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Institution

Lanzhou University of Technology

EducationLanzhou, China
About: Lanzhou University of Technology is a education organization based out in Lanzhou, China. It is known for research contribution in the topics: Microstructure & Alloy. The organization has 12051 authors who have published 9602 publications receiving 90798 citations. The organization is also known as: Lánzhōu Lǐgōng Dàxué & Gansu provincial Technical School.


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TL;DR: Superhydrophobic conjugated microporous polymers show good selectivity, fast adsorption kinetics, excellent recyclability and absorbencies for a wide range of organic solvents and oils, which make them the promising candidates for potential applications, including liquid-liquid separation, water treatment and so on.
Abstract: Superhydrophobic conjugated microporous polymers show good selectivity, fast adsorption kinetics, excellent recyclability and absorbencies for a wide range of organic solvents and oils, which make them the promising candidates for potential applications, including liquid–liquid separation, water treatment and so on.

489 citations

Journal ArticleDOI

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TL;DR: The nickel oxide nano-flakes materials prepared by a facile approach maintain high power density at high rates of discharge and have excellent cycle life, suggesting their potential application in supercapacitors.
Abstract: The nickel oxide nano-flakes materials prepared by a facile approach maintain high power density at high rates of discharge and have excellent cycle life, suggesting their potential application in supercapacitors.

361 citations

Journal ArticleDOI

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TL;DR: In this paper, five types of waste tea-leaves, which come from five of the most typical tea in China, were first used to prepare activated carbons (ACs) by high-temperature carbonization and activation with KOH.
Abstract: In this paper, five types of waste tea-leaves, which come from five of the most typical tea in China, are first used to prepare activated carbons (ACs) by high-temperature carbonization and activation with KOH. The resulting ACs show typical amorphous character, and display porous structures with high specific surface areas ranging from 2245 m 2 g −1 to 2841 m 2 g −1 . As the electro-active electrode materials, the as-made five ACs exhibit ideal capacitive behaviors in aqueous KOH electrolyte, and the maximal specific capacitance is as high as 330 F g −1 at the current density of 1 A g −1 . Furthermore, they all show excellent electrochemical cycle stability with ∼92% initial capacitance being retained after 2000 cycles. The desirable capacitive performances enable the waste tea-leaves to act as a new biomass source of carbonaceous materials for high performance supercapacitors and low-cost energy storage devices.

343 citations

Journal ArticleDOI

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TL;DR: In this article, single-walled carbon nanotubes (SWNTs) filled nanocomposite SWNT/epoxy resin composite with good uniformity, dispersion and alignment of SWNTs and with different SWNT concentrations was produced by solution casting technique.
Abstract: The single-walled carbon nanotubes (SWNTs) filled nanocomposite SWNT/epoxy resin composite with good uniformity, dispersion and alignment of SWNTs and with different SWNTs concentrations was produced by solution casting technique. Subsequently, the semidried mixture was stretched repeatedly along one direction at a large draw-ratio of 50 for 100 times at ambient atmosphere manually to achieve a good alignment and to promote dispersion of SWNTs in the composite matrix. Composite showed higher electrical conductivities and mechanical properties such as the Young’s modulus and tensile strength along the stretched direction than perpendicular to it, and the electrical property of composite rise with the increase of SWNT concentration. The percolation threshold value of electrical conductivity along the stretching direction is lower than the value perpendicular to the SWNTs orientation. In addition, the anisotropic electric and mechanical properties results, SEM micrograph and the polarized Raman spectra of the SWNT/epoxy composite reveal that SWNTs were well dispersed and aligned in the composites by the repeated stretching process.

304 citations

Journal ArticleDOI

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TL;DR: Local weather condition with low temperature, mild diurnal temperature range and low humidity likely favor the transmission of novel coronavirus disease 2019 and meteorological factors play an independent role in the COVID-19 transmission after controlling population migration.
Abstract: The purpose of the present study is to explore the associations between novel coronavirus disease 2019 (COVID-19) case counts and meteorological factors in 30 provincial capital cities of China. We compiled a daily dataset including confirmed case counts, ambient temperature (AT), diurnal temperature range (DTR), absolute humidity (AH) and migration scale index (MSI) for each city during the period of January 20th to March 2nd, 2020. First, we explored the associations between COVID-19 confirmed case counts, meteorological factors, and MSI using non-linear regression. Then, we conducted a two-stage analysis for 17 cities with more than 50 confirmed cases. In the first stage, generalized linear models with negative binomial distribution were fitted to estimate city-specific effects of meteorological factors on confirmed case counts. In the second stage, the meta-analysis was conducted to estimate the pooled effects. Our results showed that among 13 cities that have less than 50 confirmed cases, 9 cities locate in the Northern China with average AT below 0 °C, 12 cities had average AH below 4 g/m3, and one city (Haikou) had the highest AH (14.05 g/m3). Those 17 cities with 50 and more cases accounted for 90.6% of all cases in our study. Each 1 °C increase in AT and DTR was related to the decline of daily confirmed case counts, and the corresponding pooled RRs were 0.80 (95% CI: 0.75, 0.85) and 0.90 (95% CI: 0.86, 0.95), respectively. For AH, the association with COVID-19 case counts were statistically significant in lag 07 and lag 014. In addition, we found the all these associations increased with accumulated time duration up to 14 days. In conclusions, meteorological factors play an independent role in the COVID-19 transmission after controlling population migration. Local weather condition with low temperature, mild diurnal temperature range and low humidity likely favor the transmission.

302 citations


Authors

Showing all 12051 results

NameH-indexPapersCitations
Lei Jiang1702244135205
Lei Zhang135224099365
Xiaoming Li113193272445
Jian Zhang107306469715
Min Zhang85154834853
Wei Ma8243830282
Wei Sun7877024297
Bo Yu7548517522
Yan Wang72125330710
Lizhong Zhu6827316428
Yu Liu66126220577
Fan Yang6598623818
K. T. Chau6549316619
Hui-Shen Shen6522413514
Houbing Song5642511550
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202254
20211,324
20201,145
2019954
2018691
2017547