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https://www.readbyqxmd.com/read/27921999/lift-calculations-based-on-accepted-wake-models-for-animal-flight-are-inconsistent-and-sensitive-to-vortex-dynamics
#1
Eric Gutierrez, Daniel B Quinn, Diana D Chin, David Lentink
There are three common methods for calculating the lift generated by a flying animal based on the measured airflow in the wake. However, these methods might not be accurate according to computational and robot-based studies of flapping wings. Here we test this hypothesis for the first time for a slowly flying Pacific parrotlet in still air using stereo particle image velocimetry recorded at 1000 Hz. The bird was trained to fly between two perches through a laser sheet wearing laser safety goggles. We found that the wingtip vortices generated during mid-downstroke advected down and broke up quickly, contradicting the frozen turbulence hypothesis typically assumed in animal flight experiments...
December 6, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27918344/implantation-of-stereoelectroencephalography-electrodes-a-systematic-review
#2
Francesco Cardinale, Giuseppe Casaceli, Fabio Raneri, Jonathan Miller, Giorgio Lo Russo
BACKGROUND: Stereoelectroencephalography (SEEG) was developed by Talairach and Bancaud in Paris in the late 1950s. Subsequently, the Talairach methodology was adopted at a number of additional centers in Europe and Canada. Technical aspects remained essentially unchanged for the following 30 years. Only in the last two decades, because of advancements in image-guided surgery systems, robotics, and computer-aided planning, use of SEEG has become more widespread, and reports describing these new developments have been published...
December 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/27918291/approximate-analytical-solutions-to-the-double-stance-dynamics-of-the-lossy-spring-loaded-inverted-pendulum
#3
Mohammad Shahbazi, Uluç Saranlı, Robert Babuška, Gabriel A D Lopes
This paper introduces approximate time-domain solutions to the otherwise non-integrable double-stance dynamics of the 'bipedal' spring-loaded inverted pendulum (B-SLIP) in the presence of non-negligible damping. We first introduce an auxiliary system whose behavior under certain conditions is approximately equivalent to the B-SLIP in double-stance. Then, we derive approximate solutions to the dynamics of the new system following two different methods: (i) updated-momentum approach that can deal with both the lossy and lossless B-SLIP models, and (ii) perturbation-based approach following which we only derive a solution to the lossless case...
December 5, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27917135/editorial-investigating-human-nature-and-communication-through-robots
#4
EDITORIAL
Shuichi Nishio, Hideyuki Nakanishi, Tsutomu Fujinami
No abstract text is available yet for this article.
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27916189/editorial-commentary-lateral-extra-articular-reconstructions-with-anterior-cruciate-ligament-surgery-are-these-operative-procedures-supported-by-in%C3%A2-vitro-biomechanical-studies
#5
EDITORIAL
Frank R Noyes
There remains controversy on the role of a concurrent lateral extra-articular procedure with anterior cruciate ligament (ACL) reconstruction. Previous biomechanical studies often are historical and inconclusive. Studies show the anterolateral ligament and iliotibial band are secondary restraints and, when injured in conjunction with the ACL, produce gross (Grade 3) pivot-shift subluxations. Recent robotic studies show a well-placed bone-patellar tendon-bone reconstruction does restore time-zero kinematics with a negative pivot-shift...
December 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27916028/-structured-training-strategy-for-robot-surgery
#6
H Q Xi, K C Zhang, B Wei, L Chen
With surgical strategy progresses towarding to precision and minimally invasive surgery, the Da Vinci robotic surgical system comes into being. Compared with conventional surgery, the Da Vinci robotic surgical system enjoys several advantages including clear operation field, flexibility and tremor filtration.Normative operation plays an important role in translating such advantages into clinical benefits.Training physicians systematically and comprehensively is very important. Compared with conventional training strategy, multi-modal simulation training is more preferred for the Da Vinci robotic surgical system training...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27915466/impedance-and-admittance-control-for-respiratory-motion-compensation-during-robotic-needle-insertion-a-preliminary-test
#7
Yeoun Jae Kim, Jong Hyun Seo, Hong Rae Kim, Kwang Gi Kim
BACKGROUND: Many robotic needle-biopsy systems have been developed to enhance the accuracy of needle-biopsy intervention. These systems can reduce the intervention time and the radiation exposure of clinicians. However, respiratory-motion compensation is needed to ensure the accuracy and efficiency of needle biopsy intervention. METHODS: Human respiratory-motion data were acquired using three inertial measurement units (IMUs), and respiratory motion was simulated using the Stewart-Gough platform...
December 4, 2016: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/27915431/time-dependent-postmortem-redistribution-of-morphine-and-its-metabolites-in-blood-and-alternative-matrices-application-of-ct-guided-biopsy-sampling
#8
Sandra N Staeheli, Dominic Gascho, Lars C Ebert, Thomas Kraemer, Andrea E Steuer
Interpretation of postmortem morphine concentrations in forensic toxicology provides several pitfalls such as missing information on tolerance, analyte stability, or postmortem redistribution (PMR). Recently, it had been shown that computed tomography (CT)-guided collection of biopsies using a robotic arm (virtobot) provides a valuable strategy for systematic studies on time-dependent PMR. Using this technique, time-dependent PMR of morphine and its metabolites was investigated in 12 cases. At admission to the institute (t1), femoral and heart blood (right ventricle) as well as biopsies from the right lung, the right kidney, liver, spleen, and muscle tissue were collected...
December 3, 2016: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/27913951/stereolithography-based-3d-printed-pillar-plates-that-minimizes-fluid-transfers-during-enzyme-linked-immunosorbent-assays
#9
Justin D McCallen, Alison Schaefer, Phoebe Lee, Loretta Hing, Samuel K Lai
Enzyme linked immunosorbent assay (ELISA) is one of the most popular and indispensable tools in molecular biology. Despite numerous advances in ELISA methods that markedly improve the sensitivity and throughput of detection, a hallmark of all ELISA continues to be repeated pipetting of fluids that is not only cumbersome but can easily introduce errors or contaminations. Robotics, despite obvious advantages, remains expensive. Here, we designed and produced cheap "pillar plates" using stereolithography-based 3D printing that can be readily inserted into conventional 96- and 384- well plates and serve as the substrate for ELISA...
December 2, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27913360/real-time-decentralized-neural-control-via-backstepping-for-a-robotic-arm-powered-by-industrial-servomotors
#10
Luis A Vazquez, Francisco Jurado, Carlos E Castaneda, Victor Santibanez
This paper presents a continuous-time decentralized neural control scheme for trajectory tracking of a two degrees of freedom direct drive vertical robotic arm. A decentralized recurrent high-order neural network (RHONN) structure is proposed to identify online, in a series-parallel configuration and using the filtered error learning law, the dynamics of the plant. Based on the RHONN subsystems, a local neural controller is derived via backstepping approach. The effectiveness of the decentralized neural controller is validated on a robotic arm platform, of our own design and unknown parameters, which uses industrial servomotors to drive the joints...
December 1, 2016: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/27913034/can-robotic-approaches-be-justified-for-the-benefit-of-surgeons
#11
EDITORIAL
Peter Angelos
No abstract text is available yet for this article.
November 29, 2016: Surgery
https://www.readbyqxmd.com/read/27912153/overground-vs-treadmill-walking-on-biomechanical-energy-harvesting-an-energetics-and-emg-study
#12
Jean-Paul Martin, Qingguo Li
A biomechanical energy harvester is a wearable device that generates electricity from human motion. Walking on a treadmill has been used almost exclusively by researchers for studying the energetic effects of biomechanical energy harvesters and wearable robotics. A treadmill provides the advantage of having long duration trials within a stationary motion capture volume. However, no consensus exists on whether the results from treadmill walking accurately represent overground walking. We aim to investigate how a biomechanical energy harvester performs overground compared to on a treadmill by measuring energy expenditure and muscle activity...
November 19, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27911755/transformation-of-vestibular-signals-for-the-control-of-standing-in-humans
#13
Patrick A Forbes, Billy L Luu, H F Machiel Van der Loos, Elizabeth A Croft, J Timothy Inglis, Jean-Sébastien Blouin
: During standing balance, vestibular signals encode head movement and are transformed into coordinates that are relevant to maintaining upright posture of the whole body. This transformation must account for head-on-body orientation as well as the muscle actions generating the postural response. Here, we investigate whether this transformation is dependent upon a muscle's ability to stabilize the body along the direction of a vestibular disturbance. Subjects were braced on top of a robotic balance system that simulated the mechanics of standing while being exposed to an electrical vestibular stimulus that evoked a craniocentric vestibular error of head roll...
November 9, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27909625/robotic-kidney-transplantation-the-bak%C3%A4-rk%C3%A3-y-experience
#14
Volkan Tuğcu, Nevzat Can Şener, Selçuk Şahin, Abdullah Hızır Yavuzsan, Fatih Gökhan Akbay, Süheyla Apaydın
OBJECTIVE: Robotic kidney transplantation, first described by Hoznek and colleagues, and has been improved by investigators like Oberholzer and Menon. We realized the first robotic kidney transplant (RKT) in our clinic in December 2015. In this study, we aimed to present the first 15 cases we performed within 3 months. MATERİAL AND METHODS: Starting from January 2016, we performed 15 RKTs in our hospital. Before surgery, the whole robotic procedure was thoroughly explained to the patients and their informed consents were taken...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27909621/impact-of-robotic-partial-nephrectomy-with-and-without-ischemia-on-renal-functions-experience-in-34-cases
#15
Kemal Ener, Abdullah Erdem Canda, Serkan Altınova, Ali Fuat Atmaca, Erdal Alkan, Erem Asil, Muhammet Fuat Özcan, Ziya Akbulut, Mevlana Derya Balbay
OBJECTIVE: In this study we aimed to compare renal functions in patients who underwent robotic partial nephrectomy (RPN) with on-clamp and zero- ischemia techniques. MATERIAL AND METHODS: Between 2009 and 2015, 12 off-clamp and 22 on-clamp RPN procedures were performed on a total of 34 patients in two centers. The main outcome parameters examined were serum creatinine, and estimated glomerular filtration rate (eGFR) during preoperative, immediate postoperative periods, and at postoperative 3(rd) months...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27909613/the-novel-laparoscopic-training-3d-model-in-urology-with-surgical-anatomic-remarks-fresh-frozen-cadaveric-tissue
#16
REVIEW
Emre Huri, Mehmet Ezer, Eddie Chan
Laparoscopic surgery is routinely used to treat many urological conditions and it is the gold standard treatment option for many surgeries such as radical nephrectomy. Due to the difficulty of learning, laparoscopic training should start outside the operating room. Although it is a very different model of laparoscopic training; the aim of this review is to show the value of human cadaveric model for laparoscopic training and present our experience in this area. Fresh frozen cadaveric model in laparoscopic training, dry lab, cadaveric model, animal models and computer based simulators are the most commonly used models for laparoscopic training...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27909547/gastrointestinal-tract-access-for-urological-natural-orifice-transluminal-endoscopic-surgery
#17
REVIEW
Olga Miakicheva, Zachary Hamilton, Alp T Beksac, Sean W Berquist, Abd-Elrahman Hassan, Marc Holden, Ithaar H Derweesh
We conducted a literature review of natural orifice transluminal endoscopic surgery (NOTES), focusing on urologic procedures with gastrointestinal tract access, to update on the development of this novel surgical approach. As part of the methods, a comprehensive electronic literature search for NOTES was conducted using PubMed and Cochrane Library from March 2002 to February 2016 for papers reporting urologic procedures performed utilizing gastrointestinal tract access. A total of 11 peer-reviewed studies examining utility of gastrointestinal access for NOTES urologic procedures were noted, with the first report in 2007...
November 16, 2016: World Journal of Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/27908978/potential-of-laboratory-execution-systems-less-to-simplify-the-application-of-business-process-management-systems-bpmss-in-laboratory-automation
#18
Sebastian Neubert, Bernd Göde, Xiangyu Gu, Norbert Stoll, Kerstin Thurow
Modern business process management (BPM) is increasingly interesting for laboratory automation. End-to-end workflow automation and improved top-level systems integration for information technology (IT) and automation systems are especially prominent objectives. With the ISO Standard Business Process Model and Notation (BPMN) 2.X, a system-independent and interdisciplinary accepted graphical process control notation is provided, allowing process analysis, while also being executable. The transfer of BPM solutions to structured laboratory automation places novel demands, for example, concerning the real-time-critical process and systems integration...
December 1, 2016: Journal of Laboratory Automation
https://www.readbyqxmd.com/read/27908636/impact-of-neoadjuvant-chemotherapy-on-complications-of-minimally-invasive-radical-cystectomy
#19
D Lizée, R S Salas, E Barret, M Galiano, E Di Trapani, F Montorsi, X Cathelineau
BACKGROUND: Neoadjuvant chemotherapy (NC) before minimally invasive radical cystectomy (MIRC) is considered a standard of care in muscle-invasive bladder cancer or recurrent high-risk non-muscle-invasive bladder cancer. OBJECTIVE: To evaluate the impact of NC on morbidity and mortality after MIRC. DESIGN, SETTING, AND PARTICIPANTS: We prospectively evaluated 135 patients who underwent MIRC (laparoscopic: n=100; robotic: n=35) between 2007 and 2013 with ≥90 days of follow-up (median age: 66 year)...
November 28, 2016: Actas Urologicas Españolas
https://www.readbyqxmd.com/read/27908385/the-mutagenic-assessment-of-an-electronic-cigarette-and-reference-cigarette-smoke-using-the-ames-assay-in-strains-ta98-and-ta100
#20
D Thorne, I Crooks, M Hollings, A Seymour, C Meredith, M Gaca
Salmonella typhimurium strains TA98 and TA100 were used to assess the mutagenic potential of the aerosol from a commercially available, rechargeable, closed system electronic-cigarette. Results obtained were compared to those for the mainstream smoke from a Kentucky reference (3R4F) cigarette. Two different test matrices were assessed. Aerosol generated from the e-cigarette was trapped on a Cambridge filter pad, eluted in DMSO and compared to cigarette smoke total particulate matter (TPM), which was generated in the same manner for mutagenicity assessment in the Salmonella assay...
December 2016: Mutation Research
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