1,845 research outputs found

    REPORT ON HISTORICAL INVESTIGATION OF WOUNDED KNEE BATTLEFIELD SITE, PINE. RIDGE INDIAN RESERVATION, SOUTH DAKOTA

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    In April 1952, the National Park Service was requested by Representative E. Y. Berry of South Dakota, to consider the possibility of giving national recognition to Wounded Knee Battlefield, on the Pine Ridge Indian Reservation of South Dakota. Limited Date on the battlefield was presented on April 22 to the Advisory Board on National Parks, Historic Sites, Buildings, and Monuments. The Board asked that a field investigation and report be made by the Service to secure more comprehensive data. The Region Two office was requested to conduct this investigation by a note appended to Mr. Tolson\u27s letter of May 9 to Senator Karl E. Mundt

    Review of \u3ci\u3eHistoric Sites along the Oregon Trail\u3c/i\u3e By Aubrey L. Haines

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    Of all western themes, none quickens the pulse or captures the imagination more than the Oregon Trail. The Santa Fe Trail was more exotic. The California Gold Rush Trail had more feverish excitement and carried ten times the traffic. But the Oregon Trail remains the preeminent symbol of American pioneer virtues, evoking the image of the young family in a covered wagon braving hardships and dangers to seek a new home in the fabled Northwest. Aware of the sales value of this theme, publishers have been grinding out Oregon Trail books ever since Francis Parkman\u27s classic of that name, about his 1846 journey to Fort Laramie, first appeared in 1849. Among modern publishers, none have been more vigorous than Gregory Franzwa of the Patrice Press in turning out books capitalizing on a revival of the old pioneering wanderlust. His Oregon Trail Revisited has become the standard mileby- mile guidebook. Aubrey Haines\u27s Historic Sites along the Oregon Trail is a more ambitious effort, unreeling the live panorama of the surviving Oregon Trail by focusing on 394 identifiable forts, campsites, graves, trail remains, and landmarks. Haines, who has the rarely combined skills of engineer and historian, was selected by the National Park Service to make its initial Oregon Trail survey in 1972. Since then Congress has given this trail official status as a National Historic Trail. Recognizing public interest in the subject, Franzwa got permission from the park service to publish an enlarged version of the scarce official report. This he has done in a beautiful format, with twenty-four original 249 maps and over a hundred sharp photographs by Haines and his family assistants, detailed site descriptions supported by eyewitnesses and authorities, an excellent bibliography, a colorful jacket picture of Register Cliff, Wyoming, and a spirited preface by the National Park Service Director, Russell Dickenson. For the benefit of the growing cult of trail hounds there is even a checklist of available U.S. Geological Survey quadrangles and where to get them at what cost. This is an excellent and unusual example of a federal research project brought to full fruition on the popular level by private enterprise. The route described is the major route of the Oregon emigrants from 1841 to 1848, from Independence, Missouri to Oregon City-the basic Oregon Trail without its later branches, cutoffs, and curlicues. It is difficult to imagine a better antidote to today\u27s cynicism and moral confusion than a vacation designed to follow the old Oregon Trail with guidebooks, like this one, of certified scholarship. An auto is not a covered wagon and most of the trail has been obliterated by agriculture, highways, dams, and whatnot. However, the plains, deserts, and mountains are still largely intact, Chimney Rock still points to the heavens, Fort Laramie and Fort Bridger have been revived, the ghosts of Rachel Pattison and Rebecca Winters still haunt their graves, the trail is still grooved through South Pass-and westward, where the land is bright, lies Oregon

    Post‐Exercise Substrate Utilization after a High Glucose vs. High Fructose Meal During Negative Energy Balance in the Obese

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    Objective: To assess the effects of negative energy balance on the metabolic response of a meal containing either glucose or fructose as the primary source of carbohydrate after exercise in obese individuals in energy balance, or negative energy balance. Research Methods and Procedures: Fourteen adults with mean body mass index (BMI) 30.3 ± 1 kg/m2, age 26 ± 2 years, and weight 93.5 ± 5.4 kg, adhered to an energy‐balanced (EB) or a negative energy‐balanced (NEB) diet for 6 days. On Day 7, subjects exercised at 70% VO2peak for 40 minutes then consumed either high glucose (50 g of glucose, HG) or high fructose (50 g of fructose, HF) liquid meal. Substrate utilization was measured by indirect calorimetry for 3 hours. Blood samples were collected before exercise and 0, 30, 60, 120, and 180 minutes after consuming the meal. Results: The HG produced 15.9% greater glycemic (p \u3c 0.05) and 30.9% larger insulinemic (p \u3c 0.05) responses than the HF under both EB and NEB conditions. After the NEB diet, carbohydrate and fat oxidation did not differ for HG and HF. In contrast, carbohydrate oxidation increased 31%, and fat oxidation decreased 39% with HF compared with HG after the EB diet. Thus, HF and HG consumed after exercise produced marked differences in macronutrient oxidation when obese subjects followed an EB diet, but no difference when adhering to a NEB diet. Discussion: The data suggest that the use of fructose in supplements/meals may provide no additional benefit in terms of substrate utilization during a weight loss program involving diet and exercise

    Subtle changes in the flavour and texture of a drink enhance expectations of satiety

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    Background: The consumption of liquid calories has been implicated in the development of obesity and weight gain. Energy-containing drinks are often reported to have a weak satiety value: one explanation for this is that because of their fluid texture they are not expected to have much nutritional value. It is important to consider what features of these drinks can be manipulated to enhance their expected satiety value. Two studies investigated the perception of subtle changes in a drink’s viscosity, and the extent to which thick texture and creamy flavour contribute to the generation of satiety expectations. Participants in the first study rated the sensory characteristics of 16 fruit yogurt drinks of increasing viscosity. In study two, a new set of participants evaluated eight versions of the fruit yogurt drink, which varied in thick texture, creamy flavour and energy content, for sensory and hedonic characteristics and satiety expectations. Results: In study one, participants were able to perceive small changes in drink viscosity that were strongly related to the actual viscosity of the drinks. In study two, the thick versions of the drink were expected to be more filling and have a greater expected satiety value, independent of the drink’s actual energy content. A creamy flavour enhanced the extent to which the drink was expected to be filling, but did not affect its expected satiety. Conclusions: These results indicate that subtle manipulations of texture and creamy flavour can increase expectations that a fruit yogurt drink will be filling and suppress hunger, irrespective of the drink’s energy content. A thicker texture enhanced expectations of satiety to a greater extent than a creamier flavour, and may be one way to improve the anticipated satiating value of energy-containing beverages

    Fiber optic temperature sensor

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    A fiber optic temperature sensor uses a light source which transmits light through an optical fiber to a sensor head at the opposite end of the optical fiber from the light source. The sensor head has a housing coupled to the end of the optical fiber. A metallic reflective surface is coupled to the housing adjacent the end of the optical fiber to form a gap having a predetermined length between the reflective surface and the optical fiber. A detection system is also coupled to the optical fiber which determines the temperature at the sensor head from an interference pattern of light which is reflected from the reflective surface

    Effects of Food Form on Food Intake and Postprandial Appetite Sensations, Glucose and Endocrine Responses, and Energy Expenditure in Resistance Trained Vs. Sedentary Older Adults.

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    Limited research has suggested that the food form of nutritional supplements (FFNS) and resistance training (RT) influence ingestive behaviour and energy balance in older adults. The effects of the FFNS and RT on acute appetitive, endocrine and metabolic responses are not adequately documented. The present study assessed the effects of the FFNS and RT on postprandial appetite sensations (hunger and fullness), endocrine responses (plasma insulin, cholecystokinin, ghrelin and glucagon-like peptide-1 (GLP-1)), metabolism (glucose, energy expenditure and RER) and food intake (satiation) in older adults. On separate days, eighteen sedentary (Sed) and sixteen RT healthy adults (age 62–84 years) consumed 12·5 % of their energy need as an isoenergetic- and macronutrient-matched solid or beverage. Postprandial responses were assessed over 4 h. No RT × FFNS interactions were observed for any parameter. Fasting cholecystokinin was higher in the RT v. Sed group (P \u3c 0·05). RT did not influence fullness, but fullness was higher following the solid v. beverage intake (P \u3c 0·01). Neither RT nor FFNS influenced hunger. Glucose and insulin were higher after the solid v. beverage intake (P \u3c 0·01). Ghrelin, GLP-1 and energy expenditure were not different between the RT and FFNS groups. Postprandial cholecystokinin was higher in the RT v. Sed group (P \u3c 0·01) and for solid v. beverage (P \u3c 0·05). RER was lower for solid v. beverage (P \u3c 0·001). Neither RT nor FFNS independently or interactively influenced food intake 2 h after post-nutritional supplements. In conclusion, RT had little influence on ingestive behaviour. The appetitive and endocrine responses suggested the solid-promoted satiety; however, the FFNS did not alter subsequent food intake

    Altered expression of microRNA in the airway wall in chronic asthma: miR-126 as a potential therapeutic target

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    Background: The role of microRNAs (miRNAs) in regulating gene expression is currently an area of intense interest. Relatively little is known, however, about the role of miRNAs in inflammatory and immunologically-driven disorders. In a mouse model, we have previously shown that miRNAs are potentially important therapeutic targets in allergic asthma, because inhibition of miR-126, one of a small subset of miRNAs upregulated in the airway wall, effectively suppressed Th2-driven airway inflammation and other features of asthma. In the present study, we extended investigation of the therapeutic potential of miRNA inhibition to our well-established model of chronic asthma. Methods: Female BALB/c mice were systemically sensitised with ovalbumin (OVA) and chronically challenged with low mass concentrations of aerosolised OVA for up to 6 weeks. Airway tissue was obtained by blunt dissection and RNA was isolated for miRNA profiling. On the basis of the results obtained, animals were subsequently treated with either an antagomir to miR-126 (ant-miR-126) or a scrambled control antagomir once weekly during the 6 weeks of chronic challenge, and the effects on airway inflammation and remodelling were assessed using established morphometric techniques. Results: Compared to naïve mice, there was selective upregulation of a modest number of miRNAs, notably miR-126, in the airway wall tissue of chronically challenged animals. The relative increase was maximal after 2 weeks of inhalational challenge and subsequently declined to baseline levels. Compared to treatment with the scrambled control, ant-miR-126 significantly reduced recruitment of intraepithelial eosinophils, but had no effect on the chronic inflammatory response, or on changes of airway remodelling. Conclusions: In this model of chronic asthma, there was an initial increase in expression of a small number of miRNAs in the airway wall, notably miR-126. However, this later declined to baseline levels, suggesting that sustained changes in miRNA may not be essential for perpetuation of chronic asthma. Moreover, inhibition of miR-126 by administration of an antagomir suppressed eosinophil recruitment into the airways but had no effect on chronic inflammation in the airway wall, or on changes of remodelling, suggesting that multiple miRNAs are likely to regulate the development of these lesions

    Umbilical cord blood testosterone and childhood internalizing and externalizing behavior: a prospective study

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    Extent: 8 p.Antenatal testosterone exposure influences fetal neurodevelopment and gender-role behavior in postnatal life and may contribute to differences in developmental psychopathology during childhood. We prospectively measured the associations between umbilical cord blood testosterone levels at birth and childhood behavioral development in both males and females from a large population based sample. The study comprised 430 females and 429 males from the Western Australian Pregnancy Cohort (Raine) Study where umbilical cord blood had been collected. Total testosterone concentrations were determined by mass spectrometry and bioavailable testosterone (BioT) levels were calculated. At two, five, eight and ten years of age, the participants completed the Child Behavior Checklist (CBCL). Linear regression models were used to analyse the relationship between BioT concentrations (in quartiles) and CBCL scores (total, internalizing, externalizing and selected syndrome). Boys had higher mean CBCL T-scores than girls across all ages of follow-up. There was no significant relationship between cord blood BioT quartiles and CBCL total, internalizing and externalizing T-scores at age two or five to ten combined. In the syndrome score analyses, higher BioT quartiles were associated with significantly lower scores for attention problems for boys at age five, eight and ten, and greater withdrawal symptoms in pre-school girls (age five). We did not identify a consistent relationship between antenatal testosterone exposure and total, internalizing or externalizing behavioral difficulties in childhood. Higher umbilical cord BioT levels were associated with lower scores for attention problems in boys up to 10 years and more withdrawn behavior in 5-year-old girls; however, these findings were not consistent across ages and require further investigation in a larger sample.Monique Robinson, Andrew J.O. Whitehouse, Peter Jacoby, Eugen Mattes, Michael G. Sawyer, Jeffrey A. Keelan and Martha Hicke
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