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https://www.readbyqxmd.com/read/29341653/quantum-nonlinear-optics-in-optomechanical-nanoscale-waveguides
#1
Hashem Zoubi, Klemens Hammerer
We show that strong nonlinearities at the few photon level can be achieved in optomechanical nanoscale waveguides. We consider the propagation of photons in cm-scale one-dimensional nanophotonic structures where stimulated Brillouin scattering (SBS) is strongly enhanced by radiation pressure coupling. We introduce a configuration that allows slowing down photons by several orders of magnitude via SBS from sound waves using two pump fields. Slowly propagating photons can then experience strong nonlinear interactions through virtual off-resonant exchange of dispersionless phonons...
September 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341335/osteogenic-efficacy-of-bmp-2-mixed-with-hydrogel-and-bone-substitute-in-peri-implant-dehiscence-defects-in-dogs-16%C3%A2-weeks-of-healing
#2
Jae-Kook Cha, Ui-Won Jung, Daniel S Thoma, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: The objective of this study was to determine the effect of bone morphogenetic protein-2 (BMP-2) mixed with either polyethylene glycol hydrogel or synthetic bone substitute (SBS) on new bone formation in peri-implant dehiscence defects after 16 weeks of healing. MATERIALS AND METHODS: A guided bone regeneration procedure was performed in box-type peri-implant defects that were surgically prepared in six beagle dogs. The following four experimental groups were used (i) control (no graft), (ii) SBS+hydrogel, (iii) SBS+BMP-2/hydrogel and (iv) BMP-2/SBS+hydrogel...
January 17, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29326506/the-bond-strength-of-nanohybrid-and-nanoceramic-composites-to-feldspathic-porcelain
#3
Hatice Özdemir, Nuran Dinçkal Yanikoglu
Background: Porcelain fracture is the most important problem in fixed prosthetic restorations. The replacement of fractured restoraions isn't often prefer by patients and dentists. Intraoral repair of fractured porcelain is a big alternative for patient and dentist. For this reason, dentists try to improve different surface treatments to increase the bond strength between porcelain and repair materials such as composite resins. Aims: The aim of this study was to evaluate the shear bond strength (SBS) of nano-hybrid (Nh...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29297160/beneficial-protective-role-of-endogenous-lactic-acid-bacteria-against-mycotic-contamination-of-honeybee-beebread
#4
Irakli Janashia, Yvan Choiset, Damian Jozefiak, Franck Déniel, Emmanuel Coton, Ali Akbar Moosavi-Movahedi, Nina Chanishvili, Thomas Haertlé
The purpose of this article is to reveal the role of the lactic acid bacteria (LAB) in the beebread transformation/preservation, biochemical properties of 25 honeybee endogenous LAB strains, particularly: antifungal, proteolytic, and amylolytic activities putatively expressed in the beebread environment have been studied. Seventeen fungal strains isolated from beebread samples were identified and checked for their ability to grow on simulated beebread substrate (SBS) and then used to study mycotic propagation in the presence of LAB...
January 3, 2018: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29280097/current-treatment-paradigms-in-pediatric-short-bowel-syndrome
#5
REVIEW
Raghav Chandra, Anil Kesavan
Pediatric short bowel syndrome (SBS) is a serious condition which occurs in children with congenital or acquired reduction in length of the small intestine. SBS results in excessive fluid loss, nutrient malabsorption, electrolyte abnormalities, increased susceptibility to infections, parenteral nutrition associated complications and affects weight gain and growth. In children, SBS is debilitating and uniformly fatal without treatment. The primary goal of treatment is to restore enteral autonomy and reduce long-term dependence on parenteral support by increasing the absorptive potential of the remnant intestine...
December 26, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29279763/influence-of-different-surface-treatments-on-bond-strength-of-novel-cad-cam-restorative-materials-to-resin-cement
#6
Meltem Bektaş Kömürcüoğlu, Elçin Sağırkaya, Ayça Tulga
PURPOSE: To evaluate the effects of different surface treatments on the bond strength of novel CAD/CAM restorative materials to resin cement by four point bending test. MATERIALS AND METHODS: The CAD/CAM materials under investigation were e.max CAD, Mark II, Lava Ultimate, and Enamic. A total of 400 bar specimens (4×1.2×12 mm) (n=10) milled from the CAD/CAM blocks underwent various pretreatments (no pretreatment (C), hydrofluoric acid (A), hydrofluoric acid + universal adhesive (Scotchbond) (AS), sandblasting (Sb), and sandblasting + universal adhesive (SbS))...
December 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29279545/shear-bond-strength-and-microleakage-of-a-new-self-etch-adhesive-pit-and-fissure-sealant
#7
Vinay Pitchika, Sebastian Birlbauer, Meng-Ling Chiang, Christoph Schuldt, Alexander Crispin, Reinhard Hickel, Jan Kühnisch
This study aimed to evaluate the shear bond strength (SBS) and microleakage of a new self-etch adhesive-based fissure sealant (EG) on aprismatic enamel in comparison to conventional fissure sealing with 30 s acid etching (CG). The fissures were sealed according to the manufacturer's instructions. Each group was divided into 3 subgroups: 1-day water storage, 3-month water storage, and 5,000× thermocycling. After measuring SBS using the Ultradent method, failure mode was analyzed. In additional 16 teeth, microleakage was tested using dye penetration method...
December 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29279544/use-of-grape-seed-extract-for-improving-the-shear-bond-strength-of-total-etching-adhesive-to-bleached-enamel
#8
Yingxin Xu, Jianfeng Zhou, Jianguo Tan
This study was to ascertain if grape seed extract (GSE) can restore the shear bond strength (SBS) of total-etching adhesive to enamel immediately after bleaching. Immediately after bleaching with Beyond gel, different concentrations of GSE were applied to the surface of bovine enamel for 1 min before bonding of resin composite with Adper single bond 2 or All-Bond 3 adhesive. SBS values and debonding modes were recorded. Structure of the bonding interface and elements on enamel surface were analyzed by scanning electron microscopy and X-ray photoelectron spectroscopy (XPS)...
December 27, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/29260318/the-utility-of-surveillance-biopsies-in-pediatric-kidney-transplantation
#9
Vikas R Dharnidharka, Neil Vyas, Joseph P Gaut, Leslie Walther, S Paul Hmiel
BACKGROUND: Surveillance biopsies (SBs) are performed in some pediatric kidney transplant programs, based on data obtained in earlier immunosuppressive eras that the treatment of subclinical acute rejection results in better graft survival. The benefit of SBs for patients on modern immunosuppression regimens is unclear. We have therefore evaluated the clinical utility of SBs in a population of children receiving a kidney transplant. METHODS: We have performed SBs at 3, 6 and 12 months post-transplantation as standard of care at our institution since 2013 in patients on a regimen of rabbit anti-thymocyte globulin, tacrolimus, mycophenolate and rapid steroid taper (RST; steroids maintained in some exceptions)...
December 19, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/29249738/factors-contributing-to-the-self-reported-prevalence-of-multiple-chemical-sensitivity-in-public-facility-workers-and-the-general-population-of-korea
#10
Yong Heo, Sang-Hoon Kim, Seok-Ki Lee, Hyoung-Ah Kim
Multiple chemical sensitivity (MCS), an acquired disorder with multiple recurrent symptoms, has been studied for its association with diverse environmental factors. The present study investigated the factors associated with the self-reported prevalence of MCS in public facility workers and the general population in Korea. The Quick Environmental Exposure Sensitivity Inventory (QEESI) questionnaire was obtained from public facility workers (N=530) and the general population (N=500) to determine the prevalence of MCS and the degree of its risk...
2017: Journal of UOEH
https://www.readbyqxmd.com/read/29248998/measuring-what-matters-most-validation-of-the-measure-of-ovarian-symptoms-and-treatment-a-patient-reported-outcome-measure-of-symptom-burden-and-impact-of-chemotherapy-in-recurrent-ovarian-cancer
#11
Madeleine T King, Martin R Stockler, Rachel L O'Connell, Luke Buizen, Florence Joly, Anne Lanceley, Felix Hilpert, Aikou Okamoto, Eriko Aotani, Jane Bryce, Paul Donnellan, Amit Oza, Elisabeth Avall-Lundqvist, Jonathan S Berek, Jalid Sehouli, Amanda Feeney, Dominique Berton-Rigaud, Daniel S J Costa, Michael L Friedlander
PURPOSE: Gynecologic Cancer Intergroup Symptom Benefit Study (GCIG-SBS) Stage 2 aimed to review, revise, and validate a patient-reported outcome measure (PROM), the Measure of Ovarian Symptoms and Treatment concerns (MOST), developed in GCIG-SBS Stage 1 (MOSTv1, 35 items), and document recurrent ovarian cancer (ROC) symptom burden and benefit. METHODS: GCIG-SBS Stage 2 recruited patients with platinum-resistant/refractory ROC (PRR-ROC) or potentially platinum-sensitive ROC with ≥ 3 lines of prior chemotherapy (PPS-ROC ≥ 3)...
December 16, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/29247810/surgical-revascularization-of-the-celiac-artery-for-persistent-intestinal-ischemia-in-short-bowel-syndrome
#12
Arnaud Roussel, Alexandre Nuzzo, Quentin Pellenc, Yves Castier, Romain De Blic, Pierre Cerceau, Célia Boulitrop, Mathieu Coblence, Sonia Aguir, Pierre Mordant, Léon Maggiori, Audrey Huguet, Annie Sibert, Francisca Joly, Olivier Corcos
BACKGROUND AND OBJECTIVES: Without prompt superior mesenteric artery (SMA) revascularization, acute mesenteric ischemia (AMI) frequently leads to death or short bowel syndrome (SBS). In SBS patients, persistent or chronic intestinal ischemia (PII) of the remnant bowel can lead to recurrences of AMI. Since SMA revascularization is sometimes unfeasible, celiac artery (CA) revascularization may improve blood supply to the remnant bowel. The aim of this study was to describe and to assess our experience of the CA revascularization in case of SMA occlusion unsuitable for revascularization in the setting of PII in SBS patients...
January 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29245859/polarization-dependent-brillouin-frequency-shift-fluctuation-induced-by-low-birefringence-in-single-mode-fiber
#13
Chunhua Wang, Yunliang Han, Fufei Pang, Liang Chen, Xiaoyi Bao
The polarization dependent fluctuation of Brillouin frequency shift (BFS) of stimulated Brillouin scattering (SBS) in practical single mode fibers (SMFs) is reported. The phenomenon is actually caused by the interference of the low birefringence in SMF with the SBS spectral polarization spreading of the signal light. The performance of the polarization dependent BFS fluctuation is studied by simulation and confirmed with agreeable experimental results.
December 11, 2017: Optics Express
https://www.readbyqxmd.com/read/29243187/bonding-performance-of-self-adhesive-flowable-composites-to-enamel-dentin-and-a-nano-hybrid-composite
#14
Jana Peterson, Marta Rizk, Monika Hoch, Annette Wiegand
This study aimed to analyze bond strengths of self-adhesive flowable composites on enamel, dentin and nano-hybrid composite. Enamel, dentin and nano-hybrid composite (Venus Diamond, Heraeus Kulzer, Germany) specimens were prepared. Three self-adhesive composites (Constic, DMG, Germany; Fusio Liquid Dentin, Pentron Clinical, USA; Vertise Flow, Kerr Dental, Italy) or a conventional flowable composite (Venus Diamond Flow, Heraeus Kulzer, Germany, etch&rinse technique) were applied to enamel and dentin. Nano-hybrid composite specimens were initially aged by thermal cycling (5000 cycles, 5-55 °C)...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29240194/tens-of-hertz-narrow-linewidth-laser-based-on-stimulated-brillouin-and-rayleigh-scattering
#15
Shihong Huang, Tao Zhu, Guolu Yin, Tianyi Lan, Ligang Huang, Fuhui Li, Yongzhong Bai, Dingrong Qu, Xianbin Huang, Feng Qiu
We proposed and demonstrated a linewidth compression method of a laser based on stimulated Brillouin scattering (SBS) and a Rayleigh backscattering structure (RBS). The relationship between the output SBS laser linewidth and the input pump linewidth was studied theoretically and experimentally. It is shown that the narrower linewidth of the pump laser leads to the narrower bandwidth of the SBS gain and, finally, the bandwidth of the SBS will tend to its intrinsic value as the linewidth of a pump laser narrower than 10 kHz; then the linewidth of an SBS fiber ring laser would tend to 200 Hz...
December 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29235205/the-effect-of-surface-treatment-on-shear-bond-strength-between-y-tzp-and-veneer-ceramic-a-systematic-review-and-meta-analysis
#16
REVIEW
Caroline Cantieri de Mello, Sandro Basso Bitencourt, Daniela Micheline Dos Santos, Aldiéris Alves Pesqueira, Eduardo Piza Pellizzer, Marcelo Coelho Goiato
PURPOSE: The objective of this systematic review with meta-analysis was to evaluate surface treatment in yttria-stabilized tetragonal zirconia polycrystal ceramic (Y-TZP) on the shear bond strength (SBS) values between Y-TZP (core ceramic) and veneer ceramic, compared to untreated specimens. MATERIALS AND METHODS: This review was registered at PROSPERO platform under the number CRD42016036493. The systematic review of the extracted publications was performed to compare the effect of surface treatment on SBS between Y-TZP ceramic and veneering ceramic...
December 13, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29235196/influence-of-particle-and-air-abrasion-moment-on-y-tzp-surface-characterization-and-bond-strength
#17
Samira Branco Martins, Filipe de Oliveira Abi-Rached, Gelson Luis Adabo, Paolo Baldissara, Renata Garcia Fonseca
PURPOSE: To evaluate the influence of particle and air-abrasion on the surface characterization and shear bond strength (SBS) of a Y-TZP ceramic with a resin cement. MATERIALS AND METHODS: Y-TZP specimens were air-abraded with 50 μm alumina particles; 120 μm alumina particles; 30 μm silica-coated alumina particles (Rocatec Soft); 110 μm silica-coated alumina particles (Rocatec Plus). Air-abrasion was performed before (BS); after (AS); before and after (BAS) zirconia sintering...
December 13, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29231791/glucagon-like-peptide-2-and-neoplasia-a-systematic-review
#18
Linea Landgrebe Ring, Nikolaj Nerup, Palle Bekker Jeppesen, Lars Bo Svendsen, Michael Patrick Achiam
Glucagon like peptide-2 is synthesized from enteroendocrine L cells primarily located in the ileum and large intestine. GLP-2 stimulates crypt cell proliferation, increases intestinal blood flow, enhances gut barrier function, induces mucosal healing, and exerts an anti-apoptotic effect. Due to these effects GLP-2 is used in the treatment of short bowel syndrome (SBS). Areas covered The aim of this systematic review was to provide information on the potential risk of intestinal neoplasia in patients receiving treatment with GLP-2...
December 12, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29230136/managing-the-adult-patient-with-short-bowel-syndrome
#19
Carol Rees Parrish, John K DiBaise
Short bowel syndrome (SBS) is a malabsorptive disorder associated with significant morbidity and mortality, reduced quality of life, and high health care costs. Managing the patient with SBS requires an understanding of gastrointestinal anatomy and physiology; a dedicated multidisciplinary team; and the coordination of dietary, fluid, pharmacologic, and comorbid disease management. This article provides an overview of the current state of management of SBS, including a practical approach to optimizing the care and quality of life of the adult patient with SBS...
October 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29214948/measuring-self-soothing-ability-in-patients-with-childhood-trauma-psychometric-evaluation-of-the-self-soothing-scale-in-a-clinical-sample
#20
Thomas Beck, David Riedl, Anne Schöckel, Luise Reddemann, Silvia Exenberger, Astrid Lampe
OBJECTIVES: The regulation of strong emotions is an essential skill for traumatized patients. The present instrument was developed for the measurement of the self-soothing ability in traumatized patients. METHODS: The psychometric properties of the SBS were investigated in a clinical sample of patients with childhood trauma (N = 143). In addition, the study explored the factorial structure, internal consistency, retest reliability, convergent validity, and responsiveness of the instrument...
December 2017: Zeitschrift Für Psychosomatische Medizin und Psychotherapie
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