keyword
MENU ▼
Read by QxMD icon Read
search

New papers

keyword
https://www.readbyqxmd.com/read/28212446/evaluation-of-university-scientific-research-ability-based-on-the-output-of-sci-tech-papers-a-d-ahp-approach
#1
Fan Zong, Lifang Wang
University scientific research ability is an important indicator to express the strength of universities. In this paper, the evaluation of university scientific research ability is investigated based on the output of sci-tech papers. Four university alliances from North America, UK, Australia, and China, are selected as the case study of the university scientific research evaluation. Data coming from Thomson Reuters InCites are collected to support the evaluation. The work has contributed new framework to the issue of university scientific research ability evaluation...
2017: PloS One
https://www.readbyqxmd.com/read/28212421/a-low-cost-dac-bist-structure-using-a-resistor-loop
#2
Jaewon Jang, Heetae Kim, Sungho Kang
This paper proposes a new DAC BIST (digital-to-analog converter built-in self-test) structure using a resistor loop known as a DDEM ADC (deterministic dynamic element matching analog-to-digital converter). Methods for both switch reduction and switch effect reduction are proposed for solving problems related to area overhead and accuracy of the conventional DAC BIST. The proposed BIST modifies the length of each resistor in the resistor loop via a merging operation and reduces the number of switches and resistors...
2017: PloS One
https://www.readbyqxmd.com/read/28212268/optical-sensor-of-thermal-gas-flow-based-on-fiber-bragg-grating
#3
Xu Jiang, Keda Wang, Junqing Li, Hui Zhan, Zhenan Song, Guohang Che, Guohui Lyu
This paper aims at solving the problem of explosion proof in measurement of thermal gas flow using electronic sensor by presenting a new type of flow sensor by optical fiber heating. A measuring unit based on fiber Bragg grating (FBG) for fluid temperature and a unit for heat dissipation are designed to replace the traditional electronic sensors. The light in C band from the amplified spontaneous emission (ASE) light source is split, with one part used to heat the absorbing coating and the other part used in the signal processing unit...
February 15, 2017: Sensors
https://www.readbyqxmd.com/read/28212174/categorizing-and-assessing-negative-symptoms
#4
Paola Bucci, Silvana Galderisi
PURPOSE OF REVIEW: To provide a review on studies published in the last year relevant to the categorization and assessment of negative symptoms. RECENT FINDINGS: Recent research supported the validity of the 'deficit/non-deficit schizophrenia' categorization. Few studies confirmed the validity of the category 'persistent negative symptoms', whereas no recent study explored the validity of the category 'predominant negative symptoms'. The two-factor structure of the negative dimension is supported by studies reporting different correlates for the two subdomains: diminished expression and avolition/apathy...
February 15, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28212101/fast-solving-quasi-optimal-ls-s-%C3%A2-vm-based-on-an-extended-candidate-set
#5
Yuefeng Ma, Xun Liang, James T Kwok, Jianping Li, Xiaoping Zhou, Haiyan Zhang
The semisupervised least squares support vector machine (LS-S³VM) is an important enhancement of least squares support vector machines in semisupervised learning. Given that most data collected from the real world are without labels, semisupervised approaches are more applicable than standard supervised approaches. Although a few training methods for LS-S³VM exist, the problem of deriving the optimal decision hyperplane efficiently and effectually has not been solved. In this paper, a fully weighted model of LS-S³VM is proposed, and a simple integer programming (IP) model is introduced through an equivalent transformation to solve the model...
February 14, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28212085/contextual-noise-reduction-for-domain-adaptive-near-duplicate-retrieval-on-merchandize-images
#6
Zhen-Qun Yang, Xiao-Yong Wei, Zhang Yi, Gerald Friedland
In this paper, we have proposed a novel method which utilizes the contextual relationship among visual words for reducing the Quantization errors in near-duplicate image retrieval (NDR). Instead of following the track of conventional NDR techniques which usually search new solutions by borrowing ideas from the text domain, we propose to model the problem back to image domain, which results in a more natural way of solution search. The idea of the proposed method is to construct a context graph that encapsulates the contextual relationship within an image and treat the graph as a pseudo-image, so that classical image filters can be adopted to reduce the mismapped visual words which are contextually inconsistent with others...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28212001/rapid-method-for-the-quantification-of-reduced-and-oxidized-glutathione-in-human-plasma-and-saliva
#7
Kamonwad Ngamchuea, Christopher Batchelor-McAuley, Richard G Compton
A new method is developed to determine the concentrations of reduced (GSH) and oxidized glutathione (GSSG), and it enables the calculation of the GSH:GSSG ratios in human plasma and saliva samples. The assay is based on the masking of GSH in a GSH and GSSG mixture via a 1,4-addition reaction with p-benzoquinone (BQ), followed by enzymatic kinetic measurement. The enzyme, glutathione reductase, is highly specific to glutathione. Excess BQ can thus be easily removed by the addition of non-GSH thiols. The assay takes less than 2 min, is suitable for a short-time-scale study, and minimizes the in vitro underestimation of the GSH:GSSG ratio arising from the degradation of GSH and formation of GSSG...
February 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28211950/a-new-cell-cycle-checkpoint-that-senses-plasma-membrane-cell-wall-damage-in-budding-yeast
#8
Keiko Kono, Amy E Ikui
In nature, cells face a variety of stresses that cause physical damage to the plasma membrane and cell wall. It is well established that evolutionarily conserved cell cycle checkpoints monitor various cellular perturbations, including DNA damage and spindle misalignment. However, the ability of these cell cycle checkpoints to sense a damaged plasma membrane/cell wall is poorly understood. To the best of our knowledge, our recent paper described the first example of such a checkpoint, using budding yeast as a model...
February 17, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28211528/a-new-model-for-in-situ-nitrogen-incorporation-into-4h-sic-during-epitaxy
#9
Gabriel Ferro, Didier Chaussende
Nitrogen doping of 4H-SiC during vapor phase epitaxy is still lacking of a general model explaining the apparently contradictory trends obtained by different teams. In this paper, the evolutions of nitrogen incorporation (on both polar Si and C faces) as a function of the main growth parameters (C/Si ratio, temperature, pressure and growth rate) are reviewed and explained using a model based on surface exchanges between the gas phase and the uppermost 4H-SiC atomic layers. In this model, N incorporation is driven mainly by the transient formation of C vacancies, due to H2 etching, at the surface or near the surface...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211271/allyl-fluorescein-ethers-as-promising-fluorescent-probes-for-carbon-monoxide-imaging-in-living-cells
#10
Shumin Feng, Dandan Liu, Weiyong Feng, Guoqiang Feng
Recently, the fluorescent detection of carbon monoxide (CO) in living cells has attracted great attention. However, due to the lack of effective ways to construct fluorescent CO probes, fluorescent detection of CO in living cells is still in its infancy. In this paper, we report for the first time of using allyl ether as reaction site for construction of fluorescent CO probes. By this way, two readily available allyl fluorescein ethers were prepared, which were found to be highly selective and sensitive probes for CO in the presence of PdCl2...
February 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28211269/phosphorus-based-alloy-materials-for-advanced-potassium-ion-battery-anode
#11
Wenchao Zhang, Jianfeng Mao, Sean Li, Zhixin Chen, Zaiping Guo
Potassium-ion batteries (PIBs) are interesting as one of the alternative metal-ion battery systems to lithium-ion batteries (LIBs) due to the abundance and low cost of potassium. We have herein investigated Sn4P3/C composite as a novel anode material for PIBs. The electrode delivered a reversible capacity of 384.8 mA h g-1 at 50 mA g-1 and a good rate capability of 221.9 mA h g-1, even at 1 A g-1. Its electrochemical performance is better than any anode material reported so far for PIBs. It was also found that the Sn4P3/C electrode displays a discharge potential plateau of 0...
February 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28210916/a-multiscale-mathematical-model-of-tumour-invasive-growth
#12
Lu Peng, Dumitru Trucu, Ping Lin, Alastair Thompson, Mark A J Chaplain
Known as one of the hallmarks of cancer (Hanahan and Weinberg in Cell 100:57-70, 2000) cancer cell invasion of human body tissue is a complicated spatio-temporal multiscale process which enables a localised solid tumour to transform into a systemic, metastatic and fatal disease. This process explores and takes advantage of the reciprocal relation that solid tumours establish with the extracellular matrix (ECM) components and other multiple distinct cell types from the surrounding microenvironment. Through the secretion of various proteolytic enzymes such as matrix metalloproteinases or the urokinase plasminogen activator (uPA), the cancer cell population alters the configuration of the surrounding ECM composition and overcomes the physical barriers to ultimately achieve local cancer spread into the surrounding tissue...
February 16, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28210631/immunogenicity-and-cross-protection-in-mice-afforded-by-pandemic-h1n1-live-attenuated-influenza-vaccine-containing-wild-type-nucleoprotein
#13
Andrey Rekstin, Irina Isakova-Sivak, Galina Petukhova, Daniil Korenkov, Igor Losev, Tatiana Smolonogina, Tatiana Tretiak, Svetlana Donina, Svetlana Shcherbik, Tatiana Bousse, Larisa Rudenko
Since conserved viral proteins of influenza virus, such as nucleoprotein (NP) and matrix 1 protein, are the main targets for virus-specific CD8+ cytotoxic T-lymphocytes (CTLs), we hypothesized that introduction of the NP gene of wild-type virus into the genome of vaccine reassortants could lead to better immunogenicity and afford better protection. This paper describes in vitro and in vivo preclinical studies of two new reassortants of pandemic H1N1 live attenuated influenza vaccine (LAIV) candidates. One had the hemagglutinin (HA) and neuraminidase (NA) genes from A/South Africa/3626/2013 H1N1 wild-type virus on the A/Leningrad/134/17/57 master donor virus backbone (6 : 2 formulation) while the second had the HA, NA, and NP genes of the wild-type virus on the same backbone (5 : 3 formulation)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28210564/more-misinformation-on-breast-cancer-screening
#14
COMMENT
Daniel B Kopans
Unfortunately, a great deal of misinformation has accumulated in the breast cancer screening literature that is based on flawed analyses in an effort to reduce access to screening. Quite remarkably, much of this has come from publications in previously highly respected medical journals. In several papers the intervention (mammography screening) is faulted yet the analyses provided no data on who participated in mammography screening, and which cancers were detected by mammography screening. It is remarkable that a highly respected journal can fault an intervention with no data on the intervention...
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28210454/managing-patients-taking-edoxaban-in-dentistry
#15
REVIEW
Adrian Curto, Daniel Curto, Jorge Sanchez
BACKGROUND: Anticoagulation therapy is used in several conditions to prevent or treat thromboembolism. A new group of oral anticoagulants with clear advantages over classic dicoumarin oral anticoagulants (warfarin and acenocoumarol) has been developed in recent years. The Food and Drug Administration has approved edoxaban, dabigatran, rivaroxaban and apixaban. Their advantages include: predictable pharmacokinetics, drug interactions and limited food, rapid onset of action and short half-life...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210378/advances-in-vitiligo-an-update-on-medical-and-surgical-treatments
#16
REVIEW
Alexander B Dillon, Andrew Sideris, Ali Hadi, Nada Elbuluk
Vitiligo is one of the most common cutaneous disorders of depigmentation. Although its underlying causes are still being studied and no definitive cure currently exists, recent research has provided insight into pathogenic mechanisms and new treatment options. Objective: The aim of this paper is to provide a comprehensive overview of the medical and surgical therapies for vitiligo with emphasis on the most recent treatment modalities. Design: This review was conducted through a literature search using PubMed and the National institutes of Health's clinicalTrials...
January 2017: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28209561/co-creating-and-evaluating-a-web-app-mapping-real-world-health-care-services-for-students-the-servi-share-protocol
#17
Ilaria Montagni, Emmanuel Langlois, Jérôme Wittwer, Christophe Tzourio
BACKGROUND: University students aged 18-30 years are a population group reporting low access to health care services, with high rates of avoidance and delay of medical care. This group also reports not having appropriate information about available health care services. However, university students are at risk for several health problems, and regular medical consultations are recommended in this period of life. New digital devices are popular among the young, and Web-apps can be used to facilitate easy access to information regarding health care services...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28209538/new-insight-into-the-catalytic-cycle-about-epoxidation-of-alkenes-by-n2o-over-a-mn-substituted-keggin-type-polyoxometalate
#18
Meng-Xu Jiang, Chun-Guang Liu
Although epoxidation of alkenes by N2O catalyzed by Mn-substituted polyoxometalates (POMs) has been studied both experimental and theoretical methods, a complete catalytic cycle has not been established currently. In the present paper, density functional theory (DFT) calculations were employed to explore possible reaction mechanism about this catalytic cycle. Our DFT studies reveal that the reaction pathway starts from a low-valent Keggin-type POM aquametal derivative [PW11O39Mn(III)H2O](4-). In the presence of N2O pressure, the formation of the active catalytic species [PW11O39Mn(V)O](4-) involves a ligand-substituted reaction about replacement of the aqua ligand with N2O to generation of POM/N2O adduct [PW11O39Mn(III)ON2](4-) and dissociation of N2 from this adduct...
December 21, 2016: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28209508/systematic-review-of-measures-of-impairment-and-activity-limitation-for-person-with-upper-limb-trauma-and-amputation
#19
REVIEW
Linda Resnik, Matt Borgia, Ben Silver, Jill Cancio
OBJECTIVE: Study purposes were to 1) identify outcome measures used in studies of persons with traumatic upper limb injury and/or amputation and 2) evaluate focus, content and psychometric properties of each measure. DATA SOURCES: Searches of PubMed and CINAHL for terms including upper extremity, function, activities of daily living, outcome assessment, amputation and traumatic injuries. STUDY SELECTION: Included articles had a sample of ≥10 adults with limb trauma or amputation, and were in English...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28209254/leda-a-gamma-gamma-coincidence-spectrometer-for-the-measurement-of-environment-samples
#20
H Paradis, A de Vismes Ott, X Cagnat, F Piquemal, R Gurriaran
This paper presents a new gamma-gamma coincidence spectrometer to measure the radioactivity in environmental samples. This system, called Leda, is made of 2 HPGe and 1 NaI(Tl). The different analysis channels (single, in coincidence or in anti-coincidence) possible thanks to the digital electronics are described. Results obtained with environmental samples are shown. Despite its low efficiency, this method improves the detection limits for all emitters due to its very low background, and thus decreases the counting time...
January 16, 2017: Applied Radiation and Isotopes
keyword
keyword
106565
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"