Physicochemical factors affecting the diversity and abundance of Afrotropical Culicoides species in larval habitats in Senegal

Acta Tropica ◽  
2021 ◽  
pp. 105932
Author(s):  
M.T. Bakhoum ◽  
A.G. Fall ◽  
M.T. Seck ◽  
M. Fall ◽  
M. Ciss ◽  
...  
Keyword(s):  
Culicoides Species ◽  
Larval Habitats ◽  
Factors Affecting ◽  
Physicochemical Factors

Factors Affecting Bioconcentration of Trace Organic Contamination in Waters

1989 ◽  
Vol 21 (2) ◽  
pp. 147-150 ◽  
Author(s):  
D. W. Hawker ◽  
D. W. Connell
Keyword(s):  
Molecular Weight ◽  
Bioconcentration Factor ◽  
Aqueous Solubility ◽  
Organic Chemicals ◽  
Organic Contamination ◽  
Hydrophobic Organic Chemicals ◽  
Factors Affecting ◽  
Water Partition Coefficient ◽  
Physicochemical Factors ◽  
Trace Organic

The influence of some important biological and physicochemical factors on the bioconcentration of hydrophobic organic chemicals is outlined. For non-ionizable, persistent compounds the bioconcentration factor can be related to a compound's octanol/water partition coefficient, aqueous solubility and molecular weight, while the lipid content of an organism also affects the bioconcentration potential of these compounds. The effect of ionization and biodegradation of organic chemicals on bioconcentration is also discussed.

scholarly journals Studies of factors affecting stability and efficiency of anion exchanger

2020 ◽  
Vol 177 ◽  
pp. 03020
Author(s):  
Nigora Mukhtarova ◽  
Bakhodir Aliev ◽  
Sadritdin Turabdzhanov ◽  
Latofat Rakhimova
Keyword(s):  
Ion Exchange ◽  
Anion Exchanger ◽  
Analytical Data ◽  
Polycondensation Reaction ◽  
Water And Wastewater Treatment ◽  
Factors Affecting ◽  
Exchange Processes ◽  
Physicochemical Factors ◽  
Swelling Capacity ◽  
Water And Wastewater

Various industries such as mining and the chemical industry are one of the most used ion exchange processes for water and wastewater treatment. The first section of this work presents the mechanism of the polycondensation reaction to obtain the polymer matrix of anion exchanger. Elemental analytical data conformed that anion exchanger holds 34,99% of nitrogen atoms and 44,47% oxygen atoms in the structure. In addition to the synthesis of the anion exchanger, physicochemical factors have a significant effect. The temperature of reactions for a certain time using a Lewis catalyst, the choice of the optimal solvent for improving swelling capacity of the starting monomers, due to their advantages as effective materials at a low price, are described in the second section. The information in the last section of the paper is devoted to the sorption properties and the ion-exchange processes in where the obtained anion exchanger was studied and used.

scholarly journals Factors affecting bioleaching in the processing of non-metallics

2022 ◽  
Vol 7 (1) ◽  
pp. 11-16
Author(s):  
Iveta Štyriaková
Keyword(s):  
Magnetic Separation ◽  
Iron Removal ◽  
Raw Material ◽  
Bacterial Leaching ◽  
Iron Dissolution ◽  
Electromagnetic Separation ◽  
Factors Affecting ◽  
Fe Content ◽  
Quartz Sands ◽  
Physicochemical Factors

Biotechnological treatment of non-metallics is based on bacterial leaching of raw material and dissolution of Fe. Bacterial iron dissolution ability is dependent on various physicochemical factors as temperature, acidity of solutions, redox potential, rapidity of water circulation and presence of organic sources. The Fe content in the quartz sands and feldspar samples by the biological leaching decreased as much as 60% and by subsequent using of electromagnetic separation of feldspars, the decrease of Fe content in 74% was achieved. However, the application of magnetic separation of quartz sands after bioleaching resulted in total iron removal of 93% and in such combined way prepared product contained 0.024 % of Fe2O3. Achieved results on iron removal point to the fact that combination of leaching and magnetic separation enables to obtain product usable in glass and ceramic industry.

scholarly journals A Comprehensive Insight on Pharmacokinetics

2016 ◽  
Vol I (I) ◽  
pp. 27-37
Author(s):  
Urooj Naseem ◽  
Fatima Iqbal ◽  
Gul Shahnaz
Keyword(s):  
Drug Distribution ◽  
The Body ◽  
Acid Dissociation ◽  
Physical Factors ◽  
Acid Dissociation Constant ◽  
Factors Affecting ◽  
Physicochemical Factors ◽  
Basic Parameters ◽  
Insight Into ◽  
Phase I And Ii

Pharmacokinetics can be defined as what the body does to a drug. The basic parameters of pharmacokinetics are discussed here including absorption, distribution, metabolism, and excretion. Characteristics and pathways taken by these drugs are determined by these parameters. The mechanism followed by these parameters are also discussed. Furthermore, the factors affecting these parameters including physicochemical factors, physical factors and pharmaceutical factors are also explored. Different routes of drug absorption and main barriers to drug distribution are also explained. The pharmacokinetic values namely acid dissociation constant, bioavailability and solubility are briefly explained. There is a detailed insight into the pathways of metabolism (Phase I and II reactions) and excretion.

Sign in / Sign up

Export Citation Format

Share Document