Agricultural and Resource Economics Commons^™

Phd Thesis (Doctorat De Spécialité): Université De Ouagadougou, 1999. Dr. Mamoudou H. Dicko. Purification Et Propriétés Physico-Chimiques Des Enzymes De Curculigo Pilosa, Gladiolus Klattianus Et Boscia Senegalensis Catalysant L'Hydrolyse Des Polysaccharides (Amidon Et Béta-Glucanes), Mamoudou H. Dicko Prof.

Pr. Mamoudou H. DICKO, PhD

The objective of this study was the research of novel and inexpensive sources of polysaccharides degrading enzymes such as amylases and glucanases from local plants in order to justify their biotechnological applications. The isolation of two l3-amylases and an endo-1,3-ß-D-glucanase was reached using common protein purification methods such as buffer extraction, ammonium sulfate fractionation, ionexchange and gel filtration chromatographies. The methods used were simple and easily reproducible, suggesting the possibilfty of large-scale production. ln the crude extract of Curculigo pilosa tuber, only ß-amylase was detected as starch degrading enzyme and its activity was approximately 282 Uig of fresh material. The …

Institutional Changes And Discretionary Value For Property Rights In Drylands’ Farming Of The Sudan, Professor Issam A.W. Mohamed

Professor Issam A.W. Mohamed

Research on land tenure and use control and the socioeconomic sets of regulations in the agricultural rainfed sub sector of Sudan, come to focus for many reasons. Anthropogenic pressure, expanding animal population and migration led to accelerated impacts on both the ecological systems and land yields. Conflicts between governmental regulations and indigenous rules contribute to generate inconsistencies on who have the right to till the land and hence own it. With such transformation logically, more intensive commercial farming took place and land intake exponentially increased. Private or collective property rights of land are procured through traditional tenure, prescription, settlement or …

Amenities And The Labor Earnings Function, Philip E. Graves, Robert L. Sexton

PHILIP E GRAVES

Desirable locations are, other things equal, expected to be characterized by a mix of higher rents or lower wages. That is, if one area is more attractive than others, inmigration would occur, driving up the demand for land (hence raising rents) and increasing the supply of labor (hence lowering wages). The in-movement will continue until utility is the same across locations in equilibrium. Failing to hold constant amenities in the traditional earnings functions employed by labor economists will result, then, in omitted-variable bias if worker characteristics (years of schooling, union membership, and so on) are correlated with amenities. By way …

Amenities And Fringe Benefits: Omitted Variable Bias, Philip E. Graves, Robert L. Sexton, Michelle M. Arthur

PHILIP E GRAVES

If labor is fairly mobile, as it is in the United States, one would expect that households would move from less desirable areas toward more desirable areas until all areas are equally desirable. The way that areas become equally desirable is through the impact of movers on wages and rents (and possibly "endogenous" disamenities, such as congestion or pollution). That is, as people move to desirable areas, they will increase the demand for land (raising rents) and increase the supply of labor (lowering wages); in equilibrium, the wage and rent "compensation" for the niceness of an area reveals, in dollar …

The Historical Development Of Agriculture In Illinois, Pamela Riney-Kehrberg

Pamela Riney-Kehrberg

Illinois' agricultural history is long and complex. Illinois' first settlers, the Native Americans, practiced hunting, gathering, and fishing and made use of the resources of the woods and prairies. By the tenth century, Native Americans combined men's hunting with women's agricultural activities to meet the needs of their communities. The earliest crop Native American women cultivated was corn, imported to Illinois from the Southwest.

Amenities And Fringe Benefits: Omitted Variable Bias, Philip E. Graves, Robert L. Sexton, Michelle M. Arthur

Robert L Sexton

If labor is fairly mobile, as it is in the United States, one would expect that households would move from less desirable areas toward more desirable areas until all areas are equally desirable. The way that areas become equally desirable is through the impact of movers on wages and rents (and possibly "endogenous" disamenities, such as congestion or pollution). That is, as people move to desirable areas, they will increase the demand for land (raising rents) and increase the supply of labor (lowering wages); in equilibrium, the wage and rent "compensation" for the niceness of an area reveals, in dollar …

Endogenous Monitoring And Enforcement Of Transferable Emission Permit System, Kathy K. Dhanda, John Stranlund

Kathy K Dhanda

No abstract provided.

Demand For Ground Transportation Fuel And Pricing Policy In Asian Tigers, Ujjayant N. Chakravorty, Sara Banaszak, Pingsun Leung

Ujjayant Chakravorty

This paper examines the demand for gasoline and diesel in the ground transportation sectors of Korea and Taiwan, comparing the effects of their different pricing policies and stages of economic growth.

A Comparison Of Welfare Estimates From Four Models For Linking Seasonal Recreational Trips To Multinomial Models Of Site Choice, George R. Parsons, Ted Tomasi, Paul Jakus

George Parsons

Familiar And Favorite Sites In A Random Utility Model Of Beach Recreation, George R. Parsons, Daniel Mathew Massey, Ted Tomasi

George Parsons

No abstract provided.

Measures Of Welfare Effects In Multiproduct Industries: The Case Of Multispecies Individual Quota Fisheries, Niels Vestergaard

Niels Vestergaard

A framework is developed to measure the welfare effects of individual quota reforms in multiproduct industries using the multimarket welfare measure techniques suggested by Just, Hueth, and Schmitz (1982) and the concept of virtual price in the production theory literature (Neary 1995; Squires and Kirkley 1996). Under joint in input production it shown that quasirent under a single quota can be measured by the producer surplus either in the output market for quota output or in the quota market. Under multiple quotas the welfare effects of quota policies can be measured in one of the quota markets using inverse derived …