Radioactivity is actually used for medical purposes, following the principle of the right dosis for the right purpose. In fact, radioactivity is found everywhere as a form of natural background radiation, which actually plays a role in evolution: Due to a slight background radiation, there is cellular reformation occuring everywhere, all the time, leading to new forms of individuals – only a high overdosis will lead to harmful cellular overreaction like e. g. cancer. This is a question of radioecology.

The most common types of radiation are alpha, beta, and gamma decay, but there are several other varieties of radioactivity. The so-called alpha ray emission is in fact big helium particles emitted in hydrogen fusion. The most popular example is sun, a constant and massive hydrogen fusion, emitting a massive energy output. Alpha decay is about 7000 times bigger than beta decay, which occurs in form of negative or positive ionised radiation: Beta radiation is the result of either a neutron changing to a proton, which leads to the emission of a beta particle with the same mass and charge as an electron, and a number of neutrinos (negative ionised beta radiation), or the change of a proton to a neutron, leading to emission of a positron and a neutrino (positive ionised beta radiation).

During this process, the third commonly known radiation type, gamma ray, is emitted: The positron interacts with an electron, causing the neutralization of both, and two gamma ray photons with the energy equal to the mass of the positron and electron are emitted.

http://www.environmental-studies.de/Radiooekologie/Rad.html
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Today more than ever this slogan happens to undergo a revival: In times of globalization the market of publication is forced to face a flood of new-coming academics, who are all eager to sustain a certain academic position and for that to publish their articles in highly recommended magazines or scientific journals. As long as those recommended journals publish their articles frequently, scientists can be sure to be perceived in the academic discourse.
To survive on the rapidly altering and increasing market, academics have to adjust their writings’ styles to meet the demands of the magazines and journals. This issue is oftentimes underestimated and not rarely leads to rejection of manuscripts. Reasons for that are on the one hand the strict expectations of editors. According to their demands manuscripts have to meet with the specific journal’s requirements of style and formalities. Many authors do not accurately proof, which style is demanded and thus fail to reach a good first impression in the editing office.
Moreover many manuscripts lack a firm use of language, sometimes because of bad structure, unacademic style or even worse: a bad translation. What is even more appelling to the big and world wide read scientific journals is the ignorance with which citations are treated. If somebody misses to cite correctly he not only shows his lacking knowledge how to handle scientific resources, but further also might offend a common standard of research in this specific discourse.

To put it short, even today the phrase prooves to be relevant in respect of the contemporary research situation and also competition.

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Fast and efficient
Today the internet is the perfect medium for scientists to win a wider audience for their work by publishing their papers online. The advantages of online publication in comparison to traditional print publication are manifold. For once, the submitted text can be accessed worlwide by anyone anytime. Online publication is non-exclusive, which means that the text can still be marketed and sold otherwise. Various modes to search the text for central data, key words or results are possible with online publications. Especially in the world of natural science where results need to be updated continuously, the speed of online publication is a plus, too. Another interesting fact is that it is possible to include 3D-graphics, sounds or animations into the online text, a possibility printed scientific texts do not offer. The submitted text reaches, if placed on the right site, a professional academic circle which enables the author to participate in the scientific discussion of his or her field. Even students who have not published any work yet, can take part and submit papers.

Finding the right place to publish
Texts can be published in e-journals, e-book-form or other formats. The portals all give detailed instruction on how to use their services. Most portals are not specialised concerning their subject matter. There are websites that cover special areas like natural science or health science, though. The right portal will be the one which is linked to the right websites and therefore will be found by the right readers. The selection of the right portal may also depend on the country the scientist works in. Most sites are national sites, often university websites. Then there is the question of publication fees. Most university sites are free. Whereas commercial sites sometimes charge fees for their services.

The List
Here is a selection of portals offering the online publication of scientific texts:
Natural sciences – www.nature.com
Health science – www.elsevierhealth.com
Directory of open access journals – www.doaj.org
HighWire, Stanford University - highwire.stanford.edu/
Pro Quest (USA) – www.proquest.com/en-US/catalogs/services/author_services.shtml
DissOnline (Germany) – www.dissonline.de
Austrian Research Centers – www.ait.ac.at/home_en.html
Science Manager (publication fee) – www.sciencemanager.com

 Solarzellen sind aus Halbleitermaterial konstruiert, das in der Lage ist, entweder Licht und Wärme zu transportieren bzw. zu isolieren. Das am häufigsten verwendete Halbleitermaterial ist das in der Natur vorhandene Silizium. Silizium lässt sich umweltverträglich verarbeiten und ist ausreichend auf unserem Planeten vorhanden. Damit ist die Solarzelle im Vergleich zu herkömmlichen Energiegewinnungssystemen sehr umweltverträglich, wie aktuelle Umweltanalysen bestätigen. Das macht die Photovoltaik Technologie so interessant.

 In Deutschland ist die Photovoltaik Technologie nach wie vor auf dem Vormarsch und sie entwickelt sich ständig weiter. Trotz Krise sind die Solarprojekte vor allem im Bereich der kleineren und mittleren Solarenergieprojekte durch finanzielle Förderungen dank des EEG, Erneuerbare-Energien-Gesetz sowie dem EEWärmeG, Erneuerbaren-Energien-Wäremegesetz weiterhin sehr attraktive Möglichkeiten der Energieversorgung. Die aktuellen Trends der Solarwirtschaft sind online zu verfolgen. Dem Aufwärtstrend entsprechen auch die staatlich verordneten Pflichtauflagen, Wärme aus erneuerbaren Energien zu beziehen. Photovoltaik Technologie ist auch weltweit im Sinne verbesserten Klimaschutzes auf dem Vormarsch. Energie aus Photovoltaikanlagen ist immer preiswerter. Die kontinuierlich sinkenden Preise des Solarstroms tun ihr Übriges, um Verbraucher zu motivieren, auch weiterhin auf die umweltfreundliche Stromgewinnung zu setzen.

 Zur Qualitätssicherung in der Photovoltaik Branche wurde ein Photovoltaik-Anlagenpass vom ZVEH, Zentralverband der Deutschen Elektro- und Informationstechnischen Handwerke entwickelt. Er soll Verbrauchern ermöglichen, hochwertige Qualitätsprodukte zu erhalten. Den Trend, in solare Energie zu investieren, fördert auch die Abwrackprämie veralteter Heizungen. Wer sein veraltetes Heizsystem gegen solar unterstützte Heizsysteme austauscht, bekommt Geld vom Staat dazu.

 Neue Trends in der Photovoltaik Technologie sind auch in den Speichersystemen zu finden. Ein PCM Phase Changing Material konnte entwickelt werden, das es ermöglicht, Sonnenenergie zu speichern. Das Ziel ist, die Sonne des Sommers auszunutzen um sie im Winter zur Verfügung zu haben. Ein erfreulicher Trend, der weiterhin zukunftsweisend Neuerungen bringen wird.