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After that, the collective mold with slurry was rapidly placed in a water pool within 2~3 seconds to retain the slurry microstructure at high temperature as far as possible.
Fig.1 Schematic diagram of preparing semi-solid A390 aluminum alloy slurry though a serpentine channel (1) Melting stage (2) Pouring stage(3) Water quenching stage 1.
Cold water 7.
The area A and the perimeter P of every primary silicon grain on a photo were automatically measured by a professional image analysis software.
When the value of FS is closer to 1, it means the primary silicon grains approach a polyhedron to a larger extent. 3 Results and Discussion 3.1 Effect of pouring temperature on the size of primary silicon grains If Al-25%Si aluminum silicon alloy liquid at 762 ºC was directly poured into the collective mold and cooled to 712ºC, then the collective mold with the alloy melt was quickly put into the cold water, the microstructure of the solidified slurry is shown in Figure 2.

The control specimens were prepared with a water/total dry material ratio of 0.6.
To allow minimum workability, the water/cement (w/c) ratio was different according to the quantity of waste used.
The dry material was mixed initially followed by addition of water and manual mixing until a homogeneous paste was formed.
Water Science Technology.
Blackie academic & professional, London, 1993

So ADM1 can hardly be applied directly to engineering calculation and decision analysis without professional computer programs.
At beginning of the experiment, experimental sample of 1.5kg and seed sludge of 0.75kg were inoculated into reactor, then water was added to about 3L.
The temperature and flow of system was controlled at 33-37℃ and 10~12ml-1.min respectively by external circulating pool and water pump.
The water-in pump run 10min per 1h regularly.
Wu, Modifying ADM1 to include formation and emission of odourants, Water Science and Technology, 54(2006), pp.111-117

A large number of grains with different orientations formed at the interface between the initial phase of the separator and the water-cooled chill.
The equiaxed grains nucleated and grown at the water-cooling chill were randomly oriented, which was demonstrated by the test results.
A large number of nucleation occurs when the metal liquid and water-cooled crystallizer came into contact as shown in Fig. 7.
The results showed that the number of grains decreased roughly linearly as the distance to the water-cooling chill increased.
[12] ProCAST-The Professional Casting simulation system user manual, Universal Energy Systems, Inc., Ohio, 1988 [13] R.

Various meteorological disasters (typhoon, storm, flood, low temperature, etc.) will change the environment of water aquaculture and cause great economic losses to aquaculture.
According to aquaculture’s demand for meteorological information service, the system takes aquaculture in Zhanjiang as the research subject to develop the aquaculture GIS electronic map, construct the professional database of aquaculture, collect and sort out the basic geographic information of aquaculture and finally realize the functions of basic information query and space analysis in aquaculture industry, the GIS-based meteorological information monitoring and warning, disaster management, spatial analysis and visualization of meteorological data.

Therefore, water washing is a simple and effective method to solve the pre-pollution of fresh tea leaves.
According to research reports, water washing technology has been used in tea processing in China.
In order to reduce the test error and ensure the scientific validity of the test, it is necessary to strictly control the use time, dosage, procedure and mechanical equipment in the process of tea sample preparation, and strictly control the same sampling method, sampling quantity and detection method in the process of project detection. 2.5 Test Methods 2.5.1 Determination of Indicators for Cleaning Water Samples of Fresh Leaves Water samples for testing: Drink tap water, mix and mix fresh leaves before cleaning, then take water samples Q1 before cleaning, and water samples Q2 after cleaning fresh leaves after mixing and mixing.
Detection of tea water extract: Total method GB/T8305-2002[24].
Experiment on Improving the Quality of Summer Green Tea by Hot Water Soaking [J].

Other professional have also added: (4) Elaboration: Build new concepts upon basics, keep adding details and combine everything into a solid idea. (5) Awareness: Can easily find shortcomings, needs, or unusual parts of an idea.
And for toilet design and manufacturing, the goals are being more water-saving and easy-to-clean [3].
In addition, there is a study indicating that 40~50% of household water is used for sanitary purposes.
That study tries to adopt the concept of ejector to create a pressure difference and clean filth inside toilets using the theory of siphoning to save water.
The main purpose may be that fluid can be ejected in high speed to create suction, resulting in better water-saving effects [8].

When producing less gas or more water, however, the gas wells may move into the non-annular region of slug and churn [1].
However, they did not consider phase slippage and underestimate the pressure drop in high water-cut gas wells.
Table 1 Ranges of the gas well test data Parameter Range Data Points 312 Wellhead Pressure, MPa 0.79 to 30.14 Bottom Hole Pressure, MPa 5.54 to 43.63 Temperature, K 282.38 to 407.15 Gas Rate, 104m3/d 0.81 to 42.06 Liquid Rate, m3/d 0.05 to 216.8 Water Cut 0 to 1 Well Depth, m 1,242 to 4,200 Gas-Liquid Ratio, m3/ m3 445 to 112,860 Internal Tubing Diameter, mm 44.5 to 76.0 Gas Gravity 0.575 to 0.831 Water Gravity 1.01 to 1.09 Oil Gravity 0.714 to 0.818 Proportion of Flow Pattern (using the Ansari transition criteria) 68% Slug or Churn Flow, 32% Annular Flow Calculation of the Void Fraction.
Acknowledgments We thank the financial support for this research by the National Natural Science Foundation “Mechanism Study on Deliquification of Downhole Choke in Gas Well with Water (No. 51104125)”.
Wells: Gas Well Deliquification (Gulf Professional Publishing, USA 2008)

Thus, a method for rapid detection of formaldehyde in textiles is developed, to reduce workload in formaldehyde detection, save test time and need no professional.
Fig.1 Reaction Principle of Formaldehyde and AHMT Experiment Instruments and reagents U-1800 UV-visible spectrophotometer (Japan Hitachi Ltd.); DK-8AD electroheat constant- temperature water tank (Shanghai Yiheng Technical Co., Ltd.); AB104-S electronic analytical balance (Switzerland/METTLER-TOLEDO); formaldehyde with purity of about 36% (AR, Eagle Chemical Reagent Co., Ltd., Zhejiang), which will be diluted into 1500 mg/kg formaldehyde standard working solution, with the accurate concentration calibrated with the iodometric method; (A liquid) sodium hydroxide: 5 mol/L; (B liquid) potassium periodate: 2%; (C liquid) AHMT: 1.0%;.
Experimental method Preparation of the formaldehyde standard color card: the formaldehyde standard solution is diluted to the concentration of 0.20mg/kg, 0.75mg/kg, 1.5mg/kg, 3.0mg/kg, equivalent to the formaldehyde content of 20mg/kg, 75mg/kg, 150mg/kg, 300mg/kg when 1g specimen extracted from 100ml water.
Extraction of formaldehyde from fabrics: put 1.0g fabric into the formaldehyde extraction flask, which will be added with 100ml deionized water of a certain temperature and shaken so that the fabric can be completed wetted.
The flask will be shaken for (60±5)min in the (40±2)°C water.

What is more, it demands that the operators should have high professional technique.
After grinding, take 10.0000g by the analytical balance (precision 0.0001g), distilled water was added in the ratio of 1:5 (W / V), initially stirred uniformly, and then placed on a magnetic stirrer and extracted 40min , and then centrifuged (4000rpm, 30min, 28N) to get supernatant.
First, 2.5mL of different concentrations of naphthol solution were added to tubes (1.2.2.1 (1) in the figure), followed with 0.5mL A liquid Vortex mixed and placed in a constant temperature of 30 ℃ water bath for 5 minutes, then use UV - visible spectrophotometer to measure absorbance values ​​(λ535nm).
After oscillation vortex, it was kept in a constant temperature of 30 ℃ water bath for 5min.
Plant Hydrolases rapid determination of organophosphate and carbamate pesticides in environmental water samples, Xiamen University (Natural Science), 2002, 41 (1): 75 to 78 [10] Chen Fan, Chen Huanlin.