scholarly journals Physico-chemical Properties of Pure Water Samples in South Western Nigeria

2001 ◽  
Vol 6 (4) ◽  
Author(s):  
O. A Ashaye ◽  
A. A Couple ◽  
O.O Afolabi ◽  
S. B Fasoyiro
Keyword(s):  
Water Samples ◽  
Pure Water ◽  
Chemical Properties ◽  
Physico Chemical

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

The Retrospects and Prospects of Pure Water Hydraulic Technology

2012 ◽  
Vol 201-202 ◽  
pp. 979-982 ◽  
Author(s):  
Feng Xu ◽  
Li Xiang Zhang
Keyword(s):  
Hydraulic System ◽  
Low Cost ◽  
Pure Water ◽  
Chemical Properties ◽  
Simple System ◽  
Hydraulic Oil ◽  
Physico Chemical ◽  
Water Hydraulic ◽  
Research Situation ◽  
The Ideal

Pure water hydraulic technology attracts more and more attention of people due to no pollution, low cost, simple system, and many other advantages. This paper compares physico-chemical properties between pure water and hydraulic oil, concludes that pure water is the ideal medium for hydraulic system. Then it discusses the development of pure water hydraulic technology, introduces the present research situation and development of pure water hydraulic components from home to abroad in the future.

scholarly journals Water Quality of Major Ponds of Comilla Town

1970 ◽  
Vol 45 (1) ◽  
pp. 57-62
Author(s):  
SZKM Shamsad ◽  
Md Didar-Ul-Alam ◽  
ASM Shamsuddoha ◽  
Mohammad Naushad Alam
Keyword(s):  
Water Quality ◽  
Community Health ◽  
Key Words ◽  
Water Samples ◽  
Chemical Constituents ◽  
Chemical Properties ◽  
Organic Wastes ◽  
Dry Period ◽  
Physico Chemical

Some important physico-chemical properties of water of major ponds of Comilla Town were studied to evaluate the water quality. Eight water samples were collected during the dry period (March 2005) from eight major ponds of Comilla Town (Ranir dighi, Mandir dighi, Nanuar dighi, Fauzdari dighi, Modina dighi, Dargabari dighi, Darma Sagar and Thakurpara). The result revealed that all the chemical constituents, except a few, are beyond the recommended limit for different uses. Higher value of pH (at Dargabari dighi, Darma Sagar dighi), OM (at Thakurpara dighi, Fauzdari dighi and Modina dighi), NH4+ concentration (at Ranir dighi, Mandir Dighi, Fauzdari dighi, Modina dighi and Dargabari dighi), and lower value of DO (at Fauzdari dighi and Modina dighi) may due to continuous disposal of kitchen wastes, organic wastes, sewage running and fall of twigs as well as extensive used for bathing, washing cloths and utensils etc. All indicate eutrophication and affect community health and hygiene and also create aesthetic problem in the locality. Key words: Ponds; Comilla District; Water quality Eutrophication DOI: 10.3329/bjsir.v45i1.5184 Bangladesh J. Sci. Ind. Res. 45(1), 57-62, 2010

scholarly journals Studies on Effect of Kokum Syrup on Physico-chemical Properties of Herbal Kokum Whey Beverage

2021 ◽  
Author(s):  
S.H. Terde ◽  
S.R. Lande ◽  
S.S. Ramod ◽  
N.A. Suryawanshi ◽  
V.S. Dandekar
Keyword(s):  
Cheese Whey ◽  
Pure Water ◽  
Chemical Properties ◽  
Total Sugar ◽  
Milk Products ◽  
Carbon Dioxide Gas ◽  
Physico Chemical ◽  
Cent Level ◽  
Whey Beverages ◽  
Different Levels

Background: Whey is the major by-product in dairy industry obtained during production of coagulated milk products like paneer, chaana, casein and cheese. Whey beverages are pure water containing sugar, flavour, edible acids and pigments and sometimes it was carbonated with carbon dioxide gas. Methods: In, present investigation kokum whey beverage was manufactured with different levels of honey and kokum syrup viz., 14 and 16 per cent level of honey and 10, 12.5 and 15 per cent level of kokum syrup incorporated with chhana whey. Result: The finished product was objected to physico-chemical analysis such as total solids, fat, protein, total sugar, ash and pH. Kokum whey beverage prepared with 14 per cent honey and 12.5 per cent kokum syrup found superior over rest of the treatments.

Study on irrigation water quality in some minor lift irrigation schemes and its impact on soil characteristics

2019 ◽  
Vol 5 (02) ◽  
pp. 262-265
Author(s):  
Sanjay Swami
Keyword(s):  
Irrigation Water ◽  
Water Samples ◽  
High Salinity ◽  
Chemical Properties ◽  
Soil Characteristics ◽  
Quality Parameters ◽  
Available N ◽  
Available Nutrients ◽  
Standard Procedures ◽  
Physico Chemical

The quality parameters of irrigation water in some minor lift irrigation schemes on Bhor nallah, Chatha farm at Gidergalion were evaluated and their impacts on soil characteristics in the fringe areas of Ranvir canal and non command were studied. Irrigation water samples at monthly intervals were collected and analyzed for pH, Electrical conductivity (EC), Sodium Adsorption Ratio (SAR), Magnesium Hazards (MH) and Residual Sodium Carbonate (RSC) by following standard methods. The soil samples from the concern command and adjoining areas (non command) were also collected and analyzed for important physico chemical properties and available nutrients as per standard procedures. Results revealed that majority of water samples collected from minor lift irrigation schemes on Bhor and Balal nallahs containing municipal/industrial waste was under high salinity-low SAR category, whereas water samples of Ranbir Canal at Gidergalian falls under medium salinity-low SAR. The soil characteristics viz. pH, EC, OC and available N, P and K were higher in command soils of Bhor and Chatha as compared to non command soils of Gidergalian and Dharap.

Suitability of Water for Drinking and Irrigation Use Using Water Quality Index and GIS

Agropedology ◽  
2019 ◽  
Vol 29 (1) ◽  
Author(s):  
V. T. Shinde ◽  
◽  
M. Singh ◽  
S. B. Nandgude ◽  
N. Varshney ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Water Quality Index ◽  
Quality Index ◽  
Chemical Properties ◽  
Surface Water Quality ◽  
Gujarat State ◽  
Drinking And Irrigation ◽  
Physico Chemical ◽  
The Us

The present study highlights techniques to identify suitability of water for drinking and irrigation uses. Twenty water samples from Dang district of Gujarat state were collected in pre-monsoon (PRM) and post-monsoon (POM) seasons and analyzed for different physico-chemical properties. The Water Quality Index varied from 37.83 to 121.68 in PRM season and from 40.09 to 152.83 in POM season. Surface water quality in the Dang district was good for drinking in 58.43 % and 64.43 % area in PRM and POM season, respectively. The US Salinity diagram showed that most of the water samples belong to the categories C2S1 and C2S2 (suitable class for irrigation) in both the seasons. Some samples falling in the category C3S2 are also acceptable for irrigation use in both the seasons.

Bacteriological and physico-chemical quality assessment of household drinking water in Ado-Ekiti, Nigeria

2011 ◽  
Vol 11 (1) ◽  
pp. 79-84
Author(s):  
J. O. Oluyege ◽  
A. E. Koko ◽  
O. A. Aregbesola
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Tap Water ◽  
Chemical Properties ◽  
Rain Water ◽  
Resistance Pattern ◽  
Total Bacterial Count ◽  
Well Water ◽  
Domestic Water ◽  
Physico Chemical

An investigation on the bacteriological and physico-chemical properties of stored household drinking water in Ado-Ekiti, Nigeria was carried out between April and October, 2008. The drinking water sources considered for examination were harvested rain water, tap water and well water stored in plastic water pots for 2 to 4 days. The waterborne pathogens in the samples that were isolated were characterized for antibiotic resistance. Estimation of bacterial loads in the water samples revealed mean total bacterial count (TBC) of 1.17 × 105, 1.30 × 104 and 9.70 × 104 cfu/ml for rain water, tap water and well water respectively. The mean-total coliform count (TCC) were recorded as 1.57 × 106, 7.40 × 105 and 5.70 × 105 cfu/ml for rain water, tap water and well water respectively. Seven bacteria genera comprising Escherichia (41.7%), Shigella (75%), Klebsiella (33.3%), Pseudomonas (25%), Staphylococcus (25%), Streptococcus (50%) and Enterococcus (20%) were isolated from stored rain water .Three genera comprising Escherichia coli (8.3%), Staphylococcus (25%) and Pseudomonas (75%) were isolated from stored tap water. In well water samples, nine genera comprising Escherichia (50%), Salmonella (100%) Enterococcus (80%) and Shigella (25%) Proteus (100%) Serratia (100%), Klebsiella (66.6%), Staphylococcus (50%) and Streptococcus (50%) were isolated. The antibiotic susceptibility tests showed that the majority of the bacteria isolated particulaly, Escherichia, Salmonella, Enterococcus and Shigella were resistant to common antibiotics which are still available in Nigerian market. The resistance pattern of the bacterial isolates ranged from 50–100% to amoxicillin, tetracycline, streptomycin, cotrimoxazone, erythromycin, gentamicin. In terms of physico-chemical analysis, all the water samples met the WHO standard for drinking water. However, the results obtained revealed that adequate domestic water sanitation and disinfection programmes must be put in place to ensure safety against waterborne antibiotic resistant pathogens especially in developing countries.

scholarly journals Bacteriological and physico-chemical properties of the Gulshan Lake, Dhaka

1970 ◽  
Vol 40 (2) ◽  
pp. 105-111 ◽  
Author(s):  
Mihir Lal Saha ◽  
Tahmina Bari ◽  
Mahbubar Rahman Khan ◽  
Sirajul Hoque
Keyword(s):  
Seasonal Variation ◽  
Pseudomonas Syringae ◽  
Water Samples ◽  
Rainy Season ◽  
Heterotrophic Bacteria ◽  
Bacterial Load ◽  
Chemical Properties ◽  
Enteric Bacteria ◽  
Physico Chemical ◽  
Chemical Contents

Seasonal variation on bacterial load irrespective of heterotrophic and enteric bacteria was noticed in Gulshan lack of Dhaka Metropolitan city. The lowest number (1.56×106 cfu/100 ml) in the summer and the highest (19.03×106 cfu/100 ml) were recorded during winter. Among the isolated bacteria 32 were studied in details and provisionally identified as Bacillus cereus (1), B. sphaericus (1), B. subtilis (1), B. brevis (2), B. pasteuri (1), B. stearothermophilus (1), B. azotoformans (1), B. pantothenticus (1), B. licheniformis (1), B. circulans (1), B. insolitus (1), Planococcus citrius (1), Micrococcus sedentarius (1), Pseudomonas. syringae (4), P. aeruginosa (1), P. cichorii (1), Escherichia (2), Klebsiella (1), Aeromonas (1), Proteus (1), Enterobacter (1), Salmonella (2), Yersinia (1), Shigella (1), Hafnia (1), and Alcaligens (1). The temperature and pH of the water samples varied between 24.3 and 29.2º C and 6.54 and 7.12, respectively. Chemical contents (mg/l) like NH4 +-N, NO3 --N and phosphorus ranged 3.06 (Winter) to 14.86 (Summer), 0.32 (in Rainy season) to 13.02 (Summer) and 0.81 (Rainy season) to 1.86 (Summer), respectively. The enteric bacterial load (0.03 × 105 cfu/100 ml in Rainy season to 21.2 × 105 cfu/100 ml in Winter) and the presence of Escherichia, Aeromonas, Enterobacter, Pseudonomas in the samples indicated significant level of microbial pollution of the lake. Key words: Aerobic-heterotrophic; Bacteria; Enteric bacteria; Chemical factorsDOI: http://dx.doi.org/10.3329/bjb.v40i2.9753 Bangladesh J. Bot. 40(2): 105-111, 2011 (December)  

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