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Nanotech can make biopesticides more effective

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Nanotech can make biopesticides more effective

[vc_row][vc_column][vc_column_text]By Sunderarajan Padmanabhan

The use of eco-friendly biocontrol agents as an alternative to chemical pesticides is prevalent in some farming communities. A group of scientists have now shown that it is possible to substantially enhance efficacy of such biocontrol agents by converting them into nanoparticles.

Researchers at the University of Agricultural Sciences at Raichur in Karnataka have developed a new technique to do so. They have converted secretion of a bacterium, Photorhabdusluminescens, into nanoparticles and found that its efficacy improved significantly. The bacterium is used as a biocontrol agent against a wide range of crop pests like mite, aphid, and mealy bug. The nano form of biocontrol agent has been tested against two sucking pests of cotton — Tetranychusmacfarlanei, a species of mite and Aphis gossypii, a species of aphid.

Nanotech can make biopesticides more effective

The fight is on: A mite killed by the new nano-particulated solution.

Reporting their findings in a recent issue of scientific journal Current Science, the researchers noted, “High mortality coupled with quick action emphasises the potential of nanotechnology in enhancing the pathogenicity of a microbial pesticide.” It was found that very low concentration of nano-particulated secretion could kill pests as against unprocessed secretion. This means farmers would be required to use very small quantities of biopesticide in its nano form.

Cellular secretions of the bacterium Photorhabdusluminescens have been used as pesticide against a wide range of insects. The bacterium lives within the body of a nematode called Heterorhabditis in a symbiotic relationship with the nematode. It secretes an array of toxins and enzymes.The secretions have a wide range of insecticidal actions against both sucking and chewing anthropod pests of agricultural crops. Farmers spray solutions of the bacteria on crops but it is not as efficacious as synthetic chemicals.

Scientists converted bacterial secretions into nanoparticles using a multi-stage process involving culturing, centrifuge, ultrasonic assisted atomizing and hot air-assisted vacuum process. The resultant product is dry powder.

“We have proved that it is possible to substantially enhance the efficacy of biopesticides. We need to conduct more studies to figure what is the best form in which it could be delivered to the users: whether it should be as a powder or a solution or in some other form,” said A Prabhuraj, one of the scientists involved in the study.

The research team included Ramesh A Kulkarni, J Ashoka and SG Hanchinal of the Department of Agricultural Entomology and SharanagoudaHiregoudar of the Department of Processing and Food Technology at the Raichur University. (India Science Wire)[/vc_column_text][/vc_column][/vc_row]

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ChatGPT outage affects thousands of users globally, OpenAI reacts

OpenAI swiftly acknowledged the outage, publishing updates on their dedicated status page. This transparency, while offering little in the way of immediate solutions, served to reassure users that the company was actively addressing the situation.

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On January 23, OpenAI’s popular AI chatbot, ChatGPT, suffered a significant global outage, leaving millions of users unable to access the service. The disruption affected multiple access points, including the web interface, the mobile application, and even integrations on social media platforms like X (formerly Twitter). This widespread failure quickly drew significant attention, with reports flooding in from users worldwide.

The outage tracking website, Downdetector, registered a surge in user reports, exceeding a thousand complaints within a short period. This volume underscored the scale of the disruption and the significant impact on ChatGPT’s user base.

The majority of these reports indicated a complete inability to use the chatbot, highlighting the severity of the problem. A smaller percentage of users reported encountering difficulties with the website or API, suggesting a less comprehensive but still noticeable impact.

OpenAI swiftly acknowledged the outage, publishing updates on their dedicated status page. This transparency, while offering little in the way of immediate solutions, served to reassure users that the company was actively addressing the situation.

The official statements consistently described the problem as “degraded performance” and “elevated error rates” within the API, hinting at underlying technical issues that required investigation. However, specific details regarding the root cause remained undisclosed, pending a more thorough examination.

According to reports, the outage commenced around 5 PM IST and persisted for several hours. The lack of a definitive timeline and the ongoing nature of the disruption underlined the complexity of the problem and the challenges faced by OpenAI’s engineering teams in resolving the issue.

As of the latest updates, the exact cause of the outage remains under investigation by OpenAI. The company is actively working to restore full functionality and provide a more comprehensive explanation once the underlying problem has been identified and rectified.

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Prince Harry, Rupert Murdoch’s UK group reach settlement in surveillance case

The relentless media attention, he has claimed, also contributed to the intense pressure that led him and his wife, Meghan Markle, to step back from royal duties and relocate to the United States in 2020.

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Prince Harry has reached a settlement with Rupert Murdoch’s News Group Newspapers (NGN), bringing an abrupt end to a high-profile lawsuit alleging widespread phone hacking and unlawful surveillance.

The settlement, announced just as the trial was about to commence, includes substantial financial compensation for the Duke of Sussex and a formal, unequivocal apology from NGN. This marks a significant victory for Harry, who had accused the media giant of years of intrusive and illegal activities targeting his private life.

The apology, issued directly to Harry’s legal team, explicitly acknowledged the serious breach of privacy inflicted by both The Sun and the defunct News of the World. It detailed unlawful actions perpetrated between 1996 and 2011, including phone hacking, surveillance, and the use of private investigators to obtain sensitive information.

The statement specifically addressed the intrusive activities carried out by private investigators employed by The Sun, emphasizing the severity of the intrusion into Harry’s private life during his formative years. The apology extended to the distress caused to his late mother, Princess Diana, highlighting the impact of the media’s actions on the young prince.

This settlement represents one of three lawsuits filed by Harry against British media outlets, all stemming from accusations of privacy violations. He has consistently blamed the media for the relentless pursuit of his mother, Princess Diana, ultimately leading to her tragic death in a car crash in Paris while being chased by paparazzi.

The relentless media attention, he has claimed, also contributed to the intense pressure that led him and his wife, Meghan Markle, to step back from royal duties and relocate to the United States in 2020.

The case underscores the wider issue of phone hacking and media intrusion, exemplified by the notorious scandal that forced the closure of News of the World in 2011. The hacking of murdered schoolgirl Milly Dowler’s phone, during the police investigation into her disappearance, remains a particularly egregious example of the unethical practices employed by some sections of the British press.

Harry’s legal battle has brought renewed focus to this issue and the need for greater accountability within the media industry. The settlement, while ending this particular legal chapter, leaves a lasting legacy concerning media responsibility and the rights of public figures to privacy.

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China reacts to Donald Trump’s 10% tariff remarks, says it would protect its national interest

While acknowledging a willingness to maintain open communication channels and collaborative efforts with the U.S., China firmly rejected the notion of a trade war, emphasizing that such conflicts ultimately yield no winners.

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China has issued a firm response to US President Donald Trump’s renewed threat to impose a 10% tariff on Chinese imports, beginning February 1. The statement, released by the Chinese foreign ministry, underscores Beijing’s unwavering commitment to safeguarding its national interests amidst escalating trade tensions with the United States.

While acknowledging a willingness to maintain open communication channels and collaborative efforts with the U.S., China firmly rejected the notion of a trade war, emphasizing that such conflicts ultimately yield no winners.

The statement directly addresses Trump’s justification for the proposed tariffs, citing the flow of fentanyl from China through Mexico and Canada into the United States. This latest escalation marks a significant development in the long-standing trade dispute between the two economic giants.

The proposed tariffs, scheduled for implementation on February 1st, echo a similar threat made by Trump earlier, targeting Canada and Mexico with 25% tariffs over concerns about illegal immigration and fentanyl trafficking.

This consistent pattern of utilizing tariffs as a tool to address broader geopolitical concerns highlights the complex and multifaceted nature of the relationship between the United States and its major trading partners.

China’s economy, heavily reliant on exports to sustain its economic growth, faces significant vulnerability to such protectionist measures. Despite ongoing efforts to diversify its economy and boost domestic consumption, exports remain a crucial pillar of China’s economic engine. The potential impact of a 10% tariff on Chinese goods entering the U.S. market could trigger substantial ripple effects throughout the global economy.

The current trade tensions represent a continuation of a protracted struggle dating back to the Trump administration’s first term, marked by the imposition of substantial tariffs on Chinese imports over alleged unfair trade practices.

These actions were further reinforced by the subsequent Biden administration, which implemented sweeping measures aimed at restricting Chinese access to critical high-tech components.

Trump’s recent pronouncements signal a potential further escalation of these long-standing trade disputes. China’s response clearly indicates its readiness to defend its economic interests and navigate the complex landscape of international trade relations.

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