48 research outputs found
Π Π΅Π°ΠΊΡΠΈΡ Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ² ΠΈ Π°ΠΏΠΎΠΏΡΠΎΠ· Π»ΠΈΠΌΡΠΎΡΠΈΡΠΎΠ² ΠΏΠ΅ΡΠΈΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π²Π΅Π½ΠΎΠ·Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΈ ΠΊΠ°ΠΊ ΠΌΠ°ΡΠΊΠ΅Ρ ΡΠΊΠ°Π½Π΅Π²ΠΎΠΉ ΠΈΡΠ΅ΠΌΠΈΠΈ ΠΏΡΠΈ ΠΎΡΡΡΠΎΠΉ ΠΌΠ°ΡΡΠΈΠ²Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΎΠΏΠΎΡΠ΅ΡΠ΅
Objective: to estimate the level of peripheral venous blood lymphocyte apoptosis and intraoperative hypoxia in victims with acute massive blood loss. Subjects and methods. Twenty-two patients with open and close chest and abdominal traumas complicated by acute massive blood loss were examined. All the patients were emergently operated on to stop bleeding. Tissue metabolism was evaluated from gases, acid-base parameters, and plasma lactate, glucose, potassium, and sodium levels. Apoptosis of mononuclear cells was studied and dead leukocytes were counted using flow cytometry. Results. Preoperatively, the victims were found to have venous hypoxemia, hyperlactatemia, hyperglycemia, moderate leukocytosis, and higher dead leukocyte counts. There were also raised counts of lymphocytes coming into the process of apoptosis. A significant relationship was found between monocyte counts and hypoxia values. At the end of surgery, oxygen balance values became stable and exerted an effect on the count of leukocytes, the relative level of granulocytes, the relative and absolute counts of dead and damaged leukocytes, and the concentration of lymphocytes in the victimsβ venous blood during the early stages of apoptosis, as evidenced by nonlinear regression models. Conclusion. The indicators of immunocompetent cell apoptosis and the count of venous blood dead leukocytes along with lactate levels and venous hypoxemia parameters reflect the degree of tissue hypoxia and may be used as specific markers.Π¦Π΅Π»Ρ ΡΠ°Π±ΠΎΡΡ β ΠΎΡΠ΅Π½ΠΈΡΡ ΡΡΠΎΠ²Π΅Π½Ρ Π°ΠΏΠΎΠΏΡΠΎΠ·Π° Π»ΠΈΠΌΡΠΎΡΠΈΡΠΎΠ² ΠΏΠ΅ΡΠΈΡΠ΅ΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π²Π΅Π½ΠΎΠ·Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΈ ΠΈ ΠΈΠ½ΡΡΠ°ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ Π³ΠΈΠΏΠΎΠΊΡΠΈΠΈ Ρ ΠΏΠΎΡΡΡΠ°Π΄Π°Π²ΡΠΈΡ
Ρ ΠΎΡΡΡΠΎΠΉ ΠΌΠ°ΡΡΠΈΠ²Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΎΠΏΠΎΡΠ΅ΡΠ΅ΠΉ. ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ 22 Π±ΠΎΠ»ΡΠ½ΡΡ
Ρ ΠΎΡΠΊΡΡΡΠΎΠΉ ΠΈ Π·Π°ΠΊΡΡΡΠΎΠΉ ΡΡΠ°Π²ΠΌΠΎΠΉ Π³ΡΡΠ΄ΠΈ ΠΈ ΠΆΠΈΠ²ΠΎΡΠ°, ΠΎΡΠ»ΠΎΠΆΠ½ΠΈΠ²ΡΠ΅ΠΉΡΡ ΠΎΡΡΡΠΎΠΉ ΠΌΠ°ΡΡΠΈΠ²Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΎΠΏΠΎΡΠ΅ΡΠ΅ΠΉ. ΠΡΠ΅ ΠΏΠ°ΡΠΈΠ΅Π½ΡΡ ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Ρ Π² ΡΠΊΡΡΡΠ΅Π½Π½ΠΎΠΌ ΠΏΠΎΡΡΠ΄ΠΊΠ΅ Π΄Π»Ρ ΠΎΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ ΠΊΡΠΎΠ²ΠΎΡΠ΅ΡΠ΅Π½ΠΈΡ. Π’ΠΊΠ°Π½Π΅Π²ΠΎΠΉ ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΠ·ΠΌ ΠΎΡΠ΅Π½ΠΈΠ²Π°Π»ΠΈ ΠΏΠΎ Π³Π°Π·Π°ΠΌ ΠΈ ΠΏΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΡΠΌ ΠΊΠΈΡΠ»ΠΎΡΠ½ΠΎ-ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ, ΡΡΠΎΠ²Π½Ρ Π»Π°ΠΊΡΠ°ΡΠ°, Π³Π»ΠΈΠΊΠ΅ΠΌΠΈΠΈ, ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΊΠ°Π»ΠΈΡ ΠΈ Π½Π°ΡΡΠΈΡ Π² ΠΏΠ»Π°Π·ΠΌΠ΅ ΠΊΡΠΎΠ²ΠΈ. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π°ΠΏΠΎΠΏΡΠΎΠ·Π° ΠΌΠΎΠ½ΠΎΠ½ΡΠΊΠ»Π΅Π°ΡΠΎΠ² ΠΈ ΠΏΠΎΠ΄ΡΡΠ΅Ρ ΠΏΠΎΠ³ΠΈΠ±ΡΠΈΡ
Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ² ΠΊΡΠΎΠ²ΠΈ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠΎΡΠΎΡΠ½ΠΎΠΉ ΡΠΈΡΠΎΠΌΠ΅ΡΡΠΈΠΈ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠΎ Π½Π°ΡΠ°Π»Π° ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ Ρ ΠΏΠΎΡΡΡΠ°Π΄Π°Π²ΡΠΈΡ
ΠΎΡΠΌΠ΅ΡΠ°Π»ΠΈ Π²Π΅Π½ΠΎΠ·Π½ΡΡ Π³ΠΈΠΏΠΎΠΊΡΠ΅ΠΌΠΈΡ, Π³ΠΈΠΏΠ΅ΡΠ»Π°ΠΊΡΠ°ΡΠ΅ΠΌΠΈΡ ΠΈ Π³ΠΈΠΏΠ΅ΡΠ³Π»ΠΈΠΊΠ΅ΠΌΠΈΡ, ΡΠΌΠ΅ΡΠ΅Π½Π½ΡΠΉ Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ·, ΠΏΠΎΠ²ΡΡΠ΅Π½Π½ΠΎΠ΅ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΠΏΠΎΠ³ΠΈΠ±ΡΠΈΡ
Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ². Π’Π°ΠΊΠΆΠ΅ Π±ΡΠ»ΠΎ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΎ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ Π»ΠΈΠΌΡΠΎΡΠΈΡΠΎΠ², Π²ΡΡΡΠΏΠ°ΡΡΠΈΡ
Π² ΠΏΡΠΎΡΠ΅ΡΡ Π°ΠΏΠΎΠΏΡΠΎΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π³ΠΈΠ±Π΅Π»ΠΈ. ΠΡΡΠ²Π»Π΅Π½Π° Π·Π½Π°ΡΠΈΠΌΠ°Ρ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΌΠΎΠ½ΠΎΡΠΈΡΠΎΠ² ΠΎΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ Π³ΠΈΠΏΠΎΠΊΡΠΈΠΈ. ΠΠ° ΠΌΠΎΠΌΠ΅Π½Ρ ΠΎΠΊΠΎΠ½ΡΠ°Π½ΠΈΡ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΊΠΈΡΠ»ΠΎΡΠΎΠ΄Π½ΠΎΠ³ΠΎ Π±Π°Π»Π°Π½ΡΠ° ΡΡΠ°Π±ΠΈΠ»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ ΠΈ ΠΎΠΊΠ°Π·ΡΠ²Π°Π»ΠΈ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ², ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ Π³ΡΠ°Π½ΡΠ»ΠΎΡΠΈΡΠΎΠ², ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΠΎΠ΅ ΠΈ Π°Π±ΡΠΎΠ»ΡΡΠ½ΠΎΠ΅ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΠΏΠΎΠ³ΠΈΠ±ΡΠΈΡ
ΠΈ ΠΏΠΎΠ²ΡΠ΅ΠΆΠ΄Π΅Π½Π½ΡΡ
Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ², ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ Π»ΠΈΠΌΡΠΎΡΠΈΡΠΎΠ² Π½Π° ΡΠ°Π½Π½ΠΈΡ
ΡΡΠ°Π΄ΠΈΡΡ
Π°ΠΏΠΎΠΏΡΠΎΠ·Π° Π² Π²Π΅Π½ΠΎΠ·Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΈ ΠΏΠΎΡΡΡΠ°Π΄Π°Π²ΡΠΈΡ
, ΡΡΠΎ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π°Π»ΠΎΡΡ Π½Π΅Π»ΠΈΠ½Π΅ΠΉΠ½ΡΠΌΠΈ ΡΠ΅Π³ΡΠ΅ΡΡΠΈΠΎΠ½Π½ΡΠΌΠΈ ΠΌΠΎΠ΄Π΅Π»ΡΠΌΠΈ. ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. ΠΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ Π°ΠΏΠΎΠΏΡΠΎΠ·Π° ΠΈΠΌ-ΠΌΡΠ½ΠΎΠΊΠΎΠΌΠΏΠ΅ΡΠ΅Π½ΡΠ½ΡΡ
ΠΊΠ»Π΅ΡΠΎΠΊ ΠΈ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΠΏΠΎΠ³ΠΈΠ±ΡΠΈΡ
Π»Π΅ΠΉΠΊΠΎΡΠΈΡΠΎΠ² Π²Π΅Π½ΠΎΠ·Π½ΠΎΠΉ ΠΊΡΠΎΠ²ΠΈ Π½Π°ΡΠ°Π²Π½Π΅ Ρ ΡΡΠΎΠ²Π½Π΅ΠΌ Π»Π°ΠΊΡΠ°ΡΠ° ΠΈ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ°ΠΌΠΈ Π²Π΅Π½ΠΎΠ·Π½ΠΎΠΉ Π³ΠΈΠΏΠΎΠΊΡΠ΅ΠΌΠΈΠΈ ΠΎΡΡΠ°ΠΆΠ°ΡΡ ΡΡΠ΅ΠΏΠ΅Π½Ρ ΡΠΊΠ°Π½Π΅Π²ΠΎΠΉ Π³ΠΈΠΏΠΎΠΊΡΠΈΠΈ ΠΈ ΠΌΠΎΠ³ΡΡ Π±ΡΡΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½Ρ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ°ΡΠΊΠ΅ΡΠΎΠ². ΠΠ»ΡΡΠ΅Π²ΡΠ΅ ΡΠ»ΠΎΠ²Π°: ΠΎΡΡΡΠ°Ρ ΠΌΠ°ΡΡΠΈΠ²Π½Π°Ρ ΠΊΡΠΎΠ²ΠΎΠΏΠΎΡΠ΅ΡΡ, Π³ΠΈΠΏΠΎΠΊΡΠ΅ΠΌΠΈΡ, Π°ΠΏΠΎΠΏΡΠΎΠ· Π»ΠΈΠΌΡΠΎΡΠΈΡΠΎΠ², ΠΏΠΎΠ³ΠΈΠ±ΡΠΈΠ΅ Π»Π΅ΠΉΠΊΠΎΡΠΈΡΡ
IMMUNOLOGICAL TOLERANCE IN ORGAN TRANSPLANTATION
Modeling ofΒ immune tolerance willΒ eliminate theΒ needΒ forΒ taking medications to prevent rejection. ThisΒ review of available literature covers the immune mechanisms of allograft rejection and the ways of tolerance induction. The role of mesenchymal stemΒ cells and using them for tolerance development have been discussed. The authors also draw attention to the factΒ thatΒ blood transfusion from an organ donorΒ leads to a decreasedΒ intensity of the immune response to donor cells in transplantation
ΠΠ»ΠΈΡΠ½ΠΈΠ΅ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ΅Π½ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΈΡΠ°Π½ΠΈΡ Π½Π° ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΎΡΠ΅ΡΡΡ Π² ΡΠ°Π½Π½Π΅ΠΌ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΌ ΠΏΠ΅ΡΠΈΠΎΠ΄Π΅ Ρ ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ Π±ΠΎΠ»ΡΠ½ΡΡ
Objective: to estimate blood glucose levels during complete parenteral nutrition (CPN), by using the three-in-one system with a high glucose level. Subjects and methods. Thirty adult patients without diabetes mellitus (including 18 men) were examined. Twelve and 18 patients were operated on for colonic and gastric cancers, respectively. CPN (Oliclinomel No. 7 β 1000, 1500 ml; glucose, 240 g in 1500 ml, Baxter, Belgium) was carried out at the Surgery Department in the early postoperative period (3-5 postoperative days) with stable hemodynamics and no organ dysfunction (acute respiratory, renal, hepatic failure). The preparation was administered at a rate of about 83 ml/h over 18 hours. Insulin was not used. Serum glucose concentrations were measured before the study and then for 24 hours at an interval of 6 hours. Results. Glucose concentrations were not found to exceed the allowable values in the majority of patients during CPN at the given rate. In 5 (16.7%) patients, short-term glucose increases up to 13.3 mmol/l were corrected, by decreasing the infusion rate. There was no hypoglycemia or other complications during CPN. Conclusion. Our findings suggest that three-in-one parenteral feeding is safe and causes no metabolic disturbances if simple principles are followed, the basic ones of which are to observe the intake of an adequate total dose and the rate of administration of nutrients. Key words: parenteral feeding, hyperglycemia, metabolic disturbances.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΎΡΠ΅Π½ΠΈΡΡ ΡΡΠΎΠ²Π΅Π½Ρ Π³Π»ΠΈΠΊΠ΅ΠΌΠΈΠΈ Π½Π° ΡΠΎΠ½Π΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΠ°ΡΠ΅Π½ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΈΡΠ°Π½ΠΈΡ (ΠΠΠ) Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΠΈΡΡΠ΅ΠΌΡ Β«ΡΡΠΈ Π² ΠΎΠ΄Π½ΠΎΠΌΒ» Ρ Π²ΡΡΠΎΠΊΠΈΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π³Π»ΡΠΊΠΎΠ·Ρ. ΠΠ°ΡΠ΅ΡΠΈΠ°Π» ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΎ 30 Π²Π·ΡΠΎΡΠ»ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ², Π½Π΅ ΡΡΡΠ°Π΄Π°Π²ΡΠΈΡ
ΡΠ°Ρ
Π°ΡΠ½ΡΠΌ Π΄ΠΈΠ°Π±Π΅ΡΠΎΠΌ (Π² Ρ. Ρ. 18 ΠΌΡΠΆΡΠΈΠ½). ΠΠΎ ΠΏΠΎΠ²ΠΎΠ΄Ρ ΡΠ°ΠΊΠ° ΡΠΎΠ»ΡΡΠΎΠΉ ΠΊΠΈΡΠΊΠΈ Π±ΡΠ»ΠΈ ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Ρ 12, ΠΏΠΎ ΠΏΠΎΠ²ΠΎΠ΄Ρ ΡΠ°ΠΊΠ° ΠΆΠ΅Π»ΡΠ΄ΠΊΠ° β 18 Π±ΠΎΠ»ΡΠ½ΡΡ
. ΠΠΠ (ΠΠ»ΠΈΠΊΠ»ΠΈΠ½ΠΎΠΌΠ΅Π»Ρ β7 β 1000, 1500 ΠΌΠ», Π³Π»ΡΠΊΠΎΠ·Π°: 240 Π³ Π² 1500 ΠΌΠ», Β«ΠΠ°ΠΊΡΡΠ΅ΡΒ», ΠΠ΅Π»ΡΠ³ΠΈΡ) ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΎΡΡ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΎΡΠ΄Π΅Π»Π΅Π½ΠΈΡ Π² ΡΠ°Π½Π½Π΅ΠΌ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΌ ΠΏΠ΅ΡΠΈΠΎΠ΄Π΅ (3β5 ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΠ΅ ΡΡΡΠΊΠΈ) ΠΏΡΠΈ ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΠΉ Π³Π΅ΠΌΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ΅, ΠΎΡΡΡΡΡΡΠ²ΠΈΠΈ ΠΎΡΠ³Π°Π½Π½ΠΎΠΉ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΡΡΠΈ (ΠΎΡΡΡΠ°Ρ Π΄ΡΡ
Π°ΡΠ΅Π»ΡΠ½Π°Ρ, ΠΏΠΎΡΠ΅ΡΠ½Π°Ρ, ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ½Π°Ρ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎΡΡΡ). ΠΡΠ΅ΠΏΠ°ΡΠ°Ρ Π²Π²ΠΎΠ΄ΠΈΠ»ΡΡ ΡΠΎ ΡΠΊΠΎΡΠΎΡΡΡΡ ΠΎΠΊΠΎΠ»ΠΎ 83 ΠΌΠ»/Ρ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ 18 ΡΠ°ΡΠΎΠ². ΠΠ½ΡΡΠ»ΠΈΠ½ Π½Π΅ ΠΏΡΠΈΠΌΠ΅Π½ΡΠ»ΡΡ. ΠΠΎ Π½Π°ΡΠ°Π»Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ Π΄Π°Π»Π΅Π΅ Π² ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ ΡΡΡΠΎΠΊ Ρ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»ΠΎΠΌ Π² 6 ΡΠ°ΡΠΎΠ² ΠΎΡΠ΅Π½ΠΈΠ²Π°Π»Π°ΡΡ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ Π³Π»ΡΠΊΠΎΠ·Ρ Π² ΡΡΠ²ΠΎΡΠΎΡΠΊΠ΅ ΠΊΡΠΎΠ²ΠΈ. Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΠΠΠ Ρ ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Π½ΠΎΠΉ ΡΠΊΠΎΡΠΎΡΡΡΡ Ρ Π±ΠΎΠ»ΡΡΠΈΠ½ΡΡΠ²Π° Π±ΠΎΠ»ΡΠ½ΡΡ
ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡ Π³Π»ΡΠΊΠΎΠ·Ρ Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π»Π° Π΄ΠΎΠΏΡΡΡΠΈΠΌΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ. ΠΡΠ°ΡΠΊΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠ΅ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΠ΅ Π³Π»ΡΠΊΠΎΠ·Ρ Π΄ΠΎ 13,3 ΠΌΠΌΠΎΠ»Ρ/Π» Ρ 5-ΠΈ Π±ΠΎΠ»ΡΠ½ΡΡ
(16,7%) ΠΊΠΎΡΡΠΈΠ³ΠΈΡΠΎΠ²Π°Π»ΠΎΡΡ ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠ΅ΠΌ ΡΠΊΠΎΡΠΎΡΡΠΈ ΠΈΠ½ΡΡΠ·ΠΈΠΈ. ΠΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΠΠΠ Π³ΠΈΠΏΠΎΠ³Π»ΠΈΠΊΠ΅ΠΌΠΈΠΈ ΠΈ Π΄ΡΡΠ³ΠΈΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ Π½Π΅ ΠΎΡΠΌΠ΅ΡΠ΅Π½ΠΎ. ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ Π½Π°ΠΌΠΈ Π΄Π°Π½Π½ΡΠ΅ ΡΠ²ΠΈΠ΄Π΅ΡΠ΅Π»ΡΡΡΠ²ΡΡΡ ΠΎ ΡΠΎΠΌ, ΡΡΠΎ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠ΅ ΠΏΠ°ΡΠ΅Π½ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΈΡΠ°Π½ΠΈΡ Β«ΡΡΠΈ Π² ΠΎΠ΄Π½ΠΎΠΌΒ» ΡΠ²Π»ΡΠ΅ΡΡΡ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΡΠΌ ΠΈ Π½Π΅ Π²ΡΠ·ΡΠ²Π°Π΅Ρ ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΡΠ΅ΡΠΊΠΈΡ
Π½Π°ΡΡΡΠ΅Π½ΠΈΠΉ ΠΏΡΠΈ ΡΠΎΠ±Π»ΡΠ΄Π΅Π½ΠΈΠΈ ΠΏΡΠΎΡΡΡΡ
ΠΏΡΠΈΠ½ΡΠΈΠΏΠΎΠ², ΠΎΡΠ½ΠΎΠ²Π½ΡΠΌΠΈ ΠΈΠ· ΠΊΠΎΡΠΎΡΡΡ
ΡΠ²Π»ΡΡΡΡΡ ΡΠΎΠ±Π»ΡΠ΄Π΅Π½ΠΈΠ΅ Π°Π΄Π΅ΠΊΠ²Π°ΡΠ½ΠΎΠΉ ΠΎΠ±ΡΠ΅ΠΉ Π΄ΠΎΠ·Ρ ΠΈ ΡΠΊΠΎΡΠΎΡΡΠΈ Π²Π²Π΅Π΄Π΅Π½ΠΈΡ Π½ΡΡΡΠΈΠ΅Π½ΡΠΎΠ². ΠΠ»ΡΡΠ΅Π²ΡΠ΅ ΡΠ»ΠΎΠ²Π°: ΠΏΠ°ΡΠ΅Π½ΡΠ΅ΡΠ°Π»ΡΠ½ΠΎΠ΅ ΠΏΠΈΡΠ°Π½ΠΈΠ΅, Π³ΠΈΠΏΠ΅ΡΠ³Π»ΠΈΠΊΠ΅ΠΌΠΈΡ, ΠΌΠ΅ΡΠ°Π±ΠΎΠ»ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π½Π°ΡΡΡΠ΅Π½ΠΈΡ
Two-dimensional vector solitons stabilized by a linear or nonlinear lattice acting in one component
The subject of the work is the stabilization of two-dimensional (2D) two-component (vector) solitons, in media with the attractive cubic nonlinearity, against the collapse by a linear lattice (LL, which is induced by a periodic modulation of the refractive index in optics, or created as an optical lattice in BEC), or by a nonlinear lattice (NL, induced by a periodic modulation of the nonlinearity coefficient). We demonstrate that, due to the XPM (cross-phase-modulation) coupling between the components, the LL or NL acting on a single component is sufficient for the stabilization of vector solitons, that include a component for which the self-focusing medium is uniform. In the case of the LL, the vector solitons are stable almost in their entire existence domain, while the NL can only stabilize the solitons in which the component affected by the lattice carries a norm which is comparable to, or larger than the norm of the component in the uniform medium