Exact Spin and Pseudo-Spin Symmetric Solutions of the Dirac-Kratzer Problem with a tensor potential via Laplace Transform Approach

Exact bound state solutions of the Dirac equation for the Kratzer potential in the presence of a tensor potential are studied by using the Laplace transform approach for the cases of spin- and pseudo-spin symmetry. The energy spectra is obtained in the closed form for the relativistic as well as non-relativistic cases including the Coulomb potential. It is seen that our analytical results are in agrement with the ones given in literature. The numerical results are also given in a table for different parameter values.Comment: 8 page

Sonlu sıcaklık ve yoğunluklarda hadron parametrelerine ortam etkilerinin incelenmesi

TÜBİTAK TBAG Proje114F234Ağır iyon çarpışma deneylerinin analizi, hadron özelliklerinin sonlu sıcaklıklarda ve nükleer madde ortamında incelenmesini gerektirmektedir. Bu özelliklerin incelenebilmesi pertürbatif olmayan yaklaşımlarla mümkündür. Bu yaklaşımlar arasında en başarılı yöntemlerden biri, KRD Toplam Kuralları metodudur. Sonlu sıcaklıkta toplam kuralları bazı yeni özelliklere sahiptir. Bu yeni özelliklerden biri ortamda parçacıkların akımlar ile etkileşmesi olup, hadron spektral fonksiyonunun modifiye edilmesini gerektirir. Diğer yenilik ise sonlu sıcaklıkta maddenin durgun halde olduğu referans sisteminin seçimi sebebiyle, Wilson açılımında Lorentz invaryant olmayan ilave operatörlerin ortaya çıkmasıdır. Bu projenin amacı, sonlu sıcaklık ve yoğunluklarda Termal KRD Toplam Kuralları yöntemini kullanarak, mezon ve baryon parametrelerine ortam etkilerini incelemektir. Pertürbatif katkılar termal kuark propagatörü kullanılarak hesaplanmış, spektral yoğunluğun yok etme ve saçılma kısımları elde edilmiş ve s mertebesinde iki ilmekli katkılar gözönüne alınmıştır. Sonlu sıcaklıklarda 0 durumuna ilaveten ortaya çıkan yeni pertürbatif olmayan katkılar da göz önüne alınarak ağır-hafif skaler, pseudoskaler, ağır-ağır skaler, pseudoskaler, vektör ve aksiyal-vektör mezonların kütle ve leptonik bozunum sabitleri incelenmiştir. Elde edilen ++bu noktadan sonra sıcaklığın artmasıyla, kütle ve bozunma sabitlerinin azalmaya başladığı görülmüştür. Ayrıca T 0 ’ da tensör mezonların kütle ve leptonik bozunum sabitleri, 0 0 * * B BK D DK S S , * * B BK D DK S S ve 1 1 * * B BK D DK S S köşelerinin etkileşim sabitleri, bazı mezonların yapı faktörleri hesaplanmıştır. b , b c( ) ve ' b c( ) ağır baryonlarının yarıleptonik bozunumları ışık konisi KRD toplam kuralları çerçevesinde incelenmiş, ilgili geçişlerin bozunma ve dallanma oranları hesaplanmıştır. Elde edilen sonuçların, yakın gelecekteki LHC deneylerinde test edileceği öngörülmektedir.The analysis of heavy-ion collisions experiments requires investigating hadron properties at finite temperature and nuclear matter medium. To investigate these features non-perturbative approaches are required. Among these approaches, one of the most successful methods is the QCD Sum Rules method. Sum rules method at finite temperature has some new features. One of these new properties is the interaction of the current with the particles in medium requiring the modification of hadron spectral function. The other novelty is the breakdown of Lorentz invariance at finite temperature caused by the choice of the reference frame in which matter is at rest and new operators appear in the Wilson expansion. The aim of this project is to investigate in medium modifications of meson and baryon parameters using Thermal QCD Sum Rules method. Perturbative contributions were calculated using thermal quark propagator, annihilation and scattering parts of spectral density were obtained and the s order of two loops contributions were taken into account. Also, in addition to the 0 case, taking into account the appearing new nonperturbative contributions, heavy-light scalar, pseudoscalar, heavy - heavy scalar, vector and axial-vector mesons masses and leptonic decay constants are studied. According to obtained results, the hadronic parameters remain unchanged up to Τ 100MeV , but after this point, masses and decay constants were started to decrease with increasing temperature. Moreover, at T 0 , tensor mesons masses and leptonic decay constants, 0 0 * * B BK D DK S S , * * B BK D DK S S and 1 1 * * B BK D DK S S coupling constants and some mesons form factors are calculated. Also, heavy b , b c( ) and ' b c( ) baryons semileptonic decays are examined within the framework of light-cone QCD Sum Rules, and decay and branching ratios of related transitions are calculated. The obtained results can be verified in LHC near future experiments

Approximate Solution of the effective mass Klein-Gordon Equation for the Hulthen Potential with any Angular Momentum

The radial part of the effective mass Klein-Gordon equation for the Hulthen potential is solved by making an approximation to the centrifugal potential. The Nikiforov-Uvarov method is used in the calculations. Energy spectra and the corresponding eigenfunctions are computed. Results are also given for the case of constant mass.Comment: 12 page

The Changing Waves of Migration from the Balkans to Turkey: A Historical Account

Ahmet İçduygu and Deniz Sert tell the history of migration from the Balkans to Turkey from the end of the nineteenth century to the present. They relate this history to nation-building, but also to economic conditions and specific Turkish concerns, such as the perceived need for immigration to compensate for a declining population at that time. They also demonstrate that after 1990, ethnic migration decreased and irregular labour migration became more important

Serum potassium-lowering effects of insulin plus dextrose and adrenalin treatment that enhance intracellular potassium transitions in hyperkalemic diarrheic calves

The study examined the serum potassium-lowering effects of different treatment options for hyperkalemia in diarrheic calves (n=18). Calves were allocated into three treatment groups. All groups received isotonic sodium bicarbonate solution for a period of 90 minutes. The animals in group 1 received no further treatment, those in group 2 received a further dose of 50% dextrose and insulin, and those in group 3 received a further dose of adrenaline. High serum K levels in all groups significantly decreased after treatment (AT) than before treatment (BT). Serum potassium levels AT in groups 2 and 3 were found to be significantly lower than those in group 1. Increase in pH, bicarbonate and total carbon dioxide values were observed AT in all groups. However, bicarbonate and total carbon dioxide levels in the AT were not statistically significantly different from those in the adrenaline group compared with the groups 1. These parameters were significantly lower in the group 2. Moreover, the concentration of glucose in the groups 2 in contrast to the adrenalin group was higher than that in both the BT and group 1 AT. The insulin + dextrose combination and adrenaline applications in hyperkalemic calves had similar effects. However, the administration of adrenaline had a lower negative effect on metabolic acidosis treatment. ©2015 PVJ

Safety and Efficacy of a Novel Combination Cream (GN-037) in Healthy Volunteers and Patients with Plaque Psoriasis: A Phase 1 Trial

IntroductionPsoriasis is a common skin disorder associated with physical and psychological burdens. Visible disfiguration can trigger a negative reaction which can cause much of the readily measurable psychological burden of the disease. Although many biological treatments provide some success in the initial clearance of lesions, there is a dispute about the long-term maintenance of the disease, as no current biological treatment has been shown to be curative. Topical therapies are still the most widely used agents as first-line and maintenance treatment for psoriasis. The present study aimed to investigate the safety, tolerability, and, to some extent, efficacy of GN-037 cream in patients with psoriasis and healthy volunteers.MethodsA randomized, double-blind, single-center, placebo-controlled phase 1 clinical study was conducted to evaluate the safety, tolerability, and clinical efficacy of GN-037 cream topically applied twice daily for 2 weeks in healthy subjects (n = 12) and patients (n = 6) diagnosed with plaque-type psoriasis. Six healthy subjects received placebo. Patients with plaque psoriasis were evaluated by a dermatologist, and Physician Global Assessment (PGA) score was required to be >= 3 (moderate psoriasis) at screening.ResultsA total of 31 adverse events (AEs) occurred in 13 participants during the study: 9 AEs in healthy subjects receiving GN-037 cream, 3 AEs in healthy subjects receiving placebo, and 1 AE in one psoriatic patient. The most frequently reported AEs were reactions at the application site, including erythema, exfoliation, pruritus, and burning sensation. During the baseline evaluation, one patient had a PGA score of 3 (moderate) and five patients had a PGA score of 4 (severe). On day 14, in treatment, four patients experienced second grade and two patients third grade improvements compared with baseline, indicating a shift of patients from moderate and severe disease to mild disease and to almost clear (score 2 or 1). There were slight increases in plasma tumor necrosis factor (TNF)-alpha, interleukin-17 (IL-17) and interleukin-23 (IL-23) levels in both healthy volunteers and patients throughout the study, as compared with baseline.ConclusionThe results of this phase 1 trial conducted in 18 healthy volunteers and 6 patients with plaque psoriasis demonstrated a favorable safety and tolerability profile for GN-037; therefore, further clinical development of GN-037 in a phase 2 clinical trial has been initiated in patients with mild to moderate plaque psoriasis (NCT05706870).This study was sponsored by Gen Ilalve Saglik Urunleri A.S. and partially supported by a research grant from The Scientific and Technological Research Council of Turkey [TUBITAK 1505, grant number: 5180004]. The journal's Rapid Service Fee is funded by Gen Ilalve Saglik Urunleri A.S.Gen Ilalve Saglik Urunleri A.S.; Scientific and Technological Research Council of Turkey [TUBITAK 1505, 5180004