Relative widths of function classes of L 2(T) defined by a linear differential operator in L q (T)

Xiao, Weiwei

doi:10.1007/s10476-011-0104-1

Cited by 5 publications

(6 citation statements)

References 18 publications

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“…Briand et al (2010), using STEREO data, confirmed that both linear holes and holes associated with IMF directional discontinuities exist, with a relative occurrence rate of 32 and 68%, respectively. In a Cluster study, Xiao et al (2010) showed that linear solar wind magnetic holes -defined as a minimum decrease of the magnetic field strength of 25% and a field rotation of less than 10 • across the hole -are likely to have the shape of a rotational ellipsoid elongated along the IMF with a ratio of the field parallel to perpendicular axes radii of 1.93.…”

Section: Introductionmentioning

confidence: 99%

First observations of magnetic holes deep within the coma of a comet

Plaschke

Karlsson

Götz

et al. 2018

A&A

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The Rosetta spacecraft of the European Space Agency made ground-breaking observations of comet 67P/Churyumov-Gerasimenko and of its cometary environment. We search for magnetic holes in that environment, i.e., significant depressions in the magnetic field strength, measured by the Rosetta fluxgate Magnetometer (MAG) in April and May 2015. In that time frame of two months, we identified 23 magnetic holes. The cometary activity was intermediate and increasing because Rosetta was on the inbound leg toward the Sun. While in April solar wind protons were still observed by Rosetta near the comet, in May these protons were already mostly replaced by heavy cometary ions. Magnetic holes have frequently been observed in the solar wind. We find, for the first time, that magnetic holes exist in the cometary environment even when solar wind protons are almost absent. Some of the properties of the magnetic holes are comparable to those of solar wind holes; they are associated with density enhancements, sometimes associated with co-located current sheets and fast solar wind streams, and are of similar scales. However, particularly in May, the magnetic holes near the comet appear to be more processed, featuring shifted density enhancements and, sometimes, bipolar signatures in magnetic field strength rather than simple depressions. The magnetic holes are of global size with respect to the coma. However, at the comet, they are compressed owing to magnetic field pile-up and draping so that they change in shape. There, the magnetic holes become of comparable size to heavy cometary ion gyroradii, potentially enabling kinetic interactions.

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Section: Introductionmentioning

confidence: 99%

First observations of magnetic holes deep within the coma of a comet

Plaschke

Karlsson

Götz

et al. 2018

A&A

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“…Alginate control sample exhibited T g at 38.43°C while PVAc‐grafted alginate showed T g at 59.99°C, which is due to the hydrophobic effect of PVAc segments. The decrease in T g has been attributed to the plasticization by water, which enhanced segmental movement 27. As has been presented by Lim and coworkers,27 water activity exerted a typical plasticization effect upon the hydrogel resulting the decrease in alginate T g from 56.03°C to 35.12°C as water activity increased from 0.23 to 0.84.…”

Section: Resultsmentioning

confidence: 81%

“…The decrease in T g has been attributed to the plasticization by water, which enhanced segmental movement 27. As has been presented by Lim and coworkers,27 water activity exerted a typical plasticization effect upon the hydrogel resulting the decrease in alginate T g from 56.03°C to 35.12°C as water activity increased from 0.23 to 0.84. The grafting of PVAc achieves similar results as the reduction in water activity because of the hydrophilic acetoxyl groups that helps reducing the bound moisture around alginate backbone.…”

Section: Resultsmentioning

confidence: 81%

Nitric oxide inhibits autophagy in human chondrocytes: Comment on the article by Sasaki et al

Shen¹,

Chen²,

Yan³

2012

Arthritis & Rheumatism

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Poly vinyl acetate grafted calcium alginate hydrogel microspheres were prepared with bovine serum albumin (BSA) as molecular template. The microspheres exhibited homogeneous and core‐shell structure according to different preparation strategy. The rebinding and swelling property of microspheres showed responsiveness toward ionic strength, temperature, and pH. It was found the highest separation factor of 1.85 and imprinting efficiency of 1.75 when the Ca2+ ionic strength was 1.25 and 0.34 mol/kg, respectively. The separation factor was found decreased as temperature grew from 29 to 45°C while the imprinting efficiency reached a peak value at about 37°C. Separation factor of BSA imprinted microspheres at different pH was also recorded and two peaks were found, which were considered to be caused by the similar swollen state due to ionic and covalent crosslinking structure of modified microspheres. The recognition responsiveness is suggested to be influenced by environmental effects due to the changing in imprints' configuration at different swollen states. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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“…On the base of the works in the special function spaces of Liu and Yang, 5 Xiao, 8 Liu and Yang got the following estimate in Ref. 6…”

Section: Background and Main Resultsmentioning

confidence: 99%

Best restriction L₁-approximation of periodic convolution class by generalized splines

Huang

Liu

2014

Int. J. Wavelets Multiresolut Inf. Process.

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Relative widths of function classes of L 2(T) defined by a linear differential operator in L q (T)

Cited by 5 publications

References 18 publications

First observations of magnetic holes deep within the coma of a comet

First observations of magnetic holes deep within the coma of a comet

Nitric oxide inhibits autophagy in human chondrocytes: Comment on the article by Sasaki et al

Best restriction L₁-approximation of periodic convolution class by generalized splines

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Relative widths of function classes of L 2(T) defined by a linear differential operator in L q (T)

Cited by 5 publications

References 18 publications

First observations of magnetic holes deep within the coma of a comet

First observations of magnetic holes deep within the coma of a comet

Nitric oxide inhibits autophagy in human chondrocytes: Comment on the article by Sasaki et al

Best restriction L1-approximation of periodic convolution class by generalized splines

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Best restriction L₁-approximation of periodic convolution class by generalized splines