reverse catch and drive drill

Ngày tải lên: 16/02/2014, 19:02

Ngày tải lên: 07/03/2014, 10:20

... Rotary Table Top Drive Sysyem: Travel Block → Hook → Swivel → Motor → Pipe Hander Assembly → Drive Shaft → Drill String Kelly & Rotary Table Kelly Assembly bao gồm: • • Kelly Drive Bushing • Floorman ... rôtơ (Explain the purpose and operation of a kelly and rotary table system) • Biết chức hoạt động hệ thống truyền động đỉnh Explain the purpose and operation of a top drive system) • Mô tả tháp ... lan khoan • Semisubmersible Rigs - Giàn khoan nửa nửa chìm • Drill Ships - Tàu khoan LAND RIGS • Most common type of rigs and used to drill wells at onshore locations • Là dạng loại giàn khoan...

Ngày tải lên: 01/04/2014, 09:06

... copies/mL and in whom genotypic analysis was performed (n = 51) Plasma was obtained during 20002001 All subjects harbored subtype-B HIV-1 viruses and provided informed consent Sequencing of the RT and ... treated individuals, ie, patients who had received both PIs and NRTIs, both NNRTIs and NRTIs, or only NRTIs The different regions of RT and PR were analyzed based on the types of drugs employed ... transition confer only low levels of resistance when they appear alone, such as K20R and V32I in PR and D67N and G333A in RT Other mutations resulting from GA transitions may occur rarely, such...

Ngày tải lên: 20/06/2014, 08:20

... OA, and KN carried out the design, operation, and coordination of the study and helped to draft the manuscript PK and PP carried out the biochemistry assay and chondrocyte culture KK, PC, and ... anesthesia and preoperative and postoperative animal care JS and NP participated in pathological and radiological interpretation SL participated in statistical analysis All authors read and approved ... hyaline cartilage D7 and D10 showed repairing tissue around the drilling holes, with velvet surface appearance and significant separation of the repair site (depending on the drilling hole) without...

Ngày tải lên: 09/08/2014, 14:21

... in Uganda J Acquir Immune Defic Syndr 2001, 26(5):495-500 Galluzzo CM: Antiretroviral Resistance Mutations in Untreated Pregnant Women with HIV Infection in Uganda and Rwanda AIDS Research and ... enrolled in PMTCT and received sdNVP, and (v) signed informed consent form Blood samples and demographic information were collected during September to December 2005 Plasma was aliquoted and stored ... of (page number not for citation purposes) AIDS Research and Therapy 2008, 5:13 Reports from Uganda [23,24], Rwanda [24], Mozambique [25] and Zambia [26] indicated a low prevalence of primary mutations...

Ngày tải lên: 10/08/2014, 05:21

... Figure Purification and biophysical characterization of GSTand NusA-HuR (A) Analysis of the expression and purification of GSTHuR by SDS PAGE Lanes and illustrate total protein and total soluble ... solution and the molecular masses of NusA-HuR and NusARRM were determined as 82.2 and 68.9 kDa, respectively These values are within ± 15% of the predicted masses of 99 kDa for NusA-HuR and 73 ... the atomic level and to elucidate the mechanism(s) by which HuR influences HIV-1 reverse transcription activity in vitro, we prepared and characterized four HuR protein constructs and investigated...

Ngày tải lên: 12/08/2014, 23:23

... program EVA/MRC (contract QLKZ-CT1999-00609) and the UK Medical Research Council, and were kindly provided by Dr D Helland and Dr A.M Szilvay (anti-RT) and Dr G Reid (anti-p24) Mouse monoclonal ... phenol/ chloroform, precipitated, and reverse- transcribed using MLV RT and random primers (Invitrogen) Precipitated mRNA was detected by qPCR, using the protocol and primers described by Lal et ... PBS and treated with 500 units of DNase I (Roche Diagnostics) for h at 37°C Total DNA was then extracted, using a QIAamp blood DNA minikit (Qiagen), and early and late RT products (minus-strand...

Ngày tải lên: 13/08/2014, 05:20

... wt, D64E and RK263,4AA virus-infected samples, there were respectively 70%, 72% and 68% of viral DNA associated with nuclear fractions (Fig 5C (upper panel, lanes and 2; and 4; and 10) and 5D) ... lysed and virus composition and trans-incorporation of RT and IN of each virus stock were analyzed by Western blot analysis with anti-IN and anti-HIV antibodies, as described in Materials and Methods ... including Q, C and N regions [17] Interestingly, in regions Q and C, sequences of 211KELQKQITK and 236KGPAKLLWK possess high similarity in terms of numbers and position of lysine residues and therefore,...

Ngày tải lên: 13/08/2014, 09:21

... and Drive Engineering Figure 6.7 Dual-pulley drive arrangements Figure 6.7A Dual-pulley drive on return run Figure 6.7B Dual-pulley drive on return run; regenerative Figure 6.7C Dual-pulley drive ... primary drive on head pulley of conveyor Maximum and Minimum Belt Tensions Maximum and Minimum Belt Tensions For the illustrated common conveyor profiles and drive arrangements, minimum and maximum ... the drive pulley The Te that can be developed is governed by the coefficient of friction existing between the pulley and the belt, wrap, and the values of T1 and T2 The following symbols and...

Ngày tải lên: 15/07/2015, 15:13

... briefly recall the history of reverse mathematics, reverse recursion theory and higher recursion theory, and introduce results in this thesis 1.1 Reverse Mathematics In reverse mathematics, a basic ... and analysis from the view point of reverse mathematics and higher recursion theory Here we consider reverse recursion theory as a part of reverse mathematics and study problems in two areas of ... theorem is true In this sense, models could not be limited to the standard one Reverse mathematics (including reverse recursion theory) and higher recursion theory are typical areas in which the generalization...

Ngày tải lên: 10/09/2015, 09:05

... )] = E ( XY ) − E ( X ) E (Y ) and E(ζ) denotes an expectation of a random variable ζ S (ζ) represents a standard deviation of a random variable ζ Let (X, Y) stands for a set of N data points ... efficiency The band-width (H) is defined as follows: within the 2D projection plane, the projected points of layer H resemble a band, and at any position of the band, there is a band-width (see ... method, i.e., starting with a large value T1 and ∆T1, get subset X1 and ∆X1, which are projected onto P1 to form planar set D1 and ∆D1, and estimate band-width as: R= Max  Min  Pi − Q j   Pi...

Ngày tải lên: 26/09/2015, 11:07

... Diagrams and State Equations 10.6 Solid-State Converters for dc Drive Systems 10.7 One-Quadrant dc/dc Converter Drive 10.8 Two-Quadrant dc/dc Converter Drive 10.9 Four-Quadrant dc/dc Converter Drive ... diagonal matrix and ( f )T = [ f1 f2 ] (1.2-4) where f represents voltage, current, or flux linkage The resistances r1 and r2 and the flux linkages λ1 and λ2 are related to coils and 2, respectively ... = Ll + Lm L22 = (1.2-17) where Ll1 and Ll2 are the leakage inductances and Lm1 and Lm2 the magnetizing inductances of coils and 2, respectively From (1.2-16) and (1.2-17), it follows that the...

Ngày tải lên: 06/06/2016, 23:42

... mm2 for F and G installation methods Now Ecodial calculates and optimises all CSA if the local installation standard allows it v The maximum voltage drop authorised by the IEC60364 standard is ... guide b IEC 364 installation standards Any changes or amendments to these standards will be covered by software updates made available through your product support and/ or update contract You create ... cascading, etc.) Default values can be modified and saved for future projects All this information is used in the subsequent steps of the design process and for the printout of the project file It...

Ngày tải lên: 12/12/2013, 13:15

... RFERENCES Erkorkmaz, K and Kamalazadeh, A., High Bandwidth Control of Ball Screw Drives, Annals of the CIRP vol 55/1, 2006 Ginsberg, J H., Mechanical and Structural Vibrations Theory and Applications, ... D A., Wide bandwidth control of high-speed milling machine of feed drives, PhD dissertation, University of Florida, 1999 Varanasi, K K and Nayfeh, S A, Modeling, Identification, and Control of ... Massachusetts, 2002 Varanasi, K K and Nayfeh, S A., The Dynamics of Lead-Screw Drives: Low-Order Modeling and Experiments, Journal of Dynamic Systems, Measurement, and Control, ASME, 126: 388-396,...

Ngày tải lên: 13/12/2013, 01:16

... connectors to both the F1 and the splitter, running the tests, cutting off the connectors, and re-splicing the F1 to the splitter input This process is both time consuming and costly Benefits of ... two splitter configurations available – pigtail -and- play or plug -and- play Although both offer substantial benefits over straight splicing, the plug -and- play has additional advantages For example, ... a plug -and- play splitter design, the connection is made between the F1 and the splitter simply by plugging the splitter in the backplane of the cabinet Page One argument for the pigtail -and- play...

Ngày tải lên: 21/12/2013, 07:17

... connectors attach to the drives Most power supplies support four IDE drives and two floppy drives The connectors for the floppy drives and for the IDE drives (CD-ROM & hard drive) are different Examine ... the as the “B:\” drive Select the proper ribbon cable for the floppy drive Take one end of the ribbon cable and connect it to the back of the floppy drive Take the other end and connect it to ... of the floppy drives as drive "A:\" Only one floppy drive will be used during this installation A second floppy drive could be connected to the second connector on the ribbon cable and it would...

Ngày tải lên: 21/12/2013, 19:15

... (15) and (17) describe the motion and electrical behavior of the EVA III MATHEMATICAL MODEL OF THE VCS Electromagnetic VCSs are divided into two types: single -drive and multidrive The single -drive ... formulation and for further research of both the phase angle control and switch mode control behavior for the electromagnetic vibratory conveying drive Simulations and experimental results and their ... [19] and [20] The output converter is realized with asymmetric half-bridge, and i.e., dual forward converter and it consists of two IGBT, , on one bridge diagonal and two freewheeling diodes, and...

Ngày tải lên: 03/01/2014, 19:16

... methodology and equipment will be the best fit Installing a plug -and- play architecture will provide very cost-effective bandwidth delivery by reducing the number of splices, splice technicians, and splice ... explains the benefits of implementing plug -and- play techniques, beginning at the CO and working through the OSP and into the subscriber premise Using plug -and- play architectures throughout the FTTP ... specifically designed and tested for use in the OSP environment They are capable of meeting higher performance standards and manufacturing improvements that result in lower insertion and return loss...

Ngày tải lên: 17/01/2014, 11:20

... program will give the option of formatting the drive This will erase anything that is on the drive Since the drive is empty, type “Y” for “Yes” and press Enter to continue Step When the format ... this, type “format C: /s” from the command prompt This tells the format program to make the C drive usable for DOS The “/s” copies system files to the hard drive during formatting, so that it is ... Primary DOS partition At this point, exit FDISK and then restart the computer with the floppy disk still in the drive Note: Make sure to set the Primary drive to “Active” Step Once the computer has...

Ngày tải lên: 18/01/2014, 05:20