Wyniki wyszukiwania - Biblioteka Nauki

1

An anomalous case report of canine impaction resultant of supernumerary fusion to mandibular incisor

100%

Marushko O. , Kraiz A. , Marushko O. , Błochowiak K.

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nr 2

442-447

EN

Introduction and aim. Anomalies in dental characteristics such as size, shape, number, structure, and eruption are commonly observed in clinical conditions. One such anomaly is the presence of supernumerary teeth found in various regions of the dental arch. Although frequently asymptomatic, supernumerary teeth are routinely identified during radiographic evaluations. Among the most common causes of impacted maxillary incisors is the presence of supernumerary teeth. Description of the case. Herein, we present a rare case of lower left canine impaction subsequent to a supernumerary fusion to the mandibular left incisor in a 10-year-old Caucasian female. Conclusion. This case contributes to the current knowledge regarding supernumerary fused teeth, emphasizing the importance of early intervention and multidisciplinary collaboration in effectively managing such developmental dental irregularities.

2

Hazy Underwater Image Enhancement Based on Contrast and Color Improvement Using Fusion Technique

100%

Singh R. , Biswas M.

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2017

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tom Vol. 22, no. 3

31--38

EN

Scattering and absorption of light in water leads to degradation of images captured under the water. This degradation includes diminished colors, low brightness and undistinguishable objects in the image. To improve the quality of such degraded images, we have proposed fusion based underwater image enhancement technique that focuses on improving of the contrast and color of underwater images using contrast stretching and Auto White Balance. Our proposed method is very simple and straightforward that contributes greatly in uplifting the visibility of underwater images.

3

Possibility of Stars Energy Mechanism on the Earth

100%

Davood Sadatian S.

International Letters of Chemistry, Physics and Astronomy

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2015

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tom Vol. 45

42--49

EN

Since long time ago, human’s ambition has been obtaining an energy source which can be used for a long time, additionally it does not produce dangerous wastes. Todays in third millennium AD, it gradually seems to realize this unattainable ambition. Now human is getting ready for realizing his ancestors’ dreams by making the first star stracture of energy. A pure and cheap fuel, named Hydrogen and rich production energy and a pure waste, named Helium. However, in this essay we explain some possibility of fusion method from stars on the earth.

4

Non-linear multimodal object tracking based on 2d lidar data

100%

Thuy M. , Puente León F.

Metrology and Measurement Systems

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2009

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tom Vol. 16, nr 3

359-369

EN

The contribution introduces a novel approach for tracking objects based on two-dimensional lidar data. As a central tracking engine, we employ a particle-filter-based solution which is capable of modelling non-linear dynamic processes as well as non-Gaussian noise distributions for the underlying process and sensor as well. In contrast to other lidar-based tracking approaches, no newly detected objects have to be associated to already known objects in an explicit manner. Since our weighting function is multi-modal, the association is done by the filter itself.

5

Application of 1H and 31P NMR to topological description of a model of biological membrane fusion Topological description of a model of biological membrane fusion

88%

Janiak-Osajca A. , Timoszyk A.

Acta Biochimica Polonica

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2012

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tom 59

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nr 2

219-224

EN

The process of biological membrane fusion can be analysed by topological methods. Mathematical analysis of the fusion process of vesicles indicated two significant facts: the formation of an inner, transient structure (hexagonal phase - HII) and a translocation of some lipids within the membrane. This shift had a vector character and only occurred from the outer to the inner layer. Model membrane composed of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylserine (PS) was studied. 31P- and 1H-NMR methods were used to describe the process of fusion. 31P-NMR spectra of multilamellar vesicles (MLV) were taken at various temperatures and concentrations of Ca2+ ions (natural fusiogenic agent). A 31P-NMR spectrum with the characteristic shape of the HII phase was obtained for the molar Ca2+/PS ratio of 2.0. During the study, 1H-NMR and 31P-NMR spectra for small unilamellar vesicle (SUV), which were dependent on time (concentration of Pr3+ ions was constant), were also recorded. The presence of the paramagnetic Pr3+ ions permits observation of separate signals from the hydrophilic part of the inner and outer lipid bilayers. The obtained results suggest that in the process of fusion translocation of phospholipid molecules takes place from the outer to the inner layer of the vesicle and size of the vesicles increase. The NMR study has showed that the intermediate state of the fusion process caused by Ca2+ ions is the HII phase. The experimental results obtained are in agreement with the topological model as well.

6

MutS as a tool for mutation detection

88%

Stanisławska-Sachadyn A. , Sachadyn P.

Acta Biochimica Polonica

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2005

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tom 52

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nr 3

575-583

EN

MutS, a DNA mismatch-binding protein, seems to be a promising tool for mutation detection. We present three MutS based approaches to the detection of point mutations: DNA retardation, protection of mismatched DNA against exonuclease digestion, and chimeric MutS proteins. DNA retardation in polyacrylamide gels stained with SYBR-Gold allows mutation detection using 1-3 µg of Thermus thermophilus his6-MutS protein and 50-200 ng of a PCR product. The method enables the search for a broad range of mutations: from single up to several nucleotide, as mutations over three nucleotides could be detected in electrophoresis without MutS, due to the mobility shift caused by large insertion/deletion loops in heteroduplex DNA. The binding of DNA mismatches by MutS protects the complexed DNA against exonuclease digestion. The direct addition of the fluorescent dye, SYBR-Gold, allows mutation detection in a single-tube assay. The limited efficiency of T4 DNA polymerase as an exonuclease hampers the application of the method in practice. The assay required 300-400 ng of PCR products in the range of 200-700 bp and 1-3 µg of MutS. MutS binding to mismatched DNA immobilised on a solid phase can be observed thanks to the activity of a reporter domain linked to MutS. We obtained chimeric bifunctional proteins consisting of T. thermophilus MutS and reporter domains, like β-galactosidase or GFP. Very low detection limits for β-galactosidase could theoretically enable mutation detection not only by the examination of PCR products, but even of genomic DNA.

7

Русское словосложение: исторический аспект

88%

Николаев Г. , Николаева Н.

Studia Rossica Posnaniensia

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2018

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nr 43

237-244

PL

Compound words are known in the Russian language since the first written texts of different genre and stylistic characteristics. The formation of composites was carried out in two productive ways: by the non-morphological semantic method of fusion and by morphological addition. Within both methods (in literary texts) the calques of Greek composites and the development of East Slavic word formations in their sample are also noted. Both methods were interrelated, and an interaction of derivatives occurred in their sphere.

8

Evaluation of some parameters of hard surfacing treatment of the functional surfaces of forestry tools

88%

Ťavodová M. , Kalincová D. , Slováková I.

Management Systems in Production Engineering

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2018

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tom nr 4 (26)

222--226

EN

In this paper we discuss the possibility of increasing service life of tools used in forestry for mulching of undesirable forest growths. In a heterogeneous working environment in which they are operated, such tools are subjected to constant abrasion and impact loading. There are several ways how to extend their service life and operational fitness. One of these is hard surface treatment, or hard surfacing of their functional surfaces. In our experiment, we chose suitable hard surfacing materials and applied these on the sample materials using the MMA and MAG welding. The hard surface was applied in an one layer. Subsequently, we performed hardness tests, microscopic analysis of the structure of the basic material and the hard surface and evaluation of the fusion penetration of the base material with the hard surfacing weld. Fusion is crucial as it determines the cohesiveness of the weld and base materials and thus also the actual extension of the service life of the tools.

9

The role of Rab proteins in vesicle transport and fusion

88%

Surmacz L. , Wyroba E.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr Suppl.

10

Fusion of spherical bilayer vesicle to confined membrane lipid segment

88%

Iglic A. , Svetina S. , Zeks B.

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1994

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tom 12

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nr 2

11

Heat load and deuterium plasma effects on SPS and WSP tungsten

75%

Vilémová M. , Matějíček J. , Nevrlá B. , Chernyshova M. , Gasior P. , Kowalska-Strzeciwilk E. , Jäger A.

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nr 2

275-283

EN

Tungsten is a prime choice for armor material in future nuclear fusion devices. For the realization of fusion, it is necessary to address issues related to the plasma–armor interactions. In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/helium bubbles. The samples were subjected to a laser heat loading and a radiation loading of deuterium plasma to simulate edge plasma conditions of a nuclear fusion device (power density of 108 W/cm2 and 107 W/cm2, respectively, in the pulse intervals up to 200 ns). Thermally induced changes in the morphology and the damage to the studied surfaces are described. Possible consequences for the fusion device operation are pointed out.

12

Połączenie kopalń "Sośnica" i "Makoszowy" w dwuruchowy zakład górniczy

75%

Kentnowski E. , Wizner L.

Wiadomości Górnicze

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2006

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tom Vol. 57, nr 3

171-175

PL

W artykule przedstawiono schemat z zaznaczonym obszarem górniczym zintegrowanej kopalni, położonej w zachodniej części Górnośląskiego Zagłębia Węglowego na terenach miast Gliwice, Zabrze, Ruda Śląska, Mikołów i gminy Gierałtowice. Przedstawiono genezę projektu połączenia obu kopalń w aspekcie strategii Kompanii Węglowej SA na lata 2004-2010. Formalna decyzja o połączeniu kopalń podjęta została przez Zarząd Kompanii Węglowej SA w dniu 29 czerwca 2005 r. Przyjęto nazwę Kompania Węglowa SA, Kopalnia Węgla Kamiennego "Sośnica-Makoszowy" z siedzibą w Zabrzu.

EN

The article presents a diagram with denoted mining area of the integrated mine, located in the western part of the Upper Silesian Coalfield on the territories of cities as Gliwice, Zabrze, Ruda Śląska, Mikołów, Gieraltowice community. lt presents the background of the project to merge the two mines with regard to a strategy of Kompania Węglowa SA for 2004-2010. The formal decision on merger of the two mines was taken by the Managerial Board of Kompania Węglowa SA on 29 June 2005. The new critity assumed the name of Kompania Węglowa SA, "Sośnica-Makoszowy" mine with residence in Zabrze.

13

Data mining methods for gene selection on the basis of gene expression arrays

75%

Muszyński M. , Osowski S.

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tom 24

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nr 3

657-668

EN

The paper presents data mining methods applied to gene selection for recognition of a particular type of prostate cancer on the basis of gene expression arrays. Several chosen methods of gene selection, including the Fisher method, correlation of gene with a class, application of the support vector machine and statistical hypotheses, are compared on the basis of clustering measures. The results of applying these individual selection methods are combined together to identify the most often selected genes forming the required pattern, best associated with the cancerous cases. This resulting pattern of selected gene lists is treated as the input data to the classifier, performing the task of the final recognition of the patterns. The numerical results of the recognition of prostate cancer from normal (reference) cases using the selected genes and the support vector machine confirm the good performance of the proposed gene selection approach.

14

Dena, a new PF device

75%

Tafreshi M. A. , Farrahi M. , Lamehi M. , Goudarzi S. , Habibi H. , Memarzadeh M. , Siahpoush V. , Saeedzadeh E. , Vinogradov V. P. , Krauz V. I. , Krivtsov V. A. , Karakin M. A. , Myalton V. V. , Tykshaev V. P.

Nukleonika

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2001

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tom Vol. 46, suppl. 1

85--87

EN

In this paper we are going to introduce “Dena”, a new Filippov type plasma focus facility, with a condenser bank of 0.288 mF, and a maximum supplying energy of 90 kJ (at Vmax= 25 kV). The facility was installed and started to work in the first quarter of the year 2000. Major points of the paper are: – Dena’s construction, functionality, and diagnostic system. – Preliminary results: Different modes of neutron, X-ray, and “hot spot” production, as well as the possibility of controlling operational mode, by changing anode configuration and initial discharge condition.

15

Koncepcja elektrowni termojądrowej

75%

Bradło D. , Żelazny S. , Żukowski W.

Czasopismo Techniczne. Środowisko

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2012

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tom R. 109, z. 1-Ś

31--40

PL

Kontrolowana synteza termojądrowa odnosi się do takiej reakcji syntezy jąder atomowych, która zachodzi w temperaturach rzędu milionów K, a energia uzyskana z fuzji wystarcza do podtrzymania dalszej reakcji i można ją wykorzystać do celów energetycznych. W niniejszym artykule zaprezentowano koncepcję przyszłej elektrowni termojądrowej DEMO opartej na modelu AB PPCS. Zamieszczono symulację działania systemu zamiany energii cieplnej w elektryczną wykonaną w programie CHEMCAD 6.2. Dokonano także porównania różnych typów elektrowni poprzez obliczenie ilości potrzebnego paliwa dla elektrowni o mocy 1500 MW w ciągu roku.

EN

The controlled nuclear fusion refers to reaction of synthesis of atomic nuclei, which proceed in temperature of millions K and energy released in the process could support further reactions and also might be used as a source of electric energy. The paper comprises concept of future thermonuclear power plant DEMO based on model AB PPCS. The system of power conversion of thermal energy into electric energy was accomplished and simulated in program CHEMCAD 6.2. A comparison of different type of power plant was made by calculation of amount of fuel needed for 1500 MW plant, during one year.

16

D(3He,p)4He and D(d,p)3H fusion in a small plasma focus operated in a deuterium helium-3 gas mixture

75%

Springham S. , Sim T. , Rawat T. , Lee P. , Patran A. , Shutler P. , Tan T. , Lee S.

Nukleonika

|

2006

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tom Vol. 51, nr 1

47-53

EN

Abstract A 3 kJ plasma focus was operated with a 3He-D2 gas mixture, with partial pressures in the ratio of 2:1, corresponding to an atomic number ratio of 1:1 for 3He and D atoms. The fusion reactions D(3He,p)4He and D(d,p)3H were measured simultaneously using CR-39 polymer nuclear track detectors placed inside a pinhole camera positioned on the forward plasma focus axis. A sandwich arrangement of two 1000 mi m thick CR-39 detectors enabled the simultaneous registration of two groups of protons with approximate energies of 16 MeV and 3 MeV arising from the D(3He,p)4He and D(d,p)3H reactions, respectively. Radial track density distributions were obtained from each CR-39 detector and per-shot average distributions were calculated for the two groups of protons. It is found that the D(3He,p)4He and D(d,p)3H proton yields are of similar magnitude. Comparing the experimental distributions with results from a Monte Carlo simulation, it was deduced that the D(3He,p)4He fusion is concentrated close to the plasma focus pinch column, while the D(d,p)3H fusion occurs relatively far from the pinch. The relative absence of D(d,p)3H fusion in the pinch is one significant reason for concluding that the D(3He,p)4He fusion occurring in the plasma focus pinch is not thermonuclear in origin. It is argued that the bulk of the D(3He,p)4He fusion is due to energetic 3He2+ ions incident on a deuterium target. Possible explanations for differing spatial distributions of D(3He,p)4He and D(d,p)3H fusion in the plasma focus are discussed.

17

Heat load and deuterium plasma effects on SPS and WSP tungsten

75%

Vilémová M. , Matějíček J. , Nevrlá B. , Chernyshova M. , Gasior P. , Kowalska-Strzeciwilk E. , Jäger A.

Nukleonika

|

2015

|

tom Vol. 60, No. 2

275--283

EN

Tungsten is a prime choice for armor material in future nuclear fusion devices. For the realization of fusion, it is necessary to address issues related to the plasma–armor interactions. In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/ helium bubbles. The samples were subjected to a laser heat loading and a radiation loading of deuterium plasma to simulate edge plasma conditions of a nuclear fusion device (power density of 108 W/cm2 and 107 W/cm2, respectively, in the pulse intervals up to 200 ns). Thermally induced changes in the morphology and the damage to the studied surfaces are described. Possible consequences for the fusion device operation are pointed out.

18

The role of tyrosine kinase in the adhesion and fusion of myoblasts

75%

Wrobel E. , Moraczewski J.

Cellular and Molecular Biology Letters

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2002

|

tom 07

|

nr Suppl.

19

Takeovers and fusions in Poland compared to the world tendencies

75%

Kraciuk J.

Electronic Journal of Polish Agricultural Universities. Series Economics

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2005

|

tom 08

|

nr 2

EN

Major results of economic globalisation are concentration processes, which take place in the world economy. In the paper there were shown such main forms of concentration as fusions and takeovers. Their types and consequences (often negative ones) for joining transnational corporations were also presented. The second part of the article shows development of these forms of concentration in the world and in Poland, their quantity and value as well as the largest transactions of fusions and takeovers, which happened last years. Analysis confirms the fact that though the most of transactions finish as failures, there still has been large interest of corporations to be joined. Moreover, after down tendency last years, new rising tendency of these forms of concentrations is beginning.

20

Surowce magnezjowe z alternatywnych źródeł

63%

Skalska M. , Darłak M. , Śnieżek E. , Madej D. , Turek M. , Szczerba J.

Materiały Ceramiczne

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2016

|

tom T. 68, nr 4

346--354

PL

W pracy przedstawiono wyniki prac badawczo-rozwojowych nad otrzymywaniem surowców magnezjowych z zasolonych wód wykonanych w ramach realizacji przez Zakłady Magnezytowe ,,ROPCZYCE” S.A. przy współudziale Wydziału Inżynierii Materiałowej i Ceramiki AGH w Krakowie projektu POIG Działanie 1.4 „Zastosowanie kruszyw otrzymanych z krajowych surowców alternatywnych w materiałach ogniotrwałych”. W eksperymentalnej linii wytrącano z zasolonych wód wodorotlenek magnezu, który poddano kalcynacji w specjalnie przygotowanych kasetonach w piecu tunelowym Zakładów Magnezytowych ,,ROPCZYCE” S.A. Tak otrzymana magnezja kalcynowana poddawana była topieniu w łukowym piecu elektrycznym innowacyjnej linii topienia utworzonej w ramach realizowanego projektu i posłużyła do wytworzenia kruszywa magnezjowego. Na każdym etapie technologicznym wykonywano oznaczenia strat prażenia i składu chemicznego produktów magnezjowych. Wyselekcjonowane frakcje kruszywa magnezjowego poddano badaniom składu fazowego, chemicznego w mikroobszarach i obserwacjom mikroskopowym. Otrzymane kruszywo magnezjowe, pozyskane z wodorotlenku magnezu wytrąconego z zasolonych wód miało właściwości wymagane w przypadku tego typu surowców stosowanych w produkcji zasadowych materiałów ogniotrwałych

EN

The results of R&D works are presented, concerning the obtainment of magnesia raw materials derived from saline water. The works were done in frames of realization of a POIG project: Action 1.4 "The application of aggregates obtained from domestic alternative resources in refractory materials" by Zakłady Magnezytowe ,,ROPCZYCE” S.A. in cooperation with the Faculty of Materials Science and Ceramics at the AGH-UST in Kraków. Magnesium hydroxide was precipitated by using an experimental line and calcined in a tunnel furnace of Zakłady Magnezytowe ,,ROPCZYCE” S.A., using specially prepared coffers. The obtained caustic magnesia was fused in an electrical arc furnace of an innovative line for fusion developed during the realization of the project and it was used for the manufacturing of magnesia aggregate. The determination of calcination losses and chemical composition of magnesia products has been done in each technological stage. Selected fractions of the magnesia aggregate were characterized with respect to their phase composition, chemical composition in microareas, and microstructure. The magnesia aggregate derived from the saline water fulfilled requirements expected by aggregates that are used for production of basic refractory materials.