93 research outputs found
Роль социологических опросов в изучении водопотребления населения
Доказано, що соціологічні опитування є важливим інструментам формування програм соціальної та екологічної скерованості. Вони дозволяють отримати не лише суб'єктивну, але і об'єктивну оцінку стану довкілля, інформацію про ефективність муніципальних та державних програм, можуть бути використані для проведення маркетингових досліджень.It is shown that sociological questionnaire are the important tool at formation of the programs of a social and ecological orientation, allow to receive not only subjective, but also objective estimation of a condition of an environment, allow to receive the information not only about efficiency of the municipal and state programs, but also to be used for realization of marketing researches
Macrophage proliferation distinguishes 2 subgroups of knee osteoarthritis patients
Osteoarthritis (OA) is a leading cause of disability, globally. Despite an emerging role for synovial inflammation in OA pathogenesis, attempts to target inflammation therapeutically have had limited success. A better understanding of the cellular and molecular processes occurring in the OA synovium is needed to develop novel therapeutics. We investigated macrophage phenotype and gene expression in synovial tissue of OA and inflammatory-arthritis (IA) patients. Compared with IA, OA synovial tissue contained higher but variable proportions of macrophages (P < 0.001). These macrophages exhibited an activated phenotype, expressing folate receptor-2 and CD86, and displayed high phagocytic capacity. RNA sequencing of synovial macrophages revealed 2 OA subgroups. Inflammatory-like OA (iOA) macrophages are closely aligned to IA macrophages and are characterized by a cell proliferation signature. In contrast, classical OA (cOA) macrophages display cartilage remodeling features. Supporting these findings, when compared with cOA, iOA synovial tissue contained higher proportions of macrophages (P < 0.01), expressing higher levels of the proliferation marker Ki67 (P < 0.01). These data provide new insight into the heterogeneity of OA synovial tissue and suggest distinct roles of macrophages in pathogenesis. Our findings could lead to the stratification of OA patients for suitable disease-modifying treatments and the identification of novel therapeutic targets
Проблематика научных исследований И.Г. Спасского
У статті розглянуто широке коло наукових інтересів відомого радянського вченого І.Г. Спасського у російській нумізматиці – від староруських монет Х ст. й українських дукачів, якими він почав займатися ще в студентські роки, до російських і радянських монет першої половини ХХ ст. та західноєвропейських єфимків з російським надкарбуванням періоду Олексія Михайловича.В статье рассмотрен широкий круг научных интересов крупнейшего советского ученого И.Г.Спасского в русской нумизматике – от древнерусских монет Х в. и украинских дукачей, которыми он начал заниматься еще в студенческие годы, до русских и советских монет первой половины ХХ в. и западноевропейских ефимков с русскими надчеканками времени Алексея Михайловича.The wide circle of scientific interests of I.G. Spassky – the famous soviet scientist in Russian numismatics is considered in the article – from the old-russian chinks of 10 century and Ukrainian dukach, which he began to be engaged in as early as student years, to the Russian and soviet chinks of the first half of 20 century and West European yefimks with the Russian supercoinage of period of zar Alexei Michailivich
A case of mistaken identity: HSPs are no DAMPs but DAMPERs
Until recently, the immune system was seen solely as a defense system with its primary task being the elimination of unwanted microbial invaders. Currently, however, the functional significance of the immune system has obtained a much wider perspective, to include among others the maintenance and restoration of homeostasis following tissue damage. In this latter aspect, there is a growing interest in the identification of molecules involved, such as the so-called danger or damage-associated molecular patterns (DAMPs), also called alarmins. Since heat shock proteins are archetypical molecules produced under stressful conditions, such as tissue damage or inflammation, they are frequently mentioned as prime examples of DAMPs (Bianchi, J Leukoc Biol 81:1–5, 2007; Kono and Rock, Nat Rev Immunol 8:279–289, 2008; Martin-Murphy et al., Toxicol Lett 192:387–394, 2010). See for instance also a recent review (Chen and Nunez, Science 298:1395–1401, 2010). Contrary to this description, we recently presented some of the arguments against a role of heat shock protein as DAMPs (Broere et al., Nat Rev Immunol 11:565-c1, 2011). With this perspective and reflection article, we hope to elaborate on this debate and provide additional thoughts to further ignite this discussion on this critical and evolving issue
In-situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory
The IceCube Neutrino Observatory instruments about 1 km3 of deep, glacial ice at the geographic South Pole using 5160 photomultipliers to detect Cherenkov light emitted by charged relativistic particles. A unexpected light propagation effect observed by the experiment is an anisotropic attenuation, which is aligned with the local flow direction of the ice. Birefringent light propagation has been examined as a possible explanation for this effect. The predictions of a first-principles birefringence model developed for this purpose, in particular curved light trajectories resulting from asymmetric diffusion, provide a qualitatively good match to the main features of the data. This in turn allows us to deduce ice crystal properties. Since the wavelength of the detected light is short compared to the crystal size, these crystal properties do not only include the crystal orientation fabric, but also the average crystal size and shape, as a function of depth. By adding small empirical corrections to this first-principles model, a quantitatively accurate description of the optical properties of the IceCube glacial ice is obtained. In this paper, we present the experimental signature of ice optical anisotropy observed in IceCube LED calibration data, the theory and parametrization of the birefringence effect, the fitting procedures of these parameterizations to experimental data as well as the inferred crystal properties.</p
In situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory
The IceCube Neutrino Observatory instruments about 1 km3 of deep, glacial ice at the geographic South Pole. It uses 5160 photomultipliers to detect Cherenkov light emitted by charged relativistic particles. An unexpected light propagation effect observed by the experiment is an anisotropic attenuation, which is aligned with the local flow direction of the ice. We examine birefringent light propagation through the polycrystalline ice microstructure as a possible explanation for this effect. The predictions of a first-principles model developed for this purpose, in particular curved light trajectories resulting from asymmetric diffusion, provide a qualitatively good match to the main features of the data. This in turn allows us to deduce ice crystal properties. Since the wavelength of the detected light is short compared to the crystal size, these crystal properties include not only the crystal orientation fabric, but also the average crystal size and shape, as a function of depth. By adding small empirical corrections to this first-principles model, a quantitatively accurate description of the optical properties of the IceCube glacial ice is obtained. In this paper, we present the experimental signature of ice optical anisotropy observed in IceCube light-emitting diode (LED) calibration data, the theory and parameterization of the birefringence effect, the fitting procedures of these parameterizations to experimental data, and the inferred crystal properties.Peer Reviewe
TXS 0506+056 with Updated IceCube Data
Past results from the IceCube Collaboration have suggested that the blazar TXS 0506+056 is a potential source of astrophysical neutrinos. However, in the years since there have been numerous updates to event processing and reconstruction, as well as improvements to the statistical methods used to search for astrophysical neutrino sources. These improvements in combination with additional years of data have resulted in the identification of NGC 1068 as a second neutrino source candidate. This talk will re-examine time-dependent neutrino emission from TXS 0506+056 using the most recent northern-sky data sample that was used in the analysis of NGC 1068. The results of using this updated data sample to obtain a significance and flux fit for the 2014 TXS 0506+056 "untriggered" neutrino flare are reported
In situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory
The IceCube Neutrino Observatory instruments
about 1 km3 of deep, glacial ice at the geographic South
Pole. It uses 5160 photomultipliers to detect Cherenkov
light emitted by charged relativistic particles. An unexpected
light propagation effect observed by the experiment is an
anisotropic attenuation, which is aligned with the local flow
direction of the ice. We examine birefringent light propaga-
tion through the polycrystalline ice microstructure as a pos-
sible explanation for this effect. The predictions of a first-
principles model developed for this purpose, in particular
curved light trajectories resulting from asymmetric diffusion,
provide a qualitatively good match to the main features of the
data. This in turn allows us to deduce ice crystal properties.
Since the wavelength of the detected light is short compared
to the crystal size, these crystal properties include not only
the crystal orientation fabric, but also the average crystal size
and shape, as a function of depth. By adding small empiri-
cal corrections to this first-principles model, a quantitatively
accurate description of the optical properties of the IceCube
glacial ice is obtained. In this paper, we present the exper-
imental signature of ice optical anisotropy observed in Ice-
Cube light-emitting diode (LED) calibration data, the theory
and parameterization of the birefringence effect, the fitting
procedures of these parameterizations to experimental data,
and the inferred crystal propertie
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