Protecting Fiber Optic Cables From Damage
An Ultrasonic Delaminator for End-of-Life EV Batteries
Fiber optic cables are vulnerable to external sources of damage due to the inherent mechanical strength of fibers in the cable and damage from the environment. When the fiber optic cable ends are damaged, the fibers are exposed to water which may lead to stress cracking, breakage, and/or thermal effects, all of which can lead to an undesirable failure.
Fiber optic cables are typically bundled and buried up to several meters deep underground within the ground. When the cable is exposed to the soil or ground, the fiber optic cable must be protected from damage due to external forces when the cable is buried. The most common protection is a fiberglass jacket which is bonded to a plastic tube surrounding the fiber optic cable within the buried cable. The jacket provides a high tensile strength so that the glass fiber can be pulled out of the cable. A protective cable is placed in the jacket. The cable itself is comprised of a bundle of fibers surrounded by a plastic tube with a fiberglass sheath around it. The cable may also include an interconnection within the tube. In order to protect the fibers of the cable and cable jacket from damage, the cable may be made from materials which increase the tensile strength of the cable.
Fiber optic cables are particularly exposed to damage when buried in the ground. In a typical scenario, the cable may have a large water content due to moisture and/or soil which is entrapped inside the cable after it’s buried. For example, in certain regions of the United States, moisture in the soil can become a problem because of a lack of drainage.
A number of devices have been developed to protect fiber optic cables from damage due to soil and moisture. These devices include a flexible plastic tube with a polyvinyl chloride or PVC jacket, and a fiberglass cable sheath attached to the plastic tube. In addition, other types of devices have been developed to shield the fiber optic cable from damage from external sources of damage. For example, the devices have been designed to create a large strain zone where stress and bending are less likely to cause failure. An example of such a device is the Flexible Fiber Optic Cement (FPOC) Sheath Kit, available from MCO Fiber Optic, Inc. of San Antonio, Tex. The kit includes an aluminum sheath with an inner tube with a PVC jacket, and an extruded polyvinyl chloride (PVC) tube attached to the inner tube.
OpenReach – What we can do to improve the UK economy
James Lilley, Director of All-IP at Openreach, said in a canned statement : “It is crucial that businesses understand their current systems and the implications of the shift. “This upgrading will provide the nation with faster, more reliable services and allow devices to be more connected, thereby providing a framework for the UK industry to develop innovative emerging technologies. Taking these simple steps now will make the process much smoother.
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Wednesday, 28 September 2013.
Banks had become so confident in the market that they were prepared to offer what they considered a great deal on interest rates. Many of them had put the word out in various languages that they were willing to cut rates for an extra £2 in exchange for a rate of 20.
For those of you who aren’t aware, this was a rate of about 2. This rate has not, to date, been matched by other banks. However this was what the Wall Street Journal said in June 2013:.
The bank, Barclays, saw its savings rate falling to 0. 5% at the end of June, but the reduction is expected to be limited to £2 a year.
The bank had offered the new rate for three years for £25 (£27 a year for a standard deposit account. ) The move could lead some in the community to call for a review of interest rates in Britain.
“The question is not whether [we are] willing to pay more for some of our loans, the question is whether the public will choose a bank run and pay £27 a year for a bank certificate of deposit that is worthless unless it’s called the ‘London Interbank Offered Rate’ “.
Some see the move as proof that London is open for business for American banks.
So, for those of you who haven’t got an answer, please read on.
Barclays has already been offering this rate for 3 years, which is what I call a “rate”. I say this because Barclays does not offer the traditional fixed rate on any account, it offers a floating rate and it has a fixed duration of at least 9 months.
The point is not that they are unwilling to offer this rate. They have already been offering it for 3 years. Rather, it has been clear to them that they will only change it in the future, so they have decided to change it now.
Detecting COVID-19 in the World: A Human-Centred Approach
Each app asked a fair bit of personal data (name, address, number) in the public health servic service. If I had been exposed to someone infectious with COVID-19, public health officials would soon know how to find me and notify me that I must isolate to reduce the potential for further spread of infection. It all seems like a very good idea and appears to work much better than the invisible and always-active Bluetooth proximity detection billed by Apple and Google during the earliest days of the pandemic. (The Australian government tried a variation not based on Apple/Google technology. Although theoretically ideal from a privacy perspective, that technology never really did the job — resulting in only a very few detections in Australia. We have reverted to a human-centred approach that requires people to check in as they travel through the world — creating a breadcrumb trail that contact tracers can access should they need it.