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Research on Innovation and Entrepreneurship Education Reform in Local Colleges and Universities under the Background of Industry-Education Integration
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作者 Shuyue Gong lingyan li 《Journal of Contemporary Educational Research》 2024年第11期23-27,共5页
With the continuous development of China’s economy and the continuous upgrading of market demand,the demand for talent in enterprises and industries is increasingly diversified and complex,especially innovation abili... With the continuous development of China’s economy and the continuous upgrading of market demand,the demand for talent in enterprises and industries is increasingly diversified and complex,especially innovation ability has become one of the important standards to measure the quality of talent.At the same time,the difficult employment of college students is still serious,the state has issued a series of policies to encourage college students to actively start their own businesses.In this context,local universities,as an important part of higher education,are facing the critical task of innovation and entrepreneurship education reform.This paper aims to explore the current situation,problems,and reform paths of innovation and entrepreneurship education reform in local universities under the background of the integration of industry and education,in order to improve the training quality of innovative and entrepreneurial talents. 展开更多
关键词 Industry-education integration College students BUSINESS Innovation and entrepreneurship education reform
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Effects of different dietary energy and protein levels and sex on growth performance,carcass characteristics and meat quality of F1 Angus x Chinese Xiangxi yellow cattle 被引量:24
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作者 lingyan li Yuankui Zhu +2 位作者 Xianyou Wang Yang He Binghai Cao 《Journal of Animal Science and Biotechnology》 SCIE CAS 2014年第4期485-496,共12页
Background:The experiment evaluated the effect of nutrition levels and sex on the growth performance,carcass characteristics and meat quality of F1 Angus × Chinese Xiangxi yellow cattle.Methods:During the backg... Background:The experiment evaluated the effect of nutrition levels and sex on the growth performance,carcass characteristics and meat quality of F1 Angus × Chinese Xiangxi yellow cattle.Methods:During the background period of 184 d,23 steers and 24 heifers were fed the same ration,then put into a2×2×2 factorial arrangement under two levels of- dietary energy(TON:70/80%DM),protein(CP:11.9/14.3%DM)and sex(S:male/female) during the finishing phase of 146 d.The treatments were-(1) high energy/low protein(HELP),(2) high energy/high protein(HEHP),(3) low energy/low protein(LELP) and(4) low energy/high protein(LEHP).Each treatment used 6 steers and 6 heifers,except for HELP- 5 steers and 6 heifers.Results:Growth rate and final carcass weight were unaffected by dietary energy and protein levels or by sex.Compared with the LE diet group,the HE group had significantly lower dry matter intake(DMI,6.76 vs.7.48 kg DM/d),greater chest girth increments(46.1 vs.36.8 cm),higher carcass fat(19.9 vs.16.3%) and intramuscular fat content(29.9 vs.22.8%DM).The HE group also had improved yields of top and medium top grade commercial meat cuts(39.9 vs.36.5%).The dressing percentage was higher for the HP group than the LP group(53.4 vs.54.9%).Steers had a greater length increment(9.0 vs.8.3 cm),but lower carcass fat content(16.8 vs.19.4%) than heifers.The meat quality traits(shear force value,drip loss,cooking loss and water holding capacity) were not affected by treatments or sex,averaging 3.14 kg,2.5,31.5 and 52.9%,respectively.The nutritive profiles(both fatty and amino acid composition) were not influenced by the energy or protein levels or by sex.Conclusions:The dietary energy and protein levels and sex significantly influenced the carcass characteristics and chemical composition of meat but not thegrowth performance,meat quality traits and nutritive profiles. 展开更多
关键词 Carcass characteristics Energy F1 Angus × Chinese Xiangxi yellow cattle Growth performance Meat quality Protein Sex
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Optimization of the Ultrasonic-assisted Extraction Process for Protocatechuic Acid from Emilia sonchifolia DC by Response Surface Methodology 被引量:3
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作者 Wen CHEN Xiangjun WANG +5 位作者 lingyan li Zhewen ZHAI Xiaoling HUANG Wubing RAO Chenghan ZOU Tengtong li 《Agricultural Biotechnology》 CAS 2020年第3期58-66,共9页
[Objectives] This study was conducted to optimize the extraction process of protocatechuic acid from Emilia sonchifolia DC. [Methods] The optimal extraction conditions were determined by single factor,response surface... [Objectives] This study was conducted to optimize the extraction process of protocatechuic acid from Emilia sonchifolia DC. [Methods] The optimal extraction conditions were determined by single factor,response surface analysis and variance analysis,and the content of protocatechuic acid was determined by HPLC. [Results] The protocatechuic acid standard curve equation was: y = 1 435 x + 8 403,R^2= 0. 999 8,indicating a good linear relationship. The optimal extraction conditions were as follows: a temperature at 80 ℃,an extraction time of 1 h,a material-to-liquid ratio at 1:10 and an ultrasonic power of 600 W,and the content of protocatechuic acid extracted was 1. 93 mg/g. The method showed a RSD of 0. 41%,less than 2%,and the detection limit was 0. 0000047261 g/ml.The experimental sample X1 was the low-level 0. 1 mg/ml standard solution,which showed recovery of protocatechuic acid between 100.8% and 105.2%,with a RSD of 0. 013%;and the sample X2 was the high-level 1. 0 mg/ml standard solution,which exhibited recovery between 100. 6% and 102. 2%,with a RSD of 0.076%. Thus,the recovery was high,and the requirements of the performance index were met. [Conclusions] The detection method is stable and reliable and can produce satisfactory results. 展开更多
关键词 Emilia sonchifolia DC Protocatechuic acid HPLC Response surface optimization Variance analysis
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Study on Extraction Process of Sipunculus nudus Polysaccharide and Its Antioxidant Activity 被引量:1
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作者 Wen CHEN Xiangjun WANG +5 位作者 Dongxu SHAO lirong li Yuzhi HUANG Hongyuan SUN lingyan li Yong liN 《Agricultural Biotechnology》 CAS 2018年第2期112-118,123,共8页
[Objectives] This study was conducted to optimize the extraction process of Sipunculus nudus polysaccharide. [Methods]S. nudus polysaccharide was extracted by ultrasonic water extraction,with the marine S. nudus as a ... [Objectives] This study was conducted to optimize the extraction process of Sipunculus nudus polysaccharide. [Methods]S. nudus polysaccharide was extracted by ultrasonic water extraction,with the marine S. nudus as a raw material from Sanya City,Hainan Province,by single factor variable method,to find the optimal extraction conditions including ultrasonic power,solid-liquid ratio,ultrasonic extraction temperature,ultrasonic extraction time,ultrasonic extraction times and lye concentration. The absorbance of the polysaccharide was determined by an ultraviolet spectrophotometer,and polysaccharide yield were calculated. The antioxidant activity of scavenging hydroxyl and DPPH radicals was measured at different concentrations. [Results]The optimal extraction conditions for S. nudus polysaccharide were as follows: solid-liquid ratio at 1∶11 mg/ml,extraction temperature at 60 ℃,three times of ultrasonic extraction,ultrasonic power of 960 W,extraction time of 1. 5 h,and lye concentration of 5%,under which the polysaccharide yield was 3. 21%. The scavenging rates of hydroxyl radical and DPPH radical were 12. 58% at the concentration of 0. 20 mg/ml. Moreover,the scavenging rates increased significantly with the increase of concentration. [Conclusions] This method is a new trial with satisfactory results. 展开更多
关键词 Sipunculus nudus Ultrasound Lye concentration Polysaccharide Antioxidant activityHome
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Analysis of Status of Photovoltaic and Wind Power Abandoned in China 被引量:5
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作者 Shimin li Jing Wang +3 位作者 Qiong liu lingyan li Yaping Hua Wei liu 《Journal of Power and Energy Engineering》 2017年第1期91-100,共10页
It was reported that the total installed capacity of photovoltaic power in China has reached 43.5 GW [1] at the end of 2015. With the vast territory and abundant solar energy resources in western part of China, more t... It was reported that the total installed capacity of photovoltaic power in China has reached 43.5 GW [1] at the end of 2015. With the vast territory and abundant solar energy resources in western part of China, more than 50 percent of photovoltaic power stations and wind farms were built there. In recent years, influenced by such factors as rapid growth in installed capacity of PV power stations and wind farms, power generation districts far away from power consumption load as well as its mismatch in transmission line, the phenomenon of abandoning solar and wind power has already restricted severely the normal operation of photovoltaic and wind power generation. It has greatly reduced the enthusiasm of the investors and constructors for investing and building power stations. This paper, based on the status in quo of power generation market and power supply in China, analyzes multi-aspect reasons for the phenomenon of abandoning solar and wind power and discusses their solutions. 展开更多
关键词 WIND and Solar POWER Abandoned RENEWABLE Energy POWER CONSUMPTION
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Research on the Human resource management of Lenovo Group
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作者 lingyan li 《International English Education Research》 2015年第6期1-2,共2页
As the times of knowledge-based economy comes, if the enterprise wants to gain dominant position in the international arena, it must pay attention to the human resources strategy. Firstly, this paper defines the basic... As the times of knowledge-based economy comes, if the enterprise wants to gain dominant position in the international arena, it must pay attention to the human resources strategy. Firstly, this paper defines the basic theory of human resource management, and then in Lenovo case, this paper focused on analyzing Lenovo's acquisition of IBM's PC business, analyzed the condition of Lenovo PC business and mobile Intemet business by using traditional Boston matrix, and concluded that effect of Lenovo acquisition is not significant, then put forward some improving measures. 展开更多
关键词 Human resource management Lenovo Group Performance management.
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青藏高原三个盐碱湖的产甲烷菌群和产甲烷代谢途径分析 被引量:7
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作者 任秘坊 李凌燕 +3 位作者 陈琳 邢婷婷 刘勇勤 东秀珠 《微生物学报》 CAS CSCD 北大核心 2020年第1期161-171,共11页
【目的】分析青藏高原不同类型盐碱湖中的优势产甲烷菌群和优势产甲烷代谢途径。【方法】以不同盐度和植被类型的公珠错、昆仲错和无植被的兹格塘错的沉积物为研究对象,通过高通量测序和q PCR定量古菌16S r RNA多样性分析优势古菌类群;... 【目的】分析青藏高原不同类型盐碱湖中的优势产甲烷菌群和优势产甲烷代谢途径。【方法】以不同盐度和植被类型的公珠错、昆仲错和无植被的兹格塘错的沉积物为研究对象,通过高通量测序和q PCR定量古菌16S r RNA多样性分析优势古菌类群;模拟原位盐浓度及p H,比较不同产甲烷底物(甲醇、三甲胺、乙酸和H_2/CO_2)富集沉积物的产甲烷速率,分析其优势产甲烷菌代谢类型。通过添加产甲烷抑制剂(2-溴乙烷磺酸盐),检测沉积物中产甲烷底物积累,确定不同盐碱湖中主要的产甲烷途径。【结果】昆仲错的优势菌群包括甲基/乙酸型的甲烷八叠球菌科(Methanosarcinaceae,11%),乙酸型的甲烷鬃菌科(Methanosaetaceae,7.9%)和氢型甲烷菌甲烷杆菌目(Methanomicrobiales,7.4%);公珠错和兹格塘错的优势菌群为甲烷鬃菌科(Methanosaetaceae)分别占15%和15.3%,及甲烷杆菌属(Methanobacterium)和甲基型的甲烷叶菌属(Methanolobus)。公珠错和昆仲错分别以乙酸和甲醇产甲烷速率最高,而兹格塘错从不同底物产甲烷速率无差异。抑制甲烷产生后,公珠错主要积累乙酸,昆仲错主要积累甲醇;兹格塘错不仅甲烷排放低,也无产甲烷物质显著积累。【结论】昆仲错沉积物中的甲烷主要来自甲醇,公珠错中的甲烷主要来自乙酸,而兹格塘错产甲烷和底物积累不活跃。因而推测高原盐碱湖主要的产甲烷途径和菌群可能与周围植被类型的相关性更高,而与盐度的直接相关性较低。 展开更多
关键词 青藏高原 盐碱湖湿地 优势产甲烷菌 产甲烷代谢途径 植被相关性
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