A5100399995- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Boron and Carbon Nanomaterials Research
- Plasmonic and Surface Plasmon Research
- Astronomical Observations and Instrumentation
- Asymmetric Hydrogenation and Catalysis
- GaN-based semiconductor devices and materials
- Diamond and Carbon-based Materials Research
- Astronomical and nuclear sciences
- Optical Coatings and Gratings
- Metal and Thin Film Mechanics
- Gold and Silver Nanoparticles Synthesis and Applications
- Photonic and Optical Devices
- MXene and MAX Phase Materials
- Healthcare and Venom Research
- Innovative Educational Techniques
- Bacterial biofilms and quorum sensing
- Nanomaterials for catalytic reactions
- Atmospheric Ozone and Climate
- Innovative Microfluidic and Catalytic Techniques Innovation
- Solar and Space Plasma Dynamics
Shandong University
2016-2025
Shenyang Ligong University
2025
China Jiliang University
2025
Chongqing University
2024
Fuyang City People's Hospital
2023
Shandong Transportation Research Institute
2022
State Key Laboratory of Crystal Materials
2003-2021
State Key Laboratory of Microbial Technology
2019-2021
Qingdao Binhai University
2021
Chungbuk National University
2020
Abstract High precision CCD observations of six totally eclipsing contact binaries were presented and analyzed. It is found that only one target an A-type binary (V429 Cam), while the others are W-type ones. By analyzing times light minima, we discovered two them exhibit secular period increase three manifest long-term decrease. For V1033 Her, a cyclic variation superimposed on was discovered. comparing Gaia distances with those calculated by absolute parameters 173 binaries, distance can be...
The photometric and spectroscopic investigations of ten contact binaries were presented for the first time. It is discovered that mass ratios all targets are smaller than 0.15, they extremely low ratio binaries. Seven them deep binaries, two medium while only one a shallow system. Five show O'Connell effect, dark spot on components can lead to good fit asymmetric light curves. orbital period studies reveal exhibit long-term changes, six increasing, others shrinking. LAMOST spectra analyzed...
Implant-associated infections (IAI) are great challenges to medical healthcare and human wellness, yet current clinical treatments limited the use of antibiotics physical removal infected tissue or implant. Inspired by protein/membrane complex structure its generation reactive oxygen species in mitochondria respiration process immune cells during bacteria invasion, we herein propose a metal/piezoelectric nanostructure embedded on polymer implant surface achieve efficient piezocatalysis for...
Abstract We performed new photometric and spectroscopic studies on six W UMa-type eclipsing binaries (V342 UMa, LX Leo, V1062 Her, V801 And, 1SWASP J165649.13+402738.4 V1067 Her). From orbital period analysis, V342 UMa Leo show continuous decrease with a rate of -2.11(±0.06) × 10−7 d yr−1 -6.02(±0.13) 10−8 yr−1, respectively. Another four targets cyclic variation, which could be caused by the light-trave-time effect via third body. In addition, using spectral subtraction technique, we...
Due to the increase in number of vehicles and complexity parking spaces, space detection technology has emerged. It is capable automatically identifying vacant spaces lots or on streets, delivering this information drivers management systems real time, which a significant impact improving urban efficiency, alleviating traffic congestion, optimizing driving experience, promoting development intelligent transportation systems. This paper firstly describes research significance its background,...
The brown planthopper (Nilaparvata lugens) is an insect pest of rice, which mainly feeds on the phloem sap leaf sheath. RNA interference (RNAi) has application prospects in control, but it necessary to select target genes and design suitable dsRNA fragments for RNAi so that can achieve effective control avoid risks non-target organisms. NlAtg3 a key protein autophagy pathway N. lugens. Three kinds gene (dsNlAtg3-474×1, dsNlAtg3-138×3 dsNlAtg3-47×10) were designed compare efficiency...
The Pediatric Quality of Life Inventory (PedsQL) is widely used instrument to measure pediatric health-related quality life (HRQOL) for children aged 2 18 years. purpose the current study was investigate feasibility, reliability and validity Chinese mandarin version PedsQL 4.0 Generic Core Scales 3.0 Cancer Module in a group with cancer.The Genetic were administered cancer (aged 5-18 years) parents such 2-18 years). For comparison, survey on demographically group-matched sample general...
The period distribution of contact binaries exhibits a very sharp short cut-off at 0.22 d. In order to provide valuable information on this limit, we observed 10 totally eclipsing with orbital periods near cut-off. By detailed analysis using the w-d code, determined that two these systems are A-subtype while others W-subtype and all targets show shallow configurations. Half exhibit stellar spot activity four them have third light. A statistical work well-studied ultrashort (USPCBs) was...
An anion template generally exerts an inductive effect by forming a fully covered outer shell around it; however, partial coverage to form entity with either anisotropic structure or regioselective distribution of functional groups, called the Janus cluster, is still challenging. attempt at creating asymmetric core–shell hybrid structures using high-symmetry Preyssler polyoxometalate (POM) as and [Ag(tBuC≡C)]n generate resulted in {[K(H2O)HP5W30O110]@Ag43(tBuC≡C)29(CN)(CH3CN)(H2O)}·4CH3CN...
The cut-off mass ratio is under debate for contact binaries. In this paper, we present the investigation of two binaries with ratios close to low limit. It found that VSX J082700.8+462850 (hereafter J082700) and 1SWASP J132829.37+555246.1 J132829) are both less than 0.1 ($q\sim0.055$ J082700, $q\sim0.089$ J132829). J082700 a shallow binary degree $\sim$19%, J132829 deep system fillout factor $\sim$70%. $O-C$ diagram analysis indicated systems manifest long-term period decrease. addition,...
Multi-band photometric observations of eleven totally eclipsing contact binaries were carried out. Applying the Wilson-Devinney program, solutions obtained. There are two W-subtype systems, which CRTS J133031.1+161202 and J154254.0+324652, rest systems A-subtype systems. J154254.0+324652 has highest fill-out factor with 94.3$\%$, lowest object is J155009.2+493639 only 18.9$\%$. The mass ratios all less than 0.1, means that they extremely low ratio binary We performed period variation...
Hydrogen sulfide (H2S) has been proposed to have various physiological functions, and it may function through reactive sulfane sulfur. Since the two sulfur forms often coexist, they are normally considered interchangeable. Here, we characterized production of H2S in Escherichia coli MG1655 found that not readily They primarily produced from L-cysteine via different enzymes. L-Cysteine desulfhydrases consumed directly generated H2S. The was mainly lost evaporation into gas phase, as E. does...
The bis(silylene)-based SiC(sp3)Si pincer ligand N,N′-bis(LSi:)dipyrromethane [SiCH2Si] (L1; L = PhC(NtBu)2) with a C(sp3) atom anchor was synthesized, and its coordination chemistry to iron studied. Two novel hydride complexes, [SiCHSi]Fe(H)(N2)(PMe3) (1) [SiCHSi]Fe(H)(PMe3)2 (2), were synthesized in the reaction of L1 Fe(PMe3)4 via C(sp3)–H bond activation under different inert atmospheres (N2 argon). To best our knowledge, 1 2 are first examples hydrido complex produced through bond. At...
In this paper, we present the first light curve synthesis and orbital period change analysis of nine contact binaries around short limit. It is found that all these systems are W-subtype binaries. One them a medium system while others shallow ones. Four manifest obvious O'Connell effect explained by dark spot or hot on one component stars. Third was detected in three systems. By investigating variations, four targets display secular decrease exhibit long-term increase. The more likely caused...
Prostate carcinoma causes a great number of deaths every year; therefore, there is an urgent need to find new drug candidates treat advanced prostate cancer. Isobavachalcone (IBC) the chalcone composition Psoralea corylifolia Linn used in traditional Chinese medicine. Although IBC demonstrates potent anticancer efficacy numerous types human cancer cells, cellular targets have not been fully defined. In our study, we found that may induce reactive oxygen species- (ROS-) mediated apoptosis via...
The Kepler-9 system harbors three known transiting planets. holds significant interest for several reasons. First, the outer two planets exhibit a period ratio that is close to 2:1 orbital commensurability, with attendant dynamical consequences. Second, both lie in planetary mass "desert" generally associated rapid gas agglomeration phase of core accretion process. Third, there exist attractive prospects accurately measuring sky-projected stellar spin-orbit angles as well mutual inclination...
Sulfane sulfur, such as inorganic and organic polysulfide (HSn− RSn−, n > 2), is a common cellular component, produced either from hydrogen sulfide oxidation or cysteine metabolism. In Pseudomonas aeruginosa PAO1, LasR quorum sensing master regulator. After binding its autoinducer, binds to target DNA activate the transcription of suite genes, including virulence factors. Herein, we report that production sulfane sulfur were positively correlated in P. was able modify LasR, which...
Porous polymer scaffolds are essential materials for tissue engineering because they can be easily processed to deliver stem cells or bioactive factors. However, made of synthetic polymers normally lack a cell-material interface and undergo burst release growth factors, which may hinder their further application in engineering. In this paper, metal-phenolic network (MPN) was interfacially constructed on the pore surface porous poly(dl-lactide) (PPLA) scaffold. Based molecular gating property...
ABSTRACT Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were obtained between November 2020 and 2021. To determine stellar atmospheric parameters, a spectral image was taken with 2.16 m telescope at National Astronomical Observatory of China (NAOC). 4002-2628-1 is low-amplitude (about 0.15 mag Vband) short-period (0.3670495 d) contact total secondary eclipse. Intrinsic light curve variations reversal O’Connell effect are detected in curves, which may be due...
Abstract Eclipsing binaries (EBs) play an important astrophysical role in studying stellar properties and evolution. By analyzing photometric data the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Medium-Resolution Survey field, R.A.: 23 h 01 m 51 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover> <mml:mrow> <mml:mo>.</mml:mo> </mml:mrow> <mml:mi mathvariant="normal">s</mml:mi> </mml:mover> </mml:math> 00, decl.: +34...
New photometric data of EQ Tau observed in 2010 and 2013 are presented. Light curves obtained 2000 2004 by Yuan & Qian 2001 Yang Liu, together with our two newly determined sets light curves, were analyzed using the Wilson–Devinney code. The five exhibit very obvious variations, implying that show a strong O'Connell effect. We found is an A-type shallow contact binary degree f = 11.8%; variable dark spots on primary component also observed. Using 10 new times minimum light, those collected...
Improving bioavailability of orally delivered drugs is still challenging, as conventional drug delivery systems suffer from non-specific in the gastrointestinal (GI) tract and limited absorption efficiency. Gastric even more difficult due to harsh microenvironment, short retention time, physiologic barriers stomach. Here, an oral microcapsule system was developed for gastric delivery, which consists ionic liquid (IL) inner carrier metal-phenolic network (MPN) shell. The IL@MPN microcapsules...
ABSTRACT This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for first time. system is low mass ratio ($q\sim 0.114$) medium ($f\sim 37.1~{{\ \rm per\ cent}}$). Two flare events were detected in multiple bands observations December 2022. The interval between two 4 d. average duration these flares about 2289 s. Both achieve energy levels superflares. excess emission H$_\alpha$ line LAMOST spectra this object was...
Abstract We performed photometric and spectroscopic studies of three large amplitude contact binaries: NSVS 2418361, ATLAS J057.1170+31.2384, 7377875. The amplitudes these systems’ light curves are more than 0.7 mag. analyzed the using Wilson–Devinney code to yield physical parameters. solutions suggested that 7377875 belongs an A-subtype binary, while others classified as W-subtype ones. Furthermore, mass ratio is higher 0.72, so it H-subtype binaries. Since their have unequal height at two...