INSECT CONTROL BY ARTIFICIALLY PROLONGING PLANT DORMANCY — A NEW APPROACH

1968 ◽  
Vol 100 (12) ◽  
pp. 1278-1279 ◽  
Author(s):  
D. C. Eidt ◽  
C. H. A. Little
Keyword(s):  
Host Resistance ◽  
Sensory Perception ◽  
Habitat Destruction ◽  
Insect Control ◽  
Control Methods ◽  
New Approach ◽  
Host Insect ◽  
Insect Exclusion ◽  
Insect Parasites

Insect control methods are usually aimed directly at the insects. Examples are insect exclusion, poisons, and the more recent methods which upset metabolism, nervous coordination, sensory perception, or fertility. Some methods are indirect and involve manipulation of insect parasites, predators and diseases, habitat destruction, and host management. Only selection and breeding for host resistance are directed at the host of the insect. This is somewhat surprising because the host–insect relationship presents some of the most vulnerable aspects of the life of an insect.

Forming and Analytical Description of the Basic Vectors of a Two-Phase Switched Motor with a Two-Section Phase Winding

2021 ◽  
pp. 31-39
Author(s):  
Alexander V. KRIVILEV ◽  
◽  
Evgeniy A. DUNICH ◽  
Keyword(s):  
Pulse Width Modulation ◽  
Analytical Description ◽  
Control Methods ◽  
Physical Processes ◽  
Digital Device ◽  
Two Phase ◽  
New Approach ◽  
Single Section ◽  
Elementary Analysis ◽  
Three Phase

The article describes a new approach to the consideration of physical processes in switched motors with two-section phase windings, in which the section is taken as an elementary analysis unit. A system of designations for sections and phases is proposed, which can be extended to an arbitrary number of phases in the motor and sections in the phase. The possible states of the phases and sections that characterize the participation of each of them in producing the electromagnetic torque are determined. For a two-phase switched motor, possible section connection diagrams, phase engagement methods corresponding to these diagrams, and sets of basic armature magnetic induction vectors are determined. An analytical description of the basic vectors in the form of sets, the elements of which contain information about the amplitude and phase shift, is performed. The sets of basic vectors in a two-phase motor with a two-section phase winding are compared with those in a three-phase motor with a single-section phase winding, which is currently most widely used. The obtained description of the basic vector sets can serve as a basis for analytically representing a digital device for controlling a two-phase switched motor, and also as a basis for implementing control methods based on vector pulse width modulation.

Enhancing Host Resistance to Pressure Ulcers: A New Approach to Prevention

1993 ◽  
Vol 22 (3) ◽  
pp. 433-450 ◽  
Author(s):  
A.R. Mawson ◽  
F.H. Siddiqui ◽  
J.J. Biundo
Keyword(s):  
Host Resistance ◽  
Pressure Ulcers ◽  
New Approach

Symposium: Strategy and Tactics of Insect Control: Perspectives on Insect Control

1964 ◽  
Vol 96 (1-2) ◽  
pp. 167-171 ◽  
Author(s):  
B. N. Smallman
Keyword(s):  
Population Dynamics ◽  
Insect Control ◽  
Control Methods ◽  
The Past ◽  
New Perspective ◽  
Biological Methods ◽  
Scientific Questions ◽  
Social Affairs

AbstractDuring the past 100 years, insect control has been a predominant objective and influence on the development of entomology in Canada. Preoccupation with the insecticide method of insect control threatened for a while to divert entomologists from the biological bases of their science. But the scientific questions and practical problems raised by insecticides have recently generated a renaissance of biological thinking about insects and ways to control them. Older biological methods and certain promising new ones are receiving increased attention. Insecticides have won a permanent place in our arsenal but we can no longer continue to rely so heavily on this one weapon. A new perspective is emerging in which strategies of insect control will be formulated on the basis of population dynamics studies and will involve assembling from a variety of control methods the appropriate combinations to meet particular problems. The requirements of these combined strategies will impinge increasingly on economic and social affairs which, in turn, will modify the technology of insect control.

scholarly journals A method for detecting the early stages of local corrosion processes

2019 ◽  
Vol 121 ◽  
pp. 01003
Author(s):  
Vladimir Blokhin ◽  
Anton Dorosinskiy ◽  
Aleksandr Manjosov ◽  
Andrey Markin
Keyword(s):  
Oil And Gas ◽  
Production Equipment ◽  
Gas Production ◽  
Local Corrosion ◽  
Corrosion Monitoring ◽  
Control Methods ◽  
Oil And Gas Production ◽  
New Approach ◽  
Equipment And Pipelines ◽  
Random Nature

The article discusses the issues of monitoring the parameters of carbon dioxide corrosion of oil and gas production equipment and pipelines. The features of the main control methods traditionally used in the construction of corrosion monitoring systems, both in gas and in oil environments, are described. The article shows the random nature of local corrosion. A new approach to the creation of systems capable of detecting manifestations of local corrosion in real time and corresponding to the concept of “smart” deposits is proposed.

Insect Control Through Induced Host-Insect Asynchrony: A Progress Report1

1970 ◽  
Vol 63 (6) ◽  
pp. 1966-1968 ◽  
Author(s):  
D. C. Eidt ◽  
C. H. A. Little
Keyword(s):  
Insect Control ◽  
Host Insect

GENETIC INSECT CONTROL METHODS INVOLVING THE RELEASE OF RELATIVELY FEW LABORATORY-REARED INSECTS

1971 ◽  
Vol 103 (10) ◽  
pp. 1387-1396 ◽  
Author(s):  
C. F. Wehrhahn ◽  
W. Klassen
Keyword(s):  
Boll Weevil ◽  
Insect Control ◽  
Control Methods ◽  
Agricultural Pests ◽  
Population Densities ◽  
Lethal Genes

AbstractSeveral genetic insect control methods are currently available, but they are practicable only when population densities are low.In this paper we describe ways of increasing the frequencies of dominant conditional lethal genes in populations. The proposed methods should be particularly valuable for the eradication of major agricultural pests controlled at present by frequent applications of insecticide.Eradication of boll weevil populations could be accomplished by the release of relatively small numbers of artificially reared insects. The number required can be less than it is for other proposed methods by a factor of 100 or more¡¡

scholarly journals Towards Hybrid EEG-EMG-Based Control Approaches to be Used in Bio-robotics Applications: Current Status, Challenges and Future Directions

2013 ◽  
Vol 4 (2) ◽  
Author(s):  
Thilina Dulantha Lalitharatne ◽  
Kenbu Teramoto ◽  
Yoshiaki Hayashi ◽  
Kazuo Kiguchi
Keyword(s):  
Science Fiction ◽  
Current Status ◽  
Control Methods ◽  
Future Directions ◽  
New Approach ◽  
Emg Control ◽  
Recent Trends ◽  
Robotic Wheelchairs ◽  
Hybrid Fusion

AbstractIn the last few decades, bio-robotics applications such as exoskeletons, prosthetics and robotic wheelchairs have progressed from machines in science fiction to nearly commercialized products. Though there are still several challenges associated with electromyography (EMG) signals, the advances in use of EMG signals for controlling such bio-robotics applications have been enormous. Similarly, recent trends and attempts in developing electroencephalography- (EEG) based control methods have shown the potential of this area in the modern bio-robotics field. However, the EEG-based control methods are also yet to be perfected. A new approach of combining both these control methods, which take the advantages, and diminish the disadvantages, of each system might therefore be a promising approach. In this paper, we review hybrid fusion of EMG- and EEG-based control approaches in the bio-robotics field which have been attempted or developed to date. We provide a design overview of the method and consider the main features and merits/disadvantagages for the approaches that have been analyzed. We also discuss the current challenges regarding these hybrid EEG-EMG control approaches and propose some potential future directions.

Sign in / Sign up

Export Citation Format

Share Document