| 231. |
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| 232. |
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| 233. |
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| 234. |
- Ling, Qiu, et al.
(författare)
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The application of vegetation structure information in biotope mapping models towards urban biodiversity
- 2010
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Ingår i: Acta Ecologica Sinica. - 1000-0933. ; 30, s. 3688-3699
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Tidskriftsartikel (refereegranskat)abstract
- Former models of biotope mapping have not taken enough information about temporal and spatial vegetation structure into consideration. It is shown in a number of studies that vegetation structure has an impact on aspects of biodiversity. The purpose of this study is thus to design a modified urban biotope mapping model that includes temporal and spatial vegetation structure in order to obtain more information concerning urban biodiversity. A refined model was developed based on a biotope classification, and applied to a green structure system in Helsingborg in southern Sweden. It includes four parameters of vegetation structure: continuity of vegetation cover, age of dominant trees, horizontal structure, and vertical structure. The major green structure sites were determined by interpretation of panchromatic aerial photographs assisted with a field survey. A set of biotope maps was constructed on the basis of each level of modified classification. By means of identifying continuity of woodland using ancient woodland indicator species (AWIS), and distribution of animals in the green space in relation to vegetation structure, the results indicate that some biotopes with a number of AWI species are long-continuity woodlands with high or potentially high biodiversity value, and that the spatial vegetation structure and age of stands influence the richness and abundance of the avian fauna and rabbits. It is concluded that the modified biotope mapping involving both temporal and spatial vegetation structures is an important methodology when investigating.
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| 235. |
- Lions, Catherine, 1960-
(författare)
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Nokia : a financial story
- 2014
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Ingår i: Friends of Accounting. - CHINA. - 1004-5937. ; 18:24, s. 127-128
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Tidskriftsartikel (refereegranskat)
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| 236. |
- Liu-Helmersson, Jing, et al.
(författare)
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瓦尔多的原住民研究—瑞典于默奥大学萨米族人研究中心 : [Indigenous Research at Várdduo: Centre for Sami research, Umeå University, Sweden]
- 2022
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Ingår i: Journal of Arctic Studies. - Liaocheng, Shandong Province, China : The Arctic Studies Center (ASC). ; 2, s. 341-351, s. 341-351
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Tidskriftsartikel (refereegranskat)abstract
- Várdduo – The Centre for Sami Research was established in the year 2000 under the Faculty of Arts. Umeå University has expanded its Indigenous research area, from Sami languages and culture at the beginning (1975), to four areas today: Education and Language, Health and Living Conditions, Land and Water, Culture and History. This essay introduces the development of indigenous-related research at Umeå University with a focus on the research from Várdduo in the past 20 years. Today Várdduo serves as a hub for active expansion of research related to Indigenous issues at Umeå university to local, national and international arenas. Indigenous research at Umeå University/Várdduo, although still mainly on Sámi issues, has experienced a development characterized by fast growth, diversity, interdisciplinarity and increasing international commitment
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| 237. |
- Liu, Shichao, et al.
(författare)
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一种β-内酰胺类抗生素的酶热检测方法
- 2019
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Ingår i: Journal of Shanxi University (Natural Science Edition). ; :2021-02
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Tidskriftsartikel (refereegranskat)abstract
- The penicillinase thermistor biosensor（Penicillinase sensor） was developed for the rapid monitoring of blood penem antibiotics concentration and rapid identification of extraneous penicillinase in milk on site.However, the wide application of the penicillinase thermistor biosensor was limited due to its intrinsic poor activity to hydrolyze cephem and carbapenem antibiotics.The recently identified carbapenemase New Delhi metallo-beta-lactamase 1（NDM-1） is able to hydrolyze all commercially available β-lactam antibiotics in high efficacy.We coupled the NDM-1 and the enzymatic thermistor biosensor to develop a NDM-1 thermistor biosensor（NDM-1 sensor） by the installment of the enzymatic thermistor with an enzyme column loaded with NDM-1 conjugated CPG beads.The NDM-1 sensor shows high response activity to Piperacillin（PIP）,Ceftriaxone（CTRX）, and Meropenem（MEM）, and the response activity of the NDM-1 sensor to these three β-lactam antibiotics are all Zn2+ dependent.Moreover, the response activity of the NDM-1 sensor to Penicillin G（P）, PIP, Cefazolin（CZO）, CTRX, Cefepime（FEP） and MEM all linearly correlated with antibiotic concentration from 31.25 to 1 000 mg/L.Within pH from 6.0 to 8.0, the optimal response activity of the NDM-1 sensor to P,PIP, CZO, CTRX and FEP are found at pH 6.5, while the optimal response activity of the NDM-1 sensor to MEM is found at pH8.0.These data indicate that the featured activity of NDM-1 was well maintained after conjugation on CPG beads, and NDM-1 sensor is capable to quantitate three classes of β-lactam antibiotics including penem, cephem and carbapenem within a wide concentration range.
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| 238. |
- Liu, Xiao, et al.
(författare)
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Comparison study on LES combustion models in diffusion flame
- 2018
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Ingår i: Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University. - 1006-7043. ; 39:3, s. 496-502
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Tidskriftsartikel (refereegranskat)abstract
- This study comparatively analyzes the calculation performances of different large-eddy simulation (LES) combustion models in a diffused flame simulation to investigate the performances of different LES-turbulent combustion models. The flamelet/progress variable (FPV), partially stirred reactor (PaSR), and transport joint possibility density function (PDF) combustion model are adopted to perform a numerical simulation analysis for Flame D in the Sandia Lab. The comparison between the calculation results and the test data shows that the three models can properly simulate the diffused flame. The transport PDF model based on the Eulerian stochastic field method can realize better results, especially the forecast for the intermediate radicals (OH) and the pollutant emissions (NO). However, the calculation volume is huge. The calculation speed and precision of PaSR are acceptable. The FPV method can save much CPU time, and has great value in engineering applications.
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| 239. |
- Liu, Yu-peng, et al.
(författare)
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应用酶热生物分析仪快速测量血糖的研究分析
- 2013
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Ingår i: Journal of Clinical and Experimental Medicine. ; 12:8, s. 579-581
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Tidskriftsartikel (refereegranskat)abstract
- Objective To compare the enzyme thermistor bioanalysis equipment with blood glucose meter which is analyzed by automatic biochemical analyzer, validate the correct rate of this equipment. The long-term aim of the project was to develop a prototype for a bedside monitor system for semi-continuous monitoring of the blood glucose concentration. This was made possible by using the special advantage of the thermal sensor technique in combination with the adjustment of flow. Methods 150 patients were collected in our department. The glucose level was determined using a single channel enzyme thermistor device. Then the results were compared with lab biochemistry analysator. Results There was no significant difference between these two methods (P>0.05). The measuring method with single channel enzyme thermistor device is a reliable method in determining blood glucose level. Single channel enzyme thermistor keep a coincidence with automatic biochemical analyzer. The assay cycle time was 3 minutes. Comparative analysis between our device and the clinical system device showed an excellent correlation for 150 patient blood samples. The device was stabile for hundreds of injections over a period of 45 days. Conclusion Determined glucose in whole blood using a single channel Enzyme Thermistor device can be used to assess the severity of an illness and for evaluating therapeutic efficacy. The ability of the device to analyze whole blood without any pretreatment makes it possible to develop real-time analysis.
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| 240. |
- Ljung, Anna-Lena
(författare)
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铁矿石颗粒干燥数值模型
- 2013
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Ingår i: Drying Technology & Equipment. - 1727-3080. ; 11:3, s. 57-59
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Tidskriftsartikel (refereegranskat)
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