... easily swept clean. The pigs can be ringed to
stop them rooting in the soil. In Europe special pig rings (small pieces
of iron) are sold, which are pinched into the upper part of the nose
(snout) ... factor in the conversion to commercial pig keeping.
There are numerous advantages to keeping pigs inside:
? The animals spend their energy putting on body weight r...
...
Pig keeping in the tropics 36
Three weeks after mating, the oestrus should be extra carefully
checked. If there is no sign of it then the sow is usually in -pig
(pregnant).
Feeding
In the ... of the problem and the treatment or
medicines administered.
• Information on the piglets, e.g. vaccination information.
Pig keeping in the tropics 50
• I...
...
? Taking the sow away from the piglets during weaning, rather than
removing the piglets.
? Putting the sow in a pen next to the boar after weaning.
? Bringing her into contact with the boar ...
Pig keeping in the tropics 54
may have occurred after mating, resulting in her infertility or a
miscarriage. This sow should be culled.
5 .2 Diseases leading to fert...
... place in the
Pig keeping in the tropics 62
If a pig is fed 1 kg of a 20 % protein mixture every day the rest of the
feed can be composed of feed less rich in protein. If a 30% protein
level ...
into the pen every day. In intensive systems iron-injections are often
given whilst in free-range systems piglets get iron from the soil. Wood
ash provides oth...
... intersection point of the P- locus, the Q
locus and the BL. In other words, if the intersection point of the P-locus with the BL and the
intersection point of the Q-locus with the border line coincide ... and stability constraints in the P-Q plane
Wind Farm – Impact in Power System and Alternatives to Improve the Integration
28
2
22
cos( ) sin( ) tan(...
... modelling errors; and r is the relative order of N
(s)/D(s) (Brosilow &
Joseph, 20 02) .
Example
Consider the following non-minimum phase system
G
p
(s)=
2( −2s + 2)
(2s + 1)(2s + 2)
. (50)
The ... that the set-point signal remains constant during the optimisation window, N
p
.
Consider the following quadratic cost function which is very similar to the one obtained by...
...
CrC
tC
(4.11.1)
and the kinetic continuity conditions give
11 22 33
22 2
11 1 22 2 33 3
11 1 22 2 33 3
11 22 33
22 2
11 1 22 2 33 3
11 1 22 2 33 3
111
()()()
()()()
111
()()()
()()()
1
iii
iii
iii
iii
iii
iii
...
23
where
denotes the wavenumber, normalized against R, of the wave traveling along the
centroidal axis. Substituting the a...
... Advanced Topics in Wind Power
22
2
12
.( )PSVVV
(6)
The power as the rate of change in kinetic energy from upstream to downstream is given by:
22
12
22
12
11
22
1
2
E
P
t
mV mV
t
mV ... (7)
Using the continuity equation (Eqn. 2) , we can write:
22
12
1
2
PSVVV
(8)
Equating the two expressions for the power P in Eqns. 6 and 8, w...