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https://www.readbyqxmd.com/read/28718618/graphene-oxide-by-uv-ozone-treatment-as-efficient-hole-extraction-layer-for-highly-efficient-and-stable-polymer-solar-cells
#1
Yingdong Xia, Yufeng Pan, Haijuan Zhang, Jian Qiu, Yiting Zheng, YongHua Chen, Wei Huang
Hole extraction layer has significant impact on achieving high-efficiency polymer solar cells (PSCs). Here, we report an efficient approach to by direct UV-Ozone treatment larger device performance enhancement employing grapheme oxide (GO). The dramatically performance enhancement of PSCs with P3HT:PCBM blend as an active layer was demonstrated by UV-Ozone treated GO for 30 min: best PCE of 4.18%, FF of 0.63, Jsc of 10.94 mA cm-2, and Voc of 0.61 V, which is significantly higher than the untreated GO (1.82%) and highly comparable PEDOT:PSS-based PSCs (3...
July 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28711985/higher-rates-of-dz-twinning-in-a-twenty-first-century-birth-cohort
#2
Sally Ann Rhea, Robin P Corley, Andrew C Heath, William G Iacono, Michael C Neale, John K Hewitt
The Colorado Twin Registry is a population based registry initiated in 1984 with the involvement of the Colorado Department of Health, Division of Vital Statistics. Recruitment includes birth cohorts several years prior to 1984 and all subsequent years. As part of a recent evaluation of Colorado birth records for the years 2006 through 2008 we became aware of a shifting trend in the proportion of MZ and DZ twins in the Colorado population. Historically (Bulmer 1970 The biology of twinning in man, Clarendon, Oxford) we have expected a 1/3, 1/3, 1/3 ratio of MZ, same-sex DZ and opposite sex DZ twins in Caucasian populations...
July 15, 2017: Behavior Genetics
https://www.readbyqxmd.com/read/28711479/identification-of-the-suitable-leaf-margin-for-liver-stereotactic-body-radiotherapy-with-flattening-filter-free-beams
#3
Toshiyuki Ogata, Hideki Nishimura, Hiroshi Mayahara, Kazuyuki Uehara, Takanobu Okayama
The purpose of this study is to identify the suitable leaf margin for liver stereotactic body radiotherapy (SBRT) with flattening filter-free (FFF) beams, as compared with that with flattening filter (FF) beams. SBRT treatment planning for 10 patients with liver cancer was performed using 10-MV FFF and FF beams obtained from a Varian TrueBeam (Varian Medical Systems, Palo Alto, CA) linear accelerator. Each plan was generated with the leaf margin to the planning target volume (PTV) ranging from -3 to 5 mm...
July 12, 2017: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
https://www.readbyqxmd.com/read/28707990/clinical-usefulness-of-the-mdixon-quant-the-method-for-estimation-of-the-salivary-gland-fat-fraction-comparison-with-mr-spectroscopy
#4
Yoshitaka Kise, Toru Chikui, Yasuo Yamashita, Koji Kobayashi, Kazunori Yoshiura
OBJECTIVES: To estimate the fat fraction (FF) in the salivary glands (SGs) by the mDIXON method and the MRS method, and to compared the results. METHODS: Sixteen healthy volunteers were enrolled. mDIXON Quant and MRS (point-resolved spectroscopy: PRESS) with a single TE were employed to measure the FF in the parotid gland (PG) and submandibular gland (SMG). Multiple TEs were applied in 10 volunteers to correct for T2 decay. In addition, we assumed that the 1.3 ppm peak accounted for 60% of the total fat peak and estimated the FF (MRS all) as a gold standard...
July 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28706351/beam-characterization-of-10-mv-photon-beam-from-medical-linear-accelerator-without-flattening-filter
#5
Tomohiro Shimozato, Yuichi Aoyama, Takuma Matsunaga, Katsuyoshi Tabushi
AIM: This work investigated the dosimetric properties of a 10-MV photon beam emitted from a medical linear accelerator (linac) with no flattening filter (FF). The aim of this study is to analyze the radiation fluence and energy emitted from the flattening filter free (FFF) linac using Monte Carlo (MC) simulations. MATERIALS AND METHODS: The FFF linac was created by removing the FF from a linac in clinical use. Measurements of the depth dose (DD) and the off-axis profile were performed using a three-dimensional water phantom with an ionization chamber...
April 2017: Journal of Medical Physics
https://www.readbyqxmd.com/read/28702816/enhancing-the-solubility-of-fenofibrate-by-nanocrystal-formation-and-encapsulation
#6
Raj Kumar, Prem Felix Siril
Development of techniques to enhance bioavailability of drugs having poor water solubility is a big challenge for pharmaceutical industry. Solubility can be enhanced by particle size reduction and encapsulation using hydrophilic polymers. Fenofibrate (FF) is a drug for regulating lipids. Multi-fold enhancement in solubility of FF has been achieved by nanocrystal formation in the present study. Nanoparticles were prepared by an evaporation-assisted solvent-antisolvent interaction (EASAI) approach. Water-soluble polymers, viz...
July 12, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28701210/follicular-fluid-redox-involvement-for-ovarian-follicle-growth
#7
REVIEW
Cláudia Freitas, Ana Catarina Neto, Liliana Matos, Elisabete Silva, Ângela Ribeiro, João Luís Silva-Carvalho, Henrique Almeida
As the human ovarian follicle enlarges in the course of a regular cycle or following controlled ovarian stimulation, the changes in its structure reveal the oocyte environment composed of cumulus oophorus cells and the follicular fluid (FF).In contrast to the dynamic nature of cells, the fluid compartment appears as a reservoir rich in biomolecules. In some aspects, it is similar to the plasma, but it also exhibits differences that likely relate to its specific localization around the oocyte. The chemical composition indicates that the follicular fluid is able to detect and buffer excessive amounts of reactive oxygen species, employing a variety of antioxidants, some of them components of the intracellular milieu...
July 12, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28700209/silicotungstate-a-potential-electron-transporting-layer-for-low-temperature-perovskite-solar-cells
#8
Yoon Ho Choi, Hyun Bin Kim, In Seok Yang, Sang Do Sung, Young Sik Choi, Jeongho Kim, Wan In Lee
Thin films of a heteropolytungstate, lithium silicotungstate (Li4SiW12O40, termed Li-ST), prepared by a solution process at low temperature, were successfully applied as electron transporting layer (ETL) of planar-type perovskite solar cells (PSCs). Dense and uniform Li-ST films were prepared on the FTO glass by depositing a thin Li-ST buffer layer, followed by coating of a main Li-ST layer. The film thickness was controlled by varying the number of coating cycles, consisting of spin-coating and thermal treatment at 150(o)C...
July 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28698097/enzymatic-reactive-oxygen-species-assay-to-evaluate-phototoxic-risk-of-metabolites
#9
Masashi Kato, Hiroto Ohtake, Hideyuki Sato, Yoshiki Seto, Satomi Onoue
The present study aimed to verify the feasibility of an enzymatic reactive oxygen species (eROS) assay to evaluate the phototoxic risk of compounds after their metabolization. The eROS assay was designed based on the combined use of an in vitro drug metabolism system and a ROS assay. The incubation time of compounds with human hepatic S9 fractions was optimized with the use of fenofibrate (FF), a typical phototoxicant with metabolite-related phototoxicity, and the reproducibility and robustness of the eROS assay were examined using FF...
July 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28696790/competitive-inhibition-of-amino-acid-transport-in-human-preovulatory-ovarian-follicles
#10
Maciej Jóźwik, Marcin Jóźwik, Anna Justyna Milewska, Frederick C Battaglia, Michał Jóźwik
To date we have yet to examine whether amino acid (AA) transport in human ovarian follicles is affected by competitive inhibition. In contrast, transplacental transfer of AAs in late-gestation sheep is characterized by reciprocal competition. This phenomenon has been described by algebraic equations of umbilical uptake of AAs based on maternal arterial concentrations. In the present translational study at a university teaching hospital, we verified whether these equations apply to the transport of AAs from blood to follicular fluid (FF) in human preovulatory follicles...
July 11, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28694060/temporal-growth-and-spatial-distribution-of-the-fast-food-industry-and-its-relationship-with-economic-development-in-china-2005-2012
#11
Hong Xue, Xi Cheng, Qi Zhang, Huijun Wang, Bing Zhang, Weidong Qu, Youfa Wang
The fast food (FF) industry has expanded rapidly in China during the past two decades, in parallel with an increase in the prevalence of obesity. Using government-reported longitudinal data from 21 provinces and cities in China, this study examined the growth over time and the spatial distribution patterns of the FF industry as well as the key social economic factors involved. We visualized the temporal and geographic distributions of FF industry development and conducted cross-sectional and longitudinal spatial analysis to assess associations between macroeconomic conditions, population dynamics, and the growth and distributional changes of the industry...
July 8, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28692805/stability-scale-up-and-performance-of-quantum-dot-solar-cells-with-carbonate-treated-titanium-oxide-films
#12
P Naresh Kumar, Ankita Kolay, Melepurath Deepa, Sonnada Math Shivaprasad, Avanish Kumar Srivastava
A novel yet simple approach of carbonate (CBN) treatment of TiO2 films is performed, and quantum dot solar cells (QDSCs) with high power conversion efficiencies (PCEs), reasonably good stabilities, and good fill factors (FFs) are fabricated with TiO2-CBN films. The ability of carbonate groups to passivate defects or oxygen vacancies of TiO2 is confirmed from a nominally enhanced band gap, a lowered defect induced fluorescence intensity, an additional Ti-OH signal obtained after carbonate decomposition, and a more capacitive low frequency electrochemical impedance behavior achieved for TiO2-CBN compared to untreated TiO2...
July 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28687169/pitfalls-in-diagnosing-colon-cancer-on-abdominal-ct
#13
E Klang, M Eifer, U Kopylov, V Belsky, S Raskin, E Konen, M M Amitai
AIM: To assess the frequency of undetected colon cancer on conventional abdominal CT and to evaluate the imaging features that are characteristic of those cancers. MATERIALS AND METHODS: The present study included consecutive patients diagnosed with colorectal cancer at colonoscopy (2006-2015) who also underwent abdominal computed tomography (CT) performed for various reasons within a year prior to the colonoscopy. The frequency of undetected lesions was evaluated for the original CT interpretations ("original readers")...
July 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28686693/ivermectin-treatment-of-loa-loa-hyper-microfilaraemic-baboons-papio-anubis-assessment-of-microfilarial-loads-haematological-and-biochemical-parameters-and-histopathological-changes-following-treatment
#14
Samuel Wanji, Ebanga-Echi J Eyong, Nicholas Tendongfor, Che J Ngwa, Elive N Esuka, Arnaud J Kengne-Ouafo, Fabrice R Datchoua-Poutcheu, Peter Enyong, Dalen Agnew, Rob R Eversole, Adrian Hopkins, Charles D Mackenzie
BACKGROUND: Individuals with high intensity of Loa loa are at risk of developing serious adverse events (SAEs) post treatment with ivermectin. These SAEs have remained unclear and a programmatic impediment to the advancement of community directed treatment with ivermectin. The pathogenesis of these SAEs following ivermectin has never been investigated experimentally. The Loa/baboon (Papio anubis) model can be used to investigate the pathogenesis of Loa-associated encephalopathy following ivermectin treatment in humans...
July 7, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28684292/the-polymorphic-insertion-of-the-luteinizing-hormone-receptor-inslq-show-a-negative-association-to-lhr-gene-expression-and-to-the-follicular-fluid-hormonal-profile-in-human-small-antral-follicles
#15
T Borgbo, J Chrudimska, M Macek, J V Jeppesen, J A Bøtkjær, S G Kristensen, K T Macklon, E Ernst, L L Hansen, C Yding Andersen
The luteinizing hormone receptor (LHCGR) has a little studied polymorphic 6 bp insertion (rs4539842/insLQ). This study has evaluated the insLQ polymorphism in relation to potential associations with hormonal characteristics of human small antral follicles (hSAFs). In total, 310 hSAFs were collected from 86 women undergoing fertility preservation. Analysis included hormonal profile of 297 follicular fluid (FF) samples and 148 corresponding granulosa cells samples were evaluated by qPCR for selected genes. Significantly reduced and non-detectable mRNA levels of anti-Müllerian hormone receptor II (AMHR2) and LHCGR, respectively, were observed for insLQ/insLQ compared to -/insLQ and the -/- genotypes...
July 3, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28679448/simultaneous-integrated-boost-therapy-of-carcinoma-of-the-hypopharynx-larynx-with-and-without-flattening-filter-a-treatment-planning-and-dosimetry-study
#16
Barbara Dobler, Tina Obermeier, Matthias G Hautmann, Amine Khemissi, Oliver Koelbl
BACKGROUND: The aim of this study was to investigate if the flattening filter free (FFF) irradiation mode of a linear accelerator (linac) is advantageous as compared to the flat beam (FF) irradiation mode in intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) for carcinoma of the hypopharynx / larynx. METHODS: Four treatment plans were created for each of 10 patients for an Elekta Synergy linac with Agility collimating device, a dual arc VMAT and a nine field step and shoot IMRT each with and without flattening filter...
July 5, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28679080/renal-cystic-adenocarcinoma-in-a-flowerhorn-fish-with-metastatic-involvement-of-the-spleen
#17
Hooman Rahmati-Holasoo, Sara Shokrpoor, Majid Masoudifard, HosseinAli Ebrahimzadeh Mousavi, Ali Haddadi, Amir Tavakkoli
A 480 g flowerhorn fish hybrid cichlid with severe bilateral abdominal swelling, bulla-like structures on the skin, bilateral exophthalmia and prolapsed intestine was presented. Radiographs showed a compression of the posterior part of swim bladder and abdominal distention. Ultrasonography of visceral organs showed a heterogenous mass with hypo to anechoic polycystic parenchyma and free fluid in abdominal cavity. At necropsy free fluid in the abdominal cavity and a large polycystic mass, originating from the posterior kidney, was observed...
July 5, 2017: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/28675863/polychlorinated-biphenyls-in-nepalese-surface-soils-spatial-distribution-air-soil-exchange-and-soil-air-partitioning
#18
Ishwar Chandra Yadav, Ningombam Linthoingambi Devi, Jun Li, Gan Zhang
Regardless of the ban on the polychlorinated biphenyls (PCBs) decade ago, significant measures of PCBs are still transmitted from essential sources in cities and are all inclusive ecological contaminants around the world. In this study, the concentrations of PCBs in soil, the air-soil exchange of PCBs, and the soil-air partitioning coefficient (KSA) of PCBs were investigated in four noteworthy urban areas in Nepal. Overall, the concentrations of ∑30PCBs ranged from 10 to 59.4ng/g dry weight; dw (mean 12.2ng/g ±11...
July 1, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28674919/creating-diagnostic-criteria-for-perforated-appendicitis-using-cross-sectional-imaging
#19
Joseph T Church, Megan A Coughlin, Alexis G Antunez, Ethan A Smith, Steven W Bruch
INTRODUCTION: Preoperative determination of perforated versus acute appendicitis can be difficult. We compared CT and MRI performance in diagnosing perforated appendicitis, and created diagnostic criteria. METHODS: We retrospectively reviewed all pediatric patients who underwent appendectomy within one day of CT or MRI between 1/1/2013 and 1/16/2016. True diagnosis was determined by pathology report. Findings on CT/MRI were grouped into "hard" findings (abscess, pneumoperitoneum, extruded fecalith, appendiceal wall with visible hole) and "soft" findings (extensive/diffuse inflammation/free fluid, phlegmon)...
July 3, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28671255/maize-hybrid-stability-in-environments-under-water-restriction-using-mixed-models-and-factor-analysis
#20
A O Santos, J J Nuvunga, C P Silva, L P M Pires, R G Von Pinho, L J M Guimarães, M Balestre
In several crops, the water deficit is perhaps the main limiting factor in the search for high yields. The objective of this study was to evaluate the phenotypic stability of maize hybrids in environments with and without water restriction using the analytical factor (AF) approach. We evaluated 171 maize hybrids in 14 environments, divided into environments with (A1, A2, A3, A4, A5, A6, and A7) and without (A8, A9, A10, A11, A12, A13, and A14) water restriction, over a period of 7 years. Each year, 36 hybrids were evaluated...
June 29, 2017: Genetics and Molecular Research: GMR
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