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31.
:In
accordance with the problems, occurred in the mountainous city's construction, especially
the crises such as the destruction of ecological and humanistic environment, the loss of
traditional culture and characteristics and the disorder of urban structure, this paper
discusses the distinctive landscape characteristic of mountainous city thoroughly. 相似文献
32.
Chen Qigao Feng Ya 《保鲜与加工》1993,(1)
This paper analyses the thermal moist characteristics of the hull layer beside an air layer at lower temperature in an envelope for a cold storage and presents a new method of waterproof by air layer. With test data from engineering practice, the theory on the barrier of self moisture proof at the surface sublayer of the hull layer in an attic on a cold storage is proven. The dried zone about three phase point is confirmed. It is a new knowledge for thermophysics on thermal design of a cold storage with an optimum thermal performance. 相似文献
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35.
优质独本菊和多头菊规模化栽培技术试验 总被引:1,自引:0,他引:1
以独本菊和多头菊为研究对象,对其进行了育苗和栽培试验。结果表明:间歇式全光雾照扦插出的苗品质好,省时省事,B9和多效唑结合使用矮化效果好,且垄作套盆比平地套盆栽培效果好,有利于规模化生产。 相似文献
36.
Toshitaka KANEI Munetaka IWATA Hiroaki KAMISHINA Takuya MIZUNO Sadatoshi MAEDA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(1):25
C-C chemokine receptor 7 (CCR7) contributes to cell homing to lymph nodes (LNs). Recent studies reported that CCR7 is also expressed in tumor cells, which correlates with LN metastasis in various cancers. However, the expression of CCR7 in tumor cells is unknown in dogs due to the lack of appropriate antibodies. In the present study, a fusion protein of C-C chemokine ligand 19 (CCL19) was employed as an alternative method to CCR7 antibodies. The fusion CCL19 protein specifically detected CCR7 expressed in canine lymphoma cell lines, which showed active chemotaxis to both canine and mouse ligands. The present study will help further research on the involvement of canine CCR7 in LN metastasis. 相似文献
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38.
Sanja Radman Lara imek Sanja Babi Ana-Marija Ciko Rozelindra o-Rakovac Stela Joki Igor Jerkovi 《Marine drugs》2022,20(1)
Ericaria crinita and Ericaria amentacea from the Adriatic Sea (Croatia) were investigated with respect to the presence of less-polar compounds for the first time after fractionation by solid-phase extraction (SPE). The composition of less-polar fractions of freeze-dried E. crinita (FdEc) and E. amentacea (FdEa) were analyzed by high-performance liquid chromatography–high-resolution mass spectrometry with electrospray ionization (UHPLC-ESI-HRMS). The major identified compounds were: amides of higher aliphatic acids (palmitoleamide, linoleamide, palmitamide, oleamide and erucamide) and related compounds, carotenoid (fucoxanthin), chlorophyll derivatives (pheophytin a and b and their derivatives) and higher terpenes (loliolide, isoamijiol with its oxidation product), β-stigmasterol and (3β,6α)-14-methylergosta-8,24(28)-diene-3,6-diol). The toxic effects observed on the less-polar fractions obtained from Ericaria species on zebrafish Danio rerio embryos could be associated with the high abundance of all five detected amides. The antioxidant activity of the fractions was evaluated by means of five independent assays, including the reduction of the radical cation (ABTS), the oxygen radical absorbance capacity (ORAC), ferric-reducing antioxidant power (FRAP), the 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assay and the Folin–Ciocalteu method. A higher antioxidant activity of E. amentacea in comparison to that of the E. crinita fractions was found with IC50 concentrations of 0.072 and 1.177 mg/mL, respectively. The correlation between the activity and the chemical composition revealed that the synergistic effect of different compounds impacted their antioxidant response. 相似文献
39.
引进模糊向量空间的不变子空间的定义,研究了在模糊变换下的模糊向量空间的不变子空间的性质. 相似文献
40.
论大学生社会实践在建设社会主义新农村中的作用 总被引:11,自引:0,他引:11
张开晃 《河北农业大学学报(农林教育版)》2006,8(4):66-68
大学生社会实践活动作为高校人才培养与社会服务的重要环节,在促进经济社会发展中发挥了重要作用。面对社会主义新农村建设的新形势,本文阐述了进一步推进大学生社会实践活动对于增创农村经济效益,推进农村精神文明建设,建立健全农村社会保障制度,构建农村和谐的人与人、人与自然间的关系等的战略意义。 相似文献