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China's Foreign Trade 1994年第8期 39-39页

作者： Jiang Mei

Permanent magnetic locks are a new high tech product manufactured by the Datang Industrial Corporation, Ltd. in the Jinan High Tech Development Zone. Instead of using mechanical springs, permanent magnetic locks feature alternating and equidifferent mono and multiple magnetic codes. The locks contain millions of codes. With no key hole or gears, permanent magnetic locks cannot be opened by a master key. The locks are damage proof, shock proof and drill proof, and easy to use. Permanent magnetic locks are used for safes, cars, motorcycles and bicycles.

关键词： locks manufactured Jinan permanent proof opened drill millions codes alternating

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Multifunctional Alarm Door locks

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China's Foreign Trade 1994年第10期 47-47页

作者： Min Jie

Multifunctional alarm door locks developed and produced by the Shanghai Huxi Special locks Factory are a product combining a safety lock with an alarm device and bell. All the technical data of the product have been e... 详细信息

关键词： inspection alarm locks install factory outside locked forced award Malaysia

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The Danube, an Empire Boundary River: Settlements, Invasions, Navigation, and Trade Pathway

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Journal of Water Resource and Protection 2020年第10期12卷 884-897页

作者： Kenneth R. Olson Edward Krug Department of Natural Resources and Environmental Sciences College of Agricultural Consumer and Environmental Sciences University of Illinois Urbana USA Illinois State Water Survey Champaign USA

The Danube River basin was home to some of the world’s earliest human cultures such as the Danubian Neolithic cultures including the Linear Pottery culture. The Vucedol culture was famous for ceramics during the third millennium BC. Early settlement required fortresses and castles to be built on the Danube River to defend the settlements from invading forces. These included the Persia, Roman and Ottoman empires. Cities included Vienna, Budapest, Belgrade and Ruse. The risks include stream capture, settlement, invasions, navigation, trade, pollution, industrial and urban wastewater, over fishing, food insecurity, locks and dams, shoreline erosion and flooding. The primary objective was to document the settlement history on the Danube River which became Eastern Europe’s pathway for settlement, invasions, navigation and trade in the Danube basin has put the river at risk for more than 2500 years. River capturing of the Danube by the Rhine River has reduced the length and flow of the Danube. The Danube River has had a huge economic, social and environmental impact on 10 European countries. However, with 10 countries sharing the river it has been difficult to manage and mitigate the risks and threats to the Danube River and its water quality.

关键词： locks Dams Flooding Shoreline Erosion Fishing Drinking Water Ottoman Roman Hydroelectric Pirate Attacks

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Water Resources, Infrastructure Restoration, and Protection of the Upper Mississippi River Basin

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Open Journal of Soil Science 2021年第1期11卷 13-38页

作者： Kenneth R. Olson Samuel J. Indorante Gerald A. Miller Professor Emeritus of Soil Science in the Department of Natural Resources and Environmental Sciences College of Agricultural Consumer and Environmental Sciences University of Illinois Urbana Illinois USA Soil Science at Southern Illinois University Carbondale Illinois USA Professor Emeritus of Soil Science in the Department of Agronomy College of Agriculture and Life Sciences at Iowa State University Ames Iowa USA

The Upper Mississippi River flows approximately 2000 km from Lake Itasca, Minnesota to Cairo, Illinois where it is confluences with the Ohio River to form the Lower Mississippi River. North of the confluence, numerous snags, sand bars, rapids, and other obstructions made the Upper Mississippi River travel difficult. This paper highlights how the geological and landscape resources of the Upper Mississippi River and tributary watershed were responsible for the successful economic development of this historically rich region of North America. Environmental challenges include an attempt to keep invasive species such as the Asian carp out of the rivers and lakes north of the Twin Cities. In an attempt to protect the Mississippi River resource, Environmental and Conservation groups have opposed continued navigation through Minneapolis and St. Paul and the planned Upper Mississippi River navigation infrastructure restoration by the United States Corps of Engineers including the upper and lower St. Anthony locks and dams. These Environmental, Conservation and Save the River groups are attempting to mitigate the historic highest and best use of the Mississippi River and adjacent watershed, navigation, and economic development, by having the urban river restored to the natural state.

关键词： Falls of St. Anthony locks Dams Minneapolis St. Paul Navigation Water Pollution

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Long-Term Environmental Impacts of Pesticide and Herbicide Use in Panama Canal Zone

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Open Journal of Soil Science 2021年第9期11卷 403-434页

作者： Kenneth R. Olson Donna Tornoe Professor Emeritus of Soil Science in the Department of Natural Resources and Environmental Sciences College of Agricultural Consumer and Environmental Sciences University of Illinois Urbana USA Director Veterans of Panama Canal Zone Military Veterans Advocacy Slidell USA

The opening of the Panama Canal in 1913 transformed ocean-shipping and the availability of internationally-traded goods, shortened travel time between the Pacific and Atlantic oceans, increased ship tonnage, and sparked the growth of port authorities on both the Atlantic and Pacific coasts of the Panama Canal. Historically, the United States was number one and China was number two in tons of cargo that pass through the canal annually in the high stakes game of import and export markets. Prior to the construction of the Panama Canal, the most efficient way to cross the 82-kilometer isthmus, between the Port of Panama City on the Pacific and the Port of Colon on the Atlantic, was by mule trails through tropical forests and river transportation. Since the construction of the Panama Canal through tropical forests in the 1910s, pesticides have been essential for managing mosquitoes as well as controlling wetland vegetation that blocked lakes, rivers and the canal. The primary objective of this research study is to document the long-term environmental impacts of pesticide and herbicide use in the Panama Canal Zone. Many of these chemicals, including 2, 4,-D, 2, 4, 5-T and DDT, have a long half-life under water and some, like arsenic (As), have no half-life. Pesticides and chemicals flowed into Lake Gatun via surface runoff either in solution or attached to the sediment during the rainy season. The by-product 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is an unanticipated contaminant created during the manufacture of the herbicide 2,4,5-T. TCDD can bio-accumulate in fish and birds and enter into the human food supply. The extent of the current chemical and pesticide contamination on former U.S. military base grounds and in Lake Gatun is unknown. Systematic soil sampling of current and former military bases, chemical disposal sites and Lake Gatun or the Panama Canal sediments is needed to determine if mitigation is necessary.

关键词： Arsenic Dams DDT Dioxin TCDD 2 4-D 2 4 5-T Howard Air Force Base Hyacinths Lake Gatun locks Mosquitoes Pesticides Termites

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