Relationships between the molecular structure and moisture-absorption and moisture-retention abilities of succinyl chitosan

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THE COMPOSITIONS OF RELATIONSHIP BETWEEN APPROACH SPEED AND CENTRE GRAVITY (CG) IN THE FLOP STYLE

ABSTRACT - By examining two excellent men high jumpers, aiming at explaining relationship between approach speed and the height of the body is centre of gravity, so as to afford theoretical basis for coaches and athletes to grasp reasonable sport skills. METHODOLOGY - The High speed Cameras (Model:LBS - 1 GA,speed: 100 frames persecond), Pulling-force sensor (Model : HYL-1) and Remote EMG meter (Model: Multi-Telemeter 551, Japan made) were simultaneously operated by means of synchronous Signal Generator. RESULTS AND DISCUSSION - The compositions of relationships between approach speed and centre of gravity (CGJ in the plop style when taking off are as following: 1. Speed relatively low, CG relatively high. 2. Both speed and CG are relatively lower. 3 Both speed and CG are higher. 4. Speed much higher, CG relatively lower. A very effective take-off can be made by this approach method. However, a deep flexing of knee, which, if is overdone, might affect an explosive extension, is needed. This approach method is necessary for gaining high scores, but it is too difficult to perform. As to the relationships between approach method and CG, there are two elections. One of them is keeping a relatively lower CG, which inevitably causes an negative vertical velocity when taking off. The other is slightly heightening CG to reduce this negative vertical velocity. To solve the above problem, one should organise approach method and CG height the most excellently, as is different according to different person

ON THE ORDER; TIME PROCEDURE AND TIME DIFFERENCE OF MUSCLE'S STRENGTH WHEN DOING SWING PARTS AFTER HANGING ON FLYING RINGS

INTRODUCTION -How is the magnification of the lower back muscles exerting force during back and whip swing from hanging position in ringn How is the effect of these muscles on the movement? The study about the problems has not been found op to now in home and abroad. In this study, we selected five typical movements of back and whip swing in rings and revealed the four muscles acting mainly on the back and whip swing in rings METHODOLOGY • Five male gymnasts were selected as subjects in this study, three among them were selected from Shanxi Gymnastic team, other two from China National Gymnastic Team The High-speed Camers (Model LSS-16A, soeed.1 00 frames persecond), pulling-force sensor (Modef:HYL-I) and remoto EMG meter (ModeIMulli-Telemeler 551, (Japan made) were simultaneously operated by means of Synchronous Signal Generalor. EMG signal from four muscle groups was directly sent into microcomputer (APPLE 11) to proc ess, and signals of EMG and pulling-force sensor were also recorded by, Multi Telemeter, the dale of camera was processed by Film Analyzer (Model: NAC MOVIAS 100). RESULTS AND DISCUSSION -Copating the first peak with the second peak of pulling-force curve, the value of first peak was smaller. This reason was caused by the dropping shoulders. There for the more complex the great the muscles exerting force (pulling force) acting on the rings, because the magnifition of support force acting on the rings depended mainly upon the extent of muscle contraction. Front the point of view of the lime course of the muscle contraction, the maximal value or mean voltage in ENG always occurred in the course from the moment of the hip extending 10 exerting force was the largest in this course. The occurrence of the first pead indecated the end of the dropping shoulders and the start of whip swing Therefore during this course, athlete should voluntarily extend his hip joint

Origin of the different conductive behavior in pentavalent-ion-doped anatase and rutile TiO2_2

The electronic properties of pentavalent-ion (Nb$^{5+}$, Ta$^{5+}$, and I$^{5+}$) doped anatase and rutile TiO$_2$ are studied using spin-polarized GGA+\emph{U} calculations. Our calculated results indicate that these two phases of TiO$_2$ exhibit different conductive behavior upon doping. For doped anatase TiO$_2$, some up-spin-polarized Ti 3\emph{d} states lie near the conduction band bottom and cross the Fermi level, showing an \emph{n}-type half-metallic character. For doped rutile TiO$_2$, the Fermi level is pinned between two up-spin-polarized Ti 3\emph{d} gap states, showing an insulating character. These results can account well for the experimental different electronic transport properties in Nb (Ta)-doped anatase and rutile TiO$_2$.Comment: 4 pages, 5 figure

Dopamine dysregulation in a mouse model of paroxysmal nonkinesigenic dyskinesia.

Paroxysmal nonkinesigenic dyskinesia (PNKD) is an autosomal dominant episodic movement disorder. Patients have episodes that last 1 to 4 hours and are precipitated by alcohol, coffee, and stress. Previous research has shown that mutations in an uncharacterized gene on chromosome 2q33-q35 (which is termed PNKD) are responsible for PNKD. Here, we report the generation of antibodies specific for the PNKD protein and show that it is widely expressed in the mouse brain, exclusively in neurons. One PNKD isoform is a membrane-associated protein. Transgenic mice carrying mutations in the mouse Pnkd locus equivalent to those found in patients with PNKD recapitulated the human PNKD phenotype. Staining for c-fos demonstrated that administration of alcohol or caffeine induced neuronal activity in the basal ganglia in these mice. They also showed nigrostriatal neurotransmission deficits that were manifested by reduced extracellular dopamine levels in the striatum and a proportional increase of dopamine release in response to caffeine and ethanol treatment. These findings support the hypothesis that the PNKD protein functions to modulate striatal neuro-transmitter release in response to stress and other precipitating factors