Volume 01, Issue 02, June 2023
Citation Analysis On The Structure, Composition And Habitual Possibilities Of The Martian Atmosphere
Avani Premprakash a, Ayushy Unnikrishnan b, Ajeena A Rahim b, Dr. Reenu Jacob a, Dr. Sibi K S b*
a Department of Physics, CMS College Kottayam (Autonomous), Kerala 686001
b Department of Physics, University of Kerala, Thiruvananthapuram 695581
* Corresponding author: Email address: sibi@keralauniversity.ac.in (Sibi K.S)
Abstract
The concerned study is an analysis of the Red Planet Mars’s atmosphere and its various aspects in the past, present as well future and, thereby, the possibility of life on the planet, which has been done via the citation analysis of related journals and publications with keywords mars, Martian atmosphere, and life. The citation network developed by VOS Viewer is used for the statistical and conceptual analysis of the concerned papers. The studies of the Martian atmosphere have a significant impact on knowing the atmospheric compositions and dust storm activities in the Martian atmosphere. This work can be a valuable reference for further investigation in the field for having a smooth experimental and habitual environment.
A study on Structural and Optical properties of Sr3(VO4)2 ceramic
B. Vasanthi a, b , N. Gopakumar b , P. S. Anjana a[1]
a PG Department of Physics, All Saints’ College, University of Kerala, Thiruvananthapuram, Kerala, India,695007
bPG Department of Physics and Research Centre, Mahatma Gandhi College, University of Kerala, Thiruvananthapuram, Kerala, India, 695004
[1] Corresponding author: psanjanaa@yahoo.com
Abstract
Sr3(VO4)2 ceramic has been synthesized using conventional solid state reaction method. The structural and optical properties of synthesized ceramic done using X-ray diffraction ( XRD), Fourier Transform Infra-Red spectroscopy (FTIR) and UV-Visible absorption spectroscopy. XRD analysis reveals that the synthesized ceramic exists in single phase with rhombohedral structure. The space group is R-3m (166) with lattice parameters a = 5.6197(2) Å and c = 20.103(2) Å. It possess centro-symmetric in crystal structure. The various vibrational bands present in the Sr3(VO4)2 ceramic are identified from FTIR study. The electronic transitions and optical band gap of the ceramic is recorded from UV- Visible spectrum. The ceramic has a direct band gap of 3.23 eV. The synthesized orthovanadates has peculiar role in the field of light emitting diodes, solid state lighting and photocatalytic purposes.
Effect of RF power on the structural, morphological and optical properties of RF sputtered zinc oxide thin films
Sreeja Sreedharan. Ra,b[1]
aDepartment of Physics, Sanatana Dharma College, University of Kerala, Alappuzha, 688 003, Kerala, India.
bDepartment of Optoeiectronics, University of Kerala, Kariavattom, 695 581, Kerala, India
[1] Corresponding author: Email address: sreeja.sreedharan@sdcollege.in (Sreeja Sreedharan R)
Abstract
The properties of the sputtered films are highly influenced by the preparation conditions. An attempt is made to optimize the preparation conditions of RF sputtered ZnO films in terms of RF power. The structural, morphological and optical properties of the films were studied to investigate the influence of RF power on the crystalline quality, surface morphology, transmittance and luminescent properties of sputtered films.
Observed Changes in the Convective Parameters over Chennai
Athira Sasikumar a,b and Veena Suresh Babu a*
a PG Department of Physics, All Saints’ College, University of Kerala, Thiruvananthapuram, Kerala, India,695007
b PG Department of Physics and Research Centre, MG College, University of Kerala, Thiruvananthapuram, Kerala, India,695004
* Corresponding author: veenasbabu@gmail.com
Abstract
Different events are happening every time in the atmosphere in which much of them are randomly generated. The studies on thermodynamic environments supporting convection is important for understanding potential changes in a climate. Parameters like Convective available potential energy, Level of free convection, Equivalent temperature, pressure is varying time to time. In this work, we have performed comparative day to day, monthly and seasonal variations of convective parameters by using the data from Chennai region, for the year 2022.The variations in CAPE are connected to the changes in atmospheric energy balance and convective activity, making them a possible indication of climate change. The seasonal fluctuations demonstrate that the CAPE is larger during the monsoon than it is during the pre-monsoon or post-monsoon seasons, which shows that large-scale dynamics and thermodynamic conditions conducive to high CAPE are required for organised monsoon convections across this region. The monsoon rainfall over the Indian subcontinent may be maintained by the systematic growing tendency in CAPE, which may be compensating for weakening of the monsoon circulation.
Green synthesis of Nickel Oxide Nanoparticle for the Adsorption of Water Pollutants
Sreelekshmi A a, Rajalakshmi Soman a, Anagha Ravi a, Darsana S a, Prema K H a*
a Post Graduate Department of Chemistry and Research Centre, Sanatana Dharma College (Affiliated to University of Kerala) Alappuzha, Kerala, India, 688003
* Corresponding author: premakh@gmail.com
Abstract
Green mediated solution combustion method for the development of nanoparticles attained considerable attraction owing to its non-toxic and eco-friendly nature. In this work nickel oxide nanoparticles have been synthesized via green supported method, in which Annona Muricata leaves extract, Simarouba glauca leaves extract, Chromolaena odorata leaves extract and Rutacea leaves extract were serve as the medium. The main attraction of this work is that, the synthesized nanoparticle is free from external capping agents and it reduces the use of toxic reducing agents. Various characterization techniques such as XRD, SEM and EDAX were used to study the morphology and structure of synthesized nanomaterial. XRD pattern confirms the formation of nickel oxide nanoparticles and predicted the face centred cubic structure of the material. Adsorption studies suggested that, nickel oxide nanoparticle is a suitable catalyst for the removal of methylene blue from water.