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https://www.readbyqxmd.com/read/29150627/high-efficiency-backward-four-wave-mixing-by-quantum-interference
#1
Zi-Yu Liu, Jian-Ting Xiao, Jia-Kang Lin, Jun-Jie Wu, Jz-Yuan Juo, Chin-Yao Cheng, Yong-Fan Chen
Electromagnetically-induced-transparency-based four-wave mixing (FWM) in a resonant four-level double-Λ system has a maximum conversion efficiency (CE) of 25% due to spontaneous emission. Herein, we demonstrate that spontaneous emission can be considerably suppressed by arranging the applied laser beams in a backward configuration. With the backward double-Λ FWM scheme, we observe a CE of 63% in cold rubidium atoms with an optical depth (OD) of 48. To the best of our knowledge, this is the first observation of a CE exceeding the conversion limit in resonant FWM processes...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150529/impact-of-the-2013-national-rollout-of-cms-competitive-bidding-program-the-disruption-continues
#2
Gary A Puckrein, Irl B Hirsch, Christopher G Parkin, Bruce T Taylor, Liou Xu, David G Marrero
OBJECTIVE: Use of glucose monitoring is essential to the safety of individuals with insulin-treated diabetes. In 2011, the Centers for Medicare & Medicaid Services (CMS) implemented the Medicare Competitive Bidding Program (CBP) in nine test markets. This resulted in a substantial disruption of beneficiary access to self-monitoring of blood glucose (SMBG) supplies and significant increases in the percentage of beneficiaries with either reduced or no acquisition of supplies. These reductions were significantly associated with increased mortality, hospitalizations, and costs...
November 17, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29150418/immune-enhancing-formulas-for-patients-with-cancer-undergoing-esophagectomy-systematic-review-protocol
#3
Astrid Naranjo, Elizabeth Isenring, Laisa Teleni
BACKGROUND: Adult patients with an esophageal cancer can potentially be compromised with postoperative leaks or fistulae if patients' nutritional status is in a vulnerable stage. Currently in Australia, there is a growing need for clinicians to know whether use of immune-enhancing formulas (IEFs) containing Arg, omega-3, and RNA are a cost-effective approach compared with isonitrogenous-isocaloric formulas to reduce postoperative infectious complications in esophagectomy patients. Since IEFs may carry higher costs, this has led to inconsistencies in practice among clinicians and hospitals...
November 17, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/29150369/trial-registration-in-pediatric-surgery-trials
#4
Sana Rokhsefat, Deanna E Morra, Martin Offringa, Lisa M Askie, Lauren E Kelly
BACKGROUND: Prospective clinical trial registration serves to increase transparency and to mitigate selective reporting bias. An assessment of adult surgical trials revealed poor trial registration practice with incomplete provision of information in registries and inconsistent information in the corresponding publication. The extent and completeness of pediatric surgical trial registration are unknown. We aimed to determine the proportion and adequacy of clinical trial registration in pediatric surgery trials published in 2014...
October 23, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/29149196/easy-xeno-free-and-feeder-free-method-for-isolating-and-growing-limbal-stromal-and-epithelial-stem-cells-of-the-human-cornea
#5
Djida Ghoubay-Benallaoua, Céline de Sousa, Raphaël Martos, Gaël Latour, Marie-Claire Schanne-Klein, Elisabeth Dupin, Vincent Borderie
Epithelial and stromal stem cells are required to maintain corneal transparency. The aim of the study was to develop a new method to isolate and grow both corneal stromal (SSC) and epithelial limbal (LSC) stem cells from small human limbal biopsies under culture conditions in accordance with safety requirements mandatory for clinical use in humans. Superficial limbal explants were retrieved from human donor corneo-scleral rims. Human limbal cells were dissociated by digestion with collagenase A, either after epithelial scraping or with no scraping...
2017: PloS One
https://www.readbyqxmd.com/read/29148951/reframing-consent-for-clinical-research-a-function-based-approach
#6
Neal W Dickert, Nir Eyal, Sara F Goldkind, Christine Grady, Steven Joffe, Bernard Lo, Franklin G Miller, Rebecca D Pentz, Robert Silbergleit, Kevin P Weinfurt, David Wendler, Scott Y H Kim
Although informed consent is important in clinical research, questions persist regarding when it is necessary, what it requires, and how it should be obtained. The standard view in research ethics is that the function of informed consent is to respect individual autonomy. However, consent processes are multidimensional and serve other ethical functions as well. These functions deserve particular attention when barriers to consent exist. We argue that consent serves seven ethically important and conceptually distinct functions...
December 2017: American Journal of Bioethics: AJOB
https://www.readbyqxmd.com/read/29148841/promoting-transparent-reporting-of-conflicts-of-interests-and-statistical-analyses-at-the-journal-of-sex-research
#7
John K Sakaluk, Cynthia A Graham
No abstract text is available yet for this article.
November 17, 2017: Journal of Sex Research
https://www.readbyqxmd.com/read/29148738/interfacial-electrochemistry-in-liquids-probed-with-photoemission-electron-microscopy
#8
Slavomir Nemšák, Evgheni Strelcov, Tomáš Duchoň, Hongxuan Guo, Johanna Hackl, Alexander Yulaev, Ivan Vlassiouk, David N Mueller, Claus M Schneider, Andrei Kolmakov
Studies of the electrified solid-liquid interfaces are crucial for the understanding of the biological and electrochemical systems. Until recently, the use of photoemission electron microscopy (PEEM) for such purposes has been hampered by the incompatibility of the liquid samples with ultra-high vacuum environment of the electron optics and detector. Here we demonstrate that the use of ultra-thin electron transparent graphene membranes, which can sustain large pressure differentials and act as a working electrode, makes it possible to probe electrochemical reactions in operando in liquid environments with PEEM...
November 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29148271/high-refractive-index-of-acrylate-embedding-resin-clarifies-mouse-brain-tissue
#9
Hongfu Zhou, Yumiao Xiong, Yu Wang, Xiaojun Wang, Pei Li, Yadong Gang, Xiuli Liu, Shaoqun Zeng
Biological tissue transparency combined with light-sheet fluorescence microscopy is a useful method for studying the neural structure of biological tissues. The development of light-sheet fluorescence microscopy also promotes progress in biological tissue clearing methods. The current clarifying methods mostly use liquid reagent to denature protein or remove lipids first, to eliminate or reduce the scattering index or refractive index of the biological tissue. However, denaturing protein and removing lipids require complex procedures or an extended time period...
November 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29148212/flexible-stretchable-and-transparent-planar-microsupercapacitors-based-on-3d-porous-laser-induced-graphene
#10
Weixing Song, Jianxiong Zhu, Baoheng Gan, Shuyu Zhao, Hui Wang, Congju Li, Jie Wang
The graphene with 3D porous network structure is directly laser-induced on polyimide sheets at room temperature in ambient environment by an inexpensive and one-step method, then transferred to silicon rubber substrate to obtain highly stretchable, transparent, and flexible electrode of the all-solid-state planar microsupercapacitors. The electrochemical capacitance properties of the graphene electrodes are further enhanced by nitrogen doping and with conductive poly(3,4-ethylenedioxythiophene) coating. With excellent flexibility, stretchability, and capacitance properties, the planar microsupercapacitors present a great potential in fashionable and comfortable designs for wearable electronics...
November 17, 2017: Small
https://www.readbyqxmd.com/read/29148105/experiences-of-nurse-case-managers-within-a-central-discharge-planning-role-of-collaboration-between-physicians-patients-and-other-healthcare-professionals-a-sociocultural-qualitative-study
#11
Jorun E Thoma, Marion A Waite
AIMS AND OBJECTIVES: Purpose of this study was to gain knowledge of Nurse Case Managers' (NCM) experiences within the German acute care context of collaboration with patients and physicians in a discharge planning role. Further to learn about patients' assignment to the management of the NCMs. Explicitly, to explore critical incidences of interactions between NCM, patients and health care practitioner in discharge planning to understand the factor that contributes to effective collaboration...
November 17, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29148097/ce3-sensitized-tm3-mn2-doped-nayf4-colloidal-nanocrystals-intense-cool-white-light-from-phosphor-coated-uv-led
#12
Venkataramanan Mahalingam, Venkata N K B Adusumalli, Heramba V S R M Koppisetti
Intense white light emission is observed from colloidal single component NaYF4:Ce3+/Tm3+/Mn2+ nanocrystals. This combination is interesting as it uses Mn2+ ions instead of green and red emitting Ln3+ ions which are expensive and less abundant. The single band blue emission of Tm3+ ions was combined with the broadband greenish yellow emission of Mn2+ ions to produce strong white light emission using Ce3+ ions as excitation source. Interestingly, there is hardly any re-absorption of blue emission by Mn2+ ions and the spectrum matches the commercial Ce3+-doped YAG phosphor coated over blue LED...
November 17, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29148002/targeting-zero-catheter-related-bloodstream-infections-in-pediatric-intensive-care-unit-a-retrospective-matched-case-control-study
#13
Daniele G Biasucci, Mauro Pittiruti, Alessandra Taddei, Enzo Picconi, Alessandro Pizza, Davide Celentano, Marco Piastra, Giancarlo Scoppettuolo, Giorgio Conti
INTRODUCTION: The aim of this study was to evaluate the effectiveness and safety of a new three-component 'bundle' for insertion and management of centrally inserted central catheters (CICCs), designed to minimize catheter-related bloodstream infections (CRBSIs) in critically ill children. METHODS: Our 'bundle' has three components: insertion, management, and education. Insertion and management recommendations include: skin antisepsis with 2% chlorhexidine; maximal barrier precautions; ultrasound-guided venipuncture; tunneling of the catheter when a long indwelling time is expected; glue on the exit site; sutureless securement; use of transparent dressing; chlorhexidine sponge dressing on the 7th day; neutral displacement needle-free connectors...
November 8, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29146965/gpufit-an-open-source-toolkit-for-gpu-accelerated-curve-fitting
#14
Adrian Przybylski, Björn Thiel, Jan Keller-Findeisen, Bernd Stock, Mark Bates
We present a general purpose, open-source software library for estimation of non-linear parameters by the Levenberg-Marquardt algorithm. The software, Gpufit, runs on a Graphics Processing Unit (GPU) and executes computations in parallel, resulting in a significant gain in performance. We measured a speed increase of up to 42 times when comparing Gpufit with an identical CPU-based algorithm, with no loss of precision or accuracy. Gpufit is designed such that it is easily incorporated into existing applications or adapted for new ones...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146646/cross-sectional-study-of-the-financial-cost-of-training-to-the-surgical-trainee-in-the-uk-and-ireland
#15
John O'Callaghan, Helen M Mohan, Anna Sharrock, Vimal Gokani, J Edward Fitzgerald, Adam P Williams, Rhiannon L Harries
OBJECTIVES: Applications for surgical training have declined over the last decade, and anecdotally the costs of training at the expense of the surgical trainee are rising. We aimed to quantify the costs surgical trainees are expected to cover for postgraduate training. DESIGN: Prospective, cross-sectional, questionnaire-based study. SETTING/PARTICIPANTS: A non-mandatory online questionnaire for UK-based trainees was distributed nationally...
November 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/29146329/effects-of-moisture-content-on-mechanical-properties-transparency-and-thermal-stability-of-yuba-film
#16
Siran Zhang, Nayeon Kim, Wallace Yokoyama, Yookyung Kim
Yuba is the skin formed at the surface during the heating of soymilk. The 3rd, 7th, and 11th films were evaluated for properties at different RH. At 39% RH, the 11th film had the lowest moisture, while the 3rd film had the highest moisture. However, at 75% RH, reverse moisture results were obtained. The tensile strengths of the 3rd and 11th films were highest at 15% moisture, whereas the tensile strength of the 7th film was highest at 25% moisture. Elongation of the 3rd (127%) and 11th (85%) films were highest at 25% moisture...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29145871/challenges-to-implementing-gavi-s-health-system-strengthening-support-in-chad-and-cameroon-results-from-a-mixed-methods-evaluation
#17
Emily Dansereau, Yodé Miangotar, Ellen Squires, Honoré Mimche, Charbel El Bcheraoui
BACKGROUND: Since 2005, Gavi has provided health system strengthening (HSS) grants to address bottlenecks affecting immunization services. This study is the first to evaluate the Gavi HSS implementation process in either Cameroon or Chad, two countries with significant health system challenges and poor achievement on the child and maternal health Millennium Development Goals. METHODS: We triangulated quantitative and qualitative data including financial records, document review, field visit questionnaires, and key informant interviews (KII) with representatives from the Ministries of Health, Gavi, and other partners...
November 16, 2017: Globalization and Health
https://www.readbyqxmd.com/read/29144848/watching-the-evolution-of-the-american-family-amazon-s-transparent-ecological-systems-theory-and-the-changing-dynamics-of-public-opinion
#18
Amy B Becker, Maureen E Todd
Using Bronfenbrenner's (1979) ecological systems theory as an organizing framework, the research closely examines the text of the Amazon Studios hit show, Transparent, and by extension the evolution of public opinion towards transgender individuals. By examining the Pfefferman family in detail and their related microsystem and macrosystem, we are able to closely unpack the transition of Jeffrey Tambor's character from Mort to Maura and the show's connections with broader developments in the Los Angeles LGBT community and the Jewish diaspora in postwar and contemporary Los Angeles...
November 16, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/29144745/high-efficiency-near-infrared-and-semitransparent-non-fullerene-acceptor-organic-photovoltaic-cells
#19
Yongxi Li, Jiu-Dong Lin, Xiaozhou Che, Yue Qu, Feng Liu, Liang-Sheng Liao, Stephen R Forrest
The absence of near-infrared (NIR) solar cells with high open circuit voltage (Voc) and external quantum efficiency (EQE) has impeded progress toward achieving organic photovoltaic (OPV) power conversion efficiency PCE > 15%. Here we report a small energy gap (1.3 eV), chlorinated nonfullerene acceptor-based solar cell with PCE = 11.2 ± 0.4%, short circuit current of 22.5 ± 0.6 mA cm(-2), Voc = 0.70 ± 0.01 V and fill factor of 0.71 ± 0.02, which is the highest performance reported to date for NIR single junction OPVs...
November 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29144576/molecular-reproduction-development-volume-84-issue-11-november-2017
#20
(no author information available yet)
Ctenophores, also known as comb jellies, are non-bilaterian invertebrates and nearly all are self-fertile hermaphrodites. Mnemiopsis leidyi is a particularly useful model for the study of cellular, tissue, and organ patterning in ctenophores due to their extreme transparency, as seen in these adults. The locomotory ctene rows, highlighted by iridescence, overlie the germ line, from which gametes and embryos are readily available in large numbers. In this issue, Davidson et al. characterize transcript expression and timing of the maternal-to-zygotic transition and accompanying zygotic genome activation during early embryogenesis in this ctenophore...
November 2017: Molecular Reproduction and Development
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