Fast growth rates of polyethylene crystals grown at high temperatures: Concentration and molecular weight dependence

AbstractWith fast growth rates, broad halotolerance and the ability to thrive at high temperatures, algae in the genus Picochlorum are emerging as promising biomass producers. Recently, we isolated a remarkably productive strain, Picochlorum celeri, that attains > 40 g m−2 day−1 productivities using simulated outdoor light. To test outdoor productivities, Picochlorum celeri was cultivated in 820 L raceway ponds at the Arizona Center for Algae Technology and Innovation. Picochlorum celeri demonstrated the highest outdoor biomass productivities reported to date at this testbed averaging ~ 31 g m−2 day−1 over four months with a monthly (August) high of ~ 36 g m−2 day−1. Several single day productivities were > 40 g m−2 day−1. Importantly for sustainability, Picochlorum celeri achieved these productivities in saline water ranging from seawater to 50 parts per thousand sea salts, without any biocides or pond crashes, for over 143 days. Lastly, we report robust genetic engineering tools for future strain improvements.

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Faculty Opinions recommendation of The basis of antagonistic pleiotropy in hfq mutations that have opposite effects on fitness at slow and fast growth rates.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.717968833.793468475 ◽

2013 ◽

Author(s):

Deborah Charlesworth

Keyword(s):

Growth Rates ◽

Fast Growth ◽

Antagonistic Pleiotropy

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Interfacial Tension of Immiscible Polymer Blends: Temperature and Molecular Weight Dependence.

10.21236/ada192463 ◽

1988 ◽

Author(s):

S. H. Anastasiadis ◽

I. Gancarz ◽

J. T. Koberstein

Keyword(s):

Molecular Weight ◽

Interfacial Tension ◽

Polymer Blends ◽

Immiscible Polymer Blends ◽

Molecular Weight Dependence ◽

Immiscible Polymer

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Kinetic Modelling of Anionic Polymerization Involving a Dynamic Equilibrium between Two Growth Centres with Different Growth Rates

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19932349 ◽

1993 ◽

Vol 58 (10) ◽

pp. 2349-2361 ◽

Cited By ~ 5

Author(s):

Jaromír Jakeš

Keyword(s):

Molecular Weight ◽

Growth Rates ◽

Anionic Polymerization ◽

Dynamic Equilibrium ◽

Kinetic Modelling ◽

Polymerization Time ◽

Fast State ◽

Growth State ◽

In The Beginning ◽

Growth Centres

Kinetic modelling of the molecular weight distribution (MWD) of polymer obtained by an anionic polymerization with two types of growth centres in a dynamic equilibrium, having different growth rates and lifetimes comparable to the polymerization time, was made for low monomer conversions. On the basis of distribution of the growth centres according to the total time spent in the fast growth state, it was shown that MWD of the resulting polymer are mostly bimodal at the beginning of the polymerization and change to unimodal MWD at sufficiently high polymerization degrees depending on the equilibrization rate. When all centres are in the fast state in the beginning, MWD are essentially unimodal throughout. A hint of trimodality is observed in some cases, in an extent hardly detectable in real chromatograms. Hence, a polymodal MWD can be explained only when more than two growth centres with different growth rates are assumed.

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Molecular Weight Dependence of the Glass Transition Temperature (Tg)-Confinement Effect in Well-Dispersed Poly(2-vinyl pyridine)–Silica Nanocomposites: Comparison of Interfacial Layer Tg and Matrix Tg

Macromolecules ◽

10.1021/acs.macromol.0c01577 ◽

2020 ◽

Vol 53 (19) ◽

pp. 8725-8736

Author(s):

Tong Wei ◽

John M. Torkelson

Keyword(s):

Molecular Weight ◽

Glass Transition ◽

Transition Temperature ◽

Glass Transition Temperature ◽

Interfacial Layer ◽

Confinement Effect ◽

Silica Nanocomposites ◽

Molecular Weight Dependence ◽

Vinyl Pyridine

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Comparison of Aminocyclopyrachlor to Common Herbicides for Kudzu (Pueraria montana) Management

Invasive Plant Science and Management ◽

10.1614/ipsm-d-11-00024.1 ◽

2011 ◽

Vol 4 (4) ◽

pp. 419-426 ◽

Cited By ~ 15

Author(s):

Patrick J. Minogue ◽

Stephen F. Enloe ◽

Anna Osiecka ◽

Dwight K. Lauer

Keyword(s):

Growth Rates ◽

Groundwater Pollution ◽

Fast Growth ◽

Control Measures ◽

Volume Index ◽

Metsulfuron Methyl ◽

Herbicide Treatment ◽

Herbicide Treatments ◽

Repeated Applications ◽

Pueraria Montana

AbstractKudzu is an invasive perennial climbing vine characterized by fast growth rates and tolerance to control measures. Repeated applications with high rates of 2,4-D plus picloram provide effective kudzu control, but picloram use is not permitted in certain states due to groundwater pollution concerns. Studies were conducted in Alabama and Florida to compare kudzu control with aminocyclopyrachlor, a new herbicide, to control provided by aminopyralid, clopyralid, metsulfuron methyl, and picloram plus 2,4-D, which are common treatments for kudzu management. Two annual applications of the same herbicide treatment were evaluated for effects on kudzu cover, kudzu volume index, and cover of other vegetation. Aminocyclopyrachlor at 140 to 280 g ae ha−1 (2 to 4 oz ae ac−1) was as effective as the standard 4.48 kg ae ha−1 (4 lb ae ac−1) 2,4-D amine plus 1.2 kg ae ha−1 picloram for kudzu control. There were no differences in kudzu control among the three rates of aminocyclopyrachlor tested. Colonization by graminoids, forbs, and Rubus spp. at 2 yr was greatest for herbicides providing the best kudzu control: aminocyclopyrachlor, and 2,4-D plus picloram. Herbicide treatments were more effective in controlling kudzu at the Alabama location, but repeated annual applications for 2 yr did not completely eliminate kudzu with any treatment at either site.

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