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复合技术制备锂二次电池电极材料

电池 2003年第1期33卷 47-50页

作者：吴宇平 Rahm elke Holze Rudolf Department of Electrochemistry Institute of ChemistryChemnitz University of Technology

复合技术是进一步提高材料的物理化学性能和/或降低成本的有效方法之一,早就应用于锂二次电池中。综述了最近几年来复合技术在制备锂二次电池电极材料方面的进展。这些电极材料包括负极材料如碳基负极、锡基氧化物负极和新型的合金负极... 详细信息

复合技术是进一步提高材料的物理化学性能和/或降低成本的有效方法之一,早就应用于锂二次电池中。综述了最近几年来复合技术在制备锂二次电池电极材料方面的进展。这些电极材料包括负极材料如碳基负极、锡基氧化物负极和新型的合金负极、以及无机和有机正极材料。复合的方法包括包覆、混合、沉积等。通过复合,提高了天然石墨的循环性能,降低了无定形碳在第1次循环的不可逆容量并改进了循环性能,改善了合金负极材料的循环寿命,明显提高了无机正极材料的高温性能及循环性能,并使有机正极材料的循环性能达到可实用化的水平。随着复合技术的不断发展,一些新的电极材料将不断诞生,其它类型锂二次电池的商品化将为期不远。

关键词：复合技术制备锂二次电池电极材料碱性蓄电池

The Seed Water Sorption Isotherm and Antioxidant-Defensive Mechanisms of <i>Hordeum vulgare</i>L. Primed Seeds

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American Journal of Plant Sciences 2018年第12期9卷 2385-2407页

作者： Pinpinatt Junhaeng Pitipong Thobunluepop Wanchai Chanprasert Damrongvudhi Onwimol Sutkhet Nakasathien elke Pawelzik Department of Agronomy Faculty of Agriculture Kasetsart University Bangkok Thailand Division of Quality of Plant Products Department of Crop Sciences Faculty of Agricultural Sciences Georg-August-Universit&auml t Gö ttingen G&ouml ttingen Germany

The key successful for seed priming technique was the management of seed imbibition process. This study was aimed to indicate the seed moisture sorption characteristics of Hordeum vulgare L. cv. Samerng 2 in relation to the seed priming technique and its effect on the seed qualities. The experiment was designed by Completely Randomized Design (CRD) with four replications. Seed hydro-priming technique was done under 25 degree Celsius, and 40% - 60% RH. Barley seed moisture content was determined every hour after imbibition for 24 hours. Then, primed barley seed qualities were evaluated at 6, 8, 10, 12, 14, and 16 hours of hydrotime. The results revealed that barley seeds were imbibed rapidly from 10.55% to 37.69% seed moisture content during 0 - 9 hours of imbibition. The constantly seed moisture content was continued until 17 hours of imbibition. Radicle was protruded with 42.74% seed moisture content. Seed moisture sorption characteristic equation was Y = 0.0055x3- 0.267x2 + 4.5931x + 13.348. Coefficient of determination (R2) was 0.916. Primed seed germination was not affected by hydrotime. Primed seeds were improved in speed of germination and seedling growth rate. The best primed barley seed vigorous was noted at 14 - 16 hours of hydrotime. In addition, catalase activity (CAT) and superoxide dismutase activity (SOD) were not significantly different for non-primed and 14 - 16 hours primed seeds. However, lipoxygenase activity (LOX) was increased and malondialdehyde (MDA) content was decreased for 14 - 16 hours primed seeds. Subsequently, 14 - 16 hours primed barley seeds can maintain high seed germination and vigor for 8 - 12 months under 5 degree Celsius. Thus, it could be concluded that hydro-priming for 14 - 16 hours enhances barley seed quality by reducing germination time, induced defenses mechanism, and could be stored for 8 - 12 months.

关键词： Seed Moisture Sorption Characteristic Barley Seed Hydro-Priming Seed Germination Speed of Germination Storability Defenses Mechanism

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移动传染病学实验室

实验与分析 2014年第6期 28-29页

作者： elke Oleson

车载移动流行性病学实验室的应用污染物对人类生存环境的威胁是一个急待解决的问题。作为用来监测化学产品的重要工具，联邦当局将样品收编到一个环境样品库。

关键词：实验室传染病学移动人类生存环境环境样品化学产品流行性污染物

Molecular classification of colorectal carcinomas:The genotype-to-phenotype relation

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World Journal of Gastroenterology 2013年第45期19卷 8163-8167页

作者： elke Kaemmerer Christina Klaus Min Kyung Jeon Nikolaus Gassler Institute of Pathology RWTH Aachen University 52074 Aachen Germany

Colorectal carcinomas(CRCs)are frequently found in industrialized countries and lead to a high incidence of malignancy-related *** by histomorphological features,CRCs and their pre-invasive lesions are quite *** underlying molecular mechanisms include genomic instability,genomic mutation of tumor suppressor genes or oncogenes,epigenetic changes,and the microRNA *** molecular mechanisms are guided by repeated clonal *** genotype-to-phenotype relation is assumed to be the great challenge of cancer research and the development of effective targeted *** present a strong genotype-to-phenotype relation is characterized only for a minority of ***,the molecular characterization of CRCs is essential to interpret histological patterns and to identify prognostic groups as well as patients for targeted therapy.

关键词： Carcinogenesis Colorectal cancer Molecular pathology

Coincidence of active Crohn's disease and florid endometriosis in the terminal ileum: A case report

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World Journal of Gastroenterology 2013年第27期19卷 4413-4417页

作者： elke Kaemmerer Maren Westerkamp Reinhard Kasperk Gerhard Niepmann Axel Scherer Nikolaus Gassler Department of Pediatrics and Institute of Pathology RWTH Aachen University Department of Surgery Luisenhospital Aachen Department of Radiology Luisenhospital Aachen Institute of Pathology RWTH Aachen University

Crohn's disease (CD), a variant of chronic inflammatory bowel disease, frequently affects the terminal ileum and coecal region. The clinical symptoms are often subtle and depend on the inflammatory activity of disease. In women of child-bearing age, florid intestinal endometriosis can simulate CD. Moreover, current pathophysiological concepts include intestinal endometriosis as a putative founder lesion for consecutive CD establishment. The report summarizes clinical and histomorphological data of a 35-year-old woman with the rare coincidence of florid intestinal endometriosis and CD both affecting the terminal ileum. The patient was suffering over 10 years from strong abdominal disorders including constipation, diarrhea, weight loss, and diffuse abdominal pain. In magnetic resonance imaging-Sellink, strong inflammation and intestinal obstruction of the terminal ileum were found. The laparoscopy revealed further evidence for existence of an inflammatory disease like CD, but brownish spots on the peritoneum were found indicative for endometriosis. Surgical resection of the terminal ileum and the coecal segment was performed followed by histopathological investigations. In transmural sections of the terminal ileum, histomorphological features of florid endometriosis intermingled with florid CD was found. The diagnostic findings were substantiated with a panel of immunohistological stainings. In conclusion, the findings demonstrate that florid endometriosis persists in florid CD lesions and the putative link between intestinal endometriosis and CD is more complex than previously assumed.

关键词： Crohn’s diseases Intestinal endometriosis Pathogenesis

Collagen/hyaluronan based hydrogels releasing sulfated hyaluronan improve dermal wound healing in diabetic mice via reducing inflammatory macrophage activity

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Bioactive Materials 2021年第12期6卷 4342-4359页

作者： Sophia Hauck Paula Zager Norbert Halfter elke Wandel Marta Torregrossa Ainur Kakpenova Sandra Rother Michelle Ordieres Susann Räthel Albrecht Berg Stephanie Möller Matthias Schnabelrauch Jan C.Simon Vera Hintze Sandra Franz Department of Dermatology Venerology und AllergologyLeipzig University04103LeipzigGermany Institute of Materials Science Max Bergmann Center for BiomaterialsTechnische Universitǎt Dresden01069DresdenGermany Biomaterials Department INNOVENT e.V.JenaGermany

Sustained inflammation associated with dysregulated macrophage activation prevents tissue formation and healing of chronic *** of inflammation and immune cell functions thus represents a promising approach in the development of advanced therapeutic *** we describe immunomodulatory hyaluronan/collagen(HA-AC/coll)-based hydrogels containing high-sulfated hyaluronan(sHA)as immunoregulatory component for the modulation of inflammatory macrophage activities in disturbed wound *** sHA downregulates inflammatory activities of bone marrow-derived and tissue-resident macrophages in *** further affects macrophage-mediated pro-inflammatory activation of skin cells as shown in skin ex-vivo *** a mouse model of acute skin inflammation,intradermal injection of sHA downregulates the inflammatory processes in the *** is associated with the promotion of an anti-inflammatory gene signature in skin macrophages indicating a shift of their activation *** in vivo translation,we designed HA-AC/coll hydrogels allowing delivery of sHA into wounds over a period of at least one *** immunoregulatory capacity was analyzed in a translational experimental approach in skin wounds of diabetic db/db mice,an established model for disturbed wound *** sHA-releasing hydrogels improved defective tissue repair with reduced inflammation,augmented pro-regenerative macrophage activation,increased vascularization,and accelerated new tissue formation and wound closure.

关键词： 4-6):sulfated hyaluronan Macrophages Immunomodulation Chronic wounds Hydrogel Skin inflammation

Relationship of Grain Fructan Content to Degree of Polymerisation in Different Barleys

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Food and Nutrition Sciences 2014年第6期5卷 581-589页

作者： Csilla Nemeth Annica A.M.Andersson Roger Andersson elke Mangelsen Chuanxin Sun Per Aman Department of Food Science BioCentreSwedish University of Agricultural Sciences(SLU)UppsalaSweden Department of Plant Biology and Forest Genetics BioCentreSwedish University of Agricultural Sciences(SLU)UppsalaSweden

Fructans are important in the survival of plants and also valuable for humans as potentially health promoting food ingredients. In this study fructan content and composition were determined in grains of 20 barley breeding lines and cultivars with a wide variation in chemical composition, morphology and country of origin, grown at one site in Chile. There was significant genotypic variation in grain fructan content ranging from 0.9% to 4.2% of grain dry weight. Fructan degree of polymerisation (DP) was analysed using high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD). Changes in the distribution of different chain lengths and the pattern of structures of fructan were detected with increasing amount of fructan in the different barleys. A positive correlation was found between fructan content and the relative amount of long chain fructan (DP > 9) (r = 0.54, p = 0.021). Our results provide a basis for selecting promising barley lines and cultivars for further research on fructan in barley breeding with the aim to produce healthy food products.

关键词： Fructan Barley Hordeum vulgare L.

由D、L-苯丙乳酸盐消旋混合物酶法生产L-苯丙氨酸

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氨基酸和生物资源 1988年第2期16卷 43-49页

作者： elke Schmidt 毛绍麟武汉大学生物系

本文研究了在酶膜反应器中由D.L苯丙乳酸盐消旋混合物生产L-苯丙氨酸。反应的第一步消旋混合物在羟基异己酸脱氢酶作用下,脱氢生成本丙酮酸;第二步苯丙酮酸在苯丙氨酸脱氨酶作用下,还原胺化成L-苯丙氨酸。从化学计量来看,上述两步反应... 详细信息

本文研究了在酶膜反应器中由D.L苯丙乳酸盐消旋混合物生产L-苯丙氨酸。反应的第一步消旋混合物在羟基异己酸脱氢酶作用下,脱氢生成本丙酮酸;第二步苯丙酮酸在苯丙氨酸脱氨酶作用下,还原胺化成L-苯丙氨酸。从化学计量来看,上述两步反应均需要辅酶参加。第一步需要NAD,第二步需要NADH,在此反应中,辅酶可以直接再生而起到催化作用。由于铺酶被共价结合到聚乙二醇—2000上,所以铺酶就类似于其它三种酶一样保留在反应器中。为了由D.L-本丙乳酸盐能不断连续地生产L-苯丙氨酸,我们设计了反应动力学及反应器体系模型。按照上述模型,我们可以计算出反应器中三种酶的最适比率,辅酶的最适浓度,以及投料中苯丙酮酸的最适浓度。采用这一程序,我们用底物浓度为50mM D.L-苯芮乳酸盐,可获得28克/升L-苯丙氨酸。

关键词： L-苯丙氨酸乳酸盐消旋苯丙酮酸酶法生产还原胺化膜反应器体系模型共价结合脱氨酶

Dissociating Improvement of Attention and Intelligence during Written Language Acquisition in Adults

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International Journal of Intelligence Science 2011年第2期1卷 17-24页

作者： Steffen Landgraf Reinhard Beyer Ann Pannekamp Gesa Schaadt Darina Koch Manja Foth elke van der Meer 不详

About one tenth of the world’s population cannot read and write sufficiently. Cognitive abilities, such as selective attention and crystallized as well as fluid intelligence, have been defined as crucial factors for the acquisition of written language skills. However, it is unclear whether these abilities are necessary also for the alphabetization of adults. Before and after a one-year alphabetization course, we compared the attention and intelligence of 47 illiterate individuals to 41 matched literate controls who did not take part in the alphabetization course. Illiterate individuals improved in selective attention and crystallized intelligence from before to after the alphabetization course;however, they did not reach the same level of functioning as literate controls. In addition, the fluid intelligence of illiterates did not improve. More importantly, when controlling for attention improvement, we found that improvement in crystallized intelligence was associated with alphabetization above and beyond the influence of attention. Our results suggest that alphabetization is closely related to improvements in attention and crystallized intelligence. Specifically, socio-cultural, knowledge- specific learning processes improve during the acquisition of written language skills and may not depend on only the enhancement of the ability to attend to relevant stimuli. Alphabetization programs may, therefore, benefit from distinct considerations of attentional, intellectual, and literacy related skill acquisitions.

关键词： Alphabetization Course Illiterate Adults Crystallized Intelligence Fluid Intelligence Attention Written Language Acquisition