News on China's scientific and technological development.

Equation said:

What's the significant benefits for the South Pole exploration down in the Antarctica?

Click to expand...

BOOTES-4, a global GRB transient source observing system jointly built by CAS Yunnan Observatory and the Spanish National Research Council Institute of Astrophysics of Andalusia, was put into operation on March 20, 2012 at the Yunnan Observatory’s observing site in Lijiang. The event marks China's first possession of a program-controlled observatory.

The fully automated telescope makes its optical observation of the GRB afterglow and other transient sources.

Applied with an advanced program-control technology, the telescope is able to automatically open the dome and move the telescope to observe according to weathers and targets.

Started in last July, it took less than six months for the collaborative parties to complete the site selection, geological survey, infrastructure construction, and goods importation and transportation.

The dome and telescope were installed last December, and the whole system was commissioned and put into an automated operation in February 2012.

Click to expand...

Equation said:

What's the significant benefits for the South Pole exploration down in the Antarctica?

Click to expand...

China Tectonic Environment Monitoring Network that took more than four years to build and consumed an investment worth more than RMB 500 million has recently passed an acceptance check organized by the National Development and Reform Commission.

According to the acceptance document released, the network becomes the third most advanced crustal movement observing network in the world, along with the PBO in the United States and the GEONET in Japan, in terms of both scale and precision.

The network mainly works on GNSS observation, supported by other technologies, including the very long baseline interferometry (VLBI), satellite laser ranging (SLR), and precision gravity and leveling measurement.Equipped with a proprietary data processing system, the high precision and high spatial and temporal resolution network is made up of 260 continuous observing stations and 2,000 occasional observing sites, covering mainland China.

The network is designed to monitor the continental crust movement, gravity field pattern variations, tropospheric water vapor variations in the atmosphere, and ionospheric ion concentration in China, providing basic data and products for studying a range of scientific issues, including the spatial and temporal variation of crustal movement, three-dimensional tectonic deformation patterns, the short term and imminent spatial and temporal variation of crustal deformation under earthquakes, the establishment and maintenance of a modern geodetic reference system, large-scale water vapor transport model for flood season heavy rains, and dynamic ionosphere variation patterns over China.

Click to expand...

An SSF ultrafast process imaging recorder, jointly developed by Shenzhen University, Chinese Academy of Sciences Xi'an Institute of Optics and Fine Mechanics, and Chinese Academy of Engineering Physics Institute of Fluid Physics, recently passed an appraisal check.

Experts involved in the appraisal commented that the ultrafast process imaging recorder makes a precision scientific instrument for studying high-speed transient processes, and it can be used to provide the spatial and temporal information of a transient phenomenon, study detonation physics and shock wave physics, and measure high-density energy transfer, high temperature plasma physics, high-voltage discharge, jet fuel chemistry, and hypersonic wind tunnel experiments.

The instrument’s major technical performances, including the intrinsic spatial resolution of frame imaging, the temporal and spatial information rate of high-speed photography, principle error of adjacent framing, and the maximum scanning speed of scan imaging system, are superior to their internationally advanced counterparts.

Meanwhile, the instrument overturned the conclusion that a frame scanning imaging recorder can not achieve the high spatial resolution that a single-functioned ultra-high-speed camera can.

Click to expand...

According to the 5th International Sensor Networks Standardization Working Group meeting, Chinese researchers have landed a range of breakthroughs in the theoretical study of sensor network (internet of things) standardization.

The three tiered internet of things architecture and the model of common platform plus application subsets, proposed by LIU Haitao and his team at Wuxi Institute of Internet of Things, have been adopted as international standards.

LIU and coworkers embarked on the study of the internet of things in 1999, under an innovative technical line with sensors as the core.

They completed the theoretical study of the internet of things standardization from network-aware interaction to network transmission, and further to application and service, and proposed a three tiered internet of things architecture that fully agrees with the upload sensor network architecture (ISO/IEC), and a model featuring a common platform plus application subsets.

The results and findings stemmed from the study have been adopted as international standards. Among them, the common platform plus application/subsets model becomes a solution to addressing the bottleneck of scale industrialization.

Click to expand...

escobar said:

Please, Log in or Register to view URLs content!

Click to expand...

A PCDS-I Managed Pressure Drilling (MPD) system, independently developed by Chinese Institute of Oil Drilling Engineering Technology, has registered a successful operation at No. 102 Well in the Huabei Oilfield. The new system raised mechanical drilling speed by 90%, and realized "zero leakage" and “zero complications" at the target layer.

Before this, the PCDS-I system has been successfully tested at a number of oil wells, including No. 9 Well in Penglai, Sichuan, and No. 105H Well in Tarim. The current operation at the Huabei Oilfield is designed to see the adaptability to complicated geological conditions.

For example, the target site sits at a great depth that is difficult to drill, with a drilling cycle exceeding 1 year. In the past, the drilling attempt was made using conventional technology, left an array of accidents, including missed drill, borehole collapse, and kick.

To shorten the drilling cycle, the gas drilling process was applied to No. 101 and No. 102 wells, which was unfortunately ceased due to wellbore instability caused by stratum water leaking.

The new system, applied to No. 102 well starting from a depth of 5,378 m, saw no spills or borehole collapse in further 380m, with a raised ROP from 0.63 m/h to 1.20 m/h, or an enhanced efficiency by more than 90%, or 1.5 times the speed registered at the wells in the same section.

Click to expand...

Vini_Vidi_Vici said:

China has too much population and too condensed. China has pretty good network infrastructure, but internet speed is still one of the slowest due to density of population.

Click to expand...

A piece of equipment developed by CAS Changchun Institute of Applied Chemistry to manufacture reverse osmosis composite membranes for seawater desalination has recently passed the experts’ acceptance check.

Researchers started to develop the equipment in 2009. They rounded up in more than two years time the key technologies needed to address the technical hurdles, including temperature control, tension control, corrective control among others.

They use the PCL technique to achieve the coordination between and optimization of hardware and software systems, and rolled out the membrane preparation equipment integrated with polymerization, thermal cross-linking, filming and post-processing.

The equipment has been tested by users with fine results. The successful development of the equipment not only helps engineers understand the impacts of preparation conditions and other key factors on membrane performance, but also raises China’s R&D level in preparing membrane materials, allowing it to break up the monopoly, and providing technical support to the scale production of reverse osmosis composite membrane.

The project has so far filed three invention patent applications, with two of them being granted.

Click to expand...

It is learned from CAS Hefei Institute of Physical Science that the humanoid foot sensor system developed by the Institute’s researchers recently passed the experts’ acceptance check organized by the Ministry of Science and Technology.

According to a briefing, researchers developed key technologies to address the information acquisition and integration in the humanoid foot, and established an integrated foot perception and dynamic complex ground reaction simulation system, allowing the real-time synchronized access to the variation of ground touch, terrain, foot tilt, and walking speed.

The system has been tested on a BHR-2 robot platform at the Beijing University of Technology Institute of Intelligent Robot. Experimental results show that the system is of a fine perspective for practical applications.

The study has resulted in 11 invention patent applications and 13 software copyrights. The research results have been made available for a limited design and production capability.

Click to expand...