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Top News In கண்டறிதல் மற்றும் ப்ரெவெந்ஶந் சந்தை Today - Breaking & Trending Today

Light Fantastic: Counting Single Photons at Unprecedented Rates

Credit:
Sean Kelley/NIST
A voltage is applied across the semiconductor. When a photon hits the detector, its absorbed energy kicks an electron off an atom in the semiconductor – the same photoelectric effect that generates electricity in solar panels.
That loose electron is accelerated by the applied voltage and causes a sort of chain reaction in which large numbers of adjacent atoms release an “avalanche” of electrons just as a small added stress can prompt an entire mountainside of snow to collapse. That avalanche current is the output signal. Finally, the device is reset by quenching the current with a counter-voltage and restoring the initial applied voltage. Because the avalanche involves such a large number of electrons, getting the entire system back to a quiet state where it is ready to detect another photon is challenging. ....

Michaela Wayne , Alanl Migdall , Joshuac Bienfang , Joshua Bienfang , Alan Migdall , Michael Wayne , Single Photon Avalanche Diode , Applied Physics Letters , 3d Imaging , மைக்கேல் வேன் , ஒற்றை ஃபோட்டான் பனிச்சரிவு டையோடு , பயன்படுத்தப்பட்டது இயற்பியல் எழுத்துக்கள் ,

Why mobile analytical technology is the answer for effective natural gas leak detection

Apr 05 2021 Read 17 Times
Author: ABB on behalf
of ABB Ltd
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The issue of methane leaks from natural gas pipelines is a very real one, requiring constant monitoring and control to minimize its impact for both environmental and safety reasons. With ABB’s UAV-based mobile gas leak detection system being launched at the end of March 2021, Doug Baer, Global Product Line Manager Laser Analyzers for ABB Measurement & Analytics, explains how the latest generation of mobile gas leak detection measurement technologies can help.
Pipeline networks, especially ones which cross entire countries and run for thousands of miles, will always present an issue when it comes to leakage. The variety of factors at play in operating and maintaining a network, including aging infrastructure, network pressures and the efficiency of any maintenance regimes, mean that leakage in a network can at best only ever be controlled rather than elimin ....

United States , France General , United Kingdom , Doug Baer , International Energy Agency , Global Product Line Manager Laser Analyzers , Paris Agreement , San Bruno , Enhancing Safety Act , Natural Gas Leak Detection System , Off Axis Integrated Cavity Output Spectroscopy , Google Earth , Continuous Emissions Monitoring Systems , Energy Agency , Down Methane Leaks , Gas Industry , Regulatory Roadmap , ஒன்றுபட்டது மாநிலங்களில் , பிரான்ஸ் ஜநரல் , ஒன்றுபட்டது கிஂக்டம் , டக் பேர் , உலகளாவிய ப்ராடக்ட் வரி மேலாளர் லேசர் பகுப்பாய்விகள் , சான் புருனோ , மேம்படுத்துகிறது பாதுகாப்பு நாடகம் , இயற்கை வாயு கசிவு கண்டறிதல் அமைப்பு , ஆஃப் அச்சு ஒருங்கிணைந்த குழி ஔட்‌புட் ஸ்பெக்ட்ரோஸ்கோபி ,

Detected: Mercury in drinking water

Detected: Mercury in drinking water
Detected: Mercury in drinking water
Bangalore Mirror Bureau / Updated: Apr 4, 2021, 06:00 IST
Researchers from the
Indian Institute of Science (IISc) and the Jawaharlal Nehru Centre for Advanced Scientific Research have developed sensors that can detect toxic mercury in drinking water.
They have proposed the use of cysteine conjugated naphthalene diimide (
CNC) bolaamphiphile functionalised etched Fiber Bragg grating (eFBG) sensor for
detection of mercury in drinking water.
In a paper published on highly sensitive and rapid detection of mercury in water using functionalised etched fiber Bragg grating sensors, the researchers said elemental
mercury is present in the environment due to natural and man-made causes such as volcanic eruptions, combustion of fossil fuels, industrial effluents, etc. ....

Indian Institute Of Science Iisc , Jawaharlal Nehru Centre For Advanced Scientific Research , Jawaharlal Nehru Centre , Advanced Scientific , Advanced Scientific Research , Fiber Bragg , Toxic Mercury , Indian Institute Of Science , Drinking Water , இந்தியன் நிறுவனம் ஆஃப் அறிவியல் இஸ்க் , ஜவஹர்லால் நேரு மையம் , ஃபைபர் தற்பெருமை , நச்சு பாதரசம் , இந்தியன் நிறுவனம் ஆஃப் அறிவியல் , குடிப்பது தண்ணீர் ,

Welcome To IANS Live - INTERNATIONAL - US reports over 13K cases of Covid variants

Photo Credit: IANS
IANSLive
Washington, April 3 (IANS) The US has recorded more than 13,000 cases of coronavirus variants, according to the latest data of the Centers for Disease Control and Prevention (CDC).
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For news, views and gossips, follow IANS at Twitter.
Update: 03-April-2021 ....

United States , Centers For Disease , News Service , India Private , Disease Control , All Rights , Corona Virus , ஒன்றுபட்டது மாநிலங்களில் , மையங்கள் க்கு நோய் , செய்தி சேவை , இந்தியா ப்ரைவேட் , நோய் கட்டுப்பாடு , அனைத்தும் உரிமைகள் , கொரோனா வைரஸ் ,

WA woman jailed for drug trafficking and illicit wealth confiscated

Date Time
WA woman jailed for drug trafficking and illicit wealth confiscated
A Nollamara woman was sentenced to seven years’ imprisonment yesterday (Thursday, 01 April 2021) after being arrested in 2019 with methamphetamine, heroin and $39,450 in illicit cash.
The woman was sentenced in the Perth District Court after previously pleading guilty to two charges of trafficking a marketable quantity of a controlled drug and dealing in the proceeds of crime worth $10,000 or more.
Australian Federal Police (AFP) arrested the woman, then aged 57, on 17 October 2019 after finding the illicit drugs, cash and other items when they executed a search warrant at her Nollamara home. ....

Western Australia , Australian Federal Police , Perth District Court , National Alcohol , Federal Police , Perth Mint , Drug Detection Dog , Proceeds Of Crime , Drug Trafficking , மேற்கு ஆஸ்திரேலியா , ஆஸ்திரேலிய கூட்டாட்சியின் போலீஸ் , பெர்த் மாவட்டம் நீதிமன்றம் , தேசிய ஆல்கஹால் , கூட்டாட்சியின் போலீஸ் , பெர்த் புதினா , மருந்து கண்டறிதல் நாய் , மருந்து கடத்தல் ,