Abstract It is still very challenging to obtain colorful and long‐afterglow room‐temperature phosphorescent (RTP) materials from pure organic polymers. Herein, it found that chitosan (CS), a natural polymer, not only has its own RTP, but also reacts with different molecules multicolor, RTP material. CS can emit lifetime of 48 ms. In addition, rich in amino groups, grafting onto by an amidation reaction modulate colors phosphorescence series derivatives. The obtained polymer films have...

Here, we constructed a nanostructured pH/redox dual-responsive supramolecular drug carrier with both aggregation-induced emission (AIE) and Forster resonance energy transfer (FRET) effects, which enabled selective release monitoring delivery processes. Taking the hyperbranched polyamide amine (H-PAMAM) intrinsic AIE effects as core, poly(ethylene glycol) (PEG) was bridged on its periphery by dithiodipropionic acid. Then, through host–guest interaction of PEG α-cyclodextrin, nanoparticles...

Abstract An antibacterial polymer peptidopolysaccharide (COS‐AMP) that integrates and detection functions is constructed with a simple synthetic method. The COS‐AMP by simulating the structure of peptidoglycan bacterial cell wall chitooligosaccharide intrinsic aggregation‐induced emission (AIE) effect as main chain, well peptide grafted onto its amino group. Based on AIE excitation‐dependent fluorescence COS‐AMP, it tentatively applied to multicolor imaging quantification bacteria. This...

The variation of aerosols, especially dust aerosol, in time and space plays an important role climate forcing studies. Aerosols can effectively reduce land surface longwave emission re-emit energy at a colder temperature, which makes it difficult to estimate downwelling radiation (DSLR) with satellite data. Using the latest atmospheric radiative transfer code (MODTRAN 5.0), we have simulated outgoing (OLR) DSLR under different types profile conditions. results show that aerosol has obvious...

As an important component in the surface radiation budget, upwelling longwave (SULR) is outcome of land energy exchange and mainly represents capability thermal from Earth. Existing satellite-derived SULR products are too coarse to support high-resolution numerical models, their accuracy needs be improved. In this study, equivalent temperature introduced through which a "split-window" atmospheric correction algorithm developed for MODIS data estimate instantaneous clear-sky SULR. It simple...

Aimed at the special requirements of Electric Vehicle, 1200V/300A-IGBT module has been designed, packaged. The packaging structure adopts 2 in 1 type. dimension is 62*108mm. technological process designed according to characters processing equipments laboratory, and some key processes, such as wire bonding soldering are optimized. Based on optimized parameters, samples Finally, these had implemented comprehensive test. test results show performances packaged IGBT meet application requirements.

Ambient irradiance is pivotal to be considered for field measurements of soil emissivity with Portable Fourier Transform Infrared Spectro-radiometer (102F). Usually, a diffusely reflecting gold plate which has near-Lambertian behavior was used acquire the ambient irradiance. Because and are not synchronized, It can generate errors on determination emissivity, especially erratic cloud instantaneous wind make sharp change. In this study, four conditions about radiances were 30% underestimated,...

The variation of aerosols, especially dust aerosol, in time and space plays an important role climate forcing studies. Aerosols can effectively reduce land surface longwave emission re-emit energy at a colder temperature, making estimation downwelling radiation (DSLR) with satellite data difficult. Using the latest atmospheric radiative transfer code (MODTRAN 5.0), we simulate outgoing (OLR) DSLR under different profile conditions. results show that aerosol has obvious...

Thin cirrus clouds can reduce land surface long-wave transmission and re-emit energy at a colder temperature thus making it difficult to estimate downwelling longwave radiation (DSLR) from satellite data. In this study, simulation database is established in terms of radiances observed the top atmosphere (TOA), cloud optical thickness (COT), water vapor content (WVC) height bottom (HCB) DSLR. And back propagation (BP) artificial neural network (ANN) was used DSLR remotely sensed data for...

Based on analyzing the influence of atmospheric water vapor content (WVC) coefficients determination in generalized split-window (GSW) algorithm, it is found that are relatively monotonic variable with increasing WVC, which were proposed to determine as implicit linear functions. To improve land surface temperature (LST) retrieval accuracy GSW WVC an explicit parameter this work. The results show method can acquire high accurate LST if known. root mean square errors (RMSEs) between actual...

Double-sided cooling IGBT module is a kind of package structure which can increase the power density effectively, improve reliability in some special circumstance. In view requirements packaging process for double-sided module, mathematical model soldering about Three-dimensional has been built, and simulated by finite element software. Meanwhile, reflow curve determined, optimized. Results show that void rate each layer less than 3%. The optimized parameters progress meet requirement module.

In recent years, with the widespread application of Transformer in computer vision, Transformer-based object tracking algorithms have made some progress terms accuracy. However, large computation, high resource consumption, and slow inference speed these severely limit their practical applications. Specifically, struggle to meet real-time demands resource-limited scenarios such as mobile devices drones. Therefore, this paper proposes a pure Siamese-based, lightweight algorithm based on...

A weight and diameter monitoring platform of wire icing has been designed, which helps the weather forecasters gain whole real-time process continually visually. The provides convenience for forecasters.

In this study, a new method was proposed to retrieve aerosol optical depth at 0.55μm (AOD <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.55μm</sub> ) using MODIS images with the second simulation of satellite signal in solar spectrum model (6S). Provided that surface features have little change short period, reflectance ratios between visible and infrared bands pixel-by-pixel can be calculated directly image on clean day when is too small...