Sunday, July 12, 2020

A lab takes a frugal-science approach to COVID-19


In origami microscope, a 20-cent centrifuge, and an app for tracking and identifying mosquitoes.
These are just a few of the many imaginative inventions that have resulted from the curiosity-driven — and often frugal — work of Manu Prakash, associate professor of bioengineering at Stanford University, and his lab. With their penchant for turning whimsical ideas into scientific realities, it’s perhaps unsurprising that these researchers are leading several COVID-19 projects.
 
But this time, the work is far from business-as-usual.

“The process right now is very strange. The lab was shut down,” said Prakash, referring to Stanford’s restrictions against all but the most essential lab operations during the pandemic. “We got approvals to do some essential work but there are still very stringent rules.”

Prakash and his team have evolved to become an all-hours virtual hive of activity, teleconferencing and sharing documents with collaborators around the world.



It has been an interesting time,” said Prakash during a Zoom interview sandwiched between two others that would take him to 11 p.m. “But I’m focused.”

The team is developing six COVID-19 projects so far — a number that will likely continue to grow. In brief, they are: a converter that makes full-face snorkel masks into reusable personal protective equipment, or PPE; guidelines for decontaminating N95 masks; a universal remote for controlling ventilators from outside a patient’s room; a ventilator built with abundantly available parts; a simple filtration test setup for face masks; and a technique, inspired by cotton candy machines, for spinning filter fibers from Styrofoam.

That trademark splash of Prakash lab quirkiness remains, but every creative solution conceived amidst this pandemic is built on deadly serious intentions and painstaking analysis. The group continues to follow their frugal science approach but with an increased emphasis on being able to scale up their innovations quickly and responsibly.

A scientific checkpoint
In the very early stages of each project, the lab is sharing their ideas and aims publicly on their website and Twitter.

“If any of our work inspires and energizes others, it already moves the needle in the right direction,” said Prakash. “This crisis is not just in our own backyard but is global, and making all the information — our current experiments, data, thoughts and ideas — accessible and live to everyone is the only way I could think of working in this time of crisis.”

Once the team feels their work has reached a stage where it could be a feasible solution in the clinical world, they move onto some formal work behind the scenes, such as final data analysis and, in at least one case so far, application for FDA approval. The last step, for now, is publishing a preprint and creating a formal website for each final product.

Of course, “finality” is a shifting concept in the fast-paced world of the novel coronavirus. Before this pandemic, health projects like these would have required months, maybe years of testing, fundraising and approvals. Now, with so many people looking to apply whatever skills or resources they have to the quick creation of vital solutions, barriers have been lowered and actions are swift, but this also raises the likelihood of overpromising and under-delivering.

“What started bothering me early on was that everybody was waking up to the crisis but not appreciating that these are clinical problems that require a really rigorous mindset,” said Prakash. “For these solutions, there are strict expectations and you have to follow those no matter how much you love an idea.”

More so than ever before, the Prakash lab understands that the greatest value they can offer in the current situation is taking responsibility for the most scientifically-demanding portions of their projects in a process that unites expert and non-expert contributors.

“There are lots of DIY [do-it-yourself] solutions out there, but the DIY community is not used to clinical validation. Many people are working on the first 90 percent of every problem,” said Prakash.
“If people want to help, they can replicate our efforts and they can share their replicated data. Then we can cover that last 10 percent. The role we are really playing is being a scientific checkpoint. People’s lives are on the line.”

A new way

Like many of us, Prakash and his team are exhausted. They’re encouraged by their achievements so far — including going from idea generation to FDA submission in seven days for their snorkel-based “Pneumask” — and the need for creative solutions keeps them determined. Thinking beyond COVID-19 can feel like a luxury, but Prakash wonders, in the brief snatches of free time available to him, what he and others will do with the hard-won lessons of this pandemic once it’s over.

“It’s almost teaching us a new way of doing science,” said Prakash. “It’s something I’ll reflect more on later, when I can. But what if we did something like this for malaria? What if we did this for climate change? Could we finally crack those problems?”

This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.     

https://gscrochetdesigns.blogspot.com. one can see my crochet creations  
https://gseasyrecipes.blogspot.com. feel free to view for easy, simple and healthy recipes    
https://kneereplacement-stickclub.blogspot.com. for info on knee replacement


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Saturday, November 23, 2019

UV Protection is Important for Your Eyes


Most of us are aware of the dangerous effects ultraviolet (UV) rays have on our skin, but not many realize the danger imposed on our eyes. However, while it may seem obvious to put on sun block, how should we care for our eyes? Be it from natural sunlight or artificial UV rays, UV radiation can cause significant damage to the eye's surface tissues as well as the cornea and lens. The rays may also burn the front surface of the eye, much like a sunburn on the skin. 

 What is UV radiation?
UV radiation consists of invisible rays from the sun. There are three types of UV radiation: UVA, UVB, and UVC. While UVC rays do not pose any threat (these rays are absorbed by the ozone layer) exposure to UVA and UVB can have adverse effects on your eyes and vision. 

Significant damage can be caused when exposed to these dangerous rays, both short- and long-term. It is also important to note that UV radiation can also be given off by artificial sources, like welding machines, tanning beds and lasers.

What are the short-term effects?
If exposed to UV rays while unprotected, you are likely to experience an effect called photokeratitis - an inflammation of the cornea caused by brief exposure to UV radiation. This usually occurs when combined with cold wind and snow. It is similar to a 'sunburn of the eye' and may be painful. Symptoms may include red eyes, a foreign body sensation or a gritty feeling in the eyes. You may also feel extreme sensitivity to light and experience excessive tearing. This is usually temporary and rarely causes permanent damage to the eyes.

What are the long-term effects?
Long term exposure to UV rays can be more serious. Scientific studies and research  have shown that exposure to small amounts of UV radiation over a period of years may increase the chance of developing a cataract which may damage the retina - the lining of the eye that is used for seeing. This damage is not reversible and  may contribute to chronic eye diseases as well as increase the risk of developing skin cancer around the eyelids. Long-term exposure may also increase the risk of developing pterygium - a growth that invades the corner of the eyes and the pinguecula - a yellowish, slightly raised lesion that forms on the surface tissue of the white part of your eye.

Protecting your eyes
It is important to wear quality sunglasses that offer good protection and a wide-brimmed hat when outdoors. Your sunglasses should block 99% of both UVA and UVB rays and screen out 75% to 90% of visible light. Sunglasses should also be free of distortion and imperfection and have lenses that are gray for the proper color recognition. Teenagers and children should also wear sunglasses when outdoors. Kids especially are at a greater risk for developing serious vision damage later in life without regular UV eye protection.

this is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.     
https://gscrochetdesigns.blogspot.com. one can see my crochet creations  
https://gseasyrecipes.blogspot.com. feel free to view for easy, simple and healthy recipes    
https://kneereplacement-stickclub.blogspot.com. for info on knee replacement
  
 
  

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