bluuebunny/crossref_metadata_2025 huggingface dataset:
Tracing the sources and spatial distribution of organic carbon in subsoils using a multi-biomarker approach
Authors: Angst Gerrit , John Stephan , Mueller Carsten W. , Kögel-Knabner Ingrid , Rethemeyer Janet
Published: July 2016

Soil organic carbon (SOC) from aboveground and belowground sources has rarely been differentiated although it may drive SOC turnover and stabilization due to a presumed differing source dependent degradability. It is thus crucial to better identify the location of SOC from different sources for the parameterization of SOC models, especially in the less investigated subsoils. The aim of this study was to spatially assess contributions of organic carbon from aboveground and belowground parts of beech trees to subsoil organic carbon in a Dystric Cambisol. Different sources of SOC were distinguished by solvent-extractable and hydrolysable lipid biomarkers aided by 14C analyses of soil compartments <63 μm. We found no effect of the distance to the trees on the investigated parameters. Instead, a vertical zonation of the subsoil was detected. A high contribution of fresh leaf- and root-derived organic carbon to the upper subsoil (leaf- and root-affected zone) indicate that supposedly fast-cycling, leaf-derived SOC may still be of considerable importance below the A-horizon. In the deeper subsoil (root-affected zone), roots were an important source of fresh SOC. Simultaneously, strongly increasing apparent 14C ages (3860 yrs BP) indicate considerable contribution of SOC that may be inherited from the Pleistocene parent material.
4-aminopyridine reverses ataxia and cerebellar firing deficiency in a mouse model of spinocerebellar ataxia type 6
Authors: Jayabal Sriram , Chang Hui Ho Vanessa , Cullen Kathleen E. , Watt Alanna J.
Published: July 2016

Spinocerebellar ataxia type 6 (SCA6) is a devastating midlife-onset autosomal dominant motor control disease with no known treatment. Using a hyper-expanded polyglutamine (84Q) knock-in mouse, we found that cerebellar Purkinje cell firing precision was degraded in heterozygous (SCA684Q/+) mice at 19 months when motor deficits are observed. Similar alterations in firing precision and motor control were observed at disease onset at 7 months in homozygous (SCA684Q/84Q) mice, as well as a reduction in firing rate. We further found that chronic administration of the FDA-approved drug 4-aminopyridine (4-AP), which targets potassium channels, alleviated motor coordination deficits and restored cerebellar Purkinje cell firing precision to wildtype (WT) levels in SCA684Q/84Q mice both in acute slices and in vivo. These results provide a novel therapeutic approach for treating ataxic symptoms associated with SCA6.
Evolutionary pressures on microbial metabolic strategies in the chemostat
Authors: Wortel Meike T. , Bosdriesz Evert , Teusink Bas , Bruggeman Frank J.
Published: July 2016

Protein expression is shaped by evolutionary processes that tune microbial fitness. The limited biosynthetic capacity of a cell constrains protein expression and forces the cell to carefully manage its protein economy. In a chemostat, the physiology of the cell feeds back on the growth conditions, hindering intuitive understanding of how changes in protein concentration affect fitness. Here, we aim to provide a theoretical framework that addresses the selective pressures and optimal evolutionary-strategies in the chemostat. We show that the optimal enzyme levels are the result of a trade-off between the cost of their production and the benefit of their catalytic function. We also show that deviations from optimal enzyme levels are directly related to selection coefficients. The maximal fitness strategy for an organism in the chemostat is to express a well-defined metabolic subsystem known as an elementary flux mode. Using a coarse-grained, kinetic model of Saccharomyces cerevisiae’s metabolism and growth, we illustrate that the dynamics and outcome of evolution in a chemostat can be very counter-intuitive: Strictly-respiring and strictly-fermenting strains can evolve from a common ancestor. This work provides a theoretical framework that relates a kinetic, mechanistic view on metabolism with cellular physiology and evolutionary dynamics in the chemostat.
Quantum memristors
Authors: Pfeiffer P. , Egusquiza I. L. , Di Ventra M. , Sanz M. , Solano E.
Published: July 2016

Technology based on memristors, resistors with memory whose resistance depends on the history of the crossing charges, has lately enhanced the classical paradigm of computation with neuromorphic architectures. However, in contrast to the known quantized models of passive circuit elements, such as inductors, capacitors or resistors, the design and realization of a quantum memristor is still missing. Here, we introduce the concept of a quantum memristor as a quantum dissipative device, whose decoherence mechanism is controlled by a continuous-measurement feedback scheme, which accounts for the memory. Indeed, we provide numerical simulations showing that memory effects actually persist in the quantum regime. Our quantization method, specifically designed for superconducting circuits, may be extended to other quantum platforms, allowing for memristor-type constructions in different quantum technologies. The proposed quantum memristor is then a building block for neuromorphic quantum computation and quantum simulations of non-Markovian systems.
High-Quality Crystal Growth and Characteristics of AlGaN-Based Solar-Blind Distributed Bragg Reflectors with a Tri-layer Period Structure
Authors: Chang Jianjun , Chen Dunjun , Yang Lianhong , Liu Yanli , Dong Kexiu , Lu Hai , Zhang Rong , Zheng Youdou
Published: July 2016

To realize AlGaN-based solar-blind ultraviolet distributed Bragg reflectors (DBRs), a novel tri-layer AlGaN/AlInN/AlInGaN periodical structure that differs from the traditional periodically alternating layers of high- and low-refractive-index materials was proposed and grown on an Al0.5Ga0.5N template via metal-organic chemical vapour deposition. Because of the intentional design of the AlInGaN strain transition layer, a state-of-the-art DBR structure with atomic-level-flatness interfaces was achieved using an AlGaN template. The fabricated DBR exhibits a peak reflectivity of 86% at the centre wavelength of 274 nm and a stopband with a full-width at half-maximum of 16 nm.
Organic mediated synthesis of highly luminescent Li+ ion compensated Gd2O3:Eu3+ nanophosphors and their Judd–Ofelt analysis
Authors: Kumar R. G. Abhilash , Hata Satoshi , Ikeda Ken-ichi , Gopchandran K. G.
Published: July 2016

Highly luminescent Li+ ion compensated Gd2O3:Eu3+ nanophosphors, a potential candidate for photonic applications.
Cysteine determination via adsorptive stripping voltammetry using a bare glassy carbon electrode
Authors: Areias Madalena C. C. , Shimizu Kenichi , Compton Richard G.
Published: July 2016

Determination of cysteine by adsorptive stripping voltammetry at a bare GCE in an acidic electrolyte medium in the presence of copper(ii) ions.
Pyrene boronic acid cyclic ester: a new fast self-recovering mechanoluminescent material at room temperature
Authors: Wang Taisheng , Zhang Na , Zhang Ke , Dai Jingwen , Bai Wei , Bai Ruke
Published: July 2016

Pyrene boronic acid cyclic ester with a 5-membered ring possesses reversible mechano-luminescence behaviour with a fast self-recovering ability at room temperature.
Reaction cross sections and thermal rate constant for Cl− + CH3Br → ClCH3 + Br− from J-dependent quantum scattering calculations
Authors: Hennig Carsten , Schmatz Stefan
Published: July 2016

Employing dimensionality-reduced time-independent quantum scattering theory and summation over all possible total angular momentum states, initial-state selected reaction cross sections for the exothermic gas-phase bimolecular nucleophilic substitution (SN2) reaction Cl− + CH3Br → ClCH3 + Br− have been calculated.
Evaluation of the energy barrier for failure of Au atomic contact based on temperature dependent current–voltage characteristics
Authors: Aiba Akira , Kaneko Satoshi , Fujii Shintaro , Nishino Tomoaki , Kiguchi Manabu
Published: July 2016

Evaluation of the energy barrier for failure of Au atomic contact based on the current–voltage characteristics as a function of sample temperature.
Radical attached aluminum nanoclusters: an alternative way of cluster stabilization
Authors: Sengupta Turbasu , Pal Sourav
Published: July 2016

The stability and electronic structure of radical attached aluminum nanoclusters are investigated using density functional theory (DFT). A comparison of thermodynamic stability and other related factors with ligated clusters is also included.
Excited states in large molecular systems through polarizable embedding
Authors: List Nanna Holmgaard , Olsen Jógvan Magnus Haugaard , Kongsted Jacob
Published: July 2016

Using the polarizable embedding model enables rational design of light-sensitive functional biological materials.
Exploration of the presence of bulk-like water in AOT reverse micelles and water-in-oil nanodroplets: the role of charged interfaces, confinement size and properties of water
Authors: Hande Vrushali R. , Chakrabarty Suman
Published: July 2016

We show that the distance from the interface at which bulk-like properties are recovered strongly depends on the choice of order parameter being probed: translational < tetrahedral ≪ dipolar orientation.
Correction: Number density distribution of solvent molecules on a substrate: a transform theory for atomic force microscopy
Authors: Amano Ken-ichi , Liang Yunfeng , Miyazawa Keisuke , Kobayashi Kazuya , Hashimoto Kota , Fukami Kazuhiro , Nishi Naoya , Sakka Tetsuo , Onishi Hiroshi , Fukuma Takeshi
Published: July 2016

Correction for ‘Number density distribution of solvent molecules on a substrate: a transform theory for atomic force microscopy’ by Ken-ichi Amano et al., Phys. Chem. Chem. Phys., 2016, 18, 15534–15544.
Selective Cu4Pd alloy nanoparticles anchoring on amine functionalized graphite nanosheets and their use as reusable catalysts for a C–C coupling reaction with the sacrificial role of Cu for Pd-regeneration
Authors: Chakravarty Amrita , De Goutam
Published: July 2016

Cu4Pd nanoparticles have been anchored on amine functionalized graphite nanosheets and the composite has been used in C–C coupling with a sacrificial role of Cu for regeneration of metallic Pd.
Pb5Ga6ZnS15: a noncentrosymmetric framework with chains of T2-supertetrahedra
Authors: Duan Rui-Huan , Yu Ju-Song , Lin Hua , Zheng Yu-Jun , Zhao Hua-Jun , Huang-Fu Shang-Xiong , Khan Muhammad Ali , Chen Ling , Wu Li-Ming
Published: July 2016

Pb5Ga6ZnS15: a noncentrosysmmetric sulfide with a previously unobserved three-dimensional structure was synthesized for the first time.
Evaluation of a high nutritional quality snack based on oat flakes and inulin: effects on postprandial glucose, insulin and ghrelin responses of healthy subjects
Authors: Stamataki Nikoleta S. , Nikolidaki Eirini K. , Yanni Amalia E. , Stoupaki Maria , Konstantopoulos Panagiotis , Tsigkas Alexandros-Pantelis , Perrea Despoina , Tentolouris Nikolaos , Karathanos Vaios T.
Published: July 2016

A low GI snack with satiety promoting effects.
A facile and fast method for quantitating lignin in lignocellulosic biomass using acidic lithium bromide trihydrate (ALBTH)
Authors: Li Ning , Pan Xuejun , Alexander Jane
Published: July 2016

A facile (one-step) and fast (30 min) method (ALBTH) was developed to quantitate lignin in lignocellulosic biomass; the method gave comparable results with the Klason method.
Twelve different types of data normalization for the proposition of classification, univariate and multivariate regression models for the direct analyses of alloys by laser-induced breakdown spectroscopy (LIBS)
Authors: Castro Jeyne Pricylla , Pereira-Filho Edenir Rodrigues
Published: July 2016

Emission signal normalization in LIBS for the direct analysis of metal samples aiming at the determination of 10 analytes (Al, Cr, Cu, Fe, Mn, Mo, Ni, Ti, V and Zn).
Cell-on-hydrogel platform made of agar and alginate for rapid, low-cost, multidimensional test of antimicrobial susceptibility
Authors: Sun Han , Liu Zhengzhi , Hu Chong , Ren Kangning
Published: July 2016

Incorporating microfluidics into plate culture, this inexpensive platform generates stable 2D gradients of drugs for testing their synergistic effects. Culturing sample on top of the device eliminates the concern of shear flow, enables convenient collection of cells, and allows quick test based on single-cell image analysis.
The impact of probe size on measurements of diffusion in active microrheology
Authors: Hoh Nicholas J. , Zia Roseanna N.
Published: July 2016

A framework to study the influence of polydispersity on flow-induced diffusion in active microrheology is presented. It is found that diffusive behavior is set entirely and dually by the proximity with which two particles can approach one another, and by the extent to which this minimum approach distance is occupied by the hydrodynamic size of the forced particle.
Turn-on detection of pesticides via reversible fluorescence enhancement of conjugated polymer nanoparticles and thin films
Authors: Talbert William , Jones Daniel , Morimoto Joshua , Levine Mindy
Published: July 2016

Pesticide detection via fluorescence enhancements of nanoparticles enables the sensitive and selective detection of DDT and its metabolites/co-occurring analogues.
Enhanced mechanical properties and thermal stability of PSMA by functionalized graphene nanosheets
Authors: Chen Pengpeng , Deng Guoqing , Hu Donghua , Wang Yuan , Meng Zhen , Hua Wenwen , Xi Kai
Published: July 2016

PSMA was composited with graphene. The homogeneous dispersion of graphene nanosheets in PSMA matrix was achieved via the modification of APTS, and the storage modulus and thermal stability of PSMA was improved simultaneously.
Hydrogen abstraction of carbon/phosphorus-containing radicals in photoassisted polymerization
Authors: Zhou Hua , Huang Yugang , Zhang Yun , Song Dandan , Huang Hong , Zhong Cheng , Ye Guodong
Published: July 2016

Free-radical-promoted photopolymerization has successfully improved the curing performance in cationic photopolymerization and is now employed in promoted autoxidation.
Effect of the thickness of the ZnO buffer layer on the properties of electrodeposited p-Cu2O/n-ZnO/n-AZO heterojunctions
Authors: Lahmar Halla , Azizi Amor , Schmerber Guy , Dinia Aziz
Published: July 2016

Transparent conducting Cu2O/non-doped ZnO/Al-doped ZnO/FTO heterojunction solar cells were fabricated by a three-step electrodeposition; with non-doped ZnO film as a buffer layer between-AZO thin film and p-Cu2O nanostructure.
Effects of cholic acid modified glucosamine on chondrogenic differentiation
Authors: Xue Jingchen , Song Wenjing , Yao Hang , Hou Sirun , Liu Sa , Wang Yingjun , Pei Duanqing , Zhu Xiaoxia , Qin Dajiang , Ren Li
Published: July 2016

Glucosamine hydrochloride is a widely used drug for the treatment of osteoarthritis and can be easily modified by other molecules because of its alterable functional groups.
Red-emitting, EtTP-5-based organic nanoprobes for two-photon imaging in 3D multicellular biological models
Authors: Pinkerton Nathalie M. , Frongia Céline , Lobjois Valérie , Wilson Brian K. , Bruzek Matthew J. , Prud'homme Robert K. , Anthony John , Bolze Frédéric , Chassaing Stefan
Published: July 2016

Biocompatible and biostable EtTP-5-loaded organic core–shell nanoparticles have been successfully evaluated for their potential as red-emitting fluorescent nanoprobes for two-photon imaging.
A review on the effect of bioethanol dilution on the properties and performance of automotive lubricants in gasoline engines
Authors: Khuong L. S. , Zulkifli N. W. M. , Masjuki H. H. , Mohamad E. Niza , Arslan A. , Mosarof M. H. , Azham A.
Published: July 2016

Owing to the growing concern over the depletion of fossil fuels and the rising rate of greenhouse gas emissions which will lead to global warming, many researchers are now dedicated to producing biofuels in order to solve the above-mentioned issues.
Synthesis of MoP decorated carbon cloth as a binder-free electrode for hydrogen evolution
Authors: Deng Chen , Xie Jiangzhou , Xue Yifei , He Meng , Wei Xiaotong , Yan Yi-Ming
Published: July 2016

Electrocatalysts play a vital role in electrochemical water-splitting for hydrogen production.
Soy-castor oil based polyurethanes with octaphenylsilsesquioxanetetraol double-decker silsesquioxane in the main chains
Authors: Huang Jie , Jiang Pingping , Wen Yue , Deng Jianneng , He Jian
Published: July 2016

In these DDSQ-containing hybrid polyurethanes, DDSQ cages in the main chain act as the nanosized crosslinkers to participate in the formation of polymer networks.
Graphene oxide modified metallic lithium electrode and its electrochemical performances in lithium–sulfur full batteries and symmetric lithium–metal coin cells
Authors: Zhang Yi-jun , Xia Xin-hui , Wang Xiu-li , Gu Chang-dong , Tu Jiang-ping
Published: July 2016

In this work, GO layers are successfully fabricated on the surface of lithium metal by a facile automatic spreading method. The GO/Li electrode displays enhanced electrochemical performances than the unmodified pure Li electrode.
Natural eggshell membrane as separator for improved coulombic efficiency in air-cathode microbial fuel cells
Authors: Ma Ming , You Shijie , Qu Jiuhui , Ren Nanqi
Published: July 2016

Waste eggshell membranes are in situ used as separators in MFCs for remarkably enhanced coulombic efficiency of 67.14–95.03%.
Blue thermally activated delayed fluorescent emitters having a bicarbazole donor moiety
Authors: Kim Hyeong Min , Choi Jeong Min , Lee Jun Yeob
Published: July 2016

Two 3,3′-bicarbazole donor based TADF emitters provided high quantum efficiency above 23% in blue delayed fluorescent devices.
Hexaphenylbenzene and hexabenzocoronene-based porous polymers for the adsorption of volatile organic compounds
Authors: Karunathilake Arosha A. K. , Chang James , Thompson Christina M. , Nguyen Cathy U. , Nguyen Dorothy Q. , Rajan Aditya , Sridharan Anjali , Vyakaranam Megha , Adegboyega Nathaniel , Kim Sung Joon , Smaldone Ronald A.
Published: July 2016

Here we report the vapor adsorption properties of two novel hexaphenylbenzene and hexabenzocoronene-based porous polymers which display excellent affinity for organic compounds (up to 100 wt%) and selectivity over water (<1 wt%).
Fabrication of micro/nanostructured α-Fe2O3 hollow spheres: effect of electric field on the morphological, magnetic and photocatalytic properties
Authors: Kant Rich , Kumar Neetesh , Dutta Viresh
Published: July 2016

Continuous fabrication of α-Fe2O3 hollow spheres with sponge like morphology using an electric field assisted (by applying DC voltage) continuous spray pyrolysis (CoSP) technique.
Mass spectrometric snapshots for electrochemical reactions
Authors: Qiu Ran , Zhang Xin , Luo Hai , Shao Yuanhua
Published: July 2016

A hybrid microelectrode can connect MS and electrochemical reactions, providing direct information on products or intermediates to identify the reaction mechanisms with easy use and low cost.
Self-assembly of colloidal micelles in microfluidic channels
Authors: Nikoubashman Arash
Published: July 2016

The self-assembly of amphiphilic Janus colloids in microfluidic channels under Poiseuille flow is studied using computer simulations. The aggregates grow in the weakly sheared channel center, whereas a distinct cluster breakup occurs in strongly sheared channel regions.
Self-assembly synthesis of CuSe@graphene–carbon nanotubes as efficient and robust oxygen reduction electrocatalysts for microbial fuel cells
Authors: Tan Liang , Li Nan , Chen Shuang , Liu Zhao-Qing
Published: July 2016

The interconnected hierarchical architecture and synergistic effect lead to the superior ORR catalytic performance and MFCs ability of CuSe@rGO-CNTs.
Toward enhanced activity of a graphitic carbon nitride-based electrocatalyst in oxygen reduction and hydrogen evolution reactions via atomic sulfur doping
Authors: Pei Zengxia , Zhao Jingxiang , Huang Yan , Huang Yang , Zhu Minshen , Wang Zifeng , Chen Zhongfang , Zhi Chunyi
Published: July 2016

Component matters: a sulfur-doping protocol is proven to be efficient in boosting the performances of g-C3N4as an electrocatalyst in ORR and HER.
The cross-substitution effect of tantalum on the visible-light-driven water oxidation activity of BaNbO2N crystals grown directly by an NH3-assisted flux method
Authors: Hojamberdiev Mirabbos , Zahedi Ehsan , Nurlaela Ela , Kawashima Kenta , Yubuta Kunio , Nakayama Masanobu , Wagata Hajime , Minegishi Tsutomu , Domen Kazunari , Teshima Katsuya
Published: July 2016

The cross-substitution effect of tantalum on the photocatalytic water oxidation activity of BaNbO2N crystals grown by a flux method was investigated.
Solvent- and catalyst-free mechanochemical synthesis of alkali metal monohydrides
Authors: Hlova Ihor Z. , Castle Andra , Goldston Jennifer F. , Gupta Shalabh , Prost Timothy , Kobayashi Takeshi , Scott Chumbley L. , Pruski Marek , Pecharsky Vitalij K.
Published: July 2016

A simple, highly efficient and environmentally benign mechanochemical process is described for potentially scalable synthesis of catalyst and additive-free alkali-metal hydrides at room-temperature.
Well-dispersed and porous FeP@C nanoplates with stable and ultrafast lithium storage performance through conversion reaction mechanism
Authors: Han Fei , Zhang Chengzhi , Yang Jianxiao , Ma Guozhi , He Kejian , Li Xuanke
Published: July 2016

Conformally carbon-coated FeP (FeP@C) nanoplates with abundant inner mesopores exhibit an extremely superior electrochemical performance for lithium-ion batteries.
Expeditious and eco-friendly fabrication of highly uniform microflower superstructures and their applications in highly durable methanol oxidation and high-performance supercapacitors
Authors: Radhakrishnan Sivaprakasam , Kim Hak-Yong , Kim Byoung-Suhk
Published: July 2016

It is important to exploit copper sulfide products with desired structures as well as their potential applications owing to their simple synthesis, low cost and low toxicity.
Hierarchical carbon and nitrogen adsorbed PtNiCo nanocomposites with multiple active sites for oxygen reduction and methanol oxidation reactions
Authors: Wang Qin , Zhao Qi , Su Yiguo , Zhang Geng , Xu Guangran , Li Yingjun , Liu Baocang , Zheng Dafang , Zhang Jun
Published: July 2016

Hierarchical carbon and nitrogen adsorbed PtNiCo nanocomposites with different morphologies and facets were successfully synthesizedviaa solvothermal method and showed high electrochemical activity and long-term stability towards the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR).
Thiol–epoxy/maleimide ternary networks as softening substrates for flexible electronics
Authors: Reit Radu , Abitz Haley , Reddy Neel , Parker Shelbi , Wei Andrew , Aragon Nicole , Ho Milan , Weittenhiller Aaron , Kang Tong , Ecker Melanie , Voit Walter E.
Published: July 2016

Thiol–epoxy/maleimide ternary thermosetting networks are prepared and characterized in vitro as responsive substrates for applications in bioelectronic medicines.
Graphene and the related conductive inks for flexible electronics
Authors: Yang Wendong , Wang Changhai
Published: July 2016

The development of graphene and graphene hybrid inks is reviewed, with particular focus on their formulation, properties and applications. Please note this image is selected from Y. Gao, W. Shi, W. Wang, Y. Leng and Y. Zhao, Ind. Eng. Chem. Res., 2014, 53, 16777.
Tunable structural and magnetic properties of chemically synthesized dual-phase Co2NiGa nanoparticles
Authors: Wang Changhai , Levin Aleksandr A. , Fabbrici Simone , Nasi Lucia , Karel Julie , Qian Jinfeng , Viol Barbosa Carlos E. , Ouardi Siham , Albertini Franca , Schnelle Walter , Borrmann Horst , Fecher Gerhard H. , Felser Claudia
Published: July 2016

The chemically tuned structural and magnetic properties of dual-phase Co2NiGa shape memory Heusler nanoparticles.
Lead-free Bi5−xLaxTi3FeO15 (x = 0, 1) nanofibers toward wool keratin-based biocompatible piezoelectric nanogenerators
Authors: Zhao Yuwei , Fan Huiqing , Ren Xiaohu , Long Changbai , Liu Guocai , Liu Zhiyong
Published: July 2016

Biocompatible nanogenerators (NGs) are of vital importance for in vivo applications.
Water dispersed fluorescent organic aggregates for the picomolar detection of ClO4−in water, soil and blood serum and the attogram detection of ClO4−in the solid state by a contact mode method
Authors: Kumar Rahul , Sandhu Sana , Singh Prabhpreet , Kumar Subodh
Published: July 2016

An aggregation–disaggregation based molecular probe allows the detection of 10 pM ClO4−in solution and 6 × 10−18g cm−2ClO4−in the solid state by a contact mode method with a selectivity of ∼10 000 over other inorganic anions.
Big Data: „Datenschutz ist was für Gesunde“
Authors: Gaede Kirsten
Published: July 2016

Big Data war lange Spielwiese von Informatikern. Doch jetzt interessieren sich immer mehr Klinikmanager für das Thema. Einer von ihnen ist UKSH-Chef Jens Scholz. Er wird auf dem Gesundheitswirtschaftskongress in Hamburg unter anderem mit Barbara Böttcher von IBM über Digitalisierung diskutieren.
Meldepflicht bei MRE: Aber bitte mit Namen …
Authors: Hohnstein Aileen
Published: July 2016

Seit Anfang Mai gilt eine neue Pflichtverordnung zum Infektionsschutzgesetz.
Haarige Entlassmedikation
Authors: Häser Isabel
Published: July 2016

Der GBA hat Änderungen der Arzneimittelrichtlinie (AM-RL) zur Entlassmedikation beschlossen. Leider werfen die Regelungen weitere Fragen auf.
Gründungsmythen: Wenn zwei Freunde sich selbstständig machen …
Authors: Gaede Kirsten
Published: July 2016

Bevor eine Zeitschrift auf den Markt kommt, betreiben die Verleger in der Regel Marktforschung und lassen das Projekt diverse Runden durch die Entwicklungsabteilung drehen. Ganz anders war es bei der kma.
Eine Gelegenheitsleserin wird zur Herausgeberin: kma macht süchtig
Authors: Napp Barbara
Published: July 2016

Die kma entdeckte ich im Rahmen eines Managementseminars. Der Dozent erzählte in der Pause, dass man die Neuigkeiten aus der Gesundheitswirtschaft – insbesondere die Positionswechsel – am besten auf kma-online erfahren könnte.
cdgw: Willkommen im Club
Authors: Herrmann Peter
Published: July 2016

Als der Club der Gesundheitswirtschaft (cdgw) 2007 aus der Taufe gehoben wurde, spielte kma-Gründer Gunter Murzin eine entscheidende Rolle. Die Nachricht vom neuen Club auf kma-online überrumpelte selbst den heutigen Präsidenten Peter Herrmann (I-Solutions Health). Der cdgw-Präsident erinnert sich.
Finanzielle Zuschüsse für kommunale Kliniken: „Fairer Wettbewerb ist das nicht“
Authors: Gaede Kirsten , Paquet Robert , Doelfs Guntram
Published: July 2016

Dürfen Kommunen oder Landkreise dauerhaft Defizite ihrer eigenen Krankenhäuser mit Steuergeldern ausgleichen? Nein, sagen private Träger und verklagten den Landkreis Calw. Seit drei Jahren beschäftigt der Streit die Gerichte, jüngst sogar den Bundesgerichtshof. kma lud die Kontrahenten zum Streitgespräch.
Elektronische Fallakte: Nie wieder MDK-Fristen versäumen
Authors: König Romy
Published: July 2016

Auf jede zehnte Klinikrechnung setzen Kassen mittlerweile den MDK an, jede zweite davon wird von den Prüfern beanstandet. Eine neue IT-Plattform will nun die Abwicklung der Streitfälle für Kliniken und MDK erleichtern. Als Basis dient eine alte Bekannte: die elektronische Fallakte.
Contra Outsourcing: Lean Management statt Fremdvergabe
Authors: Fastenmeier Heribert
Published: July 2016

Im Zuge schärferer Qualitätskontrollen konzentrieren sich deutsche Kliniken zunehmend auf das Kerngeschäft. Um Kosten zu senken, überlassen Klinikmanager die scheinbar weniger wichtigen Aufgaben daher gerne externen Dienstleisten. Nicht immer mit dem gewünschten Ergebnis, warnt der Geschäftsführer des Klinikums Ingolstadt.
BuFaTa 2016 auf dem Klinikkongress Ruhr: Digitalisierung – Segen oder Fluch?
Authors: Thalmayr Maria
Published: July 2016

Die Digitalisierung des Gesundheitswesens stellt deutlich vereinfachte Abläufe in Aussicht und neue medizinische Möglichkeiten. Auf der Kehrseite der Medaille erzeugt sie technische Herausforderungen und Risiken. Strategien zu deren Bewältigung beziehungsweise Beherrschung sind Schwerpunkte der diesjährigen Bundesfachtagung am 7. und 8. September auf dem Klinikkongress Ruhr.
Zum Tod von Prof. Dr. Christoph Hartung: Technik zusammenhalten
Authors: Thalmayr Maria
Published: July 2016

Er war eine Respektsperson, ist vielleicht das Erste, was einem zu Prof. Dr. Christoph Hartung in den Sinn kommt. Gespeist wurde diese allgemeine Hochachtung nicht etwa durch eine besonders strenge Attitüde, vielmehr war es ein unerschöpflich scheinendes Fachwissen gepaart mit unanfechtbarer wissenschaftlicher Kompetenz, die einen vor Christoph Hartung strammstehen ließ.
Energie im Krankenhaus 2016: Ambitioniert handeln
Authors: Thalmayr Maria
Published: July 2016

Die Forderungen des Energieeffizienzgesetzes sollten weniger als Casting Show denn als Chance begriffen werden, sich nachhaltig zu verbessern, erklärte der Energiemanager Roland Gumpoltsberger auf dem diesjährigen Kongress „Energie im Krankenhaus“. Sein Aufruf, das Klima ambitionierter zu schützen, wurde zum Leitmotiv der Veranstaltung.
Invited Article: Topological crystalline protection in a photonic system
Authors: Zhang Jian-Xiao , Rechtsman Mikael C. , Liu Chao-Xing
Published: July 2016

Topological crystalline insulators are a class of materials with a bulk energy gap and edge or surface modes, which are protected by crystalline symmetry, at their boundaries. They have been realized in electronic systems: in particular, in SnTe. In this work, we propose a mechanism to realize photonic boundary states topologically protected by crystalline symmetry. We map this one-dimensional system to a two-dimensional lattice model with opposite magnetic fields, as well as opposite Chern numbers in its even and odd mirror parity subspaces, thus corresponding to a topological mirror insulator. Furthermore, we test the robustness of the boundary modes depending on their mirror parity by performing time dependent evolution simulations in a photonic setting with realistic experimental parameters.
A 5 kA pulsed power supply for inductive and plasma loads in large volume plasma device
Authors: Srivastava P. K. , Singh S. K. , Sanyasi A. K. , Awasthi L. M. , Mattoo S. K.
Published: July 2016

This paper describes 5 kA, 12 ms pulsed power supply for inductive load of Electron Energy Filter (EEF) in large volume plasma device. The power supply is based upon the principle of rapid sourcing of energy from the capacitor bank (2.8 F/200 V) by using a static switch, comprising of ten Insulated Gate Bipolar Transistors (IGBTs). A suitable mechanism is developed to ensure equal sharing of current and uniform power distribution during the operation of these IGBTs. Safe commutation of power to the EEF is ensured by the proper optimization of its components and by the introduction of over voltage protection (>6 kV) using an indigenously designed snubber circuit. Various time sequences relevant to different actions of power supply, viz., pulse width control and repetition rate, are realized through optically isolated computer controlled interface.
Particle mobility between two planar elastic membranes: Brownian motion and membrane deformation
Authors: Daddi-Moussa-Ider Abdallah , Guckenberger Achim , Gekle Stephan
Published: July 2016

We study the motion of a solid particle immersed in a Newtonian fluid and confined between two parallel elastic membranes possessing shear and bending rigidity. The hydrodynamic mobility depends on the frequency of the particle motion due to the elastic energy stored in the membrane. Unlike the single-membrane case, a coupling between shearing and bending exists. The commonly used approximation of superposing two single-membrane contributions is found to give reasonable results only for motions in the parallel direction, but not in the perpendicular direction. We also compute analytically the membrane deformation resulting from the motion of the particle, showing that the presence of the second membrane reduces deformation. Using the fluctuation-dissipation theorem we compute the Brownian motion of the particle, finding a long-lasting subdiffusive regime at intermediate time scales. We finally assess the accuracy of the employed point-particle approximation via boundary-integral simulations for a truly extended particle. They are found to be in excellent agreement with the analytical predictions.
Accurate Monte Carlo simulations on FCC and HCP Lennard-Jones solids at very low temperatures and high reduced densities up to 1.30
Authors: Adidharma Hertanto , Tan Sugata P.
Published: July 2016

Canonical Monte Carlo simulations on face-centered cubic (FCC) and hexagonal closed packed (HCP) Lennard-Jones (LJ) solids are conducted at very low temperatures (0.10 ≤ T∗ ≤ 1.20) and high densities (0.96 ≤ ρ∗ ≤ 1.30). A simple and robust method is introduced to determine whether or not the cutoff distance used in the simulation is large enough to provide accurate thermodynamic properties, which enables us to distinguish the properties of FCC from that of HCP LJ solids with confidence, despite their close similarities. Free-energy expressions derived from the simulation results are also proposed, not only to describe the properties of those individual structures but also the FCC-liquid, FCC-vapor, and FCC-HCP solid phase equilibria.
Electric field dynamics in nitride structures containing quaternary alloy (Al, In, Ga)N
Authors: Borysiuk J. , Sakowski K. , Dróżdż P. , Korona K. P. , Sobczak K. , Muziol G. , Skierbiszewski C. , Kaminska A. , Krukowski S.
Published: July 2016

Molecular beam epitaxy growth and basic physical properties of quaternary AlInGaN layers, sufficiently thick for construction of electron blocking layers (EBL), embedded in ternary InGaN layers are presented. Transmission electron microscopy (TEM) measurement revealed good crystallographic structure and compositional uniformity of the quaternary layers contained in other nitride layers, which are typical for construction of nitride based devices. The AlInGaN layer was epitaxially compatible to InGaN matrix, strained, and no strain related dislocation creation was observed. The strain penetrated for limited depth, below 3 nm, even for relatively high content of indium (7%). For lower indium content (0.6%), the strain was below the detection limit by TEM strain analysis. The structures containing quaternary AlInGaN layers were studied by time dependent photoluminescence (PL) at different temperatures and excitation powers. It was shown that PL spectra contain three peaks: high energy donor bound exciton peak from the bulk GaN (DX GaN) and the two peaks (A and B) from InGaN layers. No emission from quaternary AlInGaN layers was observed. An accumulation of electrons on the EBL interface in high-In sample and formation of 2D electron gas (2DEG) was detected. The dynamics of 2DEG was studied by time resolved luminescence revealing strong dependence of emission energy on the 2DEG concentration. Theoretical calculations as well as power-dependence and temperature-dependence analysis showed the importance of electric field inside the structure. At the interface, the field was screened by carriers and could be changed by illumination. From these measurements, the dynamics of electric field was described as the discharge of carriers accumulated on the EBL.
Synchronization of multi-agent systems with metric-topological interactions
Authors: Wang Lin , Chen Guanrong
Published: July 2016

A hybrid multi-agent systems model integrating the advantages of both metric interaction and topological interaction rules, called the metric-topological model, is developed. This model describes planar motions of mobile agents, where each agent can interact with all the agents within a circle of a constant radius, and can furthermore interact with some distant agents to reach a pre-assigned number of neighbors, if needed. Some sufficient conditions imposed only on system parameters and agent initial states are presented, which ensure achieving synchronization of the whole group of agents. It reveals the intrinsic relationships among the interaction range, the speed, the initial heading, and the density of the group. Moreover, robustness against variations of interaction range, density, and speed are investigated by comparing the motion patterns and performances of the hybrid metric-topological interaction model with the conventional metric-only and topological-only interaction models. Practically in all cases, the hybrid metric-topological interaction model has the best performance in the sense of achieving highest frequency of synchronization, fastest convergent rate, and smallest heading difference.
Multiple stimulated emission fluorescence photoacoustic sensing and spectroscopy
Authors: Li Gaoming , Gao Fei , Qiu Yishen , Feng Xiaohua , Zheng Yuanjin
Published: July 2016

Multiple stimulated emission fluorescence photoacoustic (MSEF-PA) phenomenon is demonstrated in this letter. Under simultaneous illumination of pumping light and stimulated emission light, the fluorescence emission process is speeded up by the stimulated emission effect. This leads to nonlinear enhancement of photoacoustic signal while the quantity of absorbed photons is more than that of fluorescent molecules illuminated by pumping light. The electronic states' specificity of fluorescent molecular can also be labelled by the MSEF-PA signals, which can potentially be used to obtain fluorescence excitation spectrum in deep scattering tissue with nonlinearly enhanced photoacoustic detection. In this preliminary study, the fluorescence excitation spectrum is reconstructed by MSEF-PA signals through sweeping the wavelength of exciting light, which confirms the theoretical derivation well.
Hydrodynamics of sediment threshold
Authors: Ali Sk Zeeshan , Dey Subhasish
Published: July 2016

A novel hydrodynamic model for the threshold of cohesionless sediment particle motion under a steady unidirectional streamflow is presented. The hydrodynamic forces (drag and lift) acting on a solitary sediment particle resting over a closely packed bed formed by the identical sediment particles are the primary motivating forces. The drag force comprises of the form drag and form induced drag. The lift force includes the Saffman lift, Magnus lift, centrifugal lift, and turbulent lift. The points of action of the force system are appropriately obtained, for the first time, from the basics of micro-mechanics. The sediment threshold is envisioned as the rolling mode, which is the plausible mode to initiate a particle motion on the bed. The moment balance of the force system on the solitary particle about the pivoting point of rolling yields the governing equation. The conditions of sediment threshold under the hydraulically smooth, transitional, and rough flow regimes are examined. The effects of velocity fluctuations are addressed by applying the statistical theory of turbulence. This study shows that for a hindrance coefficient of 0.3, the threshold curve (threshold Shields parameter versus shear Reynolds number) has an excellent agreement with the experimental data of uniform sediments. However, most of the experimental data are bounded by the upper and lower limiting threshold curves, corresponding to the hindrance coefficients of 0.2 and 0.4, respectively. The threshold curve of this study is compared with those of previous researchers. The present model also agrees satisfactorily with the experimental data of nonuniform sediments.
First principles prediction of amorphous phases using evolutionary algorithms
Authors: Nahas Suhas , Gaur Anshu , Bhowmick Somnath
Published: July 2016

We discuss the efficacy of evolutionary method for the purpose of structural analysis of amorphous solids. At present, ab initio molecular dynamics (MD) based melt-quench technique is used and this deterministic approach has proven to be successful to study amorphous materials. We show that a stochastic approach motivated by Darwinian evolution can also be used to simulate amorphous structures. Applying this method, in conjunction with density functional theory based electronic, ionic and cell relaxation, we re-investigate two well known amorphous semiconductors, namely silicon and indium gallium zinc oxide. We find that characteristic structural parameters like average bond length and bond angle are within ∼2% of those reported by ab initio MD calculations and experimental studies.
Feasibility of graphene CRLH metamaterial waveguides and leaky wave antennas
Authors: Chu Derrick A. , Hon Philip W. C. , Itoh Tatsuo , Williams Benjamin S.
Published: July 2016

The feasibility of composite right/left-handed (CRLH) metamaterial waveguides based upon graphene plasmons is demonstrated via numerical simulation. Designs are presented that operate in the terahertz frequency range along with their various dimensions. Dispersion relations, radiative and free-carrier losses, and free-carrier based tunability are characterized. Finally, the radiative characteristics are evaluated, along with its feasibility for use as a leaky-wave antenna. While CRLH waveguides are feasible in the terahertz range, their ultimate utility will require precise nanofabrication, and excellent quality graphene to mitigate free-carrier losses.
Thermal relaxation of molecular oxygen in collisions with nitrogen atoms
Authors: Andrienko Daniil A. , Boyd Iain D.
Published: July 2016

Investigation of O2–N collisions is performed by means of the quasi-classical trajectory method on the two lowest ab initio potential energy surfaces at temperatures relevant to hypersonic flows. A complete set of bound–bound and bound–free transition rates is obtained for each precollisional rovibrational state. Special attention is paid to the vibrational and rotational relaxations of oxygen as a result of chemically non-reactive interaction with nitrogen atoms. The vibrational relaxation of oxygen partially occurs via the formation of an intermediate NO2 complex. The efficient energy randomization results in rapid vibrational relaxation at low temperatures, compared to other molecular systems with a purely repulsive potential. The vibrational relaxation time, computed by means of master equation studies, is nearly an order of magnitude lower than the relaxation time in N2–O collisions. The rotational nonequilibrium starts to play a significant effect at translational temperatures above 8000 K. The present work provides convenient relations for the vibrational and rotational relaxation times as well as for the quasi-steady dissociation rate coefficient and thus fills a gap in data due to a lack of experimental measurements for this system.
Molecular beam epitaxy of three-dimensional Dirac material Sr3PbO
Authors: Samal D. , Nakamura H. , Takagi H.
Published: July 2016

A series of anti-perovskites including Sr3PbO are recently predicted to be a three-dimensional Dirac material with a small mass gap, which may be a topological crystalline insulator. Here, we report the epitaxial growth of Sr3PbO thin films on LaAlO3 using molecular beam epitaxy. X-ray diffraction indicates (001) growth of Sr3PbO, where [110] of Sr3PbO matches [100] of LaAlO3. Measurements of the Sr3PbO films with parylene/Al capping layers reveal a metallic conduction with p-type carrier density of ∼1020 cm−3. The successful growth of high quality Sr3PbO film is an important step for the exploration of its unique topological properties.
Electro-absorption of silicene and bilayer graphene quantum dots
Authors: Abdelsalam Hazem , Talaat Mohamed H. , Lukyanchuk Igor , Portnoi M. E. , Saroka V. A.
Published: July 2016

We study numerically the optical properties of low-buckled silicene and AB-stacked bilayer graphene quantum dots subjected to an external electric field, which is normal to their surface. Within the tight-binding model, the optical absorption is calculated for quantum dots, of triangular and hexagonal shapes, with zigzag and armchair edge terminations. We show that in triangular silicene clusters with zigzag edges a rich and widely tunable infrared absorption peak structure originates from transitions involving zero energy states. The edge of absorption in silicene quantum dots undergoes red shift in the external electric field for triangular clusters, whereas blue shift takes place for hexagonal ones. In small clusters of bilayer graphene with zigzag edges the edge of absorption undergoes blue/red shift for triangular/hexagonal geometry. In armchair clusters of silicene blue shift of the absorption edge takes place for both cluster shapes, while red shift is inherent for both shapes of the bilayer graphene quantum dots.
Optimization of interaction conditions for efficient short laser pulse amplification by stimulated Brillouin scattering in the strongly coupled regime
Authors: Chiaramello M. , Riconda C. , Amiranoff F. , Fuchs J. , Grech M. , Lancia L. , Marquès J.-R. , Vinci T. , Weber S.
Published: July 2016

Plasma amplification of low energy, a short (∼100–500 fs) laser pulse by an energetic long (∼10 ps) pulse via strong coupling Stimulated Brillouin Backscattering is investigated with an extensive analysis of one-dimensional particle-in-cell simulations. Parameters relevant to nowadays experimental conditions are investigated. The obtained seed pulse spectra are analyzed as a function of the interaction conditions such as plasma profile, pulses delay, and seed or pulse duration. The factors affecting the amount of energy transferred are determined, and the competition between Brillouin-based amplification and parasitic Raman backscattering is analyzed, leading to the optimization of the interaction conditions.
Catastrophic degradation of the interface of epitaxial silicon carbide on silicon at high temperatures
Authors: Pradeepkumar Aiswarya , Mishra Neeraj , Kermany Atieh Ranjbar , Boeckl John J. , Hellerstedt Jack , Fuhrer Michael S. , Iacopi Francesca
Published: July 2016

Epitaxial cubic silicon carbide on silicon is of high potential technological relevance for the integration of a wide range of applications and materials with silicon technologies, such as micro electro mechanical systems, wide-bandgap electronics, and graphene. The hetero-epitaxial system engenders mechanical stresses at least up to a GPa, pressures making it extremely challenging to maintain the integrity of the silicon carbide/silicon interface. In this work, we investigate the stability of said interface and we find that high temperature annealing leads to a loss of integrity. High–resolution transmission electron microscopy analysis shows a morphologically degraded SiC/Si interface, while mechanical stress measurements indicate considerable relaxation of the interfacial stress. From an electrical point of view, the diode behaviour of the initial p-Si/n-SiC junction is catastrophically lost due to considerable inter-diffusion of atoms and charges across the interface upon annealing. Temperature dependent transport measurements confirm a severe electrical shorting of the epitaxial silicon carbide to the underlying substrate, indicating vast predominance of the silicon carriers in lateral transport above 25 K. This finding has crucial consequences on the integration of epitaxial silicon carbide on silicon and its potential applications.