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isaac Mao

isaac Mao's Public Library

May
31
2012

  • But despite the disadvantage in military hardware, the CPC's ultimate trump card was its land reform policy. The CPC continued to make the irresistible promise in the countryside to the massive number of landless and starving Chinese peasants that by fighting for the CPC they would be able to take farmland from their landlords.

  • When the European colonists conducted censuses, they wanted to identify the people throughout Rwanda-Burundi according to a simple classification scheme. They defined "Tutsi" as anyone owning more than ten cows (a sign of wealth) or with the physical feature of a longer nose, or longer neck, commonly associated with the Tutsi. A person could change from Hutu to Tutsi by obtaining enough cows to acquire the status.

  • However, Vaccaro and Barnett have shown that an energy cost can be fully avoided by using a reservoir based on something other than energy, such as spin angular momentum. Subatomic particles have spin angular momentum, a quantity that, like energy, must be conserved. Basically, instead of heat being exchanged between a qubit and thermal reservoir, discrete quanta of angular momentum are exchanged between a qubit and spin reservoir. The scientists described how repeated logic operations between the qubit’s spin and a secondary spin in the zero state eventually result in both spins reaching the logical zero state. Most importantly, the scientists showed that the cost of erasing the qubit’s memory is given in terms of the quantity defining the logic states, which in this case is spin angular momentum and not energy.

     

  • The results could also apply to hypothetical Carnot heat engines, which operate at maximum efficiency. If these engines use angular momentum reservoirs instead of thermal reservoirs, they could generate angular momentum effort instead of mechanical work.

     

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May
28
2012

  • What are amino acids? Amino acids are small molecules made up of atoms of carbon, oxygen, nitrogen, sulfur, and hydrogen. To make a protein, the amino acids are joined in an unbranched chain, like a line of people holding hands. Just as the line of people has their legs and feet "hanging" off the chain, each amino acid has a small group of atoms (called a sidechain) sticking off the main chain (backbone) that connects them all together. There are 20 different kinds of amino acids, which differ from one another based on what atoms are in their sidechains. These 20 amino acids fall into different groups based on their chemical properties: acidic or alkaline, hydrophilic (water-loving) or hydrophobic (greasy).

     
    • Amylase starts the process of breaking down starch from food into forms the body can use.
    • Alcohol dehydrogenase transforms alcohol from beer/wine/liquor into a non-toxic form that the body uses for food.
    • Hemoglobin carries oxygen in our blood.
    • Fibrin forms a scab to protect cuts as they heal.
    • Collagen gives structure and support to our skin, tendons, and even bones.
    • Actin is one of the major proteins in our muscles.
    • Growth hormone helps regulate the growth of children into adults.
    • Potassium channels help send signals through the brain and other nerve cells.
    • Insulin regulates the amount of sugar in the blood and is used to treat diabetes.
May
27
2012

  • Landauer's Principle describes the Landauer limit, which is the minimum possible amount of energy required to change one bit of information, as follows:

     
     

  • In fact, in the view of Jaynes (1957), thermodynamic entropy, as explained by statistical mechanics, should be seen as an application of Shannon's information theory: the thermodynamic entropy is interpreted as being proportional to the amount of further Shannon information needed to define the detailed microscopic state of the system, that remains uncommunicated by a description solely in terms of the macroscopic variables of classical thermodynamics, with the constant of proportionality being just the Boltzmann constant.

  • Savantism is a rare condition in which people with 'developmental delays' of the brain (notably autism spectrum), and/or brain injury, demonstrate profound and prodigious capacities and/or abilities far in excess of those considered normal.

May
25
2012

  • 专门从事冲突分析的国际危机组织(International Crisis Group)在其最新报告中证实,中国之所以在对待南中国海问题上没有统一的战略,是因为有太多的带着自己利益的部门参与,而且常常外交经验不足。郭伯雄任副职的军委比部委都更有权利,可以随时颠覆外交努力。"
May
18
2012

  • In the study, the investigators also suggest how the widely used pain drug Lyrica might work. The alpha 2 delta protein is the target of this drug and the new work suggests an approach to how other drugs could be developed that effectively turn particular neurotransmitter signals on and off to treat neurological disorders.

May
17
2012

  •     这个饮食指南明确提到:“中国人每天的参考食谱是:六两粮食四两肉,六两蔬菜一两油,一两鸡蛋二两鱼,半斤水果一斤奶。根据家庭结构特点,不同家庭的食谱可以有所调整。中国人均每天营养标准的参考值是:营养供应3300大卡,其中,植物营养2300大卡、动物营养1000大卡,动物营养占30%;蛋白质100 克、脂肪150克;粮食300克、蔬菜300克、水果250克、植物油50克;肉食200克、奶类500克、鱼类100克、蛋类50克”。如果按照这样的指南进行饮食,依照此营养指南饮食,中国肥胖人口五年内可以增加100%,糖尿病、心血管病、高血压、高血脂可以增加50%以上。

     

  •     2)我建议:两杯奶大约350克-400克已经不少了(国内外都有争议,我认为如此)。

     

May
16
2012

  • Open access comes in two degrees: Gratis OA is no-cost online access, while Libre OA is Gratis OA plus some additional usage rights.[2]

     

  • 新加坡近年来的外国移民人数激增,目前已经占全国劳动人口的三分之一左右,当局为此面对公众越来越大的不满,去年大选时执政党的支持率跌至1965年独立以来最低。

     

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