Research on performance and potential of distributed heating system for peak shaving with multi-energy resource.

Climate change and its negative effects are driving the global shift from fossil fuels to renewable energy sources. To tackle the dependency on traditional energy sources in harsh winter regions and improve heating quality during periods of thermal demand fluctuations, this paper proposes a new distributed heating peak shaving system (DHPS). The system combines municipal heat and clean energy within the secondary network while reducing the return water temperature in the primary network.

Research on energy-saving factors adaptability of exterior envelopes of university teaching-office buildings under different climates (China) based on orthogonal design and EnergyPlus.

To achieve carbon neutrality in 2060 (China), building energy-saving has been highly concerned. University buildings have great energy-saving potential as part of energy consumption where 70% of energy loss is caused by heat transfer from the envelope. However, most of the research on energy-saving factors for envelopes is limited to a certain climate or a specific building type, and the optimal configuration of envelopes under different climatic regions has not been well solved.

Usage of intermingled skin allografts and autografts in a senior patient with major burn injury.

Mortality rate in older adults following extensive burn injury is extremely high, and management of these patients is challenging. One of the main problems is that autologous split-thickness skin grafts are scarce and the wounds cannot be covered quickly and effectively. Intermingled skin grafting is a low-tech and economic method, which not only maximizes the use of precious autologous skin but also prevents the wounds from infection and consumption.

[Analysis on the diagnosis and treatment of necrotizing fasciitis complicated with sepsis].

Objective: To recognize the characteristics of necrotizing fasciitis patients complicated with sepsis and summarize the experience the treatment.

Methods: A retrospective study was conducted. The clinical data of 57 patients with necrotizing fasciitis complicated with sepsis admitted to Guangdong Provincial People's Hospital from July 2009 to December 2019 was analyzed by collecting such factors as gender, age, complications, infection sites, pathogens, surgery information, treatment options and outcome.

Successful reconstruction of ischial pressure sores with inferior gluteal artery descending branch perforator flap.

Background: Ischial pressure sores often recur, the surgical choice often troubled the surgeon, because surgery repair should consider future reconstructive procedures. The purpose of this article is to present a new surgical option for the reconstruction of primary or recurrent ischial pressure sores by using an inferior gluteal artery of the descending branch perforator flap.

Methods: A study involving patients suffering from ischial pressure sores was performed from March 2016 to August 2020.

[Protective effects of valproic acid on gut barrier function after major burn injury and its mechanism].

Objective: To investigate the potential protective effects of valproic acid (VPA) on gut barrier function after major burn injury in rats and its mechanism.

Methods: Forty male Sprague-Dawley (SD) rats were divided into sham + normal saline (NS), sham + VPA, scald + NS, and scald + VPA groups, with 10 rats in each group. Rat with 55% total body surface area (TBSA) third-degree severe-burns model was reproduced by immersing into 80 °C water, and the rats in sham groups were given sham-burns by immersing into 37 °C water.

[Analysis of liver damage and reactivation of hepatitis B virus in hepatitis B surface antigen positive patients after extremely severe burn injury].

Objective: To analyze the development of liver damage and reactivation of hepatitis B virus (HBV) during the treatment of extremely severe burn injury in HBsAg positive patients, in order to provide reference for prevention and treatment of liver damage in patients with HBV infection after extremely severe burn.

Methods: Medical records of 54 HBsAg positive patients after extremely severe burn injury admitted from January 2004 to December 2014 were retrospectively analyzed. Development of liver damage and HBV reactivation of these patients during the treatment were analyzed according to the classification of their gender, results of hepatitis B e antigen (HBeAg) and HBV DNA examinations on admission, and development of sepsis in the process of treatment.

[Classification and management of sternal wound complications after cardiac surgery].

Objective: To define the classification of sternal wound complications after cardiac surgery and to explore the appropriate surgical treatment.

Methods: Between July 2008 and January 2014, 260 patients with sternal wound complications after cardiac surgery were treated. There were 124 males and 136 females, aged 11-75 years (mean, 49.

[Effect of bone marrow mesenchymal stem cells on lipopolysacharide-induced secretion of inflammatory cytokines in rat macrophages in vitro].

Objective: To investigate the effect of bone marrow mesenchymal stem cells (BMSCs) on secretion of inflammatory cytokines in macrophages stimulated by lipopolysacharide (LPS).

Methods: Rat BMSCs and macrophages were isolated, cultured, and identified. The BMSCs and macrophages, cultured alone or in co-culture, were treated with LPS or PBS or without treatment and tested for interleukin-10 (IL-10) and tumor necrosis factor-α (TNF-α) concentrations in the supernatants at 1, 3, 5, 7, 12, and 24 h after the treatment using enzyme-linked immunosorbent assay.

[Clinical application of low-molecular-weight heparin (Fraxiparine) in rescuing venous crisis of island skin flap].

Objective: To evaluate the clinical efficacy of low molecular weight heparin (Fraxiparine) in rescuing venous crisis of island skin flap.

Methods: Of the 73 patients with venous crisis of island skin flap, 47 received subcutaneous injection of low-molecular-weight heparin (group I) and 26 were treated with phlebotomy, local compression and topical application of unfractionated heparin solution gauze (group II).

Results: The flap survival ratio was (88.

[Establishment of a rat model of bone marrow mesenchymal stem cell transplantation for repairing full-thickness skin defect].

Objective: To establish a rat model of full-thickness skin defect to receive bone marrow mesenchymal stem cell transplantation for wound repair.

Methods: A full-thickness skin defect measuring 4 cmx4 cm in 36 F344 rats, which were divided into 3 groups with the wound covered with alloskin graft, acellular dermal matrix, or petrolatum gauze. In vitro cultured BMSCs in the 5th passage were transplanted into the skin defect, and the time of wound dressing dissociation and number of transplanted Brdu-positive cells in the wound were observed 14 days later.

[Establishing a parabiosis animal model of two-way paradigm].

Objective: To establish a parabiosis model between allogenic conspecific adult mice to study two-way paradigm.

Methods: Fifty-four female Balb/c mice and 54 male C57BL/6 mice were paired and equally divided into 3 groups, namely group 1 with normal saline (NS) injection, group 2 with injections of spleen cells and cyclophosphamide (CP), and group 3 injected with spleen cells, CP, and cyclosporin A (CsA). The treatments were performed by injecting the spleen cells from one of the mice in a pair into the other via tail vein and vise versa, and two days after the operation, CP (150 mg/kg) was injected intraperitoneally.