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Monitor lizard
The Monitor Lizard is large; adults can grow up to 7 feet. This book examines its habits, and the dangers it presents to the habitats that it has invaded, particularly Florida.
Book
Evolution and Applications of Recent Sensing Technology for Occupational Risk Assessment: A Rapid Review of the Literature
Over the last decade, technological advancements have been made available and applied in a wide range of applications in several work fields, ranging from personal to industrial enforcements. One of the emerging issues concerns occupational safety and health in the Fourth Industrial Revolution and, in more detail, it deals with how industrial hygienists could improve the risk-assessment process. A possible way to achieve these aims is the adoption of new exposure-monitoring tools. In this study, a systematic review of the up-to-date scientific literature has been performed to identify and discuss the most-used sensors that could be useful for occupational risk assessment, with the intent of highlighting their pros and cons. A total of 40 papers have been included in this manuscript. The results show that sensors able to investigate airborne pollutants (i.e., gaseous pollutants and particulate matter), environmental conditions, physical agents, and workers’ postures could be usefully adopted in the risk-assessment process, since they could report significant data without significantly interfering with the job activities of the investigated subjects. To date, there are only few “next-generation” monitors and sensors (NGMSs) that could be effectively used on the workplace to preserve human health. Due to this fact, the development and the validation of new NGMSs will be crucial in the upcoming years, to adopt these technologies in occupational-risk assessment.
Journal Article
The Monitor : the iron warship that changed the world
Discusses the Monitor and the Virginia, ironclad warships that confronted each other at the Civil War battle at Hampton Roads, Virginia, detailing what became of the ships after the battle and how the sunken Monitor was later investigated by scientists.
Book
Small, Smart, Fast, and Cheap: Microchip-Based Sensors to Estimate Air Pollution Exposures in Rural Households
Over the last 20 years, the Kirk R. Smith research group at the University of California Berkeley—in collaboration with Electronically Monitored Ecosystems, Berkeley Air Monitoring Group, and other academic institutions—has developed a suite of relatively inexpensive, rugged, battery-operated, microchip-based devices to quantify parameters related to household air pollution. These devices include two generations of particle monitors; data-logging temperature sensors to assess time of use of household energy devices; a time-activity monitoring system using ultrasound; and a CO2-based tracer-decay system to assess ventilation rates. Development of each system involved numerous iterations of custom hardware, software, and data processing and visualization routines along with both lab and field validation. The devices have been used in hundreds of studies globally and have greatly enhanced our understanding of heterogeneous household air pollution (HAP) concentrations and exposures and factors influencing them.
Journal Article
Big bad ironclad! : a Civil War steamship showdown
\"Ships are great for transport and sieges, but they tend to start sinking when cannons are fired at them. But what if the ship is covered with iron? Assuming it doesn't sink to the bottom of the ocean, wouldn't it be stronger and better than any other ship out there? This is the question that begins a race between the North and the South to come up with the biggest, best ironclad warships.\"--Page 4 of cover.
Book
Features and Practicability of the Next-Generation Sensors and Monitors for Exposure Assessment to Airborne Pollutants: A Systematic Review
In the last years, the issue of exposure assessment of airborne pollutants has been on the rise, both in the environmental and occupational fields. Increasingly severe national and international air quality standards, indoor air guidance values, and exposure limit values have been developed to protect the health of the general population and workers; this issue required a significant and continuous improvement in monitoring technologies to allow the execution of proper exposure assessment studies. One of the most interesting aspects in this field is the development of the “next-generation” of airborne pollutants monitors and sensors (NGMS). The principal aim of this review is to analyze and characterize the state of the art and of NGMS and their practical applications in exposure assessment studies. A systematic review of the literature was performed analyzing outcomes from three different databases (Scopus, PubMed, Isi Web of Knowledge); a total of 67 scientific papers were analyzed. The reviewing process was conducting systematically with the aim to extrapolate information about the specifications, technologies, and applicability of NGMSs in both environmental and occupational exposure assessment. The principal results of this review show that the use of NGMSs is becoming increasingly common in the scientific community for both environmental and occupational exposure assessment. The available studies outlined that NGMSs cannot be used as reference instrumentation in air monitoring for regulatory purposes, but at the same time, they can be easily adapted to more specific applications, improving exposure assessment studies in terms of spatiotemporal resolution, wearability, and adaptability to different types of projects and applications. Nevertheless, improvements needed to further enhance NGMSs performances and allow their wider use in the field of exposure assessment are also discussed.
Journal Article
Aktiia cuffless blood pressure monitor yields equivalent daytime blood pressure measurements compared to a 24-h ambulatory blood pressure monitor: Preliminary results from a prospective single-center study
In this preliminary study, we compared daytime blood pressure (BP) measurements performed by a commercially available cuffless—and continual—BP monitor (Aktiia monitor, Neuchâtel, Switzerland) and a traditional ambulatory BP monitor (ABPM; Dyasis 3, Novacor, Paris, France) from 52 patients enrolled in a 12-week cardiac rehabilitation (CR) program (Neuchâtel, Switzerland). Daytime (9am–9pm) systolic (SBP) and diastolic (DBP) BP from 7-day averaged data from Aktiia monitor were compared to 1-day averaged BP data from ABPM. No significant differences were found between the Aktiia monitor and the ABPM for SBP (μ ± σ [95% confidence interval]: 1.6 ± 10.5 [−1.5, 4.6] mmHg, P = 0.306; correlation [ R 2 ]: 0.70; ± 10/ ± 15 mmHg agreements: 60%, 84%). Marginally non-significant bias was found for DBP (−2.2 ± 8.0 [−4.5, 0.1] mmHg, P = 0.058; R 2 : 0.66; ±10/±15 mmHg agreements: 78%, 96%). These intermediate results show that daytime BP measurements using the Aktiia monitor generate data comparable to that of an ABPM monitor.
Journal Article
Assessment of the FreeStyle Libre 2 interstitial glucose monitor in hypo- and euglycemic cats
Abstract
Background
Continuous glucose monitoring systems have been validated for eu- and hyperglycemic cats. The FreeStyle Libre 2 (FSL2) is sufficiently accurate in people during hypoglycemia to guide critical treatment decisions without confirmation of blood glucose concentration (BG).
Objectives
Assess FSL2 accuracy in cats with hypoglycemia.
Animals
Nine healthy, purpose-bred cats.
Methods
Hyperinsulinemic-hypoglycemic clamps were performed by IV infusion of regular insulin (constant rate) and glucose (variable rate). Interstitial glucose concentration (IG), measured by FSL2, was compared to BG measured by AlphaTrak2. Data were analyzed for all paired measurements (n = 364) and separately during stable BG (≤1 mg/dL/min change over 10 minutes). Pearson's r test, Bland-Altman test, and Parkes Error Grid analysis respectively were used to determine correlation, bias, and clinical accuracy (P < .05 considered significant).
Results
Overall, BG and IG correlated strongly (r = 0.83, P < .0001) in stable glycemia and moderately at all rates of change (r = 0.69, P < .0001). Interstitial glucose concentration underestimated BG in euglycemia, but the BG-IG difference was progressively smaller as BG decreased (12.9 ± 12.2, 8.8 ± 11.2, −3.2 ± 7.4, and −7.8 ± 5.2 mg/dL in the ranges of 80-120 [n = 64], 60-79 [n = 29], 50-59 [n = 71], and 29-49 mg/dL [n = 53], respectively).
Conclusions
Although IG underestimates BG throughout most of the hypo-euglycemic range, IG generally overestimates BG in marked hypoglycemia (<60 mg/dL). It is therefore imperative to evaluate FSL2 results in this critical range with caution.
Journal Article
The Post‐Marketing Real‐World Outpatient Clinical Validation of Electronic Blood Pressure Monitors
This study evaluated the accuracy of a variety of home upper‐arm oscillometric blood pressure monitors (BPMs) from 448 participants against the FDA‐certified XYZ110 auscultatory device using simultaneous measurements. Descriptive statistics were used to summarize the key findings of the study. Device performance was evaluated referencing international standards (ISO 81060–2:2013), where a mean absolute difference of ≤5 mmHg was defined as “Accurate.” In addition, survey questionnaires completed by a subset of participants were analyzed to provide supplementary insights. A total of 448 consecutive outpatient clinical patients attending a routine clinical visit with their BPMs (male 215 and female 233) were eligible to participate in this study. The overall mean age of the participants was 62.35±12.59 years. Most of the BPMs included in this study were of the Omron brand (79.69%, n = 357), followed by Yuwell (5.8%, n = 26) and others. 76.32% of systolic blood pressure (SBP) measurements and 69.89% of diastolic blood pressure (DBP) measurements from BPMs exhibited differences of ≤5 mmHg compared to the reference calibrator. 70.89% ( n = 318) were accurate in measuring SBP, and 60.27% ( n = 270) were accurate in measuring DBP. Our study revealed that over 20% of BPMs exhibited discrepancies of more than 5 mmHg compared to a reference calibrator. Overall, the Omron U30, HEM‐7211, and U10 models demonstrated relatively higher accuracy in blood pressure measurements. Regular patient to patient validation of BPMs is crucial to ensure accurate measurements for daily use.
Journal Article
Divergent long-term impacts of lethally toxic cane toads
Biological invasions can massively disrupt ecosystems, but evolutionary and ecological adjustments may modify the magnitude of that impact through time. Such post-colonisation shifts can change priorities for management. We quantified the abundance of two species of giant monitor lizards, and of the availability of their mammalian prey, across 45 sites distributed across the entire invasion trajectory of the cane toad (Rhinella marina) in Australia. One varanid species (Varanus panoptes from tropical Australia) showed dramatic population collapse with toad invasion, with no sign of recovery at most (but not all) sites that toads had occupied for up to 80 years. In contrast, abundance of the other species (Varanus varius from eastern-coastal Australia) was largely unaffected by toad invasion. That difference might reflect availability of alternative food sources in eastern-coastal areas, perhaps exacerbated by the widespread prior collapse of populations of small mammals across tropical (but not eastern) Australia. According to this hypothesis, the impact of cane toads on apex predators has been exacerbated and prolonged by a scarcity of alternative prey. More generally, multiple anthropogenically-induced changes to natural ecosystems may have synergistic effects, intensifying the impacts beyond that expected from either threat in isolation.
Journal Article