Dear editor,Patients with supraventricular tachycardia(SVT)commonly present to the emergency department(ED).Current guidelines[1,2]do not recommend routine pathology testing and a report on the topic has questioned th...Dear editor,Patients with supraventricular tachycardia(SVT)commonly present to the emergency department(ED).Current guidelines[1,2]do not recommend routine pathology testing and a report on the topic has questioned their role.A systematic review concluded that troponin testing is commonly performed with a high proportion of positive fi ndings,but these results were not associated with major adverse cardiac events.[3]The conclusions of this review were limited by paucity of data and heterogeneity among studies.展开更多
Organic-inorganic hybrid perovskites possess a unique combination of excellent electronic and photoelectrochemical properties that can be readily tailored by partial or complete substitution of their constituent eleme...Organic-inorganic hybrid perovskites possess a unique combination of excellent electronic and photoelectrochemical properties that can be readily tailored by partial or complete substitution of their constituent elements owing to their nonclose packing anion lattice[1,2].Perovskite solar cells(PSCs)employing hybrid perovskites as an active layer have seen rapid improvements and have achieved high power conversion efficiencies(PCEs)now exceeding 25%[2].展开更多
文摘Dear editor,Patients with supraventricular tachycardia(SVT)commonly present to the emergency department(ED).Current guidelines[1,2]do not recommend routine pathology testing and a report on the topic has questioned their role.A systematic review concluded that troponin testing is commonly performed with a high proportion of positive fi ndings,but these results were not associated with major adverse cardiac events.[3]The conclusions of this review were limited by paucity of data and heterogeneity among studies.
文摘Organic-inorganic hybrid perovskites possess a unique combination of excellent electronic and photoelectrochemical properties that can be readily tailored by partial or complete substitution of their constituent elements owing to their nonclose packing anion lattice[1,2].Perovskite solar cells(PSCs)employing hybrid perovskites as an active layer have seen rapid improvements and have achieved high power conversion efficiencies(PCEs)now exceeding 25%[2].
