scholarly journals Interactions of Light Intensity, Insecticide Concentration, and Time on the Efficacy of Systemic Insecticides in Suppressing Populations of the Sweetpotato Whitefly (Hemiptera: Aleyrodidae) and the Citrus Mealybug (Hemiptera: Pseudococcidae)

2012 ◽  
Vol 105 (2) ◽  
pp. 505-517 ◽  
Author(s):  
Raymond A. Cloyd ◽  
Kimberly A. Williams ◽  
Frank J. Byrne ◽  
Kenneth E. Kemp
Keyword(s):  
Light Intensity ◽  
Sweetpotato Whitefly ◽  
Citrus Mealybug ◽  
Systemic Insecticides ◽  
Insecticide Concentration

Effect of Systemic Insecticides on the Citrus Mealybug (Hemiptera: Pseudococcidae) Feeding on Coleus

2017 ◽  
Vol 52 (2) ◽  
pp. 104-118 ◽  
Author(s):  
N.J. Herrick ◽  
R.A. Cloyd
Keyword(s):  
Citrus Mealybug ◽  
Systemic Insecticides

scholarly journals DETERMINE EFFECT OF SYSTEMIC INSECTICIDES FOR CONTROL OF CITRUS MEALYBUG, 2006

2007 ◽  
Vol 32 (1) ◽  
Author(s):  
Raymond A. Cloyd
Keyword(s):  
Citrus Mealybug ◽  
Systemic Insecticides ◽  
Determine Effect

scholarly journals Soil and Foliar Applications of Systemic Insecticides for Control of Sweetpotato Whitefly on Zucchini Squash, 2015: Table 1

2016 ◽  
Vol 41 (1) ◽  
pp. tsw062
Author(s):  
Philip A. Stansly ◽  
Barry C. Kostyk
Keyword(s):  
Sweetpotato Whitefly ◽  
Systemic Insecticides

Fine structure of the retina of the giant scallop, Placopecten magellanicus

1984 ◽  
Vol 42 ◽  
pp. 312-313
Author(s):  
C.V.L. Powell
Keyword(s):  
Fine Structure ◽  
Electron Microscope ◽  
Light Intensity ◽  
Scanning Electron Microscope ◽  
Eye Development ◽  
Preliminary Observation ◽  
Columnar Epithelium ◽  
Placopecten Magellanicus ◽  
Environmental Light ◽  
Scanning Electron

The overall fine structure of the eye in Placopecten is similar to that of other scallops. The optic tentacle consists of an outer columnar epithelium which is modified into a pigmented iris and a cornea (Fig. 1). This capsule encloses the cellular lens, retina, reflecting argentea and the pigmented tapetum. The retina is divided into two parts (Fig. 2). The distal retina functions in the detection of movement and the proximal retina monitors environmental light intensity. The purpose of the present study is to describe the ultrastructure of the retina as a preliminary observation on eye development. This is also the first known presentation of scanning electron microscope studies of the eye of the scallop.

Effect of light intensity on the ultrastructure of the filamentous cyanobacterium, Anabaena variabilis

1988 ◽  
Vol 46 ◽  
pp. 300-301
Author(s):  
C. S. Bricker ◽  
S. R. Barnum ◽  
B. Huang ◽  
J. G. Jaworskl
Keyword(s):  
Fatty Acid ◽  
Light Intensity ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Anabaena Variabilis ◽  
Chloroplast Envelope ◽  
Major Constituent ◽  
Filamentous Cyanobacterium ◽  
Photosynthetic Membrane ◽  
Effect Of Light

Cyanobacteria are Gram negative prokaryotes that are capable of oxygenic photosynthesis. Although there are many similarities between eukaryotes and cyanobacteria in electron transfer and phosphorylation during photosynthesis, there are two features of the photosynthetic apparatus in cyanobacteria which distinguishes them from plants. Cyanobacteria contain phycobiliproteins organized in phycobilisomes on the surface of photosynthetic membrane. Another difference is in the organization of the photosynthetic membranes. Instead of stacked thylakolds within a chloroplast envelope membrane, as seen In eukaryotes, IntracytopIasmlc membranes generally are arranged in three to six concentric layers. Environmental factors such as temperature, nutrition and light fluency can significantly affect the physiology and morphology of cells. The effect of light Intensity shifts on the ultrastructure of Internal membrane in Anabaena variabilis grown under controlled environmental conditions was examined. Since a major constituent of cyanobacterial thylakolds are lipids, the fatty acid content also was measured and correlated with uItrastructural changes. The regulation of fatty acid synthesis in cyanobacteria ultimately can be studied if the fatty acid content can be manipulated.

Inter-Method Reliability of Pulse Volume Related Measures Derived Using Finger-Photoplethysmography

2018 ◽  
Vol 32 (4) ◽  
pp. 182-190 ◽  
Author(s):  
Kenta Matsumura ◽  
Koichi Shimizu ◽  
Peter Rolfe ◽  
Masanori Kakimoto ◽  
Takehiro Yamakoshi
Keyword(s):  
Light Intensity ◽  
Adverse Effects ◽  
Light Source ◽  
Direct Current ◽  
Resting State ◽  
Current Component ◽  
Psychophysiological Measures ◽  
Pulse Volume ◽  
Optical Paths ◽  
Sensor Positions

Abstract. Pulse volume (PV) and its related measures, such as modified normalized pulse volume (mNPV), direct-current component (DC), and pulse rate (PR), derived from the finger-photoplethysmogram (FPPG), are useful psychophysiological measures. Although considerable uncertainties exist in finger-photoplethysmography, little is known about the extent of the adverse effects on the measures. In this study, we therefore examined the inter-method reliability of each index across sensor positions and light intensities, which are major disturbance factors of FPPG. From the tips of the index fingers of 12 participants in a resting state, three simultaneous FPPGs having overlapping optical paths were recorded, with their light intensity being changed in three steps. The analysis revealed that the minimum values of three coefficients of Cronbach’s α for ln PV, ln mNPV, ln DC, and PR across positions were .948, .850, .922, and 1.000, respectively, and that those across intensities were .774, .985, .485, and .998, respectively. These findings suggest that ln mNPV and PR can be used for psychophysiological studies irrespective of minor differences in sensor attachment positions and light source intensity, whereas and ln DC can also be used for such studies but under the condition of light intensity being fixed.

Absolute judgments of light intensity.

1965 ◽  
Author(s):  
Richard E. Wienke
Keyword(s):  
Light Intensity

Spectral analysis of light intensity fluctuations caused by orientational fluctuations in nematics

1980 ◽  
Vol 41 (4) ◽  
pp. 351-358 ◽  
Author(s):  
D.C. Van Eck ◽  
R.J.J. Zijlstra
Keyword(s):  
Spectral Analysis ◽  
Light Intensity ◽  
Intensity Fluctuations
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