In this paper, we perform unbiased structure searches combined with first-principles calculations to predict the stable structures and possible superconductivity of ErHn (n = 4~6) under pressures 50~300 GPa. Two novel compounds, ErH4 ErH6, are identified as thermodynamically dynamically above 50 GPa; ErH6 can stabilize in clathrate I4/mmm Im3¯m space groups, respectively. An analysis electronic...

Glycoinositol-phospholipids (GIPLs) are the major glycolipid class and prominant surface antigens of leishmanial parasites. The GIPLs from four serologically distinct Old World strains of Leishmania were characterized to determine inter- and intra-specific differences in these glycolipids. These studies showed that: (1) the major GIPLs of Leishmania topica (LRC-L36) and Leishmania aethiopica (L...

Agrowing number of semiconductor technologies are being applied to RF power transistor applications. These technologies include Si LDMOS FET, SiGe HBT, InGaP HBT, GaAs MESFET, AlGaAs pHEMT, SiC MESFET and AlGaN/GaN HEMT. The dependencies of linearity and efficiency of such technologies are often common, such as transconductance derivatives, capacitance variations, breakdown effects and parasiti...

The realization of the Tow–Thomas (TT) circuit using the Operational Transresistance Amplifier (OTRA) is reviewed. The circuit employs two OTRA, and all passive elements are floating as the original Tow–Thomas circuit. The Current Conveyor (CCII) TT circuits are reviewed next. The progress in the realization of the TT circuit using CCII is demonstrated clearly by summarizing eight different cir...

abstract background: today, the rate of surgeries is increasing, but surgeries are canceled due to various reasons. unexpected cancellation of surgeries not only results in disorder in the operating room schedule, but also causes stress for patients and their family and increases costs. we determined the number and causes of surgery cancellations and areas for improvement. materials and methods...

Understanding of recently reported putative close-to-room-temperature superconductivity in C–S–H compounds at 267 GPa demands a reproducible synthesis protocol as well knowledge the compounds' structure and composition. We synthesized with various carbon compositions high pressures from elemental C methane CH4, sulfur S, molecular hydrogen H2. Here, we focus on using these allow straightforward...

Although in-band full-duplex (IBFD) communication can theoretically double the spectral efficiency compared with conventional wireless technologies, it cannot be realized without reducing a high-power self-interference (SI) signal. Since SI signal is affected by nonlinear distortion of radio-frequency (RF) circuits its own terminal, cancellation systems capable removing distorted have been acti...