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Detection of explosive picric acid via ESIPT-inhibited fluorescent chemosensor: theoretical insights, vapour phase detection and flexible indicator design
A fluorescent probe, (E)-2-((benzo[d]thiazol-2-ylimino)methyl)-5-(diethylamino)phenol (BMP), was designed and synthesized using 4-(diethylamino)-2-hydroxybenzaldehyde and benzothiazole-2-amine, and subsequently characterized for its selective turn-off response toward picric acid (PA). Upon the gradual addition of PA, significant changes in the absorption and fluorescence spectra were observed, marked by strong fluorescence quenching even in the presence of competing nitroaromatic compounds. BMP exhibited two absorption signals at 350 nm and 433 nm with a prominent emission band at 488 nm, attributed to excited-state intramolecular proton transfer (ESIPT), accompanied by a large Stokes shift of 138 nm. The interaction between PA and the hydroxyl group of BMP effectively suppressed the ESIPT process, leading to the observed spectral variations. The binding interactions were further confirmed through NMR spectroscopy and density functional theory (DFT) calculations. The ligand BMP has been utilized as a selective chemosensor for PA with a 2-fold reduction in fluorescence intensity and 19-fold increment in absorption intensity, showing a binding affinity of 2 104 M?1 and strong quenching efficiency toward picric acid, with a SternVolmer constant (Ksv) of 14.059 M?1 with a limit of detection (LOD) of 4.87 ?M. For practical implementation, BMP was successfully employed in a dipstick-based detection format for vapor-phase sensing. Moreover, BMP-embedded polymer films demonstrated excellent potential as solid-state fluorescent sensors, exhibiting visible fluorescence quenching upon exposure to PA. Their rapid, time-dependent emission response under UV light allows for convenient, on-site detection using devices such as smartphones, making them highly promising for real-world applications in explosives detection and environmental monitoring. This journal is The Royal Society of Chemistry, 2025 -
The impact of India's formal and informal (street vending) sectors, as well as their issues, challenges, and opportunities /
Patent Number: 202141048337, Applicant: Arumugam Ranjith.
People in countries such as Cambodia and India are increasingly reliant on road vending as a major source of income in urban areas, sparking new areas of social science research. We compiled data on the products sold by street vendors in markets in Delhi and Cambodia, revealing the nuanced interplay between what is categorized as informal and what is categorized as formal in urban economies, as evidenced by our findings. -
The impact of India's formal and informal (street vending) sectors, as well as their issues, challenges, and opportunities /
Patent Number: 202141048337, Applicant: Arumugam Ranjith.
People in countries such as Cambodia and India are increasingly reliant on road vending as a major source of income in urban areas, sparking new areas of social science research. We compiled data on the products sold by street vendors in markets in Delhi and Cambodia, revealing the nuanced interplay between what is categorized as informal and what is categorized as formal in urban economies, as evidenced by our findings. -
Best HR practices in an organized retail sector /
Patent Number: 202111056332, Applicant: Dr. S. Pramila.
The achievement of an organization's goals is impossible without effective human resource management. The research focuses on the human resource practices of retail organisations, which have an impact on both employee and organizational performance. The primary goal of this paper is to investigate the human resource management practices used in India's organised retail sector. A questionnaire is used to collect the most important data. -
Floating rafters for wetland treatment /
Patent Number: 351985-001. Applicant: S. Shrimathy. -
The role of block chain technology in banking and financial markets /
Patent Number: 202241037972, Appliccant: Dr. Shariq Mohammed.
The role of block chain technology in banking and financial markets Abstract Blockchain technology may be used to send our information more securely. This means that our information is interconnected like a chain of blocks. The main reason for the creation of this blockchain is information security. Yes, in the current age of the Internet, it is a question of whether one's data is protected. This blockchain technology is designed to send data and crypto currency securely and directly without intermediaries. -
Impact of pharmacy industries growth on India economy during covid 19 /
Patent Number: 202241050891, Applicant: Deepha V.
Impact of Pharmacy Industries growth on India Economy during COVID 19 Abstract Pharmacy is an industry that can continue to function without being affected by economic fluctuations. This industry is socially respected by people. Whether people have food to eat or not, everyone wants to preserve the health of the body. In particular, the demand for medicines is more than ever in today's era. -
Smart system for effective wate management /
Patent Number: 202041049785, Applicant: Meenakshi.
500-700 years it takes for a Plastic waste to get degraded in the soil. In India this type of wastes sits as a Landfill and there by spoiling the fertility of the soil and even increasing the toxicity of the Ground water, by the way the dumped waste is always either unprocessed or untreated which has catastrophic problems in future. More over the growth of population is drastically changing thereby increase in waste production in the Country. -
Interpersonal skills score card for students using artificial intelligence and methods thereof /
Patent Number: 202041045225, Applicant: Dr. Usha B A.
The invention discloses a mentoring system capable of improving student™s interpersonal skills in the field of Learning for the betterment of the life of an individual. The feedback system has the capability of generating feedback with better accuracy and hence easily identifying the areas of weaknesses and strengths of the students with respect to leadership interpersonal skills The feedback system has the capability of understanding students from perspectives of all the stakeholders involved, thereby generating a rating with areas of improvement, the system also has the capability of addressing the weaker areas by following a PDCA Cycle. -
Novel system for mental health state analysis using machine learning and methods thereof /
Patent Number: 202041044754, Applicant: Prof.Santosh Kumar J.
Systems and methods are provided to understand mental health state of an individual by audio sensors, video sensors and log data of mobile devices. To get more accurate and reliable data machine learning module is also integrated with three input forms of data provided to the system. Once any abnormality is observed, it is reported to the caretakers with a coping strategy to solve the illness at initial stages. -
Big data performance enhancement using machine learning spark-ML pipeline auto parameter tuning /
Patent Number: 202041057025, Applicant: Santosh Kumar J.
The Big data is not only complex, huge data also variety of data which is very difficult to analyze and process efficiently using traditional systems. To analyze and process big data efficiently, we have recently many frameworks like Hadoop, Spark, flink. Some of the languages to process big data are java, Scala, Pig, NoSQL, mango DB Hive Habse. -
Effectiveness of family centered psychosocial intervention programme for primary caregivers of the children with cerebral palsy
Cerebral palsy is one of the multiple disabilities affecting 2 to 2.5 per thousand new born babies in India. It usually affects both individual and families. Though care giving is a normal part of being the parent of a child, caring a child with special needs takes on an entirely different life perspective when a child with disabilities, and especially one with multiple disabilities like cerebral palsy which have an effect on long- term dependence. -
Study of three-dimensional mapping of interstellar extinction in milky way galaxy
It is very difficult to model the three-dimensional distribution of interstellar matter (ISM) in our Galaxy because of the general lack of distance information. One of the few ways to probe the distance of the interstellar gas and dust is through absorption line measurements (in the case of gas) or through extinction (in the case of the dust), but these have been limited to a relatively small number of directions. -
From Oklahoma to the hateful eight: Rise and fall of 70mm film format /
There is a constant debate in the industry whether it should stick to the latest trends in digital technology or slowly bring back the film formats that are going obsolete, purely due to the uncanny myths that surround it. Film formats are being promoted by well-known auteurs, addressing the common misconceptions such as cost, look and quality of the recordings made. -
Content analysis on coverage of wildlife issues by popular english and kannada newspaper of Bengaluru /
The ever increasing human population and unplanned developmental work across the globe has caused a major threat to the biodiversity. Poaching, loss of wild habitat due to encroachment of forestlands have put many animal and plantspecies in the verge of extinction, the most recent being the Western black rhinoceros, a subspecies of the black rhinoceros that was declared as extinct by the International Union for Conservation of Nature and Natural Resources (IUCN) in the year 2011.The current destruction of the remaining wild habitats across the globe seeks protection and effective conservation strategies. Print Media, especially newspaper play an important role in creating awareness about wildlife issues and also mitigating in problems. -
Digital micromirror device characterization in optical band for astronomical multi-object spectrograph
The Digital Micromirror Device (DMD), a micro-electro-mechanical system (MEMS) consisting of individually controllable micromirrors, has emerged as a versatile tool for astronomical instrumentation, particularly in multi-object spectroscopy (MOS). Unlike traditional slit masks or fiber-based systems, DMDs offer dynamic reconfigurability, enabling efficient light modulation and enhanced spectral acquisition. Their adaptability has led to widespread adoption in ground-based spectrographs (e.g., RITMOS, BATMAN, SAMOS, IRMOS) and feasibility studies for space missions (e.g., EUCLID, CASTOR, SUMO, SIRMOS). DMDs have demonstrated robustness in space qualification tests, including radiation exposure, thermal cycling, and mechanical stress, making them viable for space-based applications. Recent advancements, such as UV-transparent windows and enhanced coatings, further expand their potential for ultraviolet astronomy. In India, the success of AstroSats Ultra Violet Imaging Telescope (UVIT) has motivated the development of the next-generation INdian Spectroscopic and Imaging Space Telescope (INSIST), which includes a DMD-based MOS for UV/optical observations. To advance its Technology Readiness Level (TRL), we evaluated the Texas Instruments DLP9500 DMD (1920 1080 micromirrors, 10 m pitch) in the optical band, assessing key parameters such as diffraction efficiency, reflectivity, contrast, micromirror repeatability, and Point Spread Function (PSF) alignment. This study establishes a foundation for future UV-optimized DMD applications in INSIST and other astronomical missions. The Author(s), under exclusive licence to Springer Nature B.V. 2025. -
ABL as a linguistic pedagogy-An experimental study of acquisition of English language among primary school children
The history of English language teaching has been regarded as a pursuit for more effective ways of teaching and learning. The teaching profession has held constant discussions and debates over issues like framing effective learning strategies,techniques for teaching the four skills to the students, choice of curriculum frameworks, materials available for effective English language teaching, role of grammar and vocabulary in English classrooms, teaching English language using technology, improvement of fluency and accuracy during the process of language learning and so on. English language experts are constantly engaged in clarifying these areas including the search for an appropriate approach of teaching English language effectively in classrooms. -
Cloud and IOT based alcohol and health monitoring system /
Patent Number: 202141022529, Applicant: Dr.AR.Sivakumaran.
Wireless alcohol and health monitoring system that can monitor a human 24x7. Vehicle driving to manufacturing plants, Offices, Hospitals, Military, and other such ventures need to screen their staff/faculty follow all hard-working attitudes that incorporate, not coming to premises affected by liquor. This guarantees legitimate hard-working attitudes are followed. Our proposed framework takes into consideration liquor and wellbeing checking in addition to a detailing framework that screens this and reports it to concerned staff distantly over the web. -
A study of customers expectation towards depository participants of Bangalore city /
The exponential growth of the capital market witnessed in recent years had resulted in a near complete breakdown of the paper based transaction system. The amount of capital raised has shot up, the number of issues had increased substantially, trading volumes on the stock exchanges had grown several fold and the markets had become institutionalised with the entry of Foreign Institutional Investors (FIIs) and private mutual funds. As a result, there had been an increase in paper work causing a gridlock at every stage. This delays the clearance and settlement of trades, registration of securities and increases back office paper work for intermediaries. The outdated systems had increased settlement risks and have rendered the implementation of a Delivery versus Payment (DP) system impossible. The systemic risks face further threat by theft, forgery, bad delivery, issue of fake share certificates and loss of certificates. This had eroded investor confidence.