What does sealing the border mean?
To close records by any type of fastening that must be broken before access can be obtained.
How border are defined?
A border is a real or artificial line that separates geographic areas. Borders are political boundaries. They separate countries, states, provinces, counties, cities, and towns. A border outlines the area that a particular governing body controls.
What is the meaning of porous in biology?
porous. / (ˈpɔːrəs) / adjective. permeable to water, air, or other fluids. biology geology having pores; poriferous.
What is meaning of porous in geography?
More specifically, porosity of a rock is a measure of its ability to hold a fluid. Mathematically, it is the open space in a rock divided by the total rock volume (solid and space). Permeability is a measure of the ease of flow of a fluid through a porous solid.
What is the meaning of porous material?
A porous material can be defined simply as any solid containing void space(s), i.e., space not occupied by the main framework of atoms that make up the structure of the solid.
What type of word is borders?
Borders can be a verb or a noun.
Are Borders common nouns?
In the US, it usually refers to the border between the US and Mexico….border Definitions and Synonyms
| singular | border |
|---|---|
| plural | borders |
What is a physical border?
In geography, boundaries separate different regions of Earth. A physical boundary is a naturally occurring barrier between two or more areas. Physical boundaries include oceans, cliffs, or valleys.
What is porous structure?
Pore structure is a general term used to describe the porosity, pore size, pore size distribution, and pore morphology of a porous medium. From: Titanium Powder Metallurgy, 2015.
What are porous solids?
Porous solids are, as a rule, characterized by a large surface to volume ratio, which means. that a large part of their atoms is at or close to the surface. Numerous remarkable properties. of solids with large surfaces result from this fact.
What is porous material made of?
Porous materials contain voids (or pores), either in isolation or interconnected to form complex networks of channels, which are filled with fluid under normal atmospheric conditions, e.g. air, liquid water, or air and water vapour.
What is an example of border?
The definition of a border is an edge or dividing line. An example of a border is the outside edges of a garden bed. An example of a border is a mat cut for a 5×7 photo to fit inside an 8×10 frame. An example of a border is Antler, North Dakota between the US and Canada.
How are borders drawn?
Borders are established through warfare, colonization, or mutual agreements between the political entities that reside in those areas; the creation of these agreements is called boundary delimitation.
Where is the word border?
mid-14c., bordure, in heraldry, “broad, colored band surrounding the shield,” from Old French bordeure “seam, edge of a shield, border,” from Frankish *bord or a similar Germanic source (compare Old English bord “side;” see board (n. 2)).
What is the meaning of natural borders?
A natural border is a border between states or their subdivisions which is concomitant with natural formations such as rivers or mountain ranges.
What is an example of porous?
If an object is porous, it has a great ability to hold fluid within itself. Sponges, wood, rubber, and some rocks are porous materials. In contrast, marble, glass, and some plastics are not porous and contain very few open pockets of air (or pores).