bluuebunny/crossref_metadata_2025 huggingface dataset:
Publisher Correction: Mitochondrial function is impaired in the skeletal muscle of pre-frail elderly
Authors: Andreux Pénélope A. , van Diemen Marcus P. J. , Heezen Maxime R. , Auwerx Johan , Rinsch Chris , Groeneveld Geert Jan , Singh Anurag
Published: November 2019

An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Self-assembled nano-aggregates of fluorinases demonstrate enhanced enzymatic activity, thermostability and reusability
Authors: Tu Chunhao , Zhou Jin , Peng Lei , Man Shuli , Ma Long
Published: November 2019

Three SAP (self-assembling peptide)-tagged fluorinases (FLAs) are successfully prepared. All three SAP-tagged FLAs bear enzymatic activity and they form nano-sized particles in aqueous solution. One of them displays improved enzyme activity, thermostability and reusability.
Evidence of chemical-bond formation at the interface between an epoxy polymer and an isocyanate primer
Authors: Sensui Kazuhiro , Tarui Taishi , Miyamae Takayuki , Sato Chiaki
Published: November 2019

Sum frequency generation spectroscopy was applied to confirm the presence of a chemical bond at the joining interfaces, suggesting that MDI primers can serve as a chemical bridge for urethane adhesives.
Nonmetallic metal toward a pressure-induced bad-metal state in two-dimensional Cu3LiRu2O6
Authors: Huang Bin , Liu Ziyi , Han Yifeng , Zhao Shuang , Wu Meixia , Frank Corey E. , Greenblatt Martha , Croft Mark , Quackenbush Nicholas F. , Liu Sizhan , Tyson Trevor A. , Zhang Lei , Sun Junliang , Shan Pengfei , Dai Jianhong , Yu Xiaohui , Cheng Jinguang , Li Man-Rong
Published: November 2019

The two-dimensional honeycomb layered nonmetallic metal Cu3LiRu2O6 exhibits Pauli-like paramagnetic and Mott variable range hopping semiconduction behaviors, which can be significantly suppressed toward a bad-metal state by pressure up to 35 GPa.
A hierarchical hollow-on-hollow NiCoP electrocatalyst for efficient hydrogen evolution reaction
Authors: Zhang Juntao , Zhang Lipeng , Wang Xingdong , Zhu Wei , Zhuang Zhongbin
Published: November 2019

Superior activity and stability of a NiCoP electrocatalyst towards the hydrogen evolution reaction are achieved by constructing a unique hierarchical “hollow-on-hollow” nanostructure.
Synthesis of a functionalized dipeptide for targeted delivery and pH-sensitive release of chemotherapeutics
Authors: Kiran Sonia , Dwivedi Pankaj , Khatik Renuka , Hameed Sadaf , Dwivedi Monika , Huang Fangsheng , Xu Ronald X.
Published: November 2019

Design of pH-sensitive folic acid conjugated diphenyl peptide nanoparticles for targeted folate receptors mediated endocytosis.
A microporous zinc–organic framework with Lewis basic pyridyl sites for highly selective C2H2/CH4 and C2H2/CO2 gas separation
Authors: Yan Peng , Yang Jucai , Hao Xiangying , Chen Zhisheng , Shen Guanhua , Zhao Yanhua , Ma Deyun , Zhu Jiaxin
Published: November 2019

A microporous zinc–organic framework with Lewis basic pyridyl sites leads to a material that exhibits excellent C2H2/CH4 and C2H2/CO2 gas separation.
Additively manufactured RANEY®-type copper catalyst for methanol synthesis
Authors: Heßelmann Christina , Wolf Torsten , Galgon Florian , Körner Carolin , Albert Jakob , Wasserscheid Peter
Published: November 2019

We describe a novel approach to prepare cellular methanol synthesis catalysts by combining additive manufacturing (AM) of a Cu–Al alloy followed by selective leaching of Al with aqueous NaOH solutions.
Selenium alleviates lipopolysaccharide-induced endometritisviaregulating the recruitment of TLR4 into lipid rafts in mice
Authors: Chen Yu , Zhao Yi-fan , Yang Jing , Jing Hong-yuan , Liang Wan , Chen Miao-yu , Yang Mei , Wang Ying , Guo Meng-yao
Published: November 2019

Selenium (Se) is an essential trace element for living organisms and plays diverse biological roles.
Consolidated production of coniferol and other high-value aromatic alcohols directly from lignocellulosic biomass
Authors: Tramontina Robson , Galman James L. , Parmeggiani Fabio , Derrington Sasha R. , Bugg Timothy D. H. , Turner Nicholas J. , Squina Fabio M. , Dixon Neil
Published: November 2019

Sustainable production of fine chemicals and biofuels from renewable biomass offers a potential alternative to the continued use of finite geological oil reserves.
Muconic acid production from methane using rationally-engineered methanotrophic biocatalysts
Authors: Henard Calvin A. , Akberdin Ilya R. , Kalyuzhnaya Marina G. , Guarnieri Michael T.
Published: November 2019

Here, we demonstrate bioconversion of methane to muconic acid, a dicarboxylic acid that can be upgraded to an array of platform chemicals, by three gammaproteobacterial methanotrophs.
Mapping mechanisms and growth regimes of magnesium electrodeposition at high current densities
Authors: Davidson Rachel , Verma Ankit , Santos David , Hao Feng , Fincher Cole D. , Zhao Dexin , Attari Vahid , Schofield Parker , Van Buskirk Jonathan , Fraticelli-Cartagena Antonio , Alivio Theodore E. G. , Arroyave Raymundo , Xie Kelvin , Pharr Matt , Mukherjee Partha P. , Banerjee Sarbajit
Published: November 2019

Galvanostatic electrodeposition from Grignard reagents in symmetric Mg–Mg cells is used to map Mg morphologies from fractal aggregates of 2D nanoplatelets to highly anisotropic dendrites with singular growth fronts and entangled nanowire mats.
Spatial focusing of magnetic particle hyperthermia
Authors: Myrovali Eirini , Maniotis Nikos , Samaras Theodoros , Angelakeris Makis
Published: November 2019

Magnetic particle hyperthermia is a promising cancer therapy, but a typical constraint of its applicability is localizing heat solely to malignant regions sparing healthy surrounding tissues.
Copper(i) ionic complexes based on imidazo[4,5-f][1,10]phenanthrolin diimine chelating ligands: crystal structures, and photo- and electroluminescence properties
Authors: Rozhkov Anton V. , Eliseeva Svetlana N. , Baykov Sergey V. , Zelenkov Lev E. , Goriachiy Dmitry O. , Taydakov Ilya V.
Published: November 2019

Four new luminescent diimine Cu(i) complexes have been synthesized and applied in organic light-emitting diodes.
Targeting and extending the eukaryotic druggable genome with natural products: cytoskeletal targets of natural products
Authors: Risinger April L. , Du Lin
Published: November 2019

This review describes natural products that target the cytoskeleton, including microtubules, actin, intermediate filaments, and septins, highlighting their utility for the treatment of human disease.
A one-step synthesis of hierarchical porous CoFe-layered double hydroxide nanosheets with optimized composition for enhanced oxygen evolution electrocatalysis
Authors: Zhao Jun , Wang Xiao-ru , Chen Feng-wei , He Chao , Wang Xiao-jing , Li Yu-pei , Liu Rui-hong , Chen Xue-min , Hao Ying-juan , Yang Min , Li Fa-tang
Published: November 2019

Hierarchical porous CoFe-LDHs composed of ultrathin nanosheets were prepared via a simple one-step precipitation process and exhibit excellent electrocatalytic activity and outstanding durability for OER in alkaline media.
A multifunctional Zr-MOF for the rapid removal of Cr2O72−, efficient gas adsorption/separation, and catalytic performance
Authors: Zhang Xiurong , Wang Xia , Fan Weidong , Wang Yutong , Wang Xiaokang , Zhang Kai , Sun Daofeng
Published: November 2019

A three-dimensional framework with two-dimensional channels (UPC-50) is obtained. The stable UPC-50 is a multi-functional material for the rapid removal of Cr2O72−, efficient gas adsorption/separation, and catalytic performance.
Vertically aligned Pt/TiO2 nanobelt films on Ti sheets for efficient degradation of a refractory ethyl thionocarbamate collector
Authors: Fu Pingfeng , Ma Yanhong , Li Gen , Lin Xiaofeng
Published: November 2019

Vertically aligned Pt/TiO2 nanobelt films (Pt/TNFs) on Ti sheets are fabricated to effectively degrade a refractory ethyl thionocarbamate flotation collector.
Sensitive colorimetric detection of ochratoxin A by a dual-functional Au/Fe3O4 nanohybrid-based aptasensor
Authors: Huang Rong , Xiong Lu Lu , Chai Hui Hui , Fu Jing Jing , Lu Zhisong , Yu Ling
Published: November 2019

A novel colorimetric aptasensor based on a Au/Fe3O4 nanohybrid was developed to detect ochratoxin A (OTA).
Synthesis of Au-decorated three-phase-mixed TiO2/phosphate modified active carbon nanocomposites as easily-recycled efficient photocatalysts for degrading high-concentration 2,4-DCP
Authors: Ali Sharafat , Li Zhijun , Ali Wajid , Zhang Ziqing , Wei Mingzhuo , Qu Yang , Jing Liqiang
Published: November 2019

Au decorated three-phase-mixed nanosized TiO2 coupled with phosphate-treated AC as recyclable nanocomposite photocatalysts exhibit excellent photoactivity for degrading high-concentration 2, 4-DCP, mainly due to the improved charge separation and specific surface area.
ZrO2 atomic layer deposition into Sr0.5Sm0.5CoO3−δ–Ce0.9Gd0.1O2−δ solid oxide fuel cell cathodes: mechanisms of stability enhancement
Authors: Schmauss Travis A. , Railsback Justin G. , Lu Matthew Y. , Zhao Kevin Y. , Barnett Scott A.
Published: November 2019

Atomic layer deposition of ZrO2 creates reactive islands that limit coarsening and improve the stability of fuel cell cathode Sr0.5Sm0.5CoO3−δ–Ce0.9Gd0.1O2−δ.
Constructing a tunable defect structure in TiO2 for photocatalytic nitrogen fixation
Authors: Zhang Guoqiang , Yang Xun , He Chuanxin , Zhang Peixin , Mi Hongwei
Published: November 2019

This study provides new insights into constructing efficient nitrogen-fixing photocatalysts by optimizing the OV concentration to coordinate the charge separation efficiency and dissociative adsorption capacity of N2.
Polypyrrole nanostructures modified with mono- and bimetallic nanoparticles for photocatalytic H2 generation
Authors: Yuan Xiaojiao , Dragoe Diana , Beaunier Patricia , Uribe Daniel Bahena , Ramos Laurence , Méndez-Medrano Maria Guadalupe , Remita Hynd
Published: November 2019

Conjugated polymer polypyrrole nanostructures modified with bimetallic (Pt–Ni) nanoparticles are very active for hydrogen generation and a synergetic effect is obtained by alloying Pt with Ni.
Emerging polyanionic and organic compounds for high energy density, non-aqueous potassium-ion batteries
Authors: Chen Mingzhe , Liu Qiannan , Zhang Yanyan , Xing Guichuan , Chou Shu-Lei , Tang Yuxin
Published: November 2019

This review focuses on the state-of-the-art development of emerging polyanionic and organic compounds to achieve high energy density of non-aqueous potassium-ion batteries.
Inhibition of microRNA-146a attenuated heart failure in myocardial infarction rats
Authors: He Junjie , Lu Ying , Song Xiaozheng , Gong Xiaoxuan , Li Yong
Published: November 2019

The aim of the present study was to determine the roles of microRNA (miR)-146a on myocardial infarction (MI)-induced heart failure and cardiac remodeling. Experiments were carried out in Sprague-Dawley rats treated with ligation of left coronary artery to induce heart failure, and in primary neonatal rat cardiac fibroblasts (CFs) and cardiomyocytes treated with angiotensin (Ang) II. Four weeks after MI, rats were injected with miR-146a antagomiR or agomiR via tail vein. After 2 weeks of injection, the rats were killed. In MI rats, left ventricle (LV) ejection fraction and fractional shortening were reduced, and LV volumes in diastole and systole were increased, which were reversed by miR-146a antagomiR, and further exacerbated after miR-146a agomiR treatment. Administration of miR-146a antagomiR improved the decreases of LV ±dp/dtmax and LV systolic pressure (LVSP), and the increase in LV end-diastolic pressure (LVEDP) of MI rats, but miR-146a agomiR deteriorated the LV ±dp/dtmax, LVSP and LVEDP. The increases in the levels of atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), collagen I and collagen III in the heart, and ST2 and norepinephrine in the serum of MI rats were inhibited by miR-146a antagomiR, but aggravated after miR-146a agomiR treatment. The increases of collagen I and collagen III levels induced by Ang II in CFs, and the increases of ANP and BNP levels induced by Ang II in cardiomyocytes were inhibited by miR-146a antagomiR, but aggravated by miR-146a agomiR. These results demonstrated that inhibition of miR-146a improved cardiac dysfunction and cardiac remodeling in heart failure rats.
A strange star scenario for the formation of isolated millisecond pulsars
Authors: Jiang Long , Wang Na , Chen Wen-Cong , Li Xiang-Dong , Liu Wei-Min , Gao Zhi-Fu
Published: November 2019

According to the recycling model, neutron stars in low-mass X-ray binaries were spun up to millisecond pulsars (MSPs), which indicates that all MSPs in the Galactic plane ought to be harbored in binaries. However, about 20% Galactic field MSPs are found to be solitary. To interpret this problem, we assume that the accreting neutron star in binaries may collapse and become a strange star when it reaches some critical mass limit. Mass loss and a weak kick induced by asymmetric collapse during the phase transition (PT) from neutron star to strange star can result in isolated MSPs. In this work, we use a population-synthesis code to examine the PT model. The simulated results show that a kick velocity of ∼60 km s−1 can produce ∼6 × 103 isolated MSPs and birth rate of ∼6.6 × 10−7 yr−1 in the Galaxy, which is approximately in agreement with predictions from observations. For the purpose of comparisons with future observation, we also give the mass distributions of radio and X-ray binary MSPs, along with the delay time distribution.
Une physique des matériaux anciens
Authors: Bertrand Loïc , Gourier Didier
Published: November 2019

Rédigé dans la foulée de l’Année européenne du patrimoine culturel, ce numéro spécial de la revue Reflets de la Physique et du Bulletin de l’Union des professeurs de physique et de chimie présente des aspects complémentaires de la physique moderne des matériaux de l’archéologie, de l’histoire de l’art, de l’histoire naturelle et des sciences de la conservation.
Des peintures des Primitifs flamands à l’impression 3D. Comment jouer avec des couches colorées translucides ?
Authors: Simonot Lionel
Published: November 2019

Avec l’invention de la peinture à l’huile au XVe siècle, la couleur prend une autre dimension : elle se construit dans l’épaisseur de la matière picturale. En effet, le nombre de couches déposées module la clarté et la saturation de la couleur, tandis qu’un fond blanc diffusant donne l’impression d’une lumière provenant de l’arrière du tableau tel un rétro-éclairage.

Étudier la matière picturale comme un composant optique permet de simuler l’apparence d’un tableau, aide qui peut être précieuse lors d’une opération de restauration sur les couches picturales.

Cette approche est aussi à la source de procédés innovants d’impression 3D couleur s’inspirant de la technique des peintres de la Renaissance.
Quand les muons cosmiques explorent le cœur de la matière
Authors: Procureur Sébastien
Published: November 2019

L’utilisation de techniques non destructives est souvent une nécessité en archéologie, mais leur mise en pratique peut parfois être délicate. C’est particulièrement le cas de grandes structures qui sont par nature non transportables, exigeant une technologie mobile et des sondes pénétrantes.

La muographie répond parfaitement à ce type de besoins, en utilisant des particules très énergétiques issues du rayonnement cosmique naturel. Grâce à des instruments développés pour la physique des hautes énergies, cette technique permet aujourd’hui de sonder des endroits inaccessibles et inexplorés avec une précision inédite. La découverte récente de plusieurs cavités à l’intérieur de la pyramide de Khéops le démontre : les muons peuvent voir (presque) partout.
Significant factors of violence against women in urban and rural community
Authors: Rusnakova Marketa , Huskova L'udmila
Published: November 2019

Introduction. The research is focused on the issue of domestic violence against women. It deals with the definition of violence, concepts and models of individual areas by summarising the research findings and the possibilities of methodological tools for measurement of significant factors of violence against women. Aim. The primary goal of the research is to define significant factors which determine violence against women. Materialand Methods. Methods of research – survey, document analysis and database statistical analysis. Results. Primary results of quantitative research reveal that women of all ages and educational groups are at risk. Mostly women aged 26–45, living in rural areas with middle school education without maturity exam (final exam). Violence in families involves men of all age groups with emphasis on increased incidence in specific categories: mostly men aged 36–45, living in rural areas with secondary (high school or comprehensive school) education. Another field of interest represents analysis of negative family situations, impact of violence against woman on her psychological conditions, and reasons why victims carry on marriage and/or partnership. Conclusions. It can be concluded that the most frequent negative phenomena during aggressor's and/or victim's childhood were physical violence of father against mother, alcohol – possibly father's alcoholism, poverty, physical punishment of children, and patriarchal model of the family. Two thirds of victims continue marriage/partnership in order to maintain the family, to keep the father for children, and for financial reasons. There is a frequent social criminality in poor biological families of aggressors, i.e., a commission of crime because of lack of finances.
Implementation of health promoting policies through tailored interventions at health promoting schools and municipalities in Latvia
Authors: Gobina Inese , Pildava Santa , Millere Elina , Heiberga Dita , Apine Margarita , Straume  Ilze , Miezitis Aigars
Published: November 2019

Schools and municipalities play an important role in local health promotion. The Institute of Public Health at Rıga Stradiņš University in collaboration with the National Centre of Disease Prevention and Control carried out an online survey for studying the experiences and needs of health-promoting schools and municipalities in Latvia in implementing health promotion interventions. The aim of this study was to explore the context for developing new intervention model for a health behaviour change model within the Interreg BaltCityPrevention project “Innovative Lifestyle-Related Disease Prevention Model in the Baltic Sea Region.” Totally 112 municipalities and 100 schools within the National Health Promoting Networks were targeted. Only schools and municipalities that had previous experiences in health promotion intervention development were included in the analysis. This study showed that school-aged children were the most prevalent target group for the both schools and municipality interventions. The interventions in physical activity and nutrition used to be the most common areas for health behaviour changes. Health promotion schools and municipalities reported several significant differences in experienced difficulties and expected future needs in implementing health promotion interventions, which should be considered for increasing the capacity for better health promotion for both schools and municipalities in Latvia.
Macroeconomic Relationships for Russian Economic Regions
Authors: Bereznyatskiy A.N. , Brodsky B.E.
Published: November 2019

This paper deals with macroeconomic relationships for Russian economic regions. An economic region is the main item of the regional statistics of the Russian Federation. Nowadays there are near 90 of regions and according to classification these can be industrial, agro- or subsidized regions A study is based upon the disaggregated macromodel for the Russian economic region. Then classification of the Russian regions by types of economic activity is made. Finally, we construct macroeconomic relationships for Russian economic regions specific by their type of economic activity This paper can be considered as the first attempt to create the model of the Russian regional level.
Estimating Prospects of Russian Foreign Trade under Crisis: Sanctions and Countersanctions
Authors: Manushin D.V.
Published: November 2019

Based on econometric modeling, we proved the good relationship between foreign trade turnover and trade balance with the GDP of the Russian Federation. We identified the varying opinions of the Russian and foreign scholars on the impact of sanctions and countersanctions on the Russian economy. Based on the data on the absolute values of the trade turnover, export, import, and trade balance of Russia from 2010 to 2018, we revealed the positive dynamics of these indices, despite their negative values in 2014-2016. This allowed making a conclusion that the overall results of imposing sanctions and countersanctions for the Russian trade turnover and trade balance is rather positive than negative. This refutes the statements of western politicians, representatives of their subordinate international organizations, and some Russian and foreign scholars about the definitely negative role of sanctions and countersanctions. As a result, it is proposed to review the prospects of imposing additional countersanctions on western countries, which would allow developing the non-food sectors of the Russian economy.
Application of Foreign Law in Economic Disputes and Implementation of National Interests
Authors: Deltsova N.V. , Dorofeeva U.A. , Zubkova M.N. , Tokmakov M.A.
Published: November 2019

In the context of globalization, the question of protecting one's own national interests is becoming more acute for the state on whose territory foreign law and order is applied. The application of foreign legislation in economic disputes creates various problems and raises questions related to the establishment of the content of foreign law, which must be resolved in the context of Theoretical understanding and law enforcement practice. This study is aimed at identifying the risks of uncertainty in the application of foreign law to relations involving a foreign element in the Russian legal reality and finding ways to overcome them taking into account national interests. Special attention is paid to consideration of the Institute of non-use (limitations) of foreign law is presented in the form of rules on the application of the mandatory rules of the forum (lex fori), the reservation of public order (order public), and eliminating the use of foreign law in case of conflict.
Motives for Early-Stage Entrepreneurship in Modern Economies
Authors: Pinkovetskaia I.S. , Gromova T.V. , Nikitina I.N.
Published: November 2019

The relevance of the study is due to the important role played by small and individual entrepreneurship in the vast majority of modern national economies. The aim of the study is to assess the indicators describing the ratio of voluntary, highly demanding and necessity-driven entrepreneurs in the total number of start-ups. The results of the Global Entrepreneurship Monitor project for 2018 were used as input data. Modeling of empirical data and evaluation of differentiation of the considered parameters was based on the development of normal distribution density functions. According to the results of modeling average values and change intervals of specific indicators were established. The originality of the work is associated with the assessment of the share of voluntary, highly demanding and necessity-driven entrepreneurs in the total number of early-stage entrepreneurs in 48 countries. The novelty of the study is due to the assessment of indicators characterizing the current motivation of entrepreneurs, as well as the ratio of the above mentioned indicators. The results of the study can be used in the formation of an entrepreneurial climate aimed at the development of a highly demanding business.
How University Acts in the Development of “Smart Cities”
Authors: Afanasiev M. , Lysenkova M.
Published: November 2019

“Smart city” is a new model of territorial development, taking into account the growing importance of information, innovation and human capital. One of the main elements of the “smart city” is a developed system of higher education. The aim of this work was to study the impact of higher education on "smart" and innovative cities. The objectives of this work were to obtain quantitative characteristics of the impact of the University on the smart city. Approach to solving this problem was to build indicators based on indicators that characterize the quality of life, and ratings to compare cities on their basis. The hypothesis of the study is that the higher education system has a positive impact on the development of smart and innovative cities. A theoretically justified method of constructing an indicator of a certain direction of socio-economic development is a component analysis of indicators characterizing this direction. As a result, the rankings of Russian and foreign cities based on the characteristics of quality of life, which prove that education is a key indicator of the development of "smart" and innovative cities.
The “Twist-Needle” – a new concept for endoscopic ultrasound-guided fine needle-biopsy
Authors: Hann Alexander , Walter Benjamin M. , Epp Sonja , Ayoub Younan Kabara , Meining Alexander
Published: November 2019

Background and study aims Endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) represents a standard method for tissue acquisition of lesions adjacent to the gastrointestinal wall. Needles of 19 gauge acquire more tissue than needles with a smaller diameter, but are often unable to penetrate solid, rigid masses. In this study we evaluated a novel prototype that links forward movement of the needle to rotation of the needle tip.

Materials and methods Two needle-models that generate either a regular axial movement or a combination of axial movement with rotation of the needle tip were compared ex vivo for measurement of pressure needed to penetrate artificial tissue. Furthermore, a standard 19-gauge EUS-FNB needle was compared to a modified model (“Twist Needle”) in an ex vivo model to measure the amount of tissue obtained.

Results Pressure measurements using the rotating needle revealed that significantly less pressure is needed for penetration compared to the regular axial movement (mean ± SEM; 3.7 ± 0.3 N vs. 5.5 ± 0.3 N). Using the modified 19-gauge “Twist Needle” did not diminish tissue acquisition measured by surface amount compared to a standard needle (37 ± 5 mm² vs. 35 ± 6 mm²).

Conclusion The method of rotation of an EUS-FNB needle tip upon forward movement requires less pressure for penetration but does not diminish tissue acquisition. Hence, the concept of our “Twist Needle” may potentially reduce some of the current limitations of standard EUS-FNB.
Zuhören, wertschätzen, Sinn finden
Authors: Gebhardt Stefan
Published: November 2019

Damit psychisch erkrankte Menschen nicht in ein Versorgungssystem gepresst werden, das ihren Bedürfnissen widerspricht, ist es wichtig, ihre Lebenswelt mit in die Behandlung zu integrieren. Dabei können Pflegende von Betroffenen lernen, was zu tun ist – statt die Betroffenen anzuleiten, wie man etwas macht. Unser Autor stellt Behandlungskonzepte – wie das Gezeiten-Modell, das Transtheoretische Modell, Recovery und Motivational Interviewing – vor, die die individuellen Bedürfnisse der Patienten beachten und ihnen helfen, im Recovery-Prozess voranzuschreiten.
Fallbesprechungen in der Gerontopsychiatrie nach dem Wittener Modell
Authors: Blumenrode Stefan
Published: November 2019

Herausforderndes Verhalten ist bei Menschen mit Demenz keine Seltenheit. Um angemessen damit umgehen zu können, wurde das Wittener Modell der Fallbesprechung bei Menschen mit Demenz entwickelt. Mit dieser Methode gelingt es Pflegenden, herausforderndes Verhalten besser zu verstehen, Handlungsoptionen zu entwickeln und so zum Wohlbefinden des Menschen mit Demenz beizutragen.
Supercritical Extracts from Arctium lappa as a Potential Inhibitor for the Activation of Complement System
Authors: Fontana Pâmela Dias , Bavia Lorena , Bovo Fernanda , Souza Ariádine Reder C. de , Corazza Marcos Lúcio , Messias-Reason Iara Jose
Published: November 2019

Arctium lappa is a perennial species of the Asteraceae family originally from Europe and Asia. Considered a weed species in the southern region of Brazil, it is popularly used as a natural anti-inflammatory. The complement system is an important component of the innate immune response. However, its exacerbated activation can lead to harmful conditions like autoimmune and inflammatory disorders. Plants that inhibit the activation of complement can be a promising tool in the treatment of inflammatory diseases. Here, we evaluated the effect of A. lappa leaves extracts on the activation of the classical and alternative pathways of complement system. Two extracts were obtained under supercritical conditions using scCO2 with ethanol as cosolvent, at 313.15K, 15 MPa (E1) and 25 MPa (E2). Classical and alternative activation were evaluated using complement fixation test. Different concentrations of A. lappa extracts E1 and E2 showed an inhibitory effect on both complement pathways, and heparin was used as control. The IC50 of E1, E2, and heparin were 28.26, 20.12 and 92.54 µg/mL for classical and 26.12, 27.70, 27.78 µg/mL for the alternative pathway. Results demonstrate that A. lappa is a promising complementary treatment for diseases associated with complement activation.
Development and Validation of a UHPLC-PDA-MS Method for the Quantitative Analysis of Anthraquinones in Bulbine natalensis Extracts and Dietary Supplements
Authors: Bae Ji-Yeong , Avula Bharathi , Wang Yan-Hong , Wang Mei , Ali Zulfiqar , Viljeon Alvaro M. , Khan Ikhlas A.
Published: November 2019

A UHPLC-photodiode array-MS method was developed and validated for the quantification of one chromone and six anthraquinone type of compounds from Bulbine natalensis plant samples and dietary supplements. Metabolites

1 – 

7 were identified based on their retention times and electrospray ionization-MS spectra compared with a mix of previously isolated compounds. The quantification of

1 – 

7 was based on photodiode array detection. The optimized separation was achieved using a CORTECS C18 column with a gradient of water/acetonitrile as the mobile phase. Seven compounds were separated within 15 minutes with detection limits of 50 pg on the column. The analytical method was validated for linearity, repeatability, accuracy, limits of detection, and limits of quantification. The relative standard deviations for intra- and inter-day experiments were less than 5% and the recovery efficiency was 98 – 101%. Nine dietary supplements labeled as containing B. natalensis were examined. Anthraquinone-type compounds were detected in only five out of nine dietary supplements, with the total amount ranging from 11.3 to 90.4 mg per daily dose. The analytical method is simple, economic, rapid, and can be applied for quality assessment of B. natalensis and dietary supplements. Electrospray ionization-MS was used for the identification of these compounds in plant samples and dietary products.
A Copper(I)-Mediated Tandem Three-Component Synthesis of 5-Allyl-1,2,3-triazoles
Authors: Song Yoona , Lee Soyun , Dutta Palash , Ryu Jae-Sang
Published: November 2019

A copper(I)-mediated tandem three-component reaction using alkynes, azides, allyl iodides, CuI and NaNH2 is developed. The reactions proceed smoothly at room temperature to afford 5-allyl-1,2,3-triazoles, which can be further converted into 1,2,3-triazole-fused tricyclic scaffolds. This method features an efficient one-pot cascade route using commercial alkynes and affords the corresponding 5-allyl-1,2,3-triazoles with high yields and good selectivity under mild reaction conditions.
Starphenes and Phenes: Structures and Properties
Authors: Rüdiger Elias C. , Müller Matthias , Freudenberg Jan , Bunz Uwe H. F.
Published: November 2019

Acenes have been known for a long time but their larger congeners, starphenes and phenes, have only been recently accessible as processable and characterizable derivatives. In this personalized review, we delineate the synthetic approach developed by our group over the last four years. Nickel-mediated Yamamoto coupling of ortho-dibromoacenes generates cyclotrimers. If performed in a shotgun approach, i.e. with substituted 2,3-dibromotetracene or -pentacene in the presence of ortho-dibromobenzene or ortho-dibromoveratrole, trimeric phenes and tetramers would result. Cyclotrimers formed by a pentacenylene and two phenylenes are formally dibenzo[a,c]hexacenes. A direct way to obtain these species is to employ Stille coupling of a dimethylstannafluorene with 2,3-dibromoacenes. If tetrabromoanthracenes or tetrabromopentacenes are fed into this process, tetrabenzopentacene and tetrabenzoheptacenes are easily accessible. Optical and quantum-chemical characterizations provide insight into the electronic situation and aromaticity of these species.
Magnetic and silver nanoparticle functionalized calcium carbonate particles—Dual functionality of versatile, movable delivery carriers which can surface-enhance Raman signals
Authors: Parakhonskiy Bogdan V. , Abalymov Anatolii , Ivanova Anna , Khalenkow Dmitry , Skirtach Andre G.
Published: November 2019

Multifunctional probes play an increasing role even beyond applications in biomedicine. Multifunctionality introduced by the dual types of complementary probes is always attractive because, in this case, functionalized objects inherit the function of both materials. Porous calcium carbonate microparticles are becoming popular carriers of biomolecules and biosensors, as well as imaging enhancers. We demonstrate here a dual function of these carriers by incorporating both magnetic and silver nanoparticles. Magnetic nanoparticles enable movements and displacements by a magnetic field, while silver nanoparticles provide surface-enhanced Raman signal amplification necessary for the detection of biomolecules. Application of such dual-functional carriers is foreseen beyond the applications of biomedicine and theranostics.
Internal quantum efficiencies of AlGaN quantum dots grown by molecular beam epitaxy and emitting in the UVA to UVC ranges
Authors: Brault J. , Matta S. , Ngo T.-H. , Al Khalfioui M. , Valvin P. , Leroux M. , Damilano B. , Korytov M. , Brändli V. , Vennéguès P. , Massies J. , Gil B.
Published: November 2019

AlyGa1−yN quantum dots (QDs) have been grown by molecular beam epitaxy on AlxGa1−xN (0001) using a 2-dimensional–3-dimensional growth mode transition that leads to the formation of QDs. QDs have been grown for Al compositions y varying between 10% and 40%. The influence of the active region design [composition y, QD height, and bandgap difference (ΔEg) between the AlxGa1−xN cladding layer and the AlyGa1−yN QDs] is discussed based on microscopy, continuous wave photoluminescence (PL), and time-resolved PL (TRPL) measurements. In particular, increasing y leads to a shift of the QD emission toward shorter wavelengths, allowing covering a spectral range in the UV from 332 nm (UVA) to 276 nm (UVC) at room temperature (RT). The low-temperature (LT) internal quantum efficiency of the QD ensembles was estimated from TRPL experiments at 8 K and values between 11% and 66% were deduced. The highest internal quantum efficiency (IQE)-LT is found for the QDs with higher Al content y. Then, the PL spectrally integrated intensity ratios between RT and LT were measured to estimate the IQE of the samples at RT. The PL ratio is higher for larger ΔEg, for QDs with y of 0.1 or 0.2, and high PL intensity ratios up to 30% were also measured for QDs with larger y of 0.3 and 0.4. RT IQE values between 5% and 20% are deduced for AlyGa1−yN QDs emitting in the 276–308 nm range.
Refractive indices of shock-induced polymorphic Gd3Ga5O12 single crystals
Authors: Jia Sui , Liu Qiancheng , Li Jun , Li Jiabo , Zhou Xianming , Xiang Shikai , Wu Qiang
Published: November 2019

Gd 3 Ga 5 O 12 single crystals [gadolinium gallium garnet (GGG)] were shock compressed to elastic deformation, elastoplastic transformation, and structural phase-transition regimes with the corresponding single, two-wave, and three-wave structures. Velocity profiles at the front interface and the rear free surface of the sample are measured by a Doppler pin system. Results of these measurements are analyzed in detail, and the refractive index, n, at 1550 nm is obtained as a function of shock pressure or density. Incorporating previously published single-wave data above 100 GPa, characteristic variations in the refractive index are presented and discussed within the context of shock-induced polymorphism of the GGG.
Independent driving method for significant hysteresis reduction of piezoelectric stack actuators
Authors: Zhang Liansheng , Huang Jichao , Tang You , Li Ruijun , Huang Qiangxian , Cheng Rongjun , Wang Chaoqun
Published: November 2019

Piezoelectric actuators are used extensively in precision positioning platforms. However, the positioning accuracy is severely affected by the hysteresis characteristics of piezoelectric ceramics. Piezoelectric stack actuators (PSAs) are usually composed of hundreds of thin piezoelectric ceramic layers connected in parallel, and their hysteresis quantity is the accumulation of that in each layer, which results in large nonlinear deformation. A new driving method is proposed for PSAs to drive each layer independently, and all the layers are driven in sequence. The independent driving logic is analyzed, and the scheme of the driving circuit is presented to replace the traditional voltage amplifier, which guarantees that there is no need to change the original driving signal. Experimental results show that the hysteresis of a homemade seven-layer PSA is reduced from approximately 12.5% to 2.7% compared with the traditional parallel driving method in various frequencies. The proposed independent driving method can reduce hysteresis significantly and achieve good linearity in an open-loop control, which does not need high-performance sensors or hysteresis models.
A low level radio frequency system drift compensation technique by time-multiplexing pick-up/reference signals
Authors: Lin Zhenyang , Du Yingchao , Huang Wenhui , Huang Gang , Xu Yilun , Tang Chuanxiang
Published: November 2019

The Low Level radio frequency system long-term stability is critical for the operation of accelerator facilities. The RF cavity field phase drift observed at the Tsinghua Thomson scattering X-ray source showed the correlations with devices temperature characteristic. We proposed a drift compensation technique by time-multiplexing cavity pick-up and phase reference signals, which guaranteed that they shared the same route with the same change. The preliminary ∼84 h Dual-Receiver out-of-loop stability test showed phase drift of 100 fs peak-peak (∼45 fs rms) when the reference signal phase changed ∼40 ps peak-peak.
Analysis of the performance of a new developed shear stress transport model in a turbulent impinging jet flow
Authors: Zhang Guiyong , Huang Huakun , Sun Tiezhi , Li Ning , Zhou Bo , Sun Zhe
Published: November 2019

In this work, a developed Shear Stress Transport (SST) model has been used for numerically simulating the problem of turbulent round jet impingement heat transfer. Based on the cross-diffusion correction activated in the logarithmic and wake parts of a region by using a blending function in the destruction term of turbulent kinetic energy k, the developed SST model is capable of recovering the effect of the pressure gradient ignored by the standard SST model. Also, the Kato-Launder model is added in the production term of k to consider the stagnating flows. The developed model has been investigated for turbulent round jets with the nozzle-plate spacing of 2, 4, and 6. The model is verified by comparing with the measurements and the results of the standard SST model, the SST with low-Re model, the Launder and Sharma model with the Yap model, the k-ω model, and the Reynolds-averaged Navier-Stokes/large eddy simulation model. Comparing with other referred methods, the developed model obtains accurate prediction in terms of velocity and pressure. As for heat transfer, it also possesses appropriate performance. Moreover, the developed model is sensitive to the pressure gradient, which helps the model be capable of reproducing accurate flow structures. By using the present model, it has been found that the velocity profiles are dominated by the turbulent kinetic energy away from walls. Meanwhile, the results show that the inner peak of heat transfer is connected with the radial pressure gradient at the stagnation point.
Numerical and experimental investigation of heat transfer across a nanoscale gap between a magnetic recording head and various media
Authors: Sakhalkar S. , Cheng Q. , Ghafari A. , Ma Y. , Bogy D.
Published: November 2019

With the emergence of Heat-Assisted Magnetic Recording and Microwave-Assisted Magnetic Recording, understanding nanoscale heat transfer at the head-media interface is crucial for developing reliable hard disk drives. There is a need to develop a methodology that uses a spacing-dependent nanoscale heat transfer coefficient, determined by using wave-based radiation and van der Waals force driven phonon conduction theories to predict head temperatures in hard disk drives. We present a numerical model to simulate the head temperature due to heat transfer across a closing nanoscale gap between the head and the media (nonrotating) and compare our results with static touchdown experiments performed with a head resting on three different media (Si, magnetic disks with AlMg, and glass substrates). The Thermal Fly-Height Control (TFC) heater in the head is powered to create a local protrusion, leading to contact of a resistive Embedded Contact Sensor (ECS) that is used to measure the temperature change. As the ECS approaches the media, enhanced phonon conduction heat transfer causes a drop in the ECS temperature vs TFC power curve. Our model shows that the introduction of van der Waals forces between the head and the media during computation of the head's thermal protrusion causes a steeper drop in the simulated ECS temperature curve, ensuring a good quantitative match with experiments for all of the media materials tested and different initial ECS-media spacings. We isolate the effect of air conduction on ECS cooling by comparing our simulations with experiments performed in air vs vacuum.
Plasma reconfigurable metamaterial using a 6.5 GHz dielectric resonator array
Authors: Fantini Lisa , Dennison Stephen , Kim Hyunjun , Sarkarat Maryam , Lanagan Michael , Hopwood Jeffrey
Published: November 2019

Plasma formation between coupled dielectric resonators (DRs) is frequency scaled from 1 GHz to 7 GHz. Previous research found that applying low-power microwaves to a pair of calcium titanate (CaTiO3) resonators could ignite plasma between them using the HEM111 resonance mode. Those large, 1 GHz DRs are scaled down in size, and thus scaled up in frequency. The optimum relative permittivity of DRs for plasma formation is reported to be 200, confirming that CaTiO3 (ɛr ∼ 170 ± 5) is a good material to use for plasma-forming DRs. This paper presents data collected for a 2D array of resonators operating in the 6–7 GHz range for separation distances of 0.25 mm and 0.5 mm in a 1–10 Torr argon gas environment. Gas breakdown data for two DR configurations are compared to the Raizer theory at 1.1 GHz and 6.5 GHz. Plasma modulation of the reflection and transmission of DR arrays with plasma on and off indicates possible future applications as a frequency selective filter.
Thermodynamic properties of 55-atom Pt-based nanoalloys: Phase changes and structural effects on the electronic properties
Authors: Cezar Henrique M. , Rondina Gustavo G. , Da Silva Juarez L. F.
Published: November 2019

Atomistic understanding of thermodynamic processes such as phase transitions in nanoalloys is crucial to improve real-life applications of Pt-based nanocatalysts. In this work, we investigate the thermodynamic properties of 55-atom PtCo and PtNi nanoalloys and compare them to reference unary systems, Pt55, Co55, and Ni55. Our results are based on the combination of the parallel tempering Monte Carlo and the revised basin-hopping Monte Carlo algorithms with many-body Gupta potentials, and furthermore, density functional theory calculations were employed to validate the adopted Gupta parameters and to analyze electronic effects induced by structural changes derived from temperature effects. We identified first-order phase transitions for Pt55, Co55, Pt30Co25, Ni55, and Pt40Ni15 at 727, 1027, 1003, 914, and 1051 K, respectively. Thus, alloying unary Pt nanoclusters with Ni and Co leads to an increase in the melting temperature, indicating that the nanoalloys are able to sustain higher temperatures while maintaining their structure. A low-temperature solid-solid transition was also identified for Pt55, which is characterized by a change from a face-centered cubic like structure (putative global minimum configuration) to the icosahedron structure. The structural transformations led by the temperature increase induce small changes on the total density of states, namely, a slight shift of the d-band center toward the highest occupied molecular orbital with increasing temperature, which was found for all considered nanoclusters.
Magnetic and transport properties of a ferromagnetic layered semiconductor MnIn2Se4
Authors: Yang Juehan , Zhou Ziqi , Fang Jingzhi , Wen Hongyu , Lou Zheng , Shen Guozhen , Wei Zhongming
Published: November 2019

Magnetic two-dimensional (2D) materials hold considerable promise for the next generation of spintronic devices. In this study, a ternary 2D layered semiconductor compound, MnIn2Se4, with good photoelectric properties and low-temperature ferromagnetism is introduced. Field-effect transistors based on few-layer MnIn2Se4 exhibit n-type characteristics, with a high on-off ratio of up to 450 times, and exhibit a good photoresponse with an on-off ratio of 25 times. Magnetic measurements show that few-layer MnIn2Se4 exhibits ferromagnetic behavior with a perpendicular anisotropy at 2 K and a Curie temperature of ∼7 K. This study suggests that MnIn2Se4 has potential in applications involving magnetic and optoelectronic devices.
Ferromagnetic resonance spectra of permalloy nano-ellipses as building blocks for complex magnonic lattices
Authors: Bang Wonbae , Montoncello F. , Kaffash M. T. , Hoffmann A. , Ketterson J. B. , Jungfleisch M. B.
Published: November 2019

We report the experimental and theoretical characterization of the angular dependent magnetic field and microwave frequency response of isolated mesoscopic permalloy nanoellipses for geometries in which the static magnetic field is either parallel or perpendicular to the microwave magnetic field. We show how these spectra form a basis for interpreting the ferromagnetic resonance spectra of lattices based on such structures, including those containing frustrated regions, such as artificial spin ice structures.
Ferromagnetic resonance imbalance at high microwave power: Effect on the Gilbert damping parameter
Authors: Dushenko Sergey , Ando Yuichiro , Shinjo Teruya , Shiraishi Masashi
Published: November 2019

Nowadays, electron spin resonance (ESR) systems are routinely used to measure the ferromagnetic resonance (FMR) in a wide range of experiments. However, the number of spins in ferromagnets far exceeds the small number of spins in paramagnetic systems that ESR systems were originally designed for. In this study, we show that high spin concentration and microwave input power—conditions routinely met in various FMR experiments—lead to the strong distortion of the FMR shape due to the sublinear operating regime of the microwave detector. We introduce the additional imbalance term in the FMR Lorentzian fitting function that allows extracting correct values of the Gilbert damping parameter under such conditions. Our results are crucial for the quantitative estimation of the Gilbert damping—the key parameter in many magnetic and spintronics measurements.