... identical structural topology. Figure 3.4a shows the functional schematic of a
spur gear set with an external gear mesh, whereas Figure 3.4b shows the functional
schematic of another spur gear set with ... addition to
labeling the links, the joints are labeled as well. In an incidence matrix each row
represents a link, whereas each column denotes a joint as outlined below.
joint j
B =
b
1,1
b
1,2
··· ... sketched in more than one functional schematic. Either gear
pair can assume either external or internal gear mesh. Hence, there is no one-to-one
correspondence between the functional schematic and...
... j
g
edges of the unlabeled graph are to be assigned as the
gear pairs and the remaining edges as the turning pairs. The solution to this
problem can be regarded as the number of combinations of j elements ... graph of a basic gear train, called the genetic graph, as a
building block. In view of the first structural characteristic, each time we increase
the number of vertices by one, we also increase the ... has already been assigned
from the previous circuit. Thus, we only need to determine the level of the 3–4
edge. We can assign a new level “c,” or use an existing level “a” for the 3-4 edge
asshowninFigures7.7canddwithoutviolatingthestructuralcharacteristicsC4
through...
... structural classification of parallel
manipulators has been made by Hunt [8].
In this section, parallel manipulators are classifiedinto planar , spherical, and spa-
tial mechanisms. The kinematic structures ... preferably mounted on or near the fixed base.
9.2.2 Structural Characteristics
We now translate as many functional requirements into structural characteristics as
possible. Obviously, the manipulator ... jack system for use as a
universal tire testing machine. Later, Stewart [17] developed a platform manipulator
for use as a flight simulator. Since 1980, there has been an increasing interest in...
... be an even number. Let x
2
assume the values of 0, 2, and 4, one at a time, and
solve Equation (A.8) for x
3
. Once x
3
is found, we solve Equation (A.6) for x
1
.Asa
result, we obtain the three ... g
1n
p
1
0 g
22
g
23
g
2n
p
2
00
.
.
.
.
.
.
.
.
.
.
.
.
000g
m,m
g
mn
p
m
.
The last row in Equation (A.5) contains n − m + 1 unknowns which can be solved
by the procedure outlined...
... canonical Ser-His-Asp
triad of the classical serine peptidases. In the latter
case, the Ser and His residues act as nucleophilic and
general acid ⁄ base catalysts, respectively [9,10]. The Asp
residue ... was determined as described
above except that 0.1 m sodium acetate ⁄ 0.1 m sodium phos-
phate was used as the buffer component and the pH was
varied from 2.5 to 8.0; the buffering capacity was ... proton
transfer from Asp164, which thus acts as a general
acid ⁄ base catalyst [17]. Therefore, this enzyme may
utilize a strategy of aspartic peptidase catalysis, in
addition to that of serine peptidase catalysis....
... synaptosomes
[21], as well as pharmacological studies such as those shown in (B). In slices, an a7* nAChR on adjacent glutamate terminals was found to indirectly
influence dopamine release via the release of ... gene
sequencing is active in suppressing the vascular response to
2318 A. Nicke et al.(Eur. J. Biochem. 271) Ó FEBS 2004
gastrointestinal systems as well as its addictive potential.
The combinatorial ... nAChR as well as by
their structure (for nomenclature of a-conotoxins see [31])
3
.
The w-conotoxin PIIIE has a structure similar to the
voltage-gated Na
+
channel-blocking l-conotoxins and
acts as...