The Egg of \u3ci\u3eStylogaster Neglecta\u3c/i\u3e Williston (Diptera: Conopidae)

Adults of both sexes and the previously unknown eggs of the parasitoid conopid fly Stylogaster neglecta Williston are illustrated and measurements are provided, including the total clutch size and the lengths and widths of eggs from random samples

An Investigation of Steric Inhibition of Resonance in Liquid Scintillators

It is well known that the replacement of two or more of the ortho hydrogen atoms in the benzene rings of biphenyl by lager atoms or groups hinders the rotation about the l.l\u27-carbon single bond in the biphenyl system. If the groups are so large that they are unable to pass each other upon rotation of the l,l\u27-bond, then the two benzene rings are forced to assume a non-planar configuration

Culpability and Willingness to Pay to Reduce Negative Externalities: A Contingent Valuation and Experimental Economics Study

Financial Economics,

Prospect for Regional Planning in California

Because the environment is being seriously threatened by overpopulation, overdevelopment, and pollution, there has been an increasing awareness of dhe need to control land usage through comprehensive regional planning. While California has failed to effectively respond to that need in the past, it appears that the Legislature is now moving in that direction and the establishment of at least some comprehensive regional planning agencies is imminent. In this article, the authors discuss various approaches to regional planning, problems of enforcement of regional plans, and alternatives available for controlling the regional planning process. The authors conclude dheir analysis by setting forth commendations for basic criteria necessary for effective regional planning legislation in 1973

The PRO Program: One District’s Experience With Decentralizing Staff Development

Even today after years of restructuring and reform, when staff development is mentioned, many teachers still shudder and imagine a day of lecture that has little if anything to do with providing usable and relevant skills and information

Adapting predictive models to reduce fungicide sprays on tomatoes in Iowa

Iowa tomato growers face critical challenges in pest control. The public is concerned about the health risks of pesticide residues on fruits and vegetables as well as environmental contamination; the result has been fewer, more restricted, more expensive pesticide products for minor crops such as tomatoes. At the same time, the market continues to demand high-quality, abundant, blemish-free produce

Irrigation and disease management of vegetables

Wise use of irrigation may help farmers to reduce fungicide applications on vegetable crops. Such a reduction is potentially significant when one considers that irrigation, fertilizer, and pesticide use account for more than 50 percent of the energy expended in fresh vegetable production