Journal articles: 'Physicochemicals'

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Wan Sulaiman, Wan Syibrah Hanisah, Rashidi Othman, Nur Hanie Abd Latiff, Razanah Ramya, and Farah Ayuni Mohd Hatta. "Physicochemical Properties for Toyyib Environmental Assessment on Lake Water Quality: A Mini Review." Halalpshere 3, no. 1 (2023): 31–39. http://dx.doi.org/10.31436/hs.v3i1.67.

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As Malaysia strives to become industrialised, numerous water bodies are increasingly dumping grounds for chemicals, sewage, and pollutants. It is considered that pollutant substances are continuously channelled into water bodies and then transferred into organic and inorganic particles, nutrients, pesticides, and herbicides that directly affect the aquatic ecosystem. This paper aims to study the overview of physicochemicals properties for lake water quality in relation to Toyyib environmental assessment. Malaysian water quality assessments are based on several rules, including the National Lake Water Quality Criteria and Standard, Urban Storm Water Management Manual for Malaysia, and National Water Quality Index Standard. As a result of the transmission of physicochemical qualities, water contaminants inflict harm not only on aquatic ecosystems but also on the safe water for human use. These studies indicate the water quality measurements or parameters for assessing the water quality for the Toyyib environment and establish the list of physicochemical properties for water quality assessment on the lake. On the other hand, the methodology applied for each parameter was also studied and presented.

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Ishido, Masami. "The Modification of Biocellular Chemical Reactions by Environmental Physicochemicals." Progress of Theoretical Physics Supplement 173 (2008): 124–33. http://dx.doi.org/10.1143/ptps.173.124.

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Nasution, S., G. Sihombing, and M. R. Ramanda. "Anti-fungal of edible film from cassava starch added with cinnamon and its physicochemical characteristics as environmentally friendly coffee packaging." IOP Conference Series: Earth and Environmental Science 1302, no. 1 (2024): 012084. http://dx.doi.org/10.1088/1755-1315/1302/1/012084.

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Abstract Hydrocolloids, lipids, and other naturally digestible components are used to make edible film, a type of environmentally friendly packaging. Cassava starch is a form of hydrocolloid that is used as the major component to create edible films. Dry items like coffee grounds enable fungus growth, lowering the quality of the coffee. This study will examine the impact of cinnamon powder addition on edible film properties such as antifungals, physicochemicals, and sensory characteristics. This study had a random design with two replications. The collected data were examined using a one-way ANOVA test, followed by Duncan’s test. The results demonstrated that the diameter of the clear zone increased with increasing cinnamon powder concentration, indicating that the edible film’s capacity to block fungal growth was also increasing. With the addition of cinnamon powder, the physicochemical properties of the edible film were considerably changed. The sensory test revealed that the addition of cinnamon powder significantly changed the aroma but not the taste and color.

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SINGH, SWETA, AJAY KUMAR SINGH, HARISON MASIH, and KUNAL SINGH. "ASSESSMENT OF FERMENTATION EFFECT ON PHYSICOCHEMICAL PROPERTIES OF PEARL MILLET FLOUR." Asian Journal of Microbiology, Biotechnology & Environmental Sciences 25, no. 02 (2023): 243–49. http://dx.doi.org/10.53550/ajmbes.2023.v25i02.010.

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–The present study was undertaken to evaluate various physicochemicals of different pearl millets varieties (NANDI 65 and PIONEER 8885) proximate analysis like, moisture, protein, fat, ash, carbohydrate were evaluated. Fermentation at 24 hrs, 48 hrs and 72 hrs and pure culture Lactobacillus fermentum (MTCC 903) was performed. Analysis revealed increase in moisture content and fat content and a decrease in carbohydrate and protein content during fermentation.

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Nurjannah, Isnawati, and Cahyaning Rini Utami. "Karakteristik tepung nanas varietas queen (Ananas comosus L.Merr) termodifikasi metode foam mat drying." Teknologi Pangan : Media Informasi dan Komunikasi Ilmiah Teknologi Pertanian 13, no. 1 (2022): 121–33. http://dx.doi.org/10.35891/tp.v13i1.3008.

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Ananas comosus L. Merr in Indonesia has a very large production rate but the shelf life is relatively short. Alternatives increase the shelf life of pineapple fruit made in the form of flour. The quality of pineapple flour is determined by the drying method so that modifications to the method using foam mat drying with variations in the addition of maltodextrin and tween 80. This study aims to find out the effect of increasing the concentration of maltodextrin and tween 80 on the physicochemicals of pineapple flour so that pineapple flour is obtained that has good characteristics. The research method using faktorial RAK consists of 2 factors. The first factor of maltodextrin concentration (10%,15%,25%) and the second factor of tween 80 percentage (0.1%, 0.3%) repeated 3 times resulted in 18 attempts. Analysis of physicochemical data is analyzed using ANOVA statistics. If it's a real difference in the Tukey test. Organoleptic testing uses friedman's method. The best treatment of physicochemical and organoleptic analysis uses the Effectiveness Index method. The best research results of pineapple flour on physicochemical and organoleptic content are found in N3T2 treatment (maltodextrin 25% and tween 80 0.3%) with characteristics: antioxidant activity 45.57 mg/ml, vitamin C levels 92.45 mg/100g, water content 5.98%, ash content 0.61%, color intensity L 58.49, color a* 29.30 and color b* 26.90 and organoleptic color 4.33 (likes), texture 2.83 (sufficient).

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Konan, Sylvestre Kongoza. "Controlled production trials of conôro, A natural condiment." International Journal of Biomolecules and Biomedicine (IJBB) 18, no. 1 (2024): 1–10. https://doi.org/10.5281/zenodo.13733945.

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Fermentation trials of kapok, baobab, and okra seed powders were conducted using microbial strains of Bacillus and lactic acid bacteria isolated from the natural culinary condiments « Conôro » produced in the localities of Bondoukou, western of Côte d’Ivoire. Microbiological, organoleptic, and physicochemical characteristics were determined. These results indicate that the microbial loads of lactic acid bacteria and Bacillus are N= 1.5×10^8/100 g and N=9.1×10^8/100 g with an inoculum volume Vi=10 mL, yielding a culinary condiments with optimal parameters for evaluating the effect of selected potential starter microbial strains. The levels of physicochemicals compounds are high and similar to those of “Conôro” condiments produced under natural conditions. The various culinary condiments produced with bacterial strains can be used as seasonings to enhance the taste of meals. They can also be used to address nutritional deficiencies among malnourished populations in certains regions of the world. published by the  International Journal of Biomolecules and Biomedicine (IJBB)

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Assanvo, Justine Bomo, Georges N’zi Agbo, Pierre Coulin, Christoph Heuberger, and Zakaria Farah. "Production Methods and Physicochemical Characteristics of Cassava Inoculum and Attiéké from Southern Côte d’Ivoire." Journal of Food Research 8, no. 6 (2019): 18. http://dx.doi.org/10.5539/jfr.v8n6p18.

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Atti&eacute;k&eacute; is a food from C&ocirc;te d&rsquo;Ivoire exported today in several countries. For evaluating production processes, determinant factors and quality attributes of atti&eacute;k&eacute;, a production survey and a physicochemical study were carried out. The survey included 170 producers from the departments of Abidjan, Dabou and Jacqueville, major production areas. Traditional atti&eacute;k&eacute; (Adjoukrou, Ebri&eacute;, Alladjan) and a commercial type Garba were investigated for physicochemical analyses. The cassava variety (98% of producers) had no effect on traditional cassava inoculum but had an impact on atti&eacute;k&eacute; quality. The step of fermentation is necessary. The difference between studied atti&eacute;k&eacute; related to microflora of inoculum whose identification may provide adequate explanations on the product. Respect for the various steps of manufacturing process is also essential. Physicochemicals confirmed observed differences between atti&eacute;k&eacute; types. Organoleptic characteristics are criteria of differentiation between atti&eacute;k&eacute;. The quality of preference is well-made grains without fibers. The results obtained also highlighted the risks faced by regular consumers of Garba due to its high cyanide content (12 mg/100g MS) compare to other atti&eacute;k&eacute; (4.41 mg/100g MS).

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Kebede, B. Amare, Negussie F. Bussa, and Tsegu Kiros. "Commercial Peanut Cultivars for the Improvement of Seed Physicochemicals and Fatty Acids." Vegetos- An International Journal of Plant Research 30, no. 3 (2017): 99. http://dx.doi.org/10.5958/2229-4473.2017.00159.8.

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Widyatama, F. X. G. S., W. Wilopo, and S. A. Broto. "Groundwater investigation in the Batang Integrated Industrial Park, Central Java, Indonesia." IOP Conference Series: Earth and Environmental Science 1311, no. 1 (2024): 012034. http://dx.doi.org/10.1088/1755-1315/1311/1/012034.

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Abstract Batang Integrated Industrial Park (BIIP), Central Java, Indonesia, needs the support of water sources, one of which is groundwater. In addition, industrial waste also can contaminate the groundwater. Therefore, assessing groundwater potential and quality is vital for an environmental baseline to manage sustainable groundwater resources. This research aims to identify the subsurface geology, especially the aquifer system and physicochemicals of groundwater, unprecedented in BIIP. The aquifer system determined the research method through geological surface mapping and geoelectrical surveys. Physicochemical properties, including temperature, pH, total dissolved solids (TDS), and electrical conductivity (EC), were directly measured in wells and springs in the industrial areas. The result shows that the BIIP is dominated by sand, silt, and clay, with sand as the primary aquifer located in-depth 1.35 to 47 meters, concentrated mainly in the western region and towards the east, decreasing as an unconfined aquifer. Groundwater flows from the south toward the Java Sea in the north. Groundwater has a temperature of around 27.3–30.9°C, pH 5.26–7.47, TDS 49–568 mg/L, and EC 100 – 613 μs/cm. It indicates that the quality and quantity of groundwater in the BIIP are quite suitable for use as raw water.

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Momoh, A.O, T.T. Adebolu, and A.O Ogundare. "The Effect of Temperature on the Antibacterial and Physicochemical Properties of Fermenting Beniseeds (Sesamum indicum linn)." Greener Journal of Agricultural Sciences 2, no. 8 (2012): 432–40. https://doi.org/10.15580/GJAS.2012.8.111212252.

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The effect of temperature on the antibacterial property of fermenting beniseed was assessed on six diarhoeagenic bacteria by keeping the fermenting seeds at 40C and 290C respectively. Both the liquor and the slurry were used in this study. The pH, total titratable acidity, microbial load and the microflora of the samples kept at the two different temperatures was determined daily for 7 days. The results showed that the liquor kept at 290C had its highest antibacterial activities after 24hrs of fermentation while the sample kept at 40C had its highest antibacterial activities after 72hrs of fermentation. The highest inhibitory effect was observed on B.cereus with zone diameter of 42mm by the sample kept at 290C and 36mm the sample kept at 40C. This result, when compared with standard commercial antibiotics showed that the fermenting liquor is more effective against four of the six bacteria used. The microbial load of the fermenting liquor increased from 2.4 x104 cfu/ml to 9.2x106cfu/ml in the sample kept at 290C and 2.4x104 cfu/ml to 2.8 x105 cfu/ml in the sample kept at 40C by day 4. Microorganisms found to be associated with the fermentation are Lactobacillus acidophilus, Pediococcus cerevisiae and Leuconostoc mesenteroides. The pH of the fermenting liquor decreased from 5.50 at day 0 to 4.90 by day 4 for the sample kept at 40C while it decreased to 3.80 by day 4 for the sample kept at 290C. The total titratable acidity for the sample kept at 40C was highest by day 1 with a value of 27.00 and lowest by day 6 with a value of 10.00 while the one kept at 290C recorded the highest value of 56.10 by day 1 and lowest value of 15.50 by day 4. Since the fermented liquor significantly inhibited the growth of the test organisms used, it is therefore suggested that in the absence of antibiotics, fermented beniseed liquor can be used to treat diarrhoea within 24hours in rural areas where they may not be quick access to conventional antibiotics and can be used up to seven days when preserved in refrigerator to combat diarrhoea caused by these organisms.

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Pascale, Banga Medjo, Bilong Bilong Charles Félix, and Zébazé Togouet Serge Hubert. "Spatio-Temporal Distribution of Phytoplankton and Water Quality of Some Rivers of Haute Sanaga Department (Central Africa)." Journal of Biology and Life Science 14, no. 1 (2022): 1. http://dx.doi.org/10.5296/jbls.v14i1.20181.

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In Cameroon, rivers are subjected to physicochemical disturbances, which increase the degradation of water quality. The aim of this study was to determine the spatio-temporal diversity of the phytoplankton groups and to evaluate the environmental parameters of the sampling sites in order to assess the quality of water in two hydrographic networks. Physicochemicals analyzes were carried out according to the standard methods while phytoplankton organisms were harvested by direct sampling and analyzed by the Utermöhl method. The analysis of Ammonia Nitrogen, Dissolved Oxygen, Electric Conductivity, Nitrates, Orthophosphates, pH, Temperature, and Turbidity.of water revealed the poor state of health of the water. Data from the Long Dry Season differed significantly (p < 0.05) from those recorded in other seasons. The phytoplankton communities were made up of Chlorophyta, Chrysophyta, Cyanophyta, and Euglenophyta with 11 classes dominated by Bacilliarophyceae (12 210 Ind/mL) and Cyanophyceae (6 208 Ind/mL). Phytoplankton densities were higher the Long Rainy Season and much lower in the Small Dry Season than in the Long Dry Season. Station near NODISCAM indicated significant organic pollution under the effect of agro-industrial discharges operating upstream of this company. For this station, the different values showed significant differences (p < 0.05) from one station to another. Finally, spatio-seasonal variations of phytoplankton densities showed logical responses to changes of physicochemical conditions in the environment. This work highlights the need to treat wastewater from collection channels before its dump into the natural environment, to prevent progressive eutrophication of the receiving aquatic environment, and poisoning by water consumption.

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Dynkowska, Wioletta. "Rye (Secale cereale L.) arabinoxylans: molecular structure, physicochemicals properties and the resulting pro-health effects." Plant Breeding and Seed Science 81 (December 7, 2020): 19–38. http://dx.doi.org/10.37317/pbss-2020-0002.

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Arabinoxylans are an essential component of dietary fiber, and their health-promoting properties are determined mainly by the content and structural features their biopolymers. Rye bread is particularly rich in these compounds; their unique features in the context of content and chemical structure of rye arabinoxylans make it a valuable component od daily diet. Long-term studies have shown the positive effect of these compounds in the aspect of prevention of civilization diseases such as type 2 diabetes, obesity, and cardiovascular diseases. Among the description of the physicochemical properties and diversity of arabinoxylans, the article contains a collection of the most important reports regarding the health-promoting effects of these polymers, as well as their metabolism in the human body.

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Cho, Kye Man, Hee Yul Lee, Su Cheol Kim, et al. "Investigating alterations of nutritional constituents, antioxidant abilities, and physicochemicals in aging processes of ginseng sprouts." Heliyon 10, no. 14 (2024): e34341. http://dx.doi.org/10.1016/j.heliyon.2024.e34341.

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Napitupulu, S.St.Pi, M.Sc, Romauli Juliana, and Yuliati H. Sipahutar. "Effectiveness of Preservation Methods on Quality of Mangrove Crab (Scylla serrata)." PELAGICUS 4, no. 3 (2023): 161. http://dx.doi.org/10.15578/plgc.v4i3.14100.

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Mangrove crab (Scylla serrata) was one of the fisheries export commodities and also got high demand in traditional markets, mini markets, and supermarkets. Inadequate storage and inappropriate handling during processing lead to decreasing weight and quality of mangrove crabs. The present study aims to investigate the effectiveness of different preservation methods of mangrove crabs on quality and physicochemicals to inhibit quality deterioration. The preservation methods are cold, frozen, and live and the period of storage is between 0, 2, 5, 8, and 12 days. The obtained result showed that frozen storage is longer than cold and lived storage to maintain quality (organoleptic, moisture level, TVB, and pH). Mangrove crabs are kept alive is better than frozen and cold storage to maintain weight loss.

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Seo, Woo Duck, Jun Young Kim, You-Chun Song, et al. "Comparative analysis of physicochemicals and antioxidative properties in new red rice (Oryza sativa L. cv. Gunganghongmi)." Journal of Crop Science and Biotechnology 16, no. 1 (2013): 63–68. http://dx.doi.org/10.1007/s12892-012-0057-3.

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Taufiq-Yap, Y. H., C. K. Goh, G. J. Hutchings, N. Dummer, and J. K. Bartley. "Influence of Milling Media on the Physicochemicals and Catalytic Properties of Mechanochemical Treated Vanadium Phosphate Catalysts." Catalysis Letters 141, no. 3 (2010): 400–407. http://dx.doi.org/10.1007/s10562-010-0508-8.

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Diarra, Mamadou Lamine, Mahamane Haïdara, Madani Mariko, Kayatou Dao, Djeneba Coulibaly, and Rokia Sanogo. "Evaluation de la qualité botanique, physicochimique, phytochimique et de l’activité anti-radicalaire de la pulpe de fruits des échantillons de Ziziphus mauritiana Lam (Rhamnaceae), récoltés au Mali." European Scientific Journal, ESJ 18, no. 24 (2022): 209. http://dx.doi.org/10.19044/esj.2022.v18n24p209.

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Au Mali, Ziziphus mauritiana est une plante alimentaire et médicinale utilisée dans la prévention et la prise en charge de la malnutrition. Ce travail rentrait dans le cadre de la valorisation des plantes alimentaires avec comme objectif, l’évaluation de la qualité botanique, physicochimique, phytochimique et de l’activité anti radicalaire des fruits de Ziziphus mauritiana largement consommés au Mali. Les fruits analysés ont été achetés dans les régions de Mopti, Nioro, Ségou et Sikasso. Les caractères macroscopiques, organoleptiques et granulométriques ont été examinés en se basant sur les organes de sens tandis que les éléments microscopiques étaient observés au microscope. Les éléments physicochimiques et phytochimiques ont été déterminés en utilisant des méthodes standards de laboratoire. L’activité anti radicalaire a été évaluée en utilisant le test de réduction du radical DPPH par CCM. Les résultats ont montré que les échantillons récoltés dans différentes localités présentent globalement les mêmes caractères botaniques, physicochimiques, phytochimiques et une activité antiradicalaire. Ces caractères peuvent servir d’éléments de contrôle des fruits de Ziziphus mauritiana en vue de son utilisation pour la prévention et la prise en charge de la malnutrition.  In Mali, Ziziphus mauritiana is a food and medicinal plant used in the prevention and management of malnutrition. For the valorization of food plants, the objective of this work was to evaluate the botanical, physicochemical, phytochemical quality and the antiradical activity of the fruits of Ziziphus mauritiana widely consumed in Mali. The analyzed fruits were purchased in the regions of Mopti, Nioro, Ségou and Sikasso. The macroscopic, organoleptic and granulometric characters were examined based on the sense organs while the microscopic elements were observed under the microscope. Physicochemicals and phytochemicals were determined using standard methods. The anti-radical activity was evaluated using the DPPH radical reduction test by TLC. The results showed that the samples collected in different localities generally present the same botanical, physicochemical, phytochemical characters and an antiradical activity. These characters can serve as fruit control elements of Ziziphus mauritiana in view to its use for the prevention and management of malnutrition.

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II, Ujah, Onyishi CK, and Okechukwu OC. "An assessment of the underground water collected from Ogbete Area Enugu State, Nigeria." World Journal of Biology Pharmacy and Health Sciences 14, no. 1 (2023): 210–15. https://doi.org/10.5281/zenodo.8037680.

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Water contamination has become a global challenge which must be tackled. This study examined the contamination level of water in four locations at Ogbete area Enugu state. Carters street had the highest pH of 5.23 which is below the WHO standards limits for drinking water. The conductivities ranged from the highest conductivity 1445 µs/cm, which is below the WHO limits (8-10,000 µs/cm), TDS (1000 mg/l., TSS (WHO (500 mg/l). For alkalinity, the four locations were all below the (150 mg/l) standard set by World Health Organisation. Results showed that most of the physicochemical, biological and heavy metals parameters considered in this study were significantly above the permissible or allowed by WHO. It is therefore recommended that the water should be treated before use.

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Doboy, Elie Kolwa, Henriette Zangue Adjia, and Richard Kamga. "Production and Characterization of Rice Husk Biosorbent from Far North Cameroon." Environment and Pollution 8, no. 2 (2019): 1. http://dx.doi.org/10.5539/ep.v8n2p1.

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The objective of this study is the production and the characterization of rice husk biosorbent. In fact, the biosorbent has been obtained by phosphoric acid treatment; its physicochemicals characteristics such as point of zero charge, specific surface, iodine number and chemicals functions have been determined. The analysis indicaded that, the point of zero charge is 8.7; for the pH value less than 8.7, the biosorbent surface is posotively charged and for pH value higher than 8.7, the biosorbent surface is negatively charged. The biosorbent iodine number is 1560.87&plusmn;1 mg/g, it means that, the biosorbent is constituted in majority of microspores. Furthermore, the specific surface of biosorbent is 104.45&plusmn;1m2/g, it is five times as big than untreated rice husk obtained by Dada and al., (2012). Acid treatment improve the porosity of biosorbent. Infrarouge spectrum present ether and aromatic functions.

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Seo, Woo Duck, Jun Young Kim, Dong-Soo Park, et al. "Comparative analysis of physicochemicals and antioxidative properties of new giant embryo mutant, YR23517Acp79, in rice (Oryza sativa L.)." Journal of the Korean Society for Applied Biological Chemistry 54, no. 5 (2011): 700–709. http://dx.doi.org/10.1007/bf03253148.

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Dávila-Ramírez, J. L., L. Avendaño-Reyes, U. Macías-Cruz, et al. "Fatty acid composition and physicochemical and sensory characteristics of meat from ewe lambs supplemented with zilpaterol hydrochloride and soybean oil." Animal Production Science 57, no. 4 (2017): 767. http://dx.doi.org/10.1071/an15311.

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The effects of supplementation of zilpaterol hydrochloride (ZH; 0 or 10 mg/lamb daily) and soybean oil (SBO; 0% or 6%) on carcass traits, body fat deposition, chemical, physicochemical, sensory quality, and fatty acid composition of the longissimus thoracis muscle (LTM) of ewe lambs were studied using a randomised complete design with a 2 × 2 factorial arrangement. After a 32-day feeding period, all ewes were slaughtered and LTM collected. Interactions between ZH × SBO were not observed (P > 0.05) for any of the variables evaluated. Feedlot performance was not modified (P > 0.05) by ZH and SBO supplementation. Biological yield and hot carcass weight were increased by ZH supplementation (P < 0.05). ZH and SBO supplementation did not alter body fat deposition (kidney, pelvic and heart, renal, thickness and intramuscular fat) and the empty bodyweight (P > 0.05). Meanwhile, feeding ZH decreased colour parameters (L*, a*, b* and CHROMA) (P < 0.05), but not others characteristics of LTM (P > 0.05). Sensory panelists observed an increase in appearance (P < 0.001) by ZH supplementation. Additionally, ZH decreased (P < 0.05) the content of C20:5n3 (eicosapentaenoic acid), C22:6n-3 (docosahexaenoic acid) and total omega-3 fatty acids, compared with the zero ZH group. Physicochemicals and sensory characteristics, and fatty acid composition of meat were not modified by SBO (P > 0.05). In conclusion, ZH supplementation to ewe lambs increased biological yield and hot carcass weight, without changes in body fat deposition and decreased eicosapentaenoic acid, docosahexaenoic acid and omega-3 contents and caused a decrease in colour of LTM. However, feeding SBO caused no changes in the carcass or meat quality traits and minimal changes in fatty acid composition of LTM.

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Nashed, Ghassan. "Annealing Temperature Effect on Properties of Chemically Deposited PbTe Films and Bulk." Trends Journal of Sciences Research 2, no. 2 (2015): 56–63. http://dx.doi.org/10.31586/physicochemical.0202.02.

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Lachache, Salih, Mohamed Nabou, Touhami Merzouguui, and Abdelouahab Amroune. "Hydrochemistry and origin of principal major elements in the groundwater of the Béchar–Kénadsa basin in arid zone, South-West of Algeria." Journal of Water and Land Development 36, no. 1 (2018): 77–87. http://dx.doi.org/10.2478/jwld-2018-0008.

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AbstractBéchar region is located in the southwest of Algeria, characterized by an arid climate with a Saharan tendency. It is subject to an increasing demand for water like all the great agglomerations due to the economic and demographic development. The groundwater of region is deteriorating because of the economic development, and the rapid growth of population. This article is devoted to the study of hydrochemistry and processes of mineralization of groundwater in this region. The results of physicochemicals analyses shows the same chemical facies of the chloride and sulphate-calcium and magnesium type, with high mineralization from North-East to South-West to the outlet of Béchar–Kénadsa basin. The determination of the mineralization origin and the main major elements were approached by multivariate statistical treatment and geochemical. This method has identified the main chemical phenomena involved in the acquisition of mineralization of water in this aquifer. These phenomena are mainly related to the dissolution of evaporite formations, the infiltration of runoff water and direct ion exchange and mixing. However, the high mineralization anomaly is observed at the centre of Béchar–Kénadsa basin progressively by going to the outlet of this basin.

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Zainab Abdul Al-Ammer Kadhem, Jameel Saad Al-Sariy, and Salih Mahdi Ali. "Seasonal distribution study of mosquito species (Culicidae: Diptera) in Al- Naamania salt Basin north western." Journal of Wasit for Science and Medicine 7, no. 1 (2023): 124–35. http://dx.doi.org/10.31185/jwsm.334.

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The influence of physical and chemical parameters on the abundance and diversity of Mosquito Species were studied in Al- Naamania Salt Basin North Western Al-kut City during a period of seven months (October 2012- April 2013).Three species belong to three genera of Culicidae were identified from a total of (339) larvae: Aedes caspius (Pallas) (66.o7%) was the most abundant during the period of the study,Culex pipiens (Linnaeus) (18.58%) and Culiseta longiareolata (Macquarrt) (10.02%) .During this study, some of Physicochemicals parameters, such as water pH, Total Dissolved Solids (TDS), water temperatur , water salinity (NaCl), Electrical conductivity (EC) were measured. The results from Statistical analysis showed that Aedes caspius has significant positive correlation with EC (P>0.001) and positive correlation but not significant with NaCl, TDS, PH and temperature. Culex pipiens has negative correlation not significant with EC, NaCl, TDS, PH and temperature. Finally Culiseta longiareolata has negative significant correlation with EC, PH (p>0.05) and temperature (p>0.01) also its has negative correlation but not significant with NaCl and TDS. According to principal component analysis (PCA) there are no relationships between the species themselves.

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Banjare, Sangeeta, and Pooja Yadav. "Assessment of Environmental Degradation Caused By Industrialization and Economic Problems and Environmental Justice." International Journal of Research Studies on Environment, Earth, and Allied Sciences 1, no. 2 (2024): 40–45. https://doi.org/10.5281/zenodo.15011272.

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Abstract This study aims to assess the impact of industrialization on the environment, focusing on the economic problems that have contributed to environmental degradation.(Singh,  By examining the concept of environmental justice, we hope to shed light on how marginalized communities are disproportionately affected by these issues. Through a combination of quantitative analysis and case studies, we will explore potential solutions to address these complex challenges and promote sustainability in the face of rapid industrial growth. Concepts such as climate change and social justice can no longer be ignored, and it is imperative that we all make conscious choices in our daily lives to contribute to a better world. By reducing our carbon footprint, supporting fair trade products, and advocating for policies that protect the environment and human rights, we can make a significant impact. We can all work together to bring about positive change and create a society that is more equitable and sustainable. Different locations in Korba and JanjgirChampa were used to gather water samples. A few parametersThermometers and pocket pH and TDS meters are used to measure temp-erature, pH, and TDS on different site and after samplingTemperature, pH, TDS, DO, COD, BOD and other parameters are examples of physicochemicals parameter.

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Nisfi, Lailatun, and Khoirin Maghfiroh. "THE EFFECT OF ADDING DRIED MORINGA OLEIFERA L. ON PHYSICOCHEMICAL CHARACTERISTICS AND ORGANOLEPTICS PROPERTY CRACKERS." Jurnal Penelitian dan Kajian Ilmiah Kesehatan Politeknik Medica Farma Husada Mataram 10, no. 1 (2024): 9–15. http://dx.doi.org/10.33651/jpkik.v10i1.552.

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Moringa oleifera L. leaf contain energy, fat, protein, carbohydrates, fiber, vitamin A, and vitamin C. Crackers are a processed food made from a hard dough. The addition of dried Moringa oleifera L. leaf is expected to enhance the nutritional value and turn crackers into a functional food with benefits. This study aims to determine the influence of adding dried Moringa oleifera L. leaf on the antioxidant content and organoleptic properties, including taste, color, aroma, and texture of the crackers. The research was conducted at the Food Processing and Biochemistry Laboratory of Yudharta University, Pasuruan, and then Nutrition Laboratory of Airlangga University Surabaya and then Basic Laboratory of chemistry and biology of Hang tuah University Surabaya. from April to June 2023. The research method employed a Completely Randomized Design with six treatments (0%, 5%, 10%, 15%, 20%, and 30%) repeated three times, resulting in 18 experiments. Physicochemicals data analysis used Minitab software to conduct Analysis of Variance, and Tukey Method was applied for notation determination. Organoleptic testing employed the Friedman test, while the best treatment was determined using the modified De Garmo Effective Index test by Susrini (2003). The results indicate that the addition of dried Moringa oleifera L. leaf significantly affected (p<0.05) the antioxidant activity, taste, color, aroma, and texture of the crackers. The best treatment was P1 (195 grams of dried moringa oleifera: 5 grams of dried Moringa oleifera L. leaf ) with an antioxidant activity of 91.1% Breaking power of 3.67%, moisture content of 5.98%, ash content of 3.3%,and high organoleptic values for taste 3,64%, aroma 4,32%, color 4,32%, and texture 4,08%. The addition of moringa oleifera L. leaf to crackers can enhance the nutritional value of the crackers.

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Ardat, Muh Achyar, Ekajayanti Kining, Zakiah Wulandari, Irma Isnafia Arief, and Nur Afni. "Physicochemicals, Organoleptic Properties, and Nutritional Adequacy Rates of Supplementary Food Cookies with the Addition of Whey Protein Powder, a By-Product of Making Dangke." Jurnal Ilmu Pertanian Indonesia 30, no. 3 (2025): 441–46. https://doi.org/10.18343/jipi.30.3.441.

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The purpose of this research is to develop a supplementary meal for breast milk (CF) using whey protein derived from the byproduct of dangke manufacture, a typical Enrekang dish. The research involved spray drying whey protein powder and making CF cookies with four different whey protein powder addition treatments (0, 10, 20, and 30%). The physicochemical parameters of whey protein powder were studied, and the sensory and nutritional properties of CF cookies were evaluated. A sensory evaluation of the CF cookies found that 20% whey protein powder produced the best results in terms of color, flavor, and texture. Cookies made with 20% whey protein contained 6.80% protein, 22.25% total fat, 65.98% carbohydrate, and a total energy value of 490.73 Kcal/100g. While whey protein cookies contain protein and energy benefits that are comparable with WHO recommendations for CF, some concerns require attention. The total sugar level (24.625%) and salt content (453.67 mg/100 g) were relatively high, necessitating modifications to meet the sugar and sodium limits in CF. This work demonstrates the potential use of whey protein obtained from dangke by-products as a CF ingredient; nevertheless, more refinement is required to optimize its compliance with infant nutritional requirements. Keywords: complementary food, Enrekang, local food, milk, whey protein

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Nufus, Chairun, N. Nurjanah, and Asadatun Abdullah. "Characteristics of Green Seaweeds from Seribu Islands and Sekotong West Nusa Tenggara Antioxidant." Jurnal Pengolahan Hasil Perikanan Indonesia 20, no. 3 (2017): 620. http://dx.doi.org/10.17844/jphpi.v20i3.19819.

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Green seaweeds contain many bioactive compounds which one of them act as antioxidants as well as rich in fibers and essential minerals. This study was aimed to determine physicochemicals properties of Caulerpa lentillifera, Halimeda opuntia and Ulva lactuca and as well as their antioxidant activities. Research consists of proximate analysis, mineral composition, phytochemical compounds, heavy metal content and antioxidant activity of extract green seaweed by CUPRAC, DPPH and FRAP method. The results of the study macronutrient analysis shows the moisture content ranged from 10.83% to 28.41%, ash 24.97% to 70.66%, fat 3.80% to 5.26%, fiber 2.63% to 3.86%, protein 0.18% to 1.43% and carbohydrate 10.69% to 36.49%. Mineral Ca C. lentillifera, H. opuntia and U. lactuca about 17, 95-124,39 g/kg, Fe 0,13-0,34 g/kg, K 2,29-12,28 g/kg, Mg 2.63-22.23 g/kg and Na 21.16-34.18 g/kg. The heavy metals content of C. lentillifera, H. opuntia and U. lactuca ranged in Pb 13.57 mg/kg to 37.76 mg/kg, Cu 5.02 mg/kg to 8.32 mg/kg and Hg 0.170 mg/kg to 0.265 mg/kg. Phytochemicals properties of C. lentillifera, H. opuntia and U. lactuca were alkaloids, flavonoids, phenols hydroquinone, saponins, steroids and triterpenoids. Antioxidant activity of ethanol extract DPPH showed IC50 values ranged from 1.6–4 445 mg /L, CUPRAC 138.21–212.43 μmol trolox/g extract, FRAP 175.93–181.79 μmol trolox/g extract.

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Prodelalova, J., H. Malenovska, and L. Valicek. "Genotyping of porcine teschoviruses isolated from 1960 to 1980 in the former Czechoslovakia and new Porcine teschovirus isolates obtained from piglets with diarrhoea." Veterinární Medicína 54, No. 10 (2009): 461–66. http://dx.doi.org/10.17221/33/2009-vetmed.

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The porcine enteroviruses (family Picornaviridae) were described as causative agents of neurological disorders known as Teschen/Talfan disease, reproductive failure, dermal lesions, enteric disease and pneumonia of swine. Recently, porcine enteroviruses were reclassified on the basis of genome sequencing data. A new Picornavirus genus named Teschovirus (formerly PEV CPE group I.) was established. The aim of the study was retyping and reclassification of the 27 strains of porcine enteroviruses deposited in the Collection of Animal Pathogenic Microorganisms (CAPM). Viral strains were isolated over the period 1960–1980 predominantly from pigs with encephalomyelitis. Twenty-four of 27 isolates were classified as porcine enterovirus serotype 1 (PEV-1) based on physicochemicals properties of their virions and growth characteristics. The viral strains were reclassified using RT-PCR protocol that allowed detection of the genus Teschoviru and the Porcine teschovirus serotype 1 (PTV-1). Two PCR amplifications with cDNA were performed for detection of the genus Teschovirus and PTV-1. Amplification of fragment characteristic for the genus Teschovirus was succesful for all tested viral strains. The fragment characteristic for PTV-1 was detected with the exception of three strains (Kr69TK, 95 and 172). Used RT-PCR method was subsequently applied to the detection of Porcine teschovirus in pig fecal samples. Ten of 22 faecal samples were found to be Porcine teschovirus positive, however none of 22 samples generated amplicon specific for the PTV-1.

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Olatoye, Kazeem, Adebayo Florence, and Laide Lawal. "Suitability of African locust bean (Parkia biglobosa) pulp as a replacement for sucrose in cassava-wheat composite biscuit production." Acta Periodica Technologica, no. 50 (2019): 179–88. http://dx.doi.org/10.2298/apt1950179o.

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High dietary sugar consumption from snack can be reduced by replacing sucrose fraction with healthier sweeteners. Potentials of African locust bean pulp (ALBP) as replacement for sucrose in biscuit production from cassava-wheat flour was evaluated. ALBP was manually extracted from the yellow fruit of African locust bean and oven-dried. Sucrose contents were replaced with ALBP at 0, 25, 50, 75 and 100% in biscuit formulation using standard recipe. Baked biscuit samples were evaluated for chemical (proximate composition, minerals and phytochemical) and physicochemicals (vitamin C, Carotenoids, Total sugar, Brix and pH) properties, using standard methods. Sensory properties were evaluated on a nine-point hedonic scale by thirty panelists. Data were analysed using ANOVA at p<0.05. With increase in ALBP substitution for sucrose, there were increase in moisture (1.63-3.13 ),crude protein (9.78-11.73 %,), Ash (2.00-3.93%,) fibre (0.57- 1.1%) and fat (10.00-14.11%) contents of biscuits but decrease in carbohydrate (75.85%-66.99). No significant influence on metabolizable energy (436.41-432.46kcal/100g). Vitamin C and carotenoid contents also increased and ranges between (0.0-0.19mg/g) and (0.51 -0.93mg/100g) respectively, with concomitant reduction in total sugar (32.70- 29.43(mg/g). Iron, phosphorus and Zinc in (mg/100g) ranged from (2.07 to 3.00), (54.40 to 60.80) and (1.31 to 1.39) respectively. Anti nutrient factors tannin, phytate, cyanide and oxalate were within tolerable limits and ranged between (0.01-0.04mg/g), (0.37-0.46mg/g), (0.37-0.12mg/g) and (0.05-0.07mg/g) respectively. Consumer acceptability study indicated that 25% replacement of ALBP for sucrose is mostly acceptable (7.77 ?0.94). ALBP could serve as alternative sweetner or substitute to sucrose in composite biscuit or similar snacks production.

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Shao, Changheng, Fengjing Shao, Song Huang, Rencheng Sun, and Tao Zhang. "An Evolved Transformer Model for ADME/Tox Prediction." Electronics 13, no. 3 (2024): 624. http://dx.doi.org/10.3390/electronics13030624.

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Drug discovery aims to keep fueling new medicines to cure and palliate many ailments and some untreatable diseases that still afflict humanity. The ADME/Tox (absorption, distribution, metabolism, excretion/toxicity) properties of candidate drug molecules are key factors that determine the safety, uptake, elimination, metabolic behavior and effectiveness of drug research and development. The predictive technique of ADME/Tox drastically reduces the fraction of pharmaceutics-related failure in the early stages of drug development. Driven by the expectation of accelerated timelines, reduced costs and the potential to reveal hidden insights from vast datasets, artificial intelligence techniques such as Graphormer are showing increasing promise and usefulness to perform custom models for molecule modeling tasks. However, Graphormer and other transformer-based models do not consider the molecular fingerprint, as well as the physicochemicals that have been proved effective in traditional computational drug research. Here, we propose an enhanced model based on Graphormer which uses a tree model that fully integrates some known information and achieves better prediction and interpretability. More importantly, the model achieves new state-of-the-art results on ADME/Tox properties prediction benchmarks, surpassing several challenging models. Experimental results demonstrate an average SMAPE (Symmetric Mean Absolute Percentage Error) of 18.9 and a PCC (Pearson Correlation Coefficient) of 0.86 on ADME/Tox prediction test sets. These findings highlight the efficacy of our approach and its potential to enhance drug discovery processes. By leveraging the strengths of Graphormer and incorporating additional molecular descriptors, our model offers improved predictive capabilities, thus contributing to the advancement of ADME/Tox prediction in drug development. The integration of various information sources further enables better interpretability, aiding researchers in understanding the underlying factors influencing the predictions. Overall, our work demonstrates the potential of our enhanced model to expedite drug discovery, reduce costs, and enhance the success rate of our pharmaceutical development efforts.

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Gorpynchenko, Ihor, Yurii Gurzhenko, Volodymyr Spyrydonenko, and Yevhen Lytvynets. "Influence of Radioactive Background on an Idiopathic Form of Infertility Incidence in Men from Different Regions of Ukraine." Health of Man, no. 1 (June 2, 2021): 47–52. http://dx.doi.org/10.30841/2307-5090.1.2021.232477.

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There are 143 men (group I) with idiopathic infertility in the form of asthenozoospermia of the II degree living in the territories of the Kiev region (Poles’ky, Chernobylsky, Ivan’kovsky, Borodyansky, Vyshgorodsky districts) were investigated in the Department of Sexual Pathology and Andrology of the SI «Institute of Urology of the National Academy of Medical Sciences of Ukraine» and exposed to ionizing radiation due to the Chernobyl accident in 1986. All individuals in the I group were born from parents who were in the accident at the Chernobyl nuclear power station in the area of radioactive contamination and permanently resided in areas with a high level of radioactivity. The control group was made up of persons born and living in the Ivano-Frankivsk region with a similar condition (group II, n=57). The mean age of the studied group I was 28,3±2,4 years, and persons of the II group were 30,1±2,8 years. Diagnosis of II was performed ambulatory in accordance with WHO and Ministry of Health of Ukraine standards. The study was to study and compare spermogram parameters in patients from both groups. It has been established that the reproductive problems of men with idiopathic infertility living in radiation-polluted areas of the Kiev region of Ukraine consist in a significant violation of the quality indicators of ejaculate (mobility by the pool A+B is less than 1,6 times, p<0,05) correlating with modifications of physicochemicals (the average time of liquefaction is 1,4 times greater, p<0,05) and biochemical (decrease of levels of fructose by 2,2 times, citrate – by 1,6 times, p<0,01–0,05) data characterizing the effect of ionizing radiation, as one one of the leading factors of male genital function violation. The study found that the level of general indicators of spermogramm is significantly worse in the regions of Ukraine who were exposed to radioactive contamination due to the Chernobyl accident, in contrast to the indicators of persons from conditionally pure regions.

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Vincze, Anna, Gergő Dargó, and György Tibor Balogh. "Cornea-PAMPA as an Orthogonal in Vitro Physicochemical Model of Corneal Permeability." Periodica Polytechnica Chemical Engineering 64, no. 3 (2020): 384–90. http://dx.doi.org/10.3311/ppch.15601.

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The present study was aimed to investigate the relationships between permeability and membrane retention values (logPe and MR) of the in vitro non-cellular permeability assay, corneal-PAMPA in comparison with experimental Caco-2 permeability data and calculated physicochemical properties (MW, clogP, clogD7.4 , TPSA). For the investigation, 50 structurally and physicochemically diverse drugs were selected and measured in PAMPA model optimized for corneal permeability. The results showed corneal-PAMPA model's orthogonality in terms of passive diffusion to the FDA approved Caco-2 as a gastrointestinal absorption model, while the comparison with physicochemical properties revealed trends between logPe , MR and the lipophilicity descriptors and TPSA.

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Kim, Sun Hee, and Irene Krämer. "Physicochemical stability of carfilzomib (Kyprolis®) containing solutions in glass vials, ready-to-administer plastic syringes and infusion bags over a 28-day storage period." Journal of Oncology Pharmacy Practice 25, no. 2 (2017): 339–50. http://dx.doi.org/10.1177/1078155217735881.

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Centralized aseptic preparation of ready-to-administer carfilzomib containing parenteral solutions in plastic syringes and polyolefine (PO) infusion bags needs profound knowledge about the physicochemical stability in order to determine the beyond-use-date of the preparations. Therefore, the purpose of this study was to determine the physicochemical stability of carfilzomib solution marketed as Kyprolis® powder for solution for infusion. Reconstituted solutions and ready-to-administer preparations of Kyprolis® stored under refrigeration (2–8℃) or at room temperature (25℃) were analyzed at predetermined intervals over a maximum storage period of 28 days. Chemical stability of carfilzomib was planned to be determined with a stability-indicating reversed-phase high-performance liquid chromatography assay. Physicochemical stability was planned to be determined by visual inspection of clarity and color as well as pH measurement. The study results show that reconstituted carfilzomib containing parenteral solutions are stable in glass vials as well as diluted solutions in plastic syringes and PO infusion bags over a period of at least 28 days when stored light protected under refrigeration. When stored at room temperature, reconstituted and diluted carfilzomib solutions are physicochemically stable over 14 days and 10 days, respectively. The physicochemical stability of carfilzomib infusion solutions allows cost-saving pharmacy-based centralized preparation of ready-to-administer preparations.

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Serrat, Xavier, Luisa Moysset, Irene Ferreres, and Salvador Nogués. "Dissecting Rice Pearl Character, an Important Added Value in High-Quality Temperate Mediterranean Japonica Cultivars." Agronomy 13, no. 1 (2023): 151. http://dx.doi.org/10.3390/agronomy13010151.

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Rice holds an important sociocultural meaning in Europe, and especially in the gastronomy of its Mediterranean regions, as it is used for world-famous recipes such as Risotto in Italy and Paella in Spain. Paella is prepared with highly appreciated pearled (white-core) rice cultivars such as Bomba or Montsianell, while Risotto is prepared with white-belly Carnaroli cultivar among others. Pearled rice grains have a limited and enclosed translucent zone which is physicochemically different from stress-induced chalky grains present in any rice cultivar at a low rate, and whose opaque area covers at least three quarters of the grain surface. We have studied for the first time the physicochemical aspects of grains from pearled white-belly, white-core and crystalline rice grains of Mediterranean japonica rice cultivars in comparison with their defective stress-induced chalky grains in order to shed some light on their differences. Spanish Bomba and Montsianell white-core (pearled) cultivars have similar physicochemical behaviours but are clearly different from white-belly Carnaroli cultivar. Furthermore, their pearled fractions differ in some traits from stress-induced chalkiness, especially in terms of amyloplastic integrity, relative amylose content and relative storage protein content. This study establishes some physicochemical differences between white-belly, white-core and stress-induced defective chalky grains and will guide future studies to unravel this much-appreciated pearl character in the Mediterranean gastronomy.

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A, N. VERMA, B. GHOLSE S., and P. SANGAL S. "Physicochemical Studies of Complexes of Transition Metal Ions with N-Hydroxy-N,N'-diphenylbenzamidine." Journal of Indian Chemical Society Vol. 72, Oct 1995 (1995): 685–88. https://doi.org/10.5281/zenodo.5909124.

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Laxmmarayan Institute of Technology, Nagpur University, Nagpur-440 010 Manuscript received 13 August 1993, revised 8 March 1994, accepted 22 March 1994 The solid complexes of TiIV, Vv, CrvI, MnII, FeII, FeIII, CoII, NiII, CuII, ZnII, MoVI and UVI with N-hydroxy-N, N'-diphenylbenzarnidlne (HDPB) have been characterised on the basis of elemental analysis, magnetic, thermal, reflectance and infrared spectral data.

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S., N. SINGH, and K. PRASAD R. "Oxidation of Unsymmetrical Dimethyl Hydrazine by Basic Iodine." Journal of Indian Chemical Society Vol. 69, Oct 1992 (1992): 648–50. https://doi.org/10.5281/zenodo.6018902.

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Chemical Laboratory, L. S. College, Muzaffarpur-842 001                                                                                     Manuscript received 1 April 1992, accepted 9 July 1992 The reaction of N,N-dimethyl hydrazine with 12 around pH 10.1 has been studied by simple, potentiometric and thermometric titrations. 1.7 mole I2 are consumed per mole of the base corresponding to two simultaneous reactions, one leading to N2 and the other to tetramethyltetrazene as products. This conclusion is supported by determination of enthalpy.

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M., R. BALASUBRAMANIAN, and VJJAYAKUMAR N. "Physicochemical and Catalytic Studies of some Molybdate." Journal of Indian Chemical Society Vol. 64, Aug 1987 (1987): 509–10. https://doi.org/10.5281/zenodo.6216375.

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Department of Chemistry, Government College of Technology, Coimbatore-641 013 Manuscript received 7 January 1986, revised 18 March 1987, accepted 23 July 1987 Physicochemical and Catalytic Studies of some Molybdate.

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M., SAHA, KUMAR RABINDRA, and BHAGAT S. "Physicochemical Studies on Non-stoichiometric Oxides of Yttrium, Praseocdymium and Gadolinium. Part-II." Journal of Indian Chemical Society Vol. 63, Apr 1986 (1986): 384–86. https://doi.org/10.5281/zenodo.6256515.

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P. G. Department of Chemistry, Bhagalpur University, Bhagalpur-812 007 Manuscript received 18 July 2986, accepted 6 February 1986 Acidity and excess oxygen of the samples obtained from solid state decomposition of nitrates of yttrium, praseodymium and gadolinium have been determined. Apparent activation energy involved in these processes have also been estimated. It has been observed that excess oxygen varies exponentially with acidity. Apparent activation energy in case of thermal decomposition of praseodymium nitrate is significantly higher than those of nitrates of yttrium and gadolinium.

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Lee, Chung Hun. "Physicochemical Stability and Compatibility of Mixtures of Ropivacaine with Dexamethasone or Betamethasone for Epidural Steroid Injections: An In Vitro Study." Pain Physician Journal 27, no. 1 (2024): E89—E98. http://dx.doi.org/10.36076/ppj.2024.27.e89.

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BACKGROUND: Epidural steroid injections are widely used to treat spinal and radiating pain. However, crystal formation has recently been reported in mixtures of ropivacaine and nonparticulate steroids, commonly used in epidural steroid injections. OBJECTIVES: Our study assessed the physicochemical stability of mixtures of different nonparticulate steroids and ropivacaine and aimed to propose a safe regimen for epidural steroid injections. STUDY DESIGN: An in vitro protocol was used to examine the physicochemical stability of epidural steroid injection mixtures most commonly used at our institution. SETTING: In vitro laboratory study. METHODS: Twelve solutions were prepared by mixing 0.75% or 0.2% ropivacaine with dexamethasone or betamethasone at volume ratios of 1:1, 2:1, and 3:1 in propylene syringes at 24°C. The physical properties of the mixtures were observed with the naked eye and under a microscope, and their pH was measured. The concentration of each drug in the mixture was evaluated using high-performance liquid chromatography. RESULTS: None of the ropivacaine and dexamethasone mixtures showed macroscopic or microscopic crystal formation after 2 hours, and there were no significant changes in pH. The concentrations of the 2 drugs remained stable for up to 2 hours. In contrast, at least 10 mu-m crystals were observed microscopically and macroscopically in all mixtures of ropivacaine and betamethasone; the ropivacaine concentration was reduced by > 10% after one hour. LIMITATIONS: Confirming the stability of drugs in vitro does not ensure that their pharmacokinetics and pharmacodynamics remain unaltered in vivo. CONCLUSION: The combination of ropivacaine and betamethasone should be avoided because of their physicochemical instability. Combinations of ropivacaine and dexamethasone should be administered cautiously because they are more physicochemically stable than combinations of ropivacaine and betamethasone. KEY WORDS: Betamethasone, crystal formation, dexamethasone, drug stability, epidural injection, high-performance liquid chromatography, pH, physicochemical stability, spinal pain

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Linxweiler, Helen, Judith Thiesen, and Irene Krämer. "Physicochemical Stability of Generic Thiotepa Concentrate and Ready-to-Administer Infusion Solutions for Conditioning Treatment." Pharmaceutics 15, no. 2 (2023): 309. http://dx.doi.org/10.3390/pharmaceutics15020309.

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The objective of this study was to determine the physicochemical in-use stability of recently approved Thiotepa Riemser concentrate in the original vial and diluted ready-to-administer (RTA) infusion solutions in prefilled glucose 5% and 0.9% NaCl polyolefin bags. Thiotepa Riemser 10 mg/mL concentrates and infusion solutions (1 mg/mL, 2 mg/mL, 3 mg/mL) were prepared in triplicate and stored at 2–8 °C or 25 °C for 14 days. Thiotepa concentrations were determined using a stability-indicating RP-HPLC assay. In parallel, pH and osmolality were measured. Sub-visible particles were counted on day 0 and 14. Thiotepa Riemser concentrate was revealed to be stable for 14 days when stored at 2–8 °C, or for 24 h when stored at 25 °C. Thiotepa concentrations in infusion solutions stored at 2–8 °C remained above 95% of the initial concentrations for at least 14 days, regardless of the type of vehicle solution. When stored at 25 °C, thiotepa infusion solutions in glucose 5% proved to be physicochemically stable for 3 days (1 mg/mL), 5 days (2 mg/mL) or 7 days (3 mg/mL). Thiotepa infusion solutions in 0.9% NaCl remained physicochemically stable for 5 days (1 mg/mL) or 7 days (2 mg/mL, 3 mg/mL). At these points in time, the specification limit of ≤0.6% monochloro-adduct was fulfilled. In parallel, an elevation of the pH values was registered. Thiotepa concentrates and infusion solutions should be stored at 2–8 °C due to temperature-dependent physicochemical stability, and for microbiological reasons. Glucose 5% infusion solution is recommended as a diluent, and stability-improving nominal 2 mg/mL to 3 mg/mL thiotepa concentrations should be obtained.

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Ramadhani, Widya, Indri Indrawan, and Seveline Seveline. "FORMULASI CRACKERS MOCAF DENGAN PENAMBAHAN TEPUNG UDANG REBON SERTA KARAKTERISTIKNYA." Jurnal Bioindustri 4, no. 2 (2022): 93–108. http://dx.doi.org/10.31326/jbio.v4i2.1238.

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A cracker is a snack processed by fermentation method, has a layered, and crunchy texture. Mocaf can be used as an alternative to wheat flour with aim to reduce flour import and to promote food-protein diversification with additon of rebon shrimp (Acetes sp) in the production of crackers. The study aimed to find out and analyze the best organoleptic formulation and physicochemically against mocaf crackers with the addition of rebon shrimp flour. This study used Completely Randomized Design with five treatments and duplo. The data was analyzed using the ANOVA test (α = 0.05) and further tests were using the Duncan Multiple Range Test (DMRT). Organoleptic and physicochemical (yield, texture, moisture, ash, protein, and crude fiber content) analysis based on the best organoleptic results. The study used mocaf and rebon shrimp flour with F1 (95%:5%), F2 (90%:10%), F3 (85%:15%), and F4 (80%:20%) and a control (FK) only flour. The results showed that the best cracker based on organoleptics in taste, aroma, color, texture, and aftertaste is F3. The best physicochemical analysis on F3 had yield value 80.72%, hardness 1770.21 gf, water content 2.08%, ash content 5.74%, protein content 7.64%, and crude fiber content 1.95%.

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Surahman, D. N., R. Ekafitri, T. Rahman, et al. "Physicochemical Properties of Flakes Made from Different Maturity Levels of Banana (Musa Paradisiaca) CV. Ambon." IOP Conference Series: Earth and Environmental Science 1024, no. 1 (2022): 012044. http://dx.doi.org/10.1088/1755-1315/1024/1/012044.

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Abstract Banana is a fruit that possesses high nutritional contents, especially vitamins and minerals. Banana flour is one of the diversification products in bananas processing that could extend shelf life and add economic benefit, and this product can be further processed into banana flakes. Flakes are ready-to-eat food ingredients that are usually used for breakfast. However, information about the maturity level of bananas on the physicochemical properties of flakes has remained unknown. Therefore, this study aimed to determine the effect of the maturity level of ambon banana flour on the physicochemical properties of banana flakes. The research design used in this study was a randomized block design with the research treatment consisting of 2 factors, namely the maturity level of banana flour (A) and baking time (B) with three replications. The best sample was taken from each group and then the scoring test was carried out until the best sample was obtained. Subsequently, the overall best sample was physicochemically characterized. The results showed that the selected treatment was A1B3 (ripe banana flour, 25 minutes). This study revealed that the flake trials' ripe banana flour from ambon cultivar showed the best physiochemical properties.

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Gómez-Anaya, José Antonio, Brenda Brug-Aguilar, Gabriela Vázquez-Hurtado, and Rodolfo Novelo-Gutiérrez. "Diversity and distribution of Odonata (Insecta) larvae in a subtropical lagoon with different land uses in Veracruz, Mexico." Revista Mexicana de Biodiversidad 94 (August 18, 2023): e945158. http://dx.doi.org/10.22201/ib.20078706e.2023.94.5158.

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Impacts caused to freshwater reservoirs by human activities have increased in tropical and subtropical regions in the last decades. We studied the effects of land use on the physicochemical properties of water and their effects on larval Odonata diversity in a subtropical lagoon. During 1 year, physicochemical variables were measured, and Odonata larvae were collected in 8 sites (4 in the urbane zone and 4 in the more conserved rural zone) with different land uses that cover the entire periphery of the lagoon. Physicochemically, no clustering of samples from urban and rural zones or by site was observed, rather clustering reflected temporal patterns. A total of 28 species were found and some of them showed a differential distribution between both zones, and between the 8 sites and collectings. The highest diversity was recorded in the rural zone. The site with domestic waste discharges had the lowest diversity and it showed high concentrations of nitrates and ammonium. We conclude that the effect of land use in this lagoon is still incipient on Odonata diversity. The diversion and treatment of urban waters and proper land management are recommended to ensure the maintenance of Odonata diversity.

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Veerman, E. C. I., P. A. M. van den Keybus, M. Valentijn-Benz, and A. V. Nieuw Amerongen. "Isolation of different high-Mr mucin species from human whole saliva." Biochemical Journal 283, no. 3 (1992): 807–11. http://dx.doi.org/10.1042/bj2830807.

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By using CsCl-density-gradient ultracentrifugation, two high-Mr mucin species were isolated from human whole saliva, having buoyant densities in 0.2 M-guanidinium chloride of approx. 1.56 g/ml (pool IA) and 1.48 g/ml (pool IIA). Analytical density-gradient centrifugation of submandibular, sublingual, labial and palatal saliva, followed by immunochemical analysis with anti-mucin monoclonal antibodies, indicated immunochemical and physicochemical similarities between the high-density mucins of pool IA and mucins from palatal salivary glands. Chemical analysis indicated that the putative palatal mucin was rich in sulphate, but poor in sialic acid. The lower-density mucins of pool IIA equated with the high-Mr mucins of submandibular-sublingual saliva, both immunochemically and physicochemically (buoyant density).

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Witt, P. Ch, F. Grabowski, and H. H. Hahn. "Interactions between biological and physico-chemical mechanisms in biological phosphate elimination." Water Science and Technology 30, no. 6 (1994): 271–79. http://dx.doi.org/10.2166/wst.1994.0278.

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By combining a sequential P-extraction with batch experiments the presented investigations clarify the mechanisms of (enhanced) biological phosphate elimination and especially to answer the following questions: are any physicochemical mechanisms involved in the biological phosphate elimination? are there any interactions between biological and physicochemical unit operations? If so, are these of synergistic or antagonistic nature? The following main results were found: Results of batch experiments: – calcium decreases under anaerobic conditions; this indicates Ca-P-precipitation. – magnesium increases under anaerobic conditions and decreases under aerobic conditions just as phosphate does; there is a high correlation between dissolved magnesium and dissolved phosphorus. Therefore magnesium seems to participate in biological mechanisms (counter-ion of polyphosphates). – concerning the total P elimination efficiency both unit processes seem to have a synergistic effect (biologically mediated P-precipitation). Results of P-fractionations: – there is a certain amount of particulate physicochemically bound phosphorus, which should not be neglected. – although the biologically bound phosphorus dominates (as a rule), this amount depends on the concentration of the readily biodegradable COD significantly. – during the cyclic P-release/P-uptake not only transitions from soluble phase to particulate phase but alsotransfers within the particulate phase take place. – the total P-content of the activated sludge and the sum of the Non Reactive Phosphorus-fractions (without Phase Separation-Non Reactive Phosphorus) seem to be suitable to characterize the capacity of the biological phosphate elimination. Conclusions: Physicochemical mechanisms take part in the enhanced biological phosphate removal and they should be taken into consideration. Therefore they should be included into the deterministic model development.

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Purenovic, Jelena, Marjan Randjelovic, Milan Momcilovic, Milovan Purenovic, Novica Stankovic, and Ljiljana Andjelkovic. "Physicochemically modified peat by thermal and oxidation processes as an active material for purification of wastewaters from certain hazardous pollutants." Chemical Industry 71, no. 4 (2017): 299–306. http://dx.doi.org/10.2298/hemind160522040p.

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The physicochemical modification of peat through thermal and oxidation processes was carried out, in order to obtain new, inexpensive and active material for purification of different types of waters. During the modification, surface chemical compounds of Shilov type were formed. Batch adsorption properties and suitability of physicochemically modified peat (PCMP) for odor removal were tested in aqueous solutions of H2S and colloidal sulphur. Additionally, PCMP was tested in the removal of As(V) which is hazardous ingredient in contaminated waters. Possible mechanisms of pollutants binding include interactions, which lead to formation of adducts and clathrates. All these processes are elucidated in detail. The results showed that the obtained material can be used for the removal of sulphide, colloidal sulphur and As(V) from different types of waters.

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Azevedo, Fernando Alves, Evandro Henrique Schinor, Patrícia Marluci Conceição, Camilla De Andrade Pacheco, José Dagoberto De Negri, and Mariângela Cristofani-Yaly. "Physicochemical quality of early-maturing ‘Navel’ sweet oranges." Semina: Ciências Agrárias 38, no. 1 (2017): 35. http://dx.doi.org/10.5433/1679-0359.2017v38n1p35.

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The cultivation of new types of oranges can be a good alternative for citrus growers because there is a growing domestic market and good export prospects. Due to these expectations, it is essential to search for new cultivars for use in the fresh fruit industry. Therefore, the aim of this work was to physicochemically characterize the fruits of new cultivars of ‘Navel’ oranges, seeking alternatives with good characteristics, such as earliness, lack of seeds, good color and organoleptic characteristics desired by the consumer market. The fruits of five new cultivars of ‘Navel’ orange were evaluated, namely, ‘Bahia Valente’ (CN 28), ‘Golden Nugget Navel’ (CN 41), ‘‘Robertson Navel’’ (CN 39), ‘Washington Navel’ (CV 27) and ‘Washington Navel I’ (CN 34), during two harvest seasons (2012/2013 and 2013/2014). The following physicochemical variables were quantified: mass, peel color, juice yield, acidity, soluble solids and ratio. The cultivars studied were compared to the commercial cultivar ‘Bahia Cabula’ (CV 25). The new cultivars produced fruit with standards that met consumer expectations, with fruit mass suitable for sale of the fresh fruit, good yield juice and early maturation (March), which enables harvesting ‘Bahia Cabula’ in the off-season period. Thus, it is concluded that there are navel orange cultivars with acceptable physicochemical qualities and early maturation.

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Ward, S., F. A. Memon, and D. Butler. "Harvested rainwater quality: the importance of appropriate design." Water Science and Technology 61, no. 7 (2010): 1707–14. http://dx.doi.org/10.2166/wst.2010.102.

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This paper summarises the physicochemical and microbiological quality of water from a rainwater harvesting (RWH) system in a UK-based office building. 7 microbiological and 34 physicochemical parameters were analysed during an 8 month period. Physicochemically, harvested rainwater quality posed little health risk; most parameters showed concentrations below widely used guideline levels for drinking water. However, RWH system components (e.g. fittings and down pipes) appear to be affected soft water corrosion, resulting in high concentrations of some metals (copper, zinc and aluminium). This suggests the material selection of such fittings should be considered keeping in view the hardness of rainwater of an area. Microbiologically, Cryptosporidium, Salmonella and Legionella were not present in the samples analysed. However, faecal coliform counts were high at the beginning of the study, but did decrease over time in weak correlation with increasing pH. Enterococcus faecalis displayed counts consistently above UK rainwater harvesting standards. Inappropriate roof and rainwater good design, as well as material selection appear to be responsible for the reduced microbial quality, as they promoted contributions from avian sources and inhibited cleaning activities. Building and RWH system designs require greater consideration of local factors, which are critical for optimising harvested rainwater quality, to prevent both the development of contaminated sediments and health impacts.

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Klivenko, A. N., G. S. Tatykhanova, G. A. Mun, and S. E. Kudaibergenov. "Synthesis and physicochemical properties of macroporous cryogels." International Journal of Biology and Chemistry 8, no. 1 (2015): 52–60. http://dx.doi.org/10.26577/2218-7979-2015-8-1-52-60.

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Journal articles on the topic 'Physicochemicals'

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