Set retarder

Deep borehole disposal (DBD) is being increasingly seen as a viable and potentially superior alternative to comparatively shallow mined repository concepts for disposal of some high-level radioactive wastes. We report here details of proof-of-concept investigations into the use of cementitious grouts as sealing/ support matrices for use in low temperature DBD scenarios.

8p vironald 15-12-2022 12 4   Download

A field experiment was conducted to find out the effect of different growth retardants on yield and yield contributing characters in mango (Mangifera indica L.) cv. Alphonso under Ultra High Density Planting during 2013-2014 at Jain Irrigation Systems Limited (JISL) Farms, in Tamil Nadu. Eleven treatments with different combinations were imposed on five-year-old uniform sized Alphonso trees grown under a spacing of 3 x 2 m.

9p trinhthamhodang1218 26-02-2021 24 2   Download

Shrimp culture is the most lucrative aquaculture sector in Asia-Pacific region. Recently, shrimp farms in India have been affected by the microsporidian parasite, Enterocytozoon hepatopenaei (EHP) associated with retarded growth without other clinical signs, causing significant economic losses to the shrimp industry. The present study was carried out to investigate the incidence of EHP in Penaeus vannamei farms of Nellore district of Andhra Pradesh, and to identify the carriers of EHP and the role of management in reducing the incidence of EHP in ponds.

10p kethamoi4 16-04-2020 12 1   Download

Standard values for birth weight by gestational age are not available for sub-Saharan Africa, but are needed to evaluate incidence and risk factors for intrauterine growth retardation in settings where HIV, antiretrovirals, and other in utero exposures may impact birth outcomes.

8p virubber2711 21-03-2020 13 3   Download

The utilization of black liquor, produced by the pulp and paper industry in Egypt, as a workability aid and set retarder admixture has been investigated. This approach may help eliminate the environmentally polluting black liquor waste. It also provides a low cost by-product, which can be widely used in the construction industry. The properties of black liquor and its performance on concrete at two different ratios of water to cement have been studied. The results revealed that black liquor from rice straw pulp increases concrete workability, improves compaction, and reduces honeycombing.

7p kethamoi1 20-11-2019 22 1   Download

I Discovery of New South Wales.--Arrival of a Colony there from England.-Obstructions calculated to retard the Progress of the Settlement.-- Departure of Governor Phillip.--Intervening Governors, until the Arrival of John Hunter, Esq. .and his Assumption of the Government.-- Printing Press set up.--Cattle lost, and Discovery of their Progeny in a wild State.--Playhouse opened.--Houses numbered.--Assessments for the building of a Country Gaol.--Town Clock at Sidney.--Natives.-Convicts.--Improvement of the Colony.--Seditious Dispositions of the Convicts.--Departure of Governor Hunter.

107p culao1122 11-01-2013 40 2   Download

Nevertheless, vitalism continued to find its way into the description of life processes. For instance, Pasteur writing about his discovery of the importance of oxygen availability for sugar fermentation by yeast, to be later known as the Pasteur effect, argued for the exclusive dependency of intact cell structure, a variant of cell theory postulated by Matthias Schleiden, Theodor Schwann, and their predecessors, and “ferments”, a set of biocatalysts represented as vital forces.

452p yeutinh98 22-09-2012 71 10   Download