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CONTROL THEORY AND TECHNOLOGY 2025年第1期23卷 1-27页

作者： Werner, ulrich TH Nurnberg Georg Simon Ohm Nuremberg Tech D-90489 Nurnberg Germany

A theoretical analysis regarding active vibration control of rotating machines with current-controlled electrodynamic actuators between machine feet and steel frame foundation and with velocity feedback of the machine feet vibrations is presented. First, a generalized mathematical formulation is derived based on a state-space description which can be used for different kinds of models (1D, 2D, and 3D models). It is shown that under special boundary conditions, the control parameters can be directly implemented into the stiffness and damping matrices of the system. Based on the generalized mathematical formulation, an example of a rotating machine-described by a 2D model-with journal bearings, flexible rotor, current-controlled electrodynamic actuators, steel frame foundation, and velocity feedback of the machine feet vibrations is presented where the effectiveness of the described active vibration control system is demonstrated.

关键词： Active vibration control Rotating machines Current-controlled electrodynamic actuators Steel frame foundation

The Vienna Cancer Stem Cell Club （VCSCC）： First 10 Years and Future Perspectives

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Journal of Life Sciences 2013年第6期7卷 577-585页

作者： Peter Valent Thomas Grunt Heidrun Karlic Harald Herrmann Brigitte Marian Axel Schulenburg Edgar Seizer Stefan Woehrer Hubert Pehamberger ulrich jager Christoph C. Zielinski Ludwig Boltzmann Cluster Oncology Medical University of Vienna Vienna 1090 Austria Department of Medicine I Division of Hematology & Hemostaseology Medical University of Vienna Vienna 1090 Austria Department of Medicine I Division of Clinical Oncology Medical University of Vienna Vienna 1090 Austria Department of lnternal Medicine III Division of Hematology/Oncology Hanusch Hospital Vienna 1140 Austria Department of Radiation Oncology Medical University of Vienna Vienna 1090 Austria Department of Medicine I Institute of Cancer Research Medical University of Vienna Vienna 1090 Austria Department of Medicine I Stem Cell Transplantation Unit Medical University of Vienna Vienna 1090 Austria Department of Dermatology Medical University of Vienna Vienna 1090 Austria

In 2002, the Vienna Cancer Stem Cell Club （VCSCC） was inaugurated by a group of scientists at the Medical University of Vienna, with the primary goal to initiate and promote cancer stem cell （CSC） research in Austria and to exploit knowledge from this new discipline in translational approaches, During the first years following inauguration, the VCSCC-community was small and left without major funding. However, over time the consortium was able to launch several major project-lines, supported in part by the National Science Funds, a Genome Program, and the Ludwig-Boltzmann Society. Today, the VCSCC provides a robust intellectual platform for ongoing research in the field of translational oncology and CSC-research in Austria. In addition, the VCSCC is connected to several major CSC-networks and centers in Europe and in North America, and is a well-recognized group in the field. The VCSCC also organized a series of CSC Meetings and Conferences, and contributed essentially to a recently published classification of CSC. There is also hope that the VCSCC-consortium will further advance the field of CSC research in the future, and will create novel concepts, with the ultimate aim to improve anti-cancer therapy through elimination, suppression, or long-term control of cancer-initiating cells.

关键词： Stem cells cancer stem cells molecular targets targeted drug therapies curative anti-cancer approaches.

Hymenopteran-specific TRPA channel from the Texas leaf cutter ant (Atta texana) is heat and cold activated and expression correlates with environmental temperature

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INSECT SCIENCE 2025年第1期32卷 301-320页

作者： York, Julia M. Taylor, Timothy N. LaPotin, Sarah Lu, Ying Mueller, ulrich Univ Illinois Dept Evolut Ecol & Behav Urbana IL USA Univ Texas Austin Dept Integrat Biol Austin TX USA Univ Texas Austin Inst Neurosci Austin TX USA Univ Utah Dept Human Genet Salt Lake City UT USA Univ Illinois Dept Evolut Ecol & Behav Urbana IL 61801 USA

Leaf cutting ants of the genus Atta cultivate fungal gardens, carefully modifying environmental conditions to maintain optimal temperature for fungal growth. Antennal nerves from Atta are highly temperature sensitive, but the underlying molecular sensor is unknown. Here, we utilize Atta texana (Texas leaf cutter ant) to investigate the molecular basis of ant temperature sensation and how it might have evolved as the range expanded northeast across Texas from ancestral populations in Mexico. We focus on transient receptor potential (TRP) channel genes, the best characterized temperature sensor proteins in animals. Atta texana antennae express 6 of 13 Hymenopteran TRP channel genes and sequences are under a mix of relaxed and intensified selection. In a behavioral assay, we find A. texana workers prefer 24 C-degrees (range 21-26 C-degrees) for fungal growth. There was no evidence of regulatory evolution across a temperature transect in Texas, but instead Hymenoptera-specific TRPA (HsTRPA) expression highly correlated with ambient temperature. When expressed in vitro, HsTRPA from A. texana is temperature activated with Q10 values exceeding 100 on initial exposure to temperatures above 33 C-degrees. Surprisingly, HsTRPA also appears to be activated by cooling, and therefore to our knowledge, the first non-TRPA1 ortholog to be described with dual heat/cold activation and the first in any invertebrate.

关键词： electrophysiology evolution invertebrate leaf cutter ants temperature TRP channels

Fever without source in infants aged 22–60 days:how laboratory tests perform at identifying bacterial infections and predicting the need for a lumbar puncture?

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World Journal of Emergency Medicine 2025年第1期16卷 74-77页

作者： Keven Vachon Geneviève Gravel Samuel Leduc Alexandra Larouche Myriam Mallet David Simonyan Mahukpe Narcisse ulrich Singbo Julie Ouellet-Pelletier Simon Berthelot Centre de Recherche du CHU de Québec-UniversitéLaval Population Health and Optimal Health Practices AxisQuébec G1V 4G2Canada Faculty of Medicine UniversitéLavalQuébec G1V 0A6Canada Centre Hospitalier de l’UniversitéLaval(CHUL) Québec G1V 4G2Canada

Febrile infants are at greater risk of invasive bacterial infections (IBI),which include bacterial meningitis and *** bacterial meningitis is uncommon,^([1-2])it remains a concern for clinicians treating infants younger than 90 *** for investigating fever without a source(meaning without an apparent source of infection,or of nonobvious origin) are numerous around the world but remain conflicting,particularly on whether to perform a lumbar puncture for cerebrospinal fluid (CSF) analysis in infants older than 22 d and hence at lower risk than younger infants.

关键词： puncture infections lumbar

Valorization of Ubiquitous Plant Species Used as Food Packaging in Benin: A Sustainable Solution to Improve Quality of Life and Protect the Environment

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American Journal of Plant Sciences 2025年第1期16卷 51-63页

作者： Joli Prince Mintognissè Fossou Yann Christie Sissinto Adjovi ulrich Hilarion Ahéhéhinnou Frida Tovo Sèna Emmanuelle Dédéhou Laboratory of Biochemistry and Molecular Biology of Centre Bninois de la Recherche Scientifique et de lInnovation Cotonou Benin National Agricultural University Ketou Benin Ecole des Sciences et Techniques de Conservation et de Transformation des Produits Agricoles Universit Nationale dAgriculture (ESTCTPA/UNA) Porto-Novo Benin

Vegetal leaves play a significant role in the daily lives of populations in developing countries. This study aimed to highlight the plant species used as food packaging in southern Benin. A survey questionnaire was administered in local markets, and informed consent was obtained from native guides. Data were processed using Google Forms, and a phytochemical screening was conducted on the sampled species. A total of 311 individuals, including elders, vendors, and consumers, participated in the survey. The most commonly used plant species identified were Tectona grandis, Thalia geniculata, Musa sapientum, Gmelina arborea, Manihot esculenta, and Terminalia catappa. Several reasons, primarily cultural, explain the preference for these species. Notably, Tectona grandis and Musa sapientum demonstrated superior morphological, physical, and organoleptic qualities, measuring 79 cm by 53.5 cm and over 2 m by 50 cm, respectively. They accounted for 33.33% and 32.35% of usage. Additionally, fermented corn paste, making up over 53% of offerings, was the most popular food item. The mechanical properties of these leaves, such as flexibility, toughness, and relative impermeability, along with identified phytochemicals like terpenes, alkaloids, gallic acid, flavonoids, and coumarins, enhance food preservation and limit microbial activity. Promoting the use of these natural packaging materials over plastic alternatives could significantly reduce environmental pollution and mitigate the risks associated with toxic microorganisms in food, contributing to both ecological health and food safety.

关键词： Socio-Ethnobotanical Surveys Food Items Secondary Metabolites Bioactive Natural Substances Phytochemical Screening

An investigation of the effects of hydrochar application rate on soil amelioration and plant growth in three diverse soils

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Biochar 2021年第3期3卷 349-365页

作者： Megan de jager Luise Giani Carl Von Ossietzky Universität Institut Für Biologie Und UmweltwissenschaftenOldenburgGermany

The hydrothermal carbonization(HTC)of biogas digestate alters the raw materials inherent characteristics to produce a carbon(C)-rich hydrochar(HC),with an improved suitability for soil *** studies report conflicting impacts of various HC application rates on soil properties and plant *** this study,the influence of HC application rate on soil improvement and plant growth aspects was investigated in three diverse soils(Chernozem,Podzol,and Gleysol).Pot trials were conducted in which all soils were amended with 5,10,20 and 30%(w/w)HC in quintuplicate,with two controls of pure soil(with and without plants,respectively)also *** to potting,soil samples were collected from all HC-amended soils and controls and analyzed for soil pH,plant available nutrients(PO4-P and K),and microbial activity using standard laboratory and statistical *** after potting,a 6-week seed germination experiment using Chinese cabbage was conducted to determine germination success,followed by a plant growth experiment of equal duration and plant species to determine biomass *** the end of the study(after a total plant growth period of 12 weeks),each pot was sampled and comparatively analyzed for the same soil properties as at the beginning of the *** pH shifted toward the pH of the HC(6.6)in all soils over the course of the study,but was most expressed in the 20%and 30%application rates,confirming the well-documented liming effect of *** addition of HC increased the PO4-P and K contents,particularly with 20%and 30%HC *** results are proposedly due to the large labile C fraction of the HC,which is easily degradable by *** rapid decomposition of this C fraction prompted the quick release of the HCs inherently high PO4-P and K content into the soil,and in turn,further stimulated microbial activity,until this fraction was essentially *** addition did not inhibit seed germination at any rate,presumabl

关键词： Biogas digestate Hydrochar application rate Soil improvement Nutrient availability Microbial activity

The influence of hydrochar from biogas digestate on soil improvement and plant growth aspects

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Biochar 2020年第2期2卷 177-194页

作者： Megan de jager Michael Rohrdanz Luise Giani Carl Von Ossietzky Universitat Institut für Biologie und UmweltwissenschaftenOldenburgGermany

Hydrochar(HC),produced by hydrothermal carbonization,offers technical advantages over biochar(BC)produced by pyrolysis,and is suitable for soil amelioration,carbon sequestration,and enhanced plant *** grain size has been shown to influence nutrient retention,microbial colonization and aggregate formation;however,similar research for HC is *** trials were conducted to investigate the influence of HC grain size[coarse(6.3-2 mm),medium(2-0.63 mm)and fine(50%in all *** effect on NO_(3)^(−)content was indeterminable,while there was little to no effect on biom

关键词： Hydrochar Soil improvement Grain size Plant available nutrients

On the Strong Limit Theorems for Double Arrays of Blockwise M-dependent Random Variables

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Acta Mathematica Sinica,English Series 2011年第10期27卷 1923-1934页

作者： ulrich STADTMULLER Department of Number and Probability Theory Ulm University 89069 Ulm Germany

For a double array of blockwise M-dependent random variables {Xmn,m ≥ 1,n ≥ 1}, ∑i^m=1 ∑^nj=1 strong laws of large numbers are established for double sums ∑m i=1 ∑j^n=1 ij, m≥ 1, n 〉 1. The main results are obtained for （i） random variables {Xmn, m≥ 1, n ≥ 1} being non-identically distributed but satisfy a condition on the summability condition for the moments and （ii） random variables {Xmn, m ≥ 1, n ≥ 1} being stochastically dominated. The result in Case （i） generalizes the main result of M6ricz et al. [J. Theoret. Probab., 21, 660-671 （2008）] from dyadic to arbitrary blocks, whereas the result in Case （ii） extends a result of Gut [Ann. Probab., 6, 469-482 （1978）] to the bockwise M-dependent setting. The sharpness of the results is illustrated by some examples.

关键词： Blockwise M-dependent random variables strong law of large numbers double arrays of random variables almost sure convergence

Novel fabrication of soft microactuators with morphological computing using soft lithography

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Microsystems & Nanoengineering 2019年第1期5卷 217-226页

作者： Manav Tyagi Jingle Pan Edwin W.H.jager Sensor and Actuator Systems Department of PhysicsChemistryand Biology(IFM)Linköping UniversityLinköping 58183Sweden

A simple and cost-effective method for the patterning and fabrication of soft polymer microactuators integrated with morphological computation is *** microactuators combine conducting polymers to provide the actuation,with spatially designed structures for a morphologically controlled,user-defined *** lithography is employed to pattern and fabricate polydimethylsiloxane layers with geometrical pattern,for use as a construction element in the *** microactuators could obtain multiple bending motions from a single fabrication process depending on the morphological pattern defined in the final *** of fabricating via conventional photolithography route,which involves multiple steps with different chromium photomasks,this new method uses only one single design template to produce geometrically patterned layers,which are then specifically cut to obtain multiple device *** desired design of the actuator is decided in the final step of *** resulting microactuators generate motions such as a spiral,screw,and tube,using a single design template.

关键词： lithography template pattern

Multidimensional separation due to selective spherical agglomeration—Evidence of shape separation via X-ray microtomography

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Particuology 2021年第5期19卷 316-323页

作者： Julia Schreier ulrich Brockel University of Applied Sciences Trier Institute for Micro-Process-Engineering and Particle Technology(IMiP)Umwelt-Campus BirkenfeldP.O.Box 1380D-55761 BirkenfeldGermany

Objective of this work was to develop a novel method for characterizing real 3D shapes of particles smaller than 20μm by X-ray microtomography(X-RMT).Multidimensional separation of heterogenous solids through agglomeration in suspension will improve recycling processes as the particle shape and the agglomerate size are used for shape-selective *** the present paper we discuss the fundamentals of X-ray tomography and the experimental setup for selective spherical agglomeration in suspension.A specific preparation method of the particulate sample for X-RMT followed by 3D image processing,are essential for the shape analysis expressed as *** also discuss the limitation of this method due to the so-called Partial Volume Effect and particle clusters in the order of magnitude of X-RMT *** proof of concept,we used a mixture of graphite platelets and spheronized graphite particles for a shape selective-agglomeration in *** remaining fines were analyzed and showed more platelets than in the *** indicates that spheronized particles are preferably bound in the *** findings show that,based on the discussed sample preparation and a 3D image analysis in connection with X-RMT,particle shapes of micronized particles can be discriminated.

关键词： Multidimensional separation X-ray microtomography Selective agglomeration Particle shape Graphite