scholarly journals Comparative analysis of the anatomical structure of heartwood and sapwood selected Gymnocladus canadensis Lam. trees in Srpska Crnja

2011 ◽  
Vol 63 (3) ◽  
pp. 831-836
Author(s):  
Dragica Vilotic ◽  
Mirjana Sijacic-Nikolic ◽  
Danijela Miljkovic ◽  
Mirjana Ocokoljic ◽  
M. Rebic
Keyword(s):  
Comparative Analysis ◽  
North America ◽  
Anatomical Structure ◽  
Microscopic Structure ◽  
Capillary System

This paper shows the results obtained from the study of the macroscopic-microscopic structure (capillary system) in the growth stem of Gymnocladus canadensis Lam. originating from North America, which grows in ?Muzljanski rit? in the area of Srpska Crnja. Gymnocladus canadensis Lam. falls under the ring-porous species according to its porosity, with large tracheas in its early zone. The early zone trachea lumens, contained in the sapwood, reach dimensions of up to 160 ?m, while early zone trachea lumens in the growth stem rings of the sapwood reach dimensions of up to 120 ?m. Examination of the microscopic structure of this tree show good properties of the tree.

Comparative Analysis of Mourning Dove Population Change in North America

2010 ◽  
Vol 74 (5) ◽  
pp. 1059-1069 ◽  
Author(s):  
John R. Sauer ◽  
William A. Link ◽  
William L. Kendall ◽  
David D. Dolton
Keyword(s):  
Comparative Analysis ◽  
North America ◽  
Population Change ◽  
Mourning Dove

Comparative Colonialism and Collections-Based Archaeological Research

Museum Worlds ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 4-17 ◽  
Author(s):  
Julia A. King
Keyword(s):  
Comparative Analysis ◽  
North America ◽  
Early Modern ◽  
Chesapeake Bay ◽  
Indigenous People ◽  
Archaeological Research ◽  
Critical Dialogue ◽  
Good Shape ◽  
Archaeological Collections ◽  
Source Of Information

ABSTRACTLegacy collections are an increasingly valued source of information for researchers interested in the study and interpretation of colonialism in the Chesapeake Bay region of North America. Through the reexamination of 34 archaeological collections ranging in date from 1500 through 1720, researchers, including the author, have been able to document interactions among Europeans, Africans, and indigenous people in this part of the early modern Atlantic. We could do this only because we turned to existing collections; no single site could reveal this complex story. This article summarizes the major findings from this work and describes the pleasures and challenges of comparative analysis using existing collections. Collections-based research can also be used to inform fieldwork, so the legacy collections of tomorrow are in as good shape as possible. Indeed, collections-based work reveals the need for a critical dialogue concerning the methods, methodology, and ethics of both collections and field-based research.

scholarly journals Anatomical Structure of Polygonatum Mill. Species in the Precarpathian Region

2020 ◽  
Vol 7 (4) ◽  
pp. 53-65
Author(s):  
Nadia Riznychuk ◽  
Victoria Gniezdilova
Keyword(s):  
Northern Hemisphere ◽  
Leaf Blade ◽  
Anatomical Structure ◽  
Temperate Zone ◽  
Central Cylinder ◽  
Microscopic Structure ◽  
Primary Growth ◽  
Basic Functions

Polygonatum Mill. species are found in woods of the temperate zone of the Northern Hemisphere. There are four species growing in Ukraine, the most common of which is Polygonatum multiflorum (L.) All. In forest and shrub habitats are also widespread Polygonatum odoratum (Mill.) Druce., Polygonatum latifolium Desf. and Polygonatum verticillаtum (L.) All. Polygonatum species have rhizomes of the sympodial type. They are of a primary anatomical structure. In the primary growth of the stem, as well as rhizomes, there is the central cylinder (stele) and the cortex. The structure of the leaf blade is related to the performance of basic functions: photosynthesis, respiration and transpiration. The leaves are isolateral with a lighter adaxial and shaded abaxial sides. The leaf is covered with epidermis. Beneath the epidermis is chlorenchyma, which makes up the leaf pulp - mesophyll. The microscopic structure of Polygonatum multiflorum (L.) All. was studied. The anatomic description includes the characteristic of rhizomes, leaves and stems structure.

Ideas, Institutions and the Policies of Governments: a Comparative Analysis: Parts I and II

1973 ◽  
Vol 3 (3) ◽  
pp. 291-313 ◽  
Author(s):  
Anthony King
Keyword(s):  
Decision Making ◽  
Comparative Analysis ◽  
North America ◽  
Western Europe ◽  
Welfare States ◽  
Decision Making Processes

This paper is about the things governments do and why they do them. It is written in the belief that, while we know quite a lot about decision-making processes in individual countries, we do not know nearly enough about why the governments of different countries make different decisions and pursue different policies. The countries of North America and western Europe are often described as ‘welfare states’, the implication being that the governments of all of them do broadly similar things in broadly similar ways. As we shall see, however, these broad similarities conceal important, wide divergences. These divergences deserve to be explained.

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