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https://www.readbyqxmd.com/read/28930319/revealing-the-correlation-between-charge-carrier-recombination-and-extraction-in-an-organic-solar-cell-under-varying-illumination-intensity
#1
Abhishek Sharma, Mihirsinh Chauhan, Vishal Bharti, Manoj Kumar, Suresh Chand, Brijesh Tripathi, J P Tiwari
The design and fabrication of better excitonic solar cells are the need of the hour for futuristic energy solutions. This designing needs a better understanding of the charge transport properties of excitonic solar cells. One of the popular methods of understanding the charge transport properties is the analysis of the J-V characteristics of a device through theoretical simulation at varied illumination intensity. Herein, a J-V characteristic of a polymer:fullerene based bulk heterojunction (BHJ) organic solar cells (OSCs) of structure ITO/PEDOT:PSS (∼40 nm)/PTB7:PC71BM (∼100 nm)/Al (∼120 nm) is analyzed using one- and two-diode models at varied illumination intensity in the range of 0...
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28926855/a-comparison-of-the-efficacy-of-once-daily-fluticasone-furoate-vilanterole-with-twice-daily-fluticasone-propionate-salmeterol-in-elderly-asthmatics
#2
Yoshihisa Ishiura, Masaki Fujimura, Yasutaka Shiba, Noriyuki Ohkura, Johsuke Hara, Miki Abo, Kazuo Kasahara
Background Asthma in the elderly population has been focused because it affects quality of life and results in a higher hospitalization rate and mortality. Fluticasone furoate (FF)/vilanterole (VI) is a novel inhaled corticosteroids (ICS)/long-acting β2 agonist (LABA) combination being developed for once-daily administration for asthma with greater anti-inflammatory activity and longer duration of bronchidilation. The Ellipta(TM) dry powder inhaler (DPI) has also been available as a new device with high levels of satisfaction and preference...
September 19, 2017: Drug Research
https://www.readbyqxmd.com/read/28924083/characterization-of-o-w-emulsions-prepared-by-peg-diisostearate-amphiphilic-random-copolymer
#3
Megumi Kaji, Sari Fujiwara, Kenichi Sakai, Hideki Sakai
We have characterized an emulsion system stabilized by an amphiphilic random copolymer, methoxy polyethylene glycol-23 methacrylate/glyceryl diisostearate methacrylate copolymer (MPM-GDM). The combined results of the static surface tension and transmission electron microscopy with freeze-fracture technique (FF-TEM) suggested that this copolymer forms aggregates in aqueous solutions. The membrane emulsification method produced an oil-in-water (O/W) emulsion in the mixture of squalane, water, and MPM-GDM, where the squalane concentration was set at 10 - 60 wt% and the MPM-GDM concentration was either 1 or 5 wt%...
September 15, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28921741/chalcogen-atom-annulated-perylene-diimide-trimers-for-highly-efficient-nonfullerene-polymer-solar-cells
#4
Yuwei Duan, Xiaopeng Xu, Ying Li, Zuojia Li, Qiang Peng
This communication reports the synthesis of two novel chalcogen-atom-annulated perylene diimide (PDI) trimers with twisted structures, TriPDI-S and TriPDI-Se, for efficient nonfullerene polymer solar cells. TriPDI-Se exhibits more compact molecular arrangement due to the stronger intermolecular interactions induced by the selenium atom. This selenium annulation endows TriPDI-Se with improved absorption and crystallinity in its blend film. The resulting devices exhibit enhanced Jsc of 17.15 mA cm(-2) and fill factor (FF) of 66...
September 15, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28920548/target-range-of-motion-at-3-months-after-arthroscopic-rotator-cuff-repair-and-its-effect-on-the-final-outcome
#5
Hisahiro Tonotsuka, Hiroyuki Sugaya, Norimasa Takahashi, Nobuaki Kawai, Hajime Sugiyama, Keishi Marumo
PURPOSE: The postoperative protocol after arthroscopic rotator cuff repair (ARCR) is still controversial. Some surgeons recommend slower rehabilitation in order to improve the integrity of the repair, while others prefer early range-of-motion (ROM) exercise to avoid postoperative stiffness. The purpose of this study was to determine target ROM (T-ROM) measurements at 3 months after ARCR that are predictive of eventual full recovery without structural failure. METHODS: The cases consisted of 374 shoulders in 360 patients who underwent primary ARCR and were followed up for at least 2 years...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28920436/rational-design-of-solution-processed-ti-fe-o-ternary-oxides-for-efficient-planar-ch3nh3pbi3-perovskite-solar-cells-with-suppressed-hysteresis
#6
Xin Li, Feng Hao, Xingyue Zhao, Xuewen Yin, Zhibo Yao, Ying Guo, Heping Shen, Hong Lin
Electron extraction layer (EEL) plays a critical role in organometal-halide perovskite solar cells (PSCs) by determining the charge extraction and ultimately their power conversion efficiencies. Here, Ti-Fe-O ternary oxide was firstly demonstrated as an efficient EEL candidate in the planar PSC, showing superiority in multiple aspects including the intrinsic precursor stability, coverage on the substrates, electrical properties, and energy levels compared to the widely used TiOx and the pure FeOx. By varying Fe content from 0% to 100% in the Ti-Fe-O composite, the conductivities of the resultant compact layers were markedly improved, according to consistent results from conductive atomic force microscopy (CAFM) and linear sweep voltammetry (LSV) measurements...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28920131/reversible-causes-in-cardiovascular-collapse-at-the-emergency-department-using-ultrasonography-revive-us
#7
Mui Teng Chua, Gene Wh Chan, Win Sen Kuan
INTRODUCTION: Ultrasonographic evaluation of patients in cardiac arrest is currently not protocolised in the advanced cardiac life support (ACLS) algorithm. Potentially reversible causes may be identified using bedside ultrasonography that is ubiquitous in most emergency departments (EDs). This study aimed to evaluate the incidence of sonographically detectable reversible causes of cardiac arrest by incorporating an ultrasonography protocol into the ACLS algorithm. Secondary objectives include rates of survival to hospital admission, hospital discharge, and 30-day mortality...
August 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28919366/prevalence-and-risk-factors-for-fragility-fracture-in-systemic-mastocytosis
#8
Yannick Degboé, Marine Eischen, Delphine Nigon, Pol-André Apoil, Claire Mailhol, Emilie Tournier, Camille Laurent, Katia Hanssens, Olivier Hermine, Carle Paul, Michel Laroche, Cristina Bulai-Livideanu
OBJECTIVES: Systemic mastocytosis (SM) is characterized by the accumulation of mast cells in tissues other than the skin. Bone involvement although frequent has not been thoroughly evaluated. Primary objective was to determine risk factors associated with fragility fractures (FF) in SM. Secondary objectives were to evaluate the ability of bone marrow tryptase (BMT) level to identify patients with FF, and to describe bone involvement in SM. METHODS: We analyzed retrospectively all consecutive patients seen in our expert center, with a diagnosis of SM according to the 2001 WHO criteria, and with complete bone assessment...
September 14, 2017: Bone
https://www.readbyqxmd.com/read/28917844/comparison-of-chitosan-and-chitosan-nanoparticles-on-the-performance-and-charge-recombination-of-water-based-gel-electrolyte-in-dye-sensitized-solar-cells
#9
Malihe Khalili, Mohammad Abedi, Hossein Salar Amoli, Seyed Ahmad Mozaffari
In commercialization of liquid dye-sensitized solar cells (DSSCs), whose leakage, evaporation and toxicity of organic solvents are limiting factors, replacement of organic solvents with water-based gel electrolyte is recommended. This work reports on utilizing and comparison of chitosan and chitosan nanoparticle as different gelling agents in preparation of water-based gel electrolyte in fabrication of dye sensitized solar cells. All photovoltaic parameters such as open circuit voltage (Voc), fill factor (FF), short circuit current density (Jsc) and conversion efficiency (η) were measured...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28915010/molecular-engineering-for-enhanced-charge-transfer-in-thin-film-photoanode
#10
Jeong Soo Kim, Byung-Man Kim, Un-Young Kim, HyeonOh Shin, Jung Seung Nam, Deok-Ho Roh, Tae-Hyuk Kwon
We developed three types of dithieno[3,2-b;2',3'-d]thiophene (DTT)-based organic sensitizers for high-performance thin photoactive TiO2 films and investigate the simple but powerful molecular engineering of different types of bonding between the triarylamine electron donor and the conjugated DTT π-bridge by the introduction of single, double, and triple bonds. As a result, with only 1.3-μm transparent and 2.5-μm TiO2 scattering layers, the triple bond sensitizer (T-DAHTDTT) shows the highest power conversion efficiency (η = 8...
September 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28914052/co2-plasma-treated-tio2-film-as-an-effective-electron-transport-layer-for-high-performance-planar-perovskite-solar-cells
#11
Kang Wang, Wenjing Zhao, Jia Liu, Jinzhi Niu, Yucheng Liu, Xiaodong Ren, Jiangshan Feng, Zhike Liu, Jie Sun, Dapeng Wang, Shengzhong Frank Liu
Perovskite solar cells (PSCs) have received great attention due to their excellent photovoltaic properties especially for the comparable efficiency to silicon solar cells. The electron transport layer (ETL) is regarded as a crucial medium in transporting electrons and blocking holes for PSCs. In this study, CO2 plasma generated by plasma-enhanced chemical vapor deposition (PECVD) was introduced to modify the TiO2 ETL. The results indicated that CO2 plasma treated compact TiO2 layer exhibited better surface hydrophilicity, higher conductivity, and lower bulk defect state density in comparison with the pristine TiO2 film...
September 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28912491/meiotic-arrest-with-roscovitine-and-follicular-fluid-improves-cytoplasmic-maturation-of-porcine-oocytes-by-promoting-chromatin-de-condensation-and-gene-transcription
#12
Min Zhang, Chuan-Xin Zhang, Liu-Zhu Pan, Shuai Gong, Wei Cui, Hong-Jie Yuan, Wei-Ling Zhang, Jing-He Tan
The developmental capacity of in vitro matured oocytes is inferior to that of the in vivo matured ones due to insufficient cytoplasmic maturation. Although great efforts were made to accomplish better cytoplasmic maturation by meiotic arrest maintenance (MAM) before in vitro maturation (IVM), limited progress has been achieved in various species. This study showed that MAM of porcine oocytes was better achieved with roscovitine than with dibutyryl cyclic adenosine monophosphate (db-cAMP) or 3-isobutyl-1-methylxanthine...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912374/collagen-embedded-tumor-transplantations-in-xenopus-laevis-tadpoles
#13
Maureen Banach, Jacques Robert
The Xenopus laevis tadpole provides a valuable model for studying tumorigenesis and tumor immunity by intravital real-time microscopy. Using well-characterized thymic lymphoid tumor lines (15/0 and ff-2) that are transplantable into their compatible hosts (LG-15 isogenic clones and the F inbred strain, respectively), a system of semisolid tumor engraftment has been designed. Because these lymphoid tumor cell lines are not adherent and grow in suspension, they are first immobilized in a matrix of type I rat tail collagen before transplantation as a semisolid tumor graft under the transparent dorsal skin in the head region of a tadpole...
September 14, 2017: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/28905808/patient-with-metastatic-breast-cancer-presenting-as-acute-cholecystitis-with-one-year-survival-on-hormonotherapy
#14
Mateusz Zamkowski, Michał Kąkol, Wojciech Makarewicz, Jerzy Ropel, Maciej Bobowicz
Breast cancer has high metastatic potential with distant metastases involving mainly lungs, liver and bones. Less frequently it gives distant spread to other organs. Herein we would like to present a very rare case of an acute cholecystitis which turned out to be a metastatic breast cancer in previously healthy woman. A female patient, 64-years old, presented to the emergency department with symptoms of biliary colic and acute abdomen. During the emergency cholecystectomy, we diagnosed the gallbladder empyema with thickened wall...
August 31, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28902992/removal-of-antibiotic-florfenicol-by-sulfide-modi%C3%AF-ed-nanoscale-zero-valent-iron
#15
Zhen Cao, Xue Liu, Jiang Xu, Jing Zhang, Yi Yang, Jun Liang Zhou, Xinhua Xu, Gregory V Lowry
Florfenicol (FF, C12H14Cl2FNO4S), an emerging halogenated organic contaminant of concern was effectively degraded in water by sulfidized nanoscale zero-valent iron (S-nZVI). Sulfidized nZVI (62.5 m2 g-1) that was prepared using a one-step method resulted in small Fe0/Fe-sulfide particles that were more stable against aggregation than unsulfidized nZVI (10.2 m2 g-1). No obvious removal of FF was observed by unsulfidized nZVI. S-nZVI degraded FF, having a surface area normalized reaction rate constant of 3.1×10-4 L m-2 min-1...
September 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28902961/photoluminescence-of-diphenylalanine-peptide-nano-microstructures-from-mechanisms-to-applications
#16
REVIEW
Zhixing Gan, Hao Xu
Diphenylalanine (Phe-Phe, FF) molecules, which can self-assemble into highly ordered nano/microstructures, have increasingly aroused intense interests due to their special optical properties. In this review, recent advances in photoluminescence (PL) of supramolecular architectures of FF-based peptide and the underlying mechanisms are highlighted. Mainly deep ultraviolet emission at around 285 nm and/or blue emission at ≈450 nm are observed in various FF peptide structures and its derivatives, which are primarily interpreted by quantum confinement effects, shallow radiative traps, and electron delocalization via hydrogen bonds in β-sheet structures...
September 13, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28901775/synthesis-and-properties-of-quinoidal-fluorenofluorenes
#17
Joshua E Barker, Conerd K Frederickson, Michael H Jones, Lev N Zakharov, Michael M Haley
The synthesis and optoelectronic properties of 24 π-electron, formally antiaromatic fluoreno[3,2-b]fluorene and fluoreno[4,3-c]fluorene (FF), are presented. The solid-state structure of [4,3-c]FF along with computationally analogous molecules shows that the outer rings are aromatic while the central four rings possess a bond-localized 2,6-naphthoquinodimethane motif. The antiaromaticity and biradical character of the FFs is assessed computationally, the results of which indicate the dominance of the closed-shell ground state for these molecules...
September 13, 2017: Organic Letters
https://www.readbyqxmd.com/read/28898243/neoatherosclerosis-development-following-bioresorbable-vascular-scaffold-implantation-in-diabetic-and-non-diabetic-swine
#18
Nienke S van Ditzhuijzen, Mie Kurata, Mieke van den Heuvel, Oana Sorop, Richard W B van Duin, Ilona Krabbendam-Peters, Jurgen Ligthart, Karen Witberg, Magdalena Murawska, Brett Bouma, Martin Villiger, Hector M Garcia-Garcia, Patrick W Serruys, Felix Zijlstra, Gijs van Soest, Dirk-Jan Duncker, Evelyn Regar, Heleen M M van Beusekom
BACKGROUND: DM remains a risk factor for poor outcome after stent-implantation, but little is known if and how DM affects the vascular response to BVS. AIM: The aim of our study was to examine coronary responses to bioresorbable vascular scaffolds (BVS) in swine with and without diabetes mellitus fed a 'fast-food' diet (FF-DM and FF-NDM, respectively) by sequential optical coherence tomography (OCT)-imaging and histology. METHODS: Fifteen male swine were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28898045/impact-of-hetero-interfaces-in-solar-cells-using-znsnp2-bulk-crystals
#19
Shigeru Nakatsuka, Shunsuke Akari, Jakapan Chantana, Takashi Minemoto, Yoshitaro Nose
We report on the optimization of interface structure in ZnSnP2 solar cells. The effects of back electrode materials and related interface on photovoltaic performance were investigated. It was clarified that a conventional structure Mo/ZnSnP2 showed a schottky-behaviour, while an ohmic-behaviour was observed in the Cu/ZnSnP2 structure annealed at 300 °C. STEM-EDX analysis suggested that Cu-Sn-P ternary compound was formed at the interface. This compound is considered to play an important role to obtain the ohmic contact between ZnSnP2 and Cu...
September 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28895729/effect-of-non-fullerene-acceptors-side-chains-on-the-morphology-and-photovoltaic-performance-of-organic-solar-cells
#20
Cai'e Zhang, Shiyu Feng, Yahui Liu, Ran Hou, Zhe Zhang, Xinjun Xu, Youzhi Wu, Zhishan Bo
Three indacenodithieno[3,2-b]thiophene (IT) cored small molecular acceptors (ITIC-SC6, ITIC-SC8 and ITIC-SC2C6) were synthesized and the influence of side chains on their performances in solar cells was systematically probed. Our investigations have demonstrated the variation of side chains greatly affects the charge dissociation, charge mobility and morphology of the donor:acceptor blend films. ITIC-SC2C6 with four branched side chains showed improved solubility, which can ensure the polymer donor to form favourable fibrous nanostructure during the drying of the blend film...
September 12, 2017: ACS Applied Materials & Interfaces
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