bluuebunny/crossref_metadata_2025 huggingface dataset:
Travelling wave solutions of a parabolic-hyperbolic system for contact inhibition of cell-growth
Authors: BERTSCH M. , HILHORST D. , IZUHARA H. , MIMURA M. , WAKASA T.
Published: February 2015

We consider a cell growth model involving a nonlinear system of partial differential equations which describes the growth of two types of cell populations with contact inhibition. Numerical experiments show that there is a parameter regime where, for a large class of initial data, the large time behaviour of the solutions is described by a segregated travelling wave solution with positive wave speed c. Here, the word segregated expresses the fact that the different types of cells are spatially segregated, and that the single densities are discontinuous at the moving interface which separates the two populations. In this paper, we show that, for each wave speed c > c, there exists an overlapping travelling wave solution, whose profile is continuous and no longer segregated. We also show that, for a large class of initial functions, the overlapping travelling wave solutions cannot represent the large time profile of the solutions of the system of partial differential equations. The structure of the travelling wave solutions strongly resembles that of the scalar Fisher-KPP equation, for which the special role played by the travelling wave solution with minimal speed has been extensively studied.
An extensible approach to session polymorphism
Authors: GOTO MATTHEW , JAGADEESAN RADHA , JEFFREY ALAN , PITCHER CORIN , RIELY JAMES
Published: February 2015

Session types describe and constrain the input/output behaviour of systems. Existing session typing systems have limited support for polymorphism. For example, existing systems cannot provide the most general type for a generic proxy process that forwards messages between two channels. We provide a polymorphic session typing system for the π calculus, and demonstrate the utility of session-type-level functions in combination with polymorphic session typing. The type system guarantees subject reduction and safety properties, but not deadlock freedom. We describe a formalization of the type system in Coq. The proofs of subject reduction and safety properties, as well as typing of example processes, have been mechanically verified.
Procedural characteristics and adverse events in diagnostic and interventional catheterisations in paediatric and adult CHD: initial report from the IMPACT Registry
Authors: Vincent Robert N. , Moore John , Beekman Robert H. , Benson Lee , Bergersen Lisa , Holzer Ralf , Jayaram Natalie , Jenkins Kathy , Ringel Richard , Rome Jonathan , Martin Gerard R.
Published: February 2015

Objectives

To report procedural characteristics and adverse events on data collected in the registry.

Background

The IMPACT – IMproving Paediatric and Adult Congenital Treatment – Registry is a catheterisation registry of paediatric and adult patients with CHD undergoing diagnostic and interventional cardiac catheterisation. We are reporting the procedural characteristics and adverse events of patients undergoing diagnostic and interventional catheterisation procedures from January, 2011 to March, 2013.

Methods

Demographic, clinical, procedural, and institutional data elements were collected at the participating centres and entered via either a web-based platform or software provided by American College of Cardiology-certified vendors, and were collected in a secure, centralised database. Centre participation was voluntary.

Results

During the time frame of data collection, 19,797 procedures were entered into the IMPACT Registry. Procedures were classified as diagnostic only (35.4%); one of six specific interventions (23.8%); other or multiple interventions (40.7%); and were further broken down into four age groups. Anaesthesia was used in 84.1% of diagnostic procedures and 87.8% of interventional ones. Adverse events occurred in 10.0% of diagnostic and 11.1% of interventional procedures.

Conclusions

The IMPACT Registry is gathering data to set national benchmarks for diagnostic and certain specific interventional procedures. We are seeing little differences in procedural characteristics or adverse events in diagnostic procedures compared with interventional procedures overall, but there is significant variation in adverse events amongst age categories. Risk stratification and patient acuity scores will be required for further analysis of these differences.
Current outcomes of the bi-directional cavopulmonary anastomosis in single ventricle patients: analysis of risk factors for morbidity and mortality, and suitability for Fontan completion
Authors: François Katrien , Vandekerckhove Kristof , De Groote Katya , Panzer Joseph , De Wolf Daniel , De Wilde Hans , Bové Thierry
Published: February 2015

Objectives

The bi-directional cavopulmonary anastomosis forms an essential staging procedure for univentricular hearts. This review aims to identify risk factors for morbidity, mortality, and suitability for Fontan completion.

Methods

A total of 114 patients undergoing cavopulmonary anastomosis between 1992 and 2012 were reviewed to assess primary – mortality and survival to Fontan completion – and secondary outcome endpoints – re-intubation, new drain, and ICU stay. Median age and weight were 8 months and 6.9 kg, respectively. In 83% of patients, 1–3 interventions had preceded. Norwood-type procedures became more prevalent over time.

Results

Extubation occurred after a median of 4 hours, median ICU stay was 2 days; 10 patients (8.8%) needed re-intubation and 18 received a new drain. Higher central venous pressure and transpulmonary gradient were risk factors for new drain insertion (p<0.01). Higher pre-operative pulmonary pressure correlated with increased inotropic support and prolonged intubation (p=0.01). Need for re-intubation was significantly affected by younger age at operation (p=0.01). Hospital and pre-Fontan mortality were 11.4 and 5.3%, respectively. Operative mortality was independently affected by younger age (p=0.013), lower weight (p=0.02), longer bypass time (p=0.04), and re-intubation (p=0.004). Interstage mortality was mainly influenced by moderate ventricular function (p=0.03); 82% of survivors underwent or are candidates for Fontan completion.

Conclusion

The cavopulmonary anastomosis remains associated with adverse outcomes. Age at operation decreases with rising prevalence of complex univentricular hearts. Considering the important impact of re-intubation on hospital mortality, peri-operative management should focus on optimising cardio-respiratory status. Once this selection step is taken, successful Fontan completion can be expected, provided that ventricular function is maintained.
Separation anxiety disorder from the perspective of DSM-5: clinical investigation among subjects with panic disorder and associations with mood disorders spectrum
Authors: Gesi Camilla , Abelli Marianna , Cardini Alessandra , Lari Lisa , Di Paolo Luca , Silove Derrick , Pini Stefano
Published: February 2015

Objective/Introduction

High levels of comorbidity between separation anxiety disorder (SEPAD) and panic disorder (PD) have been found in clinical settings. In addition, there is some evidence for a relationship involving bipolar disorder (BD) and combined PD and SEPAD. We aim to investigate the prevalence and correlates of SEPAD among patients with PD and whether the presence of SEPAD is associated with frank diagnoses of mood disorders or with mood spectrum symptoms.

Methods

Adult outpatients (235) with PD were assessed by the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I), the Panic Disorder Severity Scale (PDSS), the Structured Clinical Interview for Separation Anxiety Symptoms (SCI-SAS), and the Mood Spectrum Self-Report Instrument (MOODS-SR, lifetime version).

Results

Of ther 235 subjects, 125 (53.2%) were categorized as having SEPAD and 110 (46.8%) as not. Groups did not differ regarding onset of PD, lifetime prevalence of obsessive compulsive disorder (OCD), social phobia, simple phobia, BD I and II, or major depressive disorder (MDD). SEPAD subjects were more likely to be female and younger; they showed higher rates of childhood SEPAD, higher PDSS scores, and higher MOODS-SR total and manic component scores than subjects without SEPAD.

Discussion

SEPAD is highly prevalent among PD subjects. Patients with both PD and SEPAD show higher lifetime mood spectrum symptoms than patients with PD alone. Specifically, SEPAD is correlated with the manic/hypomanic spectrum component.

Conclusion

Our data confirm the high prevalence of SEPAD in clinical settings. Moreover, our findings corroborate a relationship between mood disorders and SEPAD, highlighting a relationship between lifetime mood spectrum symptoms and SEPAD.
Variability in the reported energy, total fat and saturated fat contents in fast-food products across ten countries
Authors: Ziauddeen Nida , Fitt Emily , Edney Louise , Dunford Elizabeth , Neal Bruce , Jebb Susan A
Published: February 2015

Objective

Fast foods are often energy dense and offered in large serving sizes. Observational data have linked the consumption of fast foods to an increased risk of obesity and related diseases.

Design

We surveyed the reported energy, total fat and saturated fat contents, and serving sizes, of fast-food items from five major chains across ten countries, comparing product categories as well as specific food items available in most countries.

Setting

MRC Human Nutrition Research, Cambridge, UK.

Subjects

Data for 2961 food and drink products were collected, with most from Canada (n550) and fewest from the United Arab Emirates (n106).

Results

There was considerable variability in energy and fat contents of fast foods across countries, reflecting both the portfolio of products and serving size variability. Differences in total energy between countries were particularly noted for chicken dishes (649–1197 kJ/100 g) and sandwiches (552–1050 kJ/100g). When comparing the same product between countries variations were consistently observed in total energy and fat contents (g/100 g); for example, extreme variation in McDonald’s Chicken McNuggets with 12 g total fat/100 g in Germany compared with 21·1 g/100 g in New Zealand.

Conclusions

These cross-country variations highlight the possibility for further product reformulation in many countries to reduce nutrients of concern and improve the nutritional profiles of fast-food products around the world. Standardisation of serving sizes towards the lower end of the range would also help to reduce the risk of overconsumption.
The Taste of ‘the End of the Month’, and How to Avoid It: Coping with Restrained Food Budgets in a Scandinavian Welfare State Context
Authors: Nielsen Annemette , Lund Thomas Bøker , Holm Lotte
Published: February 2015

Based on a mixed methods approach, this article describes the prevalence of different levels of food budget restraints in a sample of 1,650 Danish households, and explores different types of coping strategies to deal with such restraints. Strategies concerned cooking, eating and buying food. A deeper knowledge of coping strategies was obtained by analysing qualitative data from interviews with thirty families who have experienced food budget restraints. Results revealed that more than 40 per cent reported some level of restraint on their food budget, while about 20 per cent experienced more substantial food budget restraints or food insecurity. Single parent households were at significantly greater risk of experiencing restraint than others. An investigation of coping strategies showed that some strategies, for example, using leftovers and cooking seasonal products, were common across all levels of budget restraint, while strategies affecting social life and taste preferences negatively were mostly applied when restraint was more severe. The qualitative analysis explored how the various strategies involved the potential for both positive and negative experiences for the individual, depending on the wider context surrounding the need to reduce household food budgets. Results from this study may be important for developing adequate measures to influence food purchases and eating practices in specific groups in situations of widespread economic turbulence in welfare societies.
Biodiversity of the Silurian osteostracans of the East Baltic
Authors: Märss T. , Afanassieva O. , Blom H.
Published: February 2015

The sculpture and histology of osteostracan head shields and trunk squamations from the Silurian of Estonia are described, illustrated and used for the identification of disarticulated microremains collected from outcrop sections and numerous drill cores in Estonia and Latvia over the last 40 years. The scattered osteostracan material contains thousands of specimens of scales and shield fragments. The sculpture and histology of species of the previously identified eight genera in the region (Tremataspis,Dartmuthia,Saaremaaspis,Oeselaspis,Aestiaspis,Thyestes,Procephalaspis, Witaaspis) are redescribed, together withAteleaspis, found in Estonia for the first time. The sculpture on the cornua of several taxa is described for the first time. The new taxaTremataspis perforatasp. nov.,Dartmuthia procerasp. nov.,Eldaaspis mikliigen. et sp. nov.,Tahulaspis ordinatagen. et sp. nov.,Tahulaspis praeviagen. et sp. nov.,Meelaidaspis gennadiigen. et sp. nov. andOhesaareaspis ponticulatagen. et sp. nov. are established, based upon sculpture and histological characteristics of the exoskeleton. The supraoral field with denticles of that field are described for the first time inOeselaspis pustulata, as is the supraoral plate with buccal denticles inMeelaidaspis gennadiigen. et sp. nov. Thin sections of all taxa (except ofWitaaspis) have been studied. This work sheds light on East Baltic osteostracan biodiversity from the Maasi Beds of the Jaagarahu Stage, Sheinwoodian, lower Wenlock up to the Ohesaare Stage, upper Přidoli, Silurian.
Delivery of Behavioral Health Services in a Pediatric Primary Care Setting: A Case Illustration With Adolescent Depression
Authors: Borschuk Adrienne P. , Jones Heather A. , Parker Kimberly M. , Crewe Stephanie
Published: February 2015

Child and adolescent psychopathology remains underassessed and undertreated in the United States. Recent shifts in integrative care have resulted in an increase in treating children and adolescents in pediatric primary care settings as behavioral health services become more available in these locations. There is limited research on brief behavioral health treatment delivered in these settings; however, there is a growing literature starting to support the efficacy of such interventions. This article describes the challenges encountered in the implementation of behavioral health treatment in pediatric care setting. It also reports on the adaptation of a CBT treatment for adolescent depression in this setting, and a case illustration is presented with promising results. Potential strategies for implementing treatment for adolescents in pediatric primary care and future directions for examining the benefits of delivering behavioral health care in this setting are discussed.
Searching for a Screener: Examination of the Factor Structure of the General Health Questionnaire in Malaysia
Authors: Chin Eu Gene , Drescher Christopher F. , Trent Lindsay Rae , Darden Marie , Seak Wei Chiew , Johnson Laura R.
Published: February 2015

Although mental health program development and service delivery have progressed in Malaysia since its independence in 1957, a shortage of mental health professionals remains a main barrier to mental health care ( Haque, 2005 ). Stigma and cultural beliefs about mental illness may further impede psychological help-seeking. An easy-to-use mental health screener such as the 12-item General Health Questionnaire (GHQ-12) could be used to streamline mental health service delivery and to facilitate integration into primary health care settings. In this study, we conducted a Multigroup Confirmatory Factor Analysis (MGCFA) across English and Chinese language versions for the GHQ-12 to examine the fit of existing factor structures for the GHQ-12. Participants were Malaysian college students of diverse ethnicities attending 2 schools in Malaysia who completed English or Chinese versions of the GHQ-12 (English subsample, n = 151, Chinese subsample, n = 127). Results suggested that an eight-item version of Ye’s (2009) model provided the best fit for both language versions. However, some items on the Chinese version appear to underestimate general psychological distress compared with the English version, thus potentially limiting its utility. Possible reasons for differential item performance and implications of the study are discussed.
Comparison of dementia risk between end stage renal disease patients with hemodialysis and peritoneal dialysis - a population based study
Authors: Lin Yi-Ting , Wu Ping-Hsun , Kuo Mei-Chuan , Chen Cheng-Sheng , Chiu Yi-Wen , Yang Yi-Hsin , Lin Ming-Yen , Hwang Shang-Jyh , Chen Hung-Chun
Published: February 2015

A higher risk of dementia was reported in patients undergoing maintenance hemodialysis (HD) compared to those undergoing peritoneal dialysis (PD). Selection bias and competing risk of death were not considered in previous studies. The aim of this study was to investigate dementia risk in patients undergoing HD and PD by using the Taiwan Longitudinal Health Insurance Database. We enrolled 52,332 incident HD patients and 3292 incident PD patients who were older than 40 years between January 1, 1998 and December 31, 2007. During the study period, 3775 patients were diagnosed with dementia in the HD group (177.5 per 10,000 person-years incidence rate) and 181 patients in the PD group (145.9 per 10,000 person-years incidence rate). The results revealed that the higher hazard ratio of HD compared with PD for dementia disappeared after controlling for demographic characteristics, propensity score and competing death risk (subdistribution hazard ratio was 1.086; 95% confidence interval, 0.940–1.255). In conclusion, HD did not increase the risk of dementia in dialysis-dependent patients compared to PD.
Higher-level phylogeny of paraneopteran insects inferred from mitochondrial genome sequences
Authors: Li Hu , Shao Renfu , Song Nan , Song Fan , Jiang Pei , Li Zhihong , Cai Wanzhi
Published: February 2015

Mitochondrial (mt) genome data have been proven to be informative for animal phylogenetic studies but may also suffer from systematic errors, due to the effects of accelerated substitution rate and compositional heterogeneity. We analyzed the mt genomes of 25 insect species from the four paraneopteran orders, aiming to better understand how accelerated substitution rate and compositional heterogeneity affect the inferences of the higher-level phylogeny of this diverse group of hemimetabolous insects. We found substantial heterogeneity in base composition and contrasting rates in nucleotide substitution among these paraneopteran insects, which complicate the inference of higher-level phylogeny. The phylogenies inferred with concatenated sequences of mt genes using maximum likelihood and Bayesian methods and homogeneous models failed to recover Psocodea and Hemiptera as monophyletic groups but grouped, instead, the taxa that had accelerated substitution rates together, including Sternorrhyncha (a suborder of Hemiptera), Thysanoptera, Phthiraptera and Liposcelididae (a family of Psocoptera). Bayesian inference with nucleotide sequences and heterogeneous models (CAT and CAT + GTR), however, recovered Psocodea, Thysanoptera and Hemiptera each as a monophyletic group. Within Psocodea, Liposcelididae is more closely related to Phthiraptera than to other species of Psocoptera. Furthermore, Thysanoptera was recovered as the sister group to Hemiptera.
Enhanced Surface-and-Interface Coupling in Pd-Nanoparticle-coated LaAlO3/SrTiO3 Heterostructures: Strong Gas- and Photo-Induced Conductance Modulation
Authors: Kim Haeri , Chan Ngai Yui , Dai Ji-yan , Kim Dong-Wook
Published: February 2015

Pd nanoparticle (NP) coated LaAlO3/SrTiO3 (LAO/STO) heterointerface exhibits more notable conductance (G) change while varying the ambient gas (N2, H2/N2 and O2) and illuminating with UV light (wavelength: 365 nm) than a sample without the NPs. Simultaneous Kelvin probe force microscopy and transport measurements reveal close relationships between the surface work function (W) and G of the samples. Quantitative analyses suggest that a surface adsorption/desorption-mediated reaction and redox, resulting in a band-alignment modification and charge-transfer, could explain the gas- and photo-induced conductance modulation at the LAO/STO interface. Such surface-and-interface coupling enhanced by catalytic Pd NPs is a unique feature, quite distinct from conventional semiconductor hetero-junctions, which enables the significant conductance tunability at ultrathin oxide heterointerfaces by external stimuli.
High pressure Raman spectroscopy of H2O-CH3OH mixtures
Authors: Hsieh Wen-Pin , Chien Yu-Hsiang
Published: February 2015

Complex intra-molecular interactions and the hydrogen-bonding network in H2O-volatile mixtures play critical roles in many dynamics processes in physical chemistry, biology and Earth and planetary sciences. We used high pressure Raman spectroscopy to study the pressure evolution of vibrational frequencies and bonding behavior in H2O-CH3OH mixtures. We found that the presence of low CH3OH content in H2O increases the transition pressure where water crystallizes to ice VI, but does not significantly change the pressure where ice VI transforms to ice VII. Furthermore, the stiffening rates of C-H stretching frequencies dω/dP in CH3OH significantly decrease upon the crystallization of water and the softening rates of the O-H stretching frequencies of ice VII are suppressed over a narrow pressure range, after which the frequencies of these modes shift with pressure in ways similar to pure CH3OH and ice VII, respectively. Such complex pressure evolution of Raman frequencies along with pronounced variations in Raman intensities of CH3OH within the sample and the hysteresis of the water-ice VI phase transition suggest pressure-induced segregation of low content CH3OH from ice VII. These findings indicate the significant influence of volatiles on the crystallization of sub-surface ocean and thermal evolution within large icy planets and satellites.
Probing the electronic and spintronic properties of buried interfaces by extremely low energy photoemission spectroscopy
Authors: Fetzer Roman , Stadtmüller Benjamin , Ohdaira Yusuke , Naganuma Hiroshi , Oogane Mikihiko , Ando Yasuo , Taira Tomoyuki , Uemura Tetsuya , Yamamoto Masafumi , Aeschlimann Martin , Cinchetti Mirko
Published: February 2015

Ultraviolet photoemission spectroscopy (UPS) is a powerful tool to study the electronic spin and symmetry features at both surfaces and interfaces to ultrathin top layers. However, the very low mean free path of the photoelectrons usually prevents a direct access to the properties of buried interfaces. The latter are of particular interest since they crucially influence the performance of spintronic devices like magnetic tunnel junctions (MTJs). Here, we introduce spin-resolved extremely low energy photoemission spectroscopy (ELEPS) to provide a powerful way for overcoming this limitation. We apply ELEPS to the interface formed between the half-metallic Heusler compound Co2MnSi and the insulator MgO, prepared as in state-of-the-art Co2MnSi/MgO-based MTJs. The high accordance between the spintronic fingerprint of the free Co2MnSi surface and the Co2MnSi/MgO interface buried below up to 4 nm MgO provides clear evidence for the high interface sensitivity of ELEPS to buried interfaces. Although the absolute values of the interface spin polarization are well below 100%, the now accessible spin- and symmetry-resolved wave functions are in line with the predicted existence of non-collinear spin moments at the Co2MnSi/MgO interface, one of the mechanisms evoked to explain the controversially discussed performance loss of Heusler-based MTJs at room temperature.
Analyte induced water adsorbability in gas phase biosensors: the influence of ethinylestradiol on the water binding protein capacity
Authors: Snopok Borys , Kruglenko Ivanna
Published: February 2015

The response of a gas phase biosensor for 17α – ethinylestradiol is due to the change in the water-binding capacity of proteins induced by the binding of ETED molecules.
Solvatochromic sensor array for the identification of common organic solvents
Authors: Rankin Jacqueline M. , Zhang Qifan , LaGasse Maria K. , Zhang Yinan , Askim Jon R. , Suslick Kenneth S.
Published: February 2015

A solvatochromic colorimetric sensor array was used to discriminate among common solvents; chemical and physical changes contribute to array response.
Determination of selenium in serum in the presence of gadolinium with ICP-QQQ-MS
Authors: Bishop David P. , Hare Dominic J. , Fryer Fred , Taudte Regina V. , Cardoso Barbara R. , Cole Nerida , Doble Philip A.
Published: February 2015

Triple–quadrupole ICP-MS using O2mass-shift technology is superior for removing gadolinium interference on selenium in serum.
One step synthesis of quantum dot–magnetic nanoparticle heterodimers for dual modal imaging applications
Authors: Lee Jiyeon , Hwang Gyoyeon , Hong Yeon Sun , Sim Taebo
Published: February 2015

MNP and QD heterodimer formation using the metal–DNA conjugation method for a dual modal probe in cellular imaging has been described.
Cyclodextrin-functionalized polymers as drug carriers for cancer therapy
Authors: Wei Hua , Yu Cui-yun
Published: February 2015

This mini-review highlights the recent progress in cyclodextrin-functionalized polymers as drug carriers for cancer therapy.
Aggregation-based abrupt crystallization from amorphous Ag2S to Ag2S nanocrystals
Authors: Zhang Ruding , Xue Xiaogang , Zhuang Zanyong , Zheng Jinsheng , Lin Zhang
Published: February 2015

Abrupt crystallization from ∼2–5 nm (amorphous) to ∼12–15 nm (crystalline) was observed in hydrothermal coarsening of Ag2S.
Accurate calculation of31P NMR chemical shifts in polyoxometalates
Authors: Pascual-Borràs Magda , López Xavier , Poblet Josep M.
Published: February 2015

We search for an optimal DFT/basis set combination for computationally reproducing31P NMR chemical shifts in polyoxometalates.
Modification of the catalytic properties of the Au4 nanocluster for the conversion of methane-to-methanol: synergistic effects of metallic adatoms and a defective graphene support
Authors: Sirijaraensre J. , Limtrakul J.
Published: February 2015

By means of the density functional theory calculations, enhanced catalytic activity of Au4 cluster for the partial oxidation of methane with the N2O oxidant is observed when the cluster is deposited on top of the Pd/graphene.
Thermal relaxation of lithium dendrites
Authors: Aryanfar Asghar , Brooks Daniel J. , Colussi Agustín J. , Merinov Boris V. , Goddard III William A. , Hoffmann Michael R.
Published: February 2015

Lithium metal dendrite tips are shown to thermally relax into flatter domains over ΔE‡R ∼ 20 kJ mol−1 barriers.
Inside-outside self-assembly of light-activated fast-release liposomes
Authors: Forbes Natalie , Shin Jeong Eun , Ogunyankin Maria , Zasadzinski Joseph A.
Published: February 2015

Schematic and TEM image of thermosensitive liposomes with NIR-absorbing nanoparticles.
Fluorometric imaging methods for palladium and platinum and the use of palladium for imaging biomolecules
Authors: Tracey Matthew P. , Pham Dianne , Koide Kazunori
Published: February 2015

Palladium and platinum metals have been used to facilitate novel bioimaging methods.
Dynamic combinatorial chemistry: a tool to facilitate the identification of inhibitors for protein targets
Authors: Mondal Milon , Hirsch Anna K. H.
Published: February 2015

Dynamic combinatorial chemistry enables efficient identification of protein binder(s) from a library of interconverting compounds. The library responds to the addition of the target by amplifying the strongest binder.
Bright luminescence in lanthanide coordination polymers with tetrafluoroterephthalate as a bridging ligand
Authors: Sobieray Miriam , Gode Jens , Seidel Christiane , Poß Marieke , Feldmann Claus , Ruschewitz Uwe
Published: February 2015

Ten lanthanide coordination polymers with tetrafluoroterephthalate as the linker were synthesized. Europium and terbium compounds exhibit intense red and green emission in the visible region with quantum yields up to 67%.
Solvent dependent reactivities of di-, tetra- and hexanuclear manganese complexes: syntheses, structures and magnetic properties
Authors: Yang Hua , Cao Fan , Li Dacheng , Zeng Suyuan , Song You , Dou Jianmin
Published: February 2015

An unusual solvent effect on the syntheses of di-, tetra-, and hexanuclear manganese complexes has been exhibited. Complex 5 displayed the first stacked, off-set 8-azametallacrown-3. Magnetic analysis showed slow magnetic relaxation with S = 4 ground state.
Micro-XANES study on Mn browning: use of quantitative valence state maps
Authors: Nuyts Gert , Cagno Simone , Bugani Simone , Janssens Koen
Published: February 2015

For the first time quantitative Mn valence state maps were obtained, by conversion of ratio maps IMn(E1)/IMn(E2) using a calibration curve, and were used in the evaluation of reducing treatments on historical glass suffering from Mn browning.
Mineralization of malachite green dye over visible light responsive bismuth doped TiO2–ZrO2 ferromagnetic nanocomposites
Authors: Charanpahari Archana , Ghugal Sachin G. , Umare Suresh S. , Sasikala Rajamma
Published: February 2015

Visible light responsive, ferromagnetic, reusable Bi doped TiO2–ZrO2 nanocomposites exhibit enhanced photodegradation and mineralization of malachite green dye. Hydroxyl radicals, holes and superoxides are active species in photodegradation.
In situ synthesis of luminescent carbon nanoparticles toward target bioimaging
Authors: Sharker Shazid Md. , Kim Sung Min , Lee Jung Eun , Jeong Ji Hoon , In Insik , Lee Kang Dea , Lee Haeshin , Park Sung Young
Published: February 2015

In situ synthesis of fluorescence carbon nanoparticles (FCNs) for target bioimaging applications derived from biocompatible hyaluronic acid (HA) without conjugation.
Polyvinylpyrrolidone-stabilized magnetic nickel nanochains for cancer hyperthermia and catalysis applications
Authors: Wu Jian , Zhou Wei , Cheng Qingmei , Yang Jinglei
Published: February 2015

Novel polyvinylpyrrolidone-stabilized magnetic nickel nanochain (Ni-NC@PVP) have been reported by simple solvothermal method for potential cancer hyperthermia and catalytic applications.
An efficient removal of methyl violet from aqueous solution by an AC-Bi/ZnO nanocomposite material
Authors: Chandraboss V. L. , Kamalakkannan J. , Prabha S. , Senthilvelan S.
Published: February 2015

The hetero-junctions that are formed between the AC-Bi and ZnO, Bi provide an internal electric field that facilitates separation of the electron–hole pairs and induces faster carrier migration. Thus they often enhanced photocatalytic activity.
Electric-field-induced structural and electronic changes and decomposition of an energetic complex: a computational study on zinc carbohydrazide perchlorate crystals
Authors: Li Zhimin , Huang Huisheng , Zhang Tonglai , Zhang Guoqing , Zhang Fulan
Published: February 2015

The effects of electric field on the structure and decomposition mechanism of an energetic transition metal complex were theoretically studied for the first time.
Enhanced hydrogen evolution properties obtained by electrochemical modification of carbon-supported platinum–copper bimetallic nanocatalysts and structural characterization
Authors: Yang Yong , Yang Bin , Peng Jincai , Zhao Zhijing , Zhao Yumeng
Published: February 2015

The three-dimensional surface with high specific surface area after being electrochemically modified tremendously enhances Pt–Cu/C hydrogen evolution properties.
Electroforming and resistive switching in silicon dioxide resistive memory devices
Authors: Fowler Burt W. , Chang Yao-Feng , Zhou Fei , Wang Yanzhen , Chen Pai-Yu , Xue Fei , Chen Yen-Ting , Bringhurst Brad , Pozder Scott , Lee Jack C.
Published: February 2015

Electroforming and resistive switching data are presented and models are given addressing the unusual operating features of SiO2 resistive memory.
Non-covalently functionalizing a graphene framework by anthraquinone for high-rate electrochemical energy storage
Authors: An Ning , Zhang Fuhai , Hu Zhongai , Li Zhimin , Li Li , Yang Yuying , Guo Bingshu , Lei Ziqiang
Published: February 2015

Anthraquinone (AQ) with electrochemically reversible redox couples is selected to functionalize graphene framework (GF) through non-covalent modification and the composite achieves high specific capacitance, good rate capability and long cycle life.
Synthesis and characterization of novel thin film nanocomposite reverse osmosis membranes with improved organic fouling properties for water desalination
Authors: Ghanbari M. , Emadzadeh D. , Lau W. J. , Matsuura T. , Ismail A. F.
Published: February 2015

Incorporation of HNTs into PA layer improved not only the structural and separation characteristics of composite membrane but also its antifouling properties.
Preparation of a reduced graphene oxide hydrogel by Ni ions and its use in a supercapacitor electrode
Authors: Luan Van Hoang , Chung Jin Suk , Hur Seung Hyun
Published: February 2015

A three-dimensional (3D) reduced graphene oxide hydrogel (rGOH) was prepared by hydrothermal synthesis based on the electrostatic force and chemical reaction between graphene oxide (GO) and Ni ions in a nickel acetate solution.
Mechanism of oil molecules transportation in nano-sized shale channel: MD simulation
Authors: Xue Qingzhong , Tao Yehan , Liu Zilong , Lu Shuangfang , Li Xiaofang , Wu Tiantian , Jin Yakang , Liu Xuefeng
Published: February 2015

Driving oil molecules along nano-sized shale channels using nitrogen molecules: MD simulation.
Unsaturated aldehydes: a novel route for the synthesis of pyridine and 3-picoline
Authors: Luo Cai-Wu , Chao Zi-Sheng
Published: February 2015

The stability of the ZnO/HZSM-5-At-acid catalyst is significantly enhanced relative to the ZnO/HZSM-5 catalyst.
Student perceptions of learning data-creation and data-analysis skills in an introductory college-level chemistry course
Authors: Glazer Nirit
Published: February 2015

This study examines how students perceive their learning of creating and analyzing data in an introductory inquiry chemistry course at a college level that features oral presentations in student-centered discussions. A student Participant Perception Indicator (PPI) survey was administered in order to obtain data on student perceptions with respect to their own data-creation and data-analysis skills, which skills are essential for learning and understanding science. These student perceptions regarding gaining knowledge were consistently higher than their perceptions regarding gaining confidence and experience; however, both the confidence and the experience measures increased significantly as a semester progressed. Further, significant differences in student perceptions were found to exist between students who made oral presentations and students who did not. This finding strongly supports the active learning theory,i.e., learning by doing, and strongly encourages student participation in knowledge creation. Findings were also analyzed according to student demographics (gender, school) to determine patterns for different populations within the groups of students. Such analysis is important for instructors and for course designers to enable them to adjust their manner of teaching based on student demographic information in their classes, and to adjust the provided feedback and guidance, as needed.
Equilibrium gels of low-valence DNA nanostars: a colloidal model for strong glass formers
Authors: Biffi Silvia , Cerbino Roberto , Nava Giovanni , Bomboi Francesca , Sciortino Francesco , Bellini Tommaso
Published: February 2015

DNA-made colloids of low valence undergo strong-glass type transition with Arrhenius kinetic arrest.
Sensing cell adhesion using polydiacetylene-containing peptide amphiphile fibres
Authors: Ramakers B. E. I. , Bode S. A. , Killaars A. R. , van Hest J. C. M. , Löwik D. W. P. M.
Published: February 2015

Sensing cell adhesion by means of a colourimetric response provides an intuitive measure of cell binding.
One-step femtosecond laser patterning of light-trapping structure on dye-sensitized solar cell photoelectrodes
Authors: Zhang Xi , Liu Hewei , Huang Xuezhen , Jiang Hongrui
Published: February 2015

Light-trapping patterns constructed in TiO2 photoelectrodes by femtosecond laser ablation improve the efficiency of dye-sensitized solar cells by up to 13.5%.
Urine metabolomics reveals new insights into hyperlipidemia and the therapeutic effect of rhubarb
Authors: Chen Hua , Yuan Bin , Miao Hua , Tan Yi , Bai Xu , Zhao Ying-Yong , Wang Yun
Published: February 2015

Rhubarb has been widely used for the treatment of hyperlipidemia and blood stasis.
Cu-catalyzed asymmetric addition of sp2-hybridized zirconium nucleophiles to racemic allyl bromides
Authors: Sidera Mireia , Fletcher Stephen P.
Published: February 2015

Asymmetric allylic alkylation with sp2 hybridized zirconium nucleophiles via a dynamic kinetic transformation is reported.
Anomalous ligand effect in gold(i)-catalyzed intramolecular hydroamination of alkynes
Authors: Gaggioli Carlo Alberto , Ciancaleoni Gianluca , Biasiolo Luca , Bistoni Giovanni , Zuccaccia Daniele , Belpassi Leonardo , Belanzoni Paola , Tarantelli Francesco
Published: February 2015

The ligand electronic effect modifies in entirely unexpected ways the binding mode and effectiveness of gold(i) catalysts for alkyne hydroamination.
A comprehensive review on synthesis methods for transition-metal oxide nanostructures
Authors: Guo Ting , Yao Ming-Shui , Lin Yuan-Hua , Nan Ce-Wen
Published: February 2015

Recent developments of transition-metal oxide nanostructures with designed shape and dimensionality, including various synthesis methods and applications, are presented.
Quantifying the symmetry preferences of intermolecular interactions in organic crystal structures
Authors: Taylor Robin , Allen Frank H. , Cole Jason C.
Published: February 2015

Many intermolecular interactions show preferences for particular crystallographic symmetries and the extent to which this is the case is quantifiable.
Mechanism of hydrogen treatment in KTiOPO4 crystals at high temperature: experimental and first-principles studies
Authors: Zhang Yang , Leng Yanhua , Liu Jian , Ji Nianjing , Duan Xiulan , Li Jing , Zhao Xian , Wang Jiyang , Jiang Huaidong
Published: February 2015

The mechanism of coloration and oxygen vacancy formation in KTP crystals treated by hydrogen annealing was systematically investigated.
A procedure to find thermodynamic equilibrium constants for CO2 and CH4 adsorption on activated carbon
Authors: Trinh T. T. , van Erp T. S. , Bedeaux D. , Kjelstrup S. , Grande C. A.
Published: February 2015

Thermodynamic equilibrium for adsorption means that the chemical potential of gas and adsorbed phase are equal.
Efficient nitrogen-13 radiochemistry catalyzed by a highly stable immobilized biocatalyst
Authors: da Silva Eunice S. , Gómez-Vallejo Vanessa , Llop Jordi , López-Gallego Fernando
Published: February 2015

In the present work, an unprecedented strategy for the reduction of [13N]NO3− to [13N]NO2− using a heterogeneous biocatalyst will be presented.
2-Phenylbenzothiazole conjugated with cyclopentadienyl tricarbonyl [CpM(CO)3] (M = Re,99mTc) complexes as potential imaging probes for β-amyloid plaques
Authors: Jia Jianhua , Cui Mengchao , Dai Jiapei , Liu Boli
Published: February 2015

[CpM(CO)3] (M = Re,99mTc)-labeled 2-phenylbenzothiazoles designed by a conjugate approach were evaluated as SPECT tracers for Aβ plaques.
Novel reactions of homodinuclear Ni2complexes [Ni(RNPyS4)]2with Fe3(CO)12to give heterotrinuclear NiFe2and mononuclear Fe complexes relevant to [NiFe]- and [Fe]-hydrogenases
Authors: Song Li-Cheng , Cao Meng , Wang Yong-Xiang
Published: February 2015

The [RNPyS4]-type ligand-containing [NiFe]- and [Fe]-hydrogenase model complexes NiFe2(RNPyS4)(CO)5(2a–2e) and Fe(RNPyS4)(CO) (3a–3e) have been prepared and found to be catalysts for proton reduction to H2.
Efficient uptake of dimethyl sulfoxide by the desoxomolybdenum(iv) dithiolate complex containing bulky hydrophobic groups
Authors: Hasenaka Yuki , Okamura Taka-aki , Onitsuka Kiyotaka
Published: February 2015

A desoxomolybdenum(iv) complex containing bulky hydrophobic groups promoted the efficient uptake of Me2SO into the active center in a hydrophobic microenvironment.
Reaction mechanism for the highly efficient catalytic decomposition of peroxynitrite by the amphipolar iron(iii) corrole1-Fe
Authors: Avidan-Shlomovich Shlomit , Gross Zeev
Published: February 2015

The amphipolar iron(iii) corrole1-Feis one of the most efficient catalysts for the decomposition of peroxynitrite, the toxin involved in numerous diseases.
Selective etherification of β-citronellene catalyzed by zeolite beta
Authors: Radhakrishnan Sambhu , Purino Martin , Alexopoulos Konstantinos , Taulelle Francis , Reyniers Marie-Françoise , Marin Guy B. , Martens Johan A.
Published: February 2015

A continuous flow, liquid phase, heterogeneous catalytic process for chemoselective etherification of β-citronellene monoterpene using the zeolite beta catalyst.
Acyclic cucurbit[n]uril-type molecular containers: influence of glycoluril oligomer length on their function as solubilizing agents
Authors: Gilberg Laura , Zhang Ben , Zavalij Peter Y. , Sindelar Vladimir , Isaacs Lyle
Published: February 2015

A series of glycoluril molecular clips and acyclic CB[n]-type receptors are tested as solubilizing agents for insoluble drugs.
Accelerated synthesis of deca-dodecasil 3 rhombohedral (DDR3) zeolite crystals via hydrothermal growth coupled with ultrasonic irradiation method
Authors: Mubashir Muhammad , Yeong Yin Fong , Binti Mohamed Nazri Nur Syahirah , Lau Kok Keong
Published: February 2015

In the present work, DDR3 zeolite crystals were synthesized via hydrothermal heating coupled with ultrasonic irradiation method.
Ohmic contact of indium oxide as transparent electrode to n-type indium phosphide
Authors: Tang Xiufeng , Hseih Chunhan , Ou Fang , Ho Seng-Tiong
Published: February 2015

Ohmic contacts of n-type indium phosphide (n-InP) with indium oxide (In2O3), a transparent conducting oxide (TCO), have been achieved.
Bioinspired highly electrically conductive graphene–epoxy layered composites
Authors: Ming Peng , Zhang Yuanyuan , Bao Jianwen , Liu Gang , Li Zhou , Jiang Lei , Cheng Qunfeng
Published: February 2015

Inspired by the hierarchical structure of nacre, a new method was developed to fabricate highly electrically conductive graphene–epoxy layered composites.
Study of N-benzylidene derivatives synthesized as corrosion inhibitors for copper in HCl solution
Authors: Shabani-Nooshabadi Mehdi , Behpour Mohsen , Razavi Faezeh Sadat , Hamadanian Masood , Nejadshafiee Vajihe
Published: February 2015

Corrosion inhibition of the twoN-benzylidene derivative compounds, as corrosion inhibitors for copper in HCl 6.0 M have been studied by electrochemical methods such as potentiodynamic polarization measurements and EIS.
Hierarchical NiCo2O4 nanowire arrays on Ni foam as an anode for lithium-ion batteries
Authors: Chen Guanghui , Yang Juan , Tang Jingjing , Zhou Xiangyang
Published: February 2015

A facile two-step method is developed for large-scale growth of hierarchical mesoporous NiCo2O4 nanowire arrays on Ni foam with robust adhesion as a high performance electrode for lithium-ion batteries (LIBs).
Wearable temperature sensor based on graphene nanowalls
Authors: Yang Jun , Wei Dapeng , Tang Linlong , Song Xuefen , Luo Wei , Chu Jin , Gao Tianpeng , Shi Haofei , Du Chunlei
Published: February 2015

This work reports an ultrasensitive wearable temperature sensor based on GNWs/PDMS for personalized healthcare and human–machine interface systems.
Hierarchical NiMn2O4@CNT nanocomposites for high-performance asymmetric supercapacitors
Authors: Nan Honghong , Ma Wenqin , Gu Zhengxiang , Geng Baoyou , Zhang Xiaojun
Published: February 2015

Miniaturized energy storage devices have attracted considerable research attention due to their promising applications in various smart electronic devices.
Self-assembly and hydrogelation from multicomponent coassembly of pentafluorobenzyl-phenylalanine and pentafluorobenzyl-diphenylalanine
Authors: Hsu Shu-Min , Wu Fang-Yi , Lai Tsung-Sheng , Lin Yu-Chun , Lin Hsin-Chieh
Published: February 2015

To screen the possibility of forming self-assembled hydrogels under physiological pH, various molar ratios of the hydrogelators based on pentafluorobenzyl-phenylalanine (PFB-F) and pentafluorobenzyl-diphenylalanine (PFB-FF) were studied.
Crystallization ability of poly(lactic acid) block segments in templating poly(ethylene oxide-b-lactic acid) diblock copolymers affects the resulting structures of mesoporous silicas
Authors: Altukhov Oleksii , Kuo Shiao-Wei
Published: February 2015

Eliminating the crystallization ability of PLLA to amorphous PLA block segment allowed us to obtain long-range-ordered mesoporous materials.
Fabrication of spinel ferrite based alkaline anion exchange membrane water electrolysers for hydrogen production
Authors: Pandiarajan T. , John Berchmans L. , Ravichandran S.
Published: February 2015

Alkaline anion exchange membrane water electrolysis (AEMWE) is considered to be an alternative to proton exchange membrane water electrolysis (PEMWE), owing to the use of non-noble meta/metal oxides in AEMWE.
Polyoxometalate-based layered nano-tubular arrays: facile fabrication and superior performance for catalysis
Authors: Zhen Hongpeng , Li Xiaolin , Zhang Lijuan , Lei Huan , Yu Chao , Zhou Yunshan , Hassan Sadaf ul , Qin Libo , Asif Hafiz Muhammad
Published: February 2015

Keggin-type polyoxoanion PW12O403−-containing one-dimensional nano-tubular arrays fabricated within porous templates show a superior performance just through simple filtrating processes.
Regulating cell behaviors on micropillar topographies affected by interfacial energy
Authors: Gao Xinghua , Chau Yeung Yeung , Xie Jiao , Wan Jun , Ren Yanxiao , Qin Jianhua , Wen Weijia
Published: February 2015

Micropillar topographies can greatly influence the individual hepatic stellate cell behaviors, being triggered by a minimum interfacial energy.
Sequential radiation chemical reactions in aqueous bromide solutions: pulse radiolysis experiment and spur model simulation
Authors: Yamashita S. , Iwamatsu K. , Maehashi Y. , Taguchi M. , Hata K. , Muroya Y. , Katsumura Y.
Published: February 2015

Pulse radiolysis experiments were carried out to observe transient absorptions of reaction intermediates produced in N2O- and Ar-saturated aqueous solutions containing 0.9–900 mM NaBr.
Diverse reactivity of a tricoordinate organoboron L2PhB: (L = oxazol-2-ylidene) towards alkali metal, group 9 metal, and coinage metal precursors
Authors: Kong Lingbing , Ganguly Rakesh , Li Yongxin , Kinjo Rei
Published: February 2015

The reactivity of a tricoordinate organoboron L2PhB: (L = oxazol-2-ylidene) 1 towards metal precursors and its coordination chemistry were comprehensively studied.
Highly stable and reusable imprinted artificial antibody used for in situ detection and disinfection of pathogens
Authors: Zhang Zhijun , Guan Yijia , Li Meng , Zhao Andong , Ren Jinsong , Qu Xiaogang
Published: February 2015

We fabricate artificial antibodies based on imprinting technology and develop a sandwich ELISA for pathogen detection.
Covalent interaction enhanced electromagnetic wave absorption in SiC/Co hybrid nanowires
Authors: Wang Huan , Wu Lina , Jiao Jinfu , Zhou Jigang , Xu Yongjun , Zhang Hangyu , Jiang Zhaohua , Shen Baozhong , Wang Zhijiang
Published: February 2015

Covalently bonded SiC/Co hybrid nanowires have been fabricated. They present significantly increased electromagnetic absorption due to a synergistic coupling interaction.