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Diacylglycerol acyltransferase 1 (DGAT1) catalyzes the acyl‐CoA‐dependent biosynthesis of triacylglycerol, the predominant component of seed oil. In some oil crops, including Brassica napus, the level of DGAT1 activity can have a substantial effect on triacylglycerol production. Structure–function insights into DGAT1, however, remain limited because of the lack of a three‐dimensional detailed structure...
A highly compact continuous-time transimpedance low-pass filter (TILPF) topology is proposed that achieves a low input impedance and a 2nd-order transfer function in a single stage. This is suitable to perform current-to-voltage conversion with a built-in filtering characteristic in a passive mixer based wireless receiver. A 4th-order Butterworth prototype is designed with a cascade of the proposed...
We investigated the genomic characteristics of 110 LX4 genotype strains of infectious bronchitis viruses (IBVs) isolated between 1995 and 2005 in China. The genome of these IBVs varies in size from 27596bp to 27790bp. Most IBV strains have the typical genomic organization of other gamacoronaviruses, however, two strains lacked 3a and 5b genes as a result of a nucleotide change within the start codon...
This paper provides a methodology for overall system level design of a high-power density inverter to be used for EV/HEV traction drive applications. The system design is guided to accommodate off-the-shelf SiC power modules in a planar architecture that ensures proper electrical, thermal, and mechanical performances. Bi-directional interleaved DC-DC boost structure and a three-phase voltage source...
This paper proposes a new discrete-time complex bandpass (DT CBP) filter topology in charge domain, only using switches, capacitors, input transconductors and non-overlapping 2-phase clock scheme. The proposed DT filter features better power-efficiency, reduced complexity and easier process-scaling compared to the conventional topologies. It has an inherent anti-aliasing sinc characteristic due to...
This paper proposes a new continuous-time (CT) MASH delta sigma (ΔΣ) modulator topology in which dual VCO-based quantizers are incorporated. The nonlinearity of both voltage-controlled oscillators (VCOs) caused by their nonlinear voltage-to-frequency (V-to-F) transfer curve are systematically suppressed without any calibration schemes. After the input voltage is directly digitized by a VCO-based quantizer...
High efficiency is one of the most important requirements for grid-connected photovoltaic (PV) systems. Power compensating concept promises high efficiency maximum power point (MPP) tracking and hence improves the efficiency of the whole PV systems. In this paper, the compensating concept in grid-connected PV systems with kinds of power architectures was summarized. It was found that even with the...
Wearable electronic devices are becoming inevitable part of life in this century. Traditional way of powering wearable electronics devices lies on batteries. As power requirements decrease for most wearable devices, it is feasible to harvest a useful amount of energy from a normal range of human activity. Researchers so far have investigated only one type of actuation techniques such as electromagnetic,...
Integrated magnetics (IM) has been widely used in power electronics systems. A method to design IM has been proposed systematically. The rule to decide whether three and more discrete magnetic components can be integrated together is also proposed in this paper. A half bridge with current doubler converter and a single IM component are taken as an example to demonstrate the practical application of...
Integrated magnetics (IM) has been widely used in power electronics systems. A method to design IM has been proposed systematically. The rule to decide whether three and more discrete magnetic components can be integrated together is also proposed in this paper. A half bridge with current doubler converter and a single IM component are taken as an example to demonstrate the practical application of...
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