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Rigid polyurethane foams (RPUFs) were prepared by heteroaromatic polyol as the matrix polyol, methylphosphonate (DMMP) was added to improve its flame retardancy, and the relative performances were studied. Thermal stability were measured by dynamic mechanical analysis (DMA) and thermo gravimetric analysis...

Sepiolite as catalyst carrier material, now commonly used in low temperature, for high temperature applications was very rare. ZrO2/sepiolite precursor was prepared by Chemical precipitation method, catalyst coating material was prepared at 600 , the samples were aged at 1000 . The powders with and without...

With the development of current network communication technology and continuous expansion of the scale of enterprises, traditional network based on the fixed location of private line cannot meet the needs of modern enterprises, and large enterprises need to achieve effective, Safe and fast connection...

Because of the strong alkalinity and large amount of heavy metals in red mud, many countries have paid more attention to red mud. According to the traditional treatment method, an innovative scheme is proposed in this paper, which uses red mud (RM), ground granulated blastfurnace slag (GGBS), fly ash...

Hexagonally ordered mesoporous silica SBA-15 was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, without addition of silica reagents. The influence of changes in processing parameters, such as activation method, hydrothermal...

The influence of curing temperature on the deformation properties of magnesium oxide(MgO) micro-expansive concrete were studied.Hydration mechanism and expansion characteristics of magnesium oxide(MgO) in cement paste were analyzed by XRD DSC-TG and SEM. Results indicated.Curing temperature had a great...

The Fe doped TiO2 (FET) gels were synthesized by different ferric salts and analyzed by thermal gravimetric analyzer and X-ray diffraction. The TG curves show that the valence states of Fe had a great influence on the preparation of FET gels, Fe3+ was easy to replace titanium atoms to form lattice and...

Complex of cell-THPC-thiourea-ADP with lanthanide metal ions Gd3+ has been prepared. The thermal stability and smoke suspension of the samples are determined by TG, DTA and cone calorimetry. Experimental data show that for the complexes of cell-THPC-thiourea-ADP with the metal ions, thermal decomposition...

Potassium perfluorobutane sulfonate (PPFBS) was used to impart flame retardancy to polycarbonate (PC). The thermal properties of of the PC/PPFBS composites were studied by limiting oxygen index (LOI), vertical burning test (UL-94), TG, and scanning electron microscopy (SEM). The results showed that PC/1wt.%...

TG/DTG was applied to study the overall kinetics for the reduction of pyrolusite by the mixture of cellulose and lignin, two major components of biomass. The respective reduction processes can be described by a new empirical equation based on the JMA equation, and the apparent activation energy is 38.66...

The main work of this thesis is to study and discuss flame retardant properties of the flexible polyurethane foam (FPUF) added with borax as flame retardant. The flammability parameters, including limiting oxygen index(LOI), rate of heat release (RHR), total heat release (THR), total mass loss (TML)...

Montmorillonite as flame retardant was used to flexible poly (vinyl chloride) (PVC), and the flame retardant and smoke suppressant properties of PVC were investigated by the limiting oxygen index, smoke density rating, and cone calorimeter tests (CONE), the thermal degradation behaviors of PVC were studied...

Coal ash as flame retardant was used to flexible poly (vinyl chloride) (PVC), and the flame retardant and smoke suppressant properties of PVC were investigated by the limiting oxygen index, smoke density rating, and cone calorimeter tests (CONE), the thermal degradation behaviors of PVC were studied...

Effects of annealing on structural evolution and microhardness of Zr50Cu40-xAl10Pdx (x=0-15) bulk metallic glasses (BMGs) and composites were investigated using X-ray diffraction (XRD) and micro-hardness analysis. The glass transition temperature Tg and the crystallization temperature Tx of Zr50Cu40-xAl10Pdx...

Specifically, the ‘hadhanah’ rights of children impacted by parental divorce are the subject of this research, which analyzes case number 300/Pdt.G/2022/PA. Tg. to demonstrate how Law no. 35 of 2014 concerning Child Protection controls and protects these rights. As part of this initiative, we will examine...

Elastic memory composite (EMC) is shape memory polymer reinforced by continuous fibers. When environmental temperature of EMC is above the glass transition temperature of its resin (Tg) the resin is in the rubbery state and with high compliance, which makes EMC realize high packaging strain through microbuckling...

Nanoparticulate titanium dioxide were synthesized via homogeneous precipitation assisted by microwave irradiation.The powder was characterized by X-ray diffraction(XRD), Scanning Electron Microscopy(SEM), Differential scanning calorimetryand thermogravimetric analysis(TG-DSC), Roman spectra and Transmission...

The application and development of computer technology have driven and promoted the change of information technology. The computer and information technology have a wide range of penetration and affinity, which influences the world economy and social development in all aspects. In twenty-first Century,...

This article designs a insulation dielectric loss detecting instrument based on MSP430F1331 single chip microcomputer, which is a research on tg value detection of dielectric oil and insulating sleeve. The research shows the application of the new information collection terminal and new algorithm and...

Cotton stalk pyrolysis behavior and mechanism were studied based on the multi-scanning method. The results showed that cotton stalk pyrolysis zone during 30~600 could be divided into four regions, namely, water loss, depolymerization "glass transition", main pyrolysis and charring stage. During the main...

This paper examines the rise of “New Painting” (新绘画) in post-millennium China, positioning it as a critical evolution beyond historical movements like Scar Art (伤痕艺术), the '85 New Wave (85新潮), and Political Pop (政治波普). Rather than a unified style or manifesto, New Painting embodies a radical subjectivity—a...

POSS with cage-like hybrid molecules composed of silicon and oxygen has raised great interests of materials researchers owing to its excellent mechanical and thermal properties, such as tensile strength, tensile modulus and glass transition temperature Tg. And it has been widely used in electronics,...

Based on stringing construction of the conductor in power transmission engineering construction, Shanghai Power Transmission and Transformation Engineering Company designed the double rails propelle type crossing frame, which was used to protect the important crossed objects. Before the crossing frame...

In the study investigate the ameliorative effect of the extract of Polygonum Cuspidatum (PC) in combination with aerobic exercise in hyperlipidemia rat. The rats were raised by high fat diet for four weeks; meanwhile these rats were treated with PC and aerobic exercise for four weeks. The rats were executed...

It is shown that A:= H1, η (G), the sympectic reflection algebra over ℂ, has TG independent traces, where TG is the number of conjugacy classes of elements without eigenvalue 1 belonging to the finite group G ⊂ Sp(2N) ⊂ End(ℂ2N) generated by the system of symplectic reflections. Simultaneously, we show...

To observe effect of cortex lycii radicis ethanol-extract on the hypoglycemic and hypolipidemic in T2DM rats. T2DM rat modelinduced by intravenous injection small dose of streptozotocin (STZ) and feeding high fat-high glucose diet .The rats were randomly divided into blank control group, model control...

For the problem that the practical teaching of network engineering specialty in universities lacks actual network engineering cases, we choose IPSec-VPN as the study object, and based on GNS3 network simulator, we have constructed IPSec-VPN network topology and established a dynamic executable IPSec-VPN...

Study on chloride ion adsorption and combined with the characteristics of sea sand concrete,through the determination of free chlorine ion content in sea sand concrete. The sea sand concrete microstructure and Friedel salt were characterized by using X-ray diffraction (XRD) , scanning electron microscopy...

In this paper, the pyrolysis process of wood chips as a typical biomass feedstock was studied. The thermal gravimetric Fourier infrared spectrometry-mass spectrometry (TG-FTIR-MS) combined apparatus and fixed bed pyrolysis apparatus were used for experimental analysis. The results showed that the main...

The ceramics produced by Cizhou Kiln in the Song and Jin Dynasties are very diverse. Underglaze pottery and overglaze red and green pottery are distinctive products. Children-playing picture is one of the decorative themes of painted porcelain in Cizhou Kiln in the Song and Jin Dynasties, in which the...

For the technical defects of IPSec-VPN on the aspect of reliability, we analyze unreliable factors of site-to-site IPSec-VPN topology model, propose to use link redundancy, equipment redundancy, routing redundancy and other technologies, construct high available IPSec-VPN ideas and methods, and conduct...

IETF has specified Mobile IPv4 and Mobile IPv6 in RFC3344 and RFC3775 respectively, but not yet discussed Mobile IPv4/v6 in any published RFC. This paper proposes a scheme to solve one of Mobile IPv4/v6 problems which Home Agent (HA) is located in IPv4 network, Correspondent Node (CN) is located in IPv6...

Study of Polymerised Merbau Extractives (PME) applications for modified wood products was carried out on oil palm wood. The tests of physical and mechanical properties were conducted using an Instron® UTM following the relevant standards. Thermal properties were investigated using differential scanning...

In order to reduce costs and improve the activity of catalyst in turpentine oil isomerization reaction, two solid acid catalysts (b and c) were prepared by using sulfuric acid and hydrochloric acid treated HangJin 2# clay (a), respectively. On the basis of sulfuric acid-treated HangJin 2# clay (b) as...

In this paper, we prepared PANI/TiO2 nano-composite fibers by the combination of Sol-Gel method and electrospinning technique. The results indicated that the PANI/TiO2 nano-composite fibers have uniform size and good configuration. The average diameter of the PANI/TiO2 nano-composite fibers is about...

Controlled degradation of poly-hydroxybutyrate (PHB) can be obtained by alcoholysis with two types of alcohol in the presence of p-toluenesulfonic acid as catalyst. PHB oligomers terminated with free hydroxyl groups were prepared in this way and characterized using NMR, DSC and TG analyses. The degradation...

In this experiment, Sm (NO3) 3•6H2O, hexamethylene tetramine (HMT) and glucose as the main raw material, nanosized Sm2O3 was prepared by hydrothermal method. Sm2O3 samples were characterized by XRD, SEM, FT-IR, TG-DTA and DRS respectively. It found that plus C elements could increase the crystallinity...

The state land network project is China's "11th Five-Year" period included in the national high-tech industrial development project of the 12 major national science and technology infrastructure construction projects, this paper on the background of the state land network project and the significance...

Objective: Discuss the regulating effect of polydatin on the blood lipid of rat with with hyperlipemia. Method: rats were fed with the high-fat feeding method; the early atherosclerosis (AS) model of rat was established; after successful modeling, rats were given by gavage high-dose, medium-dose and...

This study investigates the influence of TiO₂ nanoparticles on the thermal behavior of polystyrene (PS) and high-density polyethylene (HDPE) nanocomposites. PS/TiO₂ and HDPE/TiO₂ films were prepared using a solution mixing technique followed by hot pressing, and their thermal properties were examined...

Hyperlipidemia can increase the risk of cardiovascular diseases, such as coronary heart disease (CHD), the number one cause of death worldwide each year. Therefore, needed efforts to reduce the prevalence of cardiovascular disease, one of which is parijoto fruit (Medinilla speciosa), which has a high...

Intersections are public areas where two or more road lanes cross and may experience disagreements or conflicts. Based on observations, the W. Monginsidi street - Tg Manimbaya street intersection is one of the unsignalized intersections that often experiences conflicts when vehicles turn, especially...

With the rapid development of mobile Internet and intelligent terminal, the demand of the remote access network is more intense than before. The virtual private network is a common solution to this problem, with its traditional technology realized by a security protocol and tunnel mechanism. But this...

Objective: To explore the expression level and correlation analysis of fibroblast growth factor 21 (FGF-21) and its biochemical indexes in serum of patients with hypothyroidism. Method: To collect 168 cases of patients in the Affiliated Hospital of Beihua University, 62 cases of hyperthyroidism group,...

As a two-dimensional (2D) nanostructure, reduced graphene oxide (rGO) has high specific surface area and excellent conductivity. In this paper, we obtain the TiO2/rGO (TG) composite via a simple mechanical stirring the mixtures of anatase TiO2 nanoparticles and graphene oxide (GO) nanosheets followed...

In this paper, through specific description of the concept of virtual private network VPN, operating principles and the IPSec protocol, and using the OPNET software for performance simulation of IPSec VPN network, we get the result of IPSec VPN throughput of the network, which is unstable. o though IPSec...

The objective was to study the changes in vascular function of HIV-1 (subtype C) infected black Africans over three years. In a longitudinal study (2005–2008) we compared the vascular function of 140 HIV+ (newly diagnosed) black Africans from the North-West province, South Africa. Seventy seven of the...

Type 2 Diabetes Mellitus (T2DM) is a chronic disease indicated by blood sugar level disorder and also influenced by genetic and environmental factors. Many diabetes patients experience dyslipidemia, which is known as diabetic dyslipidemia. In the latest research, SLC2A1 gene polymorphism is strongly...

This study successfully leveraged chicken eggshells to fabricate sulfur-doped calcium carbonate(S/CaCO3) nanocomposite semiconductor materials. The synthesis process employed the sol-gel method through two eco-friendly steps. The first stage is the synthesis of calcium oxide nanoparticle precursors (CaO...

Basing on TG-DTG-FTIR technology, researching about kinetic activation energy E about eucalyptus and absorption bands and characteristic peaks of volatile product under the heating rate 10 min-1, 30 min-1, 60 min-1respectively. The experimental results show that eucalyptus pyrolysis process can be divided...