Abstract This paper examines how it is an evolutionary fact that neither men nor women are born equally and how the genomes of males and females are designed to be different so that physiologically males generally have higher levels of muscular mass, maximal aerobic and anaerobic power. It concentrates on these processes and attempts to explain why there are differences in these between men and women.
From the Paper "A women's maximal strength in either isometric or dynamic contractions of the leg muscles is on average sixty-five to seventy five percent of a mans maximum value. For trunk muscles women have only sixty to seventy percent of their male counter parts maximal values. The major disadvantage in maximal strength is in elbow flexion and extension. Females can only attain fifty percent of the male's maximum. Women have a smaller muscle mass than men so their maximal muscle strength will be different. There is no evidence for sex differences in the quality of skeletal muscle so it is concluded that muscle mass determines the potential for developing strength."
This paper discusses concentrated animal feeding operations (CAFOs) for swine and the environmental and human health hazards typically associated with such practices.
Abstract This paper explains that recent changes in swine-management practices, concentrated animal feeding operations (CAFOs), have resulted in a growing controversy surrounding the environmental and public health effects of modern swine production. The author points out two problems in swine-management practices, including an increase in health hazards because of the confined spaces, and public relations problems for the industry, particularly in the communities immediately situated near such facilities. The paper relates that the industry deal with these issues by using sound environmental health practices in the workplace and by providing anaerobic lagoons to help remediate the large amount of biological wastes that are inevitably generated at such CAFOs.
Table of Contents
Introduction
Review and Discussion
Background and Overview
Environmental and Health Hazards Associated with CAFOs for Swine
Current and Future Trends
Conclusion
From the Paper "During the last half of the 20th century, agricultural growth and development in the United States has become more closely linked to a wide range of social and environmental problems. Partially because of the industrialization of farming and food production, soil and water resources have been degraded, wildlife habitats have been destroyed, and rural communities have been dissolved and uprooted.The scale, mechanization, specialization, capital-intensity, and chemical-intensity of agricultural production have dramatically increased, with the result that large agribusinesses and individual farm operators have come under greater environmental scrutiny associated with the broader "greening" of public opinion since 1970."
Abstract The purpose of this study is to look at aerobic and anaerobic conditioning and exercise. Female soccer players are used for this study and the results of how well they do on specific tests are measured. The study also examines whether those that perform better on these tests are also better soccer players and concludes whether this type of training and exercise has an effect on the performance of female high school soccer players.
Introduction
Demographics
Background of the Study
Who am I as a Teacher?
How did I get to be that Way?
How did I get Here?
Personal Motivation
Rationale
Teacher Action Research
The Study
Purpose of the Study
The Research Question
What are the Issues and Concerns?
Overview
Review of the Literature
Procedures
Overview
Initial Testing
Test #1 - 1 Mile Run
Test #2 the Coopers Test
Test #3 40-yard Sprint
Test #4 300-yard Shuttle
Test #5 200-yard Dash
Test #6 400-yard Test
Conclusion
From the Paper "Marple Newtown School District is a suburban Philadelphia school district in Delaware County, Pennsylvania, in a community of approximately 35,000 people, most of who are involved in business and the professions. There are approximately 3,500 students enrolled in grade K through 12. Accelerated and advanced placement courses are offered in all academic areas. The academic curriculum of the district reflects the strength of traditional programs while meeting the changing needs of a technological society."
Abstract This paper examines the condition of fetal hypoxia, the lack of oxygen to the fetus which can result in stillbirths or fetal depression and how the fetus has built-in compensatory mechanisms to protect it from transient hypoxia. It looks at how experiments in animals have shown that the compensatory mechanisms at play during fetal hypoxia are redistribution of blood flow favoring vital organs, including the heart, brain, adrenal glands and the placenta; a decrease in total oxygen consumption and the dependence of some vascular beds on anaerobic metabolism. It looks at how these compensatory can allow the fetus to survive for moderately long periods of hypoxia (up to 30 minutes) without any decompensation to the vital organs, especially the heart and brain.
From the Paper "Due to the obvious difficulty of looking at fetal hypoxia in humans, animal models have been employed, but it is believed that they are applicable to the human condition. Experiments in animals have shown that the compensatory mechanisms at play during fetal hypoxia are: redistribution of blood flow favoring vital organs, including the heart, brain, adrenal glands, and the placenta; a decrease in total oxygen consumption; and the dependence of some vascular beds on anaerobic metabolism (Parer, 1997, p. 37). A study by Newman, Peebles, Harding, Springett and Hanson (2000) confirmed that the fetal blood supply redistribution in response to hypoxia functions to protect the vital organs."
Abstract This paper describes the functions, structure and activity of pyruvate decarboxylase. The paper also explains that the enzyme is very stable, and extremely easy to purify as well as its kinetic property and the oxidation processes for the enzyme. Additionally, the paper describes the anaerobic conditions of pyruvate decarboxylase and the three stages of aerobic respiration. Numerous figures are provided throughout the paper to help explain the topic.
From the Paper "The curve for v[S], the same as pryuvate decarboxylase, shows that catalytic activity inside of the enzyme has to be regulated by a substrate. The inactive enzyme can only be activated by 2-oxo acids and 2-oxo acid amides. These cannot be a substrate inside of the enzyme. The actual dissociation constant completely depends on electrophilic nature of a carbonyl group, the structure of the activator molecules are completely independent from the saturation concentration of the catalytic activity."
Abstract This paper defines respiration and distinguishes it from breathing. The paper discusses different chemical pathways in cellular respiration, such as the Krebs cycle, glycolysis, electron transfer pathway, production of ATP and utilization of glucose. The paper also studies aerobic and anaerobic respiration.
From the Paper "Cellular respiration is the process by which food molecules such as glucose are oxidized to provide energy in the form of adenosinetriphosphate ATP for use by all the energy-consuming activities carried out by the cell. It differs from breathing in that..."
Tags: cellular respiration, respiration, respirsatory pigments, Krebs cycle, glycolysis, electron transfer reaction
Abstract This paper looks at how formerly environmentally damaging methane gas from landfills is now being utilized for direct-use and gas-to-electric projects that not only benefit consumers but are actually responsible for improving the environment.
From the Paper "Three decades ago the notion of landfills was a distasteful one to most people. Landfills emit natural gases that are a by-product of decomposition of organic waste. Landfill gas emissions give off a noxious odor for those living in close proximity to landfills and the release of gases from aerobic and anaerobic oxygen free processes were thought to be detrimental to the environment. Landfill gas (LFG) is primarily composed of carbon dioxide and methane. Because of this it is flammable and potentially explosive in..."
Tags: waste management, greenhouse effect, alternative sources of fuel, heating, turbines, pollution, anaerobic processes, BMW, electricity, carbon dioxide
Abstract This paper discusses cellular respiration, the Kreb's cycle, oxidative phosphorylation, glycolysis, electron transfer system, substrate-level phosphorylation and electron transport phosphorylation. The paper further discusses where in the cell these processes take place and how, the enzymes involved, the substrates and end products.
From the Paper "Cellular respiration includes all the processes by which a cell uses food molecules, such as glucose to produce energy in the form of adenosinetriphosphate (ATP) for use by all the energy-consuming activities carried out by the cell. This occurs in the cytoplasm of alleukaryotic cells. Cells which respire in the presence of oxygen do so aerobically whereas those which do it in the absence of oxygen are said to respire anaerobically. Many aerobic cells are also capable of anaerobic respiration when temporarily deprived of oxygen..."
Abstract The cell engulfs food oxygen and lets out carbon dioxide yet everything must go through the cell membrane which is also the total surface area of the cell. This paper discusses metabollic processes within the cell and how these processes affect the cell's size.
From the Paper "The nucleus and cytoplasm use oxygen and food while producing waste through volume and weight. At times, the cell needs more membrane space in order to provide greater area for intake of oxygen and food and to release waste. However, as the cell grows larger, the ratio of the total surface area-weight ratio decreases. In other words, the greater cell content needs more oxygen and food than the membrane can take in and produces more waste than the membrane can release; its hydrophobic interior excludes the aqueous solutions of the cytoplasm and the external environment. "Although a large cell would be able to withstand more metabolic reactions (due to its larger volume) than a smaller cell, the larger..."
