Nokia Unveils Its First Linux Phone N900
Unveiled the Nokia N900, its first smart phone running the Linux software, aiming at improving its offering at the top end of the market.
The Nokia N900 runs on the Linux-based Maeme 5 software, featuring true multitasking with applications as well as Web browsing with Adobe Flash support.
Nokia’s Symbian operating system workhorse controls half of the Smartphone market volume - more than its rivals, Apple, Research in Motion and Google put together. Nokia said Linux would work well in parallel with Symbian in its high-end product range.
The new N900 model, with cellular connection, touch screen and slide-out keyboard, will retail for around $ 712, excluding subsidies and taxes.
Nokia also unveiled a new Business Solutions unit, which aims to better tie together its operations and new mobile Internet phone services offering.
Technical details of N900:
Display:
3.5 inch touch-sensitive widescreen display
800 × 480 pixel resolution
Web browsing:
Maemo browser powered by Mozilla technology
Adobe Flash ™ 9.4 support
Full screen browsing
Camera:
5 megapixel camera (2584 × 1938 pixels)
Image formats: JPEG
CMOS sensor, Carl Zeiss optics, Tessar lens
3 × digital zoom
Autofocus with assist light and two-stage capture key
Dual LED flash
Full-screen viewfinder
Photo editor on device
TV out (PAL / NTSC) with Nokia Video Connectivity Cable (CA-75U, included in box) or WLAN / UPnP
Landscape (horizontal) orientation
Capture modes: automatic, portrait, video, macro, landscape, action
Video:
Wide aspect ratio 16:9 (WVGA)
Video recording file format:. Mp4, codec: MPEG-4
Video recording at up to 848 × 480 pixels (WVGA) and up to 25fps
Video playback file formats:. Mp4,. Avi,. Wmv, .3 gp; codecs: H.264, MPEG-4, Xvid, WMV, H.263
Music and audio playback:
Maemo media player
Music playback file formats:. Wav,. Mp3,. AAC,. EAAC,. Wma,. M4a
Built-in FM transmitter
Ring tones:. Wav,. Mp3,. AAC,. EAAC,. Wma,. M4a
FR, EFR, WCDMA, and GSM AMR
Digital stereo microphone
DLNA
The pace of design work from the HDD is the system rack and pinion carriage. In 1991, American Augers was the first HDD manufacturer to eliminate chain drive systems and introduce a rack and pinion system, which is now the industry standard. The benefit of the transmission system is rack and pinion carriage movement is smoother, operational control is more accurate and has no complicated parts that have to be replaced constantly.
In the drilling process that drills be used, according to industry standards have been classified into the following three specific categories:
HDD Maxi Rig (large size):
Driller with over 45 tonnes maximum thrust / reverse.
Mid Size HDD (medium size):
Puncher with capacity of 11 - 44 tonnes of thrust / reverse.
Small Line HDD (small line):
Puncher with less than 11 tons of thrust / reverse.
The transmission configuration of the HDD comes in three basic formats. The first is standard for most in sizes small, medium, like some big punches, the transmission is mounted on board the drill. Trailer-mounted units tend to have its transmission as separate units that are connected to the main drill through the wiring. The reason behind this is the weight of the unit during transport, because of the size and construction of individual power unit would be necessary for large applications. However, there are some units HDD, big style punch, with power units on board.
Another drill design is the key system, which incorporates torque cylinders with large diameter drilling for the break, and cylinders of large diameter clamp for maximum clamping force, and less wear on the dice. American Augers integrated into the design capacity of the key in some big punches can be removed to reduce weight for transport. The separation of the key in an average of 305 mm, improves visualization of the board of the tool, and aid in the ability to hold any length pipes. American Augers allowed in most major drillers a complete tour of the thrust frame so that there is more ability to break the seal of the tool in different parts of the thrust frame.
The drilling operations have to feel comfortable in building the unity of the thrust frame. A long time ago to American Augers is known for its distinguished reputation of producing racks thrust with strength and durability, leaders in the industry. The thrust frame design is typically the property of H beam for optimum strength and weight ratio, stiffness that allows some flexibility so that the machine is not so rigid, and allowing the right balance and moving tenacity. It also has a steel frame gear drive that provides the route of the frame and the key and it gives strength to the attributes of long life and durability.
There are three basic ways in which a group of operators will try to handle the hose drills in different drillers HDD: The first is the use of an excavator or crane independent. A second process is the incorporation some drills aboard a lifting crane, or a third process that uses housing baskets mounted on the drill pipe. Each one works differently and achieves the same goal.
HDD and the environment
There is an environmental approach to the HDD that is easy to justify when methods such as trenching analyzed because it is a process of opening and cut significant lengths of the soil surface to install pipes and utility networks, and so on. The collateral damage from the trenching operation may be severe and long-term effects that takes in natural environments.
The process of digging trenches for the installation of utilities and other smaller excavations around trees can have a significant negative impact on the roots. You can remove important roots, changing drainage patterns and create conditions that can destroy entire networks of trees. It has been shown by some studies that the annihilation of the root may be less than 40% of the entire root system. The trenching also cause many disruptions if implemented in an urban environment where there is great potential for the excavation it will be blamed unduly disrupt existing infrastructure, traffic patterns, neighborhoods and other features of the daily routine.
Economic benefits of HDD
HDD is usually less expensive than other trenchless methods such as micro-tunneling and excavation in the open. In neighborhoods, metropolitan areas, wet lands / waterways and the development of infrastructure (eg roads, rail lines, existing utilities) to HDD can save a considerable amount of costs of installation / restoration and may provide a enormous amount of goodwill to the community and the environment.
Technological advances in HDD
Continue its advancements in HDD technology. There have been notable examples of how the machines are more complicated, but maintain their characteristic of being easy to operate.
The Wiggle Steer ® feature found in most of the HDD units manufactured by American Augers, offers the operator of the directional drilling means to rotate the drill pipe and then cutting the drill head, forward and backward for a predetermined period. This movement forward and backwards could cause the hole made by the cutting head to be more open in a particular direction and, therefore, facilitates the direction of the drill pipe in that direction under the earth.
The advancement of technology is a system ROOTS, located on the units HDD twin-engine American Augers. This feature has a few benefits: they are activated simultaneously allows the two power units, enables a power unit to function while giving power to a drive that is not in use. It allows a unit to work but kept isolated power unit is not used and can have the ability to have a power unit operating, but can remove or maintain the unit not being used. For the needs of the project and to avoid stoppage time, ROOTS technology keeps the machine running at full speed, but the entire system operates with half the RPM rotation and half the speed of the car.
Contractors are realizing that mud motors to be playing a critical role in the HDD process, especially when drilling through hard rock and compacted soil. The benefit of sludge is an engine that allows faster cutting speeds and reduces project time. To accommodate the engines for mud, drillers HDD must have a larger course of fluid-the path where the mud is pumped into the hole. The basic design must also incorporate a rotary brake, as the need to guide the engine for sludge has to have an actuator to stop the rotation of the drill pipe.
Contractors must toil if they try to use a mud motor on a drive that does not have a rotary brake and engine torque to try contra rotating the drill string. In addition, there must be a swivel-mounted for drilling mud that works in harmony with hoses, fittings and similar large-diameter stems. If these components do not have a large diameter, the flow in general can be tight and may have unhealthy levels of pressure. The selection of a drill pipe is also important, since the end of the pin of the pipe section with smaller diameter, must be large enough to accommodate the volume of fluid being pumped.
Another feature that is being integrated into the latest HDD models is the Quiet Pak ® system to reduce noise, thereby reducing the decibel output of the transmission.
Moving Forward
HDD contractors will benefit from innovative technologies, manufacturers with experience and knowledge of the benefits of HDD applications, so that the industry will continue to grow and the performance of contractors will be the best in all types of public facilities and underground application projects. CPA