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https://www.readbyqxmd.com/read/28920629/in-situ-construction-of-a-heterojunction-over-the-surface-of-a-sandwich-structure-semiconductor-for-highly-efficient-photocatalytic-h2-evolution-under-visible-light-irradiation
#1
Zheguan Lin, Jinjin Lin, Lingting Huang, Xiaoyan Zhang, Ying Wang, Zizhong Zhang, Huaxiang Lin, Xuxu Wang
Developing a heterostructure on the surface of a "sandwich" structure semiconductor is essential for full utilization of its heterojunction function and hence for designing efficient solar energy conversion systems. Here, we show that 2D-2D MoS2/MnSb2S4 heterostructure composites are designed for the first time and successfully synthesized by a simple in situ calcination pathway. Under visible light irradiation, the ca. 3.3 wt% MoS2/MnSb2S4 samples exhibited the highest activity for H2 evolution, which was 7...
September 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28918445/pre-emptive-intestinal-transplant-the-surgeon-s-point-of-view
#2
REVIEW
Augusto Lauro, Ignazio R Marino, Kishore R Iyer
Pre-emptive transplantation is a well-established practice for certain types of end-organ failure such as in the use of kidney transplantation. For irreversible intestinal failure, total parenteral nutrition (TPN) remains the gold standard, due to the suboptimal long-term results of intestinal transplantation. As such, the only role for pre-emptive transplantation, if at all, will be for patients identified to be at high risk of complications and mortality while on definitive long-term TPN. In these patients, the timing of early listing and transplantation could become life-saving, taking into account that mortality on the waiting list is still the highest for intestinal candidates...
September 16, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28904955/dental-hygiene-and-orthodontics-effect-of-ultrasonic-instrumentation-on-bonding-efficacy-of-different-lingual-orthodontic-brackets
#3
Andrea Scribante, Maria Francesca Sfondrini, Vittorio Collesano, Gaia Tovt, Luisa Bernardinelli, Paola Gandini
Dental hygienists are often faced with patients wearing lingual orthodontic therapy, as ultrasonic instrumentation (UI) is crucial for oral health. As the application of external forces can lead to premature bonding failure, the aim of this study was to evaluate the effect of UI on shear bond strength (SBS) and on adhesive remnant index (ARI) of different lingual orthodontic brackets. 200 bovine incisors were divided into 10 groups. Four different lingual (STB, Ormco; TTR, Rocky Mountain Orthodontics; Idea, Leone; 2D, Forestadent) and vestibular control (Victory, 3M) brackets were bonded...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28902249/effect-of-surface-treatment-of-prefabricated-teeth-on-shear-bond-strength-of-orthodontic-brackets
#4
Marina Cumerlato, Eduardo Martinelli de Lima, Leandro Berni Osorio, Eduardo Gonçalves Mota, Luciane Macedo de Menezes, Susana Maria Deon Rizzatto
Objective: The aim of this in vitro study was to evaluate and compare the effects of grinding, drilling, sandblasting, and ageing prefabricated teeth (PfT) on the shear bond strength (SBS) of orthodontic brackets, as well as the effects of surface treatments on the adhesive remnant index (ARI). Methods: One-hundred-ninety-two PfT were divided into four groups (n = 48): Group 1, no surface treatment was done; Group 2, grinding was performed with a cylindrical diamond bur; Group 3, two drillings were done with a spherical diamond bur; Group 4, sandblasting was performed with 50-µm aluminum oxide...
July 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28899756/stability-based-sorting-the-forgotten-process-behind-not-only-biological-evolution
#5
Jan Toman, Jaroslav Flegr
Natural selection is considered to be the main process that drives biological evolution. It requires selected entities to originate dependent upon one another by the means of reproduction or copying, and for the progeny to inherit the qualities of their ancestors. However, natural selection is a manifestation of a more general persistence principle, whose temporal consequences we propose to name "stability-based sorting" (SBS). Sorting based on static stability, i.e., SBS in its strict sense and usual conception, favours characters that increase the persistence of their holders and act on all material and immaterial entities...
September 9, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28886950/influence-of-thermo-mechanical-cycling-on-porcelain-bonding-to-cobalt-chromium-and-titanium-dental-alloys-fabricated-by-casting-milling-and-selective-laser-melting
#6
Maja Antanasova, Andraž Kocjan, Janez Kovač, Borut Žužek, Peter Jevnikar
PURPOSE: The aim has been to determine the effect of thermo-mechanical cycling on shear-bond-strength (SBS) of dental porcelain to Co-Cr and Ti-based alloys fabricated by casting, computer-numerical-controlled milling, and selective-laser-melting (SLM). METHODS: Seven groups (n=22/group) of metal cylinders were fabricated by casting (Co-Cr and commercially pure-cpTi), milling (Co-Cr, cpTi, Ti-6Al-4V) or by SLM (Co-Cr and Ti-6Al-4V) and abraded with airborne-particles...
September 5, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28884062/high-speed-dynamic-mode-atomic-force-microscopy-imaging-of-polymers-an-adaptive-multiloop-mode-approach
#7
Juan Ren, Qingze Zou
Adaptive multiloop-mode (AMLM) imaging to substantially increase (over an order of magnitude) the speed of tapping-mode (TM) imaging is tested and evaluated through imaging three largely different heterogeneous polymer samples in experiments. It has been demonstrated that AMLM imaging, through the combination of a suite of advanced control techniques, is promising to achieve high-speed dynamic-mode atomic force microscopy imaging. The performance, usability, and robustness of the AMLM in various imaging applications, however, is yet to be assessed...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28875148/long-term-bond-strength-of-two-benzalkonium-chloride-modified-adhesive-systems-to-eroded-dentin
#8
Simon Flury, Adrian Lussi, Anne Peutzfeldt
This study investigated the effect of benzalkonium chloride (BAC) modification of two adhesive systems on long-term bond strength to normal and artificially eroded dentin. A total of 128 extracted human molars were sectioned and the buccal and oral surfaces of each molar were ground until the dentin. One half was left untreated (normal dentin) while the other half underwent artificial erosion. Resin composite was bonded to the buccal or oral surface following treatment with Adper Scotchbond 1XT or OptiBond FL without or with 1% BAC incorporation...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28872726/bond-strength-of-resin-cement-and-glass-ionomer-to-nd-yag-laser-treated-zirconia-ceramics
#9
Nafiseh Asadzadeh, Foojan Ghorbanian, Farzaneh Ahrary, Hamidreza Rajati Haghi, Reza Karamad, Amir Yari, Abdollah Javan
PURPOSE: To investigate the effect of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on the surface properties and bond strength of zirconia ceramics. MATERIALS AND METHODS: Forty-eight zirconia ceramic pieces (4 × 4 × 1 mm(3) ) were divided into four groups according to surface treatment as follows: two control groups (no treatment) for resin bonding (CRC) and glass ionomer (GI) bonding (CGC); two laser treatment groups (Nd:YAG irradiation, 3 W, 200 MJ, 10 Hz, 180 μs) for resin bonding (LRC) and GI bonding (LGC)...
September 5, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28871599/shaken-baby-syndrome-and-the-risk-of-losing-scientific-scrutiny
#10
REVIEW
M Rosén, N Lynøe, G Elinder, B Hallberg, P Sundgren, A Eriksson
A systematic review of shaken baby syndrome by the Swedish Agency for Health Technology Assessment and Assessment of Social Services generated numerous reactions from professional organisations, even before the review was published. There was also a lively debate after a paper summarising its findings were published in Acta Paediatrica The various responses are worth debating further, as they raise several important issues with regard to research ethics, having an open debate and publishing scientific findings...
September 4, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28861744/bond-durability-of-universal-adhesive-to-bovine-enamel-using-self-etch-mode
#11
Soshi Suzuki, Toshiki Takamizawa, Arisa Imai, Akimasa Tsujimoto, Keiichi Sai, Masayuki Takimoto, Wayne W Barkmeier, Mark A Latta, Masashi Miyazaki
OBJECTIVES: The purpose of this study was to examine the enamel bond durability of universal adhesives in the self-etch mode under 2-year water storage and thermal cycling conditions. MATERIALS AND METHODS: Three commercially available universal adhesives and a gold standard two-step self-etch adhesive were used. Ten specimens of bovine enamel were prepared per test group, and shear bond strength (SBS) was measured to determine the bonding durability after thermal cycling (TC) or long-term water storage (WS)...
August 31, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28858144/exploring-an-unknown-territory-sleeping-beauties-in-the-nursing-research-literature
#12
Peter Kokol, Helena Blažun Vošner, Joeri Vermeulen
BACKGROUND: Sleeping Beauties (SBs) are publications that are scarcely cited in the years immediately following publication but then suddenly become highly cited later. Such publications have unique citation patterns and can reveal important developments in the field in which they appear. OBJECTIVES: No holistic analysis of nursing SBs has been done yet. The aim of this study was to identify and analyze the SB phenomenon in the nursing research literature. METHOD: The corpus for the nursing SB identification was harvested from the Web of Science Core Collection (Thomas Reuters) for the period 1934-2015...
September 2017: Nursing Research
https://www.readbyqxmd.com/read/28842292/using-game-authoring-platforms-to-develop-screen-based-simulated-functional-assessments-in-persons-with-executive-dysfunction-following-traumatic-brain-injury
#13
David Martínez-Pernía, Javier Núñez-Huasaf, Ángel Del Blanco, Amparo Ruiz-Tagle, Juan Velásquez, Mariela Gomez, Carl Robert Blesius, Agustin Ibañez, Baltasar Fernández-Manjón, Andrea Slachevsky
The assessment of functional status is a critical component of clinical neuropsychological evaluations used for both diagnostic and therapeutic purposes in patients with cognitive brain disorders. There are, however, no widely adopted neuropsychological tests that are both ecologically valid and easily administered in daily clinical practice. This discrepancy is a roadblock to the widespread adoption of functional assessments. In this paper, we propose a novel approach using a serious game authoring platform (eAdventure) for creating screen-based simulated functional assessments...
August 22, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28838588/service-provision-for-stroke-the-greek-paradox
#14
Antigoni Fountouki, Dimitrios Theofanidis
Stroke remains a leading cause of mortality, as well as of subsequent serious long-term physical and mental morbidity. This places special demands for updated clinical excellence and optimum organization of stroke care services. Stroke units have been shown to improve patient outcomes. Thus, many western countries have developed and implemented sophisticated stroke facilities and corresponding public awareness strategies. These cannot be easily "translated" in Greece due to special features on the hospital administration system such as a unique rotation system for acute admissions and long-standing austerity...
September 2017: Journal of Vascular Nursing: Official Publication of the Society for Peripheral Vascular Nursing
https://www.readbyqxmd.com/read/28835844/polar-bears-experience-skeletal-muscle-atrophy-in-response-to-food-deprivation-and-reduced-activity-in-winter-and-summer
#15
John P Whiteman, Henry J Harlow, George M Durner, Eric V Regehr, Bryan C Rourke, Manuel Robles, Steven C Amstrup, Merav Ben-David
When reducing activity and using stored energy during seasonal food shortages, animals risk degradation of skeletal muscles, although some species avoid or minimize the resulting atrophy while experiencing these conditions during hibernation. Polar bears may be food deprived and relatively inactive during winter (when pregnant females hibernate and hunting success declines for other demographic groups) as well as summer (when sea ice retreats from key foraging habitats). We investigated muscle atrophy in samples of biceps femoris collected from free-ranging polar bears in the Southern Beaufort Sea (SBS) throughout their annual cycle...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28834539/butyrate-stimulates-the-growth-of-human-intestinal-smooth-muscle-cells-by-activation-of-yes-associated-protein
#16
Li-Na Dai, Jun-Kai Yan, Yong-Tao Xiao, Jie Wen, Tian Zhang, Ke-Jun Zhou, Yang Wang, Wei Cai
Intestinal smooth muscle cells play a critical role in the remodeling of intestinal structure and functional adaptation after bowel resection. Recent studies have shown that supplementation of butyrate (Bu) contributes to the compensatory expansion of a muscular layer of the residual intestine in a rodent model of short-bowel syndrome (SBS). However, the underlying mechanism remains elusive. In this study, we found that the growth of human intestinal smooth muscle cells (HISMCs) was significantly stimulated by Bu via activation of Yes-Associated Protein (YAP)...
August 23, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28828156/comparative-evaluation-of-shear-bond-strength-of-universal-dental-adhesives-an-in-vitro-study
#17
Arun Jayasheel, Nandini Niranjan, Hemanthkumar Pamidi, Mayuri B Suryakanth
BACKGROUND: Patient demand for tooth colored restorations and desire for minimally invasive restorations have made composites an indispensable part of the restorative process. An important factor affecting the intra-oral performance of composite restorations is bonding. MATERIAL AND METHODS: Ninty six freshly extracted molar teeth were collected and occlusal 3mm is removed using a diamond disc to expose dentine. Following with samples were divided in to two main groups (self-etch & total etch)...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28828149/comparative-evaluation-of-orthodontic-bracket-base-shapes-on-shear-bond-strength-and-adhesive-remnant-index-an-in-vitro-study
#18
Dennis Pham, Prashanti Bollu, Kishore Chaudhry, Karthikeyan Subramani
BACKGROUND: The objective of this study was to evaluate the effect of orthodontic bracket base shape on shear bond strength and adhesive remnant index. MATERIAL AND METHODS: In this in vitro study using 140 bovine incisors, shear bond strength (SBS) of brackets with different base shapes (rectangle, flower, round, heart, diamond, star, and football) were measured with an Instron testing machine and tested until bond failure. Adhesive Remnant Index (ARI) scoring was evaluated after debonding to evaluate the location of bond failure...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28828147/effect-of-various-dentin-disinfection-protocols-on-the-bond-strength-of-resin-modified-glass-ionomer-restorative-material
#19
Anand Sekhar, Akansha Anil, Manuel S Thomas, Kishore Ginjupalli
BACKGROUND: Disinfection of dentin surface prior to any restorative therapy is important for the longevity of the treatment rendered. However, these dentin disinfection methods should itself not interfere with the adhesion of the restorative material. Therefore the aim of this study was to determine the effect of various dentin disinfection protocols on the shear bond strength (SBS) of resin modified glass ionomer cement (RMGIC). MATERIAL AND METHODS: The occlusal surface of 40 extracted premolars were trimmed to obtain a flat dentinal surface and was randomly divided into four groups...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28827911/short-bowel-syndrome-an-uncommon-clinical-entity-and-a-therapeutic-challenge-our-experience-and-review-of-literature
#20
Lalit Aggarwal, Swati Sattavan, Romesh Lal, Deborshi Sharma, Saurabh Borgharia, Nishit Shrivastava, Rama Alagappan, Ranvir Singh
Short bowel syndrome (SBS), one of the commonest types of intestinal failure, usually secondary to extensive bowel resection, traditionally has been associated with a high mortality rate and hence a big challenge for the treating surgeons. It requires comprehensive clinical care to minimise the morbidities and mortality associated with the condition. We report a retrospective review of a series of seven patients with SBS, who presented at our surgical emergency within a period of 1 year and their outcome so as to encourage others in managing such a challenge with more positive mindsets...
August 2017: Indian Journal of Surgery
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