here and for the first time that the diversity of the prophage genes offers the ability to distinguish between European populations and that H. pylori prophages and their host bacteria share a complex evolutionary history. By comparing the phylogenetic trees of two prophage genes (integrase and holin) and the multilocus sequence typing (MLST)-based data obtained for seven housekeeping genes, we observed that the majority of the strains belong to the same phylogeographic group in both trees. Furthermore, we found that the Bayesian analysis of the population structure of the prophage genes identified two H. pylori European populations, hpNEurope and hpSWEurope, while the MLST sequences identified one European population, hpEurope. The population structure analysis of H. pylori prophages was even more discriminative than the traditional MLST-based method for the European population. Prophages are new players to be considered not only to show the diversity of H. pylori strains but also to more sharply define human populations.
A peptide identification-free, genome sequence-independent shotgun proteomics workflow for strain-level bacterial differentiation
Authors: Shao Wenguang , Zhang Min , Lam Henry , Lau Stanley C. K.
Published: September 2015

Shotgun proteomics is an emerging tool for bacterial identification and differentiation. However, the identification of the mass spectra of peptides to genome-derived peptide sequences remains a key issue that limits the use of shotgun proteomics to bacteria with genome sequences available. In this proof-of-concept study, we report a novel bacterial fingerprinting method that enjoys the resolving power and accuracy of mass spectrometry without the burden of peptide identification (i.e. genome sequence-independent). This method uses a similarity-clustering algorithm to search for mass spectra that are derived from the same peptide and merge them into a unique consensus spectrum as the basis to generate proteomic fingerprints of bacterial isolates. In comparison to a traditional peptide identification-based shotgun proteomics workflow and a PCR-based DNA fingerprinting method targeting the repetitive extragenic palindromes elements in bacterial genomes, the novel method generated fingerprints that were richer in information and more discriminative in differentiating E. coli isolates by their animal sources. The novel method is readily deployable to any cultivable bacteria and may be used for several fields of study such as environmental microbiology, applied microbiology and clinical microbiology.
Distinctive ocean interior changes during the recent warming slowdown
Authors: Cheng Lijing , Zheng Fei , Zhu Jiang
Published: September 2015

The earth system experiences continuous heat input, but a “climate hiatus” of upper ocean waters has been observed in this century. This leads to a question: where is the extra heat going? Using four in situ observation datasets, we explore the ocean subsurface temperature changes from 2004 to 2013. The observations all show that the ocean has continued to gain heat in this century, which is indicative of anthropogenic global warming. However, a distinctive pattern of change in the interior ocean is observed. The sea surface (1–100 m) temperature has decreased in this century, accompanied by warming in the 101–300 m layer. This pattern is due to the changes in the frequency of El Niño and La Niña events (ENSO characteristics), according to both observations and CMIP5 model simulations. In addition, we show for the first time that the ocean subsurface within 301–700 m experienced a net cooling, indicative of another instance of variability in the natural ocean. Furthermore, the ocean layer of 701–1500 m has experienced significant warming.
Reversible Regulation of Catalytic Activity of Gold Nanoparticles with DNA Nanomachines
Authors: Zhou Peipei , Jia Sisi , Pan Dun , Wang Lihua , Gao Jimin , Lu Jianxin , Shi Jiye , Tang Zisheng , Liu Huajie
Published: September 2015

Reversible catalysis regulation has gained much attention and traditional strategies utilized reversible ligand coordination for switching catalyst’s conformations. However, it remains challenging to regulate the catalytic activity of metal nanoparticle-based catalysts. Herein, we report a new DNA nanomachine-driven reversible nano-shield strategy for circumventing this problem. The basic idea is based on the fact that the conformational change of surface-attached DNA nanomachines will cause the variation of the exposed surface active area on metal nanoparticles. As a proof-of-concept study, we immobilized G-rich DNA strands on gold nanoparticles (AuNPs) which have glucose oxidase (GOx) like activity. Through the reversible conformational change of the G-rich DNA between a flexible single-stranded form and a compact G-quadruplex form, the catalytic activity of AuNPs has been regulated reversibly for several cycles. This strategy is reliable and robust, which demonstrated the possibility of reversibly adjusting catalytic activity with external surface coverage switching, rather than coordination interactions.
Modulation of gut microbiota by berberine and metformin during the treatment of high-fat diet-induced obesity in rats
Authors: Zhang Xu , Zhao Yufeng , Xu Jia , Xue Zhengsheng , Zhang Menghui , Pang Xiaoyan , Zhang Xiaojun , Zhao Liping
Published: September 2015

Accumulating evidence suggests that the gut microbiota is an important factor in mediating the development of obesity-related metabolic disorders, including type 2 diabetes. Metformin and berberine, two clinically effective drugs for treating diabetes, have recently been shown to exert their actions through modulating the gut microbiota. In this study, we demonstrated that metformin and berberine similarly shifted the overall structure of the gut microbiota in rats. Both drugs showed reverting effects on the high-fat diet-induced structural changes of gut microbiota. The diversity of gut microbiota was significantly reduced by both berberine- and metformin-treatments. Nearest shrunken centroids analysis identified 134 operational taxonomic units (OTUs) responding to the treatments, which showed close associations with the changes of obese phenotypes. Sixty out of the 134 OTUs were decreased by both drugs, while those belonging to putative short-chain fatty acids (SCFA)-producing bacteria, including Allobaculum, Bacteriodes, Blautia, Butyricoccus and Phascolarctobacterium, were markedly increased by both berberine and, to a lesser extent, metformin. Taken together, our findings suggest that berberine and metformin showed similarity in modulating the gut microbiota, including the enrichment of SCFA-producing bacteria and reduction of microbial diversity, which may contribute to their beneficial effects to the host.
A whole-cell tumor vaccine modified to express fibroblast activation protein induces antitumor immunity against both tumor cells and cancer-associated fibroblasts
Authors: Chen Meihua , Xiang Rong , Wen Yuan , Xu Guangchao , Wang Chunting , Luo Shuntao , Yin Tao , Wei Xiawei , Shao Bin , Liu Ning , Guo Fuchun , Li Meng , Zhang Shuang , Li Minmin , Ren Kexing , Wang Yongsheng , Wei Yuquan
Published: September 2015

Cancer-associated fibroblasts (CAFs) are common components of the tumor-suppressive microenvironment and are a major determinant of the poor outcome of therapeutic vaccination. In this study, we modified tumor cells to express the fibroblast activation protein (FAP), which is highly expressed by CAFs, to potentially improve whole-cell tumor vaccines by targeting both tumor cells and CAFs. Tumor cells were transfected with murine FAP plasmids bearing the cationic lipid DOTAP. Its antitumor effects were investigated in three established tumor models. Vaccination with tumor cells expressing FAP eliminated solid tumors and tumors resulting from hematogenous dissemination. This antitumor immune response was mediated by CD8+ T cells. Additionally, we found that CAFs were significantly reduced within the tumors. Furthermore, this vaccine enhanced the infiltration of CD8+ T lymphocytes and suppressed the accumulation of immunosuppressive cells in the tumor microenvironment. Our results indicated that the FAP-modified whole-cell tumor vaccine induced strong antitumor immunity against both tumor cells and CAFs and reversed the immunosuppressive effects of tumors by decreasing the recruitment of immunosuppressive cells and enhancing the recruitment of effector T cells. This conclusion may have important implications for the clinical use of genetically modified tumor cells as cancer vaccines.
Elevated temperature altered photosynthetic products in wheat seedlings and organic compounds and biological activity in rhizopshere soil under cadmium stress
Authors: Jia Xia , Zhao YongHua , Wang WenKe , He Yunhua
Published: September 2015

The objective of this study was to investigate the effects of slightly elevated atmospheric temperature in the spring on photosynthetic products in wheat seedlings and on organic compounds and biological activity in rhizosphere soil under cadmium (Cd) stress. Elevated temperature was associated with increased soluble sugars, reducing sugars, starch and total sugars and with decreased amino acids in wheat seedlings under Cd stress. Elevated temperature improved total soluble sugars, free amino acids, soluble phenolic acids and organic acids in rhizosphere soil under Cd stress. The activity of amylase, phenol oxidase, invertase, β-glucosidase andl-asparaginase in rhizosphere soil was significantly improved by elevated temperature under Cd stress; while cellulase, neutral phosphatase and urease activity significantly decreased. Elevated temperature significantly improved bacteria, fungi, actinomycetes and total microorganisms abundance and fluorescein diacetate activity under Cd stress. In conclusion, slightly elevated atmospheric temperature in the spring improved the carbohydrate levels in wheat seedlings and organic compounds and biological activity in rhizosphere soil under Cd stress in the short term. In addition, elevated atmospheric temperature in the spring stimulated available Cd by affecting pH, DOC, phenolic acids and organic acids in rhizosphere soil, which resulted in the improvement of the Cd uptake by wheat seedlings.
Nano-fabrication of molecular electronic junctions by targeted modification of metal-molecule bonds
Authors: Jafri S. Hassan M. , Löfås Henrik , Blom Tobias , Wallner Andreas , Grigoriev Anton , Ahuja Rajeev , Ottosson Henrik , Leifer Klaus
Published: September 2015

Reproducibility, stability and the coupling between electrical and molecular properties are central challenges in the field of molecular electronics. The field not only needs devices that fulfill these criteria but they also need to be up-scalable to application size. In this work, few-molecule based electronics devices with reproducible electrical characteristics are demonstrated. Our previously reported 5 nm gold nanoparticles (AuNP) coated with ω-triphenylmethyl (trityl) protected 1,8-octanedithiol molecules are trapped in between sub-20 nm gap spacing gold nanoelectrodes forming AuNP-molecule network. When the trityl groups are removed, reproducible devices and stable Au-thiol junctions are established on both ends of the alkane segment. The resistance of more than 50 devices is reduced by orders of magnitude as well as a reduction of the spread in the resistance histogram is observed. By density functional theory calculations the orders of magnitude decrease in resistance can be explained and supported by TEM observations thus indicating that the resistance changes and strongly improved resistance spread are related to the establishment of reproducible and stable metal-molecule bonds. The same experimental sequence is carried out using 1,6-hexanedithiol functionalized AuNPs. The average resistances as a function of molecular length, demonstrated herein, are comparable to the one found in single molecule devices.
Breathing silicon anodes for durable high-power operations
Authors: Hwang Chihyun , Joo Sehun , Kang Na-Ri , Lee Ungju , Kim Tae-Hee , Jeon Yuju , Kim Jieun , Kim Young-Jin , Kim Ju-Young , Kwak Sang-Kyu , Song Hyun-Kon
Published: September 2015

Silicon anode materials have been developed to achieve high capacity lithium ion batteries for operating smart phones and driving electric vehicles for longer time. Serious volume expansion induced by lithiation, which is the main drawback of silicon, has been challenged by multi-faceted approaches. Mechanically rigid and stiff polymers (e.g. alginate and carboxymethyl cellulose) were considered as the good choices of binders for silicon because they grab silicon particles in a tight and rigid way so that pulverization and then break-away of the active mass from electric pathways are suppressed. Contrary to the public wisdom, in this work, we demonstrate that electrochemical performances are secured better by letting silicon electrodes breathe in and out lithium ions with volume change rather than by fixing their dimensions. The breathing electrodes were achieved by using a polysaccharide (pullulan), the conformation of which is modulated from chair to boat during elongation. The conformational transition of pullulan was originated from its α glycosidic linkages while the conventional rigid polysaccharide binders have β linkages.
Determination of bosutinib in mice plasma and tissue by UPLC-MS/MS and its application to the pharmacokinetic and tissue distribution study
Authors: Wang Linxia , Tang Luming , Zheng Yi , Pan Guoquan , Zhu Wei , Pan Chenwei , Zhu Lihe
Published: September 2015

A sensitive and rapid ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was developed to determine bosutinib in mice plasma and tissue using diazepam as the internal standard (IS).
Visualising the problems with balancing lithium–sulfur batteries by “mapping” internal resistance
Authors: Lacey Matthew J. , Edström Kristina , Brandell Daniel
Published: September 2015

Stability and failure mechanisms in optimised lithium–sulfur cells are studied with a new, versatile and convenient approach to tracking changes in resistance with automated data analysis.
Electronic storage capacity of ceria: role of peroxide in Aux supported on CeO2(111) facet and CO adsorption
Authors: Liu Yinli , Li Huiying , Yu Jun , Mao Dongsen , Lu Guanzhong
Published: September 2015

Au adsorbs on CeO2(111) with an O vacancy to form Auδ−, which is not favorable for CO adsorption. After peroxide formed on CeO2(111) with an O vacancy, Au is oxidized to Auδ+, which improves CO adsorption on Au/CeO2, where CeO2 acts as an electron buffer.
Bombardment induced ion transport – part IV: ionic conductivity of ultra-thin polyelectrolyte multilayer films
Authors: Wesp Veronika , Hermann Matthias , Schäfer Martin , Hühn Jonas , Parak Wolfgang J. , Weitzel Karl-Michael
Published: September 2015

Low energy bombardment induced ion transport (BIIT) studies demonstrate that the ionic conductance of ultra-thin polyelectrolyte multilayer (PEM) films depends non-monotonically on the number of bilayers.
Density functional reactivity theory study of SN2 reactions from the information-theoretic perspective
Authors: Wu Zemin , Rong Chunying , Lu Tian , Ayers Paul W. , Liu Shubin
Published: September 2015

Strong linear correlations were unveiled between barrier heights of bimolecular nucleophilic substitution (SN2) reactions and quantities from the information-theoretic approach.
Investigation of Fickian diffusion in the ternary mixtures of water–ethanol–triethylene glycol and its binary pairs
Authors: Legros J. C. , Gaponenko Y. , Mialdun A. , Triller T. , Hammon A. , Bauer C. , Köhler W. , Shevtsova V.
Published: September 2015

All diagonal and off-diagonal Fickian diffusion coefficients in the ternary liquid mixture water–ethanol–triethylenglycol and its binary subsystems have been measured. The figure shows the main diffusion coefficient D11 over the composition space.
Low-temperature and low-pressure non-oxidative activation of methane for upgrading heavy oil
Authors: Guo Aijun , Wu Chongchong , He Peng , Luan Yingqi , Zhao Lulu , Shan Wenpo , Cheng Wei , Song Hua
Published: September 2015

This study creates a novel catalytic route for low-temperature and low-pressure non-oxidative utilization of methane and opens a door for upgrading heavy oil with natural gas under fairly mild operation conditions instead of expensive hydrogen under rather stringent ones.
A smart catalyst system for the valorization of renewable furfural in aliphatic alcohols
Authors: Liu Zonghui , Tong Xinli , Liu Jinbiao , Xue Song
Published: September 2015

A highly efficient and selective oxidative condensation–hydrogenation process of renewable furfural with aliphatic alcohols mediated by supported Pt catalysts in a one-pot reactor is developed.
A green and sustainable phosphine-free NHC-ruthenium catalyst for selective oxidation of alcohols to carboxylic acids in water
Authors: Malineni Jagadeesh , Keul Helmut , Möller Martin
Published: September 2015

An efficient novel protocol is applied for direct synthesis of carboxylic acids from primary alcohols through catalytic dehydrogenation. This reaction occurs in water as the solvent and as the oxygen-atom source and no toxic oxidizing agent is involved.
Effect of Cu substitution on structures and electrochemical properties of Li[NiCo1−xCuxMn]1/3O2 as cathode materials for lithium ion batteries
Authors: Wu Zhao-Jin , Wang Dong , Gao Zhi-Fang , Yue Hai-Feng , Liu Wei-Ming
Published: September 2015

This study on Cu-doped Li[NiCoMn]1/3O2 provides support for reusing Cu as a beneficial dopant in the production of metal-doped Li[NiCoMn]1/3O2 from spent LIBs.
Copper(ii) tetrafluoroborate complexes with the N3,N4-bridging coordination of 1-(tert-butyl)-1H-tetrazole: synthesis, crystal structure and magnetic properties
Authors: Degtyarik Mikhail M. , Lyakhov Alexander S. , Ivashkevich Ludmila S. , Matulis Vitaly E. , Matulis Vadim E. , Gruschinski Sina , Voitekhovich Sergei V. , Kersting Berthold , Ivashkevich Oleg A.
Published: September 2015

A rare coordination mode of 1-alkyltetrazole was observed.
Slow magnetic relaxation of light lanthanide-based linear LnZn2 trinuclear complexes
Authors: Takehara Chika , Then Poh Ling , Kataoka Yumiko , Nakano Motohiro , Yamamura Tomoo , Kajiwara Takashi
Published: September 2015

Four isostructural Zn(ii)–Ln(iii)–Zn(ii) trinuclear complexes were synthesized using light lanthanide ions as magnetic centers, of which Ce(iii) and Nd(iii) complexes behaved as single-molecule magnets.
Separation and characterization of polyphenolics from underutilized byproducts of fruit production (Choerospondias axillaris peels): inhibitory activity of proanthocyanidins against glycolysis enzymes
Authors: Li Qian , Chen Jun , Li Ti , Liu Chengmei , Zhai Yuxin , McClements David Julian , Liu Jiyan
Published: September 2015

Bioactive proanthocyanidins were isolated from the peel ofChoerospondias axillarisfruit, which is a waste product of the food processing industry.
Pneumatically-actuated artificial cilia array for biomimetic fluid propulsion
Authors: Gorissen Benjamin , de Volder Michaël , Reynaerts Dominiek
Published: September 2015

A novel approach to induce fluid flow using a cilia array with individually controlled pneumatic cilia, imposing metachronal waves.
Self-assembled magnetic bead chains for sensitivity enhancement of microfluidic electrochemical biosensor platforms
Authors: Armbrecht L. , Dincer C. , Kling A. , Horak J. , Kieninger J. , Urban G.
Published: September 2015

We present a new approach to increase the sensitivity of magnetic bead-based microfluidic biosensor platforms with laminated low-cost soft-magnetic lattices.
Polar Diels–Alder reaction of isoprene toward 2-bromocyclobutenone followed by a subsequent sodium hydroxide-assisted ring contraction reaction. A regio- and stereoselectivity and molecular mechanism study using DFT
Authors: Emamian Saeedreza
Published: September 2015

The polar Diels–Alder reaction of isoprene toward 2-bromocyclobutenone followed by a stepwise Favorskii ring contraction reaction generates carane as the final product.
SO3H-functionalized mesoporous silica materials as solid acid catalyst for facile and solvent-free synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11-trione derivatives
Authors: Alinasab Amiri Ali , Javanshir Shahrzad , Dolatkhah Zahra , Dekamin Mohammad G.
Published: September 2015

SO3H-functionalized mesoporous silica materials were used to synthesize 2H-indazolo[2,1-b]phthalazine-1,6,11-trione derivatives in a one-pot three-component condensation reaction.
Synergistic actions between tebuconazole ligand and Cu(ii) cation: reasons for the enhanced antifungal activity of four Cu(ii) complexes based on the fungicide tebuconazole
Authors: Li Jie , Xi Teng , Yan Biao , Guan Yulei , Yang Mingyan , Song Jirong , Ma Haixia
Published: September 2015

The enhanced antifungal activity of four synthesized complexes is due to the synergistic actions of tebuconazole ligand and Cu(ii) cation.
Ultralight anisotropic foams from layered aligned carbon nanotube sheets
Authors: Faraji Shaghayegh , L. Stano Kelly , Yildiz Ozkan , Li Ang , Zhu Yuntian , Bradford Philip D.
Published: September 2015

A novel nanofabrication method is demonstrated to produce large size, elastically resilient, ultra-low density carbon nanotube foams (3.8 mg cm−3) with anisotropic and tunable properties. Potential applications of this unique material are explored.
Hydrophobic pocket targeting probes for enteroviruses
Authors: Martikainen Mari , Salorinne Kirsi , Lahtinen Tanja , Malola Sami , Permi Perttu , Häkkinen Hannu , Marjomäki Varpu
Published: September 2015

Hydrophobic pocket probes label enteroviruses for microscopy and biochemical studies, and facilitate dynamic studies to evaluate virus uncoating and infectivity.
Preparation, optical and electrical properties of PTCDA nanostructures
Authors: Han Yuyan , Ning Wei , Du Haifeng , Yang Jiyong , Wang Ning , Cao Liang , Li Feng , Zhang Fapei , Xu Faqiang , Tian Mingliang
Published: September 2015

The induced nucleation effect arouses the formations of nanorods, nanowires and nanoparticles. The high crystallinity of the nanowires and the strong π–π conjugation between PTCDA molecules induce the conductivity improvement.
Spin Seebeck effect and spin Hall magnetoresistance at high temperatures for a Pt/yttrium iron garnet hybrid structure
Authors: Wang Shuanhu , Zou Lvkuan , Zhang Xu , Cai Jianwang , Wang Shufang , Shen Baogen , Sun Jirong
Published: September 2015

Based on unique experimental setups, the temperature dependences of the longitudinal spin Seebeck effect (LSSE) and spin Hall magnetoresistance (SMR) of the Pt/yttrium iron garnet (Pt/YIG) hybrid structure are determined in a wide temperature range up to the Curie temperature of YIG.
Characterization of structural elements in native autoinducing peptides and non-native analogues that permit the differential modulation of AgrC-type quorum sensing receptors in Staphylococcus aureus
Authors: Tal-Gan Yftah , Ivancic Monika , Cornilescu Gabriel , Blackwell Helen E.
Published: September 2015

Structural analyses of autoinducing peptides and analogues thereof reveal motifs critical for modulation of quorum sensing receptors inS. aureus.
Synthesis of virtually enantiopure aminodiols with three adjacent stereogenic centers by epoxidation and ring-opening
Authors: Luo Lan , Yamamoto Hisashi
Published: September 2015

Synthesis of virtually enantiopure aminodiols with three consecutive stereocenters is accomplished by a sequential cascade of epoxidation and ring-opening.
Application of Mannich bases to the synthesis of hydroxymethylated isoflavonoids as potential antineoplastic agents
Authors: Frasinyuk Mykhaylo S. , Mrug Galyna P. , Bondarenko Svitlana P. , Sviripa Vitaliy M. , Zhang Wen , Cai Xianfeng , Fiandalo Michael V. , Mohler James L. , Liu Chunming , Watt David S.
Published: September 2015

C-6 and C-8 Hydroxy-, acetoxy- and alkoxymethyl derivatives of isoflavones were synthesized from Mannich bases and show inhibition in the low micromolar range in a prostate cancer PC3 cell line.
Correction: A new blue-shifted luciferase from the Brazilian Amydetes fanestratus (Coleoptera: Lampyridae) firefly: molecular evolution and structural/functional properties
Authors: Viviani Vadim R. , Amaral Danilo , Prado Rogilene , Arnoldi Frederico G. C.
Published: September 2015

Correction for ‘A new blue-shifted luciferase from the Brazilian Amydetes fanestratus (Coleoptera: Lampyridae) firefly: molecular evolution and structural/functional properties’ by Vadim R. Viviani et al., Photochem. Photobiol. Sci., 2011, 10, 1879–1886.
Oxygen activation by copper camphor complexes
Authors: Roseiro Alexandra P. S. , Adão Pedro , Galvão Adelino M. , Costa Pessoa João , Botelho do Rego Ana M. , Carvalho M. Fernanda N. N.
Published: September 2015

In situreduction of CuCl2enables formation of Cu(i) complexes prone to activate molecular oxygen from air towards catalytic oxidation of 1,3-dicarbonyls.
Highly efficient and eco-friendly synthesis of tertiary amines by reductive alkylation of aldehydes with secondary amines over a Pt nanowires catalyst
Authors: Wu Junjie , Lu Shuanglong , Ge Danhua , Gu Hongwei
Published: September 2015

A highly efficient and environmentally friendly method for the synthesis of tertiary amines by direct interaction of aldehydes with secondary amines was reported over a Pt NWs catalyst under mild reaction conditions.
Magnetic properties in a IIIA-nitride monolayer doped with Cu: a density functional theory investigation
Authors: Meng Bo , Xiao Wen-Zhi , Wang Ling-Ling , Yue Li , Zhang Song , Zhang Hong-yun
Published: September 2015

By using external strain, the magnetic ground state can be deliberately tuned, which would be propitious to their advanced applications.
The structural and electronic properties of Cu(In1−xBx)Se2as a new photovoltaic material
Authors: Cheng Yulan , Wei Kexiang , Xia Ping , Bai Quan
Published: September 2015

The newly synthesized solar cell absorber material Cu(In1−xBx)Se2based on a solvothermal method with a special solvent is investigated using density functional theory.
Study on reversible hydrogen sorption behaviors of 3LiBH4/graphene and 3LiBH4/graphene–10 wt% CeF3composites
Authors: Zhu Yingying , Zou Jianxin , Zeng Xiaoqin
Published: September 2015

In the present work, two LiBH4based hydrogen storage composites, namely, 3LiBH4/graphene and 3LiBH4/graphene–10 wt% CeF3, were prepared through ball milling and their hydrogen sorption behaviors were investigated.
Hierarchical LiMnPO4 assembled from nanosheets via a solvothermal method as a high performance cathode material
Authors: Zhang Zhijian , Hu Guorong , Cao Yanbing , Duan Jianguo , Du Ke , Peng Zhongdong
Published: September 2015

The hierarchical LiMnPO4/C with (010) exposed was prepared to provide superior Li+ migration and electron transfer via urea assisted solvothermal method. The as-prepared material showed excellent high rate and long cycle performance.
Surface ionic states and structure of titanate nanotubes
Authors: Vempati Sesha , Kayaci-Senirmak Fatma , Ozgit-Akgun Cagla , Biyikli Necmi , Uyar Tamer
Published: September 2015

Valance band structure of Zn–Ti–O ternary nanostructures, core level ionic states of Zn, Ti, O and the role of chemisorbed oxygen.
Comparative study on sandwich-structured SiO2@Ag@SnO2 and inverse SiO2@SnO2@Ag: key roles of shell ordering and interfacial contact in modulating the photocatalytic properties
Authors: Sun Menglin , Zhao Qihang , Liu Xiaoyan , Du Chunfang , Liu Zhiliang
Published: September 2015

Sandwich-structured SiO2@Ag@SnO2 and inverse SiO2@SnO2@Ag using SiO2 spheres as cores have been systematically synthesized through hydrothermal treatment.
Correction: Effect of different calcium salts and methods for triggerisng gelation on the characteristics of microencapsulated Lactobacillus plantarum LIP-1
Authors: Tian Wenjing , Song Jiaojiao , Wang Yali , Yue Linfang , Wang Junguo , Dan Tong , Menghe Bilige , Zhang Heping
Published: September 2015

Correction for ‘Effect of different calcium salts and methods for triggering gelation on the characteristics of microencapsulated Lactobacillus plantarum LIP-1’ by Wenjing Tian et al., RSC Adv., 2015, 5, 73352–73362.
Molecular-scale features that govern the effects of O-glycosylation on a carbohydrate-binding module
Authors: Guan Xiaoyang , Chaffey Patrick K. , Zeng Chen , Greene Eric R. , Chen Liqun , Drake Matthew R. , Chen Claire , Groobman Ari , Resch Michael G. , Himmel Michael E. , Beckham Gregg T. , Tan Zhongping
Published: September 2015

The importance of the glycan structure and size, amino acid residues near the glycosylation site, and glycosidic linkage in controlling the effects of CBMO-glycosylation is shown.
Seed-mediated growth of MOF-encapsulated Pd@Ag core–shell nanoparticles: toward advanced room temperature nanocatalysts
Authors: Chen Liyu , Huang Binbin , Qiu Xuan , Wang Xi , Luque Rafael , Li Yingwei
Published: September 2015

Core–shell Pd@Ag nanoparticles are formed within the pores of MOFs via a seed mediated growth strategy with activated hydrogen atoms as the reducing agent, leading to a family of bimetallic core–shell MOF nanomaterials with excelling catalytic performance in room temperature reactions.
Cascade reactions of nitrogen-substituted isocyanates: a new tool in heterocyclic chemistry
Authors: Vincent-Rocan Jean-François , Ivanovich Ryan A. , Clavette Christian , Leckett Kyle , Bejjani Julien , Beauchemin André M.
Published: September 2015

Rare and amphoteric intermediates,in situgeneration: controlled reactivity in diverse cascade reactions, over 100 examples.
Short-time dynamics in dispersions with competing short-range attraction and long-range repulsion
Authors: Riest Jonas , Nägele Gerhard
Published: September 2015

Unusual dynamic features in dispersions with competing short-range attraction and long-range repulsion.
Impact of alkoxy chain length on carbazole-based, visible light-driven, dye sensitized photocatalytic hydrogen production
Authors: Watanabe Motonori , Hagiwara Hidehisa , Ogata Yudai , Staykov Aleksandar , Bishop Sean R. , Perry Nicola H. , Chang Yuan Jay , Ida Shintaro , Tanaka Keiji , Ishihara Tatsumi
Published: September 2015

Alkoxyphenyl-substituted carbazole-based metal-free organic dyes were synthesized and effectively used for dye-sensitized, visible-light-driven, photocatalytic hydrogen production.
Poly-functional porous-organic polymers to access functionality – CO2 sorption energetic relationships
Authors: Alkordi Mohamed H. , Haikal Rana R. , Hassan Youssef S. , Emwas Abdul-Hamid , Belmabkhout Youssef
Published: September 2015

Poly-functional porous organic polymers are constructed to probe the effect of chemical functionality on the observed Qst for CO2.
Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells
Authors: Min Jie , Luponosov Yuriy N. , Gasparini Nicola , Xue Lingwei , Drozdov Fedor V. , Peregudova Svetlana M. , Dmitryakov Petr V. , Gerasimov Kirill L. , Anokhin Denis V. , Zhang Zhi-Guo , Ameri Tayebeh , Chvalun Sergei N. , Ivanov Dimitri A. , Li Yongfang , Ponomarenko Sergei A. , Brabec Christoph J.
Published: September 2015

High-performance small molecule OSCs with PCEs up to 6.4% are demonstrated.
Correction: Air-processed inverted organic solar cells utilizing a 2-aminoethanol-stabilized ZnO nanoparticle electron transport layer that requires no thermal annealing
Authors: Jeon Il , Ryan James W. , Nakazaki Tafu , Yeo Kee Sheng , Negishi Yuichi , Matsuo Yutaka
Published: September 2015

Correction for ‘Air-processed inverted organic solar cells utilizing a 2-aminoethanol-stabilized ZnO nanoparticle electron transport layer that requires no thermal annealing’ by Il Jeon et al., J. Mater. Chem. A, 2014, 2, 18754–18760.
Degradable/cytocompatible and pH responsive amphiphilic conetwork gels based on agarose-graft copolymers and polycaprolactone
Authors: Bera Anupam , Singh Chandel Arvind K. , Uday Kumar Chinta , Jewrajka Suresh K.
Published: September 2015

Amphiphilic conetwork gels based on graft copolymers of agarose and polycaprolactone exhibited desirable cytocompatibility/blood compatibility and pH responsive release of hydrophilic and hydrophobic drugs, and may be suitable for biomedical applications.
Self-powered flexible pressure sensors with vertically well-aligned piezoelectric nanowire arrays for monitoring vital signs
Authors: Chen Xiaoliang , Shao Jinyou , An Ningli , Li Xiangming , Tian Hongmiao , Xu Chuan , Ding Yucheng
Published: September 2015

We propose an in situ poling of vertically well-aligned piezoelectric nanowire arrays with preferential polarization orientation as highly sensitive self-powered sensors for monitoring vital signs.
In situ X-ray diffraction study of the controlled oxidation and reduction in the V–O system for the synthesis of VO2 and V2O3 thin films
Authors: Rampelberg Geert , De Schutter Bob , Devulder Wouter , Martens Koen , Radu Iuliana , Detavernier Christophe
Published: September 2015

VO2 and V2O3 thin films were prepared during in situ XRD investigation by oxidation and reduction of V and V2O5. Films show up to 5 orders of magnitude resistance switching.
A new twist on cholesteric films by using reactive mesogen particles
Authors: Beltran-Gracia E. , Parri O. L.
Published: September 2015

A novel approach to producing cholesteric mono- or multi-wavelength reflective systems which drive the reflection by mixing isolated Bragg-reflectors is presented.
Transactivation of P53 by cypermethrin induced miR-200 and apoptosis in neuronal cells
Authors: Pandey Ankita , Jauhari Abhishek , Singh Tanisha , Singh Parul , Singh Nishant , Srivastava Ankur Kumar , Khan Farah , Pant Aditya Bhushan , Parmar Devendra , Yadav Sanjay
Published: September 2015

Cypermethrin, a pyrethroid pesticide, has been shown to induce neurotoxicity in adult mammals. However, studies are also needed to explore its toxicity in developing brains and understand its mechanism of action in neurons.
QoS fairness‐based slot allocation using backlog info in satellite‐based sensor systems
Authors: Han Han , Lin Yuan , Dong Feihong , Wang Jingchao
Published: September 2015

A QoS (quality of service) fairness‐based slot allocation algorithm is proposed for sink stations in satellite‐based sensor systems, which considers the statistical traffic rate and the instantaneous backlog info. Different from the traditional throughput fairness, the considered QoS fairness focuses on the long‐term fairness, not the short‐term fairness. The delay performance is taken as an example of QoS. With the help of stochastic gradient theory, a unique QoS‐aware factor is deduced and used to direct the reallocation of the residual slots after basic allocation. Numerical simulations show that the proposed allocation could improve the long‐term fairness in a large ratio, compared with the allocation for short‐term fairness.
Calibration‐spur reduction in current‐steering DAC utilising digital‐and‐analogue hybrid return‐to‐zero (HRZ) method
Authors: Kim W.‐C. , Kim J.‐G. , Ahn K.‐H. , Kim G.‐J. , Park S.‐H. , Ryu S.‐T.
Published: September 2015

A simple‐but‐efficient calibration‐spur reduction technique is introduced that utilises the digital‐and‐analogue hybrid return‐to‐zero (HRZ) method in a current‐steering DAC employing a round‐robin‐fashioned background current‐source calibration scheme. A simulation with a 12 b 500 MS/s current‐steering DAC showed 9.9 and 7.8 dB improvements in the spur‐free dynamic range and signal‐to‐noise + distortion ratio, respectively, owing to the reduced calibration spur by the proposed HRZ technique.
Maintaining two decades of power amplifier bandwidth
Authors: Setzer C. , Cochran D.
Published: September 2015

Although several companies are selling MMIC distributed amplifiers with indications of two or more decades of usable bandwidth, the data has been difficult to implement in a practical amplifier design. Suppliers generally make coupling C's and bias tee's an external part of the MMIC measurement system and their losses are often removed (de‐embedded) from the published data. Application engineers for even the largest vendors often seem to be unaware of how to practically achieve the bandwidth properties inherent to their devices, which requires simultaneous optimisation of both the high‐ and the low‐frequency response. In this reported work using the axiomatic design approach allows systematically eliminating bandwidth bottlenecks and obtaining greater than two decades of bandwidth in a high‐power module. The provided example uses an internally matched GaN distributed MMIC, but the same techniques are useful in many other configurations.
Optimal road side units placement model based on binary integer programming for efficient traffic information advertisement and discovery in vehicular environment
Authors: Balouchzahi Nik Mohammad , Fathy Mahmood , Akbari Ahmad
Published: September 2015

Road side units (RSUs) are considered to be one of the most important components in vehicular networks to send and receive data from other components inside the networks. Regarding the fact that vehicular network performance and vehicular environment coverage are highly related, the maximum coverage via RSUs improves the efficiency of vehicular networks. However, because of high costs of RSU placement, it would be impossible to have full coverage through RSUs. Hence, it would be necessary to optimally install a limited number of RSUs in the most appropriate locations. In this article, the problem of RSU placement is formulated to binary integer programming. The objective of the present study is to find locations which have higher impacts on efficiency of vehicular networks. The objective function is minimising the costs of RSU placement. Moreover, coverage of the most important locations by RSUs has been applied in the form of optimization constraints. The performance of the given mechanism has been assessed by real traces. Simulation results indicate that the method is able to find optimal locations of RSUs in highway and urban environments. Furthermore, the results show that by optimal RSU placement inside the environment, the performance of vehicular network is improved.