Sur la validité d’Oreina (Chrysochloa) cacaliae tristis (Coleoptera, Chrysomelidae)

2021 ◽  
Vol 126 (3) ◽  
pp. 329-335
Author(s):  
Christian Bontems
Keyword(s):  
Isolated Population ◽  
Central Alps ◽  
Blue Colour ◽  
Recent Treatment ◽  
The Status

About the validity of Oreina (Chrysochloa) cacaliae tristis (Coleoptera, Chrysomelidae). The status of Oreina cacaliae tristis (Fabricius, 1792), established for more than two centuries, is wholly confirmed by the fine elytral microsculpture and the blue colour of the insects, which represent moreover an isolated population of the occidental and central Alps. The recent treatment of tristis as a synonymous of Oreina cacaliae (Schrank, 1785) is not acceptable: tristis must be maintained as a subspecies of cacaliae.

Managing gene flow among isolated population fragments

2019 ◽  
pp. 115-134
Author(s):  
Richard Frankham ◽  
Jonathan D. Ballou ◽  
Katherine Ralls ◽  
Mark D. B. Eldridge ◽  
Michele R. Dudash ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Genetic Information ◽  
Management Strategies ◽  
Genetic Data ◽  
Isolated Population ◽  
Detailed Data ◽  
Genetic Management ◽  
Flow Management ◽  
The Status

Even without detailed genetic data, sound genetic management strategies for augmenting gene flow can be instituted by considering population genetics theory, and/or computer simulations. When detailed data are lacking, moving (translocating) some individuals into isolated inbred population fragments is better than moving none, as long as the risk of outbreeding depression is low. With more detailed genetic information, more precise genetic management of fragmented populations can be achieved. Using mean kinship within and between populations (estimated from modeling, pedigrees, genetic markers or genomes), and moving individuals among fragments with the lowest between fragment mean kinships provides the best approach to gene flow management. Populations should then be monitored to confirm that movement of individuals has resulted in the desired levels of gene flow, genetic diversity has been enhanced, and that the status of the population is improving.

Evaluation and prediction of the status of COVID-19 epidemic prevention and control based on the SEIR+CAQ model

2021 ◽  
pp. 2150051
Author(s):  
Xingzhi Chen ◽  
Baodan Tian ◽  
Feixiang Huang ◽  
Daiwen Wang ◽  
Linyan Fu ◽  
...  
Keyword(s):  
Reproduction Number ◽  
Development Trend ◽  
Isolated Population ◽  
Prevention Policy ◽  
The Status ◽  
Simulation Results ◽  
The Government ◽  
And Control ◽  
The Development Trend ◽  
Disease Free

This paper analyzes the spread of the COVID-19 epidemic in China, establishes a [Formula: see text] epidemiologic model that classifies the diagnosed population into asymptomatic, mild, and severe, and considers the condition of an isolated population. First of all, we theoretically analyzed the key problems of the disease-free equilibrium, stability, and basic reproduction number of the model. Then, combined with the actual data, the development trend of the epidemic situation is simulated and compared, and the influence of some important parameters is discussed in the model evaluation part. Finally, based on the theoretical analysis and numerical simulation results, we forecast the future development of the COVID-19 epidemic and put forward some reasonable scientific suggestions for the government to formulate a future epidemic prevention policy.

Additional records of small mammals in northern South Australia

2011 ◽  
Vol 33 (1) ◽  
pp. 68 ◽  
Author(s):  
B. Allen ◽  
J. L. Read ◽  
G. Medlin
Keyword(s):  
Small Mammals ◽  
Small Mammal ◽  
Large Scale ◽  
South Australia ◽  
Isolated Population ◽  
Research Project ◽  
The North ◽  
North Eastern ◽  
The Status ◽  
Prey Remains

Analysis of prey remains found in predator scats is a valuable tool for assessing the distribution and status of small mammal populations. As part of a large-scale dingo research project in northern South Australia, the prey remains found in 1845 dingo scats were analysed. A range of species were identified as expected, though, of particular interest, additional records of Rattus villosissimus, Notomys fuscus and Pseudomys australis were obtained. Our R. villosissimus records confirm the contemporary range of this species in the north-eastern pastoral zone, while our N. fuscus records support other recent records of this species in the same area. Our P. australis record indicates that an isolated population of this species exists in the Strzelecki Desert, ~400 km east of the nearest known population. The status of these populations remains unknown, including the risk of dingo predation to them.

The study of interfacial reactions of nickel thin films on GaAs

1983 ◽  
Vol 41 ◽  
pp. 156-157
Author(s):  
L.J. Chen ◽  
Y.F. Hsieh
Keyword(s):  
Thin Films ◽  
Integrated Circuits ◽  
Interfacial Reactions ◽  
Metal Contacts ◽  
Nickel Thin Films ◽  
Thin Foils ◽  
The Status ◽  
Si Doped ◽  
Electron Microscopes

One measure of the maturity of a device technology is the ease and reliability of applying contact metallurgy. Compared to metal contact of silicon, the status of GaAs metallization is still at its primitive stage. With the advent of GaAs MESFET and integrated circuits, very stringent requirements were placed on their metal contacts. During the past few years, extensive researches have been conducted in the area of Au-Ge-Ni in order to lower contact resistances and improve uniformity. In this paper, we report the results of TEM study of interfacial reactions between Ni and GaAs as part of the attempt to understand the role of nickel in Au-Ge-Ni contact of GaAs.N-type, Si-doped, (001) oriented GaAs wafers, 15 mil in thickness, were grown by gradient-freeze method. Nickel thin films, 300Å in thickness, were e-gun deposited on GaAs wafers. The samples were then annealed in dry N2 in a 3-zone diffusion furnace at temperatures 200°C - 600°C for 5-180 minutes. Thin foils for TEM examinations were prepared by chemical polishing from the GaA.s side. TEM investigations were performed with JE0L- 100B and JE0L-200CX electron microscopes.

Fate of sperm membrane in fertilized ova

1993 ◽  
Vol 51 ◽  
pp. 40-41
Author(s):  
Frank J. Longo
Keyword(s):  
Electron Microscopy ◽  
Electrical Activity ◽  
Sea Urchins ◽  
Morphological Changes ◽  
Integrated System ◽  
Electrophysiological Recording ◽  
Experimental Conditions ◽  
The Status ◽  
Sperm Membrane ◽  
Temporal And Spatial

Measurement of the egg's electrical activity, the fertilization potential or the activation current (in voltage clamped eggs), provides a means of detecting the earliest perceivable response of the egg to the fertilizing sperm. By using the electrical physiological record as a “real time” indicator of the instant of electrical continuity between the gametes, eggs can be inseminated with sperm at lower, more physiological densities, thereby assuring that only one sperm interacts with the egg. Integrating techniques of intracellular electrophysiological recording, video-imaging, and electron microscopy, we are able to identify the fertilizing sperm precisely and correlate the status of gamete organelles with the first indication (fertilization potential/activation current) of the egg's response to the attached sperm. Hence, this integrated system provides improved temporal and spatial resolution of morphological changes at the site of gamete interaction, under a variety of experimental conditions. Using these integrated techniques, we have investigated when sperm-egg plasma membrane fusion occurs in sea urchins with respect to the onset of the egg's change in electrical activity.

Revisiting the status of dental ethics instruction

2000 ◽  
Vol 64 (11) ◽  
pp. 772-774 ◽  
Author(s):  
JG Odom ◽  
PL Beemsterboer ◽  
TD Pate ◽  
NK Haden
Keyword(s):  
Ethics Instruction ◽  
The Status

The status of cosmology

2002 ◽  
Vol 110 (2) ◽  
pp. 9-15 ◽  
Author(s):  
W Freedman
Keyword(s):  
The Status

Multicultural Assessment of Personality and Psychopathology in the United States: Still Art, Not Yet Science, and Controversial

1998 ◽  
Vol 14 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Richard H. Dana
Keyword(s):  
United States ◽  
Racial Identity ◽  
The United States ◽  
Therapeutic Assessment ◽  
Culturally Competent ◽  
Research Attention ◽  
The Status ◽  
Training Research ◽  
Multicultural Assessment ◽  
Personality Description

This paper describes the status of multicultural assessment training, research, and practice in the United States. Racism, politicization of issues, and demands for equity in assessment of psychopathology and personality description have created a climate of controversy. Some sources of bias provide an introduction to major assessment issues including service delivery, moderator variables, modifications of standard tests, development of culture-specific tests, personality theory and cultural/racial identity description, cultural formulations for psychiatric diagnosis, and use of findings, particularly in therapeutic assessment. An assessment-intervention model summarizes this paper and suggests dimensions that compel practitioners to ask questions meriting research attention and providing avenues for developments of culturally competent practice.

The Status of Psychiatric Research

1962 ◽  
Vol 7 (4) ◽  
pp. 156-156
Author(s):  
C. SHAGASS
Keyword(s):  
Psychiatric Research ◽  
The Status

A Perspective on the Status of Social Psychology

1990 ◽  
Vol 35 (10) ◽  
pp. 982-983
Author(s):  
Gail M. Williamson
Keyword(s):  
Social Psychology ◽  
The Status
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