scholarly journals A study of the physical and chemical characteristics of the waters of the central marshes in southern Iraq after restoration

2014 ◽  
Vol 11 (2) ◽  
pp. 991-998
Author(s):  
Baghdad Science Journal
Keyword(s):  
Dissolved Oxygen ◽  
Fresh Water ◽  
Water Samples ◽  
Total Alkalinity ◽  
Chemical Characteristics ◽  
The South ◽  
Physical And Chemical Characteristics ◽  
South Of Iraq ◽  
Physical And Chemical ◽  
Southern Iraq

some ecological (physical and chemical varible) of water samples were studies monthly from December 2008 to May 2009 at two stations( St.1) Al - Chibayesh marsh and (St.2) Abu – Zirik marsh which are located in the south of Iraq . These variables included : Temperature, pH, EC, Dissolved oxygen , Total alkalinity, Nitrate, Sulphate, and phosphate, Si-SiO2 and Ca ,Mg, Cl, The marsh Considered as fresh water and alkaline. Abu-Zirik less than Al-Chibayesh.

scholarly journals Analysis of the influence of environmental parameters on methane flux from floodplains and lakes in the Abobral River, Pantanal, Brazil

2016 ◽  
Vol 11 (2) ◽  
pp. 327 ◽  
Author(s):  
Marcelo Gomes Da Silva ◽  
Plínio Carlos Alvalá ◽  
Luciano Marani ◽  
Willian José Ferreira
Keyword(s):  
Dissolved Oxygen ◽  
Redox Potential ◽  
Environmental Parameters ◽  
Methane Flux ◽  
Chemical Characteristics ◽  
Average Value ◽  
Physical And Chemical Characteristics ◽  
Drought And Flood ◽  
Diffusive Fluxes ◽  
Physical And Chemical

This study evaluates the influence of physical and chemical characteristics of the water column in the processes that result in methane emissions in the Pantanal. Two surveys were conducted in 2009 and 2010, corresponding to the drought and flood seasons, respectively. The CH4 fluxes were determined using the static chamber technique. Environmental variables, such as depth, water temperature, pH, redox potential, dissolved oxygen and total dissolved solids were also measured. Diffusive and bubble flux presented an average value of 11.1 ± 13.5 mg CH4 m-2 d-1 e 275.9 ± 348.5 mg CH4 m-2 d-1, which is a value near those observed in other tropical flooded regions. Statistical t-tests have shown significant differences between drought and flood seasons (p ≤ 0.05). Diffusive fluxes represented about 87% of the total fluxes measured in drought. During the flood season there were more instances of bubble fluxes (77%). Statistical analysis (correlation and Principal Components Analysis) indicate that physical and chemical characteristics could affect methane fluxes. Diffusive fluxes correlated mainly with pH, redox potential and dissolved oxygen, which is in accordance with the increase of organic matter during flooding. Bubble fluxes measured during the drought season correlated mainly with water depth and temperature, pH and redox potential, which is an indication of an environment to suitable to the formation and liberation of the bubbles from sediment.

Study of Structural, Physical and Chemical Characteristics of Marshmallow Without Gelatin

Food Industry ◽  
2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Nataliia V. Nepovinnykh ◽  
Yuri A. Kodatsky ◽  
Oksana N. Klyukina ◽  
Nataliia M. Ptichkin ◽  
Samira Yeganehzad
Keyword(s):  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Physical And Chemical

Effects of Chlormequat-Uniconazole 30% Micro-Emulsion on Stem Physical and Chemical Characteristics of Rice

2013 ◽  
Vol 39 (6) ◽  
pp. 1089
Author(s):  
Qian ZHANG ◽  
Ming-Cai ZHANG ◽  
Hai-Yan ZHANG ◽  
Wei-Ming TAN ◽  
Zhao-Hu LI ◽  
...  
Keyword(s):  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Micro Emulsion ◽  
Physical And Chemical

Physical and Chemical Characteristics of Meats of the Indonesian Indigenous Crossbred Chickens Fed Fermented Mixture of Papaya (Carica papaya L.) Leaf and Seed Meal

2020 ◽  
Keyword(s):  
Crude Protein ◽  
Control Diet ◽  
Dietary Treatment ◽  
Seed Meal ◽  
Chemical Characteristics ◽  
Breast Meat ◽  
Ph Values ◽  
Physical And Chemical Characteristics ◽  
Dietary Treatments ◽  
Physical And Chemical

The objective of this present study was to investigate the effect of feeding fermented mixture of papaya leaf and seed meal (FERM) on the physical and chemical characteristics of meats of the Indonesian indigenous crossbred chicken (IICC). The study was carried out with 300 day-old IICC. The chicks were randomly distributed to five treatment groups, i.e., CONT (control diet based on corn-soybean- diet), FERMA (diet containing 1% FERM), FERMB (2.5% FERM), FERMC (5% FERM) and FERMD (7.5% FERM). Each treatment group consisted of 6 replicates with 10 IICC in each. At week 8, one chick from each replicate was randomly taken and slaughtered. After being de-feathered and eviscerated, samples from breast and thigh meats were obtained. Results showed that the increased levels of FERM was followed by the increased (P<0.05) pH values, moisture and crude protein content of breast meats of the IICC. Dietary incorporation of FERM especially at the level of 2.5% increased (P<0.05) the content of fat in the breast meat of IICC, while further increased levels of FERM did not alter (P>0.05) the fat content of the IICC breast meat. Dietary treatment did not have any effect (P>0.05) on the lightness (L*) values of breast meat of the IICC. The redness (a*) values were higher (P<0.05) in FERMD breast meat than other. FERM diet resulted in lower (P<0.05) yellowness (b*) values in the IICC breast meat. The pH values and moisture content of thigh meat increased (P<0.05) with the increased level of FERM. The WHC decreased (P<0.05) with the elevated levels of FERM in the diets. There was an increase (P<0.05) in crude protein concentration in FERMA as compared to the other meats. Crude fat and ash concentrations in thigh meat were affected (P<0.05) by the treatments. Dietary treatments had no impact (P>0.05) on L* values of thigh meats. Feeding FERM at 7.5% from diets increased (P<0.05) and decreased (P<0.05) the redness and yellowness of meats. In conclusion, dietary inclusion of FERM especially at the level of 7.5% from diets improved the physical and chemical characteristics of the IICC meats.

scholarly journals Experimental Interpretation of Physical and Chemical Characteristics of Soil Material upon the Radon and Thoron Exhalation Rate

2007 ◽  
Vol 42 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Masahiro HOSODA ◽  
Yusuke YAMAMOTO ◽  
Kazumasa HARADA ◽  
Toshinari KORI ◽  
Masahiro FUKUSHI ◽  
...  
Keyword(s):  
Chemical Characteristics ◽  
Exhalation Rate ◽  
Soil Material ◽  
Physical And Chemical Characteristics ◽  
Physical And Chemical
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