Thank you for taking a look at my project! But from what I can read in the JITx documentation, there are quite a few differences when compared to circuitscript. Firstly, they aim to provide a higher level design language compared to circuitscript, which targets only the schematic level at the moment. JITx goes beyond the schematic, and also does physical design as well as analysis. Secondly, JITx circuits are written in python, which honestly is clunky for defining the circuits as well as laying them out in a graphic schematic.
Given that these went straight to backers, and would have required the final die cast parts to test in the thermal chamber, they probably had not gone to an NRTL at the point the article had been written.
This product is about at the point of DVT in development flow, and therefore would be sent to testing about now. But, instead, being sent to backers.
PS, not a hypothetical circumstance for me. I've previously certified a number of luminaires under UL and CB Scheme. I was the technical chair of ANSI C136.37 for several years, and on the working groups of several other standards.
There are a number of pressureless casting techniques available. Investment casting is widely used, for instance. https://www.harmonycastings.com/ is a fancier example.
For this specific application, the manufacturing method determines the porosity of the material, and therefore the heat transfer.
CNC prototype parts will have better heat transfer than pressure die cast, and the pressure die cast will perform better than pressureless cast parts.
1. Insulin helps get sugar into cells. Glucagon gets stored sugar out of the liver into the blood. Diabetes management in 2025 only deals with supplying external insulin.
2. There are several variants of diabetes. Type 1 is an autoimmune disorder where the body attacks the cells that make insulin.
3. Too much insulin equals all the sugar getting sucked out of your blood and lymph and into cells. This is really bad in an acute way. Your brain cannot run without sugar. Accidentally give yourself too much insulin for the sugars and wind up dead or in a coma in short order.
4. Highs are also bad, but generally in a less acute way. There are exceptions, but being too high with blood glucose for a period of time doesn't have the acute risks of being too low. Diabetics (or their caregivers) carry around quick absorbing sugar sources to help against a low.
5. The peak action (fastest reduction in blood glucose level) of the common insulin, in the way we dose it, peaks 90 - 120 minutes after the dose. The long tail is about 5 total hours of action from the point of dosing. So you should give insulin in advance of when you expect digestion to move glucose into your bloodstream. This is tricky. Also, as insulin ages, the peak of the action happens later. If a new vial is 90 minutes, an nearly empty vial might be 120 minutes after dosing for peak action.
6. CGMs, the on-body instrument in question here, are both flakey and amazing. There's a novel of good and bad here. I'm glad they exist, they can be cantankerous. They are a tiny potentiostat, if that is something you happen to be familiar with.
7. Very high blood sugar is treated with extra insulin to overcome the osmotic pressure of having too much glucose in the bloodstream. There's also a lot of chemistry here (glycocalyx to get you started). If your blood sugar is high you generally need more insulin to get past the hysteresis effects. Once the blood sugar starts to come down, that extra insulin is still around, and can cause a dramatic low. CGMs let you observe this, and "catch the low" by eating sugar to replenish the baseline sugar trapped in circulation.
8. Diabetes management is challenge every day, multiple times a day. Especially with small child who doesn't communicate to you about what they believe about their blood sugar. This is my personal circumstance.
9. Endocrinologists have suggested some wild stuff to my wife and I. For instance, keep a tube of cake icing around, as you can administer it rectally to a child who is passed out (or worse) from a deep low blood glucose. This is how poor the standard of care can be.
Father of 4.5 YO son with Type 1 diabetes, and materials engineer by education.
as a parent of a healthy child I was getting anxiety just from reading what you are going through with this. my dad and sister are diabetics but I can’t imagine dealing with a child…
Our almost 5 year old has had T1D for two years. We ended up going the way of a controlled lower carb diet for our entire family. Other than the greatly increased cost to eat this way, it has been transformative for diabetes management of our son, the amount of sleep we get, and the lessened risk of aggressive lows.
We've managed to keep our sons A1C in the 6-7% window after we changed our diet to be heavily carb controlled.
That sounds like great family teamwork. I wish my partner would entertain changing their diet to accommodate this (I've asked). I imagine the challenges of life are slightly more tractable when you genuinely deal with serious adversity as a family unit.
I understand it means an extra burden for all; but to me, voluntarily doing something challenging together for a family members' benefit seems preferable to facing each adversity largely independently.
As an aside, while likely much better than uncontrolled, 6-7% A1C still seems on the high end for lifelong. You probably already know this, but exercise immediately after carbohydrate consumption can also help - e.g. family walk after dinner (another thing my partner isn't interested in)
Although it's possible for someone with type 1 to have an A1C below 6%, it's very difficult. I've known a few people like that, and they are all super users. It's also going to depend somewhat on the lab running the A1C test, personal biology (A1c is not only affected by blood glucose levels) etc. 6-6.5% is superb control! Parent should be very proud. 6.5-7% is still very good, I haven't looked at the distribution of A1c's for T1D recently, but that would be much better than median which I think is above 8%.
Especially with kids, it's difficult since you don't control how much they decide to eat making pre-bolusing meals challenging (part of why reducing carbs tends to be helpful for people is it reduces the need to pre-bolus and makes it less risky since you need less up front meal insulin).
I didn't mean to say it's not superb control for someone with T1D, only that there are likely still some negative health consequences at 6-7%, and that exercise after carbohydrates is one mechanism of potentially getting some additional marginal improvement.
This is good advice for pre-diabetics and type 2 diabetics but in type 1 diabetes exercise after meal often makes things worse. It makes insulin dosing less predictable.
We changed the entire family diet in part to help him not develop any complexes around food.
We would like to get him in the 5's, and I believe we'll get there. He was below 6.5% every checkup so far except the most recent one.
Between honeymooning and growth hormones, it's difficult to keep him in range from 10pm to 3am, while also not triggering a low after his stomach is empty.
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