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https://www.readbyqxmd.com/read/28335274/metallic-nanostructures-based-on-dna-nanoshapes
#1
REVIEW
Boxuan Shen, Kosti Tapio, Veikko Linko, Mauri A Kostiainen, Jari Jussi Toppari
Metallic nanostructures have inspired extensive research over several decades, particularly within the field of nanoelectronics and increasingly in plasmonics. Due to the limitations of conventional lithography methods, the development of bottom-up fabricated metallic nanostructures has become more and more in demand. The remarkable development of DNA-based nanostructures has provided many successful methods and realizations for these needs, such as chemical DNA metallization via seeding or ionization, as well as DNA-guided lithography and casting of metallic nanoparticles by DNA molds...
August 10, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28331904/effectiveness-of-the-rigo-ch%C3%A3%C2%AAneau-versus-boston-style-orthoses-for-adolescent-idiopathic-scoliosis-a-retrospective-study
#2
Miriam K Minsk, Kristen D Venuti, Gail L Daumit, Paul D Sponseller
BACKGROUND: Bracing can effectively treat adolescent idiopathic scoliosis (AIS), but patient outcomes have not been compared by brace type. We compared outcomes of AIS patients treated with Rigo Chêneau orthoses (RCOs) or custom-molded Boston-style thoracolumbosacral orthoses (TLSOs). METHODS: We retrospectively reviewed patient records from one scoliosis center from 1999 through 2014. Patients were studied from initial treatment until skeletal maturity or surgery...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28331347/environmental-triggers-and-avoidance-in-the-management-of-asthma
#3
REVIEW
Clarisse Gautier, Denis Charpin
Identifying asthma triggers forms the basis of environmental secondary prevention. These triggers may be allergenic or nonallergenic. Allergenic triggers include indoor allergens, such as house dust mites (HDMs), molds, pets, cockroaches, and rodents, and outdoor allergens, such as pollens and molds. Clinical observations provide support for the role of HDM exposure as a trigger, although avoidance studies provide conflicting results. Molds and their metabolic products are now considered to be triggers of asthma attacks...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28330333/extraction-and-bioactive-profile-of-the-compounds-produced-by-rhodococcus-sp-vld-10
#4
Bokka Yellamanda, Muvva Vijayalakshmi, Alapati Kavitha, Dorigondla Kumar Reddy, Yenamandra Venkateswarlu
A potent actinobacterial strain isolated from the marine samples of Bheemunipatnam beach, Visakhapatnam, India, was identified as Rhodococcus sp. VLD-10 using the conventional and genomic (16S rRNA) approaches. Bioactive compounds responsible for the antimicrobial activity of the strain were elucidated by cultivating the strain VLD-10 in a modified yeast extract-malt extract-lactose broth followed by subsequent chromatographic and spectroscopic analyses. Extraction, purification, and structural confirmation of five compounds, viz...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329519/tnf-inhibitor-induced-alopecia-an-unusual-form-of-psoriasiform-alopecia-that-breaks-the-renb%C3%A3-k-mold
#5
Lauren N Craddock, Matthew Cooley, Justin O Endo, B Jack Longley, Freddy Caldera
TNF-α-inhibitors are known to induce skin adverseeffects including psoriasis and alopecia areata. Here, wedescribe a unique pattern of hair loss that has psoriaticand alopecia areata-like features. Diagnosis requiresclinical-pathologic correlation and is supportedby increased catagen/telogen hairs, psoriasiformepidermal hyperplasia, perifollicular lymphocyticinfiltrate, and the presence of eosinophils and plasmacells. Although there are no treatment consensusguidelines, management options include stoppingtherapy, switching to a different TNF-α inhibitor orustekinumab (in severe cases), or continuing TNF-αinhibitor therapy with addition of topical, intralesional,or systemic immunosuppressants...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28327599/metal-organic-framework-templated-synthesis-of-ultrasmall-catalyst-loaded-zno-znco2o4-hollow-spheres-for-enhanced-gas-sensing-properties
#6
Won-Tae Koo, Seon-Jin Choi, Ji-Soo Jang, Il-Doo Kim
To achieve the rational design of nanostructures for superior gas sensors, the ultrasmall nanoparticles (NPs) loaded on ternary metal oxide (TMO) hollow spheres (HS) were synthesized by using the polystyrene (PS) sphere template and bimetallic metal-organic framework (BM-MOFs) mold. The zinc and cobalt based zeolite imidazole frameworks (BM-ZIFs) encapsulating ultrasmall Pd NPs (2-3 nm) were assembled on PS spheres at room temperature. After calcination at 450 °C, these nanoscale Pd particles were effectively infiltrated on the surface of ZnO/ZnCo2O4 HSs...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28327533/flexible-piezoresistive-sensors-embedded-in-3d-printed-tires
#7
Md Omar Faruk Emon, Jae-Won Choi
In this article, we report the development of a flexible, 3D printable piezoresistive pressure sensor capable of measuring force and detecting the location of the force. The multilayer sensor comprises of an ionic liquid-based piezoresistive intermediate layer in between carbon nanotube (CNT)-based stretchable electrodes. A sensor containing an array of different sensing units was embedded on the inner liner surface of a 3D printed tire to provide with force information at different points of contact between the tire and road...
March 22, 2017: Sensors
https://www.readbyqxmd.com/read/28326067/uva-photoactivation-of-harmol-enhances-its-antifungal-activity-against-the-phytopathogens-penicillium-digitatum-and-botrytis-cinerea
#8
Gabriela M Olmedo, Luciana Cerioni, María M González, Franco M Cabrerizo, Sabrina I Volentini, Viviana A Rapisarda
Phytopathogenic fungi responsible for post-harvest diseases on fruit and vegetables cause important economic losses. We have previously reported that harmol (1-methyl-9H-pyrido[3,4-b]indol-7-ol) is active against the causal agents of green and gray molds Penicillium digitatum and Botrytis cinerea, respectively. Here, antifungal activity of harmol was characterized in terms of pH dependency and conidial targets; also photodynamic effects of UVA irradiation on the antimicrobial action were evaluated. Harmol was able to inhibit the growth of both post-harvest fungal disease agents only in acidic conditions (pH 5), when it was found in its protonated form...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28325683/biomimetic-scaffolds-with-three-dimensional-undulated-microtopographies
#9
Jonelle Z Yu, Emrullah Korkmaz, Monica I Berg, Philip R LeDuc, O Burak Ozdoganlar
Many human and animal tissues naturally possess three-dimensional (3D) micro-scale geometries enabling certain physiological functions. Absence of these microgeometries in engineered tissues may undermine the effectiveness of corresponding tissue repair and regeneration. This paper introduces a novel approach to create tissue scaffolds with biomimetic 3D undulated microtopographies. The mechanical micromilling technology is used for precise and reproducible fabrication of poly(methyl methacrylate) (PMMA) master molds with 3D undulated microtopographies...
February 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28322510/rational-design-of-a-conductive-collagen-heart-patch
#10
Peter C Sherrell, Artur Cieślar-Pobuda, Malin Silverå Ejneby, Laura Sammalisto, Amy Gelmi, Ebo de Muinck, Johan Brask, Marek J Łos, Mehrdad Rafat
Cardiovascular diseases, including myocardial infarction, are the cause of significant morbidity and mortality globally. Tissue engineering is a key emerging treatment method for supporting and repairing the cardiac scar tissue caused by myocardial infarction. Creating cell supportive scaffolds that can be directly implanted on a myocardial infarct is an attractive solution. Hydrogels made of collagen are highly biocompatible materials that can be molded into a range of shapes suitable for cardiac patch applications...
March 21, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28322363/the-potential-of-self-assembling-peptides-for-enhancement-of-in-vitro-remineralisation-of-white-spot-lesions-as-measured-by-quantitative-laser-fluorescence
#11
Luca Golland, Patrick R Schmidlin, Marc Schätzle
PURPOSE: To test the remineralisation potential of a single application of self-assembling peptides or acidic fluoride solution using quantitative light-induced fluorescence (QLF) in vitro. MATERIALS AND METHODS: Bovine enamel disks were prepared, and white spot lesions were created on one half of the disk with an acidic buffer solution. After demineralisation, disks were allocated into three groups of 11 specimens each. Group A served as a control group and received no treatment...
March 20, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28322210/mycolactone-producing-mycobacterium-marinum-infection-in-captive-hong-kong-warty-newts-and-pathological-evidence-of-impaired-host-immune-function
#12
Wen-Ta Li, Hui-Wen Chang, Victor Fei Pang, Fun-In Wang, Chen-Hsuan Liu, Ting-Yu Chen, Jun-Cheng Guo, Takayuki Wada, Chian-Ren Jeng
A mass mortality event of captive Hong Kong warty newts Paramesotriton hongkongensis with non-granulomatous necrotic lesions occurred in Taipei Zoo, Taiwan, in 2014. Clinically, the sick newts were lethargic and often covered with water mold Saprolegnia sp. on the skin of the body trunk or extremities. Predominant pathological findings were multifocal non-granulomatous necrotic lesions in the liver, spleen, and kidneys and severe skin infection with Saprolegnia sp., with deep invasion and involvement of underlying muscles...
March 21, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28322209/complex-interactive-effects-of-water-mold-herbicide-and-the-fungus-batrachochytrium-dendrobatidis-on-pacific-treefrog-hyliola-regilla-hosts
#13
John M Romansic, James E Johnson, R Steven Wagner, Rebecca H Hill, Christopher A Gaulke, Vance T Vredenburg, Andrew R Blaustein
Infectious diseases pose a serious threat to global biodiversity. However, their ecological impacts are not independent of environmental conditions. For example, the pathogenic fungus Batrachochytrium dendrobatidis (Bd), which has contributed to population declines and extinctions in many amphibian species, interacts with several environmental factors to influence its hosts, but potential interactions with other pathogens and environmental contaminants are understudied. We examined the combined effects of Bd, a water mold (Achlya sp...
March 21, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28319821/application-of-p4-polyphase-codes-pulse-compression-method-to-air-coupled-ultrasonic-testing-systems
#14
Honggang Li, Zhenggan Zhou
Air-coupled ultrasonic testing systems are usually restricted by low signal-to-noise ratios (SNR). The use of pulse compression techniques based on P4 Polyphase codes can improve the ultrasound SNR. This type of codes can generate higher Peak Side Lobe (PSL) ratio and lower noise of compressed signal. This paper proposes the use of P4 Polyphase sequences to code ultrasound with a NDT system based on air-coupled piezoelectric transducer. Furthermore, the principle of selecting parameters of P4 Polyphase sequence for obtaining optimal pulse compression effect is also studied...
March 3, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28319798/cold-plasma-activated-hydrogen-peroxide-aerosol-inactivates-escherichia-coli-o157-h7-salmonella-typhimurium-and-listeria-innocua-and-maintains-quality-of-grape-tomato-spinach-and-cantaloupe
#15
Yunbin Jiang, Kimberly Sokorai, Georgios Pyrgiotakis, Philip Demokritou, Xihong Li, Sudarsan Mukhopadhyay, Tony Jin, Xuetong Fan
The purpose of this study was to investigate the efficacy of aerosolized hydrogen peroxide in inactivating bacteria and maintaining quality of grape tomatoes, baby spinach leaves and cantaloupes. Stem scars and smooth surfaces of tomatoes, spinach leaves, and cantaloupe rinds, inoculated with Escherichia coli O157:H7, Salmonella Typhimurium and Listeria innocua, were treated for 45s followed by additional 30min dwell time with hydrogen peroxide (7.8%) aerosols activated by atmospheric cold plasma. Non-inoculated samples were used to study the effects on quality and native microflora populations...
March 10, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28318407/effectiveness-of-the-custom-mold-room-temperature-vulcanizing-silicone-toe-separator-on-hallux-valgus-a-prospective-randomized-single-blinded-controlled-trial
#16
Navaporn Chadchavalpanichaya, Voraluck Prakotmongkol, Nattapong Polhan, Pitchaya Rayothee, Sirirat Seng-Iad
BACKGROUND: Silicone toe separator is considered as a conservative treatment for hallux valgus. The prefabricated toe separator does not fit all. However, effectiveness in prescription of the custom-mold toe separator is still unknown. OBJECTIVES: To investigate the effect of using a custom-mold room temperature vulcanizing silicone toe separator to decrease hallux valgus angle and hallux pain. The compliances, complications, and satisfactions of toe separator were also explored...
March 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28317355/-three-dimensional-analysis-of-alveolar-changes-of-complete-unilateral-cleft-lip-patients-after-presurgical-nasoalveolar-molding-treatment
#17
Li Hongyi, Kuang Hai, Wang Xiaomeng, Li Dongshuang
OBJECTIVE: This study analyzed the alveolar changes of complete unilateral cleft lip (UCCL) patients after pre-surgical nasoalveolar molding (PNAM) treatment using a three-dimensional method. METHODS: Palate impressions of thirty UCCL patients who underwent PNAM treatment in the Affiliated Stomatology Hospital of Guangxi Medical University were taken pre- and post-PNAM. The plaster impressions were scanned using cone beam computed tomography (CBCT). The DICOM files were exported and 3D models reconstructed in Mimics 15...
August 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28317312/evaluation-of-dose-calculation-accuracy-of-treatment-planning-systems-at-hip-prosthesis-interfaces
#18
David Paulu, Parham Alaei
There are an increasing number of radiation therapy patients with hip prosthesis. The common method of minimizing treatment planning inaccuracies is to avoid radiation beams to transit through the prosthesis. However, the beams often exit through them, especially when the patient has a double-prosthesis. Modern treatment planning systems employ algorithms with improved dose calculation accuracies but even these algorithms may not predict the dose accurately at high atomic number interfaces. The current study evaluates the dose calculation accuracy of three common dose calculation algorithms employed in two commercial treatment planning systems...
March 20, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28317122/an-anthropomorphic-abdominal-phantom-for-deformable-image-registration-accuracy-validation-in-adaptive-radiation-therapy
#19
Yuliang Liao, Linjing Wang, Xiangdong Xu, Haibin Chen, Jiawei Chen, Guoqian Zhang, Huaiyu Lei, Ruihao Wang, Shuxu Zhang, Xuejun Gu, Xin Zhen, Linghong Zhou
PURPOSE: To design and construct a three-dimensional (3D) anthropomorphic abdominal phantom for geometric accuracy and dose summation accuracy evaluations of deformable image registration (DIR) algorithms for adaptive radiation therapy (ART). METHOD: Organ molds, including liver, kidney, spleen, stomach, vertebra and two metastasis tumors, were 3D printed using contours from an ovarian cancer patient. The organ molds were molded with deformable gels made of different mixtures of polyvinyl chloride (PVC) and the softener dioctyl terephthalate...
March 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28316947/analysis-of-the-mechanical-behavior-and-surface-rugosity-of-different-dental-die-materials
#20
Ciro T Niekawa, Simone Kreve, Gisseli Bertozzi A'vila, Gilmar Gil Godoy, J R Eduardo Vieira da Silva, Sergio Candido Dias
AIM: This work evaluated the mechanical and surface behavior of different die materials. The studied materials are polyurethane resin Exakto-Form (Bredent), Gypsum type IV, Fuji Rock EP (Gc), and Durone (Dentsply). MATERIALS AND METHODS: Two metallic matrices molded in polyvinyl siloxane provided 30 cylindrical test specimens for the diametral compression test and 30 hemispherical test specimens for the surface rugosity test. The cylindrical test specimens were submitted to tests of diametral compression strength using a DL2000 universal assay machine, with a load cell of 2000 Kgf and constant speed of 1 mm/min connected to the software...
January 2017: Journal of International Society of Preventive & Community Dentistry
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