Download or read book Bibliography of Technical Reports written by Woods Hole Oceanographic Institution and published by . This book was released on 1992 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Isotope Geochemistry of Abyssal Peridotites and Related Rocks written by Jonathan E. Snow and published by . This book was released on 1993 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation studies several aspects of the formation of the Earth's oceanic mantle and crust, using a variety of geologic techniques, principally major elements, radiogenic isotopes and trace elements, but including petrography, mineral chemistry, x-ray diffraction, seafloor geomorphology, and analysis of the tectonics of fracture zones. The first chapter is an introduction to the problems to be addressed in this work. The second chapter examines the composition of basalts erupted near the Atlantis II Fracture Zone on the Southwest Indian Ridge. Trends in major element compositions of those basalts can be related directly to the nearby presence of the fracture zone. The effects of mantle composition and crustal level lateral transport of magma in the rift system can be ruled out by the analysis of isotopes and the geomorphology of the fracture zone floor. This is the best demonstration to date of a transform fault effect on basalt compositions. In trying to quantify putative transform fault effects documented at other fracture zones, no systematic correlation of transform offset age with mantle temperature change can be found, suggesting that mantle composition and lateral transport phenomena play a larger than expected role in the evolution of those areas. The third chapter relates to oceanic mantle rocks as they are altered at or near the Earth's surface. The major elements which make up abyssal peridotites are extensively redistributed by the alteration they have undergone. Mg is shown to be extracted from the peridotites, and a variety of trace elements added. This elemental redistribution is taken as evidence for extensive Mg transport by circulating waters. Since the solubility of Mg-bearing minerals in hydrothermal solutions is quite limited, much lower temperatures and much higher water /rock ratios are required to explain the major element compositions of the peridotites than had previously been assumed. The behavior of the Nd, Sr and Os isotopic systems during seafloor alteration was also studied. The isotope systematics of these rocks strongly support the hypothesis of high water /rock ratios in the formation of serpentinized abyssal peridotites. Nonetheless, Nd and Sr reside in a phase which is resistant to alteration (clinopyroxene) and the concentration of Os is high relative to that of seawater, so that it too appears resistant to alteration. Primary mantle isotopic signatures may be obtained from abyssal peridotites by careful analysis, even of extremely weathered rocks. Radiogenic strontium in excess of what could be introduced by seawater contamination or in situ radiogenic growth in a reasonable period of time was also found. These observations confirm earlier work which had been discredited for many years. The only plausible mechanism for the formation of this "orphan" S7Sr is that it is introduced as part of a sedimentary component which infiltrates the rock during metamorphism and/ or weathering. The 87Sr may be contained by or sorbed onto extremely fine clay particulates, or colloidal suspensions, as opposed to the dissolved ionic Sr which is normally thought of as characterizing the Sr isotopic composition of seawater. The high water/rock ratios required by the bulk isotopic analysis, as well as the pervasive elemental redistribution arguing for extensive near-surface weathering at high water /rock ra.tios strongly support this hypothesis. Given pervasive percolation of water throughout the samples, sufficient radiogenic, sediment-derived strontium may be drawn deep into the crust in the course of its weathering to cause such high B7SrfB6Sr ratios. The fourth chapter deals exclusively with primary mantle isotopic information from abyssal peridotites. This is the first study which has attempted to relate the Os isotopic system in the oceanic mantle to other isotopic systems and to trace elements. It is possible, with some extreme assumptions, to model the range of Os isotopes in the oceanic mantle alone in a standard model of formation of the depleted mantle by extraction of the crust. The additional constraints provided by the study of Nd isotopes in depleted mantle rocks from the oceans show that partial melt extraction and the formation of a depleted reservoir alone are not sufficient to account for the range of both N d and Os isotopes in the Earth's mantle. Possible mechanisms for the decoupling of the Os and Nd isotopic systems include elemental fractionation via the porous flow of basalt through the mantle, mantle metasomatism, recycling of a subducted component in the mantle and core formation. The core extraction model is pursued in some detail. Such core extraction models can account for the distributions and isotopic compositions of compatible and incompatible trace elements in the Earth's mantle, but they are highly non-unique, and thus difficult to test

Download or read book Abstracts 20th Annual Meetings February 2 March 1 1991 written by and published by . This book was released on 1991 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the National Cancer Institute written by and published by . This book was released on 2001-04 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abstracts 20th Annual Meetings October 3 7 1991 written by and published by . This book was released on 1991 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Author s Handbook of Styles for Life Science Journals written by Michel Atlas and published by CRC Press. This book was released on 1995-11-08 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let the Author's Handbook of Styles for Life Science Journals save you time and trouble by providing a one-stop resource for all your manuscript writing requirements. No more plowing through your journal collection or wandering the library stacks to get those elusive journal pages containing instructions to authors. This unique book contains all the information you need to know: whether the journal will consider your manuscript; the journal's submission address; how to construct the abstract, illustrations, tables, and references; and specific information on copyright, multiple authorship, statistical analyses, and page charges. The Author's Handbook of Styles for Life Science Journals gives all this information for 440 of the most important English-language, life science journals. Titles were selected from the "Journal Rankings by Times Cited" list in the Science Citation Index Journal Citation Report. Because this report is heavily weighted toward the medical sciences, other life science journals are incorporated into the book based on general level of prestige and reputation. In addition, some new titles that promise to be important to their fields, like Nature Medicine and Emerging Infectious Diseases are also included. Organized by journal title, the handbook's entries are uniformly arranged to allow direct comparison between journals. Information is presented in an easy-to-use, easy-to-read format with clear and explicitly stated instructions. The Author's Handbook of Styles for Life Science Journals gives authors in the life sciences all the information necessary for the correct and complete compilation of a manuscript for submission to their journal of choice.

Download or read book How to Practice Academic Medicine and Publish from Developing Countries written by Samiran Nundy and published by Springer Nature. This book was released on 2021-10-23 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an open access book. The book provides an overview of the state of research in developing countries – Africa, Latin America, and Asia (especially India) and why research and publications are important in these regions. It addresses budding but struggling academics in low and middle-income countries. It is written mainly by senior colleagues who have experienced and recognized the challenges with design, documentation, and publication of health research in the developing world. The book includes short chapters providing insight into planning research at the undergraduate or postgraduate level, issues related to research ethics, and conduct of clinical trials. It also serves as a guide towards establishing a research question and research methodology. It covers important concepts such as writing a paper, the submission process, dealing with rejection and revisions, and covers additional topics such as planning lectures and presentations. The book will be useful for graduates, postgraduates, teachers as well as physicians and practitioners all over the developing world who are interested in academic medicine and wish to do medical research.

Download or read book Journal of Rehabilitation R D written by and published by . This book was released on 2000 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Rehabilitation Research Development written by and published by . This book was released on 2000 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cumulated Index Medicus written by and published by . This book was released on 1992 with total page 1384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Rehabilitation Research and Development written by and published by . This book was released on 1999 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Editorial Peer Review written by Ann C. Weller and published by Information Today, Inc.. This book was released on 2001 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to provide an in-depth analysis of the peer review process in scholarly publishing. Author Weller offers a systematic review of published studies of editorial peer review in the following broad categories: general studies of rejection rates, studies of editors, studies of authors, and studies of reviewers. The book concludes with an examination of new models of editorial peer review intended to enhance the scientific communication process as it moves from a print to an electronic environment.

Download or read book Protein Peptide Letters written by and published by . This book was released on 1996-04 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Protein Peptide Letters written by and published by . This book was released on 1995-12 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Medical Communication written by Scott A. Mogull and published by Routledge. This book was released on 2017-09-01 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific and Medical Communication: A Guide for Effective Practice prepares readers to effectively communicate in professional scientific communities. The material in this book is firmly grounded in more than 500 published research findings and editorials by scientific writers, authors, and journal editors. Thus, this text provides the broadest and most comprehensive analysis of scientific writing. In addition, carefully selected and thoroughly annotated examples from the scientific and medical literature demonstrate the recommendations covered in the text. These real-world examples were carefully selected so that the scientific content can be understood by those without a detailed background in any particular scientific or medical field—thus clearly illustrating the content organization and writing style. This text will prepare individuals to write and edit scientific manuscripts, conference abstracts, posters, and press releases according to journal and professional standards. Readers will also learn to conduct effective searches of the scientific and medical literature, as well as proper citation practices.

Download or read book Protein Peptide Letters written by and published by . This book was released on 1996-12 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: