Practical experiences with faulty feeder identification using transient signals

2008 ◽  
Author(s):  
Xue Yongduan ◽  
Xu Bingyin ◽  
Ma Shicong ◽  
Wang Tao
Keyword(s):  
Transient Signals ◽  
Practical Experiences

BUILDING ACADEMIC STAFF CAPACITY TO SUPPORT ONLINE LEARNING IN DEVELOPING COUNTRIES

2013 ◽  
Vol 17 (2) ◽  
Author(s):  
Greig Krull ◽  
Brenda Mallinson
Keyword(s):  
Teaching And Learning ◽  
Tertiary Education ◽  
Academic Staff ◽  
Online Communication ◽  
Distance Teaching ◽  
Online Learners ◽  
Web Technologies ◽  
Course Material ◽  
Practical Experiences ◽  
Online Communication Tools

Higher Education Institutions (HEIs) in Africa face the challenge of responding to the expanding demand for tertiary education while maintaining or enhancing the quality of their course offerings. This has led to some HEIs introducing interactive web technologies to support their distance teaching and learning practices. However, academic staff at these institutions may struggle to provide sufficient support to online learners in part due to inadequate staff capacity in terms of familiarity with and use of online communication tools. This paper reports the practical experiences of building academic staff capacity within three southern Africa institutions, in order to initiate skills development and introduce foundational concepts in support of engaging online learners. The design of the course material is discussed and the experiences of the facilitators and participants are examined.

First Practical Experiences with Submerged Rope-Type Bio-Film Reactors for Upgrading and Nitrification

1991 ◽  
Vol 23 (4-6) ◽  
pp. 825-834 ◽  
Author(s):  
T. H. Lessel
Keyword(s):  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Practical Application ◽  
Reactor Material ◽  
Reactor Materials ◽  
Practical Experiences ◽  
One Year ◽  
Operational Data

The upgrading and nitrification was required for the waste water treatment plant in Geiselbullach. As space for more aeration tanks was not available, the possibility of increasing the MLSS by the use of submerged bio-film reactors was tested in a half technical scale pilot plant with three different reactor materials. Each tested reactor material caused a significant increase of MLSS and the nitrification reaction. The rope-type material was selected for the practical application, as it had not the same disadvantages of the other tested systems, which proved operational problems. After one year of continuous operation for nitrification in the full scale plant the influences on the biomass characteristics were investigated. Design criterias and details and operational data are reported.

Problems and practical experiences during refilling of the Kerspe-Talsperre under unfavourable climatic conditions

1998 ◽  
Vol 37 (2) ◽  
pp. 145-152 ◽  
Author(s):  
A. E. Nienhüser ◽  
P. Braches
Keyword(s):  
Water Quality ◽  
Early Summer ◽  
Climatic Conditions ◽  
Oxygen Deficit ◽  
Light Limitation ◽  
Raw Water ◽  
Artificial Mixing ◽  
Poor Water Quality ◽  
High Concentrations ◽  
Practical Experiences

Refilling of the Kerspe-Talsperre reservoir after restoration of the dam caused severe problems in water quality and supply due to a long-lasting ice-cover period and minimal precipitation. Unusually short spring overturn, high algal mass in spring and certainly the overflooding of the sediment, which had not been removed, caused a tremendous oxygen deficit in early summer. The whole hypolimnion turned anoxic and even in the metalimnion oxygen declined to a minimum. Manganese and iron reached high concentrations. Despite the poor water quality, raw water was urgently needed for the water supply and was pumped from the epilimnion during the clear water phase and in July when algal biomass was low. In the middle of August holomixis was induced artificially in order to improve water quality. The decline in algal production during and after artificial mixing was probably caused by light limitation of the algae.

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