bluuebunny/crossref_metadata_2025 huggingface dataset:
Dissipatively coupled waveguide networks for coherent diffusive photonics
Authors: Mukherjee Sebabrata , Mogilevtsev Dmitri , Slepyan Gregory Ya. , Doherty Thomas H. , Thomson Robert R. , Korolkova Natalia
Published: November 2017

A photonic circuit is generally described as a structure in which light propagates by unitary exchange and transfers reversibly between channels. In contrast, the term ‘diffusive’ is more akin to a chaotic propagation in scattering media, where light is driven out of coherence towards a thermal mixture. Based on the dynamics of open quantum systems, the combination of these two opposites can result in novel techniques for coherent light control. The crucial feature of these photonic structures is dissipative coupling between modes, via an interaction with a common reservoir. Here, we demonstrate experimentally that such systems can perform optical equalisation to smooth multimode light, or act as a distributor, guiding it into selected channels. Quantum thermodynamically, these systems can act as catalytic coherent reservoirs by performing perfect non-Landauer erasure. For lattice structures, localised stationary states can be supported in the continuum, similar to compacton-like states in conventional flat-band lattices.
Mechanism of early light signaling by the
carboxy-terminal output module of Arabidopsis phytochrome B
Authors: Qiu Yongjian , Pasoreck Elise K. , Reddy Amit K. , Nagatani Akira , Ma Wenxiu , Chory Joanne , Chen Meng
Published: November 2017

Plant phytochromes are thought to transduce light signals by mediating the degradation of phytochrome-interacting transcription factors (PIFs) through the N-terminal photosensory module, while the C-terminal module, including a histidine kinase-related domain (HKRD), does not participate in signaling. Here we show that the C-terminal module of Arabidopsis phytochrome B (PHYB) is sufficient to mediate the degradation of PIF3 specifically and to activate photosynthetic genes in the dark. The HKRD is a dimerization domain for PHYB homo and heterodimerization. A D1040V mutation, which disrupts the dimerization of HKRD and the interaction between C-terminal module and PIF3, abrogates PHYB nuclear accumulation, photobody biogenesis, and PIF3 degradation. By contrast, disrupting the interaction between PIF3 and PHYB’s N-terminal module has little effect on PIF3 degradation. Together, this study demonstrates that the dimeric form of the C-terminal module plays important signaling roles by targeting PHYB to subnuclear photobodies and interacting with PIF3 to trigger its degradation.
Efficient and flexible implementation of Langevin simulation for gene burst production
Authors: Yan Ching-Cher Sanders , Chepyala Surendhar Reddy , Yen Chao-Ming , Hsu Chao-Ping
Published: November 2017

Gene expression involves bursts of production of both mRNA and protein, and the fluctuations in their number are increased due to such bursts. The Langevin equation is an efficient and versatile means to simulate such number fluctuation. However, how to include these mRNA and protein bursts in the Langevin equation is not intuitively clear. In this work, we estimated the variance in burst production from a general gene expression model and introduced such variation in the Langevin equation. Our approach offers different Langevin expressions for either or both transcriptional and translational bursts considered and saves computer time by including many production events at once in a short burst time. The errors can be controlled to be rather precise (<2%) for the mean and <10% for the standard deviation of the steady-state distribution. Our scheme allows for high-quality stochastic simulations with the Langevin equation for gene expression, which is useful in analysis of biological networks.
Brain Structural Bases of Tendency to Forgive: evidence from a young adults sample using voxel-based morphometry
Authors: Li Haijiang , Chen Qunlin , Lu Jiamei , Qiu Jiang
Published: November 2017

Tendency to forgive refers to one’s global dispositional level of forgiveness across situations and relationships. Brain imaging studies examined activation patterns underlying forgiving response, yet focal differences in brain structures related to tendency to forgive have never been investigated. In this study, voxel-based morphometry was used to investigate relations between gray matter/white matter volume (GMV/WMV) and individual differences in tendency to forgive in a large young sample. Participants were 199 young students (60 men) who completed the tendency to forgive scale (TTF) and underwent an anatomical magnetic resonance imaging scan. Results showed that higher TTF scores were associated with larger GMV in the regions of dorsolateral prefrontal cortex, and smaller GMV in the regions of the right insular cortex and inferior frontal gyrus (IFG). Moreover, higher TTF scores were also related to smaller WMV in the regions of the left IFG. Together, these findings suggest structural variations for individual differences in the tendency to forgive, distributed across different brain regions associated with empathic response and cognitive control.
Dietary amino acids and incidence of hypertension: A principle component analysis approach
Authors: Teymoori Farshad , Asghari Golaleh , Mirmiran Parvin , Azizi Fereidoun
Published: November 2017

The current study aimed to investigate the association between dietary amino acid patterns and incidence of hypertension, using principal components factor analyses. This study was conducted within the framework of Tehran Lipid and Glucose Study on 4288 adults, who were free of hypertension at baseline (2008–2011) and were followed for three years (2011–2014). Principal component factor analyses were conducted based on eight amino acid groups and three amino acid patterns were extracted. The first pattern was characterized by branched chain, aromatic, and alcoholic amino acids, and proline. Acidic amino acids and proline were highly loaded in the second pattern and the third was characterized by sulphuric and small amino acids. Adjusted odds ratio of the highest quartile of the first pattern was 1.83 (95%CI: 1.21–2.77, P for trend = 0.002) compared to the lowest one. The first pattern had high positive correlation with dietary intakes of animal protein and dairy, but was negatively correlated with plant protein, fruit, and vegetable. There was no significant association for the second and third patterns. Findings indicate that the dietary amino acid pattern, rich in branched chain, aromatic, and alcoholic amino acids, and proline could increase the risk of hypertension.
Characteristics of soil C:N ratio and δ13C in wheat-maize cropping system of the North China Plain and influences of the Yellow River
Authors: Shi Huijin , Wang Xiujun , Xu Minggang , Zhang Haibo , Luo Yongming
Published: November 2017

To better understand the characteristics of soil organic matter (SOM) in the North China Plain, we evaluate the large scale variations of soil organic carbon (SOC), total nitrogen (TN), carbon to nitrogen (C:N) ratio and stable carbon isotopic compositions (δ13C) in SOC over 0–100 cm. To assess the influence of the Yellow River, 31 sites are selected from the wheat-maize double cropping system, and grouped into two: 10 sites near and 21 sites far from the river. Our data show that mean soil C:N ratio is low (7.6–9.9) across the region, and not affected by the Yellow River. However, SOC and TN are significantly (P < 0.05) lower in subsoil near the Yellow River (2.0 and 0.2–0.3 g kg−1 for SOC and TN) than far away (3.1 and 0.4 g kg−1); δ13C is significantly more negative below 60 cm near the river (−23.3 to −22.6‰) than far away (−21.8 to −21.4‰). We estimate that the contributions of wheat and maize to SOC are 61.3–68.1% and 31.9–38.8%, respectively. Our analyses indicate that the overall low levels of SOC in the North China Plain may be associated with the low soil C:N ratio and less clay content. The hydrological processes may also partly be responsible, particularly for those near the Yellow River.
Three-dimensional organotypic matrices from alternative collagen sources as pre-clinical models for cell biology
Authors: Conway James R. W. , Vennin Claire , Cazet Aurélie S. , Herrmann David , Murphy Kendelle J. , Warren Sean C. , Wullkopf Lena , Boulghourjian Alice , Zaratzian Anaiis , Da Silva Andrew M. , Pajic Marina , Morton Jennifer P. , Cox Thomas R. , Timpson Paul
Published: November 2017

Organotypic co-cultures bridge the gap between standard two-dimensional culture and mouse models. Such assays increase the fidelity of pre-clinical studies, to better inform lead compound development and address the increasing attrition rates of lead compounds within the pharmaceutical industry, which are often a result of screening in less faithful two-dimensional models. Using large-scale acid-extraction techniques, we demonstrate a step-by-step process to isolate collagen I from commercially available animal byproducts. Using the well-established rat tail tendon collagen as a benchmark, we apply our novel kangaroo tail tendon collagen as an alternative collagen source for our screening-ready three-dimensional organotypic co-culture platform. Both collagen sources showed equal applicability for invasive, proliferative or survival assessment of well-established cancer models and clinically relevant patient-derived cancer cell lines. Additional readouts were also demonstrated when comparing these alternative collagen sources for stromal contributions to stiffness, organization and ultrastructure via atomic force microscopy, second harmonic generation imaging and scanning electron microscopy, among other vital biological readouts, where only minor differences were found between the preparations. Organotypic co-cultures represent an easy, affordable and scalable model to investigate drug responses within a physiologically relevant 3D platform.
QuPath: Open source software for digital pathology image analysis
Authors: Bankhead Peter , Loughrey Maurice B. , Fernández José A. , Dombrowski Yvonne , McArt Darragh G. , Dunne Philip D. , McQuaid Stephen , Gray Ronan T. , Murray Liam J. , Coleman Helen G. , James Jacqueline A. , Salto-Tellez Manuel , Hamilton Peter W.
Published: November 2017

QuPath is new bioimage analysis software designed to meet the growing need for a user-friendly, extensible, open-source solution for digital pathology and whole slide image analysis. In addition to offering a comprehensive panel of tumor identification and high-throughput biomarker evaluation tools, QuPath provides researchers with powerful batch-processing and scripting functionality, and an extensible platform with which to develop and share new algorithms to analyze complex tissue images. Furthermore, QuPath’s flexible design makes it suitable for a wide range of additional image analysis applications across biomedical research.
Foraging and recruitment hotspot dynamics for the largest Atlantic loggerhead turtle rookery
Authors: Ceriani Simona A. , Weishampel John F. , Ehrhart Llewellyn M. , Mansfield Katherine L. , Wunder Michael B.
Published: November 2017

Determining patterns of migratory connectivity for highly-mobile, wide-ranging species, such as sea turtles, is challenging. Here, we combined satellite telemetry and stable isotope analysis to estimate foraging locations for 749 individual loggerheads nesting along the east central Florida (USA) coast, the largest rookery for the Northwest Atlantic population. We aggregated individual results by year, identified seven foraging hotspots and tracked these summaries to describe the dynamics of inter-annual contributions of these geographic areas to this rookery over a nine-year period. Using reproductive information for a subset of turtles (n = 513), we estimated hatchling yields associated with each hotspots. We found considerable inter-annual variability in the relative contribution of foraging areas to the nesting adults. Also reproductive success differed among foraging hotspots; females using southern foraging areas laid nests that produced more offspring in all but one year of the study. These analyses identified two high priority areas for future research and conservation efforts: the continental shelf adjacent to east central Florida and the Great Bahama Bank, which support higher numbers of foraging females that provide higher rates of hatchling production. The implementation of the continuous-surface approach to determine geographic origins of unknown migrants is applicable to other migratory species.
Blink associated resetting eye movements (BARMs) are functionally complementary to microsaccades in correcting for fixation errors
Authors: Khazali Mohammad Farhan , Pomper Joern K. , Thier Peter
Published: November 2017

Blinks do not only protect the eye, but they do also correct for torsional eye position deviations by blink-associated resetting eye movements (BARMs). Although BARMs are functionally distinct from other eye movements in the torsional dimension, it has remained open if BARMs observed in the horizontal and vertical dimensions (fixational BARMs) are not simply microsaccades coinciding with blinks. We show here that fixational BARMs are functionally distinct and complementary to microsaccades in the following way: First, they compensate for large fixational error more efficiently than microsaccades, secondly, their probability to be executed in eccentric eye positions is higher, and thirdly, they reset the eyes into a position zone that is broader as compared to microsaccades. This suggests that BARMs help to keep the eyes in a working range wherein microsaccades guarantee high acuity vision. Moreover, we establish that fixational BARMs operate in a retina-centric frame.
Rainbow trout exposed to benzo[a]pyrene yields conserved microRNA binding sites in DNA methyltransferases across 500 million years of evolution
Authors: Kuc Christopher , Richard Daniel J. , Johnson Samantha , Bragg Leslie , Servos Mark R. , Doxey Andrew C. , Craig Paul M.
Published: November 2017

The objective of this study was to examine the regulation of DNA methylation following acute (24 h) and prolonged (14 d) exposure to low (1 ng/L) and high (10 ng/L) benzo[a]pyrene. However, with the recent release of the rainbow trout genome, we were able to conduct a more detailed analysis regarding the regulation of the enzymes involved in DNA methylation; DNA methyltransferases (DNMTs). Bioinformatic approaches were used to identify candidate microRNA (miRNA) that potentially bind to the DNMT1 and DNMT3a 3′UTR. Results indicated a significant decrease in global methylation in both liver and muscle, with an associated decrease in DNA methyltransferase activity and DNMT3a transcript abundance. There was a significant increase in one specific candidate miRNA (miR29a) that was predicted to bind to DNMT3a. Taking a comparative genomics approach, the binding sites of miR29a to the DNMT3a 3′UTR was compared across species, spanning fish to mammals, and revealed a highly conserved binding motif that has been maintained since the vertebrate ancestor, approximately 500 million years ago. This research establishes that miRNA act as an essential mediator between the environment and DNA methylation patterns via DNMTs, which is further confirmed by a genomic regulatory mechanism that has been deeply conserved throughout evolution.
Increased pollinator service and reduced pollen limitation in the fixed dune populations of a desert shrub
Authors: Pan Cheng-Chen , Qu Hao , Feng Qi , Liu Lin-De , Zhao Ha-Lin , Li Yu-Lin , Li Yu-Qiang , Zhang Tong-Hui , Liu Xin-Ping
Published: November 2017

Evaluations of restoration success usually focus on the structural aspects of ecosystems. Pollination, as an important functional aspect, is often overlooked. Here, the shifts in pollinator assemblage and pollen limitation in the desert shrub Caragana microphylla were examined along a restoration gradient in Horqin Sand Land, northern China. We identified seven species of bees; however, only four bee species were found to be effective pollinators, with Xanthosaurus remota dominating in the fixed dunes, and with no bee species or only a single species, X. remota, being observed in the semi-fixed and mobile dunes. Flower visitation rate was nearly ten times higher in the fixed dunes than in the mobile and semi-fixed dunes. Experimental floral manipulations revealed that the fixed dune populations experienced less pollen limitation, along with the increase in pollinator availability. Between the mobile and semi-fixed dune populations, pollen limitation was severe and at similar levels. The intensity of pollen limitation was negatively related to pollinator abundance and richness. Overall, the dependence on pollinators for reproduction may be an important constraint that limits persistence in this system. Increased pollinator service during the restoration process may ameliorate pollen limitation, benefiting the restoration of vegetation in this semiarid sandy area.
Solution structure of the major fish allergen parvalbumin Sco j 1 derived from the Pacific mackerel
Authors: Kumeta Hiroyuki , Nakayama Haruka , Ogura Kenji
Published: December 2017

Although fish is an important part of the human diet, it is also a common source of food allergy. The major allergen in fish is parvalbumin, a well-conserved Ca2+-binding protein found in the white muscle of many fish species. Here, we studied the solution structure of the parvalbumin Sco j 1, derived from the Pacific mackerel, using nuclear magnetic resonance spectroscopy. We mapped the IgE-binding epitope proposed in a recent study onto the present structure. Interestingly, three of four residues, which were elucidated as key residues of the IgE-binding epitope, were exposed to solvent, whereas one residue faced the inside of the molecule. We expect that this solution structure can be used in future studies attempting to analyze the various IgE-binding modes of these allergens.
Effective litmus gene test for monitoring the quality of blood samples: Application to Alzheimer’s disease diagnostics
Authors: Shim Sung-Mi , Kim Jong-Hoon , Jeon Jae-Pil
Published: November 2017

Gene expression profiles reflect the biologically diverse activities of cells under specific cell environments. Using the transcriptional response of cultured cells to blood composition, we developed a litmus gene assay to discriminate blood samples reflecting different sample qualities or disease conditions. This cell-based litmus gene assay identified six genes (CCL20,CEMIP,IL1B,IL8,PRG2,PTGS2) as potential biomarkers of plasma quality control and theSPC25gene as a diagnostic biomarker of Alzheimer’s disease (AD). In addition, theSPC25gene expression level was significantly increased in the cell-based assay using serum samples from patients with mild cognitive impairment (MCI). In conclusion, we demonstrated the effectiveness and potential of a litmus gene assay to detect the orchestrated effects of circulating systemic factors, leading to the successful diagnosis of AD and MCI. This method is broadly applicable to the diagnosis of disease subtypes or patho-physiological stages of complex diseases and tumors.
Association between smoking and the peripheral vestibular disorder: a retrospective cohort study
Authors: Wada Masaoki , Takeshima Taro , Nakamura Yosikazu , Nagasaka Shoichiro , Kamesaki Toyomi , Kajii Eiji , Kotani Kazuhiko
Published: November 2017

Common inner ear diseases include peripheral vestibular disorder (PVD) and hearing impairment. The association between smoking and peripheral vestibular disorder (PVD) is unclear. We examined associations between smoking and new PVD events. In this retrospective study, we consecutively enrolled 393 participants aged ≥20 years [mean age 65.3 years; males 133 (33.8%)] treated for hypertension, dyslipidaemia, or diabetes mellitus at a primary care clinic between November 2011 and March 2013. Participants were categorized as ever-smokers (including current and past -smokers; divided per <30 and ≥30 pack-years), and never-smokers. New PVD events were reported over a 1-year follow-up period. Hazard ratios (HR) for new onset PVD were estimated using the Cox proportional hazard regression model. Compared to never-smokers, the adjusted HR was 2.22 for ever-smokers and 2.70 for all ever-smokers with ≥30 pack-years among all 393 participants. Among male participants, compared to never-smokers, the adjusted HR was 4.41 for ever-smokers with ≥30 pack-years. A smoking history of ≥30 pack-years was strongly associated with the risk of new onset PVD in males but not, females. This study may assist patients with smoking cessation for the prevention of new PVD events among males.
Re-entrant spin glass transitions: new insights from acoustic absorption by domain walls
Authors: Kustov S. , Torrens-Serra J. , Salje E. K. H. , Beshers D. N.
Published: November 2017

Re-entrant spin glass (RSG) transitions in Ni-Mn and Au-Fe have been reassessed by acoustic measurements of the magneto-mechanical damping by domain walls. Stress-induced non-thermally activated domain wall dynamics is progressively replaced by an intense thermally activated relaxational response when the temperature approaches the RSG freezing point. A “frozen” state with negligible motion of domain walls on atomic and mesoscopic scales occurs in the RSG. We propose that RSG freezing has its origin in intrinsic properties of domain walls.
IL-4 driven transcription factor FoxQ1 is expressed by monocytes in atopic dermatitis and stimulates monocyte migration
Authors: Ovsiy Ilja , Riabov Vladimir , Manousaridis Ioannis , Michel Julia , Moganti Kondaiah , Yin Shuiping , Liu Tengfei , Sticht Carsten , Kremmer Elisabeth , Harmsen Martin C. , Goerdt Sergij , Gratchev Alexei , Kzhyshkowska Julia
Published: November 2017

Monocytes are actively recruited at sites of chronic inflammation. However, molecular factors involved in this process are not fully elucidated. Here, we show that cytokine IL-4 which is implicated in the development of chronic inflammatory disease atopic dermatitis (AD) induces expression of transcription factor FoxQ1 in human monocytes and macrophages. FoxQ1 mRNA levels were elevated in monocytes of AD patients compared to healthy donors. Overexpression of FoxQ1 in RAW 264.7 monocytic cells facilitated their migration towards MCP-1 and was associated with decreased expression of migration-regulating genes (claudin 11 and plexin C1). Furthermore, FoxQ1 overexpression in RAW cells accelerated TNFα secretion after LPS challenge. Overall, our results indicate that FoxQ1 stimulates monocyte motility, increases pro-inflammatory potential, and directs monocyte migration towards MCP-1 that is crucial for monocyte influx into inflammatory sites. This mechanism could contribute to the pathogenesis of chronic inflammatory disorders such as AD.
Local field potentials are induced by visually evoked spiking activity in macaque cortical area MT
Authors: Esghaei Moein , Daliri Mohammad Reza , Treue Stefan
Published: December 2017

Local field potentials (LFP) have been the focus of many recent studies in systems neuroscience. However, the exact neural basis of these signals remains unclear. To address this question, we determined the relationship between LFP signals and another, much better understood, signature of neural activity: action potentials. Specifically, we focused on the relationship between the amplitude of stimulus-induced LFPs and the magnitude of spiking activity in visual cortex of non-human primates. Our trial-by-trial correlation analyses between these two components of extracellular signals in macaque visual cortex show that the spike rate is coupled to the LFP amplitude with a surprisingly long latency, typically 50 ms. Our analysis shows that the neural spike rate is a significant predictor of the LFP amplitude. This limits the functional interpretation of LFP signals beyond that based on spiking activities.
A Novel Electroactive Agarose-Aniline Pentamer Platform as a Potential Candidate for Neural Tissue Engineering
Authors: Zarrintaj Payam , Bakhshandeh Behnaz , Rezaeian Iraj , Heshmatian Behnam , Ganjali Mohammad Reza
Published: December 2017

Neuronal disorder is an important health challenge due to inadequate natural regeneration, which has been responded by tissue engineering, particularly with conductive materials. A bifunctional electroactive scaffold having agarose biodegradable and aniline pentamer (AP) conductive parts was designed that exhibits appropriate cell attachment/compatibility, as detected by PC12 cell seeding. The developed carboxyl-capped aniline-pentamer improved agarose cell adhesion potential, also the conductivity of scaffold was in the order 10−5 S/cm reported for cell membrane. Electrochemical impedance spectroscopy was applied to plot the Nyquist graph and subsequent construction of the equivalent circuit model based on the neural model, exhibiting an appropriate cell signaling and an acceptable consistency between the components of the scaffold model with neural cell model. The ionic conductivity was also measured; exhibiting an enhanced ionic conductivity, but lower activation energy upon a temperature rise. Swelling behavior of the sample was measured and compared with pristine agarose; so that aniline oligomer due to its hydrophobic nature decreased water uptake. Dexamethasone release from the developed electroactive scaffold was assessed through voltage-responsive method. Proper voltage-dependent drug release could be rationally expected because of controllable action and elimination of chemically responsive materials. Altogether, these characteristics recommended the agarose/AP biopolymer for neural tissue engineering.
Sequential energy transfer followed by electron transfer in a BODIPY–bisstyrylBODIPY bound to C60 triad via a ‘two-point’ binding strategy
Authors: Shao Shuai , Thomas Michael B. , Park Kyu Hyung , Mahaffey Zoe , Kim Dongho , D’Souza Francis
Published: November 2017

Occurrence of step-by-step energy transfer followed by electron transfer leading a charge separated state in a self-assembled, wide-band capturing triad is demonstrated as a photosynthetic antenna reaction-centre mimic.
Pillararene-based fluorescent chemosensors: recent advances and perspectives
Authors: Chen Jin-Fa , Lin Qi , Zhang You-Ming , Yao Hong , Wei Tai-Bao
Published: November 2017

This feature article summarizes recent research in the pillararene-based fluorescent chemosensor field in terms of ion sensing, small molecule recognition, biomolecule detection, fluorescent supramolecular aggregates, and biomedical imaging.
Solvent-induced stable pseudopolymorphism of Au(i)–thiolate lamellar assemblies: a model system for understanding the environment acclimation of biomacromolecules
Authors: Hao Yajiao , Dai Chuying , Yu Lin , Li Song , Yu Yang , Ju Bo , Li Minjie , Zhang Sean Xiao-An
Published: November 2017

Two pseudopolymorphs are achieved in two solvents and exhibit high structure preservation but have distinct optical properties, morphology and thermal stability.
Valence orbitals and local bond dynamics around N atoms of histidine under X-ray irradiation
Authors: Eckert Sebastian , Niskanen Johannes , Jay Raphael M. , Miedema Piter S. , Fondell Mattis , Kennedy Brian , Quevedo Wilson , Iannuzzi Marcella , Föhlisch Alexander
Published: November 2017

Protonation-state dependent coupled electronic and nuclear responses of histidine to N 1s excitations are monitored using RIXS andab initioMD.
Synergism and aggregation behaviour in an aqueous binary mixture of cationic–zwitterionic surfactants: physico-chemical characterization with molecular simulation approach
Authors: Kanoje Bharatkumar , Padshala Shailesh , Parikh Jigisha , Sahoo Suban K , Kuperkar Ketan , Bahadur Pratap
Published: November 2017

A physico-chemical characterization and molecular dynamics study of mixed surfactant systems in aqueous solution.
3D time-dependent wave-packet approach in hyperspherical coordinates for the H + O2 reaction on the CHIPR and DMBE IV potential energy surfaces
Authors: Ghosh Sandip , Sharma Rahul , Adhikari Satrajit , Varandas António J. C.
Published: November 2017

3D wavepacket quantum dynamics methodology ICS calculation of H + O2 reaction on the CHIPR and DMBE IV PESs by J-shifting scheme.
Structure-dependent luminescence of tetra-(4-pyridylphenyl)ethylene: a first-principles study
Authors: Wu Ziye , Zhang Guozhen , Sharman Edward , Cui Peng , Jiang Jun
Published: November 2017

The relationship between the molecular structure and fluorescence properties of TPPE was investigated by TDDFT calculations.
X-ray crystal structure and doping mechanism of bimetallic nanocluster Au36−xCux(m-MBT)24(x= 1–3)
Authors: Rao Bo , Zhao Tong , Yang Sha , Chai Jinsong , Pan Yiting , Weng Shiyin , Yu Haizhu , Li Xiaowu , Zhu Manzhou
Published: November 2017

Combined experimental and theoretical methods have been used to explore the doping preference of Cu atoms in novel Au36−xCux(m-MBT)24(x= 1–3) nanoclusters.
Protein staining agents from low toxic platinum(ii) complexes with bidentate ligands
Authors: Zhou Yuyang , Jia Junli , Cai Leilei , Huang Yinhao
Published: December 2017

Low toxic platinum(ii) complexes with bidentate ligands have been developed as novel protein staining agents.
Indirect evidence for a NiIII–oxyl oxidant in the reaction of a NiII complex with peracid
Authors: Pirovano Paolo , Berry Abigail R. , Swart Marcel , McDonald Aidan R.
Published: November 2017

The oxidation of a NiII complex with m-CPBA is shown to promote the formation of a transient NiIII–O˙ species. Methine C–H bond activation in the supporting ligand by this species led to a benzoxazine product.
Ruthenium(ii) arene NSAID complexes: inhibition of cyclooxygenase and antiproliferative activity against cancer cell lines
Authors: Mandal Poulami , Kundu Bidyut Kumar , Vyas Komal , Sabu Vidya , Helen A. , Dhankhar Sandeep Singh , Nagaraja C. M. , Bhattacherjee Debojit , Bhabak Krishna Pada , Mukhopadhyay Suman
Published: November 2017

Ru(ii)–arene complexes with NSAIDs as co-ligands show marked antiproliferative activity against cancer cell lines along with cyclooxygenase inhibition properties.
Synthesis of M-UiO-66 (M = Zr, Ce or Hf) employing 2,5-pyridinedicarboxylic acid as a linker: defect chemistry, framework hydrophilisation and sorption properties
Authors: Waitschat S. , Fröhlich D. , Reinsch H. , Terraschke H. , Lomachenko K. A. , Lamberti C. , Kummer H. , Helling T. , Baumgartner M. , Henninger S. , Stock N.
Published: November 2017

MOFs of general composition [M6(OH)4(O)4(PDC)6−x(Cl)2x(H2O)2x] with M = Zr, Ce, Hf; and 0 ≤ x ≤ 2 were obtained and characterised in detail.
Unprecedented NH2-MIL-101(Al)/n-Bu4NBr system as solvent-free heterogeneous catalyst for efficient synthesis of cyclic carbonatesviaCO2cycloaddition
Authors: Senthilkumar S. , Maru Minaxi S. , Somani R. S. , Bajaj H. C. , Neogi Subhadip
Published: November 2017

NH2-MIL-101(Al)/n-Bu4NBr is an excellent solvent-free catalyst for CO2cycloaddition to epoxides that highlights the benefits of micro–mesoporous system containing both acidic and basic functionalities.
Silica@layered double hydroxide core–shell hybrid materials
Authors: Kwok Wing L. J. , Crivoi Dana-Georgiana , Chen Chunping , Buffet Jean-Charles , O'Hare Dermot
Published: November 2017

Fine crystallisation of layered double hydroxide on silica nanospheres may be achieved by controlling reaction stirring speed and rate of metal salt addition.
A core–shell structured LiNi0.5Mn1.5O4@LiCoO2 cathode material with superior rate capability and cycling performance
Authors: Deng Yunlong , Mou Jirong , He Lihua , Xie Fengyu , Zheng Qiaoji , Xu Chenggang , Lin Dunmin
Published: November 2017

A core–shell structured LiNi0.5Mn1.5O4@LiCoO2 cathode material has been successfully synthesized by the combination of sol–gel and solid state methods.
A pair of polymorphous metal–organic frameworks based on an angular diisophthalate linker: synthesis, characterization and gas adsorption properties
Authors: Chen Fengli , Bai Dongjie , Wang Yao , He Minghui , Gao Xiaoxia , He Yabing
Published: November 2017

A pair of polymorphous MOFs derived from a bent diisophthalate ligand were synthesized by modulating solvothermal conditions, exhibiting comparable gas adsorption properties with respect to C2H2, CO2 and CH4.
Aggregates of octenylsuccinate oat β-glucan as novel capsules to stabilize curcumin over food processing, storage and digestive fluids and to enhance its bioavailability
Authors: Liu J. , Lei L. , Ye F. , Zhou Y. , Younis Heba G. R. , Zhao G.
Published: November 2017

Aggregates of amphipathic polysaccharides in aqueous media could encapsulate and stabilize hydrophobic polyphenols and favor their bioactivity.
Milk protein production by a more environmentally sustainable process: bipolar membrane electrodialysis coupled with ultrafiltration
Authors: Mikhaylin Sergey , Patouillard Laure , Margni Manuele , Bazinet Laurent
Published: November 2017

Bipolar membrane electrodialysis coupled with ultrafiltration is an environmentally sustainable technology for milk protein production.
Stable and reusable nanoscale Fe2O3-catalyzed aerobic oxidation process for the selective synthesis of nitriles and primary amides
Authors: Murugesan Kathiravan , Senthamarai Thirusangumurugan , Sohail Manzar , Sharif Muhammad , Kalevaru Narayana V. , Jagadeesh Rajenahally V.
Published: November 2017

Nanoscale Fe2O3-catalyzed environmentally benign synthesis of nitriles and amides has been performed from easily accessible aldehydes and ammonia using O2.
Wearable sensors: modalities, challenges, and prospects
Authors: Heikenfeld J. , Jajack A. , Rogers J. , Gutruf P. , Tian L. , Pan T. , Li R. , Khine M. , Kim J. , Wang J. , Kim J.
Published: November 2017

Non-invasive wearable sensing technology extracts mechanical, electrical, optical, and chemical information from the human body.
Evaluation of Cu(i) binding to the E2 domain of the amyloid precursor protein – a lesson in quantification of metal binding to proteinsvialigand competition
Authors: Young Tessa R. , Wedd Anthony G. , Xiao Zhiguang
Published: November 2017

APP E2 forms stable Cu(i)-mediated ternary complexes with several competing ligands, but not upon addition of heparin. This allows a systematic review of general conditions for quantification of metal–protein affinity and new insights into the physiological functions of APP.
Highly sensitive and selective non-enzymatic monosaccharide and disaccharide sugar sensing based on carbon paste electrodes modified with perforated NiO nanosheets
Authors: Ibrahim Ahmed A. , Sodki El Mehdi , Umar Ahmad , Amine Aziz , Kumar Rajesh , Al-Assiri M. S. , Al-Salami A. E. , Baskoutas S.
Published: November 2017

Fabrication and characterization of enzyme-free electrochemical sensor for the sensing of monosaccharide and disaccharide sugars based on perforated NiO nanosheets (NSs).
Polyol asserted hydrothermal synthesis of SnO2 nanoparticles for the fast adsorption and photocatalytic degradation of methylene blue cationic dye
Authors: Rani Barkha , Punniyakoti Sathyanarayanan , Sahu Niroj Kumar
Published: November 2017

Schematic representation of the photocatalytic degradation of MB dye using the SnO2 nanocatalyst.
Theoretical and experimental characterization of 1,4-N⋯S σ-hole intramolecular interactions in bioactive N-acylhydrazone derivatives
Authors: Pinheiro Pedro de Sena Murteira , Rodrigues Daniel Alencar , Alves Marina Amaral , Tinoco Luzineide Wanderley , Ferreira Glaucio Braga , de Sant’Anna Carlos Mauricio Rabello , Fraga Carlos Alberto Manssour
Published: November 2017

Sigma-hole (σ-hole) bonds are interactions that are gaining special attention in medicinal chemistry.
One-pot synthesis of bimetallic PdCu nanoframes as an efficient catalyst for the methanol oxidation reaction
Authors: Li Chao , Eid Kamel , Wang Hongjing , Deng Yaoyao , Lu Shuanglong , Li Xiaonian , Wang Liang , Gu Hongwei
Published: November 2017

A one-pot method is developed for the synthesis of PdCu nanoframes which are an active catalyst for the methanol oxidation reaction.
Boosting the efficiency of inverted quantum dot light-emitting diodes by balancing charge densities and suppressing exciton quenching through band alignment
Authors: Pan Jiangyong , Wei Changting , Wang Lixi , Zhuang Jinyong , Huang Qianqian , Su Wenming , Cui Zheng , Nathan Arokia , Lei Wei , Chen Jing
Published: November 2017

This work demonstrates high performance inverted full-color QLEDs by controlling electron transport and preventing exciton quenching.
In situ carbon encapsulation of vertical MoS2 arrays with SnO2 for durable high rate lithium storage: dominant pseudocapacitive behavior
Authors: Li Mengjiao , Deng Qinglin , Wang Junyong , Jiang Kai , Hu Zhigao , Chu Junhao
Published: November 2017

An in situ polymerization–carbonization process for novel carbon-sealed vertical MoS2–SnO2 anchored on graphene aerogel (C@MoS2–SnO2@Gr) has enabled excellent rate performance and durability as the lithium ion batteries anode.
A novel cell-scale bio-nanogenerator based on electron–ion interaction for fast light power conversion
Authors: Li Yu-Tao , Tian He , Zhao Hai-Ming , Jian Mu-Qiang , Lv Yu-Jia , Tian Ye , Wang Qian , Yang Yi , Xiang Yan , Zhang Yingying , Ren Tian-Ling
Published: November 2017

A cell-scale biohybrid bio-nanogenerator based on bacteriorhodopsin and aligned-long-CNTs with electron–ion interaction for fast light power conversion is demonstrated.
Correction: Copper(ii) gluconate (a non-toxic food supplement/dietary aid) as a precursor catalyst for effective photo-induced living radical polymerisation of acrylates
Authors: Nikolaou Vasiliki , Anastasaki Athina , Alsubaie Fehaid , Simula Alexandre , Fox David J. , Haddleton David M.
Published: November 2017

Correction for ‘Copper(ii) gluconate (a non-toxic food supplement/dietary aid) as a precursor catalyst for effective photo-induced living radical polymerisation of acrylates’ by Vasiliki Nikolaou et al., Polym. Chem., 2015, 6, 3581–3585.
Correction: Synthesis, structure and optical performance of red-emitting phosphor Ba5AlF13:Mn4+
Authors: Qin Lin , Cai Peiqing , Chen Cuili , Wang Jing , Jin Seo Hyo
Published: November 2017

Correction for ‘Synthesis, structure and optical performance of red-emitting phosphor Ba5AlF13:Mn4+’ by Lin Qin et al., RSC Adv., 2017, 7, 49473–49479.
Design of DNA nanostructure-based interfacial probes for the electrochemical detection of nucleic acids directly in whole blood
Authors: Li Chao , Hu Xiaolu , Lu Jianyang , Mao Xiaoxia , Xiang Yang , Shu Yongqian , Li Genxi
Published: November 2017

A novel DNA nanostructure-based electrochemical (E-nanoDNA) sensor is proposed for one-step reagentless detection of biomolecules in flowing samples.
Bismuth ferrite-based photoactive materials for the photoelectrochemical detection of disease biomarkers coupled with multifunctional mesoporous silica nanoparticles
Authors: Zhou Qian , Lin Youxiu , Lu Minghua , Tang Dianping
Published: November 2017

A photoelectrochemical sensing system was designed to detect CEA on bismuth ferrite photoactive materials with target-controlled glucose release from mesoporous silica nanoparticles.
Cationic gas-filled microbubbles for ultrasound-based nucleic acids delivery
Authors: Delalande Anthony , Bastié Colette , Pigeon Lucie , Manta Simona , Lebertre Matthias , Mignet Nathalie , Midoux Patrick , Pichon Chantal
Published: November 2017

The use of ultrasound has gained great interest for nucleic acids delivery. Ultrasound can reach deep tissues in non-invasive manner. The process of sonoporation is based on the use of low-frequency ultrasound combined with gas-filled microbubbles (MBs) allowing an improved delivery of molecules including nucleic acids in the insonified tissue. For in vivo gene transfer, the engineering of cationic MBs is essential for creating strong electrostatic interactions between MBs and nucleic acids leading to their protection against nucleases degradation and high concentration within the target tissue. Cationic MBs must be stable enough to withstand nucleic acids interaction, have a good size distribution for in vivo administration, and enough acoustic activity to be detected by echography. This review aims to summarize the basic principles of ultrasound-based delivery and new knowledge acquired in these recent years about this method. A focus is made on gene delivery by discussing reported studies made with cationic MBs including ours. They have the ability for efficient delivery of plasmid DNA (pDNA), mRNA or siRNA. Last, we discuss about the key challenges that have to be faced for a fine use of this delivery system.
Cooperative output regulation of heterogeneous multi‐agent systems with a leader of bounded inputs
Authors: Yuan Chengzhi , He Haibo
Published: November 2017

In this study, the cooperative output regulation problem for heterogeneous multi‐agent systems is addressed by considering a leader dynamics subject to bounded (possibly non‐zero, persistent, and time varying) inputs. Compared to many existing works with a leader of zero input, using such a leader dynamics will facilitate realisation of more diverse and sophisticated tracking trajectories for cooperative output regulation control. However, it also poses a challenge to pursue exact output regulation performance. To this end, a new two‐layer hierarchical design framework is proposed. This framework consists of an upper‐layer cooperative estimator for estimating the leader's state information in finite time, and a lower‐layer distributed output regulator to achieve exact output regulation performance. Both finite‐time estimation and asymptotic output regulation performance are analysed using the Lyapunov function method, and the associated solvability conditions are established as a set of linear matrix inequalities plus linear matrix equations. Simulation studies are also included to demonstrate the effectiveness of the proposed approach.
Cosmic-rays, gas, and dust in nearby anticentre clouds
Authors: Remy Q. , Grenier I. A. , Marshall D. J. , Casandjian J. M.
Published: November 2017

Aim. H I 21-cm and 12CO 2.6-mm line emissions trace the atomic and molecular gas phases, respectively, but they miss most of the opaque H I and diffuse H2 present in the dark neutral medium (DNM) at the transition between the H I-bright and CO-bright regions. Jointly probing H I, CO, and DNM gas, we aim to constrain the threshold of the H I–H2 transition in visual extinction, AV, and in total hydrogen column densities, NHtot. We also aim to measure gas mass fractions in the different phases and to test their relation to cloud properties. Methods. We have used dust optical depth measurements at 353 GHz, γ-ray maps at GeV energies, and H I and CO line data to trace the gas column densities and map the DNM in nearby clouds toward the Galactic anticentre and Chamaeleon regions. We have selected a subset of 15 individual clouds, from diffuse to star-forming structures, in order to study the different phases across each cloud and to probe changes from cloud to cloud. Results. The atomic fraction of the total hydrogen column density is observed to decrease in the (0.6–1) × 1021 cm−2 range in NHtot (AV ≈ 0.4 mag) because of the formation of H2 molecules. The onset of detectable CO intensities varies by only a factor of 4 from cloud to cloud, between 0.6 × 1021 cm−2 and 2.5 × 1021 cm−2 in total gas column density. We observe larger H2 column densities than linearly inferred from the CO intensities at AV > 3 mag because of the large CO optical thickness; the additional H2 mass in this regime represents on average 20% of the CO-inferred molecular mass. In the DNM envelopes, we find that the fraction of diffuse CO-dark H2 in the molecular column densities decreases with increasing AV in a cloud. For a half molecular DNM, the fraction decreases from more than 80% at 0.4 mag to less than 20% beyond 2 mag. In mass, the DNM fraction varies with the cloud properties. Clouds with low peak CO intensities exhibit large CO-dark H2 fractions in molecular mass, in particular the diffuse clouds lying at high altitude above the Galactic plane. The mass present in the DNM envelopes appears to scale with the molecular mass seen in CO as MHDNM = 62 ± 7 MH2CO0.51 ± 0.02 across two decades in mass. Conclusions. The phase transitions in these clouds show both common trends and environmental differences. These findings will help support the theoretical modelling of H2 formation and the precise tracing of H2 in the interstellar medium.
ALMA continuum observations of the protoplanetary disk AS 209
Authors: Fedele D. , Tazzari M. , Booth R. , Testi L. , Clarke C. J. , Pascucci I. , Kospal A. , Semenov D. , Bruderer S. , Henning Th. , Teague R.
Published: November 2017

This paper presents new high angular resolution ALMA 1.3 mm dust continuum observations of the protoplanetary system AS 209 in the Ophiuchus star forming region. The dust continuum emission is characterized by a main central core and two prominent rings at r = 75 au and r = 130 au intervaled by two gaps at r = 62 au and r = 103 au. The two gaps have different widths and depths, with the inner one being narrower and shallower. We determined the surface density of the millimeter dust grains using the 3D radiative transfer disk code DALI. According to our fiducial model the inner gap is partially filled with millimeter grains while the outer gap is largely devoid of dust. The inferred surface density is compared to 3D hydrodynamical simulations (FARGO-3D) of planet-disk interaction. The outer dust gap is consistent with the presence of a giant planet (Mplanet ~ 0.7 MSaturn); the planet is responsible for the gap opening and for the pile-up of dust at the outer edge of the planet orbit. The simulations also show that the same planet could be the origin of the inner gap at r = 62 au. The relative position of the two dust gaps is close to the 2:1 resonance and we have investigated the possibility of a second planet inside the inner gap. The resulting surface density (including location, width and depth of the two dust gaps) are in agreement with the observations. The properties of the inner gap pose a strong constraint to the mass of the inner planet (Mplanet < 0.1 MJ). In both scenarios (single or pair of planets), the hydrodynamical simulations suggest a very low disk viscosity (α < 10−4). Given the young age of the system (0.5–1 Myr), this result implies that the formation of giant planets occurs on a timescale of ≲1 Myr.
Analysis on the stability of chromium in mineral phases in stainless steel slag
Authors: Cao Long-hu , Liu Cheng-jun , Zhao Qing , Jiang Mao-fa
Published: November 2017

Stainless steel slag from high alloy steel is hardly used in the construction industry. The chromium leaching in unstable phase is the limiting factor for the application in the slag. The aim of this study is to investigate the stability of mineral phases in stainless steel slag. In this work, the mineral phases were firstly confirmed through experimental results by SEM-EDS and XRD. Thermodynamic calculation and leaching test were adopted to characterize the theoretical stability of mineral phases in aqueous solution. The results showed that the main phases in the stainless steel slag were spinel, melilite [solid solution of gehlenite (Ca2Al2SiO7) and akermanite (Ca2MgSi2O7)], dicalcium silicate, merwinite and periclase phases. It can be concluded that the minerals behave differently when dissolving in aqueous solution and the dissolution of dicalcium silicate (Ca2SiO4), merwinite (Ca3MgSi2O8), akermanite (Ca2MgSi2O7) and periclase phase could be generally higher, especially at lower pH values. In addition, the solubility of chromium in the spinel phase is considered low. The leaching test demonstrated that the formation of spinel phase can limit the leaching of chromium and the chromium existing in the silicate and periclase phases can facilitate the chromium leaching.