PURPOSE: To report a case of chronic recurrent varicella virus epithelial kera titis in a child. DESIGN: Case report. METHODS: Clinical examination and polymer ase chain reaction analysis of corneal epithelium. RESULT...
详细信息
PURPOSE: To report a case of chronic recurrent varicella virus epithelial kera titis in a child. DESIGN: Case report. METHODS: Clinical examination and polymer ase chain reaction analysis of corneal epithelium. RESULTS: A 10-year-old heal thy child developed chronic recurrent varicella virus keratitis with pseudodendr ites after recovering from systemic varicella. Analysis of the debrided pseudode ndrites was repeatedly positive for VZV DNA and negative for HSV DNA. Treatment with oral acyclovir and topical corticosteroid drops was effective in eliminatin g the pseudodendrites; however, recurrences occurred once the medications were d iscontinued. CONCLUSIONS: Varicella virus epithelial keratitis in children can b e a recurrent chronic condition requiring prolonged treatment.
The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Lin...
详细信息
The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.
暂无评论