scholarly journals AGE-SPECIFIC DYNAMICS OF ESSENTIAL OIL CONTENT IN ABIES SIBIRICA BARK. THEORETICAL ASPECTS OF EVALUATION

2021 ◽  
pp. 175-182
Author(s):  
Sergey Viktorovich Ushanov ◽  
Valentina Mikhaylovna Ushanova
Keyword(s):  
Experimental Data ◽  
Essential Oil ◽  
Oil Content ◽  
Age Groups ◽  
Compartment Model ◽  
Parametric Identification ◽  
Simulation Method ◽  
Forest Steppe ◽  
Siberian Fir ◽  
Abies Sibirica

The variability of the essential oil content in Abies Sibirica bark in the Eastern and Western parts of the Krasnoyarsk forest-steppe was evaluated in eight age groups. The model of the age dynamics of changes in the essential oil content in the bark of Abies Sibirica, which is adequate to the experimental data, was obtained. With increasing age of fir, the content of fir oil in the bark increases from 1.4±0.1% of a. s. s. in 20–30 years of age to 2.8±0.2% of a.s.s. at the age of 70–80 years, with further decreases to 0.4±0.1% of a. s. s. in overmature trees. The results of parametric identification of the model for Abies Sibirica growing in the Krasnoyarsk forest-steppe are presented. Based on the results of 50.000 computational experiments, the simulation method estimates the statistics of changes in the model coefficients and 95% of the boundary of the forecast values of the content of fir oil in the bark. A compartment model is proposed that explains the age-specific dynamics of essential oil content in tree greens and Siberian fir bark. The obtained solution compartment model allows us to associate its parameters with the coefficients of models of changes in the content of fir oil in tree greens and bark obtained by processing experimental data.

SOME RESULTS OF THE STUDY ON SIBERIAN FIR (ABIES SIBIRICA LEDEB) GROWN IN THE NURSERY OPEN FIELD AND GREENHOUSE

2018 ◽  
Vol 21 (02) ◽  
pp. 53-58
Author(s):  
Oyun Ch ◽  
Bat-Erdene J
Keyword(s):  
Open Field ◽  
Ground Surface ◽  
Geographic Location ◽  
Growth Dynamics ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Siberian Fir ◽  
Abies Sibirica ◽  
Development Stages ◽  
Narrow Row

The present study aims to investigate growth dynamics of Siberian fir (Abies sibirica Ledeb) saplings and determine their development stages. Siberian fir seeds were planted in the open field and in the greenhouse at narrow-row spacing (10x5x15x5x15x5x15x5x15x5x10) with 1200 saplings selected as random samples. Climate of a given region is mainly affected by interrelated factors such as geographic location, ray of sunlight, atmospheric cycle and ground surface. Therefore, the study determines air temperature, precipitation, humidity, air heat and dynamics of saplings. The study also suggests that there are seven stages of growth of saplings and starting from the eighth stage, saplings reach 2 years old. Because this is the first study on growing Siberian firs directly from seeds in forest-steppe zone in Mongolia, it determines growth dynamics and development stages of 1-3 years old saplings and would serve as the basis for further studies on Siberian firs.

Numerical Simulation of Ozone Oxidation on Oily Wastewater

2011 ◽  
Vol 71-78 ◽  
pp. 2721-2726
Author(s):  
Meng Fu Zhu ◽  
Cheng Deng ◽  
Xiu Dong You ◽  
Hong Bo Su ◽  
Ping Chen
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Oil Content ◽  
Simulation Method ◽  
Pollutant Removal ◽  
Oily Wastewater ◽  
Theory Analysis ◽  
Reaction Equation ◽  
Simulation Results ◽  
Set Up

A simulation method was presented based on the theory analysis and ozone reaction equation. The preliminary mathematical models of ozonation correlative to oily pollutant removal were set up by numerical simulation. The ozonation models implied removal ratio of oil related to reaction time, ozone dosage and initial oil content. The simulation results were consistent with the experimental data.

scholarly journals COMPOSITION AND PROPERTIES OF ESSENTIAL OIL OF SIBERIAN FIR ABIES SIBIRICA LDB., GROWING IN DIF-FERENT AREAS OF THE KIROV REGION

2020 ◽  
pp. 291-297
Author(s):  
Evgeniya Sergeyevna Solovyova ◽  
Tat'yana Anatol'yevna Adamovich
Keyword(s):  
Essential Oil ◽  
Physicochemical Properties ◽  
Acid Number ◽  
Raw Material ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Siberian Fir ◽  
Abies Sibirica ◽  
The Village ◽  
Derivatives Of

Siberian fir (Abies sibirica Ldb.) Is a raw material for obtaining valuable essential oil. A change in the composition of the plant's essential oil can serve as a sign of the ecological disadvantage of the territory. The aim of the work was to study the composition and physicochemical properties of Siberian fir essential oil, which grows in different regions of the Kirov region. Sampling sites were distinguished by their location, climate and level of anthropogenic load. Essential oil was obtained by steam distillation. Samples were studied by organoleptic and physicochemical properties, their composition was determined by gas chromatography-mass spectrometry. It was established that the acid number was increased in the obtained oil samples, and oxygen-containing derivatives of terpenes (bornyl acetate) prevailed in their composition. Especially a lot of oxygen-containing substances was found in fir essential oil, which grows in large industrial centers of the region (the cities of Kirov and Kirovo-Chepetsk). The predominance of monoterpene hydrocarbons (camphene, limonene) was found in the composition of fir essential oil from the village of Ilyinskoye. Sesquiterpenoids in the samples were contained in a small amount, and camphor was noted only in the sample of fir oil from the village of Loino. The study confirms the data that with increasing pollution of the territory in the composition of the essential oil of Siberian fir, the share of bornyl acetate and other oxygen-containing compounds begins to increase.

Parthenolide and essential oil content in the aerial parts of Tanacetum larvatum

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
VM Tadić ◽  
IS Aljanèić ◽  
VE Vajs ◽  
SM Milosavljević ◽  
N Todorović ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Aerial Parts

МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ ДИНАМИКИ МИНЕРАЛЬНОГО ПИТАНИЯ РАСТЕНИЙ В СИСТЕМЕ «УДОБРЕНИЕ-ПОЧВА-РАСТЕНИЕ»

2020 ◽  
Vol 65 (6) ◽  
pp. 1219-1229
Author(s):  
В.А. Четырбоцкий ◽  
◽  
А.Н. Четырбоцкий ◽  
Б.В. Левин ◽  
◽  
...  
Keyword(s):  
Experimental Data ◽  
Temporal Dynamics ◽  
Plant Biomass ◽  
Environmental Parameters ◽  
Parametric Identification ◽  
Agricultural Crop ◽  
Parameter System ◽  
Plant Nitrogen ◽  
Rhizosphere Microorganisms ◽  
Nitrogen Phosphorus

A numerical simulation of the spatial-temporal dynamics of a multi-parameter system is developed. The components of this system are plant biomass, mobile and stationary forms of mineral nutrition elements, rhizosphere microorganisms and environmental parameters (temperature, humidity, acidity). Parametric identification and verification of the adequacy of the model were carried out based on the experimental data on the growth of spring wheat «Krasnoufimskaya-100» on peat lowland soil. The results are represented by temporal distributions of biomass from agricultural crop under study and the findings on the content of main nutrition elements within the plant (nitrogen, phosphorus, potassium). An agronomic assessment and interpretation of the obtained results are given.

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