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气相色谱法检测辐照牛肉中的碳氢化合物

核农学报 2009年第4期23卷 652-655页

作者：李安哈益明王锋中国农业科学院农产品加工研究所北京100193

利用气相色谱法分析牛肉辐照前后碳氢化合物的类型与浓度差异,建立了一种能判别辐照牛肉的鉴定方法。本试验通过正己烷溶剂萃取,Florisil柱分离和气相色谱分析,对辐照牛肉产生的6种碳氢化合物进行了定性和定量分析。研究结果表明,牛肉... 详细信息

利用气相色谱法分析牛肉辐照前后碳氢化合物的类型与浓度差异,建立了一种能判别辐照牛肉的鉴定方法。本试验通过正己烷溶剂萃取,Florisil柱分离和气相色谱分析,对辐照牛肉产生的6种碳氢化合物进行了定性和定量分析。研究结果表明,牛肉经辐照处理后,显著产生1,7-C16:2(1,7-十六二烯),而在未辐照的牛肉中没有检测到,因而1,7-C16:2是鉴定牛肉是否经过辐照处理的最适合标志物。

关键词：碳氢化合物辐照牛肉标志物鉴定

Line Broadening in a Limb Flare: Derivation of Macro-turbulent Velocity Fields

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Chinese Journal of Astronomy and Astrophysics 2002年第3期2卷 277-286页

作者： Ying Liu and ming-De DingDepartment of Astronomy, Nanjing University, Nanjing 210093 Department of Astronomy Nanjing University Nanjing 210093

The line profiles of ha in a limb flare on 1998 November 11 appear to be unusually broadened. It is considered that macro-turbulence (or macroscopic mass motions) may be one of the main causes. We use an inversion technique to extract the probability distribution of the line-of-sight velocity in the flare. There exist some differences between the velocity distributions deduced from ha and from Ca II λ8542, which may be because the two lines depend differently on the temperature and velocity. Since the loop density is high, we obtain a rather short cooling time (several tens of seconds) from the hot X-ray loops to the cool loops visible in ha. Possible origins of the large scale motions are discussed.

关键词： Sun: flares - Sun: atmospheric motions - Line: profiles

Efficacy and safety of activating blood circulation and removing blood stasis of Traditional Chinese Medicine for managing renal fibrosis in patients with chronic kidney disease:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2023年第3期43卷 429-440页

作者： LUO Xin XIE Jing HUang Li GAN Wenfan CHEN ming Hospital of Chengdu University of Traditional Chinese Medicine Chengdu 610072China Chengdu University of Traditional Chinese Medicine Chengdu 610075China

OBJECTIVE:To evaluate the efficacy and safety of activating blood circulation and removing blood stasis in terms of Traditional Chinese Medicine(TCM) for managing renal fibrosis(RF) in patients with chronic kidney disease(CKD).METHODS:We searched randomized controlled trials(RCTs) from eight ***:Sixteen eligible studies with 1,356 participants were included in this *** to treatment with Western Medicine(WM) alone,the combined treatment with activating blood circulation and removing blood stasis in terms of TCM(ARTCM) and WM to manage RF in patients with CKD significantly ameliorated type Ⅳ collagen(C-Ⅳ)(SMD:-2.17,95% CI:3.01 to-1.34),type Ⅲ procollagen(PC-Ⅲ)(SMD:-1.08,95% CI:-1.64 to-0.53),laminin(LN)(SMD:-1.28,95% CI:-1.65 to-0.90),transforming growth factor β 1(TGF-β1)(SMD:-0.65,95% CI:-1.18 to-0.12),serum creatinine(Scr)(SMD:-1.36,95% CI:-1.85 to-0.87),blood urea nitrogen(BUN)(MD:-1.51,95% CI:-2.59 to-0.43),and 24 h urine protein(24h Upro)(SMD:-1.23;95% CI:-1.96 to-0.50).The level of hyaluronic acid(ha) was similar in both types of treatment(SMD:-0.74,95% CI:-1.91 to 0.44).The subgroup analysis showed that the duration of 8 weeks might affect the concentration of C-Ⅳ,PC-Ⅲ,and LN(P had reported adverse *** results of the Meta-analysis were not stable *** was publication bias for the reports on Scr(P = 0.001),C-Ⅳ(P = 0.001),PC-Ⅲ(P = 0.026),and LN(P = 0.030) and no publication bias for the reports on BUN(P = 0.293).The quality of evidence varied from low to very ***:The combined treatment using ARTCM and WM to manage RF in patients with CKD has some advantages over treatment with WM ***-quality RCTs need to be conducted for the strong support.

关键词： Medicine Chinese traditional activating blood circulation and removing blood stasis renal fibrosis efficacy safety Meta-analysis systematic review

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辐照食品分析检测技术的研究进展

食品科学 2005年第6期26卷 260-265页

作者：哈益明周洪杰农业部辐照产品质量监督检验测试中心北京100094

本文介绍了国内外辐照食品检测技术的研究进展,着重对化学分析法、电子自旋共振(ESR)法及热释光分析(TL)法进行了阐述,并对今后辐照食品检测技术的研究提出了建议。

关键词：辐照食品检测方法辐射效应

Optimizing the application of a novel harvest aid to improve the quality of mechanically harvested cotton in the North China Plain

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Journal of Integrative Agriculture 2021年第11期20卷 2892-2899页

作者： MENG Lu ZHang Li-zhen QI hai-kun DU ming-wei ZUO Yan-li ZHang ming-cai TIAN Xiao-li LI Zhao-hu Engineering Research Center of Plant Growth Regulator Ministry of Education/College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193P.R.China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193P.R.China Hebei Cottonseed Engineering Technology Research Center Hejian 062450P.R.China

Defoliation is an indispensable step in cotton production with mechanical harvesting,especially in the North China Plain(NCP)where mechanical harvesting is limited by a large proportion of green leaves and unopened bolls at harvest time due to insufficient thermal *** is essential to quantify the optimal use of defoliation products while minimizing yield and quality loss in *** objective of this study was to test the effect of a new defoliant Xinsaili(XSL,a compound of 10% thidiazuron and 40% ethephon)on the spatial distribution of cotton leaves and bolls,yield and quality in the *** were four treatments:XSL 1800 m L ha^(-1),XSL 2700 m L ha^(-1),XSL splitted into two equal applications(1350 m L ha^(-1) for each),and XSL-free(water)*** experiments were conducted in Hebei,China in *** the defoliant treatments did not significantly affect cotton yield and fiber quality compared with the water *** harvest time,the rate of open bolls under XSL 2700 m L ha^(-1) was 13.5% higher than that under XSL-free control,while the other two treatments showed no significant difference,across the two *** percentage of the three XSL treatments showed no difference,but they were on average 42.2% higher than that of XSL-free *** year-round effect of the defoliant XSL was significant,indicating that climate factors would affect its *** was concluded that the optimal dose of XSL in the NCP was 2700 m L ha^(-1),and it was unnecessary to split it into two *** results would promote cotton mechanical harvesting and reduce the labor cost of cotton production in China.

关键词： thidiazuron ethephon defoliation leaf distribution yield components

Impacts of short-term nitrogen addition on the thallus nitrogen and phosphorus balance of the dominant epiphytic lichens in the Shennongjia mountains, China

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Journal of Plant Ecology 2019年第4期12卷 751-758页

作者： ming Wang Chuanhua Wang Lin Yang Hua Guo Hubei International Scientific and Technological Cooperation Center of Ecological Protection and Management in the Three Gorges Area China Three Gorges UniversityDaxue Road 8Yichang 443002China Engineering Research Center of Eco-Environment in the Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China Department of Basic Medicine Guizhou Technical College of HealthTongren 554300China School of Life Science Shanxi Normal UniversityLinfen 041004China

Aims To better understand whether and how nitrogen addition impacts the epiphytic lichens in the Shennongjia Nature Reserve(China).Methods Five dominant epiphytic lichen species,including Usnea longis-sima,***,Ramalina calicaris ***,*** and ***,were selected as materials,and then field and la-boratory nitrogen addition experiments were *** phos-phomonoesterase(PME)activity and nitrogen(N)and phosphorus(P)content of these lichens were measured,and then the effects of nitrogen addition on thallus nutrient balance and PME activity were *** Findings Our results showed that with an increased N deposition from 0.6 to 50 kg N ha^(−1) a^(−1),the thallus N content of the five lichen species increased significantly,suggesting that those lichens had strong ability to take up and accumulate N,and an universality of N intolerance in epiphytic ***,the P content of five lichens increased slower than N content among N treatments,indicating the supply of P was deteriorated when the supply of N *** N addition also led to the N:P ratios of five lichens increased from about 10 to 20,and reached a maximum at 50 kg N ha^(−1) a^(−1),and the PME activity of the five lichen species was upregulated by the N addition,indicated that the balance between N and P was deteriorated in these *** concluded that in-creases in N deposition will lead to nutrient imbalance in lichens and that nitrogen enrichment will change these five lichen species from being N limited to being P *** research will be of value in the conservation of lichen diversity in the Shennongjia Nature Reserve(China).

关键词： nitrogen deposition lichens N:P ratios Shennongjia phosphomonoesterase activity

Home range and seasonality of Yunnan snub-nosed monkeys

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Integrative Zoology 2009年第2期4卷 162-171页

作者： Baoping REN ming LI Yongcheng LONG Ruidong WU Fuwen WEI Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijingChina The Nature Conservancy China ProgramKunmingYunnanChina

Home range studies are essential for understanding an animal’s behavioral ecology and for making wildlife conservation *** home range of a group of Yunnan snub-nosed monkeys(Rhinopithecus bieti Milne-Edwards,1897)was estimated using a global positioning system collar from December 2003 to October 2004 in northern Yunnan Province,*** measure the ranging area of the study group 1291 animal locations were *** on the 100%minimum convex polygon method,the home range size was approximately 32.8 km2;based on the grid-cell method it was approximately 17.8 km2 using a 250-m grid and 23.3 km2 using a 500-m *** assessed seasonal changes in the home range of this monkey population and found a different ranging pattern of from earlier *** range size was calculated as 4.80±5.81 ha(mean±standard deviation),with a range of 45.66 ha(0.01–45.67 ha).

关键词： collar conservation global positioning system home range Rhinopithecus bieti.

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辐照降解技术应用及影响因素分析

核农学报 2008年第1期22卷 70-73页

作者：谢芳哈益明王锋中国农业科学院农产品加工研究所

辐照降解技术作为辐照技术的一个分支,近年来获得了较快的发展。本文概述了辐照降解技术在减少动物源性食品中兽药残留、植物源性产品辐照降解加工、环境污染治理方面的应用现状。并就辐照降解技术的影响因素、机制和辐解产物的分析方... 详细信息

辐照降解技术作为辐照技术的一个分支,近年来获得了较快的发展。本文概述了辐照降解技术在减少动物源性食品中兽药残留、植物源性产品辐照降解加工、环境污染治理方面的应用现状。并就辐照降解技术的影响因素、机制和辐解产物的分析方法等内容加以综述。

关键词：辐照降解影响因素辐解产物

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γ射线对赭曲霉毒素A的辐照降解与产物分析

食品科学 2010年第11期31卷 320-324页

作者：迟蕾哈益明王锋中国农业科学院农产品加工研究所北京100193

介绍了赭曲霉毒素A的毒性及其在我国农产品中的污染状况,在分析辐照降解技术优点的基础上,与赭曲霉毒素的传统降解方法进行了比较;结合国内外各类真菌毒素辐照降解的研究进展,针对γ射线对赭曲霉毒素A的辐射降解研究和产物分析方法进行... 详细信息

介绍了赭曲霉毒素A的毒性及其在我国农产品中的污染状况,在分析辐照降解技术优点的基础上,与赭曲霉毒素的传统降解方法进行了比较;结合国内外各类真菌毒素辐照降解的研究进展,针对γ射线对赭曲霉毒素A的辐射降解研究和产物分析方法进行综述。

关键词： γ射线降解赭曲霉毒素A 产物分析