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| 1 | NEW METHODS FOR CHARACTERIZING D-η-PROPERLY PREQUASI-INVEX FUNCTIONS显示文摘. The D-η-proper prequasi-invexity of vector-valued functions is characterized by means of (weak) nearly convexity and density of sets.Under weaker assumptions,some equivalent conditions for D-η-proper prequasi-invexity are derived. | Luo Hezhi Wu Huixian Zhu Yihua | 2006 | Applied Mathematics(A Journal of Chinese Universities)2006，21，1： | 4 |
| 2 | On the convergence of augmented Lagrangian methods for constrained global optimiza- tion显示文摘 | LUO Hezhi SUN Xiaoling LI Duan | 2007 | SIAM Journal on Optimization2007，18，： | 1 |
| 3 | Saddle points of general augmented Lagrangians for constrained nonconvex optimization 显示文摘 | WU Huixian LUO Hezhi | 2012 | Jour- nal of Global Optimization2012，53，： | 1 |
| 4 | ON CHARACTERIZATIONS OF D-η-PROPERLY PREQUASI-INVEX FUNCTION显示文摘最近, D- η - 的各种各样的概念适当地, prequasi-invex 功能被介绍;D- η - 的描述适当地, prequasi-invex 功能在条件的某个集合下面被介绍。在这篇论文,我们证明一样的结果能在更弱的假设下面被获得。 | Huixian WU Hezhi LUO | 2007 | Journal of Systems Science & Complexity2007，20，4： | 0 |
| 5 | 9,10-Anthraquinone contamination in tea processing using coal as heat source显示文摘9,10-Anthraquinone(AQ)is a contaminant with a potential carcinogenic risk and occurs in tea worldwide.The maximum residue limit(MRL)of AQ in tea set by the European Union(EU)is 0.02 mg/kg.The possible sources of AQ in tea processing and the main stages of its occurrence were investigated based on a modified AQ analytical method and gas chromatography-tandem mass spectrometry(GC-MS/MS)analysis.Compared with electricity as the heat source in green tea processing,AQ increased by 4.3 to 23.9 times in tea processing with coal as the heat source,far exceeding 0.02 mg/kg,while the AQ level in the environment tripled.The same trend was observed in oolong tea processing under coal heat.The steps with direct contact between tea leaves and fumes,such as fixation and drying,are considered as the main steps of AQ production in tea processing.The levels of AQ increased with the rising contact time,suggesting that high levels of AQ pollutant in tea may be derived from the fumes caused by coal and combustion.Fourty samples from different workshops with electricity or coal as heat sources were analyzed,ranged from 50.0%−85.0%and 5.0%−35.0%for detection and exceed rates of AQ.In addition,the maximum AQ content of 0.064 mg/kg was observed in the tea product with coal as the heat source,indicating that the high levels of AQ contamination in tea products are likely to be contributed by coal. | Jiawei Yu Li Zhou Xuan Wang Mei Yang Hezhi Sun Xinru Wang Fengjian Luo Xinzhong Zhang Zhengyun Lou Zongmao Chen | 2022 | Beverage Plant Research2022，2，1： | 0 |
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