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Institution

Henan University of Technology

EducationZhengzhou, China
About: Henan University of Technology is a education organization based out in Zhengzhou, China. It is known for research contribution in the topics: Catalysis & Starch. The organization has 7648 authors who have published 6503 publications receiving 73067 citations. The organization is also known as: Hénán Gōngyè Dàxué.


Papers
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Journal ArticleDOI
TL;DR: Astaxanthin was encapsulated in nanoliposomes by a film dispersion-ultrasonic technique using soybean phosphatidyl choline and showed advantages in the aspects of high encapsulation efficiency and less particle size with a remarkably homodisperse size distribution.
Abstract: Astaxanthin was encapsulated in nanoliposomes by a film dispersion-ultrasonic technique using soybean phosphatidyl choline. The astaxanthin-loaded nanoliposomes displayed advantages in the aspects of high encapsulation efficiency and less particle size with a remarkably homodisperse size distribution. Based on X-ray diffraction and differential scanning calorimetry the analysis, it has been demonstrated that there could be interactions of astaxanthin with the lipid bilayer, resulting in the forming of astaxanthin-loaded nanoliposomes. The thermal gravimetric analysis revealed that the thermal stability of astaxanthin after encapsulation in nanoliposomes was remarkably enhanced as compared to astaxanthin alone. Furthermore, encapsulation could greatly enhance the water dispersibility of astaxanthin. This study also confirmed that encapsulation of astaxanthin in nanoliposomes could be an effective way to supply astaxanthin continuously in the body. The effects of astaxanthin incorporation on structural changes of the liposomal membrane were investigated through steady-state fluorescence measurements. This study revealed that the incorporation of astaxanthin into the lipid bilayer decreased membrane fluidity, but increased micropolarity in the membrane within a certain range of astaxanthin concentrations. Additionally, it indicated that the encapsulation of astaxanthin in the lipid bilayer could be applied to modulate the structural properties of membranes.

50 citations

Journal ArticleDOI
TL;DR: In this article, an ultra-sensitive electrochemical DNA biosensor was developed by assembling probe ssDNA on a glassy carbon electrode modified with a composite made from molybdenum disulfide, graphene, chitosan and gold nanoparticles.
Abstract: We have developed an ultra-sensitive electrochemical DNA biosensor by assembling probe ssDNA on a glassy carbon electrode modified with a composite made from molybdenum disulfide, graphene, chitosan and gold nanoparticles. A thiol-tagged DNA strand coupled to horseradish peroxidase conjugated to AuNP served as a tracer. The nanocomposite on the surface acts as relatively good electrical conductor for accelerating the electron transfer, while the enzyme tagged gold nanoparticles provide signal amplification. Hybridization with the target DNA was studied by measuring the electrochemical signal response of horseradish peroxidase using differential pulse voltammetry. The calibration plot is linear in the 5.0 × 10−14 and 5.0 × 10−9 M concentration range, and the limit of detection is 2.2 × 10−15 M. The biosensor displays high selectivity and can differentiate between single-base mismatched and three-base mismatched sequences of DNA. The approach is deemed to provide a sensitive and reliable tool for highly specific detection of DNA.

50 citations

Journal ArticleDOI
TL;DR: This paper proposes two distributed synchronization protocols for a network of continuous-time coupled harmonic oscillators by utilizing current and past relative sampled position data, respectively.
Abstract: This paper proposes two distributed synchronization protocols for a network of continuous-time coupled harmonic oscillators by utilizing current and past relative sampled position data, respectively. Some necessary and sufficient conditions in terms of coupling strength and sampling period are established to achieve network synchronization. By designing the coupling strength based on the nonzero eigenvalues of the Laplacian matrix of the network, it is shown that the synchronization in the network can be reached if and only if the sampling period is taken from a sequence of disjoint open intervals. In particular, when the Laplacian matrix has some complex eigenvalues, it is found that the sampling period should be larger than a positive threshold, that is, any small sampling period less than this threshold will not lead to network synchronization. Numerical examples are given to demonstrate the effectiveness of the theoretical analysis.

50 citations

Journal ArticleDOI
TL;DR: In this article, a wideband CMOS active mixer with improved noise and linearity was proposed, merging a resistive feedback noise-canceling low-noise amplifier as its transconductor.
Abstract: A wideband CMOS active mixer is proposed with improved noise and linearity, merging a resistive feedback noise-canceling low-noise amplifier as its transconductor. The noise-canceling characteristic enables the transconductor with low noise over a wide frequency range. An auxiliary pMOS transistor is employed to cancel the third-order nonlinear currents of a composite transistor in the transconductor, and impair the second-order nonlinear currents of that. To enhance input equivalent transconductance, a bulk cross-coupled feedback is applied to the transistor in the transconductor with large power consumption. Together with a current bleeding technique, comparable gain, noise, and improved linearity are achieved, but by reduced bias currents of the mixer. Fabricated in a 0.13- μm triple-well RF CMOS process, the proposed mixer demonstrates a voltage gain of 16.3-14.4 dB, average noise figure of 4.2 dB, and input-referred third-order intercept point of 7.3-2.5 dBm, operating between 500 MHz-5.8 GHz. It consumes 17 mA from a 1.5-V supply and occupies an area of 1.1×1.1 mm 2 .

50 citations

Journal ArticleDOI
TL;DR: In this paper, a novel strategy to design S-doped carbon employing durian shell-based activated carbon (DSAC) was proposed and the effect of the amount of DSAC additive was investigated in detail.
Abstract: Restricted by their high specific surface area and porous structures, activated carbon (AC) materials display poor performances, such as a low initial coulombic efficiency in sodium-ion batteries (SIBs). Nevertheless, it is an ideal choice for carriers, where the high specific surface area is indispensable. Herein, a novel strategy to design S-doped carbon employing durian shell-based AC (DSAC) as the template is proposed and the effect of the amount of DSAC additive was investigated in detail. Impressively, an optimized amount of DSAC additive would contribute to the good dispersion of poly-2-thiophenemethanol (sulfur source) as well as an increased number of active sites for Na storage, thus resulting in excellent electrochemical performance. A high reversible specific capacity of 345 mA h g−1 was attained and the specific capacity of 264 mA h g−1 was retained after 200 cycles. In particular, a high initial coulombic efficiency of 56.02% and remarkable rate capability of 100.02 mA h g−1 were achieved at 5 A g−1 even after 4500 cycles. Meaningfully, the proposed route used to prepare carbon materials for SIBs can effectively facilitate the further application of AC and the construction of high-performance electrode materials for SIBs.

50 citations


Authors

Showing all 7708 results

NameH-indexPapersCitations
Xin Li114277871389
Yang Liu82169533657
Qing-Hua Qin525059939
Dong-Qing Wei484187839
Feng Qi4758110687
Jian Jian Li461197577
Hongshun Yang461655539
Shuangqiang Chen41735539
Fei Xu403146102
Dennis R. Salahub391329259
Lingbo Qu372914894
Yuting Wang378011820
Zhiyong Jiang361353559
Baoping Tang31832455
Jinliang Liu301072317
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202325
2022128
2021799
2020670
2019574
2018452