Energy requirements during reproduction of Peromyscus maniculatus

1977 ◽  
Vol 55 (10) ◽  
pp. 1701-1704 ◽  
Author(s):  
Lucius L. Stebbins
Keyword(s):  
Energy Consumption ◽  
Food Consumption ◽  
Peromyscus Maniculatus ◽  
Energy Requirements ◽  
Daily Energy ◽  
Lactating Females ◽  
Breeding Groups ◽  
Specific Food

Weight-specific food consumption, gross daily energy consumption, and weights of breeding groups, lactating females, and young litters were monitored between time of mating and 2 weeks after weaning. No observable changes in weight-specific or gross daily energy consumption was evident in the 3 weeks before the week in which birth occurred, although weights of females had by then increased an average of 36%. Gross daily energy consumption increased by 96%, 136%, and 194%, respectively, during the 1st, 2nd, and 3rd weeks after birth. Weights of females dropped significantly in the week before weaning.

Some aspects of overwintering in Peromyscus maniculatus

1978 ◽  
Vol 56 (3) ◽  
pp. 386-390 ◽  
Author(s):  
Lucius L. Stebbins
Keyword(s):  
Food Consumption ◽  
Seasonal Changes ◽  
Peromyscus Maniculatus ◽  
Deer Mice ◽  
Conservation Of Energy ◽  
Caloric Consumption ◽  
Specific Food

Seasonal changes in growth and food consumption of captive deer mice Peromyscus maniculatus, caged in a seminatural environment were measured at Lethbridge, Alberta, Canada. Significant decreases in growth and in weight-specific food consumption occurred in winter months. Daily caloric consumption was not significantly lower in winter than in the fall but increased significantly in spring concurrently with both significant increases in weight and weight-specific food consumption. Results are discussed relative to the need for conservation of energy in winter and the contribution reduced growth and activity could make toward such a saving.

scholarly journals Food Security in Bangladesh: Present Status and Trend

2014 ◽  
Vol 24 (1-2) ◽  
pp. 263-271 ◽  
Author(s):  
MEA Begum ◽  
MI Hossain ◽  
L D’Haese
Keyword(s):  
Food Security ◽  
Energy Consumption ◽  
Total Energy ◽  
Food Consumption ◽  
Dietary Fat ◽  
Nutrient Intake ◽  
Secondary Data ◽  
Child Malnutrition ◽  
Energy Requirements ◽  
Dietary Energy

The study was is an attempt that offers better understanding the overall trend and pattern of food consumption and micro-nutrient intake using secondary data. The study revealed that total dietary energy consumption was 2230 kcal/capita/day which was higher than the total energy requirements of 2225 kcal/capita/day in 2003-2005. The shares of energy from protein (8.61%) and from fat (10.90%) were lower than 12% and 20% respectively, although upward trends for dietary fat and protein consumption were observed in between 1969-1971 and 2003-2005. The prevalence of child malnutrition declined in between 1992 and 2006. The results indicate that Bangladesh is not currently food secure in the sense of share of the total energy coming from protein and fat.DOI: http://dx.doi.org/10.3329/pa.v24i1-2.19178 Progress. Agric. 24(1&2): 263 - 271, 2013

EVALUATION OF ADEQUACY OF DAILY ENERGY CONSUMPTION AND NUTRITIONAL VALUE OF DIETS OF JUNIOR ATHLETES

2020 ◽  
Author(s):  
Элеонора Николаевна Трушина ◽  
Оксана Константиновна Мустафина ◽  
Татьяна Николаевна Солнцева ◽  
Валерий Дмитриевич Кузнецов
Keyword(s):  
Energy Consumption ◽  
Nutritional Value ◽  
Caloric Content ◽  
Added Sugar ◽  
Junior Athletes ◽  
Calorie Content ◽  
Daily Diet ◽  
Daily Energy ◽  
Total Calorie ◽  
Recommended Level

В исследовании участвовали 20 спортсменов-юниоров (мастера спорта и кандидаты в мастера спорта) в возрасте 17-18 лет и 10 добровольцев соответствующего возраста и интенсивности физической нагрузки. В результате исследований установлено, что суммарная калорийность потребленных за сутки продуктов в основном соответствовала энерготратам спортсменов обследованных групп. Соотношение белки/жиры/углеводы в суточном рационе спортсменов свидетельствует о недостаточной квоте углеводов в соответствии с формулой оптимального питания для юных спортсменов. При этом потребление добавленного сахара у спортсменов всех категорий превышало рекомендуемый уровень (10% от калорийности суточного рациона). The study involved 20 junior athletes (masters of sports and candidates for masters of sports) aged 17-18 and 10 volunteers of the corresponding age and intensity of physical activity. As a result of the research, it was found that the total calorie content of products consumed per day basically corresponded to the energy consumption of athletes in the surveyed groups. The ratio of protein / fat / carbohydrates in the daily diet of athletes indicates an insufficient carbohydrate quota in accordance with the optimal nutrition formula for young athletes. At the same time, the consumption of added sugar in athletes of all categories exceeded the recommended level (10% of the caloric content of the daily diet).

scholarly journals Performance of falling film plate evaporators in reconstructed multiple-effect evaporation station in sugar factory

2006 ◽  
Vol 10 (4) ◽  
pp. 55-61 ◽  
Author(s):  
Zoltan Zavargo ◽  
Aleksandar Jokic ◽  
Bojana Prodanic ◽  
Jasna Grbic ◽  
Rada Jeftic-Mucibabic
Keyword(s):  
Heat Transfer ◽  
European Union ◽  
Energy Consumption ◽  
General Trend ◽  
Regional Level ◽  
Energy Requirements ◽  
Falling Film ◽  
Evaporation Process ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients

General trend of free trade in regional level as well as in the direction of European Union has motivated sugar factories located in Serbia to invest into technologies that are more efficient in order to make their products more competitive at the markets in Europe. The aim of this work was to evaluate effects of falling film plate evaporators on the energy consumption of evaporation plant, as well as to validate performance of this type of evaporators. It was found that this type of evaporator decreased energy requirements and in the same time evaporation process was more effective due to high values of heat transfer coefficients. .

scholarly journals A New Method for the Calculation of Energy and Power Requirements of Bucket Wheel Excavators

2019 ◽  
Vol 10 (1) ◽  
pp. 15-20
Author(s):  
József András ◽  
József Kovács ◽  
Endre András ◽  
Ildikó Kertész ◽  
Ovidiu Bogdan Tomus
Keyword(s):  
Energy Consumption ◽  
Numerical Method ◽  
Horizontal Plane ◽  
Vertical Plane ◽  
New Method ◽  
Energy Requirements ◽  
Belt Conveyor ◽  
Analytical Formulas ◽  
Power And Energy ◽  
Continuous Working

Abstract The bucket wheel excavator (BWE) is a continuous working rock harvesting device which removes the rock by means of buckets armoured with teeth, mounted on the wheel and which transfers rock on a main hauling system (generally a belt conveyor). The wheel rotates in a vertical plane and swings in the horizontal plane and raised / descended in the vertical plane by a boom. In this paper we propose a graphical-numerical method in order to calculate the power and energy requirements of the main harvesting structure (the bucket wheel) of the BWE. This approach - based on virtual models of the main working units of bucket wheel excavators and their working processes - is more convenient than those based on analytical formulas and simplification hypotheses, and leads to improved operation, reduced energy consumption, increased productivity and optimal use of available actuating power.

scholarly journals Protection against CNS Ischemia by Temporary Interruption of Function-Related Processes of Neurons

1995 ◽  
Vol 15 (3) ◽  
pp. 433-439 ◽  
Author(s):  
Adelbert Ames ◽  
Kenneth I. Maynard ◽  
Stuart Kaplan
Keyword(s):  
Energy Consumption ◽  
Continuous Monitoring ◽  
Glucose Utilization ◽  
Complete Loss ◽  
Full Recovery ◽  
Energy Requirements ◽  
Ischemic Damage ◽  
Fold Reduction ◽  
Pharmacologic Agents ◽  
Reducing Energy

Previous studies have shown that most of the energy consumption of CNS tissue is used for processes that subserve signaling functions of the cells. Since these function-related processes are probably not essential to cell viability, blocking them reversibly with a combination of pharmacologic agents should protect cells from a reduction in energy metabolism. Preliminary experiments to test this hypothesis were performed on isolated rabbit retinas. They were maintained in a newly devised chamber that permitted continuous monitoring of electrophysiological function for ≥8 h. Ischemia was simulated by a 6-fold reduction in both O2 and glucose. This caused a rapid ( t1/2 75 s) and complete loss of the light-evoked response in the optic nerve. Untreated retinas showed full recovery after ½ h of deprivation, but only 50% recovery after 1 h and little or no recovery after 2 or 3 h. Retinas exposed during 3 h of deprivation to a combination of six agents that abolished electrophysiologic function and reduced glucose utilization [tetrodotoxin (TTX), 2-amino-4-phosphonobutyric acid (APB), 2-amino-5-phosphonovaleric acid (APV), amiloride, Mg2+, and Li+] showed full recovery. We conclude that reducing energy requirements by blocking functional processes can prevent ischemic damage.

Daily energy requirements in heart failure patients

Metabolism ◽  
1997 ◽  
Vol 46 (11) ◽  
pp. 1294-1298 ◽  
Author(s):  
Michael J. Toth ◽  
Stephen S. Gottlieb ◽  
Michael L. Fisher ◽  
Eric T. Poehlaman
Keyword(s):  
Heart Failure ◽  
Energy Requirements ◽  
Heart Failure Patients ◽  
Daily Energy

Energy Efficiency in Children With Myelomeningocele During Acute Use of Assistive Devices: A Pilot Study

2018 ◽  
Vol 35 (1) ◽  
pp. 57-75 ◽  
Author(s):  
Jennifer K. Sansom ◽  
Beverly D. Ulrich
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Pilot Study ◽  
Oxygen Uptake ◽  
Early Adulthood ◽  
Minimal Change ◽  
Assistive Devices ◽  
Assistive Device ◽  
Energy Requirements ◽  
Net Energy

Due to increased metabolic demands during walking, ∼50% of children with myelomeningocele transition to wheelchair use during adolescence/early adulthood. The purpose of our pilot study involving children with myelomeningocele was to determine: (a) energy expenditure needs during acute use of common assistive devices and (b) if walking poles are a feasible assistive device. Oxygen uptake was recorded for eight (5–12 years old) children in four conditions: independent, walker, crutches, and poles. Acute pole use did not significantly differ from independent walking net energy consumption or cost. Participants consumed more energy while walking with the walker than independently. Our pilot results suggest that (a) acute use of common assistive devices while walking increases energy consumption and cost versus independent and (b) poles are feasible assistive devices, resulting in slightly increased energy requirements. Poles may have provided “just enough” support with minimal change in energy requirements for our participants and, with practice, may enable children with myelomeningocele to remain community ambulators.

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