bluuebunny/crossref_metadata_2025 huggingface dataset:
Physical Fitness and Resting EEG in Children With Attention Deficit Hyperactivity Disorder
Authors: Huang Ching-Wen , Huang Chung-Ju , Hung Chiao-Ling , Shih Chia-Hao , Hung Tsung-Min
Published: January 2015

Children with attention deficit hyperactivity disorder (ADHD) are characterized by a deviant pattern of brain oscillations during resting state, particularly elevated theta power and increased theta/alpha and theta/beta ratios that are related to cognitive functioning. Physical fitness has been found beneficial to cognitive performance in a wide age population. The purpose of the present study was to investigate the relationship between physical fitness and resting-state electroencephalographic (EEG) oscillations in children with ADHD. EEG was recorded during eyes-open resting for 28 children (23 boys and 5 girls, 8.66 ± 1.10 years) with ADHD, and a battery of physical fitness assessments including flexibility, muscular endurance, power, and agility tests were administered. The results indicated that ADHD children with higher power fitness exhibited a smaller theta/alpha ratio than those with lower power fitness. These findings suggest that power fitness may be associated with improved attentional self-control in children with ADHD.
The Effects of Vigilance and Visual Distraction on the P50 Mid-Latency Auditory Evoked Potential
Authors: Yadon Carly A. , Kisley Michael A. , Davalos Deana B.
Published: January 2015

Sensory gating function has been investigated through measurement of the P50 evoked potential. However, the susceptibility of auditory P50 sensory gating to attentional modulation remains unclear. We sought to investigate the effects of vigilance (sustaining alertness across multiple recording blocks) and visual distraction (watching a muted movie versus a static fixation cross). We specifically chose a movie as the distracting stimulus because investigators sometimes show muted movies during P50 paradigms and the effects of this method were previously unknown. We recorded evoked potentials in a standard paired-click paradigm from groups watching a movie or static fixation cross; both groups completed four identical blocks of recording. Ratings of fatigue were recorded throughout the experiment. P50 and N100 amplitude showed signs of habituation, although N100’s amplitude reduction was more prominent than P50. P50 suppression did not change over the course of the recording session, despite increasing fatigue ratings. P50 suppression was significantly stronger for the participants who watched a movie during the recording. When comparing P50 gating results across studies, care should be taken to consider differing methodologies.
Angelman syndrome-associated ubiquitin ligase UBE3A/E6AP mutants interfere with the proteolytic activity of the proteasome
Authors: Tomaić V , Banks L
Published: January 2015

Angelman syndrome, a severe neurodevelopmental disease, occurs primarily due to genetic defects, which cause lack of expression or mutations in the wild-type E6AP/UBE3A protein. A proportion of the Angelman syndrome patients bear UBE3A point mutations, which do not interfere with the expression of the full-length protein, however, these individuals still develop physiological conditions of the disease. Interestingly, most of these mutations are catalytically defective, thereby indicating the importance of UBE3A enzymatic activity role in the Angelman syndrome pathology. In this study, we show that Angelman syndrome-associated mutants interact strongly with the proteasome via the S5a proteasomal subunit, resulting in an overall inhibitory effect on the proteolytic activity of the proteasome. Our results suggest that mutated catalytically inactive forms of UBE3A may cause defects in overall proteasome function, which could have an important role in the Angelman syndrome pathology.
MicroRNA-141 inhibits tumor growth and metastasis in gastric cancer by directly targeting transcriptional co-activator with PDZ-binding motif, TAZ
Authors: Zuo Q-F , Zhang R , Li B-S , Zhao Y-L , Zhuang Y , Yu T , Gong L , Li S , Xiao B , Zou Q-M
Published: January 2015

Gastric cancer (GC) is a biologically heterogeneous disease accompanying various genetic and epigenetic alterations, and the molecular mechanisms underlying this disease are complex and not completely understood. Increasing evidence shows that abnormal microRNA (miRNA) expression is involved in GC tumorigenesis, but the role of specific miRNAs involved in this disease remains elusive. MiR-141 was previously reported to act as tumor suppressors or oncogenes in diverse cancers. However, their accurate expression, function and mechanism in GC are largely unclear. Here we found that the expression of miR-141 was significantly reduced in GC compared with paired adjacent normal tissues and was significantly correlated with a more aggressive phenotype of GC in patients. Ectopic expression of miR-141 mimics in GC cell lines resulted in reduced proliferation, invasion and migration, and inhibition of miR-141 in GC cell lines promoted cell proliferation, invasion and migration in vitro. We further demonstrated that miR-141 acted as tumor suppressors through targeting transcriptional co-activator with PDZ-binding motif (TAZ) in GC. Moreover, the inverse relationship between miR-141 and its target was verified in patients and xenograft mice. Finally, overexpression of miR-141 suppressed tumor growth and pulmonary metastasis in nude mice. Take together, we identified that miR-141 is a potent tumor suppressor in the stomach, and its growth inhibitory effects are, in part, mediated through its downstream target gene, TAZ. These findings implied that miR-141 might be employed as novel prognostic markers and therapeutic targets of GC.
CtBP maintains cancer cell growth and metabolic homeostasis via regulating SIRT4
Authors: Wang L , Zhou H , Wang Y , Cui G , Di L-j
Published: January 2015

Cancer cells rely on glycolysis to maintain high levels of anabolism. However, the metabolism of glucose via glycolysis in cancer cells is frequently incomplete and results in the accumulation of acidic metabolites such as pyruvate and lactate. Thus, the cells have to develop strategies to alleviate the intracellular acidification and maintain the pH stability. We report here that glutamine consumption by cancer cells has an important role in releasing the acidification pressure associated with cancer cell growth. We found that the ammonia produced during glutaminolysis, a dominant glutamine metabolism pathway, is critical to resist the cytoplasmic acidification brought by the incomplete glycolysis. In addition, C-terminal-binding protein (CtBP) was found to have an essential role in promoting glutaminolysis by directly repressing the expression of SIRT4, a repressor of glutaminolysis by enzymatically modifying glutamate dehydrogenase in mitochondria, in cancer cells. The loss of CtBP in cancer cells resulted in the increased apoptosis due to intracellular acidification and the ablation of cancer cell metabolic homeostasis represented by decreased glutamine consumption, oxidative phosphorylation and ATP synthesis. Importantly, the immunohistochemistry staining showed that there was excessive expression of CtBP in tumor samples from breast cancer patients compared with surrounding non-tumor tissues, whereas SIRT4 expression in tumor tissues was abolished compared with the non-tumor tissues, suggesting CtBP-repressed SIRT4 expression contributes to the tumor growth. Therefore, our data suggest that the synergistically metabolism of glucose and glutamine in cancer cells contributes to both pH homeostasis and cell growth. At last, application of CtBP inhibitor induced the acidification and apoptosis of breast cancer cells and inhibited glutaminolysis in engrafted tumors, suggesting that CtBP can be potential therapeutic target of cancer treatment.
ROW1 maintains quiescent centre identity by confining WOX5 expression to specific cells
Authors: Zhang Yuzhou , Jiao Yue , Liu Zhaohui , Zhu Yu-Xian
Published: January 2015

The quiescent centre (QC) in the Arabidopsis root apical meristem is essential for stem cell organization. Here we show that the loss of REPRESSOR OF WUSCHEL1 (ROW1), a PHD domain-containing protein, leads to QC failure, defects in cell differentiation and ectopic expression of WUSCHEL-RELATED HOMEOBOX 5 (WOX5) in cells that normally express ROW1. The wox5-1/row1-3 double mutants show similar phenotypes to wox5-1 indicating that WOX5 is epistatic to ROW1. ROW1 specifically binds trimethylated histone H3 lysine 4 (H3K4me3) in the WOX5 promoter region to repress its transcription. QC expression of ROW1 results in a wox5-1-like phenotype with undetectable WOX5 transcripts. We propose that ROW1 is essential for QC maintenance and for stem cell niche development through the repression of WOX5 in the proximal meristem.
Responses of plant nutrient resorption to phosphorus addition in freshwater marsh of Northeast China
Authors: Mao Rong , Zeng De-Hui , Zhang Xin-Hou , Song Chang-Chun
Published: January 2015

Anthropogenic activities have increased phosphorus (P) inputs to most aquatic and terrestrial ecosystems. However, the relationship between plant nutrient resorption and P availability is still unclear and much less is known about the underlying mechanisms. Here, we used a multi-level P addition experiment (0, 1.2, 4.8 and 9.6 g P m−2 year−1) to assess the effect of P enrichment on nutrient resorption at plant organ, species and community levels in a freshwater marsh of Northeast China. The response of nutrient resorption to P addition generally did not vary with addition rates. Moreover, nutrient resorption exhibited similar responses to P addition across the three hierarchical levels. Specifically, P addition decreased nitrogen (N) resorption proficiency, P resorption efficiency and proficiency, but did not impact N resorption efficiency. In addition, P resorption efficiency and proficiency were linearly related to the ratio of inorganic P to organic P and organic P fraction in mature plant organs, respectively. Our findings suggest that the allocation pattern of plant P between inorganic and organic P fractions is an underlying mechanism controlling P resorption processes and that P enrichment could strongly influence plant-mediated biogeochemical cycles through altered nutrient resorption in the freshwater wetlands of Northeast China.
Serotonin Deficiency Exacerbates Acetaminophen-Induced Liver Toxicity In Mice
Authors: Zhang Jingyao , Song Sidong , Pang Qing , Zhang Ruiyao , Zhou Lei , Liu Sushun , Meng Fandi , Wu Qifei , Liu Chang
Published: January 2015

Acetaminophen (APAP) overdose is a major cause of acute liver failure. Peripheral 5-hydroxytryptamine (serotonin, 5-HT) is a cytoprotective neurotransmitter which is also involved in the hepatic physiological and pathological process. This study seeks to investigate the mechanisms involved in APAP-induced hepatotoxicity, as well as the role of 5-HT in the liver's response to APAP toxicity. We induced APAP hepatotoxicity in mice either sufficient of serotonin (wild-type mice and TPH1-/- plus 5- Hydroxytryptophan (5-HTP)) or lacking peripheral serotonin (Tph1-/- and wild-type mice plus p-chlorophenylalanine (PCPA)).Mice with sufficient 5-HT exposed to acetaminophen have a significantly lower mortality rate and a better outcome compared with mice deficient of 5-HT. This difference is at least partially attributable to a decreased level of inflammation, oxidative stress and endoplasmic reticulum (ER) stress, Glutathione (GSH) depletion, peroxynitrite formation, hepatocyte apoptosis, elevated hepatocyte proliferation, activation of 5-HT2B receptor, less activated c-Jun NH2-terminal kinase (JNK) and hypoxia-inducible factor (HIF)-1α in the mice sufficient of 5-HT versus mice deficient of 5-HT. We thus propose a physiological function of serotonin that serotonin could ameliorate APAP-induced liver injury mainly through inhibiting hepatocyte apoptosis ER stress and promoting liver regeneration.
More about the doubling degeneracy operators associated with Majorana fermions and Yang-Baxter equation
Authors: Yu Li-Wei , Ge Mo-Lin
Published: January 2015

A new realization of doubling degeneracy based on emergent Majorana operator Γ presented by Lee-Wilczek has been made. The Hamiltonian can be obtained through the new type of solution of Yang-Baxter equation, i.e. "Equation missing" -matrix. For 2-body interaction, "Equation missing" gives the “superconducting” chain that is the same as 1D Kitaev chain model. The 3-body Hamiltonian commuting with Γ is derived by 3-body "Equation missing" -matrix, we thus show that the essence of the doubling degeneracy is due to "Equation missing". We also show that the extended Γ′-operator is an invariant of braid group BN for odd N. Moreover, with the extended Γ′-operator, we construct the high dimensional matrix representation of solution to Yang-Baxter equation and find its application in constructing 2N-qubit Greenberger-Horne-Zeilinger state for odd N.
Subperiosteal Transmission Of Intra-Articular Pressure Between Articulated And Stationary Joints
Authors: Pitkin Mark , Muppavarapu Raghuveer , Cassidy Charles , Pitkin Emil
Published: January 2015

Hydrostatic pressures can be transmitted between synovial capsules. In each of ten rabbits, we simultaneously measured pressure in two joints, one of which was passively ranged and the other of which was kept stationary. The intra-articular pressure inside the stationary joint changed every time its companion joint was ranged. But the pressure in the stationary joint did not change when the periosteum was transected above the ranged joint. This phenomenon was observed in all four animals that served as their own controls. The study suggests that the intra-articular pressure was transmitted through the space between the periosteum and the bone surface. Alternative explanations, like measurements of venous blood pressure, did not show correlation with hydrostatic pressure changes in the joints. The Floating Skeleton concept suggests a biomechanical rationale for this newly observed phenomenon: that there exists a subperiosteal hydrostatic connection of synovial joints and that this “net” distributes excess pressures among joints through the periosteal sheath to sustain the integrity of the joint contacting surfaces over a lifetime.
The secreted factor Ag1 missing in higher vertebrates regulates fins regeneration in Danio rerio
Authors: Ivanova Anastasiya S. , Shandarin Igor N. , Ermakova Galina V. , Minin Andrey A. , Tereshina Maria B. , Zaraisky Andrey G.
Published: January 2015

Agr family includes three groups of genes, Ag1, Agr2 and Agr3, which encode the thioredoxin domain-containing secreted proteins and have been shown recently to participate in regeneration of the amputated body appendages in amphibians. By contrast, higher vertebrates have only Agr2 and Agr3, but lack Ag1 and have low ability to regenerate the body appendages. Thus, one may hypothesize that loss of Ag1 in evolution could be an important event that led to a decline of the regenerative capacity in higher vertebrates. To test this, we have studied now the expression and role of Ag1 in the regeneration of fins of a representative of another large group of lower vertebrates, the fish Danio rerio. As a result, we have demonstrated that amputation of the Danio fins, like amputation of the body appendages in amphibians, elicits an increase of Ag1 expression in cells of the stump. Furthermore, down-regulation of DAg1 by injections of Vivo-morpholino antisense oligonucleotides resulted in a retardation of the fin regeneration. These data are in a good agreement with the assumption that the loss of Ag1 in higher vertebrates ancestors could lead to the reduction of the regenerative capacity in their modern descendants.
Testing and validating electroanalytical simulations
Authors: Kätelhön Enno , Compton Richard G.
Published: January 2015

This tutorial guides through rigorous testing processes of electrochemical simulations with regard to applications in cyclic voltammetry.
Thermoelectric lab-on-a-chip ELISA
Authors: Nestorova Gergana G. , Kopparthy Varun L. , Crews Niel D. , Guilbeau Eric J.
Published: January 2015

Thermoelectric lab-on-a-chip ELISA is a novel method performing immunoassays by measuring the heat of the enzymatic reaction between enzyme-linked detection antibody and a substrate using a thin-film thermopile.
Quantitative and chemical fingerprint analysis for quality evaluation of the dried bark of wild Phellodendron amurense Rupr. based on HPLC-DAD-MS combined with chemometrics methods
Authors: Zhang Yang , Zhang Zhipeng , Liu Haitao , Zhang Bengang , Liao Yonghong , Zhang Zhao
Published: January 2015

A fast and validated multi-component analytical method based on extraction by ultrasonication, detection by HPLC-DAD-MS and analysis by chemometrics tools was developed.
Indium triflate-catalyzed stereoselective tandem intramolecular conjugate addition of secondary amines to α,β-bisenones
Authors: Thirupathaiah Bodakuntla , Seo SungYong
Published: January 2015

We report an indium triflate-catalyzed stereoselective intramolecular tandem conjugate addition of secondary amines to α,β-bisenones to afford a 1,2,3-trisubstituted six-membered ring bearing diketone substituents in good to excellent yields at room temperature.
A nonheme manganese(iv)–oxo species generated in photocatalytic reaction using water as an oxygen source
Authors: Wu Xiujuan , Yang Xiaonan , Lee Yong-Min , Nam Wonwoo , Sun Licheng
Published: January 2015

A nonheme manganese(iv)–oxo complex was generated in the photocatalytic reaction of [MnII(BQCN)]2+ with [RuII(bpy)3]Cl2, [CoIII(NH3)5Cl]Cl2, and water as an oxygen source.
Self-catalysis in thermal hysteresis during random-coil to helix-dimer transition of the sulfonamidohelicene tetramer
Authors: Shigeno Masanori , Kushida Yo , Yamaguchi Masahiko
Published: January 2015

The sulfonamidohelicene tetramer changes its structure between a random-coil and a helix-dimer, by which molecular thermal hysteresis appears.
Hydrothermal synthesis of porous rh-In2O3nanostructures with visible-light-driven photocatalytic degradation of tetracycline
Authors: Wu Miaomiao , Wang Chao , Zhao Yong , Xiao Lisong , Zhang Chao , Yu Xiaoqiang , Luo Bifu , Hu Bo , Fan Weiqiang , Shi Weidong
Published: January 2015

In this paper, well-defined 3D flower-like porous rhombohedral In2O3(rh-In2O3) nanostructures were successfully synthesizedviathe hydrothermal method combined with post-thermal treatments.
Hofmeister effect of salt mixtures on thermo-responsive poly(propylene oxide)
Authors: Zajforoushan Moghaddam Saeed , Thormann Esben
Published: January 2015

The Hofmeister effect of salt mixtures is strongly dependent on composition of the mixture as well as absolute and relative concentration of the salts.
Size-dependent CO and propylene oxidation activities of platinum nanoparticles on the monolithic Pt/TiO2–YOxdiesel oxidation catalyst under simulative diesel exhaust conditions
Authors: Yang Zhengzheng , Li Jun , Zhang Hailong , Yang Yi , Gong Maochu , Chen Yaoqiang
Published: January 2015

Small platinum oxide particles are beneficial for forming Pt0active species under diesel exhaust conditions, hence showing better DOC reactivity.
Effect of mixing, concentration and temperature on the formation of mesostructured solutions and their role in the nucleation of dl-valine crystals
Authors: Jawor-Baczynska Anna , Moore Barry D. , Sefcik Jan
Published: January 2015

We report investigations on the formation of mesostructured solutions in dl-valine–water–2-propanol mixtures, and the crystallization of dl-valine from these solutions. Mesostructured liquid phases, similar to those previously observed in aqueous solutions of glycine and dl-alanine, were observed using Dynamic Light Scattering and Brownian microscopy, in both undersaturated and supersaturated solutions below a certain transition temperature. Careful experimentation was used to demonstrate that the optically clear mesostructured liquid phase, comprising colloidal mesoscale clusters dispersed within bulk solution, is thermodynamically stable and present in equilibrium with the solid phase at saturation conditions. Solutions prepared by slow cooling contained mesoscale clusters with a narrow size distribution and a mean hydrodynamic diameter of around 200 nm. Solutions of identical composition prepared by rapid isothermal mixing of valine aqueous solutions with 2-propanol contained mesoscale clusters which were significantly larger than those observed in slowly cooled solutions. The presence of larger mesoscale clusters was found to correspond to faster nucleation. Observed induction times were strongly dependent on the rapid initial mixing step, although solutions were left undisturbed afterwards and the induction times observed were up to two orders of magnitude longer than the initial mixing period. We propose that mesoscale clusters above a certain critical size are likely to be the location of productive nucleation events.
Towards the sustainable production of pyridines via thermo-catalytic conversion of glycerol with ammonia over zeolite catalysts
Authors: Xu Lujiang , Han Zheng , Yao Qian , Deng Jin , Zhang Ying , Fu Yao , Guo Qingxiang
Published: January 2015

Thermo-catalytic conversion of renewable glycerol with ammonia over HZSM-5 for producing pyridines with high yield and high selectivity.
Palaeolithic paint palettes used at La Garma Cave (Cantabria, Spain) investigated by means of combined in situ and synchrotron X-ray analytical methods
Authors: Gay M. , Alfeld M. , Menu M. , Laval E. , Arias P. , Ontañón R. , Reiche I.
Published: January 2015

This rock art study of La Garma provides new and original insights into the characterisation of the prehistoric paint palette.
Silica nanonetwork confined in nitrogen-doped ordered mesoporous carbon framework for high-performance lithium-ion battery anodes
Authors: Liang Yeru , Cai Lifeng , Chen Luyi , Lin Xidong , Fu Ruowen , Zhang Mingqiu , Wu Dingcai
Published: January 2015

A nitrogen-doped ordered mesoporous carbon/silica nanocomposite with a uniform carbon/silica interface structure was fabricated and demonstrated an impressive lithium ion storage capacity.
Synthesis of ordered mesoporous crystalline CuS and Ag2S materials via cation exchange reaction
Authors: Wang Jun , Xu Weiming , Bao Haifeng , Shi Yifeng
Published: January 2015

Cation exchange reaction is a strong tool for the synthesis of new ionic nanomaterials.
Annexin-V/quantum dot probes for multimodal apoptosis monitoring in living cells: improving bioanalysis using electrochemistry
Authors: Montón Helena , Parolo Claudio , Aranda-Ramos Antonio , Merkoçi Arben , Nogués Carme
Published: January 2015

A novel-electrochemical Annexin-V–QD conjugate, which can be also used as a classical-optical label, is applied for apoptosis detection in THP-1 cell cultures. The electrochemical detection of AnnV–QD labeled cells gives qualitative and quantitative results in a fast and cost-effective way.
Tuning upconversion through a sensitizer/activator-isolated NaYF4 core/shell structure
Authors: Ye Shuai , Chen Guanying , Shao Wei , Qu Junle , Prasad Paras N.
Published: January 2015

The ability to tune the emission color of upconversion nanoparticles (UCNPs) will greatly enhance the scope of their applications, ranging from infrared solar cells to volumetric multiplexed bioimaging.
A prominent bathochromic shift effect of indole-containing diarylethene derivatives
Authors: Cheng Hong-Bo , Huang Yao-Dong , Zhao Lina , Li Xu , Wu Hai-Chen
Published: January 2015

Bisindole diarylethene derivatives exhibit a strong bathochromic shift effect in photochromism compared with bisbenzothiophene diarylethene.
Exploring a cascade Heck–Suzuki reaction based route to kinase inhibitors using design of experiments
Authors: Ekebergh Andreas , Lingblom Christine , Sandin Peter , Wennerås Christine , Mårtensson Jerker
Published: January 2015

A fused tricyclic system with kinase inhibiting properties was assembledviaa palladium catalyzed tandem reaction. The reaction was optimized using statistical experimental design.
Functional porous membranes from amorphous linear dendritic polyester hybrids
Authors: Mongkhontreerat Surinthra , Walter Marie V. , Cai Yanling , Brismar Hjalmar , Hult Anders , Malkoch Michael
Published: January 2015

Non-toxic and functional linear dendritic hybrids were synthesized and exploited to generate reactive porous membranes for straightforward functionalization in aqueous media.
Macroscopic polarity control with alkali metal cation size and coordination environment in a series of tin iodates
Authors: Kim Yeong Hun , Tran T. Thao , Halasyamani P. Shiv , Ok Kang Min
Published: January 2015

The IO3 groups in Na2Sn(IO3)6 are aligned in a parallel manner attributed to the six-coordinate Na+ cation, whereas the IO3 polyhedra in Cs2Sn(IO3)6 rotate with respect to Sn4+ due to the nine-coordinate Cs+ cation.
Remarkable electron-withdrawing effect of the Ph2P(O)-ethynyl group: Ph2P(O)-ethynyl-substituted aryl halides and copper acetylides for tailor-made Sonogashira couplings
Authors: Peng Lifen , Xu Feng , Shinohara Kenta , Nishida Takanori , Wakamatsu Kan , Orita Akihiro , Otera Junzo
Published: January 2015

Ph2P(O)-ethynylphenyl bromide showed higher reactivity in Sonogashira couplings than phenylethynylphenyl bromide because of the electron-withdrawing nature of the Ph2P(O) group.
A template-free facile approach for the synthesis of CuS–rGO nanocomposites towards enhanced photocatalytic reduction of organic contaminants and textile effluents
Authors: Saranya Murugan , Ramachandran Rajendran , Kollu Pratap , Jeong Soon Kwan , Grace Andrews Nirmala
Published: January 2015

Copper sulfide–reduced graphene oxide nanocomposites were synthesized hydrothermally from copper nitrate and thiourea as precursor materials.
Dual application of facilely synthesized Fe3O4 nanoparticles: fast reduction of nitro compound and preparation of magnetic polyphenylthiourea nanocomposite for efficient adsorption of lead ions
Authors: Beyki Mostafa Hossein , Shemirani Farzaneh
Published: January 2015

Rapidly synthesized Fe3O4 was applied for the very fast reduction of a nitro compound and for the preparation of a polymer nanocomposite for lead adsorption.
Exploration of octahedrally shaped MnCo2O4 catalyst particles for visible light driven photocatalytic water splitting reaction
Authors: Shibli S. M. A. , Arun P. S. , Raj Anupama V.
Published: January 2015

MnCo2O4 catalyst with an octahedral geometry and 2.11 eV band gap was developed for visible light driven photocatalytic water splitting considering the crucial roles of Co(iii)OH, and cobalt(ii) oxide and Mn3+ in Co3O4 and Mn2O3 photocatalysts for water splitting.
Recent advances in polymer electro-optic modulators
Authors: Liu Jialei , Xu Guangming , Liu Fenggang , Kityk Iwan , Liu Xinhou , Zhen Zhen
Published: January 2015

Development of polymer EO modulators.
Enhanced shape memory performance of polyurethanes via the incorporation of organic or inorganic networks
Authors: Wu Chien-Hsin , Shau Shi-Min , Liu Shin-Chih , Dai Shenghong A. , Chen Su-Chen , Lee Rong-Ho , Hsieh Chi-Fa , Jeng Ru-Jong
Published: January 2015

A diol compound with a reactive azetidine-2,4-dione group was prepared and introduced as a side chain moiety of poly(ε-caprolactone) (PCL) based polyurethane (PU).
Green synthesis of zinc oxysulfide quantum dots using aegle marmelos fruit extract and their cytotoxicity in HeLa cells
Authors: Pavan Kumar Kalavakunta Venkata , Nirmal Ghosh Oriparambil Sivaraman , Balakrishnan G. , Thirugnanasambantham P. , Raghavan Santhosh Kumar , Viswanath Annamraju Kasi
Published: January 2015

Zinc oxysulfide quantum dots have been attracting increasing research interest due to their tunable electronic, optical and magnetic properties.
A binder-free Si-based anode for Li-ion batteries
Authors: Zhang Chunqian , Yang Fan , Zhang Dalin , Zhang Xu , Xue Chunlai , Zuo Yuhua , Li Chuanbo , Cheng Buwen , Wang Qiming
Published: January 2015

A binder-free anode for lithium ion batteries consisting of micro-sized silicon particles and polyacrylonitrile (PAN) was prepared.
Proposed correlation of glass formation ability with critical dosage for the amorphous alloys formed by ion beam mixing
Authors: Yang M. H. , Li J. H. , Liu B. X.
Published: January 2015

A negative correlation of glass formation ability (GFA) with the critical dosage (Dc) is first proposed for amorphous alloys formed by ion beam mixing (IBM), i.e. the lower the Dc the better the GFA, implying that Dc could serve as a GFA indicator.
High performance solid state supercapacitor based on a 2-mercaptopyridine redox-mediated gel polymer
Authors: Sun Kanjun , Dong Miaomiao , Feng Enke , Peng Hui , Ma Guofu , Zhao Guohu , Lei Ziqiang
Published: January 2015

A novel gel polymer PVA-H3PO4-PySH is prepared through introducing redox-mediated PySH into PVA-H3PO4host, and a solid state supercapacitor is fabricated using the gel polymer as electrolyte and separator, activated carbons as electrodes.
Mesoporous ZnCo2O4 microspheres as an anode material for high-performance secondary lithium ion batteries
Authors: Guo Lingyun , Ru Qiang , Song Xiong , Hu Shejun , Mo Yudi
Published: January 2015

The as-prepared mesoporous ZnCo2O4 microspheres showed a high specific capacity and excellent electrochemical performance when used as an anode material for lithium ion batteries.
One-pot synthesis affords perfectly six-fold symmetrical Au microsnowflakes for excellent electrochemical biosensing and surface-enhanced Raman scattering assays
Authors: Zhang Yan , Yue Yonghai , Peng Yi , Huang Chengcheng , Li Lidong , Guo Lin , Yang Shihe
Published: January 2015

Herein, Au microsnowflakes with six-fold symmetrical branches were successfully synthesized.
Palladium-catalyzed synthesis of aldehydes from aryl halides and tert-butyl isocyanide using formate salts as hydride donors
Authors: Zhang Ying , Jiang Xiao , Wang Jin-Mei , Chen Jing-Lei , Zhu Yong-Ming
Published: January 2015

A palladium-catalyzed hydroformylation of aryl halides with tert-butyl isocyanide and formate salts without any additional bases is described.
Periodic arrays of liquid crystalline torons in microchannels
Authors: Kim Yun Ho , Gim Min-Jun , Jung Hee-Tae , Yoon Dong Ki
Published: January 2015

We have fabricated very well ordered periodic arrays of torons using cholesteric liquid crystal phase (CLC) in microchannels.
A synchronous approach for facile production of Ge–carbon hybrid nanoparticles for high-performance lithium batteries
Authors: Li Xiaona , Liang Jianwen , Hou Zhiguo , Zhu Yongchun , Wang Yan , Qian Yitai
Published: January 2015

A new synchronous approach for facile production of uniform Ge–carbon hybrid nanoparticles from a germanium chelate complex is designed and described.
Sonogashira cross-coupling reaction with 4-[18F]fluoroiodobenzene for rapid 18F-labelling of peptides
Authors: Way Jenilee D. , Bergman Cody , Wuest Frank
Published: January 2015

The study describes the Sonogashira cross-coupling reaction with 4-[18F]fluoroiodobenzene ([18F]FIB) as novel and efficient method for rapid labelling of peptides with the short-lived positron emitter fluorine-18.
Correction: Highly lithium-ion conductive battery separators from thermally rearranged polybenzoxazole
Authors: Lee Moon Joo , Kim Ji Hoon , Lim Hyung-Seok , Lee So Young , Yu Hyung Kyun , Kim Jong Hun , Lee Joo Sung , Sun Yang-Kook , Guiver Michael D. , Suh Kyung Do , Lee Young Moo
Published: January 2015

Correction for ‘Highly lithium-ion conductive battery separators from thermally rearranged polybenzoxazole’ by Moon Joo Lee et al., Chem. Commun., 2015, 51, 2068–2071.
Ultra-wideline14N solid-state NMR as a method for differentiating polymorphs: glycine as a case study
Authors: Veinberg Stanislav L. , Friedl Zachary W. , Harris Kristopher J. , O'Dell Luke A. , Schurko Robert W.
Published: January 2015

14N solid-state NMR is useful for differentiating polymorphs and chemically distinct nitrogen-containing compounds. A case study of glycine is presented.
Millipede-inspired structural design principle for high performance polysaccharide binders in silicon anodes
Authors: Jeong You Kyeong , Kwon Tae-woo , Lee Inhwa , Kim Taek-Soo , Coskun Ali , Choi Jang Wook
Published: January 2015

The millipede's extraordinary adhesion provides a design principle for silicon anode binders with emphasis on the superstructure and electrostatic charge.
Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages
Authors: Taylor Andrew , Day Martin P. , Hill Sarah , Marshall John , Patriarca Marina , White Mark
Published: January 2015

This review discusses developments in elemental mass spectrometry, atomic absorption, emission and fluorescence, XRF and LIBS, as applied to the analysis of specimens of clinical interest, foods and beverages. Sample preparation procedures and quality assurance are also included.
A diaminomaleonitrile based selective colorimetric chemosensor for copper(ii) and fluoride ions
Authors: Jo Tae Geun , Na Yu Jeong , Lee Jae Jun , Lee Myoung Mi , Lee Sun Young , Kim Cheal
Published: January 2015

A chemosensor showed colorimetric sensing for copper(ii) and fluoride by changing color from yellow to colorless and to orange.
A highly diastereoselective Friedel–Crafts reaction of indoles with isatin-derived N-sulfinyl ketimines towards the efficient synthesis of chiral tetrasubstituted 3-indolyl-3-aminooxindoles
Authors: Chen Jian-Ping , Chen Wen-Wen , Li Yi , Xu Ming-Hua
Published: January 2015

A Lewis acid promoted highly diastereoselective asymmetric Friedel–Crafts alkylation of indoles with isatin-derivedN-tert-butanesulfinyl ketimines is described.
Investigation on the adsorption behavior of polyacrylamide on resin by dual polarization interferometry
Authors: Li Keyi , Duan Ming , Wang Hu , Zhang Jian , Jing Bo
Published: January 2015

The real-time adsorption data of polyacrylamide on resin were investigated by dual polarization interferometry, two adsorption types were obtained.
Synthesis and anion binding studies of tris(3-aminopropyl)amine-based tripodal urea and thiourea receptors: proton transfer-induced selectivity for hydrogen sulfate over sulfate
Authors: Emami Khansari Maryam , Johnson Corey R. , Basaran Ismet , Nafis Aemal , Wang Jing , Leszczynski Jerzy , Hossain Md. Alamgir
Published: January 2015

Tris(3-aminopropyl)amine-based tripodal urea and thiourea receptors are synthesized and investigated for anion binding, showing affinities for fluoride and the proton transfer-induced selectivity for hydrogen sulfate over sulfate in DMSO-d6.
Removal of Cu2+, Pb2+ and Cr6+ from aqueous solutions using a chitosan/graphene oxide composite nanofibrous adsorbent
Authors: Hadi Najafabadi Hossein , Irani Mohammad , Roshanfekr Rad Leila , Sojoudi Amirsalar , Haririan Ismaeil
Published: January 2015

A novel electrospun chitosan/graphene oxide (GO) nanofibrous adsorbent was successfully developed by an electrospinning process.
A two-dimensionally microporous thiostannate with superior Cs+ and Sr2+ ion-exchange property
Authors: Qi Xing-Hui , Du Ke-Zhao , Feng Mei-Ling , Li Jian-Rong , Du Cheng-Feng , Zhang Bo , Huang Xiao-Ying
Published: January 2015

A layered thiostannate with remarkable Cs+ and Sr2+ ion-exchange performance was synthesized on a large scale by a facile, one-pot, economical solvothermal method.
High glucose induces mitochondrial dysfunction independently of protein O-GlcNAcylation
Authors: Dassanayaka Sujith , Readnower Ryan D. , Salabei Joshua K. , Long Bethany W. , Aird Allison L. , Zheng Yu-Ting , Muthusamy Senthilkumar , Facundo Heberty T. , Hill Bradford G. , Jones Steven P.
Published: January 2015

Previous reports indicate that hyperglycaemia/diabetes enhances flux through accessory pathways, such as protein O-GlcNAcylation and contributes to cellular dysfunction. In the present study, we examined whether hyperglycaemia induces mitochondrial dysfunction via enhanced protein O-GlcNAcylation. Our results indicate that enhanced protein O-GlcNAcylation does not explain high glucose-induced mitochondrial dysfunction.
Role of the N-terminal transmembrane domain in the endo-lysosomal targeting and function of the human ABCB6 protein
Authors: Kiss Katalin , Kucsma Nora , Brozik Anna , Tusnady Gabor E. , Bergam Ptissam , van Niel Guillaume , Szakacs Gergely
Published: January 2015

ATP-binding cassette, subfamily B (ABCB) 6 is a homodimeric ATP-binding cassette (ABC) transporter present in the plasma membrane and in the intracellular organelles. The intracellular localization of ABCB6 has been a matter of debate, as it has been suggested to reside in the mitochondria and the endo-lysosomal system. Using a variety of imaging modalities, including confocal microscopy and EM, we confirm the endo-lysosomal localization of ABCB6 and show that the protein is internalized from the plasma membrane through endocytosis, to be distributed to multivesicular bodies and lysosomes. In addition to the canonical nucleotide-binding domain (NBD) and transmembrane domain (TMD), ABCB6 contains a unique N-terminal TMD (TMD0), which does not show sequence homology to known proteins. We investigated the functional role of these domains through the molecular dissection of ABCB6. We find that the folding, dimerization, membrane insertion and ATP binding/hydrolysis of the core–ABCB6 complex devoid of TMD0 are preserved. However, in contrast with the full-length transporter, the core–ABCB6 construct is retained at the plasma membrane and does not appear in Rab5-positive endosomes. TMD0 is directly targeted to the lysosomes, without passage to the plasma membrane. Collectively, our results reveal that TMD0 represents an independently folding unit, which is dispensable for catalysis, but has a crucial role in the lysosomal targeting of ABCB6.
In vitro translation in a hybrid cell free lysate with exogenous cellular ribosomes
Authors: Panthu Baptiste , Décimo Didier , Balvay Laurent , Ohlmann Théophile
Published: January 2015

This describes a novel cell-free system in which endogenous ribosomes from the reticulocyte lysate are replaced by ribosomes from any tissues, organs or cell types. This enables to control the overall ribosomal concentration and to study the translation of specialized genes.
Efficacy of the Modifying Phonation Intervals (MPI) Stuttering Treatment Program With Adults Who Stutter
Authors: Ingham Roger J. , Ingham Janis C. , Bothe Anne K. , Wang Yuedong , Kilgo Martin
Published: January 2015

Purpose

This study compared a new adult stuttering treatment program (Modifying Phonation Intervals, or MPI) with the standard of care for reducing stuttered speech in adults (prolonged speech).

Method

Twenty-seven adults who stutter were assigned to either MPI or prolonged speech treatment, both of which used similar infrastructures. Speech and related variables were assessed in 3 within-clinic and 3 beyond-clinic speaking situations for participants who successfully completed all treatment phases.

Results

At transfer, maintenance, and follow-up, the speech of 14 participants who successfully completed treatment was similar to that of normally fluent adults. Successful participants also showed increased self-identification as a “normal speaker,” decreased self-identification as a “stutterer,” reduced short intervals of phonation, and some increased use of longer duration phonation intervals. Eleven successful participants received the MPI treatment, and 3 received the prolonged speech treatment.

Conclusions

Outcomes for successful participants were very similar for the 2 treatments. The much larger proportion of successful participants in the MPI group, however, combined with the predictive value of specific changes in PI durations suggest that MPI treatment was relatively more effective at assisting clients to identify and change the specific speech behaviors that are associated with successful treatment of stuttered speech in adults.
Environmental Sound Training in Cochlear Implant Users
Authors: Shafiro Valeriy , Sheft Stanley , Kuvadia Sejal , Gygi Brian
Published: January 2015

Purpose

The study investigated the effect of a short computer-based environmental sound training regimen on the perception of environmental sounds and speech in experienced cochlear implant (CI) patients.

Method

Fourteen CI patients with the average of 5 years of CI experience participated. The protocol consisted of 2 pretests, 1 week apart, followed by 4 environmental sound training sessions conducted on separate days in 1 week, and concluded with 2 posttest sessions, separated by another week without training. Each testing session included an environmental sound test, which consisted of 40 familiar everyday sounds, each represented by 4 different tokens, as well as the Consonant Nucleus Consonant (CNC) word test, and Revised Speech Perception in Noise (SPIN-R) sentence test.

Results

Environmental sounds scores were lower than for either of the speech tests. Following training, there was a significant average improvement of 15.8 points in environmental sound perception, which persisted 1 week later after training was discontinued. No significant improvements were observed for either speech test.

Conclusions

The findings demonstrate that environmental sound perception, which remains problematic even for experienced CI patients, can be improved with a home-based computer training regimen. Such computer-based training may thus provide an effective low-cost approach to rehabilitation for CI users, and potentially, other hearing impaired populations.
Morphology and Syntax in Late Talkers at Age 5
Authors: Rescorla Leslie , Turner Hannah L.
Published: January 2015

Purpose

This study reports age 5 morphology and syntax skills in late talkers identified at age 2 (
n
= 34) and typically developing comparison children (
n
= 20).

Results

The late talkers manifested significant morphological delays at ages 3 and 4 relative to comparison peers. Based on the 14 morphemes analyzed at age 5, the only significant group difference was on the third person regular –
s
inflection. This was also the only significant difference when we compared late talkers with continuing delay, late bloomers (who scored within 1 standard deviation of the comparison group in mean length of utterance), and typically developing peers. The late talker and comparison children differed greatly in mean total scores on the Index of Productive Syntax (Scarborough, 1990), a measure of syntactic complexity. The group with continuing delay scored significantly lower on the IPSyn than the late bloomer and typically developing groups, which did not differ from each other.

Conclusions

Findings are consistent with the higher order language group differences found through adolescence in these late talkers relative to comparison peers with similar socioeconomic status and similar nonverbal abilities, supporting the notion that late talkers have an ongoing weakness in language endowment that manifests differently over the course of development.
At the Intersection of Cognition and Grammar: Deficits Comprehending Counterfactuals in Turkish Children With Specific Language Impairment
Authors: Yarbay Duman Tuba , Blom Elma , Topbaş Seyhun
Published: January 2015

Purpose

This study investigated the comprehension of counterfactual conditionals in monolingual Turkish children with specific language impairment (SLI) and typically developing (TD) children. Comprehending counterfactuals requires a well-developed cognitive system (Beck, Riggs, & Gorniak, 2009). Children with SLI have impaired cognitive functioning (Im-Bolter, Johnston, & Pascual-Leone, 2006), which affects their ability to comprehend counterfactuals.

Method

The sample consisted of 13 children (9 boys, 4 girls) with SLI who were matched in age and nonverbal intelligence with 13 TD children (8 boys, 5 girls; mean age 6;9 [years; months] for both groups). Each group completed a sentence comprehension and repetition task with 3 sentence conditions: nonconditional, factual, and counterfactual. Nonconditionals did not have
if
-embedding, whereas factual and counterfactual conditionals were morphosyntactically equivalent
if
-clauses, but only the latter was cognitively complex.

Results

Conditionals were more difficult to comprehend than nonconditionals for both groups. Counterfactuals were more difficult to comprehend than the morphosyntactically equivalent factual counterparts for the SLI group. There was no discrepancy between the groups for repetition of counterfactuals and factuals.

Conclusions

Children with SLI have difficulty processing counterfactuals due to morphosyntactic complexity (
if
-embedding) and the cognitive processes involved in comprehending counterfactuals. This indicates that cognitive complexity adds to sentence comprehension deficits in SLI.
Power allocation in cooperative sensor networks: a stochastic approximation approach
Authors: Abdul Azim Mohammad , Aung Zeyar
Published: January 2015

A power allocation technique based on simultaneous perturbation stochastic approximation is devised for wireless sensor networks. Power is such allocated in source and relay that at receiver the desired combined signal strength is attained. The behaviour of the proposed technique is evaluated in a modified simple carrier sense multiple access‐collision avoidance‐based access control mechanism along with the greedy forwarding approach. Results show the superior performance of the cooperative relay scheme both in throughput and energy gain.
Control synthesis and formation mechanism of sphere‐like titanium dioxide
Authors: Xu Sibo , Wang Jinxing , Cheng Shifang , Miao Bin , Hussain Shahid , Zeng Wen
Published: January 2015

Using a simple hydrothermal method without surfactants and templates, different morphologies of titanium dioxide (TiO2) have been synthesised such as nanocubes, nanosheets and microspheres. The effects of the addition of hydrofluoric acid (HF) and hydrogen peroxide (H2O2) in the preparation of TiO2 were studied. It was found that more H2O2 may accelerate the formation of a spherical morphology and that HF has three roles: dissolving Ti powder, retarding the hydrolysis of titanium precursor and reducing surface energy. Reaction time has a significant effect on morphological transformation. The aggregation of microstructures is described, the effects of the addition of HF and H2O2 on the condition of aggregation have been studied. Photocatalysis measurements showed that sphere‐like TiO2 consisting of nanocubes exhibited the highest activity for degrading rhodamine B under UV light.
Co-ordinated detection of microparticles using tunable resistive pulse sensing and fluorescence spectroscopy
Authors: Hauer Peter , Le Ru Eric C. , Willmott Geoff R.
Published: January 2015

Tunable resistive pulse sensing (TRPS) has emerged as a useful tool for particle-by-particle detection and analysis of microparticles and nanoparticles as they pass through a pore in a thin stretchable membrane. We have adapted a TRPS device in order to conduct simultaneous optical measurements of particles passing through the pore. High-resolution fluorescence emission spectra have been recorded for individual 1.9 μm diameter particles at a sampling period of 4.3 ms. These spectra are time-correlated with RPS pulses in a current trace sampled every 20 μs. The flow rate through the pore, controlled by altering the hydrostatic pressure, determines the rate of particle detection. At pressures below 1 kPa, more than 90% of fluorescence and RPS events were matching. At higher pressures, some peaks were missed by the fluorescence technique due to the difference in sampling rates. This technique enhances the particle-by-particle specificity of conventional RPS measurements and could be useful for a range of particle characterization and bioanalysis applications.