Early phases of different types of isolated neutron star

Two Galactic isolated strong X-ray pulsars seem to be in the densest environments compared to other types of Galactic pulsar. X-ray pulsar J1846-0258 can be in an early phase of anomalous X-ray pulsars and soft gamma repeaters if its average braking index is ~1.8-2.0. X-ray pulsar J1811-1925 must have a very large average braking index (n~11) if this pulsar was formed by SN 386AD. This X-ray pulsar can be in an early phase of evolution of the radio pulsars located in the region P~50-150 ms and \.{P}~10$^{-14}-10^{-16}$ s/s of the P-\.{P} diagram. X-ray/radio pulsar J0540-69 seems to be evolving in the direction to the dim isolated thermal neutron star region on the P-\.{P} diagram. Possible progenitors of different types of neutron star are also discussed.Comment: to appear in the International Journal of Modern Physics

Steering surface topographies of electrospun fibers: understanding the mechanisms

A profound understanding of how to tailor surface topographies of electrospun fibers is of great importance for surface sensitive applications including optical sensing, catalysis, drug delivery and tissue engineering. Hereby, a novel approach to comprehend the driving forces for fiber surface topography formation is introduced through inclusion of the dynamic solvent-polymer interaction during fiber formation. Thus, the interplay between polymer solubility as well as computed fiber jet surface temperature changes in function of time during solvent evaporation and the resultant phase separation behavior are studied. The correlation of experimental and theoretical results shows that the temperature difference between the polymer solution jet surface temperature and the dew point of the controlled electrospinning environment are the main influencing factors with respect to water condensation and thus phase separation leading to the final fiber surface topography. As polymer matrices with enhanced surface area are particularly appealing for sensing applications, we further functionalized our nanoporous fibrous membranes with a phosphorescent oxygen-sensitive dye. The hybrid membranes possess high brightness, stability in aqueous medium, linear response to oxygen and hence represent a promising scaffold for cell growth, contactless monitoring of oxygen and live fluorescence imaging in 3-D cell models

Towards a definitive symptom structure of obsessive-compulsive disorder: A factor and network analysis of 87 distinct symptoms in 1366 individuals

Background The symptoms of obsessive-compulsive disorder (OCD) are highly heterogeneous and it is unclear what is the optimal way to conceptualize this heterogeneity. This study aimed to establish a comprehensive symptom structure model of OCD across the lifespan using factor and network analytic techniques. Methods A large multinational cohort of well-characterized children, adolescents, and adults diagnosed with OCD (N = 1366) participated in the study. All completed the Dimensional Yale-Brown Obsessive-Compulsive Scale, which contains an expanded checklist of 87 distinct OCD symptoms. Exploratory and confirmatory factor analysis were used to outline empirically supported symptom dimensions, and interconnections among the resulting dimensions were established using network analysis. Associations between dimensions and sociodemographic and clinical variables were explored using structural equation modeling (SEM). Results Thirteen first-order symptom dimensions emerged that could be parsimoniously reduced to eight broad dimensions, which were valid across the lifespan: Disturbing Thoughts, Incompleteness, Contamination, Hoarding, Transformation, Body Focus, Superstition, and Loss/Separation. A general OCD factor could be included in the final factor model without a significant decline in model fit according to most fit indices. Network analysis showed that Incompleteness and Disturbing Thoughts were most central (i.e. had most unique interconnections with other dimensions). SEM showed that the eight broad dimensions were differentially related to sociodemographic and clinical variables. Conclusions Future research will need to establish if this expanded hierarchical and multidimensional model can help improve our understanding of the etiology, neurobiology and treatment of OCD. © 2021 The Author(s). Published by Cambridge University Press

Diş Çekimi Sonrası Bilateral Santral Seröz Koryoretinopat

Kırkiki yaşında erkek hasta, yaklaşık 2 haftadır özellikle okur-ken aniden görme bulanıklaşması ile kliniğimize başvurdu. Detaylı hikâyesinde hastanın diş ağrısı nedeniyle diş hekimine başvurduğu öğrenildi. Hastanın okuma ile ilgili şikâyetleri diş çekiminden 2 hafta sonra başlamıştı. Hasta diş çekilmesinden 1 ay öncesinde amoksisilin, sonrasında 2 hafta süreyle non-steroid anti-inflamatuar ilaç kullanmıştı. Bu vakada diş çekimi sonra-sında görülen çift taraflı SSKR olgusu sunulmuşturA 42-year-old male presented to our clinic with acute blurring of vision in both eyes especially in reading for about 2 weeks. Detailed history revealed that the patient recently applied to his dentist because of tooth ache. The patient's complaints abo-ut reading had started 2 weeks after tooth extraction. He had a medication of amoxicillin for a month prior to tooth removal and non-steroidal anti-inflammatory drugs after extraction. In this case we report a bilateral CSCR case after tooth extractio

The Results of Toric Intraocular Lens Implantation in Cataract Patients with Preexistıng Corneal Astigmatism

Amaç: Kataraktı ve ?1.0 D korneal astigmatizması olan gözlerde fakoemülsifikasyon cerrahisi sonrasında uygulanan torik göziçi lens implantasyonunun görsel ve refraktif sonuçlarının değerlendirilmesi. Gereç ve Yöntemler: Özel Kudret Göz Hastanesinde 2010-2012 yılları arasında kataraktı ve ?1.0 D korneal astigmatizması olan komplikasyonsuz fakoemülsifikasyon cerrahisi sonrasında torik göziçi lens implantasyonu uygulanmış 18 hastanın 26 gözüne ait veriler retrospektif olarak incelendi. Hastaların cerrahi öncesi ve 1.ay, 3.ay, 6.ay düzeltilmemiş ve en iyi düzeltilmiş görme keskinlikleri (logMAR), astigmatizma değerleri, rotasyon dereceleri kaydedildi. Bulgular: Hastaların ortalama yaşı 57.8±15.4 (47-78) yıl olup 12 hasta kadın ve 6 hasta erkekti. Cerrahi sonrası takip süresi 4.1±2.3 (1-12) ay idi. Cerrahi öncesi düzeltilmemiş GK 1.03±0.32 (logMAR) ve düzeltilmiş GK 0.48±0.25 (logMAR) iken cerrahi sonrası 1. ayda düzeltilmemiş GK 0.32±0.28 (logMAR) ve düzeltilmiş uzak GK 0.18±0.15 (logMAR) seviyesinde idi. Ortalama refraktif silindirik değerler cerrahi öncesinde -2.94±1.0 D ve cerrahi sonrası 1. ayda -0.65±0.60 D saptandı. Son kontrol muayenelerinde GK 0.13±0.15 (logMAR) seviyesine yükseldi ve astigmatizma değeri -0.79±0.65 D saptandı. Cerrahi sonrası 1. ayda yapılan kontrollerde GİL rotasyon değerleri 6.42±2.45 derece ölçüldü. Tartışma: Katarakt cerrahisinde torik göziçi lens implantasyonu cerrahi öncesi korneal astigmatizmayı düzeltmek için etkili ve güvenilir bir cerrahi seçenektir. Çalışmamızda torik GİL implantasyonunun astigmatizmayı belirgin olarak azalttığı, görme keskinliğinde belirgin düzelme sağladığı gösterilmiştir.Purpose: Evaluating visual and refractive results of toric intraocular lens implantation after phacoemulsification surgery in patients with cataract and ≥1.0 D corneal astigmatism. Materials and Methods: The records of 26 eyes of 18 patients who had cataract, ≥1.0 D corneal astigmatism and undergone uncomplicated phacoemulsification surgery with toric intraocular lens implantation between 2010 and 2012 were retrospectively evaluated. Uncorrected and best corrected visual acuity (logMAR), astigmatism values preoperatively and in the postoperative first, third and sixth month and intraocular lens axis rotation degrees were recorded. Results: The mean age was 57.8±15.4 (47-78) years. Twelve were women and 6 were men. The mean postoperative follow up period was 4.1±2.3 (1-12) months. Preoperative uncorrected visual acuity was 1.03±0.32 (logMAR) and best corrected visual acuity was 0.48±0.25 (logMAR). In the postoperative first month uncorrected visual acuity was 0.32±0.28 (logMAR) and best corrected visual acuity was 0.18±0.15 (logMAR). The mean cylinder values was -2.94±1.0 D preoperatively and -0.65±0.60 D in the postoperative first month. At last visits the mean best corrected visual acuity was improved to 0.13±0.15 (logMAR) and the mean astigmatism values was -0.79±0.65 D. The mean axis rotation was 6.42±2.45 degree in the first postoperative month. Conclusion: Toric intraocular lens implantation is an effective safe surgical option in correcting preexisting corneal astigmatism. In our study it is shown that toric intraocular lens implantation reduced astigmatism and improved visual acuity significantly