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https://www.readbyqxmd.com/read/29667818/balancing-the-electron-and-hole-transfer-for-efficient-quantum-dot-light-emitting-diodes-by-employing-a-versatile-organic-electron-blocking-layer
#1
Xiao Jin, Chun Chang, Weifeng Zhao, Shujuan Huang, Xiaobing Gu, Qin Zhang, Feng Li, Yubao Zhang, Qinghua Li
The electron blocking layer (EBL) is important to balance the charge carrier transfer and achieve highly efficient quantum dot light-emitting diodes (QLEDs). Here we report the utilization of a soluble tert-butyldimethylsilyl chloride-modified poly(p-phenylene benzobisoxazole) (TBS-PBO) as an EBL for simultaneous good charge carrier transfer balance while maintaining high current density. We show that the versatile TBS-PBO blocks excess electron injection into the QDs, thus leading to better charge carrier transfer balance...
April 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29666419/efficient-white-phosphorescent-organic-light-emitting-diodes-using-ultrathin-emissive-layers-1-nm
#2
Haojian Yu, Xudong Dai, Fangnan Yao, Xiang Wei, Jin Cao, Chulgyu Jhun
In this paper, efficient phosphorescent white organic light-emitting diodes (WOLEDs) were fabricated based on ultrathin doping-free emissive layers and mixed bipolar interlayers. The energy transfer processes were proved via the research of WOLEDs with different interlayer thicknesses and transient photoluminescence lifetime. WOLEDs with optimized thickness of doping-free emissive layers show maximum current efficiency of 47.8 cd/A and 44.9 cd/A for three-colors and four-colors WOLEDs, respectively. The Commission Internationale de L'Eclairage coordinates shows a very slight variation of ( ± 0...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29659584/long-term-survival-of-patients-with-thyroid-cancer-according-to-the-methods-of-tumor-detection-a-nationwide-cohort-study-in-korea
#3
Yuh-Seog Jung, Chang-Mo Oh, Yeol Kim, Kyu-Won Jung, Junsun Ryu, Young-Joo Won
In this retrospective cohort study, we compared the survival of patients detected by screening with those detected based on symptoms, according to their tumor stages. After propensity score matching, 2,130 patients with papillary or follicular thyroid cancer, identified by screening detection (SD) and clinical detection (CD), were included. We compared the survival rates of patients identified by SD and CD in the early and advanced stages of thyroid cancer. Cox proportional hazard models were used to compare the hazard ratios (HRs) for mortality between the two groups...
2018: PloS One
https://www.readbyqxmd.com/read/29656195/direct-analysis-of-deodorants-for-determination-of-metals-by-inductively-coupled-plasma-optical-emission-spectrometry
#4
Wiviane Kássia Oliveira Correia da Costa, Caroline Santos da Silva, José Fernando Dagnone Figueiredo, Joaquim Araujo Nóbrega, Ana Paula Silveira Paim
A fast and simple dilute-and-shoot procedure for determination of Al, As, Ba, Cd, Cu, Fe, Mg, Mn, Ni, Pb, Sc, Ti, V, Zn and Zr in deodorants by inductively coupled plasma optical emission spectrometry (ICP OES) was developed. Sample preparation was carried out by diluting 1 mL of deodorant sample in 1% (v v-1 ) HNO3 . The accuracy of the analytical procedure was evaluated using addition and recovery experiments, and recoveries ranged from 80 to 119%. The limits of detection varied from 0.001 to 0.76 mg kg-1 ...
April 5, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29651652/titania-coated-silica-alone-and-modified-by-sodium-alginate-as-sorbents-for-heavy-metal-ions
#5
D Kołodyńska, M Gęca, E Skwarek, O Goncharuk
The novel organic-inorganic biohybrid composite adsorbent was synthesized based on nanosized silica-titania modified with alginate within the development of effective adsorbent for heavy metal ions. Effects of metal species Cu(II), Zn(II), Cd(II), and Pb(II); concentrations; pH; temperature; and adsorption onto titania-coated silica (ST20) initial or modified by sodium alginate (ST20-ALG) were studied. The equilibrium and kinetic data of metal ions adsorption were analyzed using Langmuir and Freundlich adsorption models and kinetic models: pseudo first order, pseudo second order, intraparticle kinetic model, and Elovich...
April 12, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29621578/determination-of-heavy-metal-content-of-processed-fruit-products-from-tehran-s-market-using-icp-oes-a-risk-assessment-study
#6
Ayub Ebadi Fathabad, Nabi Shariatifar, Mojtaba Moazzen, Shahrokh Nazmara, Yadolah Fakhri, Mahmood Alimohammadi, Ali Azari, Amin Mousavi Khaneghah
In this study, the levels of Cd, Hg, Sn, Al, Pb and As of 72 samples (36 samples for fruits juices and 36 samples for fruits canned) of three different brands including of Peach, Orange, Cherry, and Pineapple (18 samples of each fruits) marketed in Tehran, Iran (2015) were evaluated using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) technique. Also, Probabilistic risk assessment (non-carcinogenic and carcinogenic risks) was estimated by models include target hazard quotient (THQ) and cancer risk (CR) in the Monte Carlo Simulation (MCS) model...
April 2, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29619639/risk-assessment-spatial-distribution-and-source-apportionment-of-heavy-metals-in-chinese-surface-soils-from-a-typically-tobacco-cultivated-area
#7
Haiwei Liu, Haiyun Wang, Yan Zhang, Jumin Yuan, Yaodong Peng, Xiuchun Li, Yi Shi, Kuanxin He, Qiming Zhang
The heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in the surface soils of tobacco (Nicotiana tabacum L.) fields in Jiangxi Province were analyzed, and the mean heavy metal concentrations were 3.55, 0.19, 25.89, 14.96, 0.25, 10.89, 27.80, and 44.00 mg/kg, respectively. Spatial distribution analysis showed that the highest concentrations were recorded in the north-western, south-western, and mid-eastern parts of the study area. The index of geo-accumulation and pollution index indicated modest enrichment with Cd and Hg, which were the only two metals posing a potentially high ecological risk to the local agricultural environment...
April 4, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29617050/transient-antagonism-of-anti-cd20-monoclonal-antibodies-and-pi3k-inhibitor-idelalisib-in-dlbcl-cell-lines
#8
Anna-Katharina Zoellner, Nico Peter, Yvonne Zimmermann, Grit Hutter, Wolfgang Hiddemann, Martin Dreyling
INTRODUCTION: PI3K inhibitors are evaluated for relapsed and refractory DLBCL patients. OBJECTIVE: Since rituximab has shown to influence BCR-signaling, we investigated the interaction of anti-CD20 antibody rituximab and the new type II glycoengineered anti-CD20 antibody obinutuzumab in combination with the PI3K delta inhibitor idelalisib. METHODS: Established DLBCL cell lines were treated with either rituximab or obinutuzumab alone, or in combination with PI3K delta inhibitor idelalisib...
April 4, 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29614276/induction-of-labor-using-one-dose-versus-multiple-doses-of-misoprostol-a-randomized-controlled-trial
#9
Verónica Maria Pimentel, Moona Arabkhazaeli, Jee-Young Moon, Alexander Wang, Arisa Kapedani, Peter S Bernstein, Pamela J Tropper
BACKGROUND: Misoprostol is a common agent used to ripen the cervix and induce labor, yet there is no clear evidence of the optimal number of doses needed to achieve a higher rate of vaginal delivery. OBJECTIVE: Our primary objective was to compare the rate of vaginal delivery within 24 hours between a one-dose and a multiple-dose regimen of misoprostol for induction of labor STUDY DESIGN: A randomized controlled trial was conducted from March 2016 to March 2017 comparing a single dose to up to four doses of misoprostol...
March 31, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29614047/estimated-dietary-intake-of-trace-metals-from-swordfish-consumption-a-human-health-problem
#10
Grazia Barone, Angela Dambrosio, Arianna Storelli, Rita Garofalo, Vito Pietro Busco, Maria Maddalena Storelli
Trace element (Hg, Pb, Cd, Zn, Cu, Ni, and Cr) occurrence was determined in the muscle tissue of swordfish collected in the Mediterranean Sea to assess whether the intakes complied with the recommended levels for essential metals and permissible levels for toxic elements. Metals were analyzed by an atomic absorption spectrophotometer (Shimadzu AA 7000). The methodology of Target Hazard Quotient (THQ) was also evaluated. The ranking order of toxic metal concentration was Hg > Cd > Pb, while for essential elements the distribution pattern followed the sequence Zn > Cu > Ni > Cr...
April 3, 2018: Toxics
https://www.readbyqxmd.com/read/29600354/nutritional-profile-of-patients-with-chronic-inflammatory-diseases-in-the-age-of-biologicals
#11
Gabriela Piovezani Ramos, Thelma Skare, Odery Ramos Junior, Estela Rabito, Elise O Tanaami, Alessandra M Stefani, Renato Nisihara
Tumor necrosis factor alpha (TNFα) has an important role in the body composition of patients with rheumatoid arthritis (RA), Crohn's disease (CD), and spondyloarthritis (SpA). We aimed to assess the nutritional profile of patients with RA, CD, and SpA undergoing remission with multiple therapies comparing to controls and to analyze the effect of anti-TNFα medications in the nutritional parameters of these patients. One hundred thirty-one patients were included: 44 with RA, 43 with CD, and 44 with SpA. Patients receiving anti-TNFα were compared with those receiving non-biological treatment as well as to controls...
March 29, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29596987/heterogeneity-in-definitions-of-efficacy-and-safety-endpoints-for-clinical-trials-of-crohn-s-disease-a-systematic-review-for-development-of-a-core-outcome-set
#12
REVIEW
Christopher Ma, Isra M Hussein, Yousef J Al-Abbar, Remo Panaccione, Richard N Fedorak, Claire E Parker, Tran M Nguyen, Reena Khanna, Corey A Siegel, Laurent Peyrin-Biroulet, Rish K Pai, Niels Vande Casteele, Geert R D'Haens, William J Sandborn, Brian G Feagan, Vipul Jairath
BACKGROUND & AIMS: Endpoints in randomized controlled trials (RCTs) of Crohn's disease (CD) are evolving. We performed a systematic review of efficacy and safety outcomes reported in placebo-controlled RCTs of patients with CD. METHODS: MEDLINE, EMBASE, and the Cochrane Library were searched to March 1, 2017 for placebo-controlled RCTs of adult patients with CD treated with aminosalicylates, immunomodulators, corticosteroids, biologics, and oral small molecules...
March 26, 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29587752/alzheimer-like-brain-metabolic-and-structural-features-in-cholesterol-fed-rabbit-detected-by-magnetic-resonance-imaging
#13
Ping Jin, Yongming Pan, Zhiyong Pan, Jianqin Xu, Min Lin, Zhichao Sun, Minli Chen, Maosheng Xu
BACKGROUND: Hypercholesterolemia is known to increase the risk of AD in later life, the purpose of this study is to illustrate brain metabolic and structural changes in a cholesterol-fed rabbit model of Alzheimer's Disease (AD) by using clinical 3 T Magnetic Resonance Imaging (MRI). METHODS: The Institutional Animal Care and Use Committee of Zhejiang Chinese Medical University approved the study. Totally 16 Japanese White Rabbits (JWR) were randomly divided into 2 groups including normal control group fed with routine diet (group NC) and high cholesterol diet group (group CD) fed a 2% cholesterol diet with 0...
March 27, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29566678/impact-of-a-15-month-multi-channel-continuous-distribution-pilot-on-itn-ownership-and-access-in-eastern-region-ghana
#14
Celine Zegers de Beyl, Angela Acosta, April Monroe, Felix Nyanor-Fosu, Joshua Kweku Ofori, Obed Asamoah, Prince Owusu, Sureyya Hornston, Lilia Gerberg, Megan Fotheringham, Albert Kilian, Hannah Koenker
BACKGROUND: Insecticide-treated nets are a key intervention for malaria prevention. While mass distribution can rapidly scale up ITN coverage, multiple channels may be needed to sustain high levels of ITN access and ownership. In Ghana's Eastern Region, a continuous ITN distribution pilot, started in October 2012, 18-24 months after a mass campaign. The pilot distributed ITNs through antenatal care services (ANC), child welfare clinic services (CWC) through the Expanded Programme on Immunization, and to students in two classes of primary schools...
March 22, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29565145/blood-iron-levels-in-accordance-with-adherence-to-a-gluten-free-diet-in-celiac-school-aged-children
#15
María Fabiana Pirán Arce, Laura Rosana Aballay, Jorge Leandro Leporati, Alicia Navarro, Myriam Forneris
INTRODUCTION: Celiac disease (CD) causes intestinal damage, inability to absorb nutrients, and progressive malnutrition. Iron deficiency is one of the predominant nutritional problems. A strict gluten-free diet (GF) allows for an optimal quality of life. OBJECTIVE: To assess the nutritional situation of iron in school-aged celiac children by determining biochemical parameters, their relation to the consumption of the mineral and adherence to gluten-free diets in San Luis...
October 27, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29562213/study-on-the-prediction-of-soil-heavy-metal-elements-content-based-on-visible-near-infrared-spectroscopy
#16
Jinbao Liu, Yang Zhang, Huanyuan Wang, Yichun Du
The estimation of soils heavy metal content can reflect the impending surroundings of surface, which lays theoretical foundation for using covered vegetation to monitor environment and investigate resource. In this study, the contents of Cr, Mn, Ni, Cu, Zn, As, Cd, Hg and Pb in 44 soil samples were collected from Fufeng County, Yangling County and Wugong County, Shaanxi Province and were used as data sources. ASD FieldSpec HR (350-2500nm), and then the NOR, MSC and SNV of the reflectance were pretreated, the first deviation, second deviation and reflectance reciprocal logarithmic transformation were carried out...
March 14, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29556297/abnormal-populations-and-functions-of-natural-killer-cells-in-patients-with-myelodysplastic-syndromes
#17
Wei Zhang, Xinyan Xie, Huijing Mi, Jinwan Sun, Shaoxue Ding, Lijuan Li, Hui Liu, Huaquan Wang, Rong Fu, Zonghong Shao
Myelodysplastic syndromes (MDS) are clonal stem cell disorders characterized by ineffective hematopoiesis that lead to leukemia. Disorders of the immune system serve important functions in the pathophysiology and progression of this disease. Different levels or mechanisms of natural killer (NK) cells in patients with MDS have been measured in previous studies, making it challenging to understand the pathogenesis of NK cytotoxicity. The present study investigated the frequency of NK cell-mediated antibody-dependent cellular cytotoxicity and explored the function of NK cells by their activating receptors, inhibition signals, degranulation and cytotoxicity factors...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29550798/serum-neutrophil-gelatinase-associated-lipocalin-ngal-correlates-with-clinical-and-endoscopic-activity-in-ulcerative-colitis-but-fails-to-predict-activity-in-crohn-s-disease
#18
A Budzynska, M Gawron-Kiszka, E Nowakowska-Dulawa, J Spiewak, M Lesinska, M Kukla, M Waluga, M Hartleb
Serum neutrophil gelatinase-associated lipocalin (NGAL) is a low molecular weight protein released from activated neutrophils and intestine epithelium whose mRNA expression is increased in inflamed intestinal tissue. The purpose of this study was to explore the relationship between serum NGAL level and activity of inflammatory bowel diseases. A total of 120 patients, 79 with Crohn's disease (CD) and 41 with ulcerative colitis (UC) were prospectively included into the study. Serum NGAL was measured by ELISA...
December 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29543730/cadmium-nephrotoxicity-is-associated-with-altered-microrna-expression-in-the-rat-renal-cortex
#19
Michael J Fay, Lauren A C Alt, Dominika Ryba, Ribhi Salamah, Ryan Peach, Alexander Papaeliou, Sabina Zawadzka, Andrew Weiss, Nil Patel, Asad Rahman, Zyaria Stubbs-Russell, Peter C Lamar, Joshua R Edwards, Walter C Prozialeck
Cadmium (Cd) is a nephrotoxic environmental pollutant that causes a generalized dysfunction of the proximal tubule characterized by polyuria and proteinuria. Even though the effects of Cd on the kidney have been well-characterized, the molecular mechanisms underlying these effects have not been fully elucidated. MicroRNAs (miRNAs) are small non-coding RNAs that regulate cellular and physiologic function by modulating gene expression at the post-transcriptional level. The goal of the present study was to determine if Cd affects renal cortex miRNA expression in a well-established animal model of Cd-induced kidney injury...
March 15, 2018: Toxics
https://www.readbyqxmd.com/read/29538289/association-between-inflammatory-bowel-disease-and-cholelithiasis-a-nationwide-population-based-cohort-study
#20
Chien-Hua Chen, Cheng-Li Lin, Chia-Hung Kao
We assessed the subsequent risk of cholelithiasis development in patients with inflammatory bowel diseases (IBDs) such as Crohn's disease (CD) or ulcerative colitis (UC). We identified 8186 patients who aged ≥20 years and were diagnosed with IBD between 2000 and 2010 as the study cohort. A total of 8186 patients without IBD were selected by frequency-matching according to age, sex, comorbidities, and the index date of diagnosis, and they were identified as the control cohort. To measure the incidence of cholelithiasis, all patients were followed up until the end of 2011...
March 14, 2018: International Journal of Environmental Research and Public Health
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