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New method developed for faster typhoid diagnosis

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New method developed for faster typhoid diagnosis

~By Monika Kundu Srivastava

Indian scientists have developed a rapid and accurate method for diagnosis of Salmonella typhi bacteria which causes enteric fever and typhoid.

The new test, developed by scientists at the Indian Institute of Technology (IIT), Delhi, requires minimal blood quantity, besides being accurate and potentially cost-effective. Blood-culture based diagnosis of enteric fever, used at present, is time-consuming and requires skilled practitioners and costly instruments. Besides, these methods sometimes even fail to detect and identify the bacteria correctly.

In blood culture tests for diagnosis of enteric fever, once the bacteria are separated, identification depends on various biochemical and serological tests. Most serological methods, which look for antibodies in the body, are unable to pick up an infection in the early stages as the numbers are low. The lack of specific, rapid and affordable diagnostic tests leads to inappropriate use of antibiotics in all fevers cases.

The new method uses magnetic nanoparticles coupled with antibodies. In tests, it was found that over 65 per cent bacteria cells got bound to nanoparticles within 30 minutes. The bacteria were separated from nanoparticles using magnets by heating it at 65°C for 45 minutes. The cells were reheated at 100°C for 5 minutes to breakdown the covering of bacteria to recover the genetic material. Then the liquid was collected and put through the loop-mediated isothermal amplification (LAMP) process to increase in availability of genetic material required for identification of the bacteria.

This method is quick as there is no need for multiple cycles of rapid heating and cooling as required in traditional methods. The minimum time taken for conventional methods to confirm the presence of disease-causing bacteria is 72 hours while the new method confirmed it in 6 hours, according to results of the study published in journal PLOS One.

The method, according to the study, has the potential for clinical use due to its high detection levels and ability to identify cells which can cause disease in a quicker turnaround time. In future, it can be developed into a handheld and portable device.

The research team included Dinesh Kalyanasundaram, Avinash Kaur and Ravikrishnan Elangovan (IIT, Delhi); Arti Kapil and Sandeep Jha (AIIMS, New Delhi). The study was funded by the Naval Research Board, Department of Science and Technology (DST) and Indo-German Science and Technology. (India Science Wire)

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Samsung Galaxy S25 Ultra and iPhone 16 Pro Max: A comparative look at prices and specs in India

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Samsung Galaxy S25 Ultra with car crash detection feature

Samsung has introduced its latest high-end flagship, the Galaxy S25 Ultra, in India, igniting a new chapter in its ongoing rivalry with Apple’s iPhone 16 Pro Max. Both phones represent the pinnacle of smartphone technology, but they come at distinct price points and offer different specifications that cater to various user preferences.

Price comparison in India

The Galaxy S25 Ultra is available in three variants: the base model with 256GB of storage is priced at Rs 1,29,999; the 512GB model at Rs 1,49,999; and the 1TB version at Rs 1,65,999. These variants are offered in four color options: Titanium Silver Blue, Titanium Gray, Titanium White, and Titanium Black.

In contrast, the iPhone 16 Pro Max starts at Rs 1,44,900 for the 256GB model, with the 512GB and 1TB versions priced at Rs 1,64,900 and Rs 1,84,900, respectively. Samsung’s offerings are notably less expensive across similar storage options, with the 1TB model being nearly Rs 19,000 cheaper than its Apple counterpart.

Specifications face-off

The Samsung Galaxy S25 Ultra boasts a 6.9-inch display, slightly larger than its predecessor, and features a more contemporary design with rounded edges. Despite its larger size, it maintains a lightweight feel at only 218 grams and includes a robust 5,000mAh battery. The camera setup has been significantly upgraded, featuring a 200-megapixel primary sensor paired with a 50-megapixel ultra-wide and a 50-megapixel telephoto lens. It is powered by the Snapdragon 8 Elite for Galaxy, enhancing both efficiency and performance.

The iPhone 16 Pro Max, also with a 6.9-inch display, utilizes Apple’s Super Retina XDR technology with Always-On and ProMotion features for a superior viewing experience. It includes a new gold color option and a novel Camera Control button, adding functionality exclusive to the Pro models. The device is equipped with the A18 Pro chipset and features a redesigned camera system with a 48-megapixel primary sensor and advanced video recording capabilities.

Performance and functionality

Both the Galaxy S25 Ultra and the iPhone 16 Pro Max are designed to offer top-tier performance. Samsung’s flagship includes 12GB of RAM, compared to the iPhone’s 8GB, potentially offering a smoother multitasking experience. The iPhone, however, continues to impress with its integration of hardware and software, leading to efficient performance in real-life usage scenarios.

This detailed examination highlights the strengths of each device, allowing consumers to make an informed decision based on their specific needs and preferences. Whether prioritizing camera technology, display features, or price, the Samsung Galaxy S25 Ultra and iPhone 16 Pro Max cater to all facets of premium smartphone requirements.

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Oppo Find N5 set to launch with 50W wireless charging and IPX9 water resistance

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Oppo Find N5 being tested underwater to showcase its IPX9 water resistance rating.

Oppo has officially confirmed that its latest innovation, the Find N5, will support 50W wireless charging and feature an IPX9 water resistance rating. The announcement comes as part of a series of teases highlighting the capabilities of this next-generation foldable smartphone, set to launch in February.

According to recent leaks, the Find N5 will be the first smartphone to incorporate the Qualcomm Snapdragon 8 Elite SoC, signaling significant performance enhancements. Pete Lau, Oppo’s Chief Product Officer, has touted the device as the “thinnest foldable phone,” positioning it against leading competitors like the latest iPhone in terms of sleek design.

Zhou Yibao, head of the Oppo Find series, shared insights via Weibo about the Find N5’s advanced features. The device not only matches the wireless charging speeds of newly released models like the Oppo Find X8 Pro and OnePlus 13 but also integrates seamlessly with in-car systems from major electric vehicle brands such as BYD and NIO.

In a compelling demonstration of its durability, a recent video posted by Yibao showed the Find N5 being submerged underwater, showcasing its capability to withstand significant water exposure, evidenced by its IPX9 rating. This test included recording underwater videos, highlighting the phone’s versatile camera capabilities in extreme conditions.

The Find N5 also sports a refined design with slimmer borders and a larger overall form factor compared to its predecessors, which could attract users looking for a sleek yet robust foldable phone.

As anticipation builds, Oppo has begun sharing images of the Find N5, revealing a foldable design as thin as a USB-C port when opened. This device promises to merge aesthetic appeal with functional excellence, setting a new benchmark in the evolving foldable phone market.

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Realme 14 Pro series set to launch in India tomorrow: Expected specs, price, and more

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Realme 14 Pro series launch with AMOLED display, Snapdragon 7s Gen 3 processor, and advanced camera setup.

Realme is gearing up to unveil its latest mid-range smartphones, the Realme 14 Pro series, in India on January 16, 2025. The much-anticipated event will also mark the launch of Realme Buds 5 wireless earphones, adding to the excitement among tech enthusiasts.

When and where to watch the launch

The Realme 14 Pro series will be launched at 12 noon on Thursday, January 16. Fans can catch the live-streamed event on Realme’s official YouTube channel.

Realme 14 Pro series specifications (Expected)

The Realme 14 Pro series, including the Realme 14 Pro and Realme 14 Pro+, has already been introduced in China, offering a sneak peek into its features.

The Realme 14 Pro boasts a 6.83-inch Full HD+ AMOLED display with a 120Hz refresh rate and an impressive 3840Hz PWM dimming for superior visuals. Under the hood, the smartphone is powered by the Snapdragon 7s Gen 3 processor, coupled with up to 12GB LPDDR4X RAM and 512GB UFS 3.1 storage. It is expected to run on Android 15 with Realme UI 6.0.

For photography, the device offers a triple-camera setup featuring a 50MP Sony IMX896 primary sensor with OIS, an 8MP ultra-wide lens, and a 50MP Sony IMX882 periscope telephoto lens with up to 6x in-sensor zoom. The front houses a 32MP selfie camera.

Additional features include an in-display fingerprint sensor, IP66, IP68, and IP69 water resistance certifications, and a robust 6,000mAh battery with 80W SuperVOOC fast charging.

Realme 14 Pro+ pricing (Expected)

The Realme 14 Pro+ is expected to be priced at approximately Rs 30,000 for the 12GB RAM/256GB storage variant and Rs 33,000 for the 12GB RAM/512GB version, based on its Chinese pricing of 2,599 yuan and 2,799 yuan, respectively.

As more details about the Realme 14 Pro surface, all eyes will be on tomorrow’s launch event for official specifications and pricing.

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