scholarly journals Contributions at Biodiversity, Physical and Chemical Properties Knowledge from Tinovul Mohos, in Ciucului Mountain

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Ioan PACURAR ◽  
Teodor RUSU ◽  
Doina CLAPA ◽  
Anca SOTROPA ◽  
Mircea DUNCA
Keyword(s):  
Chemical Properties ◽  
Specific Weight ◽  
Peat Moss ◽  
Physical And Chemical Properties ◽  
Organic Substances ◽  
Mineral Substance ◽  
Physical And Chemical ◽  
Acid Character ◽  
And Chemical Properties

Peat lands or histosoils occupy more than 6000 ha in Romania. Tinovul Mohos having more than 80 ha and a peat store more than 3 millions ton, is one of the most representative from Europe for his fauna and flora biodiversity. It is a peat land beggarly in nutritive and mineral substance, having a powerful acid character (pH 3,20-4,07).Tinovul Mohos is formed on the basis of peat moss Sphagnum, having a thickness of 10 m, more than 99% organic substances, specific weight between 0,69 and 0,84, and a percent of carbon 49-51%. Tinovul Mohos shelter many survival species like Lycopodium inundatum, Drosera obovata, Drosera intermedia, Andromeda polifolia, Meesea longiseta, Sparganium minimum, Calamagostris neglecta, Eriophorum gracile,Mitopus morio.

scholarly journals Physical and Chemical Properties of Substrates Containing Earthworm Castings and Effects on Marigold Growth

HortScience ◽  
2006 ◽  
Vol 41 (6) ◽  
pp. 1474-1476 ◽  
Author(s):  
Pablo R. Hidalgo ◽  
Frank B. Matta ◽  
Richard L. Harkess
Keyword(s):  
Pore Space ◽  
Chemical Properties ◽  
Growth Index ◽  
Dry Weight ◽  
Nutrient Content ◽  
Peat Moss ◽  
Physical And Chemical Properties ◽  
Flower Number ◽  
Physical And Chemical ◽  
And Chemical Properties

The effects of various substrates with or without earthworm [Eisenia fetida (Savigny, 1826] castings on growth of marigolds were evaluated. In addition, the physical and chemical properties of such substrates were determined. Castings had a greater nutrient content than the remaining substrates. The 4 pine bark: 1 sand treatment (v/v) (PBS) had higher P, K, and Zn than 7 peat moss: 3 perlite (v/v) (PP). PP had the lowest nutrient content of all substrates. Castings (C) had the highest pH followed by 1 PBS: 1 C (v/v), 2 PBS: 1C (v/v) and 3 PBS: 1C (v/v). Sunshine Mix 1 and PP had the lowest pH. EC (ER) was increased by castings, which had high ER. Castings and PP had the greatest percentage pore space. Water-holding capacity was greatest for 2 PBS: 1C (v/v) compared with Sunshine Mix 1 followed by castings. Earthworm castings increased plant growth index, stem diameter, root growth, dry weight, and flower number of marigolds compared with PP, Sunshine Mix 1, and PBS. All mixtures of castings (C) with PP, PBS, except 3 PBS: 1C (v/v), increase the growth index of plants. 1 PP: 1 C (v/v), increased flower number compared with all substrates without castings. Castings alone increased number of open flowers, but did not differ from 1 PP: 1 C or 3 PP:1 C.

scholarly journals ANALYSİS OF THE İMPACT OF PHYSİCAL AND CHEMİCAL FEATURES OF THE NATURAL GAS TO THE PARAMETERS OF THE GAS TRANSPORT SYSTEM

2021 ◽  
Vol 11 (07) ◽  
pp. 22-28
Author(s):  
H.R.Gurbanov H.R.Gurbanov ◽  
A.N. Baghirov A.N. Baghirov
Keyword(s):  
Natural Gas ◽  
Chemical Properties ◽  
Specific Weight ◽  
Transportation System ◽  
Physical And Chemical Properties ◽  
Compressor Station ◽  
Associated Gas ◽  
Physical And Chemical ◽  
The Impact ◽  
And Chemical Properties

Definition of the technological regimes of the natural gas transportation system is co-related with the physical and chemical features of the gas. The results of the chemical analyses of gas in the gas turbine compressor station are laid out in the article: various levels of changes of the composition of gas at various points are described. Technological losses of gas are determined, as the result of change in its specific weight in the process of compression, cooling down and separation at the compressor station. Gas losses in the sub water main gas pipelines are analyzed. Changes of the content of the gas carbonate in the composition of the gas are analyzed, its degradation alongside the pipeline and existence of the CO2 in the composition of the low-pressure oil associated gas is described in comparison with the high-pressure natural gas, which is 3,8 times more. The problems, caused by the presence of the gas carbonate in the composition of the natural gas, are highlighted. The physical properties of natural gas are characterized by its specific gravity, temperature, pressure, volume and other parameters, and chemical properties by its composition, stability of gas-forming components. It should be noted that the physical and chemical properties of gas vary within certain limits, depending on the time, both on the reservoir and on the same reservoir. Therefore, in order to regulate the parameters of the gas transportation system, it is necessary to periodically examine and take into account the physical and chemical properties of the gas. Keywords: Natural gas, carbon dioxide,compressor station, gas pipeline, gas well.

Sustainable Urban Horticulture of Sweet Pepper via Vermicomposting in Summer Season

2014 ◽  
Vol 3 (1) ◽  
pp. 110-122
Author(s):  
Abul Soud ◽  
M. A., M. S. A. Emam ◽  
M. A. A. Abdrabbo ◽  
F. A. Hashem ◽  
Shaimaa H. Abd-Elrahman
Keyword(s):  
Vegetative Growth ◽  
Chemical Properties ◽  
Sweet Pepper ◽  
Summer Season ◽  
Growth And Yield ◽  
Peat Moss ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
Urban Horticulture ◽  
And Chemical Properties

The need for extend the urban horticulture to cover the food security demands, to mitigate CO2 emissions and avoid the extreme heat waves drive this study to investigate the ability of using soilless culture systems, vermicomposting technology and net cover in producing vegetables in urban area in summer season. The aim of this study was to determine the effect of different vermicompost rates mixed with the standard substrate peat moss: perlite (perlite: peat moss: vermicompost (45:45:10) (Mix.10%), perlite: peat moss: vermicompost (40:40:20) (Mix.20%), perlite: peat moss: vermicompost (35:35:30) (Mix.30%) and perlite: peat moss (50:50 V/V) (Control) under three microclimate conditions (plants covered with black net, white net and without cover) on vegetative growth and yield of sweet pepper (Capsicum annuum L. cv. Reda) grown in pots culture during summer seasons of 2012 and 2013 at the Central Laboratory for Agricultural Climate, Agricultural Research Center, Dokki, Giza Governorate. Physical and chemical properties of substrates, vegetative growth and yield characteristics, agrometerological data and mineral contents were determined. The obtained data indicated that vermicomposting could contribute in mitigate CO2 emission, save the essential nutrients and energy via recycling the urban organic wastes to vermicompost. The physical and chemical properties were affected by vermicompost. The best vegetative growth and yield of sweet pepper were given by (Mix.20%) vermicompost mixture followed by (Mix.10%) and (Mix.30%) vermicompost mixture. There were also significant differences between cover net treatments in affecting vegetative growth and yield of pepper, the white net was superior for producing pepper during the summer season; while the black net gave the lowest plant growth and yield. The best treatment was (Mix.20%) vermicompost mixture with white net cover, while the lowest vegetative growth and yield were obtained by (Control) vermicompost mixture with black cover net during the two tested seasons. These results suggested that vermicomposting and green roof can be used in urban area for producing food instead of incineration the urban organic wastes or imported food from rural area and using white cover net to improve the pepper growth and productivity during summer season.

THE CHEMISTRY OF PEAT: II. THE TRITERPENES OF PEAT MOSS (SPHAGNUM)

1958 ◽  
Vol 36 (6) ◽  
pp. 926-930 ◽  
Author(s):  
D. A. J. Ives ◽  
A. N. O'Neill
Keyword(s):  
Unsaponifiable Matter ◽  
Chemical Properties ◽  
Peat Moss ◽  
Physical And Chemical Properties ◽  
Chromatographic Fractionation ◽  
Physical And Chemical ◽  
And Chemical Properties

By further chromatographic fractionation of the unsaponifiable matter from an extract of peat moss (Sphagnum) three crystalline triterpenes have been isolated. They have been identified as α-amyrin, taraxerone, and taraxerol by their physical and chemical properties.

Statistical criteria of stellar population types

1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska
Keyword(s):  
Stellar Population ◽  
Chemical Properties ◽  
Spectrophotometric Study ◽  
Physical And Chemical Properties ◽  
Population Type ◽  
The Galaxy ◽  
Distribution Parameters ◽  
Physical And Chemical ◽  
Statistical Criteria ◽  
And Chemical Properties

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.

Response of corn (Zea mays L.) to various organic-based fertilizers in marginal upland of Sta. Rita, Samar

2017 ◽  
pp. 31-43
Author(s):  
Berta Ratilla ◽  
Loreme Cagande ◽  
Othello Capuno
Keyword(s):  
Block Design ◽  
Management Strategies ◽  
Chemical Properties ◽  
Organic Fertilizers ◽  
Growth And Yield ◽  
Physical And Chemical Properties ◽  
Total N ◽  
Randomized Complete Block Design ◽  
Physical And Chemical ◽  
And Chemical Properties

Organic farming is one of the management strategies that improve productivity of marginal uplands. The study aimed to: (1) evaluate effects of various organic-based fertilizers on the growth and yield of corn; (2) determine the appropriate combination for optimum yield; and (3) assess changes on the soil physical and chemical properties. Experiment was laid out in Randomized Complete Block Design, with 3 replications and 7 treatments, namely; T0=(0-0-0); T1=1t ha-1 Evans + 45-30-30kg N, P2O5, K2O ha-1; T2=t ha-1 Wellgrow + 45-30-30kg N, P2O5, K2O ha-1; T3=15t ha-1 chicken dung; T4=10t ha-1 chicken dung + 45-30-30kg N, P2O5, K2O ha-1; T5=15t ha-1 Vermicast; and T6=10t ha-1 Vermicast + 45-30-30kg N, P2O5, K2O ha-1. Application of organic-based fertilizers with or without inorganic fertilizers promoted growth of corn than the control. But due to high infestation of corn silk beetle(Monolepta bifasciata Horns), its grain yield was greatly affected. In the second cropping, except for Evans, any of these fertilizers applied alone or combined with 45-30-30kg N, P2O5, K2O ha-1 appeared appropriate in increasing corn earyield. Soil physical and chemical properties changed with addition of organic fertilizers. While bulk density decreased irrespective of treatments, pH, total N, available P and exchangeable K generally increased more with chicken dung application.

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