Difference between pages "Nuclear power" and "Natural fiber"

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'''Nuclear Power''' is a method of [[energy]] generation. It uses nuclear fuel to produce heat, which is usually transformed into [[electricity]].
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Most [[plants]] and [[animals]] produce '''natural fibers'''. This article deals mainly with those fibers that are useful for Martian [[settlement]]. [[Synthetic fiber]] has succeeded natural fiber in many applications on [[Earth]], but it requires a larger industrial base than will not be available to initial settlements. Moreover, many synthetic fibers are made from crude oil, which is unlikely to exist on Mars in the first place.  Eventually an industry based on hydrogen extracted from water and carbon extracted from CO2 will emerge to compete with natural fibers.
  
Nuclear power has been considered as the preferred energy source for most plans for medium- to long-term human expeditions to [[Mars]]. It does not depend on [[environmental conditions|weather conditions]].
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==Plant Fibers==
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Plant fibers are likely the first to be produced in any settlement. Though they often involve post-processing, overall they require less resource and time investment than animal fiber.
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===Cotton===
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The [[cotton]] plant produces white fibers which surround its [[seeds]]. These seeds must be removed before the cotton can be processed. Cotton is commonly used in [[textiles]] and fine [[paper]]. Wet cotton clothing looses much of its [[insulation|insulating]] properties.<br />
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Once the seeds have been removed, cotton is almost completely pure [[cellulose]]<ref name="Smith">J.G. Smith - ''Organic chemistry'' Int'l ed. 2011. McGraw-Hill. ISBN 978-007-108186-3. p. 1059.</ref>
  
The availability of radioactive resources on Mars is unclear. Due to the vast effort of the nuclear enrichment process the nuclear fuel must be brought from [[Earth]], preventing the [[settlement]] from being [[independence from Earth|independent from Earth]].
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===Linen===
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[[Linen]] is obtained from the processed stocks of the [[flax]] plant. It is used in [[clothing]] and bedding.  
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===Hemp===
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[[Hemp]] is a strong fiber obtained from the plant of the same name. It was commonly used in ropes and rigging. Hemp bridges still span canyons and rivers in some regions on Earth. It has been replaced by [[synthetic fiber]] in many applications.
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===Bamboo===
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The fibers of [[bamboo]], once chemically processed, become soft and easily woven into textiles. The chemical treatment needed may restrict bamboo to [[food]] and structural applications.
  
The maintenance effort of a legacy nuclear power station requires a huge staff. However, due to Russian plans to build a fully self-contained device on Mars the required maintenance staff comprises only 6 engineers.
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==Animal Fibers==
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The production of animal fibers is more resource intensive than that of plant fibers. The animals take up space and resources, and require constant care by residents.
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===Silk===
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[[Silk]] is produced by the [[silkworm]] as it spins its cocoon. Silkworms feed on [[mulberry]] leaves, and may be impractical for small settlements.
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===Spider Silk===
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[[Spiders]] produce silk for shelter, support, and the capture of prey. So far, efforts to produce commercially viable quantities of [[spider silk]] have failed.
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===Wool===
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[[Wool]] is the long, flexible hair of [[mammals]] such as [[goats]], [[alpacas]] and [[sheep]]. It is a better thermal insulator than cotton or linen, and retains much of its insulation value even when wet. Certain wools are rough and can cause skin irritation.
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===Hair===
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Many types of [[hair]] are unfit for use as wool. These hairs are used as bristles in brushes and brooms. When still attached to the hide they can be fashioned into fir clothing.
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===Sinew===
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The ligaments of animals contain large amounts of the natural [[polymer]] [[collagen]]. Sinew is durable (for a natural fiber), and is used as thread and cordage.
  
==RTG==
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==References==
[[Radioisotope thermoelectric generator]]s (abbr.: RTG) are simple devices. They produce a heat difference, transformed by a [[thermocouple]] to electrical energy. The maintenance effort is low.
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<references />
However, RTGs do not provide enough power for a base.
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[[category:Non-Food Crops]]
 
 
==Nuclear reactor==
 
In a nuclear reactor the heat boils [[water]] to steam. [[turbine|Turbines]] are driven by the steam's pressure, spinning a dynamo to generate electric energy.
 
 
 
==Nuclear heating==
 
Heating [[greenhouse]]s and other [[building]]s may be done indirectly by the heat of the nuclear fission. The heat can be transported in pipes from the reactor to the buildings. Heat exchangers avoid nuclear pollution of the buildings.
 
 
 
==Open issues==
 
*What sort of nuclear fuel is needed?
 
*How long can the described nuclear power stations work without replenishment of nuclear fuel?
 
*What is known about nuclear resources on Mars?
 
 
 
==External links==
 
*[http://news.bbc.co.uk/2/hi/europe/3162129.stm BBC: Russia plans Mars nuclear station]
 
 
 
[[Category:Hi-tech]]
 
[[Category:Energy]]
 

Revision as of 10:35, 14 October 2020

Most plants and animals produce natural fibers. This article deals mainly with those fibers that are useful for Martian settlement. Synthetic fiber has succeeded natural fiber in many applications on Earth, but it requires a larger industrial base than will not be available to initial settlements. Moreover, many synthetic fibers are made from crude oil, which is unlikely to exist on Mars in the first place. Eventually an industry based on hydrogen extracted from water and carbon extracted from CO2 will emerge to compete with natural fibers.

Plant Fibers

Plant fibers are likely the first to be produced in any settlement. Though they often involve post-processing, overall they require less resource and time investment than animal fiber.

Cotton

The cotton plant produces white fibers which surround its seeds. These seeds must be removed before the cotton can be processed. Cotton is commonly used in textiles and fine paper. Wet cotton clothing looses much of its insulating properties.
Once the seeds have been removed, cotton is almost completely pure cellulose[1]

Linen

Linen is obtained from the processed stocks of the flax plant. It is used in clothing and bedding.

Hemp

Hemp is a strong fiber obtained from the plant of the same name. It was commonly used in ropes and rigging. Hemp bridges still span canyons and rivers in some regions on Earth. It has been replaced by synthetic fiber in many applications.

Bamboo

The fibers of bamboo, once chemically processed, become soft and easily woven into textiles. The chemical treatment needed may restrict bamboo to food and structural applications.

Animal Fibers

The production of animal fibers is more resource intensive than that of plant fibers. The animals take up space and resources, and require constant care by residents.

Silk

Silk is produced by the silkworm as it spins its cocoon. Silkworms feed on mulberry leaves, and may be impractical for small settlements.

Spider Silk

Spiders produce silk for shelter, support, and the capture of prey. So far, efforts to produce commercially viable quantities of spider silk have failed.

Wool

Wool is the long, flexible hair of mammals such as goats, alpacas and sheep. It is a better thermal insulator than cotton or linen, and retains much of its insulation value even when wet. Certain wools are rough and can cause skin irritation.

Hair

Many types of hair are unfit for use as wool. These hairs are used as bristles in brushes and brooms. When still attached to the hide they can be fashioned into fir clothing.

Sinew

The ligaments of animals contain large amounts of the natural polymer collagen. Sinew is durable (for a natural fiber), and is used as thread and cordage.

References

  1. J.G. Smith - Organic chemistry Int'l ed. 2011. McGraw-Hill. ISBN 978-007-108186-3. p. 1059.