Entstaubungstechnologie sorgt für gesunde Atemluft (nicht nur)

40 Energy
The Future? A “big bang” of evolution
Researchers believe bacteria hold keys for our future with regard to “clean energy”
Dramatic progress has
been made over the last
decade understanding the
fundamental reaction of
photosynthesis that evolved
in cyanobacteria 3.7 billion
years ago. For the first time
it used water molecules as
a source of electrons to
transport energy derived
from sunlight, while converting
carbon dioxide into
oxygen. The light harvesting
systems gave the
bacteria their blue
(“cyano”) colour, and
paved the way for plants to
evolve by “kidnapping” bacteria
to provide their photosynthetic
engines, and for
animals by liberating oxygen
for them to breathe, by
splitting water molecules.
For humans now there is the
tantalising possibility of tweaking
the photosynthetic reactions
of cyanobacteria to pro-
duce fuels we want such as hydrogen,
alcohols or even hydrocarbons,
rather than carbohydrates.
Progress at the research
level has been rapid,
boosting prospects of harnessing
photosynthesis not
just for energy but also for
manufacturing valuable compounds
for the chemical and
biotechnology industries.
Large amounts of
clean energy
Such research is running on
two tracks, one aimed at genetically
engineering real
plants and cyanobacteria to
yield the products we want,
and the other to mimic their
processes in artificial photosynthetic
systems built with
human-made components.
Both approaches hold great
promise and will be pursued in
parallel, as was discussed at a
recent workshop organised by
A future aim is to build an artificial leaf-like system comprised of self-assembling nanodevices that
are capable of regenerating themselves, just as in real plants or cyanobacteria.
the European Science Foundation
(ESF). A key point noted
by Eva Mari Aro, the vicechair
of the ESF conference,
was that there is now universal
agreement over the ability of
photosynthesis to provide large
amounts of clean energy in future.
While the sustainable options
currently pursued such
as wind and tidal power will
meet some requirements, they
will not be able to replace fossil
fuels as sources of solid energy
for driving engines, nor
are they likely to be capable
on their own of generating
enough electricity for the
whole planet. There is the potential
to develop dedicated
systems, whether based on
cyanobacteria, plants, or arti-
Im Rahmen der Umgebungslärmkartierung
veröffentlicht
das Eisenbahn-Bundesamt
(EBA) Lärmkarten des Schienenverkehrs.
Im Internet
(www.laermkartierung.eisen
bahn-bundesamt.de) können
die Karten in einer interaktiven
Kartenapplikation eingesehen
werden. Die Lärmkartierung
des EBA umfasst Eisenbahnstrecken
mit einem
Verkehrsaufkommen von
mehr als 60 000 Zügen pro
Jahr. Für die Kartierung der
mehr als 4600 Kilometer in
Frage kommenden Eisenbahnstrecken
wurden umfangreiche
Datenbestände der
DB Netz AG und der öffentlichenVermessungsverwaltungen
auf Landes- und Bundesebene
bearbeitet, harmonisiert
und in ein akustisches
Modell überführt. In die Be-
ficial components, capable of
much higher efficiencies than
biofuel producing crops, reaching
10 per cent efficiency of solar
energy conversion. This
would enable enough energy
and fuel to be produced for a
large part of the planet’s needs
without causing significant
loss of space for food production.
Lärmkarten veröffentlicht
rechnung der Lärmbelastung
fließen Parameter wie Fahrzeugart,
Bremssystem des Zuges,
Zuggeschwindigkeiten
sowie Eigenschaften der Fahrbahn
ein.
Die Veröffentlichung der
Lärmkarten im Internet bietet
den Bürgern die Möglichkeit,
sich über eine Suchfunktion
über die Lärmsituation in ihrer
Gemeinde zu informieren.
Des Weiteren stehen statistische
Informationen über die
Anzahl der von Schienenlärm
belasteten Personen zur Verfügung.
Die Lärmkarten bilden
auch die Grundlage für
Lärmaktionsplanungen der
Kommunen. In einem nächsten
Schritt wird das EBA die
Lärmsituation in 27 Ballungsräumen
durch die Kartierung
komplettieren.
Public Transport 41
Increased mobility by rail and bus –
public transport section expanded
Environmentally friendly mobility is one of the main subjects at InnoTrans
Mobility that is both environmentally
friendly and
suitable for meeting future
needs forms one of the
main themes of InnoTrans
2008. It features all the
various display areas of
the International Trade
Fair for Transport Technology,
and especially the
section devoted to Public
Transport.
There are some 260 exhibitors
in this section, with products
and services that are needbased
and offer ecological benefits
too. A higher proportion
of exhibitors will be coming
from abroad this year and they
now account for some 50 per
cent of the total. Increasing attention
has been given to the
subject of Public Transport in
recent years, along with qualitative
improvements and as a
result it now constitutes an
important, separate section at
InnoTrans.
Compared with other specialised
events the Public
Transport section at Inno-
Trans is a world leader in its
field. Covering an overall display
area of 14,000 square metres,
it is even larger than at
the event two years ago. In addition
to halls 2.1 and 4.1, hall
6.1 will also be used by ex-
hibitors in the Public Transport
section for the first time.
The expanded range of products
and services now includes
stationary installations,
passenger information systems,
fare management, information
technologies, traffic
management, communication,
data processing, planning,
consulting and engineering
services, transport
companies and much more.
This year’s display will be augmented
for the first time by a
presentation of buses for use
on local and regional services.
New buses can be seen, for
example, on an open air site
between halls 2.1 and 4.1.
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209
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