bluuebunny/crossref_metadata_2025 huggingface dataset:
Visualizing the non-equilibrium dynamics of photoinduced intramolecular electron transfer with femtosecond X-ray pulses
Authors: Canton Sophie E. , Kjær Kasper S. , Vankó György , van Driel Tim B. , Adachi Shin-ichi , Bordage Amélie , Bressler Christian , Chabera Pavel , Christensen Morten , Dohn Asmus O. , Galler Andreas , Gawelda Wojciech , Gosztola David , Haldrup Kristoffer , Harlang Tobias , Liu Yizhu , Møller Klaus B. , Németh Zoltán , Nozawa Shunsuke , Pápai Mátyás , Sato Tokushi , Sato Takahiro , Suarez-Alcantara Karina , Togashi Tadashi , Tono Kensuke , Uhlig Jens , Vithanage Dimali A. , Wärnmark Kenneth , Yabashi Makina , Zhang Jianxin , Sundström Villy , Nielsen Martin M.
Published: March 2015

Ultrafast photoinduced electron transfer preceding energy equilibration still poses many experimental and conceptual challenges to the optimization of photoconversion since an atomic-scale description has so far been beyond reach. Here we combine femtosecond transient optical absorption spectroscopy with ultrafast X-ray emission spectroscopy and diffuse X-ray scattering at the SACLA facility to track the non-equilibrated electronic and structural dynamics within a bimetallic donor–acceptor complex that contains an optically dark centre. Exploiting the 100-fold increase in temporal resolution as compared with storage ring facilities, these measurements constitute the first X-ray-based visualization of a non-equilibrated intramolecular electron transfer process over large interatomic distances. Experimental and theoretical results establish that mediation through electronically excited molecular states is a key mechanistic feature. The present study demonstrates the extensive potential of femtosecond X-ray techniques as diagnostics of non-adiabatic electron transfer processes in synthetic and biological systems, and some directions for future studies, are outlined.
Dynamic association of PfEMP1 and KAHRP in knobs mediates cytoadherence during Plasmodium invasion
Authors: Ganguly Akshay Kumar , Ranjan Priyatosh , Kumar Ashutosh , Bhavesh Neel Sarovar
Published: March 2015

Plasmodium falciparum infected erythrocytes display membrane knobs that are essential for their adherence to vascular endothelia and for prevention of clearance by the spleen. The knob associated histidine rich protein (KAHRP) is indispensable to knob formation and has been implicated in the recruitment and tethering of P. falciparum erythrocyte membrane protein–1 (PfEMP1) by binding to its cytoplasmic domain termed VARC. However, the precise mechanism of interaction between KAHRP and VARC is not very well understood. Here we report that both the proteins co-localize to membrane knobs of P. falciparum infected erythrocytes and have identified four positively charged linear sequence motifs of high intrinsic mobility on KAHRP that interact electrostatically with VARC in solution to form a fuzzy complex. The current study provides molecular insight into interaction between KAHRP and VARC in solution that takes place at membrane knobs.
Determining Chemically and Spatially Resolved Atomic Profile of Low Contrast Interface Structure with High Resolution
Authors: Nayak Maheswar , Pradhan P. C. , Lodha G. S. , Sokolov A. , Schäfers F.
Published: March 2015

We present precise measurements of atomic distributions of low electron density contrast at a buried interface using soft x-ray resonant scattering. This approach allows one to construct chemically and spatially highly resolved atomic distribution profile upto several tens of nanometer in a non-destructive and quantitative manner. We demonstrate that the method is sensitive enough to resolve compositional differences of few atomic percent in nano-scaled layered structures of elements with poor electron density differences (0.05%). The present study near the edge of potential impurities in soft x-ray range for low-Z system will stimulate the activity in that field.
Differential Effects of AAV.BDNF and AAV.Ntf3 in the Deafened Adult Guinea Pig Ear
Authors: Budenz Cameron L. , Wong Hiu Tung , Swiderski Donald L. , Shibata Seiji B. , Pfingst Bryan E. , Raphael Yehoash
Published: March 2015

Cochlear hair cell loss results in secondary regression of peripheral auditory fibers (PAFs) and loss of spiral ganglion neurons (SGNs). The performance of cochlear implants (CI) in rehabilitating hearing depends on survival of SGNs. Here we compare the effects of adeno-associated virus vectors with neurotrophin gene inserts, AAV.BDNF and AAV.Ntf3, on guinea pig ears deafened systemically (kanamycin and furosemide) or locally (neomycin). AAV.BDNF or AAV.Ntf3 was delivered to the guinea pig cochlea one week following deafening and ears were assessed morphologically 3 months later. At that time, neurotrophins levels were not significantly elevated in the cochlear fluids, even though in vitro and shorter term in vivo experiments demonstrate robust elevation of neurotrophins with these viral vectors. Nevertheless, animals receiving these vectors exhibited considerable re-growth of PAFs in the basilar membrane area. In systemically deafened animals there was a negative correlation between the presence of differentiated supporting cells and PAFs, suggesting that supporting cells influence the outcome of neurotrophin over-expression aimed at enhancing the cochlear neural substrate. Counts of SGN in Rosenthal's canal indicate that BDNF was more effective than NT-3 in preserving SGNs. The results demonstrate that a transient elevation in neurotrophin levels can sustain the cochlear neural substrate in the long term.
Sequential Cobalt Magnetization Collapse in ErCo2: Beyond the Limits of Itinerant Electron Metamagnetism
Authors: Kozlenko D. P. , Burzo E. , Vlaic P. , Kichanov S. E. , Rutkauskas A. V. , Savenko B. N.
Published: March 2015

The itinerant electron metamagnetism (IEM) is an essential physical concept, describing magnetic properties of rare earth – transition metal (R-TM) intermetallics, demonstrating technologically important giant magnetoresistance and magnetocaloric effects. It considers an appearance of TM magnetization induced by spontaneous magnetization of surrounding R atoms, which provides significant response of the magnetic and transport properties on variation of external parameters (temperature, pressure, magnetic field) due to strong coupling between magnetic sublattices. The RCo2 compounds were generally considered as model systems for understanding of basic properties of IEM intermetallics. However, microscopic nature of magnetic properties still remains unclear. In our experimental and theoretical study of ErCo2 in a wide range of thermodynamic parameters a sequential collapse of cobalt sublattice magnetization in the background of nearly unchanged Er sublattice magnetization was revealed. The uncoupled magnetizations behavior challenges the IEM concept applicability and evidences more complex nature of magnetism in ErCo2 and related RCo2 systems.
Biodegradable Hydrophilic Polyurethane PEGU25 Loading Antimicrobial Peptide Bmap-28: A Sustained-release Membrane Able to Inhibit Bacterial Biofilm Formation in Vitro
Authors: Wang Jianzhong , Liu Qinyu , Tian Ye , Jian Zhongyu , Li Hong , Wang Kunjie
Published: March 2015

Catheter-related infection makes up a large part of hospital infection and contributes 80% to all nosocomial urological infection, costing hundreds of millions dollar per year for treatment. Biodegradable hydrophilic material incorporating antibiotic substance is a promising way to prevent catheter-related infection. And antimicrobial peptide seems an optimal drug for its desirable antibiotic effect. In the current research, we produced a new kind of antibiotic material by incorporating antimicrobial peptide Bmap-28 with polyurethane PEGU25 and tested its effect on Proteus mirabilis in vitro. Compared with the control group, PEGU25 membrane incorporating Bmap-28 had a significant lower bacteria load after co-cultured with the Proteus mirabilis. And its antibiotic effect could be observed throughout the whole 7-day test. Also the Bmap-28 membrane could delay catheter obstruction caused by encrustation. Our findings reveal that PEGU25 incorporating Bmap-28 can well inhibit bacterial biofilm formation of common pathogens for catheter-related urinary tract infection in vitro, which makes it a promising antibiotic material for medical tubes for urology.
Functionalised MnVI-nanoparticles: an advanced high-valent magnetic catalyst
Authors: Khamarui Saikat , Saima Yasmin , Laha Radha M. , Ghosh Subhadeep , Maiti Dilip K.
Published: March 2015

We discover MnVI-nanoparticles (NPs) bearing functional groups, high oxidation state, strong electron affinity, unique redox and paramagnetic nature, which opens up a new avenue to catalysis, magnetism and material application. However, its synthesis is challenging and remains unexplored because of associated serious difficulties. A simple benign synthetic strategy is devised to fabricate the high-valent NPs using mild reducing agent bromide, which transformed MnVII to valuable MnVI-species. The EELS-imaging of individual elements, ESI-MS, XPS and other techniques established its composition as Br(Me3SiO)MnVIO2. It revealed significantly improved magnetic moment (SQUID) with isotropic hyperfine splitting of six line spectrum (EPR). The high-oxidation state and incorporated-ligands of the metals present on the active surface of the NPs led to development of a general catalytic process for oxidative heterodifunctionalisation to C-C triple bond towards formation of a new O-C/N-C/S-C and C-C coupling cum cyclisation to biologically important flavones and their aza- and marcapto-analogues and valuable enaloxy synthons.
Electrolytic reduction of liquid metal oxides and its application to reconfigurable structured devices
Authors: Wang Jinqi , Appusamy Kanagasundar , Guruswamy Sivaraman , Nahata Ajay
Published: March 2015

Structured metallic patterns are routinely used for a wide variety of applications, ranging from electronic circuits to plasmonics and metamaterials. Numerous techniques have been developed for the fabrication of these devices, in which the metal patterns are typically formed using conventional metals. While this approach has proven very successful, it does generally limit the ability to reconfigure the geometry of the overall device. Here, we demonstrate the ability to create artificially structured metallic devices using liquid metals, in which the configuration can be altered via the electrolysis of saline solutions or deionized water. We accomplish this using an elastomeric mold with two different sets of embedded microfluidic channels that are patterned and injected with EGaIn and water, respectively. The electrochemical reaction is then used to etch the thin oxide layer that forms on eutectic gallium indium (EGaIn) in a controlled reproducible manner. Once the oxide layer is dissolved locally, the underlying liquid metal retracts away from the original position to a position where a new stable oxide layer can reform, which is equivalent to erasing a section of the liquid metal. To allow for full reconfigurability, the entire device can be reset by refilling all of the microchannels with EGaIn.
Both piston-like and rotational motions are present in bacterial chemoreceptor signaling
Authors: Yu Daqi , Ma Xiaomin , Tu Yuhai , Lai Luhua
Published: March 2015

Bacterial chemotaxis signaling is triggered by binding of chemo-effectors to the membrane-bound chemoreceptor dimers. Though much is known about the structure of the chemoreceptors, details of the receptor dynamics and their effects on signaling are still unclear. Here, by using molecular dynamics simulations and principle component analysis, we study the dynamics of the periplasmic domain of aspartate chemoreceptor Tar dimer and its conformational changes when binding to different ligands (attractant, antagonist and two attractant molecules). We found two dominant components (modes) in the receptor dynamics: a relative rotation of the two Tar monomers and a piston-like up-and-down sliding movement of the α4 helix. These two modes are highly correlated. Binding of one attractant molecule to the Tar dimer induced both significant piston-like downward movements of the α4 helix and strong relative rotations of the two Tar monomers, while binding of an antagonist or the symmetric binding of two attractant molecules to a Tar dimer suppresses both modes. The anti-symmetric effects of the relative rotation mode also explained the negative cooperativity between the two binding pockets. Our results suggest a mechanism of coupled rotation and piston-like motion for bacterial chemoreceptor signaling.
Engineering the Phase Front of Light with Phase-Change Material Based Planar lenses
Authors: Chen Yiguo , Li Xiong , Sonnefraud Yannick , Fernández-Domínguez Antonio I. , Luo Xiangang , Hong Minghui , Maier Stefan A.
Published: March 2015

A novel hybrid planar lens is proposed to engineer the far-field focusing patterns. It consists of an array of slits which are filled with phase-change material Ge2Sb2Te5 (GST). By varying the crystallization level of GST from 0% to 90%, the Fabry-Pérot resonance supported inside each slit can be spectrally shifted across the working wavelength at 1.55 µm, which results in a transmitted electromagnetic phase modulation as large as 0.56π. Based on this geometrically fixed platform, different phase fronts can be constructed spatially on the lens plane by assigning the designed GST crystallization levels to the corresponding slits, achieving various far-field focusing patterns. The present work offers a promising route to realize tunable nanophotonic components, which can be used in optical circuits and imaging applications.
GSK3 inhibitors CHIR99021 and 6-bromoindirubin-3′-oxime inhibit microRNA maturation in mouse embryonic stem cells
Authors: Wu Yongyan , Liu Fayang , Liu Yingying , Liu Xiaolei , Ai Zhiying , Guo Zekun , Zhang Yong
Published: March 2015

Wnt/β-catenin signalling plays a prominent role in maintaining self-renewal and pluripotency of mouse embryonic stem cells (mESCs). microRNAs (miRNAs) have critical roles in maintaining pluripotency and directing reprogramming. To investigate the effect of GSK3 inhibitors on miRNA expression, we analysed the miRNA expression profile of J1 mESCs in the absence or presence of CHIR99021 (CHIR) or 6-bromoindirubin-3′-oxime (BIO) by small RNA deep-sequencing. The results demonstrate that CHIR and BIO decrease mature miRNAs of most miRNA species, 90.4% and 98.1% of the differentially expressed miRNAs in BIO and CHIR treated cells were downregulated respectively. CHIR and BIO treatment leads to a slight upregulation of the primary transcripts of the miR-302–367 cluster and miR-181 family of miRNAs, these miRNAs are activated by Wnt/β-catenin signalling. However, the precursor and mature form of the miR-302–367 cluster and miR-181 family of miRNAs are downregulated by CHIR, suggesting CHIR inhibits maturation of primary miRNA. Western blot analysis shows that BIO and CHIR treatment leads to a reduction of the RNase III enzyme Drosha in the nucleus. These data suggest that BIO and CHIR inhibit miRNA maturation by disturbing nuclear localisation of Drosha. Results also show that BIO and CHIR induce miR-211 expression in J1 mESCs.
Detection of Mycobacterium tuberculosis DNA on the oral mucosa of tuberculosis patients
Authors: Wood Rachel C. , Luabeya Angelique K. , Weigel Kris M. , Wilbur Alicia K. , Jones-Engel Lisa , Hatherill Mark , Cangelosi Gerard A.
Published: March 2015

Diagnosis of pulmonary tuberculosis (TB) usually includes laboratory analysis of sputum, a viscous material derived from deep in the airways of patients with active disease. As a diagnostic sample matrix, sputum can be difficult to collect and analyze by microbiological and molecular techniques. An alternative, less invasive sample matrix could greatly simplify TB diagnosis. We hypothesized that Mycobacterium tuberculosis cells or DNA accumulate on the oral epithelia of pulmonary TB patients and can be collected and detected by using oral (buccal) swabs. To test this hypothesis, 3 swabs each were collected from 20 subjects with active pulmonary TB and from 20 healthy controls. Samples were tested by using a polymerase chain reaction (PCR) specific to the M. tuberculosis IS6110 insertion element. Eighteen out of 20 confirmed case subjects (90%) yielded at least 2 positive swabs. Healthy control samples were 100% negative. This case-control study supports past reports of M. tuberculosis DNA detection in oral swabs. Oral swab samples are non-invasive, non-viscous and easy to collect with or without active TB symptoms. These characteristics may enable simpler and more active TB case finding strategies.
Ultrasmall Glutathione-Protected Gold Nanoclusters as Next Generation Radiotherapy Sensitizers with High Tumor Uptake and High Renal Clearance
Authors: Zhang Xiao-Dong , Luo Zhentao , Chen Jie , Song Shasha , Yuan Xun , Shen Xiu , Wang Hao , Sun Yuanming , Gao Kai , Zhang Lianfeng , Fan Saijun , Leong David Tai , Guo Meili , Xie Jianping
Published: March 2015

Radiotherapy is often the most straightforward first line cancer treatment for solid tumors. While it is highly effective against tumors, there is also collateral damage to healthy proximal tissues especially with high doses. The use of radiosensitizers is an effective way to boost the killing efficacy of radiotherapy against the tumor while drastically limiting the received dose and reducing the possible damage to normal tissues. Here, we report the design and application of a good radiosensitizer by using ultrasmall Au29–43(SG)27–37 nanoclusters (<2 nm) with a naturally-occurring peptide (e.g., glutathione or GSH) as the protecting shell. The GSH-coated Au29–43(SG)27–37 nanoclusters can escape the RES absorption, leading to a good tumor uptake (~8.1% ID/g at 24 h post injection). As a result, the as-designed Au nanoclusters led to a strong enhancement for radiotherapy, as well as a negligible damage to normal tissues. After the treatment, the ultrasmall Au29–43(SG)27–37 nanoclusters can be efficiently cleared by the kidney, thereby avoiding potential long-term side-effects caused by the accumulation of gold atoms in the body. Our data suggest that the ultrasmall peptide-protected Au nanoclusters are a promising radiosensitizer for cancer radiotherapy.
Acceleration of genetic gain in cattle by reduction of generation interval
Authors: Kasinathan Poothappillai , Wei Hong , Xiang Tianhao , Molina Jose A. , Metzger John , Broek Diane , Kasinathan Sivakanthan , Faber David C. , Allan Mark F.
Published: March 2015

Genomic selection (GS) approaches, in combination with reproductive technologies, are revolutionizing the design and implementation of breeding programs in livestock species, particularly in cattle. GS leverages genomic readouts to provide estimates of breeding value early in the life of animals. However, the capacity of these approaches for improving genetic gain in breeding programs is limited by generation interval, the average age of an animal when replacement progeny are born. Here, we present a cost-effective approach that combines GS with reproductive technologies to reduce generation interval by rapidly producing high genetic merit calves.
Analysis of low-field isotropic vortex glass containing vortex groups in YBa2Cu3O7−x thin films visualized by scanning SQUID microscopy
Authors: Wells Frederick S. , Pan Alexey V. , Wang X. Renshaw , Fedoseev Sergey A. , Hilgenkamp Hans
Published: March 2015

The glass-like vortex distribution in pulsed laser deposited YBa2Cu3O7 − x thin films is observed by scanning superconducting quantum interference device microscopy and analysed for ordering after cooling in magnetic fields significantly smaller than the Earth's field. Autocorrelation calculations on this distribution show a weak short-range positional order, while Delaunay triangulation shows a near-complete lack of orientational order. The distribution of these vortices is finally characterised as an isotropic vortex glass. Abnormally closely spaced groups of vortices, which are statistically unlikely to occur, are observed above a threshold magnetic field. The origin of these groups is discussed, but will require further investigation.
Nitrogen fertilizer dose alters fungal communities in sugarcane soil and rhizosphere
Authors: Paungfoo-Lonhienne Chanyarat , Yeoh Yun Kit , Kasinadhuni Naga Rup Pinaki , Lonhienne Thierry G. A. , Robinson Nicole , Hugenholtz Philip , Ragan Mark A. , Schmidt Susanne
Published: March 2015

Fungi play important roles as decomposers, plant symbionts and pathogens in soils. The structure of fungal communities in the rhizosphere is the result of complex interactions among selection factors that may favour beneficial or detrimental relationships. Using culture-independent fungal community profiling, we have investigated the effects of nitrogen fertilizer dosage on fungal communities in soil and rhizosphere of field-grown sugarcane. The results show that the concentration of nitrogen fertilizer strongly modifies the composition but not the taxon richness of fungal communities in soil and rhizosphere. Increased nitrogen fertilizer dosage has a potential negative impact on carbon cycling in soil and promotes fungal genera with known pathogenic traits, uncovering a negative effect of intensive fertilization.
Nanostructured Carbon Materials for Catalysis
Authors: Serp Philippe , Machado Bruno
Published: March 2015

"We heartily recommend this book to all readers who wish to gain a better understanding of nanostructured carbon materials surface properties and used in catalysis." An-Hui Lu, ChemCatChem

There is great interest in using nanostructured carbon materials in catalysis, either as supports for immobilizing active species or as metal-free catalysts due to their unique structural, thermal, chemical, electronic and mechanical properties, and tailorable surface chemistry. This book looks at the structure and properties of different doped and undoped nanocarbons including graphene; fullerenes; nanodiamonds; carbon nanotubes and nanofibers; their synthesis and modification to produce catalysts. Special attention is paid to adsorption, as it impacts the application of these materials in various industrially relevant catalytic reactions discussed herein, in addition to photocatalysis and electrocatalysis. Written by leading experts in the area, this is the first book to provide a comprehensive view of the subject for the catalysis community.
Magnetic high throughput screening system for the development of nano-sized molecularly imprinted polymers for controlled delivery of curcumin
Authors: Piletska Elena V. , Abd Bashar H. , Krakowiak Agata S. , Parmar Anitha , Pink Demi L. , Wall Katie S. , Wharton Luke , Moczko Ewa , Whitcombe Michael J. , Karim Kal , Piletsky Sergey A.
Published: March 2015

A novel format of the microtitre plate equipped with magnetic inserts allows rapid and cost-effective development of the controlled release materials.
A Ag-molecularly imprinted polymer composite for efficient surface-enhanced Raman scattering activities under a low-energy laser
Authors: Chen Shaona , Li Xin , Guo Yan , Qi Jingyao
Published: March 2015

In this work, we have fabricated flower-shaped Ag particles coated with a molecularly imprinted polymer (Ag@MIP) based on the molecular imprinting technique and SERS technology.
Capillary column coated with graphene quantum dots for gas chromatographic separation of alkanes and aromatic isomers
Authors: Zhang Xueyan , Ji Hongyun , Zhang Xudong , Wang Zhen , Xiao Dan
Published: March 2015

A GQD coated capillary column has been employed for the first time for successful separation of alkanes and aromatic isomers at low temperature in a short time.
Investigating nanoparticle properties in plasmonic nanoarchitectures with DNA by surface plasmon resonance imaging
Authors: Mariani Stefano , Scarano Simona , Ermini Maria Laura , Bonini Massimo , Minunni Maria
Published: March 2015

The optimal optical coupling conditions between SPWs and nanoparticle LSPs can be achieved by overlapping the source wavelength with the wavelength of excitation of LSPs.
Cu-deficiency induced structural transition of Cu2−xTe
Authors: Yu Lei , Luo Kun , Chen Shiyou , Duan Chun-Gang
Published: March 2015

All the reported structures of Cu2Te are found to be metastable with respect to the phase separation Cu2Te → Cu2−xTe + xCu, which causes a structural transition of Cu2−xTe from the monoclinic structure (stable when x = 0) to the trigonal structure (0.125 ≤ x ≤ 0.625). The experimental XRD peaks of Cu2−xTe samples should be attributed to the trigonal structure.
Collision cross section measurements for biomolecules within a high-resolution FT-ICR cell: theory
Authors: Guo Dan , Xin Yi , Li Dayu , Xu Wei
Published: March 2015

An energetic hard-sphere collision model for modern high-resolution FT-ICR.
Organic field-effect transistor-based gas sensors
Authors: Zhang Congcong , Chen Penglei , Hu Wenping
Published: March 2015

This tutorial review reports the recent progress on OFET gas sensors, including their working principle, and protocols for high-performance sensing.
A lanthanide salen “square prism” and a wrapped exo-lanthanide salen “double decker”
Authors: Shu Yu-Bo , Liu Wei-Sheng
Published: March 2015

We succeeded in building a lanthanide salen “square prism” and in wrapping a labile exo-lanthanide salen “double decker” by cuprous cyanide netting. Both lanthanide edifices show near-infrared (NIR) luminescence.
Environmental photochemistry of single layered graphene oxide in water
Authors: Zhao Yingcan , Jafvert Chad T.
Published: March 2015

This study shows that O2˙− and H2O2 are produced through reduction of O2 upon solar light irradiation of aqueous graphene oxide.
An integrated methodology for the assessment of environmental health implications during thermal decomposition of nano-enabled products
Authors: Sotiriou Georgios A. , Singh Dilpreet , Zhang Fang , Wohlleben Wendel , Chalbot Marie-Cecile G. , Kavouras Ilias G. , Demokritou Philip
Published: March 2015

The regulatory framework of nano-enabled products should be based on properties of the nano-emissions during the product life-cycle rather than the properties of raw materials used in the product synthesis.
Heat-induced aggregation of thylakoid membranes affect their interfacial properties
Authors: Östbring Karolina , Rayner Marilyn , Albertsson Per-Åke , Erlanson-Albertsson Charlotte
Published: March 2015

Heat treatment of thylakoid membranes induce loss of chlorophyll, reduced emulsifying capacity and reduced lipase/co-lipase inhibition capacityin vitro.
Bile acid binding capacity of fish protein hydrolysates from discard species of the West Mediterranean Sea
Authors: Pérez-Gálvez Raúl , García-Moreno Pedro J. , Morales-Medina Rocío , Guadix Antonio , Guadix Emilia M.
Published: March 2015

Fish protein hydrolysates from six fish discard species in the West Mediterranean Sea were tested for theirin vitrobile acid binding capacity.
Quercetin and related polyphenols: new insights and implications for their bioactivity and bioavailability
Authors: Kawabata Kyuichi , Mukai Rie , Ishisaka Akari
Published: March 2015

The physiological functions and mechanisms of action of quercetin and its related polyphenols are highlighted, including their effects on brain, blood vessels, muscle, and intestinal microflora.
Synthesis of dendrimer-supported ferrocenylmethyl aziridino alcohol ligands and their application in asymmetric catalysis
Authors: Zhao Wen-Xian , Liu Nian , Li Gao-Wei , Chen Dong-Li , Zhang An-An , Wang Min-Can , Liu Lantao
Published: March 2015

Dendrimer-supported ferrocenylmethyl aziridino alcohols have been developed and applied as efficient, recoverable and recyclable catalysts in asymmetric catalysis.
Efficient one-pot production of 1,2-propanediol and ethylene glycol from microalgae (Chlorococcum sp.) in water
Authors: Miao G. , Zhu C. C. , Wang J. J. , Tan Z. C. , Wang L. , Liu J. L. , Kong L. Z. , Sun Y. H.
Published: March 2015

Direct one-pot valorization of aquatic microalgae for high yield production of alkanediols over an easily prepared Ni-based catalyst with excellent tolerance of nitrogen-containing components was demonstrated.
Design, synthesis and biological evaluation of thiourea and nicotinamide-containing sorafenib analogs as antitumor agents
Authors: Kong Xiangkai , Yao Zeyu , He Zuopeng , Xu Wenfang , Yao Jianwen
Published: March 2015

Thiourea and nicotinamide-containing sorafenib analogs with better antiproliferative and anti-angiogenic activities than sorafenib were well designed and synthesized.
Water bamboo-derived porous carbons as electrode materials for supercapacitors
Authors: Li Jiangfeng , Wu Qingsheng
Published: March 2015

Water bamboo-derived activated carbon materials were synthesized through the activation of KOH. These materials show a rectangular shape at the scan rate of 50 mV s−1. The activated carbon synthesized at a 2 : 1 ratio of KOH shows the most excellent stability in the long-term cycles.
In silico study on the mechanism of formation of hydrazine and nitrogen in the reactions of excess hydroxylamine with 2,4-dinitrophenyl diethyl phosphate
Authors: Chandar Nellore Bhanu , Ganguly Bishwajit
Published: March 2015

Decomposition study of 2,4-dinitrophenyl diethyl phosphate to hydrazine and nitrogen gas with excess of hydroxylamine using quantum chemical calculations.
Biosafety evaluations of well-dispersed mesoporous silica nanoparticles: towards in vivo-relevant conditions
Authors: Liu Tsang-Pai , Wu Si-Han , Chen Yi-Ping , Chou Chih-Ming , Chen Chien-Tsu
Published: March 2015

This study aimed to investigate how mesoporous silica nanoparticles (MSNs), especially focussing on their surface functional groups, interacted with Raw 264.7 macrophages in vitro, as well as with zebrafish embryos in vivo.
Understanding the conductive channel evolution in Na:WO3−x-based planar devices
Authors: Shang Dashan , Li Peining , Wang Tao , Carria Egidio , Sun Jirong , Shen Baogen , Taubner Thomas , Valov Ilia , Waser Rainer , Wuttig Matthias
Published: March 2015

The conductive channel evolution in Na:WO3−xfilms is visualized byin situoptical imaging combined with near-field infrared imaging techniques.
Electrochemical and surface characteristics of sputter-deposited amorphous Mn–Zr–Cr alloys in a 1 M H2SO4solution
Authors: El-Moneim A. A. , Ezzat M. , Badawy W. A.
Published: March 2015

Passive films on Mn–Zr–Cr are composed of oxy-hydroxide which is responsible for the high corrosion resistance.
Coupling with a narrow-band-gap semiconductor for enhancement of visible-light photocatalytic activity: preparation of Bi2S3/g-C3N4 and application for degradation of RhB
Authors: Rong Xinshan , Qiu Fengxian , Yan Jie , Zhao Hao , Zhu Xiaolu , Yang Dongya
Published: March 2015

Bi2S3 was synthesized on the surface of g-C3N4 to narrow the band gap of the catalyst for a visible-light response.
Biochemical characterization of an extreme alkaline and surfactant-stable keratinase derived from a newly isolated actinomycete Streptomyces aureofaciens K13
Authors: Gong Jin-Song , Wang Yue , Zhang Dan-Dan , Zhang Rong-Xian , Su Chang , Li Heng , Zhang Xiao-Mei , Xu Zheng-Hong , Shi Jin-Song
Published: March 2015

Streptomyces aureofaciensK13 keratinase exhibited distinct properties and showed significant potential in the detergent industry.
Dielectric relaxation and electro-optic response in nano-ceria dispersed ferroelectric liquid crystal nanocomposites: effect of structural deformation and lattice straining
Authors: Goel Puja , Arora Manju
Published: March 2015

The current investigations deal with the effect of concentration of CeO2 nanoparticles (NPs) on physical properties of ferroelectric liquid crystal.
Elastomeric microfluidic valve with low, constant opening threshold pressure
Authors: Shin Jaemin , Park Hobin , Dang Van Bac , Kim Chang-Wan , Kim Sung-Jin
Published: March 2015

This paper presents the realization of low, constant opening threshold pressures of an elastomeric valve by appropriate design and surface coating of the valve in a self-oscillating microfluidic device.
Retracted Article: Synthesis of diacylglycerol analogs bearing photoaffinity tags for labelling mammalian diacylglycerol kinase
Authors: Eni Sammy Eni , Rowland Meng , Best Michael D.
Published: March 2015

This communication reports the synthesis of diacylglycerol (DAG) probes with different photoaffinity tags for cross-linking and reducing the activity diacylglycerol kinase (DGK).
Ru(ii)–Re(i) binuclear photocatalysts connected by –CH2XCH2– (X = O, S, CH2) for CO2reduction
Authors: Kato Eishiro , Takeda Hiroyuki , Koike Kazuhide , Ohkubo Kei , Ishitani Osamu
Published: March 2015

New Ru(ii)–Re(i) diads with bridging ligands constructed of two diimines connected by –CH2OCH2– or –CH2SCH2– were synthesized and investigated as photocatalysts with enhanced oxidation power.
Improving the TiO2 electron transport layer in perovskite solar cells using acetylacetonate-based additives
Authors: Wang Hsin-Hua , Chen Qi , Zhou Huanping , Song Luo , Louis Zac St , Marco Nicholas De , Fang Yihao , Sun Pengyu , Song Tze-Bin , Chen Huajun , Yang Yang
Published: March 2015

A facile and quantitative approach has been demonstrated to improve the TiO2 ETL in perovskite solar cells, with enhanced carrier extraction.
Cationic liposomes as efficient nanocarriers for the drug delivery of an anticancer cholesterol-based ruthenium complex
Authors: Vitiello Giuseppe , Luchini Alessandra , D'Errico Gerardino , Santamaria Rita , Capuozzo Antonella , Irace Carlo , Montesarchio Daniela , Paduano Luigi
Published: March 2015

Cationic nanovectors loaded with Ru-based nucleolipids exert a high growth-inhibitory activity against human cancer cells (MCF-7 (A), WiDr (B), and HeLa (C)).
Microemulsion electrokinetic chromatography with polarity switching stacking mode for the determination of dexamethasone and dexamethasone sodium phosphate: application to pharmacokinetic studies in rabbit plasma
Authors: Maher Hadir M. , Alzoman Nourah Z. , Alshehri Mona M. , Aljohar Haya I. , Sultan Maha A.
Published: March 2015

MEEKC electropherograms of (A) a standard mixture of (2.0 μg mL−1) HCT, (1), DEX-SP, (2), and DEX, (3) and (B) the treated rabbit plasma sample.
Integration of bacteriorhodopsin with upconversion nanoparticles for NIR-triggered photoelectrical response
Authors: Lu Zhisong , Wang Jing , Xiang Xiutao , Li Rui , Qiao Yan , Li Chang Ming
Published: March 2015

Transient spikes from bacteriorhodopsin (bR) are triggered with NIR irradiation for the first time by integrating bR with upconversion nanoparticles.
DNA-templated in situ growth of silver nanoparticles on mesoporous silica nanospheres for smart intracellular GSH-controlled release
Authors: Liu Changhui , Qing Zhihe , Zheng Jing , Deng Li , Ma Cheng , Li Jishan , Li Yinhui , Yang Sheng , Yang Jinfeng , Wang Jing , Tan Weihong , Yang Ronghua
Published: March 2015

AgNPs are preparedin situby the DNA-templated process as tunable gatekeepers for mesoporous silica nanocontainers for smart intracellular GSH-controlled release.
Boosting of activity enhancement of K+-responsive quadruplex hammerhead ribozyme
Authors: Yamaoki Yudai , Mashima Tsukasa , Nagata Takashi , Katahira Masato
Published: March 2015

Second-generation quadruplex hammerhead ribozymes, whose activity enhances in response to K+, were developed. New strategies suppressed the basal activity and boosted the activity enhancement upon the addition of K+ to 21-fold.
Transparent ALD-grown Ta2O5 protective layer for highly stable ZnO photoelectrode in solar water splitting
Authors: Li Chengcheng , Wang Tuo , Luo Zhibin , Zhang Dong , Gong Jinlong
Published: March 2015

This communication describes the design of a highly stable ZnO/Ta2O5 photoanode with ultrathin Ta2O5 protective layers deposited by atomic layer deposition. The transparency of Ta2O5 to sunlight accounts for the excellent stability of the photoelectrode in a strong base environment.
Combination of automated solid-phase and enzymatic oligosaccharide synthesis provides access to α(2,3)-sialylated glycans
Authors: Fair Richard J. , Hahm Heung Sik , Seeberger Peter H.
Published: March 2015

A synthetic strategy combining automated solid-phase chemical synthesis and enzymatic sialylation was developed to access α(2,3)-sialylated glycans.
Ibuprofen causes photocleavage through ROS generation and intercalates with DNA: a combined biophysical and molecular docking approach
Authors: Husain Mohammed Amir , Sarwar Tarique , Rehman Sayeed Ur , Ishqi Hassan Mubarak , Tabish Mohammad
Published: March 2015

Ibuprofen is an important nonsteroidal anti inflammatory drug which intercalates with DNA and causes phototoxicity through ROS generation.
Multifunctional lanthanide and silver ion co-doped nano-chlorapatites with combined spectroscopic and antimicrobial properties
Authors: Wiglusz R. J. , Drulis-Kawa Z. , Pazik R. , Zawisza K. , Dorotkiewicz-Jach A. , Roszkowiak J. , Nedelec J. M.
Published: March 2015

Multifunctional nanocrystalline chlorapatites doped with lanthanide ions (Eu3+, Er3+and Yb3+) and co-doped with silver ions were synthesized by a hydrothermal synthesis route and studied.
Blocking and bridging ligands direct the structure and magnetic properties of dimers of pentacoordinate nickel(ii)
Authors: López-Banet Luisa , Santana M. Dolores , García Gabriel , Pérez José , García Luís , Lezama Luis , da Silva Iván
Published: March 2015

Magneto-structural correlations have been established for dimers of pentacoordinate nickel(ii) that contain different blocking ligands and different bridges.
Ligand assisted carbon dioxide activation and hydrogenation using molybdenum and tungsten amides
Authors: Chakraborty Subrata , Blacque Olivier , Berke Heinz
Published: March 2015

Molybdenum and tungsten amides M(NO)(CO)(PNP) {M = Mo, 3a; W, 3b; PNP = (iPr2PCH2CH2)2N} can activate CO2 at room temperature forming carbamate species M(NO)(CO)(PNP)(OCO) (M = Mo, 4a(trans); W = 4b(trans). Employing 3a,b stoichiometric hydrogenation of carbon dioxide could be demonstrated.
New palladium(ii) and platinum(ii) 5,5-diethylbarbiturate complexes with 2-phenylpyridine, 2,2′-bipyridine and 2,2′-dipyridylamine: synthesis, structures, DNA binding, molecular docking, cellular uptake, antioxidant activity and cytotoxicity
Authors: Icsel Ceyda , Yilmaz Veysel T. , Kaya Yunus , Samli Hale , Harrison William T. A. , Buyukgungor Orhan
Published: March 2015

DNA interaction, antioxidant and cytotoxic activities of Pd(ii)/Pt(ii) 5,5-diethylbarbiturate complexes were evaluated.
Novel carbapenem chalcone derivatives: synthesis, cytotoxicity and molecular docking studies
Authors: Kommidi Devendar Reddy , Pagadala Ramakanth , Rana Surjyakanta , Singh Parvesh , Shintre Suhas A. , Koorbanally N. A. , Jonnalagadda Sreekantha B. , Moodley Brenda
Published: March 2015

One-pot efficient synthetic protocol is described for the synthesis of carbapenem chalcone derivatives using AAPTMS@MCM-41 heterogeneous catalyst.
Synthesis of 2-anilinopyridyl–triazole conjugates as antimitotic agents
Authors: Kamal Ahmed , Subba Rao A. V. , Vishnuvardhan M. V. P. S. , Srinivas Reddy T. , Swapna Konderu , Bagul Chandrakant , Subba Reddy N. V. , Srinivasulu Vunnam
Published: March 2015

The newly synthesized 2-anilinopyridyl–triazole conjugates with excellent pharmacological profile could serve as leads for further optimization.
Receptor-templated stapling of intrinsically disordered peptide ligands
Authors: Haney Conor M. , Horne W. Seth
Published: March 2015

We report here a method for peptide stapling where a protein receptor guides the reaction by acting as a template that folds a disordered ligand into a bioactive state prior to cyclization.
One pot synthesis of diarylfurans from aryl esters and PhI(OAc)2via palladium-associated iodonium ylides
Authors: Bao Yong-Sheng , Agula Bao , Zhaorigetu Bao , Jia Meilin , Baiyin Menghe
Published: March 2015

Palladium-catalyzed intermolecular cyclization for the synthesis of various diarylfurans from aryl esters and PhI(OAc)2via iodonium ylide rearrangement induced by Pd(ii) has been reported.
Copper-catalyzed asymmetric allylation of chiral N-tert-butanesulfinyl imines: dual stereocontrol with nearly perfect diastereoselectivity
Authors: Zhao Yi-Shuang , Liu Qiang , Tian Ping , Tao Jing-Chao , Lin Guo-Qiang
Published: March 2015

Copper-catalyzed asymmetric allylation of chiral N-tert-butanesulfinyl imines has been described.
Silylative coupling of olefins with vinylsilanes in the synthesis of functionalized alkenes
Authors: Szudkowska-Frątczak Justyna , Hreczycho Grzegorz , Pawluć Piotr
Published: March 2015

Recent developments in the sequential synthetic strategies including ruthenium-catalyzed silylative coupling followed by desilylation, leading to π-conjugated organic derivatives are presented.
A hybrid aerogel of Co–Al layered double hydroxide/graphene with three-dimensional porous structure as a novel electrode material for supercapacitors
Authors: Zhang Aili , Wang Cong , Xu Qunjie , Liu Haimei , Wang Yonggang , Xia Yongyao
Published: March 2015

3D porous Co–Al layered double hydroxide/graphene hybrid aerogel was prepared by a facile in situ hydrothermal method and showed high electrical conductivity, mechanical flexibility, and good electrochemical performance for supercapacitors.
Deep oxidative desulfurization catalyzed by an ionic liquid-type peroxotungsten catalyst
Authors: Chen Jizhong , Chen Chen , Zhang Ran , Guo Li , Hua Li , Chen Angjun , Xiu Yuhe , Liu Xuerui , Hou Zhenshan
Published: March 2015

Peroxotungsten anion-based ionic liquid-type catalysts carried out the deep desulfurization of model oil with H2O2 under mild and solvent-free conditions with high efficiency.
Humidity sensing properties of SrTiO3 nanospheres with high sensitivity and rapid response
Authors: Li Dongmei , Zhang Jingjing , Shen Liang , Dong Wei , Feng Caihui , Liu Caixia , Ruan Shengping
Published: March 2015

SrTiO3 Nanospheres were employed for the first time to detect humidity and showed ultrafast response and recovery speeds.
Cytotoxicity in vitro, cell migration and apoptotic mechanism studies induced by ruthenium(ii) complexes
Authors: Li Wei , Han Bing-Jie , Yao Jun-Hua , Jiang Guang-Bin , Liu Yun-Jun
Published: March 2015

Four Ru(ii) complexes [Ru(N–N)2(DHBT)](ClO4)2 were synthesized and characterized. The cytotoxicity in vitro, apoptosis, comet assay, cell migration, ROS, mitochondrial membrane potential, cell cycle arrest and expression of proteins were investigated.
Praseodymium oxide nanostructures: novel solvent-less preparation, characterization and investigation of their optical and photocatalytic properties
Authors: Zinatloo-Ajabshir Sahar , Salavati-Niasari Masoud , Hamadanian Masood
Published: March 2015

Praseodymium oxide (Pr6O11) nanostructures were prepared via a new simple solvent-less route.
Graphene-based structural adhesive to enhance adhesion performance
Authors: Guadagno Liberata , Sarno Maria , Vietri Umberto , Raimondo Marialuigia , Cirillo Claudia , Ciambelli Paolo
Published: March 2015

Graphene platelets, embedded in the adhesive and adherents of epoxy joints, acting on the chemical compatibility at the interface, lead to a considerable improvement in the mechanical performance as compared to the unfilled joints.
Template GNL-assisted synthesis of porous Li1.2Mn0.534Ni0.133Co0.133O2: towards high performance cathodes for lithium ion batteries
Authors: Huang Yanling , Hou Xianhua , Ma Shaomeng , Zou Xiaoli , Wu Yuping , Hu Shejun , Shao Zongping , Liu Xiang
Published: March 2015

A high performance cathode of porous Li1.2Mn0.534Ni0.133Co0.133O2 for lithium ion batteries synthesized by a GNL-template.
Controlled removal of monolayers for bilayer graphene preparation and visualization
Authors: Gan Lin , Zhang Haijing , Wu Ruizhe , Ding Yao , Sheng Ping , Luo Zhengtang
Published: March 2015

Selective oxidation of monolayer graphene allows the visualization and preparation of bilayer graphene.
A glucosyl triblock copolymer: synthesis and its injectable thermo- and pH-responsive behaviours
Authors: Sun Tongming , Zhu Jinli , Wang Miao , Lu Minlei , Ding Jinjin , Lv Ziting , Hua Ping , Zhang Yuejun
Published: March 2015

A new glucosyl triblock PGNA copolymer was first synthesized and the aqueous PGNA copolymer solution exhibits good sol–gel phase transition behaviours. The formed hydrogels are sensitive to the temperature and pH.
Cotton flame retardancy: state of the art and future perspectives
Authors: Alongi Jenny , Malucelli Giulio
Published: March 2015

This paper reviews the most significant achievements in cotton flame retardancy merging past experience and current efforts.
An insight into the solvent effect on the positional selectivity of the immobilized lipase from Burkholderia cepacia in 1,3-diolein synthesis
Authors: Bi Yan-Hong , Wang Zhao-Yu , Duan Zhang-Qun , Zhao Xiang-Jie , Chen Xiao-Ming , Nie Ling-Hong
Published: March 2015

The diolein yield was higher while the ratio of 1,3-diolein to 1,2-diolein was smaller in solvents with higher log P values.
General solvent-free ionic liquid catalyzed C–N/C–C coupled cyclization to diverse dihydropyrimidinones and new organic materials: Langmuir–Blodgett film study
Authors: Majumdar Swapan , De Jhinuk , Pal Ajitesh , Ghosh Indra , Nath Ranendu K. , Chowdhury Sandip , Roy Dipanwita , Maiti Dilip K.
Published: March 2015

An ionic liquid catalyzed dual C–N/C–C coupled cyclization under solvent-free green conditions to DHPMs and their innovative new organic materials by LB film study are demonstrated.
Stereocomplex crystallite network in poly(d,l-lactide): formation, structure and the effect on shape memory behaviors and enzymatic hydrolysis of poly(d,l-lactide)
Authors: Li Yi , Xin Shuangyang , Bian Yijie , Dong Qinglin , Han Changyu , Xu Kun , Dong Lisong
Published: March 2015

Rheological, mechanical properties and shape memory properties of PDLLA could be greatly improved through solution blending with sc-PLA.
Investigation of antiglycation activity of isoprenaline
Authors: Kolekar Yogesh M. , Vannuruswamy Garikapati , Bansode Sneha B. , B Santhakumari , Thulasiram Hirekodathakallu V. , Kulkarni Mahesh J.
Published: March 2015

Isoprenaline reduces the advanced glycation end products and may be suitable candidate for the treatment of glycation associated diseases.
Reduction degree and property study of graphene nanosheets prepared with different reducing agents and their applicability as a carrier of the Ru(phen)3Cl2luminescent sensor for DNA detection
Authors: Li Hongjuan , Wen Jia , Yu Ruijin , Bai Caihui , Xu Yongqian , Liu Zong-Huai , Sun Shiguo
Published: March 2015

Recently, graphene nanosheets (GNS) have been widely investigated and used in capacitors, catalysts, biological/chemical sensors,etc.
Sequence-selective binding of oligonucleotides to superparamagnetic cobalt ferrite nanoparticles: a new way to fabricate functional nanoconjugates
Authors: Pershina A. G. , Ogorodova L. M. , Magaeva A. A. , Itin V. I. , Naiden E. P. , Izaak T. I. , Shchegoleva N. N. , Sazonov A. E.
Published: March 2015

The interaction between homo-oligonucleotides and unmodified superparamagnetic cobalt ferrite nanoparticles has been investigated.
Evaluation of the Yasuda parameter for the atmospheric plasma deposition of allyl methacrylate
Authors: Kakaroglou Alexandros , Nisol Bernard , Baert Kitty , De Graeve Iris , Reniers François , Van Assche Guy , Terryn Herman
Published: March 2015

Plasma density influences the chemistry and the morphology of deposited plasma polymers even under the same energy to monomer ratio.
Metal oxide arrays from block copolymer thin film templates
Authors: Mayeda Michael K. , Hayat Jeffery , Epps Thomas H. , Lauterbach Jochen
Published: March 2015

We present a simple, though uncommonly used, method to produce versatile, well-ordered, nanoscale arrays of metal oxides such as MgO, Al2O3, TiO2, MnO2, Fe2O3, Co3O4, NiO, CuO, ZnO, ZrO2, RuO2, SnO2, or Ce2O3 by decoupling metal oxide precursor incorporation from block copolymer (BCP) template formation.
A high performance cathode for proton conducting solid oxide fuel cells
Authors: Wang Zhiquan , Yang Wenqiang , Shafi Shahid P. , Bi Lei , Wang Zhenbin , Peng Ranran , Xia Changrong , Liu Wei , Lu Yalin
Published: March 2015

Intermediate temperature solid-oxide fuel cells (IT-SOFCs) have become a need worldwide due to their greater fuel efficiency, lower air pollution, much reduced cost and excellent longtime stability in energy conversion devices.