quantitative arithmetic of projective varieties - t browning (birkhauser, 2009) ww

... E  S ϕ  S // E ∨∨ S . Note that, since the conditions of being antisymmetric and satistying the Jacobi identity are closed, in order to have them for an S-family, it is not enough to check that they are satisfied ... isomorphism between the sheafified functors. We will show that, for a g  -sheaf, its (semi)stability is equivalent to that of the corresponding tensor. This is the key initi...

Ngày tải lên: 16/02/2014, 05:20

... The purpose of this research is to investigate the utility of using soil survey maps to represent the surficial geology of portions of the Lower St. John River Valley of Northeastern Aroostook ... Aroostook County, along the St. John River, on the northern border of Maine. The study areas include portions of the St. John River Valley near Fort Kent and another section of...

Ngày tải lên: 08/03/2014, 23:20

... the duodenum along the small intestine as a conse- quence of contractions that start at the gastroduodenal junction due to the generation of electrical activity at this junction in the form of ... not equal to either the potentially digestible fraction or potential extent of digestion. Flux or flow: Amount of material per unit of time that is transferred to or from a compartment....

Ngày tải lên: 24/10/2013, 17:15

... ratio of the amount of any component of digesta in a segment to the flow of that digesta component from that segment. Thus the MRT of a digesta com- ponent is its time constant of flow. Under steady-state ... limits the amount of such diets that can be eaten. Thus a knowledge of digesta flow through the ruminant gastrointestinal (GI) tract, and of the factors that affect it,...

Ngày tải lên: 24/10/2013, 17:15

... fitted to various mathematical models to estimate the fractional rate of degradation. This parameter is used with the passage rate to Table 4.3. Methods to estimate the extent of degradation of ... growth pattern. After reaching an asymptote, the Table 4.2. Methods to investigate rumen fermentation. 1. Batch cultures or bulk incubations â Short- or medium-term experiments â Non-steady-s...

Ngày tải lên: 29/10/2013, 00:15

... and there- fore can constrain voluntary intake. This constraint, together with other factors such as palatability, bulk density and rate of digestion, potentially limits the ability of ruminants ... illustration, if the distribution coefficient of MP between dorsal and ventral sacs (ratio of the MP content of the raft compared to MP in ventral digesta) is greater than 1, it is eithe...

Ngày tải lên: 29/10/2013, 00:15

... glutamate synthase, the former utilizing ATP in the reaction of ammonia and glutamate to form glutamine, and the latter reductively transaminating the amide group of glutamine to a-ketoglutarate to ... ruminants ingest fresh forages, the majority of plant cells arrive in the rumen intact. Their studies suggest that degradation of proteins is initiated within intact plant cells by the...

Ngày tải lên: 07/11/2013, 23:15

... stirred batch culture that is fed continuously with nutrient medium and a portion of the culture is withdrawn at intervals. Like the chemostat and consecutive batch culture, it can be main- tained ... to contribute the majority of the metabolic pathways known to occur in the rumen. Acting together in a mixed population, these few species might be able to reproduce the attributes of the...

Ngày tải lên: 07/11/2013, 23:15