نتایج جستجو برای: backwash effects

تعداد نتایج: 1544431  

2013
John LOWE Xin YU

This paper reports on the on-going evaluation of a computer-assisted system (CEOTS) for the assessing of spoken English skills among Chinese university students. This system is being developed to deal with the negative backwash effects of the present system of assessment of speaking skills which is only available to a tiny minority. We present data from a survey of students at the developing in...

Journal: :Journal of Water Reuse and Desalination 2013

2006
T. E. Baldock M. G. Hughes

Field observations of instantaneous water surface slopes in the swash zone are presented. For free-surface flows with a hydrostatic pressure distribution the surface slope is equivalent to the horizontal pressure gradient. Observations were made using a novel technique which in its simplest form consists of a horizontal stringline extending seaward from the beach face. Visual observation, still...

Journal: :Emerging Infectious Diseases 2008
Joan M. Shields Elizabeth R. Gleim Michael J. Beach

Cryptosporidium spp. and Giardia intestinalis have been found in swimming pool filter backwash during outbreaks. To determine baseline prevalence, we sampled pools not associated with outbreaks and found that of 160 sampled pools, 13 (8.1%) were positive for 1 or both parasites; 10 (6.2%) for Giardia sp., 2 (1.2%) for Cryptosporidium spp., and 1 (0.6%) for both.

Journal: :Journal of advance college of engineering and management 2023

The water treatment plant (WTP) employs a variety of electrical machines and utilities, making it an intensive energy consumption plant. In this study, audit was conducted on the Basbari WTP in Kathmandu, Nepal to identify hotspots that consume most recommend solutions for energy-efficient operation. A power quality analyzer used analyze patterns parameters data from electricity authority. stud...

2012
Liying Cheng

AUTHOR Cheng, Liying TITLE Washback or Backwash: A Review of the Impact of Testing on Teaching and Learning. PUB DATE 2000-00-00 NOTE 34p. PUB TYPE Opinion Papers (120) EDRS PRICE MF01/PCO2 Plus Postage. DESCRIPTORS Achievement Tests; Curriculum Based Assessment; Elementary Secondary Education; *Evaluation Research; Language Tests; *Performance Based Assessment; Second Language Instruction; Sec...

2016
Josephin Schröder Burga Braun Karsten Liere Ulrich Szewzyk

Rheinheimera sp. strain SA_1 is an iron-depositing bacterium for which we report a draft genome sequence. Strain SA_1 was isolated from iron backwash sludge of a waterworks in Germany. The Illumina MiSeq technique was used to sequence the genome of the strain.

Journal: :Applied and environmental microbiology 2004
T Wohlsen J Bates B Gray M Katouli

We evaluated the efficiency of five membrane filters for recovery of Cryptosporidium parvum oocysts and Giardia lamblia cysts. These filters included the Pall Life Sciences Envirochek (EC) standard filtration and Envirochek high-volume (EC-HV) membrane filters, the Millipore flatbed membrane filter, the Sartorius flatbed membrane filter (SMF), and the Filta-Max (FM) depth filter. Distilled and ...

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