Ecological Studies at Espirito Santo Bay—Brazil Zooplankton Communities
Espirito Santo Bay is a coastal-tropical system, with strong water renovation cycle, which in turn adequate conditions to the development of many planktonic species (Bonecker et al., 1989)....

Integrated Coastal Resources Management in Grumari-Guaratiba-Marambaia Complex, Rio de Janeiro, Brazil
It is initially presented a brief physical description of the coastal region in question, which is situated at the eastern end of the Sepetiba Coastal plain on the Southern coast of Rio...

Rio de Janeiro Coastal Zone Education Program
Researches and studies made by the Department of Oceanography of the Institute of Geoscience of the State University of Rio de Janeiro - UERJ, evidenced the need for educational support...

Gravel Spit Stabilized by Unusual(?) High-Energy Wave Climate in Bay Side, Tierra Del Fuego
A 17 km-long sand and gravel spit grew from the Atlantic coast of Tierra del Fuego in the late Holocene, semi-enclosing a large and deep embayment. Strong westerly winds generate high-energy...

Net Late Holocene Emergence Despite Earthquake-Induced Submergence, South-Central Chile
Intertidal deposits show net late Holocene emergence along the Pacific coast near Maullin and Carelmapu, Chile (latitude 41.6°-41.7°S). The maximum amount of net emergence is about 1 m...

The Great Canadian Bridge Slide
An aging multispan swing bridge had to be replaced in Trenton, Ont., with minimal interference to both river and road traffic, and without changing its alignment. The solution was to build...

Hydropower: Making Its Mark in North America
To discover what plans North American hydropower producers have for their hydroelectric resources in the 1990s, Hydro Review conducted a survey of leaders in the hydro generation industry...

Electrical Design Survey
In North America, a mini hydro project consists primarily of the civil works which routes water to the turbine generator and the electrical hardware necessary to interface it with a utility....

Unique Design Used for Collapsible Gate
The collapsible gate on the Wausau Dam is unique; there is only one known that is similar in design. The collapsible gate, which looks like an inverted V, was designed by Mead and Hunt...

Diversion of the Parana River for the Yacyreta Hydroelectric Project
The diversion and closure of one of the world's largest rivers, the Parana River on the border of Paraguay and Argentina, for the 2760 MW Yacyreta Hydroelectric Project, sponsored...

On-Site Rehabilitation Capabilities for the Nineties
This paper will review recent technological advancements in on-site manufacturing and machining capabilities which have been developed for the proper installation of new hydro turbines....

Adopted Drip Irrigation Technology for Developing Countries
Two low cost drip irrigation systems are presented. Even though the uniformity of these systems is not as high as the conventional drip systems, the initial and operating costs of the...

Evaluation of Thermoplastic Drainage Pipe Designs in Europe and North America
The last 10 years have seen significant increase in the use of plastic pipe for drainage systems in North America in comparison to Europe. Many plastic pipe products have included corrugations,...

Construction under Fire
Construction is not carried out in a laboratory setting under controlled conditions—especially in areas of socio-political conflict, such as El Salvador in the 1980s. Instead, the construction...

First Experience Concerning the Seismic Behaviour of an Electric Power System in Eastern North America
The November 25, 1988, Saguenay earthquake of magnitude MbLg=6.5 occurred in the province of Quebec, Canada....

Two Decades of Communications Systems Seismic Protection Improvements
Telecommunications systems in North America have gone through significant technology changes in the past twenty years. The electro-mechanical switching equipment has been replaced by electronic...

Philosophy for Treatment of High-Pressure Natural Gas Pipelines at Active Fault Crossings
Natural gas from fields in the overthrust belt of southwest Wyoming will be collected and transported to Southern California. The proposed Kern River Pipeline will transport gas to Daggett,...

Comparison of Traffic Signal Systems in Australia and North America
Dynamic coordinated traffic signal systems were developed in Australia in the 1970's, and are now installed in many countries. In contrast, strong interest in new generation...

Probabilistic Assessment of Wind Loading For Structural Analysis
Records of extreme annual gust velocities from 11 weather stations in central-southern Brazil, classified according to orientation (octants) and type of storm (TS and EPS winds), result...

Reliability of Overhead Transmission Lines Subjected to Wind Action
The probability distribution of the strength of steel towers used in transmission lines, due to wind excitation, is evaluated on the basis of test results of 72 towers of various designs,...

 

 

 

 

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