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Introduction Cyanate ester resins (CEs) attract much attention these days owing to their excellent properties, such as good mechanical properties, low water absorption, low outgassing and excellent dielectric properties [1].
The flexural strength is 170MPa and the modulus is 3.2GPa, with the water absorption being about 2%.
The cured specimens were removed from the mold and cut with a water coolant to required sizes: 35mm×10mm×2mm (type III).
Hamerton: Chemistry and Technology of Cyanate Ester Resins (Blackie Academic & Professional, Glasgow, London, 1994)

Determination of pentachloronitrobenzene in Panax ginseng by HPLC Li Xia1, a LV Ping1,b Wang Yanguo1,c,* 1Department of Biotechnological and Environmental Engineering, Tianjin Professional College, Tianjin 300410, China a 13132120092@163.com , bbestman_0429@163.com, cyangguo_wang@163.com, * Corresponding author Keywords: HPLC, Panax ginseng, pentachloronitrobenzene.
It is also used to prevent the formation of slime in industrial waters.
(Shanghai, China) and distilled water, prepared from deionized water, was used throughout the study. 2 Sample preparation The whole herb of Panax ginseng was dried at room temperature, and then ground into fine powder (0.3 g) by a pulverizer, which was extracted with 10 ml 50% methanol (v/v) for 30 min in an ultrasonic bath at 25°C.

Chosen comfort properties were represented by bending rigidity, crease durability, drapability, abrasion resistance, thermal characteristics, air permeability and water vapor permeability.
Air permeability and water vapor permeability increases with increased metal fiber content for both woven (group no. 1) and knitted (group no. 4) samples, see Fig. 5(b).
Hence higher pores are formed in fabric which allows easier passing of both air (air permeability) and water vapor (water vapor permeability).
It was confirmed that a group of knitted samples has higher air permeability and water vapor permeability compared to woven samples.
Polisky, Radiation hazards issues for telecommunication facility professionals, Comsearch Bulletin TP-100320, Ashburn, Virginia, 2005

In view of the rapid development of electronic control technologies for automobile engine, in the teaching course of automobile specialty in vocational colleges, the electronic control technology of automobile engine has become the core curriculum of automobile specialty in higher vocational and professional colleges.
Therefore, there is an urgent need for the automobile specialty in higher vocational and professional colleges at present to develop some low-cost, pollution-free, easy-to-use and safe teaching equipment adapting to automobile development in line with modern concepts of vocational education, thus to meet the need of practice teaching[4].
As shown in Figure 1, this experiment bench is composed of sliding rheostat 1, storage battery 2, DC motor 3, ignition switch 4, normally opened relay 5, ignition control component 6, camshaft position sensor 7, water temperature sensor 8, intake temperature sensor 9, throttle valve control component 10, 1 (2) cylinder knock sensor 11, knock sensor signal shielded wire 12, 3 (4) cylinder knock sensor 13, crankshaft position sensor signal shielded wire 14, crankshaft position sensor 15, 1 cylinder injector indicator light 16, 2 cylinder injector indicator light 17, 3 cylinder injector indicator light 18, 4 cylinder injector indicator light 19, air flow sensor 20, charcoal canister electromagnetic valve indicator light 21, oxygen sensor 22, fuel pump work indicator light 23, reader coil 24, anti-theft indicator light 25, fuel pump relay 26, 1 cylinder spark plug 27, 4 cylinder spark plug 28, 2 cylinder spark plug 29, 3 cylinder spark plug 30, measuring terminal 31, axial flow fan 32, engine
control component; 7-camshaft position sensor; 8-water temperature sensor; 9- intake temperature sensor; 10- throttle control component; 11-1 (2) cylinder knock sensor; 12- knock sensor signal shielded wire; 13- 3 (4) cylinder knock sensor; 14-crankshaft position sensor signal shielded wire; 15-crankshaft position sensor; 16-1 cylinder injector indicator light; 17-2 cylinder injector indicator light; 18-3 cylinder injector indicator light; 19-4 cylinder injector indicator light; 20-air flow sensor; 21-charcoal canister electromagnetic valve indicator light; 22-oxygen sensor; 23-fuel pump indicator light; 24- reader coil; 25-anti-theft indicator light; 26-fuel pump relay; 27-1 cylinder spark plug; 28-4 cylinder spark plug; 29-2 cylinder spark plug; 30-3 cylinder spark plug; 31-measuring terminal; 32-axial flow fan Fig.1.
If an illegal key is used, or there is failure in the anti-theft system, the alarm indicator light will flash continuously after turning on the ignition switch. 2.2 Working process of the experiment bench When the ignition switch 4 is closed, the switch contact of the normally opened relay 5 is closed, and the DC motor 3 and the axial flow fan 32 turn according to the position of the throttle pedal with a certain speed, while the crankshaft position sensor 15 provides the engine ECU with speed signal and crankshaft position signal, and the camshaft position sensor 7 provides the engine ECU with camshaft position signal[7]; the axial flow fan 32 provides the air flow sensor 20 with air flow, the air flow sensor 20 changes the intake flow signal to an electric signal, which is conveyed to the engine ECU ; the water temperature sensor 8 and the intake temperature sensor 9 according to the adapted resistance provide water temperature signal and intake air temperature signal to the engine

Classification and the shortcomings of the existing fire protection products Fire products can be divided into two categories: one is the large-scale professional fire equipment, including large-scale professional fire truck, foam fire truck, fire-gun truck, fire aircraft and helicopter, fire boat etc. these equipment requires specialized operation, and can only be equipped in special place with scarce amount.
For water type extinguisher (with anti-freezing agent), it should be: +5℃, 0℃, -5℃, -10℃, -15℃, -20℃, -25℃, -30℃ or blow 3.2 Regulations of the corrosion resistance in foreign and domestic fire extinguisher standards It has been shown in table 2, U.S. military standards are too harsh in terms of the requirements in the test, which made the cost too high.
Comparison of aspects related to corrosion resistance in different standards Aspects in comparison National standards of China U.S. military standard European standard corrosion resistance The salt solution is to consist of 50(±1 g)/L of common salt and distilled water.
After this, the extinguisher should be washed in warm water and do the corresponding check.
The salt solution is to consist of 20% (by mass) of common salt and distilled water.

For example, American Camping Association (ACA), American Automobile Association (AAA), League of American Luxury Camp, and so on, they are associate with various professional organization or public utilities to form dimensional service support system.
The construction of professional tourism campsite in China is mainly centers in three economy circles -Beijing, Yangtze River Delta and Zhujiang Delta, in addition, west region centers on Chengdu and Xi’an, the two high-quality routes also begin the construction of tourism campsite mainly around southwest ecology and northwest Silk Road.
Most of these places have a favorable environment with green fields and water resource.
Various types of waste water generated within the campsite shouldn’t be disposed at will but be collected for treatment. 
Make full use of natural energy, like solar energy, wind, water, biogas, etc. and provide energy resources for campsite.

The paper provides information that could be useful for consultants and professionals in the developing world, engaged in planning, procurement and installation of solar power systems.
The normal beam radiation at the earth's surface level nbI , , is a function of ( )ωτ , the transmittance of the atmosphere, which depends largely on the optical depths of water vapour and particles: hence, the transmittance varies during the day and from season to season due to changes in water vapour concentration and path-length variations.
While this system is suitable for small power applications such as water pumping for livestock, and small scale irrigation activities, they are not adapted to large installations because of the weight that should be moved.
[7] Solar Energy Case study: Mauna Lani Water Pumping facility. 2006.
Powerlight.com/case-studies/agriculture/mauna lani water.shtml

Correct using of entrance size including flow rate and operations of sampling professionals.
An integrated dust removal system, which including fine water-spray, acoustic condensation and inertial settling, has made some progress in theory and experiment [21].
Fine water-spray is utilization of mechanism of dust catching and condensation.
This technology uses ultrasonic spray technology to make full spray of water, and make the acoustic condensation of fine particles, then finally achieve the fine water-spray.
Magnetic separation technology has been used on treatment of particles in waste-water since the 1970s.

Generally, when the water-saturated concrete was in the process of freezing-thawing cycle, it was suffered by the stress mainly consists of two parts, one is caused due to the volume expansion of water to ice, it cause the tensile stress in the microstructure, the other is when the water freezes in the wool stoma, the supercooled-water migrated may cause the osmotic pressure to the microstructure.
Water reducing agent.
Water reducing agent is a surface-active substance, it absorbs with cement particle and makes cement particle electrical.
These water-reducing agent can greatly reduce the water-cement ratio,[2] and significantly reduce the consumption of water, reduce the bubble size and average distance.
Strength grand: C40; Slump: 160±30 mm; Sand ratio: 42%; W/C ratio: 0.34; Table 1 Test proportion c s g w Admixture Norms PII52.5 medium 5-25 water A1 A2 CNI Fiber Weight ratio 0.09 0.31 0.43 0.06 0.102 0.003 0.005 0.0004 Test result Due to the complex text and the professional equipment, the performance of the concrete was tested by Shanghai Gangwan Engineering Quality Detection Co., Ltd.

Construction activities responsible for land erosion, water pollution, excessive resource and energy consumption.
Though SIPs are already use for energy efficiency among building professionals.
Hydroceramic It is a mixture of clay and hydrogel, which has the ability to swell in water and retain its structure.
The evaporation of the water contained in the material makes it a good material for passive cooling of the building.
In biophilic design, natural elements such as plants, water and sunlight are incorporated into building design.