Tuesday, February 25, 2014

Week 7 Assignments


Germanium
Symbol: Ge
Electron configuration: Ar 3d10 4s2 4p2
Atomic number: 32
Melting point: 1,721°F (938.2°C)
Discovered: 1886
Discoverer: Clemens Winkler
Atomic mass: 72.64 ± 0.01 u

Germanium is a lustrous, hard, gray-white semi-metallic element with a crystalline and brittle structure. It is a semiconductor. Germanium and the oxide are transparent to infrared radiation. Germanium also has the unusual property that (like water) it expands as it freezes.

Germanium parts were vastly used during the first decade of semiconductor electronics, before being widely replaced by silicon parts. Silicon offers superior performance and quality control, but subjective tastes still make germanium highly desirable for certain sounds.



Alchemy – science, magic, art – or all three?

Chinese Medicine, as practiced and taught by many is an amalgam of alchemy, science, magic and art.  Historically Chinese medicine was deeply linked to Taoism, Tai Qi and scientific methods.

Wikipedia says,  
“In fact, in the early Song Dynasty, followers of this Taoist idea (chiefly the elite and upper class) would ingest mercuric sulfide, which, though tolerable in low levels, led many to suicide. Thinking that this consequential death would lead to freedom and access to the Taoist heavens, the ensuing deaths encouraged people to eschew this method of alchemy in favor of external sources.”

To practice Chinese Medicine effectively requires the capacity to view a patient through various theoretical frameworks. I think that to limit your ability to diagnose and treat within the paradigm of ‘science’ would severely limit the patients healing. In our culture we idealize science and devalue alternative approaches to explaining the natural world. Generally, we do not value alternative explanations of our experience in the world unless it can be validated by science- despite the limits which the tacit assumptions produce.



“Doing nothing, but not feeling guilty about it"

I generally include a bit of doing nothing- by myself, or with others- during my week. This week it included several long walks for the sake of nothing. While I could have been studying or working or doing my taxes or cleaning my house, I instead opted to do nothing, not produce, or materially change anything. Doing nothing felt awesome and I am a better human being for not ascribing to the predominate culture of finding my self-worth through being busy. 

Monday, February 17, 2014

week 6 assignments



Be
Beryllium
Atomic Number: 4
Atomic Weight: 9.012182
Melting Point: 1560 K (1287°C or 2349°F)
Boiling Point: 2744 K (2471°C or 4480°F)
Density: 1.85 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 2    
Group Number: 2    
Group Name: Alkaline Earth Metal

History:

The mineral beryl has been used at least since the Ptolemaic dynasty of Egypt. In the first century CE, Roman naturalist Pliny the Elder (not the beer) mentioned in his encyclopedia Natural History that beryl and emerald were similar.
Beryllium was once known as ‘glucinum’, meaning sweet, since beryllium and many of its compounds have a sugary taste. Unfortunately, beryllium and its compounds are poisonous and should never be tasted or ingested.

Uses:
Beryllium (Be) is one of the lightest of all metals and has one of the highest melting points of any light metal.  Beryllium metal is used in aerospace and defense applications because it is light weight and has great dimensional stability over a wide temperature range.  Beryllium-copper alloys are used in a wide variety of applications because of their electrical and thermal conductivity, high strength and hardness, good corrosion and fatigue resistance, and nonmagnetic properties.  Additionally, beryllium is used to make windows for X-ray tubes because it is realativly transparent. When exposed to alpha particles beryllium emits neutrons and is used as a neutron source. Don't be fooled though, its not all that fancy- other beryllium alloys are used for many of the parts on your car.



Avogadro's Hypothesis

1. Which of the following is not a characteristic of an hypothesis?

a. like a theory, it may be revised

2. Consider the following combining gas volumes:  Chlorine 50 mL   Oxygen 25 mL. What formula is suggested by the combining ratio of these gases?

a. Cl2O

3. Which of the following statements is true?

a. Equal volumes of gases contain equal numbers of particles

Avogadro's law states that, "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules".


Molecular Medicine

     After reading last week's articles I was really repelled by the concept of “Molecular Medicine.” It seems that the technology used thus far is primarily focused on dealing with symptoms and not actual healing. I understand that one of the promises of Molecular Medicine is patient compliance, but this is a type of passive compliance and does not engage the patient as the primary actor in their own health. This way of thinking about health and medicine affirms that individuals do not have the capacity to take care of their own bodies and reinforces a culture of domination through the expertise of doctors and scientists. 


An additional Link that I explored after visiting some of the recommended sites….
This link has great historical information regarding Alchemy and Female Alchemists!

http://www.womenalchemists.com/

Monday, February 10, 2014

week 5 assaignments


Argon
Ar
Atomic Number: 18
Atomic Weight: 39.948
Melting Point: 83.80 K (-189.35°C or -308.83°F)
Boiling Point: 87.30 K (-185.85°C or -302.53°F)
Density: 0.0017837 grams per cubic centimeter
Phase at Room Temperature: Gas
Element Classification: Non-metal
Period Number: 3    
Group Number: 18    
Group Name: Noble Gas
Name: From the Greek word for inactive, argos.
History: Argon was the first discovered of the noble gases! Argon was suspected to be present in air by Henry Cavendish in 1785 but was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay.

Argon is frequently used when an inert atmosphere is needed. It is used to fill incandescent and fluorescent light bulbs to prevent oxygen from corroding the hot filament. Argon is also used to form inert atmospheres for arc welding, growing semiconductor crystals and processes that require shielding from other atmospheric gases.


colors in my kitchen
(and garden)





Class Discussion

I think that spectrum eating is a fabulous (and fun) approach to eating! For the most part you can ensure that you are eating a variety of nutrients, antioxidants, amino acids, etc.. My consciousness around food has been greatly influenced by various authors, activists, farmers, and my own participation in food justice/ sovereignty work.

Below are a few links to resources that are Awesome!

http://www.democracynow.org/2008/4/16/stuffed_and_starved_as_food_riots
http://www.phatbeetsproduce.org/the-beet-blog/home/
http://www.takebackthetract.com/
http://www.cityslickerfarms.org/
http://www.peoplesgrocery.org/welcome?splash=1




Sunday, February 2, 2014

week 4 assaignments


Iron (Fe)
The Haber process is the production of ammonia from a reaction between nitrogen and hydrogen, using an iron catalyst.

The Haber process takes nitrogen gas and combines it with hydrogen gas to form ammonia gas.


N2(g) + 3H2(g) → 2NH3(g)     ΔH=-92.4 kJ


This may make more sense:


or maybe this...



We can see that methane and steam combine to form hydrogen and carbon monoxide, which in turn releases hydrogen. The hydrogen then combines with oxygen from the air to produce water. Finally, nitrogen gas is released which combines with hydrogen gas to form ammonia. This takes place under high pressure and temperature and with an iron catalyst.
In this reaction, the iron is used to lower the activation energy so that the N2 and H2 can be easier to break down. With the use of the Iron the activation energy is greater. 


Sources 
http://www.chemguide.co.uk/physical/equilibria/haber.htmlhttp://chemwiki.ucdavis.edu/Physical_Chemistry/Chemical_Equilibrium/Case_Studies/Haber_Process

http://en.wikipedia.org
http://ellemedit1234.wordpress.com/2013/04/27/the-future-of-the-haber-process/




Green Chemistry as a Social Movement?



While we may be getting excited about the rise of the ‘Green Chemisty paradigm’  the truth is that the majority of the world continues to use brown paradigm practices.

Unfortunately, green chemistry is being imagined without a reconsideration of whether it might make sense to not create products that generate toxins in the first place.

This is because culturally anything related to Science is privileged and does not require a discussion of practices and consequences. In fact, the myth of infinite benefit and the myth of the endless frontier blind us to accept that good intentions are enough for the world.

This leads to a complete lack of discussion around mistakes, historical precedence, interests and the undemocratic use of resources. In fact, we accept all of these things as unintended consequences, or a normal part of technological innovation.  This unthinkability may be the most subtle and most potent form of techno scientific power. This unthinkability leads us to accept  green washing.

From what we have read and discussed in class I have not been convinced that green chemistry proponents have the power or paradigm to change the dominant sociopolitical order. Instead, “Green Chemistry” acts as tool to prevent social unrest- it pacifies consumers creating a division between consumers and comunities.

Green chemistry offers only a partial framework, it fails to challenge the relationship of science and power. As I have said in class and on my previous posts, without an anti-capitalist framework Green Chemistry falls short of producing any meaningful change. It must be paired with anti-capitalist and cosmopolitan ideas that are nuanced enough to allow all of civil society to have equal decision-making power.





Monday, January 27, 2014

week 3 assignments


* Post a comment on "Neptune's Medicine Chest"


Balazars artcle, Neptune's Medicine Chest, is a fluff piece written like some flowery Christopher Columbus biography.


Rather than seeing nature as having an inherent integrity of its own, corporations and many scientists operating within the institutionalized culture of an organization view it as a source of raw materials for the creation of manufactured commodities.

Pharmaceutical companies that develop a cancer drug from the environment can patent the drug and maintain sole ownership over its use for 20 years. A corporation that genetically alters a species, not only owns the result, but also the subsequent generations of that altered species.

Thus when the problem is seen as “to beat other diseases that are rapidly -- alarmingly -- developing resistance to everything in the world's antibiotic medicine chest” and the answer to that problem follows the same logic that created it, we do not generate an actual solution- a commodity is introduced to the market.

It is our economic and cultural overdependence on antibiotics that is creating more and more antibiotic resistant pathogens. The problem is not that “the terrestrial world has been scoured so thoroughly that science is running out of places to look and breakthroughs to count on,” it is that we are destroying the biodiversity of our planets and our bodies at an alarming rate.

The privatization of nature allows imperialistic-minded corporations to patent it for profit at the expense of the environment- on land or on sea.


* Post a review of one of the links below

On the Advancing Green Chemistry Website the organization maps out their vision through 'The Twelve Principles of Green Chemistry'. The principles outline a model for industrial manufacturing that envisions pure and clean water leaving factories and polluted sources being brought back to life.  However, the organizations principals are ill conceived because they do not address the intrinsic aspect of the ecological crisis that is the systemic crisis of capitalism. Indeed, we cannot analyze the global ecological crisis separately from the crisis in which it is embedded.

Advancing Green Chemistry advocates that, “Green chemistry gives your company strategic advantage by enabling you to design and differentiate products and processes by environment and health criteria, and capture top and bottom line profits throughout the value chain.”

However, it is necessary to reject the logic of profit maximization and a productivist orientation, which take no account of the limits of the environment. Given the state of the planet, it seems naïve to me to advocate a “green” logic without an anticapitalist framework. Instead it is necessary to critique institutionalized environmentalism and create alternative models of production, distribution and consumption instead of putting a green veneer on the current model.

If not, Advancing Green Chemistry and the like never fully identify the root problem(s) and instead end up being an instrument in the service of green capitalism.




The Twelve Principles of Green Chemistry*
.                 Prevention 
It is better to prevent waste than to treat or clean up waste after it has been created.
.                 Atom Economy
 Synthetic methods should be designed to maximize the incorporation of all materials used in the process into the final product.
.                 Less Hazardous Chemical Syntheses
 Wherever practicable, synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health and the environment.
.                 Designing Safer Chemicals
 Chemical products should be designed to effect their desired function while minimizing their toxicity.
.                 Safer Solvents and Auxiliaries
 The use of auxiliary substances (e.g., solvents, separation agents, etc.) should be made unnecessary wherever possible and innocuous when used.
.                 Design for Energy Efficiency
 Energy requirements of chemical processes should be recognized for their environmental and economic impacts and should be minimized. If possible, synthetic methods should be conducted at ambient temperature and pressure.
.                 Use of Renewable Feedstocks
 A raw material or feedstock should be renewable rather than depleting whenever technically and economically practicable.
.                 Reduce Derivatives 
Unnecessary derivatization (use of blocking groups, protection/ deprotection, temporary modification of physical/chemical processes) should be minimized or avoided if possible, because such steps require additional reagents and can generate waste.
.                 Catalysis
 Catalytic reagents (as selective as possible) are superior to stoichiometric reagents.
.                 Design for Degradation
 Chemical products should be designed so that at the end of their function they break down into innocuous degradation products and do not persist in the environment.
.                 Real-time analysis for Pollution Prevention
 Analytical methodologies need to be further developed to allow for real-time, in-process monitoring and control prior to the formation of hazardous substances.
.                 Inherently Safer Chemistry for Accident Prevention
 Substances and the form of a substance used in a chemical process should be chosen to minimize the potential for chemical accidents, including releases, explosions, and fires.
- See more at: http://advancinggreenchemistry.org/green-chem-101/what-is-gc/#sthash.fQy7GFyj

Au


Au
Ausum, “Gold”
Atomic Number: 79
Atomic Mass: 196.96655 amu
Element Classification: Transition Metal
Appearance: Gold
Number of Protons/Electrons: 79
Number of Neutrons: 118

Uniqueness: Gold is the most malleable of all metals; a single gram can be beaten into a sheet of 1 square meter, or an ounce into 300 square feet.

Uses: currency, jewelry, electronics, art, dentistry, medicine…

Medicine: Gold is most notably used as a treatment for rheumatoid arthritis, although newer drugs have supplanted it as the treatment of choice. According to the University of Washington, Gold helps to relieve joint pain and stiffness- in some cases it has been observed to  prevent bone deformation. Additionally, Gold is used in treating cancer. Some anti-cancer drugs have trace amounts of gold in them that help to attack tumors.

Gold Side Effects: Gold has many side effects when used for medicinal purposes- Starting with skin rashes, a metallic taste in the mouth, mouth sores and thinning hair. More severe side effects of treatment include damage to your bone marrow, kidneys, liver, intestines and lungs.

Sources:

Monday, January 20, 2014

As


As
Arsenic
Atomic Number: 33
Atomic Weight: 74.92159

Element Classification: Semimetallic
Appearance: steel-gray, brittle semimetal

Uses: The main use of arsenic is for strengthening alloys of copper and lead . Arsenic is common in semiconductor electronic devices, such as car batteries, and is also used in the production of pesticides, herbicides, and insecticides.

Properties: Arsenic has a valence of -3, 0, +3, or +5. The elemental solid primarily occurs in two modifications, though other allotropes are reported. Gray arsenic is the usual stable form, with a melting point of 817°C. Arsenic and its compounds are poisonous.

Arsenic and Old Lace:  a play by Joseph Kesselring, written in 1939. Set in Brooklyn, the play is a comedy about a young man questioning his engagement and his two spinster aunts who have taken to murdering lonely old men by poisoning them with a glass of home-made elderberry wine laced with arsenic, strychnine, and "just a pinch" of cyanide.

Pollution: Widespread arsenic contamination of groundwater has led to a massive epidemic of arsenic poisoning in Bangladesh and neighboring countries. It is estimated that approximately 57 million people in the Bengal basin are drinking groundwater with arsenic concentrations elevated above the World Health Organization's standard of 10 parts per billion (ppb).

In the United States, arsenic is most commonly found in the ground waters of the southwest. Parts of New England, Michigan, Wisconsin, Minnesota and the Dakotas are also known to have significant concentrations of arsenic in ground water. Increased levels of skin cancer have been associated with arsenic exposure in Wisconsin.

Recent News: Air district officials in Los Angeles County filed a lawsuit Thursday seeking up to $40 million from  Exide Technologies, one of the world's largest manufacturers and recyclers of lead-acid batteries. Exicde has been accused of posing a health risk for emitting too much lead and arsenic, exposing tens of thousands of people to cancer-causing chemicals and has neglected to implement and pollution control systems. The plant, opened in the 1920s, smelts about 25,000 batteries a day. 


Sources:



http://www.latimes.com/local/lanow/la-me-ln-exide-battery-recycler-sued-20140116,0,2427141.story#ixzz2r08Oc0gG

http://en.wikipedia.org/wiki/Arsenic
http://en.wikipedia.org/wiki/Arsenic_poisoning

Recommended Reading:

http://www.scpr.org/blogs/environment/2014/01/10/15578/regulators-tighten-emission-limits-for-arsenic-oth/ utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+893KpccSouthernCaliforniaNews+(KPCC%3A+News)