Wyniki wyszukiwania - Biblioteka Nauki

1

Numerical and experimental study on seakeeping performance of a high-speed trimaran with T-foil in head waves

100%

Li A. , Li Y.

Polish Maritime Research

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2019

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tom 26

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nr 3

EN

The longitudinal motion characteristics of a slender trimaran equipped with and without a T-foil near the bow are investigated by experimental and numerical methods. Computational fluid dynamics ( CFD) method is used in this study. The seakeeping characteristics such as heave, pitch and vertical acceleration in head regular waves are analyzed in various wave conditions. Numerical simulations have been validated by comparisons with experimental tests. The influence of large wave amplitudes and size of T-foil on the longitudinal motion of trimaran are analyzed. The present systematic study demonstrates that the numerical results are in a reasonable agreement with the experimental data. The research implied that the longitudinal motion response values are greatly reduced with the use of T-foil

2

Yellowfin tuna (Thunnusalbacares) fishing ground forecasting model based on bayes classifier in the South China Sea

80%

Zhou W. , Li A. , Ji S. , Qiu Y.

Polish Maritime Research

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2017

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tom S 2

140--146

EN

Using the yellowfin tuna (Thunnusalbacares,YFT)longline fishing catch data in the open South China Sea (SCS) provided by WCPFC, the optimum interpolation sea surface temperature (OISST) from CPC/NOAA and multi-satellites altimetric monthly averaged product sea surface height (SSH) released by CNES, eight alternative options based on Bayes classifier were made in this paper according to different strategies on the choice of environment factors and the levels of fishing zones to classify the YFT fishing ground in the open SCS. The classification results were compared with the actual ones for validation and analyzed to know how different plans impact on classification results and precision. The results of validation showed that the precision of the eight options were 71.4%, 75%, 70.8%, 74.4%, 66.7%, 68.5%, 57.7% and 63.7% in sequence, the first to sixth among them above 65% would meet the practical application needs basically. The alternatives which use SST and SSH simultaneously as the environmental factors have higher precision than which only use single SST environmental factor, and the consideration of adding SSH can improve the model precision to a certain extent. The options which use CPUE’s mean ± standard deviation as threshold have higher precision than which use CPUE’s 33.3%-quantile and 66.7%-quantile as the threshold

3

Nonlinear inverse solution by the look-up table method for Risley-prism-based scanner

80%

Li A. , Sun W. , Gao X.

Optica Applicata

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2016

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tom Vol. 46, nr 4

501--515

EN

A pair of rotation Risley prisms can perform superior optical pointing and tracking functions with large visual field and high accuracy. Crucial to the function implementation are the nonlinear inverse solutions to the double-prism orientation angles for tracking a given target trajectory. In the paper, a novel look-up table method is proposed to solve this problem. Because there are two groups of solutions to the rotation angles achieved from an arbitrary target point, a "jump" phenomenon occurs and generates the discontinuous curves of multi-group rotation angle solutions. According to the mapping relation between the coordinate values of the target point and the corresponding rotation angles of two prisms, we can establish the continuous solution curves by adding constraints and employing an optimization algorithm. Experimental results validate the obtained inverse solutions applicable to scan a trajectory close to the given one within an error threshold. The proposed look-up table method can provide foundation for the continuous control of the Risley-prism-based scanner in its inverse applications.Keywords: Risley prism, look-up table method, inverse solution, scanner.

4

Integrated design for large-scale opto-mechanical structure

80%

Li A. , Bian Y. , Liang Y. , Zhu Y.

Optica Applicata

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2009

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tom Vol. 39, nr 2

383-389

EN

An integrated design method is discussed which thoroughly considers related parameters of the various subsystems in order to optimize the overall system that mainly consists of opto-mechanical structure CAD, CAE and the integrated information platform PDM. Based on the parameter drive of the virtual main model, the method focuses on the model transformation and data share among different design and analysis steps, and so the concurrent simulation and design optimization are carried out. As an example of application, the integrated design for a large-scale opto-mechanical structure is introduced, including optical design, structure design and analysis, which further validates the advantages of the method. Due to comprehensive consideration of the design and analysis process by CAD and CAE based on PDM, the integrated design well attains the structure optimization with high efficiency.

5

Microwave-assisted hydrothermal carbonization of furfural residue for adsorption of Cr(VI): adsorption and kinetic study

70%

Khushk S. , Zhang L. , Li A. , Irfan M. , Zhang X.

Polish Journal of Environmental Studies

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2020

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tom 29

|

nr 2

6

Big data research on agricultural soil contamination by zeolite application

70%

Zhang H. , Chen Y. , Liu S. X. , Jachimowicz A. E. , Li A.

Journal of Elementology

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2022

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tom 27

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nr 2

7

The feasibility of AOPs and an SBR for treating wastewater from polyurethane manufacturing

70%

Li A. , He M. , Dong N. , Xu W. , Pan T.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 4

EN

We studied the feasibility of two advanced oxidation processes (AOPs), including the Fenton and ozonation processes, and a conventional sequence batch reactor (SBR) for treating wastewater from polyurethane manufacturing. The results showed that the SBR achieved a COD removal rate of 93.3% when the influent COD concentration was 1,600 mg·L-1, which was 22.1 and 522.1% higher than the best results by the Fenton (H2O2/COD = 0.0623 mM·g-1 and Fe2+/COD = 0.0102 mM·g-1) and ozonation (1 g·L-1, 45 min) processes. A COD removal rate of 90.6% for SBR was achieved after an aeration time of 12 h, and the COD degradation rate was similar to that of a zero-order reaction. A study of the SBR drivers suggested that air stripping and self-volatilization contributed to the higher COD removal rates obtained in this process. This study shows that a single SBR is practical for treating small amounts of polyurethane manufacturing wastewater, and that it had a higher ability to remove COD and resist feeding load shock than the other methods tested. But the potential risks of volatile organic compounds (VOCs) stripping out during the aeration process should be of concern.

8

Impact of DDT residues in feed on thyroid gland and liver secretory activity of Aberdeen-Angus cattle depending on cattle age and sex

70%

Li A. , Derkho M. , Tuyakova R. , Iwaniuk P. , Lozowicka B.

Journal of Animal and Feed Sciences

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2020

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tom 29

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nr 4

9

Structural analysis of shearing mirror assembly in a lateral double-shearing interferometer

61%

Li A. , Luan Z. , Jiang X. , Bian Y. , Wang L. , Liu L.

Optica Applicata

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2011

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tom Vol. 41, nr 3

701--715

EN

By the finite element analysis method, the deformation and stress of the double-shearing mirror assembly is studied to validate the feasibility of the opto-mechanical structure. The side axial deformations (within A400 mm) of the upper semicircular mirror and the lower one are both up to micrometer order along the Y-direction under gravitational action. The equivalent stresses of two semicircular mirrors are more concentrated in the contact areas, but far less than the admissible stress of K9 material. The axial deformations of double-shearing mirror surfaces induced by the temperature rise are very serious, which are the major error sources for the measurement accuracy. The experimental results further validate the analysis conclusions available and show the opto-mechanical design to be reasonable.

10

Gastrodin ameliorates spinal cord injury via antioxidant and anti-inflammatory effects

61%

Du F. , Wang X. , Shang B. , Fang J. , Xi Y. , Li A. , Diao Y.

Acta Biochimica Polonica

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2016

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tom 63

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nr 3

11

Effect of plastic mulching on the photosynthetic capacity, endogenous hormones and root yield of summer-sown sweet potato (Ipomoea batatas (L). Lam.) in Northern China

61%

Hou F. , Zhang L. , Xie B. , Dong S. , Zhang H. , Li A. , Wang Q.

Acta Physiologiae Plantarum

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2015

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tom 37

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nr 08

EN

A field experiment was conducted to examine the effects of plastic mulching (PM) on the photosynthetic rate, endogenous hormones and root yield of summer sweet potato [I. batatas L. cv. Jishu18 and Ayamuraski (Aya.)]. The results showed that the PM treatments decreased soil bulk density, increased soil porosity and soil available nutrient content, and retained soil water content at a relatively stable level, but no significant difference in soil temperature was observed compared with the control. The leaf chlorophyll content, photosynthetic rate, ribulose 1,5- bisphosphate carboxylase activity, leaf area index, soluble sugar content, and adenosine triphosphate content was higher in the PM treatments compared with the control. In addition, root gibberellic acid, zeatin riboside and abscisic acid content increased under PM treatment. The PM treatment improved the soil micro-environment of sweet potato, resulting in a higher storage root yield and top/root ratio (T/R). According to these results, it is concluded that mulching summer-sown sweet potato is an effective way to increase root yield in northern China, most likely through the modification of the soil micro-environment, photosynthetic capacity and endogenous hormones.

12

TGF-beta1 immunohistochemistry and promoter methylation in chronic renal failure rats treated with uremic clearance granules

61%

Miao X.-H. , Wang C.-G. , Hu B.-Q. , Li A. , Chen C.-B. , Song W.-Q.

Folia Histochemica et Cytobiologica

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2010

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tom 48

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nr 2

284-291

13

Root yield, antioxidant capacities, and hormone contents in different drought-tolerant sweet potato cultivars treated with ABA under early drought stress

51%

Zhang H. , Duan W. , Xie B. , Wang B. , Hou F. , Li A. , Dong S. , Qin Z. , Wang Q. , Zhang L.

Acta Physiologiae Plantarum

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2020

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tom 42

|

nr 08

14

Evaluating the Babesia bovis infection of cattle in China with enzyme-linked immunosorbent assay (ELISA)

51%

Yang C. , Liu J. , Li A. , Li Y. , Liu A. , Xie J. , Liu G. , Yin H. , Guan G. , Luo J.

Acta Parasitologica

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2015

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tom 60

|

nr 4

15

iTRAQ-based quantitative proteomic analysis of cotton (Gossypium hirsutum L.) leaves reveals pathways associated throughout the aging process

51%

Liu L. , Li A. , Chen J. , Wang M. , Zhang Y. , Sun H. , Wang X. , Li C.

Acta Physiologiae Plantarum

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2019

|

tom 41

|

nr 08

EN

Leaf senescence is associated with changes in proteomics. In this study, to quantitatively analyze changes in protein abundance related to leaf senescence in cotton (Gossypium hirsutum L.), we employed a proteomic approach utilizing iTRAQ and physiological assays throughout the senescence of leaf tissue in cotton grown under typical field conditions. Physiological tests showed leaf chlorophyll content and photosynthetic rates decreased significantly throughout the aging process. A total of 195 differentially abundant proteins (DAPs) throughout leaf senescence were identified by mass spectrometry. Of these, 91 (47%) proteins were upregulated, while the remaining 104 (53%) were downregulated. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses indicated that the expression of genes in several pathways potentially associated with aging changed throughout senescence, including metabolic pathways, photosynthesis, pyruvate metabolism, nitrogen metabolism, and diterpenoid biosynthesis. Our findings provide a deeper understanding of aging in plants as well as fundamental data describing leaf senescence in cotton.