Due to the rapid development and potential applications of iron(Ⅲ)-alginate(Fe-Alg)microgels in biomedical as well as environmental engineering,this study explores the preparation and characterization of spherical Fe...
详细信息
Due to the rapid development and potential applications of iron(Ⅲ)-alginate(Fe-Alg)microgels in biomedical as well as environmental engineering,this study explores the preparation and characterization of spherical Fe-Alg microgels using droplet microfluidics combined with an external ionic crosslinking *** study focused on the role of Fe^(3+)and examined its effects on the physical/chemical properties of microgels under different ionic conditions and reduced or oxidized *** pH-dependent release behavior of Fe^(3+)from these microgels demonstrates their potential biomedical and environmental ***,the microgels can exhibit magnetism simply by utilizing in situ oxidation,which can be further used for targeted drug delivery and magnetic separation technologies.
The Cooling Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR)was constructed to study nuclear physics,atomic physics,interdisciplinary science,and related *** External Target Facility(ETF)is locate...
详细信息
The Cooling Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR)was constructed to study nuclear physics,atomic physics,interdisciplinary science,and related *** External Target Facility(ETF)is located in the main ring of the *** gamma detector of the ETF is built to measure emitted gamma rays with energies below 5 MeV in the center-of-mass frame and is planned to measure light fragments with energies up to 300 *** readout electronics for the gamma detector were designed and *** readout electronics consist of thirty-two front-end cards,thirty-two readout control units(RCUs),one common readout unit,one synchronization&clock unit,and one sub-trigger *** using the real-time peak-detection algorithm implemented in the RCU,the data volume can be significantly *** addition,trigger logic selection algorithms are implemented to improve the selection of useful events and reduce the data *** test results show that the integral nonlinearity of the readout electronics is less than 1%,and the energy resolution for measuring the 60 Co source is better than 5.5%.This study discusses the design and performance of the readout electronics.
Ependymal cells line the wall of cerebral ventricles and ensure the unidirectional cerebrospinal fluid(CSF)flow by beating their motile cilia *** ependymal denudation or ciliary dysfunction causes ***,we report that t...
详细信息
Ependymal cells line the wall of cerebral ventricles and ensure the unidirectional cerebrospinal fluid(CSF)flow by beating their motile cilia *** ependymal denudation or ciliary dysfunction causes ***,we report that the deficiency of regulator of Gprotein signaling 22(RGS22)results in severe congenital hydrocephalus in both mice and ***,RGS22 is specifically expressed in ependymal cells within the *** conditional knock-out mice,we further demonstrate that the deletion of Rgs22 exclusively in nervous system is sufficient to induce ***,we show that Rgs22 deficiency leads to the ependymal denudation and impaired *** phenomenon can be attributed to the excessive activation of lysophosphatidic acid receptor(LPAR)signaling under Rgs22^(-/-)condition,as the LPAR blockade effectively alleviates hydrocephalus in Rgs22^(-/-)***,our findings unveil a previously unrecognized role of RGS22 in the central nervous system,and present RGS22 as a potential diagnostic and therapeutic target for hydrocephalus.
The dust-scattered stray light in an inner-occulted coronagraph mainly arises from dust particles on the surfaces of the objective *** to the random accumulation of dust on the lens surfaces,it is challenging to monit...
详细信息
The dust-scattered stray light in an inner-occulted coronagraph mainly arises from dust particles on the surfaces of the objective *** to the random accumulation of dust on the lens surfaces,it is challenging to monitor this type of stray light and no application can be used for its real-time monitor in the *** this study,we provide a system and method to overcome this issue,and these have been applied to the Spectral Imaging CoronaGraph (SICG) of the Chinese Meridian *** method is based on the relation between the sizes of dust particles and its stray light level at the imaging plane established in the laboratory and the relation between the real size of dust particles and the occupancies on the imaging *** monitor the stray light levels accounted for by dusts,one needs only an image of the objective lens that can be provided by the auxiliary imaging system that specially comes with *** tests show that the errors of the method are less or about 2%,giving a strong confidence in its *** provides a handy tool to monitor the dust level of the objective lens of SICG and has significantly improved the efficiency of the pipeline of stray light control.
Privacy-preserving computation realizes joint computation among multiple mutually distrustful participants while preserving the privacy of the computation,which has a wide range of applications in the data industry. I...
Privacy-preserving computation realizes joint computation among multiple mutually distrustful participants while preserving the privacy of the computation,which has a wide range of applications in the data industry. In the context of cryptography, privacy-preserving technologies refer to those that involve one or more of the following:multiparty computation (MPC), zero-knowledge proof(ZKP) and fully homomorphic encryption (FHE). We introduce these technologies below with machine learning applications as concrete examples.
Developing efficient electrocatalysts for selective nitrate contamination reduction into value-added ammonia is ***,heterostructured Co/CoO nanosheet arrays(Co/CoO NSAs)exhibited excellent Faradaic efficiency(93.8%)an...
详细信息
Developing efficient electrocatalysts for selective nitrate contamination reduction into value-added ammonia is ***,heterostructured Co/CoO nanosheet arrays(Co/CoO NSAs)exhibited excellent Faradaic efficiency(93.8%)and selectivity(91.2%)for nitrate electroreduction to ammonia,greatly outperforming Co NSAs.15N isotope labeling experiments and 1H nuclear magnetic resonance(NMR)quantitative testing methods confirmed the origin of the produced *** in situ Fourier transform infrared(FTIR)spectroscopy,online differential electrochemical mass spectrometry(DEMS)data and density functional theory(DFT)results revealed that the superior performances arose from the electron deficiency of Co induced by the rectifying Schottky contact in the Co/CoO *** electron transfer from Co to CoO at the interface could not only suppress the competitive hydrogen evolution reaction,but also increase energy barriers for by-products,thus leading to high Faradaic efficiency and selectivity of ammonia.
To investigate the adsorption characteristics of chitooligosaccharides in solution onto activated charcoal,we studied the optimal adsorption conditions and the adsorption mechanisms of the chitooligosaccharides onto a...
详细信息
To investigate the adsorption characteristics of chitooligosaccharides in solution onto activated charcoal,we studied the optimal adsorption conditions and the adsorption mechanisms of the chitooligosaccharides onto activated charcoal,which will greatly promote the application of activated charcoal in the chitooligosaccharides separation and *** studied the effects of particle size of activated charcoal,pH of solution,contact time,temperature,and initial concentration of chitooligosaccharides on the adsorption behavior in batch mode *** charcoal in fine particle size showed a high uptake of *** alkaline solution(pH 8–9)was the most favorable to the *** adsorption equilibrium after 60 min was established,which followed a pseudo-second-order kinetic *** adsorption capacity(Q_(max))reached 0.195 g/g(chitooligosaccharides/activated charcoal)at 298 *** adsorption was temperature-insensitive,and the adsorption isotherms could be best described by the Langmuir *** adsorbed on activated charcoal could be desorbed in 50%ethanol solution in combination with an acidic condition(pH 2),reaching desorption efficiency of 96.0%.These findings are of great significance for the production and purification of amino oligosaccharides including chitooligosaccharides using activated charcoal.
维普期刊数据库
同方期刊数据库
暂无评论