Cerebral venous sinus thrombosis presenting with subarachnoid hemorrhage and intracerebral hemorrhage:a case report

Objective:To explore the clinical and pathological characteristics of cerebral venous sinus thrombosis(CVST)with subarachnoid hemorrhage(SAH)and intracerebral hemorrhage(ICH),and to investigate the diagnosis,radiographic changes,and prognosis over the course of treatment.Methods:The clinical data and radiographic findings of a young male CVST patient,who presented with initial symptoms of SAH and ICH,were collected and analyzed.The relevant literature was also reviewed.Results:The patient had no specific clinical symptoms except for headache.The brain computed tomography(CT)scan revealed SAH,a high-density shadow in the right posterior fossa and cerebellar hemisphere,and ICH in the left frontal lobe.Magnetic resonance venography(MRV)further revealed bilateral thrombosis in the transverse and sigmoid sinuses.Conclusion:CVST with SAH and ICH is rare and difficult to diagnose.Careful radiological study and clinical analysis are important for the correct and early diagnosis of this condition.Anticoagulation therapy is considered the primary treatment for CVST.

A novel blue-light excitable Pr^(3+)doped(Sr,Ba)LaMgTaO6 phosphor for plant growth lighting

In this work,a series of Pr^(3+)ions doped(Sr,Ba)LaMgTaO_(6)phosphors were prepared and applied for plant growth lighting.Under 450 nm excitation,(Sr,Ba)LaMgTaO_(6):Pr^(3+)exhibits intense reddish emission at around 650 nm which is assigned to the3p0→3F2transition of Pr^(3+)ions.The luminescence intensity reaches to the maximum at 2.5 mol%Pr^(3+)doping content both in SrLaMgTaO_(6):Pr^(3+)and BaLaMgTaO_(6):Pr^(3+)systems.Meanwhile,the internal quantum efficiency(IQE)test shows that the IQE of the SrLaMgTaO_(6):0.025Pr^(3+)phosphor is 33.34%upon blue light excitation.The decay curves and temperature-dependent luminescence measurements of the(Sr,Ba)LaMgTaO_(6):Pr^(3+)phosphors were performed and investigated in detail.The red light emitting diodes(LEDs)were packaged using the SrLaMgTaO_(6):Pr^(3+)and BaLaMgTaO_(6):Pr^(3+)phosphors combined with a blue LED chip,which are welloverlapped with the absorption band of photosynthesis.Results indicate that the(Sr,Ba)LaMgTaO_(6):Pr^(3+)can serve as a component of the red light in plant-growth LEDs.