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Background: This study explored similarities and differences among Chinese patients and rheumatologists in their attitudes towards and perceptions of traditional Chinese medicine (TCM) for Sjögren's syndrome (SS), including analyzing factors that influenced their decision making. Methods: An anonymous questionnaire was used to conduct a multicenter survey among patients with SS at three tertiary care medical centers in Beijing and among rheumatology clinicians at several hospitals across China. Results were analyzed using descriptive statistics. Results: There were 942 valid questionnaires from patients from 31 provinces and cities in China, with a male-to-female ratio of approximately 1:14, a mean age of 48.81 years, and a median disease duration of 7 (4, 10) years. There were 320 valid questionnaires from rheumatologists, covering 30 provinces and cities in China, with a male-to-female ratio of approximately 0.87:1, a mean age of 48 years, and a median work duration of 10.5 (6, 15) years. The rheumatologists treated a median of 15 (11, 50) SS cases per month, and the median proportion of SS to all rheumatic diseases was 6.66% (6–10%). Many patients believed TCM could cure the root of the disease, and the most expected TCM therapies were TCM patent prescriptions and medicinal teas. Conversely, rheumatologists placed high value on the efficacy of TCM, and most commonly prescribed Chinese herbal decoctions. Most doctor-patient groups were positive about TCM treatment, citing the low side effects as the major advantage. Regression analysis showed that for patients over 40 years old with a course of disease > 4 years, the probability of using TCM has increased by 1–6 times; the probability of recommending TCM in clinical work of doctors who have worked for more than 15 years, TCM and integrated traditional Chinese and western medicine has increased 1–2 times. Conclusions: TCM has become widely accepted and earned attention from doctor-patient groups, especially among older patients and experienced rheumatologists. However, negative prejudices and absence of accurate information about TCM treatments and SS itself require improvement. The contradiction between TCM dosage form and efficacy is a major problem, and patient demand for convenient and efficient TCM patent preparations suggests future work should focus on developing TCM patent preparations with clear compositions and mechanisms. [ABSTRACT FROM AUTHOR]

This paper introduces the concepts of conditional spacings and normalized conditional spacings when an $ (n-k+1) $ (n − k + 1) -out-of-n system or a general coherent system having independent and identically distributed (IID) components just fails at time t. First, we obtain the marginal reliability and joint reliability of conditional spacings, and then conduct some comparisons of conditional spacings. We also investigate the dependent and ISO $ ^* $ ∗ properties of the conditional spacings. Finally, the case when the lifetimes of components are IID exponential is discussed in detail. [ABSTRACT FROM AUTHOR]

Although it is generally accepted by the perovskite solar cells community that their interface behaviors have a profound impact on their power conversion efficiency (PCE) and stability, such interfacial engineering on the bottom interface between electron transport layer (ETL) and perovskite film is still lagging. Herein, a 3D graphene (G)–CuInS2 composite is designed as an efficient ETL to improve both the interfacial contact and passivate defects at the G–CuInS2/perovskite interface. The lattice matching of graphene and methylammonium lead iodide CH3NH3PbI3 inhibits the concentrated stress generated during the growth of perovskite, resulting in crystal films with large grain boundaries. The low‐electron defect density in 3D G–CuInS2 composite facilitates the electron transport from perovskite film to CuInS2 quantum dots. In addition, 3D G–CuInS2 shows excellent carrier extraction capability of reducing carrier extraction time by 1.47 times than that of the counterpart. Correspondingly, a highly improved PCE of 22.4% is obtained, which increases by 15% of the counterpart. Furthermore, the unencapsulated device based on 3D G–CuInS2 shows long‐term stability, maintaining 85% of its original efficiency in air for 30 days. This strategy provides a new route to interfacial passivation engineering for preparation of high‐performance perovskite solar cells. [ABSTRACT FROM AUTHOR]

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