scholarly journals Neotype of Amanita spissa var. laeta (Basidiomycota, Amanitaceae)

2021 ◽  
Vol 78 (2) ◽  
pp. e118
Author(s):  
Felipe Wartchow
Keyword(s):  
Morphological Analysis ◽  
The One

While studying the genus Amanita in Brazil, a specimen identified by J. Rick as Amanita spissa var. laeta was found. Its morphological analysis suggested that this material certainly corresponded to the one used in the protologue of this name. For this reason, it is designated here as the neotype.

Nanostructures of Hydroxyapatite in Pluronic F 127: Preparation and Structural Characterization

2011 ◽  
Vol 493-494 ◽  
pp. 31-36
Author(s):  
Vanessa Danielle de Oliveira Fortes ◽  
Wandeberg Aranha Diniz ◽  
Euler Araujo dos Santos ◽  
Cristiane Xavier Resende ◽  
Luiz Eduardo Almeida ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Morphological Analysis ◽  
Pluronic F127 ◽  
X Ray Diffraction ◽  
Wet Chemical Method ◽  
Basic Reaction ◽  
Crystallite Sizes ◽  
Wet Chemical ◽  
The One ◽  
Sem Analyses

In this work, nanocomposites of hydroxyapatite and Pluronic F127 were prepared by a wet chemical method, using acid-basic reaction with Ca/P ratio of 1.67 in 10% (m/V) Pluronic F127 at 0, 37 and 90°C. The final concentration of Pluronic F127 was adjusted to 37% (m/V) at 4°C. Afterwards, the samples were lyophilized. Characterization was performed in purified samples (after Pluronic F127 removal), samples with 10% (m/V) of Pluronic F127 and calcined samples at 1000°C by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM). Analyses by XRD of non-calcined samples showed that hydroxyapatite was obtained, in which the samples prepared at 0°C exhibited larger peaks attributed to lower crystallite sizes. For the calcined samples, both Raman spectroscopy and XRD exhibited hydroxyapatite for the syntheses at 37 and 90°C whereas the one prepared 90°C were identified as β-tricalcium phosphate (β-TCP). Morphological analysis by SEM indicated that the hydroxyapatite was sphere or rod agglomerates in mesoporous morphology for the nanocomposites prepared at 0 and 37°C, while the sample prepared at 90°C was nanospheres agglomerated into a smother matrix. After Pluronic F127 removal, samples fabricated at 0 and 37 °C exhibited coalescence of the nanostructures, whereas the sample synthesized at 90°C kept mesoporous. Calcined samples showed sintering and some rods structures.

“The One Raised in Ornament?” Gendering Issues in the Qurʾan

Hawwa ◽  
2015 ◽  
Vol 13 (1) ◽  
pp. 1-24
Author(s):  
Samira al-Khawaldeh
Keyword(s):  
Critical Thinking ◽  
Morphological Analysis ◽  
Muslim Women ◽  
The Self ◽  
Self Image ◽  
Historical Investigation ◽  
The One

This paper presents a hermeneutic re-reading of the Qurʾanic Verses 43: 15–19 in the Chapter of Ornament (Surah al-Zukhruf), aiming to excavate the original interrogative nature of the Qurʾanic approach to woman’s positioning, and to expose the accumulative narratives that collapse the ontological into the cultural, reflecting negatively on the community. The paper argues against the assumption that the verses’ telos is to describe and prescribe; evidencing instead their critical and reproving tone. The tripartite methodology followed comprises a morphological analysis; a historical investigation that uncovers the regressive stance of authoritative exegetical texts; and a comparative overture, juxtaposing the Qurʾanic pronouncements with parallel modern concepts, revealing that the problems confronting women are of a persistent nature. Ultimately, the paper questions the authenticity of the self-image engrained in the consciousness of a majority of Muslim women and based on inherited parochialisms rather than rigorous application of critical thinking.

scholarly journals AAV-mediated cardiac gene transfer of wild-type desmin in mouse models for recessive desminopathies

Gene Therapy ◽  
2020 ◽  
Vol 27 (10-11) ◽  
pp. 516-524
Author(s):  
T. Ruppert ◽  
M. B. Heckmann ◽  
K. Rapti ◽  
D. Schultheis ◽  
A. Jungmann ◽  
...  
Keyword(s):  
Morphological Analysis ◽  
Cardiac Fibrosis ◽  
Striated Muscle ◽  
Phenotypic Variability ◽  
High Dose ◽  
Wild Type ◽  
Adeno Associated Virus ◽  
Cardiac Gene ◽  
The One ◽  
Old Mice

AbstractMutations in the human desmin gene cause autosomal-dominant and recessive cardiomyopathies and myopathies with marked phenotypic variability. Here, we investigated the effects of adeno-associated virus (AAV)-mediated cardiac wild-type desmin expression in homozygous desmin knockout (DKO) and homozygous R349P desmin knockin (DKI) mice. These mice serve as disease models for two subforms of autosomal-recessive desminopathies, the former for the one with a complete lack of desmin protein and the latter for the one with solely mutant desmin protein expression in conjunction with protein aggregation pathology in striated muscle. Two-month-old mice were injected with either a single dose of 5 × 1012 AAV9-hTNT2-mDes (AAV-Des) vector genomes or NaCl as control. One week after injection, mice were subjected to a forced swimming exercise protocol for 4 weeks. Cardiac function was monitored over a period of 15 month after injection and before the mice were sacrificed for biochemical and morphological analysis. AAV-mediated cardiac expression of wild-type desmin in both the homozygous DKO and DKI backgrounds reached levels seen in wild-type mice. Notably, AAV-Des treated DKO mice showed a regular subcellular distribution of desmin as well as a normalization of functional and morphological cardiac parameters. Treated DKI mice, however, showed an aberrant subcellular localization of desmin, unchanged functional cardiac parameters, and a trend toward an increased cardiac fibrosis. In conclusion, the effect of a high-dose AAV9-based desmin gene therapy is highly beneficial for the heart in DKO animals, but not in DKI mice.

Species boundaries in carp gudgeons (Eleotrididae : Hypseleotris) from the River Murray, South Australia: evidence for multiple species and extensive hybridization

2000 ◽  
Vol 51 (8) ◽  
pp. 805 ◽  
Author(s):  
Terry Bertozzi ◽  
Mark Adams ◽  
Keith F. Walker
Keyword(s):  
Morphological Analysis ◽  
South Australia ◽  
Biological Species ◽  
Species Boundaries ◽  
Hybrid Form ◽  
Hybrid Classes ◽  
Multiple Species ◽  
The One ◽  
Meristic Data ◽  
Hybrid Forms

Allozyme analyses of carp gudgeons (Hypseleotris) from five sites in the lower River Murray revealed three distinctive taxa designated HA, HB and HC, diagnosable from one another by fixed differences at 3–5 loci, and three apparent F 1 hybrid forms, HA¥HB, HA¥HX and HB¥HX, where HX denotes a taxon not sampled in its ‘pure’ form. Of all fish sampled, 25% were hybrids, although only one hybrid form was found at any one site, and never in company with both parental taxa. No hybrids involving HC were found, although this was the most common taxon, and no HA¥HB hybrids were present at the one site of demonstrated sympatry between the parental taxa. Morphological analysis and the lack of introgression confirm that HA, HB, and HC are distinct biological species. Partial meristic data suggest that HC corresponds to H. klunzingeri s.l., ‘Midgley’s carp gudgeon’ is a composite of HA, HB and HA¥HB hybrids, and ‘Lake’s carp gudgeon’ may be a composite of HX and one of its hybrids (HB¥HX). We speculate that one or more of the hybrid classes may be ‘unisexual lineages’ (clonally reproducing, usually all-female forms derived from hybridization between congeners).

Introduction

2018 ◽  
pp. xxii-16
Author(s):  
Jenny Audring ◽  
Francesca Masini
Keyword(s):  
Morphological Analysis ◽  
The Other ◽  
The One ◽  
The Individual

This opening chapter provides an overview of the aims, structure, and contents of the volume. It ties together the individual chapters by identifying common themes that run through the various theories of morphology presented in the volume. These are the place of morphology in the architecture of language, the degree to which it is independent from other components of the grammar, the basic units of morphological analysis, and the relation between morphology on the one hand and syntax, semantics, phonology, and the lexicon on the other. A brief summary of the literature on types of morphological theories helps the reader to become oriented to the landscape of frameworks. The chapter closes with an overview of the three parts of the volume and the individual chapters in each part.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

Fundamental Research into Thin Films in a Developing Country

1972 ◽  
Vol 30 ◽  
pp. 500-501
Author(s):  
J.A. Eades ◽  
E. Grünbaum
Keyword(s):  
Thin Films ◽  
Growth Process ◽  
Empirical Process ◽  
Nucleation And Growth ◽  
Research Groups ◽  
Film Research ◽  
Fundamental Research ◽  
Controlled Deposition ◽  
The One ◽  
The University

In the last decade and a half, thin film research, particularly research into problems associated with epitaxy, has developed from a simple empirical process of determining the conditions for epitaxy into a complex analytical and experimental study of the nucleation and growth process on the one hand and a technology of very great importance on the other. During this period the thin films group of the University of Chile has studied the epitaxy of metals on metal and insulating substrates. The development of the group, one of the first research groups in physics to be established in the country, has parallelled the increasing complexity of the field.The elaborate techniques and equipment now needed for research into thin films may be illustrated by considering the plant and facilities of this group as characteristic of a good system for the controlled deposition and study of thin films.

STM studies of crystal growth

1991 ◽  
Vol 49 ◽  
pp. 374-375
Author(s):  
M. G. Lagally
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Chemical Vapor ◽  
Sputter Deposition ◽  
Field Of View ◽  
Scanning Tunneling ◽  
Wide Field ◽  
Tunneling Microscopy ◽  
Wide Field Of View ◽  
The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

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