Clique
aqui para a versão originalClique
aqui para a versão original
World Mines Ministries Forum
500 Years of Mining in Brazil: a brief review - IF Machado, SFM
Figueirôa,
Investor's
Guide for
Mining in Brazil
Hints on the Sugar Loaf and Corcovado Mountain
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(eye-shaped K-feldspars; Augen = eyes in German) |
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On
Oil, in the Age of Digital Economy 
Indeed, the ability to control energy, whether it be making wood fires
or building power plants, is a prerequisite for civilization.
Isaac Asimov
The chess game is starting again: G-7 x Opec (and the oil companies are
in the audience).
Myself
At the end of the road, is Opec greener than Western governments?
Please
do not jump to conclusions.
Myself
With
all this talk about the daily fluctuations of Dow Jones and Nasdaq, one
must realize that oil is the missing link connecting the old
and
the new economies.
Myself
The
upstream end of the business ... is looking ever more attractive. Last
year, for example, the upstream activities of large oil firms made up
only
a fifth of their revenues, but contributed a staggering two-thirds of
their
profits. High oil prices account for some of that, but even in 1998,
when
oil prices crashed, the upstream contributed a disproportionately high
share of profits. In stark contrast, the downstream business is lousy,
whatever the oil price; most oil majors would happily shed a number of
their refineries, if only they could get a reasonable price for them.
The Economist, Oct. 26, 2000
International
Energy Agency
OPEC 
The CVRD Privatization - Raw
Materials Report, vol. 12, no. 4,
36-41 (1997)
Hobbies: reading, music (just
listening), WWW, movies, photography,
traveling, hats collection
Favorite or Interesting Links
Mining Journal, Jan. 7, 2000
The
habitat and nature of early life
E.G. NISBET AND N.H. SLEEP
Earth is over
4,500
million years old. Massive bombardment of the planet took place for the
first 500–700 million years, and the largest impacts would have been
capable
of sterilizing the planet. Probably until 4,000 million years ago or
later,
occasional impacts might have heated the ocean over 100 °C. Life on
Earth dates from before about 3,800 million years ago, and is likely to
have gone through one or more hot-ocean 'bottlenecks'. Only
hyperthermophiles
(organisms optimally living in water at 80–110 °C) would have
survived. It is
possible that
early life diversified near hydrothermal vents, but hypotheses that
life
first occupied other pre-bottleneck habitats are tenable (including
transfer
from Mars on ejecta from impacts there). Early hyperthermophile life,
probably
near hydrothermal systems, may have been non-photosynthetic, and many
housekeeping
proteins and biochemical processes may have an original hydrothermal
heritage.
The development of anoxygenic and then oxygenic photosynthesis would
have
allowed life to escape the hydrothermal setting. By about 3,500 million
years ago, most of the principal biochemical pathways that sustain the
modern biosphere had evolved, and were global in scope.
Nature 409, 1083
- 1091 (2001)
My
Family
Geology
of Wine, by Peigi Wallace, U.K.
As well as being influenced by climate and by the type of grape, the quality and special characters of a wine are strongly influenced by the geology of the vineyard. The relationships between a wine and its geology are described, within a stratigraphic framework, from the Precambrian Vinho Verde and Port, through the Devonian wines of the Rhine and Moselle, the Jurassic wines of Burgundy and the Cretaceous/Tertiary boundary sparkling wine of Champagne to the Tertiary and Quaternary wines of Bordeaux. Many of the other wines and formations which merit a detour are also discussed. The region considered is restricted to the more wine-conscious parts of Europe, especially France, Germany and Spain, simply because it is in these regions that legislation most strictly controls the 'appellation' and thus the geological origins of a wine are most closely defined.
 Lusaweb
- To navigate
is a must!
"...where the land ends and the sea begins..." |
F u t u r o l o g y
Source: Meadows, D. et al. Beyond the Limits: confronting global collapse; envisioning a sustainable future, Chelsea Green Publishing Co., 1992
Cool it! Take it easy! We have plenty of time for the proper corrections. Or don't we?
Energy-use: A - Tool
making;
B - Fire used; C - Neolithic Agricultural Revolution; D - Industrial
Revolution
(Watts steam engine);
E - Per capita energy-use in
1930 (37% of peak value); F - Peak energy-use; G - Present energy-use;
H - Per capita energy-use
in 2025, est. (37% of peak
value);
I, J, K, and L - Recurring future attempts at industrialization fail.
Other scenarios are possible.
More futurology
Source: Raskin, P.,
Gallopin,
G., Gutman, P., Hammond, A. and Swart, R. Bending
the Curve: Toward Global Sustainability
Stockholm Environment
Institute,
1998.
Environmental degradation is
not a necessary outcome of development. It results from a set of
historically
contingent choices for technology, production processes and consumption
patterns. Similarly, poverty and
extreme inequity are not inevitable, but are the outcome of a specific
set of social policy choices. Reversing the
negative trends, and creating a transition to global sustainability
will
not be easy. It will require a widespread
conviction that action is necessary and will depend on finding
sufficient
political will for action. Then, the
institutions, policies, and technologies for translating intentions
into
real-world solutions must be harnessed or
forged. The primary agents for change are governments, businesses, and
the new institutions of civil society, the
proliferating collection of non-governmental organizations engaged in
addressing
the full range of
environmental and social issues.
In a completely free
marketplace,
superior robots would surely affect humans as North American placentals
affected South American marsupials (and as humans have affected
countless
species). Robotic industries would compete
vigorously among themselves
for matter, energy, and space, incidentally driving their price beyond
human reach. Unable to afford the necessities of life, biological
humans
would be squeezed out of existence.
There is probably some
breathing
room, because we do not live in a completely free marketplace.
Government
coerces nonmarket behavior, especially by collecting taxes. Judiciously
applied, governmental coercion could support human
populations in high style on
the fruits of robot labor, perhaps for a long while.
Three passions, simple but
overwhelmingly strong, have governed my
life:
the longing for love, the search for knowledge, and unbearable pity for
the suffering of mankind.
The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.
You may reach me by e-mail at: ifmachado@hotmail.com
55-xx-19-3788
4696 or 3289 1097
55-xx-19-3289
1562
This home page was created by Web Designer Gustavo
Machado
Copyright © 1996-2004 Iran Ferreira
Machado
DISCLAIMER: This is a personal page, and not an official UNICAMP page. Its contents are of entire responsibility of Iran Ferreira Machado.
Last update: November 7, 2004
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