Comparison of some physico-chemical parameters of kiwiberry (Actinidia arguta) cultivars from a cold climate

AbstractThe Actinidia genus includes a number of commercial fruit species with a wide range of countries of origin. Some species such as A. arguta or A. kolomikta are characterized by a high level of resistance to frost. The aim of this study was to compare the fruit of selected cultivars of kiwiberry. In the kiwiberry fruit, sucrose was the predominant type of sugar. Citric acid was dominant in all samples; it was most represented in the pulp of kiwiberry seedlings and in the skin of kiwiberry ‘Issai’. Kiwiberry fruits feature a higher ascorbic acid content in the skin in comparison with the commercial A. chinensis cultivars. Antioxidant activity of kiwiberry fruit skin was up to 18 times higher than that of the pulp. In view of the kiwiberry fruit having no hair, it is possible to eat the whole fruit, including the skin containing substances beneficial to health.

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Spatial and Monthly Changes in Interstitial Water Physico-Chemistry of Bodo Creek

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2021/v15i630345 ◽

2021 ◽

pp. 1-8

Author(s):

D. K. Nkeeh ◽

A. I. Hart ◽

E. S. Erondu ◽

N. Zabbey

Keyword(s):

Oxygen Demand ◽

Aquatic Organisms ◽

Ion Concentration ◽

Chemical Parameters ◽

Monthly Basis ◽

Hydrogen Ion Concentration ◽

Quality Of Water ◽

Physico Chemical ◽

Significant Difference ◽

High Level

Water plays a key role in the survival, growth and reproduction of aquatic organisms. Therefore maintaining good quality of water physico-chemical parameters would ensure optimum productivity of aquatic fauna. The study evaluated water physical and chemical parameters (temperature, hydrogen ion concentration (pH), conductivity, dissolved oxygen (DO) and biochemical oxygen demand (BOD) of Bodo Creek. Sample was collected for 5 months (July 2020 – November 2020) at locations previously studied (before-spill baseline studies, 3 years, 5 years, and 7 years after-spill); by using the sampling methods used in previous studies. Spatially, there was no statistically significant difference in temperature (p > 0.05 = 0.997), pH (p > 0.05 = 0.496), DO (p > 0.05= 0.34) and BOD (p > 0.05 = 0.644). However, the difference in conductivity between the stations was statistically significant (p < 0.05 = 0.006). On monthly basis, there was a significant difference in temperature (p < 0.05 = 0.000) and pH (p < 0.05 = 0.005). In contrast, there was no statistically significant difference in conductivity (p > 0.05 = 0.633), DO (p > 0.05 = 0.559) and BOD (p > 0.05 = 0.75). Most of the physico-chemical parameters were not within the WHO recommended levels for the survival of aquatic lives, indicating a high level of environmental pollution in Bodo Creek. This study provides dataset for future evaluation of the water physico-chemistry of Bodo Creek.

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High Level Transient Expression in Mammalian Cells: Identification and Optimization of Physico-Chemical Parameters of the Calcium Phosphate Transfection Method

Animal Cell Technology: Developments Towards the 21st Century ◽

10.1007/978-94-011-0437-1_8 ◽

1995 ◽

pp. 49-55 ◽

Cited By ~ 2

Author(s):

Martin Jordan ◽

Florian M. Wurm

Keyword(s):

Calcium Phosphate ◽

Transient Expression ◽

Mammalian Cells ◽

Chemical Parameters ◽

Physico Chemical ◽

Transfection Method ◽

High Level ◽

Expression In Mammalian Cells ◽

Calcium Phosphate Transfection

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Thermal evolution of Andean iron oxide–apatite (IOA) deposits as revealed by magnetite thermometry

Scientific Reports ◽

10.1038/s41598-021-97883-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Gisella Palma ◽

Martin Reich ◽

Fernando Barra ◽

J. Tomás Ovalle ◽

Irene del Real ◽

...

Keyword(s):

Iron Oxide ◽

Thermal Evolution ◽

Chemical Parameters ◽

Physico Chemical ◽

Wide Range ◽

Geological Models ◽

Chilean Altiplano ◽

Geochemical Studies ◽

Modern Technologies ◽

Magnetite Formation

AbstractMagnetite is the main constituent of iron oxide–apatite (IOA) deposits, which are a globally important source of Fe and other elements such as P and REE, critical for modern technologies. Geochemical studies of magnetite from IOA deposits have provided key insights into the ore-forming processes and source of mineralizing fluids. However, to date, only qualitative estimations have been obtained for one of the key controlling physico-chemical parameters, i.e., the temperature of magnetite formation. Here we reconstruct the thermal evolution of Andean IOA deposits by using magnetite thermometry. Our study comprised a > 3000 point geochemical dataset of magnetite from several IOA deposits within the Early Cretaceous Chilean Iron Belt, as well as from the Pliocene El Laco IOA deposit in the Chilean Altiplano. Thermometry data reveal that the deposits formed under a wide range of temperatures, from purely magmatic (~ 1000 to 800 °C), to late magmatic or magmatic-hydrothermal (~ 800 to 600 °C), to purely hydrothermal (< 600 °C) conditions. Magnetite cooling trends are consistent with genetic models invoking a combined igneous and magmatic-hydrothermal origin that involve Fe-rich fluids sourced from intermediate silicate magmas. The data demonstrate the potential of magnetite thermometry to better constrain the thermal evolution of IOA systems worldwide, and help refine the geological models used to find new resources.

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Properties and applications of palygorskite-sepiolite clays

Clay Minerals ◽

10.1180/claymin.1996.031.4.01 ◽

1996 ◽

Vol 31 (4) ◽

pp. 443-453 ◽

Cited By ~ 410

Author(s):

E. Galan

Keyword(s):

Clay Minerals ◽

Crystal Morphology ◽

Industrial Applications ◽

Chemical Parameters ◽

Principal Characteristics ◽

Surface Active Agents ◽

Physico Chemical ◽

Wide Range ◽

Surface Active ◽

Fabric Surface

AbstractThe palygorskite-sepiolite group of clay minerals has a wide range of industrial applications derived mainly from its sorptive, rheological and catalytic properties which are based on the fabric, surface area, porosity, crystal morphology, structure and composition of these minerals. For assessing potential industrial uses, the mineralogical and chemical composition of the clay and its basic physical and physico-chemical parameters must be determined. Then some particular properties of commercial interest can be modified and improved by appropriate thermal, mechanical and acid treatments, surface active agents, organo-mineral derivatives formation, etc. In this paper, a revision of the principal characteristics of commercial palygorskite-sepiolite clays is presented, and potential uses are suggested according to these data. New products and applications are being investigated and those concerning environmental protection in particular, are noted. Finally, possible health effects of these elongate clay minerals are discussed.

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Physico-chemical and phytochemical evaluation of Aloe acutissima leaves

International Journal of Bioassays ◽

10.21746/ijbio.2016.06.0010 ◽

2016 ◽

Vol 5 (06) ◽

pp. 4633

Author(s):

Abdul Nasar S.* ◽

Narasegowda P. N.

Keyword(s):

Fatty Acids ◽

Ascorbic Acid ◽

Free Fatty Acids ◽

Ascorbic Acid Content ◽

Phytochemical Analysis ◽

Chemical Parameters ◽

Standard Methods ◽

Physico Chemical ◽

The Family ◽

Leaf Powder

Aloe acutissima is a fast growing shrub belonging to the family Xanthorrhoeaceae. This plant is a point of concern as it has profound importance in the field of pharmacology. The secondary metabolites obtained from this plant viz., alkaloids, flavonoids, steroids, quinines, glycosides, tannins, saponins, terpenoids, phenols, proteins, oils and free fatty acids serves as a medicinal tool to mankind. The study comprises of physico-chemical and phytochemical evaluation of leaves of Aloe acutissima by using standard methods. Physico-chemical parameters such as percentage of loss on drying (LOD), ash values, extractive values were determined. Phytochemical evaluation was carried out to detect the presence of alkaloids, carbohydrates, tannins, saponins, flavonoids, quinines, glycosides, terpenoids, phenols, couramins, acids, proteins, oils and free fatty acids in different extracts of Aloe acutissima leaf powder. Estimation of Phenols, Tannin, flavonoids, Alkaloids, steroids and ascorbic acid content of Aloe acutissima leaves were also carried out. Thus the present study revealing the physico-chemical data and phytochemical analysis of leaves of Aloe acutissima is useful for further studies of pharmacological parameters which is helpful for the future at large.

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Thermal Evolution of Andean Iron Oxide-Apatite (IOA) Deposits as Revealed by Magnetite Thermometry

10.21203/rs.3.rs-675218/v1 ◽

2021 ◽

Author(s):

Gisella Palma ◽

Martin Reich ◽

Fernando Barra ◽

J. Tomás Ovalle ◽

Irene Real ◽

...

Keyword(s):

Iron Oxide ◽

Thermal Evolution ◽

Chemical Parameters ◽

Physico Chemical ◽

Wide Range ◽

Geological Models ◽

Chilean Altiplano ◽

Geochemical Studies ◽

Modern Technologies ◽

Magnetite Formation

Abstract Magnetite is the main constituent of iron oxide–apatite (IOA) deposits, which are a globally important source of Fe and other elements such as P and REE, critical for modern technologies. Geochemical studies of magnetite from IOA deposits have provided key insights into the ore-forming processes and source of mineralizing fluids. However, to date, only qualitative estimations have been obtained for one of the key controlling physico-chemical parameters, i.e., the temperature of magnetite formation. Here we reconstruct the thermal evolution of Andean IOA deposits by using magnetite thermometry. Our study comprised a >3000 point geochemical dataset of magnetite from several IOA deposits within the Early Cretaceous Chilean Iron Belt, as well as from the Pliocene El Laco IOA deposit in the Chilean Altiplano. Thermometry data reveal that the deposits formed under a wide range of temperatures, from purely magmatic (~1000–800 °C), to late magmatic or magmatic-hydrothermal (~800–600 °C), to purely hydrothermal (<600 °C) conditions. Magnetite cooling trends are consistent with genetic models invoking a combined igneous and magmatic-hydrothermal origin that involve Fe-rich fluids sourced from intermediate silicate magmas. The data demonstrate the potential of magnetite thermometry to better constrain the thermal evolution of IOA systems worldwide, and help refine the geological models used to find new resources.

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Pangas pond culture in Bangladesh.

10.1079/ac.70673.20203483391 ◽

2020 ◽

Author(s):

Khandaker Huq ◽

Shafiq-ur-Rahman

Keyword(s):

Survival Rate ◽

Production Rate ◽

Cage Culture ◽

Chemical Parameters ◽

Pond Culture ◽

Physico Chemical ◽

Wide Range ◽

Pangasius Sutchi ◽

Research Institute

Abstract Culture of indigenous pangas (Pangasius pangasius) started in 1945 in Khulna region and was dependent on natural fish fry. Exotic Thai pangas (Pangasius hypophthalmus, previously Pangasius sutchi) was introduced to Bangladesh in 1990 from Thailand by the Department of Fisheries. Induced breeding of Thai pangas was introduced by the Bangladesh Fisheries Research Institute in 1993. Pangas is omnivorous. It can tolerate a wide range of physico-chemical parameters. The survival rate of Thai pangas is 85-95% with a production rate of 20-30 t ha-1 yr-1. Both mono and polyculture are practiced in Bangladesh. Recently, cage culture of pangas has been introduced.

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