684 research outputs found
ΠΠΠΠΠΠ ΠΠΠΠΠΠΠΠΠ― Π ΠΠΠΠΠΠΠΠΠ‘Π’Π ΠΠΠΠ€Π ΠΠΠΠ« Π£ ΠΠΠ ΠΠ‘ΠΠ«Π₯ Π‘ ΠΠΠ ΠΠΠΠ¬ΠΠΠ Π€Π£ΠΠΠ¦ΠΠΠ ΠΠΠΠΠΠ₯ ΠΠ Π ΠΠΠ‘ΠΠ ΠΠΠ ΠΠΠΠ₯ΠΠ Π£Π ΠΠΠ§ΠΠ‘ΠΠΠ₯ ΠΠΠΠ ΠΠ¦ΠΠ
A statisticalΒ analysis of position and mobility of the diaphragmΒ in adults with normal lung function is not operated and underwent various cardiac interventions. The study included 2441 the patient,Β divided into groups non-operated and undergoingΒ various cardiac surgical intervention.Β Were determinedΒ the mean values of the position and mobility of the diaphragm,Β the frequency of elevation and diaphragm dysfunction. Using ROC analysis establishedΒ the degree of influence for the elevation and dysfunction of the diaphragm of the body mass index (BMI), the coefficient of mobility of the diaphragmΒ (CMD)Β and indicatorsΒ of the position of the domes of the diaphragm.Β It is revealed that after cardiac operationsΒ the position of the domes of the diaphragm was higher and decreasedΒ mobility of the diaphragm. Elevation and dysfunction among non-operated diaphragm was noted in a few cases, and after cardiac surgery significantly more often. Non-operated patientsΒ have a statisticallyΒ significant impact on elevation of the right dome had a value of (AUC 0,99) and the elevation of the left dome of the diaphragm the magnitudeΒ of BMI (AUC of 0,89). They have not identified effects on diaphragmaticΒ dysfunction none of the studied factors. In postoperativeΒ patients, the rates of mobility of the diaphragm showed a good effect on the elevation (AUC of 0,84β0,86), while the value of BMI showed an average quality of effects in all models (AUC of 0,62 to 0,65). A statistically significant effect on diaphragm matic dysfunction provided only the position of the domes of the diaphragm (AUC 0,78β0,83). Patients undergoing different cardiac surgical intervention have a statistically significant decrease of mobility and increase the position of the diaphragm,Β increasing the frequency of elevation and dysfunction. From non-operated patientsΒ on the mobility of the diaphragm did not affect any height standingΒ domes of the diaphragm or BMI. On the position of the right dome affects only the rate of mobility of the diaphragm, and the left dome β the value of BMI. Patients after various cardiac surgeriesΒ greaterΒ impact on the elevation of the diaphragm provided an indicator of its mobility, than BMI and dysfunction of the diaphragm affects only its position.ΠΡΠΎΠ²Π΅Π΄Π΅Π½ ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ ΠΈ ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ Ρ Π²Π·ΡΠΎΡΠ»ΡΡ
Ρ Π½ΠΎΡΠΌΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΠ½ΠΊΡΠΈΠ΅ΠΉ Π»Π΅Π³ΠΊΠΈΡ
, Π³ΠΎΡΠΎΠ²ΡΡΠΈΡ
ΡΡ ΠΊ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΡΠΌ ΠΈ ΠΏΠΎΡΠ»Π΅ ΡΠ°Π·Π»ΠΈΡΠ½ΡΡ
ΠΊΠ°ΡΠ΄ΠΈΠΎΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
Π²ΠΌΠ΅ΡΠ°ΡΠ΅Π»ΡΡΡΠ². Π ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΠΊΠ»ΡΡΠ΅Π½ 2441 ΠΏΠ°ΡΠΈΠ΅Π½Ρ, Π²ΡΠ΄Π΅Π»Π΅Π½Ρ Π³ΡΡΠΏΠΏΡ Π½Π΅ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΈ ΠΏΠ΅ΡΠ΅Π½Π΅ΡΡΠΈΡ
ΡΠ°Π·Π»ΠΈΡΠ½ΡΠ΅ ΠΊΠ°ΡΠ΄ΠΈΠΎΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π²ΠΌΠ΅ΡΠ°ΡΠ΅Π»ΡΡΡΠ²Π°. ΠΠΏΡΠ΅Π΄Π΅Π»ΡΠ»ΠΈΒ ΡΡΠ΅Π΄Π½ΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈΒ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ ΠΈ ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ, ΡΠ°ΡΡΠΎΡΡ ΡΠ»Π΅Π²Π°ΡΠΈΠΈ ΠΈ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ. Π‘ ΠΏΠΎΠΌΠΎΡΡΡ ROC-Π°Π½Π°Π»ΠΈΠ·Π° ΡΡΡΠ°Π½Π°Π²Π»ΠΈΠ²Π°Π»ΠΈΒ ΡΡΠ΅ΠΏΠ΅Π½Ρ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π»ΠΈΡΠ½ΠΈΡ Π½Π° ΡΠ»Π΅Π²Π°ΡΠΈΡΒ ΠΈ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ ΠΈΠ½Π΄Π΅ΠΊΡΠ° ΠΌΠ°ΡΡΡ ΡΠ΅Π»Π° (ΠΠΠ’), ΠΊΠΎΡΡΡΠΈΡΠΈΠ΅Π½ΡΠ° ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ (ΠΠΠ) ΠΈ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ ΠΊΡΠΏΠΎΠ»ΠΎΠ² Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ. ΠΡΡΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΠΏΠΎΡΠ»Π΅ ΠΊΠ°ΡΠ΄ΠΈΠΎΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΉ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΊΡΠΏΠΎΠ»ΠΎΠ² Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ Π±ΡΠ»ΠΎ Π²ΡΡΠ΅, ΡΠ½ΠΈΠΆΠ°Π»Π°ΡΡ ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ. ΠΠ»Π΅Π²Π°ΡΠΈΡ ΠΈ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ ΡΡΠ΅Π΄ΠΈ Π½Π΅ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΎΡΠΌΠ΅ΡΠ°Π»ΠΈΡΡ Π² Π΅Π΄ΠΈΠ½ΠΈΡΠ½ΡΡ
ΡΠ»ΡΡΠ°ΡΡ
, Π° ΠΏΠΎΡΠ»Π΅ ΠΊΠ°ΡΠ΄ΠΈΠΎΡ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΉ Π² ΡΠ°Π·Ρ ΡΠ°ΡΠ΅. Π£ Π½Π΅ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΡΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈ Π·Π½Π°ΡΠΈΠΌΠΎΠ΅ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° ΡΠ»Π΅Π²Π°ΡΠΈΡ ΠΏΡΠ°Π²ΠΎΠ³ΠΎ ΠΊΡΠΏΠΎΠ»Π° ΠΎΠΊΠ°Π·ΡΠ²Π°Π» Π»ΠΈΡΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΠΠΠ (AUC 0,99), Π° Π½Π° ΡΠ»Π΅Π²Π°ΡΠΈΡ Π»Π΅Π²ΠΎΠ³ΠΎ ΠΊΡΠΏΠΎΠ»Π° Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ β Π²Π΅Π»ΠΈΡΠΈΠ½Π° ΠΠΠ’ (AUC 0,89). Π£ Π½ΠΈΡ
Π½Π΅ Π²ΡΡΠ²Π»Π΅Π½ΠΎΒ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎΒ Π²Π»ΠΈΡΠ½ΠΈΡΒ Π½Π°Β Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΠ°Π»ΡΠ½ΡΡΒ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΡ Π½ΠΈΒ ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΈΠ·Β ΠΈΠ·ΡΡΠ°Π΅ΠΌΡΡ
Β ΡΠ°ΠΊΡΠΎΡΠΎΠ². Π£ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»ΠΈ ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°Π»ΠΈ Ρ
ΠΎΡΠΎΡΠΈΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²Π»ΠΈΡΠ½ΠΈΡ Π½Π° ΡΠ»Π΅Π²Π°ΡΠΈΡΒ (AUC 0,84β0,86), Π² ΡΠΎ Π²ΡΠ΅ΠΌΡΒ ΠΊΠ°ΠΊ Π²Π΅Π»ΠΈΡΠΈΠ½Π° ΠΠΠ’Β ΠΏΠΎΠΊΠ°Π·Π°Π»Π°Β ΡΡΠ΅Π΄Π½Π΅Π΅ ΠΊΠ°ΡΠ΅ΡΡΠ²ΠΎ Π²Π»ΠΈΡΠ½ΠΈΡ Π²ΠΎ Π²ΡΠ΅Ρ
ΠΌΠΎΠ΄Π΅Π»ΡΡ
(AUC 0,62β0,65). Π‘ΡΠ°ΡΠΈΡΡΠΈΡΠ΅ΡΠΊΠΈ Π·Π½Π°ΡΠΈΠΌΠΎΠ΅ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΠ°Π»ΡΠ½ΡΡ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΡ ΠΎΠΊΠ°Π·ΡΠ²Π°Π»ΠΎ ΡΠΎΠ»ΡΠΊΠΎ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΠ΅ ΠΊΡΠΏΠΎΠ»ΠΎΠ² Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ (AUC 0,78β0,83). Π£ ΠΏΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² ΡΠΌΠ΅Π½ΡΡΠ΅Π½ΠΈΠ΅ ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΠΈ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ ΠΌΠ΅Π½Π΅Π΅ 8β8,9 Ρ. Π΅. Ρ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΡΡ ΠΈ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ½ΠΎΡΡΡΡ ΠΏΡΠΎΠ³Π½ΠΎΠ·ΠΈΡΠΎΠ²Π°Π»ΠΎ Π΅Π΅ ΡΠ»Π΅Π²Π°ΡΠΈΡ. Π£Π²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΠΠΠ’ Π±ΠΎΠ»Π΅Π΅ 28β28,6 ΠΊΠ³/ΠΌ2Β ΠΈΠΌΠ΅Π»ΠΎ ΡΡΠ΅Π΄Π½Π΅Π΅ ΠΏΡΠΎΠ³Π½ΠΎΡΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° ΡΠ»Π΅Π²Π°ΡΠΈΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ, ΠΏΡΠΈ Π²ΡΡΠΎΠΊΠΎΠΉ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΈ ΠΌΠ°Π»ΠΎΠΉ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ½ΠΎΡΡΠΈ. ΠΠΎΡΠ»Π΅ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡΒ Π΄ΠΈΡΡΡΠ½ΠΊΡΠΈΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ ΠΌΠΎΠΆΠ½ΠΎ ΠΏΡΠ΅Π΄ΡΠΊΠ°Π·Π°ΡΡΒ ΡΠΎΠ»ΡΠΊΠΎ ΠΏΠΎ Π΅Π΅ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ: Ρ
ΠΎΡΠΎΡΠΈΠΉ Π±Π°Π»Π°Π½Ρ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΈ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΠ³Π½ΠΎΠ·Π° ΠΎΡΠΌΠ΅ΡΠ°Π»ΡΡ ΠΏΡΠΈ ΠΏΠΎΠ΄ΡΠ΅ΠΌΠ΅ ΠΊΡΠΏΠΎΠ»ΠΎΠ² Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ Π²ΡΡΠ΅ ΠΌΠ΅ΠΆΠΏΠΎΠ·Π²ΠΎΠ½ΠΊΠΎΠ²ΠΎΠ³ΠΎ Π΄ΠΈΡΠΊΠ° VIIβIX Π³ΡΡΠ΄Π½ΡΡ
ΠΏΠΎΠ·Π²ΠΎΠ½ΠΊΠΎΠ². Π£ Π½Π΅ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ² Π½Π° ΠΏΠΎΠ΄Π²ΠΈΠΆΠ½ΠΎΡΡΡ Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ Π½Π΅ Π²Π»ΠΈΡΠ»ΠΈ Π½ΠΈ Π²ΡΡΠΎΡΠ° ΡΡΠΎΡΠ½ΠΈΡ ΠΊΡΠΏΠΎΠ»ΠΎΠ² Π΄ΠΈΠ°ΡΡΠ°Π³ΠΌΡ, Π½ΠΈ ΠΠΠ’
ΠΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΎΠ΅ Π½Π°Π±Π»ΡΠ΄Π΅Π½ΠΈΠ΅ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ° Ρ Π³ΠΈΠ³Π°Π½ΡΡΠΊΠΎΠΉ Π°Π½Π΅Π²ΡΠΈΠ·ΠΌΠΎΠΉ Π»Π΅Π²ΠΎΠΉ ΠΊΠΎΡΠΎΠ½Π°ΡΠ½ΠΎΠΉ Π°ΡΡΠ΅ΡΠΈΠΈ
Background. Giant coronary artery aneurysms are extremely rare findings. According to foreign authors, their prevalence as a result of autopsy ranged from 0.02 to 0.2%. Most often, they do not have specific symptoms and are detected after the development of complications, such as acute coronary syndrome, myocardial infarction. The risk of sudden complications causes an unfavorable prognosis of the disease and requires immediate surgical correction.Aim: to demonstrate the effectiveness of radiology methods in assessing coronary anatomy and the possibility of visualization before planning surgery.Materials and methods. The patient was referred to the Federal State Budgetary Institution βFCCVSβ of the Ministry of Health of Russia (Penza) for additional examination and surgical treatment. Before surgery, to clarify the features of the macromorphology of the aneurysm, selective coronary angiography and CT coronary angiography were performed.Results. Before surgery, according to CT coronary angiography, a partially thrombosed fusiform aneurysm was detected in the anterior descending artery with a maximum size of 7.0 x 3.5 cm, adjacent to the pulmonary artery trunk and left atrial appendage.Conclusion. In modern conditions, the methods of radiology are successfully used to clarify the localization of aneurysms and individual topographic and anatomical features of the coronary arteries.ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ: Π³ΠΈΠ³Π°Π½ΡΡΠΊΠΈΠ΅ Π°Π½Π΅Π²ΡΠΈΠ·ΠΌΡ ΠΊΠΎΡΠΎΠ½Π°ΡΠ½ΡΡ
Π°ΡΡΠ΅ΡΠΈΠΉ ΡΠ²Π»ΡΡΡΡΡ ΡΡΠ΅Π·Π²ΡΡΠ°ΠΉΠ½ΠΎ ΡΠ΅Π΄ΠΊΠΈΠΌΠΈ Π½Π°Ρ
ΠΎΠ΄ΠΊΠ°ΠΌΠΈ. ΠΠΎ Π΄Π°Π½Π½ΡΠΌ Π·Π°ΡΡΠ±Π΅ΠΆΠ½ΡΡ
Π°Π²ΡΠΎΡΠΎΠ², ΠΈΡ
ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΠΎΡΡΡ Π² ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΎΠ°Π½Π°ΡΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΡΠΎΡΡΠ°Π²ΠΈΠ»Π° ΠΎΡ 0,02 Π΄ΠΎ 0,2%. Π§Π°ΡΠ΅ Π²ΡΠ΅Π³ΠΎ ΠΎΠ½ΠΈ Π½Π΅ ΠΈΠΌΠ΅ΡΡ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΈΠΌΠΏΡΠΎΠΌΠΎΠ² ΠΈ ΠΎΠ±Π½Π°ΡΡΠΆΠΈΠ²Π°ΡΡΡΡ ΠΏΠΎΡΠ»Π΅ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ, ΡΠ°ΠΊΠΈΡ
ΠΊΠ°ΠΊ ΠΎΡΡΡΡΠΉ ΠΊΠΎΡΠΎΠ½Π°ΡΠ½ΡΠΉ ΡΠΈΠ½Π΄ΡΠΎΠΌ, ΠΈΠ½ΡΠ°ΡΠΊΡ ΠΌΠΈΠΎΠΊΠ°ΡΠ΄Π°. Π ΠΈΡΠΊ Π²Π½Π΅Π·Π°ΠΏΠ½ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ ΠΎΠ±ΡΡΠ»ΠΎΠ²Π»ΠΈΠ²Π°Π΅Ρ Π½Π΅Π±Π»Π°Π³ΠΎΠΏΡΠΈΡΡΠ½ΡΠΉ ΠΏΡΠΎΠ³Π½ΠΎΠ· Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΡ ΠΈ ΡΡΠ΅Π±ΡΠ΅Ρ Π½Π΅ΠΌΠ΅Π΄Π»Π΅Π½Π½ΠΎΠΉ Ρ
ΠΈΡΡΡΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΊΠΎΡΡΠ΅ΠΊΡΠΈΠΈ.Π¦Π΅Π»Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ: ΠΏΡΠΎΠ΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΠΎΠ²Π°ΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π»ΡΡΠ΅Π²ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ Π² ΠΎΡΠ΅Π½ΠΊΠ΅ ΠΊΠΎΡΠΎΠ½Π°ΡΠ½ΠΎΠΉ Π°Π½Π°ΡΠΎΠΌΠΈΠΈ ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΠΈ Π½Π°Π³Π»ΡΠ΄Π½ΠΎΠΉ Π²ΠΈΠ·ΡΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΏΠ΅ΡΠ΅Π΄ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π²ΠΌΠ΅ΡΠ°ΡΠ΅Π»ΡΡΡΠ²Π°.ΠΠ°ΡΠ΅ΡΠΈΠ°Π» ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. ΠΠ°ΡΠΈΠ΅Π½Ρ Π±ΡΠ» Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ Π² Π€ΠΠΠ£ βΠ€Π¦Π‘Π‘Π₯β ΠΠΈΠ½Π·Π΄ΡΠ°Π²Π° Π ΠΎΡΡΠΈΠΈ (ΠΠ΅Π½Π·Π°) Π΄Π»Ρ Π΄ΠΎΠΎΠ±ΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π»Π΅ΡΠ΅Π½ΠΈΡ. ΠΠΎ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ Π΄Π»Ρ ΡΡΠΎΡΠ½Π΅Π½ΠΈΡ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠ΅ΠΉ ΠΌΠ°ΠΊΡΠΎΠΌΠΎΡΡΠΎΠ»ΠΎΠ³ΠΈΠΈ Π°Π½Π΅Π²ΡΠΈΠ·ΠΌΡ Π±ΡΠ»Π° Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π° ΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½Π°Ρ ΠΊΠΎΡΠΎΠ½Π°ΡΠΎΠ°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΡ ΠΈ ΠΠ’-ΠΊΠΎΡΠΎΠ½Π°ΡΠΎΠ³ΡΠ°ΡΠΈΡ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠΎ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΠΏΠΎ Π΄Π°Π½Π½ΡΠΌ ΠΠ’-ΠΊΠΎΡΠΎΠ½Π°ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΠ΅ΡΡΡ ΡΠ°ΡΡΠΈΡΠ½ΠΎ ΡΡΠΎΠΌΠ±ΠΈΡΠΎΠ²Π°Π½Π½Π°Ρ Π²Π΅ΡΠ΅ΡΠ΅Π½ΠΎΠΎΠ±ΡΠ°Π·Π½Π°Ρ Π°Π½Π΅Π²ΡΠΈΠ·ΠΌΠ° Π² ΠΏΠ΅ΡΠ΅Π΄Π½Π΅ΠΉ Π½ΠΈΡΡ
ΠΎΠ΄ΡΡΠ΅ΠΉ Π°ΡΡΠ΅ΡΠΈΠΈ Ρ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΌ ΡΠ°Π·ΠΌΠ΅ΡΠΎΠΌ 7,0 Γ 3,5 ΡΠΌ, ΠΏΡΠΈΠ»Π΅ΠΆΠ°ΡΠ°Ρ ΠΊ ΡΡΠ²ΠΎΠ»Ρ Π»Π΅Π³ΠΎΡΠ½ΠΎΠΉ Π°ΡΡΠ΅ΡΠΈΠΈ ΠΈ ΡΡΠΊΡ Π»Π΅Π²ΠΎΠ³ΠΎ ΠΏΡΠ΅Π΄ΡΠ΅ΡΠ΄ΠΈΡ.ΠΠ°ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅. Π ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΌΠ΅ΡΠΎΠ΄Ρ Π»ΡΡΠ΅Π²ΠΎΠΉ Π΄ΠΈΠ°Π³Π½ΠΎΡΡΠΈΠΊΠΈ ΡΡΠΏΠ΅ΡΠ½ΠΎ ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡΡΡ Π΄Π»Ρ ΡΡΠΎΡΠ½Π΅Π½ΠΈΡ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ Π°Π½Π΅Π²ΡΠΈΠ·ΠΌ ΠΈ ΠΈΠ½Π΄ΠΈΠ²ΠΈΠ΄ΡΠ°Π»ΡΠ½ΡΡ
ΡΠΎΠΏΠΎΠ³ΡΠ°ΡΠΎΠ°Π½Π°ΡΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΡΡ
ΠΊΠΎΡΠΎΠ½Π°ΡΠ½ΡΡ
Π°ΡΡΠ΅ΡΠΈΠΉ
Two-stage evolution of mantle peridotites from the Stalemate Fracture Zone, northwestern Pacific
This paper reports the results of a mineralogical study of 14 mantle peridotite samples dredged in 2009 from the eastern slope of the northwestern segment of the Stalemate Ridge in the northwestern Pacific during cruise SO201-KALMAR Leg 1b of the R/V Sonne. The sample collection included four serpentinized and silicified dunites and ten variably serpentinized lherzolites. The compositions of primary minerals (clinopyroxene, orthopyroxene, and spinel) change systematically from the lherzolites to dunites. Spinel from the lherzolites shows higher Mg# and lower Cr# values (0.65-0.68 and 0.26-0.33, respectively) compared with spinel from the dunites (Mg# = 0.56-0.64 and Cr# = 0.38-0.43). Clinopyroxene from the lherzolites is less magnesian (Mg# = 91.7-92.4) than clinopyroxene from dunite sample DR37-3 (Mg# = 93.7). Based on the obtained data, it was concluded that the lherzolites of the Stalemate Fracture Zone were derived by 10-12% near-fractional melting of a DMM-type depleted mantle reservoir beneath the Kula-Pacific spreading center. The dunites were produced by interaction of residual lherzolites with sodium- and titaniumrich melt and are probably fragments of a network of dunite channels in the shallow mantle. The moderately depleted composition of minerals clearly distinguishes the lherzolites from the strongly depleted peridotites of the East Pacific Rise and indicates the existence of slow-spreading mid-ocean ridges in the Pacific Ocean during the Cretaceous-Paleogene
ΠΠΏΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ Π³ΠΎΠ»ΠΎΠ²Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ·Π³Π°, ΡΠ΅ΡΠ΄ΡΠ° ΠΈ Π½ΠΈΠΆΠ½Π΅ΠΉ ΡΠ°ΡΡΠΈ ΡΠ΅Π»Π° ΠΏΡΠΈ ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ Π΄ΡΠ³ΠΈ Π°ΠΎΡΡΡ Ρ Π΄Π΅ΡΠ΅ΠΉ ΡΠ°Π½Π½Π΅Π³ΠΎ Π²ΠΎΠ·ΡΠ°ΡΡΠ°
Relevance. The choice of perfusion strategy is vital for the protection of internal organs during surgery. In several studies of recent years, as well as by us, a strategy of sustained total all region (STAR) perfusion (selective brain, heart and lower body perfusion) has been proposed, allowing to avoid ischemic and reperfusion injuries of internal organs.The objective was to evaluate the benefits of STAR perfusion during reconstruction of the aortic arch in children.Materials and methods. The prospective study included 15 patients who underwent aortic arch reconstruction using a strategy of simultaneous selective brain, heart and lower body perfusion (STAR perfusion) in the period from June 2022 to May 2023. The average age at the time of surgery was 1.3 months (95 % CI (confidence interval) 6.0β16.0), the average body weight was 3.4 kg (95 % CI 2.7β4.1).Results. Π‘hanges of the tissue oximetry index, measured at two points, did not fall below reference ranges at any stage of the operation. The greatest mean value of lactate concentration during the operation was 2.8 Β± 1.0 mmol/l, recovery of the indicator was noted after 6 hours β 1.9 Β± 0.9 mmol/l. Kidney function evaluation β the rate of diuresis and creatinine levels did not exceed reference levels. The average treatment time in the intensive care unit was 7.7 Β± 4.3 days (95 % CI 4.5 10.9), in the hospital β 15.4 Β± 5.8 days (95 % CI 11.4β19.4). There were no deaths among those operated using the new perfusion strategy.Conclusion. The use of the strategy of Sustained Total All Region (STAR) perfusion in case of reconstruction of the aortic arch in newborn, infants and young children is safe and advanced, since it avoids ischemia of internal organs and reduces the risk of post-ischemic complications.ΠΠΊΡΡΠ°Π»ΡΠ½ΠΎΡΡΡ. ΠΡΠ±ΠΎΡ ΡΡΡΠ°ΡΠ΅Π³ΠΈΠΈ ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ ΠΆΠΈΠ·Π½Π΅Π½Π½ΠΎ Π²Π°ΠΆΠ΅Π½ Π΄Π»Ρ Π·Π°ΡΠΈΡΡ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ² Π²ΠΎ Π²ΡΠ΅ΠΌΡ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ. Π ΡΡΠ΄Π΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΏΠΎΡΠ»Π΅Π΄Π½ΠΈΡ
Π»Π΅Ρ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΡΡΡΠ°ΡΠ΅Π³ΠΈΡ Π½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΠΎΠΉ ΡΠΎΡΠ°Π»ΡΠ½ΠΎΠΉ Π²ΡΠ΅ΡΠ΅Π³ΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠΉ (sustained total all region β STAR) ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ (ΠΏΠ΅ΡΡΡΠ·ΠΈΡ Π³ΠΎΠ»ΠΎΠ²Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ·Π³Π°, ΡΠ΅ΡΠ΄ΡΠ° ΠΈ Π½ΠΈΠΆΠ½ΠΈΡ
ΠΎΡΠ΄Π΅Π»ΠΎΠ² ΡΠ΅Π»Π°), ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡΡΠ°Ρ ΠΈΠ·Π±Π΅ΠΆΠ°ΡΡ ΠΈΡΠ΅ΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ ΡΠ΅ΠΏΠ΅ΡΡΡΠ·ΠΈΠΎΠ½Π½ΡΡ
ΠΏΠΎΠ²ΡΠ΅ΠΆΠ΄Π΅Π½ΠΈΠΉ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ².Π¦Π΅Π»Ρ β ΠΎΡΠ΅Π½ΠΈΡΡ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π° STAR-ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ ΠΏΡΠΈ ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ Π΄ΡΠ³ΠΈ Π°ΠΎΡΡΡ Ρ Π΄Π΅ΡΠ΅ΠΉ.ΠΠ°ΡΠ΅ΡΠΈΠ°Π»Ρ ΠΈ ΠΌΠ΅ΡΠΎΠ΄Ρ. Π ΠΏΡΠΎΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΠΊΠ»ΡΡΠ΅Π½Ρ 15 ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΠ², ΠΊΠΎΡΠΎΡΡΠΌ Π±ΡΠ»Π° Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π° ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΡ Π΄ΡΠ³ΠΈ Π°ΠΎΡΡΡ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΡΡΡΠ°ΡΠ΅Π³ΠΈΠΈ ΠΎΠ΄Π½ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΠΎΠΉ ΡΠ΅Π»Π΅ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ Π³ΠΎΠ»ΠΎΠ²Π½ΠΎΠ³ΠΎ ΠΌΠΎΠ·Π³Π°, ΡΠ΅ΡΠ΄ΡΠ° ΠΈ Π½ΠΈΠΆΠ½ΠΈΡ
ΠΎΡΠ΄Π΅Π»ΠΎΠ² ΡΠ΅Π»Π° (STAR-ΠΏΠ΅ΡΡΡΠ·ΠΈΡ) Π² ΠΏΠ΅ΡΠΈΠΎΠ΄ Ρ ΠΈΡΠ½Ρ 2022 Π³. ΠΏΠΎ ΠΌΠ°ΠΉ 2023 Π³. Π‘ΡΠ΅Π΄Π½ΠΈΠΉ Π²ΠΎΠ·ΡΠ°ΡΡ Π½Π° ΠΌΠΎΠΌΠ΅Π½Ρ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ» 1,3 ΠΌΠ΅ΡΡΡΠ° (95 % ΠΠ (Π΄ΠΎΠ²Π΅ΡΠΈΡΠ΅Π»ΡΠ½ΡΠΉ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π») 6,0β16,0), ΡΡΠ΅Π΄Π½ΡΡ ΠΌΠ°ΡΡΠ° ΡΠ΅Π»Π° ΡΠΎΡΡΠ°Π²ΠΈΠ»Π° 3,4 ΠΊΠ³ (95 % ΠΠ 2,7β4,1).Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΡΠΊΠ°Π½Π΅Π²ΠΎΠΉ ΠΎΠΊΡΠΈΠΌΠ΅ΡΡΠΈΠΈ, ΠΈΠ·ΠΌΠ΅ΡΠ΅Π½Π½ΡΠ΅ Π² 2 ΡΠΎΡΠΊΠ°Ρ
, Π½Π΅ ΠΎΠΏΡΡΠΊΠ°Π»ΠΈΡΡ Π½ΠΈΠΆΠ΅ ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ Π½ΠΈ Π½Π° ΠΎΠ΄Π½ΠΎΠΌ ΡΡΠ°ΠΏΠ΅ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ. ΠΠ°ΠΈΠ±ΠΎΠ»ΡΡΠ΅Π΅ ΡΡΠ΅Π΄Π½Π΅Π΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΈ Π»Π°ΠΊΡΠ°ΡΠ° Π²ΠΎ Π²ΡΠ΅ΠΌΡ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 2,8 Β± 1,0 ΠΌΠΌΠΎΠ»Ρ/Π», Π²ΠΎΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΠΎΡΠΌΠ΅ΡΠ΅Π½ΠΎ ΡΠ΅ΡΠ΅Π· 6 ΡΠ°ΡΠΎΠ² β 1,9 Β± 0,9 ΠΌΠΌΠΎΠ»Ρ/Π». ΠΡΠ΅Π½ΠΊΠ° ΡΡΠ½ΠΊΡΠΈΠΈ ΠΏΠΎΡΠ΅ΠΊ β ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ Π΄ΠΈΡΡΠ΅Π·Π° ΠΈ ΡΡΠΎΠ²Π΅Π½Ρ ΠΊΡΠ΅Π°ΡΠΈΠ½ΠΈΠ½Π° Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π»ΠΈ ΡΠ΅ΡΠ΅ΡΠ΅Π½ΡΠ½ΡΡ
Π·Π½Π°ΡΠ΅Π½ΠΈΠΉ. Π‘ΡΠ΅Π΄Π½Π΅Π΅ Π²ΡΠ΅ΠΌΡ Π»Π΅ΡΠ΅Π½ΠΈΡ Π² ΠΎΡΠ΄Π΅Π»Π΅Π½ΠΈΠΈ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΠΉ ΡΠ΅ΡΠ°ΠΏΠΈΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 7,7 Β± 4,3 Π΄Π½Ρ (95 % ΠΠ 4,5 Β± 10,9), Π² ΡΡΠ°ΡΠΈΠΎΠ½Π°ΡΠ΅ β 15,4 Β± 5,8 Π΄Π½Ρ (95 % ΠΠ 11,4β19,4). ΠΠ΅ΡΠ°Π»ΡΠ½ΡΡ
ΠΈΡΡ
ΠΎΠ΄ΠΎΠ² ΡΡΠ΅Π΄ΠΈ ΠΎΠΏΠ΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΏΠΎ Π½ΠΎΠ²ΠΎΠΉ ΠΏΠ΅ΡΡΡΠ·ΠΈΠΎΠ½Π½ΠΎΠΉ ΡΡΡΠ°ΡΠ΅Π³ΠΈΠΈ Π½Π΅ Π±ΡΠ»ΠΎ.ΠΡΠ²ΠΎΠ΄Ρ. ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΡΡΠ°ΡΠ΅Π³ΠΈΠΈ STAR-ΠΏΠ΅ΡΡΡΠ·ΠΈΠΈ ΠΏΡΠΈ ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ Π΄ΡΠ³ΠΈ Π°ΠΎΡΡΡ Ρ Π½ΠΎΠ²ΠΎΡΠΎΠΆΠ΄Π΅Π½Π½ΡΡ
, Π΄Π΅ΡΠ΅ΠΉ Π³ΡΡΠ΄Π½ΠΎΠ³ΠΎ ΠΈ ΡΠ°Π½Π½Π΅Π³ΠΎ Π²ΠΎΠ·ΡΠ°ΡΡΠ° Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎ ΠΈ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎ, ΡΠ°ΠΊ ΠΊΠ°ΠΊ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΈΠ·Π±Π΅ΠΆΠ°ΡΡ ΠΈΡΠ΅ΠΌΠΈΠΈ Π²Π½ΡΡΡΠ΅Π½Π½ΠΈΡ
ΠΎΡΠ³Π°Π½ΠΎΠ² ΠΈ ΡΠ½ΠΈΠΆΠ°Π΅Ρ ΡΠΈΡΠΊ ΡΠ°Π·Π²ΠΈΡΠΈΡ ΠΏΠΎΡΡΠΈΡΠ΅ΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΎΡΠ»ΠΎΠΆΠ½Π΅Π½ΠΈΠΉ
Production of {\pi}+ and K+ mesons in argon-nucleus interactions at 3.2 AGeV
First physics results of the BM@N experiment at the Nuclotron/NICA complex
are presented on {\pi}+ and K+ meson production in interactions of an argon
beam with fixed targets of C, Al, Cu, Sn and Pb at 3.2 AGeV. Transverse
momentum distributions, rapidity spectra and multiplicities of {\pi}+ and K+
mesons are measured. The results are compared with predictions of theoretical
models and with other measurements at lower energies.Comment: 29 pages, 20 figure
Comparisons between Tethyan Anorthosite-bearing Ophiolites and Archean Anorthosite-bearing Layered Intrusions: Implications for Archean Geodynamic Processes
Elucidating the petrogenesis and geodynamic setting(s) of anorthosites in Archean layered intrusions and Tethyan ophiolites has significant implications for crustal evolution and growth throughout Earth history. Archean anorthosite-bearing layered intrusions occur on every continent. Tethyan ophiolites occur in Europe, Africa, and Asia. In this contribution, the field, petrographic, petrological, and geochemical characteristics of 100 Tethyan anorthosite-bearing ophiolites and 155 Archean anorthosite-bearing layered intrusions are compared. Tethyan anorthosite-bearing ophiolites range from Devonian to Paleocene in age, are variably composite, contain anorthosites with highly calcic (An44-100) plagioclase and magmatic amphibole. These ophiolites formed predominantly at convergent plate margins, with some forming in mid-ocean ridge, continental rift, and mantle plume settings. The predominantly convergent plate margin tectonic setting of Tethyan anorthosite-bearing ophiolites is indicated by negative Nb and Ti anomalies and magmatic amphibole. Archean anorthosite-bearing layered intrusions are Eoarchean to Neoarchean in age, have megacrystic anorthosites with highly calcic (An20-100) plagioclase and magmatic amphibole and are interlayered with gabbros and leucogabbros and intrude pillow basalts. These Archean layered intrusions are interpreted to have predominantly formed at convergent plate margins, with the remainder forming in mantle plume, continental rift, oceanic plateau, post-orogenic, anorogenic, mid-ocean ridge, and passive continental margin settings. These layered intrusions predominantly crystallized from hydrous Ca- and Al-rich tholeiitic magmas. The field, petrographic and geochemical similarities between Archean and Tethyan anorthosites indicate that they were produced by similar geodynamic processes mainly in suprasubduction zone settings. We suggest that Archean anorthosite-bearing layered intrusions and spatially associated greenstone belts represent dismembered subduction-related Archean ophiolites
Model for screening of resonant magnetic perturbations by plasma in a realistic tokamak geometry and its impact on divertor strike points
This work addresses the question of the relation between strike-point
splitting and magnetic stochasticity at the edge of a poloidally diverted
tokamak in the presence of externally imposed magnetic perturbations. More
specifically, ad-hoc helical current sheets are introduced in order to mimic a
hypothetical screening of the external resonant magnetic perturbations by the
plasma. These current sheets, which suppress magnetic islands, are found to
reduce the amount of splitting expected at the target, which suggests that
screening effects should be observable experimentally. Multiple screening
current sheets reinforce each other, i.e. less current relative to the case of
only one current sheet is required to screen the perturbation.Comment: Accepted in the Proceedings of the 19th International Conference on
Plasma Surface Interactions, to be published in Journal of Nuclear Materials.
Version 2: minor formatting and text improvements, more results mentioned in
the conclusion and abstrac
- β¦