3,614 research outputs found

    On the number of eigenvalues of SchrΓΆdinger operators with complex potentials

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    We study the eigenvalues of SchrΓΆdinger operators with complex potentials in odd space dimensions. We obtain bounds on the total number of eigenvalues in the case where VV decays exponentially at infinity

    Asymmetric collisions in MadGraph5_aMC@NLO

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    We will gain unprecedented, high-accuracy insights into the internal structure of the atomic nucleus thanks to lepton-hadron collision studies in the coming years at the Electron-Ion-Collider (EIC) in the United States. A good control of radiative corrections is necessary for the EIC to be fully exploited and to extract valuable information from various measurements. We present our extension of photoproduction at fixed order in MadGraph5_aMC@NLO, a widely used framework for (next-to-)leading order calculations at the Large Hadron Collider (LHC). It applies to electron-hadron collisions, in which the quasi-real photon comes from an electron as well as to proton-nucleus and nucleus-nucleus collisions

    An evolution equation as the WKB correction in long-time asymptotics of Schrodinger dynamics

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    We consider 3d Schrodinger operator with long-range potential that has short-range radial derivative. The long-time asymptotics of non-stationary problem is studied and existence of modified wave operators is proved. It turns out, the standard WKB correction should be replaced by the solution to certain evolution equation.Comment: This is a preprint of an article whose final and definitive form has been published in Comm. Partial Differential Equations, available online at http://www.informaworld.co

    ΠŸΠ Π˜ΠœΠ•ΠΠ•ΠΠ˜Π• ΠΠœΠ˜Π”ΠΠœΠ˜ΠΠžΠ’ Π ΠΠ‘Π’Π˜Π’Π•Π›Π¬ΠΠ«Π₯ ΠœΠΠ‘Π•Π› Π’ ΠšΠΠ§Π•Π‘Π’Π’Π• ΠŸΠ Π˜Π‘ΠΠ”ΠžΠš К Π‘ΠœΠΠ—ΠžΠ§ΠΠ«Πœ ΠœΠΠ’Π•Π Π˜ΠΠ›ΠΠœ

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    ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ – ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ биологичСскивозобновляСмого ΡΡ‹Ρ€ΡŒΡ ΠΏΡ€ΠΈ производствС присадок ΠΊ смазочным ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π°ΠΌ Π²Π·Π°ΠΌΠ΅Π½ ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² Π½Π΅Ρ„Ρ‚Π΅ΠΏΠ΅Ρ€Π΅Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ. ΠžΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠΌ исслСдований Π²Ρ‹Π±Ρ€Π°Π½ΠΎ Ρ€Π°Ρ„ΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ΅ подсолнСчноС масло благодаря своСй доступности ΠΈ ΠΎΡ‚Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ дСшСвизнС. Для Ρ€Π΅ΡˆΠ΅Π½ΠΈΡ поставлСнной Π·Π°Π΄Π°Ρ‡ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π° ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΈΠΊΠ° получСния азотсодСрТащих ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ΄Π½Ρ‹Ρ… Ρ‚Ρ€ΠΈΠ³Π»ΠΈΡ†Π΅Ρ€ΠΈΠ΄ΠΎΠ² Π²Ρ‹ΡΡˆΠΈΡ… кислот Ρ€Π°ΡΡ‚ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… масСл Π² Π΄Π²Π° этапа. На ΠΏΠ΅Ρ€Π²ΠΎΠΉ стадии ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ эпоксидированиС Π΄Π²ΠΎΠΉΠ½Ρ‹Ρ… связСй кислотных остатков Ρ‚Ρ€ΠΈΠ³Π»ΠΈΡ†Π΅Ρ€ΠΈΠ΄ΠΎΠ² Π²Ρ‹ΡΡˆΠΈΡ… кислот Ρ€Π°ΡΡ‚ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… масСл. На Π²Ρ‚ΠΎΡ€ΠΎΠΉ стадии ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ эпоксиды ΠΏΠΎΠ΄Π²Π΅Ρ€Π³Π°Π»ΠΈ Π°ΠΌΠΈΠ΄ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ Π°Π»ΠΊΠΈΠ»Π°ΠΌΠΈΠ½Π°ΠΌΠΈ ΠΈ гидроксиламинами ΠΏΡ€ΠΈ раскрытии эпоксидного ΠΊΠΎΠ»ΡŒΡ†Π° ΠΈ ΠΏΠ΅Ρ€Π΅Π°ΠΌΠΈΠ΄ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ слоТноэфирной Π³Ρ€ΡƒΠΏΠΏΡ‹. ЗаслуТиваСт внимания Ρ‚ΠΎ, Ρ‡Ρ‚ΠΎ Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ амидирования ΠΈ пСрСамидирования ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ Π² ΠΎΠ΄Π½ΠΎΠΌ Ρ€Π΅Π°ΠΊΡ†ΠΈΠΎΠ½Π½ΠΎΠΌ объСмС, Ρ‡Ρ‚ΠΎ Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ упростило Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΡŽ производства. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ вСщСства Π²Π²ΠΎΠ΄ΠΈΠ»ΠΈ Π² смазки с Ρ†Π΅Π»ΡŒΡŽ ΠΏΡ€ΠΎΠ²Π΅Ρ€ΠΊΠΈ ΠΈΡ… Π°Π½Ρ‚ΠΈΠΊΠΎΡ€Ρ€ΠΎΠ·ΠΈΠΎΠ½Π½Ρ‹Ρ… ΠΈ Π°Π½Ρ‚ΠΈΠΎΠΊΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… свойств. Π’Ρ‹ΡΡΠ½ΠΈΠ»ΠΎΡΡŒ, Ρ‡Ρ‚ΠΎ основным Ρ„Π°ΠΊΡ‚ΠΎΡ€ΠΎΠΌ, Π²Π»ΠΈΡΡŽΡ‰ΠΈΠΌ Π½Π° Π°Π½Ρ‚ΠΈΠΎΠΊΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ свойства Π΄Π°Π½Π½ΠΎΠ³ΠΎ ряда ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ², являСтся стСричСский Ρ„Π°ΠΊΡ‚ΠΎΡ€ ΠΈ с ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½ΠΈΠ΅ΠΌ Π΄Π»ΠΈΠ½Π½Ρ‹ ΡƒΠ³Π»Π΅Π²ΠΎΠ΄ΠΎΡ€ΠΎΠ΄Π½ΠΎΠ³ΠΎ Ρ€Π°Π΄ΠΈΠΊΠ°Π»Π° ΠΏΡ€ΠΈ Π°ΠΌΠΈΠ½ΠΎΠ³Ρ€ΡƒΠΏΠΏΠ΅ Π°Π½Ρ‚ΠΈΠΎΠΊΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ свойства ΡƒΡ…ΡƒΠ΄ΡˆΠ°ΡŽΡ‚ΡΡ. Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Ρ‹ смазочныС ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡ†ΠΈΠΈ с ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ синтСзированных ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² ΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ ΡΡ€Π°Π²Π½ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ испытания с Ρ‚ΠΎΠ²Π°Ρ€Π½ΠΎΠΉ смазкой. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ испытаний выявили достаточно высокий ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ эксплуатационных свойств исслСдуСмых ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² смазок. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ ΠΏΠΎΠ΄Ρ‚Π²Π΅Ρ€ΠΆΠ΄Π°ΡŽΡ‚ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ использования ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΎΠ² трансформации Ρ€Π°ΡΡ‚ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… масСл Π² качСствС Π°Π½Ρ‚ΠΈΠΊΠΎΡ€Ρ€ΠΎΠ·ΠΈΠΎΠ½Π½Ρ‹Ρ… ΠΈ Π°Π½Ρ‚ΠΈΠΎΠΊΠΈΡΠ»ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… присадок ΠΊ смазочным ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Π°ΠΌ

    Ozone responses in Arabidopsis : beyond stomatal conductance

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    Tropospheric ozone (O-3) is a major air pollutant that decreases yield of important crops worldwide. Despite long-lasting research of its negative effects on plants, there are many gaps in our knowledge on how plants respond to O-3. In this study, we used natural variation in the model plant Arabidopsis (Arabidopsis thaliana) to characterize molecular and physiological mechanisms underlying O-3 sensitivity. A key parameter in models for O-3 damage is stomatal uptake. Here we show that the extent of O-3 damage in the sensitive Arabidopsis accession Shahdara (Sha) does not correspond with O-3 uptake, pointing toward stomata-independent mechanisms for the development of O-3 damage. We compared tolerant (Col-0) versus sensitive accessions (Sha, Cvi-0) in assays related to photosynthesis, cell death, antioxidants, and transcriptional regulation. Acute O-3 exposure increased cell death, development of lesions in the leaves, and decreased photosynthesis in sensitive accessions. In both Sha and Cvi-0, O-3-induced lesions were associated with decreased maximal chlorophyll fluorescence and low quantum yield of electron transfer from Photosystem II to plastoquinone. However, O-3-induced repression of photosynthesis in these two O-3-sensitive accessions developed in different ways. We demonstrate that O-3 sensitivity in Arabidopsis is influenced by genetic diversity given that Sha and Cvi-0 developed accession-specific transcriptional responses to O-3. Our findings advance the understanding of plant responses to O-3 and set a framework for future studies to characterize molecular and physiological mechanisms allowing plants to respond to high O-3 levels in the atmosphere as a result of high air pollution and climate change.Peer reviewe

    Hysteroscopic metroplasty: current status of the problem

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    Hysteroscopic metroplasty is very important for the restoration of the normal anatomy of the uterus, creation of the conditions for favorable obstetric outcomes. This review of the current scientific papers on the topic summarizes the data on the indications, preoperative preparation, and techniques of hysteroscopic metroplasty. It also presents the information on the approaches to the evaluation of the effectiveness of this kind of surgery, peculiarities of the postoperative care, preventive treatment of the intra- and postoperative complications. The paper provides state-of-the art information on the importance of the hysteroscopic metroplasty for the reproductive health of a woman and peculiarities of the gestation course after the dissection of the intrauterine septum.ГистСроскопичСская мСтропластика ΠΈΠΌΠ΅Π΅Ρ‚ Π²Π°ΠΆΠ½ΠΎΠ΅ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ для восстановлСния Π½ΠΎΡ€ΠΌΠ°Π»ΡŒΠ½ΠΎΠΉ Π°Π½Π°Ρ‚ΠΎΠΌΠΈΠΈ ΠΌΠ°Ρ‚ΠΊΠΈ, создания условий для благоприятных Π°ΠΊΡƒΡˆΠ΅Ρ€ΡΠΊΠΈΡ… исходов. Π’ ΠΎΠ±Π·ΠΎΡ€Π΅ Π΄Π°Π½Π½Ρ‹Ρ… соврСмСнной Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹ ΠΎΠ±ΠΎΠ±Ρ‰Π΅Π½Ρ‹ свСдСния ΠΎ показаниях, ΠΏΡ€Π΅Π΄ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΏΠΎΠ΄Π³ΠΎΡ‚ΠΎΠ²ΠΊΠ΅, ΠΌΠ΅Ρ‚ΠΎΠ΄Π°Ρ… гистСроскопичСской мСтропластики. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π° информация ΠΎ способах ΠΎΡ†Π΅Π½ΠΊΠΈ эффСктивности Π΄Π°Π½Π½ΠΎΠΉ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ, особСнностях вСдСния послСопСрационного ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π°, ΠΏΡ€ΠΎΡ„ΠΈΠ»Π°ΠΊΡ‚ΠΈΠΊΠΈ ΠΈΠ½Ρ‚Ρ€Π°- ΠΈ послСопСрационных ослоТнСний, Π° Ρ‚Π°ΠΊΠΆΠ΅ прСдставлСны соврСмСнныС свСдСния ΠΎ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠΈ гистСроскопичСской мСтропластики для Ρ€Π΅ΠΏΡ€ΠΎΠ΄ΡƒΠΊΡ‚ΠΈΠ²Π½ΠΎΠ³ΠΎ Π·Π΄ΠΎΡ€ΠΎΠ²ΡŒΡ ΠΆΠ΅Π½Ρ‰ΠΈΠ½Ρ‹, особСнностях тСчСния бСрСмСнности послС рассСчСния Π²Π½ΡƒΡ‚Ρ€ΠΈΠΌΠ°Ρ‚ΠΎΡ‡Π½ΠΎΠΉ ΠΏΠ΅Ρ€Π΅Π³ΠΎΡ€ΠΎΠ΄ΠΊΠΈ
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