Articles de revues : « Physico-Chemical Parametres »

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GASPAR, D. THOMMAI AROCKIA. « Some Seasonal Changes in the Physico - Chemical Parameters of Thamirabarani Estuary ». International Journal of Scientific Research 3, n^o 5 (1 janvier 2012) : 35–37. http://dx.doi.org/10.15373/22778179/may2014/11.

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Malum, Japhet Flayin, Muhammed Nezifi Hussein et W. Williams Akaamaa. « Sediment and Water Quality Characteristics of Ubelle Stream, Ogugu, Olamaboro, Kogi State, Nigeria ». International Journal of Agriculture and Earth Science 8, n^o 6 (26 août 2023) : 54–68. http://dx.doi.org/10.56201/ijaes.v8.no6.2022.pg54.68.

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Sedimentation is a process that erodes and transports soil particles into water bodies. Sediment reduces storage capacity, lifespan of stream basins, water quality.The Ubelle stream was 465m length, 25 to 45m width and 60m depth. The stream basin served the people of the community as a multipurpose stream for fishing, swimming, laundry and sources of water for domestic uses. Soil analysis showed, excess sediment has been transported into the stream basin within a period of 15 years. Siltation occupied 57.07m, out of the 60m, leaving 1.00 to 2.93m in depth.This reduced the water storage and w a t e r q u a l i t y . Soil samples analysis w a s dominated by very fine sand, ranging between 84.08 to 85.57 %. These indicate silty-clay soils silted the stream basin. Porosity ranged from 6 to 14%. This is low, indicating the soil is dense with low volume of voids relative to the volume of solids; meaning, it is more porous, less cohesive; and prone to erosive forces. Bulk density ranged from 2.27- 2.50g/cm 3 . This is high compared to average standard values of 1.33g/cm 3 . High bulk density reduces infiltration of water into the soil and increases overland flow resulting in erosion. Therefore the stream basin was silted by silty-clay soils. Being a multipurpose stream; the physico-chemical parametres of the stream water was not suitable for drinking, but suitable for aquaculture. Erosion control measures like vegetative covers, afforestation along the river bed will avoid more soil loss. The stream water should be treated before use for drinking and other domestic uses.

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Patel, Shally, SUMAN SINGH et VIMA PATEL. « Seasonal Effect of Physico-Chemical Parameters of Beehar River Rewa District (M.P.) ». Indian Journal of Applied Research 4, n^o 3 (1 octobre 2011) : 498–500. http://dx.doi.org/10.15373/2249555x/mar2014/156.

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Bhuyan, Gyaneswar, Dr R. Anandhan Dr. R. Anandhan et V. kavitha V. kavitha. « Seasonal Variation of Physico-Chemical Parameters in Kedilam River, Tamil Nadu, India ». International Journal of Scientific Research 2, n^o 10 (1 juin 2012) : 1–3. http://dx.doi.org/10.15373/22778179/oct2013/137.

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Rajkumar, Frederick, et KG Sivaramakrishnan. « Evaluation of Probiotics for Improving Physico-Chemical Parameters in Tiger Shrimp Culture Pond ». Journal of Pure and Applied Microbiology 11, n^o 4 (30 décembre 2017) : 2023–26. http://dx.doi.org/10.22207/jpam.11.4.45.

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Basavaraj, S. K., et Girish G. Kadadevaru. « Assessment of Physico-chemical Parameters and Zooplankton Community at Gopalaswamy Tank, Chitradurga, Karnataka ». Indian Journal Of Science And Technology 17, n^o 4 (26 janvier 2024) : 368–72. http://dx.doi.org/10.17485/ijst/v17i4.2722.

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Sanjay, Bhadane Rekha. « Seasonal Variations in Different Physico-Chemical Parameters in Gangapur Dam of Nashik District, Maharashtra ». Indian Journal of Applied Research 4, n^o 7 (1 octobre 2011) : 559–62. http://dx.doi.org/10.15373/2249555x/july2014/178.

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Jadhav, S. D., et M. S. Jadhav. « Analysis of Water Quality Using Physico-chemical Parameters of Mula-Mutha River, Pune Maharashtra ». International Journal of Trend in Scientific Research and Development Volume-1, Issue-6 (31 octobre 2017) : 250–56. http://dx.doi.org/10.31142/ijtsrd2509.

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Beqaj, Blerina. « Evaluation of Water Quality Parameters for Narta Lagoon ». European Journal of Engineering and Technology Research 8, n^o 1 (19 janvier 2023) : 41–45. http://dx.doi.org/10.24018/ejeng.2023.8.1.2945.

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The coastal area of Albania is characterized by specific constructions, parts of which are the coastal wetlands and its lagooning. Lagoons are very specific bodies of water that acquire an interesting status along with the indisputable values they have. The value of knowing the physico-chemical properties of the water of the Narta Lagoon is related to many processes that occur within the lagoon and in the environments around it. The study was carried out on the Narta Lagoon to identify the chemical and physical characteristics of the water. For the determination of the physico-chemical properties, a certain methodology has been followed, which includes the establishment of a network of five stations for sampling the water of the lagoon and the determination of the level of certain physico-chemical parameters. The physico-chemical parameters that were determined are: temperature (T), pH, dissolved oxygen (O2), BOD5, S%, Cl-, ECw, NH4+, NO2-, P-PO43-, hardness. The most pronounced differences of the physico-chemical levels are those that belong to the data of the south-east station. According to the level of different components for all the stations, a degree of homogeneity in the physico-chemical composition is observed. Only the physico-chemical feature of the water at south-eastern part of the lagoon makes a difference, which is related to the influence of the urban discharge channel of the city of Vlora. The physico-chemical parameters that interpret pollution such as: dissolved oxygen (O2), BOD5, NH4+, NO2-, NO3-, PO43-, hardness is higher than in other stations of the lagoon.

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J.O, Alagbe, Adedeji M.O, Habiba Z, Nwosu Gloria et Dabara Comfort Wyedia. « Physico-Chemical Properties of Indigofera Zollingeriana Seed Oil ». Biomedical Research and Clinical Reviews 6, n^o 2 (24 janvier 2022) : 01–03. http://dx.doi.org/10.31579/2692-9406/099.

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The objective of the present study is to examine the physico-chemical properties of Indigofera zollingeriana seed oil. Physico-chemical parameters of oils are important in the determination of edibility and other industrial applications. All the laboratory analysis were carried out using standard procedures according to AOAC (2000). The acid value, peroxide value, iodine value, saponfication value, refractive index and free fatty acids of cold pressed Indigofera zollingeriana seed oil was found to be 17.11 mg NaOH/g, 23.04 meq/kg, 180.4 gI2/100g, 118.7 mg/KOH/g and 14.10 %. The refractive index (20oC) and specific gravity (25oC) was 2.01 and 1.02 respectively. The extracted oil was Indigo in colour at liquid state. It was concluded the oil has a high acid value, peroxide value and free fatty acid which favours the use of the oil for industrial use such as soap production and cosmetics.

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L, Negi. « Physico-Chemical Analysis of Murchita and Amurchita Shadanga Ghrita ». Journal of Natural & ; Ayurvedic Medicine 7, n^o 4 (5 octobre 2023) : 1–5. http://dx.doi.org/10.23880/jonam-16000415.

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Background: Contagious diseases are the most common cause of death globally and Atisaar is one of them. More than 1 billion cases and at least 4 million deaths per year are attributed to diarrhoea worldwide. Ayurvedic literature has numerous uninvestigated medicines, Shadanga Ghrita is one of those classical herbal formulations used in the management of Atisaar, mentioned in the famous text Chakradatta. Preparation of this oleaginous dosage form is described as Sneha Kalpana, done by subjecting Ghrita to a particular pattern of heat-treated with 1/4th part Kalka (paste) and 4th part of Kwatha (decoction) of the respective drugs in equal proportion. Till date, no research work has been done on the study of Shadanga Ghrita. So the present study was planned to evaluate the Physio-Chemical analysis of Shadanga Ghrita with and without Murchana. Aim and Objective: Aim was to prepare the sample of Shadanga Ghrita with & without Murchana and to evaluate both the formulations through pharmaceutical and analytical parameters. Material and Methods: Murchana of Ghrita was done as per Bhaishajya Ratnavali Jwara-rogadhikaar & Shadanga Ghrita was prepared as per Sharangdhar Samhita. Result: All the Physico-chemical parameters of both the samples are within the reference range Conclusion: Murchita Shadanga Ghrita is better than Amurchita Shadanga Ghrita due to better taste, odor, low viscosity, high saponification & high peroxide value.

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Ingole, Dr Sangita P., Prof Arvind Chavhan et Dr Jayashree D. Dhote. « Study of Physico-Chemical Parameters of Wastewater From Some Selected Location on Amba Nalla, Amravati ». Indian Journal of Applied Research 3, n^o 8 (1 octobre 2011) : 311–14. http://dx.doi.org/10.15373/2249555x/aug2013/97.

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Sailaja, V. Hema, et M. Anji Reddy. « Investigation of Physico-Chemical Parameters to Assess the Water Quality of Himayat Sagar Lake, Hyderabad ». International Journal of Scientific Research 2, n^o 5 (1 juin 2012) : 279–81. http://dx.doi.org/10.15373/22778179/may2013/93.

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Salman, Jasim Mohammed, et Ahmed Joudah Nassar. « Variation of Some Physico-Chemical Parameters and Biodiversity of Gastropods Species in Euphrates River, Iraq ». International Journal of Environmental Science and Development 5, n^o 3 (2014) : 328–31. http://dx.doi.org/10.7763/ijesd.2014.v5.502.

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Potharaju, Raju, et M. Aruna. « Multivariate Analysis to Assess the Physico-Chemical Parameters and Phytoplankton Blooms in A Eutrophic Pond ». International Journal of Research Publication and Reviews 4, n^o 4 (23 avril 2023) : 4480–84. http://dx.doi.org/10.55248/gengpi.4.423.38004.

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V. Ajagekar, V. « Seasonal Variations in Physico - Chemical Parameters of Erandol Reservoir, Kolhapur : Implications for Water Quality Management ». International Journal of Science and Research (IJSR) 12, n^o 11 (5 novembre 2023) : 1498–501. http://dx.doi.org/10.21275/sr231121090504.

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Chhetry, Damodar Thapa, et Joydeb Pal. « Physico-chemical parameters of Titrigachhi Daha ». Nepalese Journal of Biosciences 1 (23 janvier 2013) : 19–25. http://dx.doi.org/10.3126/njbs.v1i0.7465.

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This paper deals with the physico-chemical parameters of the Titrigachhi daha. The maximum air temperature was recorded in rainy season but the water temperature was maximum in summer and lowest in winter season. Transparency, pH, dissolved oxygen, total alkalinity, total hardness were maximum in winter season. Free carbondioxide, chloride and biological oxygen demand were maximum in summer season. The minimum transparency, total alkalinity, total hardness and chloride were recorded in rainy season. Dissolved oxygen and pH, was minimum in summer season. The minimum carbondioxide and BOD were recorded in winter season. Air temperature, water temperature, free carbondioxide, and biological oxygen demand showed positive and significant correlation with each other. Similarly, transparency, pH, dissolved oxygen, total hardness showed positive and significant correlation with each other. Total alkalinity showed positive and significant correlation with chloride. DOI: http://dx.doi.org/10.3126/njbs.v1i0.7465 Nepalese Journal of Biosciences 1: 19-25 (2011)

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Irfan Momin, Shaziya Mohammed. « Statistical Analysis of Physico-Chemical Parameters ». International Research Journal on Advanced Science Hub 2, n^o 8 (25 septembre 2020) : 118–22. http://dx.doi.org/10.47392/irjash.2020.104.

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Adsule, A. A., et Dr G. S. Kulkarni. « Comparative Analysis of Ground Water and Surface Water of Kolhapur based on various Physico-Chemical Parameters ». International Journal of Trend in Scientific Research and Development Volume-2, Issue-4 (30 juin 2018) : 301–4. http://dx.doi.org/10.31142/ijtsrd12899.

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Quiroga Sossa, Brigido Moises, Cristal Taboada Belmonte, Osbaldo Ruben Ticona Huanca, Paola Andrea Mamani Montecinos, José Luis Pérez Ticona, Cristina Ramos Choque, Lizeth Daniela Cervantes Huanca et Valeria Poma Quispe. « Parámetros fisicoquímicos del durazno [Prunus persica (L.) Batsch] y su efecto en la transformación en mermelada ». CIBUM SCIENTIA 2, n^o 2 (23 décembre 2023) : 17–35. http://dx.doi.org/10.53287/xpdj2468np15t.

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Este estudio, llevado a cabo en el Centro de Investigación en Frutas y Hortalizas de la Universidad Mayor de San Andrés, investigó el impacto de los parámetros fisicoquímicos del durazno en la producción de mermelada. Se diseñaron 19 tratamientos agrupados en 5 clusters (TA, TB, TC, TD, TE). Se evaluaron propiedades como índice de forma (IFD), sólidos solubles (°Bx D), pH (pH D), firmeza (FD), y coeficiente de azúcar (CA) en la pulpa, así como sólidos solubles en la mermelada (°Bx M), densidad (DM), y pH en la mermelada (pH M). Los resultados indicaron la influencia de los parámetros del durazno en la mermelada. Un aumento de una unidad en la firmeza de la pulpa se asoció con una disminución de 0,13 g/cm³ en la densidad. Además, un incremento de una unidad en el índice de forma resultó en un aumento de 39,9 °Bx en los sólidos solubles de la mermelada, mientras que el pH de la mermelada disminuyó en 2,09 unidades con un aumento similar en el índice de forma. La evaluación sensorial, realizada con 24 panelistas no entrenados mediante una escala hedónica de 7 puntos, destacó que la mermelada mejor valorada fue aquella elaborada con pulpa triturada, con un contenido de sólidos entre 10 y 14 grados Brix, una relación pulpa-azúcar de 1:07, y una concentración final de sólidos del 60%.

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Panda, Bibhu Prasad, Manas Barik, Biswajita Mahapatra, Siba Prasad Parida, Aditya Kishore Dash et Abanti Pradhan. « Relationship Among the Physico-Chemical Parameters of Soil and Water in Different Wetland Ecosystems ». Asian Journal of Chemistry 32, n^o 7 (2020) : 1681–90. http://dx.doi.org/10.14233/ajchem.2020.22616.

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The quality of life in water bodies depends on their physico-chemical properties and biodiversity. These physico-chemical properties are being disturbed by continuous addition of industrial, municipal and agricultural wastes which make them unfit for different organisms. This study describes the physico-chemical factors in soil and water of all sampled wetlands and the relationship among them in wetland ecosystem. All these analysis were done by using analytical techniques as described by standard methods for examination of water and wastewater. Physico-chemical parameters of water and soil also interlinked and correlated among each other. Sometimes these parameters work as a cycle to maintain the equilibrium in the ecosystem. Higher level of research work is needed to control the source of pollution to wetlands. By controlling the physico-chemical parameters of habitat, the diversity, density and richness of various wetland dependent species can be controlled in wetland ecosystem.

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Bwala Nzitiri, Mathias. « Seasonal Variability of Phytoplanktons in the Non-Point Source Polluted River Nggada, Maiduguri – Borno State, Nigeria ». UMYU Scientifica 1, n^o 1 (30 septembre 2022) : 315–26. http://dx.doi.org/10.56919/usci.1122.040.

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Borno State is the epicenter of Boko Haram crisis which displaced millions of individuals. Maiduguri metropolis which became the principal refuge centre, has witnessed a rapid demographic change, land use and economic activities resulting into intense irrigational practice along the bank of river Nggada. This may result into changes in the physico – chemical parameters of the aquatic ecosystem and the dynamism may disrupt phytoplantonic community. The study was aimed at assessing the seasonal variability of phytoplanktons in non-point source polluted river Nggada of Maiduguri. Water samples for physico -chemical analysis were collected bi-weekly for a period of 11 months at three sampling stations. Physico-chemical parameters, including Dissolve Oxygen (DO), Dissolved Nitrate concentration, Dissolved Phosphorus Concentration, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Surface Water Temperature (SWT) and potential Hydrogen (pH) were determined using standard procedures. Results indicated that all physico – chemical parameters except temperature, DO and pH of the river during both irrigational and non-irrigational regimes were slightly above the National Environmental Standards and Regulations Enforcement Agency’s (NESREA) permissible limits. A total of 7 classes (Cyanophyceae Chlorophyceae, Cryptophyceace, Euglenophyceae, Bacillariophyceae, Crysophyceace and Rhodophyceae) and 16 genera of phytoplanktons were identified. The results further revealed that the irrigation activities (dry season) have impacted on the physico – chemical parameters (pH, DO, TDS, nitrate and phosphate concentrations) of the study area. Remarkably, the changes in the physico – chemical parameters during the irrigational regime (dry season) have not impacted on the abundance and distribution of phytoplanktons. Hence, the non-point pollutants influenced the physico – chemical parameters of the river butalgal abundance and distribution were not influenced by the changes in the physico – chemical parameters of the river. The study thus, recommends the continuous monitoring and systematic effort to conserve the bio-resources and water quality of the river

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TT, Alemu. « Effect of Cooling Rate on Physico-Chemical Properties of Mango Fruit ». Food Science & ; Nutrition Technology 7, n^o 2 (2 octobre 2022) : 1–10. http://dx.doi.org/10.23880/fsnt-16000285.

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Mango (Mangiferaindica L) fruits were consumed for their pleasant taste and flavour. It rich sources of vitamins A, B and C. However, there is huge loss of the mango fruit during storage due to lack of temperature management and use of slow cooling rate. The objective of this study is therefore to investigate the effect of cooling rates on physical and chemical properties of mango fruits subjected to different cooling rates. The study was lied down with one factors randomized complete block design (RBCD) and replicated three times. Mango fruits were subjected to three different cooling rates (0.001, 0.019 and 0.087) through storage at different storage temperature (-1, 4 and -18°C) and evaluated in terms of physicochemical properties of the fruits during the storage. Data were analyzed by using Minitab software and the effect of cooling rate on all response variables measured was analyzed using Analysis of variance and the significance terms were accepted at 95% (p <0.05) confidence level. The result indicated that mango fruits subjected to different cooling rate exhibited significant change for all evaluated parameters. The mango fruits stored at highest cooling rates (0.087) preserves moisture contents from (70.57-64.45% ) and at lowest cooling rates, moisture reduced from (64.73-60.45%) pH increase (3.7-3.78) and Titratable acidity (TA) decrease (0.35-0.30 %) , total solid soluble (TSS) increase from (8.76-11.25 degree brix) weight loss increase (13.6-19.4%) and the ash content of mango fruits stored at highest cooling rates changed from (8.8-6.8%). This could be due to the fact that highest cooling rate (0.087) preserves physico-chemical properties. During this study because of some constraints, some parameters were not included. Therefore, based on the limitation of the work, further research is needed to study the effect of cooling rates on vitamin (A,C and B) and minerals and (protein, carbohydrates, fat), and beta-carotene of mango fruits which are not conducted in this research due to budget and time limitations, large scale cooling room needed. Generally, it was concluded that, highest loss of mango fruits occurred due to inappropriate storage temperature and highest cooling rates (0.087) preserve physico-chemical properties during storage periods.

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Bhargavi Rasakatla et M Aruna. « Analysis of physico-chemical parameters of a fresh water lake in Nizamabad District Telangana State ». World Journal of Biology Pharmacy and Health Sciences 16, n^o 1 (30 septembre 2023) : 021–30. http://dx.doi.org/10.30574/wjbphs.2023.16.1.0408.

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The present study was undertaken to study the physico-chemical parameters of fresh water bodies in Nizamabad district and after survey Ramadugu lake was selected. Lakes are the important water resources and used for several purposes. The water quality of all fresh water environments is assessed by the physico-chemical and biological parameters. The physico-chemical characteristics were studied and analyzed for a period of 1 year from March 2019 to February 2020.water samples were collected from four sampling stations of lake and were analyzed in the laboratory. Physico-chemical parameters such as Colour, Odour, Temperature, PH, TDS, Carbonates, Bicarbonates, Calcium, Magnesium, Total hardness, Total Solids, Chlorides, Nitrates, Nitrites, Sulphates, Silicates, Phosphates, BOD, COD, DO of lake were estimated throughout the year. Analysis was carried out by using the standard methods.

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Kolhe B. G, Kolhe B. G., et Shinde S. M. Shinde S. M. « Comparative Evaluation of Some Physico-Chemical and Microbiological Parameters in Godavari River Basin At Tapovan Area of Nashik ». International Journal of Scientific Research 3, n^o 6 (1 juin 2012) : 485–87. http://dx.doi.org/10.15373/22778179/june2014/164.

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Tewodros, Kumssa, et Bekele Afework. « Phytoplankton Composition and Physico-Chemical Parameters Study in Water Bodies of Abijata-Shalla Lakes National Park (ASLNP), Ethiopia ». Greener Journal of Biological Sciences 4, n^o 2 (11 mars 2014) : 069–76. http://dx.doi.org/10.15580/gjbs.2014.2.1210131023.

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Bharati G, Kolhe, et Shinde Satish M. « Study of Some Physico-Chemical Parameters of Godavari River Water at Ramkund, Nashik With Reference to Correlation Study ». Paripex - Indian Journal Of Research 3, n^o 5 (15 janvier 2012) : 1–3. http://dx.doi.org/10.15373/22501991/may2014/82.

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Malawat, Meena, et Sangeeta Rathore. « Study of Physico-Chemical Parameters with Relation of Zooplankton Density of Ranakpur and Mithri Dam, Pali District, Rajasthan ». International Journal of Science and Research (IJSR) 12, n^o 11 (5 novembre 2023) : 1037–42. http://dx.doi.org/10.21275/mr231115170127.

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Sawane, A. P., M. C. Kale et A. D. Bobdey. « Zooplankton abundance and its correlations with physico-chemical parameters from urban lakeWani, Dist. Yeotmal, Maharashtra. » Environment Conservation Journal 13, n^o 1&2 (18 juin 2012) : 141–44. http://dx.doi.org/10.36953/ecj.2012.131227.

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Some physico-chemical and biological parameters were studied from urban lakeWani, distYeotmal to assess the pollution status. The parameters were studied for the period of one yeari.e. from July 2006 to June 2007. The sample analysis showed great diversity in zooplankton, consisting 65 genera belonging to five groups. The seasonal succession of zooplankton was in the order of summer>winter>monsoon. The physico-chemical parameter such as temperature, pH, CO2, TDS, DO, Sulphate, phosphate have been studied. The correlation analysis was also made between zooplankton and physico-chemical parameter.

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Reddy, G. Srinivas, et T. Venugopala Swamy. « Limnological Studies Related to Physico-Chemical Parameters of Nizamsagar Reservoir, Kamareddy District, Telangana, India ». UTTAR PRADESH JOURNAL OF ZOOLOGY 45, n^o 6 (14 mars 2024) : 11–21. http://dx.doi.org/10.56557/upjoz/2024/v45i63947.

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The Nizamsagar Reservoir is one of the oldest irrigation projects in India, constructed across the Manjeera River, a tributary of the Godavari River. The present study aimed to analyse15 different water parameters of Nizamsagar Reservoir from June 2021 to May 2022 from two different locations. Standard methods were used for the analysis of various physico-chemical parameters, and correlation coefficients were calculated to determine the relationships between different types of physico-chemical parameters by using MS Excel software. All the physico-chemical parameters of reservoir water are within the permissible limits according to the standard methods of APHA and AWWA.

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Abu Bakar, Norshila, N. Othman, Z. M. Yunus, Zawawi Daud, Nur Salsabila Norisman et Muhammad Haziq Hisham. « Physico-Chemical Water Quality Parameters Analysis on Textile ». IOP Conference Series : Earth and Environmental Science 498 (16 juin 2020) : 012077. http://dx.doi.org/10.1088/1755-1315/498/1/012077.

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Ageyeva, Natalia Mikhailovna, Elena Vladimirovna Ulyanovskaya, Anastasia Aleksandrovna Shirshova, Anastasia Nikolaevna Tikhonova, Anton Aleksandrovich Khrapov et Evgenia Anatolyevna Chernutskaya. « PHYSICO-CHEMICAL PARAMETERS OF CIDERS OF VARIOUS MANUFACTURERS ». Fruit growing and viticulture of South Russia 1, n^o 79 (26 janvier 2023) : 242–52. http://dx.doi.org/10.30679/2219-5335-2023-1-79-242-252.

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Oyewusi, Toyese Friday, Jimmy Akinfemi Osunbitan, Gbolabo Abidemi Ogunwande, Teslim Aderibigbe Ademiju, Comfort Oluwaseun Opadoja et Monsuru Olukayode Amoo. « POTENTIAL OF COMPOST EXTRACT ON PHYSICO-CHEMICAL PROPERTIES OF SOIL AFTER HARVEST ». Suranaree Journal of Science and Technology 30, n^o 6 (5 février 2024) : 020027(1–9). http://dx.doi.org/10.55766/sujst-2023-06-e0759.

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In an attempt to improve soil physico-chemical properties for subsequent production of crop, the potential of compost extract was investigated along with effect of its processing parameters on some soil physico-chemical properties after harvest. This compost extract (liquid organic fertilizer) was produced from composted chicken manure under three processing parameters. The parameters are compost/water ratio (1:6, 1:4, and 1:3), immersion period (24, 48 and 72 h) and water temperature (25, 35 and 45˚C). The application of compost extract made was applied to the soil by means of an improvised drip irrigation system to produced two vegetables (A. cruentus and C. argentea) via pot experiment in a greenhouse. The soil physico-chemical properties were analyzed before planting and after harvest using standard methods. The result showed an improvement in the soil physico-chemical properties after harvest. The study shows that processing parameters under different compost/water ratio, immersion period and water temperature significantly affected soil physico-chemical properties. The highest physico-chemical properties of pH (6.53 and 6.59), EC (2.42 and 2.47 mS cm-1), TN (1.68 and 1.79%), TP (7.24 and 7.34 g kg-1) and TK (7.49 and 7.73 g kg-1) were observed for A. cruentus and C. argentea soils, correspondingly after harvest. These were obtained for 1:3 compost/water ratio at 72 h immersion period under water temperature of 25˚C. Hence, compost extract produced was found to be suitable for improvement of soil physico-chemical properties even for subsequent production of vegetable in another planting seasons without any additional soil amendment.

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Hossain, M. I., M. M. Alam, M. Alam, B. M. M. Kamal et S. M. Galib. « Investigation of Phytoplankton and Physico-chemical Parameters in Nursery, Growout and Broodstock Ponds ». Journal of Scientific Research 5, n^o 3 (29 août 2013) : 555–71. http://dx.doi.org/10.3329/jsr.v5i3.14886.

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The study measures the relationship between physico-chemical variables with the cell density of phytoplankton in nursery, growout and broodstock ponds of fish. This study was conducted at Natore Government Fish Farm in Bangladesh from January to June, 2012. The observed physico-chemical variables like water temperature, transparency, dissolved oxygen, pH, ammonia-nitrogen, total alkalinity and total hardness were found within the standard ranges. Phytoplankton belonging to bacillariophyceae, chlorophyceae, cyanophyceae and euglenophyceae were found among the ponds but euglenophyceae with highest abundance was recorded in almost all the ponds. Total abundance of different groups of phytoplankton was recorded as mean (±SD) cell density (cell/l) (62.77±2.16)×104, (47.22±0.69)×104, and (77.12±3.42)×104 in nursery pond, growout pond and broodstock pond, respectively. Overall phytoplankton abundance was more in broodstock pond than in others. Total phytoplankton density has exhibited significantly positive correlation with dissolved oxygen (DO) and inverse relation with water temperature, pH, ammonia-nitrogen and total alkalinity in case of nursery pond. For growout pond, total phytoplankton density has exhibited significantly positive correlation with temperature and transparency, and significantly negative correlation with other physico-chemical characteristics. In case of broodstock pond, total phytoplankton density has no significant relationship with any physico-chemical variables of water. Keywords: Nursery pond; Growout pond; Broodstock pond; Phytoplankton; Water quality, physico-chemical parameters © 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. doi: http://dx.doi.org/10.3329/jsr.v5i3.14886 J. Sci. Res. 5 (3), 555-571 (2013)

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Ohwo, Odafivwotu, et R. Alexander Bekeowei. « Phytoremediation of Physico-chemical Parameters in Wastewater Effluents from Car Wash Bays in Yenagoa Metropolis, Nigeria ». European Journal of Environment and Earth Sciences 2, n^o 6 (7 décembre 2021) : 20–26. http://dx.doi.org/10.24018/ejgeo.2021.2.6.212.

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Surface water pollution through the discharge of untreated wastewater is on the increase globally. Efforts made using conventional techniques had not yielded the needed results. This study was conducted to determine the effectiveness of some native aquatic plants for the removal of some physico–chemical parameters from car wash wastewater effluents in Yenagoa metropolis. The plants used for this study were lemna minor, nymphaea nouchalli, pistia-stratiotes, eichhornia crassipes and ceratophyllum demersum; while the physico-chemical parameters investigated in this study include pH, DO, COD, BOD5, NO3, PO4 and turbidity. The wastewater samples collected from car wash bays were analysed to determine the level of the physico-chemical parameters concentrations using standard methods. The experiment was conducted in a green house for 42 days retention period. The results indicated that the cultured plants reduced the physico-chemical parameters to a minimum level, except DO, which increased in concentration. Therefore, they are considered good bioremediators of the parameters under review and the bioremediation potentials of the plants are in the order of P. stratiotes > L. minor > E. crassipes > N. nouchalli> C. demersum. It is therefore recommended that these plants should be used to treat wastewater effluents based on the investigated physico-chemical parameters.

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Jain, Abhas, et S. K. Singh. « Limnological Studies Related to Physico-Chemical Characteristics of Water in Anasagar Lake, Ajmer, Rajasthan ». International Journal of Advance Research and Innovation 1, n^o 1 (2013) : 3–9. http://dx.doi.org/10.51976/ijari.111302.

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The study deals with the seasonal limnological investigation related to physico-chemical characteristics of water of the Anasagar Lake in Ajmer (Rajasthan). The limnological parameters were tested following standard methods at three sampling sites/stations in the lake. The physico-chemical parameters (temperature, turbidity, pH, DO, BOD, COD, free CO2, total alkalinity, conductivity, TSS, TDS, Chloride, Ammonia, Nitrate, Phosphate, etc.) showed distinct temporal or seasonal variation in the lake. Higher nutrient content (nitrate, phosphate) was present in the lake. This finding also signifies eutrophication/higher trophic level. Water transparency, dissolved oxygen, BOD, total alkalinity, conductivity, CaCO3 hardness, TSS, nitrate and phosphate was correlated with various physico-chemical parameters in the lake. The physico-chemical characteristics of water of the lake revealed the poor water quality in Anasagar Lake.

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Kumar, Sunil, et Vikas Jain. « Analysis of Physico-Chemical Factors of Ramganga River Water in Bareilly District ». Journal for Research in Applied Sciences and Biotechnology 3, n^o 1 (18 mars 2024) : 276–80. http://dx.doi.org/10.55544/jrasb.3.1.45.

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The systematic study was carried out to determine the physico-chemical parameters of water samples of Ramganga River in Bareilly district. The rivers are an essential water resource and used for several purposes. The water quality of all fresh water ecosystems is assessed by the physico-chemical. Water samples were collected from 3 sites along the river and analyzed using standard methods in laboratory. The physico-chemical characteristics were studied and analyzed for a period of 6 months from April 2022 to September 2022. Various physico-chemical parameters such as Temperature, PH, transparency, total dissolved solids, total suspended solids, DO, FCO2, Carbonates, Bicarbonates, chlorides, Calcium, Magnesium, Total hardness of lake were estimated throughout the year.

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Kyrykbaeva, S. T., Z. Kalibekkyzy, A. A. Mayorov, Z. V. Kapshakbayeva et S. K. Zhakupbekova. « EVALUATION OF THE QUALITY OF SALTY SOFT CHEESE WITH THE ADDITION OF A VEGETABLE COMPONENT ». Bulletin of Shakarim University. Technical Sciences, n^o 1(13) (29 mars 2024) : 158–65. http://dx.doi.org/10.53360/2788-7995-2024-1(13)-20.

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The article describes the course of cooking soft salty cheese with the addition of a vegetable component and conducted special studies, product reviews, product quality indicators.The results of the study of physico-chemical, microbiological parameters, physico-chemical parameters of soft salted cheese with the addition of a vegetable component are presented. One of the most important indicators in determining the quality of raw materials and choosing them as raw materials for further processing are its physico-chemical properties and organoleptic characteristics. Microbiological parameters of soft salted cheese, including physico-chemical parameters, were studied in laboratory conditions.In order to produce cheese of guaranteed quality, studies of hop safety parameters were carried out, as well as the physico-chemical composition of dairy raw materials was studied. The stage of administration of the plant extract has been determined.An effective cheese recipe has also been developed. The amount of special sauce for storing the finished product was also calculated, which indicates that the soft cheese dipped in the sauce has a long shelf life and tastes very pleasant.All studies were conducted in the laboratory of the Institute of Cheese Making at the Federal Altai Scientific Center of Agrobiotechnology in Barnaul (Russia) and were taken into account according to a special protocol.

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Bakharev, Vladimir, Marianna Voronina, Alena Gulyaeva et Olesya Nafikova. « Dehydration of Beet Bagasse with Subsequent Extrusion and Their Physico-Chemical Parameters Comparison ». Food Industry 7, n^o 3 (22 septembre 2022) : 25–31. http://dx.doi.org/10.29141/2500-1922-2022-7-3-3.

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Beetroot is a good source of minerals, fiber and biologically active components. The researchers carried on the investigation to study the quantitative changes in dietary fibers and sugars during the drying of red table beet with forced ventilation and subsequent extrusion. They run the comparative analysis of the physico-chemical parameters of beet processing products. To analyze the content of dietary fibers and sugars, a man took beet bagasse: fresh, dried in a drying cabinet with forced ventilation, dried and passed through an extruder. The authors examined drying method effect on the physico-chemical parameters and organoleptic characteristics of beets. The physico-chemical and organoleptic indicators analysis results showed that the extrusion technology use when drying beet bagasse increased the extractive substances yield, as well as the shelf life of dried samples. When drying with forced ventilation, the dietary fiber amount increased by 20 times; and when processing dried beet by extrusion – by 5%. The obtained results provide an understanding of the extrusion technology impact on the physico-chemical, organoleptic qualities of a dry semi-finished product that can be utilized as a natural ingredient in the production technology of functional food products.

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ZH, Melaku. « Analysis of Selected Physico-Chemical Parameters, Nutrients, and Heavy Metals in Drinking Water Samples in Halaba Town, SNNPR, Ethiopia ». Open Access Journal of Waste Management & ; Xenobiotics 5, n^o 1 (2022) : 1–6. http://dx.doi.org/10.23880/oajwx-16000169.

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Residents in the Halaba town, SNNPR, Ethiopia have used tap water as the main source of water for their drinking and domestic purposes. However, the Physico-chemical parameters of tap water in Halaba town have not been studied and this study was aimed to investigate some Physico-chemical parameters and selected heavy metals in tap water samples collected from two sampling sites in Halaba town. All the samples were analyzed for selected heavy metals such as Zn, Cu, Pb Ni, Cr, Fe, Mn, and some Physico-chemical parameters such as EC, pH, TDS, TH, turbidity, K, Ca, Mg, nitrate, and sulfate using Flame Atomic Absorption Spectrometer (FAAS) and Paline test methods, respectively. The mean results of the physicochemical parameters investigated in tap water samples collected from two sampling sites were found to be in the range: EC (193.3–323.3) 𝜇S/cm, pH (7.88–7.9), TDS (96.7–175) mg/L, TH (24-30) mg/L, turbidity (3.93–4.53) NTUs, NO3-1(1.64–1.75) mg/L, SO4-2(1.3–3.3) mg/L. The mean concentrations of heavy metals were found to be in the range: Zn (0.05–0.30) mg/L, Fe (0.25–0.50) mg/L, Cu (0.01–0.04) mg/L, Pb (0.01–0.02) mg/L, Ni (1.86–2.4) mg/L, Cr (0.08–0.14) mg/L, Mn (0.001) mg/L, K (44.3–88.7) mg/L, Ca (180–204) mg/L, Mg (6.3–13) mg/L. The study showed that the concentrations of Pb, Ni, and Cr were slightly higher than the maximum permissible limits recommended by WHO, USEPA, and EU standards whereas concentrations of K and Ca were found to be higher than the maximum permissible limits recommended by WHO. All the other selected physicochemical parameters considered were below the maximum permissible limits recommended by WHO. Furthermore, the concentration of Zn, Cu, Fe, and Mn were found to be below the maximum permissible limits recommended by WHO, USEPA, EU, Australian, Iranian, Indian, Malaysian, Newzlandian, and Ethiopian standards. Therefore, citizens in the Halaba town that uses tap water for their day-to-day domestic activities and drinking purpose could potentially expose to health risks due to high levels of Pb, Ni, Cr, K and Ca. So, it is recommended that the tap water in the study area should be treated before being used for drinking and domestic purposes.

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T.Veni, T. Veni, et Dr J. Mohanraj Dr.J.Mohanraj. « Analysis of Water Quality in Relation to Physico – Chemical Parameters of Groundwater in Selected Areas of Tuticorin District, Tamilnadu. » International Journal of Scientific Research 2, n^o 10 (1 juin 2012) : 1–2. http://dx.doi.org/10.15373/22778179/oct2013/140.

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Damian, Cristina, Ana Leahu, Sorina Ropciuc et Mircea-Adrian Oroian. « Some quality parameters of mustards from the Romanian market ». Ovidius University Annals of Chemistry 29, n^o 2 (1 décembre 2018) : 126–29. http://dx.doi.org/10.2478/auoc-2018-0019.

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Abstract Five commercial mustards, made by different manufacturers, were studied to examine their physico-chemical properties and to establish relationships between those properties. Physico-chemical analysis revealed distinct differences between the mustards in the dry matter and extract contents and smaller differences in the protein, fat and ash levels. Two of the investigated mustards did not satisfy the requirements of the relevant Romanian standard regarding dry matter content. Statistical analysis of the results showed significant linear correlations between the dry matter, fat, protein and ash contents of mustards and some parameters of rheological model.

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Mohanraj, Sivanantham, et Jeganathan Pandiyan. « Annual Variations of Physico-chemical Properties of the Periyakulam Lake, Tiruchirappalli, Tamil Nadu, Southern India ». European Journal of Environment and Earth Sciences 3, n^o 2 (6 avril 2022) : 55–60. http://dx.doi.org/10.24018/ejgeo.2022.3.2.269.

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The annual the physico-chemical variation of the Periyakulam Lake, Tiruchirappalli, Southern India was assessed from January 2011 to December 2013 aquatic life. The study was carried out to examine level of varying physic-chemical parameters such as Water Depth (m), Turbidity (NTU), Salinity (ppt), Dissolved Oxygen (mg/l), pH, Electrical conductivity (µS/cm), Carbonate (mg/l), Bicarbonate (mg/l), Chloride (mg/l), Sulphate (mg/l), Calcium (mg/l), Magnesium (mg/l), Sodium (mg/l), Potassium (mg/l). The physico-chemical parameters have exhibited considerable yearly and variations. The qualitative study revealed of the physico-chemical parameters, which would be very helpful for policy makers to take precautionary measures to save the wetland.

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ELEGBEDE, Vitalique, Dominique KPADONOU, DOSSOU-GBETE Joël et Acakpo Nonvignon Magloire GBAGUIDI. « Physico-chemical characterization of Lake Togbadji ». International Journal of Biological, Physical and Chemical Studies 5, n^o 2 (11 décembre 2023) : 50–66. http://dx.doi.org/10.32996/ijbpcs.2023.5.2.6.

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This study focused on the physico-chemical characterization of Lake Togbadji, located in southwestern Benin. The methodological approach followed was as follows: literature review, sampling and in-situ measurements, analysis of collected samples, and data processing. Parameters such as pH, temperature, dissolved oxygen, TDS, and ORP were determined in-situ, while color, TSS, and other parameters were analyzed in the laboratory. The obtained results were subjected to descriptive statistics, the Wilcoxon test for two samples to determine the impact of different locations on the abundance of microbiological contaminants, and Principal Component Analysis (PCA) using R software version 3.5.0 to group pollution parameters according to different levels and sources of contamination. From our results, it was found that the main sources of pollution in Lake Togbadji are runoff water, various wastewater discharges from artisanal activities, livestock farming, and open defecation. On a physico-chemical level, the recorded levels do not suggest pollution of the lake.

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Prasanthi, N., A. V. V. S. Swamy, K. N. Murty et V. Subhashini. « Studies on water quality parameters in river Gautami- Godavari, Andhra Pradesh ». INTERNATIONAL JOURNAL OF AGRICULTURAL SCIENCES 19, n^o 1 (15 janvier 2023) : 261–65. http://dx.doi.org/10.15740/has/ijas/19.1/261-265.

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The physico-chemical parameters play a imperative role in growth and sustainability of biological diversity in river ecosystem. The present work was carried out for comparative assessment of physico-chemical parameters of Godavari River at the places Kotipalli and Bhairavapalem for a period of two years starting from March-2015 to February-2017. Samples were collected in monthly intervals during this study duration. Analysis of physico-chemical parametersand nutrients was done. We found Salinity and silicate values have more variations in both selected stations (Kotipalli and Bhairavapalem). Salinity showed highest values (35.01 ppt) at Bhairavapalem (April, 2016) and lowest salinity observed in Kotipalli July 2015. Silicates were noticed low at Bhairavapalem and increased at Kotipalli. The values of silicate were ranged between 0.82mg/L (April 2016) to 16.43mg/L (November 2016) at Kotipalli and we noticed 0.23mg/L (April 2016) to 10.21mg/L silicate values at Bhairavapalem. The study revealed that quality of Godavari river water is highly affected negatively due to industrial, agricultural and human activities.

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Patharkar, S. R., S. N. Shendge et A. P. Khapre. « Study of physico-chemical parameters of orange (Citrus reticulate Blanco) for the development of orange wine ». Journal of Applied and Natural Science 9, n^o 4 (1 décembre 2017) : 2305–8. http://dx.doi.org/10.31018/jans.v9i4.1528.

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Physico-chemical properties are an essential factor during processing and preservation of food. The retention and changes in physico-chemical properties depends upon the processing technique. In this work, physicochemical parameters of orange like vitamin C (ascorbic acid), pH, total soluble solids (TSS), % acidity, temperature and color were studied with all the optimized conditions of fermentations for the development of orange wine. The fermentation of the fruit juice was completed within 7 days period at temperature 27oC, pH 4.5 and total soluble solids of 24oBrix with an inoculum level of 10% (v/v). Thus, orange wine with ethanol content of 8.5% (v/v) was prepared from the orange variety ‘Nagpur Santra’ (Citrus Reticulata Blanco) in controlled physico-chemical parameters.

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Goliáš, J., P. Mýlová et A. Němcová. « A comparison of apple cultivars regarding ethylene production and physico-chemical changes during cold storage ». Horticultural Science 35, No. 4 (15 décembre 2008) : 137–44. http://dx.doi.org/10.17221/653-hortsci.

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Measurements of titratable acidity, soluble solids, firmness, ethylene production and weight loss were made for five apple cultivars held in cold storage for 100 days. Carbosieve G in the traps of the enrichment column, which has only a moderate affinity for light hydrocarbons, was found to meet the requirements for the optimal thermal desorption of ethylene (130°C for 2 minutes) from the enrichment column to the analytical column. ANOVA showed significant differences in all these five parameters between the five cultivars Golden Delicious Reinders, Resista, Topaz, Meteor and Rubinstep, and also in the course of storage. In all cases, the changes in titratable acids measured during storage were especially significant, but the observed changes in sugar levels, as measured by refractometry, were too variable to be useful in this context. High rates of ethylene production impacted probably only indirectly on the loss of firmness and the other parameters which were measured. Discriminant analysis of the measurements of firmness, ethylene production and titratable acid provided the best means of differentiating the cultivars, although Golden Delicious Reinders and Resista still could not be completely separated. Other parameters (soluble solids and loss in weight) did not contribute to the discriminant resolution.

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Merit, Y. Anita, et V. Robin Perinba Smith. « Seasonal Variations in Physico-Chemical Parameters of Manakudy Estuary, Southwest Coast of India ». UTTAR PRADESH JOURNAL OF ZOOLOGY 44, n^o 19 (6 septembre 2023) : 183–88. http://dx.doi.org/10.56557/upjoz/2023/v44i193634.

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The present study was carried out to determine the seasonal variations in physico-chemical characteristics of water in Manakudy estuary Southwest coast of India, from June 2020 to May 2022. The study revealed that the physico-chemical parameters like temperature, hydrogen ion concentration, salinity, dissolved oxygen, nutrients like nitrate, nitrite, ammonia and total phosphorous exhibited considerable seasonal and spatial variations. The study showed that the Manakudy estuary is in a good state of health.

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Leblud, J., L. Moulin, A. Batigny, P. Dubois et P. Grosjean. « Technical Note : Artificial coral reef mesocosms for ocean acidification investigations ». Biogeosciences Discussions 11, n^o 11 (7 novembre 2014) : 15463–505. http://dx.doi.org/10.5194/bgd-11-15463-2014.

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Abstract. The design and evaluation of replicated artificial mesocosms are presented in the context of a thirteen month experiment on the effects of ocean acidification on tropical coral reefs. They are defined here as (semi)-closed (i.e. with or without water change from the reef) mesocosms in the laboratory with a more realistic physico-chemical environment than microcosms. Important physico-chemical parameters (i.e. pH, pO2, pCO2, total alkalinity, temperature, salinity, total alkaline earth metals and nutrients availability) were successfully monitored and controlled. Daily variations of irradiance and pH were applied to approach field conditions. Results highlighted that it was possible to maintain realistic physico-chemical parameters, including daily changes, into artificial mesocosms. On the other hand, the two identical artificial mesocosms evolved differently in terms of global community oxygen budgets although the initial biological communities and physico-chemical parameters were comparable. Artificial reef mesocosms seem to leave enough degrees of freedom to the enclosed community of living organisms to organize and change along possibly diverging pathways.

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Sangve, K. B. « Impact of physico-chemical parameters on zooplankton diversity of freshwater reservoirs around Amravati District, Maharashtra ». Environment Conservation Journal 14, n^o 3 (21 décembre 2013) : 131–35. http://dx.doi.org/10.36953/ecj.2013.14322.

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Impact assessment was carried out on the zooplankton diversity of Pohra, Wadali and Chhatri surface water reservoirs around Amravati with respect to their physico-chemical characteristics. During course of study zooplankton were represented by five major groups i.e. Ostracoda, Rotifera, Cladocera, Protozoa and Copepoda. High value of physico-chemical parameters and low zooplankton diversity were recorded in Chhatri reservoir, moderate in Wadali lake and low value of physico-chemical parameters and high zooplankton diversity were recorded in Pohara lake. The Chhatri reservoir was found to contain most of the pollution indicator species. Wadali reservoir also exhibited few pollution tolerant species. Prominent among them were Ceratodaphnia, Lepadella, Monostyla, Rotarria, Cyclops, Diaptomus and Ectocyclops. The water in all the reservoirs was found to be eutrophic in the order of Pohra > Wadali > Chhatri.

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