Preserved Sections of Steppes as the Basis for the Future Ecological Framework of Belgorod Oblast

2020 ◽  
Vol 10 (1) ◽  
pp. 36-43
Author(s):  
A. A. Tishkov ◽  
E. A. Belonovskaya ◽  
N. I. Zolotukhin ◽  
S. V. Titova ◽  
N. G. Tsarevskaya ◽  
...  
2020 ◽  
Vol 10 (12) ◽  
pp. 394
Author(s):  
Chiara Borelli ◽  
Alessandra Gigli ◽  
Giannino Melotti

In these times of global crisis caused by COVID-19, there is an urgent need to address the topic of nature-based experiences in education: the pandemic has strongly highlighted both the interdependence between human beings and nature, and the need for mending the dichotomic vision that keeps them separate. Experiential education in natural contexts within an ecological framework might have a strategic role in this crucial period to develop anthropologic, civic, and dialogic conscience (Morin, 2001). Through this study, CEFEO Research Center had the objective of investigating the socio-economic impact of COVID-19 on Italian nature-based programs in the educational, therapeutic, training, and leisure areas. From 28 May to 19 June 2020, an online questionnaire was distributed with the purpose of understanding the socio-economic impact of the pandemic on nature-based programs during the lockdown period and during the period of first reopening, and the related needs and new opportunities for the future. The results highlight a paradox: the COVID-19 crisis has caused more problems for a sector which was already suffering from a lack of funding and of social and institutional acknowledgment. Many agencies working in the field lost months of income and numerous working days, and they are uncertain about the future: they are having difficulties surviving in a moment when we need them more.


2012 ◽  
Vol 132 (6) ◽  
pp. 313-319 ◽  
Author(s):  
Phil Hanlon ◽  
Sandra Carlisle ◽  
Margaret Hannah ◽  
Andrew Lyon ◽  
David Reilly

1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).


1978 ◽  
Vol 48 ◽  
pp. 387-388
Author(s):  
A. R. Klemola
Keyword(s):  

Second-epoch photographs have now been obtained for nearly 850 of the 1246 fields of the proper motion program with centers at declination -20° and northwards. For the sky at 0° and northward only 130 fields remain to be taken in the next year or two. The 270 southern fields with centers at -5° to -20° remain for the future.


Author(s):  
Godfrey C. Hoskins ◽  
Betty B. Hoskins

Metaphase chromosomes from human and mouse cells in vitro are isolated by micrurgy, fixed, and placed on grids for electron microscopy. Interpretations of electron micrographs by current methods indicate the following structural features.Chromosomal spindle fibrils about 200Å thick form fascicles about 600Å thick, wrapped by dense spiraling fibrils (DSF) less than 100Å thick as they near the kinomere. Such a fascicle joins the future daughter kinomere of each metaphase chromatid with those of adjacent non-homologous chromatids to either side. Thus, four fascicles (SF, 1-4) attach to each metaphase kinomere (K). It is thought that fascicles extend from the kinomere poleward, fray out to let chromosomal fibrils act as traction fibrils against polar fibrils, then regroup to join the adjacent kinomere.


Author(s):  
Nicholas J Severs

In his pioneering demonstration of the potential of freeze-etching in biological systems, Russell Steere assessed the future promise and limitations of the technique with remarkable foresight. Item 2 in his list of inherent difficulties as they then stood stated “The chemical nature of the objects seen in the replica cannot be determined”. This defined a major goal for practitioners of freeze-fracture which, for more than a decade, seemed unattainable. It was not until the introduction of the label-fracture-etch technique in the early 1970s that the mould was broken, and not until the following decade that the full scope of modern freeze-fracture cytochemistry took shape. The culmination of these developments in the 1990s now equips the researcher with a set of effective techniques for routine application in cell and membrane biology.Freeze-fracture cytochemical techniques are all designed to provide information on the chemical nature of structural components revealed by freeze-fracture, but differ in how this is achieved, in precisely what type of information is obtained, and in which types of specimen can be studied.


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