1,146 research outputs found

    The temperature tolerances of three species of marine fishes

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    The temperature tolerances of three species of marine fishes----Menidia menidia (common silverside), Pseudopleuronectes americanus (winter flounder), and Spheroides maculatus (northern swellfish)-have been determined. Following calculation of the median tolerance limit for various exposure times over a range of acclimation temperatures, the thermal tolerance was determined on a square graph by plotting lethal temperature against acclimation temperature. The tolerances determined are: 715°C squared for M. menidia; 635°C or 685°C squared for P. americanus, with cold tolerance limits of 1°C or 0°C, respectively; and 550°C squared for S. maculatus

    Cardiac Telehealth Rehabilitation: Empowering the Patient

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    Coronary artery disease or coronary heart disease is one of the leading causes of death in the world. Center-based cardiac rehab has long been a sustainable answer for recovery from an acute coronary event. However, the COVID-19 pandemic halted in-person appointments for cardiac rehab patients. Therefore, patients and their healthcare team met virtually. The objective of this literature review is to discover the efficacy and cost-effectiveness of cardiac telerehabilitation, as it will likely have a more prominent role in patient recovery from acute myocardial infarctions. To determine this, a literature review was conducted based on recent studies involving coronary artery disease patients in a center-based cardiac rehab and telehealth style cardiac rehab. Twenty-one articles were reviewed, and five themes were revealed. These include lifestyle modifications, secondary prevention, patient-led care and adherence, technology during COVID-19, and cost-effectiveness. From these themes, a concept map was constructed. The literature revealed no statistically significant difference in patient outcomes between telehealth-based and center-based cardiac rehab. Telehealth rehab also demonstrated cost-effectiveness in various delivery methods including telephone, short messaging services, mobile applications, and video calls. Therefore, it can be concluded that cardiac telehealth rehab can be offered as a primary option for cardiac rehab. With the common barriers to attending in person cardiac rehab including schedule, geographical barriers, and the COVID-19 pandemic, telehealth rehab offers the patient relief of some of these barriers

    Comparative biology and population dynamics of searobins (genus Prionotus) with emphasis on populations in the northwestern Gulf of Mexico

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    Eight species of Prionotus, collected from 5-100 m in the Gulf of Mexico along a cross-shelf transect off Freeport, Tx during October 1977-August 1981, were studied to determine life history patterns and how they partition resources. Only four species were abundant: P. tribulus, P. paralatus, P. longispinosus, and P. stearnsi. Prionotus spp. mature at 80 mm (P. stearnsi and P. rubio), 85 mm (P. tribulus and P. paralatus), 100 mm (P. ophryas), 105 mm (P. roseus), and 120 mm (P. longispinosus). Sizes at Age 1 were 99-140 mm (P. tribulus), 99-138 mm (P. longispinosus), 98-122 mm (P. paralatus), 75-125 mm (P. stearnsi), and 95-129 mm (P. ophryas). Most fish were less than 200 mm. Typical maximum sizes were 155-175 mm (P. tribulus), 145-160 mm (P. longispinosus), 160-165 mm (P. paralatus), 180-195 mm (P. rubio), 125 mm (P. stearnsi), and 155-160 mm (P. ophryas). Fish were typically 1-3 years old at these typical maximum sizes, and most were Age 1 and less. Apparent total annual mortality rates were 80-100%. The eight species fit into three categories based on their bathymetric distributions and community memberships: (1) members of the inshore white shrimp community which occurs from 5 m to about 16 m (P. tribulus); (2) members of the offshore brown shrimp community which occurs from about 36 to at least 100 m (P. paralatus, P. stearnsi, and P. roseus); and (3) members of a transition fauna which occurs between the outer edge of the white shrimp community and the inshore edge of the brown shrimp community from about 18-27 m (P. longispinosus, P. rubio, P. ophryas, and P. scitulus). Comparisons among species indicate a common pattern of population dynamics that favors r-strategy (short life spans, high mortality rates, and rapid turnover of biomass), but with temporally segregated spawning and spatially segregated distributions. Spawning grounds seem to lie toward the northcentral Gulf with current transport mechanisms carrying young toward the northwestern Gulf. Prionotus spp. from the northwestern Gulf show quite different life history attributes than their congeners from mid Atlantic and New England regions

    Emerging patterns of species richness, diversity, population density, and distribution in the skates (Rajidae) of Alaska

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    Six years of bottom-trawl survey data, including over 6000 trawls covering over 200 km2 of bottom area throughout Alaska’s subarctic marine waters, were analyzed for patterns in species richness, diversity, density, and distribution of skates. The Bering Sea continental shelf and slope, Aleutian Islands, and Gulf of Alaska regions were stratified by geographic subregion and depth. Species richness and relative density of skates increased with depth to the shelf break in all regions. The Bering Sea shelf was dominated by the Alaska skate (Bathyraja parmifera), but species richness and diversity were low. On the Bering Sea slope, richness and diversity were higher in the shallow stratum, and relative density appeared higher in subregions dominated by canyons. In the Aleutian Islands and Gulf of Alaska, species richness and relative density were generally highest in the deepest depth strata. The data and distribution maps presented here are based on species-level data collected throughout the marine waters of Alaska, and this article represents the most comprehensive summary of the skate fauna of the region published to date

    An Investigation of Public School Policies and Practices Regarding Married or Pregnant High School Students in the State of Washington

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    One of the needs of all young people is education. Becoming involved in the added responsibilities of marriage and/or pregnancy magnifies the necessity of acquiring adequate education or training. High school student marriage or pregnancy is still not looked upon with public favor, but education and training are highly approved goals for all teen-agers. As a result the public high school, by nature of its position, is being forced to deal with matters both approved of and disapproved of by society. The problem thus becomes, how can the school deal with this situation and make adjustments that will best accomplish the goal of providing for continuing education or training

    Forecasting Building Occupancy Using Sensor Network Data

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    ABSTRACT Forecasting the occupancy of buildings can lead to significant improvement of smart heating and cooling systems. Using a sensor network of simple passive infrared motion sensors densely placed throughout a building, we perform data mining to forecast occupancy a short time (i.e., up to 60 minutes) into the future. Our approach is to train a set of standard forecasting models to our time series data. Each model then forecasts occupancy a various horizons into the future. We combine these forecasts using a modified Bayesian combined forecasting approach. The method is demonstrated on two large building occupancy datasets, and shows promising results for forecasting horizons of up to 60 minutes. Because the two datasets have such different occupancy profiles, we compare our algorithms on each dataset to evaluate the performance of the forecasting algorithm for the different conditions

    Methods to Estimate the Comparative Effectiveness of Clinical Strategies that Administer the Same Intervention at Different Times

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    Clinical guidelines that rely on observational data due to the absence of data from randomized trials benefit when the observational data or its analysis emulates trial data or its analysis. In this paper, we review a methodology for emulating trials that compare the effects of different timing strategies, that is, strategies that vary the frequency of delivery of a medical intervention or procedure. We review trial emulation for comparing (i) single applications of the procedure at different times, (ii) fixed schedules of application, and (iii) schedules adapted to the evolving clinical characteristics of the patients. For illustration, we describe an application in which we estimate the effect of surveillance colonoscopies in patients who had an adenoma detected during the Norwegian Colorectal Cancer Prevention (NORCCAP) trial

    Aspiration before and after Supraglottoplasty regardless of Technique

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    Objective. To determine the incidence of preoperative and postoperative aspiration in infants who undergo supraglottoplasty. To determine the effect of cold steel and CO2 laser supraglottoplasty on aspiration in infants with severe laryngomalacia. Design. Retrospective study. Setting. Tertiary pediatric hospital. Patients. Thirty-nine patients who underwent CO2 laser-assisted supraglottoplasty (CLS) or cold steel supraglottoplasty (CSS) for severe laryngomalacia. Main Outcome Measures. Aspiration and upper-airway obstruction. Results. Thirty-nine patients met inclusion criteria (18 males, 21 females). Eighteen patients underwent CSS and 21 patients underwent CLS. 10/39 (25.6%) of the patients had preoperative aspiration, and 2/10 (20%) resolved after supraglottoplasty. New onset aspiration was found in 4/13 (30.8%) in the CSS group and 9/16 (56.3%) in the CLS group. Conclusions. There is no significant difference in the rate of postoperative new-onset aspiration or relief of upper-airway obstruction in the CLS or CSS, is temporary and can be managed with thickened diet or temporary tube feedings. The rate of persistent postoperative aspiration was statistically similar regardless of the method of surgery
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