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Normal Forms of Modules over Admissible Algebras with Formal Two-ray Modules

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Acta Mathematica Sinica,English Series 2007年第6期23卷 1033-1052页

作者： Grzegorz BOBIski Faculty of Mathematics and Computer Science Nicolaus Copernicus UniversityChopina 12/1887-100 ToruPoland

The aim of the paper is to classify the indecomposable modules and describe the Auslander-Reiten sequences for the admissible algebras with formal two-ray modules.

关键词： domestic algebra vector space category Auslander-Reiten sequence

Exertional esophageal pH-metry and manometry in recurrent chest pain

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World Journal of Gastroenterology 2010年第34期16卷 4305-4312页

作者： Jacek Budzyński Department of Gastroenterology Vascular Diseases and Internal Medicine Nicolaus Copernicus University in Toruń Ludwik Rydygier Collegium Medicum in Bydgoszcz Poland Ujejskiego 75 Street 85-168 Bydgoszcz Poland Division of Vascular Diseases and Internal Medicine Dr Jan Biziel University Hospital No. 2 in Bydgoszcz Ujejskiego 75 Street 85-168 Bydgoszcz Poland

AIM: To investigate the diagnostic efficacy of 24-h and exertional esophageal pH-metry and manometry in patients with recurrent chest pain. METHODS: The study included 111 patients (54% male) with recurrent angina-like chest pain, non-respon- sive to therapy with proton pump inhibitors. Sixty-five (59%) had non-obstructive lesions in coronary artery angiography, and in 46 (41%) significant coronary artery narrowing was found. In all patients, 24-h esophageal pH-metry and manometry, and treadmill stress tests with simultaneous esophageal pH-metry and manometry monitoring were performed. During a 24-h examination the percentage of spontaneous chest pain (sCp) episodes associated with acid reflux or dysmotility (symptom index, SI) was calculated. patients with SI > 50% for acid gastroesophageal reflux (GER) were classified as having GER-related sCp. The remaining symptomatic individuals were determined as having non-GER-related sCp. During the stress test, the occurrence of chest pain, episodes of esophageal acidification (pH phageal spasm with more than 55% of simultaneous contractions (exercise-provoked esophageal spasm or EpES) were noted. RESULTS: Sixty-eight (61%) individuals reported sCp during 24-h esophageal function monitoring. Eleven of these (16%) were classified as having GER-related sCp and 53/68 (84%) as having non-GER-related sCp. The exercise-provoked chest pain during a stress test occurred in 13/111 (12%) subjects. In order to compare the clinical usefulness of 24-h esophageal function monitoring and its examination limited only to the treadmill stress test, the standard parameters of diagnostic test evaluation were determined. The occurrence of GER- related or non-GER-related sCp was assumed as a "gold standard". Afterwards, accuracy, sensitivity and specificity were calculated. These parameters expressed a prediction of GER-related or non-GER-related sCp occurrence by the presence of chest pain, esophageal acidification and EpES

关键词： Chest pain Diagnosis Esophageal manometry Esophageal pH-metry Treadmill test

Evolution Hemivariational Inequality with Hysteresis Operator in Higher Order Term

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Acta Mathematica Sinica,English Series 2008年第1期24卷 107-120页

作者： Leszek GASI■ski Jagiellonian University Institute of Computer Science

The authors study evolution hemivariational inequalities of semilinear type containing a hysteresis operator. For such problems we establish an existence result by reducing the order of the equation and then by the us... 详细信息

关键词： evolution hemivariational inequality Clarke subdifferential hysteresis operator timediscretization method

A potential engineering solution to facilitate upstream movement of fish in mountain rivers with weirs:Southern Carpathians,the Azuga River

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Journal of Mountain Science 2020年第3期17卷 501-515页

作者： Razvan VOICU Artur RADECKI-pAWLIK tomasz TYMINski Marian MOKWA Robbin SOTIR Liliana VOICU Ecohidrology and Water Quality protection Service National Institute of Hydrology and Water ManagementBucharest 013686Romania Division of Structural Mechanics and Material Mechanics Faculty of Civil EngineeringCracow University of TechnologyKrakow 31-155Poland Institute of Environmental Engineering Wroclaw University of Environmental and Life SciencesWroclaw 50-363Poland Robbin Sotir&Associates Inc.3602 Ernest W.Barrett Parkway MariettaGeorgia 30064-2732USA

An important aspect in the restoration of longitudinal connectivity in rivers and streams is the implementation of fish migration systems at the upstream of the functional hydraulic structures(weirs,drop structures or river sills).The diversity of these existing structures as well as the different locations of these weirs within the river,watershed and riparian zone challenge the design engineers to find new holistic solutions for fish migration *** Azuga River study area requires a new synergistic fish migration design *** a mountain area,rapid increase in water level is quite frequent,especially after heavy or prolonged rainfalls and during spring snow ***,it is necessary to design a specific system for fish migration to meet this location’s *** to the characteristics in this location of the Azuga river,the classic fish migration systems would not be *** indigenous/mountain trout is considered as the target species in this *** this is a good swimming species,the use of classical systems could,due to exhaustion,prevent and/or reduce the movement of fish upstream of the two weirs(also known as river sills).This new,comprehensive solution,presented in this paper includes:(i)the restoration and stabilization works of the right bank in the weir study area by using biotechnical measures and(ii)the upstream migration system itself-for supporting the migration of fish on the Azuga River.

关键词： Weir Fish migration system Brown trout Mountainriver Soilbioengineering Connectivity

Graph representation of n-dimensional space

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Advances in Manufacturing 2014年第1期2卷 54-60页

作者： tomasz Kosicki Department of production and Quality Engineering Norwegian University of Science and Technology

This paper investigates how graph representation can be created for the mesh which is a discrete approximation of n-dimensional continuous space. The paper discusses the relationship between mesh dimensionality and the type and quantity of edges connecting each vertex with its neighbors. Basing on the analysis, a simple algorithm is also proposed to create such graph representation. The purpose of the graph is to search optimal paths and trajectories in the represented space.

关键词： Trajectory optimization path optimization Graph search algorithms

Unlocking hypoglycemia–associated brain microvascular dysfunction:critical insights from proteomic analysis

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Neural Regeneration Research 2025年第6期20卷 1707-1708页

作者： Siva S.V.p.Sakamuri Anil Sakamuri Department of Chemistry Auburn University at MontgomeryMontgomeryALUSA Vascular Biology Center and Department of Medicine Medical College of Georgia at Augusta UniversityAugustaGAUSA

Hypoglycemia-a critical complication linked to worsened brain function in diabetic subjects:Hypoglycemia is characterized by a decline in circulatory glucose levels below sta nda rd physiological *** hypoglycemia,classified as level 1 hypoglycemia,is defined by blood glucose levels below 70 mg/dL and can be effectively addressed through carbohydrate *** hypoglycemia,denoted by blood glucose levels less than 54 mg/dL,poses a life-threatening risk if left *** with type 1 and type 2 diabetes undergoing insulin treatment are particularly susceptible to hypoglycemia due to impaired counterregulatory mechanisms.

关键词： impaired intake critical

Spectroscopic investigations of Gd_3Sc_2Ga_3O_(12) garnet doped with Cr^(3+) and Nd^(3+) ions

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Journal of Rare Earths 2009年第4期27卷 560-563页

作者： K.Lemański p.J.Dereń A.Gagor W.Strek Institute of Low Temperatures and Structure Research Polish Academy of Sciences

Absorption, excitation and emission spectra as well as decay time measurements at 10, 77, and 300 K were perfumed for Gd3Sc2Ga3O12 garnet single-crystal doped with Cr^3＋ and Nd^3＋ ions. Strong reabsorption of Cr3＋ emission by Nd3＋ absorption lines was ob- served. The assignments of f-f and d-d transitions were proposed. The broad emission band of chromium ions is an indication that weak/intermediate crystal field strength is present at the Cr3＋ site.

关键词： Gd3Sc2Ga3O12 crystal reabsorption Cr Nd rare earths

Scanning tunneling microscopy of buried dopants in silicon:images and their uncertainties

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npj Computational Materials 2022年第1期8卷 1727-1735页

作者： piotr T.Różański Garnett W.Bryant MichałZieliński Institute of physics Faculty of PhysicsAstronomy and InformaticsNicolaus Copernicus University in ToruńToruńPoland Nanoscale Device Characterization Division National Institute of Standards and TechnologyGaithersburgMD20899-8423USA

The ability to determine the locations of phosphorous dopants in silicon is crucial for the design,modelling,and analysis of atom-based nanoscale devices for future quantum computing ***,several papers showed that a metrology of scanning tunnelling microscopy(STM)imaging combined with atomistic tight-binding simulations could be used to determine coordinates of a dopant buried close to a Si *** identify effects which play a crucial role in the simulation of STM images and have to be precisely modelled for STM imaging of buried dopants and multi-dopant clusters to provide reliable position *** contrast to previous work,we demonstrate that a metrology combining STM imaging with tight-binding simulations may lead to pronounced uncertainty due to tip orbital model,effects of dangling bonds and choice of local atomic basis for the tight-binding *** work is still needed to obtain a reliable STM metrology of buried dopant position.

关键词： dopant buried metrology

Carbon Xerogel-supported Iron as a Catalyst in Combustion Synthesis of Carbon Fibrous Nanostructures

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Journal of Materials Science & Technology 2012年第4期28卷 294-302页

作者： Wojciech Kiciński Joanna Lasota Institute of Chemistry Military University of Technology Kaliskiego 2 00-908 Warsaw Poland

The catalytically assisted self-propagating high-temperature synthesis of carbon fibrous nanostructures, where the iron-doped colloidal carbon xerogel is proposed as a catalyst system, was examined. The carbon xerogel was prepared through carbonization of an iron doped organic xerogel at temperatures ranging from 600 to 1050℃. The reaction between calcium carbide and hexachloroethane in the presence of sodium azide is exothermic enough to proceed at a high temperature, self-sustaining regime. The combustion reactions of those mixtures enriched with iron-doped carbon xerogels were conducted in a stainless steel reactor---calorimetric bomb under an initial pressure of 1 Mpa of argon. Scanning electron microscopy analysis of the combustion products revealed low yield of various type of carbon fibers （presumably nanotubes）, which grew via the tip-growth mechanism. The fibrous nanostructures were found in the vicinity of the spot of ignition, while in the outer and cooler area of the reactor, dusty products with soot-like morphology dominated. No significant correlation between the pyrolysis temperature of the carbon xerogel and the morphology of the obtained carbon fibrous nanostructures was observed.

关键词： Combustion synthesis Carbon xerogel Carbon fibrous nanostructures Carbonnanotubes Scanning electron microscopy