scholarly journals STUDIES OF THE ORGANIC ORIGIN CHEMICAL COMPOUNDS OF BROWN COALS AND CARBONIZED PLANT RESIDUES FROM NORTHERN TIMAN

2020 ◽  
pp. 55-64
Author(s):  
Lyudmila Sergeyevna Kocheva ◽  
Anatoliy Petrovich Karmanov ◽  
Vladimir Pavlovich Lutoev ◽  
Sergey Aleksandrovich Pokryshkin
Keyword(s):  
Komi Republic ◽  
Plant Residues ◽  
Quantitative Chemical Analysis ◽  
A Value ◽  
Maximum Value ◽  
Brown Coals ◽  
Middle Timan ◽  
Chemical Studies ◽  
Physical And Chemical ◽  
Paramagnetic Properties

The results of the physical and chemical studies of the organic matter of Devonian brown coals and rocks with carbonized plant residues from Northern Timan (Russian Arctic) are presented. We used a complex of physical and chemical methods, including IR spectroscopy, EPR spectroscopy, quantitative chemical analysis, pyrolytic gas chromato-mass spectrometry. For comparative studies we used Devonian (Middle Timan) and Jurassic (Griva, Komi Republic, Russia) carbonized plant residues and lignins, isolated from modern wood and non-wood plants. Organic structures of aromatic nature, which are products of the metamorphic transformation of lignins of coal-forming plants, were found in the investigated samples. It was shown that lignin’s relics show pronounced paramagnetic properties, mainly due to the presence of phenoxyl radicals. The concentration of paramagnetic centers reaches a value that is close to the maximum value nорг for carbonaceous substances. Based on quantitative analysis of phenolic products of pyrolysis the composition of lignin relics was calculated, taking into account the ratio of the main structural H, G and S units. Experimental data allowed to put forward the hypothesis that in the composition of Devonian coal-forming plants, as one of the first representatives of forest communities on the planet, included compositionally homogeneous protolignins of H-type, built mainly from p-coumaric structural units.

scholarly journals EFFECT OF AMBIENT TEMPERATURE ON THE HUMIFICATION OF PLANT LITTER

2017 ◽  
Vol 21 (10) ◽  
pp. 199-205
Author(s):  
Y.V. Simonov
Keyword(s):  
Small Groups ◽  
Plant Litter ◽  
Effect Of Temperature ◽  
Plant Residues ◽  
Humus Substances ◽  
Chemical Studies ◽  
Humus Acids ◽  
Humus Accumulation ◽  
Degree Of Maturity ◽  
Physical And Chemical

Techniques of laboratory microecosystems, small groups of arthropods and physical and chemical studies are shown. On the basis of instrumental studies the effect of temperature on the ratio of the processes of mineralization and humification of plant residues with the participation of small arthropods is computed. Analysis of the results of measurements of indicators of the process ofhumification clearly reveals that the temperature of the plant material affects the intensity of humus accumulation and on indicators of the degree of maturity of humus acids. Activity of microarthropods reduces the dependence of accumulation of humus substances on the temperature.

scholarly journals Physical and Chemical Studies on Ceruloplasmin

1965 ◽  
Vol 240 (5) ◽  
pp. 1974-1978 ◽  
Author(s):  
Philip Aisen ◽  
Anatol G. Morell
Keyword(s):  
Chemical Studies ◽  
Physical And Chemical

scholarly journals Physical and Chemical Studies of a Limited Reaction of Iodine with Proteins

1959 ◽  
Vol 234 (6) ◽  
pp. 1447-1451
Author(s):  
Leon W. Cunningham ◽  
B. Joanne Nuenke
Keyword(s):  
Chemical Studies ◽  
Physical And Chemical

scholarly journals Physical and Chemical Studies on Ceruloplasmin

1969 ◽  
Vol 244 (13) ◽  
pp. 3494-3496 ◽  
Author(s):  
A G Morell ◽  
C J A Van Den Hamer ◽  
I H Scheinberg
Keyword(s):  
Chemical Studies ◽  
Physical And Chemical

scholarly journals Analisis Kesesuaian Perairan untuk Keramba Jaring Apung di Kecamatan Sirah Pulau Padang Kabupaten Ogan Komering Ilir Provinsi Sumatera Selatan

2019 ◽  
Vol 8 (1) ◽  
pp. 20-30
Author(s):  
Rangga Bayu Kusuma Haris ◽  
Indah Anggraini Yusanti
Keyword(s):  
Water Quality ◽  
Current Velocity ◽  
Quality Parameters ◽  
Chemical Parameters ◽  
Chemical Laboratory ◽  
M Current ◽  
Bottom Substrate ◽  
A Value ◽  
Physical And Chemical Parameters ◽  
Physical And Chemical

Haris et al, 2019. The Analysis of Water Suitability for Floating Net Sprouts in Sirah Pulau Padang, Ogan Komering Ilir District, South Sumatra Province. JLSO 8(1):20-30.The purpose of this study is to analyze the level of water suitability of the floating net sprouts in sirah pulau padang, ogan komering river, Serdang Menang Village, OKI South Sumatra Regency based on water physical and chemical parameters. This study was conducted on July - August 2018 at the Komering River, Ulak Jermun village, Terusan Menang Village, and Mangun Jaya Village, OKI District, South Sumatra. The data of sampling was divided into 3 stations, they were; station 1 was Ulak Jermun Village (3 ° 18'45.48 "LS and 104 ° 53'5.32" BT), station 2 was Terusan Menang Village (3 ° 17'14.13 "LS and 104 ° 52'46.78 "BT), and station 3 was Mangun Jaya village (3 ° 18'14.92" LS and 104 ° 52'59.48 "BT). The data of Samples were tested at the chemical laboratory in Palembang Public Water Fisheries and Extension Research Institute directly. The results of the study was for Station 1, Station 2, and Station 3 with a value was  48% with a good feasibility information. The results of measurements of water quality parameters, the pH was about 6.6 - 6.7, temperature was about from 24., 53 - 26.93oC, DO 3.93 - 4.36 mg / l, ammonia was about 0.78 - 0.16 mg / l, water brightness was about from 34.67 - 43.33 cm, CO2 4.53 - 5.03 mg / l, depth 2.36 - 2.47 m, current velocity was about 0.38 - 0.44 m / s, nitrate was about 0.37 - 0.439 mg / l, phosphate was about 0.009 - 0.225 mg / l and the bottom substrate of water was mud.

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