480 Result(s)
within
Qi** Zhai
Nanotechnology
-
Article
Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres: A highly efficient catalyst for the hydrogenation of 4-nitrophenol
Highly dispersed Pd/N-doped carbon dots (Pd/NCDs) were successfully immobilized in the mesoporous channels of amino-functionalized dendritic mesoporous silica nanospheres (NMS). The synthesized Pd/NCDs@NMS cat...
-
Article
Open AccessEndothelial cells-derived exosomes-based hydrogel improved tendinous repair via anti-inflammatory and tissue regeneration-promoting properties
Tendon injuries are common orthopedic ailments with a challenging healing trajectory, especially in cases like the Achilles tendon afflictions. The healing trajectory of tendon injuries is often suboptimal, le...
-
Article
Effect of Ball Milling Time on Microstructure and Hydrogen Storage Properties of Nd5Mg41Ni Alloy
Mg-based alloys must be dehydrogenated at high pressure and temperatures, limiting their practical application. In this paper, Nd5Mg41Ni alloy was prepared by vacuum melting, and the as-cast alloy was ball milled...
-
Article
Open AccessA programmable topological photonic chip
Controlling topological phases of light allows the observation of abundant topological phenomena and the development of robust photonic devices. The prospect of more sophisticated control with topological phot...
-
Article
Facile preparation of cobalt doped ZnO hierarchical structures for enhanced triethylamine gas sensing performance
In this work, the Co doped ZnO (CZO) hierarchical structures were synthesized via hydrothermal approach at 100 °C. The results of characterization illustrated that the products were assembled by large quantiti...
-
Article
Hot Tearing of Fe-18Mn-0.6C-2.6Al High Manganese Steel
Fe-Mn-C-Al high manganese steel has a large tendency to hot tearing, making it difficult to continuously cast and even leading to steel leakage accidents. In this paper, the effects of cooling rate and strain ...
-
Article
Detection of ascorbic acid by persistent luminescent nanoparticles based on CoOOH nanosheets modification
Persistent luminescent nanomaterials (PLNPs) Zn0.8Ga2O4: Cr3+, Zr3+ with high brightness and good dispersion were prepared by hydrothermal method. The PLNPs were used as luminescent units, and CoOOH nanosheets we...
-
Article
Precipitation Behavior of TiN During the Solidification of High-Titanium Steel
TiN is an inevitable inclusion in high-titanium steel, and controlling its size and distribution is the key to balancing the wear resistance and service life of high-titanium steel. In this paper, the precipit...
-
Article
Acid wet blasting method for fabricating superhydrophobic aluminum surface with micro-nano composite structures
A superhydrophobic surface is an ideal choice to enhance the corrosion resistance of aluminum (Al) and Al-based alloys which are widely used in various industrial fields. However, there are limitations in the ...
-
Article
Liquid-phase epitaxial layer by layer brushing fabrication of metal-organic frameworks films
Development of metal-organic framework (MOF) films is of great importance to expand their applications. Herein, we report a facile and universal method of liquid-phase epitaxial (LPE) layer by layer (LBL) brus...
-
Article
Numerical Simulation of Melt Flow, Heat Transfer and Solidification in Final Solidification Zone of Bloom Continuous Casting with Vertical Linear Electromagnetic Stirring
In this study, a novel technique of Vertical Linear Electromagnetic Stirring (V-LEMS) was proposed and applied in the final solidification zone of the 260 mm × 300 mm GCr15 bearing steel continuous casting (CC...
-
Article
Open AccessEfficient signal sequence of mRNA vaccines enhances the antigen expression to expand the immune protection against viral infection
The signal sequence played a crucial role in the efficacy of mRNA vaccines against virus pandemic by influencing antigen translation. However, limited research had been conducted to compare and analyze the spe...
-
Article
Open AccessMSC microvesicles loaded G-quadruplex-enhanced circular single-stranded DNA-9 inhibits tumor growth by targeting MDSCs
Myeloid-derived suppressor cells (MDSCs) promote tumor growth, metastasis, and lead to immunotherapy resistance. Studies revealed that miRNAs are also expressed in MDSCs and promote the immunosuppressive funct...
-
Article
Fibration of powdery materials
Non-destructive processing of powders into macroscopic materials with a wealth of structural and functional possibilities has immeasurable scientific significance and application value, yet remains a challenge...
-
Article
Open AccessMesoporous silica coated spicules for photodynamic therapy of metastatic melanoma
We report on the fabrication of mesoporous silicon dioxide coated Haliclona sp. spicules (mSHS) to enhance the delivery of the insoluble photosensitizer protoporphyrin IX (PpIX) into deep skin layers and mediate ...
-
Article
1T′-transition metal dichalcogenide monolayers stabilized on 4H-Au nanowires for ultrasensitive SERS detection
Unconventional 1T′-phase transition metal dichalcogenides (TMDs) have aroused tremendous research interest due to their unique phase-dependent physicochemical properties and applications. However, due to the m...
-
Article
A columnar multi-layer sliding triboelectric nanogenerator for water wave energy harvesting independent of wave height and direction
The ocean, with its highly variable and complex meteorological conditions, harbors enormous renewable resources. Triboelectric nanogenerators (TENGs), which possess unique advantages, show exciting prospects i...
-
Article
A Homogenization Technology for Heavy Ingots: Hot-Top Pulsed Magneto-Oscillation
We scaled up a previously developed method, known as Hot-top Pulsed Magneto-Oscillation (HPMO), to minimize crack, shrinkage-cavity, and macrosegregation in large ingots. Simulations on electromagnetic field, ...
-
Article
Effect of P–Si Binary System on the Formation Mechanism of AZ91D MAO Coating
To enhance the corrosion resistance of magnesium alloy while improving its surface roughness to enhance organic bonding, the single pulse micro-arc oxidation treatment was conducted on magnesium alloy specimen...
-
Article
Open AccessElectronic structure of superconducting VN(111) films
Vanadium nitride (VN) is a transition-metal nitride with remarkable properties that have prompted extensive experimental and theoretical investigations in recent years. However, there is a current paucity of e...
