Cost of landspreading and hauling sludge from municipal wastewater treatment plants : case studies.

Mode of access: Internet.

Application of selected industrial engineering techniques to wastewater treatment plants,

"EPA-R2-73-176."

Compilation of reported noble gas effluent monitor capabilities at operating nuclear power plants /

"NUREG-0592."

An annotated bibliography of the low temperature relations of plants /

Arranged alphabetically by author, with subject index.

Determination of maximum permissible levels of selected chemicals that exert toxic effects on plants of economic importance in Illinois,

Bibliographical references.

Catalogue of the phenogamous plants and the ferns growing without cultivation, within five miles of Yale College, Ct.

"Extracted from the appendix (VI) to Mr. E. Baldwin's History of Yale College."-- T.p.

Medicina Britannica : or, A treatise on such physical plants as are generally to be found in the fields or gardens in Great-Britain : containing a particular account of their nature, virtues, and uses ... /

Includes: "Three indexes: The first containing the English and Latin names of the plants treated of : The second of the diseases, and their remedies : The third to the notes."

Germs of mind in plants,

Mode of access: Internet.

Some effects of insecticide spray accumulations in soil on crop plants /

Caption title.

Applicability of experience from laboratory reactors with biological phosphorus removal in full-scale plants

Enhanced biological phosphorus removal (EBPR) has been used at many wastewater treatment plants all over the world for many years. In this study a full-scale sludge with good EBPR was tested with P-release batch tests and combined FISH/MAR (fluorescence in situ hybridisation and microautoradiography). Proposed models of PAOs and GAOs (polyphosphate- and glycogen-accumulating organisms) and microbial methods suggested from studies of laboratory reactors were found to be applicable also on sludge from full-scale plants. Dependency of pH and the uptake of both acetate and propionate were studied and used for calculations for verifying the models and results from microbial methods. All rates found from the batch tests with acetate were higher than in the batch tests with propionate, which was explained by the finding that only those parts of the bacterial community that were able to take up acetate anaerobically were able to take up propionate anaerobically.

Spatio-temporal patterns of herbage availability and livestock movements: A cross-border analysis in the Chinese-Mongolian Altay

Due to increasing population and the recent implementation of policies to intensify the use of land and water resources, the transhumant pastoral systems in the Chinese-Mongolian Altay-Dzungarian region are rapidly changing, leading to modifications of herd size, herd composition and spatial distribution of livestock grazing. This may have major consequences for the supply and quality of rangeland biomass. Despite similar topographic settings, the socio-political framework for Chinese and Mongolian pastoralists differs significantly, leading to differences in rangeland utilization. To substantiate these claims, the long-distance transhumance routes, frequency of pasture changes, daily grazing itineraries and size of pastures were recorded by means of GPS tracking of cattle and goats on 1,535 (China) and 1,396 (Mongolia) observation days. The status quo of the main seasonal pastures was captured by measuring the herbage offer and its nutritive value in 869 sampling spots. In the Altay-Dzungarian region, small ruminant herds covered up to 412 km (Mongolia) and grazed on up to nine pastures per year (China). In Mongolia, the herds’ average duration of stay at an individual pasture was longer than in China, particularly in spring and autumn. Herbage allowance at the onset of a grazing period (kg dry matter per sheep unit and day) ranged from 34/17 to 91/95 (China/Mongolia). Comparing crude protein and phosphorous concentrations of herbage, in China, the highest concentrations were measured for spring and summer pastures, whereas in Mongolia, the highest concentrations were determined for autumn and winter pastures. Based on our data, we conclude that regulation of animal numbers and access to pastures seemingly maintained pasture productivity in China, especially at high altitudes. However, this policy may prohibit flexible adaptation to sudden environmental constraints. In contrast, high stocking densities and grazing of pastures before flowering of herbaceous plants negatively affected rangeland productivity in Mongolia, especially for spring and summer pastures.