نتایج جستجو برای: drill mud

تعداد نتایج: 12315  

2006
SAMER L HIJAZI Balasubramaniam Natarajan

Wireless broadband communications is a rapidly growing industry. New enabling technologies such as multi-carrier code division multiple access (MC-CDMA) are shaping the future of wireless systems. However, research efforts in improving MC-CDMA receiver performance have received limited attention and there is a need for innovative receiver designs for next generation MC-CDMA. In this thesis, we ...

Journal: :The International journal of oral & maxillofacial implants 2012
Scott E Bulloch Russell G Olsen Brandon Bulloch

PURPOSE To determine whether a wire-guided single drill protocol could be utilized without causing an increase in bone temperature beyond those seen with the traditional techniques of sequential drilling with and without a drill guide. MATERIALS AND METHODS A bovine femoral bone model was used with thermocouples and infrared temperature measurements to record thermal increase of the bone and ...

2017
Takao Arai Shoichi Ohta Masaki Onishi Miyu Taniguchi Junya Tsurukiri Kenichiro Kumasaka Katsuhiro Nagata Kensuke Suzuki Ken Harigae Tetsuo Yukioka

PURPOSE It is difficult for emergency physicians to plan and execute a disaster medical response drill while conducting their daily work activities. Readily available drill preparation manuals are therefore essential, alongside assessment methods to ensure quality. Here, we propose email text analysis as a manual assessment method, and investigate its validity. METHODS The preparation status ...

2005
Dušan Kocur Jana Čížová Stanislav Marchevský

Abstract The microstatistic multi-user receiver (MSF-MUD) belongs to non–linear single–stage multi-user receivers' family (NSS–MUD) [1-3]. The output of the MSF-MUD is taken as the sign of the multi-channel nonlinear transformation of the output of a bank of the matched filters (BMF). The non-linear transformation is made by multi-channel conventional microstatistic filter (M-CMF) [2]. The M-CM...

2016
Wentao Liang Sara J. Couperthwaite Gurkiran Kaur Cheng Yan Graeme J. Millar

12 13 The removal of fluoride using red mud has been improved by acidifying red mud with 14 hydrochloric, nitric and sulphuric acid. This investigation shows that the removal of fluoride 15 using red mud is significantly improved if red mud is initially acidified. The acidification of 16 red mud causes sodalite and cancrinite phases to dissociate, confirmed by the release of 17 sodium and alumi...

2008
E. Re P. Magnani M. Izzo F. Rizzi S. Senese F. del Campo R. Finotello R. Ferrario

The drill makes use of four rods to obtain the full length drill string which allows to reach a penetration depth of 2 meters. The first rod is the real drill tool with sample collection capability; the other 3 rods are extension rods. The real drill tool is installed at the mandrel during launch, the other three rods are stored in a dedicated rod magazine together with a back up drill tool. Al...

2013
A Dinneen J Clements G Heilpern G Railton

BACKGROUND Various techniques for quadriceps tendon repair have been described with biomechanical studies suggesting greater failure threshold with longitudinally placed drill holes. 1 The current gold standard for repair uses 3–4 sutures 2 passed through parallel longitudinal transpatel-lar bone tunnels. We describe a simple and reproducible technique Figure 1 Acufex ® Director™ Drill Guide po...

Journal: :EURASIP J. Adv. Sig. Proc. 2012
Bing Tu De Li En Lin Miao Ji

Wireless measure while drilling (MWD) transmits data by using mud pulse signal ; the ground decoding system collects the mud pulse signal and then decodes and displays the parameters under the down-hole according to the designed encoding rules and the correct detection and recognition of the ground decoding system towards the received mud pulse signal is one kind of the key technology of MWD. T...

Journal: :J. Field Robotics 2010
Arturo L. Rankin Larry H. Matthies

Detecting mud hazards is a significant challenge to unmanned ground vehicle (UGV) autonomous offroad navigation. A military UGV stuck in a mud body during a mission may need to be sacrificed or rescued, both unattractive options. The Jet Propulsion Laboratory is currently developing a daytime mud detection capability under the U.S. Army Research Laboratory Robotics Collaborative Technology Alli...

Journal: :Proceedings of the VLDB Endowment. International Conference on Very Large Data Bases 2015
Manas Joglekar Hector Garcia-Molina Aditya G. Parameswaran

We present a data exploration system equipped with smart drill-down, a novel operator for interactively exploring a relational table to discover and summarize "interesting" groups of tuples. Each such group of tuples is represented by a rule. For instance, the rule (a, b, ★, 1000) tells us that there are a thousand tuples with value a in the first column and b in the second column (and any valu...

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