scholarly journals Antonella Sarti Evans translates Mary Maringikura Campbell

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Antonella Sarti Evans
Keyword(s):  
Recent Collection ◽  
First Time

‘Yellow Moon. E Marama Rengarenga’: 7 poems by Mary Maringikura Campbell translated for the first time into Italian by Antonella Sarti Evans The original texts of Mary Maringikura Campbell’s poems have been reproduced here by the author’s generous permission and have been included in the recent collection ‘Yellow Moon. E Marama Rengarenga’ (HeadworX, Wellington, June 2020).

Cyathea gigantea (Wall. ex Hook.) Holttum, A New Record to Andaman & Nicobar Islands

2016 ◽  
Vol 39 (1) ◽  
pp. 77-78
Author(s):  
Bhupendra Kholia ◽  
Lal Singh ◽  
S. Srivastava
Keyword(s):  
New Record ◽  
Andaman And Nicobar Islands ◽  
Tree Fern ◽  
Recent Collection ◽  
Nicobar Islands ◽  
First Time

Based on the recent collection a tree fern Cyathea gigantea (Wall. ex Hook.) Holttum is reported here for the first time from Andaman and Nicobar Islands, India.

Building the regional understanding of the deep-water geology and benthic ecology of the Great Australian Bight

2017 ◽  
Vol 57 (2) ◽  
pp. 798 ◽  
Author(s):  
Andrew Ross ◽  
Alan Williams ◽  
Asrar Talukder ◽  
Joanna Parr ◽  
Christine Trefry ◽  
...  
Keyword(s):  
Deep Water ◽  
Autonomous Underwater Vehicle ◽  
Sedimentary Environment ◽  
Hydrocarbon Exploration ◽  
Benthic Ecology ◽  
Geological Processes ◽  
Recent Collection ◽  
Biological Sampling ◽  
Great Australian Bight ◽  
First Time

The Great Australian Bight (GAB) represents one of Australia’s most prospective frontier hydrocarbon exploration regions. Its largest subregion – the Ceduna sub-basin – is a deep (slope to abyss) area of 126 300 km2 with a 15-km deep sedimentary sequence that remains effectively untested. Knowledge of the Ceduna sub-basin’s geology is rapidly evolving following recent collection of 3D seismic datasets, but many questions remain about its geological evolution. The composition of the seabed biota and its ecology in the deep GAB was virtually unknown. To address a range of geological and biological questions, the multidisciplinary Great Australian Bight Deepwater Marine Program aims to build a more comprehensive regional understanding of the geology of the deep (~700–5437 m) GAB, with a focus on rocky outcrops, segif and volcanic seamounts, and to document aspects of the biota and benthic ecology for the first time. A field campaign of 63 days in 2015 aboard the RV Investigator and a second support vessel for an Autonomous Underwater Vehicle completed a detailed mapping of 10 225 km2 of seabed. In addition, physical geological and biological sampling collected 1.3 tonnes of volcanic and sedimentary rocks and over 25 553 biological specimens. A surprisingly complex deep-water sedimentary environment was revealed, including several previously unmapped deep-water canyons and 10 previously unmapped volcanic seamounts. A total of 430 species were collected, of which nearly half appeared to be unknown to science. This paper uses results from this survey to provide insights into the geological processes that have shaped the GAB, and briefly describes the makeup of biological assemblages present on the seabed.

On Enterobius vermicularis (Linnaeus, 1758) and Some Related Species from Primates and Rodent.

1950 ◽  
Vol 24 (4) ◽  
pp. 171-204 ◽  
Author(s):  
A. A. Sandosham
Keyword(s):  
New Species ◽  
Polarized Light ◽  
First Record ◽  
Negative Findings ◽  
Recent Collection ◽  
Basal Portion ◽  
First Time ◽  
Postmortem Examinations ◽  
A New Species ◽  
Unknown Male

The value of the hanging-drop technique as used by Professor Buckley for the examination of the different views of the tip of tail and head of small nematodes is stressed. The spicules of various species of Enterobius have been examined with polarized light and the significance of the basal portion of the spicules is discussed.E. vermicularis is recorded for the first time from the Chimpanzee(Anthropopithecus troglodytes), the Lar Gibbon of Malaya (Hylobates lar) and the Silky or Lion Marmoset (Leontocebus rosalia) all of which had been in the London Zoological Gardens for varying periods.The hitherto unķnown male of E. anthropopitheci is described and the female is redescribed.A new species, E. buckleyi from the Orang Utan(Pongo pygmaeus) is described.A new species, E. lerouxi from the Gorilla(Gorilla gorilla) is described. This is the first record of an Enterobius from this host.E. bipapillatus is described and recorded for the first time from the Guenon Monkey(Cercopithecus aethiops) from S. Rhodesia.A new species, E. brevicauda is described from the Chacma Baboon(Papio porcarius) from S. Rhodesia. This is the first record of an Enterobius from this host.Negative findings for Enterobius are recorded from ten postmortem examinations and fourteen NIH swab examinations of Rhesus Monkeys(Macaca mulata).A new species, E. interlabiata is described from the Feline Douroucouli(Aotus felinus) from S. America. This is the first record of an Enterobius from this host.In view of the criticism of Kreis (1932) the type and paratype material of E. atelis, E. lagothricis and E. duplicidens and some more recent collection of E. lagothricis have been re-examined and the findings of Cameron (1929) and Buckley (1981) confirmed.

Sticherus holttumii (Gleicheniaceae, Polypodiopsida), a new species from Brazil, and the first Brazilian record of Sticherus brevitomentosus

Phytotaxa ◽  
2018 ◽  
Vol 340 (2) ◽  
pp. 181
Author(s):  
LUCAS VIEIRA LIMA ◽  
ALEXANDRE SALINO
Keyword(s):  
New Species ◽  
National Park ◽  
Brazilian Amazon ◽  
Identification Key ◽  
Similar Species ◽  
Recent Collection ◽  
First Time ◽  
A New Species

Sticherus holttumii, a new species from Brazil, is here described, illustrated, and compared to its most similar species. Additionally, S. brevitomentosus is recorded for the first time in Brazil, based on a recent collection from Pico da Neblina National Park. We also provide an identification key to all species of Sticherus from the Brazilian Amazon.

The application of Helotium to agarics. Part I. Nomenclature. Part II. Notes on selected species from Canada

1982 ◽  
Vol 60 (10) ◽  
pp. 1998-2013 ◽  
Author(s):  
S. A. Redhead
Keyword(s):  
North America ◽  
Type Species ◽  
Botanical Nomenclature ◽  
New Combinations ◽  
Important Species ◽  
Recent Collection ◽  
Generic Description ◽  
First Time ◽  
Current Code ◽  
Selection Of

The typification of Helotium Tode 1790, is detailed. Tode's comments in the protologue indicated that Helotium hirsutum Tode was the more important species upon which the generic description was based. The earliest explicit (lecto) typification was proposed by Fries in 1825. Fries's selection of Helotium gibbum Alb. & Schw. supports, by proxy, the acceptance of the original Helotium hirsutum as type now that both combinations are recognized as synonyms of each other. Evidence is presented to demonstrate that an attempt by Donk in 1962 to lectotypify Helotium with Helotium glabrum Tode was made arbitrarily, without direct reference to the protologue. A single recent collection is designated as neotype for both H. hirsutum and H. gibbum. Hemimycena crispula (Quél.) Singer is considered to be conspecific hence making the genus Hemimycena sensu Singer a later synonym of Helotium. Shortly after the publication of the name Helotium by Tode, the generic name was applied to both ascomycetes and basidiomycetes by Gmelin in 1792. The formal division of the genus into two, based on rules in the current code of botanical nomenclature, did not occur until 1805 when De Lamarck and De Candolle completed the process started by Persoon in 1799. The type species of Helotium Pers. apud D.L. &D.C. H. aciculare (Bull.) Pers. apud D.L. &D.C. was selected by Fries in 1818. Thirty-two new combinations are proposed in Helotium Tode for species which were mainly Hemimycena previously. Three invalid species names are validated in Helotium and two new names are proposed to avoid the creation of later homonyms. In addition, Helotium cyphelloides sp. nov. on Carex and Helotium nebulophilum sp. nov. on moss are described. Helotium substellatum (Kühner) comb. nov. is reported for the first time from North America and Helotium albicolor (A. H. Smith) comb. nov. with Helotium hirsutum for the first time in Canada. All five occur in British Columbia. Mycena litoralis A. H. Smith is considered to be a synonym of Helotium pseudocrispulum (Kühner) comb. nov. which is recognized for the first time in North America.

Annulate lamellae in the Sertoli cells of guinea pig testis after unilateral torsion of the spermatic cord

1984 ◽  
Vol 42 ◽  
pp. 196-197
Author(s):  
J. Chakraborty ◽  
A. P. Sinha Hikim ◽  
J. S. Jhunjhunwala
Keyword(s):  
Sertoli Cells ◽  
Guinea Pigs ◽  
Spermatic Cord ◽  
Present Report ◽  
Cell Types ◽  
Annulate Lamellae ◽  
Spermatogenic Cells ◽  
Electron Microscopic ◽  
Structural Details ◽  
First Time

Although the presence of annulate lamellae was noted in many cell types, including the rat spermatogenic cells, this structure was never reported in the Sertoli cells of any rodent species. The present report is based on a part of our project on the effect of torsion of the spermatic cord to the contralateral testis. This paper describes for the first time, the fine structural details of the annulate lamellae in the Sertoli cells of damaged testis from guinea pigs.One side of the spermatic cord of each of six Hartly strain adult guinea pigs was surgically twisted (540°) under pentobarbital anesthesia (1). Four months after induction of torsion, animals were sacrificed, testes were excised and processed for the light and electron microscopic investigations. In the damaged testis, the majority of seminiferous tubule contained a layer of Sertoli cells with occasional spermatogonia (Fig. 1). Nuclei of these Sertoli cells were highly pleomorphic and contained small chromatinic clumps adjacent to the inner aspect of the nuclear envelope (Fig. 2).

Electron spectroscopic imaging and diffraction

1991 ◽  
Vol 49 ◽  
pp. 706-707
Author(s):  
M. Rühle ◽  
J. Mayer ◽  
J.C.H. Spence ◽  
J. Bihr ◽  
W. Probst ◽  
...  
Keyword(s):  
Materials Science ◽  
Electron Spectroscopic Imaging ◽  
Magnetic Filter ◽  
Magnetic Imaging ◽  
Illumination System ◽  
Probe Size ◽  
Diffraction Patterns ◽  
Fritz Haber ◽  
Koehler Illumination ◽  
First Time

A new Zeiss TEM with an imaging Omega filter is a fully digitized, side-entry, 120 kV TEM/STEM instrument for materials science. The machine possesses an Omega magnetic imaging energy filter (see Fig. 1) placed between the third and fourth projector lens. Lanio designed the filter and a prototype was built at the Fritz-Haber-Institut in Berlin, Germany. The imaging magnetic filter allows energy-filtered images or diffraction patterns to be recorded without scanning using efficient area detection. The energy dispersion at the exit slit (Fig. 1) results in ∼ 1.5 μm/eV which allows imaging with energy windows of ≤ 10 eV. The smallest probe size of the microscope is 1.6 nm and the Koehler illumination system is used for the first time in a TEM. Serial recording of EELS spectra with a resolution < 1 eV is possible. The digital control allows X,Y,Z coordinates and tilt settings to be stored and later recalled.

A Novel TEM Technique for Characterizing As-Grown CVD Diamond Films

1991 ◽  
Vol 49 ◽  
pp. 956-957 ◽  
Author(s):  
Z.L. Wang ◽  
J. Bentley ◽  
R.E. Clausing ◽  
L. Heatherly ◽  
L.L. Horton
Keyword(s):  
Diamond Films ◽  
Chemical Vapor ◽  
Growth Direction ◽  
Dark Field ◽  
Growth Surface ◽  
Specimen Preparation ◽  
Transmission Electron ◽  
Diffraction Patterns ◽  
First Time ◽  
Microstructural Studies

Microstructural studies by transmission electron microscopy (TEM) of diamond films grown by chemical vapor deposition (CVD) usually involve tedious specimen preparation. This process has been avoided with a technique that is described in this paper. For the first time, thick as-grown diamond films have been examined directly in a conventional TEM without thinning. With this technique, the important microstructures near the growth surface have been characterized. An as-grown diamond film was fractured on a plane containing the growth direction. It took about 5 min to prepare a sample. For TEM examination, the film was tilted about 30-45° (see Fig. 1). Microstructures of the diamond grains on the top edge of the growth face can be characterized directly by transmitted electron bright-field (BF) and dark-field (DF) images and diffraction patterns.

A microscopic marker experiment study on high temperature oxidation of Ni-Al alloy

1986 ◽  
Vol 44 ◽  
pp. 514-515
Author(s):  
Shou-kong Fan
Keyword(s):  
Transport Mechanism ◽  
High Temperature Oxidation ◽  
Transverse Section ◽  
Al Alloy ◽  
Metal Interface ◽  
Electron Microscopic ◽  
Temperature Oxidation ◽  
Analytical Electron ◽  
Microscopic Studies ◽  
First Time

Transmission and analytical electron microscopic studies of scale microstructures and microscopic marker experiments have been carried out in order to determine the transport mechanism in the oxidation of Ni-Al alloy. According to the classical theory, the oxidation of nickel takes place by transport of Ni cations across the scale forming new oxide at the scale/gas interface. Any markers deposited on the Ni surface are expected to remain at the scale/metal interface after oxidation. This investigation using TEM transverse section techniques and deposited microscopic markers shows a different result,which indicates that a considerable amount of oxygen was transported inward. This is the first time that such fine-scale markers have been coupled with high resolution characterization instruments such as TEM/STEM to provide detailed information about evolution of oxide scale microstructure.

Direct imaging of charge transfer

1996 ◽  
Vol 54 ◽  
pp. 680-681
Author(s):  
Yimei Zhu ◽  
J. Tafto
Keyword(s):  
Charge Transfer ◽  
Electron Diffraction ◽  
Scattering Amplitude ◽  
High Temperature Superconductors ◽  
Charge Carriers ◽  
Image Charge ◽  
Net Charge ◽  
Long Time ◽  
Electron Holes ◽  
First Time

The electron holes confined to the CuO2-plane are the charge carriers in high-temperature superconductors, and thus, the distribution of charge plays a key role in determining their superconducting properties. While it has been known for a long time that in principle, electron diffraction at low angles is very sensitive to charge transfer, we, for the first time, show that under a proper TEM imaging condition, it is possible to directly image charge in crystals with a large unit cell. We apply this new way of studying charge distribution to the technologically important Bi2Sr2Ca1Cu2O8+δ superconductors.Charged particles interact with the electrostatic potential, and thus, for small scattering angles, the incident particle sees a nuclei that is screened by the electron cloud. Hence, the scattering amplitude mainly is determined by the net charge of the ion. Comparing with the high Z neutral Bi atom, we note that the scattering amplitude of the hole or an electron is larger at small scattering angles. This is in stark contrast to the displacements which contribute negligibly to the electron diffraction pattern at small angles because of the short g-vectors.

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