118 research outputs found
Centrosymmetric molecules as possible carriers of diffuse interstellar bands
In this paper, we present new data with interstellar C2 (Phillips bands A-X),
from observations made with the Ultraviolet-Visual Echelle Spectrograph of the
European Southern Observatory. We have determined the interstellar column
densities and excitation temperatures of C2 for nine Galactic lines. For seven
of these, C2 has never been observed before, so in this case the still small
sample of interstellar clouds (26 lines of sight), where a detailed analysis of
C2 excitation has been made, has increased significantly. This paper is a
continuation of previous works where interstellar molecules (C2 and diffuse
interstellar bands) have been analysed. Because the sample of interstellar
clouds with C2 has increased, we can show that the width and shape of the
profiles of some diffuse interstellar bands (6196 and 5797 A) apparently depend
on the gas kinetic and rotational temperatures of C2; the profiles are broader
because of the higher values of the gas kinetic and rotational temperatures of
C2. There are also diffuse interstellar bands (4964 and 5850 A) for which this
effect does not exist.Comment: 8 pages, 4 figures, accepted to MNRAS 201
KorzyĆci z podejmowania regularnej aktywnoĆci fizycznej przez osoby starsze = The benefits of regular physical activity for the elderly
KaĆșmierczak U., RadzimiĆska A., DzierĆŒanowski M., BuĆatowicz I., Strojek K., Srokowski G., Zukow W. KorzyĆci z podejmowania regularnej aktywnoĆci fizycznej przez osoby starsze = The benefits of regular physical activity for the elderly. Journal of Education, Health and Sport. 2015;5(1):56-68. ISSN 2391-8306. DOI: 10.5281/zenodo.13935http://ojs.ukw.edu.pl/index.php/johs/article/view/2015%3B5%281%29%3A56-68https://pbn.nauka.gov.pl/works/524287http://dx.doi.org/10.5281/zenodo.13935Formerly Journal of Health Sciences. ISSN 1429-9623 / 2300-665X. Archives 2011 â 2014 http://journal.rsw.edu.pl/index.php/JHS/issue/archive Deklaracja.Specyfika i zawartoĆÄ merytoryczna czasopisma nie ulega zmianie.Zgodnie z informacjÄ
MNiSW z dnia 2 czerwca 2014 r., ĆŒe w roku 2014 nie bÄdzie przeprowadzana ocena czasopism naukowych; czasopismo o zmienionym tytule otrzymuje tyle samo punktĂłw co na wykazie czasopism naukowych z dnia 31 grudnia 2014 r.The journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1089. (31.12.2014).© The Author (s) 2015;This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland and Radom University in Radom, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercialuse, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.Received: 15.06.2014. Revised 05.10.2014. Accepted: 25.12.2014. KorzyĆci z podejmowania regularnej aktywnoĆci fizycznej przez osoby starszeThe benefits of regular physical activity for the elderly KaĆșmierczak U.Âč, RadzimiĆska A.Âč, DzierĆŒanowski M.ÂČ, BuĆatowicz I.Âč, Strojek K.Âč, Srokowski G.Âč, Zukow W.³ Katedra Fizjoterapii CM UMK w Toruniu1ZakĆad Kinezyterapii i MasaĆŒu Leczniczego UMK CM w ToruniuÂČZakĆad Terapii Manualnej UMK CM w Toruniu3WydziaĆ Kultury Fizycznej, Zdrowia i Turystyki, Uniwersytet Kazimierza Wielkiego w Bydgoszczy SĆowa kluczowe: regularna aktywnoĆÄ fizyczna, osoby starsze. Keywords: regular physical activity, elderly. AbstraktW paĆstwach rozwiniÄtych i rozwijajÄ
cych siÄ coraz wiÄkszÄ
grupÄ spoĆeczeĆstw stanowiÄ
seniorzy.ĆwiadomoĆÄ problemu spowodowaĆa podjÄcie powszechnej dyskusji ekspertĂłw i praktykĂłw z dziedzin medycznych na temat koniecznoĆci dziaĆaĆ niezbÄdnych dla zapewnienia spoĆeczeĆstwom pomyĆlnej staroĆci.Od dawna wskazuje siÄ, ĆŒe brak aktywnoĆci ruchowej jest dla zdrowia niebezpieczny.Starzeniu siÄ ukĆadu sercowo-naczyniowego towarzyszy duĆŒo niekorzystnych zmian strukturalnych, czynnoĆciowych i biochemicznych. Za typowe dla tego okresu zmiany uwaĆŒa siÄ osĆabienie moĆŒliwoĆci relaksacji wĆĂłkien miÄĆniowych, co moĆŒe byÄ przyczynÄ
rozkurczowej niewydolnoĆci serca.Trening zdrowotny â jest rodzajem aktywnoĆci fizycznej wykonywanej z powodĂłw medycznych. Celem jest uzyskanie efektĂłw fizycznych oraz psychicznych przeciwdziaĆajÄ
cych zmniejszaniu siÄ zdolnoĆci adaptacyjnych organizmu.Eksperci przekonujÄ
osoby starsze o korzyĆciach pĆynÄ
cych z aktywnego fizycznie stylu ĆŒycia. Bogate piĆmiennictwo poruszajÄ
ce tematykÄ medycznych aspektĂłw procesu starzenia, mĂłwi o niezaprzeczalnym znaczeniu ruchu dla toczÄ
cych siÄ w ludzkim ciele procesĂłw inwolucyjnych. AktywnoĆÄ fizyczna odpowiednio dozowana jest w stanie wyraĆșnie zmniejszyÄ negatywny wpĆyw tych zmian i jak najdĆuĆŒej pozwoliÄ utrzymaÄ zdrowie fizyczne, psychiczne i spoĆeczne. ZauwaĆŒono, ĆŒe systematycznie dozowany wysiĆek fizyczny zmniejsza ryzyko wystÄ
pienia wielu chorĂłb np. cukrzycy, miaĆŒdĆŒycy, choroby niedokrwiennej serca.Liczne badania naukowe i bogate piĆmiennictwo gerontologiczne przedstawiajÄ
najnowsze doniesienia specjalistĂłw o tym, jak naleĆŒy prawidĆowo przygotowaÄ i prowadziÄ trening fizyczny z osobami starszymi. Ludzki organizm zaczyna starzeÄ siÄ okoĆo 20-25 roku ĆŒycia. Zmiany dotyczÄ
wszystkich ukĆadĂłw ciaĆa. Najbardziej odczuwalne w ĆŒyciu codziennym sÄ
te, ktĂłre zachodzÄ
w ukĆadzie krÄ
ĆŒeniowo-oddechowym i miÄĆniowo-szkieletowym. Trening fizyczny dla osoby starszej, aby byĆ skuteczny i bezpieczny, powinien byÄ skonstruowany i nadzorowany przez specjalistÄ. AbstractIn developed and developing countries an increasing group of societies are seniors. Awareness of the problem has led to widespread discussion of experts and practitioners from the fields of medical devices on the need for the measures necessary to ensure that societies successful old age. For a long time, indicates that the lack of motor activity is dangerous to health. Aging of the cardiovascular system is accompanied by a lot of adverse structural changes and biochemical function.For typical of this period of change is believed to be weakening the possibility of relaxation of the muscle fibers, which may cause diastolic heart failure. Training of health-is a type of physical activity performed for medical reasons. The goal is to get mental and physical effects against reducing the adaptability of the body. Experts are finding older people about the benefits of a physically active lifestyle. Rich writing evocative theme of medical aspects of the aging process, speaks of undeniable importance for traffic in human flesh involutional processes. Physical activity appropriately dosed is able to clearly reduce the negative impact of these changes and as long as you can afford to maintain the physical, mental and social health. It was noted that systematically dosed exercise reduces the risk of many diseases, eg. diabetes mellitus, atherosclerosis, coronary heart disease.Numerous scientific studies and extensive external links gerontologiczne submit the latest reports of professionals about how to properly prepare and conduct physical training with the elderly. The human body begins to age about 20-25 years of age. The changes apply to all body systems. Most felt in everyday life are the ones that occur in the breathing cardiopulmonary and musculo-skeletal. Physical training for older persons, in order to be effective and safe, should be designed and supervised by a specialist
The chemistry of C3 & Carbon Chain Molecules in DR21(OH)
(Abridged) We have observed velocity resolved spectra of four ro-vibrational
far-infrared transitions of C3 between the vibrational ground state and the
low-energy nu2 bending mode at frequencies between 1654--1897 GHz using HIFI on
board Herschel, in DR21(OH), a high mass star forming region. Several
transitions of CCH and c-C3H2 have also been observed with HIFI and the IRAM
30m telescope. A gas and grain warm-up model was used to identify the primary
C3 forming reactions in DR21(OH). We have detected C3 in absorption in four
far-infrared transitions, P(4), P(10), Q(2) and Q(4). The continuum sources MM1
and MM2 in DR21(OH) though spatially unresolved, are sufficiently separated in
velocity to be identified in the C3 spectra. All C3 transitions are detected
from the embedded source MM2 and the surrounding envelope, whereas only Q(4) &
P(4) are detected toward the hot core MM1. The abundance of C3 in the envelope
and MM2 is \sim6x10^{-10} and \sim3x10^{-9} respectively. For CCH and c-C3H2 we
only detect emission from the envelope and MM1. The observed CCH, C3, and
c-C3H2 abundances are most consistent with a chemical model with
n(H2)\sim5x10^{6} cm^-3 post-warm-up dust temperature, T_max =30 K and a time
of \sim0.7-3 Myr. Post warm-up gas phase chemistry of CH4 released from the
grain at t\sim 0.2 Myr and lasting for 1 Myr can explain the observed C3
abundance in the envelope of DR21(OH) and no mechanism involving
photodestruction of PAH molecules is required. The chemistry in the envelope is
similar to the warm carbon chain chemistry (WCCC) found in lukewarm corinos.
The observed lower C3 abundance in MM1 as compared to MM2 and the envelope
could be indicative of destruction of C3 in the more evolved MM1. The timescale
for the chemistry derived for the envelope is consistent with the dynamical
timescale of 2 Myr derived for DR21(OH) in other studies.Comment: 11 Pages, 6 figures, accepted for publication in A&
Excitation and Abundance of C3 in star forming cores:Herschel/HIFI observations of the sight-lines to W31C and W49N
We present spectrally resolved observations of triatomic carbon (C3) in
several ro-vibrational transitions between the vibrational ground state and the
low-energy nu2 bending mode at frequencies between 1654-1897 GHz along the
sight-lines to the submillimeter continuum sources W31C and W49N, using
Herschel's HIFI instrument. We detect C3 in absorption arising from the warm
envelope surrounding the hot core, as indicated by the velocity peak position
and shape of the line profile. The sensitivity does not allow to detect C3
absorption due to diffuse foreground clouds. From the column densities of the
rotational levels in the vibrational ground state probed by the absorption we
derive a rotation temperature (T_rot) of ~50--70 K, which is a good measure of
the kinetic temperature of the absorbing gas, as radiative transitions within
the vibrational ground state are forbidden. It is also in good agreement with
the dust temperatures for W31C and W49N. Applying the partition function
correction based on the derived T_rot, we get column densities N(C3)
~7-9x10^{14} cm^{-2} and abundance x(C3)~10^{-8} with respect to H2. For W31C,
using a radiative transfer model including far-infrared pumping by the dust
continuum and a temperature gradient within the source along the line of sight
we find that a model with x(C3)=10^{-8}, T_kin=30-50 K, N(C3)=1.5 10^{15}
cm^{-2} fits the observations reasonably well and provides parameters in very
good agreement with the simple excitation analysis.Comment: Accepted for publication in Astronomy and Astrophysics (HIFI first
results issue
The Principle Of Local Rotational Invariance And The Coexistence Of Magnetism, Charge And Superconductivity
We propose a macroscopic description of the superconducting state in presence
of an applied external magnetic field in terms of first order differential
equations. They describe a corrugated two-component order parameter intertwined
with a spin-charged background, caused by spin correlations and charged
dislocations. The first order differential equations are a consequence of a
Weitzenb\"ock-Liechnorowitz identity which renders a SUL(2) \otimes UL(1)
invariant ground state, based on (L) local rotational and electromagnetic gauge
symmetry. The proposal is based on a long ago developed formalism by \'Elie
Cartan to investigate curved spaces, viewed as a collection of small Euclidean
granules that are translated and rotated with respect to each other. \'Elie
Cartan's formalism unveils the principle of local rotational invariance as a
gauge symmetry because the global SU(2) invariance of the order parameter is
turned local by the interlacement of spin and charge to pairing.Comment: 19 pages, 3 figure
Nitrogen hydrides in interstellar gas: Herschel/HIFI observations towards G10.6-0.4 (W31C)
The HIFI instrument on board the Herschel Space Observatory has been used to
observe interstellar nitrogen hydrides along the sight-line towards G10.6-0.4
in order to improve our understanding of the interstellar chemistry of
nitrogen. We report observations of absorption in NH N=1-0, J=2-1 and ortho-NH2
1_1,1-0_0,0. We also observed ortho-NH3 1_0-0_0, and 2_0-1_0, para-NH3 2_1-1_1,
and searched unsuccessfully for NH+. All detections show emission and
absorption associated directly with the hot-core source itself as well as
absorption by foreground material over a wide range of velocities. All spectra
show similar, non-saturated, absorption features, which we attribute to diffuse
molecular gas. Total column densities over the velocity range 11-54 km/s are
estimated. The similar profiles suggest fairly uniform abundances relative to
hydrogen, approximately 6*10^-9, 3*10^-9, and 3*10^-9 for NH, NH2, and NH3,
respectively. These abundances are discussed with reference to models of
gas-phase and surface chemistry.Comment: 5 pages, 3 figures, 2 online pages with 2 figures. Accepted for
publication in A&A July 6 (Herschel/HIFI special issue
Detection of hydrogen fluoride absorption in diffuse molecular clouds with Herschel/HIFI: a ubiquitous tracer of molecular gas
We discuss the detection of absorption by interstellar hydrogen fluoride (HF)
along the sight line to the submillimeter continuum sources W49N and W51. We
have used Herschel's HIFI instrument in dual beam switch mode to observe the
1232.4762 GHz J = 1 - 0 HF transition in the upper sideband of the band 5a
receiver. We detected foreground absorption by HF toward both sources over a
wide range of velocities. Optically thin absorption components were detected on
both sight lines, allowing us to measure - as opposed to obtain a lower limit
on - the column density of HF for the first time. As in previous observations
of HF toward the source G10.6-0.4, the derived HF column density is typically
comparable to that of water vapor, even though the elemental abundance of
oxygen is greater than that of fluorine by four orders of magnitude. We used
the rather uncertain N(CH)-N(H2) relationship derived previously toward diffuse
molecular clouds to infer the molecular hydrogen column density in the clouds
exhibiting HF absorption. Within the uncertainties, we find that the abundance
of HF with respect to H2 is consistent with the theoretical prediction that HF
is the main reservoir of gas-phase fluorine for these clouds. Thus, hydrogen
fluoride has the potential to become an excellent tracer of molecular hydrogen,
and provides a sensitive probe of clouds of small H2 column density. Indeed,
the observations of hydrogen fluoride reported here reveal the presence of a
low column density diffuse molecular cloud along the W51 sight line, at an LSR
velocity of ~ 24kms-1, that had not been identified in molecular absorption
line studies prior to the launch of Herschel.Comment: 4 pages, 3 figures, A&A Letter special issue, accepted on 07/13/201
Thermal diffusivity, effusivity and conductivity of CdMnTe mixed crystals
Cd1-xMnxTe mixed crystals belong to a class of materials called ââsemimagnetic semiconductorââ or diluted magnetic semiconductor (DMS) with addition of magnetic ions like Mn2+ implemented into crystal structure. The crystals under investigation were grown from the melt by the high pressure high temperature modified Bridgman method in the range of composition 0 < x < 0.7. Thermal properties of these compounds have been investigated by means of photopyroelectric (PPE) calorimetry in both, back and front detection configuration. The values of the thermal diffusivity and effusivity were derived from experimental data. Thermal conductivity of the specimens was calculated from the simple theoretical dependencies between thermal parameters. The influence of Mn concentration on thermal properties of Cd1-xMnxTe crystals have been presented and discussed
Cell cycle-dependent phosphorylation of pRb-like protein in root meristem cells of Vicia faba
The retinoblastoma tumor suppressor protein (pRb) regulates cell cycle progression by controlling the G1-to-S phase transition. As evidenced in mammals, pRb has three functionally distinct binding domains and interacts with a number of proteins including the E2F family of transcription factors, proteins with a conserved LxCxE motif (D-type cyclin), and c-Abl tyrosine kinase. CDK-mediated phosphorylation of pRb inhibits its ability to bind target proteins, thus enabling further progression of the cell cycle. As yet, the roles of pRb and pRb-binding factors have not been well characterized in plants. By using antibody which specifically recognizes phosphorylated serines (S807/811) in the c-Abl tyrosine kinase binding C-domain of human pRb, we provide evidence for the cell cycle-dependent changes in pRb-like proteins in root meristems cells of Vicia faba. An increased phosphorylation of this protein has been found correlated with the G1-to-S phase transition
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