What's the difference between impractical and unpragmatic?

Impractical

Definition:

(a.) Not practical.

Example Sentences:

(1) A Health Ministry spokesman answers that the campaign has, in fact, stressed that use of condoms for "safe sex" does not provide complete protection but, since the only 100% sure protection, celibacy, is completely impractical, even partial protection is better than none.
(2) However, the slow CNS tissue uptake of vitamin E requires chronic dosing, making it an impractical agent for the treatment of acute neural injury.
(3) Computed tomographic scanning is an effective method of examining the pelvis but is time consuming and may be impractical in cases of severe injury.
(4) He has also declared that he will deport 11 million illegal immigrants, which opponents say is both heartless and impractical.
(5) Its merits are particularly obvious with multiparameter optimization where the gradient method, so far the only one employed in microbiology from a variety of optimization methods (e.g., refs, 9 and 10), becomes impractical because of the excessive number of experiments required.
(6) FK 506 is a superior immunosuppressive agent that should improve patient survival after the commonly performed transplant procedures, make feasible transplantations that have been previously impractical, allow immune intervention for serious autoimmune diseases, and create a better spin-off understanding of basic biologic processes including signal transduction.
(7) Current methods for determining plasma prekallikrein, one of three zymogens of the contact phase of plasma proteolysis, are laborious and impractical for general use in a clinical laboratory.
(8) It is impractical to compare all of these tests simultaneously on the same group of patients.
(9) The endotracheal tube remains the gold standard, although its universal use is impractical, while the EOA would appear to be an effective alternative and an important airway adjunct in the prehospital phase of CPR.
(10) CT is theoretically the most accurate method to assess contracture, but it is impractical because of expense and time requirements.
(11) Kenya has vowed to close the world’s biggest refugee camp within a year and send hundreds of thousands of Somalis back to their war-torn homeland or on to other countries, a plan decried by aid and human rights groups as dangerous, illegal and impractical.
(12) Britain and the US, both of which have strong financial sectors, have always been lukewarm about transaction taxes, arguing that they are impractical and will drive business offshore.
(13) Despite these favorable correlations, Doppler peak gradient generally overestimated catheterization peak-to-peak gradient (1 to 53 mm Hg), making it impractical for clinical use.
(14) The authors believe the ability to isolate and analyze acinar preparations from the rabbit lacrimal gland will facilitate various studies of acinar cell biochemistry and physiology that would be impractical with the relatively smaller amounts of material that can be obtained from rat or mouse exorbital lacrimal glands.
(15) Every modern government returned with a majority looks to take advantage of its first few months when the opposition is in disarray by ditching some impractical pledges (“taking out the trash” in the parlance of special advisers), pushing through unpopular measures, maybe adding some nasty ones, while seeking to establish a narrative that will cause their electoral rivals difficulties once they have finished mourning the poll win that never came.
(16) Although it is desirable that tests predict the presence of small tumours, the high requirements for sensitivity and specificity at current prevalence rates for lung cancer make this goal impractical.
(17) Although usable portal images can be acquired, presence of the large mirror renders the system impractical in many treatment geometries.
(18) It has a place in patients in whom endoscopic or radiological placement is impractical.
(19) The previously published procedure for calculation of rate constants associated with the death of microbial cells is shown to be so sensitive to variation in experimental data as to render it impractical for this application.
(20) Extensive overlap between male and female heart rates under normal and hypothermic conditions makes this technique an industrially impractical method for determining embryonic sex.