a 14 years old boy who had a ventriculo-peritoneal shunt since the age of 5 months, was hospitalized due to headaches, nausea, vomiting and abdominal distension. in abdominal ct and sonographic evaluation, pancreatic pseudocyst or mesentric cyst were suspected. evaluation of the shunt by radionuclide, however, was diagnostic and revealed a pseudocyst at the peritoneal end of the shunt. the pati...

The dielectric charging constitutes a major problem that still inhibits the commercial application of RF MEMS capacitive switches. The effect arises from the presence of the dielectric film (Fig.1a), which limits the displacement of the suspended electrode and determines the device pull-down state capacitance. Macroscopically, the dielectric charging is manifested through the shift (Fig.1b) (Re...

background & importance: acute epidural hematoma is a very rare complication of ventriculoperitoneal shunt insertion. the insertion of a ventriculoperitoneal shunt can cause sudden decompression of the brain, subsequent to which epidural hematoma occurs due to csf drainage. to our knowledge, there are only a few cases of acute epidural hematoma in the literature which required acute evacuation....

infections of the cerebrospinal shunts and other neurosurgical structures are not uncommon in the clinical practice. these infections are mostly clinical emergencies carrying negative prognostic impacts on the patients as well as spending healthcare resources. the low pathogenicity nature of some implicated pathogens results in minimal physical signs that may complicate the diagnosis and mislea...

Capacitive sensing is becoming a popular technology to replace optical detection methods and The FDC1004's basic operation of capacitive sensing implements a switched capacitor circuit to transfer interface.ti.com. Find design resources for Capacitive Sensing. I2C Interface (8) using the AT42QT1060-MMU ('QT1060') 6 Channel QTouchTM Integrated Circuit (IC). Silicon Labs' 8and 32-bit capacitive t...

Keywords: RF MEMS capacitive switch Dielectric charging Silicon nitride PECVD method a b s t r a c t The present paper aims to provide a better insight to the electrical characteristics of silicon nitride films that have been deposited with PECVD method under different conditions. The effect of film thickness, substrate temperature and the frequency that produces the plasma in PECVD method on t...

A new dual-coupled inductor (CI) single-switch high step-up dc–dc topology featuring power density is proposed in this study. Various capacitive transfer methods, as well inductive techniques, are utilized to act a more efficient interface between the input and load. Three ports output terminal employed distribute overall voltage, diminish voltage ripple high-voltage gain ratios, decrease stres...

2. CAPACITIVE SOLUTIONS This paper reviews differential implementations of threshold logic gates, detailing two classes of solutions: capacitive (switched capacitor and floating gate), and conductance/current. The concept underlying capacitive TLGs is the use of an array of capacitors to implement the weighted sum of inputs. The idea was introduced as early as 1966 [6]. Capacitive TLGs can be c...