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Research Publication 16

Recent Submissions

Halophilic Aspergillus penicillioides-a Specialist Group of Fungus and its Morphological Adaptations in Hypersaline Environments
(Mycological Society of India, 2024-08-01) Valerie Gonsalves; Sarita W Nazareth
Halophilic fungi undergo various changes that enable them to adapt to osmotic pressure as well as toxicity of salt in the environment. Although several studies have been investigated on osmoadaptations of halophilic fungi to saline conditions, there are few reports on analysis of the fungal mechanisms occurring at micro and macro morphological levels that enable fungi to survive in saline environments. The current work reports the effects of salt on colony growth and micromorphology in obligate Aspergillus penicillioides and its mechanism of survival in saline environments.
Bis(4-aminopyridinium) and bis(2-amino-6-methylpyridinium) cations stabilised by [MS4]2− anions: Synthesis, crystal structures, Hirshfeld surface analysis and sulfur transfer reactions
(Elsevier, 2025-01-01) Milagrina D’Souza; Nikita N. Harmalkar; Vishnu R. Chari; Beena K. Vernekar; Sunder N. Dhuri
Four new organic ammonium tetrasulfidometallates: (4-aminopyridinium)2[MoS4]·H2O 1, (4-aminopyridinium)2[WS4]·H2O 2, (2-amino-6-methylpyridinium)2[MoS4] 3, and (2-amino-6-methylpyridinium)2[WS4] 4 have been synthesized by a well-known base promoted cation exchange method. All compounds were characterized by elemental analysis, IR/Raman/UV–Vis spectroscopy, thermogravimetric analysis, and X-ray crystallography. The structures of 1 and 2 consist of unique tetrahedral [MoS4]2− and [WS4]2− dianions, which are charge-balanced by crystallographically independent 4-aminopyridinium monocations. Additionally, both have a lattice water molecule, which contributes to the overall stability of their structures. In compounds 3 and 4, 4-aminopyridinium of 1 and 2 are replaced by 2-amino-6-methylpyridinium cation and lack lattice water. The different H-bonding interactions viz Nsingle bondH⋯S, Csingle bondH⋯S, Nsingle bondH⋯O and Osingle bondH⋯O are observed in 1 and 2, which are reduced to two viz. Nsingle bondH⋯S and Csingle bondH⋯S in 3 and 4. The weak interactions (Nsingle bondH⋯O and Osingle bondH⋯O) originating from lattice water further interlink cations with [MoS4]2− and [WS4]2− anions forming extended networks in 1 and 2. To understand the importance of intermolecular interactions in the structures of 1–4, the Hirshfeld surface analyses were performed. The enrichment ratio (E) in the structures of compounds 1–4 was obtained. Compounds 1–4 were tested for their sulfur transfer ability. Only compound 1 showed a predominant disulfide product formation in reaction with 1,3-dibromopropane.
Determinants of Extensive and Intensive Margins of Indian Agriculture: Gravity Model Analysis
(NASS (SCOPUS), 2024-11-29) Averyl Pires; B. P. Sarath Chandran
The paper examined the intensive and extensive margin of India’s agricultural exports and identified the determinants of the trade margins using a gravity trade model. Panel data on India’s bilateral agricultural trade with 20 major partner countries for thirty years from 1991 to 2020 is constructed under the HS-6-digit classification of 600 agricultural products for the analysis. The intensive and extensive margins of India’s agricultural exports are calculated using the Hummels and Klenow method. The determinants of extensive and intensive margins of India’s agricultural trade are identified based on the gravity model of trade framework using estimation methods of Feasible Generalised Least Squares (FGLS) and Pseudo Poisson Maximum Likelihood (PPML). The results showed that the extensive margins are more dominant than the intensive margins over the thirty year period. The gravity model revealed that variables such as relative economic magnitude, relative economic freedom, distance, relative agriculture value added, relative crop production, relative purchasing power, trade agreements, and common language significantly influence the extensive and intensive margins of India’s agricultural exports. The results imply that for sustained agricultural export growth, India should pursue policies for identifying new export destinations and deepen existing products by taking initiatives to strengthen the determinants identified in the study. Keywords: Agriculture Exports; Extensive Margin; Intensive Margin; Gravity Model
Sensor and antibacterial research of Mussaenda frondosa leaf extract assisted zinc oxide nanoparticles
(Taylor & Francis Online, 2024-09-26) Mamata C. Naik; Jyothi H. Kini; Kumara Swamy B. E.; Sheryanne Velho-Pereira
Leaf extract of Mussaenda frondosa is used to synthesise as-prepared nanostructured zinc oxide nanoparticles (ZnO NPs). The synthesised ZnO NPs were analysed using Transmission electron microscopy (TEM), Field emission scanning electron microscopy (FE-SEM), Energy dispersive X-ray spectroscopy (EDX), Ultraviolet-visible spectrophotometry (UV-VIS), X-ray diffractometry (XRD) and Fourier-transform infra-red spectroscopy (FTIR) to show its hexagonal Wurtzite structure with average crystallite size 14.03 nm. The study employed a modified ZnO NPs carbon paste electrode (ZnO NPs/CPE-MCPE) to examine the electrochemical behaviour of dopamine. These investigations demonstrated significant levels of selectivity and sensitivity for detecting dopamine (DA) in the presence of 0.2 M phosphate buffer solution (PBS) at pH 7.4. Antibacterial investigations following the agar cup diffusion studies revealed efficacy against the test pathogens namely S. aureus (Gram-positive) and Klebsiella sp. (Gram-negative).
Impact of HRM Practices on Employees Performance on SDG in Pharmaceutical Companies
(Journal of Lifestyle and SGDs Review, 2024-01-01) Srimati Naik; Filipe Rodrigues e Melo
The main aim of the study is to examine the impact of HRM practices on employee performance in Pharmaceutical companies in Goa. In addition to this, the study also focuses on Human Resource Management Practices and Firms’ Performance in Pharmaceutical Industry. Additionally, it focuses on HRM Practices and it’s Impact on Employee Satisfaction in the pharmaceutical industry. Lastly, the study examines the effect of Human Resource Management Practices on Job Satisfaction.