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Data logger

Kazuhiro Ogai, Masakazu Fukuoka, Kei-Ichiro Kitamura, Kiyoshi Uchide, Tetsu Nemoto
Perspiration monitoring can be utilized for the detection of certain diseases, such as thermoregulation and mental disorders, particularly when the patients are unaware of such disorders or are having difficulty expressing their symptoms. Until now, several devices for perspiration monitoring have been developed; however, such devices tend to have a relatively large exterior, considerable power consumption, and/or less sensitivity. Recently, we developed a small, wireless device for perspiration monitoring...
November 24, 2016: Journal of Visualized Experiments: JoVE
Benjamin Merkel, Richard A Phillips, Sébastien Descamps, Nigel G Yoccoz, Børge Moe, Hallvard Strøm
BACKGROUND: The use of light level loggers (geolocators) to understand movements and distributions in terrestrial and marine vertebrates, particularly during the non-breeding period, has increased dramatically in recent years. However, inferring positions from light data is not straightforward, often relies on assumptions that are difficult to test, or includes an element of subjectivity. RESULTS: We present an intuitive framework to compute locations from twilight events collected by geolocators from different manufacturers...
2016: Movement Ecology
Daniel T C Cox, Richard Inger, Steven Hancock, Karen Anderson, Kevin J Gaston
Private gardens provide vital opportunities for people to interact with nature. The most popular form of interaction is through garden bird feeding. Understanding how landscape features and seasons determine patterns of movement of feeder-using songbirds is key to maximising the well-being benefits they provide. To determine these patterns we established three networks of automated data loggers along a gradient of greenspace fragmentation. Over a 12-month period we tracked 452 tagged blue tits Cyantistes caeruleus and great tits Parus major moving between feeder pairs 9,848 times, to address two questions: (i) Do urban features within different forms, and season, influence structural (presence-absence of connections between feeders by birds) and functional (frequency of these connections) connectivity? (ii) Are there general patterns of structural and functional connectivity across forms? Vegetation cover increased connectivity in all three networks, whereas the presence of road gaps negatively affected functional but not structural connectivity...
November 23, 2016: Scientific Reports
Sarah A Kane, James R Blake, Frank J McArdle, Philip Langley, Andrew J Sims
Blood pressure (BP) monitors rely on pulse detection. Some blood pressure monitors use pulse timings to analyse pulse interval variability for arrhythmia screening, but this assumes that the pulse interval timings detected from BP cuffs are accurate compared with RR intervals derived from ECG. In this study we compared the accuracy of pulse intervals detected using an ambulatory blood pressure monitor (ABPM) with single lead ECG. Twenty participants wore an ABPM for three hours and a data logger which synchronously measured cuff pressure and ECG...
November 23, 2016: Scientific Reports
François Routhier, Josiane Lettre, William C Miller, Jaimie F Borisoff, Kate Keetch, Ian M Mitchell, CanWheel Research Team
In recent years, studies have increasingly employed data logger technologies to record objective driving and physiological characteristics of manual wheelchair users. However, the technologies used offer significant differences in characteristics such as measured outcomes, ease of use and level of burden. In order to identify and describe the extent of published research activity that relies on data logger technologies for manual wheelchair users, we performed a scoping review of the scientific and grey literature...
November 15, 2016: Assistive Technology: the Official Journal of RESNA
Laurie L Wellman, Mairen E Fitzpatrick, Olga Y Hallum, Amy M Sutton, Brook L Williams, Larry D Sanford
Fear conditioning associated with inescapable shock training (ST) and fearful context re-exposure (CR) alone can produce significant behavioral fear, a stress response and alterations in subsequent REM sleep. These alterations may vary among animals and are mediated by the basolateral nucleus of the amygdala (BLA). Here, we used the GABAA agonist, muscimol (Mus), to inactivate BLA prior to CR and examined the effects on sleep, freezing and stress-induced hyperthermia (SIH). Wistar rats (n=28) were implanted with electrodes for recording sleep, data loggers for recording core body temperature, and with cannulae aimed bilaterally into BLA...
November 3, 2016: Neurobiology of Learning and Memory
Asiyanthi Tabran Lando, Hirofumi Nakayama, Takayuki Shimaoka
Methane from landfills contributes to global warming and can pose an explosion hazard. To minimize these effects emissions must be monitored. This study proposed application of portable gas detector (PGD) in point and scanning measurements to estimate spatial distribution of methane emissions in landfills. The aims of this study were to discover the advantages and disadvantages of point and scanning methods in measuring methane concentrations, discover spatial distribution of methane emissions, cognize the correlation between ambient methane concentration and methane flux, and estimate methane flux and emissions in landfills...
November 1, 2016: Waste Management
Mustafa Cansiz, Teymuraz Abbasov, M Bahattin Kurt, A Recai Celik
In this study, radio frequency electromagnetic field exposure levels were measured on the main streets in the city center of Diyarbakır, Turkey. Measured electric field levels were plotted on satellite imagery of Diyarbakır and were compared with exposure guidelines published by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). Exposure measurements were performed in dense urban, urban and suburban areas each day for 7 consecutive days. The measurement system consisted of high precision and portable spectrum analyzer, three-axis electric field antenna, connection cable and a laptop which was used to record the measurement samples as a data logger...
November 2, 2016: Journal of Exposure Science & Environmental Epidemiology
John L Orrock, Brian M Connolly
Patterns of animal activity provide important insight into hypotheses in animal behavior, physiological ecology, behavioral ecology, as well as population and community ecology. Understanding patterns of animal activity in field settings is often complicated by the need for expensive equipment and time-intensive methods that limit data collection. Because animals must be active to be detected, the timing of detection (e.g., the timing of capture) may be a useful proxy for estimation of activity time. In this paper, we describe a new method for determining timing of capture for small mammals...
2016: PloS One
Brian Helmuth, Francis Choi, Allison Matzelle, Jessica L Torossian, Scott L Morello, K A S Mislan, Lauren Yamane, Denise Strickland, P Lauren Szathmary, Sarah E Gilman, Alyson Tockstein, Thomas J Hilbish, Michael T Burrows, Anne Marie Power, Elizabeth Gosling, Nova Mieszkowska, Christopher D G Harley, Michael Nishizaki, Emily Carrington, Bruce Menge, Laura Petes, Melissa M Foley, Angela Johnson, Megan Poole, Mae M Noble, Erin L Richmond, Matt Robart, Jonathan Robinson, Jerod Sapp, Jackie Sones, Bernardo R Broitman, Mark W Denny, Katharine J Mach, Luke P Miller, Michael O'Donnell, Philip Ross, Gretchen E Hofmann, Mackenzie Zippay, Carol Blanchette, J A Macfarlan, Eugenio Carpizo-Ituarte, Benjamin Ruttenberg, Carlos E Peña Mejía, Christopher D McQuaid, Justin Lathlean, Cristián J Monaco, Katy R Nicastro, Gerardo Zardi
At a proximal level, the physiological impacts of global climate change on ectothermic organisms are manifest as changes in body temperatures. Especially for plants and animals exposed to direct solar radiation, body temperatures can be substantially different from air temperatures. We deployed biomimetic sensors that approximate the thermal characteristics of intertidal mussels at 71 sites worldwide, from 1998-present. Loggers recorded temperatures at 10-30 min intervals nearly continuously at multiple intertidal elevations...
October 11, 2016: Scientific Data
Stephen D W King, George Fitchett, Patricia E Murphy, Kenneth I Pargament, David A Harrison, Elizabeth Trice Loggers
PURPOSE: This study sought to validate for the first time a brief screening measure for religious/spiritual (R/S) distress given the Commission on Cancer's mandated screening for psychosocial distress including spiritual distress. METHODS: Data were collected in conjunction with an annual survey of adult hematopoietic cell transplantation (HCT) survivors. Six R/S distress screeners were compared to the Brief RCOPE, Negative Religious Coping subscale as the reference standard...
October 6, 2016: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
S E Bartington, I Bakolis, D Devakumar, O P Kurmi, J Gulliver, G Chaube, D S Manandhar, N M Saville, A Costello, D Osrin, A L Hansell, J G Ayres
Household Air Pollution (HAP) from biomass cooking fuels is a major cause of morbidity and mortality in low-income settings worldwide. In Nepal the use of open stoves with solid biomass fuels is the primary method of domestic cooking. To assess patterns of domestic air pollution we performed continuous measurement of carbon monoxide (CO) and particulate Matter (PM2.5) in 12 biomass fuel households in Janakpur, Nepal. We measured kitchen PM2.5 and CO concentrations at one-minute intervals for an approximately 48-h period using the TSI DustTrak II 8530/SidePak AM510 (TSI Inc, St...
January 2017: Environmental Pollution
Cory T Williams, Kathryn Wilsterman, Victor Zhang, Jeanette Moore, Brian M Barnes, C Loren Buck
The sexes differ in how and when they allocate energy towards reproduction, but how this influences phenotypic plasticity in daily activity patterns is unclear. Here, we use collar-mounted light loggers and triaxial accelerometers to examine factors that affect time spent above ground and overall dynamic body acceleration (ODBA), an index of activity-specific energy expenditure, across the active season of free-living, semi-fossorial arctic ground squirrels (Urocitellus parryii). We found high day-to-day variability in time spent above ground and ODBA with most of the variance explained by environmental conditions known to affect thermal exchange...
September 2016: Royal Society Open Science
Theodore J Weller, Kevin T Castle, Felix Liechti, Cris D Hein, Michael R Schirmacher, Paul M Cryan
Understanding of migration in small bats has been constrained by limitations of techniques that were labor-intensive, provided coarse levels of resolution, or were limited to population-level inferences. Knowledge of movements and behaviors of individual bats have been unknowable because of limitations in size of tracking devices and methods to attach them for long periods. We used sutures to attach miniature global positioning system (GPS) tags and data loggers that recorded light levels, activity, and temperature to male hoary bats (Lasiurus cinereus)...
October 4, 2016: Scientific Reports
Barbara B Brown, Douglas Tharp, Calvin P Tribby, Ken R Smith, Harvey J Miller, Carol M Werner
Although bicycling has been related to positive health indicators, few studies examine health-related measures associated with non-competitive community cycling before and after cycling infrastructure improvements. This study examined cycling changes in a neighborhood receiving a bike lane, light rail, and other "complete street" improvements. Participants wore accelerometers and global positioning system (GPS) data loggers for one week in both 2012 and 2013, pre- and post- construction completion. Participants sampled within 2 km of the complete street improvements had the following patterns of cycling: never cyclists (n=434), continuing cyclists (n= 29), former cyclists (n=33, who bicycled in 2012 but not 2013), and new cyclists (n=40, who bicycled in 2013 but not 2012)...
September 2016: Journal of Transport & Health
Concepción Crespo Turrado, Fernando Sánchez Lasheras, José Luis Calvo-Rollé, Andrés-José Piñón-Pazos, Manuel G Melero, Francisco Javier de Cos Juez
The storage of data is a key process in the study of electrical power networks related to the search for harmonics and the finding of a lack of balance among phases. The presence of missing data of any of the main electrical variables (phase-to-neutral voltage, phase-to-phase voltage, current in each phase and power factor) affects any time series study in a negative way that has to be addressed. When this occurs, missing data imputation algorithms are required. These algorithms are able to substitute the data that are missing for estimated values...
2016: Sensors
Cassondra L Williams, James W Hicks
Mammals and birds maintain high arterial partial pressure of oxygen (PO2 ) values in order to preserve near-complete hemoglobin (Hb) oxygen (O2) saturation. In diving mammals and birds, arterial O2 follows a primarily monotonic decline and then recovers quickly after dives. In laboratory studies of submerged freshwater turtles, arterial O2 depletion typically follows a similar pattern. However, in these studies, turtles were disturbed, frequently tethered to external equipment and confined either to small tanks or breathing holes...
November 15, 2016: Journal of Experimental Biology
T H Swartz, M L McGilliard, C S Petersson-Wolfe
Calf behaviors such as step activity, lying bouts, and lying time may be an indicator of calf health and welfare. To reduce time-consuming visual observations, the use of behavioral monitoring systems have been developed to capture these data. Previous studies have validated lying behaviors using an accelerometer (HPG; HOBO Pendant G data logger, Onset Computer Corp., Bourne, MA) in calves. However, the HPG does not measure step activity. The objectives of this study were to (1) validate step activity, lying bouts, and lying time of AfiTag II (AT2; AfiTag II, Afimilk Ltd...
September 7, 2016: Journal of Dairy Science
Stephanie Bonk, Audrey Nadalin, Wolfgang Heuwieser, Douglas Veira
Oesophageal tube feeding colostrum is used to ensure sufficient colostrum intake in newborn calves but the impact of tube feeding on animal behaviour is unclear. Therefore the objective of this study was to compare lying behaviour of tube-fed or bottle-fed dairy calves. Calves (n = 37) in 3 groups were offered 3·5 l colostrum 2 h after birth. Calves of the bottle group were fed with a nipple bottle. Calves of the placebo tubing group were tubed for 4 min but no colostrum was given and they were then fed with a nipple bottle...
August 2016: Journal of Dairy Research
T M Hill, H G Bateman, F X Suarez-Mena, T S Dennis, R L Schlotterbeck
Extensive measurements of calf body temperature are limited in the literature. In this study, body temperatures were collected by taping a data logger to the skin over the tail vein opposing the rectum of Holstein calves between 4 and 60 d of age during 3 different periods of the summer and fall. The summer period was separated into moderate (21-33°C average low to high) and hot (25-37°C) periods, whereas the fall exhibited cool (11-19°C) ambient temperatures. Tail temperatures were compared in a mixed model ANOVA using ambient temperature, age of calf, and time of day (10-min increments) as fixed effects and calf as a random effect...
August 31, 2016: Journal of Dairy Science
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