Monitoring the Quarry Pit Development

The Self-networking Safety Monitoring System Design in the Pit

In most of the traditional monitoring system, wired or handled devices are used to transmit signals, which is inconvenient for power supply, signal management, transmission and maintenance. To overcome these shortcomings, it is mainly introduced how the ZigBee wireless communication protocol is used as the technical support to put forward a wireless combustible gas monitoring and networking sol...

Development of a Sphagnum Bog on the Floor of a Sandstone Quarry in Northeastern Quarry in Northeastern Ohio

The vegetation and selected ground water characteristics of Silica Sand Quarry Bog, a pioneer bog forming in an abandoned sandstone quarry, were examined. After 70 years of development the bog mat measures 0.75 km in diameter and contains 35 species of vascular plants and 5 species of Sphagnum. Six species of vascular plants from the bog are on Ohio's rare plant list. The herbaceous layer is th...

Prize quarry

dogfish and a total allowable catch of zero for 2010. Scientists had recommended a zero catch for this year as studies suggest the northeast Atlantic population is on the verge of collapse. Catches for cod outside the North Sea, hake, monkfish, sole and whiting have also been agreed at levels higher than those recommended by EU advisors. The Bay of Biscay anchovy fishery is to remain closed but...

the impact of morphological awareness on the vocabulary development of the iranian efl students

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

New Data towards the Development of a Comprehensive Taphonomic Framework for the Cleveland-lloyd Dinosaur Quarry