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https://www.readbyqxmd.com/read/27925340/evaluation-of-epididymis-storage-temperature-and-cryopreservation-conditions-for-improved-mitochondrial-membrane-potential-membrane-integrity-sperm-motility-and-in-vitro-fertilization-in-bovine-epididymal-sperm
#1
M Nichi, T Rijsselaere, Jda Losano, Dsr Angrimani, Gkv Kawai, Igf Goovaerts, A Van Soom, V H Barnabe, Jbp De Clercq, Pej Bols
The maintaining of the epididymis at lower temperatures during storage and transport improves sperm quality. Our study aimed to test whether epididymis storage temperature (post-mortem) and sperm cryopreservation affect sperm kinetics, membrane integrity, mitochondrial potential and fertility capacity. Thirty-six epididymides were collected from 18 bulls after slaughter and divided into two groups: at 4 or 34°C for 2-3 hr. The sperm was collected from the epididymis cauda. The evaluation consisted of computer-assisted sperm analysis (CASA), SYBR14/PI/JC1 to evaluate membrane integrity, mitochondrial membrane potential (MMP) and measurement of lipid peroxidation (TBARS)...
December 7, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27917476/pop-up-satellite-archival-tag-effects-on-the-diving-behaviour-growth-and-survival-of-adult-atlantic-salmon-salmo-salar-at-sea
#2
R D Hedger, A H Rikardsen, E B Thorstad
The effects of large, externally attached pop-up satellite archival tags (PSATs) were compared with those of small implanted data storage tags (DSTs) on adult Atlantic salmon Salmo salar during their ocean migration in regards to depth utilization, diving depth, diving rate, diving speed and temperatures experienced. Additionally the return rate and growth of individuals tagged with PSATs was compared with those of small acoustic tags and DSTs. Overall, the depth distribution of individuals tagged with PSATs was similar to that of those tagged with DSTs, reflecting the pelagic nature of S...
December 4, 2016: Journal of Fish Biology
https://www.readbyqxmd.com/read/27916962/lightweight-sensor-authentication-scheme-for-energy-efficiency-in-ubiquitous-computing-environments
#3
Jaeseung Lee, Yunsick Sung, Jong Hyuk Park
The Internet of Things (IoT) is the intelligent technologies and services that mutually communicate information between humans and devices or between Internet-based devices. In IoT environments, various device information is collected from the user for intelligent technologies and services that control the devices. Recently, wireless sensor networks based on IoT environments are being used in sectors as diverse as medicine, the military, and commerce. Specifically, sensor techniques that collect relevant area data via mini-sensors after distributing smart dust in inaccessible areas like forests or military zones have been embraced as the future of information technology...
December 1, 2016: Sensors
https://www.readbyqxmd.com/read/27900329/postinsertional-cable-movements-of-cochlear-implant-electrodes-and-their-effects-on-intracochlear-pressure
#4
I Todt, D Karimi, J Luger, A Ernst, P Mittmann
Introduction. To achieve a functional atraumatic cochlear implantation, intracochlear pressure changes during the procedure should be minimized. Postinsertional cable movements are assumed to induce intracochlear pressure changes. The aim of this study was to observe intracochlear pressure changes due to postinsertional cable movements. Materials and Methods. Intracochlear pressure changes were recorded in a cochlear model with a micro-pressure sensor positioned in the apical region of the cochlea model to follow the maximum amplitude and pressure gain velocity in intracochlear pressure...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27882932/tunable-inertia-of-chiral-magnetic-domain-walls
#5
Jacob Torrejon, Eduardo Martinez, Masamitsu Hayashi
The time it takes to accelerate an object from zero to a given velocity depends on the applied force and the environment. If the force ceases, it takes exactly the same time to completely decelerate. A magnetic domain wall is a topological object that has been observed to follow this behaviour. Here we show that acceleration and deceleration times of chiral Neel walls driven by current are different in a system with low damping and moderate Dzyaloshinskii-Moriya exchange constant. The time needed to accelerate a domain wall with current via the spin Hall torque is much faster than the time it needs to decelerate once the current is turned off...
November 24, 2016: Nature Communications
https://www.readbyqxmd.com/read/27867355/methods-for-specifying-scientific-data-standards-and-modeling-relationships-with-applications-to-neuroscience
#6
Oliver Rübel, Max Dougherty, Prabhat, Peter Denes, David Conant, Edward F Chang, Kristofer Bouchard
Neuroscience continues to experience a tremendous growth in data; in terms of the volume and variety of data, the velocity at which data is acquired, and in turn the veracity of data. These challenges are a serious impediment to sharing of data, analyses, and tools within and across labs. Here, we introduce BRAINformat, a novel data standardization framework for the design and management of scientific data formats. The BRAINformat library defines application-independent design concepts and modules that together create a general framework for standardization of scientific data...
2016: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/27847275/preparation-and-tableting-of-long-term-stable-amorphous-rutin-using-porous-silica
#7
Qionghua Wei, Cornelia M Keck, Rainer H Müller
Amorphous state of drugs increases the oral bioavailability, but typically faces physical stability problems. Amorphous rutin was generated and physically stabilized by encapsulating inside mesopores of porous AEROPERL® 300 Pharma and named as rutin CapsMorph® in this study. AEROPERL® 300 Pharma was loaded with rutin dissolved in DMSO containing Tween 80, and subsequently the solvent evaporated (wetness impregnation method). The loading process was monitored by light microscopy and scanning electron microscopy (SEM)...
November 12, 2016: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27823953/the-effect-of-gentamicin-on-sperm-motility-and-bacterial-abundance-during-chilled-sperm-storage-in-the-booroolong-frog
#8
Leesa M Keogh, Phillip G Byrne, Aimee J Silla
Antibiotics can inhibit bacterial contamination and extend sperm longevity during storage; a primary goal of captive facilities conducting biobanking and artificial fertilisation (AF). This study evaluated the effects of gentamicin on the short-term storage of Booroolong frog sperm. Sperm suspensions were obtained via either testis maceration, or as spermic urine, following hormonal induction of sperm-release. The effect of 0, 1, 2, 3 or 4mgmL(-1) gentamicin on bacterial abundance (CFUmL(-1)) was determined and sperm motility assessed...
November 5, 2016: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27808101/the-formation-of-the-ocean-s-anthropogenic-carbon-reservoir
#9
Daniele Iudicone, Keith B Rodgers, Yves Plancherel, Olivier Aumont, Takamitsu Ito, Robert M Key, Gurvan Madec, Masao Ishii
The shallow overturning circulation of the oceans transports heat from the tropics to the mid-latitudes. This overturning also influences the uptake and storage of anthropogenic carbon (Cant). We demonstrate this by quantifying the relative importance of ocean thermodynamics, circulation and biogeochemistry in a global biochemistry and circulation model. Almost 2/3 of the Cant ocean uptake enters via gas exchange in waters that are lighter than the base of the ventilated thermocline. However, almost 2/3 of the excess Cant is stored below the thermocline...
November 3, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27785817/the-presence-of-seminal-plasma-especially-derived-from-stallion-semen-helps-preserve-chilled-asian-elephant-elephas-maximus-sperm-motility
#10
A Pinyopummin, S Mahasawangkul, K Kornkaewrat, S Rattanapirom, W Leartsang, S Kitkha
The effects of seminal plasma (SP), derived from autologous, homologous and heterologous species (stallion, boar and dog) on chilled Asian elephant sperm quality, were determined. Semen was collected from eight males and samples with ≥30% motile spermatozoa were used in the study. Semen was diluted with Tris-glucose-egg yolk extender, supplemented with different SP types and preserved at 4°C for 48 hr. Experiment 1 (n = 31), showed that the presence of SP (autologous) helped to preserve sperm quality in terms of sperm motility and acrosome integrity (p < ...
October 26, 2016: Andrologia
https://www.readbyqxmd.com/read/27769103/kinetic-activity-membrane-mitochondrial-potential-lipid-peroxidation-intracellular-ph-and-calcium-of-frozen-thawed-bovine-spermatozoa-treated-with-metabolic-enhancers
#11
R Boni, A Gallo, S Cecchini
Owing to the progressive decline of sperm motility during storage there is a need to find substances capable of enhancing sperm energy metabolism and motility and/or preserving it from oxidative damage. The aim of this study was to evaluate in frozen/thawed bovine spermatozoa the effect of several compounds, such as myo-inositol, pentoxifylline, penicillamine + hypotaurine + epinephrine mixture (PHE), caffeine and coenzyme Q10+ zinc + d-aspartate mixture (CZA), on either kinetic or metabolic parameters. Sperm kinetics was evaluated by Sperm Class Analyser whereas specific fluorochromes were used to evaluated mitochondrial membrane potential (MMP), intracellular pH, intracellular calcium concentration and lipid peroxidation...
October 21, 2016: Andrology
https://www.readbyqxmd.com/read/27754281/hw-04-1-usefulness-of-big-data-in-clinical-research
#12
Rae Woong Park
Big data indicates the large and ever-increasing volumes of data adhere to the following 4Vs: volume (ever-increasing amount), velocity (quickly generated), variety (many different types), veracity (from trustable sources). The last decade has seen huge advances in the amount of data we routinely generate and collect in pretty much everything we do, as well as our ability to use technology to analyze and understand it. The routine operation of modern health care systems also produces an abundance of electronically stored data on an ongoing basis as a byproduct of clinical practice...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27703846/dynamics-and-stability-of-directional-jumps-in-the-desert-locust
#13
Omer Gvirsman, Gabor Kosa, Amir Ayali
Locusts are known for their ability to jump large distances to avoid predation. The jump also serves to launch the adult locust into the air in order to initiate flight. Various aspects of this important behavior have been studied extensively, from muscle physiology and biomechanics, to the energy storage systems involved in powering the jump, and more. Less well understood are the mechanisms participating in control of the jump trajectory. Here we utilise video monitoring and careful analysis of experimental directional jumps by adult desert locusts, together with dynamic computer simulation, in order to understand how the locusts control the direction and elevation of the jump, the residual angular velocities resulting from the jump and the timing of flapping-flight initiation...
2016: PeerJ
https://www.readbyqxmd.com/read/27661683/storage-enhanced-nonlinearities-in-a-cold-atomic-rydberg-ensemble
#14
E Distante, A Padrón-Brito, M Cristiani, D Paredes-Barato, H de Riedmatten
The combination of electromagnetically induced transparency with the nonlinear interaction between Rydberg atoms provides an effective interaction between photons. In this Letter, we investigate the storage of optical pulses as collective Rydberg atomic excitations in a cold atomic ensemble. By measuring the dynamics of the stored Rydberg polaritons, we experimentally demonstrate that storing a probe pulse as Rydberg polaritons strongly enhances the Rydberg mediated interaction compared to the slow propagation case...
September 9, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27643747/cerebellar-control-of-eye-movements
#15
Shin C Beh, Teresa C Frohman, Elliot M Frohman
BACKGROUND: The cerebellum plays a central role in the online, real-time control, and long-term modulation of eye movements. EVIDENCE ACQUISITION: We reviewed the latest (fifth) edition of Leigh and Zee's textbook, The Neurology of Eye Movements, and literature in PUBMED using the following terms: cerebellum, flocculus, paraflocculus, vermis, oculomotor vermis, dorsal vermis, caudal fastigial nucleus, fastigial oculomotor region, uvula, nodulus, ansiform lobule, eye movements, saccades, ipsipulsion, contrapulsion, smooth pursuit, vergence, convergence, divergence, gaze-holding, down beat nystagmus, vestibulo-ocular reflex (VOR), angular VOR, translational VOR, skew deviation, velocity storage...
September 16, 2016: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/27643278/hw-04-1-usefulness-of-big-data-in-clinical-research
#16
Rae Woong Park
Big data indicates the large and ever-increasing volumes of data adhere to the following 4Vs: volume (ever-increasing amount), velocity (quickly generated), variety (many different types), veracity (from trustable sources). The last decade has seen huge advances in the amount of data we routinely generate and collect in pretty much everything we do, as well as our ability to use technology to analyze and understand it. The routine operation of modern health care systems also produces an abundance of electronically stored data on an ongoing basis as a byproduct of clinical practice...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27638585/clinical-electrophysiological-and-biochemical-markers-of-peripheral-and-central-nervous-system-disease-in-canine-globoid-cell-leukodystrophy-krabbe-s%C3%A2-disease
#17
Allison M Bradbury, Jessica H Bagel, Xuntian Jiang, Gary P Swain, Maria L Prociuk, Caitlin A Fitzgerald, Patricia A O'Donnell, Kyle G Braund, Daniel S Ory, Charles H Vite
Globoid cell leukodystrophy (GLD), or Krabbe's disease, is a debilitating and always fatal pediatric neurodegenerative disease caused by a mutation in the gene encoding the hydrolytic enzyme galactosylceramidase (GALC). In the absence of GALC, progressive loss of myelin and accumulation of a neurotoxic substrate lead to incapacitating loss of motor and cognitive function and death, typically by 2 years of age. Currently, there is no cure. Recent convincing evidence of the therapeutic potential of combining gene and cell therapies in the murine model of GLD has accelerated the requirement for validated markers of disease to evaluate therapeutic efficacy...
November 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27632556/association-of-prostate-blood-flow-with-male-lower-urinary-tract-symptoms
#18
Kuan-Yu Wu, Yuh-Shyan Tsai, Chia-Hong Chen, I-Hung Chen, Tzong-Shin Tzai, Yat-Ching Tong
PURPOSE: To investigate the association of prostate blood flow (PBF) with lower urinary tract symptoms (LUTS) in aged males using Doppler spectral waveform (DSW) analysis. PATIENTS AND METHODS: We performed a prospective analysis involving 133 aged males with clinical diagnosis of LUTS. DSW parameters (peak-systolic velocity (PSV), end-diastolic velocity (EDV), and resistive index (RI)) were measured at bilateral neurovascular bundles (NVB), periurethral, and capsular branches by Doppler transrectal ultrasound with the patient in the right lateral decubitus position...
2016: Urologia Internationalis
https://www.readbyqxmd.com/read/27616926/modelling-of-particle-laden-flow-inside-nanomaterials
#19
Yue Chan, Jonathan J Wylie, Liang Xia, Yong Ren, Yung-Tsang Chen
In this paper, we demonstrate the usage of the Nernst-Planck equation in conjunction with mean-field theory to investigate particle-laden flow inside nanomaterials. Most theoretical studies in molecular encapsulation at the nanoscale do not take into account any macroscopic flow fields that are crucial in squeezing molecules into nanostructures. Here, a multi-scale idea is used to address this issue. The macroscopic transport of gas is described by the Nernst-Planck equation, whereas molecular interactions between gases and between the gas and the host material are described using a combination of molecular dynamics simulation and mean-field theory...
August 2016: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/27597786/plume-dynamics-in-hele-shaw-porous-media-convection
#20
Robert E Ecke, Scott Backhaus
Mass transport in multi-species porous media is through molecular diffusion and plume dynamics. Predicting the rate of mass transport has application in determining the efficiency of the storage and sequestration of carbon dioxide. We study a water and propylene-glycol system enclosed in a Hele-Shaw cell with variable permeability that represents a laboratory analogue of the general properties of porous media convection. The interface between the fluids, tracked using an optical shadowgraph technique, is used to determine the mass transport rate, the spatial separation of solutal plumes, and the velocity and width characteristics of those plumes...
October 13, 2016: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
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