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https://www.readbyqxmd.com/read/28440072/efficient-bulk-heterojunction-ch3nh3pbi3-tio2-solar-cells-with-tio2-nanoparticles-at-grain-boundaries-of-perovskite-by-multi-cycle-coating-strategy
#1
Jun Shao, Songwang Yang, Yan Liu
A novel bulk heterojunction (BHJ) perovskite solar cell (PSC), where the perovskite grains act as donor and the TiO2 nanoparticles act as acceptor, is reported. This efficient BHJ PSC was simply solution-processed from a mixing precursor of CH3NH3PbI3 (MAPbI3) and TiO2 nanoparticles. With dissolution and recrystallization by multi-cycle-coating, a unique composite structure ranging from a MAPbI3-TiO2-dominated layer on the substrate side to a pure perovskite layer on the top side is formed, which is beneficial for the blocking of possible contact between TiO2 and hole transport material on the interface...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28439942/assessment-of-motion-of-colonic-contents-in-the-human-colon-using-mri-tagging
#2
S E Pritchard, J Paul, G Major, L Marciani, P A Gowland, R C Spiller, C L Hoad
BACKGROUND: We have previously reported a non-invasive, semi-automated technique to assess motility of the wall of the ascending colon (AC) using Magnetic Resonance Imaging. This study investigated the feasibility of using a tagged MRI technique to visualize and assess the degree of flow within the human ascending colon in healthy subjects and those suffering from constipation. METHODS: An open-labeled study of 11 subjects with constipation and 11 subjects without bowel disorders was performed...
April 25, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28436268/collateral-circulation-alters-downstream-hemodynamic-stress-caused-by-intracranial-atherosclerotic-stenosis
#3
Xin Liu, David Dornbos, Yuehua Pu, Xinyi Leng, Ligang Song, Baixue Jia, Yuesong Pan, David Wang, Zhongrong Miao, Yilong Wang, Liping Liu, Yongjun Wang
OBJECTIVES: Fractional flow reserve (FFR) accurately predicts the degree of stenosis and is now widely used to identify clinically significant severe coronary artery lesions. In the current study, we utilized a similar indicator, fractional flow (FF), to determine the hemodynamic impact of symptomatic intracranial atherosclerotic stenosis (ICAS) and to assess the correlation of FF with the severity of stenosis and collateral circulation. METHODS: Patients with symptomatic ICAS (70-99% stenosis) confirmed on digital subtraction angiography (DSA) were consecutively recruited...
April 23, 2017: Neurological Research
https://www.readbyqxmd.com/read/28433455/peritoneal-fluid-localization-on-fast-examination-in-the-pediatric-trauma-patient
#4
Timothy E Brenkert, Cynthia Adams, Rebecca L Vieira, Rachel G Rempell
OBJECTIVE: To determine the location of intraperitoneal free fluid on FAST exam in pediatric patients undergoing evaluation for trauma. METHODS: Retrospective review of all FAST exams positive for intraperitoneal free fluid performed in patients sustaining trauma between August 2009 and February 2016 in an urban pediatric emergency department. Positive results were categorized into one of nine potential intraperitoneal locations; 4 each in the right and left upper quadrants, and the pelvis...
April 14, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28432947/pretreatment-of-eucalyptus-in-biphasic-system-for-furfural-production-and-accelerated-enzymatic-hydrolysis
#5
Xiudong Zhang, Yuanyuan Bai, Xuefei Cao, Runcang Sun
Herein, an efficient biphasic pretreatment process was developed to improve the production of furfural (FF) and glucose from Eucalyptus. The influence of formic acid and NaCl on FF production from xylose in water and various biphasic systems was investigated. Results showed that the addition of formic acid and NaCl significantly promoted the FF yield, and the biphasic system of MIBK (methyl isobutyl ketone)/water exhibited the best performance for FF production. Then the Eucalyptus was pretreated in the MIBK/water system, and a maximum FF yield of 82...
April 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28431818/the-comparison-of-point-of-care-ultrasonography-and-radiography-in-the-diagnosis-of-tibia-and-fibula-fractures
#6
Nalan Kozaci, Mehmet Oguzhan Ay, Mustafa Avci, Sadullah Turhan, Eda Donertas, Ahmet Celik, Ertan Ararat, Emrah Akgun
OBJECTIVE: We aimed to compare the efficacy of Point-of-care ultrasonography (POCUS) with radiography in the diagnosis of tibia fracture (TF) and fibula fracture (FF), and determation of fracture characteristics. METHODS: Patients aged 5-55 years who were admitted to ED due to low-energy, simple extremity trauma, who had a suspected TF and FF on physical examination were included in this prospective study. One physician performed POCUS examination. Other physician evaluated the radiography images...
April 13, 2017: Injury
https://www.readbyqxmd.com/read/28429762/annealing-induced-re-crystallization-in-ch3nh3pbi3-xclx-for-high-performance-perovskite-solar-cells
#7
Yingguo Yang, Shanglei Feng, Meng Li, Weidong Xu, Guangzhi Yin, Zhaokui Wang, Baoquan Sun, Xingyu Gao
Using poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) as hole conductor, a series of inverted planar CH3NH3PbI3-xClx perovskite solar cells (PSCs) were fabricated based on perovskite annealed by an improved time-temperature dependent (TTD) procedure in a flowing nitrogen atmosphere for different time. Only after an optimum annealing time, an optimized power conversion efficiency of 14.36% could be achieved. To understand their performance dependence on annealing time, an in situ real-time synchrotron-based grazing incidence X-ray diffraction (GIXRD) was used to monitor a step-by-step gradual structure transformation from distinct mainly organic-inorganic hybrid materials into highly ordered CH3NH3PbI3 crystal during annealing...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428942/follicular-fluid-cerebellin-and-betatrophin-regulate-the-metabolic-functions-of-growing-follicles-in-polycystic-ovary-syndrome
#8
Aynur Adeviye Ersahin, Mustafa Acet, Suat Suphan Ersahin, Tuba Acet, Meltem Yardim, Omer Kenanoglu, Suleyman Aydin
OBJECTIVE: The aim of this study was to assess the changes of follicular fluid (FF) and serum levels of cerebellin precursor protein 1 (cbln1) and betatrophin in patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) with a gonadotropin-releasing hormone (GnRH) antagonist protocol. METHODS: Twenty infertile women with PCOS and 20 control women diagnosed as poor responders undergoing ovarian stimulation with a GnRH antagonist were included...
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28427541/long-term-safety-and-efficacy-of-glycopyrrolate-formoterol-metered-dose-inhaler-using-novel-co-suspension%C3%A2-delivery-technology-in-patients-with-chronic-obstructive-pulmonary-disease
#9
Nicola A Hanania, Donald P Tashkin, Edward M Kerwin, James F Donohue, Michael Denenberg, Denis E O'Donnell, Dean Quinn, Shahid Siddiqui, Chad Orevillo, Andrea Maes, Colin Reisner
BACKGROUND: The long-term safety and efficacy of a novel Co-Suspension™ Delivery Technology glycopyrrolate (GP)/formoterol fumarate (FF) 18/9.6 μg fixed-dose combination metered dose inhaler (GFF MDI) were investigated in a 28-week safety extension study (PINNACLE-3, NCT01970878) of two randomized controlled Phase III trials (PINNACLE-1 and -2; NCT01854645 and NCT01854658) in subjects with moderate-to-very severe chronic obstructive pulmonary disease (COPD). METHODS: Subjects completing 24 weeks' treatment with GFF MDI, GP MDI, FF MDI (all twice-daily) or open-label tiotropium 18 μg (once-daily) in PINNACLE-1 or -2 were randomly selected to continue treatment for 28 weeks...
May 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28426559/ct-evidence-of-fluid-in-the-hernia-sac-predicts-surgical-site-infection-following-mesh-repair-of-acutely-incarcerated-ventral-and-groin-hernias
#10
Tyler J Loftus, Kristina L Go, Janeen R Jordan, Chasen A Croft, R Stephen Smith, Frederick A Moore, Philip A Efron, Alicia M Mohr, Scott C Brakenridge
BACKGROUND: Mesh placement during repair of acutely incarcerated ventral and groin hernias is associated with high rates of surgical site infection (SSI). The utility of preoperative CT in this setting is unclear. We hypothesized that CT evidence of bowel wall compromise would predict SSI while accounting for physiologic parameters. METHODS: We performed a four-year retrospective cohort analysis of 50 consecutive patients who underwent mesh repair of acutely incarcerated ventral or groin hernias...
April 20, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28426040/enhancement-of-the-hole-conducting-effect-of-nio-by-a-n2-blow-drying-method-in-printable-perovskite-solar-cells-with-low-temperature-carbon-as-the-counter-electrode
#11
T A Nirmal Peiris, Ajay K Baranwal, Hiroyuki Kanda, Shota Fukumoto, Shusaku Kanaya, Ludmila Cojocaru, Takeru Bessho, Tsutomu Miyasaka, Hiroshi Segawa, Seigo Ito
In this article, we demonstrate for the first time a mesoscopic printable perovskite solar cell (PSC) using NiO as the hole transporting material and low-temperature processed carbon as the counter electrode. A single deposition method assisted by N2 blow drying was used for the deposition of MAPbI3 on a TiO2/ZrO2/NiO screen-printed electrode. As the final step a low-temperature processing (i.e. 75 °C) carbon counter layer was fabricated on MAPbI3 by a blade coating method. It is found that the capping layer thickness of MAPbI3 has a significant effect on the device efficiency, especially when NiO is introduced as a hole transporting material into the structure...
April 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28425933/study-on-the-rationality-for-antiviral-activity-of-flos-lonicerae-japonicae-fructus-forsythiae-herb-chito-oligosaccharide-via-integral-pharmacokinetics
#12
Wei Zhou, Ailing Yin, Jinjun Shan, Shouchuan Wang, Baochang Cai, Liuqing Di
In the present study, the rationality for the antiviral effect (H1N1 virus) of Flos Lonicerae Japonicae (FLJ, named JinYinHua)-Fructus forsythiae (FF, named LianQiao) herb couple preparations improved by chito-oligosaccharide (COS) was investigated. We found that the improvement of antiviral activity for four preparations attributed to the enhancement of bioavailability for the FLJ-FF herb couple in vivo, and that caffeic acid derivatives are the most important type of components for antiviral activity. The anti-Influenza virus activity-half maximal inhibitory concentration (IC50), not area under concentration (AUC) was considered as the weighting factor for integrating the pharmacokinetics of caffeic acid derivatives...
April 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28422335/effect-of-isomeric-structures-on-photovoltaic-performance-of-d-a-copolymers
#13
Fangyuan Xie, Dan He, Han Pan, Jiaxing Jiang, Liming Ding
Two donor-acceptor copolymers based on isomeric acceptor units, [7,7'-bithieno[2',3':4,5]thieno[2,3-d]thieno[3,2-b]pyridine]-5,5'(4H,4'H)-dione (BTTP) and [2,2'-bithieno[2',3':4,5]thieno[2,3-d]thieno[3,2-b]pyridine]-5,5'(4H,4'H)-dione (iBTTP), are developed to study the effect of isomeric structures on photovoltaic performance. Compared with PBDTBTTP, PBDTiBTTP possesses a smaller bandgap for good light harvesting and a better π-π stacking for higher hole mobility. PBDTiBTTP solar cells present balanced mobilities and good nanoscale phase separation, giving a power conversion efficiency (PCE) of 6...
April 19, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28420500/does-different-bmi-influence-oocyte-and-embryo-quality-by-inducing-fatty-acid-in-follicular-fluid
#14
Parvaneh Mirabi, Mohammad Javad Chaichi, Sedighe Esmaeilzadeh, Seyed Gholam Ali Jorsaraei, Ali Bijani, Mahjobeh Ehsani
OBJECTIVE: We aimed to assess the effects of obesity-related follicular fluid (FF) fatty acids (FAs) on the number and quality of oocytes, good embryo quality rate, and pregnancy rate. MATERIALS AND METHODS: This prospective cohort study was conducted on 105 infertile women under the age of 38, who underwent intracytoplasmic sperm injection (ICSI) from March 2015 to October 2015. They were grouped into three body mass index (BMI) categories. The fatty acids composition of the FF was analyzed by GC-MS head space method...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28417352/follicular-adamts-1-and-aggrecan-levels-in-polycystic-ovary-syndrome
#15
Esra Nur Tola, Dilek Ulusoy Karatopuk, Nadiye Koroglu, Merve Ergin, Hilmi Baha Oral
PURPOSE: Polycystic ovary syndrome (PCOS) is the most common cause of ovulatory dysfunction and female infertility. The etiopathogenetic mechanisms of PCOS have been studied for many years, although exact causes remain unclear. It has been demonstrated that proteoglycan degradation by a disintegrin-like metalloproteinase with thrombospondin type motifs-1 (ADAMTS-1) is essential for ovulation and fertilization. The objective of our study is to analyze the levels of ADAMTS-1 and aggrecan in the follicular fluid (FF) of PCOS patients compared with normal ovulatory women and to determine whether these markers could be a predictor of in vitro fertilization (IVF) success in PCOS patients...
April 17, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28416587/cardiovascular-outcomes-with-an-inhaled-beta2-agonist-corticosteroid-in-patients-with-copd-at-high-cardiovascular-risk
#16
Robert D Brook, Julie A Anderson, Peter Ma Calverley, Bartolome R Celli, Courtney Crim, Martin A Denvir, Sheldon Magder, Fernando J Martinez, Sanjay Rajagopalan, Jørgen Vestbo, Julie Yates, David E Newby
OBJECTIVES: Cardiovascular disease (CVD) and chronic obstructive pulmonary disease (COPD) often coexist. We assessed the effect of inhaled COPD treatments on CVD outcomes and safety in patients with COPD and at heightened CVD risk. METHODS: The SUMMIT (Study to Understand Mortality and MorbidITy) was a multicentre, randomised, double-blind, placebo-controlled, event-driven trial in 16 485 patients with moderate COPD who had or were at high risk of CVD. Here, we assessed the prespecified secondary endpoint of time to first on-treatment composite CVD event (CVD death, myocardial infarction, stroke, unstable angina or transient ischaemic attack (TIA)) by Cox regression and by clinician-reported CVD adverse events across the four groups: once-daily inhaled placebo (n=4111), long-acting beta2-agonist (vilanterol (VI) 25 µg; n=4118), corticosteroid (fluticasone furoate (FF) 100 µg; n=4135) and combination therapy (FF/VI; n=4121)...
April 17, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28416223/study-on-emission-of-hazardous-trace-elements-in-a-350%C3%A2-mw-coal-fired-power-plant-part-2-arsenic-chromium-barium-manganese-lead
#17
Shilin Zhao, Yufeng Duan, Lei Chen, Yaning Li, Ting Yao, Shuai Liu, Meng Liu, Jianhong Lu
Hazardous Trace elements (HTEs) emitted from coal combustion has raised widespread concern. Studies on the emission characteristics of five HTEs, namely arsenic (As), chromium (Cr), barium (Ba), manganese (Mn), lead (Pb) at three different loads (100%, 83%, 71% output) and different coal types were performed on a 350 MW coal-fired power plant equipped with SCR, ESP + FF, and WFGD. HTEs in the flue gas at the inlet/outlet of each air pollution control device (APCD) were sampled simultaneously based on US EPA Method 29...
April 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28416041/child-targeted-fast-food-television-advertising-exposure-is-linked-with-fast-food-intake-among-pre-school-children
#18
Madeline A Dalton, Meghan R Longacre, Keith M Drake, Lauren P Cleveland, Jennifer L Harris, Kristy Hendricks, Linda J Titus
OBJECTIVE: To determine whether exposure to child-targeted fast-food (FF) television (TV) advertising is associated with children's FF intake in a non-experimental setting. DESIGN: Cross-sectional survey conducted April-December 2013. Parents reported their pre-school child's TV viewing time, channels watched and past-week FF consumption. Responses were combined with a list of FF commercials (ads) aired on children's TV channels during the same period to calculate children's exposure to child-targeted TV ads for the following chain FF restaurants: McDonald's, Subway and Wendy's (MSW)...
April 18, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28415502/antimicrobial-textiles-biogenic-silver-nanoparticles-against-candida-and-xanthomonas
#19
Daniela Ballottin, Stephanie Fulaz, Flávia Cabrini, Junko Tsukamoto, Nelson Durán, Oswaldo L Alves, Ljubica Tasic
This paper introduces cotton fibers impregnated with biogenic silver nanoparticles (AgNPs), synthesized from a Fusarium oxysporum fungal filtrate (FF) solution, and open up the possibility for their use in medical environment and agriculture clothing as means to avoid microbial spreading. After thorough AgNPs characterization, regarding their physical, chemical and biochemical properties, Minimum Inhibitory Concentrations (MIC) against some human and orange tree pathogens were determined. We report the strong AgNPs activity against Candida parapsilosis and Xanthomonas axonopodis pv...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415339/fast-forward-to-the-classical-adiabatic-invariant
#20
Christopher Jarzynski, Sebastian Deffner, Ayoti Patra, Yiğit Subaşı
We show how the classical action, an adiabatic invariant, can be preserved under nonadiabatic conditions. Specifically, for a time-dependent Hamiltonian H=p^{2}/2m+U(q,t) in one degree of freedom, and for an arbitrary choice of action I_{0}, we construct a so-called fast-forward potential energy function V_{FF}(q,t) that, when added to H, guides all trajectories with initial action I_{0} to end with the same value of action. We use this result to construct a local dynamical invariant J(q,p,t) whose value remains constant along these trajectories...
March 2017: Physical Review. E
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