Interpretation of dispersionless integrable hierarchies as equations of coisotropic deformations for certain associative algebras and other algebraic structures is discussed. It is shown that within this approach the dispersionless Hirota equations for dKP hierarchy are nothing but the associativity conditions in a certain parametrization. Several generalizations are considered. It is demonstra...

امروزه در مبحث محاسبات رآکتورهای هسته‌ای مثل فرسایش و مدیریت سوخت، تحلیل گذرا بازسازی توان میله‌های به دنبال روش‌هایی جهت استفاده کدهای هستند که علاوه بر دقت قابل‌قبول از هزینه زمان بهینه‌ای برخوردار باشند. این پژوهش با گسسته‌سازی معادله پخش نوترون روش نودال بسط شار جریان ‌متوسط مرتبه بالا نشان داده می‌شود روش‌ بهینه قابل‌قبولی بهره می‌برد. مستقیم الحاقی نوترون، برای هندسه مربعی دوبعدی دو گروه ...

به‌منظور تحلیل نوترونیک قلب رآکتورها، نیاز به توسعه نرم‌افزارهای محاسبات هسته‌ای جهت تولید ثابت‌های چند گروهی و حل عددی معادله پخش است. برای این منظور، از روش‌هایی استفاده می‌شود که علاوه بر دقت مناسب حجم زمان بهینه‌ای برخوردار باشند. در پژوهش تئوری حاکم روش نودال بسط شار جریان متوسط هم‌چنین مرتبه‌های بالاتر پرداخته می‌شود. پس‌ازآن با گسسته‌سازی نوترون، نشان داده روش‌ بهینه خوبی بهره می‌برد. مس...

Alkaloids containing a central bicyclo[n.2.2]piperazinedione (diketopiperazine, DKP, n 2) ring system, bridged at positions 3 and 6, constitute an ever-growing class of secondary metabolites. DKPs 1, biosynthesized from amino acids either by nonribosomal peptide synthases (NRPS) or by tRNA-dependent enzymes called cyclodipeptide synthases (CDPS), are the central precursors, from which diverse a...

We construct the formal solution of the Cauchy problem for the dispersionless Kadomtsev Petviashvili equation as application of the Inverse Scattering Transform for the vector field corresponding to a Newtonian particle in a time-dependent potential. This is in full analogy with the Cauchy problem for the Kadomtsev Petviashvili equation, associated with the Inverse Scattering Transform of the t...

The thermodynamical partition function of the Duffin–Kemmer–Petiau theory is evaluated using the imaginary-time formalism of quantum field theory at finite temperature and path integral methods. The DKP partition function displays two features: (i) full equivalence with the partition function for charged scalar particles and charged massive spin 1 particles; and (ii) the zero mode sector which ...

Abstract We study the non-inertial effects of a rotating frame on spin-zero, Duffin–Kemmer–Petiau-like oscillator in cosmic string space-time with non-commutative geometry momentum space. The spin-zero DKP-like is obtained from Klein–Gordon Lagrangian non-standard prescription for coupling. find that solutions time-independent radial equation non-zero non-commutativity parameter parallel to are...

Introduction: Multimodal analgesia is key in the effective management of acute pain. Previous clinical trials have demonstrated good results with use a fixed-dose combination (FDC) tramadol 75 mg and dexketoprofen 25 (TRAM/DKP) pain management. However, there dearth real-world evidence on efficacy safety this non-surgical pain, especially among Asian patients. The case series reported herein in...

The protonated cyclo (LTyr-LPro) and (LTyr-DPro) dipeptides based on a diketopiperazine (DKP) ring are studied by tandem mass spectrometry in Fourier transform ion cyclotron resonance (FT-ICR) spectrometer. Collision-induced dissociation (CID) infrared multiple-photon (IRMPD) spectroscopy results interpreted with the aid of quantum chemical calculations dynamics simulations. All conformers iden...