Pyrolysis of algal biomass: Determination of the kinetic triplet and thermodynamic analysis

2020 ◽  
Vol 317 ◽  
pp. 124007
Author(s):  
Vikul Vasudev ◽  
Xiaoke Ku ◽  
Jianzhong Lin
Keyword(s):  
Thermodynamic Analysis ◽  
Algal Biomass ◽  
Kinetic Triplet ◽  
Biomass Determination

Biovolume as a tool in biomass determination of Oligochaeta and Chironomidae

1993 ◽  
Vol 29 (1) ◽  
pp. 37-46 ◽  
Author(s):  
HENK SMIT ◽  
ESTI DUDOK HEEL ◽  
SASKIA WIERSMA
Keyword(s):  
Biomass Determination

scholarly journals Effects of Fertilization on Biomass and Macronutrient Content of Eucalyptus urophylla S.T. Blake in Arenized Soil of Pampa Biome

2019 ◽  
pp. 1-10
Author(s):  
Huan Pablo de Souza ◽  
Mauro Valdir Schumacher ◽  
Aline Aparecida Ludvichak ◽  
Dione Richer Momolli ◽  
Claudiney Do Couto Guimarães ◽  
...  
Keyword(s):  
Biomass Accumulation ◽  
Stem Bark ◽  
Total Biomass ◽  
Eucalyptus Urophylla ◽  
Stem Wood ◽  
Randomized Design ◽  
Pampa Biome ◽  
Biomass Determination ◽  
To Receive

The objective of this study was to quantify the biomass and the macronutrient stock in an experiment of fertilization with Eucalyptus urophylla, planted in arenized soil at 12 months-old, in Rio Grande do Sul, Brazil. The experiment had a completely randomized design with five treatments (T1, T2, T3, T4 and T5) with three replications. The treatments T2, T3, T4 and T5, received increasing doses of triple superphosphate. On the other hand, the T1 treatment was the only one to receive natural phosphate in planting. For the determination of the biomass, fifteen trees were felled and separated in the following components: leaves, branches, stem bark, stem wood and roots. Samples of the components were collected and transported to the laboratory for biomass determination and chemical analysis. The total biomass varied between the treatments, with highest biomass accumulation of 6.83 Mg ha-1 occurring in T5. The T1 presented the highest biomass for roots representing 33.4% of the total biomass. The biomass distribution among the different components in the decreasing order was: roots > stem wood > leaves > branches > stem bark, for all the treatments. The treatment with higher doses of fertilizers (T5) presented the highest amount of nutrient accumulation in the total biomass (131.26 kg ha-1). The concentration and accumulation of nutrients presented the following trend K > N > Ca > Mg > P > S. Analyzing the different components of biomass, the highest amounts of nutrients followed the order: leaves > roots > stem wood > branches > stem bark. Fertilization influenced the biomass production of E. urophylla in arenized soil in the Pampa biome, but without significant differences to date (12 months). The leaves had the highest concentration of macronutrients, with the exception of Ca, which was higher in the bark. The K was the element that presented highest accumulation in whole tree. The plantation of eucalyptus with fertilization management may be an alternative for the economic use of arenized soil.

Thermodynamic Analysis of Thermoelastic Martensitic Transformations

2004 ◽  
Vol 449-452 ◽  
pp. 1325-0 ◽  
Author(s):  
Yinong Liu
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Experimental Determination ◽  
Thermodynamic Parameters ◽  
Thermodynamic Analysis ◽  
Martensitic Transformations ◽  
Thermoelastic Martensitic Transformations ◽  
The Past ◽  
Concise Overview

This paper is concerned with the application of fundamental thermodynamic theories in the analysis of thermoelastic martensitic transformations in shape memory alloys, with a particular reference to polycrystalline NiTi. The discussion is delivered in two parts. The first part presents a concise overview of the fundamental theories of thermodynamics of thermoelastic martensitic transformations established in the past 30 years. The second part focuses on the principles governing the application of the theories, interpretation of the thermodynamic parameters defined in the theories, experimental determination of the parameters, and some common misperceptions and unjustified assumptions in practice concerning these parameters.

In Situ Mg2Si Reinforced Mg Alloy Synthesized in Mg-SiO2 System

2010 ◽  
Vol 146-147 ◽  
pp. 1775-1779
Author(s):  
Dan Huang ◽  
Yan Li Wang ◽  
Ying Wang ◽  
Hong Bao Cui ◽  
Xue Feng Guo
Keyword(s):  
Thermodynamic Analysis ◽  
Equilibrium Diagram ◽  
Mg Alloy ◽  
Experimental Temperature ◽  
Chinese Script ◽  
Solidification Condition ◽  
Sio2 System ◽  
Primary Mg2si

The thermodynamic analysis in Mg-SiO2 system was conducted for the determination of the priority reaction at experimental temperature. Then, Mg2Si reinforced Mg alloy was synthesized through reaction in Mg-SiO2 system at 730°C, whose Si mass fraction is up to approximately 10%. The thermodynamic analysis and microstructure investigation results show, that generation of reinforcing phase of Mg2Si in Mg alloy from the reaction in Mg-SiO2 system is feasible with lower free energy than that in Mg-Si at the same temperature; and under the experimental temperature and solidification condition, the microstructure of Mg-10Si alloy is composed of coarse primary Mg2Si dendrite crystal, Chinese script type eutectic Mg2Si, and α–Mg phase, the formation of α–Mg holes is resulted from the relatively high cooling rate leading to a deviation from the equilibrium diagram during solidification.

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