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https://www.readbyqxmd.com/read/28211997/highly-conformal-ni-micromesh-as-a-current-collecting-front-electrode-for-reduced-cost-si-solar-cell
#1
Nikita Gupta, K D Mallikharjuna Rao, Ritu Gupta, Frederik C Krebs, Giridhar U Kulkarni
Despite relatively high manufacturing cost, crystalline-Si solar cell continues to hold promising future due to its high energy conversion efficiency and long life. As regards cost, one pertinent issue is the top electrode metallization of textured cell surface, which typically involves screen printing of silver paste. The associated disadvantages call for alternative methods that can lower the cost without compromising the solar cell efficiency. In the present work, a highly interconnected one dimensional (1D) metal wire network has been employed as front electrode on conventional Si wafers...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28211995/far-uv-annealed-inkjet-printed-in2o3-semiconductor-layers-for-tfts-on-flexible-pen-substrate
#2
Jaakko Henrik Leppäniemi, Kim Eiroma, Himadri Majumdar, Ari Alastalo
The inkjet-printing process of precursor solutions containing In-nitrate dissolved in 2-methoxyethanol is optimized using ethylene glycol as a co-solvent that allows the stabilization of the droplet formation, leading to a robust, repeatable printing process. The inkjet-printed precursor films are then converted to In2O3 semiconductors at flexible-substrate-compatible low-temperatures (150 - 200 °C) using combined far ultraviolet (FUV) exposure at ~160 nm and thermal treatment. The compositional nature of the precursor-to-metal oxide conversion is studied using grazing incidence X-ray diffraction (GIXRD), X-ray reflectivity (XRR) and Fourier transform infrared (FTIR) spectroscopy that indicate that amorphous, high density (up to 5...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28211933/enhanced-bone-tissue-regeneration-using-a-3d-printed-microstructure-incorporated-with-a-hybrid-nano-hydrogel
#3
Dong Nyoung Heo, Nathan J Castro, Se-Jun Lee, Hanaul Noh, Wei Zhu, Lijie Grace Zhang
Three-dimensional (3D) functional constructs with biomimetic mechanical and chemical properties are ideal for various regenerative medicine applications. These properties of 3D fabricated constructs mainly depend on the intrinsic characteristics of the materials and fabrication method. In this respect, the current use of hydrogels for musculoskeletal tissue repair is not ideal due to the lack of suitable mechanical properties, as well as the high biomimetic requirement for success. To overcome this limitation, we developed a novel functionalized hydrogel with bioactive gold nanoparticles (GNPs), reinforcing a 3D printed microstructure via fused deposition modeling (FDM) for bone tissue regeneration...
February 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28211911/three-dimensional-printing-of-calcium-sulfate-and-mesoporous-bioactive-glass-scaffolds-for-improving-bone-regeneration-in-vitro-and-in-vivo
#4
Xin Qi, Peng Pei, Min Zhu, Xiaoyu Du, Chen Xin, Shichang Zhao, Xiaolin Li, Yufang Zhu
In the clinic, bone defects resulting from infections, trauma, surgical resection and genetic malformations remain a significant challenge. In the field of bone tissue engineering, three-dimensional (3D) scaffolds are promising for the treatment of bone defects. In this study, calcium sulfate hydrate (CSH)/mesoporous bioactive glass (MBG) scaffolds were successfully fabricated using a 3D printing technique, which had a regular and uniform square macroporous structure, high porosity and excellent apatite mineralization ability...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211865/printing-cures-organovo-advances-with-3d-printed-liver-tissue
#5
Ellen P Neff
No abstract text is available yet for this article.
February 17, 2017: Lab Animal
https://www.readbyqxmd.com/read/28211559/behavioral-genetics-in-polish-print-news-media-between-2000-and-2014
#6
Jan Domaradzki
OBJECTIVES: The aim of this paper is to describe how Polish print news media frame relations between genetics and human behaviors and what images of behavioral genetics dominate in press discourse. METHODS: A content and frame analysis of 72 print news articles about behavioral genetics published between 2000 and 2014 in four major Polish weekly magazines: "Polityka", "Wprost", "Newsweek" and "Przekrój" was conducted. RESULTS: Twenty one different behaviors were mentioned in the sample and six major analytic frames were identified: essentialist, materialistic, deterministic, probabilistic, optimistic and pessimistic...
December 23, 2016: Psychiatria Polska
https://www.readbyqxmd.com/read/28211538/wafer-scale-two-dimensional-semiconductors-from-printed-oxide-skin-of-liquid-metals
#7
Benjamin J Carey, Jian Zhen Ou, Rhiannon M Clark, Kyle J Berean, Ali Zavabeti, Anthony S R Chesman, Salvy P Russo, Desmond W M Lau, Zai-Quan Xu, Qiaoliang Bao, Omid Kevehei, Brant C Gibson, Michael D Dickey, Richard B Kaner, Torben Daeneke, Kourosh Kalantar-Zadeh
A variety of deposition methods for two-dimensional crystals have been demonstrated; however, their wafer-scale deposition remains a challenge. Here we introduce a technique for depositing and patterning of wafer-scale two-dimensional metal chalcogenide compounds by transforming the native interfacial metal oxide layer of low melting point metal precursors (group III and IV) in liquid form. In an oxygen-containing atmosphere, these metals establish an atomically thin oxide layer in a self-limiting reaction...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28211466/local-self-uniformity-in-photonic-networks
#8
Steven R Sellers, Weining Man, Shervin Sahba, Marian Florescu
The interaction of a material with light is intimately related to its wavelength-scale structure. Simple connections between structure and optical response empower us with essential intuition to engineer complex optical functionalities. Here we develop local self-uniformity (LSU) as a measure of a random network's internal structural similarity, ranking networks on a continuous scale from crystalline, through glassy intermediate states, to chaotic configurations. We demonstrate that complete photonic bandgap structures possess substantial LSU and validate LSU's importance in gap formation through design of amorphous gyroid structures...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28211056/targeted-mass-media-interventions-promoting-healthy-behaviours-to-reduce-risk-of-non-communicable-diseases-in-adult-ethnic-minorities
#9
REVIEW
Annhild Mosdøl, Ingeborg B Lidal, Gyri H Straumann, Gunn E Vist
BACKGROUND: Physical activity, a balanced diet, avoidance of tobacco exposure, and limited alcohol consumption may reduce morbidity and mortality from non-communicable diseases (NCDs). Mass media interventions are commonly used to encourage healthier behaviours in population groups. It is unclear whether targeted mass media interventions for ethnic minority groups are more or less effective in changing behaviours than those developed for the general population. OBJECTIVES: To determine the effects of mass media interventions targeting adult ethnic minorities with messages about physical activity, dietary patterns, tobacco use or alcohol consumption to reduce the risk of NCDs...
February 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28209379/endocultivation-continuous-application-of-rhbmp-2-via-mini-osmotic-pumps-to-induce-bone-formation-at-extraskeletal-sites
#10
B E Beck-Broichsitter, S T Becker, H Seitz, J Wiltfang, P H Warnke
The continuous presence of recombinant human bone morphogenetic protein 2 (rhBMP-2) inside a scaffold may be crucial to the outcome in bone tissue engineering. This study investigated whether the release of the growth factor rhBMP-2 via different continuous application schemes influences histomorphological aspects of the hard and soft tissues induced. Three-dimensionally printed hydroxyapatite scaffolds were implanted into one latissimus dorsi muscle of 42 female Lewis rats. Simultaneously implanted mini-osmotic pumps were used to provide a continuous application of rhBMP-2 over 1, 2, or 4 weeks (total dose 200μg)...
February 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28208779/proof-of-concept-of-integrated-load-measurement-in-3d-printed-structures
#11
Michaël Hinderdael, Zoé Jardon, Margot Lison, Dieter De Baere, Wim Devesse, Maria Strantza, Patrick Guillaume
Currently, research on structural health monitoring systems is focused on direct integration of the system into a component or structure. The latter results in a so-called smart structure. One example of a smart structure is a component with integrated strain sensing for continuous load monitoring. Additive manufacturing, or 3D printing, now also enables such integration of functions inside components. As a proof-of-concept, the Fused Deposition Modeling (FDM) technique was used to integrate a strain sensing element inside polymer (ABS) tensile test samples...
February 9, 2017: Sensors
https://www.readbyqxmd.com/read/28208758/a-study-on-the-thermomechanical-reliability-risks-of-through-silicon-vias-in-sensor-applications
#12
Shuai Shao, Dapeng Liu, Yuling Niu, Kathy O'Donnell, Dipak Sengupta, Seungbae Park
Reliability risks for two different types of through-silicon-vias (TSVs) are discussed in this paper. The first is a partially-filled copper TSV, if which the copper layer covers the side walls and bottom. A polymer is used to fill the rest of the cavity. Stresses in risk sites are studied and ranked for this TSV structure by FEA modeling. Parametric studies for material properties (modulus and thermal expansion) of TSV polymer are performed. The second type is a high aspect ratio TSV filled by polycrystalline silicon (poly Si)...
February 9, 2017: Sensors
https://www.readbyqxmd.com/read/28208633/compact-planar-ultrawideband-antennas-with-3-5-5-2-5-8-ghz-triple-band-notched-characteristics-for-internet-of-things-applications
#13
Jian Dong, Qianqian Li, Lianwen Deng
Ultrawideband (UWB) antennas, as core devices in high-speed wireless communication, are widely applied to mobile handsets, wireless sensor networks, and Internet of Things (IoT). A compact printed monopole antenna for UWB applications with triple band-notched characteristics is proposed in this paper. The antenna has a very compact size of 10 x 16 mm2 and is composed of a square slotted radiation patch and a narrow rectangular ground plane on the back of the substrate. First, by etching a pair of inverted T-shaped slots at the bottom of the radiation patch, one notched band at 5-6 GHz for rejecting the Wireless Local Area Network (WLAN) is generated...
February 10, 2017: Sensors
https://www.readbyqxmd.com/read/28208299/open-source-based-3d-printing-of-thin-silica-gel-layers-in-planar-chromatography
#14
Dimitri Fichou, Gertrud E Morlock
On the basis of open-source packages, 3D printing of thin silica gel layers is demonstrated as proof-of-principle for use in planar chromatography. A slurry doser was designed to replace the plastic extruder of an open-source Prusa i3 printer. The optimal parameters for 3D printing of layers were studied, and the planar chromatographic separations on these printed layers were successfully demonstrated with a mixture of dyes. The layer printing process was fast. For printing a 0.2 mm layer on a 10 cm × 10 cm format, it took less than 5 min...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28208250/simultaneous-voltammetric-determination-of-acetaminophen-and-isoniazid-hepatotoxicity-related-drugs-utilizing-bismuth-oxide-nanorod-modified-screen-printed-electrochemical-sensing-platforms
#15
Bahaa G Mahmoud, Mohamed Khairy, Farouk A Rashwan, Craig E Banks
To overcome the recent outbreaks of hepatotoxicity-related drugs, a new analytical tool for the continuously determination of these drugs in human fluids is required. Electrochemical-based analytical methods offer an effective, rapid, and simple tool for on-site determination of various organic and inorganic species. However, the design of a sensitive, selective, stable, and reproducible sensor is still a major challenge. In the present manuscript, a facile, one-pot hydrothermal synthesis of bismuth oxide (Bi2O2...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207344/the-future-of-the-affordable-care-act-and-insurance-coverage
#16
Sherry Glied, Adlan Jackson
We describe the patterns of coverage gains associated with the Affordable Care Act (ACA) expansions and use these patterns to assess the potential impact of alternative repeal or repeal and replace strategies because Congress and the president are weighing options to repeal or replace the ACA. We find that specific provisions of the ACA, including the Medicaid expansion and the structure of premium subsidies, have been associated with large and robust gains in insurance coverage. We evaluate the impact of retaining dependent coverage and high-risk pool provisions and show, on the basis of the ACA experience, that these provisions would have little effect on coverage...
February 16, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28207343/impact-of-early-head-start-in-north-carolina-on-dental-care-use-among-children-younger-than-3-years
#17
Jacqueline M Burgette, John S Preisser, Morris Weinberger, Rebecca S King, Jessica Y Lee, R Gary Rozier
OBJECTIVES: To examine the effects of North Carolina Early Head Start (EHS), an early education program for low-income children younger than 3 years and their families, on dental care use among children. METHODS: We performed a quasi-experimental study in which we interviewed 479 EHS and 699 non-EHS parent-child dyads at baseline (2010-2012) and at a 24-month follow-up (2012-2014). We estimated the effects of EHS participation on the probability of having a dental care visit after controlling for baseline dental care need and use and a propensity score covariate; we included random effects to account for EHS program clustering...
February 16, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28207342/cumulative-lifetime-marijuana-use-and-incident-cardiovascular-disease-in-middle-age-the-coronary-artery-risk-development-in-young-adults-cardia-study
#18
Jared P Reis, Reto Auer, Michael P Bancks, David C Goff, Cora E Lewis, Mark J Pletcher, Jamal S Rana, James M Shikany, Stephen Sidney
OBJECTIVES: To investigate the effects of marijuana in the development of incident cardiovascular and cerebrovascular outcomes. METHODS: Participants were 5113 adults aged 18 to 30 years at baseline (1985-1986) from the Coronary Artery Risk Development in Young Adults study, who were followed for more than 25 years. We estimated cumulative lifetime exposure to marijuana using repeated assessments collected at examinations every 2 to 5 years. The primary outcome was incident cardiovascular disease (CVD) through 2013...
February 16, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28207341/visual-loss-and-subsequent-activity-limitations-in-the-elderly-the-french-three-city-cohort
#19
Karine Pérès, Fanny Matharan, Vincent Daien, Virginie Nael, Arlette Edjolo, Isabelle Bourdel-Marchasson, Karen Ritchie, Christophe Tzourio, Cécile Delcourt, Isabelle Carrière
OBJECTIVES: To investigate the relationship between vision and disability in the elderly. METHODS: We used a baseline visual indicator (combining near acuity with Snellen equivalent < 20/30 and self-reported distance visual loss) to explore the association between visual loss and subsequent disability (mobility, instrumental activities of daily living [IADLs], ADLs, and participation restriction) from 1999 to 2007 in 8491 elderly participants of the French Three-City Cohort (Bordeaux, Dijon, and Montpellier)...
February 16, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28207340/impact-of-cvs-pharmacy-s-discontinuance-of-tobacco-sales-on-cigarette-purchasing-2012-2014
#20
Jennifer M Polinski, Benjamin Howell, Michael A Gagnon, Steven M Kymes, Troyen A Brennan, William H Shrank
OBJECTIVES: To assess the impact of CVS Health's discontinuation of tobacco sales on cigarette purchasing. METHODS: We used households' purchasing data to assess rates at which households stopped cigarette purchasing for at least 6 months during September 2014 to August 2015 among 3 baseline groups: CVS-exclusive cigarette purchasers, CVS+ (CVS and other retailers), and other-exclusive (only non-CVS retailers). In state-level analyses using retailers' point-of-sale purchase data, an interrupted time series compared cigarette purchasing before (January 2012 to August 2014) and after (September 2014 to April 2015) tobacco removal in 13 intervention states with CVS market share of at least 15% versus 3 control states with no CVS stores...
February 16, 2017: American Journal of Public Health
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