bluuebunny/crossref_metadata_2025 huggingface dataset:
Chelated metal ions modulate the strength and geometry of stacking interactions: energies and potential energy surfaces for chelate–chelate stacking
Authors: Malenov Dušan P. , Zarić Snežana D.
Published: May 2018

CCSD(T)/CBS and DFT calculations show very strong stacking of acac-type chelates, up to −9.70 kcal mol−1. Different electrostatic potentials above the metals cause different geometries of the most stable chelate–chelate stacking interactions.
Polymorphism and metal-induced structural transformation in 5,5′-bis(4-pyridyl)(2,2′-bispyrimidine) adlayers on Au(111)
Authors: Hötger Diana , Carro Pilar , Gutzler Rico , Wurster Benjamin , Chandrasekar Rajadurai , Klyatskaya Svetlana , Ruben Mario , Salvarezza Roberto C. , Kern Klaus , Grumelli Doris
Published: May 2018

Addition of iron to a self-assembled molecular network can lift polymorphism and leads to the expression of one single metal–organic structure on a surface.
Microcapsules from diverse polyfunctional materials: synergistic interactions for a sharp response to pH changes
Authors: Pentela Nagaraju , Duraipandy N. , Sainath Nikhil , Parandhaman Thanusu , Kiran M. S. , Das Sujoy K. , Jaisankar S. N. , Samanta Debasis
Published: May 2018

Responsive microcapsules with strong synergistic interactions were prepared using a copolymer, silver nanoparticles and carbon nanotubes.
Towards thermally stable high performance lithium-ion batteries: the combination of a phosphonium cation ionic liquid and a 3D porous molybdenum disulfide/graphene electrode
Authors: Ge Yu , Pozo-Gonzalo Cristina , Zhao Yong , Jia Xiaoteng , Kerr Robert , Wang Caiyun , Howlett Patrick C. , Wallace Gordon G.
Published: May 2018

A lithium battery with excellent performance and thermal stability is realized by using a nanostructured electrode and an ionic liquid.
Layer-sliding-driven crystal size and photoluminescence change in a novel SCC-MOF
Authors: Du Xiang-Sha , Yan Bing-Jie , Wang Jia-Yin , Xi Xiao-Juan , Wang Zhao-Yang , Zang Shuang-Quan
Published: May 2018

Solvent lubricated layer-sliding driven remarkable crystal size and photoluminescence change in a novel 2D SCC-MOF.
Formal oxidative addition of a C–H bond by a 16e iridium(i) complex involves metal–ligand cooperation
Authors: Kumar Amit , Feller Moran , Ben-David Yehoshoa , Diskin-Posner Yael , Milstein David
Published: May 2018

Metal–ligand cooperation through aromatization–dearomatization of the pyridine backbone enables the facile oxidative addition of a C–H bond by a 16e (PNP)Iridium(i) complex.
Enzymatic biofuel cell-based self-powered biosensing of protein kinase activity and inhibition via thiophosphorylation-mediated interface engineering
Authors: Gu Chengcheng , Gai Panpan , Han Lei , Yu Wen , Liu Qingyun , Li Feng
Published: May 2018

We developed a facile and ultrasensitive EBFC-based self-powered biosensor of protein kinase A activity and inhibition via thiophosphorylation-mediated interface engineering.
Metal coordination and metal activation abilities of commonly unreactive chloromethanes toward metal–organic frameworks
Authors: Bae Jinhee , Lee Eun Ji , Jeong Nak Cheon
Published: May 2018

The commonly inert chloromethanes, dichloromethane and trichloromethane, can exchange other solvents bonded at open coordination sites in metal–organic frameworks, providing a new route to activate the open coordination sites for subsequent use in applications.
Formation of coordination polymer glass by mechanical milling: dependence on metal ions and molecular doping for H+ conductivity
Authors: Ohara Yuki , Hinokimoto Akira , Chen Wenqian , Kitao Takashi , Nishiyama Yusuke , Hong You-lee , Kitagawa Susumu , Horike Satoshi
Published: May 2018

Metal ion-dependent glass formation of coordination polymer crystals and direct molecular doping for the glass are studied with H+ conductivity.
The role of mid-gap states in all-inorganic CsPbBr3 nanoparticle one photon up-conversion
Authors: Roman Benjamin J. , Sheldon Matthew
Published: May 2018

CsPbBr3 nanoparticles that have been treated with NH4SCN to produce essentially trap-free surfaces show an increase of one photon up-conversion quantum yield with little change to the up-conversion energy of activation, as estimated using an Arrhenius analysis.
Redox supramolecular self-assemblies nonlinearly enhance fluorescence to identify cancer cells
Authors: Huang Zhentao , Yao Qingxin , Chen Jiali , Gao Yuan
Published: May 2018

Redox supramolecular self-assembly: an ROS induced self-assembly exhibits nonlinear fluorescence enhancement, which correlates to the ROS threshold under pathological conditions including cancer.
Nanoreactors stable up to 200 °C: a class of high temperature microemulsions composed solely of ionic liquids
Authors: Pei Yuanchao , Ru Jie , Yao Kaisheng , Hao Lihui , Li Zhiyong , Wang Huiyong , Zhu Xingqi , Wang Jianji
Published: May 2018

A class of microemulsions solely consisting of ionic liquids was shown to maintain nanoscale droplets up to about 200 °C, and this unique property was used to prepare porous Pt where the microemulsions played the roles of a solvent, a template and a reductant.
Dimensional crossover of correlated anion disorder in oxynitride perovskites
Authors: Johnston Hannah , Black Ashley P. , Kayser Paula , Oró-Solé Judith , Keen David A. , Fuertes Amparo , Attfield J. Paul
Published: May 2018

A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1−xSrxTaO2N series of perovskite oxynitrides.
Bulky substituent and solvent-induced alternative nodes for layered Cd–isophthalate/acylhydrazone frameworks
Authors: Roztocki Kornel , Lupa Magdalena , Hodorowicz Maciej , Senkovska Irena , Kaskel Stefan , Matoga Dariusz
Published: May 2018

A series of three layered cadmium–organic frameworks containing acylhydrazone and (un)substituted isophthalates have been prepared and characterised.
Hydrothermal synthesis, morphology, structure, and magnetic properties of perovskite structure LaCr1−xMnxO3 (x = 0.1, 0.2, and 0.3)
Authors: Wang Shan , Wu Xiaofeng , Yuan Long , Zhang Chenyang , Cui Xiaoqiang , Lu Dayong
Published: May 2018

We report the synthesis of LaCr1−xMnxO3 (x = 0.1, 0.2, and 0.3) single crystal microcubes via a mild hydrothermal method.
The role of electronegativity on the extent of nitridation of group 5 metals as revealed by reactions of tantalum cluster cations with ammonia molecules
Authors: Arakawa Masashi , Ando Kota , Fujimoto Shuhei , Mishra Saurabh , Patwari G. Naresh , Terasaki Akira
Published: May 2018

The electronegativity of the metal (V > Ta) plays a key role in determining the composition of the metal nitrides.
Performance of PELDOR, RIDME, SIFTER, and DQC in measuring distances in trityl based bi- and triradicals: exchange coupling, pseudosecular coupling and multi-spin effects
Authors: Meyer Andreas , Jassoy Jean Jacques , Spicher Sebastian , Berndhäuser Andreas , Schiemann Olav
Published: May 2018

The performance of pulsed EPR methods for distance measurements is evaluated on three different trityl model systems.
Maximum bonding fragment orbitals for deciphering complex chemical interactions
Authors: Wang Yang
Published: May 2018

An optimal set of fragment orbitals is proposed as a simple and powerful tool for analyzing complex bonding interactions.
Macroscopic and local approaches of phase transition in sol–gel synthesized (Bi0.5Na0.5)TiO3–SrTiO3thin films
Authors: Lee Hyun-Young , Luo Jin , Zhou Zhen , Sun Wei , Li Jing-Feng
Published: May 2018

High-quality (1 −x)(Bi0.5Na0.5)TiO3–xSrTiO3lead-free piezoelectric thin films (x= 0, 0.1, and 0.25) on Pt(111)/Ti/SiO2/Si(100) substrates were prepared by a sol–gel method.
Photo-induced heat generation in non-plasmonic nanoantennas
Authors: Danesi Stefano , Gandolfi Marco , Carletti Luca , Bontempi Nicolò , De Angelis Costantino , Banfi Francesco , Alessandri Ivano
Published: May 2018

The photo-induced heat generation in SiO2/Si core/shell nanoantennas is analysed on the basis of their optothermal properties.
Confinement boosts CO oxidation on an Ni atom embedded inside boron nitride nanotubes
Authors: Zhang Yadong , Liu Yuzhen , Meng Zhaoshun , Ning Cai , Xiao Chuanyun , Deng Kaiming , Jena Purusottam , Lu Ruifeng
Published: May 2018

Because of the confinement effect, Ni embedded on the interior surface of BNNT exhibits a much higher catalytic activity for CO oxidation by comparing with that embedded in h-BN or on the outside surface of BNNT.
Self-assembled materials and supramolecular chemistry within microfluidic environments: from common thermodynamic states to non-equilibrium structures
Authors: Sevim S. , Sorrenti A. , Franco C. , Furukawa S. , Pané S. , deMello A. J. , Puigmartí-Luis J.
Published: May 2018

Microfluidics enables selection of different pathways in self-assembly processes, while allowing for an exquisite control over the processing of self-assembled materials.
The coordination chemistry of the neutral tris-2-pyridyl silicon ligand [PhSi(6-Me-2-py)3]
Authors: Plajer Alex J. , Colebatch Annie L. , Enders Markus , García-Romero Álvaro , Bond Andrew D. , García-Rodríguez Raúl , Wright Dominic S.
Published: May 2018

The first transition metal complexes of Si(iv) tris(2-pyridyl) ligands are reported.
Achieving high gravimetric energy density for flexible lithium-ion batteries facilitated by core–double-shell electrodes
Authors: Balogun Muhammad-Sadeeq , Yang Hao , Luo Yang , Qiu Weitao , Huang Yongchao , Liu Zhao-Qing , Tong Yexiang
Published: May 2018

Core–double-shell electrodes were designed to achieve flexible LIBs with an applicable energy density of 314 mA h g−1 (based on the device weight).
Degradation of 1H-benzotriazole by UV/H2O2 and UV/TiO2: kinetics, mechanisms, products and toxicology
Authors: Chen Ya , Ye Jinshao , Li Chongshu , Zhou Pulin , Liu Juan , Ou Huase
Published: May 2018

Benzotriazoles are emerging contaminants widespread in environmental waters.
A one-pot biomimetic synthesis of selectively functionalized lignins from monomers: a green functionalization platform
Authors: Giummarella Nicola , Gioia Claudio , Lawoko Martin
Published: May 2018

Herein, a platform synthesis of functionalized lignin polymers of interest for material systems is demonstrated.
Theoretical study on the effective dehydrochlorination of 1,2-dichloroethane catalyzed by tetraalkylphosphonium chlorides: electrostatically controlled reactivity
Authors: Mu Xueli , Jing Yaru , Liu Chengbu , Zhang Dongju
Published: May 2018

Herein, we report a DFT study on how and why tetraalkylphosphonium chlorides efficiently catalyze the dehydrochlorination of 1,2-dichloroethane.
Multi-elemental chalcogeniden-BiCdSe films grown under controlled depth voltammetry: improved photo-electrochemical behaviour toward energy conversion
Authors: Hazra Mukul , Chatterjee Sudeshna , Datta Jayati
Published: May 2018

In this study, a combinatorial approach was developed for fabricating nanostructured composite semiconductor matrices, which exhibited promising photo-response, appreciable photo-current potential and enhanced energy conversion efficiency.
Layer-by-layer manipulation of anisotropic nanoblocks: orientation-switched superlattices through orthogonal stacking of a and c directions
Authors: Nakagawa Yoshitaka , Matsumoto Riho , Kageyama Hiroyuki , Oaki Yuya , Imai Hiroaki
Published: May 2018

Elaborate multilayered architectures are achieved through the orthogonal stacking of two types of 2D arrays of nanoblocks through layer-by-layer manipulation.
An immunoconjugated up-conversion nanocomplex for selective imaging and photodynamic therapy against HER2-positive breast cancer
Authors: Ramírez-García Gonzalo , Panikar Sandeep S. , López-Luke Tzarara , Piazza Valeria , Honorato-Colin Miguel Angel , Camacho-Villegas Tanya , Hernández-Gutiérrez Rodolfo , De la Rosa Elder
Published: May 2018

The UCNPs-ZnPc-Trastuzumab nanocomplex tracks and kills HER2-positive breast cancer cells upon NIR-excitation.
A general autocatalytic route toward silica nanospheres with ultrasmall sized and well-dispersed metal oxide nanoparticles
Authors: Xu Linxu , Cui Fang , Zhang Jiajia , Zhang Xiao , Wang Yan , Cui Tieyu
Published: May 2018

Metal ions@silica nanospheres were prepared by our presented intramolecular autocatalytic route under neutral condition without any additional catalysts and their converse to mNPs@silica nanocomposites.
Recent progress of metal–graphene nanostructures in photocatalysis
Authors: Khan Mohammad Ehtisham , Khan Mohammad Mansoob , Cho Moo Hwan
Published: May 2018

This review summarizes the recent and advanced progress for the easy fabrication and design of metal–graphene-based nanostructures as photocatalysts using a range of approaches, including green and biogenic approaches.
Hydrogen-transfer and condensation–addition polymerizations of acrylic acid
Authors: Murase Takuya , Matsuoka Shin-ichi , Suzuki Masato
Published: May 2018

Hydrogen-transfer and condensation–addition polymerizations of acrylic acid catalyzed by strong Brønsted acids to produce aliphatic polyesters, graft copolymers, and poly(ester-ether)s.
High power electromagnetic pulse applicators for evaluation of biological effects induced by electromagnetic radiation waves
Authors: Pillet Flavien , Gibot Laure , Catrain Alexandre , Kolosnjaj-Tabi Jelena , Courtois Kristelle , Chretiennot Thomas , Bellard Elisabeth , Tarayre Jacques , Golzio Muriel , Vezinet René , Rols Marie-Pierre
Published: May 2018

Micro applicators for real-time observation of electromagnetic radiation waves effects on giant unilamellar vesicles and mammalian cells.
Long-term antibacterial performances of biodegradable polylactic acid materials with direct absorption of antibiotic agents
Authors: Chen Chien-Hao , Yao Yuan-Yuan , Tang Hao-Che , Lin Tung-Yi , Chen Dave W. , Cheng Kong-Wei
Published: May 2018

In this study, we developed a surface modification of 3D printing PLA disks. The relative optical density of theS. aureusin the solution can reduce to 40% using the PLA disk directly absorbed with suitable antibiotic agents.
Enhanced field emission properties of graphene-based cathodes fabricated by ultrasonic atomization spray
Authors: Wang Qinyu , Zhang Zheng , Liao Qingliang , Kang Zhuo , Zhang Yue
Published: May 2018

Ultrasonic atomization spray endowed graphene cathodes with roughened 3-D array-like surface geometry which greatly enhanced electron emission.
Effect of metabolic uncoupler, 3,3′,4′,5-tetrachlorosalicylanilide (TCS) on Bacillus subtilis: biofilm formation, flocculability and surface characteristics
Authors: Feng Xiao-Chi , Guo Wan-Qian , Zheng He-Shan , Wu Qing-Lian , Luo Hai-Chao , Ren Nan-Qi
Published: May 2018

This study aimed to investigate the inhibitory mechanism of metabolic uncoupler on biofilm formation through surface characteristics and thermodynamics analysis.
Template-free synthesis of metal oxide hollow micro-/nanospheresviaOstwald ripening for lithium-ion batteries
Authors: Weng Wangsuo , Lin Jun , Du Yichen , Ge Xufang , Zhou Xiaosi , Bao Jianchun
Published: May 2018

This review summarizes the template-free synthesis of some metal oxide hollow micro-/nanospheres based on Ostwald ripening for lithium-ion batteries.
Polycarbonate-based core-crosslinked redox-responsive nanoparticles for targeted delivery of anticancer drug
Authors: Xia Yingchun , Wang Ningning , Qin Zhouliang , Wu Juan , Wang Fang , Zhang Li , Xia Xinnian , Li Jishan , Lu Yanbing
Published: May 2018

A facile strategy for the construction of core-crosslinked redox-responsive nanoparticles was established, which can efficiently regulate the drug release and antitumor activity.
Smart gold nanoparticle-stabilized ultrasound microbubbles as cancer theranostics
Authors: Yoon Young Il , Pang Xin , Jung Sungwook , Zhang Guofeng , Kong Minsuk , Liu Gang , Chen Xiaoyuan
Published: May 2018

Smart gold nanoparticle-stabilized ultrasound microbubbles (SAuMBs) having diagnostic (US and PAT) and therapeutic (PTT) effects were applied as cancer theranostics.
Multidrug-eluting bi-layered microparticle-mesh scaffolds for musculoskeletal tissue regeneration
Authors: Chamundeswari Vidya N. , Chuah Yon Jin , Loo Say Chye Joachim
Published: May 2018

The differentiation of MSCs into musculoskeletal tissues has been demonstrated using an electrospun, bi-layered micro particle mesh scaffold (BMMS), that can simultaneously host and release up to three bioactive agents.
Heteronuclear {TbxEu1−x} furoate 1D polymers presenting luminescent properties and SMM behavior
Authors: Bartolomé E. , Bartolomé J. , Arauzo A. , Luzón J. , Cases R. , Fuertes S. , Sicilia V. , Sánchez-Cano A. I. , Aporta J. , Melnic S. , Prodius D. , Shova S.
Published: May 2018

New synthesized polymeric mixed complexes {TbxEu1−x} exhibit both tunable luminescence and SMM behavior.
The functional principle of eukaryotic molybdenum insertases
Authors: Krausze Joern , Hercher Thomas W. , Zwerschke Dagmar , Kirk Martin L. , Blankenfeldt Wulf , Mendel Ralf R. , Kruse Tobias
Published: May 2018

The molybdenum cofactor (Moco) is a redox-active prosthetic group found in the active site of Moco-dependent enzymes, which are vitally important for life. Moco biosynthesis involves several enzymes that catalyze the subsequent conversion of GTP into cyclic pyranopterin monophosphate (cPMP), molybdopterin (MPT), adenylated MPT (MPT-AMP), and finally Moco. While the underlying principles of cPMP, MPT, and MPT-AMP formation are well understood, the molybdenum insertase (Mo-insertase)-catalyzed final Moco maturation step is not. In the present study, we analyzed high-resolution X-ray datasets of the plant Mo-insertase Cnx1E that revealed two molybdate-binding sites within the active site, hence improving the current view on Cnx1E functionality. The presence of molybdate anions in either of these sites is tied to a distinctive backbone conformation, which we suggest to be essential for Mo-insertase molybdate selectivity and insertion efficiency.
The type IV pilus assembly motor PilB is a robust hexameric ATPase with complex kinetics
Authors: Sukmana Andreas , Yang Zhaomin
Published: May 2018

The bacterial type IV pilus (T4P) is a versatile nanomachine that functions in pathogenesis, biofilm formation, motility, and horizontal gene transfer. T4P assembly is powered by the motor ATPase PilB which is proposed to hydrolyze ATP by a symmetrical rotary mechanism. This mechanism, which is deduced from the structure of PilB, is untested. Here, we report the first kinetic studies of the PilB ATPase, supporting co-ordination among the protomers of this hexameric enzyme. Analysis of the genome sequence of Chloracidobacterium thermophilum identified a pilB gene whose protein we then heterologously expressed. This PilB formed a hexamer in solution and exhibited highly robust ATPase activity. It displays complex steady-state kinetics with an incline followed by a decline over an ATP concentration range of physiological relevance. The incline is multiphasic and the decline signifies substrate inhibition. These observations suggest that variations in intracellular ATP concentrations may regulate T4P assembly and T4P-mediated functions in vivo in accordance with the physiological state of bacteria with unanticipated complexity. We also identified a mutant pilB gene in the genomic DNA of C. thermophilum from an enrichment culture. The mutant PilB variant, which is significantly less active, exhibited similar inhibition of its ATPase activity by high concentrations of ATP. Our findings here with the PilB ATPase from C. thermophilum provide the first line of biochemical evidence for the co-ordination among PilB protomers consistent with the symmetrical rotary model of catalysis based on structural studies.
A comprehensive evaluation for polymorphisms in let-7 family in cancer risk and prognosis: a system review and meta-analysis
Authors: Wang Ben-Gang , Jiang Li-Yue , Xu Qian
Published: May 2018

miRNA polymorphisms had potential to be biomarkers for cancer susceptibility and prognosis. The mature miRNA-let-7 family was considered as the most important miRNA for the cancer incidence and progression. Recently, the promising let-7 miRNAs were reported to be associated with various cancers, but the results were inconsistent. We performed a first-reported systematic review with a meta-analysis for the association of let-7 family single nucleotide polymorphisms (SNPs) with cancer risk/prognosis. Ten studies were included with a total of 3878 cancer cases and 4725 controls for the risk study and 1665 cancer patients for the prognosis study in this meta-analysis. In the risk study, the let-7i rs10877887 and let-7a-1/let-7f-1/let-7d rs13293512 were shown no significant association for the overall cancer risk. In the stratified analysis, the rs10877887 variant genotype was significantly associated with a decreased cancer risk in head and neck cancer (TC compared with TT: P=0.017; odds ratio (OR) = 0.81; TC + CC compared with TT: P=0.020; OR = 0.82). In the prognosis study, the let-7i rs10877887 SNP was shown to be associated with a higher risk for cancer prognosis in the dominate model (P=0.004; hazard ratio (HR) = 1.32). The other two SNPs (let-7a-1 rs10739971 and let-7a-2 rs629367) were not found to be associated with cancer survival. None of the let-7 family polymorphisms had potential to be biomarkers for cancer susceptibility but let-7i rs10877887 SNP had potential to be predicting markers for cancer prognosis. In the future, large-sample studies are still needed to verify our findings.
Manned self‐balanced vehicle control system based on pressure sensors for steering
Authors: Xia Kun , Li Zheng , Tang Yusong , Ye Yanhong , Zhu Feng
Published: May 2018

A new steering mechanical structure and an improved control method of the manned self‐balanced vehicle are presented in this Letter. An effective method is introduced to calculate the real‐time inclination of the vehicle. Then, the integrating inclination of the vehicle could be obtained by the complementary filter and proportional derivative (PD) algorithm. In addition, the control system could be regarded as a linear superposition of three parts, including the balance control, the speed control and the steering control. Moreover, the proportional, integral and derivative (PID) parameters of the whole control system are different under different operational conditions. Furthermore, the pressure sensors placed on the left and right pedals could detect the change of the weight, which simplifies the mechanical structure and improves the flexibility of the manned steering. The experiments in the prototype are designed to prove the steering structure and the improved method.
Interval type‐2 fuzzy‐logic‐based decision fusion system for air‐lane monitoring
Authors: Shrinivasan Lakshmi , Raol Jitendra R.
Published: May 2018

Eliminating mishaps due to human error is a primary focus of the avionics industry. Air‐lane monitoring is critical to avert occurrences of such mishaps and is achieved using intelligence imparting techniques. Fuzzy logic is one such technique, which incorporates human knowledge for decision making with ease. Type‐1 fuzzy logic for decision fusion is established to be advantageous for air‐lane monitoring considering sensor input data. Decision making capabilities of type‐1 systems are inconsistent when uncertainties or noise is present in the input data. To overcome this issue, this study discusses on interval type‐2 fuzzy logic‐based decision fusion software (IT2FLDS) for air‐lane monitoring. IT2FLDS is realised using an interval type‐2 Mamdani model. Experimental results presented prove that IT2FLDS exhibits better decision making capabilities when compared with type‐1 fuzzy logic systems considering uncertainties in input sensor data. IT2FLDS is further extended to include flight level parameters for air‐lane monitoring. Results presented prove that IT2FLDS works better than its type‐1 counterpart when flight level examples are considered. Using type‐2 fuzzy logic systems for avionics problems related to air‐lane discipline is advocated.
Past and future on nanodielectrics
Authors: Zhong Shao‐Long , Dang Zhi‐Min , Zhou Wen‐Ying , Cai Hui‐Wu
Published: May 2018

Flexible polymer‐matrix nanodielectrics have recently been attracting more attention in the fields of frontier research internationally since the beginning of the 21st century. It would accelerate a technical reformation for the applications in new energies, bioscience and biomedical engineering, artificial intelligence, electronic skin, wearable electronic clothing, Internet of things, and electrical insulation. This review summarises the recent development and achievements of nanodielectrics, including space charge suppression, high energy density storage, partial discharge resistance, non‐linear field grading properties, high thermal conductivity, and future applications in biomedical area. Special attention is given to two representative interface models that are the Lewis's diffusion electrical double‐layer model and Tanaka's multi‐core model. At last, some issues related to the technology of nanodielectrics have also been discussed.
Frequency diverse array radar signal and data processing
Authors: Dong Yunhan
Published: May 2018

The frequency diverse array (FDA) radar is re‐explored with a special focus on how the FDA data should be correctly and efficiently processed to maximise its full potential and capacity of search and detection. Some features, such as its extraordinary Doppler tolerance and ability of resolving range ambiguity without using multiple pulse repetition frequencies, are first demonstrated. The extension of non‐linear and random frequency increments is proposed in order to suppress range sidelobes and increase range resolution. Wide‐area search and detection is achieved by processing the same received data set without a need of electronic scan and repeat pulse transmission and reception. This not only greatly simplifies the radar design and operation but also makes radar quieter and stealth. The limitation of the FDA radar is its sacrificed detection range. Therefore, in comparison with the conventional phased‐array radar, the detection area is fan‐area‐like for the former and pencil‐beam‐like for the latter, making two radars (or radar operation modes) complementary.
Solar hard X-ray imaging by means of compressed sensing and finite isotropic wavelet transform
Authors: Duval-Poo M. A. , Piana M. , Massone A. M.
Published: May 2018

Aims. Compressed sensing realized by means of regularized deconvolution and the finite isotropic wavelet transform is effective and reliable in hard X-ray solar imaging.

Methods. The method uses the finite isotropic wavelet transform with the Meyer function as the mother wavelet. Furthermore, compressed sensing is realized by optimizing a sparsity-promoting regularized objective function by means of the fast iterative shrinkage-thresholding algorithm. Eventually, the regularization parameter is selected by means of the Miller criterion.

Results. The method is applied against both synthetic data mimicking measurements made with the Spectrometer/Telescope Imaging X-rays (STIX) and experimental observations provided by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The performances of the method are qualitatively validated by comparing some morphological properties of the reconstructed sources with those of the corresponding synthetic configurations. Furthermore, the results concerning experimental data are compared with those obtained by applying other visibility-based reconstruction methods.

Conclusions. The results show that when the new method is applied to synthetic STIX visibility sets, it provides reconstructions with a spatial accuracy comparable to the accuracy provided by the most popular method in hard X-ray solar imaging and with a higher spatial resolution. Furthermore, when it is applied to experimental RHESSI data, the reconstructions are characterized by reliable photometry and by a notable reduction of the ringing effects caused by the instrument point spread function.
The evolving jet spectrum of the neutron star X-ray binary Aql X-1 in transitional states during its 2016 outburst
Authors: Díaz Trigo M. , Altamirano D. , Dinçer T. , Miller-Jones J. C. A. , Russell D. M. , Sanna A. , Bailyn C. , Lewis F. , Migliari S. , Rahoui F.
Published: May 2018

We report on quasi-simultaneous observations from radio to X-ray frequencies of the neutron star X-ray binary Aql X-1 over accretion state transitions during its 2016 outburst. All the observations show radio to millimetre spectra consistent with emission from a jet, with a spectral break from optically thick to optically thin synchrotron emission that decreases from ~100 GHz to <5.5 GHz during the transition from a hard to a soft accretion state. The 5.5 GHz radio flux density as the source reaches the soft state, 0.82 ± 0.03 mJy, is the highest recorded to date for this source. During the decay of the outburst, the jet spectral break is detected again at a frequency of ~30–100 GHz. The flux density is 0.75 ± 0.03 mJy at 97.5 GHz at this stage. This is the first time that a change in the frequency of the jet break of a neutron star X-ray binary has been measured, indicating that the processes at play in black holes are also present in neutron stars, supporting the idea that the internal properties of the jet rely most critically on the conditions of the accretion disc and corona around the compact object, rather than the black hole mass or spin or the neutron star surface or magnetic field.
Small molecule biomarkers in Alzheimer’s disease
Authors: Kim Min , Legido-Quigley Cristina
Published: May 2018

Alzheimer’s disease (AD) is a progressive neurodegenerative disease which affects a growing number of people as the population ages worldwide. Alzheimer’s Disease International estimated that more than 100 million people will be living with dementia by 2050. At present there are no disease-modifying therapies and research has expanded to the −omic sciences with scientists aiming to get a holistic view of the disease using systems medicine. Metabolomics and Lipidomics give a snap-shot of the metabolism. As analyzing the brainin vivois difficult, the metabolic information of the periphery has potential to unravel mechanisms that have not been considered, such as those that link the brain to the liver and the gut or other organs. With that in mind we have produced a mini-review, to record a number of studies in the field and the molecular pathways that have been flagged in animal and human models of AD. Human studies deal with cohorts in the order of the hundreds due to the difficulty of organizing AD studies, however it is possible that these first pilots point towards important mechanisms. The trend in these small studies is the involvement of many organs and pathways. Some findings, that have been reproduced, are ceramides being increased, phospholipids and neurotransmitters depleted and sterols being found depleted too. Initial findings point to an important role to lipid homeostasis in AD, this is not surprising as the brain’s main constituents are water and lipids.
A weak perturbation theory for approximations of invariant measures in M/G/1 model
Authors: Issaadi Badredine , Abbas Karim , Aïssani Djamil
Published: May 2018

The calculation of the stationary distribution for a stochastic infinite matrix is generally difficult and does not have closed form solutions, it is desirable to have simple approximations converging rapidly to this distribution. In this paper, we use the weak perturbation theory to establish analytic error bounds for the M/G/1 model. Numerical examples are carried out to illustrate the quality of the obtained error bounds.
Hybrid algorithms for the earliness–tardiness single-machine multiple orders per job scheduling problem with a common due date
Authors: Rocholl Jens , Mönch Lars
Published: May 2018

In this paper, we study an earliness–tardiness scheduling problem for a single machine that is motivated by process conditions found in semiconductor wafer fabrication facilities (wafer fabs). In modern 300-mm wafer fabs, front opening unified pods (FOUPs) transfer wafers. The number of FOUPs is limited to avoid a congestion of the Automated Material Handling System. Several orders can be grouped in one FOUP. A nonrestrictive common due date for all the orders is assumed. Only orders that belong to the same family can be processed together in a single FOUP at the same time. We present a Mixed Integer Linear Programming (MILP) formulation for this problem. Moreover, we show that this scheduling problem is NP-hard. We propose several simple heuristics based on dispatching rules and assignment strategies from bin packing. Moreover, genetic algorithms are designed that assign the orders to the set of early and tardy orders, respectively. In addition, a random key genetic algorithm (RKGA) is described that proposes order sequences. The different algorithms are hybridized with job formation and sequencing heuristics. A more specialized algorithm that is based on the generalized assignment problem is presented for the special case of a single order family. Results of computational experiments based on randomly generated problem instances are presented. They demonstrate that the genetic algorithms perform well with respect to solution quality and computing time under a broad range of experimental conditions.
Effects of dominance on operation policies in a two-stage supply chain in which market demands follow the Bass diffusion model
Authors: Phuc Phan Nguyen Ky , Yu Vincent F. , Chou Shuo-Yan , Tsao Yu-Chung
Published: May 2018

The Bass model offers several successful applications in forecasting the diffusion process of new products. Due to its potential and flexibilities, the application of this model is not only limited now to forecasting, but also extends to other fields such as analyzing a supply chain’s responses, optimizing production plans, and so forth. This study investigates inventory and production policies in a two-stage supply chain with one manufacturer and one retailer, in which the market demand process follows the Bass diffusion model. The model assumes the market parameters and essential information are available and ready for access. This study then applies dynamic programming and heuristic algorithm to find the optimal policies for each stage under different scenarios.
Ground-based measurements of ionospheric dynamics
Authors: Kouba Daniel , Chum Jaroslav
Published: May 2018

Different methods are used to research and monitor the ionospheric dynamics using ground measurements: Digisonde Drift Measurements (DDM) and Continuous Doppler Sounding (CDS). For the first time, we present comparison between both methods on specific examples. Both methods provide information about the vertical drift velocity component. The DDM provides more information about the drift velocity vector and detected reflection points. However, the method is limited by the relatively low time resolution. In contrast, the strength of CDS is its high time resolution. The discussed methods can be used for real-time monitoring of medium scale travelling ionospheric disturbances. We conclude that it is advantageous to use both methods simultaneously if possible. The CDS is then applied for the disturbance detection and analysis, and the DDM is applied for the reflection height control.
Randomized (CO)mparison of (TRI)fecta and (P)erimount Magna Ease Supraannular Aortic Xenografts—CO.TRI.P Study
Authors: Van Linden Arnaud , Arsalan Mani , Körschgen Thore , Blumenstein Johannes , Kempfert Jörg , Hecker Florian , Walther Thomas
Published: May 2018

Background Modern supraannular aortic xenografts offer a special design, thus providing maximized opening area for improved hemodynamics. The aim of this study was a prospectively randomized comparison of the Trifecta and the Perimount Magna Ease valves based on metric annulus sizing.

Methods A total of 100 patients with aortic stenosis undergoing aortic valve replacement (AVR) with or without concomitant procedures were prospectively included. After decalcification of the annulus, stratified intraoperative randomization was performed. The diameter of the aortic annulus was measured using metric Hegar dilators and randomization was based on this metric annulus diameter. Exercise echocardiography was performed at 10-month follow-up.

Results Mean age was 69 years, with 36% female. Predominant implanted valve sizes were 23 mm (39%) and 25 mm (32%). Unadjusted mean pressure gradient was significantly lower and effective orifice area larger for the Trifecta group (10.8 ± 5 vs. 13.2 ± 4 mm Hg, p = 0.02 and 1.93 ± 0.39 vs. 1.70 ± 0.30 cm2, p = 0.002) at discharge. In patients with small annuli, based on the metric annulus size there were no significant differences in gradients or the orifice area. At exercise echocardiography follow-up, there were no significant hemodynamic differences between both prostheses.

Conclusions The Trifecta and the Perimount Magna Ease prostheses both show excellent hemodynamic performance after AVR. In patients with larger annuli, the Trifecta valve seems to be even superior to the Magna Ease, which may be advantageous in obese patients.
New Algorithm for the Management of Orbital Blowout Fracture Based on Prospective Study
Authors: Alinasab Babak , Borstedt Karl-Johan , Rudström Rebecka , Ryott Michael , Qureshi Abdul Rashid , Beckman Mats O. , Stjärne Pär
Published: May 2018

Despite extensive debate and publications in the management of blowout fracture (BOF), there are still considerable differences in the surgeons’ management of BOF due to a lack of reliable evidence-based studies. This article aimed to evaluate which BOF patients require surgical treatment due to functional and/or cosmetic deformities; evaluate which computed tomography (CT) scan findings predict these problems; and provide an algorithm in the management of BOF. Seventy-nine patients with BOF were treated conservatively and followed up prospectively regarding functional and cosmetic deformities for at least 1 year. The patients’ CT scans were analyzed and several measurements were performed. Patients’ symptoms and the clinical findings were correlated to the CT scan measurements. We found visible deformity in 37% of the patients, but only 10% chose to proceed to surgery due to cosmetic deformities. In patients with inferior BOF and a herniation < 1.0 mL, a visible deformity was found when the ratio between fracture and the fractured orbital wall areas was ≥42%, or the total area of the fracture was ≥ 2.3 cm2. In patients with inferior BOF and a herniation ≥ 1.0 mL, a visible deformity was found when the distance from the inferior orbital rim to the posterior edge of the fracture was ≥ 3.0 cm. In patients with inferomedial fracture, a visible deformity was found when the herniation was ≥ 0.9 mL. Diplopia improved significantly and remained in only 3% of the patients in nonoperated group. Hypoesthesia of the infraorbital nerve improved significantly, but 23% of the nonoperated and 50% of the operated patients still experienced loss of sensation at final control. In this prospective study, we found that not only herniated orbital volume but also other CT scan findings in BOF were crucial to predict late visible deformities. Based on these findings, we propose an algorithm for the prediction of late visible deformity with 83% accuracy. There are indications that diplopia without ocular motility disorder is due to edema and we recommend observation as long as the diplopia improves gradually.
Robotic-Arm Assisted Total Knee Arthroplasty Demonstrated Greater Accuracy and Precision to Plan Compared with Manual Techniques
Authors: Hampp Emily , Chughtai Morad , Scholl Laura , Sodhi Nipun , Bhowmik-Stoker Manoshi , Jacofsky David , Mont Michael
Published: May 2018

This study determined if robotic-arm assisted total knee arthroplasty (RATKA) allows for more accurate and precise bone cuts and component position to plan compared with manual total knee arthroplasty (MTKA). Specifically, we assessed the following: (1) final bone cuts, (2) final component position, and (3) a potential learning curve for RATKA. On six cadaver specimens (12 knees), a MTKA and RATKA were performed on the left and right knees, respectively. Bone-cut and final-component positioning errors relative to preoperative plans were compared. Median errors and standard deviations (SDs) in the sagittal, coronal, and axial planes were compared. Median values of the absolute deviation from plan defined the accuracy to plan. SDs described the precision to plan. RATKA bone cuts were as or more accurate to plan based on nominal median values in 11 out of 12 measurements. RATKA bone cuts were more precise to plan in 8 out of 12 measurements (p ≤ 0.05). RATKA final component positions were as or more accurate to plan based on median values in five out of five measurements. RATKA final component positions were more precise to plan in four out of five measurements (p ≤ 0.05). Stacked error results from all cuts and implant positions for each specimen in procedural order showed that RATKA error was less than MTKA error. Although this study analyzed a small number of cadaver specimens, there were clear differences that separated these two groups. When compared with MTKA, RATKA demonstrated more accurate and precise bone cuts and implant positioning to plan.
Epidemiology and Outcome of Major Congenital Malformations in a Large German County
Authors: Wittekindt Boris , Schloesser Rolf , Doberschuetz Nora , Salzmann-Manrique Emilia , Grossmann Jasmin , Misselwitz Bjoern , Rolle Udo
Published: May 2018

Introduction Congenital malformations are associated with substantial neonatal morbidity and mortality. Furthermore, only sparse data are available on the modalities of care provided to and the associated clinical outcomes in affected neonates. In this study, we focused on five malformations that require surgery during the neonatal period: duodenal stenosis and atresia (DA), gastroschisis (GA), omphalocele (OM), congenital diaphragmatic herniation (CDH), and esophageal atresia (EA).

Materials and Methods We reviewed the Hessian neonatal registry (2010–2015) to identify records including the ICD-10 (International Classification of Diseases, Tenth Edition) codes for the aforementioned diagnoses and identified 283 patients who were affected by at least one of these conditions. Multiple regression analyses were performed to further identify risk factors for mortality and extended length of hospital stay.

Results The incidence rates per 10,000 live births and inhospital mortality rates were as follows: DA: 1.79 and 3.6%; GA: 1.79 and 1.8%; OM: 1.60 and 24%; CDH: 1.32 and 27.5%; and EA: 2.67 and 11.1%, respectively. Thirty-three percent of the patients had not been born in a perinatal center in which corrective surgeries were performed. The following risk factors were significantly associated with early mortality: trisomy 13 and 18, congenital heart defects, prematurity, and high-risk malformations (OM and CDH). The predictors of length of stay were as follows: gestational age, number of additional malformations, and treatment in the center with the highest patient volume.

Conclusion Epidemiology and outcome of major congenital malformations in Hesse, Germany, are comparable to previously published data. In addition, our data revealed a volume–outcome association with regard to the length of hospital stay.
Needlescopic Video-Assisted Thoracic Bilateral T4 Sympathicotomy for the Treatment of Primary Palmar Hyperhidrosis: An Analysis of 200 Cases
Authors: Feng Xing , Xiong Xiaoling , Jin Er , Meng Wen
Published: May 2018

Background Primary palmar hyperhidrosis (PPH) is featured by aberrantly perspiration of the hands, which may bring a lot of inconvenience to patient's daily life and work. The purpose of this study is to summarize the clinical effect of needlescopic video-assisted thoracic bilateral T4 sympathicotomy for the treatment of PPH.

Patients and Methods Between January 2009 and March 2014, 200 patients received needlescopic video-assisted thoracic bilateral T4 sympathicotomy. We, respectively, took two 5-mm incisions in the third intercostal space on the anterior axillary line and in the fifth intercostal space on the middle axillary line. After collapsing left lung, needlescopic exploration was the first step to determine the targeted sympathetic chain through the third intercostal space. Electric coagulation hook was inserted from another port to cut T4 sympathetic chain and the bypassing nerve fibers for 2 to 3 cm along the surface of the fourth rib. Right thoracic cavity was also administered the same procedure. The palmar temperature was recorded before and after sympathicotomy. The symptom improvement, operative complications, patients' recovery, and satisfaction were evaluated.

Finding One hundred and ninety-seven patients uneventfully received two 5-mm port bilateral sympathicotomy, and another 3 patients with extensive pleural adhesions completed the surgery through enlarging the third intercostal incision to 2 cm without conversion to open surgery. All operative procedures were completed in 15 to 35 minutes. The hospital stay was 2 to 4 days. The palmar temperature increased by 2.0 ± 0.5°C, and hyperhidrosis immediately disappeared in both hands after surgery. The efficacy rate was 100%. The postoperative complications such as hemorrhage, hemopneumothorax, bradycardia, or Horner's syndrome had no occurrence. During 6 to 60 months follow-up, mild compensatory sweating of buttock, back, and thigh occurred in 30 patients (15%) at 2 to 5 days after surgery and gradually disappeared at postoperative 15 to 30 days or longer time. All patients were greatly satisfied with the effect with better confidence and quality of life. Until now, no recurrent palmar hyperhidrosis happened.

Conclusion Needlescopic video-assisted thoracic bilateral T4 sympathicotomy could reach an excellent and immediate result of treating PPH. It is a safe, convenient, and minimally invasive method appropriate for wide clinical use.
Incidence and Risk Factors for Right Ventricular Outflow Tract Obstruction after the Arterial Switch Operation
Authors: Vitanova Keti , Pabst von Ohain Jelena , Ono Masamichi , Tanase Daniel , Burri Melchior , Lange Rüdiger , Cleuziou Julie
Published: May 2018

Background The aim of this study was to evaluate the incidence and risk factors for the development of right ventricular outflow tract obstruction (RVOTO) after the arterial switch operation (ASO).

Methods Between 1983 and 2014, a total of 688 patients underwent ASO. RVOTO was defined as any obstruction of the right ventricular outflow tract (RVOT) requiring reintervention.

Results RVOTO developed in 79 patients (11%) at a median time of 3.8 years (range, 1 day–23.6 years) after ASO. Freedom from RVOT reintervention was 96 ± 1, 89 ± 1, and 83 ± 2% at 1, 10, and 25 years, respectively. Independent risk factors for the development of RVOTO in a Cox's regression model were side-by-side great arteries (p < 0.001), aortic arch anomalies (p < 0.001), use of a pericardial patch for augmentation of the coronary buttons (p < 0.001), and a peak gradient more than 20 mm Hg over the RVOT at discharge (p < 0.001).

Conclusion The incidence of RVOTO after ASO is not negligible. Complex morphology, such as side-by-side great arteries and aortic arch anomalies influences the development of RVOTO.