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https://www.readbyqxmd.com/read/28640993/locking-in-optimal-nanoscale-structure-induced-by-naphthalenediimide-based-polymeric-additive-enables-efficient-and-stable-inverted-polymer-solar-cells
#1
Kwang Hyun Park, Yujin An, Seungon Jung, Hyesung Park, Changduk Yang
Operational stability and high performance are the most critical issues that must be addressed in order to propel and advance the current polymer solar cell (PSC) technology to the next level such as manufacturing and mass production. Herein, we report a high power conversion efficiency (PCE) of 11.2% together with an excellent device stability in PTB7-Th:PC71BM-based PSCs in the inverted structure by introducing the n-type P(NDI2OD-T2) macromolecular additive (>75% PCE retention at high temperature up to 120 °C, >97% PCE retention after 6 months in inert conditions, >93% PCE retention after 2 months in air with encapsulation, and >80% PCE retention after 140 h in air without encapsulation)...
June 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28636611/unmanned-aircraft-systems-as-a-new-source-of-disturbance-for-wildlife-a-systematic-review
#2
Margarita Mulero-Pázmány, Susanne Jenni-Eiermann, Nicolas Strebel, Thomas Sattler, Juan José Negro, Zulima Tablado
The use of small Unmanned Aircraft Systems (UAS; also known as "drones") for professional and personal-leisure use is increasing enormously. UAS operate at low altitudes (<500 m) and in any terrain, thus they are susceptible to interact with local fauna, generating a new type of anthropogenic disturbance that has not been systematically evaluated. To address this gap, we performed a review of the existent literature about animals' responses to UAS flights and conducted a pooled analysis of the data to determine the probability and intensity of the disturbance, and to identify the factors influencing animals' reactions towards the small aircraft...
2017: PloS One
https://www.readbyqxmd.com/read/28636443/personal-protective-equipment-supply-chain-lessons-learned-from-recent-public-health-emergency-responses
#3
Anita Patel, Maryann M D'Alessandro, Karen J Ireland, W Greg Burel, Elaine B Wencil, Sonja A Rasmussen
Personal protective equipment (PPE) that protects healthcare workers from infection is a critical component of infection control strategies in healthcare settings. During a public health emergency response, protecting healthcare workers from infectious disease is essential, given that they provide clinical care to those who fall ill, have a high risk of exposure, and need to be assured of occupational safety. Like most goods in the United States, the PPE market supply is based on demand. The US PPE supply chain has minimal ability to rapidly surge production, resulting in challenges to meeting large unexpected increases in demand that might occur during a public health emergency...
May 2017: Health Security
https://www.readbyqxmd.com/read/28636356/biomimetic-architectured-graphene-aerogel-with-exceptional-strength-and-resilience
#4
Miao Yang, Nifang Zhao, Ying Cui, Weiwei Gao, Qian Zhao, Chao Gao, Hao Bai, Tao Xie
Materials combining lightweight, robust mechanical performances, and multifunctionality are highly desirable for engineering applications. Graphene aerogels have emerged as attractive candidates. Despite recent progresses, the bottleneck remains how to simultaneously achieve both strength and resilience. While multiscale architecture designs may offer a possible route, the difficulty lies in the lack of design guidelines and how to experimentally achieve the necessary structure control over multiple length scales...
June 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28636168/improved-hemodialysis-with-hemocompatible-polyethersulfone-hollow-fiber-membranes-in-vitro-performance
#5
Surendra Kumar Verma, Akshay Modi, Atul Kumar Singh, Rohit Teotia, Jayesh Bellare
We show that addition of nanozeolite (NZ) and vitamin E D-α-Tocopherol polyethylene glycol succinate (TPGS or T) considerably improves the performance of polyethersulfone (PES or P) hollow fiber membrane (HFM) for hemodialysis. Nanocomposite HFMs were manufactured using PES as a polymer, TPGS as an additive and NZ as a filler to give a composite membrane called PT-NZ. HFMs were spun by dry-wet spinning principle based on liquid-liquid phase separation. TPGS and NZ were successfully incorporated in HFMs, as confirmed by EDX elemental mapping...
June 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28635499/hearing-aid-fine-tuning-based-on-dutch-descriptions
#6
Thijs Thielemans, Donné Pans, Michelene Chenault, Lucien Anteunis
OBJECTIVE: The aim of this study was to derive an independent fitting assistant based on expert consensus. Two questions were asked: (1) what (Dutch) terms do hearing impaired listeners use nowadays to describe their specific hearing aid fitting problems? (2) What is the expert consensus on how to resolve these complaints by adjusting hearing aid parameters? DESIGN: Hearing aid dispensers provided descriptors that impaired listeners use to describe their reactions to specific hearing aid fitting problems...
February 20, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28635347/ketamine-and-international-regulations
#7
Yanhui Liao, Yi-Lang Tang, Wei Hao
BACKGROUND: Ketamine is an anesthetic commonly used in low-income countries and has recently been shown to be effective for treatment-resistant depression. However, the illicit manufacturing, trafficking, and nonmedical use of ketamine are increasing globally, and its illicit use poses major public health challenges in many countries. OBJECTIVES: To review the nonmedical use of ketamine in selected countries and its regulatory control. METHODS: We conducted a review of literature identified from searches of the China National Knowledge Infrastructure (CNKI) (1979-2016) and PubMed databases, supplemented by additional references identified by the authors...
February 13, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28631225/definition-of-the-upper-reference-limit-for-thyroglobulin-antibodies-according-to-the-national-academy-of-clinical-biochemistry-guidelines-comparison-of-eleven-different-automated-methods
#8
F D'Aurizio, P Metus, A Ferrari, B Caruso, R Castello, D Villalta, A Steffan, K Gaspardo, F Pesente, N Bizzaro, E Tonutti, S Valverde, C Cosma, M Plebani, R Tozzoli
PURPOSE: In the last two decades, thyroglobulin autoantibodies (TgAb) measurement has progressively switched from marker of thyroid autoimmunity to test associated with thyroglobulin (Tg) to verify the presence or absence of TgAb interference in the follow-up of patients with differentiated thyroid cancer. Of note, TgAb measurement is cumbersome: despite standardization against the International Reference Preparation MRC 65/93, several studies demonstrated high inter-method variability and wide variation in limits of detection and in reference intervals...
December 2017: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/28630959/a-completely-cad-cam-individual-transmission-device-for-electronic-mandible-movement-registration
#9
Karl-Friedrich Krey, Bernd Kordaß, Sebastian Ruge
The connection of a device for the registration of mandibular movements depends on the coupling of the teeth with a paraocclusal adapter. This is normally done by individualizing a prefabricated metal support, either directly on the patient or in the dental laboratory. The goal was to create an individual paraocclusal adapter by means of additive computer-assisted design/computer-assisted manufacturing (CAD/CAM) procedures, and to test it clinically. Starting from intraoral scans of the maxillary and mandibular teeth, an individual paraocclusal adapter was constructed by combining an adapter piece adapted to the tooth and jaw shape with a prefabricated standard part...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28630927/welding-of-3d-printed-carbon-nanotube-polymer-composites-by-locally-induced-microwave-heating
#10
Charles B Sweeney, Blake A Lackey, Martin J Pospisil, Thomas C Achee, Victoria K Hicks, Aaron G Moran, Blake R Teipel, Mohammad A Saed, Micah J Green
Additive manufacturing through material extrusion, often termed three-dimensional (3D) printing, is a burgeoning method for manufacturing thermoplastic components. However, a key obstacle facing 3D-printed plastic parts in engineering applications is the weak weld between successive filament traces, which often leads to delamination and mechanical failure. This is the chief obstacle to the use of thermoplastic additive manufacturing. We report a novel concept for welding 3D-printed thermoplastic interfaces using intense localized heating of carbon nanotubes (CNTs) by microwave irradiation...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630678/on-the-colour-of-wing-scales-in-butterflies-iridescence-and-preferred-orientation-of-single-gyroid-photonic-crystals
#11
Robert W Corkery, Eric C Tyrode
Lycaenid butterflies from the genera Callophrys, Cyanophrys and Thecla have evolved remarkable biophotonic gyroid nanostructures within their wing scales that have only recently been replicated by nanoscale additive manufacturing. These nanostructures selectively reflect parts of the visible spectrum to give their characteristic non-iridescent, matte-green appearance, despite a distinct blue-green-yellow iridescence predicted for individual crystals from theory. It has been hypothesized that the organism must achieve its uniform appearance by growing crystals with some restrictions on the possible distribution of orientations, yet preferential orientation observed in Callophrys rubi confirms that this distribution need not be uniform...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630624/evaluation-of-the-loading-unloading-and-permanent-deformation-of-newly-available-epoxy-resin-coated-ni-ti-wires-using-self-ligating-brackets
#12
Hazel Garro-Piña, María Cristina Jiménez-Cervantes, Ricardo Ondarza-Rovira, Roberto Justus, Salvador García-López
AIM: The purpose of this study was to evaluate the load and unload deflection and permanent deformation of round 0.016'' and rectangular 0.016'' × 0.022'' regular and coated Ni-Ti wires. MATERIALS AND METHODS: Ni-Ti archwires produced by two manufacturers were evaluated. Both regular and coated round and rectangular Ni-Ti wire segments (n = 15) from each group were submitted to a three-point bending test. Both types of wires were evaluated for permanent deformation at the end of a recovery cycle...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28628293/one-step-device-fabrication-of-phosphorene-and-graphene-interdigital-micro-supercapacitors-with-high-energy-density
#13
Han Xiao, Zhong-Shuai Wu, Long Chen, Feng Zhou, Shuanghao Zheng, Wencai Ren, Hui-Ming Cheng, Xinhe Bao
Rational engineering and simplified fabrication of high-energy micro-supercapacitors (MSCs) using graphene and other 2D nanosheets are of great value for flexible and integrated electronics. Here we develop one-step mask-assisted simplified fabrication of high-energy MSCs (PG-MSCs) based on the interdigital hybrid electrode (PG) patterns of stacking high-quality phosphorene nanosheets and electrochemically exfoliated graphene in ionic liquid electrolyte. The hybrid PG films with interdigital patterns were directly manufactured by layer-by-layer deposition of phosphorene and graphene nanosheets with the assistance of a customized interdigital mask, and directly transferred onto a flexible substrate...
June 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28628230/thread-like-cmos-logic-circuits-enabled-by-reel-processed-single-walled-carbon-nanotube-transistors-via-selective-doping
#14
Jae Sang Heo, Taehoon Kim, Seok-Gyu Ban, Daesik Kim, Jun Ho Lee, Jesse S Jur, Myung-Gil Kim, Yong-Hoon Kim, Yongtaek Hong, Sung Kyu Park
The realization of large-area electronics with full integration of 1D thread-like devices may open up a new era for ultraflexible and human adaptable electronic systems because of their potential advantages in demonstrating scalable complex circuitry by a simply integrated weaving technology. More importantly, the thread-like fiber electronic devices can be achieved using a simple reel-to-reel process, which is strongly required for low-cost and scalable manufacturing technology. Here, high-performance reel-processed complementary metal-oxide-semiconductor (CMOS) integrated circuits are reported on 1D fiber substrates by using selectively chemical-doped single-walled carbon nanotube (SWCNT) transistors...
June 19, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28626567/shape-controlled-synthesis-of-porous-tetrametallic-ptagbico-nanoplates-as-highly-active-and-methanol-tolerant-electrocatalyst-for-oxygen-reduction-reaction
#15
Azhar Mahmood, Nanhong Xie, Muhammad Aizaz Ud Din, Faisal Saleem, Haifeng Lin, Xun Wang
Mechanistic control is a powerful means for manufacturing specific shapes of metal nanostructures and optimizing their performance in a variety of applications. Thus, we successfully synthesized multimetallic nanoplates (PtAgBiCo and PtAgBi) by combining the concepts of crystal symmetry, oxidative etching and seed ratio, and tuned their activity, stability and methanol tolerance, as well as Pt utilization, for the oxygen reduction reaction in direct methanol fuel cells. Systematic studies reveal that the formation of PtAgBiCo triangular nanoplates with a high morphological yield (>90%) can be achieved by crystallinity alteration, while electrochemical measurements indicate that the PtAgBiCo nanoplates have superior electrocatalytic activity towards the oxygen reduction reaction...
June 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28626367/towards-the-manufacture-of-megakaryocytes-and-platelets-for-clinical-application
#16
REVIEW
Anja Baigger, Rainer Blasczyk, Constanca Figueiredo
Platelet transfusions are used in standard clinical practice to prevent hemorrhage in patients suffering from thrombocytopenia or platelet dysfunctions. Recently, a constant rise on the demand of platelets for transfusion has been registered. This may be associated with several factors including demographic changes, population aging as well as incidence and prevalence of hematological diseases. In addition, platelet-regenerative properties have been started to be exploited in different areas such as tissue remodeling and anti-cancer therapies...
June 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28624776/mold-control-and-detection-in-biological-drug-substance-manufacturing-facilities-an-industry-perspective
#17
Anita Bawa, Sophia Asefi, Stephanie Ramsey, Christine Arbesser-Rastburg, Mousumi Paul, Francisco Leira, Kim McFarland, Tracy Landeryou, Bindhu Reddy, Marie Murphy, Barbara Daddis, David Baine, Derek Willison-Parry
The biopharmaceutical industry produces non-sterile and/or low-bioburden intermediates and bulk biologics (i.e. Drug Substances) using bioburden controlled processes in accordance to Q7A and Annex 2. In many cases, single mold isolation events have received a high level of scrutiny; the goal of this paper is to challenge this paradigm and provide the rationale for an enhanced control approach that focuses on trending of mold species as microbial indicators rather than on single isolation events. Molds, can also be part (in much lower numbers) of the normal microbial population of a biologics manufacturing facility and, therefore, mold isolation is not an unexpected event in non-aseptic processing environments...
June 16, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28624663/role-of-exercise-electrocardiogram-to-screen-for-t-wave-oversensing-after-implantation-of-subcutaneous-implantable-cardioverter-defibrillator
#18
Muhammad R Afzal, Christopher Evenson, Auroa Badin, Dilesh Patel, Hemant Godara, Michael Essandoh, Toshimasa Okabe, Jaret Tyler, Mahmoud Houmsse, Ralph Augostini, John Hummel, Steven Kalbfleisch, Emile G Daoud, Raul Weiss
BACKGROUND: During early experience with subcutaneous implantable cardioverter defibrillator (S-ICD(TM)), several patients had inappropriate shocks from TWOS during exercise. This prompted some operators to perform routine treadmill exercise test after implantation of S-ICD to screen for TWOS. Meanwhile, improvements have been made in the detection algorithms by the manufacturer. OBJECTIVE: To assess whether routine treadmill exercise post S-ICD(TM) implantation is warranted...
June 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28624535/atp-free-biosynthesis-of-a-high-energy-phosphate-metabolite-fructose-1-6-diphosphate-by-in-vitro-metabolic-engineering
#19
Wei Wang, Meixia Liu, Chun You, Zhimin Li, Yi-Heng Percival Zhang
Fructose 1,6-diphosphate (FDP) is a widely used medicine and is also a precursor of two important three-carbon phosphates -- glyceraldehyde 3-phosphate (GA3P) and dihydroxyacetone phosphate (DHAP) for the biosynthesis of numerous fine chemicals. An in vitro synthetic cofactor-free enzymatic pathway comprised of four hyperthermophilic enzymes was designed to produce FDP from starch and pyrophosphate. All of four hyperthermophilic enzymes (i.e., alpha-glucan phosphorylase from Thermotaga maritima, phosphoglucomutase from Thermococcus kodakarensis, glucose 6-phosphate isomerase from Thermus thermophilus, and pyrophosphate phosphofructokinase from T...
June 14, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28623631/effect-of-in-vitro-enzymatic-degradation-on-3d-printed-poly-%C3%AE%C2%B5-caprolactone-scaffolds-morphological-chemical-and-mechanical-properties
#20
Joana Ferreira, Antonio Gloria, Stefania Cometa, Jorge F J Coelho, Marco Domingos
BACKGROUND: In recent years, the tissue engineering (TE) field has significantly benefited from advanced techniques such as additive manufacturing (AM), for the design of customized 3D scaffolds with the aim of guided tissue repair. Among the wide range of materials available to biomanufacture 3D scaffolds, poly(ε-caprolactone) (PCL) clearly arises as the synthetic polymer with the greatest potential, due to its unique properties - namely, biocompatibility, biodegradability, thermal and chemical stability and processability...
June 15, 2017: Journal of Applied Biomaterials & Functional Materials
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