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Comment Re:Nope - Range and Milage (Score 1) 206

Nissan actually has just published a detailed statement regarding range for the Leaf http://www.nissanusa.com/leaf-electric-car/index#/leaf-electric-car/range-disclaimer/index. Turns out that running the climate control has quite an effect on range. Part of that is the influence of temperature on batteries and part is the energy consumption of climate control. Heating is worse than cooling it seems. The partial mitigation is being able to have the vehicle pre-condition the temperature while it's plugged in. And the Leaf is rated for 90 MPH (150 KMPH).

Comment Preordered a Leaf (Score 5, Interesting) 206

Paid to stand in line and expect delivery by end-of-year. I nearly had an EV-1 back in the day, but backed out when they refused to sell them, would only lease. This time should be the charm. The charger location is approved by my HOA and the install estimate is done, so it's just a matter of when Nissan can get production ramped up enough. there's a set of legacy chargers across from my office, so I have the option of plugging in during the day. And the city gives free parking to EV owners in their garages, so it is even subsidized. They just need to update the AVCON plug to the newer version and things should be set.

Comment Re: Nonstandard notation (Score 5, Insightful) 1268

In the elementary and middle-school texts standard notation is rarely used. I've got a doctorate, but helping my kids through their math often is a real stumper. It is very common to use a box, a blank, or a parenthesis to indicate something that they are to fill in in a "number sentence". The theory seems to be that you don't need to teach about unknowns and variables because that would be confusing. So this notation is somehow intuitively obvious to the least observant. As they may not cognitively be ready for the concept it becomes even more obscure. Have a look at the books sometime - you'll want to scream. I can testify that the methods used up until the mid 1960's were MUCH more effective in creating mathematical literacy. The Stanford Studies Mathematical Group (SMSG) series of math texts was, to my memory, the flying wedge of what was termed then "The New Math". The strategies like 4+3+2=()+2 come from that movement. Truth is, the "New Math" is a dismal failure and resulted in the destruction of the mathematical competency of two generations of American students. Unfortunately the math teachers now all came up through that system and have no idea that there is a better way to teach math.

Comment Heart Shell (Score 1) 258

TFA contemplates using either cadaver hearts or non-human (pig is the readily available animal with a compatible sized and structured heart). De-cellularizing those would remove the antigens that trigger rejection. Then using compatible stem cells to create a new histocompatible heart using the old framework. Pop into the patient.

Currently we use a de-cellularized pig heart valve as an implant. The patient's own cells invade the matrix and set up housekeeping, very much the way the fetal cells did in this demonstration.

One other advantage would be that the new organ would be 'young', not whatever age the donor might have been.

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