In order to reduce post-harvest losses, the classification of fresh apples is crucial. Taking hierarchical transmission control system as object, research was carried out on verification bus network can flexibly expand motor equipment, stable and reliable operation motor, accuracy Apple's classification. Combine Labview virtual instrument technology realize design based Controller Area Network ...

It was recently shown that capture of HIV-1 by DC-SIGN-expressing cells and the subsequent transmission of HIV to CD4+ T-lymphocytes can be prevented by carbohydrate-binding agents (CBAs), whereas polyanions were unable to block virus capture by DC-SIGN. In this study, we could show that a short pre-exposure of HIV-1 to both mannose- and N-acetylglucosamine (GlcNAc)-specific CBAs or polyanions ...

BACKGROUND Routine HIV testing is an essential approach to identifying undiagnosed infections, linking people to care and treatment, and preventing new infections. In Washington, DC, where HIV prevalence is 2.4%, a combination of routine and targeted testing approaches has been implemented since 2006. METHODS We sought to evaluate the cost effectiveness of the District of Columbia (DC) Depart...

<p>This paper introduces a high-performance zero-voltage-switching (ZVS) boost converter, which is capable to operate under different load currents. By utilizing matching network, the proposed topology can achieve ZVS over wide range of input voltages. Due switching loss minimized, circuit suitable for operation at frequencies on order several MHz. Steady-state analysis and detailed descr...

The generation of offshore wind power is less predictable. This can cause the overload of offshore DC transmission system and thus requires the curtailment of wind power. To reduce the amount of wind power curtailment, a method of optimising DC power flow using DC power flow controller (DC-PFC) is proposed. The analytical expression of coordinating DC-PFCs and converters in controlling the powe...

DC-DC converters have been applied to industrial applications widely during the past few decades. With rapid development of technology, negative output (N/O) dc-dc converters play an important role in the industrial fields, such as regenerative braking system (RBS) of DC motors for hybrid electric vehicles, signal generator and data transmission interface, neutral point clamping power electroni...

BACKGROUND Washington DC has a high burden of HIV with a 2.0% HIV prevalence. The city is a national and international hub potentially containing a broad diversity of HIV variants; yet few sequences from DC are available on GenBank to assess the evolutionary history of HIV in the US capital. Towards this general goal, here we analyze extensive sequence data and investigate HIV diversity, phylod...

Considering that current voltage transformer models of electrical multiple units (EMUs) are narrow-band or models, this paper introduces a wide-band model EMU transformers based on the vector fitting method, circuit synthesis theory and black-box theory. The admittances from 30 kHz to 5 MHz measured by network analyzer, branch in pi-type equivalent calculated according equation two-port circuit...