Average P and PKP Codas for Earthquakes

Sweetser, E.I.; Cohen, Theodore J.; Tillman, M. F.

doi:10.21236/ada004960

Cited by 4 publications

(4 citation statements)

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“…At the present time the strongest evidence supports the general observation that BAS-145138, when applied to corn, enhances the m etabolism o f sulfonylurea and imidazolinone herbicides [7,9].…”

Section: Discussionsupporting

confidence: 83%

“…Rubin and Casida [12] suggested that the increase in ALS activi ty was sufficient to partially counter the herbicidal effect o f chlorsulfuron. However, other studies by Sweetser [7] on the metabolism of sulfonylureas and by Barrett and Olson [9] on imidazolinones in dicate that safeners protect corn from these herbi cides by enhancing their metabolism.…”

Section: Discussionmentioning

confidence: 99%

“…Parker et al [2] were the first to observe a safening effect on a sulfonylurea herbicide when they were able to show that naphthalic anhydride (naphthalene-1,8-dicarboxylic acid anhydride) could partially pro tect corn (Zea mays L.) from chlorsulfuron [3][4][5][6][7], In addition, Hatzios [4] found that the oxime safeners, cyometrinil {(Z)-a[(cyanomethoxy)imino]benzeneacetonitrile} and CGA-92194 {a-[( 1,3-dioxolan-2-yl-methoxy)-imino]benzeneacetonitrile}, could protect grain sorghum (Sor ghum bicolor (L.) Moench) from chlorsulfuron damage, but not as effectively as naphthalic anhy dride. Devlin and Zbiec [8] showed that the safener BAS-145138 [1 -dichloroacetyl- (4,6-…”

Section: Introductionmentioning

confidence: 99%

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Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Devlin¹,

Zbiec²

1991

Zeitschrift Für Naturforschung C

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This study demonstrates that corn can be partially safened by BAS-145138 against sulfonylurea and imidazolinone herbicides. The corn seeds were impregnated with BAS-145138 by soaking the seeds for 6 h in solutions of the safener. BAS-145138 had no effect on corn growth. However, corn shoot and root growth in length, fresh weight, and dry weight was partially protected by BAS-145138 from the phytotoxic effects of the sulfonylurea herbicides thiameturon and CGA -136872. Similar protection was given to corn against the phytotoxic activity of the imidazolinone herbicides imazapyr, imazaquin, and imazethapyr. This study suggests that corn could be safened with BAS-145138 against the phytotoxic effects of residual amounts of sulfonylurea and imidazolinone herbicides found in rotations take place.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Devlin¹,

Zbiec²

1991

Zeitschrift Für Naturforschung C

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“…Methyl viologen can be photoreduced by irradiation with visible light in the presence of the photosensitizer proflavine and EDTA as the electron donor (Sweetser 1967). Under continuous illumination, platinum catalysed the evolution of substantial quantities of hydrogen from this system for up to 24 h. EDTA could be replaced by cysteine, glutathione, mercaptoethanol or dithiothreitol (table 1).…”

mentioning

confidence: 99%

Photolysis of water for H ₂ production with the use of biological and artificial catalysts

Hall

Adams

Morris

et al. 1980

Phil. Trans. R. Soc. Lond. A

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An aqueous mixture of chloroplasts, hydrogenase and an electron transfer catalyst on illumination liberates H 2 , the source of the H atoms being water. The rate and duration of H 2 production from such a system depends on the stability of chloroplast and hydrogenase activities in light and oxygen. Both chloroplasts and hydrogenases can be stabilized to a certain degree by immobilization in gels or by incubation in bovine serum albumin. Natural electron carriers of hydrogenases are ferredoxin, cytochrome c 3 and NAD. Viologen dyes and synthetic iron-sulphur particles (Jeevanu) can substitute for the biological carriers. Methyl viologen, photoreduced in the presence of chloroplasts, can liberate H 2 in combination with Pt (Adam’s catalyst). An aqueous solution of proflavine can be photoreduced in the presence of organic electron donors such as EDTA, cysteine, dithiothreitol, etc.; the reduced proflavine can subsequently liberate H 2 with MV-Pt, MV-hydrogenase, ferredoxin-hydrogenase or cytochrome-hydrogenase systems.

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Evidence consistent with a multiple‐event mechanism for large earthquakes

Sweetser¹,

Cohen²

1974

Geophysical Research Letters

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We analyzed the short‐period codas of 418 small events (NOS mb ≤ 5.8) and 148 large‐events (NOS mb, NOS Ms, or mb from Pasadena or Berkeley ≥7.0). The normalized large‐event codas are found to be significantly larger at any given time after the first‐arrival onset than corresponding values for small‐event codas. This suggests that large events are multiple events, and that the occurrence of later events in a given sequence retards coda decay and elevates the relative amplitudes of the codas above those expected for a small (single) event. Large events are also found to be emergent, displaying a 0.2 to 0.3 mb increase in amplitude between 5 and 30 seconds after the P wave arrival over that observed in the first 5 seconds after the arrival. Coda decay characteristics for large events may be used to estimate the length of the fault zone. We suggest that multiple events are a more common phenomenon than has been generally suspected, and that most if not all events of high or intermediate Ms are probably multiple events.

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Average P and PKP Codas for Earthquakes

Cited by 4 publications

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Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Photolysis of water for H ₂ production with the use of biological and artificial catalysts

Evidence consistent with a multiple‐event mechanism for large earthquakes

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Average P and PKP Codas for Earthquakes

Cited by 4 publications

References 0 publications

Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Influence of BAS-145138 on the Activity of Sulfonylurea and Imidazolinone Herbicides

Photolysis of water for H 2 production with the use of biological and artificial catalysts

Evidence consistent with a multiple‐event mechanism for large earthquakes

Contact Info

Product

Resources

About

Photolysis of water for H ₂ production with the use of biological and artificial catalysts