Research progress of CO oxidative dehydrogenation of propane to propylene over Cr-free metal catalysts.

CO-assisted oxidative dehydrogenation of propane (CO-ODHP) is an attractive strategy to offset the demand gap of propylene due to its potentiality of reducing CO emissions, especially under the demands of peaking CO emissions and carbon neutrality. The introduction of CO as a soft oxidant into the reaction not only averts the over-oxidation of products, but also maintains the high oxidation state of the redox-active sites. Furthermore, the presence of CO increases the conversion of propane by coupling the dehydrogenation of propane (DHP) with the reverse water gas reaction (RWGS) and inhibits the coking formation to prolong the lifetime of catalysts via the reverse Boudouard reaction.

[Lower respiratory tract infection caused by influenza virus A and influenza virus B in Wenzhou, China: a clinical analysis of 366 children].

Objective: To compare the epidemiological and clinical features of lower respiratory tract infection (LRTI) caused by influenza virus A (IVA) and influenza virus B (IVB) in children.

Methods: The clinical data of 366 children with LRTI caused by influenza virus (IV), who were hospitalized in Yuying Children′s Hospital of Wenzhou Medical University between 2010 and 2014, were analyzed retrospectively, and there were 272 cases caused by IVA and 94 cases caused by IVB.

Results: IV was mainly prevalent from December to March of the next year, with the predominance of IVA.

The -2T/C polymorphism in the adrenocorticotropin receptor gene affects stress perception of patients with alopecia areata.

Background: Altered hypothalamic-pituitary-adrenal (HPA) axis response involved in the pathogenesis of stress-associated alopecia areata (AA) has been reported. A novel polymorphism -2T>C of the adrenocorticotropin receptor (ACTHR) can result in an insufficient HPA response to stress; therefore, the functional polymorphism may underlie a role in stress-associated AA.

Objective: To investigate the relationship between psychosocial factors and the risk of developing AA and to detect the association between the -2T>C polymorphism of ACTHR and AA.

An implication for post-transcriptional control: reciprocal changes of melanocortin receptor type 2 mRNA and protein expression in alopecia areata.

Alopecia areata (AA) is a hair follicle-specific autoimmune disease that is inherited genetically but triggered environmentally. Stress response is believed to play a role in the pathogenesis of AA. The hypothalamic-pituitary-adrenal axis (HPA axis), known as the stress axis, plays a cardinal role in the stress response.

Melanocortin receptor type 2 (MC2R, ACTH receptor) expression in patients with alopecia areata.

Human skin expresses elements of the hypothalamo-pituitary-adrenal (HPA) axis that function as a local stress response system. Because adrenocorticotropic hormone (ACTH) is an intermediate in the HPA axis from corticotropin-releasing hormone (CRH) signal to cortisol secretion, MC2R that binds only ACTH may be important in the stress response of skin. We investigated the local expression of MC2R by immunohistochemistry to identify the role of ACTH/MC2R in stress-associated alopecia areata (AA).

[Viral etiology of acute respiratory infection in children from Wenzhou between 2007 and 2008].

Objective: To study the viral etiology of acute respiratory infection (ARI)in children from Wenzhou, Zhejiang between 2007 and 2008.

Methods: The nasopharyngeal aspirate samples were obtained from 5 097 hospitalized children with ARI. Seven common respiratory viruses, including respiratory syncytial virus (RSV), influenza virus A and B, parainfluenza viruses 1, 2 and 3 and adenovirus, were detected using direct immunofluorescence.

Erratum to: Binding Energy and Spin-Orbit Splitting of a Hydrogenic Donor Impurity in AlGaN/GaN Triangle-Shaped Potential Quantum Well.

[This corrects the article DOI: 10.1007/s11671-009-9398-3.].

Binding Energy and Spin-Orbit Splitting of a Hydrogenic Donor Impurity in AlGaN/GaN Triangle-Shaped Potential Quantum Well.

In the framework of effective-mass envelope function theory, including the effect of Rashba spin-orbit coupling, the binding energy E(b) and spin-orbit split energy Г of the ground state of a hydrogenic donor impurity in AlGaN/GaN triangle-shaped potential heterointerface are calculated. We find that with the electric field of the heterojunction increasing, (1) the effective width of quantum well W̅ decreases and (2) the binding energy increases monotonously, and in the mean time, (3) the spin-orbit split energy Г decreases drastically. (4) The maximum of Г is 1.

[Treatment of calcaneal interarticular fracture by open reduction and internal fixation].

Objective: To investigate the clinical outcome of open reduction and internal fixation of calcaneal interarticular fractures.

Methods: From August 1998, 38 calcanneal interarticular fractures in 35 cases, including 8 of type II, 14 of type III and 16 of type IV according to Sander's classification, were treated by open reduction to restore the posterior articular facet, subtalar facet, Bohler angle and Gissane's angle, following internal fixation by plastic titanic alloy plate. Thirty-three calcanneal interarticular fractures were followed up for 6 to 22 months, 12.