bluuebunny/crossref_metadata_2025 huggingface dataset:
Abnormally Low or High Ankle-Brachial Index Is Associated With the Development of Diabetic Retinopathy in Type 2 Diabetes Mellitus
Authors: Lee Mei-Yueh , Hsiao Pi-Jung , Huang Jiun-Chi , Hsu Wei-Hao , Chen Szu-Chia , Chang Jer-Ming , Shin Shyi–Jang
Published: January 2018

Although some studies have reported an association between peripheral artery disease (PAD) and diabetic retinopathy (DR) in patients with diabetes, whether or not a causal relationship exists is unknown. The aim of this study was to investigate whether PAD, as indicated by an abnormally low or high ankle-brachial index (ABI), is associated with the development of DR in patients with type 2 diabetes mellitus (DM) without DR. We enrolled 414 (221 men and 193 women) patients with type 2 DM who underwent ABI measurements at our outpatient clinic. PAD was defined as an abnormally low (<0.9) or high (≥1.3) ABI in either leg, and DR was defined as being non-proliferative or proliferative. Of the enrolled patients, 69 (16.7%) had an ABI <0.9 or ≥1.3. The median follow-up period was 23 (15–40) months, during which 74 (17.9%) patients developed DR. In multivariate analysis, an ABI <0.9 or ≥1.3 was independently associated with the development of DR (vs. ABI ≥0.9 to <1.3; hazard ratio, 2.186; 95% confidence interval, 1.261 to 3.789; p = 0.005). An abnormal ABI was associated with the development of DR in our patients with type 2 DM without DR.
Slower Time estimation in Post-Traumatic Stress Disorder
Authors: Vicario Carmelo M. , Felmingham Kim L.
Published: January 2018

Cognitive deficits in Posttraumatic Stress Disorder (PTSD) and dissociative symptoms suggest there may be an underlying and persistent problem with temporal processing in PTSD, but this question has not been systematically examined. We investigated the ability of a group of PTSD participants in estimating the duration of supra-second visual stimuli relative to healthy controls. The data of 59 participants with PTSD and 62 healthy controls, collected from the BRID database, have been examined. Overall, our results indicate that PTSD patients overestimate the duration of the displayed stimuli. Moreover, we found that PTSD are more variable in the time estimation compared to the control group. Finally, we found evidence that working memory and attention impairments were associated with time overestimation in PTSD. The finding of time overestimation in PTSD accords with previous reports of time overestimation during stressful experiences associated with fear and arousal, but extends findings to suggest it remains in chronic PTSD populations processing non-emotional stimuli. The evidence of time overestimation in PTSD suggests the potential relevance of this factor as a cognitive marker in assessing the neuropsychological profile of this clinical population.
Rapid Thermal Processing to Enhance Steel Toughness
Authors: Judge V. K. , Speer J. G. , Clarke K. D. , Findley K. O. , Clarke A. J.
Published: January 2018

Quenching and Tempering (Q&T) has been utilized for decades to alter steel mechanical properties, particularly strength and toughness. While tempering typically increases toughness, a well-established phenomenon called tempered martensite embrittlement (TME) is known to occur during conventional Q&T. Here we show that short-time, rapid tempering can overcome TME to produce unprecedented property combinations that cannot be attained by conventional Q&T. Toughness is enhanced over 43% at a strength level of 1.7 GPa and strength is improved over 0.5 GPa at an impact toughness of 30 J. We also show that hardness and the tempering parameter (TP), developed by Holloman and Jaffe in 1945 and ubiquitous within the field, is insufficient for characterizing measured strengths, toughnesses, and microstructural conditions after rapid processing. Rapid tempering by energy-saving manufacturing processes like induction heating creates the opportunity for new Q&T steels for energy, defense, and transportation applications.
Phases and rates of iron and magnetism changes during paddy soil development on calcareous marine sediment and acid Quaternary red-clay
Authors: Huang Laiming , Jia Xiaoxu , Shao Ming’an , Chen Liumei , Han Guangzhong , Zhang Ganlin
Published: January 2018

Dynamic changes in Fe oxides and magnetic properties during natural pedogenesis are well documented, but variations and controls of Fe and magnetism changes during anthropedogenesis of paddy soils strongly affected by human activities remain poorly understood. We investigated temporal changes in different Fe pools and magnetic parameters in soil profiles from two contrasting paddy soil chronosequences developed on calcareous marine sediment and acid Quaternary red clay in Southern China to understand the directions, phases and rates of Fe and magnetism evolution in Anthrosols. Results showed that paddy soil evolution under the influence of artificial submergence and drainage caused changes in soil moisture regimes and redox conditions with both time and depth that controlled Fe transport and redistribution, leading to increasing profile differentiation of Fe oxides, rapid decrease of magnetic parameters, and formation of diagnostic horizons and features, irrespective of the different parent materials. However, the initial parent material characteristics (pH, Fe content and composition, weathering degree and landscape positions) exerted a strong influence on the rates and trajectories of Fe oxides evolution as well as the phases and rates of magnetism changes. This influence diminished with time as prolonged rice cultivation drove paddy soil evolving to common pedogenic features.
Expression of cry2Ah1 and two domain II mutants in transgenic tobacco confers high resistance to susceptible and Cry1Ac-resistant cotton bollworm
Authors: Li Shengyan , Wang Zeyu , Zhou Yiyao , Li Changhui , Wang Guiping , Wang Hai , Zhang Jie , Liang Gemei , Lang Zhihong
Published: January 2018

To improve the novel Bacillus thuringiensis insecticidal gene cry2Ah1 toxicity, two mutants cry2Ah1-vp (V354VP) and cry2Ah1-sp (V354SP) were performed. SWISS-MODEL analysis showed two mutants had a longer loop located between β-4 and β-5 of domain II, resulting in higher binding affinity with brush border membrane vesicles (BBMV) of Helicoverpa armigera comparing with Cry2Ah1. The cry2Ah1, cry2Ah1-vp, and cry2Ah1-sp were optimized codon usage according to plant codon bias, and named mcry2Ah1, mcry2Ah1-vp, and mcry2Ah1-sp. They were transformed into tobacco via Agrobacterium-mediated transformation and a total of 4, 8, and 24 transgenic tobacco plants were obtained, respectively. The molecular detection showed the exogenous gene was integrated into tobacco genome, and successfully expressed at the transcript and translation levels. Cry2Ah1 protein in transgenic tobacco plants varied from 4.41 to 40.28 μg g−1 fresh weight. Insect bioassays indicated that all transgenic tobacco plants were highly toxic to both susceptible and Cry1Ac-resistant cotton bollworm larvae, and the insect resistance efficiency to Cry1Ac-resistant cotton bollworm was highest in mcry2Ah1-sp transgenic tobacco plants. The results demonstrated that cry2Ah1 was a useful Bt insecticidal gene to susceptible and Cry1Ac-resistant cotton bollworm and had potential application for insect biocontrol and as a candidate for pyramid strategy in Bt crops.
The value of narrow band imaging in diagnosis of head and neck cancer: a meta-analysis
Authors: Zhou Hui , Zhang Jing , Guo Linghong , Nie Ji , Zhu Chenjing , Ma Xuelei
Published: January 2018

Head and neck cancer is difficult to diagnose early. We aimed to estimate the diagnosis value of narrow band imaging(NBI) in head and neck cancers. We identified relevant studies through a search of PubMed, Embase and the Cochrane Library. We used a random effect model. Subgroup analysis and meta-regression analysis were performed to estimate the factors which may influence the sensitivity and specificity of the NBI. We included 25 studies with total 6187 lesions. The pooled sensitivity, specificity, positive likelihood rate, negative likelihood rate and diagnostic odds ratios of NBI were 88.5%, 95.6%, 12.33, 0.11 and 121.26, respectively. The overall area under the curve of SROC was 96.94%. The location, type of assessment, type of endoscope system and high definition were not significant sources of heterogeneity (P > 0.05). However, magnification may be related to the source of heterogeneity (P = 0.0065). Therefore, NBI may be a promising endoscopic tool in the diagnosis of head and neck cancer.
Rhodium(iii)-catalyzed chemodivergent annulations between N-methoxybenzamides and sulfoxonium ylides via C–H activation
Authors: Xu Youwei , Zheng Guangfan , Yang Xifa , Li Xingwei
Published: January 2018

Rhodium-catalyzed and acid-controlled chemodivergent annulations between N-methoxybenzamides and sulfoxonium ylides have been realized.
Dehydrogenation of dimethylamine-borane mediated by Group 1 pincer complexes
Authors: Nolla-Saltiel Roberto , Geer Ana M. , Lewis William , Blake Alexander J. , Kays Deborah L.
Published: January 2018

Alkali metal carbazolido complexes are precatalysts for the dehydrogenation of Me2NH·BH3, where the cation plays a vital role in the reaction outcome.
Cation-responsive turn-on fluorescence and absence of heavy atom effects of pyridyl-substituted triarylmethyl radicals
Authors: Hattori Yohei , Kimura Shun , Kusamoto Tetsuro , Maeda Hiroaki , Nishihara Hiroshi
Published: January 2018

Pyridyl-substituted triarylmethyl radicals showed cation-responsive turn-on fluorescence and did not suffer from quenching by internal and external heavy atom effects.
Catalytic aziridination with alcoholic substrates via a chromium tetracarbene catalyst
Authors: Keller C. Luke , Kern Jesse L. , Terry Bradley D. , Roy Sharani , Jenkins David M.
Published: January 2018

The first examples of aziridination catalysis with a chromium complex are communicated.
Counting DNA molecules with visual segment-based readouts in minutes
Authors: Wang Rui , Zhang Fang , Qian Cheng , Wu Cui , Ye Zunzhong , Wang Liu , Qian Wenjuan , Ping Jianfeng , Wu Jian , Ying Yibin
Published: January 2018

An ultrafast and extremely simple approach was proposed to count the number of DNA molecules without any microfluidic-based device. By directly counting the number of amplicon clusters in a capillary, the absolute amount of DNA molecules could be easily determined.
The deformation of hydrogel microspheres at the air/water interface
Authors: Minato Haruka , Murai Masaki , Watanabe Takumi , Matsui Shusuke , Takizawa Masaya , Kureha Takuma , Suzuki Daisuke
Published: January 2018

The deformation of soft hydrogel microspheres (microgels) adsorbed at the air/water interface was investigated for the first time using large poly(N-isopropyl acrylamide)-based microgels synthesized by a modified aqueous precipitation polymerization method.
Photocatalytic partial oxidation of limonene to 1,2 limonene oxide
Authors: Ciriminna Rosaria , Parrino Francesco , De Pasquale Claudio , Palmisano Leonardo , Pagliaro Mario
Published: January 2018

The silylation of crystalline TiO2 P25, commonly used for photocatalytic degradation of pollutants, results in an exceptionally selective catalyst for the aerobic limonene epoxidation to 1,2-limonene oxide under solar light irradiation.
Correction: A self-assessed photosensitizer: inducing and dual-modal phosphorescence imaging of mitochondria oxidative stress
Authors: Yang Jing , Cao Qian , Hao Liang , Yang Gang-Gang , Hu Wei-Liang , Ji Liang-Nian , Mao Zong-Wan
Published: January 2018

Correction for ‘A self-assessed photosensitizer: inducing and dual-modal phosphorescence imaging of mitochondria oxidative stress’ by Jing Yang et al., Chem. Commun., 2018, DOI: 10.1039/c7cc07797a.
Nanoscale crystallization and thermal behaviour of 1,2,4,5-tetrabromobenzene
Authors: Khalil Abdullah , Hu Chunhua Tony , Naumov Panče
Published: January 2018

Nanocrystals of the thermosalient compound 1,2,4,5-tetrabromobenzene are indefinitely stable in the metastable phase from cryogenic temperatures to 80 °C and sublime upon further heating.
Polymorphism and solvates of 1-acetyl-3-(phenyl)-5-(1-pyrenyl)pyrazoline: the structures, thermal and optical-physical properties
Authors: Feng Qi , Wang Jiali , Ding Shiyuan , Chen Yang , Diao Guowang , Zhu Pingting
Published: January 2018

Single crystals of the β polymorph, formic acid and propanoic acid solvates of the title compound (abbreviation APPP) have been obtained.
Evolution of the topological properties of two-dimensional group IVA materials and device design
Authors: Yu Xiang-Long , Wu Jiansheng
Published: January 2018

Two-dimensional group IVA materials (graphene, silicene, germanene, stanene, and plumbene) are promising candidates for realization of the quantum spin Hall effect and for future device applications.
Mechanical stability of a nanotube from monolayer black phosphorus with the [110] direction as the tube's circumference or generatrix
Authors: Zhao Zhiqiang , Yin Hang , Cai Kun , Zhou Wanqi
Published: January 2018

BPNTs based on the [110] direction in monolayer BP can exhibit novel mechanical properties and potential applications.
Adsorption equilibrium of nitrogen dioxide in porous materials
Authors: Matito-Martos I. , Rahbari A. , Martin-Calvo A. , Dubbeldam D. , Vlugt T. J. H. , Calero S.
Published: January 2018

The effect of confinement on the equilibrium reactive system containing nitrogen dioxide and dinitrogen tetroxide is studied by molecular simulation and the reactive Monte Carlo (RxMC) approach.
Theoretical evidence for the direct 3MLCT-HS deactivation in the light-induced spin crossover of Fe(ii)–polypyridyl complexes
Authors: Sousa Carmen , Llunell Miquel , Domingo Alex , de Graaf Coen
Published: January 2018

Second-order spin–orbit coupling and structural distortions activate the 3MLCT–5T2 deactivation in Fe(ii)–polypyridyl complexes.
Hierarchical formation of Fe-9eG supramolecular networks via flexible coordination bonds
Authors: Zhang Chi , Xie Lei , Ding Yuanqi , Yuan Chunxue , Xu Wei
Published: January 2018

Using STM imaging/manipulations and DFT calculations, we display the hierarchical formation of supramolecular networks on Au(111) via flexible coordination bonds.
Thermal stability of trihexyl(tetradecyl)phosphonium chloride
Authors: Deferm Clio , Van den Bossche Arne , Luyten Jan , Oosterhof Harald , Fransaer Jan , Binnemans Koen
Published: January 2018

The thermal stability of the ionic liquid Cyphos IL 101 was investigated under various experimental conditions for possible high-temperature applications.
Correction: Direct characterization of graphene doping state by in situ photoemission spectroscopy with Ar gas cluster ion beam sputtering
Authors: Yun Dong-Jin , Kim Seyun , Jung Changhoon , Lee Chang-Seok , Sohn Hiesang , Won Jung Yeon , Kim Yong Su , Chung JaeGwan , Heo Sung , Kim Seong Heon , Seol Minsu , Shin Weon Ho
Published: January 2018

Correction for ‘Direct characterization of graphene doping state by in situ photoemission spectroscopy with Ar gas cluster ion beam sputtering’ by Dong-Jin Yun et al., Phys. Chem. Chem. Phys., 2018, 20, 615–622.
Synthesis and applications to catalysis of novel cyclopentadienone iron tricarbonyl complexes
Authors: Del Grosso Alessandro , Chamberlain Alexander E. , Clarkson Guy J. , Wills Martin
Published: January 2018

New approaches to enantiomerically-pure cyclopentadienone iron complexes, and their applications to ketone reductions reactions, are described.
Synthesis and comparison of nickel, palladium, and platinum bis(N-heterocyclic carbene) pincer complexes for electrocatalytic CO2 reduction
Authors: Therrien J. A. , Wolf M. O. , Patrick B. O.
Published: January 2018

Nickel, palladium, and platinum bis(N-heterocyclic carbene) pincer complexes are synthesized, surveyed, and compared for electrocatalytic reduction of carbon dioxide.
Superstructure Ta2O5 mesocrystals derived from (NH4)2Ta2O3F6 mesocrystals with efficient photocatalytic activity
Authors: Yu Xin , Li Wei , Huang Jian , Li Zhonghua , Liu Jiawen , Hu PingAn
Published: January 2018

Superstructured mesocrystalline Ta2O5 nanosheets were successfully prepared from mesocrystalline (NH4)2Ta2O3F6 nanorods by the annealing method.
Enzymatic delignification and hexenuronic acid removal in cellulosic papermaking pulp using a haloperoxidase
Authors: Waschulin Valentin , Loureiro Pedro E. G. , Herold-Majumdar Owik M. , Felby Claus , Lund Henrik
Published: January 2018

A novel approach for lignin and hexenuronic acid removal from cellulosic pulp based on the combination of a vanadium haloperoxidase and a tertiary amine co-catalyst.
Dynamics of 3D carcinoma cell invasion into aligned collagen
Authors: Ray Arja , Morford Rachel K. , Ghaderi Nima , Odde David J. , Provenzano Paolo. P.
Published: January 2018

We present a novel platform to quantify spatiotemporal dynamics of cell behavior at and beyond the invasive front and demonstrate that contact inhibition and contact guidance orchestrate cancer cell invasion into anisotropic extracellular matrix.
Impact of air, laser pulse width and fluence on U–Pb dating of zircons by LA-ICPMS
Authors: Thompson Jay M. , Meffre Sebastien , Danyushevsky Leonid
Published: January 2018

The accuracy of zircon U–Pb dating by LA-ICPMS is limited by matrix effects related to differences in U–Pb fractionation between an unknown and the calibration standard.
The P-type ATPase inhibiting potential of polyoxotungstates
Authors: Gumerova Nadiia , Krivosudský Lukáš , Fraqueza Gil , Breibeck Joscha , Al-Sayed Emir , Tanuhadi Elias , Bijelic Aleksandar , Fuentes Juan , Aureliano Manuel , Rompel Annette
Published: January 2018

Polyoxometalates (POMs) are transition metal complexes that exhibit a broad diversity of structures and properties rendering them promising for biological purposes.
Synthesis of highly active rGO-supported mono and bi-metallic nanocomposites as catalysts for chemoselective hydrogenation of α,β-unsaturated ketone to alcohol
Authors: Sivaranjan K. , Padmaraj O. , Santhanalakshmi J.
Published: January 2018

Schematic of the complete mechanism for chemoselective hydrogenation process of α,β-unsaturated ketone to alcohol through the newly developed rGO-supported mono (Au/rGO and Pd/rGO) and bi-metallic (Cu–Au/rGO and Cu–Pd/rGO) nanocomposite catalysts.
Synthesis and characterization of [Ru(NCNHCO)(bpy)L]+ complexes and their reactivity towards water oxidation
Authors: Cai Fanglin , Su Wei , Younus Hussein A. , Zhou Kui , Chen Cheng , Chaemchuen Somboon , Verpoort Francis
Published: January 2018

The role of charged axial ligands in tuning the reactivity and stability of Ru WOCs is well-known, less is explored when axial ligands are neutral molecules.
Diastereo- and enantioselective nitro-Mannich reaction of isatin-derived N-Boc ketimines catalyzed by chiral phase-transfer catalysts
Authors: Liu Yuxin , Wang Jingdong , Wei Zhonglin , Cao Jungang , Liang Dapeng , Lin Yingjie , Duan Haifeng
Published: January 2018

A series of 3-substituted 3-amino-oxindoles were constructed in excellent yields (96–99%) with high enantioselectivities (up to 95% ee) and diastereoselectivities (up to 95 : 5 dr) catalyzed by Cinchona alkaloid-derived phase-transfer catalysts.
The unexpected racemization and hydrogen–deuterium exchange of the hydrogen at the α-carbon of proline analogs containing the 5-azoniaspiro[4.4]nonyl-group
Authors: Setner B. , Wierzbicka M. , Jerzykiewicz L. , Lisowski M. , Szewczuk Z.
Published: January 2018

Herein, we present an unexpected racemization and the hydrogen–deuterium exchange (HDX) at the α-C atom of the proline derivative under basic aqueous conditions (1% water solution of triethylamine).
Pressure quenching: a new route for the synthesis of black phosphorus
Authors: Sun Qiushi , Zhao Xudong , Feng Yi , Wu Yunpeng , Zhang Ziqing , Zhang Xinyang , Wang Xiaofeng , Feng Shouhua , Liu Xiaoyang
Published: January 2018

The phase transition was observed between red phosphorus and black phosphorus under 0.5 GPa by using pressure quenching method.
Ordered mesoporous WO2.83: selective reduction synthesis, exceptional localized surface plasmon resonance and enhanced hydrogen evolution reaction activity
Authors: Cheng Hefeng , Klapproth Miriam , Sagaltchik Anton , Li Shuang , Thomas Arne
Published: January 2018

A mesostructured sub-stoichiometric WO2.83 was prepared by oxygen vacancy engineering strategy, which displays exceptional plasmon resonance and enhanced hydrogen evolution reaction relative to pristine mesoporous WO3.
Preparation of novel low-κ polyimide fibers with simultaneously excellent mechanical properties, UV-resistance and surface activity using chemically bonded hyperbranched polysiloxane
Authors: Yang Cairan , Dong Jie , Fang Yuting , Ma Lixiang , Zhao Xin , Zhang Qinghua
Published: January 2018

High-strength and high-modulus fibers with low dielectric constants (low-κ) play an important role in newly-developed wave-transparent composites.
Facile preparation of carbon-dot-supported nanoflowers for efficient photothermal therapy of cancer cells
Authors: Hou Changshun , Chen Shiqing , Wang Mengqi
Published: January 2018

Novel C-dots@Au composites have been developed by one-step preparation for efficient photothermal therapy of cancer cells.
LncRNA DANCR functions as a competing endogenous RNA to regulate RAB1A expression by sponging miR-634 in glioma
Authors: Xu Dawei , Yu Jian , Gao Guojun , Lu Guangjian , Zhang Yi , Ma Pengju
Published: January 2018

Long noncoding RNA (lncRNA) differentiation antagonizing nonprotein coding RNA (DANCR) plays important regulatory roles in many solid tumors. However, the effect of DANCR in glioma progression and underlying molecular mechanisms were not entirely explored. In the present study, we determined the expression of DANCR in glioma tissues and cell lines using qRT-PCR and further defined the biological functions. Furthermore, we used luciferase reporter assay, Western blot, and RNA immunoprecipitation (RIP) to explore the underlying mechanism. Our results showed that DANCR was significantly up-regulated in glioma tissues and cell lines (U251, U118, LN229, and U87MG). High DANCR expression was correlated with advanced tumor grade. Inhibition of DANCR suppressed the glioma cells proliferation and induced cells arrested in the G0/G1 phase. In addition, we verified that DANCR could directly interact with miR-634 in glioma cells and this interaction resulted in the inhibition of downstream of RAB1A expression. The present study demonstrated that DANCR/miR-634/RAB1A axis plays crucial roles in the progression of glioma, and DANCR might potentially serve as a therapeutic target for the treatment of glioma patients.
Author's Rebuttal to Smits et al. (2018), “Comment on ‘Sensitivity of the Speech Intelligibility Index to the Assumed Dynamic Range’ by Jin et al. (2017)”
Authors: Jin In-Ki , Kates James M. , Arehart Kathryn H.
Published: January 2018

Purpose

The purpose of this letter is to refute the comments written by Smits, Goverts, and Versfeld (2018).

Method

Refutations to each issue including the fixed mathematical relationship between dynamic range (DR) and a fitting constant (
Q
value), deviating results for small DRs, and determination of Speech Intelligibility Index (SII) model parameters are described.

Results

Although Smits et al. (2018) correctly identified several issues, those comments do not diminish the results of the original article (Jin, Kates, & Arehart, 2017) in providing new insights for the SII.

Conclusions

Jin et al. (2017) clearly provided the impact of languages and DR on the SII, which was the main result of the study.
Fast calculation method for rectifier matrix model and its application in optimised control of SAPF for network‐wide harmonic suppression
Authors: Zhai Hao , Zhuo Fang , Yi Hao , Wang Zhenxiong , Shi Shuhuai , Wang Feng
Published: January 2018

The conventional control strategies of shunt active power filter (SAPF) normally focus on the compensation for local non‐linear loads, which may become uneconomical with a number of distributed non‐linear loads. For an optimised network‐wide harmonic suppression method, harmonic power flow calculation is the basis, and non‐linear load modelling is the key which affects the accuracy and efficiency. First, this study discussed an accurate, but complicated non‐linear load model, the coupled admittance matrix model for a typical harmonic source, phase‐controlled rectifier, in detail, and proposed a fast calculation method which can simplify the calculation process evidently and explain the variation rules of model parameters clearly. Second, the main harmonic coupling characteristics of the rectifiers are analysed based on the calculation method, thus the rectifier matrix model is simplified and then an impedance‐based network harmonic model for networks with distributed rectifiers is established. Finally, based on the network model, a promising control strategy of SAPF for network‐wide harmonic suppression is presented, by which network parameters are acquired by online impedance measurement technique and good compensation performance is assured by the proposed network model. Experimental results and simulations are provided to validate the effectiveness of the proposed methods.
Improved SSIM IQA of contrast distortion based on the contrast sensitivity characteristics of HVS
Authors: Yao Juncai , Liu Guizhong
Published: January 2018

Currently, the structural similarity index metric (SSIM) is recognised generally and applied widely in image quality assessment (IQA). However, using SSIM to evaluate contrast‐distorted images from TID2013 and CSIQ databases is low effective. In this study, the authors improve SSIM for contrast‐distorted images by combining it with the contrast sensitivity characteristics of human visual system (HVS). In the improved method, first, they combine the visual characteristics to propose a model that HVS perceives the real image. Then, this model is used to eliminate the visual redundancy of real images. Afterwards, the perceived images are evaluated using SSIM. Furthermore, 241 contrast‐distorted images from TID2013 and CSIQ databases were used in experiments. The results have shown that in comparison with SSIM scores, the scores obtained by the improved SSIM are more consistent with the subjective assessment scores. Moreover, the Pearson linear correlation coefficient and Spearman rank order correlation coefficient between subjective and objective scores are averagely improved by 12.83 and 22.78%, respectively. In addition, the assessment accuracy of the improved SSIM is better than that of five commonly used IQA metrics. Also, it has an excellent generalisation performance. These results show that the assessment performance of the improved SSIM is effectively enhanced.
Four‐port diplexer for high Tx/Rx isolation for integrated transceivers
Authors: Konpang Jessada , Sandhu Muhammad , Somjit Nutapong , Hunter Ian C.
Published: January 2018

A four‐port diplexer consisting of two back‐to‐back three‐port diplexers combined with a 180° phase shifter in one branch is presented. The technique achieves high Tx/Rx isolation with relatively low degree filters. Two experimental diplexers are demonstrated, one with equal Q resonators in all filters and the other with dissimilar Q factors, enabling miniaturisation and cost reduction. Measured results of Tx/Rx diplexer devices at 2.13/1.73 GHz are presented and 40 dB Tx/Rx isolation is achieved with only second‐order filters.
Blind adaptive channel mismatch equalisation method for GNSS antenna arrays
Authors: Lu Zukun , Chen Huaming , Chen Feiqiang , Nie Junwei , Ou Gang
Published: January 2018

A blind adaptive channel mismatch equalisation method for global navigation satellite system (GNSS) antenna arrays is proposed. The anti‐jamming performance of the antenna arrays is limited by the channel mismatch that is a relative characteristic of each radio frequency channel but not an absolute non‐ideal characteristic. To pre‐process the received data in the frequency domain, the least mean square (LMS) algorithm is used. The reference signal in LMS is the received data in the reference element. The purpose of pre‐processing is to make the received data in the other elements approach the reference signal, which, in essence, is to equalise the mismatched channel. Without any auxiliary sensors and calibration source, this method can estimate the channel characteristics relative to the reference elements. Simulations and experimental results show that the proposed method is significant in improving the anti‐jamming performance.
A hot Saturn on an eccentric orbit around the giant star K2-132
Authors: Jones M. I. , Brahm R. , Espinoza N. , Jordán A. , Rojas F. , Rabus M. , Drass H. , Zapata A. , Soto M. G. , Jenkins J. S. , Vučković M. , Ciceri S. , Sarkis P.
Published: January 2018

Although the majority of radial velocity detected planets have been found orbiting solar-type stars, a fraction of them have been discovered around giant stars. These planetary systems have revealed different orbital properties when compared to solar-type star companions. In particular, radial velocity surveys have shown that there is a lack of giant planets in close-in orbits around giant stars, in contrast to the known population of hot Jupiters orbiting solar-type stars. It has been theorized that the reason for this distinctive feature in the semimajor axis distribution is the result of the stellar evolution and/or that it is due to the effect of a different formation/evolution scenario for planets around intermediate-mass stars. However, in the past few years a handful of transiting short-period planets (P ≲ 10 days) have been found around giant stars, thanks to the high-precision photometric data obtained initially by the Kepler mission, and later by its two-wheel extension K2. These new discoveries have allowed us for the first time to study the orbital properties and physical parameters of these intriguing and elusive substellar companions. In this paper we report on an independent discovery of a transiting planet in field 10 of the K2 mission, also reported recently by Grunblatt et al. (2017, AJ, 154, 254). The host star has recently evolved to the giant phase, and has the following atmospheric parameters: Teff = 4878 ± 70 K, log g = 3.289 ± 0.004, and [Fe/H] = −0.11 ± 0.05 dex. The main orbital parameters of K2-132 b, obtained with all the available data for the system are: P = 9.1708 ± 0.0025 d, e = 0.290 ± 0.049, Mp = 0.495 ± 0.007 MJ and Rp = 1.089 ± 0.006 RJ. This is the fifth known planet orbiting any giant star with a < 0.1, and the most eccentric one among them, making K2-132 b a very interesting object.
Interim Report by Asia International Grid Connection Study Group
Authors: Omatsu Ryo
Published: January 2018

The Asia International Grid Connection Study Group Interim Report examines the feasibility of developing an international grid connection in Japan. The Group has investigated different cases of grid connections in Europe and conducted research on electricity markets in Northeast Asia, and identifies the barriers and challenges for developing an international grid network including Japan. This presentation introduces basic contents of the interim report by the Study Group.
The role of hydropower in electric power integration of Asian countries
Authors: Belyaev Lev , Savelyev Vladimir , Chudinova Lyudmila
Published: January 2018

The possible role of hydropower plants in formation and operation of interstate power pools is described based on the generalization of the world experience. Peculiarities of the influence of hydropower on development of interstate electric ties in this part of the world and potential effects are showed on the example of Central and Northeast Asia.
The Russian-Mongolian vector of the eastern energy strategy of Russia: role of energy potential of the Baikal region
Authors: Saneev Boris , Ivanova Irina , Izbuldin Alexander , Muzychuk Svetlana , Maysyuk Elena , Borisov Gennady , Butkhuyag Sodovin
Published: January 2018

The paper is concerned with the specific features of Russia’s economic development in a new economic environment that caused the need to revise the priorities of energy policy. The research presents the initial conditions, targets and strategic directions of energy development in the East of the country. The focus is made on the priority lines of innovation and technology cooperation between Russia and Northeast Asian countries in the field of energy, and recommendations on necessary conditions and initiatives for their successful implementation are given.
Decoherence and discrete symmetries in deformed relativistic kinematics
Authors: Arzano Michele
Published: January 2018

Models of deformed Poincaré symmetries based on group valued momenta have long been studied as effective modifications of relativistic kinematics possibly capturing quantum gravity effects. In this contribution we show how they naturally lead to a generalized quantum time evolution of the type proposed to model fundamental decoherence for quantum systems in the presence of an evaporating black hole. The same structures which determine such generalized evolution also lead to a modification of the action of discrete symmetries and of the CPT operator. These features can in principle be used to put phenomenological constraints on models of deformed relativistic symmetries using precision measurements of neutral kaons.
Towards a dispersive determination of the pion transition form factor
Authors: Leupold Stefan , Hoferichter Martin , Kubis Bastian , Niecknig Franz , Schneider Sebastian P.
Published: January 2018

We start with a brief motivation why the pion transition form factor is interesting and, in particular, how it is related to the high-precision standard-model calculation of the gyromagnetic ratio of the muon. Then we report on the current status of our ongoing project to calculate the pion transition form factor using dispersion theory. Finally we present and discuss a wish list of experimental data that would help to improve the input for our calculations and/or to cross-check our results.
From Hadronic Cross Section to the measurement of the Vacuum Polarization at KLOE: a fascinating endeavour
Authors: Venanzoni Graziano
Published: January 2018

The KLOE experiment at the ϕ-factory DAΦNE in Frascati is the first to have employed Initial State Radiation (ISR) to precisely determine the e+e− → π+π−(γ) cross section below 1 GeV. Such a measurement is particularly important to test the Standard Model (SM) calculation for the (g – 2) of the muon, where a long standing 3σ discrepancy is observed. I will review the ISR activity in KLOE in the last 20 years from the measurement of the hadronic cross section to the first direct determination of the time-like complex running α(s) in the region below 1 GeV.
SYNTHESIS–SYNLETT Lecture: Toward the Asymmetric Synthesis of Tetrapetalone A: Preparation of an Enantioenriched Indane Intermediate and Strategy for Endgame Glycosylation
Authors: Frontier Alison , Carlsen Peter , Stoutenburg Eric
Published: January 2018

A chiral auxiliary is employed to obtain, via Nazarov cyclization, a synthetic intermediate crucial to our previously reported synthesis of the tetrapetalone A core. This indane derivative, corresponding to the A and B rings of the tetrapetalone natural product skeleton, is then used to test an endgame strategy for installation of the β-rhodinosyl group on ring B. A palladium-catalyzed decarboxylative coupling is described that effects the exclusive formation of the desired β-glycosidic linkage, and the target rhodinose moiety can be obtained via hydrogenation.
Endoscopic Management of Developmental Anomalies of the Skull Base
Authors: Wilson Meghan , Snyderman Carl
Published: January 2018

Developmental anomalies of the skull base may present in childhood or as an adult. The most common pathologies include dermoid, encephalocele, and glioma. Encephaloceles may present as part of a syndrome. Other entities include infantile hemangiomas and teratoma. Endoscopic techniques provide a less invasive and morbid option for treatment. Proper evaluation and treatment is necessary to prevent complications such as meningitis.
Standardizing Second-Trimester Medical Termination: Effects on Clinical Outcomes
Authors: Wyatt Michelle , Tolcher Mary
Published: January 2018

Objective The objective of this study was to evaluate length of induction and postdelivery complications before and after implementation of a standardized approach to second-trimester medical termination of pregnancy.

Study Design This was a retrospective cohort study of all women undergoing medical termination of pregnancy between 130/7 and 266/7 weeks of gestation at a single, academic institution from July 1, 2012, through June 30, 2015. The primary outcome was the time from the start of induction of labor to delivery of the fetus. Postdelivery complications including the need for dilation and curettage (D&C), blood transfusion, and readmission to the hospital were secondary outcomes of interest.

Results A total of 62 women met inclusion criteria; 38 before and 24 after the intervention. There were no differences in measured baseline characteristics (p > 0.05). There was a significant decrease in induction time after the intervention (12.3 compared with 8.6 hours, p = 0.031). There was no significant difference in rates of D&C or other measured complications (p > 0.05).

Conclusion Implementation of a standardized clinical guideline for second-trimester medical termination was associated with a decrease in length of induction. There was no significant difference in need for D&C or postdelivery complications; however, we were underpowered for these secondary outcomes.
Stefanie Huber – Fit für die Schule?
Authors: Kroggel Lena
Published: January 2018

In ihrer Dissertation untersuchte Stefanie Huber, welche Fertigkeiten und Fähigkeiten ein Kind aus Sicht von Pädagogen benötigt, um als schulreif zu gelten. Basierend auf den Ergebnissen überlegte sie, mit welchen ergotherapeutischen Verfahren eine entsprechende Befunderhebung gelingt.
Selbstwerttraining für Therapeuten – Ein Credo für den Egoismus
Authors: Freitag-Herse Barbara
Published: January 2018

Ja, ich plädiere für mehr gesunden Egoismus. Seit Jahren coache ich Therapeuten und stelle immer wieder fest, dass eigene Bedürfnisse nicht wahrgenommen, verdrängt, ignoriert werden. Das muss nicht sein. Es sollte sich sogar ändern!
Tatort Klinik
Authors: Beine Karl H.
Published: January 2018

Tötungsserien in deutschen Krankenhäusern Hinter vorgehaltener Hand heißen sie Vollstrecker oder Todesengel, dennoch hat sie lange
Zeit niemand aufgehalten, und so gibt es in Deutschland bisher sieben Täter, die nachgewiesen insgesamt 56 Patienten umgebracht haben,
wahrscheinlich sind es mehr. Wie wird ein Mensch, dessen Aufgabe es eigentlich ist, Leben zu retten, zum Täter, der Leben nimmt? Unser Autor
Karl H. Beine hat die überführten Täter unter die Lupe genommen: ihre Profile, ihre Motive, ihre Täterwerdung. Und er beschreibt, wie es
geschehen konnte, dass sie nicht früher entdeckt und aufgehalten wurden.
Bogengangsdehiszenz: Verschlussoperationen mit niedriger Komplikationsrate
Authors: Volkenstein Stefan
Published: January 2018

Xie Y et al. Surgical Complications from Superior Canal Dehiscence Syndrome Repair: Two Decades of Experience. Otolaryngol Head Neck Surg
2017; 157: 273–280

Die Bogengangsdehiszenz ist eine seltene Erkrankung des Gleichgewichtsorgans und kann chirurgisch durch eine Verschlussoperation behandelt
werden. Wie oft es dabei zu allgemeinen Komplikationen kommt, und welche Risikofaktoren diese beeinflussen, haben Xie und
Kolleginnen/Kollegen auf Basis von 242 Fallberichten aus zwei Jahrzehnten ausgewertet.
Familiäre Herkunftsbedingungen und die sexuelle Entwicklung von Kindern und Jugendlichen – ein empirischer
Überblick
Authors: Weller Konrad , Bathke Gustav-Wilhelm
Published: January 2018

Sexuelle Bildung findet im Spannungsfeld zwischen Familie und außerfamiliären Sozialisationsinstanzen statt. Professionelle
Sexualpädagog*innen benötigen deshalb Kenntnisse auch zu familiärer Sexualerziehung und über den Zusammenhang familiärer
Herkunftsbedingungen und sexueller Entwicklung. Angesichts der in der Bundesrepublik seit 2014 geführten Debatte zum Verhältnis von
familiärer und außerfamiliärer sexueller Bildung werden in folgendem Beitrag empirische Befunde ausgewählter Studien zu familiären
Herkunftsbedingungen in ihrer Bedeutung für die Sexualentwicklung von Kindern und Jugendlichen dargestellt. Dafür werden neben
soziokulturellen Bedingungen wie Bildung der Eltern, Religiosität und nationale Herkunft auch Aspekte des Erziehungsstils, die verbale
Kommunikation in der Familie, der Umgang mit Nacktheit sowie die liebevolle Beziehungsgestaltung analysiert. Die Ergebnisse deuten auf einen
qualitativen Wandel der „Familiarisierung“ sexueller Entwicklung hin: Verbale Kommunikation im Sinne aufklärender Wissensvermittlung durch
Eltern hat aufgrund der angewachsenen Informationsmöglichkeiten in den modernen Medien an Bedeutung verloren. Der Einfluss auf die sexuelle
Entwicklung generell hat sich hingegen verstärkt. Eltern agieren zurückhaltender und grenzachtender – kommunikativ wie körperlich. Trotz
eines historischen Angleichs der Erziehungsmodi gegenüber Töchtern und Söhnen ist die sexuelle Entwicklung von Mädchen nach wie vor stärker
familiär beeinflusst als die von Jungen.
Rückenschmerz und Alltagsstress – Überfordert
Authors: Salathé Cornelia
Published: January 2018

Susanne Bechtel hat Rückenschmerzen, die sie bereits ihren Job und auch viele soziale Aktivitäten gekostet haben. Ihre Physiotherapeutin vermutet, dass die Schmerzen der jungen Mutter durch Überforderung im Alltag entstanden sind, und erarbeitet mit ihr einen Behandlungsplan aus Selbstwahrnehmung, Entspannung und Stabilitätstraining.
Phase noise reduction by optical phase-locked loop for a coherent bichromatic laser based on the injection-locking technique
Authors: Wu C. F. , Yan X. S. , Huang J. Q. , Zhang J. W. , Wang L. J.
Published: January 2018

We present a coherent bichromatic laser system with low phase noise. An optical injection process is used to generate coherent laser beams with a frequency difference of 9.192 631 77 GHz using an electro-optical modulator. An optical phase-locked loop is then applied to reduce the phase noise. The phase noise of the beat note is −41, −81, −98, −83, and −95 dBrad2/Hz at the offset frequencies of 1 Hz, 100 Hz, 1 kHz, 10 kHz, and 1 MHz, respectively. Compared to a system that uses optical injection alone, the phase noise is reduced by up to 20–30 dB in the low-frequency range, and the intermodulation effect on the continuous atomic clock is reduced by an order of magnitude. This configuration can adjust the intensities and polarizations of the laser beams independently and reduce the phase noise caused by environmental disturbances and optical injection, which may be useful for application to atomic coherence experiments.
Cavity enhanced third harmonic generation in graphene
Authors: Beckerleg Chris , Constant Thomas J. , Zeimpekis Ioannis , Hornett Samuel M. , Craig Chris , Hewak Daniel W. , Hendry Euan
Published: January 2018

Graphene displays a surprisingly large third order nonlinearity. Here, we report that conversion efficiencies approaching 10–4 are possible for third harmonic generation (THG). Moreover, the atomically thin nature of graphene allows for simple integration in cavity designs to increase this even further. We demonstrate a 117-fold enhancement, of resonant vs non-resonant wavelengths in the THG from graphene due to the integration of a graphene layer with a resonant cavity. This large enhancement occurs as the cavity is resonant for both the fundamental field and the third harmonic. We model this effect using the finite difference time domain approach. By comparing our model with experiment, we are able to deduce the value of a bulk third order susceptibility of graphene of |χ(3)|=4×10−17(m/V)2.
A reduced-order model for compressible flows with buffeting condition using higher order dynamic mode decomposition with a mode selection criterion
Authors: Kou Jiaqing , Le Clainche Soledad , Zhang Weiwei
Published: January 2018

This study proposes an improvement in the performance of reduced-order models (ROMs) based on dynamic mode decomposition to model the flow dynamics of the attractor from a transient solution. By combining higher order dynamic mode decomposition (HODMD) with an efficient mode selection criterion, the HODMD with criterion (HODMDc) ROM is able to identify dominant flow patterns with high accuracy. This helps us to develop a more parsimonious ROM structure, allowing better predictions of the attractor dynamics. The method is tested in the solution of a NACA0012 airfoil buffeting in a transonic flow, and its good performance in both the reconstruction of the original solution and the prediction of the permanent dynamics is shown. In addition, the robustness of the method has been successfully tested using different types of parameters, indicating that the proposed ROM approach is a tool promising for using in both numerical simulations and experimental data.
Surface recombination velocity imaging of wet-cleaned silicon wafers using quantitative heterodyne lock-in carrierography
Authors: Sun Qiming , Melnikov Alexander , Mandelis Andreas , Pagliaro Robert H.
Published: January 2018

InGaAs-camera based heterodyne lock-in carrierography (HeLIC) is developed for surface recombination velocity (SRV) imaging characterization of bare (oxide-free) hydrogen passivated Si wafer surfaces. Samples prepared using four different hydrofluoric special-solution etching conditions were tested, and a quantitative assessment of their surface quality vs. queue-time after the hydrogen passivation process was made. The data acquisition time for an SRV image was about 3 min. A “round-trip” frequency-scan mode was introduced to minimize the effects of signal transients on data self-consistency. Simultaneous best fitting of HeLIC amplitude-frequency dependencies at various queue-times was used to guarantee the reliability of resolving surface and bulk carrier recombination/transport properties. The dynamic range of the measured SRV values was established from 0.1 to 100 m/s.
Analysis of chaos in high-dimensional wind power system
Authors: Wang Cong , Zhang Hongli , Fan Wenhui , Ma Ping
Published: January 2018

A comprehensive analysis on the chaos of a high-dimensional wind power system is performed in this study. A high-dimensional wind power system is more complex than most power systems. An 11-dimensional wind power system proposed by Huang, which has not been analyzed in previous studies, is investigated. When the systems are affected by external disturbances including single parameter and periodic disturbance, or its parameters changed, chaotic dynamics of the wind power system is analyzed and chaotic parameters ranges are obtained. Chaos existence is confirmed by calculation and analysis of all state variables' Lyapunov exponents and the state variable sequence diagram. Theoretical analysis and numerical simulations show that the wind power system chaos will occur when parameter variations and external disturbances change to a certain degree.