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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Electical stimulation of hand muscles
 Hrozáň, Michal ; Balogh, Jaroslav (referee) ; Sekora, Jiří (advisor)
Bachelor thesis explains the effect of electrical stimulation on muscle and nerve fiber. It describes the process of stimulation and principles that apply while stimulation with electric current is applied. Specific muscle stimulation of thumb is described. Work provides a solid base of knowledge for understanding the processes that are present in stimulation of living tissue, which will be implemented in construction of stimulator. User graphical interface was created in Matlab. User can communicate using this program with microcontroller ATMega328 of Arduino Uno Board. Microcontroller processes received data and generates voltage on its output pins. An amplifier and electrode triggering system was designed as well.
Detailed record
Functional Ultrastructure of Hymenopteran Stingers: Devastating Spear or Delicate Syringe
 ČERNÝ, Jan
In this study, we tested the hypothesis that a micro-serrated edge on the honey bee Apis mellifera stinger tip serves as a tool for more intensive crushing of cell membranes in the victim's tissues. This could have mechanical consequences as well as initiate metabolic pathways linked to cell membrane breakdown (e.g., production of biogenic amines). Accordingly, we found that hymenopteran species that use their stingers as an offensive or defensive weapon to do as much damage to the victim's body as possible had this cuticular microstructure. In parasitic hymenopterans, on the other hand, this structure was missing, as stingers are solely used to delicately transport venom to the victim's body in order to do little mechanical harm. We also demonstrated that the stinger lancets of the honey bee A. mellifera are living organs with sensilla innervated by sensory neurons and containing other essential tissues, rather than mere cuticular structures.
Detailed record
Electical stimulation of hand muscles
 Hrozáň, Michal ; Balogh, Jaroslav (referee) ; Sekora, Jiří (advisor)
Bachelor thesis explains the effect of electrical stimulation on muscle and nerve fiber. It describes the process of stimulation and principles that apply while stimulation with electric current is applied. Specific muscle stimulation of thumb is described. Work provides a solid base of knowledge for understanding the processes that are present in stimulation of living tissue, which will be implemented in construction of stimulator. User graphical interface was created in Matlab. User can communicate using this program with microcontroller ATMega328 of Arduino Uno Board. Microcontroller processes received data and generates voltage on its output pins. An amplifier and electrode triggering system was designed as well.
Detailed record

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