Matching of contactless and contact fingerprints has increased its attention in recent days. There have been only a few attempts to match contactless and contact-based fingerprints using Convolutional neural network (CNN) model. We collected a publicly available dataset of contactless and their corresponding contact-based fingerprints from Hong Kong Polytechnic University. The dataset consists of 3,120 contactless fingerprints and corresponding contact fingerprint images from 260 fingers of 6 impressions each. Due to the difference in nature of acquisition of both contact and contactless fingerprint first, we pre-process both the fingerprints to enhance the image quality. We train the CNN model using both fingerprints. In our work, we used the Sequential CNN model to increase the accuracy of matching contact and contactless fingerprint images

Key Word: contact-based fingerprints, contactless fingerprints, Convolutional neural network, Matching.

[1]. C. Lin and A. Kumar, "Matching contactless and contact-based conventional fingerprint images for biometrics identification," IEEE Transactions on Image Processing, vol. 27, no. 4, pp. 2018.
[2]. C. Lin and A. Kumar, "A CNN-based framework for comparison of contactless to contactbased fingerprints," IEEE Transactions on Information Forensics and Security, vol. 14, no. 3, pp. 662–676, 2019.
[3]. Steven A. Grosz, Joshua J. Engelsma and Anil K. Jain," C2CL: Contact to Contactless Fingerprint Matching", 2021.
[4]. A. Dabouei, S. Soleymani, J. Dawson, and N. M. Nasrabadi, "Deep contactless fingerprint unwarping," in 2019 International Conference on Biometrics (ICB), 2019, pp. 1–8.
[5]. P. Wild, F. Daubner, H. Penz, and G. F. Dom´ınguez, "Comparative test of smartphone finger photo vs. touch-based cross-sensor fingerprint recognition," in 2019 7th International Workshop on Biometrics and Forensics (IWBF). IEEE, 2019, pp. 1–6. .

African cities are currently experiencing strong growth. This has often been done to the detriment of the preservation of the environment in general and of trees in particular. In Sédhiou, a secondary town in southern Senegal, the phenomenon has grown in recent years. The tree is uprooted from houses to make room for various amenities. He is more vulnerable and his place is called into question in the home environment. The objective of this work is to study the place of the tree in the houses of the city of Sédhiou. Addressing such concerns required conducting a survey of household heads. It is applied to a sample (10% of households) determined by a non-probabilistic method and by quotas in order to promote information on the socio-cultural dimension, uses and nuisances of trees in the houses of Sédhiou. Then, Landsat 2000 and 2020 satellite images imported and processed by the supervised classification technique provided information on the dynamics of land use........

Key Word: Tree, House, City, Sedhiou, Casamance

[1]. Borelli S. Conigliaro M. et Pineda F. (2018), Les Forêts urbaines dans le contexte mondiale, in UNASYVA, FAO, volume 69, P3-10.
[2]. Salbitano F., Borelli S., Conigliaro M. et Chen Y. (2017), Directives sur la foresterie urbaine et périurbaine, étude FAO, Forêts n° 178, Rome, 178 pages (www.fao. org/3/b-i6210f.pdf).
[3]. CNULCD (2021), La Grande Muraille Verte, communiqué de presse, 13 pages. https://www.unccd.int/sites/default/files/inline-files/OPS%20Press%20kit%20FR%20Versio
[4]. SRSDS (1916), Situation Economique et Sociale Régionale, 218 pages. [5]. Vieri T., Fiorillo E. (2015), Dynamiques de l'occupation du sol et évolution démographique dans la région de Sédhiou (1988-2013), Report number: PAPSEN N° 18, 46 pages .

Acoustical measurements in a college auditorium took place using an empirical version of Sweep Sinusoidal. A first set of measurements were taken without anti-reverberant treatment of the walls. A second stage of the test was carried out with minor acoustical modifications on the building. A noticeable improvement was observed during this stage, particularly in amplitude loss in frequencies around 80 Hz.

Key Word: Sweep Sinusoidal, acoustic measurements, room acoustics.

[1]. Bjor, O.-H., & Nikolic, I. (2004). Building and room acoustics measurements with sine-sweep technique. Cfa/Daga, 423–424.
[2]. Bühler, D. (2001). Puebla : patrimonio de arquitectura civil del virreinato. 522. https://books.google.com/books/about/Puebla.html?hl=es&id=5KtdAAAAMAAJ
[3]. Everest, A. F., & Pohlman, K. C. (2009). Master Handbook of Acoustics 5th ed.
[4]. Javier, J., & Guzmán, G. (2020). Escuela de Artes Sonoras Proyecto Técnico Análisis y propuesta de implementación acústica y electroacústica.
[5]. SALVADOR GIL SANCHIS. (2020). Universitat politècnica de valència.
[6]. Tenutta, M., Bertinatti, A., Vicente, F., & Maggi, A. L. (2019). Evaluación de características acústicas de cabinas audiométricas fija y móvil del cintra. XXXVII, 5–7.

Present investigation is performed on the extraction of photosynthetic pigments like chlorophyll-a, chlorophyll-b and carotenoids in Carica Papaya L (Male and Female). by using different solvent like methanol, ethanol, diethyle ether, acetone and DMSO. Different trend is observed in extraction rate for chlorophylls and carotenoids. Methanol was shown to have the highest extraction rate of carotenoids and chlorophylls (chlrophylls a and b) in the male Carica Papaya L. species from the Kachchh region. 95% ethanol demonstrates the maximum extraction of chlorophylls (Chlorophyll a and b) and carotenoids for female Carica Papaya L. species from the kachchh area. Dimethyl-sulphoxide (DMSO) exhibits the highest extraction of chlorophylls (Chlorophyll a and b) from the leaves of the male Carica Papaya L. Saurashtra species, while 95 %ethanol is the best solvent for carotenoids. The species chlorophylls (chlrophyll a and b) and carotenoids provide the greatest amount of extraction in diethyl-ether for female Carica Papaya L.from the Saurashtra region

Key Word: Solvent extraction, chlorophylls, carotenoids, Carica Papaya L., Kachchh, Saurashtra, UV-VIS Spectroscopy analysis

[1]. Zeidali, Ehsan, et al. "Ethnopharmacological survey of medicinal plants in semi-arid rangeland in western Iran." Cent. Asian J. Plant Sci. Innov 1.1 (2021): 46-55.program (NCEP) expert panel on detection, evaluation, and treatment of highblood cholesterol in adults (adult treatment panel III) finalreport. Circulation. 2002;106(25, article 3143).
[2]. Chikezie, P. C., C. O. Ibegbulem, and F. N. Mbagwu. "Medicinal potentials and toxicity concerns of bioactive principles." Med Aromat Plants 4.3 (2015): 1-15.
[3]. Hishe, Mebrahtu, ZemedeAsfaw, and MirutseGiday. "Review on value chain analysis of medicinal plants and the associated challenges." Journal of Medicinal Plants Studies 4.3 (2016): 45-55.
[4]. Ramesh, Halavath, and M. F. Valan. "Rethinking on Using of Traditional Indigenous Medicinal Plants for the Management of Covid-19 In India-A Review." International Journal of Ayurveda and Pharma Research (2021): 53-63.
[5]. Balkrishna, Acharya, Pallavi Thakur, and AnuragVarshney. "Phytochemical profile, pharmacological attributes and medicinal properties of convolvulus prostratus–A cognitive enhancer herb for the management of neurodegenerative etiologies." Frontiers in pharmacology 11 (2020): 171.

A duffing system can respond chaotically to harmonic excitation under the effect of drive parameters, according to the literature, but there is a paucity of materials on how it responds to periodic excitations under the impact of drive parameters. This research is motivated by a desire to learn more about the oscillator's response to periodic excitations. Gram-schmidt orthogonalization was used to simulate and estimate average Lyapunov exponents to characterize the behavior of a duffing oscillator under periodic excitations when constant time step Runge kutta fourth order algorithms were used to solve the periodically excited duffing oscillator using very close initial conditions at constant drive parameter values with amplitude ranging from 0.07 to 1.5. To validate the PYTHON codes used in this research, the simulated results for the selected periodic excitations were used to create characterization graphs showing the behavior of each periodic excitation (Square wave, Triangle wave, Sawtooth wave) with reference to the harmonic excitation for the selected drive parameter combinations.......

Key Word: Periodically excited oscillator, Characterization, Duffing Oscillator, nonlinear system, Lyapunov exponents, Gram Schmidt orthogonalization

[1]. Andrews, N. K. (2021). Digital Commons @ Georgia Southern Numerical Approximation of Lyapunov Exponents and its Applications in Control Systems. Georgia Southern University.
[2]. Bowong, S., Kakmeni, F. M. M., & Luc, J. (2006). Chaos control in the uncertain duffing Oscillator. Journal of Sound and Vibration 292, 292, 869–880. https://doi.org/10.1016/j.jsv.2005.09.009
[3]. Dowell, E. H. (1988). Chaotic oscillations in mechanical systems. School of Engineering, Duke University, Durham, 30(1), 171–184.
[4]. Moon, F. M. (2004). Chaos Vibrations: An introduction for applied scientists and engineers. (Paper back).
[5]. Salau, T. A. ., & Ajide, O. . (2013). Application of average Postive lyapunov in estimation of chaotic response peak excitation frequency of harmonically excited Pendulum. International Journal of Advances in Engineering & Technology., 6(3), 1409–1423.

This study is on the performance analysis of different chemical compounds in various solvent as pour point depressants (PPD) for crude oil. Triethanolamine and Polymethacrylate were the chemical components, while the solvents were Dual Purpose Kerosene (DPK), Automotive Gas Oil (AGO) and Ethanol. The chemical compounds and the solvents used as PPDs were in the ratio of 1:10. The experiment was carried out in accordance with ASTM D97 using a SETA cloud and pour point refrigerator. Pour points of the crude before and after treating with a pour point depressant were obtained and recorded. The pour point depressant tagged A3, displayed a poor flow improving capability with a pour point reduction value of 3°C owing to chemistry of hybridized shell of the polymer. The analysis of Polymethacrylate + DPK and Polymethacrylate + AGO tagged, A2 and A1 showed relatively good effect on the pour point of the crude oil samples with a corresponding depression value of 28°C and 25°C respectively. The pour point depressant containing Triethanolamine + Ethanol tagged B3, gave an excellent result in the pour point depression of the crude oil with a value of 31°C. This indicates that, Triethanolamine + Ethanol tagged B3, is a good pour point depressant and crude oil flow improver.....

Key Word: Paraffins, Triethanolamine, Polymethacrylate, Crude oil, Flow Assurance

[1]. Kelland, A M, (2009) Production Chemicals for Oil and Gas Industry. S.l, CRC Press
[2]. Koshel, KC & Kapoor, S. (1999) 'Effect of Flow Improver on Indian Wester Offshore Crudecarrying Pipeline A Case Study. SPE Annual Conference and Exhibition
[3]. Adewusi, V A, (1997) Prediction of Was Deposition Potential of Hydrocarbon Systems From Viscosity Pressure Correlation Elsevier Fuel Journal, 76(12), pp. 1079-1083
[4]. Ajienka, A. & lkoku, C, (1990) Waxy Crude Oil Handling in Nigeria Practices, Problems and Energy Sources, 12(4). pp. 463-478
[5]. Sulaimon, A. A & Falade, J. K. (2010). A Proactive Approach for Predicting and Preventing Wax Deposition in Production Tubing Strings, Journal of Petroleum and Gas Engineering. 1(2), pp. 26-36

The isotopic elements obviously have no location in "the Periodic Table of the Chemical Elements". To resolve the ranking location of isotopes' place in the periodic table, to Constructing "Element's Periodic Law of Three-dimensional (solid)" becomes inevitable. The author summarizes the formation and development of the periodic law of chemical elements forms four stages: single→1D→2D→3D.

Key Word: Chemical element periodic table in plane; SNP; DNP; Isotopic center; 3DPeriodic System of Elements.

[1]. Н. Л. Глинка. Общая химия. 殷恭宽, 张志炳, 等译北京: 高等教育出版社, 1956.
[2]. 杨 奇，陈三平，邸友莹，周春生，高胜利.大学化学, 2017, 32 (6), 46.
[3]. 李中聖. 也论化学元素周期表的形成和发展[J].北京：《大学化学》，2019, 34 (7), 90−94
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