منابع مشابه
Efficient and Environmentally Sound Use of Our Domestic Coal and Natural Gas Resources
There are presently wide disagreements among experts concerning the future availability and price of petroleum and natural gas both domestically and worldwide. If these resources are to be available to future generations at affordable prices, then the technological challenge is to use these resources in ways that offer the greatest economic benefit and the minimum environmental damage. Petroleu...
متن کاملFormation of most of our coal brought Earth close to global glaciation.
The bulk of Earth's coal deposits used as fossil fuel today was formed from plant debris during the late Carboniferous and early Permian periods. The high burial rate of organic carbon correlates with a significant drawdown of atmospheric carbon dioxide (CO2) at that time. A recent analysis of a high-resolution record reveals large orbitally driven variations in atmospheric CO2 concentration be...
متن کاملCoal tars and coal tar pitches.
Numerous studies, mostly case reports, have found that occupational exposure to coal tars or coal-tar pitches (coal-tar distillates) is associated with skin cancer, including scrotal cancer; workers in these studies have included patent-fuel (coal-briquette) workers, pitch loaders, workers in electrical trades, and optical-lens polishers (IARC 1985, 1987). A 1946 study in the United Kingdom fou...
متن کاملOur academy, our mission, our work!
This publication finds me at the half-way point of my tenure as president of the American Academy of Pain Medicine. It is therefore timely to review our academy’s goals and progress, reflecting upon and inspecting our work together as a committed and talented group of management team members and volunteer leaders. To share highlights of the year-to-date, I have created a “virtual interview,” po...
متن کاملOur Problems: Our Solutions
Discussion on the unique characteristics of psychiatry in a non-Western country like India, often tend to be limited to culture-bound syndrome like Koro, possession state etc. It is, no doubt, important for us to be able to recognize these problems and render effective treatment to individuals suffering from them. It is also interesting to speculate on the cultural factors which contribute to t...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1907
ISSN: 0036-8733
DOI: 10.1038/scientificamerican03161907-26082bsupp