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https://www.readbyqxmd.com/read/28335453/a-spatially-offset-raman-spectroscopy-method-for-non-destructive-detection-of-gelatin-encapsulated-powders
#1
Kuanglin Chao, Sagar Dhakal, Jianwei Qin, Yankun Peng, Walter F Schmidt, Moon S Kim, Diane E Chan
Non-destructive subsurface detection of encapsulated, coated, or seal-packaged foods and pharmaceuticals can help prevent distribution and consumption of counterfeit or hazardous products. This study used a Spatially Offset Raman Spectroscopy (SORS) method to detect and identify urea, ibuprofen, and acetaminophen powders contained within one or more (up to eight) layers of gelatin capsules to demonstrate subsurface chemical detection and identification. A 785-nm point-scan Raman spectroscopy system was used to acquire spatially offset Raman spectra for an offset range of 0 to 10 mm from the surfaces of 24 encapsulated samples, using a step size of 0...
March 18, 2017: Sensors
https://www.readbyqxmd.com/read/28335346/a-facile-method-to-in-situ-synthesize-porous-ni%C3%A2-geo%C3%A2-nano-sheets-on-nickel-foam-as-advanced-anode-electrodes-for-li-ion-batteries
#2
Delong Ma, Xiaomin Shi, Anming Hu
A strategy for growth of porous Ni₂GeO₄ nanosheets on conductive nickel (Ni) foam with robust adhesion as a high-performance electrode for Li-ion batteries is proposed and realized, through a facile two-step method. It involves the low temperature hydro-thermal synthesis of bimetallic (Ni, Ge) hydroxide nanosheets precursor on Ni foam substrates and subsequent thermal transformation to porous Ni₂GeO₄ nanosheets. The as-prepared Ni₂GeO₄ nanosheets possess many interparticle mesopores with a size range from 5 to 15 nm...
November 19, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335311/a-study-of-inverted-type-perovskite-solar-cells-with-various-composition-ratios-of-fapbi%C3%A2-1-x-mapbbr%C3%A2-x
#3
Lung-Chien Chen, Zong-Liang Tseng, Jun-Kai Huang
This work presents mixed (FAPbI₃)1-x(MAPbBr₃)x perovskite films with various composition ratios, x (x = 0-1), which are formed using the spin coating method. The structural, optical, and electronic behaviors of the mixed (FAPbI₃)1-x(MAPbBr₃)x perovskite films are discussed. A device with structure glass/indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)/mixed perovskite/C60/BCP/Ag was fabricated. The mixed perovskite film was an active light-harvesting layer. PEDOT: PSS was a hole transporting layer between the ITO and perovskite...
October 13, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334795/everyday-stressors-in-deaf-and-hard-of-hearing-adolescents-the-role-of-coping-and-pragmatics
#4
Anat Zaidman-Zait, Adi Dotan
The current mixed-methods study examined everyday problems among deaf and hard of hearing (DHH) adolescents across various life domains. To better understand the factors influencing levels of perceived stress, the impact of DHH adolescents' coping and pragmatic abilities was also examined. Thirty DHH adolescents completed questionnaires about everyday stressors and coping, and 13 of these respondents were interviewed regarding their everyday problems. All participants used spoken language and attended mainstream high schools...
February 17, 2017: Journal of Deaf Studies and Deaf Education
https://www.readbyqxmd.com/read/28334680/assessing-driving-forces-of-land-use-and-land-cover-change-by-a-mixed-method-approach-in-north-eastern-ghana-west-africa
#5
Janina Kleemann, Gülendam Baysal, Henry N N Bulley, Christine Fürst
Land use and land cover change (LULCC) is the result of complex human-environmental interactions. The high interdependencies in social-ecological systems make it difficult to identify the main drivers. However, knowledge of key drivers of LULCC, including indirect (underlying) drivers which cannot be easily determined by spatial or economic analyses, is essential for land use planning and especially important in developing countries. We used a mixed-method approach in order to detect drivers of LULCC in the Upper East Region of northern Ghana by different qualitative and quantitative methods which were compared in a confidence level analysis...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28334660/preparation-and-photovoltaic-properties-of-cds-quantum-dot-sensitized-solar-cell-based-on-zinc-tin-mixed-metal-oxides
#6
Jiupeng Cao, Yifan Zhao, Yatong Zhu, Xiaoyu Yang, Peng Shi, Hongdi Xiao, Na Du, Wanguo Hou, Genggeng Qi, Jianqiang Liu
The present study reports a new type of quantum dot sensitized solar cells (QDSSCs) using the zinc tin mixed metal oxides (MMO) as the anode materials, which were obtained from the layered double hydroxide (LDH) precursor. The successive ionic layer adsorption and reaction (SILAR) method is applied to deposit CdS quantum dots. The effects of sensitizing cycles on the performance of CdS QDSSC are studied. Scanning electron microscopy (SEM), Transmission electron microscope (TEM) and X-ray diffraction (XRD) are used to identify the surface profile and crystal structure of the mixed metal oxides anode...
March 16, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28334558/feasibility-and-added-value-of-executive-walkrounds-in-long-term-care-organizations-in-the-netherlands
#7
Loes van Dusseldorp, Getty Huisman-de Waal, Hub Hamers, Gert Westert, Lisette Schoonhoven
BACKGROUND: Currently available tools for the management of safety in health care are largely based on quantitative management information. Executive WalkRounds (WalkRounds [WR]) seems useful as a leadership tool to detect "soft signals"-alerts of unsafe situations or practices-and to enhance the mutual trust between frontline staff and the board of directors. The majority of the research on WR has been performed in hospitals. Therefore, a study was conducted to assess how the boards of directors of long term care organizations value WR as a leadership tool to perceive soft signals, and whether soft signals are of added value to enhance patient safety...
December 2016: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28334549/limitations-of-immunomagnetic-separation-for-detection-of-the-top-seven-serogroups-of-shiga-toxin-producing-escherichia-coli
#8
J Hallewell, T Alexander, T Reuter, K Stanford
Shiga toxin-producing Escherichia coli (STEC) strains are foodborne pathogens that negatively impact human health and compromise food safety. Serogroup O157 is the most frequently isolated and studied STEC serogroup, but six others (O26, O45, O103, O111, O121, and O145) have also been identified as significant sources of human disease and collectively have been referred to as the "top six" pathogenic serogroups. Because detection methods for non-O157 serogroups are not yet refined, the objective of this study was to compare the effectiveness of immunomagnetic separation (IMS) for recovery of serogroup O157 isolates with that for each of the top six E...
March 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28334489/ce-iv-gd-iii-mixed-oxides-as-hosts-for-er-iii-based-upconversion-phosphors
#9
Cecilia Sorbello, Petra Gross, Cristian A Strassert, Matías Jobbágy, Beatriz C Barja
A family of Er(III) and Er(III) -Yb(III) based nanophosphors, hosted in monophasic oxidic Ce(IV) -Gd(III) binary solid solutions, was prepared. The samples were formulated with a constant Er(III) content as the activator, with the eventual addition of Yb(III) as a sensitizer. The amorphous Ce0.94-x Gdx Er0.06 (OH)CO3 ⋅H2 O and Ce0.94-x Gdx Er0.05 Yb0.01 (OH)CO3 ⋅H2 O precursors were prepared by following the urea method to obtain monodispersed spheres of tunable size ranging from 30 to 450 nm. After being decomposed at 1273 K under an atmosphere of air, the precursors of 200 nm in diameter evolved into monophasic polycrystalline particles preserving the parent shape and size...
March 23, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28334088/relapse-re-infection-and-mixed-infections-in-tuberculosis-disease
#10
Amanda McIvor, Hendrik Koornhof, Bavesh Davandra Kana
Tuberculosis (TB) disease can be characterized by genotypic and phenotypic complexity in Mycobacterium tuberculosis bacilli within a single patient. This microbiological heterogeneity has become an area of intense study due its perceived importance in drug tolerance, drug resistance and as a surrogate measure of transmission rates. This review presents a descriptive analysis of research describing the prevalence of mixed strain TB infections in geographically distinct locations. Despite significant variation in disease burden and a rampant HIV-TB co-epidemic, there was no difference in the prevalence range of mixed infections reported in African countries when compared to the rest of the world...
February 18, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28334023/preferences-for-the-provision-of-whole-genome-sequencing-services-among-young-adults
#11
Christopher H Wade, Kailyn R Elliott
OBJECTIVES: As whole genome sequencing (WGS) becomes increasingly available, clinicians will be faced with conveying complex information to individuals at different stages in life. The purpose of this study is to characterize the views of young adults toward obtaining WGS, learning different types of genomic information, and having choice about which results are disclosed. METHODS: A mixed-methods descriptive study was conducted with a diverse group of 18 and 19-years-olds (N = 145)...
2017: PloS One
https://www.readbyqxmd.com/read/28333646/recurrent-neural-networks-with-auxiliary-memory-units
#12
Jianyong Wang, Lei Zhang, Quan Guo, Zhang Yi
Memory is one of the most important mechanisms in recurrent neural networks (RNNs) learning. It plays a crucial role in practical applications, such as sequence learning. With a good memory mechanism, long term history can be fused with current information, and can thus improve RNNs learning. Developing a suitable memory mechanism is always desirable in the field of RNNs. This paper proposes a novel memory mechanism for RNNs. The main contributions of this paper are: 1) an auxiliary memory unit (AMU) is proposed, which results in a new special RNN model (AMU-RNN), separating the memory and output explicitly and 2) an efficient learning algorithm is developed by employing the technique of error flow truncation...
March 21, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28333623/a-comparison-of-fem-based-inversion-algorithms-local-frequency-estimation-and-direct-inversion-approach-used-in-mr-elastography
#13
Mohammad Honarvar, Ramin Sahebjavaher, Robert Rohling, Septimiu Salcudean
In quantitative elastography, maps of the mechanical properties of soft tissue, or elastograms, are calculated from the measured displacement data by solving an inverse problem. The model assumptions have a significant effect on elastograms. Motivated by the high sensitivity of imaging results to the model assumptions for in-vivo Magnetic Resonance Elastography (MRE) of the prostate, we compared elastograms obtained with four different methods. Two FEM-based methods developed by our group were compared with two other commonly used methods, Local Frequency Estimator (LFE) and curl-based Direct Inversion (c-DI)...
March 22, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28333334/a-mixed-method-evaluation-of-peer-education-workshops-for-school-aged-children-to-teach-about-antibiotics-microbes-and-hygiene
#14
Vicki L Young, Amy Cole, Donna M Lecky, Dennis Fettis, Beth Pritchard, Neville Q Verlander, Charlotte V Eley, Cliodna A M McNulty
Background: Delivering health topics in schools through peer education is known to be beneficial for all students involved. In this study, we have evaluated a peer-education workshop that aims to educate primary and secondary school students on hygiene, the spread of infection and antibiotics. Methods: Four schools in south-west England, in a range of localities, took part in peer-education workshops, with students completing before, after and knowledge-retention questionnaires...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28333272/family-building-using-embryo-adoption-relationships-and-contact-arrangements-between-provider-and-recipient-families-a-mixed-methods-study
#15
Lucy Frith, Eric Blyth, Steve Lui
STUDY QUESTION: What contact arrangements are established between providers and recipients of embryos using Snowflakes® Embryo Adoption Program? SUMMARY ANSWER: Contact arrangements varied considerably and were generally positively described, although some challenges were acknowledged. WHAT IS KNOWN ALREADY: Reproductive technologies create new and diverse family forms, and the ways in which families created by embryo adoption are negotiated in practice have not been extensively investigated...
March 8, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333245/euploidy-rates-in-donor-egg-cycles-significantly-differ-between-fertility-centers
#16
S Munné, M Alikani, L Ribustello, P Colls, Pedro A Martínez-Ortiz, D H McCulloh
STUDY QUESTION: Do external factors affect euploidy in egg donor cycles? SUMMARY ANSWER: The study demonstrates that during human assisted reproduction, embryonic chromosome abnormalities may be partly iatrogenic. WHAT IS KNOWN ALREADY: Chromosome abnormalities have been linked in the past to culture conditions such as temperature and Ph variations, as well as hormonal stimulation. Those reports were performed with older screening techniques (FISH), or ART methods no longer in use, and the subjects studied were not a homogeneous group...
March 2, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333230/bayesian-analysis-of-evolutionary-divergence-with-genomic-data-under-diverse-demographic-models
#17
Yujin Chung, Jody Hey
We present a new Bayesian method for estimating demographic and phylogenetic history using population genomic data. Several key innovations are introduced that allow the study of diverse models within an Isolation with Migration framework. The new method implements a 2-step analysis, with an initial Markov chain Monte Carlo (MCMC) phase that samples simple coalescent trees, followed by the calculation of the joint posterior density for the parameters of a demographic model. In step 1, the MCMC sampling phase, the method uses a reduced state space, consisting of coalescent trees without migration paths, and a simple importance sampling distribution without the demography of interest...
February 25, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28333069/environmental-enrichment-in-kennelled-pit-bull-terriers-canis-lupus-familiaris
#18
Jenna Kiddie, Anna Bodymore, Alex Dittrich
Although social enrichment can be considered beneficial in helping dogs cope with the kennel environment, when taking individual needs into account, it places a large demand on the carers and may not be appropriate in under-resourced kennels. Some kennels are also designed in such a way that there is too much social interaction, in that individuals cannot choose to distance themselves from conspecifics. This study therefore aimed to assess the effects of easily accessible enrichment on the behaviour of kennelled Pit Bull Terrier type dogs rescued from a dog-fighting ring in the Philippines...
March 23, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28333039/corrigendum-to-in-vivo-evaluation-of-copper-release-and-acute-local-tissue-reactions-after-implantation-of-copper-coated-titanium-implants-in-rats
#19
Andreas Hoene, Cornelia Prinz, Uwe Walschus, Silke Lucke, Maciej Patrzyk, Lutz Wilhelm, Hans-Georg Neumann, Michael Schlosser
In the "Materials and methods" chapter of the article given above, in section 2.1 titled "Implant samples and preparation" on page 2 (top paragraph of the right column), an incorrect value of 1 μg mm-2 for the average Cu load of the surface was inadvertently specified. This was due to an accidental mix-up of electronic data sets from examination of different implant series. The correct value is 0.2 μg mm-2. No other data given in the article are affected. The authors kindly apologize for this mistake.
March 23, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28332951/-cancer-was-a-speed-bump-in-my-path-to-enlightenment-a-qualitative-analysis-of-situational-coping-experiences-among-young-adult-survivors-of-childhood-cancer
#20
Rebecca H Foster, Amanda M Brouwer, Robyn Dillon, Matthew J Bitsko, Kamar Godder, Marilyn Stern
Young adult survivors of childhood cancer (N = 47) completed essays exploring situational coping within a mixed methods study. Data were qualitatively analyzed using consensual qualitative research-modified methodology. Five themes emerged: (1) initial reactions to cancer, (2) adjustment/coping with cancer diagnosis and treatment, (3) provisions of social support, (4) perceived effects of cancer experience, and (5) reflections on the cancer experience. Perceptions of childhood cancer experiences appear generally positive, with the majority of negative reactions emerging immediately following diagnosis...
February 15, 2017: Journal of Psychosocial Oncology
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