In the analytical expression of the PEMFC polarization curve, Eq. (16) , the independent variables are the current density, the temperature and the pressure, while the dependent variable is the voltage. Moreover there are a few constants, that usually are called parameters, and some of these are often unknown.
In particularly cold areas, Trachelospermum jasminoides is best grown in patio containers of loam based compost, such as John Innes No.2, that can be moved to a protected position over winter. Provide the twining stems with an appropriate support such as trellis, wires or a free standing climbing frame.row star jasmine plants in frost-free conditions until large enough to plant outdoors. When they are well grown, plant Trachelospermum jasminoides in fertile, well drained soil in sun or semi-shade. Choose a sheltered position that is protected from cold winter winds.
Gardenia âFrostproofâ (Gardenia jasminoides) âFrostproofâ is a prolific bloomer of fragrant 2-3â flowers. This new cultivar has a distinctive cup in the middle of the blossom, and the blooming season lasts from spring to fall. The plant has a nice symmetrical upright form with very attractive narrow green foliage thatâs about half the size of standard gardenia leaves. It can be maintained at a compact 12-14â tall in a pot, but grows to about 3â tall outdoors. It requires moist, somewhat acidic, soil and full to partial sun. As the name implies, itâs more tolerant of early frosts. Hardy to zone 6 with protection.