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Cortisol levels in skimmed milk during the first 22 weeks of lactation and response to short-term metabolic stress and lameness in dairy cows

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Journal of Animal Science and Biotechnology 2015年第4期6卷 485-491页

作者： Katharina Gellrich tanja sigl Heinrich H.D.Meyer Steffi Wiedemann Physiology Weihenstephan Technische Universitaet Muenchen Animal Health Institute of Animal Breeding and HusbandryKiel University

Background： Cortisol is secreted into blood in reaction to acute stress, but also in phases of diminished feed intake and changed animal behavior. As cows do not always show clear signs of discomfort, reliable diagnostic markers could be used to provide information regarding individual cows＇ distress. The objective of this study was to establish an ether free immunoassay for the detection of cortisol and to determine values during the first 22 weeks of lactation. Furthermore, the response in milk cortisol levels was assessed during times of metabolic stress and pain associated symptoms of lameness. Methods： Milk yield and composition, blood serum glucose, NEFA and BHBA as well as milk cortisol were determined in 24 multiparous Holstein-Friesian cows over the course of the first 22 weeks of lactation. Animals were further checked for signs of clinical diseases on a daily basis. Two feed restrictions over three days （FR; 70 % of precious ad libitum intake） were performed during the 4th wk and the 21st wk, respectively. An ELISA for cortisol measurement in easily accessible bovine skimmed milk was established and applied. Results： On the last day of FR in early lactation, a reduction in milk yield and changes in serum metabolites compared to respective previous values were detected. The FR in mid-lactation resulted in no changes in milk production and serum metabolites. Milk cortisol was highest during first wk of lactation and remained on comparable levels thereafter. Milk yield and composition were not influenced by FR. Lameness resulted in enhanced milk cortisol levels. Conclusion： Milk cortisol could be used as an indicator of painful symptoms such as lameness. Higher values of milk cortisol levels during first wk of lactation should be taken into account for interpretation.

关键词： Cortisol Dairy cow ELISA Feed restriction Milk

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过瘤胃保护共轭亚油酸对妊娠后期及泌乳早期奶牛乳成分、乳产量、血液代谢和肝脏基因表达的影响

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中国畜牧兽医 2011年第3期38卷 123-123页

作者： tanja sigl 姜雅慧

共轭亚油酸（CLA）是一类含有共轭双键的十八碳二烯酸所有异构体的统称。本试验旨在研究日粮中添加CLA是否会影响泌乳早期奶牛的乳成分及相关代谢参数。选取饲喂CLA的初产奶牛（试验组）和未饲喂CLA的初产奶牛（处理组）各5头。2周预饲... 详细信息

共轭亚油酸（CLA）是一类含有共轭双键的十八碳二烯酸所有异构体的统称。本试验旨在研究日粮中添加CLA是否会影响泌乳早期奶牛的乳成分及相关代谢参数。选取饲喂CLA的初产奶牛（试验组）和未饲喂CLA的初产奶牛（处理组）各5头。2周预饲期间CLA的添加量为7.5g/d（50%顺-9,反-11CLA和50%反-10,顺-12 CLA）。试验期（1~28 d）CLA的添加量为20 g/d。试验中奶牛CLA的摄入量仅为添加量的61.5%,试验组奶牛乳脂中出现添加的CLA,处理组奶牛乳脂中顺-9,反-11 CLA和反-10,顺-12CLA的含量高于对照组,且处理组奶牛乳脂中饱和脂肪酸的含量有所降低,单不饱和脂肪酸和反式脂肪酸的含量升高。添加顺-9,-反11 CLA和反-10,顺-12 CLA对乳产量、乳成分及血液代谢指标无显著影响;添加CLA不会影响过氧化物酶体受体蛋白PPARα、PPARγ的表达,但可抑制固醇调节蛋白和肝脏组织中肿瘤坏死因子α的表达。试验结果表明,产犊后1周饲喂顺-9,反-11 CLA和反-10,顺-12CLA不会影响血液代谢指标和乳成分;添加CLA会改变乳中脂肪酸的成分（尤其是外源脂肪酸异构体的含量升高）,乳脂中高含量的长链脂肪酸说明泌乳早期添加CLA不会引起脂肪肝的发生。

关键词：共轭亚油酸泌乳早期奶牛顺-9,反-11CLA反-10,顺-12

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Activation of commercial Pt/C catalyst toward glucose electro-oxidation by irreversible Bi adsorption

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Journal of Energy Chemistry 2018年第5期27卷 1446-1452页

作者： Petri Kanninen tanja Kallio Department of Chemistry and Material Science Aalto University P.O. Box 16100 00076 Aalto. Finland Applied Electrochemistry KTH-Royal Institute of Technology Teknikringen 42 10044 Stockholm Sweden

The effect of irreversibly adsorbed Bi on commercial Pt/C catalyst toward glucose electro-oxidation re- action （GOR） in different electrolytes （acidic, neutral, alkaline） is studied. Bi is successfully deposited on Pt/C from Bi3＋ containing acidic solution from 0 to 90% coverage degree. The stability of the Bi layer in acid and alkaline corresponded to previous studies and started to dissolve at 0.7 V and 0.8 V versus re- versible hydrogen electrode （RIIE）, respectively. However, in neutral phosphate buffer the layer showed remarkable stability to at least 1.2V versus RHE. Bi modification at low （20%） and high （80%） coverage showed the highest increase in the activity of Pt/C toward GOR by a factor up to 7 due to the increased poisoning resistance of the modified catalyst. The effect of poisoning was especially reduced at high Bi coverage （80%）, which shows that adsorbate blocked by Bi through the third-body effect is effective. Finally, with or without Bi modification GOR on PtIC was most active in alkaline conditions.

关键词： Glucose electro-oxidation Platinum Bismuth Catalyst poisoning Renewable resources

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Tendril-Based Climbing Plants to Model, Simulate and Create Bio-Inspired Robotic Systems

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Journal of Bionic Engineering 2015年第2期12卷 250-262页

作者： Renato Vidoni tanja Mimmo Camilla Pandolfi Faculty of Science and Technology Free University of Bolzano Piazza universith 3 91 O0 Bolzano Italy European Space Agency-Advanced Concepts Team Estec Noordwjik Netherlands

Bioinspiration can be considered one of the keys for future smart and versatile robotic systems. Plants could be an im- portant source of ideas despite the fact that they have not yet been deeply observed and considered. In this paper, climbing tendril-bearer plants that, by means of irritable filiform organs called tendrils, search for a support, grasp it and climb to gain height, have been used to study and develop an effective climbing robot. The study aimed first to evaluate the main movements and behaviors of the tendril from a biomimetic point of view. The tendril complexity was then simplified, a robotic model was developed and a kinematic simulator was designed and implemented to visualize and evaluate the chosen system. Finally, based on the biological, technical and numerical evaluations, the main tendril behaviors were replicated by proof of concept devices made of smart materials to move towards a practical realization and to replicate the simulated results. The designed proof of concept prototypes showed food repeatability and feasibility.

关键词： climbing plants robotic tendril kinematic model Shape-Memory-Alloy (SMA) grasping

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Synthesis of iron（ll） complexes with asymmetric N2O2 coordinating Schiff base-like ligands and their spin crossover properties

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Frontiers of Chemical Science and Engineering 2018年第3期12卷 400-408页

作者： Wolfgang Bauer tanja Ossiander Birgit Weber Department of Chemistry University of Bayreuth 95440 Bayreuth Germany

The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron（II） complexes were characterized by single crystal X-ray structure analysis. One of the the iron（II） complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.

关键词： iron Schiffbase-like ligands magnetism spin crossover X-ray structures

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Artemisinin and artemisinin derivatives as anti-fibrotic therapeutics

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Acta Pharmaceutica Sinica B 2021年第2期11卷 322-339页

作者： David Dolivo Pamela Weathers tanja Dominko Department of Surgery Northwestern University-Feinberg School of MedicineChicagoIL 60611USA Department of Biology and Biotechnology Worcester Polytechnic InstituteWorcesterMA 01609USA

Fibrosis is a pathological reparative process that can occur in most organs and is responsible for nearly half of deaths in the developed *** considerable research,few therapies have proven effective and been approved clinically for treatment of *** compounds are best known as antimalarial therapeutics,but they also demonstrate antiparasitic,antibacterial,anticancer,and antifibrotic *** we summarize literature describing anti-fibrotic effects of artemisinin compounds in in vivo and in vitro models of tissue fibrosis,and we describe the likely mechanisms by which artemisinin compounds appear to inhibit cellular and tissue processes that lead to *** consider alternative routes of administration of artemisinin for treatment of internal organ fibrosis,we also discuss the potential for more direct oral delivery of Artemisia plant material to enhance bioavailability and efficacy of artemisinin compared to administration of purified artemisinin drugs at comparable *** is our hope that greater understanding of the broad anti-fibrotic effects of artemisinin drugs will enable and promote their use as therapeutics for treatment of fibrotic diseases.

关键词： Fibrosis Artemisia Artemisinin Artesunate Fibroblast Myofibroblast Scar TGF-β

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Types of lime binders in mortars used for the construction of the Ming Great Wall of China and their importance for the development of a conservation strategy

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Built Heritage 2022年第1期6卷 55-75页

作者： tanja Dettmering Shibing Dai Architectural Conservation Laboratory CAUP Tongji University No.1239 Siping RoadShanghai 200092China

The most obvious characteristics of the Ming Great Wall are external masonry walls made of natural stones,bricks and lime *** to the chemical and mineralogical compositions of the original bedding and pointing mortars,dolomitic lime binder was used dominantly in the construction of the Ming Great Wall in provinces such as those around Beijing and ***-rich lime and air lime with low natural hydraulically reactive phases,which are hydrated and react slowly with the carbon dioxide in air to form calcium carbonate,were used in some western *** and microscopic investigations show that both dolomitic and calcium-rich lime mortars are almost *** dolomitic lime mortars are characterised by high strengths,low porosities and dense micro-scale *** most recent conservation principle is to preserve the Ming Great Wall as a ***,the conservation strategy should be redefined in terms of *** some of the damage to the Great Wall is related to reactions between dolomitic lime mortars and air pollutants,calcium-rich lime binders should be used for conservation and even for restoration of those parts of the Great Wall that were originally built with dolomitic *** based on natural hydraulic lime and calcium-rich lime gauged with natural pozzolana might be more compatible than other binders"for the structural consolidation of the ruins of the GreatWall.

关键词： Great Wall Masonry ruins Lime mortars Dolomitic lime Deterioration Conservation

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Modernised Traditional Lime Plasters for Modern Historic Living of Built Heritage:Case Studies from Germany and Reflection for China

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Built Heritage 2019年第1期3卷 26-36页

作者： tanja Dettmering August-Bebel-Schule Berufliche Schule des Kreises Offenbach am MainGermany

Traditional plasters were generally produced until about the middle of the 20^(th) *** traditional plasters,lime plaster in Europe occupies a position of outstanding *** play a key role as a protective and decorative outer layer in the care and rehabilitation of the built *** meet the needs for protecting masonry and living in historic buildings in the modern age,traditional lime plasters can be modified to fulfill technical and aesthetic *** paper makes an assessment of the use of traditional and modern lime plasters in *** rediscovery of lime plaster as a material for use in cultural heritage conservation has led to the application of traditional and modern plasters along with advanced guidelines and standards for their production and *** China,a kind of lime-system has recently been developed that is historically and technically compatible with the types used historically;the new types lend itself well to use in modern conservation.

关键词： traditional plaster lime built heritage modern living in historic structures

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Prediction of the biogas production using GA and ACO input features selection method for ANN model

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Information Processing in Agriculture 2019年第3期6卷 349-356页

作者： tanja Beltramo Michael Klocke Bernd Hitzmann Institute of Food Science and Biotechnology University of HohenheimStuttgart 70599Germany Leibniz Institute for Agricultural Engineering and Bioeconomy Potsdam 14469Germany

This paper presents a fast and reliable approach to analyze the biogas production process with respect to the biogas production *** experimental data used for the developed models included 15 process variables measured at an agricultural biogas plant in *** this context,the concentration of volatile fatty acids,total solids,volatile solids acid detergent fibre,acid detergent lignin,neutral detergent fibre,ammonium nitrogen,hydraulic retention time,and organic loading rate were *** neural networks(ANN)were established to predict the biogas production *** ant colony optimization and genetic algorithms were implemented to perform the variable *** identified the significant process variables,reduced the model dimension and improved the prediction capacity of the ANN *** best prediction of the biogas production rate was obtained with an error of prediction of 6.24%and a coefficient of determination of R2=0.9.

关键词： Ant colony optimization Artificial neural networks Biogas Genetic algorithm

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Exploring visual quality of multidimensional time series projections

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Visual Informatics 2024年第2期8卷 27-42页

作者： tanja Munz-Körner Daniel Weiskopf Visualization Research Center(VISUS) University of StuttgartAllmandring 19StuttgartGermany

Dimensionality reduction is often used to project time series data from multidimensional to two-dimensional space to generate visual representations of the temporal *** this context,we address the problem of multidimensional time series visualization by presenting a new method to show and handle projection errors introduced by dimensionality reduction techniques on multidimensional temporal *** visualization,subsequent time instances are rendered as dots that are connected by lines or curves to indicate the temporal ***,inevitable projection artifacts may lead to poor visualization quality and misinterpretation of the temporal *** projected data points,inaccurate variations in the distances between projected time instances,and intersections of connecting lines could lead to wrong assumptions about the original *** adapt local and global quality metrics to measure the visual quality along the projected time series,and we introduce a model to assess the projection error at intersecting *** serve as a basis for our new uncertainty visualization techniques that use different visual encodings and interactions to indicate,communicate,and work with the visualization uncertainty from projection errors and artifacts along the timeline of data points,their connections,and *** approach is agnostic to the projection method and works for linear and non-linear dimensionality reduction methods alike.

关键词： Time series Multidimensional data Dimensionality reduction Projection errors Visual quality Visual analytics

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