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Tag: PCB

  • Los Angeles settles with Monsanto for $35 million over PCBs in waterways

    Los Angeles settles with Monsanto for $35 million over PCBs in waterways

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    Contamination of key Los Angeles waterways such as the Santa Monica Bay, Los Angeles Harbor and Echo Park Lake due to the spread of toxic chemicals is at the heart of a $35-million settlement between the L.A. City Council and agriculture giant Monsanto and two smaller companies.

    The City Council on Tuesday announced the payout by the companies to settle a lawsuit filed in 2022 over damage from long-banned chemicals called PCBs, which have been linked to health problems including cancer.

    The City Council approved the settlement at Tuesday afternoon’s meeting, voting 13 to 0 after a closed session. Councilmembers Imelda Padilla and Nithya Raman were absent.

    A call to the office of City Atty. Hydee Feldstein Soto was not immediately answered, nor was a call to Monsanto’s representation.

    In March 2022, then-City Atty. Mike Feuer sued Monsanto, which was swallowed by the German corporation Bayer in 2018, and smaller chemical companies Solutia Inc. and Pharmacia.

    The complaint sought compensation for the cost of past cleanups — and for future abatement of — polychlorinated biphenyls, or PCBs. The chemicals tainted and continue to pollute many Los Angeles waterways, including the Dominguez Channel, Ballona Creek, Marina del Rey and Machado Lake.

    “The city has expended millions and millions of dollars so far and is going to continue to expend millions and millions of dollars to remediate this issue,” Feuer said at the time.

    PCBs are human-made organic chemicals that have no known taste or smell and range in consistency from oils to waxes, according to the Environmental Protection Agency.

    They had several commercial uses, including in transformers and capacitors, oil used in motors and hydraulic systems, cable insulation, oil-based paint, caulking and plastics.

    PCBs were produced and used domestically from roughly 1929 until they were banned in 1979, according to the EPA.

    From the 1930s through 1977, Monsanto was the sole producer of PCBs in the United States, according to the National Library of Medicine.

    Exposure to PCBs increases the chances of a person developing cancer while diminishing the effectiveness of the immune system and damaging reproductive organs and the nervous system, according to the EPA.

    The lawsuit alleged that Monsanto knew that “its commercial PCB formulations were highly toxic and would inevitably produce precisely the contamination and human health risks that have occurred.” Instead of informing public officials, the company “misled the public, regulators, and its own customers about these key facts.”

    The lawsuit alleged that, as early as 1937, Monsanto acknowledged internally that PCBs produced “systemic toxic effects upon prolonged exposure.”

    Many of Los Angeles’ waterways had been impaired by PCB contamination, according to the lawsuit.

    The city has said that it continues to shoulder the cost and responsibility of cleaning these locales along with monitoring and analyzing samples.

    People face PCB exposure, according to the lawsuit, by eating contaminated food, breathing contaminated air, or drinking or swimming in contaminated water. Fish captured in contaminated waters and eaten also provide an avenue for PCB exposure.

    The settlement avoids a court trial, which presented some risk to the city.

    Seattle claimed a $160-million settlement with Monsanto in July over PCBs in the city’s drainage system and rivers.

    In May, however, an appeals court in Washington state overturned a $185-million verdict against Monsanto in a lawsuit brought by three teachers who claimed brain damage due to PCB leaks.

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    Andrew J. Campa

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  • Pakistan may pull out of Asia Cup 2023 if hosting rights are withdrawn: PCB’s Ramiz Raja

    Pakistan may pull out of Asia Cup 2023 if hosting rights are withdrawn: PCB’s Ramiz Raja

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    Ramiz Raja, Chairman of Pakistan Cricket Board, has said that the country might pull out of the 2023 Asia Cup if their hosting rights are taken away and the tournament gets shifted to another country as the Indian team will not be travelling to Pakistan.

    Ramiz Raja, in November, had said that if India opts out of the Asia Cup because it might be held in Pakistan next year, Pakistan team will also not travel to India for the 50-over World Cup in 2023.

    Ramiz was quoted by ESPNCricinfo on sidelines of the Pakistan-England Test in Rawalpindi as saying that Pakistan has won the rights fair and square. “If India does not come, they would not come. If the Asia Cup gets taken away from Pakistan, maybe we are the ones that pull out,” he added.

    After a gap of 17 years, England have toured Pakistan. New Zealand will be playing a test series in Pakistan in the last week of December. Australia travelled to Pakistan during March 2022.

    “I have always said that we have to improve the economy of Pakistan cricket and that will only happen when our team performs well, we have done it in the 2022 T20 World Cup. Pakistan cricket team has beaten the board of billion-dollar economy twice in one year,” he added.

    Raja said that he knows Team India won’t come to Pakistan because the government won’t allow them to come due to strained relations. But it isn’t right to take the Asia Cup away from the host on that basis, he said

    The speculations of team India travelling to Pakistan for the tournament were dismissed by BCCI secretary Jay Shah in October this year. He had said that the tournament must be held at a neutral venue.
     

    Also read: We won’t go to India for World Cup if they don’t travel to Pakistan for Asia Cup: Ramiz Raja

    Also read: Pakistan: As ‘unidentified virus’ hits England squad, PCB hints at delay in 1st Test

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  • Hemeixin Electronics Announces Rigid Flex PCBs for Space-Limited, Multi-Layer, High-Speed Designs

    Hemeixin Electronics Announces Rigid Flex PCBs for Space-Limited, Multi-Layer, High-Speed Designs

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    Press Release



    updated: Oct 16, 2017

    ​It was the early technology to design the circuitry to fit the enclosure. Designers had to focus equally on the design aspects as well as the PCB size and shape. Now with Hemeixin’s rigid flex PCB, designers have the flexibility to focus on the electronics rather than mechanical aspects of the design. Rigid flex PCB contains both rigid PCBs and flex PCBs. Rigid flex PCB contains both rigid PCBs and flex PCBs. They are connected permanently to cater new challenges which rigid or flex PCBs couldn’t face alone. This is not a new innovation. It has been there for more than two decades. But due to manufacturing complexity and manufacturing cost, this technology was only used for military and aerospace applications. But due to improvements in manufacturing technologies, now rigid flex PCBs can be used for most of the consumer grade, cost-oriented PCB requirements as well.

    Just like flex PCBs, rigid flex PCBs contain multiple inner layers. These inner layers are carefully attached using an epoxy pre-preg bonding film just like a multilayer flex PCB. Multilayer rigid flex PCB may contain rigid PCB internally, externally or both as required to meet the requirement. Rigid and flex PCBs are interconnected using plated thru holes. This technology can cater high component densities while keeping the quality control at a high level as well. These PCBs are rigid where extra support is required and flexible when extra space is needed. Rigid flex PCBs reduce the interconnects compared to rigid PCBs. This helps the BoM cost and assembly cost to reduce and errors which can occur during assembly are reduced. Furthermore, it improves the reliability of the circuit as it reduced the points of failures. In high-density applications, we can use rigid part to populate electronic components in high density while using flex PCB for routing. Flex PCBs support narrow trace widths. Then we can use the extra space for inclusion of extra features.

    Rigid flex PCBs reduce the device cost since flex PCB is very lightweight compared to rigid PCBs. Furthermore, device size can be reduced due to PCBs flexible property and due to low component count. These PCBs can be used for industrial applications where there are infinitely bending parts. Design can be done in a way the flex part bends with the moving parts of the machine.

    Today rigid flex PCBs are popular in medical, avionics, instrumentation, industrial controls and sensors, automotive, wearable devices and military. Due to its flex nature, these PCBs can withstand shocks. Rigid flex PCBs are useful when designing high-end high-speed designs. This technology lets lower material DK values, tightly coupled and uniform material thicknesses and homogeneous flex core construction. Rigid flex PCBs display improved heat dissipation. Due to the construction using thinner materials and due to greater surface-area volume ratios heat dissipation happens far better than rigid PCBs. Just like rigid PCBs, rigid flex PCBs support blind and buried vias to cater the requirements of complex PCB designs. There is a special consideration during the designing process of rigid flex PCBs. The flexible polyimide core can shrink once the bonded copper foil is etched. This has to be considered by the designer.  

    Source: Hemeixin Electronics Co.

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