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https://www.readbyqxmd.com/read/27923181/combined-oral-contraceptive-use-is-associated-with-both-improvement-and-worsening-of-mood-in-the-different-phases-of-the-treatment-cycle-a-double-blind-placebo-controlled-randomized-trial
#1
Cecilia Lundin, Kristina Gemzell Danielsson, Marie Bixo, Lena Moby, Hanna Bengtsdotter, Izabella Jawad, Lena Marions, Jan Brynhildsen, Agota Malmborg, Ingela Lindh, Inger Sundström Poromaa
OBJECTIVE: Ever since the introduction of combined oral contraception (COC), one of the major reasons for discontinuing the pill use has been mood-related side effects. Moreover, women who discontinue the pill turn to less effective methods whereby the probability of an unintended conception increases. Approximately 4-10% of COC users complain of depressed mood, irritability or increased anxiety, but drug-related causality has been difficult to prove. Given the lack of randomized controlled trials in this area, we aimed to prospectively estimate the severity of adverse mood in COC users that would be as representative of general users as possible...
November 29, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27918630/changes-in-gait-patterns-induced-by-rhythmic-auditory-stimulation-for-adolescents-with-acquired-brain-injury
#2
Soo Ji Kim, Yoon-Kyum Shin, Ga Eul Yoo, Hyun Ju Chong, Sung-Rae Cho
The effects of rhythmic auditory stimulation (RAS) on gait in adolescents with acquired brain injury (ABI) were investigated. A total of 14 adolescents with ABI were initially recruited, and 12 were included in the final analysis (n = 6 each). They were randomly assigned to the experimental (RAS) or the control (conventional gait training) groups. The experimental group received gait training with RAS three times a week for 4 weeks. For both groups, spatiotemporal parameters and kinematic data, such as dynamic motions of joints on three-dimensional planes during a gait cycle and the range of motion in each joint, were collected...
December 2016: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/27910406/comparison-of-implosion-core-metrics-a-10-ps-dilation-x-ray-imager-vs-a-100-ps-gated-microchannel-plate
#3
S R Nagel, L R Benedetti, D K Bradley, T J Hilsabeck, N Izumi, S Khan, G A Kyrala, T Ma, A Pak
The dilation x-ray imager (DIXI) [T. J. Hilsabeck et al., Rev. Sci. Instrum. 81, 10E317 (2010); S. R. Nagel et al., ibid. 83, 10E116 (2012); S. R. Nagel et al., ibid. 85, 11E504 (2014)] is a high-speed x-ray framing camera that uses the pulse-dilation technique to achieve a temporal resolution of less than 10 ps. This is a 10 × improvement over conventional framing cameras currently employed on the National Ignition Facility (NIF) (100 ps resolution), and otherwise only achievable with 1D streaked imaging...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910368/airfoil-based-electromagnetic-energy-harvester-containing-parallel-array-motion-between-moving-coil-and-multi-pole-magnets-towards-enhanced-power-density
#4
Chung Ming Leung, Ya Wang, Wusi Chen
In this letter, the airfoil-based electromagnetic energy harvester containing parallel array motion between moving coil and trajectory matching multi-pole magnets was investigated. The magnets were aligned in an alternatively magnetized formation of 6 magnets to explore enhanced power density. In particular, the magnet array was positioned in parallel to the trajectory of the tip coil within its tip deflection span. The finite element simulations of the magnetic flux density and induced voltages at an open circuit condition were studied to find the maximum number of alternatively magnetized magnets that was required for the proposed energy harvester...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27908014/symmetry-effects-on-naturally-arising-chimera-states-in-mechanical-oscillator-networks
#5
Karen Blaha, Ryan J Burrus, Jorge L Orozco-Mora, Elvia Ruiz-Beltrán, Abu B Siddique, V D Hatamipour, Francesco Sorrentino
Coupled oscillators were believed to exclusively exist in a state of synchrony or disorder until Kuramoto theoretically proved that the two states could coexist, called a chimera state, when portions of the population had a spatial dependent coupling. Recent work has demonstrated the spontaneous emergence of chimera states in an experiment involving mechanical oscillators coupled through a two platform swing. We constructed an experimental apparatus with three platforms that each contains a population of mechanical oscillators in order investigate the effects of a network symmetry on naturally arising chimera states...
November 2016: Chaos
https://www.readbyqxmd.com/read/27907244/analyzing-the-dynamics-and-morphology-of-cast-off-pattern-at-different-speed-levels-using-high-speed-digital-video-imaging
#6
Sebastian Niko Kunz, Jiri Adamec, Christina Grove
During a bloodstain pattern analysis, one of the essential tasks is to distinguish between different kinds of applied forces as well as to estimate their level of intensity. In this study, high-speed digital imaging has been used to analyze the formation of cast-off patterns generated by a simulated backswing with a blood-bearing object. For this purpose, 0.5 mL blood was applied evenly over the last 5 cm of a blade simulant. Bloodstains were created through the controlled acceleration of a backswing at different speed levels between 1...
December 1, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27905827/modeling-pn2-through-geological-time-implications-for-planetary-climates-and-atmospheric-biosignatures
#7
E E Stüeken, M A Kipp, M C Koehler, E W Schwieterman, B Johnson, R Buick
Nitrogen is a major nutrient for all life on Earth and could plausibly play a similar role in extraterrestrial biospheres. The major reservoir of nitrogen at Earth's surface is atmospheric N2, but recent studies have proposed that the size of this reservoir may have fluctuated significantly over the course of Earth's history with particularly low levels in the Neoarchean-presumably as a result of biological activity. We used a biogeochemical box model to test which conditions are necessary to cause large swings in atmospheric N2 pressure...
December 1, 2016: Astrobiology
https://www.readbyqxmd.com/read/27905095/electrical-properties-of-ultrathin-hf-ti-o-higher-k-gate-dielectric-films-and-their-application-in-etsoi-mosfet
#8
Yuhua Xiong, Xiaoqiang Chen, Feng Wei, Jun Du, Hongbin Zhao, Zhaoyun Tang, Bo Tang, Wenwu Wang, Jiang Yan
Ultrathin Hf-Ti-O higher k gate dielectric films (~2.55 nm) have been prepared by atomic layer deposition. Their electrical properties and application in ETSOI (fully depleted extremely thin SOI) PMOSFETs were studied. It is found that at the Ti concentration of Ti/(Ti + Hf) ~9.4%, low equivalent gate oxide thickness (EOT) of ~0.69 nm and acceptable gate leakage current density of 0.61 A/cm(2) @ (V fb - 1)V could be obtained. The conduction mechanism through the gate dielectric is dominated by the F-N tunneling in the gate voltage range of -0...
December 2016: Nanoscale Research Letters
https://www.readbyqxmd.com/read/27903626/a-unified-perspective-on-ankle-push-off-in-human-walking
#9
REVIEW
Karl E Zelik, Peter G Adamczyk
Muscle-tendon units about the ankle joint generate a burst of positive power during the step-to-step transition in human walking, termed ankle push-off, but there is no scientific consensus on its functional role. A central question embodied in the biomechanics literature is: does ankle push-off primarily contribute to leg swing, or to center of mass (COM) acceleration? This question has been debated in various forms for decades. However, it actually presents a false dichotomy, as these two possibilities are not mutually exclusive...
December 1, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27902890/sexual-behavior-and-sexually-transmitted-infections-among-swingers-results-from-an-online-survey-in-belgium
#10
Tom Platteau, Jacques van Lankveld, Lieselot Ooms, Eric Florence
Swingers are couples practicing consensual extradyadic heterosexual relations. This subculture is defined by venues, and online communities. This study aimed to assess swingers' lifestyle, sexual health, history of testing for sexually transmitted infections (STI), and review risk factors for sexual risk behavior and STI transmission. An online survey was distributed through venues, chat- and dating websites. Most of 480 swingers starting the survey completed it (n = 392, 81.6%). Women (n = 146) reported more frequent swinging (p = 0...
November 30, 2016: Journal of Sex & Marital Therapy
https://www.readbyqxmd.com/read/27899681/performance-against-welcoa-s-worksite-health-promotion-benchmarks-across-years-among-selected-us-organizations
#11
GracieLee M Weaver, Brandon N Mendenhall, David Hunnicutt, Ryan Picarella, Brittanie Leffelman, Michael Perko, Daniel L Bibeau
PURPOSE: The purpose of this study was to quantify the performance of organizations' worksite health promotion (WHP) activities against the benchmarking criteria included in the Well Workplace Checklist (WWC). DESIGN: The Wellness Council of America (WELCOA) developed a tool to assess WHP with its 100-item WWC, which represents WELCOA's 7 performance benchmarks. SETTING: Workplaces. PARTICIPANTS: This study includes a convenience sample of organizations who completed the checklist from 2008 to 2015...
November 29, 2016: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/27898852/horse-species-symposium-biomechanics-of-the-exercising-horse
#12
Hilary M Clayton
In spite of having large height and body mass, horses are cursorial animals with an extensive gait repertoire and considerable athletic abilities. The limbs have evolved so that the heavy musculature is confined to the proximal limbs while the distal limbs are light in weight with a single functional digit and long, lightweight tendons to move and support the distal joints. These adaptations reduce the moment of inertia and decrease the energy expended to protract and retract the limbs during locomotion. There is a division of labor between the forelimbs, which have a pillar-like construction specialized for weight bearing, and the hind limbs, in which the more angulated joints provide leverage for the generation of propulsion...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27896688/design-simulation-and-modelling-of-auxiliary-exoskeleton-to-improve-human-gait-cycle
#13
O Ashkani, A Maleki, N Jamshidi
Exoskeleton is a walking assistance device that improves human gait cycle through providing auxiliary force and transferring physical load to the stronger muscles. This device takes the natural state of organ and follows its natural movement. Exoskeleton functions as an auxiliary device to help those with disabilities in hip and knee such as devotees, elderly farmers and agricultural machinery operators who suffer from knee complications. In this research, an exoskeleton designed with two screw jacks at knee and hip joints...
November 28, 2016: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/27888827/excision-of-recurrent-synovial-sarcoma-of-the-infratemporal-fossa
#14
Fakih Cihat Eravcı, Mehmet Düzlü, Mehmet Ekrem Zorlu, Metin Yılmaz, Mustafa Sancar Ataç
Synovial sarcoma is a soft tissue sarcoma especially encountered in the lower extremities. The infratemporal fossa is quite a rare location. Since it is a closed location, combined approaches and multidisciplinary planning always need to be considered. This case emphasizes the high-grade character of synovial sarcoma, which causes it to recur often. The difficulty of clear surgical margins in the infratemporal fossa adds to synovial sarcoma a second challenging issue. Therefore, the need of complementary therapy is essential...
September 2016: Kulak Burun Boğaz Ihtisas Dergisi: KBB, Journal of Ear, Nose, and Throat
https://www.readbyqxmd.com/read/27887840/new-p-terphenyls-from-the-endophytic-fungus-aspergillus-sp-yxf3
#15
Wei Yan, Wuringege, Sui-Jun Li, Zhi-Kai Guo, Wen-Jing Zhang, Wei Wei, Ren-Xiang Tan, Rui-Hua Jiao
Five new p-terphenyls named prenylterphenyllin D (1), prenylterphenyllin E (2), 2'-O-methylprenylterphenyllin (3), 4-O-methylprenylterphenyllin (4) and 3'-O-methylterphenyllin (5) together with seven known compounds (6-12), were isolated from cultures of Aspergillus sp. YXf3. The structures of the new compounds were elucidated by extensive MS and NMR analyses. The NMR and MS data of 5 is reported for the first time, as its structure was listed in SciFinder Scholar with no associated reference. Compounds 6 and 7 were distinguished from each other on the basis of 2D NMR experiments...
November 14, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27886842/hand-and-wrist-injuries-in-golfers-and-their-treatment
#16
REVIEW
Sang-Hyun Woo, Young-Keun Lee, Jong-Min Kim, Ho-Jun Cheon, William H J Chung
A thorough understanding of the swing phases and mechanisms of injury in golf allows accurate diagnosis, treatment, and future prevention of injuries. Recommended initial treatment starts with cessation of practice to rest the wrist, a splint or orthotic brace, and nonsteroidal antiinflammatory drug medication with corticosteroid injection and swing modification. Pisiform excision is the best treatment of the most severe chronic cases of pisiform ligament complex syndrome. Delayed diagnosis of hook of hamate fracture may lead to complications, including flexor tendon rupture...
February 2017: Hand Clinics
https://www.readbyqxmd.com/read/27884141/normal-patellofemoral-kinematic-patterns-during-daily-activities-in-dogs
#17
Erica J Moore, Stanley E Kim, Scott A Banks, Antonio Pozzi, Jason D Coggeshall, Stephen C Jones
BACKGROUND: Patellar abnormalities are a common cause of pain and lameness in dogs; however, in vivo the relative motion between the femur and patella in dogs is not well described. The objective of this study was to define normal in vivo sagittal plane patellofemoral kinematics in three axes of motion using non-invasive methods. We hypothesized patellofemoral alignment in the sagittal plane would tightly correlate with the femorotibial flexion angle. Six healthy dogs without orthopedic disease underwent computed tomography (CT) of their hind limbs to create 3-D models of the patella and femur...
November 25, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27875684/a-tether-is-a-tether-is-a-tether-tethering-at-membrane-contact-sites
#18
REVIEW
Michal Eisenberg-Bord, Nadav Shai, Maya Schuldiner, Maria Bohnert
Membrane contact sites enable interorganelle communication by positioning organelles in close proximity using molecular "tethers." With a growing understanding of the importance of contact sites, the hunt for new contact sites and their tethers is in full swing. Determining just what is a tether has proven challenging. Here, we aim to delineate guidelines that define the prerequisites for categorizing a protein as a tether. Setting this gold standard now, while groups from different disciplines are beginning to explore membrane contact sites, will enable efficient cooperation in the growing field and help to realize a great collaborative opportunity to boost its development...
November 21, 2016: Developmental Cell
https://www.readbyqxmd.com/read/27872875/a-comparison-of-the-innate-flexibilities-of-six-chains-in-f1-atpase-with-identical-secondary-and-tertiary-folds-3-active-enzymes-and-3-structural-proteins
#19
Monique M Tirion
The α and β subunits comprising the hexameric assembly of F1-ATPase share a high degree of structural identity, though low primary identity. Each subunit binds nucleotide in similar pockets, yet only β subunits are catalytically active. Why? We re-examine their internal symmetry axes and observe interesting differences. Dividing each chain into an N-terminal head region, a C-terminal foot region, and a central torso, we observe (1) that while the foot and head regions in all chains obtain high and similar mobility, the torsos obtain different mobility profiles, with the β subunits exhibiting a higher motility compared to the α subunits, a trend supported by the crystallographic B-factors...
July 2017: Structural Dynamics (Melville, N.Y.)
https://www.readbyqxmd.com/read/27870693/limb-salvage-with-intrepid-dynamic-exoskeletal-orthosis-versus-transtibial-amputation-a-comparison-of-functional-gait-outcomes
#20
Katharine I Mangan, Trevor D Kingsbury, Brittney N Mazzone, Marilynn P Wyatt, Kevin M Kuhn
OBJECTIVES: To determine if there is a difference in functional gait outcomes between patients with limb injuries treated with either transtibial amputation or limb preservation with the Intrepid Dynamic Exoskeletal Orthosis. DESIGN: Retrospective prognostic study. SETTING: Tertiary referral military hospital. PATIENTS: This study included 10 transtibial amputees and 10 limb preservation patients using the Intrepid Dynamic Exoskeletal Orthosis who were matched by body mass index after excluding for nontraumatic, proximal ipsilateral, contralateral, spine, or traumatic brain injuries...
December 2016: Journal of Orthopaedic Trauma
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