In this article, we introduce the concept of weak F?m,?-contractions on relation-theoretic m-metric spaces and establish related fixed point theorems, where ? is a control function ? relation. Then, detail some results for cyclic-type F?m,?-contraction mappings. Finally, demonstrate illustrative examples discuss upper lower solutions Volterra-type integral equations form ??=?0?A?,?,??m?+??,??0,1.

If all the forces o f nature can be reduced to those which follow from a linear combination o f a scalar and vector potential, as in electrodynamics, Lorentz invariance can be derived as a dynamic symmetry. All that has to be done is to assume that there is an all pervading substratum or ether, transmitting those forces through space, and that all physical bodies actually observed are held toge...

BACKGROUND It is unclear whether mental simulation without actual muscle contraction associated with actual motion can increase the excitability of the spinal neural function. OBJECTIVE To determine the best method for mental simulation without actual muscle contraction, we analyzed the F-wave of thenar muscles after stimulating the median nerve by motor imagery whilst holding the sensor of a...

we investigated contraction to noradrenaline (na) and kc1 and sensitivity of na at the level of larger vessels (thoracic aorta and vena cava; left renal artery and left renal vein; lateral saphenous artery and lateral saphenous vein and finally central ear artery and marginal ear vein) in a model devised to mimic heart failure. the model presented here is the rabbit coronary ligation model in w...

This is an expanded version of a talk given in the Fall 2007 Forschunggseminar at the Universität Duisburg-Essen. It is written for non-specialists, and hence might contain more details as experts would think necessary. Naturally, no claims regarding originality are made. The purpose of this short note is to provide a mostly self-contained exposition of Shokurov's reduction theorem. We will fol...

Inactivation o f excitation-contraction coupling was examined in extensor digitorum longus (EDL) and soleus muscle fibers from rats injected daily with tri-iodothyronine (T3, 150 t~g/kg) for 10-14 d. Steady-state activation and inactivation curves for contraction were obtained from measurements o f peak potassium contracture tension at different surface membrane potentials. The experiments test...