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This paper introduced the relevant concepts of thermophyscal properties and some methods measuring the parameters of material about thermophyscal properties. Different test methods have their own features and advantages. It should be taken into account that the size and mass of material have great influence on the test method.

The influence of cadmium oxide on the thermal decomposition behaviors of AP-CMDB propellants was studied by differential scanning calorimetry (DSC) and accelerating rate calorimetry (ARC). The test results show that the decomposition process of AP-CMDB can be divided into two stages. Cadmium oxide can increase the initial temperature, slow down the decomposition rate and improve the thermal safety of AP-CMDB.

The stabilizer content of aging combustible cartridge case (CCC) was measured by gas chromatography and chemical method. And the test results under different experimental conditions were analyzed. The results showed that the stabilizer content of the CCC decreased gradually with the aging time increased, which is in line with changes of stability of CCC. It is feasible to determine CCC stability by using gas chromatography.

The thermal safety of one new-type DB propellant SZQu-1 was studied by ARC. The test results were compared with the one of double-base propellant SF-3. The ARC test results show that, in an ideal adiabatic environment, the initial exothermic temperature for SZQu-1 is 129.0°C, the adiabatic temperature rise is 787.0°C, the maximum self-heating rate is 23329.9°C/min, the maximum pressure rise rate is 51.2×105Pa·min-1, and the maximum pressure produced by unit mass is 124.1×105Pa·g-1. The activation energy E is 212.2kJ·mol-1, the frequency factor A is 1.3×1022 s-1, and TD24 is 123.0°C, which are calculated by the velocity constant method. The studies have revealed that, comparing with SF-3, SZQu-1 has worse thermal stability and stronger explosiveness.

For the thermal safety evaluation of energetic materials, the experimental devices, test method, conditions of determination, numerical calculation and simulation are listed in this paper on thermal explosion experiment both at home and abroad. By listing typical examples and comparing the existing researches, current study and developing trend of thermal explosion experiment are summarized and prospected.

Cucurbitin is a kind of specific alkaloids in pumpkin seed. The extraction conditions of cucurbitin were optimized as: extraction solvent was 4% dilute hydrochloric acid, rate of material to solvent was 1:20, ultrasonic power was 200 w and ultrasonic time was 75 min. The content of cucurbitin in pumpkin seed was determined by liquid chromatography. The linear between concentration and peak area were good within 160 μg mL-1. The recoveries were 96.50%~102.1%. The relative standard deviation was 1.08%. The results are accurate, true and reliable.

The concentrations of 12 elements (Ca, P, K, Na, Mg, Fe, Se, Mn, Zn, Sn, Cu and Al) were determined in raw and roasted pumpkin seeds by ICP-AES following microwave-assisted acid digestion. The accuracy of the method determined by spiking experiments was very good (recoveries 95.48103.2%) and the limits of detection of elements of interest were from 0.1 up to 17.4μg g-1, the relative standard deviations were less than 3.52%. Compared with watermelon seeds, winter melon seeds, sunflower seeds and hanging melon seeds, the results showed the five kinds of roasted melon seeds are all rich in mineral elements.

This paper introduces briefly the application of thermal analysis in energetic materials and its importance. Thermal analysis has many advantages: operation is simple and quick, wide fields fit to, the characteristic of the high precision and so on. It plays an important role in the thermal decomposition kinetics of energetic materials, stability and compatibility, and the determination of thermal physical constants.

The physical model of the flame of gunpowder composite welding rod (GCWR) is built based on the flame topography and the combustion mechanism of thermite. The chemical reactions in different flame regions are fixed with the physical model, combustion characteristics of thermite and gunpowder combustion theory. The combustion mathematic model on the relationship of combustion velocity of GCWR with thermite content is fixed with the concept of unit volume combustion heat. At last, the results of the test indicate that the rates of combustion obtained by theoretical arithmetic and test are similar.

The content of stabilizer in gas chromatography to detect the stabilizer content in different aging time of the propellant GLQ, and the analysis of testing and statistical data of the measured experimental data. The results show that, the content of centralite in propellant GLQ with aging time decreased, with changing of propellant GLQ stability with time. Therefore, using the gas chromatography to test the content of the centralite , and judging the stability of propellant GLQ is feasible.

Uniform and well-dispersed photoluminescent semiconductor CdSe (Cadmium selenium) QDs (Quantum dots) were in-situ prepared by taking G4.0-NH2PAMAM(polyamidoamine) dendrimers as inner templates in water and methanol respectively. The prepared solutions containing photoluminescent semiconductor CdSe QDs were utilized for detection of unfumed oil fingerprints on tinfoil. The results show that unfumed latent fingerprints treated with prepared CdSe/PAMAM nanocomposites both displayed yellow emission and the latent fingerprints were detected clearly, while treated with CdSe/PAMAM composites in water manifested stronger emission compared with those treated with CdSe/PAMAM composites in methanol; Also, the veins of fingerprints treated with CdSe/PAMAM nanocomposites in methanol became slim because of the dissolution of methanol to oil components in fingerprints.

Diesel combustion dust was analyzed by accelerated solvent extraction-high performance liquid chromatography (ASE-HPLC) in this article. The optimum extraction conditions was that N-hexane was the optimum extraction solvent, extraction time was 30min, temperature was 140°C and the pressure was 120Mpa. it could be a promising technique for the confirmation of the diesel combustion dusts.

The application of solid phase microextractiongas chromatography/mass spectrometry (SPME-GC/MS) to the analysis of the timeliness of burned gasoline analysis adsorbed on the floor carrier was studied in this artical, meanwhile the effects of temperature, wind speed and humidity on the timeliness of burned gasoline analysis adsorbed on the floor carrier has been investigated. The results show that temperature is the major factor that affects the timeliness of analysis of burned gasoline residues analysis, followed by humidity, and finally the wind speed, and the corresponding data of timeliness, derived equations and correlation are provided.

For highly reliable software, it is expensive, time consuming or even infeasible to perform reliability testing by traditional Bayesian-based software reliability demonstration testing plan. Meanwhile, when determining the prior distribution function, people only consider conjugate prior distribution in order to realize the calculation in mathematics but ignores the characteristics of highly reliable software. To address this problem, by introducing the construction method of multilayer prior distribution function into the software reliability demonstration testing plan, this paper put forward a new Bayesian software reliability demonstration testing plan with zero-failure data, which can be used for highly reliable software reliability demonstration testing. Finally through examples, it illustrated the superiority of the method.

It is known that earthquakes generate infrasound. The frequency spectra of the infrasound signals associated with earthquakes are concentrated within a wide frequency range (0.002-0.02 Hz), and have spectral tail extending up to the frequencies 0.1-1 Hz. Therefore, the dynamic characteristics of infrasound sensors should be chosen so as to capture main features of such signals. In this paper, the characteristics of infrasound sensor InSAS2008 developed by Institute of acoustics, Chinese academy of sciences, are described. Its performance indicators are listed and its frequency response is analyzed. The special construction in the mechanical design is developed to overcome drift problem caused by temperature variations. In addition, the infrasound sensor is not affected by nonlinear effects. The calibration results show that infrasound sensor works within a wide and flat frequency band.

For simplicity and not losing generality, a half-vehicle model with 4 rigid DOFs is presented by mobility or impedance method and transfer matrix technology, which bring the flexibility of the body to the proposed model easily and conveniently, instead of complex differential and state space equations. Based on the multi-objective optimization, a synthetic cost function is proposed to investigate the dynamic characteristics and achieve the optimal control of suspensions. The numerical examples are performed to show the validity and efficiency of the presented model, and some valuable conclusions are also obtained to guide the optimal design of suspensions.

Studied the hygroscopic properties of a molded combustible cartridge case by weighing method. Investigated residue formation of cylinder materials with different water content by nitrogen-bomb tests. The results show that the higher the relative humidity, the greater the equilibrium moisture content of the inside-wall material. When the relative humidity was about 90%, its absorption rate was about 5.4%. Compared with its outside wall, the inner parts have much stronger moisture absorption properties. The combustion remains grew in quantity generally with the increase of moisture content.

The gasoline combustion dusts was analyzed by accelerated solvent extraction-high performance liquid chromatography(ASE-HPLC) in this paper. The optimum extraction conditions were that extraction time was 30min, temperature was 120°C and the pressure was 100Mpa. It is a efficient extraction method for a laboratory to quickly extract gasoline combustion dust samples.