Laboratory Studies of Three-Lined Potato Beetle and Control with Various Insecticides1

1960 ◽  
Vol 53 (3) ◽  
pp. 480-481
Author(s):  
T. W. Kerr ◽  
C. E. Olney
Keyword(s):  
Laboratory Studies ◽  
Potato Beetle ◽  
And Control

Effects of Mellow and Frenetic Music and Stimulating and Relaxing Scents on Walking by Seniors

1995 ◽  
Vol 80 (2) ◽  
pp. 411-415 ◽  
Author(s):  
Nancy Becker ◽  
Catherine Chambliss ◽  
Cathy Marsh ◽  
Roberta Montemayor
Keyword(s):  
Beneficial Effect ◽  
White Noise ◽  
Factorial Design ◽  
Walking Distance ◽  
Senior Center ◽  
Laboratory Studies ◽  
Repetitive Tasks ◽  
And Control

Previous research has yielded an inconclusive picture of the effects of music and scent on walking. Few laboratory studies have detected a beneficial effect of music; olfactory research has shown performance is positively affected for repetitive tasks but not yet on walking. The influence of these two types of stimuli in efficiency of exercise among seniors was assessed by measuring distance walked on an indoor course. Using a 3 × 3 factorial design [mellow music in 4:4 time, frenetic music in 2:8 time, and white noise by stimulating, relaxing, and control scent conditions], each of 20 volunteers from a senior center received nine randomized, 90-sec. exercise trials. Walking distance was reduced by mellow music but unaffected by stimulating music; there was no effect of scent.

scholarly journals Efficacy of a novel topical combination of esafoxolaner, eprinomectin and praziquantel against ear mite (Otodectes cynotis) infestations in cats

Parasite ◽  
2021 ◽  
Vol 28 ◽  
pp. 26 ◽  
Author(s):  
Eric Tielemans ◽  
Joe Prullage ◽  
Otsuki Tomoko ◽  
Julian Liebenberg ◽  
Balázs Capári ◽  
...  
Keyword(s):  
Field Trial ◽  
Treated Group ◽  
Control Group ◽  
Laboratory Studies ◽  
Topical Formulation ◽  
Label Dose ◽  
The Usa ◽  
Ear Canals ◽  
And Control ◽  
Otodectes Cynotis

Esafoxolaner, a purified enantiomer of afoxolaner with insecticidal and acaricidal properties, is combined with eprinomectin and praziquantel, nematodicidal and cestodicidal compounds, in NexGard® Combo, a novel topical endectoparasiticide formulation for cats. The efficacy of this formulation was assessed against Otodectes cynotis in two laboratory studies conducted in South Africa and in the USA with local isolates, and in one field trial conducted in Europe. In each study, cats were randomly allocated to a placebo-treated control group and a novel formulation-treated group. In the laboratory studies, cats were treated at the minimum recommended dose; in the field trial, cats were treated at label dose. All included cats were diagnosed positive for O. cynotis prior to treatment by otoscopy. The main variable of efficacy was a comparison of the number of live O. cynotis collected in both ear canals of all cats in the treated and control groups, one month after treatment. Efficacy of the novel topical formulation exceeded 97% in the three studies. These studies demonstrated the high effectiveness of NexGard® Combo in cats for the treatment of O. cynotis infestations. No health abnormalities were attributed to the treatment in any of the studies.

The Formation and Control of Trihalomethanes in Water Treatment Processes

1983 ◽  
Vol 15 (S2) ◽  
pp. 103-123
Author(s):  
C J Peters ◽  
R Perry
Keyword(s):  
Laboratory Studies ◽  
Mechanism Of Formation ◽  
Model Compounds ◽  
Treatment Practice ◽  
Analytical Technique ◽  
Treatment Processes ◽  
Direct Aqueous Injection ◽  
And Control ◽  
Unstable Intermediate ◽  
Source Waters

The occurrence and formation of trihalomethanes in water supplies in relation to source waters and treatment practice are evaluated. Factors influencing their formation are discussed with reference to detailed laboratory studies involving humic and fulvic materials as well as model compounds. The influence of temperature, pH and chlorine dose is related to the rate and mechanism of formation of these compounds and a direct aqueous injection analytical technique is used to evaluate the significance of unstable intermediate compounds formed. Bromide levels in the source waters are related to the balance of trihalomethanes produced during chlorination.

scholarly journals Antifeedant Activity of Neo-clerodane Diterpenoids from Scutellaria Altissima Against Colorado Potato Beetle Larvae

2017 ◽  
Vol 12 (3) ◽  
pp. 1934578X1701200 ◽  
Author(s):  
Petko I. Bozov ◽  
Yoana P. Georgieva
Keyword(s):  
Leptinotarsa Decemlineata ◽  
Structural Features ◽  
Antifeedant Activity ◽  
Potato Leaf ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say ◽  
Clerodane Diterpenoids ◽  
And Control ◽  
First Time ◽  
Leaf Disks

Fourteen neo-clerodane diterpenoids isolated from Scutellaria altissima ( Lamiaceae) were tested for insect antifeedant activity against Leptinotarsa decemlineata Say. Potato leaf disks treated with small amounts of the compounds (concentration 1000, 100, 10 ppm) resulted in good to very good antifeedant activity. Clerodin (1), scutecyprin (11) and 11-epi-scutecolumnin C (12) showed strong feeding inhibition at 1000 ppm and exhibited significant antifeedant activity at a concentration of 100 ppm. Activity was established by calculating the feeding ratio (FR) between the consumed areas of treated disks (CTD) and control disks (CCD). For comparison, FR50 values were determined as the FR at a CCD of 50%. Structural features of the compounds associated with the changes in activity and structure-antifeedant activity relationships are discussed. For the first time the anti-feedant activity has been evaluated of neo-clerodane diterpenoids with an unusual R-configuration of the carbon atom C-11.

scholarly journals Evaluating the cytotoxicity of contact lens multi-purpose solutions in an in vitro lens system

2009 ◽  
Vol 68 (1) ◽  
Author(s):  
O. Matthew Oriowo
Keyword(s):  
Contact Lens ◽  
Fluorescence Emission ◽  
Laboratory Studies ◽  
Lens System ◽  
Experimental Exposure ◽  
Cytotoxic Effects ◽  
Laboratory Investigations ◽  
And Control ◽  
Reversible Reduction

Purpose: To investigate the relative cytotoxic effects of contact lens multipurpose solutions on cultured crystalline lenses.Methods: A comparison of the fluorescence emission levels of cultured bovine lenses as affected by three hour experimental exposure to three contact lens multipurpose solutions (COMPLETE Moisture Plus, AMO; OPTI-FREE Express, Alcon; and ReNu MultiPlus, Bausch & Lomb) was carried out. The pre- and post-exposure fluorescence levels of the lenses were obtained and values were compared to baseline and control measurements.Results: The solutions yielded varying degrees of cytotoxicity, demonstrating significant (p < 0.01) reversible reduction of cellular viability levels of the cultured crystalline lenses as revealed by the degree of fluorescence emissions in the following order (OPTI-FREE Express > ReNu MultiPlus > COMPLETE MoisturePlus multi-purpose solutions)Conclusions: The results show that OPTI-FREE Express and ReNu MultiPlus solutions exhibited more cytotoxic effect compared to COMPLETE MoisturePlus solution. The findings support reportsfrom previous clinical and laboratory studies. These results suggest that the in vitro approach herein presented would be a valuable system for relatively inexpensive and repeatable laboratory investigations of the possible ocular surface reactions of ophthal-mic solutions, cosmetics and pharmaceuticals at pre- and during commercial phases. 

scholarly journals On the scientific and methodological support of laboratory studies in the production of forensic – medical examination

2013 ◽  
Vol 17 (3 (67) p.1) ◽  
pp. 135-137
Author(s):  
N. A. Romanko
Keyword(s):  
Research Methods ◽  
Russian Federation ◽  
High Tech ◽  
Laboratory Studies ◽  
Biological Objects ◽  
The Russian Federation ◽  
New Research ◽  
And Control ◽  
New Criteria

This paper assesses the state of the normative-legal base of the Russian Federation, regulating the procedure for making an examination of corpses, survivors, case materials and biological objects. The author comes to a conclusion about a need for an adaptation of the normative and methodological base for new research methods and for new types of examinations with the use of the high-tech equipment; the development of new criteria enabling, to regulate the production load and control the quality of a research.

scholarly journals Groundwater Protection Policy and Agricultural Production: A Recursive Stochastic Analysis

1988 ◽  
Vol 17 (2) ◽  
pp. 131-138 ◽  
Author(s):  
Brian P. Baker
Keyword(s):  
Environmental Quality ◽  
Cultural Practices ◽  
Management Strategies ◽  
Agricultural Practices ◽  
Farm Income ◽  
Potato Acreage ◽  
Current State ◽  
Potato Beetle ◽  
Recursive Programming ◽  
And Control

Contamination of groundwater by agricultural practices presents a dilemma between protecting a vital resource and maintaining a valuable part of the economy. Policies to balance these objectives are presented. In addition to an historical baseline, policies that ban certain pesticides, taxes and subsidies, and control cultural practices are also considered. A model is developed to reflect the current state of agriculture in Eastern Suffolk County. This model consists of a recursive programming component, which has input for it generated by a stochastic model of Colorado potato beetle pest dynamics and management strategies to control those pests. While income is reduced by banning pesticides, the reduction is small when compared with the improvement in environmental quality. Further efforts to reduce pesticide use resulted in a reduction in potato acreage and incomes, as well as yields. Analysis concludes that improvements in both farm income and environmental quality could be achieved through the adoption of subsidies for low-input conservation crops.

TOXICITY OF SELECTED INSECTICIDES TO SEVERAL LIFE STAGES OF COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY)

1998 ◽  
Vol 130 (2) ◽  
pp. 187-194 ◽  
Author(s):  
S.A. Hilton ◽  
J.H. Tolman ◽  
D.C. MacArthur ◽  
C.R. Harris
Keyword(s):  
Colorado Potato Beetle ◽  
Resistant Strain ◽  
Leptinotarsa Decemlineata ◽  
Life Stage ◽  
Current Control ◽  
Life Stages ◽  
Laboratory Studies ◽  
Residual Toxicity ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say

AbstractResidual and contact toxicities of several insecticides to larvae and adults of insecticide-susceptible (four insecticides) and insecticide-resistant (three insecticides) Colorado potato beetle, Leptinotarsa decemlineata (Say), were measured in laboratory studies. For both methods of exposure, azinphosmethyl was the least toxic to all life stages tested. The residual toxicity of deltamethrin was at least 4.4-fold higher than either cypermethrin or endosulfan. With the insecticide-susceptible strain, residual toxicities of azinphosmethyl, endosulfan, and deltamethrin were, respectively, 3.5, 5.9, and 4.1 times higher to first instars than to adults and 1.2, 8.1, and 1.6 times higher to third instars than to adults. Contact toxicities of azinphosmethyl, endosulfan, and deltamethrin were, respectively, 3.3, 2.9, and 1.4 times higher to insecticide-susceptible third instars than to adults. In most comparisons, susceptibilities of fourth and third instars were similar. With the insecticide-resistant strain, azinphosmethyl, endosulfan, and deltamethrin were, respectively, 3.2, 1.6, and 8.0 times more toxic to third instars than to adults. The importance of differential life stage toxicity to current control recommendations for Colorado potato beetle is discussed.

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