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Xiaoxia Hu, Yi Sun, Xinxin Xia, Lili Xu, Bihe Min, Daoyin Zhou, Libing Wang, Hui Wang, Ziguang Niu, Miaoxia He, Jianmin Wang, Anmei Deng, Jianmin Yang
No abstract text is available yet for this article.
November 2016: Journal of Clinical Microbiology
Xiaoxia Hu, Yi Sun, Xinxin Xia, Lili Xu, Bihe Min, Daoyin Zhou, Libing Wang, Hui Wang, Ziguang Niu, Miaoxia He, Jianmin Wang, Anmei Deng, Jianmin Yang
No abstract text is available yet for this article.
November 2016: Journal of Clinical Microbiology
Sang-Hyun Pyo, Pengrui Wang, Wei Zhu, Henry Hwang, John Jamison Warner, Shaochen Chen
Photo-sensitive diurethanes were prepared from a green chemistry synthesis pathway based on methacrylate-functionalized six-membered cyclic carbonate and biogenic amines. A continuous optical 3D printing method for the diurethanes was developed to create user-defined gradient stiffness and smooth complex surface microstructures in seconds. The green chemistry-derived polyurethane (gPU) showed high optical transparency and we demonstrate the ability to tune the material stiffness of the printed structure along a gradient by controlling the exposure time and selecting various amine compounds...
December 9, 2016: ACS Applied Materials & Interfaces
Janneke Veerbeek, Nienke J Firet, Wouter J C Vijselaar, Rick Elbersen, Han J G E Gardeniers, Jurriaan Huskens
Silicon-based solar fuel devices require passivation for optimal performance, yet at the same time need functionalization with (photo)catalysts for efficient solar fuel production. Here, we use molecular monolayers to enable electrical passivation and simultaneous functionalization of silicon-based solar cells. Organic monolayers were coupled to silicon surfaces by hydrosilylation in order to avoid an insulating silicon oxide layer at the surface. Monolayers of 1-tetradecyne were shown to passivate silicon micropillar-based solar cells with radial junctions, by which the efficiency increased from 8...
December 9, 2016: ACS Applied Materials & Interfaces
Xiaoyan Zhang, Andrew Selkirk, Saifeng Zhang, Jiawei Huang, Yuanxin Li, Yafeng Xie, Ningning Dong, Yun Cui, Long Zhang, Werner J Blau, Jun Wang
Nanocomposites of layered MoS2 and multi-walled carbon nanotubes (CNTs) with core-shell structure were prepared via a simple solvothermal method. The formation of MoS2 nanosheets on the surface of coaxial CNTs has been confirmed by scanning electron microscopy, transmission electron microscopy, absorption spectrum, Raman spectroscopy, and X-ray photoelectron spectroscopy. Enhanced third-order nonlinear optical performances were observed for both femtosecond and nanosecond laser pulses over a broad wavelength range from the visible to the near infrared, in compared to those of MoS2 and CNTs alone...
December 9, 2016: Chemistry: a European Journal
Shlomi Bretler, Itai Mizrachi, Anthony Luder, Yaniv Avraham, Adi Sharabi-Nov, Peter Gilbey
AIM: Improved communication with staff during a child's hospitalisation is an important determinant of family satisfaction. We examined whether displaying staff photographs in prominent locations would help children and their parents or guardians to recognise staff and whether this enhanced identification would improve parental satisfaction with their child's hospitalisation. METHODS: No photographs were displayed during the first part of the study. During the second part of the study, staff photographs were placed in prominent locations throughout the paediatric ward...
December 9, 2016: Acta Paediatrica
Qian Zhao, G R Li, Jian Song, Yulong Zhao, Yinghuai Qiang, X P Gao
In an all-solid-state perovskite solar cell, methylammonium lead halide film is in charge of generating photo-excited electrons, thus its quality can directly influence the final photovoltaic performance of the solar cell. This paper accentuates a very simple chemical approach to improving the quality of a perovskite film with a suitable amount of acetic acid. With introduction of acetate ions, a homogeneous, continual and hole-free perovskite film comprised of high-crystallinity grains is obtained. UV-visible spectra, steady-state and time-resolved photoluminescence (PL) spectra reveal that the obtained perovskite film under the optimized conditions shows a higher light absorption, more efficient electron transport, and faster electron extraction to the adjoining electron transport layer...
December 9, 2016: Scientific Reports
Cuixia Li, Jing Zuo, Li Zhang, Yulei Chang, Youlin Zhang, Langping Tu, Xiaomin Liu, Bin Xue, Qiqing Li, Huiying Zhao, Hong Zhang, Xianggui Kong
Accurate quantitation of intracellular pH (pHi) is of great importance in revealing the cellular activities and early warning of diseases. A series of fluorescence-based nano-bioprobes composed of different nanoparticles or/and dye pairs have already been developed for pHi sensing. Till now, biological auto-fluorescence background upon UV-Vis excitation and severe photo-bleaching of dyes are the two main factors impeding the accurate quantitative detection of pHi. Herein, we have developed a self-ratiometric luminescence nanoprobe based on förster resonant energy transfer (FRET) for probing pHi, in which pH-sensitive fluorescein isothiocyanate (FITC) and upconversion nanoparticles (UCNPs) were served as energy acceptor and donor, respectively...
December 9, 2016: Scientific Reports
Yusuke Okuno, Silvia Cavagnero
No abstract text is available yet for this article.
December 8, 2016: Journal of Physical Chemistry. B
Tiankai Zhang, Mingzhu Long, Keyou Yan, Xiaoliang Zeng, Fengrui Zhou, Zefeng Chen, Xi Wan, Kun Chen, Pengyi Liu, Faming Li, Tao Yu, Weiguang Xie, Jianbin Xu
Quantification of intergrain length scale properties of CH3NH3PbI3 (MAPbI3) can provide further understanding of material physics, leading to improved device performance. In this work, we noticed that two typical types of facets appear in sequential deposited perovskite (SDP) films: smooth and steplike morphologies. By mapping the surface potential as well as the photoluminescence (PL) peak position, we revealed the heterogeneity of SDP thin films that smooth facets are almost intrinsic with a PL peak at 775 nm, while the steplike facets are p-type-doped with 5-nm blue-shifted PL peak...
November 30, 2016: ACS Applied Materials & Interfaces
Krystyna Rymarczyk, Łukasz Żurawski, Kamila Jankowiak-Siuda, Iwona Szatkowska
Facial mimicry is the tendency to imitate the emotional facial expressions of others. Increasing evidence suggests that the perception of dynamic displays leads to enhanced facial mimicry, especially for happiness and anger. However, little is known about the impact of dynamic stimuli on facial mimicry for fear and disgust. To investigate this issue, facial EMG responses were recorded in the corrugator supercilii, levator labii, and lateral frontalis muscles, while participants viewed static (photos) and dynamic (videos) facial emotional expressions...
2016: Frontiers in Psychology
Bodil S A Karlsson, Carl Martin Allwood
The Dress photograph, first displayed on the internet in 2015, revealed stunning individual differences in color perception. The aim of this study was to investigate if lay-persons believed that the question about The Dress colors was answerable. Past research has found that optimism is related to judgments of how answerable knowledge questions with controversial answers are (Karlsson et al., 2016). Furthermore, familiarity with a question can create a feeling of knowing the answer (Reder and Ritter, 1992)...
2016: Frontiers in Psychology
Yuichi Kano, Prachya Musikasinthorn, Akihisa Iwata, Sein Tun, Lkc Yun, Seint Seint Win, Shoko Matsui, Ryoichi Tabata, Takeshi Yamasaki, Katsutoshi Watanabe
BACKGROUND: Inle (Inlay) Lake, an ancient lake of Southeast Asia, is located at the eastern part of Myanmar, surrounded by the Shan Mountains. Detailed information on fish fauna in and around the lake has long been unknown, although its outstanding endemism was reported a century ago. NEW INFORMATION: Based on the fish specimens collected from markets, rivers, swamps, ponds and ditches around Inle Lake as well as from the lake itself from 2014 to 2016, we recorded a total of 948 occurrence data (2120 individuals), belonging to 10 orders, 19 families, 39 genera and 49 species...
2016: Biodiversity Data Journal
Mengli Feng, Zhiyuan Ruan, Jiachen Shang, Lu Xiao, Aijun Tong, Yu Xiang
G-quadruplex-containing DNAzymes and aptamers are widely applied in many research fields because of their high stability and prominent activities versus the protein counterparts. In this work, G-quadruplex DNAs were equipped with photolabile groups to construct photocaged DNAzymes and aptamers. We incorporated TEEP-OH (thioether-enol phosphate, phenol substituted) into phosphodiester backbone of G-quadruplex DNA by a facile postsynthetic method to achieve efficient photocaging of their activities. Upon light irradiation, the peroxidase-mimicking activity of the caged G-quadruplex DNAzyme was activated, through the transformation of TEEP-OH into a native DNA phos-phodiester without any artificial scar...
December 9, 2016: Bioconjugate Chemistry
Laurie Ann King, Bruce A Parkinson
Cyanine dyes, often utilized in dye-sensitized solar cells (DSSC), form a range of molecular species from monomers to large H- and J- aggregates in both solution and when adsorbed at a photoelectrode surface. To determine the relative capability of the different dye species to inject photo-excited electrons into a wideband gap oxide semiconductor, sensitization at a single crystal zinc oxide surface was studied by simultaneous attenuated reflection (ATR) UV-vis absorption and photocurrent spectroscopy measurements...
December 8, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Vincent Wing-Hei Lau, Daniel Klose, Hatice Kasap, Filip Podjaski, Marie-Claire Pignié, Erwin Reisner, Gunnar Jeschke, Bettina V Lotsch
While natural photosynthesis serves as the model system for efficient charge separation and decoupling of redox reactions, bio-inspired artificial systems typically lack applicability owing to synthetic challenges and structural complexity. We present herein a simple and inexpensive system that, under solar irradiation, forms highly reductive radicals in the presence of an electron donor, with lifetimes exceeding the diurnal cycle. This radical species is formed within a cyanamide-functionalized polymeric network of heptazine units and can give off its trapped electrons in the dark to yield H2 , triggered by a co-catalyst, thus enabling the temporal decoupling of the light and dark reactions of photocatalytic hydrogen production through the radical's longevity...
December 8, 2016: Angewandte Chemie
Da-Qi Fu, Lan-Huan Meng, Ben-Zhong Zhu, Hong-Liang Zhu, Hua-Xue Yan, Yun-Bo Luo
Ripening is an important stage of fruit development. To screen the genes associated with pigment formation in tomato fruit, a suppression subtractive hybridization (SSH) cDNA library was constructed by using tomato fruit in the green ripe and break ripe stages, and 129 differential genes were obtained. Using redness as a screening marker, virus-induced gene silencing (VIGS) of the differential genes was performed with a sprout vacuum-infiltration system (SVI). The results showed that silencing the SlNAP7 gene affected the chloroplast development of tomato leaves, manifesting as a photo-bleaching phenotype, and silenced fruit significantly affected the accumulation of lycopene, manifested as a yellow phenotype...
December 8, 2016: Scientific Reports
Igor Lisovskyy, Mariia Voitovych, Volodymyr Litovchenko, Vasyl Voitovych, Iurii Nasieka, Viktor Bratus
Using photo-luminescence, infrared spectroscopy, and electron spin resonance technique, the silicon dioxide films with embedded silicon nanocrystals (nc-Si/SiO2 structures) have been investigated after γ-irradiation with the dose 2 × 10(7) rad and subsequent annealing at 450 °C in hydrogen ambient. For the first time, it was shown that such a radiation-thermal treatment results in significant increase of the luminescence intensity, in a red shift of the photoluminescence spectra, and in disappearance of the electron-spin resonance signal related to silicon broken bonds...
December 2016: Nanoscale Research Letters
Amy Dawel, Luke Wright, Jessica Irons, Rachael Dumbleton, Romina Palermo, Richard O'Kearney, Elinor McKone
In everyday social interactions, people's facial expressions sometimes reflect genuine emotion (e.g., anger in response to a misbehaving child) and sometimes do not (e.g., smiling for a school photo). There is increasing theoretical interest in this distinction, but little is known about perceived emotion genuineness for existing facial expression databases. We present a new method for rating perceived genuineness using a neutral-midpoint scale (-7 = completely fake; 0 = don't know; +7 = completely genuine) that, unlike previous methods, provides data on both relative and absolute perceptions...
December 7, 2016: Behavior Research Methods
Ernesto Morales, Sally Lindsay, Geoffrey Edwards, Lori Howell, Claude Vincent, Nicole Yantzi, Véronique Gauthier
PURPOSE: Winter-related research about the experience of navigating in the urban context has mostly focused on the elderly population with physical disabilities. The aim of this project was to explore potential design solutions to enhance young people's mobility devices and the built environment to improve accessibility and participation in winter. METHODS: A multi-method qualitative design process included the following steps: (1) in-depth interviews; (2) photo elicitation; (3) individual co-design sessions; and (4) group co-design sessions (i...
December 7, 2016: Disability and Rehabilitation
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