Bed media

The aim of this study was to investigate the performance of intermittent feeding condition on pollutants removal of shallow bed subsurface flow wetland roof (WR). The effect of new bed materials (charcoal) and two plants (Kyllinga Nemoralis and Wedelia Trilobata) on removal efficiency of WR with canteen wastewater were surveyed.

4p viwendy2711 05-10-2021 14 1   Download

The occurrence of pesticides even at low concentrations in drinking water sources might induce potential risks to public health. This study aimed to investigate the removal mechanisms of eight pesticides by the nitrifying expanded-bed filter using biological activated carbon media at the pretreatment of a drinking water plant.

13p chauchaungayxua12 09-07-2021 11 1   Download

This study was conducted with an objective to find out the most suitable media for better germination of coffee seeds sown in portray and raised bed. Coffee seedlings were grown in portray and raise using 7 different media for a period of 45 days in primary nursery.

3p cothumenhmong11 11-05-2021 8 2   Download

Cassava (Manihot esculenta Crantz.) is an important tuber cultivated in India. Cassava is vegetatively propagated through stem cuttings (setts). A mature plant with two stems will give about 12 to 20 normal sized (20 cm) setts after one year. Farmers are practicing 8-10 cm long cuttings from the mature part of stem and planted in vertical position in nursery bed at closer spacing of 5 cm. Under conventional system of propagation, 1250 to 1500 stems are required for planting one hectare of area.

5p caygaocaolon6 30-07-2020 6 1   Download

The performance of a vertical subsurface flow constructed wetland (VSSFCW) for sewage effluent treatment was studied in an eight month experiment under different operational conditions including: vegetation (the presence or absence of common reeds ‘‘Phragmites australis”), media type (gravel or vermiculite), and mode of sewage feeding (continuous or batch). Plants had a significant effect (P < 0.05) on the removal efficiency and mass removal rate of all pollutants, except phosphorous.

12p kequaidan1 16-11-2019 19 0   Download

Research records data related to small-scale aquaponic systems were applied using two pilot models, Floating bed systems (FBS) and Media Filled Systems (MFS), for effective testing as well as assessment. Aquaponic is a sort of bioreactor that combines the process of fish farming and use of plants to recycle wastewater, which is the combination of aquaculture and hydroponics.

10p queencongchua2 29-08-2019 24 3   Download

Two studies from the period document the dramatic changes that television brought to children’s allocation of time. First, Maccoby (1951) surveyed 622 children in Boston in 1950 and 1951 and matched children with and without television by age, sex, and socioeconomic status. The study found that radio lis- tening, movie watching, and reading were substantially lower in the television group, but also that total media time was greater by approximately an hour and a half per day.

35p dambaotaikhoan 06-05-2013 59 3   Download

Many psychiatric institutions, general hospitals and social care homes in countries continue to use caged beds routinely to restrain patients with mental disorders and mental retardation. Caged beds are beds with netting or, in some cases, metal bars, which serve to physically restrain the patients. Patients are often kept in caged beds for extended periods, sometimes even years. This type of restraint is often used when staff levels or training are inadequate, and sometimes as a form of punishment or threat of punishment.

40p thamgiacongdong 02-05-2013 35 5   Download

If your entry is awarded a Silver ADDY at the local or district level, you have won the right to compete at the next level of competition and may choose to pay the applicable entry fee in order to be forwarded. You will be contacted with information regarding your entries that qualify to be forwarded to the next level of competition, entry fees, due dates and how to submit payment. The rules, divisions and categories defined here serve as the official policy for the AAF ADDY competition and replace all others from previous competitions. The name ADDY Awards, ADDY and the...

12p tay_thi_le 19-02-2013 54 8   Download

The idea to edit this book started with an e-mail from Suzanne Mekking of Springer Science and Business Media who wanted to make an appointment to talk about current needs for new books in the field of aquatic sciences. During that meeting, she attempted to persuade me into writing a book about my field of research – ecological interactions among coral reefs, mangroves, and seagrass beds by reef fishes. At first, I was not interested due to the large amount of work this would encompass, and my already overloaded work schedule....

613p phoebe75 01-02-2013 40 8   Download