Application of Systems Thinking to the assessment of an institutional development project of river restoration at a campus university in Southern Brazil.

Rapid urban growth and high population density have become a problem for urban water resources, especially in developing countries. In general, the pollution of rivers and degradation of ecosystems are the result of both management failures and lack of sewage treatment. River restoration appears as a solution to improve this scenario, but it is common for there to be an absence of a systemic vision in these projects.

A stormwater user fee model for operations and maintenance in small cities.

In this paper, a stormwater fee specifically for small municipalities was developed through a simplification of the Equivalent Residential Unit (ERU) system, which is the main method applied in the United States. The Simplified ERU is based on the amount of impervious area and the fee considers the operations and maintenance costs, besides having a single class of billing. It was applied in Santo Amaro da Imperatriz city, located in the southern region of Brazil, which can be classified as a small city.

E. coli maltodextrin phosphorylase: primary structure and deletion mapping of the C-terminal site.

The complete 796 residue amino acid sequence of maltodextrin phosphorylase was deduced from the E. coli malP nucleotide sequence. The calculated molecular weight of 90,500, including pyridoxal phosphate, is significantly larger than experimentally determined values.

[Results following reflux-free stomach resection with Roux-en-Y anastomosis in gastroduodenal ulcer].

The ulcer risk of Billroth-II-Y-Roux anastomosis, following distal two-third to three-quarter gastrectomy for complicated duodenal ulcer, ventricular ulcer, and pepto-jejunal ulcer was checked in 29 of 31 patients after surgery. (One patient had died after the operation and one rejected follow-up check for absence of complaints.) The same group of 29 patients underwent postoperative clinical examinations 1.

Evolution of catalytic and regulatory sites in phosphorylases.

Glycogen phosphorylase (E.C.2.