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https://www.readbyqxmd.com/read/29666863/dft-insights-into-oxygen-vacancy-formation-and-ch-4-activation-over-ceo-2-surfaces-modified-by-transition-metals-fe-co-and-ni
#1
Dong Tian, Kongzhai Li, Yonggang Wei, Xing Zhu, Chunhua Zeng, Xianming Cheng, Yane Zheng, Hua Wang
The effects of transition metal (Fe, Co and Ni) modification (adsorption, insertion and substitution) of CeO2 surfaces on oxygen vacancy formation and CH4 activation are studied on the basis of first principles calculations. The results indicate that the hollow, O-O-bridge and Ce-O-bridge sites are the most stable sites for Fe, Co and Ni atom adsorption on the CeO2(111) surface, and the double O-bridge, O-top and double O-bridge sites are the corresponding most favorable sites for the CeO2(110) surface. Most of the configurations that are generated by the transition metal modification of CeO2(111) and (110) surfaces are accompanied by the reduction of Ce4+ to Ce3+...
April 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29659729/t-helper-17-1-cells-associate-with-multiple-sclerosis-disease-activity-perspectives-for-early-intervention
#2
Jamie van Langelaar, Roos M van der Vuurst de Vries, Malou Janssen, Annet F Wierenga-Wolf, Isis M Spilt, Theodora A Siepman, Wendy Dankers, Georges M G M Verjans, Helga E de Vries, Erik Lubberts, Rogier Q Hintzen, Marvin M van Luijn
Interleukin-17-expressing CD4+ T helper 17 (Th17) cells are considered as critical regulators of multiple sclerosis disease activity. However, depending on the species and pro-inflammatory milieu, Th17 cells are functionally heterogeneous, consisting of subpopulations that differentially produce interleukin-17, interferon-gamma and granulocyte macrophage colony-stimulating factor. In the current study, we studied distinct effector phenotypes of human Th17 cells and their correlation with disease activity in multiple sclerosis patients...
April 5, 2018: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29657669/dual-effect-of-photobiomodulation-on-melasma-downregulation-of-hyperpigmentation-and-enhanced-solar-resistance-a-pilot-study
#3
Daniel Barolet
Overview. Melasma is a resistant, sun-induced facial hyperpigmentation capable of remaining present for decades with ensuing psychological distress. Treatment is difficult and focuses on an array of measures to reduce skin hyperpigmentation resulting from triggered hyperactive melanocytes. The pathogenesis of melanoma is not clearly understood but it has been reported that some growth factors and specific cell-signaling pathways are involved. Objective. The objective of the current study was to evaluate the use of pulsed photobiomodulation to modulate melasma via the regulation of gene expression pertaining to skin pigmentation...
April 2018: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29625298/edna-based-bioassessment-of-coastal-sediments-impacted-by-an-oil-spill
#4
Yuwei Xie, Xiaowei Zhang, Jianghua Yang, Seonjin Kim, Seongjin Hong, John P Giesy, Un Hyuk Yim, Won Joon Shim, Hongxia Yu, Jong Seong Khim
Oil spills offshore can cause long-term ecological effects on coastal marine ecosystems. Despite their important ecological roles in the cycling of energy and nutrients in food webs, effects on bacteria, protists or arthropods are often neglected. Environmental DNA (eDNA) metabarcoding was applied to characterize changes in the structure of micro- and macro-biota communities of surface sediments over a 7-year period since the occurrence of Hebei Spirit oil spill on December 7, 2007. Alterations in diversities and structures of micro- and macro-biota were observed in the contaminated area where concentrations of polycyclic aromatic hydrocarbons were greater...
April 3, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29535903/retained-gallstone-presenting-as-large-intra-abdominal-mass-four-years-after-laparoscopic-cholecystectomy
#5
Gabriel O Ologun, Rachel Lovely, Mohammad Sultany, Mustafa Aman
Gallstone spillage is a common intraoperative event during laparoscopic cholecystectomy (LC). Patients present months to years with nonspecific symptoms after the original procedure. The complications of retained peritoneal gallstones are infrequent. Having a high index of suspicion is the key to early diagnosis. Every effort should be made to remove spilled gallstones at the index operation to prevent future complications, however, conversion from laparoscopy to laparotomy for retrieval of spilt gallstone is not recommended...
January 6, 2018: Curēus
https://www.readbyqxmd.com/read/29454040/development-of-an-unrelated-donor-selection-score-predictive-of-survival-after-hct-donor-age-matters-most
#6
Bronwen E Shaw, Brent R Logan, Stephen R Spellman, Steven G E Marsh, James Robinson, Joseph Pidala, Carolyn Hurley, Juliet Barker, Martin Maiers, Jason Dehn, Hailin Wang, Mike Haagenson, David Porter, Effie W Petersdorf, Ann Woolfrey, Mary M Horowitz, Michael Verneris, Katharine C Hsu, Katharina Fleischhauer, Stephanie J Lee
Donor factors, in addition to HLA matching status, have been associated with recipient survival in unrelated donor (URD) hematopoietic cell transplantation (HCT), however there is no hierarchical algorithm that weights the characteristics of individual donors against each other in a quantitative manner to facilitate donor selection. The goal of this study was to develop and validate a donor selection score that prioritizes donor characteristics associated with better survival in 8/8 HLA-matched URDs. Two separate patient/donor cohorts, the first receiving HCT between 1999-2011 (n=5952, c1), and the second between 2012-2014 (n=4510, c2) were included in the analysis...
February 14, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29453104/controlling-shape-anisotropy-of-hexagonal-cds-for-highly-stable-and-efficient-photocatalytic-h-2-evolution-and-photoelectrochemical-water-splitting
#7
Yongjin Ma, Yi Liu, Yuan Bian, Anquan Zhu, Yang Yang, Jun Pan
Photocorrosion and low solar conversion efficiency hindered widely applications of CdS in photocatalytic (PC) H 2 evolution and photoelectrochemical (PEC) water splitting. Hence, this work reports the shape anisotropy of hexagonal CdS possesses highly stable and efficient PC H 2 evolution and PEC water splitting by simply mixed diethylenetriamine (DETA) and deionized water (DIW) solvothermal. Here we demonstrate that the shape of hexagonal CdS plays an important role in their PC activity. The CdS-Nanorod yields optimal 5...
February 6, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29426493/rapid-dna-detection-based-on-self-replicating-catalyzed-hairpin-assembly-using-nucleotide-base-analog-pyrrolo-deoxycytidine-as-fluorophore
#8
Jianyuan Dai, Zhijuan Duan, Mengzhu Cao, Mengru Hao, Hongfei He, Dan Xiao
A rapid signal amplified DNA detection method based on self-replicating catalyzed hairpin assembly (SRCHA) has been proposed. In this SRCHA system, two split target DNA sequences were respectively integrated into hairpin auxiliary probes H1 and H2. H2 was used as fluorescent probe which containing a fluorescent nucleotide base analog pyrrolo-deoxycytidine (P-dC) at the end of the stem. Target DNA can be circularly used in this SRCHA system to form the helix DNA H1-H2 complex, the structure change of H2 will move P-dC from hairpin stem to flexible ssDNA sticky end, leading to fluorescence increase due to the less stacking interaction...
May 1, 2018: Talanta
https://www.readbyqxmd.com/read/29215309/can-teacher-child-relationships-support-human-rights-to-freedom-of-opinion-and-expression-education-and-participation
#9
Cen Wang, Linda J Harrison, Sharynne McLeod, Sue Walker, Jantine L Spilt
PURPOSE: This study explored how teacher-child relationships change over the early school years, in terms of closeness and conflict, whether these trajectories differ in type and frequency for children with typical development and children with speech and language concern (SLC), and whether the trajectories are associated with school outcomes at 12-13 years. METHOD: Participants were children, parents and teachers in the Longitudinal Study of Australian Children...
February 2018: International Journal of Speech-language Pathology
https://www.readbyqxmd.com/read/29183896/paediatric-salter-harris-type-iv-injury-of-distal-tibia-with-talus-fracture
#10
Swapnil Kothadia, Umesh Birole, Ashish Ranade
Fracture of talus with Salter-Harris injury of the distal end of tibia is a rare injury in paediatric age group. The authors report a case of a 13-year-old male child who sustained type IV Salter-Harris injury to the medial malleolus with coronal spilt along with spilt and depressed fracture of the neck of talus and fracture of the lateral process of talus with stable compression fracture of spine sustained due to fall from 6 meters height. CT scan delineated the morphology of fracture pattern and helped in preoperative planning...
November 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29168385/luminescence-anisotropy-and-thermal-effect-of-magnetic-and-electric-dipole-transitions-of-cr-3-ions-in-yb-yag-transparent-ceramic
#11
Fei Tang, Honggang Ye, Zhicheng Su, Yitian Bao, Wang Guo, Shijie Xu
In this article, we present an in-depth optical study on luminescence spectral features and the thermal effect of the magnetic dipole (MD) transitions (e.g., the R lines of2 E →4 A2 ) and the associated electric dipole transitions (e.g., phonon-induced sidebands of the R lines) of Cr3+ ions in ytterbium-yttrium aluminum garnet polycrystalline transparent ceramic. The doubly split R lines predominately due to the doublet splitting of the2 E level of the Cr3+ ion in an octahedral crystal field are found to show a very large anisotropy in both emission intensity and thermal broadening...
December 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29149989/low-background-and-visual-detection-of-antibiotic-based-on-target-activated-colorimetric-split-peroxidase-dnazyme-coupled-with-dual-nicking-enzyme-signal-amplification
#12
REVIEW
Xuejun Cui, Rongguo Li, Xiaofei Liu, Jingfeng Wang, Xueqi Leng, Xiaolei Song, Qianqian Pei, Yu Wang, Su Liu, Jiadong Huang
Herein, we have reported the development of a simple, rapid, and low cost colorimetric method for the detection of antibiotic based on target-activated split peroxidase DNAzyme coupled with dual nicking enzyme signal amplification (NESA). To lower background signal in G-quadruplex DNAzyme-based detection, the two split G-rich parts are caged into two different hairpin probes, respectively, preventing the two parts from assembling into the G-quadruplex structure. By the combination of restriction endonuclease-assisted cleavage reaction with the spilt G-quadruplex probes, target-modulated release of the two split G-rich parts is achieved, affording high specificity of antibiotic detection...
January 2, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29057369/internal-consistency-of-functional-magnetic-resonance-imaging-and-electroencephalography-measures-of-reward-in-late-childhood-and-early-adolescence
#13
Katherine R Luking, Brady D Nelson, Zachary P Infantolino, Colin L Sauder, Greg Hajcak
BACKGROUND: Abnormal neural response to reward is increasingly thought to function as a biological correlate of emerging psychopathology during adolescence. However, this view assumes such responses have good psychometric properties-especially internal consistency-an assumption that is rarely tested. METHODS: Internal consistency (i.e., spilt-half reliability) was calculated for event-related potentials (ERPs) and Blood Oxygen Level Dependent (BOLD) responses to monetary gain and loss feedback from the same sample of 8-14 year-old females (n=177)...
April 2017: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/28956936/teacher-child-dependency-and-teacher-sensitivity-predict-engagement-of-children-with-attachment-problems
#14
Jantine L Spilt, Eleonora Vervoort, Karine Verschueren
It is suggested that dependent teacher-child relationships are associated with emotional insecurity and a lack of autonomous exploration that interferes with children's school development. This might be especially observed among children with attachment problems who may have developed a profound sense of insecurity in relationships with others. In this study, the effects of dependency on children's classroom and peer engagement were examined as well as the protective role of teacher sensitivity. The sample included 85 Belgian children with mild to severe attachment problems and 70 teachers from special education schools...
September 28, 2017: School Psychology Quarterly
https://www.readbyqxmd.com/read/28950805/risk-factors-for-cefepime-nonsusceptible-gram-negative-infections-in-allogeneic-hematopoietic-cell-transplant-recipients
#15
A M Boyd, A J Perissinotti, J L Nagel, D G Frame, B L Marini
Purpose Allogeneic hematopoietic cell transplant recipients undergo myelosuppressive chemotherapy to allow engraftment of stem cells and are at particularly high risk for bacterial infections and adverse outcomes. Patients undergoing hematopoietic cell transplant are at increased risk for healthcare-associated infections, including infections with multidrug-resistant pathogens. Cefepime is a commonly prescribed antibiotic for empiric therapy in hematopoietic cell transplant patients, but there is minimal data describing cefepime resistance rates, risk factors for resistance, and clinical outcomes associated with cefepime-resistant infections...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28892233/hyaluronic-acid-microneedle-patch-for-the-improvement-of-crow-s-feet-wrinkles
#16
Sun Young Choi, Hyun Jung Kwon, Ga Ram Ahn, Eun Jung Ko, Kwang Ho Yoo, Beom Joon Kim, Changjin Lee, Daegun Kim
Hyaluronic acid (HA) has an immediate volumizing effect, due to its strong water-binding potential, and stimulates fibroblasts, causing collagen synthesis, with short- and long-term effects on wrinkle improvement. We investigated the efficacy and safety of HA microneedle patches for crow's feet wrinkles. Using a randomized spilt-face design, we compared microneedle patches with a topical application containing the same active ingredients. We enrolled 34 Korean female subjects with mild to moderate crow's feet wrinkles...
November 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28852294/a-spilt-head-study-of-efficacy-of-placebo-versus-platelet-rich-plasma-injections-in-the-treatment-of-androgenic-alopecia
#17
Dilip Kachhawa, Gauri Vats, Durgesh Sonare, Pankaj Rao, Sandeep Khuraiya, Rohit Kataiya
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma with haemostatic and tissue repairing effects. Being enriched by various growth factors, PRP has become the focus of attention in numerous fields of medicine. Androgenic alopecia (AGA) is a common chronic hair loss disorder, characterised by progressive hair loss. Despite the therapeutic options available, there is low patient compliance and satisfaction rate...
April 2017: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/28795884/results-of-directly-applied-activated-carbon-cloth-in-chronic-wounds-a-preliminary-study
#18
H S Scheer, M Kaiser, U Zingg
OBJECTIVE: Activated carbon (AC) has been used in wound therapy as an active substance inside dressings. Applying AC directly on a wound is a new concept. The aim of this study was to analyse the outcomes of chronic wounds which were managed with directly applied activated carbon knitted cloth (ACC, Zorflex) in Swiss patients. METHOD: A retrospective analysis of the records of all patients with chronic wounds treated with ACC between 1 October 2013 and 31 December 2015 in an outpatient wound clinic...
August 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28662428/bacterial-communities-and-chemical-parameters-in-soils-and-coastal-sediments-in-response-to-diesel-spills-at-carlini-station-antarctica
#19
Susana Vázquez, Patrick Monien, Roberto Pepino Minetti, Jutta Jürgens, Antonio Curtosi, Julia Villalba Primitz, Stephan Frickenhaus, Doris Abele, Walter Mac Cormack, Elisabeth Helmke
A diesel spill occurring at Carlini Station (King George Island (Isla 25 de Mayo), South Shetland Islands) in 2009 started the study of the fate of the hydrocarbons and their effect on the bacterial communities of the Potter Cove ecosystem. Soils and sediments were sampled across the 200-meter long diesel plume towards Potter Cove four and 15months after the spill. The sampling revealed a second fuel leakage from an underground pipeline at the spill site. The hydrocarbon fraction spilt over frozen and snow-covered ground reached the sea and dispersed with the currents...
December 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28421026/keeping-the-spirits-up-the-effect-of-teachers-and-parents-emotional-support-on-children-s-working-memory-performance
#20
Loren Vandenbroucke, Jantine Spilt, Karine Verschueren, Dieter Baeyens
Working memory, used to temporarily store and mentally manipulate information, is important for children's learning. It is therefore valuable to understand which (contextual) factors promote or hinder working memory performance. Recent research shows positive associations between positive parent-child and teacher-student interactions and working memory performance and development. However, no study has yet experimentally investigated how parents and teachers affect working memory performance. Based on attachment theory, the current study investigated the role of parent and teacher emotional support in promoting working memory performance by buffering the negative effect of social stress...
2017: Frontiers in Psychology
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