The cytology of Brachycome. II. The subgenus Metabrachycome: a general survey

1978 ◽  
Vol 26 (5) ◽  
pp. 699 ◽  
Author(s):  
CR Carter
Keyword(s):  
Chromosomal Rearrangements ◽  
Base Number ◽  
Ecological Diversity ◽  
Chromosome Counts ◽  
General Survey ◽  
Species Complexes ◽  
Wide Range ◽  
Relationship Of ◽  
The Relationship ◽  
Western Australian

Chromosome counts for 12 of the 17 known species of Metabrachycome are reported. All species have x = 9. Nine species are diploid (2n = 18), and the other three species show intraspecific polyploidy on base x = 9. Two of these three have a sexual diploid within the complex. The polyploids are probably apomictic. G. L. Davis recognized morphological 'varieties' within each of the three polyploid species complexes, but the relationship of these varieties to the various ploid levels is unclear. Metabrachycome, which is primarily Western Australian, exhibits a wide range of morphological and ecological diversity, yet it is chromosomally very conservative, with no change in chromosome base number, and no obvious karyotype differentiation. This contrasts sharply with the primarily eastern Eubrachycome which is extremely labile chromosomally, with base numbers ranging from n = 2 ton = 15. It is suggested that the more stable environment in Western Australia since the mid Tertiary may have been less conducive to the establishment and maintenance of chromosomal rearrangements.

Behavior as a window on physiology: a simple apparatus for recording caterpillar feeding.

1992 ◽  
Vol 262 (6) ◽  
pp. S9 ◽  
Author(s):  
E Bowdan
Keyword(s):  
Feeding Behavior ◽  
Control Mechanisms ◽  
Inexpensive Method ◽  
Simple Apparatus ◽  
Physiological Processes ◽  
Wide Range ◽  
Relationship Of ◽  
The Relationship

Regulation of feeding is a fundamental element of homeostasis. This is reflected in the similarity of control mechanisms in a wide range of animals, including insects and humans. A close examination of feeding behavior can illuminate the physiological processes driving regulation. A simple, inexpensive method for recording fine details of feeding by caterpillars is described. Possible experiments, interpretation of the data, and the relationship of observations to the underlying physiology, are outlined.

Fungal melanins: a review

1998 ◽  
Vol 44 (12) ◽  
pp. 1115-1136 ◽  
Author(s):  
M J Butler ◽  
A W Day
Keyword(s):  
Molecular Biology ◽  
Analytical Methods ◽  
Enzymatic Degradation ◽  
Fundamental Properties ◽  
Wide Range ◽  
Lignin Peroxidases ◽  
Fungal Melanin ◽  
Relationship Of ◽  
The Relationship ◽  
Fungal Melanins

The relationship of polyketide melanogenesis molecular biology to that of nonmelanin-producing pathways in a wide range of fungi and other organisms is discussed. Analytical methods and fundamental properties of melanins are discussed and fungal melanin properties are compared with those of animal and bacterial melanins. The enzymatic degradation of melanins by lignin peroxidases is described.Key words: fungal melanin, polyketide melanin, DHN melanin, melanin degradation, melanin properties, melanin analysis.

Inclusive Design and Usability

2000 ◽  
Vol 44 (38) ◽  
pp. 893-896
Author(s):  
W.S. Green
Keyword(s):  
Inclusive Design ◽  
Wide Range ◽  
User Groups ◽  
Relationship Of ◽  
The Relationship

This introduction to the symposium Inclusive Design and Usability gives an overview of some of the issues and problems facing ergonomists and designers who attempt to provide access to current technologies for a wide range of user groups, particularly those who may be considered disadvantaged or handicapped. The relationship of ergonomics and design is raised.

Ekphrasis

2017 ◽  
Author(s):  
Joel Altman
Keyword(s):  
Early Modern ◽  
Usual Sense ◽  
Early Modern Theatre ◽  
Early Modern English ◽  
Wide Range ◽  
Word Painting ◽  
English Stage ◽  
Relationship Of ◽  
The Relationship ◽  
Flexible Capacity

This chapter examines the use of ekphrasis in early modern theatre, with particular emphasis on its effect on the stage and the relationship of ekphrastic speech to the ongoing action in which it is enunciated. It maps the parameters of ekphrasis on the early modern English stage by considering a few examples of the ways in which ekphrasis instantiates early modern theatricality. It also discusses the expressive potential of ekphrastic speech and its transmission to the listener as well as the ironic uses of ekphrasis as a mode of persuasion, whether directed to oneself, an on-stage auditor, off-stage auditors, or all three. It argues that ekphrasis creates nothing less than what it calls ‘the psyche of the play’ and explains how the unusually flexible capacity of the staged word allows it to be used for a wide range of theatrical techniques, including the usual sense of ‘word-painting’. Finally, it looks at William Shakespeare’s deployment of ekphrasis in his work such asHamlet.

Australian Applied Linguistics in relation to international trends

2010 ◽  
Vol 33 (1) ◽  
pp. 4.1-4.32 ◽  
Author(s):  
Richard B. Baldauf ◽  
Robert B. Kaplan
Keyword(s):  
Text Analysis ◽  
International Association ◽  
Applied Linguistics ◽  
Historical Review ◽  
International Trends ◽  
Diverse Field ◽  
Wide Range ◽  
The World ◽  
Relationship Of ◽  
The Relationship

Applied Linguistics is a diverse field, comprising a substantial number of sub-fields, sub-specialisations and related fields. To see that this is the case one need only examine the various hand- books and encyclopaedic references that have been published in the last ten years to see the wide range of topics that have been covered. As with many professional areas in academia, Applied Linguistics is organised around national organisations, with its international structure being a loose confederation known as the International Association of Applied Linguistics (AILA). Given these diverse academic and structural arrangements, it should not be surprising if academics within different national associations were to cluster around different interests within the field. This study explores the question of what emphases are found in various parts of the world in Applied Linguistics, and in particular, the relationship of Australian Applied Linguistics to international trends using a structural text analysis of abstracts related to Applied Linguistics as well as an historical review of the trends involved.

Marine Mollusca of Islay and Skye

1983 ◽  
Vol 83 ◽  
pp. 195-215
Author(s):  
Shelagh M. Smith
Keyword(s):  
Tidal Range ◽  
Baseline Survey ◽  
General Survey ◽  
Marine Fauna ◽  
Additional Work ◽  
Number Of Factors ◽  
Molluscan Fauna ◽  
Single Method ◽  
Relationship Of ◽  
The Relationship

SynopsisBaseline surveys of Islay and Skye show that the shores of the latter island have the more diverse mollusc population. Detailed investigation of the Mollusca associated with algae corroborates the general survey. The reason for the comparative paucity of Mollusca on Islay appears to stem from a number of factors of which the lack of variety of habitats and the shorter shores with little tidal range are the most obvious. Additional work carried out by diving and dredging enhanced the data from Skye, supporting the view that a combination of approaches produces the best results in a baseline survey, and helps to minimise any false impression of a marine fauna which may arise in surveys arbitrarily restricted to above or below low water mark or to a single method of obtaining data. The relationship of the marine molluscan fauna of Islay and Skye to that of west Scotland as a whole is briefly discussed.

scholarly journals The unbearable lightness of being alternative: Idealism‐realism and purism‐pragmatism in Greek alternative media

2020 ◽  
Vol 5 (1) ◽  
pp. 103-122
Author(s):  
Dimitra L. Milioni ◽  
Pantelis Vatikiotis
Keyword(s):  
Political Economy ◽  
Alternative Media ◽  
The Political ◽  
Organization Level ◽  
Number Of Factors ◽  
Wide Range ◽  
Dialectical Relationship ◽  
Production Organization ◽  
Relationship Of ◽  
The Relationship

The article explores alternative media sustainability across a wide range of Greek projects. In this regard, it probes into a number of factors related to both the political economy (funding, organization) of these projects and the nature (real/‘imaginary’, broad reach/niche) of the relationship with their communities/audiences. The findings of the research reveal a dynamic and contradictory field regarding alternative media resilience in terms of the dialectical relationship of idealistic/realistic (on the production, organization level) and puristic/pragmatic (on the communication, reach level) features. The article concludes by highlighting the strategies employed by the most successful projects in terms of sustainability in relation to their positioning along the idealism/realism and purism/pragmatism nexus.

Distensibility and pressure-flow relationship of the pulmonary circulation. I. Single-vessel model

1990 ◽  
Vol 68 (4) ◽  
pp. 1501-1513 ◽  
Author(s):  
Z. Bshouty ◽  
M. Younes
Keyword(s):  
Pulmonary Circulation ◽  
Low Flow ◽  
Elastic Behavior ◽  
Vasomotor Tone ◽  
Pressure Flow ◽  
Parallel Shift ◽  
Lack Of Information ◽  
Wide Range ◽  
Relationship Of ◽  
The Relationship

To ascertain the relative contributions of vascular distensibility and nonhomogeneous behavior within the pulmonary circulation to the distinctive nonlinear relationship between inflow pressure (Pin) and flow [pressure-flow (P-F) relationship] and between Pin and outflow pressure (Pout) at constant flow (Pin-Pout relationship), we developed a multibranched model in which the elastic behavior of, and forces acting on, individual branches can be varied independently. The response of the multibranched model is described in the companion article (J. Appl. Physiol. 68: 1514-1527, 1990). Here we describe the methods used and the responses of single components of the larger model. Perivascular pressure is modeled as a function of intravascular and transpulmonary pressures (Pv and Ptp, respectively) and vessel length as a function of lung volume. These and the relationship between vascular area (A) and transmural pressure (Ptm) were modeled primarily from the dog data of Smith and Mitzner (J. Appl. Physiol. 48: 450-467, 1980). Vasomotor tone is modeled as a radial collapsing pressure (Pt) in the same plane as Ptm. In view of lack of information about the relationship between Pt and A for a given active state, different patterns were assumed that span a wide range of possible relationships. The P-F and Pin-Pout relationships of single vessels were very similar to those reported for the entire intact circulation. Of note, the slope of the Pin-Pout relationship in the low Pout range (0-5 Torr) was very low (less than 0.25) and increased gradually with Pout toward unity. Vasomotor tone caused an apparent parallel shift in the P-F relationship in the physiological flow range of the dog (2-8 l/min) regardless of the pattern used to model the Pt vs. A relationship; different patterns affected the P-F relationship only over the low flow range before the parallel shift was established.

Some Chemical Characteristics of Anorthositic Suites and their Significance

1973 ◽  
Vol 10 (1) ◽  
pp. 54-71 ◽  
Author(s):  
R. F. Emslie
Keyword(s):  
Spatial Association ◽  
Physical Characteristics ◽  
Chemical Data ◽  
Chemical Characteristics ◽  
High K ◽  
Wide Range ◽  
Orogenic Belts ◽  
Relationship Of ◽  
The Relationship

Spirited discussion continues about the nature of the relationship of rocks of anorthositic composition to intermediate and silicic rocks comprising so-called mangerites, charnockites, adamellites, etc. Because of close spatial association, all of these rocks may be considered to constitute an 'anorthosite suite' without prejudgement as to genetic implications.About 700 rock analyses, largely from the literature but supplemented by previously unpublished analyses from the Michikamau and Morin intrusions have been used to examine some of the chemical characteristics of the anorthosite suites. The suites are commonly high in iron relative to magnesium and alkalies, high in alumina, and have high K2O/SiO2 ratios over a wide range of SiO2 concentrations. The chemical data together with the physical characteristics of the anorthosite suites are interpreted to mean that the magmas are orogenically generated but emplaced on the flanks of orogenic belts in 'anorogenic' environments. Rapakivi granitic suites are chemically similar to the silicic members of the anorthosite suites.

The cytology of Brachycome. I. The subgenus Eubrachycome: A general survey

1970 ◽  
Vol 18 (1) ◽  
pp. 99 ◽  
Author(s):  
S Smith-White ◽  
CR Carter ◽  
HM Stace
Keyword(s):  
Chromosome Number ◽  
Chromosome Numbers ◽  
Base Number ◽  
Undescribed Species ◽  
General Survey ◽  
Chromosome Races ◽  
Chromosomal Change ◽  
Cytological Data ◽  
Wide Range ◽  
Annual Habit

Chromosome number determinations and cytological observations are reported for 37 recognized taxonomic species and varieties, and for a number of undescribed species and chromosome races in Eubrachycome. Additionally, chromosome numbers are reported for six species of Metabrachycome and two species of related genera. A wide range of numbers has been found. It is inferred that x = 9 is the primitive base number in the group. Eubrachycome has used various modes of chromosomal change, including polyploidy, amphidiploidy, decrease in base number, and the establishment of B. chromosomes. The present taxonomy of the group requires revision, taking into account cytological data. Primitive Eubrachycome was probably a mesic perennial. The evolution of desert species has involved reduction in chromosome number and the adoption of the annual habit, but other methods of desert adaptation have been available. Many species are chromosomally unstable, and may have been subject to catastrophic selection.

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