A load balancer is provided for balancing distribution of wireless clients among wireless access points. The pretreated material may then be further treated in a pulping process, for example, a soda-anthraquinone pulping process, to produce a cellulose pulp. The cavity includes a main body accommodating portion into which the terminal main body portion is to be accommodated and a groove portion into which the projection is insertable and movable forward when the terminal fitting is inserted in a proper posture into the cavity. The system also can compensate for NMR frequency shifts that may appear in the measured response signal to provide a more accurate polarization level or real T1 for the hyperpolarized gas.