منابع مشابه
Cockroach allergen reduction by cockroach control alone in low-income urban homes: a randomized control trial.
BACKGROUND We previously reported significant reductions in cockroach allergen concentrations in urban homes by reducing cockroach infestations. OBJECTIVE To determine the effectiveness of pest control performed by professional entomologists, compared with commercial companies, in reducing cockroach allergen. METHODS This 3-arm randomized controlled trial enrolled 60 cockroach-infested home...
متن کاملLocomotion control of hybrid cockroach robots.
Natural systems retain significant advantages over engineered systems in many aspects, including size and versatility. In this research, we develop a hybrid robotic system using American (Periplaneta americana) and discoid (Blaberus discoidalis) cockroaches that uses the natural locomotion and robustness of the insect. A tethered control system was firstly characterized using American cockroach...
متن کاملCockroach counts and house dust allergen concentrations after professional cockroach control and cleaning.
BACKGROUND It is known that cockroach allergen exposure is both frequent in inner-city homes and associated with asthma severity in children living in those homes. However, there have been few studies of interventions to reduce exposures in this setting. OBJECTIVE To evaluate the effect of short-term professional cockroach control and intensive cleaning on allergen concentrations. METHODS F...
متن کاملExperiments on the Control of Tomato Yellows,
Page Introduction 1 Alteration of the environment 2 Keduced sunlight 3 Shading with tall-growing plants 4 Shading with muslin tents 6 Shading with low and densely growing plants 7 Spraying and dusting 9 Soil management 10 Irrigation and fertilization 11 Page Soil management—Continued. Soil dryness and preirrigation 13 Green manuring _ 13 Green manure with lime and fertilizers.. 14 Time of plant...
متن کاملExperiments in On-Line Learning Neuro-Control
We apply our on-line learning neural network approach to control of non-linear systems; first to joint level trajectory control of an industrial welding robot, and then to one front leg of a hexapod walking robot. The first application demonstrates the ability of neuro-control to model complex non-linear components of a plant, thereby yielding impressive improvements in accuracy compared to the...
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ژورنال
عنوان ژورنال: Journal of Economic Entomology
سال: 1918
ISSN: 1938-291X,0022-0493
DOI: 10.1093/jee/11.5.424