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Wyświetlanie 1-15 z 23
Tytuł:
Proteus mirabilis RMS 203 as a new representative of the O13 Proteus serogroup
Autorzy:
Palusiak, Agata
Siwińska, Małgorzata
Zabłotni, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1038887.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
cross-reaction
lipopolysaccharide
O-polysaccharide
O serogroup
Proteus
Opis:
The unique feature of some Proteus O-polysaccharides is occurrence of an amide of galacturonic acid with Nε-[(S/R)-1-Carboxyethyl]-l-lysine, GalA6(2S,8S/R-AlaLys). The results of the serological studies presented here, with reference to known O-antigens structures suggest that GalA6(2S,8S/R-AlaLys) or 2S,8R-AlaLys contribute to cross-reactions of O13 Proteus antisera, and Proteeae LPSs. It was also revealed that the Proteus mirabilis RMS 203 strain can be classified into the O13 serogroup, represented so far by two strains: Proteus mirabilis 26/57 and Proteus vulgaris 8344. The O13 LPS is a serologically important antigen with a fragment common to LPSs of different species in the Proteeae tribe.
Źródło:
Acta Biochimica Polonica; 2015, 62, 4; 691-695
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Suzuki-Miyaura cross-coupling reaction catalyzed by new synthesized palladium complex containing N,N,O-Tridentate ligands
Autorzy:
Jadeja, Juvansinh J.
Gondaliya, Mitesh B.
Mokariya, Devang M.
Shah, Manish
Powiązania:
https://bibliotekanauki.pl/articles/1182763.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
N
O-Tridentate ligand
Palladium complex
Schiff base
Suzuki-Miyaura cross-coupling reaction
Opis:
N,N,O-Tridentate ligands were prepared by the condensation of 1-(Benzothiazole 2-yl) hydrazine with substituted salicyldehydes or different aromatic ketones. New synthesized metal complex are thermally stable and neither air- nor moisture-sensitive. Suzuki–Miyaura cross-coupling reaction is carried out in present of various ligands and palladium salts, Different solvent/water ratio with different Base and studied effects its effect on the performance of the coupling reaction.
Źródło:
World Scientific News; 2017, 66; 238-249
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reakcje krzyzowe alergenow
Autorzy:
Wroblewska, B
Powiązania:
https://bibliotekanauki.pl/articles/825965.pdf
Data publikacji:
1999
Wydawca:
Polskie Towarzystwo Technologów Żywności
Tematy:
bialko
choroby czlowieka
reakcje krzyzowe
alergeny pokarmowe
leczenie
profiliny
alergeny wziewne
alergie pokarmowe
protein
human disease
cross reaction
food allergen
treatment
profilin
airborne allergen
food allergy
Opis:
W pracy zwrócono uwagę na problem występowania reakcji krzyżowych pomiędzy alergenami pochodzącymi z różnych źródeł, zarówno pokarmowych jak i wziewnych.. Dużą rolę przypisuje się obecnie profilinom, wszechobecnym białkom występującym we wszystkich komórkach eukariotycznych. Zostały one uznane za tzw. alergen ogólny, o szerokim spektrum działania. Prawidłowa ocena reakcji krzyżowych jest niezbędna do zastosowania właściwego sposobu leczenia pacjentów cierpiących na alergie.
Crossreactions between the inhalative and food allergens were described in the present work. Profilin is ubiquitous protein which is present in all eukaryotic cells. It is so widespread that is considered as panallergen. Proper estimation of allergic crossreactions is nessesery to select appropriate treatment of patients suffering from allergy.
Źródło:
Żywność Nauka Technologia Jakość; 1999, 06, 2; 5-14
1425-6959
Pojawia się w:
Żywność Nauka Technologia Jakość
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-Empirical Formula with New Coefficients of the (α,n) Reaction Cross-Section
Autorzy:
Akça, S.
Tel, E.
Güngör, S.
Powiązania:
https://bibliotekanauki.pl/articles/1401939.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.40.-h
25.60.Dz
Opis:
A new modified semi-empirical formula including non-elastic scattering and Coulomb effects for the (α,n) reaction cross-section was obtained. The available experimental data were used to get the (α,n) reaction cross-section systematics. The dependence between the cross-section and asymmetry term was discussed for (α,n) reaction at 18.5±3 MeV energies classifying the target nuclei into odd Z-even N and even Z-even N. The coefficients of determination (R²) for all classifications were detected to exhibit the amount of relation between asymmetry term and cross-sections obtained from the modified semi-empirical formula with new coefficients.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-128-B-131
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Production Reaction Cross Section for $\text{}^{137}Cs$ Used in Radiotherapy
Autorzy:
Karpuz, N.
Boz, M.
Mavi, B.
Oner, F.
Akkurt, İ.
Powiązania:
https://bibliotekanauki.pl/articles/1402395.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.20.Pm
52.59.-f
Opis:
During the production of the radiation source that used in radiotherapy may occur nuclear reactions are very important in terms of human health. $\text{}^{137}Cs$ is used in radiotherapy that consists of fission the $\text{}^{235}U$ core. Because of physical half-live of $\text{}^{137}Cs$ is 30 years, it is advantage for the radioactive half-lives. In this study, radionuclide production reaction cross section for $\text{}^{235}U$ $(n,f)^{137}Cs$ is calculated with TALYS 1.6 nuclear simulation code that based on Monte Carlo.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-363-B-364
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Inverse Reaction Cross Sections for Some Charged Particles Using the Optical Model Parameters
Autorzy:
Ahmed, Rasha S.
Powiązania:
https://bibliotekanauki.pl/articles/1193016.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Optical reaction cross-sections
charged particles
neutrons
pre-equilibrium models
Opis:
p-nucleus, (_1^2)H-nucleus, (_1^3)H-nucleus, and (_2^4)He-nucleus inverse reaction cross sections have been determined using the optical model potentials in a wide range of target nuclei started from A=1 to A=232 using several incident particle energies ( E = 2, 8, 10, 20, and 40 MeV). In this work, a large number of optical model available parameters were used to calculate the inverse reaction cross section and compared to investigate the effect of the mass number and incident particle energy on the inverse reaction cross section. All the calculations were performed using MATHLAB programming language.
Źródło:
World Scientific News; 2016, 28; 72-83
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of the (p,n) reaction cross section of radionuclides used for PET applications
Autorzy:
Kilinç, F.
Karpuz, N.
Çetın, B.
Powiązania:
https://bibliotekanauki.pl/articles/1065775.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
13.85.Lg
13.87.Ce
Opis:
Positron emission tomography is an imaging method which plays an important role in the diagnosis and monitoring of cancer cells using radioactive substances. In this study (p,n) reaction cross sections of some radionuclides (Cu-61, Ga-66, Br-76) were calculated using Talys 1.6 nuclear simulation code. The calculated cross-sections were compared with experimental values taken from EXFOR.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 318-319
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(n,2n) and (n,3n) Neutron Induced Reaction Cross Sections above 8 MeV
Autorzy:
Salman, H.
Ünal, R.
Oruncak, B.
Akçaalan, U.
Yalim, H.
Powiązania:
https://bibliotekanauki.pl/articles/1401991.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
24.10.-i
Opis:
Neutron induced reaction cross sections for (n,2n) and (n,3n) have been calculated in the energy range between 8 MeV and 26 MeV. Calculations were made for the target nuclei; $\text{}^{45}Sc,$ $\text{}^{59}Co,$ $\text{}^{89}Y,$ $\text{}^{93}Nb,$ $\text{}^{103}Rh,$ $\text{}^{169}Tm,$ $\text{}^{175}Lu,$ $\text{}^{181}Ta,$ $\text{}^{197}Au,$ $\text{}^{209}Bi$. Calculated results were compared with the available data in EXFOR. Model calculations of present data indicated clearly that some reported data from measurements failed to separate (n,2n) and (n,3n) contributions.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-231-B-235
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Immunogenne wlasciwosci nasion roslin straczkowych
Autorzy:
Szymkiewicz, A
Jedrychowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/828479.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Technologów Żywności
Tematy:
zdrowie czlowieka
soja
groch
nasiona
rosliny straczkowe
reakcje krzyzowe
zywnosc transgeniczna
bialka roslinne
alergie pokarmowe
wlasciwosci immunogenne
zywienie czlowieka
human health
soybean
pea
seed
leguminous plant
cross reaction
transgenic food
vegetable protein
food allergy
immunological property
human nutrition
Opis:
W pracy przedstawiono charakterystykę najbardziej antygennych białek nasion roślin strączkowych, głównie soi i grochu, a także orzeszków ziemnych. Podkreślono znaczenie istnienia reakcji krzyżowych pomiędzy białkami wymienionych nasion. Zwrócono szczególną uwagę na duże rozbieżności w określaniu frakcji najbardziej antygennych w poszczególnych nasionach i w związku z tym, duże zagrożenie zdrowotne dla pewnej grupy atopicznej populacji. Zasygnalizowano również problem, związany z wprowadzaniem do powszechnej konsumpcji żywności genetycznie modyfikowanej.
The present work is a review of the most potent allergenic proteins of legume seeds, mainly soybean, pea seeds, and peanuts. It emphasises the importance of cross-reactivity between proteins of particular seeds and nuts. In the paper, there are discussed some discrepancies in the results reported on the most allergenic protein fractions occurring in particular seeds, as well as threats emerging from ambiguous results to some atopic patient population. The problem connected with more and more common consumption of genetically modified foods is also approached in the present work.
Źródło:
Żywność Nauka Technologia Jakość; 2003, 10, 1; 14-24
1425-6959
Pojawia się w:
Żywność Nauka Technologia Jakość
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculations of (γ,n) Reaction Cross Sections using Different Level Density Models for Some Lanthanide Nuclei
Autorzy:
Akçaalan, U.
Ünal, R.
Sarpün, İ.
Yalim, H.
Oruncak, B.
Powiązania:
https://bibliotekanauki.pl/articles/1401985.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
21.10.Ma
Opis:
The discrete level information deficiency requires usage of level density models in cross section calculations. The total reaction cross sections for gamma-induced reactions through the six level density models with a consistent parameterization of some lanthanides ($\text{}^{141}Pr,$ $\text{}^{142}Nd,$ $\text{}^{144}Sm,$ $\text{}^{153}Eu,$ $\text{}^{159}Tb,$ $\text{}^{160}Gd,$ $\text{}^{165}Ho,$ $\text{}^{175}Lu$) were calculated using TALYS 1.6 in the incident energy range from 5 to 30 MeV. All calculations from the present study were compared with each other and with data available in the literature.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-228-B-230
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of Reaction Cross Sections for Producing Br-75 in the Energy Range of 5-40 MeV
Autorzy:
Salman, H.
Oruncak, B.
Ünal, R.
Powiązania:
https://bibliotekanauki.pl/articles/1401984.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
25.60.Dz
Opis:
The isotope of bromine, ⁷⁵Br ($T_{1/2}$ = 1.6 h), has a considerable interest in nuclear medicine. The radionuclide ⁷⁵Br is a positron emitter and is useful in positron emission tomography (PET) for fast metabolic processes. In this study the reaction cross sections were calculated for suggested various production mechanisms. The cross sections of charged particle-induced reactions, leading to ⁷⁵Br, were calculated for ⁷⁶Se(p,2n)⁷⁵Br, ⁷⁶Se(d,3n)⁷⁵Br, ⁷⁵As(³He,3n)⁷⁵Br and ⁷⁵As(⁴He,4n)⁷⁵Br using TALYS 1.6. The calculated results are compared with measurement data available in literature. The calculated results indicate that, ⁷⁶Se(p,2n)⁷⁵Br and ⁷⁶Se(d,3n)⁷⁵Br reaction channels have higher cross section values than that of ⁷⁵As(³He,3n)⁷⁵Br reaction channel. Moreover all these reaction channels are in the range of a medium-sized cyclotron.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-225-B-227
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Inverse Reaction Cross Sections for Unit Rate Cost Model for Pricing Weld Mesh Reinforcement in Construction Projects
Autorzy:
Samuel, Egwunatum I.
Akpokodje, I. O.
Powiązania:
https://bibliotekanauki.pl/articles/1193018.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Aggregation
Cost model
Estimate
Labour output constant
Time and motion study
Unit rate
Opis:
The subsisting methods of unit rate pricing in the construction industry are either determinate on immediate use basis (analytical pricing) or predictive (cost modeling). The literature cited in this paper showed that cost models used in the industry are spurious. Most of the models attempts to respond to whole building cost from inception to completion with a single formula. This paper argues that on the basis of the units of measurement of the various building elements, a holistic cost model for pricing a complete building cost is a near impossibility. Rather as a negation cost model on the basis of each work item is idealized. Accordingly, this paper responded by generating a unit rate cost model for weld mesh reinforcement. This was done by abstracting and decomposing the relevant cost data and using productivity study by time and motion to determine the various outputs for materials and labour. These were subsequently factored to the cost data to derive the unit rate cost. The paper concludes that the model enjoys flexibility of further mathematical treatment should any of the variable be constrained and recommends that other work items should be modeled if the cost of a project must be known and this model should be used to justify contractor’s tender for weld mesh reinforcement bid.
Źródło:
World Scientific News; 2016, 28; 84-100
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid production of 18F fluoride from 2-fluoroaniline via the 19F(n,2n)18F reaction using 14 MeV neutrons
Autorzy:
Mikołajczak, R.
Staniszewska, J.
Mikołajewski, S.
Rurarz, E.
Powiązania:
https://bibliotekanauki.pl/articles/147126.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
chemical and production yields
fluorine-18
radiochemical separation
(n,2n) reaction cross section
Opis:
No carrier-added 18F fluoride was produced via the 19F(n,2n)18F reaction by 14 MeV neutron irradiation of 2-fluoroaniline and subsequent extraction of the produced 18F fluoride ion with water. The fluoride was then purified by liquid chromatography on a Chromabond-NO2 column. The time required for all chemical procedures was about 1 h. The average chemical separation yield was about 70%. The 18F activity obtained after 3 hours of irradiation at a flux rate of 108 n cm-2s-1 after a necessary 20-min delay was equal to several kBq per gram of fluorine in a 2-fluoroaniline sample, in accordance with the theoretically expected value. Improvement of the 18F production yield can be achieved by increasing neutron fluxes. Neutron generators with 14 MeV neutron fluxes of the order of 1010 n cm-2s-1 can produce tens MBq of 18F, sufficient for whole-day work in biomedical applications. Our results show that 14 MeV neutron irradiation of 2-fluoroaniline is a low cost alternative for the production of this nuclide in the countries which do not posses either cyclotrons or electron linear accelerator facilities.
Źródło:
Nukleonika; 2002, 47, 1; 13-18
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of double differential cross sections of (γ,p) reaction for ¹²C nuclei
Autorzy:
Karpuz, N
Mavı, B.
Akkurt, İ.
Powiązania:
https://bibliotekanauki.pl/articles/1068191.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
5.20.x
32.80.Cy
Opis:
Photonuclear reaction data, is important for basic and applied research. In additional to this, double differential data is especially vital in the field of nuclear medicine. The increase in the number of patients, admitted for treatment of cancer with heavy ions, poses a serious problem in terms of the risk of secondary cancer, as a result of exposure to particles of different energy and angle values, released after the nuclear reaction. The main point here is the possibility of damaging organs other than the treated one by the radiation generated in the reactions during the heavy ion therapy. Based on this, in order to assess the risk of secondary cancer the investigations of the double differential cross sections of reaction are required. Double differential cross sections of (γ,p) photonuclear reaction for ¹²C nuclei were calculated as functions of incoming photon energy and angle. Nuclear reaction simulation program TALYS 1.2 was used in the calculations. The calculated cross sections were compared with both the experimental cross sections and the evaluated cross sections available in literature.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 313-315
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sex propheromone of the pine tree lappet moth Dendrolimus pini and its use in attractant-based monitoring system
Autorzy:
Grodner, J.
Zander, R.
Powiązania:
https://bibliotekanauki.pl/articles/55011.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
cross-coupling reaction
stereoselective reduction
acetal
aldehyde
attractant
Lepidoptera
Lasiocampidae
Pinus sylvestris
field experiment
Scotch pine
sex pheromone
pine tree
lappet moth
Dendrolimus pini
attractant-based monitoring system
needle
forest
Polska
monitoring
insecticide
plant protection
Opis:
The study presents a new strategy of synthesis of the pine-tree lappet moth sex pheromone via hydrolysis of the (5Z,7E)-1,1-diethoxy-5,7-dodecadiene (propheromone) and their using in biological tests with pheromone traps. The field trials showed that a sticky delta traps with propheromone at dose of 2.4 mg was the most suitable for monitoring of the population of the pine tree lappet moth.
Źródło:
Pestycydy; 2010, 1-4
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
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