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https://www.readbyqxmd.com/read/29411999/field-evidence-supporting-conventional-onion-curing-practices-as-a-strategy-to-mitigate-escherichia-coli-contamination-from-irrigation-water
#1
Daniel Wright, Erik Feibert, Stuart Reitz, Clint Shock, Joy Waite-Cusic
The Produce Safety Rule of the U.S. Food Safety Modernization Act includes restrictions on the use of agricultural water of poor microbiological quality. Mitigation options for poor water quality include the application of an irrigation-to-harvest interval of <4 days; however, dry bulb onion production includes an extended irrigation-to-harvest interval (<30 days). This study evaluated conventional curing practices for mitigating Escherichia coli contamination in a field setting. Well water inoculated with rifampin-resistant E...
February 7, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29386815/comparison-of-the-effectiveness-of-tokuyama-and-gc-ii-metal-primer-on-the-bond-strength-of-acrylic-resins-to-ti-6al-7nb
#2
Sunit Kumar Jurel, Niraj Mishra, Pooran Chand, Himanshi Aggarwal, Raghuwar Dayal Singh, Balendra Pratap Singh
Statement of Problem: Because of the toxicity of vanadium in Ti-6Al-4V alloy, next generation of titanium alloys is proposed to focus on niobium-containing alloy, but for clinical applications, it is crucial for this alloy to bond with acrylic resins with or without the use of primers. However, literature was lacking about the effect of primers on bonding of autopolymerizing resins to Ti-6Al-7Nb. Objectives: To evaluate the effect of different metal primers on the shear bond strength of acrylic resin to Ti-6Al-7Nb...
July 2017: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/29385298/head-and-neck-lymphedema-management-evaluation-of-a-therapy-program
#3
Amanda Pigott, Jodie Nixon, Jennifer Fleming, Sandro Porceddu
BACKGROUND: The purpose of this pilot study was to examine a therapeutic intervention for head and neck lymphedema. The 22-week intervention involved therapist-led care and participant self-management. Effectiveness was evaluated using a previously described lymphedema assessment tool, the Assessment of Lymphedema of the Head and Neck (ALOHA) to detect change over the course of the 22 weeks of treatment, and before and after a single treatment session. METHODS: A prospective observational pilot study was conducted with a cohort of 10 participants assessed...
January 31, 2018: Head & Neck
https://www.readbyqxmd.com/read/29377414/optical-clearing-agent-reduces-scattering-of-light-by-the-stratum-corneum-and-modulates-the-physical-properties-of-coenocytes-via-hydration
#4
S-H Lee, S-H Jun, J Yeom, S-G Park, C-K Lee, N-G Kang
BACKGROUND: The interaction between light and the skin determine how the skin looks to the human eye. Light can be absorbed, scattered, and reflected by different components of the skin in a variety of different ways. Here, we focus on the scattering properties of the outmost layer, the stratum corneum (SC). However, we currently have limited methods with which to distinguish the scattering of light by SC from the changes due to other components of the skin. MATERIALS AND METHODS: Dark-field images of tape-striped corneocytes were used in vitro to study the differences in light scattered by the SC and other skin components...
January 28, 2018: Skin Research and Technology
https://www.readbyqxmd.com/read/29364224/a-method-for-obtaining-serial-ultrathin-sections-of-microorganisms-in-transmission-electron-microscopy
#5
Masashi Yamaguchi, Hiroji Chibana
Observing cells and cell components in three dimensions at high magnification in transmission electron microscopy requires preparing serial ultrathin sections of the specimen. Although preparing serial ultrathin sections is considered to be very difficult, it is rather easy if the proper method is used. In this paper, we show a step-by-step procedure for safely obtaining serial ultrathin sections of microorganisms. The key points of this method are: 1) to use the large part of the specimen and adjust the specimen surface and knife edge so that they are parallel to each other; 2) to cut serial sections in groups and avoid difficulty in separating sections using a pair of hair strands when retrieving a group of serial sections onto the slit grids; 3) to use a 'Section-holding loop' and avoid mixing up the order of the section groups; 4) to use a 'Water-surface-raising loop' and make sure the sections are positioned on the apex of the water and that they touch the grid first, in order to place them in the desired position on the grids; 5) to use the support film on an aluminum rack and make it easier to recover the sections on the grids and to avoid wrinkling of the support film; and 6) to use a staining tube and avoid accidentally breaking the support films with tweezers...
January 17, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29297780/fully-3d-printed-multi-material-soft-bio-inspired-whisker-sensor-for-underwater-induced-vortex-detection
#6
Jahan Zeb Gul, Kim Young Su, Kyung Hyun Choi
Bio-mimicking the underwater sensors has tremendous potential in soft robotics, under water exploration and human interfaces. Pinniped are semiaquatic carnivores that use their whiskers to sense food by tracking the vortices left by potential prey. To detect and track the vortices inside the water, a fully 3D printed pinniped inspired multi-material whisker sensor is fabricated and characterized. The fabricated whisker is composed of a polyurethane rod with a length-to-diameter ratio (L/d) of 20:1 with four graphene patterns (length × diameter: 60 × 0...
January 3, 2018: Soft Robotics
https://www.readbyqxmd.com/read/29290820/breaking-the-barrier-potent-anti-inflammatory-activity-following-efficient-topical-delivery-of-etanercept-using-thermoresponsive-nanogels
#7
M Giulbudagian, G Yealland, S Hönzke, A Edlich, B Geisendörfer, B Kleuser, S Hedtrich, M Calderón
Topical administration permits targeted, sustained delivery of therapeutics to human skin. Delivery to the skin, however, is typically limited to lipophilic molecules with molecular weight of < 500 Da, capable of crossing the stratum corneum. Nevertheless, there are indications protein delivery may be possible in barrier deficient skin, a condition found in several inflammatory skin diseases such as psoriasis, using novel nanocarrier systems. METHODS: Water in water thermo-nanoprecipitation; dynamic light scattering; zeta potential measurement; nanoparticle tracking analysis; atomic force microscopy; cryogenic transmission electron microscopy; UV absorption; centrifugal separation membranes; bicinchoninic acid assay; circular dichroism; TNFα binding ELISA; inflammatory skin equivalent construction; human skin biopsies; immunohistochemistry; fluorescence microscopy; western blot; monocyte derived Langerhans cells; ELISA Results: Here, we report the novel synthesis of thermoresponsive nanogels (tNG) and the stable encapsulation of the anti-TNFα fusion protein etanercept (ETR) (~150 kDa) without alteration to its structure, as well as temperature triggered release from the tNGs...
2018: Theranostics
https://www.readbyqxmd.com/read/29286629/environmentally-benign-production-of-stretchable-and-robust-superhydrophobic-silicone-monoliths
#8
Alexander Davis, Salvatore Surdo, Gianvito Caputo, Ilker S Bayer, Athanassia Athanassiou
Superhydrophobic materials hold an enormous potential in sectors as important as aerospace, food industries or biomedicine. Despite this great promise, the lack of environmentally friendly production methods and limited robustness remain the two most pertinent barriers to the scalability, large-area production and widespread use of superhydrophobic materials. In this work, highly robust superhydrophobic silicone monoliths are produced through a scalable and environmentally friendly emulsion technique. It is first found that stable and surfactantless water-in-polydimethylsiloxane (PDMS) emulsions can be formed through mechanical mixing...
December 29, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29277836/kinesio-taping-vs-placebo-in-reducing-pregnancy-related-low-back-pain-a-cross-over-study
#9
Paweł Kalinowski, Anna Krawulska
BACKGROUND Spinal pain affects approximately 45-56% of pregnant women. Kinesio taping (KT) involves application of flexible water-resistant elastic bands on the patient's body, resulting in painless and non-invasive stimulation. The aim of the study was to determine the influence of KT on reduction of low back pain in pregnant women. MATERIAL AND METHODS Kinesio Tex Gold tapes were applied using the muscular-ligament technique and Polovis Plus textile cladding blinded the sample. The starting position for the KT and placebo with lumbar spine flexion with rotation was in the opposite direction to the application...
December 26, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29234070/dielectric-barrier-discharge-based-mercury-free-plasma-uv-lamp-for-efficient-water-disinfection
#10
Ram Prakash, Afaque M Hossain, U N Pal, N Kumar, K Khairnar, M Krishna Mohan
A structurally simple dielectric barrier discharge based mercury-free plasma UV-light source has been developed for efficient water disinfection. The source comprises of a dielectric barrier discharge arrangement between two co-axial quartz tubes with an optimized gas gap. The outer electrode is an aluminium baked foil tape arranged in a helical form with optimized pitch, while the inner electrode is a hollow aluminium metallic rod, hermetically sealed. Strong bands peaking at wavelengths 172 nm and 253 nm, along with a weak band peaking at wavelength 265 nm have been simultaneously observed due to plasma radiation from the admixture of xenon and iodine gases...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29217624/applying-a-vernix-caseosa-based-formulation-accelerates-skin-barrier-repair-by-modulating-lipid-biosynthesis
#11
Walter A Boiten, Tineke Berkers, Samira Absalah, Jeroen van Smeden, Adriana P M Lavrijsen, Joke A Bouwstra
Restoring the lipid homeostasis of the stratum corneum (SC) is a common strategy to enhance the skin barrier function. Here, we used a ceramide containing vernix caseosa (VC) based formulation and were able to accelerate barrier recovery in healthy volunteers. The recovery was examined over 16 days by monitoring trans-epidermal water loss (TEWL) after barrier disruption by tape-stripping. Four skin sites were used to examine the effects of both treatment and barrier recovery. After 16 days, samples were harvested at these sites to examine the SC ceramide composition and the lipid organization...
December 7, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/29150968/effects-of-blue-light-on-inflammation-and-skin-barrier-recovery-following-acute-perturbation-pilot-study-results-in-healthy-human-subjects
#12
Denise Falcone, Natallia E Uzunbajakava, Frank van Abeelen, Gerrit Oversluizen, Malou Peppelman, Piet E J van Erp, Peter C M van de Kerkhof
BACKGROUND/PURPOSE: While growing evidence supports the therapeutic effect of 453 nm blue light in chronic inflammatory skin diseases, data on its effects on acutely perturbed human skin are scarce. In this study, we investigated the impact of 453 nm narrow-band LED light on healthy skin following acute perturbation. METHODS: Tape stripping and histamine iontophoresis were performed on the forearm of 22 healthy volunteers on 2 consecutive weeks. In 1 week, challenges were followed by irradiation for 30 minutes...
November 18, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/29141750/use-of-a-novel-portable-three-dimensional-scanner-to-measure-limb-volume-and-circumference-in-patients-with-filarial-lymphedema
#13
Channa Yahathugoda, Michael J Weiler, Ramakrishna Rao, Lalindi De Silva, J Brandon Dixon, Mirani V Weerasooriya, Gary J Weil, Philip J Budge
The World Health Organization's Global Program to Eliminate Lymphatic Filariasis (LF) has reduced LF transmission worldwide, but millions remain affected by filarial lymphedema. Tools for clinically monitoring lymphedema in developing nations are limited. We tested a novel, portable, infrared three-dimensional (3D) scanner against water displacement (WD) and tape measurement of limb circumference (TMLC) among patients with filarial leg lymphedema in Galle, Sri Lanka. Outcomes were accuracy and reproducibility of scanner measurements...
October 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29127706/peptide-strand-length-controls-the-energetics-of-self-assembly-and-morphology-of-%C3%AE-sheet-fibrils
#14
Robert P W Davies, Binbin Liu, Steven Maude, Lisa M Carrick, Irina Nyrkova, Tom C McLeish, Sarah A Harris
Self-assembling peptides can be used as versatile, natural, and multifunctional building blocks to produce a variety of well-defined nanostructures, materials and devices for applications in medicine and nanotechnology. Here, we concentrate on the 1D self-assembly of de novo designed Px-2 peptide β-strands into anti-parallel β-sheet tapes and higher order aggregates. We study six members of the Px-2 family, ranging from 3 amino acids (aa) to 13 aa in length, using a range of complementary experimental techniques, computer simulation and theoretical statistical mechanics...
November 11, 2017: Biopolymers
https://www.readbyqxmd.com/read/29119963/-what-physiotherapeutic-method-for-the-treatment-of-post-mastectomy-lymphedema-is-the-most-effective
#15
T I Grushina
We have undertaken the search for the publications of interest in the following databases: Scopus, Web of Science, MedLine, The Cochrane Library, CyberLeninka, and Russian science citation index. In addition, we evaluated the effectiveness of the physical agents and procedures having different mechanisms of action of the known factors responsible for the development of post-mastectomy lymphedema. Such agents and procedures include self-massage, manual lymphatic drainage, therapeutic physical exercises, compression bandaging, wearing elastic compression garments, Kinesio Tex taping, pneumatic compression, ultrasonic, electrostatic, extracorporeal shock wave therapy, electrical muscle stimulation, microcurrent and low-intensity laser therapy...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29115817/low-cost-chemical-responsive-adhesive-sensing-chips
#16
Weirui Tan, Liyuan Zhang, Wei Shen
Chemical-responsive adhesive sensing chip is a new low-cost analytical platform, which uses adhesive tape loaded with indicator reagents to detect or quantify the target analytes by directly sticking the tape to the samples of interest. The chemical-responsive adhesive sensing chips can be used with paper to analyse aqueous samples; they can also be used to detect and quantify solid, particulate and powder analytes. The colorimetric indicators become immediately visible as the contact between the functionalized adhesives and target samples was made...
November 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29111549/dynamic-covalent-bonding-triggered-supramolecular-gelation-derived-from-tetrahydroxy-bisurea-derivatives
#17
Suansuan Wang, Kaiqiang Liu, Sheng Gao, Jinqiang Wang, Ravi Kumar Marella, Yu Fang
A new class of bisurea derivatives bearing tetrahydroxy groups have been proven to be non-gelators in water and various organic solvents even under long-term sonication or efficient heating treatment. We found that it is possible to trigger physical gelation behaviour by constructing dynamic covalent bonding. The results show that formation of dynamic covalent bonding between the borate anion and ethanediol substituent in these bisurea derivatives brings about rapid physical gelation at ambient temperature in a mixture of DMSO and water...
November 22, 2017: Soft Matter
https://www.readbyqxmd.com/read/29110736/wireless-intraoral-tongue-control-of-an-assistive-robotic-arm-for-individuals-with-tetraplegia
#18
Lotte N S Andreasen Struijk, Line Lindhardt Egsgaard, Romulus Lontis, Michael Gaihede, Bo Bentsen
BACKGROUND: For an individual with tetraplegia assistive robotic arms provide a potentially invaluable opportunity for rehabilitation. However, there is a lack of available control methods to allow these individuals to fully control the assistive arms. METHODS: Here we show that it is possible for an individual with tetraplegia to use the tongue to fully control all 14 movements of an assistive robotic arm in a three dimensional space using a wireless intraoral control system, thus allowing for numerous activities of daily living...
November 6, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29101702/the-integrative-effect-of-periphyton-biofilm-and-tape-grass-vallisneria-natans-on-internal-loading-of-shallow-eutrophic-lakes
#19
Ying Yang, Wei Chen, Zhiyong Yi, Guofeng Pei
The response of periphyton biofilm and the submerged macrophyte tape grass (Vallisneria natans) to internal loading from eutrophic lake sediments were evaluated in microcosms. The sediments from the littoral zone and center of a lake were selected to carry out the microcosm experiment. To determine how the differences in the periphyton biofilm and V. natans growth alone or in combination, we measured changes in water quality, growth, and TP in the periphyton biofilm and V. natans in microcosms containing these sediments...
November 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29072475/emotion-in-the-wilds-of-nature-the-coherence-and-contagion-of-fear-during-threatening-group-based-outdoors-experiences
#20
Craig L Anderson, Maria Monroy, Dacher Keltner
Emotional expressions communicate information about the individual's internal state and evoke responses in others that enable coordinated action. The current work investigated the informative and evocative properties of fear vocalizations in a sample of youth from underserved communities and military veterans while white-water rafting. Video-taped footage of participants rafting through white-water rapids was coded for vocal and facial expressions of fear, amusement, pride, and awe, yielding more than 1,300 coded expressions, which were then related to measures of subjective emotion and cortisol response...
October 26, 2017: Emotion
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