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https://www.readbyqxmd.com/read/29785846/d-a-d-typed-hole-transport-materials-for-efficient-perovskite-solar-cells-tuning-photovoltaic-properties-via-the-acceptor-group
#1
Peng Xu, Peng Liu, Yuanyuan Li, Bo Xu, Lars Kloo, Licheng Sun, Yong Hua
Two D-A-D structured hole-transport materials (YN1 and YN2) have been synthesized and used in perovskite solar cells. The two HTMs have low-lying HOMO levels and impressive mobility. PSCs fabricated with YN2 showed a PCE value of 19.27% in ambient air, which is significantly higher than that of Spiro-OMeTAD (17.80%). PSCs based on YN1 showed an inferior PCE of 16.03%. We found that the incorporation of the stronger electron-withdrawing group in the HTM YN2 improves the PCE of PSCs. Furthermore, the YN2-based PSCs exhibit good long-term stability retaining 91...
May 22, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29776957/sudden-death-in-patients-with-severe-aortic-stenosis-observations-from-the-current-as-registry
#2
Tomohiko Taniguchi, Takeshi Morimoto, Hiroki Shiomi, Kenji Ando, Norio Kanamori, Koichiro Murata, Takeshi Kitai, Yuichi Kawase, Chisato Izumi, Takao Kato, Katsuhisa Ishii, Kazuya Nagao, Yoshihisa Nakagawa, Mamoru Toyofuku, Naritatsu Saito, Kenji Minatoya, Takeshi Kimura
BACKGROUND: The annual incidence of sudden death has been reported to be low (<1%/year) in asymptomatic patients with severe aortic stenosis (AS), and there is a paucity of data on the risk factors of sudden death in patients with severe AS. METHODS AND RESULTS: We evaluated the incidence and risk factors of sudden death during the median follow-up period of 1334 days in the Contemporary Outcomes After Surgery and Medical Treatment in Patients With Severe Aortic Stenosis (CURRENT AS) registry enrolling 3815 consecutive patients with severe AS between 2003 and 2011...
May 18, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29775382/data-mining-cmmss-how-to-convert-data-into-knowledge
#3
Larry Fennigkoh, D Courtney Nanney
Although the healthcare technology management (HTM) community has decades of accumulated medical device-related maintenance data, little knowledge has been gleaned from these data. Finding and extracting such knowledge requires the use of the well-established, but admittedly somewhat foreign to HTM, application of inferential statistics. This article sought to provide a basic background on inferential statistics and describe a case study of their application, limitations, and proper interpretation. The research question associated with this case study involved examining the effects of ventilator preventive maintenance (PM) labor hours, age, and manufacturer on needed unscheduled corrective maintenance (CM) labor hours...
January 2018: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29773363/characterization-of-a-fluorescent-hydrogel-synthesized-using-chitosan-polyvinyl-alcohol-and-9-anthraldehyde-for-the-selective-detection-and-discrimination-of-trace-fe-3-and-fe-2-in-water-for-live-cell-imaging
#4
Santu Maity, Nira Parshi, Chandraday Prodhan, Keya Chaudhuri, Jhuma Ganguly
A three-dimensional fluorescent hydrogel based on chitosan, polyvinyl alcohol and 9-anthraldehyde (ChPA) has been successfully designed and synthesized for the selective detection and discrimination of Fe3+ and Fe2+ in aqueous environment. The unique characteristics of ChPA has been confirmed by the Fourier-transform infrared spectroscopy (FTIR), rheological measurement, scanning electron microscopy (SEM), thermogravimetry and differential thermogravimetry (TG-DTG), ultraviolet-visible spectroscopy (UV-vis), fluorescence studies, transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD) and dynamic light scattering (DLS)...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29771585/a-roundtable-discussion-htm-a-career-field-rich-with-opportunities-and-challenges
#5
Joe Sheffer, Barbara Christe, Jennifer DeFrancesco, Codi L Nelson, Dean Skillicorn, Brendan Welch, Steven J Yelton
No abstract text is available yet for this article.
May 2018: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29771583/places-where-htm-can-find-money-in-the-hospital
#6
Patrick K Lynch
No abstract text is available yet for this article.
May 2018: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29771581/adding-it-to-the-htm-toolkit
#7
Gavin Stern
No abstract text is available yet for this article.
May 2018: Biomedical Instrumentation & Technology
https://www.readbyqxmd.com/read/29757926/duration-of-the-action-of-rocuronium-in-patients-with-bmi-of-less-than-25-an-observational-study
#8
Osamu Takahata, Ken-Ichi Takahoko, Tomoki Sasakawa, Yasuyoshi Inagaki, Hiroyuki Takahoko, Takayuki Kunisawa
BACKGROUND: The duration of rocuronium in patients with BMI more than 30 kg m is prolonged. Whether the reverse is true when BMI is less than 18.5 kg m is unclear. OBJECTIVE: The objective of this study was to investigate whether a BMI less than 25 kg m affects the duration of rocuronium in doses adjusted for actual body weight. DESIGN: A prospective, observational, single-centre study. SETTING: The operating room of a teaching hospital from 1 June 2008 to 30 June 2015...
May 2, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29752408/interleukin-6-mediated-trans-signaling-inhibits-transforming-growth-factor-%C3%AE-signaling-in-trabecular-meshwork-cells
#9
Miyuki Inoue-Mochita, Toshihiro Inoue, Sachi Kojima, Akiko Futakuchi, Tomokazu Fujimoto, Saori Sato-Ohira, Utako Tsutsumi, Hidenobu Tanihara
Glaucoma is one of the major causes of blindness, and TGF-β2 has been found to be elevated in the aqueous humor of eyes with primary open-angle glaucoma (POAG). TGF-β2 in aqueous humor causes the glaucoma-related fibrosis of human trabecular meshwork (HTM), suggesting an important role of TGF-β in POAG pathogenesis. Here, we sought to elucidate the effects of IL-6 trans-signaling on TGF-β signaling in HTM cells. Using a multiplex immunoassay, POAG patients decreased IL-6 levels and increased soluble IL-6 receptor (sIL-6R) levels compared with the controls...
May 11, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29742303/long-term-stability-of-the-oxidized-hole-transporting-materials-used-in-perovskite-solar-cells
#10
Ernestas Kasparavicius, Artiom Magomedov, Tadas Malinauskas, Vytautas Getautis
Vast majority of the hole transporting materials require the use of chemical doping as an essential step for preparation of efficient perovskite solar cells. Oxidized organic hole transporting material, obtained during doping procedure, could potentially be one of the weak links in the device composition. It's not uncommon for the solar cell to heat up under summer sun; therefore, all device components must possess some degree of resistance to repetitive thermal stress. In the current publication a series of oxidized hole transporting materials have been synthesized and their long-term stability investigated...
May 9, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29726780/intrinsic-development-of-choroidal-and-thalamic-collaterals-in-hemorrhagic-onset-moyamoya-disease-case-control-study-of-the-japan-adult-moyamoya-trial
#11
Miki Fujimura, Takeshi Funaki, Kiyohiro Houkin, Jun C Takahashi, Satoshi Kuroda, Yasutake Tomata, Teiji Tominaga, Susumu Miyamoto
OBJECTIVE This study was performed to identify the angiographic features of hemorrhagic-onset moyamoya disease (MMD) in comparison with those of patients with ischemic-onset MMD. METHODS This case-control study compared the data set of the Japan Adult Moyamoya (JAM) Trial with the angiographic data of adult patients with ischemic-onset MMD. The authors analyzed angiograms obtained at onset, classifying the collaterals into 3 subtypes: lenticulostriate anastomosis, thalamic anastomosis, and choroidal anastomosis...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29722399/intramolecular-and-interfacial-dynamics-of-triarylamine-based-hole-transport-materials
#12
Johannes R Klein, Mirko Scholz, Kawon Oum, Thomas Lenzer
We present steady-state and time-resolved spectroscopic investigations combined with detailed kinetic modelling for the triarylamine derivatives X60 and PTAA which serve as hole transport materials (HTMs) in perovskite solar cells and represent model compounds for organic electronic materials. Photoexcitation of the spiro-fluorene-xanthene X60 populates its S1 state which decays via intersystem crossing (ISC) as well as fluorescence and internal conversion on a nanosecond time scale. Photoexcitation of the PTAA polymer leads to the formation of singlet excitons which relax and migrate in the time regime from a few to about a hundred picoseconds and decay to the ground state with a lifetime of ca...
May 3, 2018: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/29719512/the-bodies-in-charge-of-animal-welfare-what-they-do-and-what-they-could-do
#13
REVIEW
Giuliano Grignaschi, Veronica Redaelli, Fabio Luzi, Massenzio Fornasier
The coming into force of the 2010/63/EU (Directive of the European Parliament and of the Council of 22 September 2010) Standard, regarding the protection of animals used for scientific purposes, has made it mandatory for all establishments breeding, supplying, and using said animals to have an Animal Welfare Body (AWB). The establishment of a body such as the AWB represents a strong innovation compared to previous regulations (Dir. 86/609/CEE). Building from the key concept of the 3 Rs, European Community legislators acknowledged that the effective safeguard of animal welfare depends in large part on the professional skills of personnel in charge of their care and use...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29709625/dynamic-functional-connectivity-markers-of-objective-trait-mindfulness
#14
Julian Lim, James Teng, Amiya Patanaik, Jesisca Tandi, Stijn A A Massar
While mindfulness is commonly viewed as a skill to be cultivated through practice, untrained individuals can also vary widely in dispositional mindfulness. Prior research has identified static neural connectivity correlates of this trait. Here, we use dynamic functional connectivity (DFC) analysis of resting-state fMRI to study time-varying connectivity patterns associated with naturally varying and objectively measured trait mindfulness. Participants were selected from the top and bottom tertiles of performers on a breath-counting task to form high trait mindfulness (HTM; N = 21) and low trait mindfulness (LTM; N = 18) groups...
April 27, 2018: NeuroImage
https://www.readbyqxmd.com/read/29697180/planar-perovskite-solar-cells-with-high-open-circuit-voltage-containing-a-supramolecular-iron-complex-as-hole-transport-material-dopant
#15
Yasemin Saygili, Silver-Hamill Turren-Cruz, Selina Olthof, Bartholomeus Wilhelmus Henricus Saes, Ilknur Bayrak Pehlivan, Michael Saliba, Klaus Meerholz, Tomas Edvinsson, Shaik M Zakeeruddin, Michael Grätzel, Juan-Pablo Correa-Baena, Anders Hagfeldt, Marina Freitag, Wolfgang Tress
In perovskite solar cells (PSCs), the most commonly used hole transport material (HTM) is spiro-OMeTAD, which is typically doped by metalorganic complexes, for example, based on Co, to improve charge transport properties and thereby enhance the photovoltaic performance of the device. In this study, we report a new hemicage-structured iron complex, 1,3,5-tris(5'-methyl-2,2'-bipyridin-5-yl)ethylbenzene Fe(III)-tris(bis(trifluoromethylsulfonyl)imide), as a p-type dopant for spiro-OMeTAD. The formal redox potential of this compound was measured as 1...
April 26, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/29691767/prognostic-impact-of-final-kissing-balloon-technique-after-crossover-stenting-for-the-left-main-coronary-artery-from-the-aoi-lmca-registry
#16
Koji Nishida, Mamoru Toyofuku, Takeshi Morimoto, Masanobu Ohya, Yasushi Fuku, Hirooki Higami, Kyohei Yamaji, Hiromi Muranishi, Yuhei Yamaji, Daisuke Furukawa, Tomohisa Tada, Euihong Ko, Kazushige Kadota, Kenji Ando, Hiroki Sakamoto, Takashi Tamura, Kazuya Kawai, Takeshi Kimura
It is still uncertain whether the final kissing balloon technique (FKBT) is mandatory after crossover stenting for the left main coronary artery (LMCA). Assessing Optimal Percutaneous Coronary Intervention for LMCA (AOI-LMCA) registry, a 6-center retrospective registry, enrolled 1809 consecutive patients for LMCA stenting in Japan. In the present analysis, 5-year clinical outcomes were compared between non-FKBT (n = 160) and FKBT (n = 578) groups in patients treated with crossover stenting with drug-eluting stents from the LMCA to the left anterior descending artery...
April 24, 2018: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/29679170/light-localization-with-low-contrast-targets-in-a-patient-implanted-with-a-suprachoroidal-transretinal-stimulation-retinal-prosthesis
#17
Takao Endo, Takashi Fujikado, Masakazu Hirota, Hiroyuki Kanda, Takeshi Morimoto, Kohji Nishida
PURPOSE: To evaluate the improvement in targeted reaching movements toward targets of various contrasts in a patient implanted with a suprachoroidal-transretinal stimulation (STS) retinal prosthesis. METHODS: An STS retinal prosthesis was implanted in the right eye of a 42-year-old man with advanced Stargardt disease (visual acuity: right eye, light perception; left eye, hand motion). In localization tests during the 1-year follow-up period, the patient attempted to touch the center of a white square target (visual angle, 10°; contrast, 96, 85, or 74%) displayed at a random position on a monitor...
April 20, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29677358/lysophosphatidic-acid-induces-ecm-production-via-activation-of-the-mechanosensitive-yap-taz-transcriptional-pathway-in-trabecular-meshwork-cells
#18
Leona T Y Ho, Nikolai Skiba, Christoph Ullmer, Ponugoti Vasantha Rao
Purpose: Lysophosphatidic acid (LPA), a bioactive lipid, has been shown to increase resistance to aqueous humor outflow (AH) through the trabecular meshwork (TM). The molecular basis for this response of the TM to LPA, however, is not completely understood. In this study, we explored the possible involvement of mechanosensitive Yes-associated protein (YAP) and its paralog, transcriptional coactivator with PDZ-binding domain (TAZ), transcriptional activation in extracellular matrix (ECM) production by LPA-induced contractile activity in human TM cells (HTM)...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677344/interaction-between-pilocarpine-and-ripasudil-on-intraocular-pressure-pupil-diameter-and-the-aqueous-outflow-pathway
#19
Reiko Yamagishi-Kimura, Megumi Honjo, Takashi Komizo, Takashi Ono, Akiko Yagi, Jinhee Lee, Kazunori Miyata, Tomokazu Fujimoto, Toshihiro Inoue, Hidenobu Tanihara, Junko Nishida, Takatoshi Uchida, Yuka Araki, Makoto Aihara
Purpose: To explore interactions between pilocarpine and the ROCK inhibitor, ripasudil, on IOP and pupil diameter in human eyes, and morphological and functional changes in outflow tissues in vitro. Methods: IOP and pupil diameter were measured after pilocarpine and/or ripasudil, which were topically applied in healthy subjects. Human trabecular meshwork (HTM) cells were used in a gel contraction assay, for the evaluation of phosphorylation of myosin light chain and cofilin, and immunostaining for cytoskeletal proteins...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29624381/disodium-benzodipyrrole-sulfonate-as-neutral-hole-transporting-materials-for-perovskite-solar-cells
#20
Rui Shang, Zhongmin Zhou, Hiroki Nishioka, Henry Halim, Shunsuke Furukawa, Izuru Takei, Naoya Ninomiya, Eiichi Nakamura
Hole-transporting material (HTM) is an indispensable constituent in organic electronic devices, generally comprising a donor/dopant combination. We report that a disodium salt of substituted benzo[1,2- b:4,5- b']dipyrrole bearing two racemic alkanediylsulfonate anion side chains (BDPSOs) serves as a neutral, nonhygroscopic, dopant-free HTM for lead perovskite (MAPbI3 ) solar cells. These organic/inorganic hybrid molecules are useful for tunable orbital level and controllable solubility. A fluorinated BDPSO has an energy level matched with MAPbI3 , affording an inverted-structure solar cell that performs with 17...
April 6, 2018: Journal of the American Chemical Society
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