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| 1 | Effects of light quality on growth and development of cucumber seedlings in controlled environment显示文摘Conventional light sources have been successfully used to cultivate a wide variety of horticultural crops.However,they are of limited use due to uncontrollability of spectra and energy inefficiency.Light-emitting diodes(LEDs)emerged with tremendous potential in controlled environment agriculture due to their energy efficiency,longevity,and spectral specificity,but the effects of different types of LEDs on plant growth and development must be examined.In this study,cucumber(Cucumis sativus L.cv.Zhongnong 26)seedlings were grown under four different lighting treatments that each delivered a photosynthetic photon flux density of 200μmol/m2·s at plant canopy including triphosphate fluorescent lamps(TF),high-frequency fluorescent lamps(HF),white LEDs(WL),and red and blue LEDs(RBL).Cucumber seedlings were grown in a growth chamber at(25.0±1.5)℃with 12-hour light and 12-hour dark for 30 days after sowing,and data were subsequently collected.Seedlings grown under the WL were 45%,12%,and 40%taller than those grown under the TF,HF and RBL,respectively.The leaf area was 23%smaller under the TF than under the HF.The shoot dry weight was 16%-22%lower under the TF than under the other lighting treatments.The transplants grown under the RBL had the lowest root dry weight and root to shoot ratio.The seedling quality index was similar among all the lighting treatments.The LEDs treatment yielded more total dry weight with unit electric power compared to the fluorescent lamps.The chlorophyll content was 13%-15%higher in plants grown under the HF and WL than that under the TF and RBL.Plants grown under the WL and RBL had greater photosynthetic rate,transpiration rate,and stomatal conductance than those grown under the TF and HF.It was concluded that high quality cucumber seedlings can be efficiently produced under the broad-spectrum WL that emit a reasonable amount of blue,green and red light,and the lack of green light and/or high ratio of red to blue light under the RBL may cause undesired plant attributes. | Song Jinxiu Meng Qingwu Du Weifen He Dongxian | 2017 | International Journal of Agricultural and Biological Engineering2017，10，3： | 4 |
| 2 | SERS detection of arsenic in water:A review显示文摘Arsenic(As) is one of the most toxic contaminants found in the environment. Development of novel detection methods for As species in water with the potential for field use has been an urgent need in recent years. In past decades, surface-enhanced Raman scattering(SERS)has gained a reputation as one of the most sensitive spectroscopic methods for chemical and biomolecular sensing. The SERS technique has emerged as an extremely promising solution for in-situ detection of arsenic species in the field, particularly when coupled with portable/handheld Raman spectrometers. In this article, the recent advances in SERS analysis of arsenic species in water media are reviewed, and the potential of this technique for fast screening and field testing of arsenic-contaminated environmental water samples is discussed. The problems that remain in the field are also discussed and an outlook for the future is featured at the end of the article. | Jumin Hao Mei-Juan Han Songman Han Xiaoguang Meng Tsan-Liang Su Qingwu K.Wang | 2015 | Journal of Environmental Sciences2015，27，10： | 4 |
| 3 | Laser cladding NiCoCrAlY coating on Ti-6Al-4V显示文摘 | MENG Qingwu GENG Lin NI Dingrui | 2005 | Materials Letter2005，59，： | 1 |
| 4 | Laser cladding NiCoCrAlY coating on Ti-6Al-4V显示文摘 | Qingwu Meng Lin Geng Dingrui Ni | 2005 | Materials Letters2005，，22： | 1 |
| 5 | Laser cladding of Ni-base composite coating onto Ti26A124V substrates with pre-placedB4C+NiCrBSi powders显示文摘 | MENG Qingwu GENG Lin ZHANG Baoyou | 2006 | Surface and Coatings Technology2006，200，1617： | 1 |
| 6 | Laser cladding of Ni-base composite coatings onto Ti-6A1-4V substrates with pre-placed B4C+NiCrBSi powders 显示文摘 | MENG Qingwu GENG Lin ZHANG Baoyou | 2006 | Surface and Coatings Technology2006，200，1617： | 1 |
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