Proceedings of the 1990 Billings Land Reclamation Symposium On
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A 1 Case-PR/ }*Rciofft.;Is Report
.A 1 case-PR/ }*rciofft.;is Report (a) This eruption site on Mauna Loa Volcano was the main source of the voluminous lavas that flowed two- thirds of the distance to the town of Hilo (20 km). In the interior of the lava fountains, the white-orange color indicates maximum temperatures of about 1120°C; deeper orange in both the fountains and flows reflects decreasing temperatures (<1100°C) at edges and the surface. (b) High winds swept the exposed ridges, and the filter cannister was changed in the shelter of a p^hoehoc (lava) ridge to protect the sample from gas contamination. (c) Because of the high temperatures and acid gases, special clothing and equipment was necessary to protect the eyes. nose, lungs, and skin. Safety features included military flight suits of nonflammable fabric, fuil-face respirators that are equipped with dual acidic gas filters (purple attachments), hard hats, heavy, thick-soled boots, and protective gloves. We used portable radios to keep in touch with the Hawaii Volcano Observatory, where the area's seismic activity was monitored continuously. (d) Spatter activity in the Pu'u O Vent during the January 1984 eruption of Kilauea Volcano. Magma visible in the circular conduit oscillated in a piston-like fashion; spatter was ejected to heights of 1 to 10 m. During this activity, we sampled gases continuously for 5 hours at the west edge. Cover photo: This aerial view of Kilauea Volcano was taken in April 1984 during overflights to collect gas samples from the plume. The bluish portion of the gas plume contained a far higher density of fine-grained scoria (ash). -
Iowa State Journal of Research 61.2
oufiiil of Research Volume 61, No. 2 ISSN0092-6345 November, 1986 ISJRA6 61(2) 153-296 1986 From the Editors . 153 ISELY, D. Leguminosae of the United States. Astragalus L.: IV. Species Summary N-Z.. 157 Book Reviews . 291 IOWA STATE JOURNAL OF RESEARCH Published under the auspices of the Vice President for Research, Iowa State University EDITOR .................................................. DUANE ISELY ASSOCIATE EDITOR .............................. KENNETH G. MADISON ASSOCIATE EDITOR ...................................... PAUL N. HINZ ASSOCIATE EDITOR . BRUCE W. MENZEL ASSOCIATE EDITOR ................................... RAND D. CONGER COMPOSITOR-ASSISTANT EDITOR ............... CHRISTINE V. McDANIEL Administrative Board N. L. Jacobson, Chairman J. E. Galejs, I. S. U. Library D. Isely, Editor W. H. Kelly, College of Sciences and Humanities W. R. Madden, Office of Business and Finance J. P. Mahlstede, Agriculture and Horne Economics Experiment Station W. M. Schmitt, Information Service G. K. Serovy, College of Engineering Editorial Board G. J. Musick, Associate Editor for Entomology, University of Arkansas Paul W. Unger, Associate Editor for Agronomy, USDA, Bushland, Texas Dwight W. Bensend, Associate Editor for Forestry, Hale, Missouri L. Glenn Smith, Associate Editor for Education, Northern Illinois Univ. Faye S. Yates, Promotion Specialist, I. S. U. Gerald Klonglan, Consultant for Sociology, I. S. U. All matters pertaining to subscriptions, remittances, etc. should be addressed to the Iowa State University Press, 2121 South State Avenue, Ames, Iowa 50010. Most back issues of the IOWA STATE JOURNAL OF RESEARCH are available. Single copies starting with Volume 55 are $7.50 each, plus postage. Prior issues are $4.50 each, plus postage. Because of limited stocks, payment is required prior to shipment. -
Ventura County Plant Species of Local Concern
Checklist of Ventura County Rare Plants (Twenty-second Edition) CNPS, Rare Plant Program David L. Magney Checklist of Ventura County Rare Plants1 By David L. Magney California Native Plant Society, Rare Plant Program, Locally Rare Project Updated 4 January 2017 Ventura County is located in southern California, USA, along the east edge of the Pacific Ocean. The coastal portion occurs along the south and southwestern quarter of the County. Ventura County is bounded by Santa Barbara County on the west, Kern County on the north, Los Angeles County on the east, and the Pacific Ocean generally on the south (Figure 1, General Location Map of Ventura County). Ventura County extends north to 34.9014ºN latitude at the northwest corner of the County. The County extends westward at Rincon Creek to 119.47991ºW longitude, and eastward to 118.63233ºW longitude at the west end of the San Fernando Valley just north of Chatsworth Reservoir. The mainland portion of the County reaches southward to 34.04567ºN latitude between Solromar and Sequit Point west of Malibu. When including Anacapa and San Nicolas Islands, the southernmost extent of the County occurs at 33.21ºN latitude and the westernmost extent at 119.58ºW longitude, on the south side and west sides of San Nicolas Island, respectively. Ventura County occupies 480,996 hectares [ha] (1,188,562 acres [ac]) or 4,810 square kilometers [sq. km] (1,857 sq. miles [mi]), which includes Anacapa and San Nicolas Islands. The mainland portion of the county is 474,852 ha (1,173,380 ac), or 4,748 sq. -
Ventura County Planning Division 2018 Locally Important Plant List
Ventura County Planning Division 2018 Locally Important Plant List Number of Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source Ventura County Abronia turbinata Torr. ex S. Consortium of California Turbinate Sand-verbena A/PH Nyctaginaceae 2 Watson Herbaria Acanthoscyphus parishii var. abramsii (E.A. McGregor) Consortium of California Abrams' Oxytheca AH Polygonaceae CRPR 1B.2 4-5 Reveal [synonym: Oxytheca Herbaria parishii var. abramsii] Acanthoscyphus parishii Consortium of California Parish Oxytheca AH Polygonaceae CRPR 4.2 1 (Parry) Small var. parishii Herbaria Acmispon glaber var. Consortium of California brevialatus (Ottley) Brouillet Short Deerweed PH Fabaceae 1 Herbaria Acmispon heermannii Heermann Lotus or Consortium of California (Durand & Hilg.) Brouillet var. PH Fabaceae 4 Hosackia Herbaria heermannii Acmispon heermannii var. Roundleaf Heermann Consortium of California PH Fabaceae 1 orbicularis (A. Gray) Brouillet Lotus or Hosackia Herbaria Acmispon junceus (Bentham) Consortium of California Rush Hosackia AH Fabaceae 2 Brouillet var. junceus Herbaria 1 Locally Important Plant List- Dec. 2018 Number of Scientific Name Common Name Habit Family Federal/State Status Occurrences in Source Ventura County Acmispon micranthus (Torrey Consortium of California Grab Hosackia or Lotus AH Fabaceae 3 & A. Gray) Brouillet Herbaria Acmispon parviflorus Consortium of California Tiny Lotus AH Fabaceae 2 (Bentham) D.D. Sokoloff Herbaria Consortium of California Agrostis hallii Vasey Hall's Bentgrass PG Poaceae 1 Herbaria Common or Broadleaf Consortium of California Alisma plantago-aquaticum L. PH Alismataceae 4 Water-plantain Herbaria Consortium of California Allium amplectens Torrey Narrowleaf Onion PG Alliaceae 1 Herbaria Allium denticulatum (Traub) Consortium of California Dentate Fringed Onion PG Alliaceae 1 D. -
Calculations of \(N,2N\) Reaction Cross Sections for 74,76,78,80,82Se up to 20
128 EPJ Web of Conferences , 01001 (2016) DOI: 10.1051/epjconf/201612801001 TESNAT 2016 Halide Şahan1,a, Muhittin Şahan1, Eyyup Tel1 1Osmaniye Korkut Ata University, Faculty of Arts and Science, Department of Physics, Osmaniye, Turkey In the present work, the excitation functions of (n,2n) reactions for five isotopes of selenium (74,76,78,80,82Se) are calculated using ALICE/ASH, EMPIRE-3.2.2, PCROSS, and TALYS 1.6 computer codes based on statistical model up to 20 MeV. The theoretical calculations provide information of the (n,2n) excitation functions with the increasing target neutron number of selenium element. The calculated cross-sections were compared with experimental data from EXFOR and also with the cross- sections estimated with semi empirical formula developed by Tet et al. (2008) [18]. Results show a reasonably good agreement between the calculations and the experimental data from literature. ! " by Tel et al. [13]. These formulas have been given as follows; The theoretical calculation models are necessary to ⎪⎧7.15[]1− 2.45e−31.620(N −Z ) / A for even A⎪⎫ provide the estimation of the particle–induced reaction σ = (1) ln n,2n ⎨ ⎬ cross sections due to the experimental difficulty [1,2]. In ⎩⎪ 7.65[]1−1.59e−23.06(N −Z ) / A for odd A⎭⎪ past years the cross section of selenium isotopes (74,76,78,80,82,84Se) around 14-15 MeV have been measured For (n,2n) reaction cross sections of 74Se(n,2n)73Se, by many researches such as Hille and Münzer [3]; 76Se(n,2n)75Se, 78Se(n,2n)77Se, 80Se(n,2n)79Se and Minetti and Pasquarelli [4]; Casanova and Sanchez [5]; 82Se(n,2n)81Se at 14-15 MeV, the calculated cross 74,76,78,80,82 Hoang et al. -
AN43285 – Accurate Determination of Arsenic and Selenium in Environmental Samples Using Triple Quadrupole ICP-MS
Certified for Thermo Scientific™ iCAP™ TQe ICP-MS APPLICATION NOTE 43285 Accurate determination of arsenic and selenium in environmental samples using triple quadrupole ICP-MS Authors: Marcus Manecki1, Simon Lofthouse2, Philipp Boening3 and Shona McSheehy Ducos1; 1Thermo Fisher Scientific, Bremen, Germany; 2Thermo Fisher Scientific, Hemel Hempstead, UK; 3Institute of Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University of Oldenburg, Oldenburg, Germany Keywords: Arsenic, interference removal, Selenium for example is an essential element that is REE, rock, selenium, soil, sediment necessary for normal thyroid function and due to its antioxidant properties, is associated with several health Goal benefits. Diseases associated with selenium deficiency To demonstrate the accurate determination of arsenic such as Keshan disease and symptoms of hypothyroidism, and selenium in sediments and rocks that contain elevated are most commonly found in areas where levels of levels of rare earth elements using triple quadrupole selenium in soil are particularly low. Supplementation as a ICP-MS. remedy is common practice and is not isolated to humans. Understanding where soil selenium deficiencies occur for Introduction example supports the correct supplementation of cattle Due to the impact arsenic and selenium can have in the grazing in those areas to prevent white muscle disease environment at low levels, as a toxin or essential nutrient (a cattle specific selenium deficiency disease). respectively, it is important to be able to quantify them accurately. Arsenic on the other hand, in its inorganic forms Instrumentation (the most common forms found in ground water and soils) An iCAP TQ ICP-MS was used to analyse all samples. -
Hyperfine Structure in Selenium, Palladium and Gold.* by L
HYPERFINE STRUCTURE IN SELENIUM, PALLADIUM AND GOLD.* BY L. SIBAZ~A. (From the Dcpa,'tment of Physics, CeJ~tral College, Balzgarore.) Received September 10, 1935. Selenium (At. no. 34; At. wt. 79.2). l'oI~ purposes of classification of selenium spectra, the arc arid spark lines of seleniunl have been mostly excited in tubes of various types with con- (lensed or uncondensed electrical discharge through selenium vapour or between alumiuium poles tipped with metallic selenium. A selenium arc either in vacuum or iu an atmosphere of nitrogen has aIso been employed. Such sources however are not suited for hyperfine structure work, as the lines obtained are broad and diffuse. Moreover most of the prominent are lines of selenium lie either in the near infra-red or in the extreme ultra-violet, thus rendering their analysis by high resolving power apparatus specially difficult. Some intense spark lines of selenium 1% in the visible region; lmt under the conditions employed for their emission in discharge tubes, the broadening of the lines renders such sources unsuitable for hyperfine structure study. The apparatus used, the essential part of ~-hich is a water- cooled hollow cathode, is the same as that employed by 2Prof. Venkatesaehar and the author in their investigation on the isotopic constitution of platinum, x The selenium powcler took the place of the platinum foil in the tubular space of the cathode (P1. XV, Fig. 1). For experimental details the above paper -,,~+ he consulted. Of the seventeen lines of selenium here examined, only two are are lines and the remaining fifteen belong to the first spark spectrum of selenium. -
Detection of Elements at All Three R-Process Peaks in the Metal-Poor Star HD 160617
Published in the Astrophysical Journal A Preprint typeset using LTEX style emulateapj v. 5/2/11 DETECTION OF ELEMENTS AT ALL THREE R-PROCESS PEAKS IN THE METAL-POOR STAR HD 1606171 ,2 ,3 Ian U. Roederer4 and James E. Lawler5 Published in the Astrophysical Journal ABSTRACT We report the first detection of elements at all three r-process peaks in the metal-poor halo star HD 160617. These elements include arsenic and selenium, which have not been detected previously in halo stars, and the elements tellurium, osmium, iridium, and platinum, which have been detected previously. Absorption lines of these elements are found in archive observations made with the Space Telescope Imaging Spectrograph onboard the Hubble Space Telescope. We present up-to-date absolute atomic transition probabilities and complete line component patterns for these elements. Additional archival spectra of this star from several ground-based instruments allow us to derive abundances or upper limits of 45 elements in HD 160617, including 27 elements produced by neutron-capture reactions. The average abundances of the elements at the three r-process peaks are similar to the predicted solar system r-process residuals when scaled to the abundances in the rare earth element domain. This result for arsenic and selenium may be surprising in light of predictions that the production of the lightest r-process elements generally should be decoupled from the heavier r-process elements. Subject headings: atomic data — nuclear reactions, nucleosynthesis, abundances — stars: abundances — stars: individual (HD 160617) — stars: Population II 1. INTRODUCTION in greater abundance during n-capture reactions. The Understanding the origin of the elements is one of the s-process path closely follows the valley of β-stability, major challenges of modern astrophysics. -
A Checklist of Vascular Plants Endemic to California
Humboldt State University Digital Commons @ Humboldt State University Botanical Studies Open Educational Resources and Data 3-2020 A Checklist of Vascular Plants Endemic to California James P. Smith Jr Humboldt State University, [email protected] Follow this and additional works at: https://digitalcommons.humboldt.edu/botany_jps Part of the Botany Commons Recommended Citation Smith, James P. Jr, "A Checklist of Vascular Plants Endemic to California" (2020). Botanical Studies. 42. https://digitalcommons.humboldt.edu/botany_jps/42 This Flora of California is brought to you for free and open access by the Open Educational Resources and Data at Digital Commons @ Humboldt State University. It has been accepted for inclusion in Botanical Studies by an authorized administrator of Digital Commons @ Humboldt State University. For more information, please contact [email protected]. A LIST OF THE VASCULAR PLANTS ENDEMIC TO CALIFORNIA Compiled By James P. Smith, Jr. Professor Emeritus of Botany Department of Biological Sciences Humboldt State University Arcata, California 13 February 2020 CONTENTS Willis Jepson (1923-1925) recognized that the assemblage of plants that characterized our flora excludes the desert province of southwest California Introduction. 1 and extends beyond its political boundaries to include An Overview. 2 southwestern Oregon, a small portion of western Endemic Genera . 2 Nevada, and the northern portion of Baja California, Almost Endemic Genera . 3 Mexico. This expanded region became known as the California Floristic Province (CFP). Keep in mind that List of Endemic Plants . 4 not all plants endemic to California lie within the CFP Plants Endemic to a Single County or Island 24 and others that are endemic to the CFP are not County and Channel Island Abbreviations . -
Discovery of the Selenium Isotopes
Discovery of the Selenium Isotopes J. Claes, J. Kathawa, M. Thoennessen∗ National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA Abstract Thirty-one selenium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented. ∗Corresponding author. Email address: [email protected] (M. Thoennessen) Preprint submitted to Atomic Data and Nuclear Data Tables April 28, 2010 Contents 1. Introduction . 3 2. Discovery of 64−94Se.................................................................................... 3 2.1. 64Se............................................................................................. 3 2.2. 65Se............................................................................................. 3 2.3. 66Se............................................................................................. 5 2.4. 67Se............................................................................................. 5 2.5. 68Se............................................................................................. 5 2.6. 69Se............................................................................................. 5 2.7. 70Se............................................................................................. 5 2.8. 71Se............................................................................................ -
Caliente Range Checklist-03Jun19
Checklist1 of Vascular Flora of the Caliente Range San Luis Obispo County, California (3 June 2019) David J. Keil Robert F. Hoover Herbarium Biological Sciences Department California Polytechnic State University San Luis Obispo, California Scientific Name Common Name Family Rare n Abronia pogonantha desert sand-verbena NYCTAGINACEAE o n Acanthomintha obovata subsp. cordata heart-leaved thorn-mint LAMIACEAE 4.2 v n ❀ Achyrachaena mollis blow wives ASTERACEAE v n Acmispon brachycarpus shortpod deervetch FABACEAE v n Acmispon maritimus var. maritimus coastal deer-vetch FABACEAE v 1 Please notify the author of additions or corrections to this list ([email protected]). Some of the native plants on this list were introduced to the preserve as a part of site management and restoration. ❀ — See Wildflowers of San Luis Obispo, California, second edition (2018) for photograph. Most are illustrated in the first edition as well; old names for some species in square brackets. n — California native i — exotic species, introduced to California, naturalized or waif. v — documented by one or more specimens (Consortium of California Herbaria record; specimen in OBI; or collection that has not yet been accessioned). Some of these species are historical records and no longer occur at Sweet Springs. o — observed during field surveys; no voucher specimen known R—California Rare Plant Rank Scientific Name Common Name Family Rare n ❀ Acmispon strigosus strigose deer-vetch FABACEAE o n Acmispon wrangelianus California deervetch FABACEAE v n Agoseris heterophylla var. cryptopleura annual mountain-dandelion ASTERACEAE v n Agoseris retrorsa spear-leaved mountain- ASTERACEAE v dandelion i Ailanthus altissima tree of heaven SIMAROUBACEAE v n Allenrolfea occidentalis iodine bush CHENOPODIACEAE v n Allium diabolense Diablo onion ALLIACEAE v n Allium howellii var. -
Table E-8. Bitter Creek NWR – Plants Bitter Creek NWR Scientific Name Common Name Family Acanthomintha Obovata Subsp
Appendix E - Plants and Wildlife Bitter Creek NWR Plant Lists Table E-8. Bitter Creek NWR – Plants Bitter Creek NWR Scientific Name Common Name Family Acanthomintha obovata subsp. cordata heart-leaved acanthomintha Lamiaceae Achillea millefolium common yarrow Asteraceae Acmispon americanus var. americanus [Lotus purshianus var. purshianus; Lotus typical American bird's-foot-trefoil Fabaceae unifoliolatus var. unifoliolatus] Acmispon brachycarpus [Lotus humistratus] short-podded lotus Fabaceae Acmispon glaber [Lotus scoparius] deer lotus Fabaceae Acmispon procumbens var. procumbens [Lotus typical silky bird's-foot-trefoil Fabaceae procumbens var. procumbens] Acmispon wrangelianus [Lotus wrangelianus, Wrangel's lotus Fabaceae Lotus subpinnatus, misapplied] Agoseris grandiflora var. grandiflora typical grassland agoseris Asteraceae Agoseris retrorsa spear-leaved agoseris Asteraceae Ailanthus altissima tree-of-heaven Simaroubaceae Aliciella leptomeria [Gilia leptomeria] sand aliciella Polemoniaceae Allium crispum crinkled onion Alliaceae [Liliaceae] Allium howellii var. howellii typical Howell's allium Alliaceae [Liliaceae] Allium peninsulare var. peninsulare typical peninsular allium Alliaceae [Liliaceae] Allophyllum gilioides subsp. gilioides typical gilia-like allophyllum Polemoniaceae Allophyllum gilioides subsp. violaceum gilia-like allophyllum Polemoniaceae Amaranthus blitoides mat amaranth Amaranthaceae Ambrosia acanthicarpa annual bur-sage Asteraceae Amsinckia douglasiana Douglas's fiddleneck Boraginaceae Amsinckia eastwoodiae Eastwood's