Lithium ion capacitors with liquid electrolyte are prone to leakage, combustion, explosion and other dangerous accidents. To solve these problems, the solid gel separator prepared by polyvinylidene fluoride - six fluoropropene (PVDF-HFP) is used in this work improve safety stability of lithium supercapacitors. The PVDF-HFP based was replace commercial capacitor. solid-state supercapacitor match...

In this paper, we compare and analyze the signals of acoustic emission (AE) sensor, high-frequency current transformer (HF-CT) and capacitive coupled (CC) sensor inspection methods when they are used to detect the partial discharge (PD) in gas isolation substations (GIS). The PD location feasibility of the AE method is also studied. In general, the leakage currents are measured by using the HF-...

Practically, clocking system like flip-flop (FF) consumes large portion of total chip power. In this paper, a novel low-power pulse-triggered flip-flop (FF) design is presented. Pulsetriggered FF (P-FF) has been considered as a popular alternative to the conventional master –slave based FF in the applications of high speed. First, a simple two-transistor AND gate design is used to reduce the ci...

Four consecutive cases of a colonic stricture following a da Vinci robot-assisted ultra-low anterior resection (LAR) with coloanal anastomosis and diverting ileostomy for the treatment of rectal cancer are reported. The colonic strictures developed after early proximal colonic ischemia without anastomotic site leakage or disruption. All patients were treated with preoperative chemoradiation the...

This paper presents a reciprocating air microcompressor with a piston diameter of 1 mm. A microcompressor construction is proposed aiming at simple fabrication with lots of space for installing inlet and outlet ports. The inlet port of the microcompressor does not have a moving valve, while the outlet port is equipped with a miniature reed valve. The compression process was numerically modelled...

In this paper a dual voltage CMOS low power output pad is presented. The pads are the interface circuits between the core and the package pins of any integrated circuit. The power consumption of these pads it is a very important parameter for the global power consumption of the integrated circuit that includes them. The proposed pad includes a pre-driver and a final output stage including ESD(e...

Much of on-chip storage is devoted to transient, often short-lived, data. Despite this, virtually all on-chip array structures use sixtransistor (6T) static RAM cells that store data indefinitely. In this paper we propose the use of quasi-static four-transistor (4T) RAM cells. Quasi-static 4T cells provide both energy and area savings. These cells have no connection to Vdd thus inherently provi...

An earlier developed, first principles hydrodynamic model of gas-fluidized beds has been employed to study theoretically bubble formation at a single orifice in a two-dimensional bed. For several orifice discharge rates, theoretically predicted bubble sizes, formation times and shapes have been compared with experimental data obtained from triggered photographs. Besides, the present experimenta...

This paper presents the development and validation of a simulation model of an injection scroll compressor that can be used for optimization of a heat pump system for electric vehicles. The modeling considered the effects of refrigerant leakage and suction gas heating. The simulation model solved continuity and energy conservation equations using 4th Runge-Kutta scheme to predict the pressure a...

The selection of a treatment approach for a 2-year-old child with penetrating vertebral and spinal trauma, complicated by meningitis, is presented here. This pathology occurs rather rarely, which complicates the development of a uniform approach for the management of such patients. After surgical treatment of the wound in the lumbar region at L5-S1 level due to trauma, the leakage of a transpar...