8 research outputs found
Frequency rising sub-THz emission from solar flare ribbons
Observations of solar flares at sub-THz frequencies (millimetre and sub-millimetre wavelengths) over the last two decades often show a spectral component rising with frequency. Unlike a typical gyrosynchrotron spectrum decreasing with frequency or a weak thermal component from hot coronal plasma, the observations can demonstrate a high flux level (up to βΌ104 solar flux units at 0.4 THz) and fast variability on sub-second timescales. Although, many models have been put forward to explain the puzzling observations, none of them has clear observational support. Here we propose a scenario to explain the intriguing sub-THz observations. We show that the model, based on free-free emission from the plasma of flare ribbons at temperatures 104β
ββ
106 K, is consistent with all existing observations of frequency-rising sub-THz flare emission. The model provides a temperature diagnostic of the flaring chromosphere and suggests fast heating and cooling of the dense transition region plasma
Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΆΠ΅Π»ΡΡΡ Π½ΠΎΠ³ΡΠ΅ΠΉ
Yellow nail syndrome is an extremely rare syndrome, mainly in people over 50 years of age, occurring both systemically and in isolation and requiring the most careful collection of anamnesis, since this condition has a close relationship with respiratory diseases, malignant neoplasms of internal organs and rheumatoid arthritis. Moreover, this rare disease is not sufficiently studied to fully understand its pathogenesis and effective treatment. Patients pay attention to the yellow color of the nails, associated with the deposition of melanin, bile pigments and hemosiderin in the submarginal space, slowing down the growth and thickening of the nail. It should be noted that the change in the nail plates can be observed long before the other clinical manifestations of this syndrome are detected, and probably this can in some cases serve as a harbinger of incipient changes in the lung tissue, neoplasms and changes in the lymphatic vessels. In this regard, it is extremely important to clearly differentiate this condition and refer patients to related specialists for verification of the diagnosis and further treatment.Π‘ΠΈΠ½Π΄ΡΠΎΠΌ ΠΆΠ΅Π»ΡΡΡ
Π½ΠΎΠ³ΡΠ΅ΠΉ ΠΊΡΠ°ΠΉΠ½Π΅ ΡΠ΅Π΄ΠΊΠΎ Π²ΡΡΡΠ΅ΡΠ°ΡΡΠΈΠΉΡΡ ΡΠΈΠ½Π΄ΡΠΎΠΌ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎ Ρ Π»ΠΈΡ ΡΡΠ°ΡΡΠ΅ 50 Π»Π΅Ρ, ΠΏΡΠΎΡΠ΅ΠΊΠ°ΡΡΠΈΠΉ ΠΊΠ°ΠΊ ΡΠΈΡΡΠ΅ΠΌΠ½ΠΎ, ΡΠ°ΠΊ ΠΈ ΠΈΠ·ΠΎΠ»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎ ΠΈ ΡΡΠ΅Π±ΡΡΡΠΈΠΉ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ ΡΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ±ΠΎΡΠ° Π°Π½Π°ΠΌΠ½Π΅Π·Π°, ΡΠ°ΠΊ ΠΊΠ°ΠΊ Ρ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ ΡΠ΅ΡΠ½Π°Ρ Π²Π·Π°ΠΈΠΌΠΎΡΠ²ΡΠ·Ρ Ρ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡΠΌΠΈ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½ΡΡ
ΠΏΡΡΠ΅ΠΉ, Π·Π»ΠΎΠΊΠ°ΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠΌΠΈ Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ² ΠΈ ΡΠ΅Π²ΠΌΠ°ΡΠΎΠΈΠ΄Π½ΡΠΌ Π°ΡΡΡΠΈΡΠΎΠΌ. ΠΠΎΠ»Π΅Π΅ ΡΠΎΠ³ΠΎ, Π΄Π°Π½Π½ΠΎΠ΅ ΡΠ΅Π΄ΠΊΠΎΠ΅ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΎ Π΄Π»Ρ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ½ΠΈΠΌΠ°Π½ΠΈΡ Π΅Π³ΠΎ ΠΏΠ°ΡΠΎΠ³Π΅Π½Π΅Π·Π° ΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ. ΠΠ°ΡΠΈΠ΅Π½ΡΡ ΠΎΠ±ΡΠ°ΡΠ°ΡΡ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅ Π½Π° ΠΆΠ΅Π»ΡΡΠΉ ΡΠ²Π΅Ρ Π½ΠΎΠ³ΡΠ΅ΠΉ, ΡΠ²ΡΠ·Π°Π½Π½ΡΠΉ Ρ ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π² ΠΏΠΎΠ΄Π½ΠΎΠ³ΡΠ΅Π²ΠΎΠΌ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π΅ ΠΌΠ΅Π»Π°Π½ΠΈΠ½Π°, ΠΆΠ΅Π»ΡΠ½ΡΡ
ΠΏΠΈΠ³ΠΌΠ΅Π½ΡΠΎΠ² ΠΈ Π³Π΅ΠΌΠΎΡΠΈΠ΄Π΅ΡΠΈΠ½Π°, Π·Π°ΠΌΠ΅Π΄Π»Π΅Π½ΠΈΠ΅ ΡΠΎΡΡΠ° ΠΈ ΡΡΠΎΠ»ΡΠ΅Π½ΠΈΠ΅ Π½ΠΎΠ³ΡΡ. Π‘Π»Π΅Π΄ΡΠ΅Ρ ΠΎΡΠΌΠ΅ΡΠΈΡΡ, ΡΡΠΎ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π½ΠΎΠ³ΡΠ΅Π²ΡΡ
ΠΏΠ»Π°ΡΡΠΈΠ½ ΠΌΠΎΠΆΠ΅Ρ Π½Π°Π±Π»ΡΠ΄Π°ΡΡΡΡ Π·Π°Π΄ΠΎΠ»Π³ΠΎ Π΄ΠΎ ΡΠΎΠ³ΠΎ, ΠΊΠ°ΠΊ ΠΎΠ±Π½Π°ΡΡΠΆΠΈΠ²Π°ΡΡΡΡ ΠΎΡΡΠ°Π»ΡΠ½ΡΠ΅ ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΡΠΈΠ½Π΄ΡΠΎΠΌΠ°, ΠΈ, Π²Π΅ΡΠΎΡΡΠ½ΠΎ, ΡΡΠΎ ΠΌΠΎΠΆΠ΅Ρ Π² Π½Π΅ΠΊΠΎΡΠΎΡΡΡ
ΡΠ»ΡΡΠ°ΡΡ
ΡΠ»ΡΠΆΠΈΡΡ ΠΏΡΠ΅Π΄Π²Π΅ΡΡΠ½ΠΈΠΊΠΎΠΌ Π½Π°ΡΠΈΠ½Π°ΡΡΠΈΡ
ΡΡ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΠΉ Π² Π»Π΅Π³ΠΎΡΠ½ΠΎΠΉ ΡΠΊΠ°Π½ΠΈ, Π½ΠΎΠ²ΠΎΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠΉ ΠΈ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ Π»ΠΈΠΌΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΎΡΡΠ΄ΠΎΠ². Π ΡΠ²ΡΠ·ΠΈ Ρ ΡΡΠΈΠΌ ΠΊΡΠ°ΠΉΠ½Π΅ Π²Π°ΠΆΠ½ΠΎ ΡΠ΅ΡΠΊΠΎ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΡΠΎΠ²Π°ΡΡ Π΄Π°Π½Π½ΠΎΠ΅ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅ ΠΈ Π½Π°ΠΏΡΠ°Π²Π»ΡΡΡ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΊ ΡΠΌΠ΅ΠΆΠ½ΡΠΌ ΡΠΏΠ΅ΡΠΈΠ°Π»ΠΈΡΡΠ°ΠΌ Π΄Π»Ρ Π²Π΅ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π΄ΠΈΠ°Π³Π½ΠΎΠ·Π° ΠΈ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ
ΠΠΈΠ½Π΅ΠΉΠ½ΡΠΉ IGA-Π·Π°Π²ΠΈΡΠΈΠΌΡΠΉ Π±ΡΠ»Π»Π΅Π·Π½ΡΠΉ Π΄Π΅ΡΠΌΠ°ΡΠΎΠ· Ρ ΡΠ΅Π±Π΅Π½ΠΊΠ° 2 Π»Π΅Ρ
Linear IgA-dependent bullous dermatosis is a rare subepidermal bladderworm disease that occurs in both adults and children. The pathogenesis of the disease, regardless of age, is the same, where the basis is the autoimmune response to antigens of the basal membrane zones of the skin, the clinical picture in childhood differs from the manifestations at an older age, having a clear picture and localization of manifestations. The causes of the onset of the disease in older people are most often associated with taking medications, manifested as a side effect of the therapy being taken, cancer, and in children, both an acquired character and a genetic predisposition are responsible for the manifestation of linear IgA-dependent bullous dermatosis. The diagnosis can be confirmed by histological and immunofluorescence analysis.ΠΠΈΠ½Π΅ΠΉΠ½ΡΠΉ IgA-Π·Π°Π²ΠΈΡΠΈΠΌΡΠΉ Π±ΡΠ»Π»Π΅Π·Π½ΡΠΉ Π΄Π΅ΡΠΌΠ°ΡΠΎΠ· ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ΅Π΄ΠΊΠΈΠΌ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠ΅ΠΌ Ρ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΡΠ±ΡΠΏΠΈΠ΄Π΅ΡΠΌΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠ·ΡΡΠ΅ΠΉ, ΠΊΠΎΡΠΎΡΠΎΠ΅ Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ ΠΊΠ°ΠΊ Ρ Π²Π·ΡΠΎΡΠ»ΡΡ
, ΡΠ°ΠΊ ΠΈ Ρ Π΄Π΅ΡΠ΅ΠΉ. ΠΠ°ΡΠΎΠ³Π΅Π½Π΅Π· Π±ΠΎΠ»Π΅Π·Π½ΠΈ Π²Π½Π΅ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ Π²ΠΎΠ·ΡΠ°ΡΡΠ° ΠΎΠ΄ΠΈΠ½Π°ΠΊΠΎΠ², Π² ΠΎΡΠ½ΠΎΠ²Π΅ Π»Π΅ΠΆΠΈΡ Π°ΡΡΠΎΠΈΠΌΠΌΡΠ½Π½ΡΠΉ ΠΎΡΠ²Π΅Ρ Π½Π° Π°Π½ΡΠΈΠ³Π΅Π½Ρ Π·ΠΎΠ½ Π±Π°Π·Π°Π»ΡΠ½ΠΎΠΉ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ ΠΊΠΎΠΆΠΈ, ΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΊΠ°ΡΡΠΈΠ½Π° Π² Π΄Π΅ΡΡΠΊΠΎΠΌ Π²ΠΎΠ·ΡΠ°ΡΡΠ΅ ΡΠ°Π·Π½ΠΈΡΡΡ Ρ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΡΠΌΠΈ Π² Π±ΠΎΠ»Π΅Π΅ ΡΡΠ°ΡΡΠ΅ΠΌ Π²ΠΎΠ·ΡΠ°ΡΡΠ΅, ΠΈΠΌΠ΅Ρ ΠΎΡΡΠ΅ΡΠ»ΠΈΠ²ΡΡ ΠΊΠ°ΡΡΠΈΠ½Ρ ΠΈ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°ΡΠΈΡ ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠΉ. ΠΡΠΈΡΠΈΠ½Ρ Π²ΠΎΠ·Π½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ Ρ Π»ΠΈΡ ΡΡΠ°ΡΡΠ΅Π³ΠΎ Π²ΠΎΠ·ΡΠ°ΡΡΠ° ΡΠ°ΡΠ΅ Π²ΡΠ΅Π³ΠΎ ΡΠ²ΡΠ·Π°Π½Ρ Ρ ΠΏΡΠΈΠ΅ΠΌΠΎΠΌ Π»Π΅ΠΊΠ°ΡΡΡΠ²Π΅Π½Π½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ², ΠΏΡΠΎΡΠ²Π»ΡΡΡΡ ΠΊΠ°ΠΊ ΠΏΠΎΠ±ΠΎΡΠ½ΡΠΉ ΡΡΡΠ΅ΠΊΡ ΠΎΡ ΠΏΡΠΈΠ½ΠΈΠΌΠ°Π΅ΠΌΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ, ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡΠΌΠΈ, Π° Ρ Π΄Π΅ΡΠ΅ΠΉ Π·Π° ΠΏΡΠΎΡΠ²Π»Π΅Π½ΠΈΠ΅ Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΠ³ΠΎ IgA-Π·Π°Π²ΠΈΡΠΈΠΌΠΎΠ³ΠΎ Π±ΡΠ»Π»Π΅Π·Π½ΠΎΠ³ΠΎ Π΄Π΅ΡΠΌΠ°ΡΠΎΠ·Π° Π½Π΅ΡΡΡ ΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎΡΡΡ ΠΊΠ°ΠΊ ΠΏΡΠΈΠΎΠ±ΡΠ΅ΡΠ΅Π½Π½ΡΠΉ Ρ
Π°ΡΠ°ΠΊΡΠ΅Ρ, ΡΠ°ΠΊ ΠΈ Π³Π΅Π½Π΅ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΏΡΠ΅Π΄ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΡΡΡ. ΠΠΈΠ°Π³Π½ΠΎΠ· ΠΌΠΎΠΆΠ΅Ρ Π±ΡΡΡ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ Π³ΠΈΡΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈ ΠΈΠΌΠΌΡΠ½ΠΎΡΠ»ΡΠΎΡΠ΅ΡΡΠ΅Π½ΡΠ½ΡΠΌ Π°Π½Π°Π»ΠΈΠ·ΠΎΠΌ