The use of an Allonais inaequalis reproduction test as an ecotoxicological bioassay

Lignocellulosic bioethanol production results in huge amounts of stillage, a potentially polluting by-product. Stillage, rich in heavy metals and, mainly, inhibitors, requires specific toxicity studies to be adequately managed. To this purpose, we applied an FTIR ecotoxicological bioassay to evaluate the toxicity of lignocellulosic stillage. Two weak acids and furans, most frequently found in lignocellulosic stillage, have been tested in different mixtures against three Saccharomyces cerevisiae strains. The metabolomic reaction of the test microbes and the mortality induced at various levels of inhibitor concentration showed that the strains are representative of three different types of response. Furthermore, the relationship between concentrations and FTIR synthetic stress indexes has been studied, with the aim of defining a model able to predict the concentrations of inhibitors in stillage, resulting in an optimized predictive model for all the strains. This approach represents a promising tool to support the ecotoxicological management of lignocellulosic stillage.

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Ceriodaphnia survival/reproduction test

10.2172/5223408 ◽

1989 ◽

Keyword(s):

Reproduction Test

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F/H Area ETF effluent (H-016 Outfall) ceriodaphnia survival/reproduction test, Test date: September 18, 1990

10.2172/5083560 ◽

1991 ◽

Author(s):

W.L. Specht

Keyword(s):

Reproduction Test

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Rapid ecotoxicological bioassay using delayed fluorescence in the green alga Pseudokirchneriella subcapitata

Water Research ◽

10.1016/j.watres.2006.07.016 ◽

2006 ◽

Vol 40 (18) ◽

pp. 3393-3400 ◽

Cited By ~ 39

Author(s):

Masakazu Katsumata ◽

Takashi Koike ◽

Masataka Nishikawa ◽

Kimiko Kazumura ◽

Hiroshi Tsuchiya

Keyword(s):

Green Alga ◽

Delayed Fluorescence ◽

Pseudokirchneriella Subcapitata ◽

Ecotoxicological Bioassay

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Methodologische en Praktische Moeilijkheden bij Het Onderzoek Naar De Verwerving Van Het Nederlands Door Volwassen Buitenlanders

Toegepaste Taalwetenschap in Artikelen ◽

10.1075/ttwia.4.07hul ◽

1978 ◽

Vol 4 ◽

pp. 88-109

Author(s):

Jan H. Hulstijn

Keyword(s):

Research Question ◽

A Priori ◽

Point Of View ◽

Choice Test ◽

Production Test ◽

Linguistic System ◽

Reproduction Test ◽

Preliminary Study ◽

The Stability ◽

Reproduction Tests

In the first and second section of this paper some methodological topics in the study of interlanguage (IL) and error analysis are discussed. The author adheres to Adjemian's point of view (1976): any interlanguage is a natural language and contains a linguistic system. Its systematicity is therefore given a priori. However, not all utterances of an IL speaker might be consistent: some rules of the system might be unstable over a certain period of time. Research would have to show what performance strategies (like simplification) influence the stability of the system, in other words in what way the consistency of the system is permeable. In the third section a preliminary study is presented dealing with the topic of inconsistency in IL. The research question was: to what extent can the inconsistency in the learners' utterances be accounted for by distinguishing different kinds of performance? To nineteen adult foreigners in Holland, with 15 different mother tongues, all partici-pating in an intensive Dutch course for beginners, eight tests ^licitation procedures) were administered: two reproduction tests, four production tests and two "intuition tests" (see table I). Eight rules of Dutch syntax and morfology were tested, (table II). Results show that: (a) if someone makes one or more errors with a particular rule in a reproduction test, he will make one or more errors with the same rule in a production test and an intuition test as well: the reverse is not true; (b) if someone makes one or more errors with a particular rule in a production test, he will make one or more errors with the same rule in an intuition test as well; the reverse is not true; (c) the overlap in errors/correct forms was greatest with both repro-duction tests. Of the production tests translation and the anagram test were almost equally representative for the four tests. Finally, there was no congruence between both "intuition tests", the sentence correc-tion test yielding consistently more errors (for all eight rules) than the multiple choice test.

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Optimal design of an electrical connector intermittent fault–accelerated reproduction test based on a genetic algorithm

Proceedings of the Institution of Mechanical Engineers Part O Journal of Risk and Reliability ◽

10.1177/1748006x19838680 ◽

2019 ◽

Vol 233 (5) ◽

pp. 857-867

Author(s):

Zunqing Zhu ◽

Qian Li ◽

Yong Zhang ◽

Guanjun Liu ◽

Jing Qiu ◽

...

Keyword(s):

Genetic Algorithm ◽

Fault Diagnosis ◽

Optimal Design ◽

Intermittent Faults ◽

Damage Models ◽

Intermittent Fault ◽

Electrical Connector ◽

Reproduction Test ◽

Low Efficiency ◽

Reproduction Efficiency

The intermittent fault of an electrical connector is a latent threat to the reliability of an electromechanical system. For electrical connector intermittent fault diagnosis, an intermittent fault must be reproduced. Reproducing an intermittent fault by a traditional test has a low efficiency and adds some damage to the product, which is not conducive to intermittent fault diagnosis. To further improve the reproduction efficiency of an intermittent fault and reduce the damage, optimal design of a step-stress-accelerated intermittent fault reproduction test is carried out. First, the number of intermittent faults and the degree of damage in the reproduction test are estimated, and reproduction and damage models of an intermittent fault during the step-stress reproduction test are constructed. Then, based on the intermittent fault and damage models, an optimized method based on a genetic algorithm is established. Finally, the validity and applicability of the theoretical model and the optimized method of the step-stress-accelerated test based on a genetic algorithm are verified by comparing data from a contrast test.

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