Statistical calculation of thermodynamic functions of a substance adsorbed on graphite. Part 2.—Adsorption of benzene on graphite

1963 ◽  
Vol 59 (0) ◽  
pp. 428-436 ◽  
Author(s):  
A. V. Kiselev ◽  
D. P. Poshkus
Keyword(s):  
Thermodynamic Functions ◽  
Statistical Calculation ◽  
Graphite Part

Experimental and Theoretical (ab initio and DFT) Analysis of UV-Vis Spectra, Thermodynamic Functions and Non-linear Optical Properties of 2-Chloro-3,4-Dimethoxybenzaldehyde

2015 ◽  
Vol 8 (2) ◽  
pp. 2122-2134
Author(s):  
Sarvendra Kumar ◽  
Rajesh Kumar ◽  
Jayant Teotia ◽  
M. K. Yadav
Keyword(s):  
Thermodynamic Functions ◽  
Title Compound ◽  
Density Functional ◽  
Structural Characteristics ◽  
Basis Sets ◽  
Ultraviolet Absorption Spectrum ◽  
Non Linear ◽  
Different Temperatures ◽  
Linear Optical Properties ◽  
Linear Optical

In the present work, UV- Visible spectra of 2-Chloro-3,4-Dimethoxybenzaldehyde (2,3,4-CDMB) compound  have been carried out experimentally and theoretically. The ultraviolet absorption spectrum of title compound in three solvents (Acetone, Diethyl Ether, CCl4) of different polarity were examined in the range of 200–500 nm. The structure of the molecule was optimized and the structural characteristics were determined by HF and DFT (B3LYP) methods with 6-31+G(d,p) and 6-311++G(d,p) as basis sets. The excitation energy, wavelength corresponds to absorption maxima () and oscillator strength (f) are calculated by Time-Dependent Density Functional Theory (TD-DFT) using B3LYP/6-31+G(d,p) and B3LYP/6-311++G(d,p) as basis sets. The electric dipole moment (μ), polarizability (α) and the first hyperpolarizability (β ) have been computed to evaluate the non-linear optical (NLO) response of the investigated compound by HF and DFT (B3LYP) with already mentioned basis sets. Thermodynamic functions of the title compound at different temperatures were also calculated.

Students’ Understanding of Generic Structure of the Text and the Quality of Writing: A Correlational Study

2019 ◽  
Vol 2 (1) ◽  
pp. 37-45
Author(s):  
Atikah Wati
Keyword(s):  
High School ◽  
Research Design ◽  
Senior High School ◽  
Second Grade ◽  
Statistical Calculation ◽  
Writing Quality ◽  
Generic Structure ◽  
Writing Test ◽  
Correlational Research

Indriyani et al, (2013) stated that many students had dificulty in understanding the generic structure of analytical exposition text. Therefore, the present study tried to investigate the correlation between students understanding in writing generic structure of analytical exposition and the quality of students’ writing in second grade of senior hight school. Grounded in explanatory correlational research design by Creswell (2011), this study conducted over two weeks in one of senior high school in Indramayu. Close-ended questionnaire and writing test were instruments to collect the data and it was analyzed  by using SPSS 22. The statistical calculation from students understanding in writing generic stucture of the text and writing test indicated that the value of tcount was 3.23 and the value of ttable was 0.361. It can be concluded that the hypothesis was accepted because tcount 3.23 > ttable 0.361. The finding reveal that there was middle correlation or middle prediction in students understanding of generic structure of analytical exposition and students writing quality with the score 0,52.

Thermodynamic functions of the reactions of anodic oxidation of niobium and tantalum

2019 ◽  
pp. 36-41
Author(s):  
A.S. Kamysheva ◽  
◽  
A.I. Koroleva ◽  
L.P. Mileshko ◽  
◽  
...  
Keyword(s):  
Anodic Oxidation ◽  
Thermodynamic Functions
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