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Ming-Ju Hsieh, Chih-Tsung Wen, Hsin-Yueh Fang, Yu-Wen Wen, Chien-Cheng Lin, Yin-Kai Chao
OBJECTIVES: The use of image-guided video-assisted thoracoscopic surgery for simultaneous localization and removal of small solitary pulmonary nodules in a hybrid operation room using C-arm cone-beam computed tomography is gaining momentum. We sought to assess the effect of the learning curve on procedural parameters and clinical outcomes of image-guided video-assisted thoracoscopic surgery for treating patients with small solitary pulmonary nodules. METHODS: Clinical variables and treatment outcomes of the 30 initial patients with solitary pulmonary nodules who were treated with image-guided video-assisted thoracoscopic surgery at Chang Gung Memorial Hospital (Taiwan) were prospectively analyzed...
December 13, 2017: Journal of Thoracic and Cardiovascular Surgery
Xuewei Fu, Chunhui Li, Yu Wang, Lucas Paul Kovatch, Louis Scudiero, Jin Liu, Wei-Hong Zhong
Solid polymer electrolytes play a critical role in the development of safe, flexible and all-solid-state energy storage devices. However, the low ion-conductivity has been the primary challenge impeding them from practical applications. Here, we propose a new biotechnology to fabricate novel protein-ceramic hybrid nanofillers for simultaneously boosting the ionic conductivity, mechanical properties and even adhesion properties of solid polymer electrolytes. This hybrid nanofiller is fabricated by coating ion-conductive soy-proteins onto TiO2 nanoparticles via a controlled denaturation process in appropriate solvent and conditions...
January 15, 2018: ACS Applied Materials & Interfaces
Mein Jin Tan, Han-Chi Pan, Hui Ru Tan, Jian Wei Chai, Qi Feng Lim, Ten It Wong, Xiaodong Zhou, Zi-Yao Hong, Lun-De Liao, Kien Voon Kong
Utilizing the size-dependent adsorption properties of ruthenium carbonyl clusters (Ru-carbon monoxide (CO)) onto graphene oxide (GO), a facile CO-release platform for in situ vasodilation as a treatment for stroke-related vascular diseases is developed. The rate and amount of formation of the CO-release-active RuII (CO)2 species can be modulated by a simple mixing procedure at room temperature. The subsequent thermally induced oxidation of RuII (CO)2 to RuO2 on the GO surface results in the release of CO. Further modulation of thermal and CO-release properties can be achieved via a hybridization of medium- and high-nuclearity of Ru-CO clusters that produces a RuO2 /RuII (CO)2 /6 Ru-CO-GO composite, where 6 Ru-CO-GO provides a photothermally activated reservoir of RuII (CO)2 species and the combined infrared absorption properties of GO and RuO2 provides photothermal response for in situ CO-release...
January 12, 2018: Advanced Healthcare Materials
Mohammad Delower Hossain, Robert A Mayanovic, Ridwan Sakidja, Mourad Benamara, Richard Wirth
Room-temperature ferrimagnetic and superparamagnetic properties, and the magnetic interactions between the core and shell, of our iron-incorporated chromia-based core shell nanoparticles (CSNs) have been investigated using a combination of experimental measurement and density functional theory (DFT) based calculations. We have synthesized CSNs having an epitaxial shell and well-ordered interface properties by utilizing our hydrothermal nanophase epitaxy (HNE) technique. The ferrimagnetic and superparamagnetic properties of the CSNs are manifested beyond room temperature and magnetic measurements reveal that the exchange bias interaction between the antiferromagnetic (AFM) core and ferrimagnetic (FiM) shell persists close to ambient temperature...
January 12, 2018: Nanoscale
Jia-Yu Shen, Hong-Wei Zhang, Kang-Jun Fan, Hu Liao, Er-Yong Zhang, Jia Hu
BACKGROUND: Aortoesophageal fistula (AEF) and arch pseudoaneurysm are rare complications induced by a foreign body, and considerable controversy remains regarding the appropriate management strategies. We herein report a successful one-stage hybrid treatment in a patient with AEF and arch pseudoaneurysm. CASE PRESENTATION: The patient, a 40-year-old man, presented to the emergency room because of intense retrosternal discomfort for 3 days and hematemesis for 3 h...
January 11, 2018: BMC Surgery
Eiichi Inami, Mikio Shimasaki, Hideki Yorimitsu, Toyo Kazu Yamada
An important step toward molecule-based electronics is to realize a robust and well-ordered molecular network at room temperature. To this end, one key challenge is tuning the molecule-substrate electronic interactions that influence not only the molecular selfassembly but also the stability of the resulting structures. In this study, we investigate the film formation of π-conjugated metal-free phthalocyanine molecules on a 3d-bcc-Fe(001) whisker substrate at 300 K by using ultra-high-vacuum scanning tunneling microscopy...
January 10, 2018: Scientific Reports
Lei Zhang, Yakun Yuan, Jason Lapano, Matthew Brahlek, Shiming Lei, Bernd Kabius, Venkatraman Gopalan, Roman Engel-Herbert
Strain engineering of thin films is a conventionally employed approach to enhance material properties and to energetically prefer ground states that would otherwise not be attainable. Controlling strain states in perovskite oxide thin films is usually accomplished through coherent epitaxy by using lattice-mismatched substrates with similar crystal structures. However, the limited choice of suitable oxide substrates makes certain strain states experimentally inaccessible and a continuous tuning impossible. Here we report a strategy to continuously tune epitaxial strains in perovskite films grown on Si (001) by utilizing the large difference of thermal expansion coefficients between the film and the substrate...
January 10, 2018: ACS Nano
Marina Pieri, Giovanni Landoni, Luca Cabrini
Endoscopic procedures, such as transesophageal echocardiography, gastroscopy, and airway fibroscopy, routinely are performed in a heterogenous population of patients for diagnostic/interventional purposes (eg, transfemoral aortic valve replacement, airway fibroscopies, and intubation). Sedation frequently is administered to achieve an appropriate degree of patient compliance and procedure success. Patients with reduced respiratory reserve or those who are overly sedated, however, may develop hypoxia and respiratory failure during endoscopies, necessitating premature termination of the examination itself...
September 27, 2017: Journal of Cardiothoracic and Vascular Anesthesia
Ziying Wang, Tong Zhang, Chen Zhao, Tianyi Han, Teng Fei, Sen Liu, Geyu Lu
In this paper, we demonstrate room-temperature NO2 gas sensors using Pd nanoparticles (NPs) and SnO2 NPs decorated reduced graphene oxide (Pd-SnO2-RGO) hybrids as sensing materials. It is found that ultrafine Pd NPs and SnO2 NPs with particle sizes of 3-5 nm are attached to RGO nanosheets. Compared to SnO2-RGO hybrids, the sensor based on Pd-SnO2-RGO hybrids exhibited higher sensitivity at room temperature, where the response to 1 ppm NO2 was 3.92 with the response time and recovery time being 13 s and 105 s...
December 28, 2017: Journal of Colloid and Interface Science
Hongyan Zhang, Jie Lv, Zhenhong Jia
We successfully demonstrate a porous silicon (PS) double Bragg mirror by electrochemical etching at room temperature as a deoxyribonucleic acid (DNA) label-free biosensor for detecting ammonia-oxidizing bacteria (AOB). Compared to various other one-dimension photonic crystal configurations of PS, the double Bragg mirror structure is quite easy to prepare and exhibits interesting optical properties. The width of high reflectivity stop band of the PS double Bragg mirror is about 761 nm with a sharp and deep resonance peak at 1328 nm in the reflectance spectrum, which gives a high sensitivity and distinguishability for sensing performance...
January 1, 2018: Sensors
Shih-Chang Yuan, Shih-Wen Chin, Chen-Yu Lee, Fure-Chyi Chen
BACKGROUND: In a breeding program, usually only superior parents are chosen for cross hybridization. Pollens of elite cultivars may not be available at hand. Properly stored pollens provide an opportunity for cross hybridization at unavailable time. RESULTS: Pollen of a Phalaenopsis hybrid was evaluated for the storage ability at different temperatures, including room temperature, 4, - 20, and - 80 °C for up to 96 weeks. The viability of pollen was assessed by TTC staining, in vitro germination and hand pollination during and after storage...
January 3, 2018: Botanical Studies (Taipei, Taiwan)
Shashi Poddar, Pedro de Sa, Ronggang Cai, Laurent Delannay, Bernard Nysten, Luc Piraux, Alain M Jonas
Magnetoelectric layers with a strong coupling between ferroelectricity and ferromagnetism offer attractive opportunities for the design of new device architectures such as dual-channel memory and multi-responsive sensors and actuators. However, materials in which a magnetic field can switch an electric polarization are extremely rare, work most often at very low temperatures only, and/or comprise complex materials difficult to integrate. Here, we show that magnetostriction and flexoelectricity can be harnessed to strongly couple electric polarization and magnetism in a regularly nanopatterned magnetic metal/ferroelectric polymer layer, to the point that full reversal of the electric polarization can occur at room temperature by the sole application of a magnetic field...
January 3, 2018: ACS Nano
Arpita Jana, Elke Scheer
In this work, we report a one-step method for the preparation of graphene-wrapped zinc oxide (ZnO) nanoparticle (NP) (ZnO@G) hybrids. These hybrids are characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, optical absorption measurements, photoluminescence emission spectroscopy (PL) and M-H hysteresis measurements. All the results reveal that the ZnO NPs are entirely covered with graphene sheets. In the PL spectra the quenching of the band gap emission and the enhanced green emission serves as evidence of the electron transfer from the ZnO NPs to the graphene layer...
December 31, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Jakub Jagielski, Sudhir Kumar, Mingchao Wang, Declan Scullion, Robert Lawrence, Yen-Ting Li, Sergii Yakunin, Tian Tian, Maksym V Kovalenko, Yu-Cheng Chiu, Elton J G Santos, Shangchao Lin, Chih-Jen Shih
The outstanding excitonic properties, including photoluminescence quantum yield (ηPL), of individual, quantum-confined semiconductor nanoparticles are often significantly quenched upon aggregation, representing the main obstacle toward scalable photonic devices. We report aggregation-induced emission phenomena in lamellar solids containing layer-controlled colloidal quantum wells (QWs) of hybrid organic-inorganic lead bromide perovskites, resulting in anomalously high solid-state ηPL of up to 94%. Upon forming the QW solids, we observe an inverse correlation between exciton lifetime and ηPL, distinct from that in typical quantum dot solid systems...
December 2017: Science Advances
Ho Seok Seo, Yong Hwa Eom, Min Ki Kim, Young-Min Kim, Byung Joo Song, Kyo Young Song
BACKGROUND: Despite many high-quality programs in basic surgical-skill education, the surgical skill of junior doctors varies widely. This, together with the waning interest in surgery as a career among medical students, is a serious issue confronted by hospitals and healthcare systems worldwide. We, therefore, developed and implemented an intensive one-day surgical-skill training course for two purposes; it would improve surgical skills and increase interest in surgery among medical students...
December 28, 2017: BMC Medical Education
Hongjun Chen, Meng Zhang, Renheng Bo, Chog Barugkin, Jianghui Zheng, Qingshan Ma, Shujuan Huang, Anita W Y Ho-Baillie, Kylie R Catchpole, Antonio Tricoli
Hybrid halide perovskite is one of the promising light absorber and is intensively investigated for many optoelectronic applications. Here, the first prototype of a self-powered inorganic halides perovskite for chemical gas sensing at room temperature under visible-light irradiation is presented. These devices consist of porous network of CsPbBr3 (CPB) and can generate an open-circuit voltage of 0.87 V under visible-light irradiation, which can be used to detect various concentrations of O2 and parts per million concentrations of medically relevant volatile organic compounds such as acetone and ethanol with very quick response and recovery time...
December 27, 2017: Small
Alla Malinenko, Alban Jonchere, Luc Girard, Sandra Parrès-Maynadié, Olivier Diat, Pierre Bauduin
Owing to their multiple charges and their nanometric size polyoxometalates (POMs) are at the frontier between ions and charged colloids. We investigated here the effect of POM-POM electrostatics repulsions on their self-diffusion in water by varying POM and supporting salt concentrations. The self-diffusion coefficients of two Keggin's POMs: silicotungstate (SiW4-) and phosphotungstate (PW3-) were determined by dynamic light scattering (DLS) and DOSY 1H/31P NMR whereas POM-POM electrostatic repulsions were investigated by the determination of the static structure factors using small angle X-ray scattering (SAXS)...
December 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Masaki Ueno, Shinya Hayami, Tetsuo Sonomura, Ryota Tanaka, Manabu Kawai, Seiko Hirono, Ken-Ichi Okada, Hiroki Yamaue
BACKGROUND: To accomplish laparoscopic anatomical liver resection, intraoperative liver segmentation is necessary. Tattooing method or Glissonian approach will be used in a similar way to that in open liver resection. Moreover, in liver segment detection, the fluorescence of indocyanine green (ICG) means it has been recognized as a useful dye. In laparoscopy, however, there are technical difficulties in performing these conventional methods, so development of new techniques is necessary for liver segment identification...
December 22, 2017: Surgical Endoscopy
Xiang Ren, Xuqiang Ji, Yicheng Wei, Dan Wu, Yong Zhang, Min Ma, Zhiang Liu, Abdullah M Asiri, Qin Wei, Xuping Sun
It is highly desired to develop efficient earth-abundant electrocatalysts for the oxygen evolution reaction (OER) in alkaline media. In this communication, we report the in situ electrochemical conversion of a nanoarray of Cu(tetracyanoquinodimethane), Cu(TCNQ), an inorganic-organic hybrid, on Cu foam into CuO nanocrystals confined in a highly conductive nanoarray via anode oxidation. As a 3D catalyst electrode, the resulting CuO-TCNQ/CF shows high OER activity and demands an overpotential of only 317 mV to drive a geometrical catalytic current density of 25 mA cm-2...
December 18, 2017: Chemical Communications: Chem Comm
Poonsuk Poosimma, Areeporn Ontam, Sonchai Intachai, Nithima Khaorapapong, Makoto Ogawa
The preparation of cadmium selenide nanoparticles in the interlayer space of magadiite, a layered sodium silicate, modified with the cetyltrimethylammonium cation was studied. The preparation was based on the formation of cadmium selenide by the reaction between the cetyltrimethylammonium modified magadiite and an aqueous mixture of cadmium sulfate and sodium selenosulfite at room temperature. The resulting hybrids were characterized by XRD, FT-IR, HRTEM, TG-DTA, as well as UV-visible and photoluminescence spectroscopy...
December 18, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
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