Tender invited for 6 air quality monitoring stns
New Delhi: Delhi Pollution Control Committee has invited e-tender for supply, installation and commissioning of six new continuous ambient air quality monitoring stations (CAAQMS).
These stations are likely to become operational in Aug, taking the total number of such stations in the city to 46.
Delhi environment minister Manjinder Singh Sirsa said, "These stations will be installed in Aug and data will be generated immediately after installation." He added that DPCC will identify and hand over the site on time for commissioning of CAAQMS. The six stations will be installed on the campuses of JNU, IGNOU, ISRO, Commonwealth Sports Complex, Delhi Cantonment and Netaji Subash University of Technology. TNN
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Time of India
2 hours ago
- Time of India
AI 171 crash: Advanced DNA profiling helped piece together familial links
Ahmedabad: Four of the 241 victims aboard the ill-fated AI 171 flight were a man, his wife, son and daughter. The forensic experts first relied on the man's paternal uncle to get a sample for the Y-STR (short tandem repeat) test. The relationship, however, did not prove helpful in establishing an identity beyond doubt. So, the experts again reached out to the family to request a sample of the deceased man's mother and performed the X-STR test. "The strategy worked. Through careful kinship analysis using advanced DNA profiling, the team successfully established the man's identity, which proved to be key in identifying three other members of the family," said H P Sanghvi, director of the Directorate of Forensic Sciences (DFS). The identity of the last unidentified passenger aboard AI 171 was also confirmed on Friday. A team of 40 forensic scientists from the DFS and the National Forensic Sciences University (NFSU) worked tirelessly to establish the identities of 254 of 260 crash victims based on DNA matches, a mammoth task that posed unique challenges. You Can Also Check: Ahmedabad AQI | Weather in Ahmedabad | Bank Holidays in Ahmedabad | Public Holidays in Ahmedabad Dr Malay Shukla, coordinator at Centre of Excellence (CoE) in DNA Forensics, said that one of the cases involved three members of a family — a man, his wife and daughter. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Jesus' Tomb Is Opened And Scientists Find Something Unbelievable Novelodge Undo "In this case, we got the reference DNA from the couple's other daughter. Autosomal (non-sex chromosome) markers were used to narrow down the connection between the victims and the donor. To verify that all four were related to each other, X-STRs were used. With the use of both X-STR and autosomal STR, we could establish the identities," said Prof Shukla. Dr Bhargav Patel, head of the CoE in DNA Forensics at NFSU, said that they have matched the DNA samples of the victims with nephews, cousins, grandparents and maternal or paternal uncles. "In conventional matches, we generally rely on either X-STR, Y-STR or autosomal STR test to establish identities. But in the cases associated with the crash, more than one test was employed in several cases. In some of the cases, even mitochondrial DNA matches were used. While nuclear DNA (with X and Y chromosomes) is inherited from both parents, mitochondrial DNA (mtDNA) is inherited maternally," he said. The X-STR markers are inherited from mother to daughter and son, and from father to daughter, but not from father to son. Likewise, mtDNA is inherited maternally and can be matched with the maternal line. In one of the better-known cases from the airplane crash, the identification of former Gujarat CM Vijay Rupani was carried out using the Y-STR from his nephew on the patrilineal branch. Earlier, his sister and son had provided the samples for the match. Experts said that ensure the quality of DNA samples, they relied primarily on teeth. Their second choice was bones such as the mandible (jaw) and clavicle (collarbone) that sustained severe temperatures. Several of the samples were in highly deteriorated condition, the team managed to match all samples, according to the experts.
The Hindu
5 hours ago
- The Hindu
First-ever artificial rain in Delhi likely from July 4 to 11: Environment Minister
The national capital is all set for its first date with artificial rain as a trial of the cloud seeding process has been scheduled between July 4 and 11, Delhi Environment Minister Manjinder Singh Sirsa announced on Saturday. 'The initiative marks a historic step in controlling urban air pollution. Our aim is to provide Delhiites with clean air. That's why we're taking this bold step of inducing artificial rain. We are hopeful that it will bring about a meaningful change,' Mr. Sirsa told mediapersons. He added that the Indian Institute of Technology, Kanpur, had submitted the plan for a cloud seeding trial to the India Meteorological Department for technical coordination. The premier engineering institute has been tasked with implementing the project by overseeing aircraft deployment, chemical dispersal, scientific modelling, planning, and operational logistics. The Minister said that weather conditions for the project were found to be unsuitable until July 3, but a window has been identified between July 4 and 11. The government has sent a proposal to the Directorate General of Civil Aviation (DGCA), requesting an alternative window in case the weather remains unfavourable during the scheduled period so that the trial could be conducted at a later date. Last year, then Delhi Environment Minister Gopal Rai (Aam Aadmi Party) wrote multiple letters to Union Environment Minister Bhupender Yadav, urging him to fast-track clearances for cloud seeding as an emergency measure to control air pollution. He had claimed that Mr. Yadav did not respond to the letters. War of words AAP's Delhi unit chief Saurabh Bharadwaj questioned the idea behind conducting cloud seeding trials during the monsoon. 'The weather department had been saying that it might rain anytime. Suddenly, the Delhi government under [Chief Minister] Rekha Gupta makes the announcement about artificial rain. What exactly are you trying to prove by conducting artificial rain during the rainy season?' he said. The former Health Minister said the trials should have been scheduled for October-November, during which air pollution usually spikes in the city. Mr. Bharadwaj added, 'Is the announcement about helping people, is it about helping someone financially, or has it been done for cheap publicity?' In response, Mr. Sirsa said, 'We were the ones who signed the MoU first, made the payments to IIT, Kanpur, and applied for the necessary approvals because we want to bring about actual change.' 'AAP didn't do anything except talk about inducing artificial rain. Our government, on the other hand, has worked sincerely. That's why, within just four months of forming the government, we are at the stage of finalising the date for Delhi's first artificial rain,' said the Minister. How it works Under the project titled 'Technology Demonstration and Evaluation of Cloud Seeding as an Alternative for Delhi NCR Pollution Mitigation', through which the Delhi government is looking to combat air pollution and address water scarcity, five aircraft sorties will be made over north-west and outer Delhi. A total of ₹3.21 crore has been earmarked for these trials. Each sortie, lasting approximately 90 minutes, will cover around 100 square kilometres, dispersing a seeding mixture using flare-based systems on modified Cessna aircraft. The mixture, developed by the IIT, includes silver iodide nanoparticles, iodised salt, and rock salt, designed to catalyse artificial rain by accelerating droplet formation in moisture-rich clouds. Much like seeds sprayed on fertile soil, the salts are expected to interact with water droplets in the clouds, make them bigger and heavier so that they will eventually condense as rain.
Time of India
6 hours ago
- Time of India
Advanced DNA profiling helped piece together familial links
Ahmedabad: Four of the 241 victims aboard the ill-fated AI 171 flight were a man, his wife, son and daughter. The forensic experts first relied on the man's paternal uncle to get a sample for the Y-STR (short tandem repeat) test. The relationship, however, did not prove helpful in establishing an identity beyond doubt. So, the experts again reached out to the family to request a sample of the deceased man's mother and performed the X-STR test. "The strategy worked. Through careful kinship analysis using advanced DNA profiling, the team successfully established the man's identity, which proved to be key in identifying three other members of the family," said H P Sanghvi, director of the Directorate of Forensic Sciences (DFS). The identity of the last unidentified passenger aboard AI 171 was also confirmed on Friday. A team of 40 forensic scientists from the DFS and the National Forensic Sciences University (NFSU) worked tirelessly to establish the identities of 254 of 260 crash victims based on DNA matches, a mammoth task that posed unique challenges. You Can Also Check: Ahmedabad AQI | Weather in Ahmedabad | Bank Holidays in Ahmedabad | Public Holidays in Ahmedabad Dr Malay Shukla, coordinator at Centre of Excellence (CoE) in DNA Forensics, said that one of the cases involved three members of a family — a man, his wife and daughter. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like Giao dịch xu hướng AUD/USD? IC Markets Đăng ký Undo "In this case, we got the reference DNA from the couple's other daughter. Autosomal (non-sex chromosome) markers were used to narrow down the connection between the victims and the donor. To verify that all four were related to each other, X-STRs were used. With the use of both X-STR and autosomal STR, we could establish the identities," said Prof Shukla. Dr Bhargav Patel, head of the CoE in DNA Forensics at NFSU, said that they have matched the DNA samples of the victims with nephews, cousins, grandparents and maternal or paternal uncles. "In conventional matches, we generally rely on either X-STR, Y-STR or autosomal STR test to establish identities. But in the cases associated with the crash, more than one test was employed in several cases. In some of the cases, even mitochondrial DNA matches were used. While nuclear DNA (with X and Y chromosomes) is inherited from both parents, mitochondrial DNA (mtDNA) is inherited maternally," he said. The X-STR markers are inherited from mother to daughter and son, and from father to daughter, but not from father to son. Likewise, mtDNA is inherited maternally and can be matched with the maternal line. In one of the better-known cases from the airplane crash, the identification of former Gujarat CM Vijay Rupani was carried out using the Y-STR from his nephew on the patrilineal branch. Earlier, his sister and son had provided the samples for the match. Experts said that ensure the quality of DNA samples, they relied primarily on teeth. Their second choice was bones such as the mandible (jaw) and clavicle (collarbone) that sustained severe temperatures. Several of the samples were in highly deteriorated condition, the team managed to match all samples, according to the experts.
