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Chemical variability
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Part 2 book "Process modeling, simulation and control for chemical engineers" includes content: Frequency domain dynamics; frequency domain analysis of closedloop systems; process identification, matrix properties and state variables; analysis of multivariable systems; design of controllers for multivariable processes, sampling and Z transforms; stability analysis of sampled data systems, design of digital compensators.
425p
muasambanhan09
12-03-2024
5
0
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Part 1 book "Elementary principles of chemical processes" includes content: What some chemical engineers do for a living, introduction to engineering calculations, processes and process variables, fundamentals of material balances, single phase systems, multiphase systems.
340p
muasambanhan09
12-03-2024
2
0
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Part 1 book "Elementary principles of chemical processes" includes content: What some chemical engineers do for a living, introduction to engineering calculations, processes and process variables, fundamentals of material balances, single phase systems.
292p
muasambanhan09
12-03-2024
1
0
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Part 2 book "Chemical reaction engineering - Essentials, exercises and examples" includes content: Catalysis - Analyzing variables influencing the catalytic properties; ideal reactors, specific reactors; comparison of reactors; combination of reactors; transport phenomena in heterogeneous systems; catalyst deactivation; exercises reactors and heterogeneous reactors,... and other contents.
429p
muasambanhan09
12-03-2024
3
1
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Part 1 book "Data processing and reconciliation for chemical process operations (Vol 2)" includes content: General introduction; estimability and redundancy within the framework of the general estimation theory; classification of the process variables for chemical plants; decomposition using orthogonal transformations; steady state data reconciliation; sequential processing of information; treatment of gross errors.
155p
muasambanhan09
16-03-2024
9
1
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Part 2 book "Applied mathematics and modeling for chemical engineers" includes content: Numerical solution methods (initial value problems), approximate methods for boundary value problems - weighted residuals, introduction to complex variables and laplace transforms, solution techniques for models producing PDEs, transform methods for linear PDEs, approximate and numerical solution methods for PDEs.
247p
muasambanhan08
01-03-2024
2
1
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Part 2 book "Mathematical modeling in chemical engineering" includes content: Numerical methods, statistical analysis of mathematical models; microscopic transport equations, dimensionless variables, student’s t-distribution.
104p
muasambanhan06
01-02-2024
2
0
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Part 1 book "Human scent evidence" includes content: Introduction and historical perspectives; production of human scent; chemical composition of human scent - a volatile perspective; variability of human scent; collection of human scent as forensic evidence.
84p
muasambanhan06
03-02-2024
4
1
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Part 1 book "An introduction to chemical engineering kinetics and reactor design" includes content: Stoichiometric coefficints and reaction progress variables; thermodynamics of chemical reactions; basic concepts in chemical kinetics determination of the reaction rate expression; basic concepts in chemical kinetics - molecular interpretations of kinetic phenomena; chemical systems involving multiple reactions; elements of heterogeneous catalysis; liquid phase reactions; basic concepts in reactor design and ideal reactor models
325p
muasambanhan06
03-02-2024
4
1
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Coliform bacteria are essential variables for assessing riverine water quality. In this study, the faecal indicator bacteria (FIB) in relationship with some physico-chemical variables were investigated during the period 2020-2022 for four urban rivers (To Lich, Lu, Set, and Kim Nguu) in the inner Hanoi city to provide the updated water quality of these rivers.
14p
vialfrednobel
21-12-2023
3
2
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Continued part 1, part 2 of ebook "Maintenance engineering handbook" provides readers with contents including: maintenance of electrical equipment; instruments and reliability tools; lubrication; chemical corrosion control and cleaning; maintenance welding;...
511p
hanlinhchi
29-08-2023
5
2
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Anastrepha fraterculus is one of the most important fruit fly plagues in the American continent and only chemical control is applied in the field to diminish its population densities. A better understanding of the genetic variability during the introduction and adaptation of wild A. fraterculus populations to laboratory conditions is required for the development of stable and vigorous experimental colonies and mass-reared strains in support of successful Sterile Insect Technique (SIT) efforts.
8p
vinarcissa
21-03-2023
4
1
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Medicinal plants contain a large variety of chemical compounds in highly variable concentrations, so the quality control of these materials is especially complex. With this purpose, regulatory institutions have accepted chromatographic fingerprints as a valid tool to perform the analyses.
11p
vironald
15-12-2022
9
2
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DNA is subject to constant chemical modification and damage, which eventually results in variable mutation rates throughout the genome. Although detailed molecular mechanisms of DNA damage and repair are well understood, damage impact and execution of repair across a genome remain poorly defined.
23p
vigalileogalilei
27-02-2022
8
1
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The present study aimed to evaluate physicochemical characteristics and quality of honey from different origins. Melissopalynological analysis of honey samples showed a wide variability, with samples from different honey sources being collected from different geographical origins.
9p
schindler
30-12-2021
11
0
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In order to compare species compositions of ostracods, 25 streams and 15 lakes were sampled in the spring, summer, and autumn seasons of 2018. A total of 26 ostracod species were found in lakes (18 spp.) and streams (12 spp.). The Shannon index (H’) and evenness values of streams were higher than in lakes in all seasons. The highest H’ values for all combined (lakes + streams) and lake data were reported in the autumn season, and in spring the highest values were in streams.
13p
dolomite36
30-12-2021
7
0
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The results indicated that essential oil obtained from catmint and lemon catnip showed significant variability in their content and chemical composition. Percentage of essential oil content of catmint 1st and 2nd cuts during 1st season were 0.107% and 0.253% whereas recorded for the 2nd season 0.117% and 0.247%, respectively.
5p
schindler
30-12-2021
4
0
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The aim of this study was to examine qualitatively the effect of important electrochemical parameters on the faradaic impedance spectra of oxalic acid electroreduction. The impedance spectrum of a 3-step oxalic acid electroreduction mechanism was simulated by the solution of a faradaic impedance equation based on 3 state variables. Before the solution of the faradaic impedance equation, the electroreduction mechanism was analyzed and it was seen that this mechanism can be represented by an electrical circuit composed of 2 resistors and a capacitance or inductance.
15p
langthannam
29-12-2021
17
0
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Mixed-phased Inx Sey thin film containing InSe, In2 Se3 and In6 Se7 phases was prepared by M-CBD method and characterized by X-ray diffraction, AFM, optical spectroscopy and J-V measurements. Structural, optical and electrical conductance properties were modified by annealing the films at different temperatures. Optical and morphological properties were also investigated dependently on temperature and concentration of cationic precursor solution.
13p
langthannam
29-12-2021
13
1
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This study presented a complete and comprehensive database of characteristics of a wide range of agricultural and forest residues. Moisture, bulk density, calorific value, proximate and elemental compositions, as well as cellulose, hemicellulose, and lignin compositions of a wide range of biomass residues were analyzed. The major impacts of the variability in biomass compositions to biochemical and thermochemical processes were also discussed.
9p
kequaidan11
07-04-2021
14
2
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