effects of air temperature on atmospheric co(sub 2)-plant growth relationships

the carbon dioxide concentration of the earth's atmosphere is increasing and expected to double some time during the middle of the next century. in addition, climate models predict that due to the ''greenhouse effect'', increased atmospheric co(sub 2) may cause a warming of the earth's surface of 1.5 to 4.5(degree)c. the separate effects ..

central neuronal mechanisms involved in the cardiorespiratory effects of organophosphorus agents. annual rept. 1 dec 85-30 nov 86

the purpose of our study was to determine where organophosphates act in the brain to cause respiratory depression. our focus was on the chemosensitive sites on the ventral surface of the medulla of anesthetized cats. for this purpose, drugs were applied bilaterally on the ventral surface of the medulla, specifically at the rostral, interm..

central neuronal mechanisms involved in the cardiorespiratory effects of organophosphorus agents. annual rept. 1 dec 86-30 nov 87

the purpose of the present study was to test a wide range of doses of soman for the purpose of describing dose-related changes in respiratory function. adult cata anesthetized with alpha-chloralose were used and respiratory activity was monitored with a fleisch pneumotachograph. soman was administered by topical application (drug was adde..

gezira irrigation scheme in sudan: objectives, design, and performance

the report is part of a series of case studies on the performance of irrigation systems in different countries. these studies focus on the extent to which the design of the irrigation system fosters effective water management and provides equitable, reliable, timely water distribution to farms (analyzes water efficiencies, the effectivene..

automation study for longhorn army ammunition plant hand held signal flight assembly, rocket barrel assembly, 40 mm signal, final packaging/pack-out, and star finishing

this report deals with the type of automation necessary to manufacture the various hand held signals, 40mm signals, and the finishing of the star components at longhorn aap. it details the major objectives and necessary assumptions that evolved during the research and design phase of this report. the specific automation approaches to be t..

effects of a subsidized put option program and forward selling on farmers' revenue risks. technical bulletin

the effectiveness of the current commodity program for cotton, corn, soybeans, and wheat is compared with the effectiveness of a subsidized put option program for these four commodities. both programs on average would reduce the standard deviation of revenue for individual farmers by about 20. either program, in conjunction with farmers' ..

design of sediment control measures for small areas in surface coal mining

the manual provides design information for four groups of sediment control structures and treatments which are suitable for use on small areas in surface coal mining. a detailed design procedure is given for each group which will estimate the total amount of settleable solids from a small area with a sediment control structure or treatmen..

design of sediment control measures for small areas in surface coal mining. draft rept

the manual provides design information for four groups of sediment control structures and treatments which are suitable for use on small areas in surface coal mining. a detailed design procedure is given for each group which will estimate the total amount of settleable solids from a small area with a sediment control structure or treatmen..

central neuronal mechanisms involved in the cardiorespiratory effects of organophosphorous agents. final rept. 1 dec 85-31 may 89

the organophosphorous anticholinesterase agents diisopropylfluorophosphate (dfp) and soman were applied topically, by way of cotton pledgets placed bilaterally to three different chemosensitive areas of the ventral medulla of the cat, and the effects on cardiorespiratory activity were monitored. the dose range was 6.25-25.0 microgram/side..

enhanced reserve and productivity evaluation in tight gas sands annual technical report, december 1989-november 1990

the primary properties derived from formation evaluation in tight gas zones are porosity, permeability, gas saturation, the presence and orientation of naturally occurring fractures and the in-situ stress profiles. these properties are determined primarily by electric logs in combination with other logs such as density, neutron, sonic and..