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Louise Dunphy, Prashanth Shetty, Rabinder Randhawa, Kharil Amir Rani, Yaw Duodu
A 39-year-old man, born in India but resident in the UK for 10 years, was travelling in America when he became feverish with an altered mentation. He reported a 10-day history of fever, photophobia, headache and fatigue. His medical history included hypothyroidism and migraine. He was a non-smoker, did not consume alcohol and denied a history of drug use. He was transferred to the emergency department. Laboratory investigations confirmed hyponatraemia (sodium 128 mmol/L). A chest radiograph confirmed no focal consolidation...
October 7, 2016: BMJ Case Reports
María Carolina Bermúdez Rey, Torin K Clark, Wei Wang, Tania Leeder, Yong Bian, Daniel M Merfeld
We measured vestibular perceptual thresholds in 105 healthy humans (54F/51M) ranging from 18 to 80 years of age. Direction-recognition thresholds were measured using standard methods. The motion consisted of single cycles of sinusoidal acceleration at 0.2 Hz for roll tilt and 1.0 Hz for yaw rotation about an earth-vertical axis, inter-aural earth-horizontal translation (y-translation), inferior-superior earth-vertical translation (z-translation), and roll tilt. A large subset of this population (99 of 105) also performed a modified Romberg test of standing balance...
2016: Frontiers in Neurology
Yaw A Nyame, Helen Liang, Hans C Arora, Bradley C Gill, Peter Caputo, Daniel Ramirez, Matthew J Maurice, Khaled Fareed, Robert J Stein, Georges-Pascal Haber, Andrew J Stephenson, Amr Fergany, Jihad Kaouk
PURPOSE: Currently no data exists to guide renal surgeons on the perioperative use of renin-angiotensin (RAS) blockers despite their potential cardiorenal benefits. This study aims to assess the impact of resuming RAS blockers on postoperative renal function and adverse cardiac events following partial nephrectomy. PATIENTS AND METHODS: This is an observational analysis of patients undergoing robotic-assisted laparoscopic partial nephrectomy from 2006-2014 at a single institution...
October 13, 2016: Journal of Urology
Cheng-Guang Lin, Sen-Kui Xu, Wen-Yan Yao, Yu-Qi Wu, Jian-Lan Fang, Vincent W C Wu
INTRODUCTION: In intensity modulated radiotherapy (IMRT) of nasopharyngeal carcinoma (NPC) patients, an effective immobilisation system is important to minimise set up deviation. This study evaluated the effectiveness of three immobilisation systems by assessing their set up deviations. METHODS: Patients were randomly assigned to one of the three immobilisation systems: (1) supine on head rest and base plate (HB); (2) supine with alpha cradle supporting the head and shoulder (AC); (3) supine with vacuum bag supporting the head and shoulder (VB)...
September 1, 2016: Journal of Medical Radiation Sciences
Yaw S Obeng, Chukwudi A Okoro, Papa K Amoah, Johnny Dai, Victor H Vartanian
In this paper, we attempt to understand the physico-chemical changes that occur in devices during device "burn-in". We discuss the use of low frequency dielectric spectroscopy to detect, characterize and monitor changes in electrical defects present in the dielectrics of through silicon vias (TSV) for three dimensional (3D) interconnected integrated circuit devices, as the devices are subjected to fluctuating thermal loads. The observed changes in the electrical characteristics of the interconnects were traceable to changes in the chemistry of the isolation dielectric used in the TSV construction...
2016: ECS Journal of Solid State Science and Technology: JSS
Taylor J Yaw, Nick D Jeffery, Brandon Cain, Amanda Fales-Williams, Bianca A Zaffarano
A juvenile, male crested pekin duck ( Anas platyrhynchos f dom) was presented for neurologic signs suggestive of cerebellar disease. Physical examination revealed microphthalmia, erratic head movements, and ataxia. Computed tomography scan of the head and neck regions revealed 2 full-thickness skull-bone defects within the caudal portion of the cranium. The cerebellum appeared to be ventrally compressed by a homogeneous, triangular, fluid-attenuating region (0-10 Hounsfield units). A craniectomy was performed, and a presumed peripheral cerebral cyst was removed with suction and gentle dissection...
September 2016: Journal of Avian Medicine and Surgery
Hue-Yu Wang, Ming-Kung Yeh, Chung-Han Ho, Ming-Kuan Hu, Yaw-Bin Huang
PURPOSE: To analyze and characterize data regarding the prevalence and types of outpatient drug-related problems (DRPs) found by clinical pharmacists after implementation of the Virtual Medicine Record in Cloud System (VMRCS). METHODS: A cross-sectional study regarding outpatient pharmaceutical care was conducted at a medical center in Taiwan. Patients aged >20 years old with multiple chronic diseases and polypharmacy were enrolled. In Stage I (1 October-31 December 2014), patients received pharmaceutical care according to prescription data accessed online in the VMRCS...
October 12, 2016: Pharmacoepidemiology and Drug Safety
Peter B M Thomas, Tadas Baltrušaitis, Peter Robinson, Anthony J Vivian
PURPOSE: We validate a video-based method of head posture measurement. METHODS: The Cambridge Face Tracker uses neural networks (constrained local neural fields) to recognize facial features in video. The relative position of these facial features is used to calculate head posture. First, we assess the accuracy of this approach against videos in three research databases where each frame is tagged with a precisely measured head posture. Second, we compare our method to a commercially available mechanical device, the Cervical Range of Motion device: four subjects each adopted 43 distinct head postures that were measured using both methods...
September 2016: Translational Vision Science & Technology
Stephen R Doyle, Samuel Armoo, Alfons Renz, Mark J Taylor, Mike Yaw Osei-Atweneboana, Warwick N Grant
BACKGROUND: Genetic surveillance of the human filarial parasite, Onchocerca volvulus, from onchocerciasis endemic regions will ideally focus on genotyping individual infective larval stages collected from their intermediate host, Simuliid blackflies. However, blackflies also transmit other Onchocerca species, including the cattle parasite O. ochengi, which are difficult to distinguish from the human parasite based on morphological characteristics alone. This study describes a versatile approach to discriminate between O...
October 10, 2016: Parasites & Vectors
Wei-Chieh Hung, Marc Sigrist, Shao-An Hua, Lai-Chin Wu, Tsai-Jung Liu, Bih-Yaw Jin, Gene-Hsiang Lee, Shie-Ming Peng
A dimeric molybdenum precursor and nickel ions are used to synthesize a symmetric heteropentanuclear complex, [Mo2NiMo2(tpda)4(NCS)2]. This complex possesses unique structural features, as the four ligands are coordinated to the metal framework in a meso configuration. Furthermore, the central Ni(2+) ion is in a high spin state.
October 11, 2016: Chemical Communications: Chem Comm
Neil Stringer, Michael Chan, Yaw Bimpeh, Philip Chan
This study investigates the effects of socioeconomic status and schooling on the academic attainment of a cohort of students at a single medical school (N = 240). Partial least squares structural equation modelling was used to explore how students' summative assessment scores over 4 years of medical school were affected by: attainment in secondary school examinations (GCSEs and A-levels); the Income Deprivation Affecting Children Index (IDACI) rank associated with students' home postcodes; the performance of students' A-level institutions, measured as the percentage of A-level students achieving 3 A-levels at AAB or higher in two or more facilitating subjects...
October 4, 2016: Advances in Health Sciences Education: Theory and Practice
Ming-Jun Tsai, I-Ju Lu, Yaw-Syan Fu, Yi-Ping Fang, Yaw-Bin Huang, Pao-Chu Wu
The aim of this study was to develop and assess the potential of nanostructured emulsion carriers for resveratrol topical application. Different compositions of resveratrol-loaded nanostructured emulsions were prepared using different types and amounts of surfactants and oily phases (isopropyl myristate and caproyl 90). The produced nanostructured emulsions were within the nanosized range 23.4-422.2nm with low viscosity range 2.15-17.53cps. The transdermal amount and deposition amount in the skin after 24 applications of resveratrol-loaded nanostructured emulsion were significantly increased about 896...
September 28, 2016: Colloids and Surfaces. B, Biointerfaces
Frederik Crop, David Pasquier, Amandine Baczkiewic, Julie Doré, Lena Bequet, Emeline Steux, Anne Gadroy, Jacqueline Bouillon, Clement Florence, Laurence Muszynski, Mathilde Lacour, Eric Lartigau
A surface imaging system, Catalyst (C-Rad), was compared with laser-based positioning and daily mega voltage computed tomography (MVCT) setup for breast patients with nodal involvement treated by helical TomoTherapy. Catalyst-based positioning performed better than laser-based positioning. The respective modalities resulted in a standard deviation (SD), 68% confidence interval (CI) of positioning of left-right, craniocaudal, anterior-posterior, roll: 2.4 mm, 2.7 mm, 2.4 mm, 0.9° for Catalyst positioning, and 6...
2016: Journal of Applied Clinical Medical Physics
Sen Hee Tay, Aisha Lateef, Yaw Chyn Lim, Irene Jv Ng, Dow Rhoon Koh, Lina Hk Lim
No abstract text is available yet for this article.
August 2016: Annals of the Academy of Medicine, Singapore
Daniel Esau
When first described in 1958, Burkitt lymphoma was considered by many to be an African curiosity. However, over the next few decades, over 10,000 publications on Burkitt lymphoma would influence many facets of oncology research including immunology, molecular genetics, chemotherapy, and viral oncology. At the time of discovery, its distribution in equatorial Africa was unique; it was where a child was born and lived, and not what race they were, that conveyed the greatest incidence risk. Its association with Epstein-Barr virus brought attention to the possibility that oncogenesis may be influenced by viruses...
September 28, 2016: Journal of Medical Biography
Yao Li, Feng Cao, Tat Thang Vo Doan, Hirotaka Sato
The mechanisms and principles of insect flight have long been investigated by researchers working on micro and nano air vehicles (MAVs/NAVs). However, studies of insect flight maneuvers require high speed filming and high spatial resolution in a small experimental space, or the tethering of the insect to a fixed place. Under such artificial conditions, the insects may deviate its flying behavior from that of regular flight. In this study, we mounted a tiny wireless system, or 'backpack', on live beetles (Mecynorrhina torquata; length 62 ± 8 mm; mass 7...
2016: Bioinspiration & Biomimetics
Jia Wei Siau, Cynthia R Coffill, Weiyun Villien Zhang, Yaw Sing Tan, Juliane Hundt, David Lane, Chandra Verma, Farid Ghadessy
The identification of genes encoding a p53 family member and an Mdm2 ortholog in the ancient placozoan Trichoplax adhaerens advocates for the evolutionary conservation of a pivotal stress-response pathway observed in all higher eukaryotes. Here, we recapitulate several key functionalities ascribed to this known interacting protein pair by analysis of the placozoan proteins (Tap53 and TaMdm2) using both in vitro and cellular assays. In addition to interacting with each other, the Tap53 and TaMdm2 proteins are also able to respectively bind human Mdm2 and p53, providing strong evidence for functional conservation...
September 28, 2016: Scientific Reports
Moslem Shaabani, Yones Lotfi, Seyed Morteza Karimian, Mehdi Rahgozar, Mehdi Hooshmandi
In this dataset, we analyzed galvanic-evoked head movements (GEHMs) in the spatial planes of yaw, and roll in normal and unilaterally labyrinthectomized (UL) Wistar rats. The rats were assigned in 4 groups of 10: control, sham, right-UL and left-UL. Bilateral galvanic vestibular stimulation (GVS) was presented by our "ring-shaped electrode" design (see "Short-term galvanic vestibular stimulation promotes functional recovery and neurogenesis in unilaterally labyrinthectomized rats" (M. Shaabani et al., 2016) [1])...
December 2016: Data in Brief
Bingbo Cui, Xiyuan Chen, Yuan Xu, Haoqian Huang, Xiao Liu
In order to improve the accuracy and robustness of GNSS/INS navigation system, an improved iterated cubature Kalman filter (IICKF) is proposed by considering the state-dependent noise and system uncertainty. First, a simplified framework of iterated Gaussian filter is derived by using damped Newton-Raphson algorithm and online noise estimator. Then the effect of state-dependent noise coming from iterated update is analyzed theoretically, and an augmented form of CKF algorithm is applied to improve the estimation accuracy...
September 22, 2016: ISA Transactions
Hamed Jabbari Asl, Jungwon Yoon
In this paper, an image-based visual servo controller is designed for an unmanned aerial vehicle. The main objective is to use flow of image features as the velocity cue to compensate for the low quality of linear velocity information obtained from accelerometers. Nonlinear observers are designed to estimate this flow. The proposed controller is bounded, which can help to keep the target points in the field of view of the camera. The main advantages over the previous full dynamic observer-based methods are that, the controller is robust with respect to unknown image depth, and also no yaw information is required...
September 22, 2016: ISA Transactions
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