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| 1 | 中国CH_4排放量的估算显示文摘1987—1989年用自动连续采样分析设备对杭州地区的稻田CH_4排放进行了三年连续观测,1988—1990年用定期采样、分析方法对四川乐山地区的稻田CH_4排放进行了三年观测.发现稻田CH_4排放率有很大的日变化、季节变化和年际变化,这些变化主要是由土壤特性、水稻生长状况以及气象条件的变化造成的.不同地区稻田CH_4排放率差别很大,变化规律也不同,这种差别主要是由土壤特性,水稻品种及气候条件的差别造成的.根据现有观测资料,估计中国稻田CH_4年排放总量为17×10^(12)g.对沼气池的CH_4泄漏进行了三年系统观测研究,发现沼气池泄漏变化范围很大,但泄漏量总起来都很小,中国1000万个沼气池不构成大气CH_4的重要源.根据沼气池的泄漏估计了农村堆肥的CH_4排放量为3.2×10^(12)g/a;根据城市、稻田附近和沙漠地区大气CH_4浓度的测量结果推算了城市CH_4排放量;根据反刍动物消耗食物总量估计了反刍家畜的CH_4排放量;根据瓦斯排放资料估计了煤矿CH_4排放量;根据文献资料估计了中国天然湿地的CH_4排放量.最后估计了中国各种源的CH_4排放总量及未来变化趋势.1988年中国CH_4排放总量为40×10^(12)g,其中一半以上来自稻田.2000年中国CH_4排放总量可达45×10^(12)g,主要是反刍动物和煤矿排放量增加. | 王明星 戴爱国 黄俊 任丽新 沈壬兴 H. Schutz H. Renneuberg W. Seiler R. A. Rasmussen M.A.K. Khalil | 1993 | 大气科学1993,17,1: | 61 |
| 2 | Phytate:impact on environment and human nutrition.A challenge for molecular breeding显示文摘Phytic acid (PA) is the primary storage compound of phosphorus in seeds accounting for up to 80% of the total seed phosphorus and contributing as much as 1.5% to the seed dry weight. The negatively charged phosphate in PA strongly binds to metallic cations of Ca, Fe, K, Mg, Mn and Zn making them insoluble and thus unavailable as nutritional factors. Phytate mainly accumulates in protein storage vacuoles as globoids, predominantly located in the aleurone layer (wheat, barley and rice) or in the embryo (maize). During germination, phytate is hydrolysed by endogenous phytase(s) and other phosphatases to release phosphate, inositol and micronutrients to support the emerging seedling. PA and its derivatives are also implicated in RNA export, DNA repair, signalling, endocytosis and cell vesicular trafficking. Our recent studies on purification of phytate globoids, their mineral composition and dephytinization by wheat phytase will be discussed. Biochemical data for purified and characterized phytases isolated from more than 23 plant species are presented, the dephosphorylation pathways of phytic acid by different classes of phytases are compared, and the application of phytase in food and feed is discussed. | Lisbeth BOHN Anne S. MEYER Sren K. RASMUSSEN | 2008 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2008,9,3: | 30 |
| 3 | 板蓝根低极性流分的分离及其免疫活性显示文摘目的 :进行板蓝根低极性流分及其亚流分的分离 ,并研究其免疫活性。方法 :用快速低压干柱柱层析从板蓝根中分离出一个低极性流分及其一组亚流分 ;用化学发光法检测其对人多形核细胞化学发光的影响。结果 :板蓝根低极性流分具有双向免疫活性 ,在低浓度时具有激活作用 ,在高浓度时具有抑制作用 ;而亚流分的免疫活性并未因其纯度的提高而相应提高。结论 :板蓝根低极性流分及其亚流分含有抗炎成分。 | 秦箐 贺海平 Soren Brogger Christensen Hasse Bonde Rasmussen Arsalan Kharazmi 陈鸣 | 2001 | 中国临床药学杂志2001,10,1: | 30 |
| 4 | 成都平原稻田甲烷排放的实验研究显示文摘根据1996~1999年四个稻季的观测资料,分析了成都平原单季稻甲烷排放的季节变化和年际变化特征。结果表明:在水稻生医季节甲烷排放通量变化很大,在分蘖期和成熟期一般会出现峰值。年际间的通量变化也很大,其年均排放通量的变化范围在2.35~33.95%mgm-2h-1之间。4年的平均排放通量为12mgm-2h-1,与四川乐山的7年平均值30mgm-2h-1相比,存在着明显的地区差异。同时分析讨论了温度、施肥、水稻品种、土壤氧化还原电位(Eh)以及稻田水位等诸多因素对稻田甲烷排放的影响。结果表明:在成都平原水稍生长季节的平均气温对CH4的平均排放通量影响不大;而气温对CH4排放的日变化有相对重要的影响,但气温对甲烷排放日变化的影响与水稻植物体的生长阶段有关;发现了水稻植物体(根、茎、叶)重量对CH4排放的重要作用。讨论了合理使用肥料和施肥量,控制水位和Eh值对稻田CH4的减排作用,提出优化组合诸影响因子,以充分发挥其减排潜力。 | 任丽新 王庚辰 张仁健 段长麟 M. A. K. Khalil M. J. Shearer R. A. Rasmussen R. W. Dalluge | 2002 | 大气科学2002,26,6: | 20 |
| 5 | Fuzzy logic based coordinated control of battery energy storage system and dispatchable distributed generation for microgrid显示文摘Microgrid is a good option to integrate renewableenergy sources (RES) into power systems. Inorder to deal with the intermittent characteristics of therenewable energy based distributed generation (DG) units,a fuzzy-logic based coordinated control strategy of a batteryenergy storage system (BESS) and dispatchable DGunits is proposed for the microgrid management system(MMS). In the proposed coordinated control strategy, theBESS is used to minimize active power exchange at thepoint of common coupling of the microgrid for grid-connectedoperation, and is used for frequency control for islandoperation. The efficiency of the proposed controlstrategy was tested by case studies using DIgSILENT/PowerFactroy. | Haoran ZHAO Qiuwei WU Chengshan WANG Ling CHENG Claus Nygaard RASMUSSEN | 2015 | Journal of Modern Power Systems and Clean Energy2015,3,3: | 18 |
| 6 | 国际糖尿病足工作组:糖尿病足溃疡预防指南——《国际糖尿病足工作组:糖尿病足防治国际指南(2019)》的一部分显示文摘国际糖尿病足工作组(IWGDF)1999年发布了关于预防和管理糖尿病足病的循证指南。该指南旨在预防糖尿病患者的足部溃疡,并在2015年,IWGDF对预防指南进行了更新。我们遵循GRADE(grading of recommendations assessment development and evaluation)的评分方法,采用以患者为观察对象、有干预措施、与对照组进行比较、观察结局(patient-intervention-comparison-outcome,PICO)的方法来设计临床问题和关键成果,对医学科学文献进行系统评价,并撰写推荐意见及其理由。这些推荐基于系统评价中发现的证据质量、专家意见,以及益处及危害的权重、患者偏好、可行性和适用性以及与干预相关成本的权衡。我们建议对处于极低溃疡风险的患者每年做一次筛查,了解其是否有周围神经病变和外周血管病变,对高风险人群检查的频率要更高,以筛查其他危险因素。为了预防足溃疡,要对有危险因素的患者进行健康教育,教育患者适当地对足部进行自我护理以及对溃疡前症状进行有效治疗。指导中高危患者穿着合适的治疗鞋,并对其足部皮肤温度进行监测。处方治疗鞋在行走过程中具有明显的减轻足底压力的效果,能够防止足底溃疡复发。急性足溃疡或即将发生的足溃疡保守治疗失败,应考虑手术干预。我们不建议使用神经松解减压术。对高危患者给予综合足部医疗护理,以防溃疡复发。贯彻这些推荐将有助于医疗专业人员对有足溃疡风险的糖尿病患者提供更好的护理,降低糖尿病足溃疡的发生率,使足部健康维持更长的时间即增加无足病的天数,显著减少糖尿病患者和医疗机构的负担。 | Sicco A.Bus Larry A.Lavery Matilde Monteiro-Soares Anne Rasmussen Anita Raspovic Isabel C.N.Sacco Jaap J.van Netten 无 罗颖琪 李炳辉(译) 许樟荣(审校) | 2019 | 感染.炎症.修复2019,20,3: | 14 |
| 7 | 黄芩提取物抗卵巢癌的体外活性研究显示文摘目的 :研究从黄芩中提取获得的化合物黄芩黄酮 A抑制卵巢癌 A2 780细胞生长及对常用抗肿瘤药的体外增效作用。方法 :MTT法测定黄芩黄酮 A的细胞毒作用及与多种抗癌药物作用后对卵巢癌 A2 780细胞的抑制作用 ,集落形成实验观察药物的诱导分化作用 ,PCR- EL ISA试剂盒测定细胞端粒酶活性。结果 :黄芩黄酮 A能抑制 A2 780细胞的增殖 ,其 IC5 0 为 2 0 0 mg/ L,同时黄芩黄酮 A与丝裂霉素 (MMC)、阿霉素 (ADM)、氟尿嘧啶(5 - Fu)、卡铂、羟基喜树碱合用具有相加或协同作用 ,可降低端粒酶活性的表达。结论 :黄芩黄酮 A具有体外抗肿瘤活性 ,对多种化疗药物具有增效作用。 | 秦箐 侯华新 黎丹戎 邱莉 吴华慧 梁永红 Soren Brogger Christensen Hasse Bonde Rasmussen | 2000 | 肿瘤研究与临床2000,12,3: | 13 |
| 8 | 板蓝根高级不饱和脂肪组酸的体外抗人肝癌BEL-7402细胞活性显示文摘目的 :研究板蓝根高级不饱和脂肪组酸体外抗人肝癌BEL 74 0 2细胞的活性。方法 :MTT法测定细胞毒作用 ,集落形成实验观察药物对肝癌细胞增殖的抑制作用 ,PCR ELISA试剂盒测定细胞的端粒酶活性。结果 :板蓝根高级不饱和脂肪组酸能抑制BEL 74 0 2细胞的增殖 ,其IC50 为 0 6mg·mL-1,有促使肿瘤细胞向正常细胞逆转的趋势 ,可降低端粒酶活性的表达。结论 | 侯华新 秦箐 黎丹戎 唐东平 邱莉 吴华慧 Soren BroggerChristensen Hasse Bonde Rasmussen | 2002 | 中国临床药学杂志2002,11,1: | 10 |
| 9 | Toll-like receptor 9 polymorphisms and Helicobacter pylori influence gene expression and risk of gastric carcinogenesis in the Brazilian population显示文摘BACKGROUND Toll-like receptors(TLRs)are the first line of host defense,and are involved in Helicobacter pylori(H.pylori)recognition and activation of both inflammatory and carcinogenic processes.The presence of single nucleotide polymorphisms(SNPs)in genes that activate the immune response may modulate the risk of precancerous lesions and gastric cancer(GC).Among them,Toll-like receptor 9(TLR9)polymorphisms have emerged with a risk factor of infectious diseases and cancer,however the studies are still inconclusive.AIM To evaluate whether TLR9 rs5743836 and rs187084 SNPs contribute to the risk of gastric carcinogenesis,and its influence on mRNA expression.METHODS A case-control study was conducted to evaluate two TLR9 SNPs(TLR9-1237 TCrs5743836 and TLR9-1486 CT-rs187084)in chronic gastritis(CG)and GC patients.A total of 609 DNA samples of peripheral blood[248 CG,161 GC,and 200 samples from healthy individuals(C)]were genotyped by polymerase chain reaction-restriction fragment length polymorphism.All samples were tested for the H.pylori infection using Hpx1 and Hpx2 primers.Quantitative polymerase chain reaction by TaqMan?assay was used to quantify TLR9 mRNA from fresh gastric tissues(48 GC,26 CG,and 14 C).RESULTS For TLR9-1237,the TC+CC or CC genotypes were associated with a higher risk of GC than C[recessive model odds ratio(OR)=5.01,95%confidence interval(CI):2.52-9.94,P<0.0001],and the CG(recessive model OR=4.63;95%CI:2.44-8.79,P<0.0001)groups.For TLR9-1486,an association between the CT+TT genotypes and increased risk of both GC(dominant model OR=2.72,95%CI:1.57-4.72,P<0.0001)and CG(dominant model OR=1.79,95%CI:1.15-2.79,P=0.0094)was observed when compared to the C group.Moreover,the presence of TLR9-1237 TC/CC+TLR9-1486 CC genotypes potentiate the risk for this neoplasm(OR=18.57;95%CI:5.06-68.15,P<0.0001).The TLR9 mRNA level was significantly higher in the GC group(RQ=9.24,P<0.0001)in relation to the CG group(RQ=1.55,P=0.0010)and normal mucosa(RQ=1.0).When the samples were grouped according to the polymorphic genotypes and the presence of H.pylori infection,an influence of TLR9-1237 TC+CC polymorphic genotypes(P=0.0083)and H.pylori infection(P<0.0001)was observed on the upregulation of mRNA expression.CONCLUSION Our findings show that TLR9 rs5743836 and rs187084 polymorphisms are associated with a higher risk of carcinogenesis gastric,and that TLR9 mRNA levels can be modulated by TLR9-1237 TC+CC variant genotypes and H.pylori infection. | Manoela Dias Susi de Matos Lourenco Caroline Lucas Trevizani Rasmussen Spencer Luis Marques Payao Ana Flavia Teixeira Rossi Ana Elizabete Silva Juliana Garcia de Oliveira-Cucolo | 2019 | World Journal of Gastrointestinal Oncology2019,11,11: | 9 |
| 10 | Catatonia:Our current understanding of its diagnosis, treatment and pathophysiology显示文摘Catatonia is a psychomotor syndrome that has been reported to occur in more than 10% of patients with acute psychiatric illnesses. Two subtypes of the syndrome have been identified. Catatonia of the retarded type is characterized by immobility, mutism, staring, rigidity, and a host of other clinical signs. Excited catatonia is a less common presentation in which patients develop prolonged periods of psychomotor agitation. Once thought to be a subtype of schizophrenia, catatonia is now recognized to occur with a broad spectrum of medical and psychiatric illnesses, particularly affective disorders. In many cases, the catatonia must be treated before any underlying conditions can be accurately diagnosed. Most patients with the syndrome respond rapidly to low-dose benzodiazepines, but electroconvulsive therapy is occasionally required. Patients with longstanding catatonia or a diagnosis of schizophrenia may be less likely to respond. The pathobiology of catatonia is poorly understood, although abnormalities in gamma-aminobutyric acid and glutamate signaling have been suggested as causative factors. Because catatonia is common, highly treatable, and associated with significant morbidity and mortality if left untreated, physicians should maintain a high level of suspicion for this complex clinical syndrome. Since 1989, we have systematically assessed patients presenting to our psychiatry service with signs of retarded catatonia. In this paper, we present a review of the current literature on catatonia along with findings from the 220 cases we have assessed and treated. | Sean A Rasmussen Michael F Mazurek Patricia I Rosebush | 2016 | World Journal of Psychiatry2016,6,4: | 7 |
| 11 | Helicobacter pylori and its reservoirs:A correlation with the gastric infection显示文摘Helicobacter pylori(H. pylori) has long been found to cause gastric diseases such as gastritis, gastric ulcers and gastric cancer. The transmission medium of this bacterium has yet to be determined, though several studies have speculated that the oral cavity is a reservoir for H. pylori. Others have also reported that the oral cavity may be a source of both transmission and gastric reinfection; however, such results are controversial. We reviewed the literature and selected studies that report an association among H. pylori detections in the oral cavity(dental plaque, saliva, tongue, tonsil tissue, root canals, oral mucosa) in humans and in animals, as well as in the human stomach. The oral cavity may be considered the main reservoir for H. pylori. There are a correlations between H. pylori infection in the oral cavity and periodontal disease, oral tissue inflammation, H. pylori transmission, and gastric reinfection. We believe that the mouth is a reservoir and that it plays a crucial role in both H. pylori transmission and gastric infection. | Spencer Luiz Marques Payao Lucas Trevizani Rasmussen | 2016 | World Journal of Gastrointestinal Pharmacology and Therapeutics2016,7,1: | 6 |
| 12 | Elevated pro-inflammatory and lipotoxic mucosal lipids characterise irritable bowel syndrome显示文摘AIM:To investigate the pathophysiology of irritable bowel syndrome(IBS)by comparing the global mucosal metabolic profiles of IBS patients with those of healthy controls.METHODS:Fifteen IBS patients fulfilling the Rome Ⅱcriteria,and nine healthy volunteers were included in the study.A combined lipidomics(UPLC/MS)and metabolomics(GC×GC-TOF)approach was used to achieve global metabolic profiles of mucosal biopsies from the ascending colon.RESULTS:Overall,lipid levels were elevated in patients with IBS.The most significant upregulation was seen for pro-inflammatory lysophosphatidylcholines.Other lipid groups that were significantly upregulated in IBS patients were lipotoxic ceramides,glycosphingolipids,and di-and triacylglycerols.Among the metabolites,the cyclic ester 2(3H)-furanone was almost 14-fold upregulated in IBS patients compared to healthy subjects(P=0.03).CONCLUSION:IBS mucosa is characterised by a distinct pro-inflammatory and lipotoxic metabolic profile.Especially,there was an increase in several lipid species such as lysophospholipids and ceramides. | Kajsa Kajander Eveliina Myllyluoma Sinikka Kyrnpalo Martin Rasmussen Pentti Sipponen Ismo Mattila Tuulikki Seppnen-Laakso Heikki Vapaatalo Matej Orei Riitta Korpela | 2009 | World Journal of Gastroenterology2009,15,48: | 5 |
| 13 | A simple interpretation of the surface temperature/vegetation index space for assessment of surface moisture status显示文摘 | Inge Sandholt Kjeld Rasmussen Jens Andersen | 2001 | Remote Sensing of Environment2001,,2: | 5 |
| 14 | Dirichlet Process Gaussian Mixture Models:Choice of the Base Distribution显示文摘In the Bayesian mixture modeling framework it is possible to infer the necessary number of components to model the data and therefore it is unnecessary to explicitly restrict the number of components.Nonparametric mixture models sidestep the problem of finding the'correct'number of mixture components by assuming infinitely many components.In this paper Dirichlet process mixture(DPM) models are cast as infinite mixture models and inference using Markov chain Monte Carlo is described.The specification of the priors on the model parameters is often guided by mathematical and practical convenience.The primary goal of this paper is to compare the choice of conjugate and non-conjugate base distributions on a particular class of DPM models which is widely used in applications,the Dirichlet process Gaussian mixture model (DPGMM).We compare computational efficiency and modeling performance of DPGMM defined using a conjugate and a conditionally conjugate base distribution.We show that better density models can result from using a wider class of priors with no or only a modest increase in computational effort. | Dilan Grür Carl Edward Rasmussen | 2010 | Journal of Computer Science & Technology2010,25,4: | 5 |
| 15 | Assessing soil thickness in a black soil watershed in northeast China using random forest and field observations显示文摘Soil thickness determines the soil productivity in the black soil region of northeast China,which is important for national food security.Existing information on the spatial variation of black soil thickness is inadequate.In this paper,we propose a model framework for spatial estimation of the black soil thickness at the watershed scale by integrating field observations,unmanned aerial vehicle variations of topography,and satellite variations of vegetation with the aid of random forest.We sampled 141 sample profiles over a watershed and identified the black soil thickness based on indices of the mollic epipedon.Topographic variables were derived from a digital elevation model and vegetation variables were derived from Landsat 8 imagery.Random forest was used to determine the relationship between black soil thickness and environmental variables.The resulting model explained 61%of the black soil thickness spatial variation,which was more than twice that of traditional interpolation methods(ordinary kriging,universal kriging and inverse distance weighting).Topographic variables contributed the most toward explaining the thickness,followed by vegetation indices.The black soil thickness over the watershed had a clear catenary soil pattern,with thickest black soil in the low depositional areas and thinnest at the higher elevations that drain into the low areas.The proposed model framework will improve estimates of soil thickness in the region of our study. | Shuai Zhang Gang Liu Shuli Chen Craig Rasmussen Baoyuan Liu | 2021 | International Soil and Water Conservation Research2021,9,1: | 5 |
| 16 | Nutrition in chronic pancreatitis显示文摘The pancreas is a major player in nutrient digestion.In chronic pancreatitis both exocrine and endocrine insufficiency may develop leading to malnutrition over time.Maldigestion is often a late complication of chronic pancreatic and depends on the severity of the underlying disease.The severity of malnutrition is correlated with two major factors:(1)malabsorption and depletion of nutrients(e.g.,alcoholism and pain)causes impaired nutritional status;and(2)increased metabolic activity due to the severity of the disease.Nutritional deficiencies negatively affect outcome if they are not treated.Nutritional assessment and the clinical severity of the disease are important for planning any nutritional intervention.Good nutritional practice includes screening to identify patients at risk,followed by a thoroughly nutritional assessment and nutrition plan for risk patients.Treatment should be multidisciplinary and the mainstay of treatment is abstinence from alcohol,pain treatment,dietary modifications and pancreatic enzyme supplementation.To achieve energy-end protein requirements,oral supplementation might be beneficial.Enteral nutrition may be used when patients do not have sufficient calorie intake as in pylero-duodenalstenosis,inflammation or prior to surgery and can be necessary if weight loss continues.Parenteral nutrition is very seldom used in patients with chronic pancreatitis and should only be used in case of GI-tract obstruction or as a supplement to enteral nutrition. | Henrik Hφjgaard Rasmussen φivind Irtun Sφren Schou Olesen Asbjφrn Mohr Drewes Mette Holst | 2013 | World Journal of Gastroenterology2013,19,42: | 4 |
| 17 | Integrative taxonomy of the Russet Bush Warbler Locustella mandelli complex reveals a new species from central China显示文摘Background: The Russet Bush Warbler Locustella(previously Bradypterus) mandelli complex occurs in mountains in the eastern Himalayas, southern China, Vietnam, the Philippines, and Indonesia. The taxonomy has been debated,with one(L. seebohmi) to four(L. seebohmi, L. mandelli, L. montis and L. timorensis) species having been recognised.Methods: We used an integrative approach, incorporating analyses of morphology, vocalizations and a molecular marker, to re-evaluate species limits in the L. mandelli complex.Results: We found that central Chinese L. mandelli differed from those from India through northern Southeast Asia to southeast China in plumage, morphometrics and song. All were easily classified by song, and(wing + culmen)/tail ratio overlapped only marginally. Both groups were reciprocally monophyletic in a mitochondrial cytochrome b(cytb) gene tree, with a mean divergence of 1.0 ± 0.2%. They were sympatric and mostly altitudinally segregated in the breeding season in southern Sichuan province. We found that the Mt Victoria(western Myanmar) population differed vocally from other L. mandelli, but no specimens are available. Taiwan Bush Warbler L. alishanensis was sister to the L. mandelli complex, with the most divergent song. Plumage, vocal and cytb evidence supported the distinctness of the south Vietnamese L. mandelli idonea. The Timor Bush Warbler L. timorensis, Javan Bush Warbler L.montis and Benguet Bush Warbler L. seebohmi differed distinctly in plumage, but among-population song variation in L. montis exceeded the differences between some populations of these taxa, and mean pairwise cytb divergences were only 0.5–0.9%. We also found that some L. montis populations differed morphologically.Conclusions: We conclude that the central Chinese population of Russet Bush Warbler represents a new species,which we describe herein, breeding at mid elevations in Sichuan, Shaanxi, Hubei, Hunan and Guizhou provinces.The taxonomic status of the other allopatric populations is less clear. However, as they differ to a degree comparable with that of the sympatric L. mandelli and the new species, we elevate L. idonea to species status, and retain L. seebohmi and L. montis as separate species, the latter with timorensis as a subspecies. Further research should focus on different populations of L. montis and the Mt Victoria population of L. mandelli. | Per Alstrom Canwei Xia Pamela C Rasmussen Urban Olsson Bo Dai Jian Zhao Paul J Leader Geoff J Carey Lu Dong Tianlong Cai Paul I Holt Hung Le Manh Gang Song Yang Liu Yanyun Zhang Fumin Lei | 2015 | Chinese Birds2015,,2: | 4 |
| 18 | 柔性直流输电并网风电厂的低电压穿越能力改进(英文)显示文摘To achieve active control of the AC voltage magnitude of wind power plant(WPP)collector network and improve the fault ride-through(FRT)capability,an FRT scheme based on feed forward DC voltage control is presented for voltage source converter-high voltage direct current(VSC-HVDC)connected offshore WPPs.During steady state operation,an open loop AC voltage control is implemented at the WPP-side VSC of the HVDC system so that any possible control interactions between WPP-side VSC and VSC of wind turbine are minimized.Whereas during any grid fault,a dynamic AC voltage reference is made according to both the DC voltage error and AC active current from the WPP collector system,thus ensuring fast and robust FRT of the VSC-HVDC-connected offshore WPPs.Under the unbalanced fault condition in the host power system,the resulting oscillatory DC voltage is directly used in the VSC AC voltage controller at the WPP side so that the WPP collector system voltage also reflects the unbalance in the main grid.Time domain simulations are performed to verify the efficacy of the FRT scheme based on the proposed feed forward DC voltage control.Simulation results show satisfactory FRT responses of the VSC-HVDC-connected offshore WPP under balanced and unbalanced faults in the host power system,as is shown under a serious fault in the WPP collector network. | Ranjan SHARMA Qiuwei WU Seung Tae CHA Kim Hφj JENSEN Tony Wederberg RASMUSSEN Jacob ΦSTERGAARD | 2015 | 电力系统自动化2015,39,3: | 4 |
| 19 | DGGE法检测稻田蓝细菌及硅藻的遗传多态性显示文摘运用对蓝细菌和硅藻 16SrRNA特异的引物对 ,将稻田土壤中提取的总DNA进行PCR扩增后 ,通过DGGE技术对PCR产物进行分析 .结果表明 ,在水稻生长的不同时期 ,稻田蓝细菌及硅藻种群也在变化 ,田间不同位置蓝细菌及硅藻种类也有所不同 。 | 宋铁英 包晓东 郑伟文 Rasmussen Ulla | 2002 | 厦门大学学报(自然科学版)2002,41,5: | 4 |
| 20 | Dispersal behavior correlates with personality of a North American fish显示文摘 | Josh E. RASMUSSEN Mark C. BELK | 2012 | Current Zoology2012,58,2: | 4 |