scholarly journals Short ingestion tests as alternative proposal for conventional range finding assays with Thamnocephalus platyurus and Brachionus calyciflorus

2011 ◽  
Vol 8 (4) ◽  
pp. 687-694 ◽  
Author(s):  
G. Nałęcz Jawecki ◽  
Ł. Szczęsny ◽  
D. Solecka ◽  
J. Sawicki
Keyword(s):  
Brachionus Calyciflorus ◽  
Range Finding ◽  
Thamnocephalus Platyurus ◽  
Alternative Proposal

Linear perspective as a source of psychological error in binocular range finding.

1952 ◽  
Author(s):  
E. A. Alluisi ◽  
G. S. Harker
Keyword(s):  
Linear Perspective ◽  
Range Finding

PHYTOCHEMICAL SCREENING AND LARVICIDAL EFFECT EVALUATION OF AZADIRACHTA INDICA (L) LEAF EXTRACT ON DERMESTES MACULATUS (DE GEER, 1774) INFESTATION OF SMOKED CLARIAS GARIEPINUS (BURCHELL, 1822)

2020 ◽  
Vol 4 (2) ◽  
pp. 41-45
Author(s):  
Sadam Sulaiman Indabo ◽  
Rufai Zakari
Keyword(s):  
Azadirachta Indica ◽  
Leaf Extract ◽  
Standard Procedure ◽  
Clarias Gariepinus ◽  
Phytochemical Screening ◽  
Range Finding ◽  
Dermestes Maculatus ◽  
Randomized Design ◽  
Fish Samples ◽  
Initial Source

Dermestes maculatus is a major pest of stored fish in Nigeria, fish is preserved with highly persistent synthetic chemicals. There have been an increasing effort at developing plant-based toxicants that are environmentally friendly. Therefore, this study was conducted to screen the leaf extract of Azadirachta indica for phytochemical constituents. The efficacy of the methanolic leaf extract of the plant against D. maculatus was also evaluated. The leaves of A. indica were obtained, processed and taken to laboratory for methanolic extraction. Phytochemical screening was carried out to identify saponins, flavonoids, alkaloids, tannins, steroids, cardiac glycosides, glycosides, triterpenes and carbohydrates using standard procedure.  Both clean and infested samples of smoke-dried Clarias gariepinus were purchased from Sabon Gari Market, Zaria. The infested samples were used as initial source of D. maculatus larvae. Range finding test was carried out prior to the bioassay. During the bioassay, clean un-infested fish samples were weighed and introduced into kilner jars and respective dosages of 0.2g, 0.4g, 0.6g and 0.8g of extract were added. Another set of fish samples without the extract were maintained as control. The experiment was arranged in Completely Randomized Design with three replicates. Fifteen larvae of D. maculatus were introduced into both treated and control containers and covered. Mortality was recorded after 24, 48, 72 and 96 hours. Data obtained revealed an increase in mortality with increasing dose and time. Mortality ranged from 1.67 to 11.00. Therefore, leaf extract of A. indica should be incorporated in the development of larvicide against D. maculatus.   

Range Finding and Fault Locating with Chaotic Signal

2014 ◽  
Vol 1 ◽  
pp. 458-461
Author(s):  
An-Bang Wang ◽  
Tong Zhao ◽  
Hang Xu ◽  
Na Wang ◽  
Yun-Cai Wang
Keyword(s):  
Chaotic Signal ◽  
Range Finding ◽  
Fault Locating

TAXONOMICAL STATUS OF TWO BRACHIONUS CALYCIFLORUS MORPHOTYPES IN LAKE LIANTANG BASED ON ITS SEQUENCE

2010 ◽  
Vol 36 (5) ◽  
pp. 935-942 ◽  
Author(s):  
Jin-Yan ZHANG ◽  
Yi-Long XI ◽  
Qin MA ◽  
Xian-Ling XIANG
Keyword(s):  
Brachionus Calyciflorus ◽  
Taxonomical Status

The Trends of Improving of Passive Type Optical Range Finding device

2017 ◽  
Vol 68 (8) ◽  
pp. 30-37
Author(s):  
A.V. Medvedev ◽  
A.V. Grinkevich ◽  
S.N. Knyazeva
Keyword(s):  
Optical Range ◽  
Range Finding

Lethal effects and ultrastructure of cellular uptake of ingested gold nanoparticles in the freshwater rotifer Brachionus calyciflorus (Monogononta: Brachionidae)

2021 ◽  
pp. 117897
Author(s):  
Julia R. Geppert ◽  
Pascal Buhani ◽  
Katharina Al-Shamery ◽  
Olaf R.P. Bininda-Emonds ◽  
Wilko H. Ahlrichs
Keyword(s):  
Gold Nanoparticles ◽  
Cellular Uptake ◽  
Brachionus Calyciflorus ◽  
Lethal Effects ◽  
Rotifer Brachionus Calyciflorus

Glutamic Acid Uptake Inhibition Assay in Cultured Hep G2 Cells as an Alternative Method for Evaluating Potential In Vivo Eye Irritation

1989 ◽  
Vol 16 (4) ◽  
pp. 344-352
Author(s):  
Paul J. Dierickx
Keyword(s):  
Glutamic Acid ◽  
Corneal Opacity ◽  
Acid Uptake ◽  
Hep G2 ◽  
Hep G2 Cells ◽  
Eye Irritation ◽  
Uptake Inhibition ◽  
Range Finding ◽  
G2 Cells

Glutamic acid (GA) content was measured in cultured Hep G2 cells, after treatment of the cells with test compounds. The results with 37 chemicals were compared with their respective rabbit eye irritation data, of which 17 were determined according to the OECD test, and the other 20 in range-finding studies. The chemicals were mainly organic solvents (alcohols, esters, amines, acids and others). The xenobiotics were applied to the cells for 4 hours at 5 different concentrations. The cells were then incubated for 15 minutes with tritiated GA. GA uptake inhibition was measured by liquid scintillation counting, and the results were expressed as the GI50 value, which is the concentration of test compound required to induce a 50% reduction in GA uptake. A linear correlation coefficient r = 0.66 was found between the log GI50 and the mean corneal opacity scores. This value is comparable to that obtained in total protein and uridine uptake inhibition studies. However, r = 0.81 was found when the log GI50 was compared with range-finding scores, indicating that a closer relationship exists between cytotoxicity and the latter.

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