bluuebunny/crossref_metadata_2025 huggingface dataset:
Upfront surgery and pathological stage-based adjuvant chemoradiation strategy in locally advanced esophageal squamous cell carcinoma
Authors: Chen Hui-Shan , Hsu Po-Kuei , Liu Chia-Chuan , Wu Shiao-Chi
Published: January 2018

Adjuvant chemoradiation is reported to have a survival benefit for esophageal squamous cell carcinoma (ESCC). We evaluated the “upfront surgery and pathological stage-based adjuvant chemoradiation” strategy, in which adjuvant therapy is guided by pathological stage, in locally advanced ESCC. Data from 2976 clinical stage II/III ESCC patients, including 1735 in neoadjuvant chemoradiation and 1241 in upfront surgery groups, were obtained from a nationwide database. Patients in the upfront surgery group were further categorized into the “upfront surgery and pathological stage-based adjuvant chemoradiation” and “upfront surgery only” groups. The 3-year overall survival (OS) rates in the “neoadjuvant chemoradiation”, “upfront surgery and pathological stage-based adjuvant chemoradiation”, and “upfront surgery only” groups were 41.5%, 45.8%, and 28.5%, respectively. In propensity score matched patients, the 3-year OS rate was 41.7% in the neoadjuvant chemoradiation group, compared to 35.6% in the “upfront surgery and pathological stage-based adjuvant chemoradiation” group (p = 0.147), and 20.3% in the “upfront surgery only” group (p < 0.001). No survival difference was observed between the “neoadjuvant chemoradiation followed by surgery” protocol and the “upfront surgery and pathological stage-based adjuvant chemoradiation” strategy.
Development and testing of a novel micro-Raman probe and application of calibration method for the quantitative analysis of microfluidic nitric acid streams
Authors: Nelson Gilbert L. , Lines Amanda M. , Casella Amanda J. , Bello Job M. , Bryan Samuel A.
Published: January 2018

To simplify and improve the safety of reprocessing nuclear fuel, the Micro-Raman technique was applied at the microfluidic scale with a view toward the on-line spectroscopic measurement of radioactive solutions.
The inverse electron-demand Diels–Alder reaction as a new methodology for the synthesis of225Ac-labelled radioimmunoconjugates
Authors: Poty S. , Membreno R. , Glaser J. M. , Ragupathi A. , Scholz W. W. , Zeglis B. M. , Lewis J. S.
Published: January 2018

The inverse electron-demand Diels–Alder reaction between tetrazine andtrans-cyclooctene facilitates the efficient radiosynthesis of225Ac-radioimmunoconjugates in a two-step method.
A general strategy for diverse syntheses of anhydrolandomycinone, tetrangulol, and landomycinone
Authors: Sie Cheng-Jhe , Patteti Venukumar , Yang Yi-Ru , Mong Kwok-Kong Tony
Published: January 2018

A protecting group promoted-CH arylation strategy for the total synthesis of landomycinone and related core structures.
Real time monitoring of the minute dynamic variation at the crude oil–water interface
Authors: Duan Ming , Ding Ziling , Wang Hu , Xiong Yan
Published: January 2018

Minute mass variations caused by SDS injection and the corresponding interaction process at the interface.
Hydrogen bonding effect between active site and protein environment on catalysis performance in H2-producing [NiFe] hydrogenases
Authors: Qiu Siyao , Azofra Luis Miguel , MacFarlane Douglas R. , Sun Chenghua
Published: January 2018

The interaction between the active site and the surrounding protein environment plays a fundamental role in the hydrogen evolution reaction (HER) in [NiFe] hydrogenases.
High-pressure dissociation of selenium and tellurium
Authors: Li Xin , Huang Xiaoli , Wang Xin , Liu Mingkun , Wu Gang , Huang Yanping , He Xin , Li Fangfei , Zhou Qiang , Liu Bingbing , Cui Tian
Published: January 2018

The soft amplitude (AMP) mode demonstrates pressure-induced commensurate–incommensurate–atomic phase transitions.
Dynamics and ionic conductivity of ionic liquid crystals forming a hexagonal columnar mesophase
Authors: Yildirim Arda , Szymoniak Paulina , Sentker Kathrin , Butschies Martin , Bühlmeyer Andrea , Huber Patrick , Laschat Sabine , Schönhals Andreas
Published: January 2018

For the first time, the molecular mobility of two linear-shaped tetramethylated guanidinium triflate ionic liquid crystals (ILCs) having different lengths of alkyl chains was investigated using a combination of broadband dielectric (BDS) and specific heat spectroscopy (SHS).
Non-linear and non-local behaviour in spontaneously electrical solids
Authors: Roman M. , Taj S. , Gutowski M. , McCoustra M. R. S. , Dunn A. C. , Keolopile Z. G. , Rosu-Finsen A. , Cassidy A. M. , Field D.
Published: January 2018

We show that solids displaying spontaneous dipole orientation possess quite general non-local and non-linear characteristics expressed through their internal electric fields.
A continuing challenge: N-heterocyclic carbene-catalyzed syntheses of γ-butyrolactones
Authors: Murauski Kathleen J. R. , Jaworski Ashley A. , Scheidt Karl A.
Published: January 2018

Catalytic, stereoselective N-heterocyclic carbene-catalyzed reactions facilitate efficient construction of many different heterocyclic compounds, such as the enantioenriched 5-membered (γ) lactones highlighted in this tutorial review.
Lysozyme and DNA binding affinity of Pd(ii) and Pt(ii) complexes bearing charged N,N-pyridylbenzimidazole bidentate ligands
Authors: Mansour Ahmed M. , Shehab Ola R.
Published: January 2018

The 2-pyridylbenzimidazole Pt(ii) complex functionalized with triphenylphosphonium interacts covalently with lysozyme via the loss of labile ligands and the departure of the TPP+ part.
The effect of vitamin C and iron on dopamine-mediated free radical generation: implications to Parkinson's disease
Authors: Sun Yingying , Pham An Ninh , Waite T. David
Published: January 2018

While the application of Asc alone may aggravate the progression of PD in view of the possible peroxidation of Asc bound Fe(ii), a combination therapy of Asc and strong clinically appropriate iron chelator would appear to be a promising direction for the treatment of PD as a result of the enhanced iron chelation and attenuation in oxidative stress and toxicity induced by DA derived quinones.
Facile synthesis of a cationic-doped [Ca24Al28O64]4+(4e−) compositeviaa rapid citrate sol–gel method
Authors: Khan Karim , Khan Tareen Ayesha , Elshahat Sayed , Yadav Ashish , Khan Usman , Yang Minghui , Bibbò Luigi , Ouyang Zhengbiao
Published: January 2018

We have presented a general strategy for the synthesis of novel nanocrystalline [Ca24Al28O64]4+(4e−) composite and the corresponding materials doped with Si/Ga cations.
Renewable thermoset polymers based on lignin and carbohydrate derived monomers
Authors: Jiang Yuan , Ding Duanchen , Zhao Shou , Zhu Hanyu , Kenttämaa Hilkka I. , Abu-Omar Mahdi M.
Published: January 2018

With limited current biomass utilization as a renewable resource, it is important to develop a method to convert biomass into materials to replace fossil fuel products.
Mesoporous fullerene C70 cubes with highly crystalline frameworks and unusually enhanced photoluminescence properties
Authors: Bairi Partha , Tsuruoka Tohru , Acharya Somobrata , Ji Qingmin , Hill Jonathan P. , Ariga Katsuhiko , Yamauchi Yusuke , Shrestha Lok Kumar
Published: January 2018

Self-assembled mesoporous fullerene C70 cube-shaped crystals with crystalline frameworks displayed enhanced PL intensity (around 15 times higher intensity compared to bulk C70) due to the high degree of crystallinity in their pore walls.
Efficient aerobic oxidation of alcohols catalyzed by NiGa hydrotalcites in the absence of any additives
Authors: Sun Fuan , Zhou Jiacheng , Zhou Weiyou , Pan Jiugao , Qian Junfeng , He Mingyang , Chen Qun
Published: January 2018

The surface Brønsted OH basic site on NiGa hydrotalcites was suggested to be the key active site for the oxidation.
Fe3O4/ZnFe2O4 micro/nanostructures and their heterogeneous efficient Fenton-like visible-light photocatalysis process
Authors: Liu Jie , Liu Gang , Yuan Chunyan , Chen Lin , Tian Xingyou , Fang Ming
Published: January 2018

A Fenton-like visible-light photocatalyst composed of Fe3O4/ZnFe2O4 micro/nanostructures shows highly efficient photocatalysis in the degradation of R6G.
Visible-light-enabled denitrative carboxylation of β-nitrostyrenes: a direct photocatalytic approach to cinnamic acids
Authors: Tripathi Shubhangi , Yadav Lal Dhar S.
Published: January 2018

A novel, highly stereoselective synthesis of (E)-cinnamic acids from β-nitrostyrenes and CBr4employing visible light photoredox catalysis has been developed.
Clinically approved liposomal nanomedicines: lessons learned from the biomolecular corona
Authors: Caracciolo Giulio
Published: January 2018

The biomolecular corona that forms around liposomes in vivo does confer on them a selective targeting ability.
Enhanced magnetic and thermoelectric properties in epitaxial polycrystalline SrRuO3 thin films
Authors: Woo Sungmin , Lee Sang A , Mun Hyeona , Choi Young Gwan , Zhung Chan June , Shin Soohyeon , Lacotte Morgane , David Adrian , Prellier Wilfrid , Park Tuson , Kang Won Nam , Lee Jong Seok , Kim Sung Wng , Choi Woo Seok
Published: January 2018

Modification of the physical properties of transition metal oxide thin films via deliberately introducing structural domain boundaries.
[C6H14N]PbI3: a one-dimensional perovskite-like order–disorder phase transition material with semiconducting and switchable dielectric attributes
Authors: Zeb Aurang , Sun Zhihua , Khan Asma , Zhang Shuquan , Khan Tariq , Asghar Muhammad Adnan , Luo Junhua
Published: January 2018

Here we report a new one-dimensional organic–inorganic hybrid, adopting an ABX3 perovskite-like architecture, which exhibits semiconducting and switchable dielectric attributes.
Label-free identification carbapenem-resistant Escherichia coli based on surface-enhanced resonance Raman scattering
Authors: Li Jia , Wang Chongwen , Kang Haiquan , Shao Liting , Hu Lulu , Xiao Rui , Wang Shengqi , Gu Bing
Published: January 2018

In this study, a surface-enhanced resonance Raman scattering (SERRS) method has been developed for the accurate detection and identification of carbapenem-resistant and carbapenem-sensitive Escherichia coli.
Systematic investigation of functional ligands for colloidal stable upconversion nanoparticles
Authors: Duong Hien T. T. , Chen Yinghui , Tawfik Sherif Abdulkader , Wen Shihui , Parviz Maryam , Shimoni Olga , Jin Dayong
Published: January 2018

Here we quantitatively investigate the competitive adsorption of polymers bearing phosphate, carboxylic acid and sulphonic acid anchoring groups onto the surface of UCNPs and study their binding strength to identify the best conjugation strategy.
Correction: Dye-sensitized electron transfer from TiO2 to oxidized triphenylamines that follows first-order kinetics
Authors: DiMarco Brian N. , Troian-Gautier Ludovic , Sampaio Renato N. , Meyer Gerald J.
Published: January 2018

Correction for ‘Dye-sensitized electron transfer from TiO2 to oxidized triphenylamines that follows first-order kinetics’ by Brian N. DiMarco et al., Chem. Sci., 2018, DOI: 10.1039/c7sc03839a.
Thermally activated motion of a contact line over defects
Authors: Perrin Hugo , Lhermerout Romain , Davitt Kristina , Rolley Etienne , Andreotti Bruno
Published: January 2018

At the nanometer scale, the motion of a contact line separating a dry from a wet region is limited by the presence of surface heterogeneities that pin it.
A novel fibroblast activation protein-targeted near-infrared fluorescent off–on probe for cancer cell detection, in vitro and in vivo imaging
Authors: Xing Jie , Gong Qiuyu , Zou Ruifen , Li Zihou , Xia Yuanzhi , Yu Zhangsen , Ye Yufan , Xiang Lingchao , Wu Aiguo
Published: January 2018

Design and synthesis of a novel fibroblast activation protein “off–on” near-infrared fluorescent probe for cell detection, in vitro and in vivo imaging.
A well-organized graphene nanostructure for versatile strain-sensing application constructed by a covalently bonded graphene/rubber interface
Authors: Guo Quanquan , Luo Yongyue , Liu Jize , Zhang Xinxing , Lu Canhui
Published: January 2018

A well-organized graphene nanostructure was developed for the versatile strain-sensing applicationviaconstructing a covalently bonded interface between graphene and a rubber matrix.
Correction: 3D polymer objects with electronic components interconnected via conformally printed electrodes
Authors: Jo Yejin , Kim Ju Young , Jung Sungmook , Ahn Bok Yeop , Lewis Jennifer A. , Choi Youngmin , Jeong Sunho
Published: January 2018

Correction for ‘3D polymer objects with electronic components interconnected via conformally printed electrodes’ by Yejin Jo, et al., Nanoscale, 2017, 9, 14798–14803.
A Narrative Evaluation of Mandarin-Speaking Children With Language Impairment
Authors: Hao Ying , Sheng Li , Zhang Yiwen , Jiang Fan , de Villiers Jill , Lee Wendy , Liu Xueman Lucy
Published: January 2018

Purpose

We aimed to study narrative skills in Mandarin-speaking children with language impairment (LI) to compare with children with LI speaking Indo-European languages.

Method

Eighteen Mandarin-speaking children with LI (mean age 6;2 [years;months]) and 18 typically developing (TD) age controls told 3 stories elicited using the Mandarin Expressive Narrative Test (de Villiers & Liu, 2014). We compared macrostructure-evaluating descriptions of characters, settings, initiating events, internal responses,plans, actions, and consequences. We also studied general microstructure, including productivity, lexical diversity, syntactic complexity, and grammaticality. In addition, we compared the use of 6 fine-grained microstructure elements that evaluate particular Mandarin linguistic features.

Results

Children with LI exhibited weaknesses in 5 macrostructure elements, lexical diversity, syntactic complexity, and 3 Mandarin-specific, fine-grained microstructure elements. Children with LI and TD controls demonstrated comparable performance on 2 macrostructure elements, productivity, grammaticality, and the remaining 3 fine-grained microstructure features.

Conclusions

Similarities and differences are noted in narrative profiles of children with LI who speak Mandarin versus those who speak Indo-European languages. The results are consistent with the view that profiles of linguistic deficits are shaped by the ambient language. Clinical implications are discussed.
Receding‐horizon OPF for real‐time management of distribution networks
Authors: Robertson James , Harrison Gareth , Wallace Robin
Published: January 2018

This study presents a new formulation for real‐time active network management (ANM) control of distribution networks to maximise energy yield from distributed generation (DG). Coordinated scheduling of renewable DG and distribution network control assets can limit DG curtailment and significantly increase energy yield and economic performance of DG in weak or congested networks. Optimal power flow (OPF) has been employed in the literature for this purpose. However, single time frame snapshot formulations are limited by their narrow interpretation of temporal constraints. Here a formulation is presented for a new receding‐horizon OPF technique to better control real‐time ANM in distribution networks with high levels of temporally and spatially variable renewable DG. It is shown to improve the coordination between time sequences of system dispatch and improve voltage performance.
Development of a real‐scale cooling module for a PV power plant
Authors: Silva Vinícius O. da , Gimenes André L.V. , Udaeta Miguel E.M.
Published: January 2018

The goal of this study is to develop units of a photovoltaic (PV) cooling system and evaluate its performance, aiming at commercial electricity production, once the increase in electricity output is obtained by cooling down the temperature of the PV module. The methodology covers the description of production procedures, control and verification of three different models of the cooling system, of which two are sheet‐and‐tube types, with different diameters of coil curvature (85 and 140 mm), and one is a multi‐channel type model. Results show that the production of the two sheet‐and‐tube models presented no issues during their construction and operating phases, while the multiple‐channel model presented some complications at the construction phase (e.g. the thickness of the sheets hampered the welding process, leading to leakages during the tightness tests). The empirical control tests showed that the temperature of the PV module with a cooling system applied remains lower than the nominal operating cell temperature, whereas the PV modules without a cooling system presented temperatures higher than 68.1°C. Thus, the authors conclude that the most appropriate model for large‐scale production applied at PV systems is the coil one, with 85 mm of the diameter of coil curvature.
Synthesis of SiO2@PAA microspheres and their application for controlling diisooctyl terephthalate migration from flexible PVC materials
Authors: Zhang Bin , Han Jian
Published: January 2018

The preparation of silicon dioxide (SiO2)@poly(acrylic acid) (PAA) microsphere was reported. The modified microspheres can be well dispersed in polyvinyl chloride (PVC) matrix. The structure of SiO2@PAA microspheres can be well‐controlled and its mixtures with chlorinated polyethylene (CPE) for controlling diisooctyl terephthalate (DOTP) migration from PVC matrix. The results showed that the migration of DOTP was decreased with increasing content of SiO2@PAA microspheres, and the use of CPE together with SiO2@PAA microspheres has a synergistic effect on the reduction of DOTP migration. Moreover, CPE can enhance the interface combination between SiO2@PAA microsphere and PVC, and good dispersibility was observed in PVC/CPE/SiO2@PAA composites.
PHENIX Measurements of Heavy Flavor in Small Systems
Authors: Lebedev Alexandre
Published: January 2018

The study of heavy flavor production in proton-nucleus and nucleus-nucleus collisions is a sensitive probe of the hot and dense matter created in such collisions.

Installation of silicon vertex detectors in the PHENIX experiment, and increased performance of the BNL RHIC collider allowed collection of large amount of data on heavy flavor production in small colliding systems.

In this talk we will present recent PHENIX results on open heavy flavor and quarkonia production in p+p, p+A, d+A, and He3+A colliding systems in a broad rapidity range, and discuss how these measurements help us to better understand all stages of nuclear collisions at high energy.
Sound waves in hadronic matter
Authors: Wilk Grzegorz , Włodarczyk Zbigniew
Published: January 2018

We argue that recent high energy CERN LHC experiments on transverse momenta distributions of produced particles provide us new, so far unnoticed and not fully appreciated, information on the underlying production processes. To this end we concentrate on the small (but persistent) log-periodic oscillations decorating the observed pT spectra and visible in the measured ratios R = σdata(pT) / σfit (pT). Because such spectra are described by quasi-power-like formulas characterised by two parameters: the power index n and scale parameter T (usually identified with temperature T), the observed logperiodic behaviour of the ratios R can originate either from suitable modifications of n or T (or both, but such a possibility is not discussed). In the first case n becomes a complex number and this can be related to scale invariance in the system, in the second the scale parameter T exhibits itself log-periodic oscillations which can be interpreted as the presence of some kind of sound waves forming in the collision system during the collision process, the wave number of which has a so-called self similar solution of the second kind. Because the first case was already widely discussed we concentrate on the second one and on its possible experimental consequences.
Phenomenology of anomalous chiral transports in heavy-ion collisions
Authors: Huang Xu-Guang
Published: January 2018

High-energy Heavy-ion collisions can generate extremely hot quark-gluon matter and also extremely strong magnetic fields and fluid vorticity. Once coupled to chiral anomaly, the magnetic fields and fluid vorticity can induce a variety of novel transport phenomena, including the chiral magnetic effect, chiral vortical effect, etc. Some of them require the environmental violation of parity and thus provide a means to test the possible parity violation in hot strongly interacting matter. We will discuss the underlying mechanism and implications of these anomalous chiral transports in heavy-ion collisions.
New experimental constrains on chiral magnetic effect using charge-dependent azimuthal correlation in pPb and PbPb collisions at the LHC
Authors: Tu Zhoudunming
Published: January 2018

Studies of charge-dependent azimuthal correlations for the same- and oppositesign particle pairs are presented in PbPb collisions at 5 TeV and pPb collisions at 5 and 8.16 TeV, with the CMS experiment at the LHC. The azimuthal correlations are evaluated with respect to the second- and also higher-order event planes, as a function of particle pseudorapidity and transverse momentum, and event multiplicity. By employing an event-shape engineering technique, the dependence of correlations on azimuthal anisotropy flow is investigated. Results presented provide new insights to the origin of observed charge-dependent azimuthal correlations, and have important implications to the search for the chiral magnetic effect in heavy ion collisions.
What can we learn from femtoscopic and angular correlations of identified particles in ALICE?
Authors: Graczykowski Łukasz Kamil
Published: January 2018

Two-particle correlations have proven to be a robust tool which allow the exploration of many physics phenomena present in high-energy particle collisions. In this work, two techniques, namely femtoscopic and angular correlations of identified particles, are discussed the most recent results of both of them obtained from pp and Pb-Pb collisions recorded by the ALICE detector are presented.
Small x Asymptotics of the Quark and Gluon Helicity Distributions
Authors: V. Kovchegov Yuri , Pitonyak Daniel , Sievert Matthew D.
Published: January 2018

We determine the small-x asymptotics of the gluon helicity distribution in a proton at leading order in perturbative QCD at large Nc. To achieve this, we begin by evaluating the dipole gluon helicity TMD at small x. We then construct and solve novel small-x large-Nc evolution equations for the operator related to the dipole gluon helicity TMD. Our main result is the small-x asymptotics for the quark helicity distribution
Are PDFs still consistent with Tevatron data?
Authors: Sullivan Zack
Published: January 2018

As active data taking has moved to the LHC at CERN, more and more LHC data have been included into fits of parton distribution functions. An anomaly has arisen where formerly excellent agreement between theoretical predictions and experiment in single-top-quark production at the Tevatron is no longer quite as good. Is this indicative of a deeper issue?
Recent ATLAS measurements of azimuthal anisotropies in pp and p+Pb collisions
Authors: Trzupek Adam
Published: January 2018

The azimuthal anisotropies of particle yields observed in relativistic heavy-ion collisions are considered as an evidence of the formation on a deconfined Quark-Gluon Plasma produced in these collisions. Interestingly, recent measurements in pp and p+Pb systems from ATLAS and other experiments show similar features as those observed in A+A collisions, indicating the possibility of the production of such a deconfined medium in smaller collision systems. This report presents a summary of the recent ATLAS results on azimuthal anisotropies in pp collisions at 5.02 TeV and 13 TeV, p+Pb collisions at 5.02 TeV and 8.16 TeV as well as in peripheral 2.76 TeV Pb+Pb interactions. It includes measurements of two-particle correlations of charged particles as well as correlations of heavy flavor muons and charged particles in Δϕ and Δη, with a template fitting procedure used to subtract the dijet contributions. Additionally, measurements of cumulants of multi-particle correlations, cn{2-8} are presented. The two-particle correlations and cumulants confirm a presence of collective phenomena in these collision systems, but the results on four-particle cumulants for pp collisions do not demonstrate a similar collective behaviour. However, the cumulant measurements in small collision systems can be biased by non-flow correlations. A novel subevent cumulant method that suppresses the contribution of non-flow effects was proposed recently by ATLAS allowing to measure significant azimuthal anisotropies in both pp and p+Pb collisions.
Vector boson tagged jets and jet substructure
Authors: Vitev Ivan
Published: January 2018

In these proceedings, we report on recent results related to vector boson-tagged jet production in heavy ion collisions and the related modification of jet substructure, such as jet shapes and jet momentum sharing distributions. Z0-tagging and γ-tagging of jets provides new opportunities to study parton shower formation and propagation in the quark-gluon plasma and has been argued to provide tight constrains on the energy loss of reconstructed jets. We present theoretical predictions for isolated photon-tagged and electroweak boson-tagged jet production in Pb+Pb collisions at √sNN = 5.02 TeV at the LHC, addressing the modification of their transverse momentum and transverse momentum imbalance distributions. Comparison to recent ATLAS and CMS experimental measurements is performed that can shed light on the medium-induced radiative corrections and energy dissipation due to collisional processes of predominantly quark-initiated jets. The modification of parton splitting functions in the QGP further implies that the substructure of jets in heavy ion collisions may differ significantly from the corresponding substructure in proton-proton collisions. Two such observables and the implication of tagging on their evaluation is also discussed.
Probing Anomalous Quartic Interactions at the LHC with proton tagging
Authors: Baldenegro Cristian
Published: January 2018

One of the main goals of the Large Hadron Collider is to find signatures of physics Beyond the Standard Model of particle physics. One way to do this is by studying with high precision the interactions of the Standard Model. In this talk, we address the discovery potential of New Physics in the exclusive channel pp → p X p which relies on the general purpose detectors at the Large Hadron Collider and their respective forward proton detector stations, located at about ~ 210 m w.r.t. the interaction point. These reactions are highly sensitive to quartic electroweak gauge interactions. As a proof of concept, we discuss the exclusive diphoton production at high diphoton invariant mass. We quote sensitivities on the anomalous γγγγ coupling for an integrated luminosity of 300 fb1 at the center-of-mass energy of 14 TeV.We also discuss the discovery potential of 3γZ anomalous quartic gauge coupling by measuring the pp → p(γγ → Zγ)p reaction.
Soft diffraction at LHC
Authors: Kašpar Jan
Published: January 2018

This contribution reviews and compares various LHC results on soft diffraction, in particular elastic scattering, total, inelastic and elastic cross-section, single and double diffraction.
Tests of the SIBYLL 2.3 high-energy hadronic interaction model using the KASCADE-Grande muon data
Authors: Arteaga-Velázquez J.C. , Rivera-Rangel D. , Apel W.D. , Bekk K. , Bertaina M. , Blümer J. , Bozdog H. , Brancus I.M. , Cantoni E. , Chiavassa A. , Cossavella F. , Daumiller K. , Souza V. de , Pierro F. Di , Doll P. , Engel R. , Fuhrmann D. , Gherghel-Lascu A. , Gils H.J. , Glasstetter R. , Grupen C. , Haungs A. , Heck D. , Hörandel J.R. , Huege T. , Kampert K.H. , Kang D. , Klages H.O. , Link K. , Łuczak P. , Mathes H.J. , Mayer H.J. , Milke J. , Mitrica B. , Morello C. , Oehlschläger J. , Ostapchenko S. , Pierog T. , Rebel H. , Roth M. , Schieler H. , Schoo S. , Schröder F.G. , Sima O. , Toma G. , Trinchero G.C. , Ulrich H. , Weindl A. , Wochele J. , Zabierowski J.
Published: January 2018

The KASCADE-Grande observatory was a ground-based air shower array dedicated to study the energy and composition of cosmic rays in the energy interval E = 1 PeV –1 EeV. The experiment consisted of different detector systems which allowed the simultaneous measurement of distinct components of air showers (EAS), such as the muon content. In this contribution, we study the total muon number and the lateral density distribution of muons in EAS detected by KASCADE-Grande as a function of the zenith angle and the total number of charged particles. The attenuation length of the muon content of EAS is also measured. The results are compared with the predictions of the SIBYLL 2.3 high-energy hadronic interaction model.
On muon bundles from the Universe
Authors: Kankiewicz P. , Rybczyński M. , Włdarczyk Z. , Wilk G.
Published: January 2018

Recently the CERN ALICE experiment, in its dedicated cosmic ray run, observed muon bundles of very high multiplicities, thereby confirming similar findings from the LEP era at CERN (in the CosmoLEP project). We found significant evidence for anisotropy of arrival directions of the observed high multiplicity muonic bundles. The distribution on celestial sphere and the estimated directionality suggests their possible extragalactic source. We argue that muonic bundles of highest multiplicity are produced by strangelets, hypothetical stable lumps of strange quark matter infiltrating our Universe.
Four Channel Mini Wire Chamber to Study Cosmic Rays
Authors: Felix J. , Rodriguez G. J.
Published: January 2018

Multiwire proportional chamber is a conventional technique to study radiation in general, and cosmic rays in particular. To study cosmic rays, it was planned, designed, constructed, characterized, and tested a four channel mini wire chamber, based on two 3 cm × 3 cm × 0.6 cm Aluminum frames, two 3 cm × 3 cm × 0.6 cm plastic frames, two 3 cm × 3 cm × 0.3 cm Aluminum frames, two electronic planes each with two Tungsten Gold plated 1 mil diameter wires, parallel and 1 cm apart each other at 25 g stretched-each plane was 90° rotated each other in the final assemble- and two Aluminum foil window to define the gas volume; it was operated with Argon 90%-CH4 10% gas mixture at 1 atmosphere and ambient temperature (20°C in the average). It is presented technical details, results on characterization, and preliminary results on cosmic rays detection.
Chiral asymmetry during the EWPT from CP-violating scattering off bubble walls
Authors: Ayala Alejandro , Hernández L. A. , Salinas Jordi
Published: January 2018

We compute a net electric current during a first order EWPT arising from the asymmetric propagation of fermion chiral modes due to a CP-violating interaction with the Higgs. The interaction is quantified in terms of a CP-violating phase in the bubble wall that separate both phases. We comment on the possibility of this current to generate a seed magnetic field and its implications for primordial magnetogenesis in the early Universe.
QGP hydrodynamical study using energy-momentum in-medium deposition by an extended source.
Authors: Maldonado-Gonzalez Julio Cesar , Ayala Alejandro , Dominguez Isabel , Tejeda-Yeomans Maria Elena
Published: January 2018

The quark-gluon plasma (QGP) is created under extreme conditions, such as the ones prevailing in heavy ion collisions. The characterization of the QGP can be done using high-pT probes such as the partons that are created through hard scatterings in the fireball. These fast-moving partons lose energy and momentum along their traveled path through the medium. The parton deposition of energy-momentum creates an in-medium disturbance that can be described using approximations within relativistic hydrodynamics in a defined regime of the QGP evolution. Based on earlier research in this field, we study the use of extended sources that depend on the location of the parton-jet in the initial stages of the QGP evolution. We explore this approach as a way to complement the current numerical landscape of hydrodynamical QGP studies and to eventually generate initial conditions that can be used as input of hydrodynamical numerical simulations.
Performance of BEBE-prototype: A BEam-BEam counter prototype for the MPD-NICA experiment at JINR
Authors: Fernández Cristian Heber Zepeda
Published: January 2018

In this work we show the arrival time resolution for the Beam Monitoring Detector (BMD). We made the study for Au+Au collision at √s = 8 Gev and a smearing of σ = 300 cm. The arrival time resolution we found is Δσ = 57.982 ± 0.509 ps. We show preliminary results of the time resolution for a cell of the BMD.
North Europe power transmission system vulnerability during extreme space weather
Authors: Piccinelli Roberta , Krausmann Elisabeth
Published: January 2018

Space weather driven by solar activity can induce geomagnetic disturbances at the Earth's surface that can affect power transmission systems. Variations in the geomagnetic field result in geomagnetically induced currents that can enter the system through its grounding connections, saturate transformers and lead to system instability and possibly collapse. This study analyzes the impact of extreme space weather on the northern part of the European power transmission grid for different transformer designs to understand its vulnerability in case of an extreme event. The behavior of the system was analyzed in its operational mode during a severe geomagnetic storm, and mitigation measures, like line compensation, were also considered. These measures change the topology of the system, thus varying the path of geomagnetically induced currents and inducing a local imbalance in the voltage stability superimposed on the grid operational flow. Our analysis shows that the North European power transmission system is fairly robust against extreme space weather events. When considering transformers more vulnerable to geomagnetic storms, only few episodes of instability were found in correspondence with an existing voltage instability due to the underlying system load. The presence of mitigation measures limited the areas of the network in which bus voltage instabilities arise with respect to the system in which mitigation measures are absent.
Influence of foam on the stability characteristics of immiscible flow in porous media
Authors: van der Meer J. M. , Farajzadeh R. , Rossen W. R. , Jansen J. D.
Published: January 2018

Accurate field-scale simulations of foam enhanced oil recovery are challenging, due to the sharp transition between gas and foam. Hence, unpredictable numerical and physical behavior is often observed, casting doubt on the validity of the simulation results. In this paper, a thorough stability analysis of the foam model is presented to validate the simulation results. We study the effect of a strongly non-monotonous total mobility function arising from foam models on the stability characteristics of the flow. To this end, we apply the linear stability analysis to nearly discontinuous relative permeability functions and compare the results with those of highly accurate numerical simulations. In addition, we present a qualitative analysis of the effect of different reservoir and fluid properties on the foam fingering behavior. In particular, we consider the effect of heterogeneity of the reservoir, injection rates, and foam quality. Relative permeability functions play an important role in the onset of fingering behavior of the injected fluid. Hence, we can deduce that stability properties are highly dependent on the non-linearity of the foam transition. The foam-water interface is governed by a very small total mobility ratio, implying a stable front. The transition between gas and foam, however, exhibits a huge total mobility ratio, leading to instabilities in the form of viscous fingering. This implies that there is an unstable pattern behind the front. We deduce that instabilities are able to grow behind the front but are later absorbed by the expanding wave. Moreover, the stability analysis, validated by numerical simulations, provides valuable insights about the important scales and wavelengths of the foam model. In this way, we remove the ambiguity regarding the effect of grid resolution on the convergence of the solutions. This insight forms an essential step toward the design of a suitable computational solver that captures all the appropriate scales, while retaining computational efficiency.
Electrically induced, non-volatile, metal insulator transition in a ferroelectric-controlled MoS2 transistor
Authors: Lu Zhongyuan , Serrao Claudy , Khan Asif I. , Clarkson James D. , Wong Justin C. , Ramesh Ramamoorthy , Salahuddin Sayeef
Published: January 2018

We demonstrate an electrically induced, non-volatile, metal-insulator phase transition in a MoS2 transistor. A ferroelectric capacitor made of single crystalline, epitaxially grown PbZr0.2Ti0.8O3 was connected to the gate of a field effect thin film MoS2 transistor. When a voltage is applied to this ferroelectric capacitor, a clear transition from an insulator to a metal and vice versa is observed in the transistor. Importantly, when the biased voltage is turned off, the remnant polarization in the ferroelectric can keep the MoS2 in its original phase, thereby providing a non-volatile state. Thus, a metallic or insulating phase can be written, erased, or retained simply by biasing the externally connected ferroelectric capacitor.
Surface structure of MgO underlayer with Ti diffusion for (002) oriented L1 FePt-based heat assisted magnetic recording media
Authors: Hinata Sintaro , Jo Shin , Saito Shin
Published: January 2018

Surface morphology of the MgO layer and magnetic properties of FePt-C layer deposited on the MgO were investigated for the FePt-based heat assisted magnetic recording media. Stacking structure of the underlayer for the FePt-C layer was MgO (0-5 nm)/Cr80Mn20 (0-30 nm)/Cr50Ti50 (0-50 nm)/glass sub.. Surface observation result for the MgO film by using an atomic force microscope revealed the existence of nodules with a height of about 2 nm and a network-like convex structure with a height difference of about sub nm (boundary wall, BW) on the MgO crystal grain boundary. Density of the nodules largely depends on the surface roughness of the CrTi layer, RaCrTi and it is suppressed from 10 to 2/0.5 μm2 by reducing RaCrTi from 420 to 260 pm. Height of the BW depends on thickness of the MgO layer, tMgO and it can be suppressed by reducing tMgO to less than 4 nm. From the cross-sectional energy dispersive x-ray mapping, it is clarified that the BW is formed by atomic diffusion of Ti atoms from CrTi layer due to the substrate heating process, and a compound consists of Mg, Ti and O atoms. This BW can be used as a template to magnetically isolate the FePt column in the FePt-based granular film, such as FePt-SiO2, if the size of the BW is reduced to less than 10 nm. M-H loop of the FePt-C granular film deposited on the underlayer showed that the nodule and BW induce oxidation of the FePt grains, and reduction of intergranular exchange coupling.
Cryogenic positioning and alignment with micrometer precision in a magnetic resonance force microscope
Authors: Isaac Corinne E. , Curley Elizabeth A. , Nasr Paméla T. , Nguyen Hoang L. , Marohn John A.
Published: January 2018

Aligning a microcantilever to an area of interest on a sample is a critical step in many scanning probe microscopy experiments, particularly those carried out on devices and rare, precious samples. We report a series of protocols that rapidly and reproducibly align a high-compliance microcantilever to a <10 μm sample feature under high vacuum and at cryogenic temperatures. The first set of protocols, applicable to a cantilever oscillating parallel to the sample surface, involve monitoring the cantilever resonance frequency while laterally scanning the tip to map the sample substrate through electrostatic interactions of the substrate with the cantilever. We demonstrate that when operating a cantilever a few micrometers from the sample surface, large shifts in the cantilever resonance frequency are present near the edges of a voltage-biased sample electrode. Surprisingly, these “edge-finder” frequency shifts are retained when the electrode is coated with a polymer film and a ∼10 nm thick metallic ground plane. The second series of methods, applicable to any scanning probe microscopy experiment, integrate a single-optical fiber to image line scans of the sample surface. The microscope modifications required for these methods are straightforward to implement, provide reliable micrometer-scale positioning, and decrease the experimental setup time from days to hours in a vacuum, cryogenic magnetic resonance force microscope.
High pressure luminescence of Nd3+ in YAlO3 perovskite nanocrystals: A crystal-field analysis
Authors: Hernández-Rodríguez Miguel A. , Muñoz-Santiuste Juan E. , Lavín Víctor , Lozano-Gorrín Antonio D. , Rodríguez-Hernández Plácida , Muñoz Alfonso , Venkatramu Vemula , Martín Inocencio R. , Rodríguez-Mendoza Ulises R.
Published: January 2018

Pressure-induced energy blue- and red-shifts of the 4F3/2 → 4I9/2,11/2 near-infrared emission lines of Nd3+ ions in YAlO3 perovskite nano-particles have been measured from ambient conditions up to 29 GPa. Different positive and negative linear pressure coefficients have been calibrated for the emission lines and related to pressure-induced changes in the interactions between those Nd3+ ions and their twelve oxygen ligands at the yttrium site. Potentiality of the simple overlap model, combined with ab initio structural calculations, in the description of the effects of these interactions on the energy levels and luminescence properties of the optically active Nd3+ ion is emphasized. Simulations show how the energies of the 4f3 ground configuration and the barycenters of the multiplets increase with pressure, whereas the Coulomb interaction between f-electrons decreases and the crystal-field strength increases. All these effects combined explain the wavelength blue-shifts of some near-infrared emission lines of Nd3+ ions. Large pressure rates of various emission lines suggest that a YAlO3 perovskite nano-crystal can be a potential candidate for near-infrared optical pressure sensors.
Multispectral and polarimetric photodetection using a plasmonic metasurface
Authors: Pelzman Charles , Cho Sang-Yeon
Published: January 2018

We present a metasurface-integrated Si 2-D CMOS sensor array for multispectral and polarimetric photodetection applications. The demonstrated sensor is based on the polarization selective extraordinary optical transmission from periodic subwavelength nanostructures, acting as artificial atoms, known as meta-atoms. The meta-atoms were created by patterning periodic rectangular apertures that support optical resonance at the designed spectral bands. By spatially separating meta-atom clusters with different lattice constants and orientations, the demonstrated metasurface can convert the polarization and spectral information of an optical input into a 2-D intensity pattern. As a proof-of-concept experiment, we measured the linear components of the Stokes parameters directly from captured images using a CMOS camera at four spectral bands. Compared to existing multispectral polarimetric sensors, the demonstrated metasurface-integrated CMOS system is compact and does not require any moving components, offering great potential for advanced photodetection applications.
A wideband ultrasonic energy harvester using 1-3 piezoelectric composites with non-uniform thickness
Authors: Sun Yingqi , Gao Xuemei , Wang Hua , Chen Ziguang , Yang Zengtao
Published: January 2018

This paper reports a wideband ultrasonic energy harvester using 1–3 piezoelectric composites with non-uniform thickness. The harvester can be regarded as composed of parallel-connected oscillator arrays with a gradually varying thickness. The operating bandwidth of the harvester is broadened by the overlapping frequency spectra of the oscillator arrays. The design, modeling, and performance of the harvester are presented. The impedance and the output voltage are analyzed and validated by the experiments. Compared with the harvester with the uniform thickness, the one with the gradually varying thickness can scavenge the ultrasonic energy in a wider range of frequencies. The operating bandwidth of the harvester strongly depends on its thickness variation.
Causality analysis of leading singular value decomposition modes identifies rotor as the dominant driving normal mode in fibrillation
Authors: Biton Yaacov , Rabinovitch Avinoam , Braunstein Doron , Aviram Ira , Campbell Katherine , Mironov Sergey , Herron Todd , Jalife José , Berenfeld Omer
Published: January 2018

Cardiac fibrillation is a major clinical and societal burden. Rotors may drive fibrillation in many cases, but their role and patterns are often masked by complex propagation. We used Singular Value Decomposition (SVD), which ranks patterns of activation hierarchically, together with Wiener-Granger causality analysis (WGCA), which analyses direction of information among observations, to investigate the role of rotors in cardiac fibrillation. We hypothesized that combining SVD analysis with WGCA should reveal whether rotor activity is the dominant driving force of fibrillation even in cases of high complexity. Optical mapping experiments were conducted in neonatal rat cardiomyocyte monolayers (diameter, 35 mm), which were genetically modified to overexpress the delayed rectifier K+ channel IKr only in one half of the monolayer. Such monolayers have been shown previously to sustain fast rotors confined to the IKr overexpressing half and driving fibrillatory-like activity in the other half. SVD analysis of the optical mapping movies revealed a hierarchical pattern in which the primary modes corresponded to rotor activity in the IKr overexpressing region and the secondary modes corresponded to fibrillatory activity elsewhere. We then applied WGCA to evaluate the directionality of influence between modes in the entire monolayer using clear and noisy movies of activity. We demonstrated that the rotor modes influence the secondary fibrillatory modes, but influence was detected also in the opposite direction. To more specifically delineate the role of the rotor in fibrillation, we decomposed separately the respective SVD modes of the rotor and fibrillatory domains. In this case, WGCA yielded more information from the rotor to the fibrillatory domains than in the opposite direction. In conclusion, SVD analysis reveals that rotors can be the dominant modes of an experimental model of fibrillation. Wiener-Granger causality on modes of the rotor domains confirms their preferential driving influence on fibrillatory modes.
MYCN
-amplified neuroblastoma maintains an aggressive and undifferentiated phenotype by deregulation of estrogen and NGF signaling
Authors: Dzieran Johanna , Rodriguez Garcia Aida , Westermark Ulrica Kristina , Henley Aine Brigette , Eyre Sánchez Elena , Träger Catarina , Johansson Henrik Johan , Lehtiö Janne , Arsenian-Henriksson Marie
Published: January 2018

Significance

High-risk neuroblastoma (NB), a cancer of the sympathetic nervous system, is challenging to treat.
MYCN
is frequently amplified in high-risk NB and is linked to an undifferentiated phenotype and poor prognosis. Estrogen and nerve growth factor (NGF) are inducers of neural differentiation, a process associated with a favorable disease. We show that MYCN suppresses estrogen receptor alpha (ERα) and thereby NGF signaling and neural differentiation. ERα overexpression is sufficient to interfere with different tumorigenic processes and tumor growth. In patients with NB,
ERα
expression correlates with several clinical markers for good prognosis. Importantly, not only ERα but also the majority of other nuclear hormone receptors are linked to favorable NB, suggesting a potential prognostic and therapeutic value for these proteins.