faslan

 this is a very detail subject but im asking simple question

We can see  even toed ungulates Artiodactyla    Odd-toed ungulates   Perissodactyla  diversity varies in continents  and some please like Madagascar   Australia and don't  have any native. south america don't have any bovids native and bovid diversity is very low north america. Africa has no  Tylopoda  Cervidae only found on north tip.  but very high bovid diversity. 

Eurasia has  both bovid Cervidae diversity.

Please describe what factors causes this uneven distribution   

what were the causes for Ice age animals( large herbivores ) or animals extinct 15000-5000 years ago in tropical America ??

i learned North american mega fauna extinct because of global warming,a meteoroid impact BP 13000 years ago,and human impact also Eurasian ice age animals died out because of warming. climate warming probably gave the large mammals heat strokes

but how could End of Ice age affect Tropical megafuna because they were already adapted to hot environment, human hunted them for food but it's impossible to accept human were the cause of extinction

ok in conventional coal power plants we lost large amount of heat (35%) when steam condensation to water, why don't we just send stream back in to furnace without condense in to water more fuel save

i watched some articles and videos about Cooling severs with mineral oil,is it energy efficient than other methods

especially for a small to medium size sever room (that use air conditioning system to cool the room )

Ex- 0.25 dec ---> bin

0.25*2 =0.5 / take 0

0.5*2=1.0 / take1 (0 left so no more multiply )

answer 0.01 bin

ok Water boils and transform in to steam in room temperature at full vacuum.

why can't we use this method to desalinate seawater. we don't need any fuel for heating water but just only energy need for

maintenance ,pump water ,make water containers full vacuum

soybean milk cant the real milk but is so cheap and rich in nutrients less fat and very easy to home made

but i read it will increase Estrogen level in Men.

how far is it harm to to men

what is the daily recommended amount to drink for men

is Burning wood directly or making wood into wood gas more energy efficient ?

i made a wood gasifier in home but i read some articles saying syn gas have very low heating value and i'm little bit confused

which process can give more heat

burning 1 kg air dry wood or making 1 kg wood into wood gas then burn

What do you think about Origin of Borneo elephants

native to the island or descendants from elephants introduced by Sultan of sulu. it's told Borneo elephants are surviving Java elephants (thought to Extinct)

old gold buyers using many method to recycle old gold jewelry into pure 24 kt gold to resell

i want to know a good cost effective method to recycle old gold jewelry.purify it into pure 24Kt small gold bars.

one method i know is nitric acid method it costly and take long time

Geothermal energy especially in volcanic regions.dig as much as possible and send fresh water to turn in to steam and run power generator

yes solar and wind are clean,cheap energy.but guys, i'm talking about energy problems of poor countries.(GDP per capita is 300,400,to 1000 US $)

solar pane cost is likely 0.70$ per watt.a 500 w solar panel is cost 350$.it's just a dream for a household.so 10 MW solar power plant cost nearly 6-7 million $.their government can't afford.

but a biomass burning power plant not cost as much as solar panels. only building and power generator is costly.

growing biomass and harvesting will crate some jobs

Using Thorium Reactors instead of uranium will be a clean nuclear energy

solar,wind are costly. for built 100 MW solar power plant will cost millions of $.that why even rich countries can't built large solar power plants

Many low income African and Asian countries don't have any Fossil Fuel reserves and they import Coal and petroleum for electricity generation and it's really affect their economy.but many of these countries have huge marginal land it's suitable for bioenergy crops.

Growing some fast growing drought tolerant Grass species and built some biomass burning power plant will give them some relief.many tropical grass species can give high dry matter harvest and can grown on dry lands

( Napier grass can give up to 75 MT dry matter per hectare per year but can obviously we can get at least 15-20 Mt DM on dry land )

some fast growing tree species also can used for biomass burning (Ipil ipil tree Leucaena leucocephala )

and grass biomass also suitable for other countries

making bio diesel by soybean, palmoil increase deforestation

Your Ideas

i'm also thought a better black box. black box with some signal emitting system. so we can locate where is the plane

I think Algae bio diesel is the best alternative than corn,soybean,palm oil ,sugarcane,etc.but it's still in testing

i searched about it and saw video but i can't get right idea

what is the advantage of Quantum computer than normal computer

is it possible to multiply electric power by using motor-generator.i m not talking about usual perpetual motion.i 'm talking about multiplying electric power by using motor -Generator i think i will be more useful for developing countries they have electricity shortage and high price and it's affects production costs.

example. A Tea factory using 500 kWh per day and they get it from national grid.if they fit a large motor(that use only 180 kWh per day)and give power to motor from national grid and connect that motor to a power generator. it will give sufficient power to run the Tea factory.(entire factory using electricity from power generator) so actually that factory now use 180 kWh per day from national grid.(320 kWh save per day )

do you think is it possible

is it possible to make paper using only grass.if it will we can save millions of tress.

1)A^2-B^2 WE CAN WRITE THIS AS (A+B)(A-B) but if A,B are two floating point numbers these calculations may yield different results
why this
under what circumstances does a difference between two calculators arise

2)why it's hard to ( time and hardware complexity )to add two floating point numbers than integer numbers

3) is my examples right or wrong
integers = 25 ,-14, 11bin, A7Hex,17oct
floating points 12.14 -7.33 -11.11bin 74.12 oct

How Much Uranium need for run a 100MW nuclear power Plant (working 24 Hrs day )for a year

What Can we do if we invented a system to achieve Superconductivity in room temperature?

hi all

i have an idea to minimize cost and save to electricity by using motor and generator to electricity generation

example

i m using national grid to two- 10 hp motors to my mill daily 8 hours from

total electric consumption for a day 119.312 kWh

if i use national grid to 5 hp motor and connect it to a 80 kva generator and use to generate electricity to power my 2 motors

so i'm using only 29.828 kWh per day from national grid

is it possible ?

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some times a question comes to my mind

please some one tell me

example if i'm looking a star at night it's 10 light year distance from earth

so realy i'm seeing what is ten years before. is im right ?.