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https://www.readbyqxmd.com/read/29140639/determining-the-effectiveness-of-mirrors-and-camera-systems-in-monitoring-the-rearward-visibility-of-self-propelled-agricultural-machinery
#1
Shawn G Ehlers, William E Field
This study concerned the ability of operators of tractors and other self-propelled agricultural machinery to visually recognize objects and/or hazards within close proximity to the rear of those machines and/or any implements in tow, especially when backing up. It was hypothesized that the data collected would identify the factors affecting rearward visibility and help determine the effectiveness of two backup-assisting devices (i.e., mirrors and camera systems) in enhancing the operator's ability to observe objects or hazards...
July 31, 2017: Journal of Agricultural Safety and Health
https://www.readbyqxmd.com/read/29140523/sequential-coiling-assisted-deployment-of-flow-diverter-for-treatment-of-fusiform-middle-cerebral-artery-aneurysms
#2
Abdulrahman Y Alturki, Philip G R Schmalz, Christopher S Ogilvy, Ajith J Thomas
BACKGROUND AND IMPORTANCE: Fusiform intracranial aneurysms remain challenging lesions to treat. These aneurysms have historically required bypass procedures or clip remodeling constructs for cure. Recently, endovascular specialists have reported experience with flow diversion for complex fusiform aneurysms of the vertebrobasilar system, with mixed results. Vascular anatomy for anterior circulation fusiform aneurysms may make these lesions more amenable to flow diversion and embolization procedures; however, published experience with these techniques is lacking...
November 11, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29140423/ventricular-assist-device-implantation-in-a-young-patient-with-non-compaction-cardiomyopathy-and-hereditary-spherocytosis
#3
Katharina Huenges, Bernd Panholzer, Jochen Cremer, Assad Haneya
A case of a 15-year-old female patient with acute heart failure due to non-compaction cardiomyopathy and hereditary anaemia (hereditary spherocytic elliptocytosis) requiring ventricular assist device implantation as a bridge to transplantation is presented. The possible effects of mechanical stress on erythrocytes potentially induced by mechanical circulatory support remains unclear, but it may lead to haemolytic crisis in patients suffering from hereditary anaemia. In our case, ventricular assist device therapy was feasible, and haematological complications did not occur within 6 weeks of bridging our patient to heart transplantation...
November 10, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29140304/ultra-fast-microwave-synthesis-of-zno-nanorods-on-cellulose-substrates-for-uv-sensor-applications
#4
Ana Pimentel, Ana Samouco, Daniela Nunes, Andreia Araújo, Rodrigo Martins, Elvira Fortunato
In the present work, tracing and Whatman papers were used as substrates to grow zinc oxide (ZnO) nanostructures. Cellulose-based substrates are cost-efficient, highly sensitive and environmentally friendly. ZnO nanostructures with hexagonal structure were synthesized by hydrothermal under microwave irradiation using an ultrafast approach, that is, a fixed synthesis time of 10 min. The effect of synthesis temperature on ZnO nanostructures was investigated from 70 to 130 °C. An Ultra Violet (UV)/Ozone treatment directly to the ZnO seed layer prior to microwave assisted synthesis revealed expressive differences regarding formation of the ZnO nanostructures...
November 15, 2017: Materials
https://www.readbyqxmd.com/read/29140080/vapor-assisted-solution-approach-for-high-quality-perovskite-ch3nh3pbbr3-thin-films-for-high-performance-green-light-emitting-diodes-applications
#5
Huifang Ji, Zhifeng Shi, Xuguang Sun, Ying Li, Sen Li, Lingzhi Lei, Di Wu, Tingting Xu, Xinjian Li, Guotong Du
Vapor-assisted solution method was developed to prepare the high-quality organic-inorganic halide perovskite CH3NH3PbBr3 (MAPbBr3) thin films. We detailedly investigated the effect of evaporation time and temperature of MABr powder on the microstructure, crystallinity and optical characterizations of MAPbBr3 thin films, and a controllable morphology evolution with varying surface coverage was observed. Temperature-dependent and time-resolved photoluminescence (PL) measurements were carried out to investigate the optical transition mechanisms and carrier recombination dynamics of MAPbBr3 thin films...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29138364/retrograde-cto-pci-of-native-coronary-arteries-via-left-internal-mammary-artery-grafts-insights-from-a-multicenter-u-s-registry
#6
Peter Tajti, Aris Karatasakis, Dimitri Karmpaliotis, Khaldoon Alaswad, Farouc A Jaffer, Robert W Yeh, Mitul Patel, Ehtisham Mahmud, James W Choi, Anthony H Doing, Catalin Toma, Barry Uretsky, Santiago Garcia, Jeffrey W Moses, Manish Parikh, Ajay Kirtane, Ziad A Ali, Raja Hatem, Judit Karacsonyi, Barbara A Danek, Bavana V Rangan, Subhash Banerjee, Imre Ungi, Emmanouil S Brilakis
BACKGROUND: Retrograde percutaneous coronary intervention (PCI) of native coronary artery chronic total occlusion (CTO) via left internal mammary artery (LIMA) graft has received limited study. METHODS AND RESULTS: We compared the clinical and procedural characteristics and outcomes of retrograde CTO-PCI through LIMA grafts vs other conduits in a contemporary multicenter CTO registry. The LIMA was used as the collateral channel in 20 of 990 retrograde CTO-PCIs (2...
November 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29137764/ultra-low-temperature-sintering-of-cu-ag-core-shell-nanoparticle-paste-by-ultrasonic-in-air-for-high-temperature-power-device-packaging
#7
Hongjun Ji, Junbo Zhou, Meng Liang, Huajun Lu, Mingyu Li
Sintering of low-cost Cu nanoparticles (NPs) for interconnection of chips to substrate at low temperature and in atmosphere conditions is difficult because they are prone to oxidation, but dramatically required in semiconductor industry. In the present work, we successfully synthesized Cu@Ag NPs paste, and they were successfully applied for joining Cu/Cu@Ag NPs paste/Cu firstly in air by the ultrasonic-assisted sintering (UAS) at a temperature of as low as 160 °C. Their sintered microstructures featuring with dense and crystallized cells are completely different from the traditional thermo-compression sintering (TCS)...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137174/hdomo-smart-sensor-integration-for-an-active-and-independent-longevity-of-the-elderly
#8
Emanuele Frontoni, Rama Pollini, Paola Russo, Primo Zingaretti, Graziano Cerri
The aim of this paper is to present the main results of HDOMO, an Ambient Assisted Living (AAL) project that involved 16 Small and Medium Enterprises (SMEs) and 2 research institutes. The objective of the project was to create an autonomous and automated domestic environment, primarily for elderly people and people with physical and motor disabilities. A known and familiar environment should help users in their daily activities and it should act as a virtual caregiver by calling, if necessary, relief efforts...
November 13, 2017: Sensors
https://www.readbyqxmd.com/read/29137109/potential-applications-and-limitations-of-electronic-nose-devices-for-plant-disease-diagnosis
#9
REVIEW
Antonio Cellini, Sonia Blasioli, Enrico Biondi, Assunta Bertaccini, Ilaria Braschi, Francesco Spinelli
Electronic nose technology has recently been applied to the detection of several plant diseases and pests, with promising results. However, in spite of its numerous advantages, including operational simplicity, non-destructivity, and bulk sampling, drawbacks include a low sensitivity and specificity in comparison with microbiological and molecular methods. A critical review of the use of an electronic nose for plant disease diagnosis and pest detection is presented, describing the instrumental and procedural advances of sensorial analysis, for the improvement of discrimination between healthy and infected or infested plants...
November 11, 2017: Sensors
https://www.readbyqxmd.com/read/29136855/molecularly-imprinted-polymer-mip-membrane-assisted-direct-spray-ionization-mass-spectrometry-for-agrochemicals-screening-in-foodstuffs
#10
Igor Pereira, Marcella Ferreira Rodrigues, Andréa Rodrigues Chaves, Boniek Gontijo Vaz
Paper spray ionization (PSI) has some limitations such as low sensitivity and ionization suppression when complex samples are analyzed. The use of sample preparation devices directly coupled to MS can avoid these restrictions. Molecularly imprinted polymers (MIPs) are materials widely used as adsorbent in sample preparation methods such as solid-phase extraction and solid-phase microextraction, and they can provide specifics cavities with affinity to a target molecule. Here, we introduce a new MIP membrane spray ionization method combining MIP and PSI...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136649/discordance-between-actual-and-scheduled-check-in-times-at-a-heart-failure-clinic
#11
Eiran Z Gorodeski, Emer Joyce, Benjamin T Gandesbery, Eugene H Blackstone, David O Taylor, W H Wilson Tang, Randall C Starling, Rory Hachamovitch
INTRODUCTION: A 2015 Institute Of Medicine statement "Transforming Health Care Scheduling and Access: Getting to Now", has increased concerns regarding patient wait times. Although waiting times have been widely studied, little attention has been paid to the role of patient arrival times as a component of this phenomenon. To this end, we investigated patterns of patient arrival at scheduled ambulatory heart failure (HF) clinic appointments and studied its predictors. We hypothesized that patients are more likely to arrive later than scheduled, with progressively later arrivals later in the day...
2017: PloS One
https://www.readbyqxmd.com/read/29135427/effect-of-bathroom-aids-and-age-on-balance-control-during-bathing-transfers
#12
Emily C King, Alison C Novak
Bathroom assistive devices are used to improve safety during bathing transfers, but biomechanical evidence to support clinical recommendations is lacking. This study evaluated the effectiveness of common bathroom aids in promoting balance control during bathing transfers. Twenty-six healthy adults (12 young, 14 older) stepped into and out of a slippery bathtub while using a vertical grab bar on the side wall, a horizontal grab bar on the back wall, a bath mat, a side wall touch, or no assistance. Balance control was characterized using center of pressure measures and showed greater instability for older adults...
November 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/29135099/tissue-injury-of-the-remnant-liver-following-radiofrequency-assisted-partial-hepatectomy
#13
Petros Ypsilantis, Maria Lambropoulou, Anastasios Karayiannakis, Miroslav Milicevic, Predrag Bulajic, Dimitrios Zacharoulis, Eleni Sioka, Constantinos Simopoulos
PURPOSE: To evaluate remnant liver tissue damage in a pig model of radiofrequency (RF)-assisted liver resection employing either the sequential coagulate cut (SCC) Belgrade technique using a monopolar RF electrode or the one using the bipolar Habib-4x device. METHODS: Sixteen pigs underwent either a) resection of part of the left lateral and left median hepatic lobes employing the SCC (SCC group), the Habib-4X (H group) or the "crushclamp" technique (CC group) or b) sham operation (Sham group)...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29132918/the-first-in-human-experience-with-a-minimally-invasive-ambulatory-counterpulsation-heart-assist-system-for-advanced-congestive-heart-failure
#14
Valluvan Jeevanandam, Tae Song, David Onsager, Takeyoshi Ota, Colleen Juricek LaBuhn, Thomas Lammy, Gabriel Sayer, Gene Kim, Sonna Patel-Raman, Nir Uriel
BACKGROUND: The intravascular ventricular assist system (iVAS) is a new, minimally invasive, ambulatory counterpulsation heart assist system delivered via the subclavian artery and powered by a portable driver. It is designed for recovery, bridge to transplantation (BTT) or for prolonging medical therapy. We report the first-in-human (FIH) experience with iVAS. METHODS: This is a prospective, non-randomized single arm, U.S. Food and Drug Administration (FDA)-approved early feasibility trial in patients listed for cardiac transplantation...
November 10, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/29130887/axial-p-n-junction-and-space-charge-limited-current-in-single-gan-nanowire
#15
Zhihua Fang, Fabrice Donatini, Bruno Daudin, Julien Pernot
The electrical characterizations of individual basic GaN nanostructures, such as axial nanowire (NW) p-n junctions, are becoming indispensable and crucial for the fully controlled realization of GaN NW based devices. In this study, electron beam induced current (EBIC) measurements were performed on two single axial GaN p-n junction NWs grown by plasma-assisted molecular beam epitaxy. I-V characteristics revealed that both ohmic and space charge limited current (SCLC) regimes occur in GaN p-n junction NW. Thanks to an improved contact process, both the electric field induced by the p-n junction and the SCLC in the p-part of GaN NW were disclosed and delineated by EBIC signals under different biases...
November 13, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29130648/emergent-percutaneous-therapy-for-left-ventricular-assist-device-retrograde-flow
#16
Ryan E Wilson, John C Gurley, Navin Rajagopalan, Thomas A Tribble
With the number of heart transplants being performed each year stagnating due to lack of donors the left ventricular assist device (LVAD) patient population will continue to grow. As more and more patients are living longer with LVADs, either as a bridge to transplant or destination therapy, we will continue to see an increased number of complications related to assist device therapy. One of the common challenges physicians face are patients who suffer from both bleeding and thrombotic complications. When bleeding complications occur anticoagulation is usually reduced or discontinued and then the thrombosis risk increases...
November 11, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29130438/segmental-and-suprasegmental-perception-in-children-using-hearing-aids
#17
Kaitlyn A Wenrich, Lisa S Davidson, Rosalie M Uchanski
BACKGROUND: Suprasegmental perception (perception of stress, intonation, "how something is said" and "who says it") and segmental speech perception (perception of individual phonemes or perception of "what is said") are perceptual abilities that provide the foundation for the development of spoken language and effective communication. While there are numerous studies examining segmental perception in children with hearing aids (HAs), there are far fewer studies examining suprasegmental perception, especially for children with greater degrees of residual hearing...
November 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/29129573/3d-printed-uv-light-cured-polydimethylsiloxane-devices-for-drug-delivery
#18
Jenny Holländer, Risto Hakala, Jaakko Suominen, Niko Moritz, Jouko Yliruusi, Niklas Sandler
The goal of this work was to study the printability of PDMS with a semi-solid extrusion printer in combination with the UV-assisted crosslinking technology using UV-LED light to manufacture drug containing structures. Structures with different pore sizes and different drug loadings were prepared containing prednisolone as a model drug. The work showed that it was possible to print drug-free and drug-loaded drug delivery devices of PDMS with the 3D printing technique used in this study. The required UV-curing time to get sufficient crosslinking yield and mechanical strength was minimum three minutes...
November 9, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29129497/frailty-and-clinical-outcomes-in-advanced-heart-failure-patients-undergoing-left-ventricular-assist-device-implantation-a-systematic-review-and-meta-analysis
#19
Gary Tse, Mengqi Gong, Sunny Hei Wong, William K K Wu, George Bazoukis, Konstantinos Lampropoulos, Wing Tak Wong, Yunlong Xia, Martin C S Wong, Tong Liu, Jean Woo
BACKGROUND: Frailty has been identified as a risk factor for adverse clinical outcomes after cardiac intervention or surgery. However, whether it increases the risk of adverse outcomes in patients undergoing left ventricular assist device (LVAD) therapy has been controversial. Therefore, we conducted a systematic review and meta-analysis of the frailty measures and clinical outcomes of length of stay and mortality in this setting. METHODS: PubMed and Embase were searched until September 11, 2017, for studies evaluating the association between frailty and clinical outcomes in advanced heart failure patients undergoing LVAD implantation...
November 9, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/29129374/the-jarvik-2000-left-ventricular-assist-device-as-a-bridge-to-transplantation-japanese-registry-for-mechanically-assisted-circulatory-support
#20
Hiroki Kohno, Goro Matsumiya, Yoshiki Sawa, Minoru Ono, Yoshikatsu Saiki, Akira Shiose, Kenji Yamazaki, Yoshiro Matsui, Hiroshi Niinami, Hikaru Matsuda, Soichiro Kitamura, Takeshi Nakatani, Shunei Kyo
BACKGROUND: The Jarvik 2000 ventricular assist device features a miniaturized intraventricular pump and an intermittent low-speed function that facilitates aortic valve opening. Despite its long history, little is known about the Jarvik device with regard to post-implantation outcomes. METHODS: Prospectively collected data from 13 participating hospitals were extracted from the Japanese Registry for Mechanically Assisted Circulatory Support database to analyze mortality, morbidity and de-novo aortic regurgitation...
October 24, 2017: Journal of Heart and Lung Transplantation
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