What's the difference between shiver and siver?

Shiver

Definition:

(n.) One of the small pieces, or splinters, into which a brittle thing is broken by sudden violence; -- generally used in the plural.
(n.) A thin slice; a shive.
(n.) A variety of blue slate.
(n.) A sheave or small wheel in a pulley.
(n.) A small wedge, as for fastening the bolt of a window shutter.
(n.) A spindle.
(v. t.) To break into many small pieces, or splinters; to shatter; to dash to pieces by a blow; as, to shiver a glass goblet.
(v. i.) To separate suddenly into many small pieces or parts; to be shattered.
(v. i.) To tremble; to vibrate; to quiver; to shake, as from cold or fear.
(v. t.) To cause to shake or tremble, as a sail, by steering close to the wind.
(n.) The act of shivering or trembling.

Example Sentences:

(1) Patients in group A had smoother increases in oxygen uptake and core temperatures, greater cardiovascular stability as reflected by the rate-pressure product, and no visible shivering.
(2) Patients who had sustained shivering associated with lidocaine epidural anesthesia were given normal saline or butorphanol 1 mg.
(3) If a sparse crowd, shivering in suddenly chill conditions out of step with the warmth Edmonton had enjoyed in previous days, did not exactly help the atmosphere, the action remained intense.
(4) In conclusion, these results further differentiate mld from its allele shiverer, which shares with mld a dramatic reduction of MBP and absence of major dense line but, in contrast, presents other important biochemical differences in CNS myelin.
(5) The beach curved around us and the sun shone while the rest of the UK shivered under grey skies and sleet.
(6) Other onlookers shivered, recalling Iglesias’s praise for Venezuela’s late president Hugo Chávez and fearing an eruption of Latin American-style populism in a country gripped by debt, austerity and unemployment.
(7) It has been concluded that there is no non-shivering thermogenesis in the young calf.
(8) In addition, there is immunocytochemical evidence for abnormal accumulation of MAG in perikarya of oligodendroglial-like cells, suggesting the possibility of a transport block for myelin proteins in the shiverer mutant.
(9) Shivering may be a warning sign of brain stem anaesthesia and demands special care to anticipate life-threatening complications.
(10) The higher hypothalamic and spinal cord clamp temperatures were, the lower residual internal temperature fell before shivering occurred and heat production rose.
(11) The peroxidase-antiperoxidase technique was used for immunocytochemical localization of carbonic anhydrase in the mouse spinal cord to detect whether this antigen was normally present in myelinated fibers, in oligodendrocytes in both white and gray matter, and in astrocytes, and to determine where the carbonic anhydrase might be localized in the spinal cords of dysmyelinating mutant (shiverer) mice.
(12) Both drugs reduce metabolic heat production (about 35% at 9 and 20 degrees C, and about 15% at 35 degrees C) by inhibiting shivering or by reducing activity or both.
(13) Eight male subjects were cooled on three occasions in 22 degrees C water and rewarmed once by each of three procedures: spontaneous shivering, inhalation of heated (45 degrees C) and humidified air, and immersion up to the neck in 40 degrees C water.
(14) Pharmacological changes in chemoreceptor activity induced transient and opposite changes in ventilation and shivering intensity, confirming their role in the control of thermogenesis.
(15) The shiverer mouse mutation has been used as a model in this series of experiments.
(16) Muscular shivering activity (integrated EMG) of both species increased below thermoneutrality parallel with increasing oxygen uptake and heart rate.
(17) Pulmonary artery and urinary temperature were measured every 15 minutes, and shivering was evaluated electromyographically.
(18) These results obtained in wakefulness suggest that the absence of shivering previously shown in cats during PS without atonia cannot simply be the result of an overall increased threshold for heat-gain responses but, rather, are in keeping with the observation that thermoregulation is suppressed in PS.
(19) The effectiveness of intravenous meperidine and warm local anesthetic for prevention of postanesthetic shivering was evaluated in urology patients undergoing epidural blockade for extracorporeal shockwave lithotripsy.
(20) Three days after NRM lesion the fall in core temperature evoked by an exposure to 14-15 degrees C was smaller than before lesion, furthermore the body temperature threshold for shivering increased.