Purpose: Nanomaterial-based drug-delivery systems allowing for effective targeted delivery of smallmolecule chemodrugs to tumors have revolutionized cancer therapy. Recently, as novel nanomaterials with outstanding physicochemical properties, boron nitride nanospheres (BNs) emerged a promising candidate drug delivery. However, poor dispersity and lack tumor targeting severely limit further applications. In this study, cell–membrane biomimetic BNs were designed anticancer Methods: Cell...

Due to the rapid development of renewable energy (RE), power transmission and transformation equipment some gathering stations are congested especially at noon. Therefore, an operation simulation method considering storage system (ESS) is proposed, evaluation indices source-network-storage given. This paper proposes two solutions alleviate contradiction between utilization congestion: expanding configuring ESS. To compare rate investment cost grid, schemes key station ESS under condition...

Under mild conditions and without the need of inert gas protection, a Rh-catalyzed rearrangement trans-divinylcyclopropanes to form 1,5-disubsituted 1,4-cycloheptadienes has been developed is disclosed here. This reaction can expedite synthesis challenging seven-membered carbocycles.

The development and popularization of electric vehicles (EV) are inseparable from the construction charging stations, but EV chargers nonlinear loads, which will bring harmonic pollutions to power grid. In this case, research on problems station has practical significance. paper, model a single charger were established. variation law ratio (HRI), total distortion (THD) demand (TDD) current with number analyzed under same or different powers respectively. Then, mechanism counteraction among...

Report here is a Rh-catalyzed [4+3]/[4+1] cycloaddition of diene-vinylcyclopropanes (diene-VCPs) and carbon monoxide to access compounds with angular 5/7/5 tricyclic skeleton found in natural products. The reaction has broad scope further transformation the cycloadduct was also investigated. How this occurs why its competing [4+3] disfavored have been investigated computationally.

With the development of power electronics and popularity renewable energy, AC/DC distribution network will be an important form future network. This paper establishes reliability model converter station, DC transformer circuit breaker. Considering distributed generations, hybrid is evaluated by Sequential Monte Carlo Method. Taking radiant structure as example, AC are analyzed compared. The result shows that three indexes higher than As a high failure rate fault repair time key equipment in...

Considering the combined cooling, heating and power (CCHP)supply, grid connected microgrid can utilize clean energy such as wind energy, photovoltaic waste heat recovering of micro-gas turbine after generation, supply cooling to users, so it has better saving emission reduction effect. In this paper, an optimal economic operation model with net present cost optimization objective is established for system consisting turbine, cell, boiler, storage battery electric load. The configuration...

Contemporary distribution networks can be seen with diverse dispatchable and nondispatchable energy resources. The coordinated scheduling of these resources, together provide several technoeconomic social benefits. Since battery storage systems (BESSs) microturbine units (MT units) are capital-intensive, a thorough investigation their under the economic criterion will challenging task while considering dynamic electricity prices uncertainties renewable power generation load demand. This...

The torque and flux ripple of traditional DTC control PMSM is large, due to the lack adaptive system, change system parameters has a great impact on steady transient performance motor speed. Based algorithm, parameter identification backstepping algorithm proposed in this paper. Because controller used replace PI hysteresis controller, steady-state obviously improved. At same time, designed, which can effectively suppress influence changes speed performance. simulation results verify...

The access of microgrid will directly affect the voltage quality and operation level medium-voltage distribution network, resulting in change power flow direction formation multi-source network. Based on reliability economy, this paper quantitatively evaluates influence typical supply modes determines optimal location capacity, proposes a construction mode network suitable for access. Through study, it is concluded that connected to radial overhead lines can significantly improve supply,...

The different structures of AC/DC hybrid distribution network with distributed generation are introduced. Selecting the appropriate evaluation index, establishing comprehensive index system generation, using a method based on fuzzy entropy weight to compare and analyze schemes, providing reference for future selection network.

The concise total synthesis of ngouniensines is reported, in which 2-Me-tryptamine undergoes sequential C–H functionalization with different aldehydes to afford the azepino[4,5- b ]indole core and an exocyclic conjugated alkene, respectively.

Under mild conditions and without the need of inert gas protection, a Rh-catalyzed rearrangement

Fault restoration on regional power grids is a multi-objective, multi-constrained and complex optimization problem. A network fault system that can be applied in on-line mode researched realized. An analytical model based subsystem-switch for built. Based the model, adopting GA, this recover electricity rapidly after fault. The proposed has been put into operation network, validity of verified.

When a turn to fault takes place in dry-type iron-core reactor, the circulating current shorted turns is ten times or tens of larger than rated phase current, which could cause insulation and structure damage windings. However, changes terminal voltage are very small, thus they cannot be regarded as reliable criterion protection. In this paper, characteristics magnetic field distribution reactor analyzed for detection its algorithm further proposed. To investigate effects different numbers...

This paper proposes a distributed generation capacity planning method for AC/DC hybrid distribution network based on different functions of energy storage. The objective function is established the purpose economic optimization. According to application scenarios, storage divided into two functions: standby power supply and peak shaving valley filling. Two optimization models are from these aspects. Considering quality grid, reliability introduced as constraint. complicated calculation...

Introduction: The urban distribution system plays a crucial role in efficient power within areas. increasing frequency and intensity of extreme events recent years pose significant challenges to the reliable operation systems. While extensive research focuses on emergency control strategies for large-scale grids, there is need targeted attention address arising when becomes isolated from superior grid due events. Methods: This paper aims enhance system's resilience by investigating...

The transition from traditional AC distribution system to future mature AC/DC hybrid mode is an effective means solve the challenges of high penetration distributed energy, diversification energy types, requirements power quality and supply reliability.AC / DC can be used in many scenarios by virtue its technical advantages. This paper analyzes typical application network perspective "source load". Combined with research status network, this introduces planning method three aspects: paper,...

With the rapid development of rural economy and continuous increase in electricity consumption, problems high energy multiple failures, weak loading, poor environmental protection power grids have become increasingly prominent, which are incompatible with green concept advocated by country. In order to meet needs economic respond national dual-carbon target strategy, this article starts analyzing status quo grids, studying future direction proposing a new grid construction plan based on...

Abstract Currently, existing location methods are difficult to adapt increasingly distributed generation (DG), owing the rapid growth of accessing scale and uncertainty time space in new energy generation. In this paper, a novel combined Greedy algorithm (GA)/particle swarm optimization (PSO) is proposed for optimal DG on distribution systems. The impact different access locations power sources network loss voltage analyzed. Considering minimum stability, permeability range modes proposed....

The marine energy reserves available for development in China are huge, and the coastal areas highly concentrated China's power load area, so research of is great significance. Aiming at problem large fluctuation poor predictability offshore wind generation, a combined generation system tidal current proposed. This paper analyzes time space complementary characteristics energy, designs integrated platform, establishes model based on DC bus network, determines evaluation index system. Based...