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https://www.readbyqxmd.com/read/28645759/microplastics-in-the-sediments-of-terra-nova-bay-ross-sea-antarctica
#1
Cristina Munari, Vanessa Infantini, Marco Scoponi, Eugenio Rastelli, Cinzia Corinaldesi, Michele Mistri
This is the first survey to investigate the occurrence and extent of plastic contamination in sediments collected in Terra Nova Bay (Ross Sea, Antarctica). Plastic debris extracted from 31 samples of sediments were counted, weighted and identified by Fourier-transform infrared spectroscopy (FT-IR). All sediment samples contained plastics: a total of 1661 items of debris (3.14g) were recorded from the 31 samples of sediment. Plastic particles in the samples ranged from 0.3 to 22mm in length. Fibres were the most frequent type of small plastics debris detected...
June 20, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28642927/the-effect-of-grinding-and-or-airborne-particle-abrasion-on-the-bond-strength-between-zirconia-and-veneering-porcelain-a-systematic-review
#2
REVIEW
Karin Lundberg, Lindsey Wu, Evaggelia Papia
Objective: The aim of the study was to make an inventory of current literature on the bond strength between zirconia and veneering porcelain after surface treatment of zirconia by grinding with diamond bur and/or with airborne-particle abrasion. Material and methods: The literature search for the present review was made following recommended guidelines using acknowledged methodology on how to do a systematic review. The electronic databases PubMed, Cochrane Library, and Science Direct were used in the present study...
January 2017: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28640855/the-effect-of-subpressure-on-the-bond-strength-of-resin-to-zirconia-ceramic
#3
Yong-Mei Li, Rui-Shen Zhuge, Zu-Tai Zhang, Yue-Ming Tian, Ning Ding
OBJECTIVE: This study was conducted to investigate the effect of subpressure on the bond strength of resin to zirconia ceramic. The subpressure would create a pressure gradient which could clean out the bubbles in the adhesives or bonding interface. METHODS: Twenty-eight pre-sintered zirconia discs were fabricated. Half of them were polished (group P, n = 14), and the rest were sandblasted (group S, n = 14). After sintered,the surface roughness of the zirconia discs was measured...
2017: PloS One
https://www.readbyqxmd.com/read/28640749/enamel-shear-bond-strength-of-different-primers-combined-with-an-orthodontic-adhesive-paste
#4
Julia H Seeliger, Ute U Botzenhart, Tomasz Gedrange, Karol Kozak, Lukas Stepien, Monika Machoy
AIM: The aim of this study was a comparison of shear bond strength (SBS) on tooth enamel of different primers combined with the adhesive paste Transbond XT. MATERIALS AND METHODS: Forty bovine teeth were used in order to create 40 test blocks. The blocks were divided into four groups of 10 blocks each: group A - sample primer (SP); group B - Opal Seal (OS); group C - Transbond Plus SEP (TSEP); group D - Transbond XT Primer (TXT). After surface preparation and application of the primer, respectively, two stainless steel brackets were fixed on each tooth by using Transbond XT...
June 22, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28640657/retinal-findings-on-oct-in-systemic-conditions
#5
Preeti Patil Chhablani, Vikas Ambiya, Akshay G Nair, Sailaja Bondalapati, Jay Chhablani
PURPOSE: Imaging technology has advanced by leaps and bounds in the recent past and has resulted in a much greater understanding of ocular diseases. The aim of this review article is to summarize optical coherence tomography (OCT) findings of various systemic conditions. METHOD: A systematic literature search of the Medline/PubMed database was performed. English articles up to April 2015 were included. Terms used for search included: Alzheimer's Disease; Multiple Sclerosis; Parkinson's Disease; Behçet's Disease; Schizophrenia; Migraine; Obstructive Sleep Apnea Syndrome; Neurofibromatosis; Sickle Cell Disease; Renal diseases; Lupus Retinopathy; Valsalva Retinopathy; Whiplash Retinopathy; Shaken-Baby Syndrome; Choroidal metastases; Intracranial Hypertension; Drug toxicity; Deferoxamine; Sildenafil; Tamoxifen; Hydroxychloroquine; Chloroquine; Ethambutol; Lead; Sickle Cell Disease; and Thalassemia along with OCT...
June 22, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28638550/shear-bond-strength-of-orthodontic-metal-brackets-to-aged-composite-using-three-primers
#6
Ali Tayebi, Farnoosh Fallahzadeh, Marzieh Morsaghian
BACKGROUND: This study aimed to assess the effect of surface preparation with sandblasting and diamond bur along with the use of three primers on shear bond strength (SBS) of metal brackets to aged composite. MATERIAL AND METHODS: In this in vitro, experimental study, 60 Filtek Z250 composite discs were fabricated (10×2mm), immersed in distilled water for 24 hours and subjected to 5000 thermal cycles. They were randomly divided into two groups (n=30) of sandblasting with aluminum oxide particles for 10 seconds and surface roughening with bur...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28629785/-interest-using-3d-ultrasound-and-mri-fusion-biopsy-for-prostate-cancer-detection
#7
A Marien, A De Castro Abreu, I Gill, A Villers, O Ukimura
INTRODUCTION: The strategic therapy for prostate cancer depends on histo-pronostics data, which could be upgraded by obtaining targeted biopsies (TB) with MRI (magnetic resonance imagery) fusion 3D ultrasound. OBJECTIVES: To compare diagnostic yield of image fusion guided prostate biopsy using image fusion of multi-parametric MRI (mpMRI) with 3D-TRUS. MATERIALS AND METHODS: Between January 2010 and April 2013, 179 consecutive patients underwent outpatient TRUS biopsy using the real-time 3D TRUS tracking system (Urostation™)...
June 16, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28627040/a-facile-approach-toward-scalable-fabrication-of-reversible-shape-memory-polymers-with-bonded-elastomer-microphases-as-internal-stress-provider
#8
Long Fei Fan, Min Zhi Rong, Ming Qiu Zhang, Xu Dong Chen
The present communication reports a novel strategy to fabricate reversible shape-memory polymer that operates without the aid of external force on the basis of a two-phase structure design. The proof-of-concept material, crosslinked styrene-butadiene-styrene block copolymer (SBS, dispersed phase)/polycaprolactone-based polyurethane (PU, continuous phase) blend, possesses a closely connected microphase separation structure. That is, SBS phases are chemically bonded to crosslinked PU by means of a single crosslinking agent and two-step crosslinking process for increasing integrity of the system...
June 19, 2017: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/28624972/sbs-symptoms-in-relation-to-dampness-and-ventilation-in-inspected-single-family-houses-in-sweden
#9
Greta Smedje, Juan Wang, Dan Norbäck, Håkan Nilsson, Karin Engvall
PURPOSE: To investigate the relationships between symptoms compatible with the sick building syndrome (SBS) in adults and building dampness and ventilation in single-family houses. METHODS: Within the Swedish BETSI study, a national sample of single-family houses were inspected by professional building experts, and adults living in the houses answered a questionnaire on SBS. Relationships between building factors and SBS were analysed using logistic regression. RESULTS: Of the respondents, 23% reported having had weekly SBS symptoms during the last three months...
June 17, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28620631/the-effect-of-titanium-tetrafluoride-and-sodium-hypochlorite-on-the-shear-bond-strength-of-methacrylate-and-silorane-based-composite-resins-an-in-vitro-study
#10
Farahnaz Sharafeddin, Fatemeh Koohpeima, Nader Razazan
STATEMENT OF THE PROBLEM: The bond strength of composites with different adhesive systems with dentin is an important factor in long term durability of composite restorations. The effect of titanium tetrafluoride (TiF4) as anti caries agent and sodium hypochlorite (NaOCl) as disinfectant on the shear bond of nanofilled and silorane based composite resins have not been investigated in previous studies. PURPOSE: This study was conducted to determine bond strength between dentin and two composite systems, by means of shear bond test using TiF4 and NaOCl...
June 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28619728/activated-notch-signaling-cascade-is-correlated-with-stem-cell-differentiation-toward-absorptive-progenitors-after-massive-small-bowel-resection-in-a-rat
#11
Igor Sukhotnik, Arnold G Coran, Yulia Pollak, Eviatar Kuhnreich, Drora Berkowitz, Amulya K Saxena
Notch signaling is thought to act to drive cell versification in the lining of the small intestine. The purpose of the present study was to evaluate the role of Notch signaling pathway in stem cell differentiationin the late stages of intestinal adaptation after massive small bowel resection in a rat. Male Sprague-Dawley rats were randomly assigned to one of two experimental groups of 8 rats each: Sham rats underwent bowel transection and re-anastomosis, SBS- rats underwent 75% small bowel resection. Rats were sacrificed on day 14...
June 15, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28616540/the-fate-of-small-side-branches-following-drug-eluting-stent-implantation
#12
Demet Ozkaramanli Gur, Deniz Kumbasar, Refika Hüral, Derviş Oral, Çetin Erol
OBJECTIVES: Although drug eluting stents (DES) have documented convenience in bifurcation lesions, possible unfavorable effects on small side branch ostium (SBO) remain a question. We aimed to explore the effects of DES on small jailed SBs (1.5-2.25 mm) which originated from the lesion on the main vessel and were not treated with either stenting or balloon dilatation. METHODS: Angiographic data of 107 consecutive patients (129 SB) with Medina 1,1,1 or 1,1,0 lesions were evaluated at the time of procedure and at the follow-up...
September 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28610705/anastomotic-ulcers-in-short-bowel-syndrome-new-suggestions-from-a-multidisciplinary-approach
#13
Fabio Fusaro, Renato Tambucci, Erminia Romeo, Pietro Bagolan, Luigi Dall'Oglio, Stefano Ceccarelli, Paola Francalanci, Dominique Hermans, Andrea Pietrobattista, Antonella Diamanti, Filippo Torroni, Paola De Angelis
BACKGROUND AND AIMS: Anastomotic ulceration (AU) is a rare potential life-threatening complication that may occur after intestinal resection. The diagnosis is often delayed after a long-lasting history of refractory anemia. The pathogenesis remains unknown and there are no established therapies. The aim of the study was to analyze the medical history of children with short bowel syndrome (SBS) who were experiencing AU. METHODS: Records of SBS children were retrospectively reviewed...
June 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28608979/is-accepting-circular-reasoning-in-shaken-baby-studies-bad-science-or-misconduct
#14
Niels Lynøe, Göran Elinder, Boubou Hallberg, Måns Rosén, Pia Sundgren, Anders Eriksson
Many of the comments on our systematic literature review on shaken baby syndrome (1) have focused on our criticism of how child protection teams' classification of study cases and controls are used as gold standard and the faulty circular reasoning associated with that (2,3). Some commentators have also questioned how reasonable it is to focus on the triad of retinal hemorrhages, This article is protected by copyright. All rights reserved.
June 13, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28606410/effects-of-silane-and-mdp-based-primers-application-orders-on-zirconia-resin-adhesion-a-tof-sims-study
#15
Shu-Fen Chuang, Li-Li Kang, Yi-Chuan Liu, Jui-Che Lin, Ching-Cheng Wang, Hui-Min Chen, Cheng-Kun Tai
OBJECTIVE: To evaluate the 3-methacryloyloxypropyltrimethoxysilane (MPS)- and 10-methacryloyloxydecyl-dihydrogen-phosphate (MDP)-base primers, in their single or sequential applications, with regard to modifying zirconia surfaces and improving resin-zirconia adhesion. METHODS: Zirconia disks received different treatments: without primer (Zr), MPS-base primer (S), MDP-base primer (M), MPS/MDP mixture (SMmix), MPS followed by MDP (SM), and MDP followed by MPS (MS)...
June 9, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28598403/development-and-positioning-accuracy-assessment-of-single-frequency-precise-point-positioning-algorithms-by-combining-gps-code-pseudorange-measurements-with-real-time-ssr-corrections
#16
Miso Kim, Kwan-Dong Park
We have developed a suite of real-time precise point positioning programs to process GPS pseudorange observables, and validated their performance through static and kinematic positioning tests. To correct inaccurate broadcast orbits and clocks, and account for signal delays occurring from the ionosphere and troposphere, we applied State Space Representation (SSR) error corrections provided by the Seoul Broadcasting System (SBS) in South Korea. Site displacements due to solid earth tide loading are also considered for the purpose of improving the positioning accuracy, particularly in the height direction...
June 9, 2017: Sensors
https://www.readbyqxmd.com/read/28590838/comparative-evaluation-of-effects-of-laser-modalities-on-shear-bond-strengths-of-veneering-porcelains-to-laser-sintered-substructures-an-in-vitro-study
#17
Oguzhan Gorler, Aysegul Goze Saygin
OBJECTIVE: Laser modalities and direct metal laser sintering (DMLS) have a potential to enhance micromechanical bonding between dental super- and infrastructures. However, the effect of different manufacturing methods on the metal-ceramic bond strength needs further evaluation. We investigated the effect of surface treatment with Er:YAG, Nd:YAG, and Ho:YAG lasers on the shear bond strength (SBS) of high-fusion dental porcelains (Vita and G-Ceram) to infrastructures prepared with DMLS in vitro settings...
June 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28590166/teduglutide-induced-stem-cell-function-in-intestinal-repair
#18
Ferenc Sipos, Györgyi Műzes
Malabsorption is a major and common clinical characteristics of short bowel syndrome (SBS) and inflammatory bowel diseases (IBD). Traditional treatment opportunities have focused on decreasing malabsorptive losses via dietary modifications and antisecretory/antidiarrheal agents. However, novel therapeutic modalities aim to enhance the absorptive capacity of the residual bowel by the administration of different intestinal growth factors including teduglutide. In a current study the existence of two distinct functional putative epithelial stem cell subpopulations (i...
June 7, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28582806/prevalence-and-risk-factors-for-complications-in-adult-patients-with-short-bowel-syndrome-receiving-long-term-home-parenteral-nutrition
#19
Guohao Wu, Yi Jiang, Xiaoping Zhu, Dayong Jin, Yusong Han, Jun Han, Zhaohan Wu, Zhaoguang Wu
BACKGROUND AND OBJECTIVES: Short bowel syndrome (SBS) is a complicated and challenging disease where home parenteral nutrition (HPN) is widely used. The complications of long-term HPN-dependent in adult patients with SBS are poorly documented. This study was mainly aimed to assess the prevalence and risk factors of HPNassociated complications in adult patients with SBS, especially the catheter-related sepsis and HPN-associated liver/biliary disorders. METHODS AND STUDY DESIGN: 47 non-malignant adult patients with SBS who received HPN for more than 2 years in our clinical nutrition center were included...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28582453/preparation-characterization-and-performance-evaluation-of-uio-66-analogues-as-stationary-phase-in-hplc-for-the-separation-of-substituted-benzenes-and-polycyclic-aromatic-hydrocarbons
#20
Weiwei Zhao, Chaoyan Zhang, Zengguang Yan, Youya Zhou, Jianrong Li, Yabo Xie, Liping Bai, Lin Jiang, Fasheng Li
UiO-66 analogues are good candidates as stationary phase in HPLC because of their chemical/thermal stability, large surface area, and two cage structures. Here, two UiO-66 analogues, UiO-66-NH2 and UiO-67, were synthesized and used as stationary phase in HPLC to evaluate their performance in the separation of substituted benzenes (SBs) and polycyclic aromatic hydrocarbons (PAHs). The results showed that SBs could be well separated on UiO-66-NH2 column but not on UiO-67 column. Nonetheless, PAHs could be well separated on UiO-67 column...
2017: PloS One
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