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This is an encyclopedia, with abstracts on zillions of chemicals. Is this the most authoritative book on the planet? No. If you want that, go read Chem Abstracts.
If you want an handy reference which will give you a pointer in the right direction for information on chemicals/drugs/biologics, then this is for you.
Got chloroform in your waste water and wondering how it might have inadvertently developed from miscellaneous stuff dumped down the drain? Wow - acetone + bleach powder catalyzed with sulfuric acid = chloroform, with citations.
Not always the most useful, but definately a good resource.
Boasting of diverse groups of chemicals and pharmaceuticals, it is a success in its own right. There are just plenty to be explored! The book brims with accurate up-to-date information. Pharmacists, Medics, Chemists, Biologists, Physicists, Agriculturists, and many other professionals who work with elements, compounds and mixtures will find this book very useful. It is revised, and is complemented with detailed descriptions, which include molecular formulae, molecular weights, as well as the percentage compositions of constituent chemicals in a compound or mixture.
It is a valuable reference tool.
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I received this book as a gift when I turned -- well, that's not important. What is important is that this turned out to be a nice gift - not roll over laughing funny, but good for a cheerful, smile-provoking gift for friends turning one of the Big O's.
In this thick, but palm-sized paperback, the editors combined more than just a selection of platitudes, but provides a variety of semi-useful bits of information.
"What's so great about turning...." gives sappy reasons why your age - from 1 to 100 - is so good. There are reasons kids think being old is better ("I want to be older so I can make out checks and be a millionaire." John Semple, age seven) ; great things people have said about getting older; parting statements; how old you'd be if you lived on various planets (I personally prefer Mars, where a 50 year old is 27); a list of things life is now to short to do (doing push-ups; wondering if you should have gone to medical school instead); birthdates of several stars (from Mickey Rooney to Maccauley Caulkin) and bunches of other useless but amusing tidbits.
Those not amused by maturing might not find this a good gift, but for office gag gifts and add-ons to more meaningful gifts for that someone going over the hill (from 30 to 50 or so), this is a nice purchase for that "under $10.00" limit.
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This scholarly feminist anthology offers essays on several topics where feminist thinking casts new light on old thinking and writing...As with any anthology, readers are drawn to some topics more than others, but all will be rewarded with well-researched material to aid them in the never-ending task of seeking to be informed feminists.
As someone who struggled to get feminist theology taken seriously in Cambridge in the 1980s, I was delighted to find that this volume contains lectures delivered in a series called "women's voices in theology" which began almost ten years ago, and is clearly still going strong.
This series continues to offer a platform for the wide range of disciplines and interests which cluster under the broad umbrella of feminist theology. As such this volume offers a window into the state of the subject today. It is clear that a lot has happened in the last decade....Extremely illuminating work continues to emerge from the interface between gender studies and both biblical studies and church history.
Feminist theology continues to engage in a competent and often original way with the "high theory" of philosophy and social theory.
Linda Woodhead Lancaster University
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For the last twenty years, Dr. Levin has consistently argued that no non-biological explanation faithfully reproduces the results seen in his experiment. Dr. Levin has shown great insight in regards to the life on Mars issue. As discussed in DiGregorio's book, he suggested to the imaging team that there were other colors on Mars than just dull browns and reds. This was verified by members of the Viking imaging team who confirmed there were blue and green patches on rocks that changed seasonally. Levin argued that the dry conditions and (apparent) low organic content in the Mars soil did not preclude the existence of life. Since the Viking missions, it has been confirmed that certain organisms can live within igneous rock surving on non-organic chemicals for nutrients and on water that trickles through cracks in the rock. Levin argued in a paper on liquid water on Mars that a widely cited paper concluding that liquid water could not exist on the Martian surface was based on a faulty assumption that water vapor was evenly distributed through the Martian atmospheric column. The Pathfinder mission confirmed that water vapor was restricted to the bottom 1 to 3km above the Martian surface.
Another factor that Digregorio discusses in his book is the evidence that there may be active volcanism on Mars. This is important to the life issue since this indicates heat and or hydrothemal systems on the Martian surface. And the National Science Foundation's report on the Mars Sample Return mission admits that such would increase the chance for life on Mars. Recently from Mars Global Surveyor images it has been concluded that Mars lava flows could be as young as 200 thousand years, which would make it virtually certain that volcanism continues today.
In reading over the history of the controversy over the conflicting results from the Vking missions, it occurs to me there is a basic flaw in subsequent investigations to resolve the issue. They all assume there was something wrong with Levin's Labeled Release experiment and the GCMS, which indicated no organics on Mars, was right. DiGregorio discusses the fact that it was first believed there was a problem in the LRx when it gave positive responses. But the engineering team confirmed it was operating properly. In contrast, there was one important factor with the GCMS that was definitely wrong, and two others that possibly were "wrong". As DiGregorio mentions, the Viking GCMS NEVER GOT AN INDICATION THAT SAMPLES WERE ACTUALLY DELIVERED TO THE CHAMBER. This indicates that either there was a flaw in the mechanism detecting sample delivery or the GCMS never got a large enough sample to register. If the second is true then that has clear implications for its failure to detect organics on Mars. Two other failings of the Viking GCMS is that it could be "poisoned" by soil with high sulfur content, known to be true of Mars, and the fact that it could not detect the organic equivalent of fewer than a million cells per gram.
Given these facts you would think that at least some research would have gone into showing how the GCMS could have given a wrong result. Yet all the research (other than Levin's) went to showing why the LRx was wrong. Why? Scientists are a conservative bunch. Rather than making the truly revolutionary claim that life had been discovered on Mars, they simply preferred to make the safe assumption that the instruments indicating life present were flawed. However, the history of science shows that great discoveries are made when scientists with insight go beyond the safe assumptions, and view the evidence dispassionately and go wherever it leads. What should have given scientists pause is the fact that the conclusion that the GCMS was right and the LRx wrong was based not on scientific factors but solely on the assumption that that is the way things should be.
So how can we determine whether it was the LRx or the GCMS that was flawed? A recent paper by Yen, Murray, and Rossman may give a clue: Water content of the Martian soil: Laboratory simulations of reflectance spectra Authors: YEN, A. S.; MURRAY, B. C.; ROSSMAN, G. R. Journal: Journal of Geophysical Research, v. 103, No. E5, p. 11,125 (1998).
This paper shows there is a discepancy between the water content of the Martian soil as determined by the GCMS and determined by all other Earth-based and orbiter observations, perhaps by a factor of 1 to 2 orders of magnitude. The upcoming Mars Polar Lander due to land on Mars in December will test the water content of the Martian soil. If it confirms the high water content of all the observations other than the GCMS, then that would indicate a gross error in the GCMS water analysis and by extension in the organic analysis as well.
Bob Clark
The quest for determining if there is life on Mars has its origins in fundamental research about Earth's environment. Sophisticated scientific experiments were part of the 1976 Viking Mission to Mars. The Viking Lander 1 and Lander 2 were carrying cargo for three biological experiments designed to determine if life forms were found on the surface of Mars, which was the primary objective of the Viking Mission. The Gas Exchange experiment (Gex), the Pyrolytic Release experiment (PR), and the Labeled Release experiment (LR) were selected from the 164 original proposals to develop automated, life-detection experiments to test Martian soil. A fourth test to measure the presence of organicmatter only, the Gas-Chromatograph Mass Spectrophotometer (GCMS) test, was onboard the Viking Mission. This chemical test would discount the findings of the biological tests and play a pivotal role in the conclusions of the existence of life on Mars -- conclusions staunchly defended by NASA.
The first two chapters of DiGregorio's book provide a rather interesting history of the study of Mars. The story traces the planet's role from the ancient religions to the source of intensive scientific scrutiny. Subsequent chapters provide detailed explanations of the scientific research that paved the way for the experiments carried on the Viking Landers. These sections describe not only the scientific research but also the researchers who were engaged in some of the most cutting edge scientific study in microbiology - the study of microbial life in Earth's most extreme, desolate, and hostile environments - searing hot deserts and the frigid ice fields of the Antarctic. This research would pave the way for the development and maturation of anew branch of microbiology examining extremophile bacteria (bacteria that can withstand the extreme environmental conditions of extremely low or extremely high temperatures, excessively salty, or other chemically challenged environments, including cryptoendolithic forms that live inside rocks!).
Wolf Vladimir Vishniac studied algae, molds, and bacteria. His research areas included the origins of life and exobiology (the study of life beyond the boundaries of Earth). Vishniac's development of an in situ test (done in real time -- on the spot), the Wolf Trap, would provide important insights for the concurrent tests by Gilbert V. Levin, whose LR design would be on the Viking Landers. Vishniac and University of Rochester graduate assistant, Stanley Mainzer, developed a series of tests to test for the evidence of microbial life in previously thought sterile ice fields of the Antarctic. It was Vishniac's belief that if life could exist and reproduce in the ice-cemented soils of the Antarctic, life could survive in the harsh environments of Mars.
Vishniac's work also describes the rigors and dangers of such research. On a December summer day in a valley between the Antarctic's Mount Baldr and Mount Thor, Vishniac set to explore a new area to place equipment to continue his studies. Tragically, Vishniac slipped and slid off the edge of a one thousand foot cliff in the Asgard Mountains. The second rigor of research at these levels deals with the acceptance and support of research, especially by NASA and NASA-supported scientists. Vishniac's Wolf Trap and life-testing experimentswere not included in the Viking Landers. The official reason given by NASA for the exclusion was the "weight" of the equipment needed, and that Vishniac's experiments required water, which NASA scientists had already concluded would not be found on Mars.
DiGregorio outlines in the remainder of his book the mounting evidence that Levin's LR experiments did indeed discover life on Mars and how Levin endured the scorn, humiliation, and wrath of the scientific community. The major thrust of the remainder of MARS: THE LIVING PLANET is the decades-long cover up of scientific evidence of life on Mars. DiGregorio describes, in chilling fashion, the role NASA has played in altering, concealing, and distorting data from the Viking Mission. He also describes NASA's attempts to tarnish the careers of research scientists who dare to challenge prevailing NASA thoughts about life on Mars. DiGregorio establishes the premise that NASA has turned its back on settling this incredibly important issue, and then sets forth to answer his own question, "Why?"
MARS: THE LIVING PLANET is, as described on the book's jacket, "a highly readable science story." While some readers might get a little bogged-down in the scientific and technical aspects described in the book's middle chapters, it is this very essence of thoroughness that adds to the compelling story that DiGregorio unfolds. While reading this book, I was compelled to think of three other authors and their subject matter and manner of delivery: Carl Sagan's CONTACT, Kurt Vonnegut's concept of Ice Nine, and Michael Crichton's microbial thriller, ANDROMEDA STRAIN. The difference between these classics and DiGregorio is that Sagan, Vonnegut, and Crichton were writing fiction.