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https://www.readbyqxmd.com/read/28650942/open-supracondylar-intercondylar-fractures-of-the-femur-treatment-with-taylor-spatial-frame
#1
Francesco Sala, Ahmed M Thabet, Paolo Capitani, Federico Bove, Amr A Abdelgawad, Giovanni Lovisetti
OBJECTIVES: Evaluate the Taylor spatial frame (TSF) for primary and definitive fixation of open supracondylar-intracondylar femoral (SIF) fractures. DESIGN: Retrospective. SETTING: Level I trauma center. PATIENTS: Subset of 20 SIF open fractures treated with TSF extracted from a consecutive series of 80 SIF fractures treated between 2007 and 2013. INTERVENTION: Eighteen (90%) fractures underwent definitive fixation with the TSF; 2 were treated primarily within 24 hours of injury...
June 15, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28649998/uniform-electroactive-fibre-like-micelle-nanowires-for-organic-electronics
#2
Xiaoyu Li, Piotr J Wolanin, Liam R MacFarlane, Robert L Harniman, Jieshu Qian, Oliver E C Gould, Thomas G Dane, John Rudin, Martin J Cryan, Thomas Schmaltz, Holger Frauenrath, Mitchell A Winnik, Charl F J Faul, Ian Manners
Micelles formed by the self-assembly of block copolymers in selective solvents have attracted widespread attention and have uses in a wide variety of fields, whereas applications based on their electronic properties are virtually unexplored. Herein we describe studies of solution-processable, low-dispersity, electroactive fibre-like micelles of controlled length from π-conjugated diblock copolymers containing a crystalline regioregular poly(3-hexylthiophene) core and a solubilizing, amorphous regiosymmetric poly(3-hexylthiophene) or polystyrene corona...
June 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28649112/exploding-the-black-box-personal-computing-the-notebook-battery-crisis-and-postindustrial-systems-thinking
#3
Matthew N Eisler
Historians of science and technology have generally ignored the role of power sources in the development of consumer electronics. In this they have followed the predilections of historical actors. Research, development, and manufacturing of batteries has historically occurred at a social and intellectual distance from the research, development, and manufacturing of the devices they power. Nevertheless, power source technoscience should properly be understood as an allied yet estranged field of electronics. The separation between the fields has had important consequences for the design and manufacturing of mobile consumer electronics...
2017: Technology and Culture
https://www.readbyqxmd.com/read/28645891/health-app-use-among-individuals-with-symptoms-of-depression-and-anxiety-a-survey-study-with-thematic-coding
#4
Caryn Kseniya Rubanovich, David C Mohr, Stephen M Schueller
BACKGROUND: Researchers have largely turned to commercial app stores, randomized trials, and systematic reviews to make sense of the mHealth landscape. Few studies have approached understanding by collecting information from target end users. The end user perspective is critical as end user interest in and use of mHealth technologies will ultimately drive the efficacy of these tools. OBJECTIVE: The purpose of this study was to obtain information from end users of mHealth technologies to better understand the physical and mental health apps people use and for what purposes...
June 23, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28645067/using-a-detailed-inventory-of-a-large-wastewater-treatment-plant-to-estimate-the-relative-importance-of-construction-to-the-overall-environmental-impacts
#5
Serni Morera, Lluís Corominas, Miquel Rigola, Manel Poch, Joaquim Comas
The aim of this work is to quantify the relative contribution to the overall environmental impact of the construction phase compared to the operational phase for a large conventional activated sludge wastewater treatment plant (WWTP). To estimate these environmental impacts, a systematic procedure was designed to obtain the detailed Life Cycle Inventories (LCI) for civil works and equipment, taking as starting point the construction project budget and the list of equipment installed at the Girona WWTP, which are the most reliable information sources of materials and resources used during the construction phase...
June 2, 2017: Water Research
https://www.readbyqxmd.com/read/28642437/human-in-the-loop-optimization-of-exoskeleton-assistance-during-walking
#6
Juanjuan Zhang, Pieter Fiers, Kirby A Witte, Rachel W Jackson, Katherine L Poggensee, Christopher G Atkeson, Steven H Collins
Exoskeletons and active prostheses promise to enhance human mobility, but few have succeeded. Optimizing device characteristics on the basis of measured human performance could lead to improved designs. We have developed a method for identifying the exoskeleton assistance that minimizes human energy cost during walking. Optimized torque patterns from an exoskeleton worn on one ankle reduced metabolic energy consumption by 24.2 ± 7.4% compared to no torque. The approach was effective with exoskeletons worn on one or both ankles, during a variety of walking conditions, during running, and when optimizing muscle activity...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28640992/crystalline-organic-pigment-based-field-effect-transistors
#7
Haichang Zhang, Ruonan Deng, Jing Wang, Xiang Li, Yu-Ming Chen, Kewei Liu, Clinton J Taubert, Stephen Z D Cheng, Yu Zhu
Three conjugated pigment molecules with fused hydrogen bonds, 3,7-diphenylpyrrolo[2,3-f]indole-2,6(1H,5H)-dione (BDP), (E)-6,6'-dibromo-[3,3'-biindolinylidene]-2,2'-dione (IIDG), and 3,6-di(thiophen-2-yl)-2,5-dihydropyrrolo-[3,4-c]pyrrole-1,4-dione (TDPP), were studied in this work. The insoluble pigment molecules were functionalized with tert-butoxylcarbonyl (t-Boc) groups to form soluble pigment precursors (BDP-Boc, IIDG-Boc, and TDPP-Boc) with latent hydrogen bonding. The single crystals of soluble pigment precursors were obtained...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28640594/biomedical-diagnostics-enabled-by-integrated-organic-and-printed-electronics
#8
Termeh Ahmadraji, Laura Gonzalez-Macia, Tapio Ritvonen, Andreas Willert, Saara Tuurala, Satu Ylimaula, David Donaghy, Mika Suhonen, Dave Smart, Vitaly Efremov, Aoife Morrin, Reinhard R Baumann, Munira Raja, Antti Kemppainen, Anthony J Killard
Organic and printed electronics integration has the potential to revolutionise many technologies, including biomedical diag-nostics. This work demonstrates the successful integration of multiple printed electronic functionalities into a single device capable of the measurement of hydrogen peroxide, and total cholesterol. The single-use device employed printed electrochemical sen-sors for hydrogen peroxide electroreduction integrated with printed electrochromic display and battery. The system was driven by a conventional electronic circuit designed to illustrate the complete integration of silicon ICs via pick and place, or using organic electronic circuits...
June 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28639331/top-down-integration-of-molybdenum-disulfide-transistors-with-wafer-scale-uniformity-and-layer-controllability
#9
Mao-Lin Shi, Lin Chen, Tian-Bao Zhang, Jing Xu, Hao Zhu, Qing-Qing Sun, David Wei Zhang
The lack of stable and efficient techniques to synthesize high-quality large-area thin films is one of the major bottlenecks for the real-world application of the 2D transition metal dichalcogenides. In this work, the growth of molybdenum disulfide (MoS2 ) on sapphire substrates by sulfurizing the MoO3 film deposited by atomic layer deposition (ALD) is reported. The advantages of the ALD method can be well inherited, and the synthesized MoS2 films exhibit excellent layer controllability, wafer-scale uniformity, and homogeneity...
June 22, 2017: Small
https://www.readbyqxmd.com/read/28636475/surgical-aortic-valve-replacement-for-stenosis-of-tavi-device
#10
M Sooknunden, M A Radermecker, J O Defraigne, Vincent Tchana-Sato
We here report the case of a stenosis of the CoreValve(®) system due to reduced mobility of prosthesis cusps for which a surgical replacement of the aortic valve was proposed. The exact mechanism leading to this impaired mobility of the leaflets is yet to be determined. We also underline the fact a transcatheter aortic valve implantation (TAVI) device can be replaced by a surgical replacement without excessive operative risks despite the patient being initially considered as high-risk.
March 1, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28633318/evaluation-of-oral-fluid-as-a-specimen-for-duid
#11
Allison M Veitenheimer, Jarrad R Wagner
Drugged driving has become more prevalent than drunk driving and is quickly gaining national attention due to increased prescription drug abuse and recent cannabis legalization. Unlike alcohol, police officers do not generally have access to approved devices to screen for drugs at the roadside. Onsite drug screening devices do exist and are used in other countries, but have not garnered widespread approval for use in the United States in driving under the influence of drugs (DUID) cases. One reason for this is that the devices are designed to test oral fluid, which is not a commonly accepted specimen for DUID...
June 13, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28632552/comparative-study-of-c-arms-for-intraoperative-3-dimensional-imaging-and-navigation-in-minimally-invasive-spine-surgery-part-ii-radiation-exposure
#12
Jan-Helge Klingler, Ronen Sircar, Christian Scheiwe, Evangelos Kogias, Marie T Krüger, Christoph Scholz, Ulrich Hubbe
STUDY DESIGN: A radiation exposure study in vitro. OBJECTIVE: This study aimed to compare the radiation exposure of 2 different 3-dimensional (3D) C-arm devices on an anthropomorphic phantom. SUMMARY OF BACKGROUND DATA: Minimally invasive pedicle screw placement requires intraoperative imaging techniques for visualization of the unexposed spine. Mobile 3D C-arms compose a 3D image data set out of multiple successive fluoroscopic images. METHODS: We compared the 3D C-arm devices Siremobil Iso-C 3D (Siemens Sector Healthcare, Erlangen, Germany) and Vision FD Vario 3D (Ziehm Imaging, Nuremberg, Germany) regarding their radiation exposure...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28632551/comparative-study-of-c-arms-for-intraoperative-3-dimensional-imaging-and-navigation-in-minimally-invasive-spine-surgery-part-i-applicability-and-image-quality
#13
Jan-Helge Klingler, Ronen Sircar, Christian Scheiwe, Evangelos Kogias, Florian Volz, Marie T Krüger, Ulrich Hubbe
STUDY DESIGN: This was a retrospective analysis. OBJECTIVE: This study compares 2 different 3-dimensional (3D) C-arm devices for intraoperative imaging and navigation with regard to clinical applicability and image quality. SUMMARY OF BACKGROUND DATA: Minimally invasive spine surgery requires intraoperative imaging techniques to adequately visualize the unexposed spine. For this purpose, mobile 3D C-arms became available along with the evolution of intraoperative navigation techniques...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28632188/smartphone-based-food-diagnostic-technologies-a-review
#14
REVIEW
Giovanni Rateni, Paolo Dario, Filippo Cavallo
A new generation of mobile sensing approaches offers significant advantages over traditional platforms in terms of test speed, control, low cost, ease-of-operation, and data management, and requires minimal equipment and user involvement. The marriage of novel sensing technologies with cellphones enables the development of powerful lab-on-smartphone platforms for many important applications including medical diagnosis, environmental monitoring, and food safety analysis. This paper reviews the recent advancements and developments in the field of smartphone-based food diagnostic technologies, with an emphasis on custom modules to enhance smartphone sensing capabilities...
June 20, 2017: Sensors
https://www.readbyqxmd.com/read/28631466/enhancing-the-performance-of-polymer-solar-cells-by-using-donor-polymers-carrying-discretely-distributed-side-chains
#15
Xue Gong, Guangwu Li, Yang Wu, Jicheng Zhang, Shiyu Feng, Yahui Liu, Cuihong Li, Wei Ma, Zhishan Bo
Three-component conjugated polymers P1-1 and P1-2 were prepared by one-pot Stille cross-coupling reaction and applied for polymer solar cell (PSCs). The two-component polymer P1-0 only comprises 5-flouro-6-alkyloxybenzothiadiazole (AFBT) acceptor unit and thiophene donor unit; while the three-component polymers P1-1 and P1-2 contain 10% and 20% 5,6-difluorobenzothiadiazole (DFBT), respectively, as the third component. The incorporation of the third component, 5,6-difluorobenzothiadiazole, makes the side chains discretely distributed in the polymer backbones, which can enhance the π-π stacking of polymers in film, markedly increase the hole mobility of active layers, and improve the power conversion efficiency (PCE) of devices...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28631297/an-augmented-reality-tool-for-learning-spatial-anatomy-on-mobile-devices
#16
Nishant Jain, Patricia Youngblood, Matthew Hasel, Sakti Srivastava
INTRODUCTION: Augmented Realty (AR) offers a novel method of blending virtual and real anatomy for intuitive spatial learning. Our first aim in the study was to create a prototype AR tool for mobile devices. Our second aim was to complete a technical evaluation of our prototype AR tool focused on measuring the system's ability to accurately render digital content in the real world. MATERIALS AND METHODS: We imported Computed Tomography (CT) data derived virtual surface models into a 3D Unity engine environment and implemented an AR algorithm to display these on mobile devices...
June 20, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28630901/stable-anchoring-chemistry-for-room-temperature-charge-transport-through-graphite-molecule-contacts
#17
Alexander V Rudnev, Veerabhadrarao Kaliginedi, Andrea Droghetti, Hiroaki Ozawa, Akiyoshi Kuzume, Masa-Aki Haga, Peter Broekmann, Ivan Rungger
An open challenge for single-molecule electronics is to find stable contacts at room temperature with a well-defined conductance. Common coinage metal electrodes pose fabrication and operational problems due to the high mobility of the surface atoms. We demonstrate how molecules covalently grafted onto mechanically robust graphite/graphene substrates overcome these limitations. To this aim, we explore the effect of the anchoring group chemistry on the charge transport properties of graphite-molecule contacts by means of the scanning tunneling microscopy break-junction technique and ab initio simulations...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28630435/in-situ-electrical-and-thermal-monitoring-of-printed-electronics-by-two-photon-mapping
#18
Francesco Pastorelli, Nicolò Accanto, Mikkel Jørgensen, Niek F van Hulst, Frederik C Krebs
Printed electronics is emerging as a new, large scale and cost effective technology that will be disruptive in fields such as energy harvesting, consumer electronics and medical sensors. The performance of printed electronic devices relies principally on the carrier mobility and molecular packing of the polymer semiconductor material. Unfortunately, the analysis of such materials is generally performed with destructive techniques, which are hard to make compatible with in situ measurements, and pose a great obstacle for the mass production of printed electronics devices...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28630037/a-mobile-app-for-the-self-management-of-type-1-diabetes-among-adolescents-a-randomized-controlled-trial
#19
Shivani Goyal, Caitlin A Nunn, Michael Rotondi, Amy B Couperthwaite, Sally Reiser, Angelo Simone, Debra K Katzman, Joseph A Cafazzo, Mark R Palmert
BACKGROUND: While optimal blood glucose control is known to reduce the long-term complications associated with type 1 diabetes mellitus, adolescents often struggle to achieve their blood glucose targets. However, their strong propensity toward technology presents a unique opportunity for the delivery of novel self-management interventions. To support type 1 diabetes self-management in this population, we developed the diabetes self-management app bant, which included wireless blood glucose reading transfer, out-of-range blood glucose trend alerts, coaching around out-of-range trend causes and fixes, and a point-based incentive system...
June 19, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28629413/progressive-disability-in-elderly-population-among-tribals-of-telangana-a-cross-sectional-study
#20
Ajitha Katta, Anil Kumar Indira Krishna, Bagavandas M, Tomofumi Anegawa, Suresh Munuswamy
BACKGROUND: The tribal population of Telangana, India, lives in remote and difficult conditions. This study was carried out to find out estimate, the prevalence and progression of disability in elderly population among tribals of Khammam District, Telangana state, India. METHODS: A population based cross sectional survey was conducted in villages of Tribal Sub Plan area. Elderly people who are 60 years or older were chosen with a two stage sampling procedure: (1) probability proportion to size was used to select clusters and (2) in each selected cluster households were selected by systematic random sampling...
June 19, 2017: International Journal for Equity in Health
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