Predicting chronic lethality of chemicals to fishes from acute toxicity test data: Theory of accelerated life testing

1995 ◽  
Vol 14 (10) ◽  
pp. 1745-1752 ◽  
Author(s):  
Kai Sun ◽  
Gary F. Krause ◽  
Foster L. Mayer ◽  
Mark R. Ellersieck ◽  
Asit P. Basu
Keyword(s):  
Acute Toxicity ◽  
Test Data ◽  
Toxicity Test ◽  
Accelerated Life Testing ◽  
Acute Toxicity Test ◽  
Life Testing ◽  
Accelerated Life

Predicting chronic lethality of chemicals to fishes from acute toxicity test data: Multifactor probit analysis

1995 ◽  
Vol 14 (2) ◽  
pp. 345-349 ◽  
Author(s):  
Gunhee Lee ◽  
Mark R. Ellersieck ◽  
Foster L. Mayer ◽  
Gary F. Krause
Keyword(s):  
Acute Toxicity ◽  
Test Data ◽  
Toxicity Test ◽  
Probit Analysis ◽  
Acute Toxicity Test

scholarly journals Life Prediction on a T700 Carbon Fiber Reinforced Cylinder with Limited Accelerated Life Testing Data

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Ma Xiaobing ◽  
Zhang Yongbo
Keyword(s):  
Carbon Fiber ◽  
Test Data ◽  
Life Prediction ◽  
Rupture Life ◽  
Accelerated Life Testing ◽  
Accelerated Life Test ◽  
Life Testing ◽  
Life Test ◽  
Failure Data ◽  
Accelerated Life

An accelerated life testing investigation was conducted on a composite cylinder that consists of aluminum alloy and T700 carbon fiber. The ultimate failure stress predictions of cylinders were obtained by the mixing rule and verified by the blasting static pressure method. Based on the stress prediction of cylinder under working conditions, the constant stress accelerated life test of the cylinder was designed. However, the failure data cannot be sufficiently obtained by the accelerated life test due to the time limitation. Therefore, most of the data presented to be high censored in high stress level and zero-failure data in low stress level. When using the traditional method for rupture life prediction, the results showed to be of lower confidence. In this study, the consistency of failure mechanism for carbon fiber and cylinder was analyzed firstly. According to the analysis result, the statistical test information of carbon fiber could be utilized for the accelerated model constitution. Then, rupture life prediction method for cylinder was proposed based on the accelerated life test data and carbon fiber test data. In this way, the life prediction accuracy of cylinder could be improved obviously, and the results showed that the accuracy of this method increased by 35%.

ACCELERATED LIFE TESTING OF COMPONENTS OF NUCLEAR RESEARCH REACTORS

2016 ◽  
Author(s):  
Vanderley Vasconcelos ◽  
WELLINGTON SOARES ◽  
Antonio Carlos Lopes da Costa ◽  
Raíssa Oliveira Marques
Keyword(s):  
Nuclear Research ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Research Reactors ◽  
Accelerated Life

Effects of atrazine and alachlor on self-purification processes in receiving streams

1996 ◽  
Vol 33 (6) ◽  
pp. 181-187 ◽  
Author(s):  
Jana Zagorc-Koncan
Keyword(s):  
Adverse Effect ◽  
Acute Toxicity ◽  
Toxicity Test ◽  
Chronic Toxicity ◽  
Acute Toxicity Test ◽  
Organic Substances ◽  
Inhibiting Effect ◽  
Scenedesmus Subspicatus ◽  
Net Assimilation ◽  
Chlorophyll A Content

In recent years many waterways in Slovenia have been subjected to an increased loading with pesticides due to intensification of agriculture. The most widely used herbicides are atrazine and alachlor and they were detected in some rivers and even in ground water. Therefore the effects of atrazine and alachlor on selfpurification processes were investigated. The basic selfpurification processes studied were biodegradation of organic substances and photosynthesis and growth of algae. The inhibiting effect of pesticides on the process of biodegradation of organic pollutants was evaluated by the use of laboratory river model and mathematical modelling. The harmful impacts of pesticides on aquatic autotrophic organisms were assessed by measurement of net assimilation inhibition (24-h acute toxicity test) as well as growth inhibition - chlorophyll- a content (72-h chronic toxicity test) of algae Scenedesmus subspicatus. The results obtained demonstrate that atrazine and alachlor in concentrations found in our rivers have practically no effect on biodegrading heterotrophic organisms, while their adverse effect on algae is quite considerable.

scholarly journals Dying for change: A roadmap to refine the fish acute toxicity test after 40 years of applying a lethal endpoint

2021 ◽  
Vol 223 ◽  
pp. 112585
Author(s):  
Ioanna Katsiadaki ◽  
Tim Ellis ◽  
Linda Andersen ◽  
Philipp Antczak ◽  
Ellen Blaker ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Toxicity Test ◽  
Acute Toxicity Test
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