Epiretinal membranes at the macula were seen in 4% of the eyes of 355 patients with homozygous sickle cell (SS) disease and sickle cell haemoglobin-C (SC) disease under the age of 60 years. The presence of proliferative sickle retinopathy (PSR), the extent of involvement of PSR, and vitreous haemorrhage all constitute risk factors for the formation of epiretinal membranes. The occlusion of PSR ...

We sought to determine the scale of scintillation in the interstellar plasma of PSR J0437−4715. We used the Very Long Baseline Array to obtain scintillation amplitude and phase data, from dynamic spectra at 327 MHz. We observe two scales of scintillation of pulsar PSR J0437−4715, differing by more than an order of magnitude in scintillation bandwidth. The widerbandwidth scale of scintillation t...

We report the detection of probable optical counterparts for two Intermediate Mass Binary Pulsar (IMBP) systems, PSR J1528−3146 and PSR J1757−5322. Recent radio pulsar surveys have uncovered a handful of these systems with putative massive white dwarf companions, thought to have an evolutionary history different from that of the more numerous class of Low Mass Binary Pulsars (LMBPs) with He whi...

We have searched for microsecond bursts of emission from millisecond pulsars in the globular cluster M28 using the Parkes radio telescope. We detected a total of 27 giant pulses from the known emitter PSR J1824−2452A. At wavelengths around 20 cm the giant pulses are scatter-broadened to widths of around 2μs and follow power-law statistics. The pulses occur in two narrow phasewindows which corre...

AIM To study whether pulmonary stretch receptor (PSR) activity in mechanically ventilated young cats with healthy lungs during partial liquid ventilation (PLV) is different from that during gas ventilation (GV). METHODS In 10 young cats (4.4 +/- 0.4 months, 2.3 +/- 0.3 kg; mean +/- SD), PSR instantaneous impulse frequency (PSR fimp) was recorded from single fibres in the vagal nerve during GV...

We consider high energy γ-ray radiation from the radio pulsars associated with some unidentified EGRET γ-ray sources. Calculated efficiencies for the conversion of spin-down power to γ-rays and the energy spectra of the high energy γ-rays from these possible γ-ray pulsars in outer gap models are compared with observed results. Of these possible γ-ray pulsars, our results indicate that (i) PSR B...

During apoptosis, phosphatidylserine, which is normally restricted to the inner leaflet of the plasma membrane, is exposed on the surface of apoptotic cells and has been suggested to act as an "eat-me" signal to trigger phagocytosis. It is unclear how phagocytes recognize phosphatidylserine. Recently, a putative phosphatidylserine receptor (PSR) was identified and proposed to mediate recognitio...

Purified defective interfering (DI) particles of vesicular stomatitis virus (VSV) inhibit the replication of a heterologous virus, pseudorabies virus (PSR), in hamster (BHK-21) and rabbit (RC-60) cell lines. In contrast to infectious B particles of VSV, UV irradiation of DI particles does not reduce their ability to inhibit PSR replication. However, UV irradiation progressively reduces the abil...

In this study, we report a novel isothermal nucleic acid amplification method only requires one pair of primers and one enzyme, termed Polymerase Spiral Reaction (PSR) with high specificity, efficiency, and rapidity under isothermal condition. The recombinant plasmid of blaNDM-1 was imported to Escherichia coli BL21, and selected as the microbial target. PSR method employs a Bst DNA polymerase ...

In integrated photonics, the design goal of a polarization splitter/rotator (PSR) has been separating the TE0 and TM0 modes in a waveguide. This is a natural choice. But in theory, a PSR only needs to project the incoming State Of Polarization (SOP) orthogonally to its output ports, using any orthogonal mode basis set in the fiber. In this article, we introduce a novel PSR design that alternati...