Who Or What Is Gaia? Blood Music – the Earth from Myth to Movement
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Cephalobus Litoralis: Biology and Tolerance to Desiccation
Journal of Nematology 20(2):327-329. 1988. © The Society of Nematologists 1988. Cephalobus litorali . Biology and Tolerance to Desiccation M. SAEED, S. A. KHAN, V. A. SAEED, AND H. A. KHAN1 Abstract: Cephalobus litoralis (Akhtar, 1962) Andr~ssy, 1984 reproduced parthenogenetically and completed its life cycle in 72-90 hours. Each female deposited 200-300 eggs. The nematodes showed synchronized movements in the rhythms of the anterior parts of the body. The nematodes were coiled when dried in culture medium or in slowly evaporating water droplets on the tops of culture plates, but in pellets they assumed irregular postures. Nematodes in pellets stored at high humidity could be reactivated after storage for 28 days. Key words: behavior, Cephalobus litoralis, coiling, desiccation tolerance, life cycle, parthenogenesis, synchronized movement. Cephalobus litoralis (Akhtar) Andrfissy, by a modified Baermann funnel method. 1984 was described in 1962 by Akhtar (1) A single gravid female was placed in a cav- as Paracephalobus litoralis based on only two ity slide containing water. After oviposi- female specimens collected from soil tion, a single egg was transferred to a petri around the roots of sugarcane (Saccharum dish containing finely blended pea meal o~cinarum L.) in the agricultural farms of paste (PMP) and water. All experiments the Pakistan Council of Scientific and In- were conducted with nematodes from sin- dustrial Research (PCSIR), Lahore, Paki- gle egg progeny raised in this manner. stan. It had not been reported elsewhere For mass rearing, nematodes were cul- until the authors found it in Karachi. In tured in 14-cm-d petri dishes containing 1967 Andrfissy (3) transferred Eucephalo- pea meal paste. -
Modelling Panspermia in the TRAPPIST-1 System
October 13, 2017 Modelling panspermia in the TRAPPIST-1 system James A. Blake1,2*, David J. Armstrong1,2, Dimitri Veras1,2 Abstract The recent ground-breaking discovery of seven temperate planets within the TRAPPIST-1 system has been hailed as a milestone in the development of exoplanetary science. Centred on an ultra-cool dwarf star, the planets all orbit within a sixth of the distance from Mercury to the Sun. This remarkably compact nature makes the system an ideal testbed for the modelling of rapid lithopanspermia, the idea that micro-organisms can be distributed throughout the Universe via fragments of rock ejected during a meteoric impact event. We perform N-body simulations to investigate the timescale and success-rate of lithopanspermia within TRAPPIST-1. In each simulation, test particles are ejected from one of the three planets thought to lie within the so-called ‘habitable zone’ of the star into a range of allowed orbits, constrained by the ejection velocity and coplanarity of the case in question. The irradiance received by the test particles is tracked throughout the simulation, allowing the overall radiant exposure to be calculated for each one at the close of its journey. A simultaneous in-depth review of space microbiological literature has enabled inferences to be made regarding the potential survivability of lithopanspermia in compact exoplanetary systems. 1Department of Physics, University of Warwick, Coventry, CV4 7AL 2Centre for Exoplanets and Habitability, University of Warwick, Coventry, CV4 7AL *Corresponding author: [email protected] Contents Universe, and can propagate from one location to another. This interpretation owes itself predominantly to the works of William 1 Introduction1 Thompson (Lord Kelvin) and Hermann von Helmholtz in the 1.1 Mechanisms for panspermia...............2 latter half of the 19th Century. -
Hugo Award -- Britannica Online Encyclopedia
10/10/2017 Hugo Award -- Britannica Online Encyclopedia Hugo Award Hugo Award, any of several annual awards presented by the World Science Fiction Society (WSFS). The awards are granted for notable achievement in science �ction or science fantasy. Established in 1953, the Hugo Awards were named in honour of Hugo Gernsback, founder of Amazing Stories, the �rst magazine exclusively for science �ction. Hugo Award. This particular award was given at MidAmeriCon II, in Kansas City, Missouri, on August … Michi Trota Pin, in the form of the rocket on the Hugo Award, that is given to the finalists. Michi Trota Hugo Awards https://www.britannica.com/print/article/1055018 1/10 10/10/2017 Hugo Award -- Britannica Online Encyclopedia year category* title author 1946 novel The Mule Isaac Asimov (awarded in 1996) novella "Animal Farm" George Orwell novelette "First Contact" Murray Leinster short story "Uncommon Sense" Hal Clement 1951 novel Farmer in the Sky Robert A. Heinlein (awarded in 2001) novella "The Man Who Sold the Moon" Robert A. Heinlein novelette "The Little Black Bag" C.M. Kornbluth short story "To Serve Man" Damon Knight 1953 novel The Demolished Man Alfred Bester 1954 novel Fahrenheit 451 Ray Bradbury (awarded in 2004) novella "A Case of Conscience" James Blish novelette "Earthman, Come Home" James Blish short story "The Nine Billion Names of God" Arthur C. Clarke 1955 novel They’d Rather Be Right Mark Clifton and Frank Riley novelette "The Darfsteller" Walter M. Miller, Jr. short story "Allamagoosa" Eric Frank Russell 1956 novel Double Star Robert A. Heinlein novelette "Exploration Team" Murray Leinster short story "The Star" Arthur C. -
Complete Dissertation
VU Research Portal Common Genomes Deibel, F.H.J. 2009 document version Publisher's PDF, also known as Version of record Link to publication in VU Research Portal citation for published version (APA) Deibel, F. H. J. (2009). Common Genomes: on open source in biology & critical theory beyond the patent. Vrije Universiteit. General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. E-mail address: [email protected] Download date: 04. Oct. 2021 Common Genomes on open source in biology & critical theory beyond the patent AMSTERDAM: At the request of Critical Technology Construction ; Department of Social Sciences, Wageningen University & the Athena Institute for research on innovation, communication in health and life sciences; Vrije Universiteit Amsterdam – MMIX Common Genomes: on open source in biology & critical theory beyond the patent Copyleft 2009 by Eric Deibel. Some rights reserved. This work is licensed under a Creative Commons license: “attribution-noncommercial-share alike 3.0 Netherlands”. -
THE MENTOR 77, January 1993
THE MENTOR Australian Science Fiction CONTENTS #77 - COLUMNISTS: 9 - FANTASY DOWNUNDER by Bill Congreve 22 - WARRIORS OF ANCIENT WORLDS by Andrew Darlington 36 - ARGENTINE SF HISTORY 2 by Claudio Omar Noguerol 44 - OUT OF OZ by Ron Clarke COMIC SECTION: 47 - FERAL KILLERS by Carter & Carcinogen FICTION: 2 - OBUNAGA'S FINGER by Mustafa Zahirovic 15 - GODDESS OF STONE by Sean Williams 31 - THE SALE OF YOUTH by George Ivanoff DEPARTMENTS: 56 - THE R&R DEPT. - Reader's Letters. 75 - REVIEWS by Ron Clarke Front Cover Art by Peggy Ranson. Interior Illos: Peggy Ranson p. 8, 21, 30, 74 Jozef Szekeres p. 14, 55. Kerrie Hanlon p.1 THE MENTOR 77, January 1993. ISSN 0727-8462. Edited, printed and published by Ron Clarke, 6 Bellevue Road, Faulconbridge, NSW 2776, Australia. THE MENTOR is published at intervals of roughly three months. It is available for published contribution (fiction [science fiction or fantasy]), poetry, article, trade ( not with an APAzine), or substantial letter of comment on a previous issue. It is not available for subscription, but is available for $5 for a sample issue (posted) Contributions may be on an IBM ascii file or a known-brand world processor on disc or typed, single or double-spaced, preferably a good photocopy (and if you want it returned, please send a Stamped, Self Addressed Envelope of the appropriate size)! Contributions are not paid; THE MENTOR 77 page 1 however they receive a free copy of the issue their contribution is in, and any future issue containing comments on their contribution. Contents (C) Copyright 1992 for the Contributors THE MENTOR 77 page 2 OBUNAGA'S FINGER by Mustafa Zahirovic The first breath of life is the best breath. -
Advances in Understanding of Desiccation Tolerance of Lichens and Lichen-Forming Algae
plants Review Advances in Understanding of Desiccation Tolerance of Lichens and Lichen-Forming Algae Francisco Gasulla *, Eva M del Campo, Leonardo M. Casano and Alfredo Guéra * Department of Life Sciences, Universidad de Alcalá, Alcalá de Henares, 28802 Madrid, Spain; [email protected] (E.M.d.C.); [email protected] (L.M.C.) * Correspondence: [email protected] (F.G.); [email protected] (A.G.) Abstract: Lichens are symbiotic associations (holobionts) established between fungi (mycobionts) and certain groups of cyanobacteria or unicellular green algae (photobionts). This symbiotic association has been essential in the colonization of terrestrial dry habitats. Lichens possess key mechanisms involved in desiccation tolerance (DT) that are constitutively present such as high amounts of polyols, LEA proteins, HSPs, a powerful antioxidant system, thylakoidal oligogalactolipids, etc. This strategy allows them to be always ready to survive drastic changes in their water content. However, several studies indicate that at least some protective mechanisms require a minimal time to be induced, such as the induction of the antioxidant system, the activation of non-photochemical quenching including the de-epoxidation of violaxanthin to zeaxanthin, lipid membrane remodeling, changes in the proportions of polyols, ultrastructural changes, marked polysaccharide remodeling of the cell wall, etc. Although DT in lichens is achieved mainly through constitutive mechanisms, the induction of protection mechanisms might allow them to face desiccation stress in a better condition. The proportion and relevance of constitutive and inducible DT mechanisms seem to be related to the ecology at which lichens are adapted to. Citation: Gasulla, F.; del Campo, E.M; Casano, L.M.; Guéra, A. -
Evolutionary Processes Transpiring in the Stages of Lithopanspermia Ian Von Hegner
Evolutionary processes transpiring in the stages of lithopanspermia Ian von Hegner To cite this version: Ian von Hegner. Evolutionary processes transpiring in the stages of lithopanspermia. 2020. hal- 02548882v2 HAL Id: hal-02548882 https://hal.archives-ouvertes.fr/hal-02548882v2 Preprint submitted on 5 Aug 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. HAL archives-ouvertes.fr | CCSD, April 2020. Evolutionary processes transpiring in the stages of lithopanspermia Ian von Hegner Aarhus University Abstract Lithopanspermia is a theory proposing a natural exchange of organisms between solar system bodies as a result of asteroidal or cometary impactors. Research has examined not only the physics of the stages themselves but also the survival probabilities for life in each stage. However, although life is the primary factor of interest in lithopanspermia, this life is mainly treated as a passive cargo. Life, however, does not merely passively receive an onslaught of stress from surroundings; instead, it reacts. Thus, planetary ejection, interplanetary transport, and planetary entry are only the first three factors in the equation. The other factors are the quality, quantity, and evolutionary strategy of the transported organisms. -
A Comparison of the Dinosaur Communities from the Middle
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 31 July 2018 doi:10.20944/preprints201807.0610.v1 Peer-reviewed version available at Geosciences 2018, 8, 327; doi:10.3390/geosciences8090327 1 Review 2 A comparison of the dinosaur communities from 3 the Middle Jurassic of the Cleveland (Yorkshire) 4 and Hebrides (Skye) basins, based on their ichnites 5 6 Mike Romano 1*, Neil D. L. Clark 2 and Stephen L. Brusatte 3 7 1 Independent Researcher, 14 Green Lane, Dronfield, Sheffield S18 2LZ, England, United Kingdom; 8 [email protected] 9 2 Curator of Palaeontology, The Hunterian, University of Glasgow, University Avenue, Glasgow 10 G12 8QQ, Scotland, United Kingdom; [email protected] 11 3 Chancellor's Fellow in Vertebrate Palaeontology, School of Geosciences, University of Edinburgh, 12 Grant Institute, The King's Buildings, James Hutton Road, Edinburgh EH9 3FE, Scotland, United Kingdom; 13 [email protected] 14 * Correspondence: [email protected]; Tel.: 01246 417330 15 16 Abstract: 17 Despite the Hebrides and Cleveland basins being geographically close, research has not 18 previously been carried out to determine faunal similarities and assess the possibility of links 19 between the dinosaur populations. The palaeogeography of both areas during the Middle Jurassic 20 shows that there were no elevated landmasses being eroded to produce conglomeratic material in 21 the basins at that time. The low-lying landscape and connected shorelines may have provided 22 connectivity between the two dinosaur populations. 23 The dinosaur fauna of the Hebrides and Cleveland basins has been assessed based primarily 24 on the abundant ichnites found in both areas as well as their skeletal remains. -
Effect of Relative Humidity on Respiration and Metabolism in the Moss Physcomitrella Patens
University of South Dakota USD RED Honors Thesis Theses, Dissertations, and Student Projects Spring 2018 Effect of Relative Humidity on Respiration and Metabolism in the Moss Physcomitrella Patens Cami Brenner University of South Dakota Follow this and additional works at: https://red.library.usd.edu/honors-thesis Recommended Citation Brenner, Cami, "Effect of Relative Humidity on Respiration and Metabolism in the Moss Physcomitrella Patens" (2018). Honors Thesis. 9. https://red.library.usd.edu/honors-thesis/9 This Honors Thesis is brought to you for free and open access by the Theses, Dissertations, and Student Projects at USD RED. It has been accepted for inclusion in Honors Thesis by an authorized administrator of USD RED. For more information, please contact [email protected]. EFFECT OF RELATIVE HUMIDITY ON RESPIRATION AND METABOLISM IN THE MOSS PHYSCOMITRELLA PATENS by Cami Brenner A Thesis Submitted in Partial Fulfillment Of the Requirements for the University Honors Program Department of Biology The University of South Dakota May 2018 The members of the honors Thesis Committee appointed to examine the thesis of Cami Brenner find it satisfactory and recommend it be accepted. Dr. Karen L. Koster Professor of Biology Director of the Committee Dr. Bernard M.W Wone Assistant Professor of Biology Dr. David Swanson Professor of Biology ABSTRACT Effect of Relative Humidity on Respiration and Metabolism in the Moss Physcomitrella Patens Cami Brenner Director: Dr. Karen L. Koster, Ph.D. The goal of this research was to test the effect of relative humidity on respiration and metabolism in the moss species Physcomitrella patens. Although this moss does not usually survive rapid desiccation, tolerance of extreme water loss can be induced by very slow drying and acclimation for 6-10 days at high relative humidity (RH). -
The Mutual Influence of Science Fiction and Innovation
Nesta Working Paper No. 13/07 Better Made Up: The Mutual Influence of Science fiction and Innovation Caroline Bassett Ed Steinmueller George Voss Better Made Up: The Mutual Influence of Science fiction and Innovation Caroline Bassett Ed Steinmueller George Voss Reader in Digital Media, Professor of Information and Research Fellow, Faculty of Arts, Research Centre for Material Technology, SPRU, University University of Brighton, Visiting Digital Culture, School of of Communication Sussex Fellow at SPRU, University of Media, Film and Music, Sussex University of Sussex Nesta Working Paper 13/07 March 2013 www.nesta.org.uk/wp13-07 Abstract This report examines the relationship between SF and innovation, defined as one of mutual engagement and even co-constitution. It develops a framework for tracing the relationships between real world science and technology and innovation and science fiction/speculative fiction involving processes of transformation, central to which are questions of influence, persuasion, and desire. This is contrasted with the more commonplace assumption of direct linear transmission, SF providing the inventive seed for innovation– instances of which are the exception rather than the rule. The model of influence is developed through an investigation of the nature and evolution of genre, the various effects/appeals of different forms of expression, and the ways in which SF may be appropriated by its various audiences. This is undertaken (i) via an inter- disciplinary survey of work on SF, and a consideration the historical construction of genre and its on-going importance, (ii) through the development of a prototype database exploring transformational paths, and via more elaborated loops extracted from the database, and (iii) via experiments with the development of a web crawl tool, to understand at a different scale, using tools of digital humanities, how fictional ideas travel. -
Cell Structure and Function in the Bacteria and Archaea
4 Chapter Preview and Key Concepts 4.1 1.1 DiversityThe Beginnings among theof Microbiology Bacteria and Archaea 1.1. •The BacteriaThe are discovery classified of microorganismsinto several Cell Structure wasmajor dependent phyla. on observations made with 2. theThe microscope Archaea are currently classified into two 2. •major phyla.The emergence of experimental 4.2 Cellscience Shapes provided and Arrangements a means to test long held and Function beliefs and resolve controversies 3. Many bacterial cells have a rod, spherical, or 3. MicroInquiryspiral shape and1: Experimentation are organized into and a specific Scientificellular c arrangement. Inquiry in the Bacteria 4.31.2 AnMicroorganisms Overview to Bacterialand Disease and Transmission Archaeal 4.Cell • StructureEarly epidemiology studies suggested how diseases could be spread and 4. Bacterial and archaeal cells are organized at be controlled the cellular and molecular levels. 5. • Resistance to a disease can come and Archaea 4.4 External Cell Structures from exposure to and recovery from a mild 5.form Pili allowof (or cells a very to attach similar) to surfacesdisease or other cells. 1.3 The Classical Golden Age of Microbiology 6. Flagella provide motility. Our planet has always been in the “Age of Bacteria,” ever since the first 6. (1854-1914) 7. A glycocalyx protects against desiccation, fossils—bacteria of course—were entombed in rocks more than 3 billion 7. • The germ theory was based on the attaches cells to surfaces, and helps observations that different microorganisms years ago. On any possible, reasonable criterion, bacteria are—and always pathogens evade the immune system. have been—the dominant forms of life on Earth. -
Susceptibility to Desiccation and Soil Factors Affecting the Survival of Rhizobium Japonicum Strains Radhi Kathum Al-Rashidi Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1978 Susceptibility to desiccation and soil factors affecting the survival of Rhizobium japonicum strains Radhi Kathum Al-Rashidi Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Agricultural Science Commons, Agriculture Commons, and the Agronomy and Crop Sciences Commons Recommended Citation Al-Rashidi, Radhi Kathum, "Susceptibility to desiccation and soil factors affecting the survival of Rhizobium japonicum strains " (1978). Retrospective Theses and Dissertations. 6365. https://lib.dr.iastate.edu/rtd/6365 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. INFORMATION TO USERS This was produced from a copy of a document sent to us for microfilming. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help you understand markings or notations which may appear on this reproduction. 1. The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure you of complete continuity.