Search results

In 2012, commissioned by the Ying cheng Highway, Engineering Consulting Supervision Center of Hubei and Wuhan University of Engineering and Testing Center joint together to detect the bridge 1.2 Analysis of exterior conditions and risk The surface of the bridge is made of cement concrete structure, which 1/4 have seriously damaged, leading to the water accumulation phenomenon on the surface of the bridge, the main arch ribs basically fall off the bottom of the protective layer with the steel expose and serious corrosion, part steel dome side joints have exposed; ventral arch top of the wave through the cracks, which with a maximum width of 2.5mm, arch transverse abdominal wall walls have cracks (especially around the holes), arch pier surface cracks, and found that observed in the past two years, compared with crack propagation fast; main arch rib cross tie beams largely intact, no diseases, no foundation abutment scour deformation.
whole structure directly, but on the other hand, it increased the old bridge’s constant load, the process of construction is relatively simple, but it give high demand to the stability and bearing capacity of the old bridge’s abutments and piers; Outsourcing steel reinforcement is a craft that is more often used in the reinforcement of double curved arch bridge currently, it was often applied to housing construction in the past , the principle is to increase the stiffness of the arch rib, so that the original steel arch rib and the steel plate can bear forces together, thus improving the carrying capacity of the entire bridge, because this process of construction is relatively simple , the quality of construction is easier to control and the duration is short, it is widely used in bridge reinforcement currently, the disadvantage is, you should pay attention to the steel corrosion treatment, close attention should be paid to corrosive steel in the late period, and it must be done by professional
Figure 3 Before strengthening Figure 4 After wrapping steel Author's brief introduction Bo Guo (1971-）,man, AnLu of Hubei, teacher of Urban Construction Institute of Hubei Engineering University, master degree, associate professor, engaged in civil engineering professional teaching and research.

Development Advances in Liquid Rocket Engines Turbopump: A Review Rahul Singhal1,a, Clevin Toppo1,b, Pratap Roy1,c, Rupak Biswakarma1,d, Sristy Sahu1,e, Ujjal Kalita2,f 1Bachelor of Technology in Aerospace Engineering, Lovely Professional University, Punjab-144411, India 2Assistant Professor, Mechanical Engineering Department, Lovely Professional University, Punjab-144411, India Email Address: a*rahul.11915413@lpu.in, bclevin.11912184@lpu.in, cpratap.11917235@lpu.in, drupak.11916724@lpu.in, esristy.11904536@lpu.in, fujjal.19355@lpu.co.in Keywords: Liquid Rocket Engine, Turbopump, Rocket Engine Cycles Abstract.
A Water Test Facility For Liquid Rocket Engine Turbopump Cavitation Testing. 7th International Symposium On Cavitation.

While in the process of construction, due to changes of construction conditions, geology and hydrology and engineering change as well as professional difference of people in charge of the bill quantity bidding, there is always deviation between the actual engineering quantity and the bill quantity bidding.
While in the process of construction, due to changes of construction conditions, geology and hydrology and engineering change as well as professional difference of people in charge of the bill quantity bidding, there is always deviation between the actual engineering quantity and the bill quantity bidding, resulting in contract status change.
Problems and Countermeasures of Water Gap Project Cost Management [J].

In addition, since it is located at the river mouth of the Neva, the city is forced to allow part of the sewage from other regions of the Federation through its main water artery.
A management mechanism that combines the efforts of the authorities, citizens and professionals.

English performance and professional achievement are no longer rigid conditions in doctoral student admittance, while scientific research ability will be the primary criterion for enrolling doctoral students.
For completing the design and implementation of research projects, the ability of a comprehensive using of a wide range of professional knowledge and experimental skills is necessary.
The stationary phase is the water adsorbed on filter paper; and the mobile phase is the different organic reagents prepared by a certain percentage of the developing solvent. 

This results in an increase in pore-water pressure and a corresponding decrease in shearing resistance.
Based on geophysical reconnaissance, muddy water coming from 1# landslide was found.
This phenomenon shows that there was no relationship with surface water erosion，but with the underground water erosion from the inner part of the landslide.
Abundance of underground water and surface water accelerates the tendency of the bedrock terraces to become weaker, which probably induced landsliding.
The variation in natural water content is an indication of the variability of engineering behavior of colluvial and eluvial soils.

Gossypol (GP) is a kind of poorly water-soluble polyphenolic compounds.
To reverse this situation, being prepared gossypol nanosuspensions (GP-NS) can improve the water solubility and stability of gossypol.
Water was allowed ad libitum.
All pharmacokinetic parameters were calculated by DAS software (Ver. 2.0, Mathematical Pharmacology Professional Committee of China).
The determination of water absorption and secretion, is important for the calculation of drug permeability.

The relationship between mud density and water to fine mass ratio is established from fine and water densities as follows: ρmud=1 + Rw/F1ρF + Rw/Fρw (1) Where ρmud is the mud density (kg/m3), Rw/F is the water to fine mass ratio (-), ρF is the absolute density of fines (2840 kg/m3) and ρw is the water density (1000 kg/m3).
Mud is left to settle and then excess water is removed (Fig 2).
If too much water is removed, water can be added during the composite production.
Compared to bibliography, the compressive strength of all the produced composites meets the requirements of the French professional rules, making them suitable for use as wall building material (minimal value = 0.2 MPa)(Construire en Chanvre, 2010).
This corresponds to a mass water content about 6%.

Meanwhile, only epoxysilane-treated nepheline syenite significantly increased the water contact angle of saturated PE.
The mixtures were degassed by sonication in cold water bath for 30 min before used as coating.
Static water contact angles of coatings were measured according to ASTM D7334.
(c) Average water contact angles of composite PE coatings.
Papavinasam: Corrosion Control in the Oil and Gas Industry (Gulf Professional Publishing, London 2014)

By the principle of determining the concrete mix proportions, they keep the same total cementitious materials, water, sand ratio, coarse aggregate weight, maximum aggregate size and water-reducer, change the ratio of fly ash replacement only.
Table 1 Concrete Mix Proportion Test series Parameters Material quantity （kg/m3） bc W/B W/C bs Water Cement Sand Aggregate Fly ash Water reducer Polypropylene fiber 0 0% 0.4 0.40 40% 160 400 735 1102.4 0 2.6 2 20% 0.4 0.50 40% 160 320 735 1102.4 80 2.6 4 40% 0.4 0.67 40% 160 240 735 1102.4 160 2.6 F 20% 0.4 0.50 40% 160 320 735 1102.4 80 2.6 9 Note : bc-the ratio of fly ash replacement, bs-sand ratio 2.2.
The specimens were hoisted to the interior by a professional crane company (see Fig.1, 2) two to three weeks before the test.