Thermal Behaviors and Interaction Mechanism of Ammonium Dinitramide with Nitrocellulose.

The initial interaction mechanism is very important for the design and safety of nano-scale composite energetic materials composed of ammonium dinitramide (ADN) and nitrocellulose (NC). The thermal behaviors of ADN, NC and an NC/ADN mixture under different conditions were studied by using differential scanning calorimetry (DSC) with sealed crucibles, an accelerating rate calorimeter (ARC), a self-developed gas pressure measurement instrument and a DSC-thermogravimetry (TG)-quadrupole mass spectroscopy (MS)-Fourier transform infrared spectroscopy (FTIR) combined technique. The results show that the exothermic peak temperature of the NC/ADN mixture shifted forward greatly in both open and closed circumstances compared to those of NC or ADN.

Clinical Characteristics of Transarterial Chemoembolization in Treatment of Primary Hepatocellular Carcinoma Complicated With Respiratory Distress Syndrome.

Objective: The present study aims to analyze the clinical characteristics and etiology of transarterial chemoembolization (TACE) in the treatment of hepatocellular carcinoma (HCC) complicated with acute respiratory distress syndrome (ARDS), in order to improve the early diagnosis rate and cure rate.

Methods: A total of 816 patients with primary HCC received 2,200 TACE treatments from January 2014 to May 2018. Among these patients, 6 patients developed ARDS after TACE.

Theoretical study on stabilization mechanisms of nitrate esters using aromatic amines as stabilizers.

The propellants of nitrate esters can be stabilized by some aromatic amines practically. To probe the mechanism of this phenomenon, we performed DFT calculations on: (1) The decompositions of nitrate esters (with and without the catalysis of NO) and (2) the reaction between the stabilizers and the nitro dioxide (NO is released during the storage of nitrate esters). The structures on the reaction paths (reactants, intermediates and products) were optimized at the (U)B3LYP/6-31G** level.

[The adolescent physical exercise behavior-psychological measurement scale on the Chinese version and its reliability and validity study].

Objective: To develop a suitable physical exercise behavior-psychological scale for the Chinese adolescents and to evaluate its validity and reliability.

Methods: A total of 3600 junior students were recruited and tested through multistage sampling method. Reliability was assessed, using Cronbach's α and split-half reliability; while exploratory factor analysis and confirmatory factor analysis were used to test its validity, with entries-dimension correlation coefficient (IIC), correlation coefficient between the scores and the dimension, the dimension of correlation coefficient test content validity.

[Effects of oligomeric grape seed proanthocyanidins on isoproterenol-induced cardiac remodeling in rats].

The purpose of this study is to evaluate the effect of oligomeric grape seed proanthocyanidins (GSP) on isoproterenol (ISO)-induced cardiac remodeling in rats. ISO was given subcutaneously (5 mg x kg(-1), sc, 7 days) to induce cardiac remodeling in rats. Therapeutic groups were given GSP (50, 100, and 150 mg x kg(-1)) after ISO treatment.

Effects of granulocyte colony-stimulating factor on repair of injured canine arteries.

Background: Endothelial progenitor cells (EPCs) derived from bone marrow may differentiate into endothelial cells and participate in endothelial repair. These cells can be mobilized into peripheral blood by cytokines, including granulocyte colony-stimulating factor (G-CSF). In the present study, we investigated the effects of G-CSF on neointimal formation and restenosis in a canine model of arterial balloon injury.

Variation in complementary and alternative medicine (CAM) use across racial/ethnic groups and the development of ethnic-specific measures of CAM use.

Objectives: The use of complementary and alternative medicine (CAM) is likely to vary among racial/ethnic groups because its use is related to cultural and health beliefs. Understanding patterns of CAM use among ethnic groups could inform clinical practice and the study of CAM use in a diverse population. The authors compared CAM use among Asian-Americans, American Indians, African Americans, Latinos, whites, and other racial/ethnic groups in order to develop ethnic-specific measures of CAM use and explore factors associated with such CAM use across ethnic groups.