scholarly journals Surface Charge Effects on Adsorption of Solutes by Poplar and Elm Biochars

2021 ◽  
Vol 7 (1) ◽  
pp. 11
Author(s):  
Steven C. Peterson ◽  
Sanghoon Kim ◽  
Jason Adkins
Keyword(s):  
Growth Rate ◽  
Activated Carbon ◽  
Water Purification ◽  
Rapid Growth ◽  
Tree Species ◽  
Pyrolysis Temperature ◽  
Adsorption Efficiency ◽  
Charge Effects ◽  
Rapid Growth Rate ◽  
Filtration Medium

Elm and poplar are two tree species that can provide a large amount of low-value feedstock for biochar production due to their rapid growth rate (poplar), and susceptibility to disease and/or infestation (both elm and poplar). Biochar has been studied recently as filtration medium for water purification, as it provides a renewable alternative to activated carbon. In this work, the adsorption efficiency of biochars made from elm and poplar as a function of pyrolysis temperature were studied by ultraviolet (UV) adsorption of dyes with positive, neutral, and negative charges to determine what factors had the greatest effect on adsorption of these dyes. It was found that conductivity of the biochars increased with pyrolysis temperature, and that this factor was more important than surface area in terms of adsorbing charged dyes. Both elm and poplar biochars were not effective in adsorbing neutral dyes. This research demonstrates that elm and poplar biochars adsorb charged (either positively or negatively) solutes more efficiently than uncharged ones because they carry both charges themselves. Therefore, these biochars would make excellent candidates as renewable filtration media for charged contaminants.

scholarly journals An assessment of Brazilian conservation units – a second look

2012 ◽  
Vol 15 (1) ◽  
Author(s):  
José Augusto Leitão Drummond ◽  
José Luiz De Andrade Franco ◽  
Daniela De Oliveira
Keyword(s):  
Growth Rate ◽  
Protected Areas ◽  
National Parks ◽  
Rapid Growth ◽  
Sustainable Use ◽  
Conservation Unit ◽  
Conservation Units ◽  
Unit System ◽  
Rapid Growth Rate ◽  
Fourth Position

This is a second overview of the Brazilian conservation unit system for mid-2010. It updates author et al, 2009. It examines six dimensions of federal and state protected areas – age, numbers, types of units, absolute and average sizes, distribution by states and biomes, and degree of compliance with CBD-inspired goals. Major findings: (i) the system maintained a rapid growth rate; (ii) national parks and national forests are the most prominent units; (iii) distribution of units by region and biome remains unbalanced; (iv) state units grew remarkably over the last five years; (v) state units are biased towards sustainable use; (vi) sustainable use units grew more than fully protected units; (vii) Amazonia remains the most extensively protected biome; and (viii) quantitative goals of biome protection are closer to being reached. In 2010 Brazil held the fourth position globally in protected areas; it created the largest number of units between 2000 and 2010; it has the largest combined area of protected tropical formations. However, several regions and biomes remain under protected. 

scholarly journals Meagre (Argyrosomus regius Asso, 1801) aquaculture in Croatia

2016 ◽  
Vol 74 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Nikolina Kružić ◽  
Bosiljka Mustać ◽  
Ivan Župan ◽  
Slavica Čolak
Keyword(s):  
Growth Rate ◽  
Rapid Growth ◽  
Adriatic Sea ◽  
Current Status ◽  
Migratory Fish ◽  
Important Species ◽  
Argyrosomus Regius ◽  
Rapid Growth Rate ◽  
Interesting Candidate ◽  
Year 2000

Abstract The objective of this review is to present current status of meagre aquaculture in Croatia. Meagre Argyrosomus regius (Asso, 1801) is a fast growing migratory fish species which used to be widespread along the coast of the Adriatic Sea. Today, it is very rare in fisheries catches and is considered highly endangered. Recently, meagre has become an increasingly important species in the Mediterranean aquaculture. In Croatia, meagre is a relatively new cultured species whose farming started after the year 2000. Since the European Commission identified species diversification as a top priority in the framework of the 2020 strategies for Aquaculture, and with recent studies revealing that meagre adapt easily to captivity and maintain a rapid growth rate, this species became an interesting candidate for Croatian as well as Mediterranean aquaculture.

scholarly journals Selection for Rapid Growth Rate in Chickens

1963 ◽  
Vol 42 (6) ◽  
pp. 1393-1397 ◽  
Author(s):  
R. George Jaap
Keyword(s):  
Growth Rate ◽  
Rapid Growth ◽  
Rapid Growth Rate ◽  
Selection For

scholarly journals Hybridomas for production of monoclonal antibodies to human erythropoietin

Blood ◽  
1984 ◽  
Vol 64 (2) ◽  
pp. 357-364 ◽  
Author(s):  
S Yanagawa ◽  
S Yokoyama ◽  
K Hirade ◽  
R Sasaki ◽  
H Chiba ◽  
...  
Keyword(s):  
Monoclonal Antibody ◽  
Growth Rate ◽  
Monoclonal Antibodies ◽  
Mechanism Of Action ◽  
Rapid Growth ◽  
Human Erythropoietin ◽  
Rapid Growth Rate ◽  
Blotting Technique ◽  
Purification Methods ◽  
High Production

Abstract Human urinary erythropoietin has been highly purified by a combination of conventional purification methods and immunoadsorbent columns packed with hybridoma-produced antibodies against contaminants that seemed difficult to separate from erythropoietin by the usual means. By using the partially purified erythropoietin as an antigen, three hybridoma clones have been obtained that secrete monoclonal antibodies against erythropoietin. One of the clones has been quite stable, with a rapid growth rate and high production of antibody. Western blotting technique with monoclonal antibodies revealed occurrence of two species of erythropoietin. The monoclonal antibody will be useful as a probe for the purification of erythropoietin and for further studies of the hormone and its mechanism of action.

scholarly journals Errata

1948 ◽  
Vol 46 (3) ◽  
pp. 349-349
Keyword(s):  
Growth Rate ◽  
Methyl Bromide ◽  
Rapid Growth ◽  
White Rats ◽  
Body Weights ◽  
Rapid Growth Rate ◽  
Average Body

The Toxicity of Methallyl Chloride and Methyl Bromide towards White RatsBy N. van Tiel, 46, No. 2, p. 217p. 219, column 1, lines 9–11 should read:“The effect of the several gassings upon those rats which survived was studied during and after treatment.”p. 220, column 1, lines 12–16 should read:“This rapid growth rate diminished the differences between the average body weights of the treated and untreated rats.”

THE SPECIFIC EFFECTS OF MONOCHROMATIC LIGHT ON THE GROWTH OF YEAST

1930 ◽  
Vol 2 (4) ◽  
pp. 249-263 ◽  
Author(s):  
A. H. Hutchinson ◽  
Dorothy Newton
Keyword(s):  
Growth Rate ◽  
Rapid Growth ◽  
Monochromatic Light ◽  
Visible Spectrum ◽  
Ultra Violet ◽  
Light Stimulation ◽  
Specific Effects ◽  
Rapid Growth Rate ◽  
Sudden Transition

An isolated strain of Yeast, derived from Fleischman's preparation, when exposed to monochromatic light responds quite differently to light of different wave-lengths. Slight retardation in growth by red and orange light, stimulation by yellow and green, and increasingly marked retardation in the blue and violet, characterize the effects of the mercury lines of the visible spectrum. There is a sudden transition to stimulation in the near ultra-violet. (λ 3984 Å). Stimulation continues at λ 3650 Å and characterises the region λ 2894 Å to λ 2700 Å, but otherwise the lines employed in this investigation retard growth.Generally the effect either of stimulation or retardation is greater when the control is one of rapid growth rate, but the reverse is the case at the red end of the visible spectrum.

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