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https://www.readbyqxmd.com/read/28098332/revisiting-the-optimized-doping-ratio-in-core-shell-nanostructured-upconversion-particles
#1
Bin Shen, Shengming Cheng, Yuyang Gu, Danrui Ni, Yilin Gao, Qianqian Su, Wei Feng, Fuyou Li
The development of rare-earth doped upconversion nanoparticles (RE-UCNPs) in various applications is fuelling the demand for nanoparticles with highly enhanced upconversion luminescence (UCL). Although the core/shell structure is proved to enhance the UCL effectively, there is still plenty of room to further improve the UCL by optimizing the doping ratio of the materials. In this article, a general strategy is demonstrated to achieve highly-enhanced visible UCL in core/shell nanostructured NaREF4 by increasing the doping ratio of Yb(3+) in the core region...
January 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28097817/revisiting-regulation-of-potassium-homeostasis-in-escherichia-coli-the-connection-to-phosphate-limitation
#2
Hannah Schramke, Vera Laermann, Halina E Tegetmeyer, Andreas Brachmann, Kirsten Jung, Karlheinz Altendorf
Two-component signal transduction constitutes the predominant strategy used by bacteria to adapt to fluctuating environments. The KdpD/KdpE system is one of the most widespread, and is crucial for K(+) homeostasis. In Escherichia coli, the histidine kinase KdpD senses K(+) availability, whereas the response regulator KdpE activates synthesis of the high-affinity K(+) uptake system KdpFABC. Here we show that, in the absence of KdpD, kdpFABC expression can be activated via phosphorylation of KdpE by the histidine kinase PhoR...
January 17, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28096423/trogocytosis-of-peptide-mhc-class-ii-complexes-from-dendritic-cells-confers-antigen-presenting-ability-on-basophils
#3
Kensuke Miyake, Nozomu Shiozawa, Toshihisa Nagao, Soichiro Yoshikawa, Yoshinori Yamanishi, Hajime Karasuyama
Th2 immunity plays important roles in both protective and allergic responses. Nevertheless, the nature of antigen-presenting cells responsible for Th2 cell differentiation remains ill-defined compared with the nature of the cells responsible for Th1 and Th17 cell differentiation. Basophils have attracted attention as a producer of Th2-inducing cytokine IL-4, whereas their MHC class II (MHC-II) expression and function as antigen-presenting cells are matters of considerable controversy. Here we revisited the MHC-II expression on basophils and explored its functional relevance in Th2 cell differentiation...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096016/the-peer-review-process-revisited
#4
EDITORIAL
Joyce J Fitzpatrick
No abstract text is available yet for this article.
February 2017: Applied Nursing Research: ANR
https://www.readbyqxmd.com/read/28094660/postoperative-bleeding-and-associated-utilization-following-tonsillectomy-in-children
#5
David O Francis, Christopher Fonnesbeck, Nila Sathe, Melissa McPheeters, Shanthi Krishnaswami, Sivakumar Chinnadurai
Objective To assess posttonsillectomy hemorrhage (PTH), associated nonoperative readmissions/revisits, and reoperations in children. Data Sources MEDLINE, EMBASE, and the Cochrane Library. Review Methods Two investigators independently screened studies against predetermined criteria and extracted key data. Investigators independently assessed study risk of bias and the strength of the evidence of the body of literature. We calculated unadjusted pooled estimates of PTH frequency and conducted a Bayesian meta-analysis to estimate frequency of primary and secondary PTH and PTH-associated reoperation and revisits/readmissions by partial and total tonsillectomy and surgical approach...
January 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28093928/functional-electrical-stimulation-therapy-for-severe-hemiplegia-randomized-control-trial-revisited
#6
Cesar Marquez-Chin, Shaghayegh Bagher, Vera Zivanovic, Milos R Popovic
BACKGROUND: Stroke is the leading cause of long-term disability. Stroke survivors seldom improve their upper-limb function when their deficit is severe, despite recently developed therapies. PURPOSE: This study aims to assess the efficacy of functional electrical stimulation therapy in improving voluntary reaching and grasping after severe hemiplegia. METHOD: A post hoc analysis of a previously completed randomized control trial ( clinicaltrials...
January 1, 2017: Canadian Journal of Occupational Therapy. Revue Canadienne D'ergothérapie
https://www.readbyqxmd.com/read/28090683/similar-but-not-consistent-revisiting-the-pitfalls-of-measuring-igg-subclasses-with-different-assays
#7
Beatrice Ludwig-Kraus, Frank Bernhard Kraus
BACKGROUND: Laboratory quantification of IgG subclasses (IgGSc) is a well-established second-line tool for differential diagnosis of immune deficiencies. However, so far there is still no internationally approved standard available for IgGSc, and different assays are prone to produce divergent results. In this study, we evaluated the comparability and equivalence of two commercially available IgGSc assays, one being the Siemens IgGSc assay on a BN ProSpec analyzer and the other being The Binding Site (TBS) IgGSc assay on a Roche cobas c502 analyzer...
January 16, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28090238/red-blood-cell-dynamics-in-biomimetic-microfluidic-networks-of-pulmonary-alveolar-capillaries
#8
Hagit Stauber, Dan Waisman, Netanel Korin, Josué Sznitman
The pulmonary capillary networks (PCNs) embody organ-specific microvasculatures, where blood vessels form dense meshes that maximize the surface area available for gas exchange in the lungs. With characteristic capillary lengths and diameters similar to the size of red blood cells (RBCs), seminal descriptions coined the term "sheet flow" nearly half a century ago to differentiate PCNs from the usual notion of Poiseuille flow in long straight tubes. Here, we revisit in true-scale experiments the original "sheet flow" model and devise for the first time biomimetic microfluidic platforms of organ-specific PCN structures perfused with RBC suspensions at near-physiological hematocrit levels...
January 10, 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28089508/a-reply-to-douze-and-delagnes-s-the-pattern-of-emergence-of-a-middle-stone-age-tradition-at-gademotta-and-kulluletti-ethiopia-through-convergent-tool-and-point-technologies-j-hum-evol-91-2016-93-121
#9
Yonatan Sahle, David R Braun
Douze and Delagnes (2016) revisit Middle Stone Age (MSA) lithic assemblages from the Gademotta Formation (Fm.), Ethiopia. Their analysis of selected assemblages from three of the 1972 excavations expands the original typo-technological interpretations by Wendorf and Schild (1974). We particularly welcome their evaluation of our recent inferences about the function of pointed artifacts and technological patterns in the Gademotta Fm. (Sahle et al., 2013, 2014). However, we find several arguments and conclusions in Douze and Delagnes (2016) to be rather unconvincing and irreconcilable with results from analyses of whole assemblages (Wendorf and Schild, 1974; Sahle et al...
January 12, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28089324/the-peculiar-functions-of-the-bacterial-extracellular-matrix
#10
REVIEW
Anna Dragoš, Ákos T Kovács
A biofilm is a common life form where bacterial cells crowd together surrounded by an extracellular matrix (ECM). Traditionally, the ECM is considered as a structural material that glues and shields the biofilm cells. Here we describe alternative functions of the ECM, highlighting how it benefits microbes beyond the biofilms. Next to protecting free-living cells, the ECM participates in signaling, migration, and genetic exchange either being freely shared with other species or being exclusive to siblings. Considering the structural and recently discovered functions of the ECM, we also attempt to revise its role in sociomicrobiology...
January 11, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28088143/fokker-planck-quantum-master-equation-for-mixed-quantum-semiclassical-dynamics
#11
Jin-Jin Ding, Yao Wang, Hou-Dao Zhang, Rui-Xue Xu, Xiao Zheng, YiJing Yan
We revisit Caldeira-Leggett's quantum master equation representing mixed quantum-classical theory, but with limited applications. Proposed is a Fokker-Planck quantum master equation theory, with a generic bi-exponential correlation function description on semiclassical Brownian oscillators' environments. The new theory has caustic terms that bridge between the quantum description on primary systems and the semiclassical or quasi-classical description on environments. Various parametrization schemes, both analytical and numerical, for the generic bi-exponential environment bath correlation functions are proposed and scrutinized...
January 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28087939/dendritic-cells-in-the-immune-system-history-lineages-tissues-tolerance-and-immunity
#12
Jonathan M Austyn
The aim of this review is to provide a coherent framework for understanding dendritic cells (DCs). It has seven sections. The introduction provides an overview of the immune system and essential concepts, particularly for the nonspecialist reader. Next, the "History" section outlines the early evolution of ideas about DCs and highlights some sources of confusion that still exist today. The "Lineages" section then focuses on five different populations of DCs: two subsets of "classical" DCs, plasmacytoid DCs, monocyte-derived DCs, and Langerhans cells...
December 2016: Microbiology Spectrum
https://www.readbyqxmd.com/read/28087498/david-oliver-older-doctors-revisited
#13
David Oliver
No abstract text is available yet for this article.
January 13, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28087222/revisiting-the-refeeding-syndrome-results-of-a-systematic-review
#14
Natalie Friedli, Zeno Stanga, Lubos Sobotka, Alison Culkin, Jens Kondrup, Alessandro Laviano, Beat Mueller, Philipp Schuetz
OBJECTIVE: Although described >70 y ago, the refeeding syndrome (RFS) remains understudied with lack of standardized definition and treatment recommendations. The aim of this systematic review was to gather evidence regarding standardized definition, incidence rate and time course of occurrence, association with adverse clinical outcomes, risk factors, and therapeutic strategies to prevent or treat this condition. METHODS: We searched MEDLINE and EMBASE for interventional and observational clinical trials focusing on RFS, excluding case reports and reviews...
June 8, 2016: Nutrition
https://www.readbyqxmd.com/read/28081505/practicability-of-monitoring-soil-cd-hg-and-pb-pollution-based-on-a-geochemical-survey-in-china
#15
Xueqi Xia, Zhongfang Yang, Guocheng Li, Tao Yu, Qingye Hou, Admire Muchimamui Mutelo
Repeated visiting, i.e., sampling and analysis at two or more temporal points, is one of the important ways of monitoring soil heavy metal contamination. However, with the concern about the cost, determination of the number of samples and the temporal interval, and their capability to detect a certain change is a key technical problem to be solved. This depends on the spatial variation of the parameters in the monitoring units. The "National Multi-Purpose Regional Geochemical Survey" (NMPRGS) project in China, acquired the spatial distribution of heavy metals using a high density sampling method in the most arable regions in China...
December 19, 2016: Chemosphere
https://www.readbyqxmd.com/read/28081116/the-sharing-experimental-animal-resources-coordinating-holdings-search-framework-encouraging-reduction-replacement-and-refinement-in-animal-research
#16
Bethny Morrissey, Karen Blyth, Phil Carter, Claude Chelala, Louise Jones, Ingunn Holen, Valerie Speirs
While significant medical breakthroughs have been achieved through using animal models, our experience shows that often there is surplus material remaining that is frequently never revisited but could be put to good use by other scientists. Recognising that most scientists are willing to share this material on a collaborative basis, it makes economic, ethical, and academic sense to explore the option to utilise this precious resource before generating new/additional animal models and associated samples. To bring together those requiring animal tissue and those holding this type of archival material, we have devised a framework called Sharing Experimental Animal Resources, Coordinating Holdings (SEARCH) with the aim of making remaining material derived from animal studies in biomedical research more visible and accessible to the scientific community...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28080054/bond-dissociation-energies-for-diatomic-molecules-containing-3d-transition-metals-benchmark-scalar-relativistic-coupled-cluster-calculations-for-twenty-molecules
#17
Lan Cheng, Jürgen Gauss, Branko Ruscic, Peter B Armentrout, John F Stanton
Benchmark scalar-relativistic coupled-cluster calculations for dissociation energies of the twenty diatomic molecules containing 3d transition metals in the 3dMLBE20 database (Xu et al., J. Chem. Theory Comput. 2015, 11, 2036) ) are reported. Electron correlation and basis set effects are systematically studied. The agreement between theory and experiment is in general satisfactory. For a subset of sixteen molecules, the standard deviation between computational and experimental values is 9 kJ/mol with the maximum deviation being 15 kJ/mol...
January 12, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28078894/synthesis-of-sulfones-and-sulfonamides-via-sulfinate-anions-revisiting-the-utility-of-thiosulfonates
#18
Pranab Shyam, Hye-Young Jang
Simple and high-yielding strategies for the production of a variety of sulfones and sulfonamides, using thiosulfonates synthesized by copper-catalyzed aerobic dimerization, are reported. Although thiosulfonates are an old class of compound, practical methods for their synthesis and utilization have not been rigorously developed. In this study, we revisit the reactions of easily accessible thiosulfonates to form sulfinate anions. Due to the similar reactivity of thiosulfonates and metal-sulfinates derived from toxic SO2, thiosulfinates are proposed to be stable, non-toxic alternatives to metal-sulfinate salts...
January 12, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28078799/specifying-a-state-guaranteed-health-benefits-package-for-kazakhstan-lessons-for-emerging-economies-and-middle-income-countries
#19
Michael Jones, Tata Chanturidze, Sam Franzen, Alex Manu, Mike Naylor
The Government of Kazakhstan is engaged in a "root and branch" modernisation of the health care sector. One aspect of the raft of modernisation programmes was to revisit the State Guaranteed Health Benefits Package, with the aim to review citizen entitlements to healthcare. This paper reviews the ongoing evolution of the planning of the health benefits package in Kazakhstan, with the main challenges encountered, and critical lessons learned, to be considered for similar attempts elsewhere. The main conclusions are that: the design process requires a blend of technical and socio-political analysis, because it attracts public interest, and therefore political risks; the scale and burden of analysis need to be kept to manageable proportions; and the relationship between the benefits package and funding modalities needs to be carefully managed by the State, to ensure access to declared entitlements to all members, including the most vulnerable, while keeping the package financially feasible...
January 12, 2017: International Journal of Health Planning and Management
https://www.readbyqxmd.com/read/28078679/diet-induced-dysmotility-and-neuropathy-in-the-gut-precedes-endotoxemia-and-metabolic-syndrome-the-chicken-and-the-egg-revisited
#20
Yvonne Elikplim Akua Nyavor, Onesmo Begira Balemba
Neuropathy of the enteric nervous system (ENS) is one of the major underlying causes of debilitating gastrointestinal (GI) motility disorders in diabetic patients. This article is protected by copyright. All rights reserved.
January 11, 2017: Journal of Physiology
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