Tuesday, July 26, 2011

Unit 8 Entry:



Growing or discovered, dynamism is lost, ecosystem balance is lost, biodiversity is lost. To keep up with the demands of a growing population, modern technologies are being created to increase food production. The introduction of industrial agriculture aims to feed around 6 billion people. Industrial agriculture is a form of modern farming which refers to industrialized raising and production of crops, livestock, poultry, fish, etc.  A “confined animal feeding operation” was set up for selected animal species like cows, hogs, turkeys, chicken the aim of which is to produce more meat, eggs, milk and poultry products at low cost with high level of food safetyin a controlled environment. To maintain the health of the animals and to ensure the good quality of the end products, vitamin supplements, growth hormones and use of therapeutic use of antimicrobials are being used. The advantages of industrial agriculture are increased production of food to meet the increasing needs of a growing population. Another advantage is that because it is mass population poses a great threat to the conservation of biodiversity. As we try to conserve and protect our existing ecosystem and the habitat of millions of species animals and plants, we are also faced continuously with the challenges and threats of a fast growing human population. The overwhelming increase in the population would mean an increasing need for food. Humans feed on animals and plants. As more animals and plants are being eliminated faster than being replaced production, products are relatively cheaper, which is convenient to the consumers. This would also create a better economy as this will benefit the growers, harvesters, manufacturers and the sellers as well. However, industrial agriculture also has its disadvantages. This create environmental and social issues, pollution is inevitable, damages to fisheries are more likely, increased health issues and risks from pesticide and chemical exposure are evident. The long term drawback is the increased ozone pollution, destruction of ozone layer which would eventually lead to global warming. In an effort to minimize the ill effects of industrial agriculture, a sustainable agriculture is now being practiced as this is more acceptable. The 3 main goals are environmental stewardship, farm profitability and prosperous farming communities. Sustainable agriculture uses organic form of farming methods which relies on natural occurring biological process, eliminating the use of pesticides and   chemicals which is definitely beneficial to environment, society and consumers. Agricultural industry will be able to keep up with the rapid growth of the global human population. However, we should be more cautious and be more vigilant with the ill effects it may cause.
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Unit 11 Entry:

Throughout the existence of mankind, we continued to discover and develop newer various technologies to help us with our lives. These inventions are created for different reasons which range from culinary purposes to health purposes to entertainment purposes. Many of these technological advances allowed us to gain a better understanding of our body, the human body. By knowing more about the body, we are able to have more effective countermeasures against various problems in the body by being able to diagnose and examine the damaged part of the body. Here are some of the technologies that we utilize for our medical needs:


The X-Ray:
An X-ray
The X-ray is probably the most notable technology that allows us to understand our internal body. Since you probably know what x-rays are, I'll give you a brief explanation of an X-ray machine. X-rays are a form of electromagnetic radiation. In medicine, an x-ray machine sends individual x-ray particles through the body. A computer or a type of special film is then used to record the images that are created. Denser structures are not penetrated by the x-rays and therefore show up in the x-ray images -- this is how we examine our bones. Aside from examining the body, x-rays can also be used for the management of cancer (this type of treatment is called radiation therapy), however a higher amount of radiation is needed as opposed to imaging.






Electrocardiography:
Next, is the Electrocardiogram. The electrocardiogram, A.K.A. ECG or EKG), is a noninvasive test used to reflect underlying heart conditions by measuring the electrical activity in the heart. By positioning leads (which are electrical sensing devices) on the body in standardized locations, information about many heart conditions can be learned by looking for characteristic patterns on the ECG.


A ECG (left) and a spirometry machine (right)


Spirometry:
The last of the technologies that I will be naming is spinometry. Now what is spirometry?  Spirometry is a diagnostic test that is easily done in your doctor's office or at a nearby clinic or hospital. In this test, one would be asked to take a big breath before blowing as hard as he/she can into a machine. This machine measures the amount of air that a person can blow out from his lungs as well as how fast it is blown out. Spirometry is the most reliable way to test your lungs for chronic obstructive pulmonary disease and asthma.


As you can see, the three technologies that I mentioned are very vital in identifying problems within the body as well as helping us prepare for a good solution for the problem. X-ray machines, electrocardiograms and spirometery machines are just some of the many machines that are used to help diagnose and cure us from many of our body's disorders and injuries. 




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