Steel Industry Wastes Treatment in Buffer Ponds

1987 ◽  
Vol 19 (12) ◽  
pp. 363-364
Author(s):  
V. M. Bagnyuk
Keyword(s):  
Functional Groups ◽  
Steel Industry ◽  
Functional Group ◽  
Ecological Factors ◽  
The Self ◽  
Biogenic Elements ◽  
Limiting Factor ◽  
High Turbidity

The bioprocesses of steel industry wastes self-purification in buffer ponds have been studied. The representatives of 6-7 divisions of microalgae and many functional groups of bacteria have been found in the ponds. The important role of a new functional group, the “lytic” microorganisms, in the regulation of microecosystems and in bacterial self-purification has been established. It was found that the activity of self-purification bioprocesses in the buffer ponds studied depends on a variety of ecological factors. The main limiting factor has been shown to be the high turbidity of water, and its deficit of dissolved phosphates and oxygen. To accelerate the self-purification of steel industry wastes in buffer ponds the concentration of organic and mineral forms of the main biogenic elements (C,N,P) should be regulated. Water clarification and aeration were recommended and effectively used.

scholarly journals Natural Products Containing ‘Rare’ Organophosphorus Functional Groups

Molecules ◽  
2019 ◽  
Vol 24 (5) ◽  
pp. 866 ◽  
Author(s):  
Janusz Petkowski ◽  
William Bains ◽  
Sara Seager
Keyword(s):  
Amino Acids ◽  
Natural Products ◽  
Functional Groups ◽  
Functional Group ◽  
Organophosphorus Compounds ◽  
Living Cells ◽  
Unusual Amino Acids ◽  
Biological Source ◽  
Technological Limitations

Phosphorous-containing molecules are essential constituents of all living cells. While the phosphate functional group is very common in small molecule natural products, nucleic acids, and as chemical modification in protein and peptides, phosphorous can form P–N (phosphoramidate), P–S (phosphorothioate), and P–C (e.g., phosphonate and phosphinate) linkages. While rare, these moieties play critical roles in many processes and in all forms of life. In this review we thoroughly categorize P–N, P–S, and P–C natural organophosphorus compounds. Information on biological source, biological activity, and biosynthesis is included, if known. This review also summarizes the role of phosphorylation on unusual amino acids in proteins (N- and S-phosphorylation) and reviews the natural phosphorothioate (P–S) and phosphoramidate (P–N) modifications of DNA and nucleotides with an emphasis on their role in the metabolism of the cell. We challenge the commonly held notion that nonphosphate organophosphorus functional groups are an oddity of biochemistry, with no central role in the metabolism of the cell. We postulate that the extent of utilization of some phosphorus groups by life, especially those containing P–N bonds, is likely severely underestimated and has been largely overlooked, mainly due to the technological limitations in their detection and analysis.

Self-assembly of pendant functional groups grafted PEDOT as paracetamol detection material

2020 ◽  
Vol 22 (6) ◽  
pp. 3592-3603
Author(s):  
Wenli Zhang ◽  
Ruxangul Jamal ◽  
Ruanye Zhang ◽  
Zongna Yu ◽  
Yinqiang Yan ◽  
...  
Keyword(s):  
Functional Groups ◽  
Self Assembly ◽  
Functional Group ◽  
The Self ◽  
Assembly Behavior

This paper reports systematic studies on the self-assembly behavior of pendant functional group grafted PEDOTs as paracetamol detection materials.

Revealing the critical role of template functional group ordering in the template-directed crystallization of pyrazinamide

CrystEngComm ◽  
2019 ◽  
Vol 21 (42) ◽  
pp. 6382-6389 ◽  
Author(s):  
Keke Zhang ◽  
Shijie Xu ◽  
Junbo Gong ◽  
Weiwei Tang
Keyword(s):  
Functional Groups ◽  
Functional Group ◽  
Critical Role ◽  
Directed Crystallization ◽  
Specific Orientation

The nucleation of γ form pyrazinamide can be directed by the ordering and specific orientation of the template functional groups.

scholarly journals Complexations of Divalent Metallic Ions with Fulvic Acids

2018 ◽  
Vol 43 (1) ◽  
pp. 54
Author(s):  
Denise De Oliveira Vaz ◽  
Andreia Neves Fernandes ◽  
Bruno Szpoganicz
Keyword(s):  
Functional Groups ◽  
Functional Group ◽  
Fulvic Acids ◽  
Aquatic Environments ◽  
Metallic Ions ◽  
Divalent Ions ◽  
Proton Dissociation ◽  
Bivalent Ions ◽  
Suwannee River Fulvic Acid

In this work, the interactions of the functional groups of fulvic acids with copper, cadmium and zinc bivalent ions was investigated by potentiometry. The BEST7 software was employed to investigate the interactions of the functional groups. The software SPE and SPEPLOT were used to generate and to plot the species diagrams. It was used the Suwannee River fulvic acid (SRFA) of the IHSS (International Humic Substances Society) to illustrate the process. The values of the proton dissociation and complexation constants with the divalent ions for each functional group were calculated and their values were very close tothose previously published. The functional group present in the highest quantity in the complexes was cathecol, and it complexed with all the divalent ions, although to a greater extent with Cu(II). According to the results obtained by potentiometry, the reactivity series for the divalent ions and the SRFA is: Cu(II) >> Cd(II) > Zn(II). Thus, the method employed could be useful to estimate the role of fulvic acids in the transport of metals in the aquatic environments.

The role of the self in creative expression

2014 ◽  
Author(s):  
Kristin Donnelly ◽  
Radmila Prislin ◽  
Ryan Nicholls
Keyword(s):  
Creative Expression ◽  
The Self

The role of the self in organizational justice

2007 ◽  
Author(s):  
D. Ramona Bobocel ◽  
Russell E. Johnson ◽  
Joel Brockner
Keyword(s):  
Organizational Justice ◽  
The Self

The role of egocentrism in estimating social evaluations of the self

2004 ◽  
Author(s):  
John Chambers ◽  
Nick Epley ◽  
Paul Windschitl
Keyword(s):  
The Self

From Container to Claustrum: Projective Identification in Couples

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
Tamara Feldman
Keyword(s):  
Psychological Health ◽  
Projective Identification ◽  
The Self ◽  
The Other ◽  
Intimate Partners ◽  
And Control ◽  
The Relationship ◽  
As If

This paper is a contribution to the growing literature on the role of projective identification in understanding couples' dynamics. Projective identification as a defence is well suited to couples, as intimate partners provide an ideal location to deposit unwanted parts of the self. This paper illustrates how projective identification functions differently depending on the psychological health of the couple. It elucidates how healthier couples use projective identification more as a form of communication, whereas disturbed couples are inclined to employ it to invade and control the other, as captured by Meltzer's concept of "intrusive identification". These different uses of projective identification affect couples' capacities to provide what Bion called "containment". In disturbed couples, partners serve as what Meltzer termed "claustrums" whereby projections are not contained, but imprisoned or entombed in the other. Applying the concept of claustrum helps illuminate common feelings these couples express, such as feeling suffocated, stifled, trapped, held hostage, or feeling as if the relationship is killing them. Finally, this paper presents treatment challenges in working with more disturbed couples.

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