Latest news with #IIT-Guwahati


New Indian Express
6 days ago
- Science
- New Indian Express
ISRO shares new findings on black hole
BENGALURU: A team of scientists and researchers from the Indian Space Research Organisation (ISRO) on Friday listed out their unique findings while studying the Black Hole as part of their noted that the X-ray brightness from the fascinating and mysterious black hole, GRS 1915+105, fluctuates dramatically over time. It exhibits a unique pattern of alternating low-brightness ('dips') and high-brightness ('non-dips') phases, each lasting a few hundred seconds. During the high-brightness phase, the team discovered that the rapid flickers in X-rays were repeating about 70 times per second, known as Quasi-periodic Oscillations (QPOs). Interestingly, such 'fast' flickers vanish during the low-brightness phase, noted the researchers Anju Nandi from ISRO, Santabrata Das from IIT- Guwahati, Sreehari H from Hafiza University and Seshadri Majumder from IIT Guwahati. India's first dedicated multi-wavelength space observatory, AstroSat, has been continuously monitoring the black hole GRS 1915+105 since its launch in September 2015 and is working to provide insights into the source's behaviour. The research team stated that they found that these rapid QPOs are intimately connected to a super-heated cloud of energetic plasma surrounding the black hole, known as the corona. During the bright, high-energy phases when QPOs are strongest, the corona becomes more compact and significantly hotter with higher luminosity. Conversely, in the dimmer dip phases, the corona expands and cools, causing the flickers to vanish. This pattern suggests that the compact oscillating corona seems to be the origin of these fast QPO signals. This research work titled- Evidence of oscillating 'compact' Comptonised corona in GRS 1915+105: insights into HFQPOs with AstroSat- was also published in the journal Monthly Notices of the Royal Astronomical Society, on July 4, 2025. ISRO shared the details on July 25. The research team noted that these findings will help scientists understand what happens in the vicinity of a black hole, where gravity is incredibly strong and conditions are extreme.


Time of India
6 days ago
- General
- Time of India
NFR to turn Guwahati rly stn into fully plastic-recyclable hub
Guwahati: The Northeast Frontier Railway (NFR) is set to transform Guwahati railway station into a fully plastic-recyclable hub by Independence Day. This initiative aims to combat plastic pollution across its network. Tired of too many ads? go ad free now NFR is collaborating with IIT-Guwahati and the Assam Pollution Control Board to devise an action plan. M/s Kusum Udyog, a PCBA-approved recycling agency, was tasked with submitting a comprehensive proposal for the project, NFR chief public relations officer Kapinjal Kishore Sharma said. He added that the railway department is working in tandem with the Indian Institute of Technology (IIT)-Guwahati and the Assam Pollution Control Board (PCBA), where they are devising an action plan for this initiative. "The agenda also included reviewing current waste disposal practices, identifying high-impact areas, and formulating a joint action plan to minimise single-use plastic and enhance sustainable practices. Furthermore, the Scouts and Guides of NFR organised public awareness activities such as placard displays and drama performances to raise awareness among the passengers as well," Sharma said. Under this project, the plastic waste generated at the station will be collected, shredded, washed, and properly segregated before being recycled. The aim is to make the station the first plastic-free railway station in India through this waste management and recycling effort, following which it will be carried out in other railway stations under the NFR's jurisdiction. "On an average, the station generates around 150 to 200 kilograms of waste daily, which is initially dumped at a site near the railway station and later transported to the landfill by the Guwahati Municipal Corporation (GMC). Tired of too many ads? go ad free now However, with proper awareness and waste segregation, the generated waste can be effectively recycled," Sharma said. He added, "This would allow for better utilisation of Effluent Treatment Plants (ETPs) and Sewage Treatment Plants (STPs), which can then process the organic wet waste into compost, ultimately repurposing it as natural fertiliser. Once this becomes a success in this station, we will carry out similar operations in our other railway stations as well, and five stations under NFR have already been selected."


New Indian Express
6 days ago
- Science
- New Indian Express
ISRO scientists share new findings while studying Black Hole GRS 1915+105
BENGALURU: A team of scientists and researchers from the Indian Space Research Organisation (ISRO) on Friday listed out their unique findings while studying the Black Hole as part of their study. They noted that the X-ray brightness from fascinating and mysterious black hole- GRS 1915+105- fluctuates dramatically over time. It exhibits a unique pattern of alternating low-brightness ('dips') and high-brightness ('non-dips') phases, each lasting a few hundred seconds. During the high-brightness phase, the team discovered that the rapid flickers in X-rays were repeating about 70 times per second (frequency 〖ν〗_(QPO) ∼70 Hz), known as Quasi-periodic Oscillations (QPOs). Interestingly, such 'fast' flickers vanish during the low-brightness phase, noted the researchers Anju Nandi from ISRO, Santabrata Das from IIT- Guwahati, Sreehari H from Hafiza University and Seshadri Majumder from IIT Guwahati. India's first dedicated multi-wavelength space observatory, AstroSat, has been continuously monitoring the black hole GRS 1915+105 since its launch in September 2015 and is working to provide insights into source's behaviour. Explaining what causes the mysterious fast flickers, the research team in the report stated that they found that these rapid QPOs are intimately connected to a super-heated cloud of energetic plasma surrounding the black hole, known as corona. During the bright high-energy phases when QPOs are strongest, the corona becomes more compact and significantly hotter with higher luminosity. Conversely, in the dimmer dip phases, the corona expands and cools, causing the flickers to vanish. This pattern suggests that the compact oscillating corona seems to be the origin of these fast QPO signals.


India.com
12-07-2025
- Business
- India.com
Meet Man Who Left Goldman Sachs To Become Security Guard, Later Joined An IAF Pilot to Build Rs 16,70,00,00,000 Company — Know Who He Is...
photoDetails english 2930652 MyGate Success Story: Industrialist Harsh Goenka recently shared the amazing story of Abhishek Kumar, an IIT Kanpur graduate who gave up a high-paying job to become a security guard. But this was no ordinary job switch. Abhishek worked 14-hour shifts in uniform to deeply understand how security works in Indian gated communities. People thought he was just another guard. No one knew he was actually building something big—MyGate. Today, MyGate is used by over 4 million people in 25,000 housing societies. It handles more than 100 million check-ins every month and has helped 1.2 million security guards switch to digital tools. Abhishek didn't do this alone. He teamed up with Vijay Arisetty, a former pilot and war veteran, and Shreyansh Daga, a tech expert from IIT-Guwahati and ISB. With their combined knowledge from top Indian institutions, the trio turned a simple idea into one of India's leading community apps. From guarding gates to guarding homes with smart tech—MyGate has changed the way India lives. Updated:Jul 12, 2025, 12:37 PM IST From Goldman Sachs To Guard Duty 1 / 8 Abhishek Kumar, an IIT Kanpur alumnus and former Goldman Sachs executive, took up 14-hour shifts as a security guard. His goal wasn't employment—it was deep, firsthand research into the problems faced by security staff at gated communities. Abhishek Kumar- A Actual Security Guard 2 / 8 Residents believed Abhishek Kumar was an actual guard. His research was so immersive that no one suspected he was on a mission to disrupt the security ecosystem and later lead India's top gated community management app—MyGate. Founding Of MyGate In 2016 3 / 8 In 2016, Abhishek Kumar teamed up with Vijay Arisetty, a former Indian Air Force (IAF) pilot who received the Shaurya Chakra for saving hundreds of lives in Andaman & Nicobar Islands in the 2004 tsunami, and Shreyansh Daga to launch MyGate—a platform designed to manage visitor entry, maintenance, housekeeping, and security services in Indian housing societies using smart, digital solutions. MyGate: Reaching Millions of Homes 4 / 8 Today, MyGate is trusted by over 4 million residents across 25,000 housing communities. The platform handles more than 100 million digital check-ins each month, ensuring streamlined and secure access for visitors and service providers. MyGate: Rs 100 Crore Funding Boost 5 / 8 In 2022, MyGate secured ₹100 crore in a funding round led by Urban Company and Acko. The funding supported the platform's growth, innovation, and expansion into new areas like home automation and smart security. MyGate: Launch of Smart Locks in 2023 6 / 8 In September 2023, MyGate stepped into the smart home segment with 'MyGate Locks'—a range of smart door locks aimed at enhancing digital security for Indian households, further expanding the company's product portfolio and impact. Strong Financial Turnaround 7 / 8 MyGate's revenue jumped from ₹77 crore in FY23 to ₹109 crore in FY24. Impressively, its net losses also reduced drastically from ₹227 crore to just ₹39.7 crore, showing improved operational efficiency and growth. Abhishek kumar's MygGate Valuation Milestone 8 / 8 The three co-founders—Kumar, Arisetty, and Daga—now hold a combined 24.83% stake in MyGate. The company is currently valued at Rs 1,670 crore (around $200 million), according to startup data platform Tracxn.


The Print
25-05-2025
- Science
- The Print
IIT-Guwahati develops sustainable solution using mushroom waste for wastewater treatment
The findings of this research have been published in the prestigious Journal of Environmental Management. The technology — BHEEMA (Biochar-based Hydrological Enzyme regulated Efficient Mechanism for Antibiotics removal) employs laccase-mediated degradation to remove antibiotics from wastewater, preventing the formation of toxic byproducts commonly associated with conventional treatment methods. New Delhi, May 25 (PTI) Researchers at IIT-Guwahati have developed an eco-friendly alternative to conventional wastewater treatment methods by combining biochar derived from Spent Mushroom Waste and laccase, a natural enzyme, according to officials. The developed system has been recognised as the top seventh finalist under the Water Sanitation theme of the Vishwakarma Awards 2024, organised by the Maker Bhavan Foundation. According to Sudip Mitra, the Head of the School of Agro and Rural Technology at IIT Guwahati, the research team targeted the removal of harmful fluoroquinolone group of antibiotics, including Ciprofloxacin, Levofloxacin, and Norfloxacin, generally found in hospital discharge, industrial effluents and surface water. 'Contrary to traditional wastewater treatment methods such as advanced oxidation and membrane reactors, which are both costly and generate secondary pollutants, our approach uses laccase, a naturally occurring enzyme, to degrade the contaminants. 'To make the enzyme stable for reusability, our research group immobilised it on biochar derived from spent mushroom waste, an easily available agro-waste product in this region,' Mitra told PTI. The developed biochar is a cost-effective, scalable, and sustainable alternative to activated charcoal. On a lab scale, within three hours of application, the developed system achieved 90–95 per cent degradation efficiency of the fluoroquinolone antibiotics. 'Another key feature of the developed system is that the byproducts recorded in the degradation process are non-toxic, making the technology sustainable and safe for the environment,' said Anamika Ghose, a PhD scholar. The prototype has been developed in collaboration with Latha Rangan, a professor at the Department of Biosciences and Bioengineering, IIT-Guwahati, along with her research scholars. At a laboratory scale, the developed prototype costs between Rs 4,000–5,000, covering materials, enzyme immobilization, and reactor setup, making it a feasible option for scaling up and adoption in both urban and rural settings. In the next step, the research team is working towards scaling up the developed prototype by engaging with stakeholders for field testing and market validation. The research team recently organized a hands-on training session for farmers on Biochar preparation and its multiple benefits for agriculture. Conducted in collaboration with the District Agricultural Office of Morigaon at their office premise, a total of 30 local farmers attended the training session. PTI GJS GJS NSD NSD This report is auto-generated from PTI news service. ThePrint holds no responsibility for its content.