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https://www.readbyqxmd.com/read/29148914/marginal-gap-formation-in-approximal-bulk-fill-resin-composite-restorations-after-artificial-ageing
#1
A Peutzfeldt, S Mühlebach, A Lussi, S Flury
The aim of this in vitro study was to investigate the marginal gap formation of a packable "regular" resin composite (Filtek Supreme XTE [3M ESPE]) and two flowable "bulk fill" resin composites (Filtek Bulk Fill [3M ESPE] and SDR [DENTSPLY DeTrey]) along the approximal margins of Class II restorations. In each of 39 extracted human molars (n=13 per resin composite), mesial and distal Class II cavities were prepared, placing the gingival margins below the cemento-enamel junction. The cavities were restored with the adhesive system OptiBond FL (Kerr) and one of the three resin composites...
November 17, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29148811/continuous-pore-spanning-lipid-bilayers-on-silicon-oxide-coated-porous-substrates
#2
Nelli Teske, Jeremias Sibold, Johannes Schumacher, Nikolas K Teiwes, Martin Gleisner, Ingo P Mey, Claudia Steinem
A number of techniques has been developed and analyzed in recent years to generate pore-spanning membranes (PSMs). While quite a number of methods rely on nanoporous substrates, only a few use micrometer-sized pores to be able to individually resolve suspending membranes by means of fluorescence microscopy. To be able to produce PSMs on pores that are micrometer in size, an orthogonal functionalization strategy resulting in a hydrophilic surface is highly desirable. Here, we report on a method to prepare PSMs based on the evaporation of a thin layer of silicon monoxide on top of the porous substrate...
November 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29144212/morphological-and-molecular-characterization-of-two-new-species-of-andracantha-acanthocephala-polymorphidae-from-new-zealand-shags-phalacrocoracidae-and-penguins-spheniscidae-with-a-key-to-the-species
#3
B Presswell, M García-Varela, L R Smales
Two new species of Andracantha (Polymorphidae) are described from the intestine of the shags Leucocarbo chalconotus (Gray) and Phalacrocorax punctatus (Sparrman), and the penguin Eudyptula minor (Forster) from southern South Island, New Zealand. Andracantha leucocarboi n. sp. is distinguished from its congeners by having no genital or ventral trunk spines, but possessing a scattering of small spines between the anterior fields of spines. This is the first record of a species of Andracantha from a penguin. Circumbursal papillae are illustrated in a scanning electron micrograph for the first time in the polymorphids...
November 16, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29142990/the-chemical-chaperone-pba-reduces-er-stress-and-autophagy-and-increases-collagen-iv-%C3%AE-5-expression-in-cultured-fibroblasts-from-men-with-x-linked-alport-syndrome-and-missense-mutations
#4
Dongmao Wang, Mardhiah Mohammad, Yanyan Wang, Rachel Tan, Lydia S Murray, Sharon Ricardo, Hayat Dagher, Tom van Agtmael, Judy Savige
Introduction: X-linked Alport syndrome (OMIM 301050) is caused by COL4A5 missense variants in 40% of families. This study examined the effects of chemical chaperone treatment (sodium 4-phenylbutyrate) on fibroblast cell lines derived from men with missense mutations. Methods: Dermal fibroblast cultures were established from 2 affected men and 3 normals. Proliferation rates were examined, the collagen IV α5 chain localized with immunostaining, and levels of the intra- and extracellular chains quantitated with an in-house enzyme-linked immunosorbent assay...
July 2017: KI Reports
https://www.readbyqxmd.com/read/29140870/a-retrospective-assessment-of-postoperative-bleeding-complications-in-anticoagulated-patients-following-mohs-micrographic-surgery
#5
Robert E Eilers, Alina Goldenberg, Natasha L Cowan, Pallavi Basu, Shang I Brian Jiang
BACKGROUND: A significant number of patients undergoing Mohs micrographic surgery (MMS) for skin cancer are treated with oral anticoagulants. The incidence of postoperative complications associated with new classes of oral anticoagulants remains largely unknown. OBJECTIVE: To determine the incidence of postoperative complications in patients undergoing MMS on both traditional oral anticoagulants and new novel oral anticoagulants. MATERIALS AND METHODS: A single-center retrospective chart review was performed for all patients treated with oral anticoagulants who underwent MMS between July 1, 2012 and June 30, 2015 at University of California, San Diego...
November 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29140864/bupivacaine-as-an-adjunct-to-lidocaine-in-mohs-micrographic-surgery-a-prospective-randomized-controlled-trial
#6
Peggy Chen, Harvey Smith, Carl Vinciullo
BACKGROUND: In Mohs micrographic surgery (MMS), the standard local anesthetic agent used is lignocaine with adrenaline. However, MMS can be prolonged; thus reinjections of local anesthetics are often required. OBJECTIVE: Is 0.5% bupivacaine with 1:200,000 epinephrine a useful adjunctive treatment when compared with the use of 1% lidocaine with 1:100,000 epinephrine in MMS for the nose? METHODS: Participants undergoing MMS received 2.5 mL of 1% lidocaine with 1:100,000 epinephrine before commencement of Stage 1...
November 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/29139265/-stability-optimization-of-puerarin-nanocrystalline-self-stabilizied-pickering-emulsion-by-response-surface-methodology
#7
Ji-Fen Zhang, Jiao Zhang, Fan Wang, Shuai Wang, Mei Wang, Tao Yi
A new Pickering emulsion, puerarin nanocrystalline self-stabilized Pickering emulsion (Pu-NSSPE) was developed. Box-Behnken design was used for optimizing the preparation formulation of Pu-NSSPE to improve its stability, and the effects of concentration of puerarin, volume ratio of water to oil, and pH value of water phase on the stratification index of emulsion, droplet size and drug concentration in emulsion were investigated. Results showed that the optimized Pu-NSSPE could be prepared with the concentration of puerarin of 0...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29137790/thermal-and-morphological-properties-of-nanocomposite-materials-based-on-graphene-oxide-and-l-leucine-containing-poly-benzimidazole-amide-prepared-by-ultrasonic-irradiation
#8
Mohammad Dinari, Elahe Salehi, Amir Abdolmaleki
A new poly(benzimidazole-amide) (PBIA) was fabricated by polycondensation of 1,3-bis(5-amino-1H-benzimidazole-2-yl)benzene with chiral diacid under green media by using tetra-n-butylammonium bromide as a cheap commercially available molten ionic salt at 120°C. The affection of reaction time on the polymer yield and viscosity was tested and optimized for PBIA. Inherent viscosity value of the prepared PBIA under optimized conditions is 0.31dL/g. Then to acquire a uniformly dispersion of graphene oxide (GO) in the PBIA matrix, GO was prepared through strong oxidation procedure...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137780/sonication-affects-the-quantity-and-the-morphology-of-zno-nanostructures-synthesized-on-the-mild-steel-and-changes-the-corrosion-protection-of-the-surface
#9
Zahra Sharifalhoseini, Mohammad H Entezari, Mohsen Shahidi
The several types of sonication methods were applied to access the different morphologies of ZnO nanostructures on the surface of mild steel. To achieve this goal, a sonictor equipped with the probe extender was used as a high intensity ultrasonic apparatus for direct sonication. Furthermore, an ultrasonic bath (low intensity) and a cup-horn system (high intensity) were applied for indirect sonication. To find the effect of the acoustic waves on the ZnO morphology, the micrographs of obtained surfaces were compared to the sample prepared by the conventional method using scanning electron microscopy (SEM)...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137752/microwave-and-ultrasound-assisted-synthesis-of-poly-vinyl-chloride-riboflavin-modified-mwcnts-examination-of-thermal-mechanical-and-morphology-properties
#10
Amir Abdolmaleki, Shadpour Mallakpour, Faezeh Azimi
This study focused on the preparation and investigation of physicochemical features of new poly(vinyl chloride) (PVC) nanocomposites (NCs) including different amounts of carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) functionalized with riboflavin (RIB). Firstly, to increase the hydrophilicity of MWCNTs, the surface of them was functionalized by incorporating and formation of ester groups with RIB as a low cost and environmentally friendly biomolecule through ultrasound and microwave irradiations...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29136932/cell-immobilization-on-3d-printed-matrices-a-model-study-on-propionic-acid-fermentation
#11
Fabricio Dos Santos Belgrano, Olaf Diegel, Nei Pereira, Rajni Hatti-Kaul
This study uses three-dimensional (3D) printing technology as a tool for designing carriers for immobilization of microbial cells for bioprocesses. Production of propionic acid from glucose by immobilized Propionibacterium sp. cells was studied as a model system. For cell adsorption, the 3D-printed nylon beads were added to the culture medium during 3 rounds of cell cultivation. Cell adsorption and fermentation kinetics were similar irrespective of the bead size and lattice structure. The cells bound to 15 mm beads exhibited reduced fermentation time as compared to free cell fermentations; maximum productivity and propionic acid titer of 0...
November 2, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29136165/low-dose-electron-energy-loss-spectroscopy-using-electron-counting-direct-detectors
#12
Alan Maigné, Matthias Wolf
Since the development of parallel electron energy loss spectroscopy (EELS), charge-coupled devices (CCDs) have been the default detectors for EELS. With the recent development of electron-counting direct-detection cameras, micrographs can be acquired under very low electron doses at significantly improved signal-to-noise ratio. In spectroscopy, in particular in combination with a monochromator, the signal can be extremely weak and the detection limit is principally defined by noise introduced by the detector...
November 9, 2017: Microscopy
https://www.readbyqxmd.com/read/29133836/a-study-on-image-quality-in-polarization-resolved-second-harmonic-generation-microscopy
#13
Stefan G Stanciu, Francisco J Ávila, Radu Hristu, Juan M Bueno
Second harmonic generation (SHG) microscopy represents a very powerful tool for tissue characterization. Polarization-resolved SHG (PSHG) microscopy extends the potential of SHG, by exploiting the dependence of SHG signals on the polarization state of the excitation beam. Among others, this dependence translates to the fact that SHG images collected under different polarization configurations exhibit distinct characteristics in terms of content and appearance. These characteristics hold deep implications over image quality, as perceived by human observers or by image analysis methods custom designed to automatically extract a quality factor from digital images...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133090/characterization-of-a-novel-exopolysaccharide-produced-by-lactobacillus-gasseri-fr4-and-demonstration-of-its-in-vitro-biological-properties
#14
Rizwana Parveen Rani, Marimuthu Anandharaj, Abraham David Ravindran
In this study, hetero-exopolysaccharide of Lactobacillus gasseri FR4 isolated from native chicken was produced and purified. The molecular weight of LgEPS was found to be 1.86×10(5)Da. The gas chromatographic analysis revealed that the LgEPS was majorly composed of glucose (65.31%), mannose (16.51%), galactose (8.45%), rhamnose (6.55%) and a small fraction of fucose (3.18%). The functional groups of LgEPS were confirmed by FT-IR analysis. The 1D ((1)H and (13)C) and 2D NMR (COSY and HSQC) analysis showed the presence of 1,6 linked-α-d-Glcp, 1,4 linked-α-d-Galp, 1,3,4 linked-α-d-Manp, 1,3 linked-α-l-Rhap, 1,4 linked-α-l-Fucp, 1,4 linked-β-d-Glcp, and β-d-Galp-1 residues...
November 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29126944/physicochemical-and-microstructural-properties-of-a-novel-edible-film-synthesized-from-balangu-seed-mucilage
#15
Atina Sadeghi-Varkani, Zahra Emam-Djomeh, Gholamreza Askari
This paper reports the synthesis of a novel edible film from Balangu seed mucilage (BSM) as a new carbohydrate source. Optimal formulation of the proposed edible film was found through fabricating several distinct films with different concentrations of BSM and glycerol. The effect of these formulation variables on the physical, mechanical, thermal, barrier, and microstructural properties of the manufactured films was then investigated. Optimal formulation of the BSM edible film was then determined based on the measured mechanical and barrier characteristics...
November 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29125639/chemical-physiochemical-and-microstructural-properties-and-probiotic-survivability-of-fermented-goat-milk-using-polymerized-whey-protein-and-starter-culture-kefir-mild-01
#16
Hao Wang, Cuina Wang, Mu Wang, Mingruo Guo
A set-type fermented goat milk (FGM) using polymerized whey protein (PWP) as main thickening agent and Kefir Mild 01 as starter culture was developed. The FGM with PWP (0.3%, w/v) and pectin (0.2%, w/v) had low syneresis (5.44 ± 0.92%), desirable viscosity (952.86 ± 61.52 mPa⋅s), and hardness (112.57 ± 3.23 g), which were comparable to a fermented cow milk. Sensory evaluation data showed that the FGM with PWP and pectin had higher scores of both flavor (4.41 ± 0.39) and taste (3.72 ± 0.34) than the sample without PWP...
November 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29122582/biorelevant-media-slows-the-solution-mediated-phase-transformation-of-amorphous-spironolactone
#17
Mary S Kleppe, Roy J Haskell, Robin H Bogner
Solution-mediated phase transformation (SMPT) can reduce the high drug concentration expected from amorphous formulations, eliminating the improvement in drug absorption one hoped to gain from this high energy drug state. The differences in SMPT of a supersaturating system were compared in biorelevant media (Fasted State Simulated Intestinal Fluid (FaSSIF) and Fed State Simulated Intestinal Fluid (FeSSIF)) and USP compendial medium, Simulated Intestinal Fluid without pancreatin (SIFsp). Amorphous spironolactone underwent SMPT to the same hydrate of spironolactone in all three media which was confirmed by the decrease in dissolution rates assessed in a flow-through dissolution apparatus, as well as by the appearance of crystals on the amorphous solid surface detected by polarized light microscopy...
November 6, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29121782/imaging-in-cutaneous-surgery
#18
Amanda Levine, Daniel Siegel, Orit Markowitz
Skin cancer is the most commonly diagnosed cancer in the USA. Mohs micrographic surgery is a microscopically controlled surgical technique that excises lateral and deep surgical margins while also sparing function and achieving a good cosmetic outcome. Given the increasing incidence in skin cancer worldwide and its associated treatment costs, techniques are being developed to improve the time and cost efficacy of this procedure. The use of noninvasive imaging, both in vivo and ex vivo, has the potential to increase efficiency of diagnosis and surgical management of skin cancers...
November 10, 2017: Future Oncology
https://www.readbyqxmd.com/read/29118606/callosa-gen-n-a-new-troglobitic-genus-from-southwest-china-araneae-linyphiidae
#19
Qingyuan Zhao, Shuqiang Li
A new linyphiid genus Callosagen. n., with two new species Callosa ciliatasp. n. (♂♀, type species) and Callosa baiseensissp. n. (♂♀), from southwest China are described. Detailed description of genitalic characters and somatic features is provided, as well as light microscopy and SEM micrographs of each species. Callosagen. n. was found in caves in Yunnan and Guangxi, and its copulatory organs are similar to those of Bathyphantes and Porrhomma, but differ greatly in details. The monophyly and placement of Callosagen...
2017: ZooKeys
https://www.readbyqxmd.com/read/29114486/morphological-and-histological-analysis-of-cotylophoron-cotylophorum-treated-with-acacia-concinna
#20
P Priya, L Veerakumari
Objective: Paramphistomosis (stomach fluke disease) is a parasitic infection caused by digenetic trematodes and is considered to be one of the most important parasitic diseases affecting livestock worldwide. This disease is widely prevalent in India, and the highest incidence is reported during monsoon and post-monsoon months. In the present study, in vitro effect of aqueous extract of pods of Acacia concinna (AcP E) on the morphology and the histology of the digenetic trematode Cotylophoron cotylophorum have been investigated...
July 2017: Tropical Parasitology
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