joint design and preparation of metals

... in 0.75, 6.5 and 7.1 pos-sibly characterize the presence of Fe atoms and second, Scheme 1 (a) Preparation of: Fe3O4@PVA-SO3H and (b) the synthesis of DHPMs 4a–w in the presence of Fe3O4@PVA-SO3H ... for the synthesis of DHPMs 4a–w 0.05  g of Fe3O4@PVA-SO3H magnetic nanocatalyst was added into a solution consists of 1.50 mmol of an aromatic aldehyde, 1.50  mmol of a ß–ketoester, and 2.00 mmol of urea ... 1.5 mmol of benzaldehyde 2 and 2 mmol of urea 3 in the presence of different catalytic amounts of Fe3O4@PVA-SO3H in EtOH and under reflux conditions Table 1 represents that 0.01 g of catalyst

Ngày tải lên: 29/05/2020, 13:55

... CM squecres; and pe and extent of of suport equa fs bang valuation and mine design: cle range proiesof coal es and associated rock in dil holes ` 2yandmestued sections comple ca androck-tikness ... information fon (1) dats Seaches of ery and cipny file, (2) fell gvlopc ‘app 3 ding, logging and oft geophysics (2) ulisis of staignphic tamework and genesis of aa ‘sing rks, nd (5) ent eon Fo ... ad nian saa of iret tpn ios an 29-20) th S235 hm (© Maniption of the gay sale of Hak and 1 Expanding te gray-scale range or deosy alas (cousesuetcing) Taking ros of tga tớ vinh spec ands nage racing)

Ngày tải lên: 21/02/2014, 08:20

... Trang 1A JOINT ENDEAVOR OF RAND HEALTH AND THE RAND NATIONAL DEFENSE RESEARCH INSTITUTECenter for Military Health Policy Research For More Information Visit RAND at www.rand.orgExplore the RAND Center ... the Office of the Secretary of Defense Approved for public release; distribution unlimited A JOINT ENDEAVOR OF RAND HEALTH AND THE Center for Militar y Health Policy Research Trang 4The R AND ... Administration, and nonprofit organizations NDRI is a federally funded research and development center sponsored by the Office of the Secretary of Defense, the Joint Staff, the Unified Combatant Commands,

Ngày tải lên: 30/03/2014, 05:20

... Coordinate Description of the Pendubot l1 is the length of linkone, lc1 and lc2 are the distances to the center of mass of the respective linksand q1 and q2 are the joint angles of the respective ... 1MECHANICAL DESIGNANDCONTROL OF THE PENDUBOT BYDANIEL JEROME BLOCKB.S., University of Illinois, 1991 Trang 2MECHANICAL DESIGNANDCONTROL OF THE PENDUBOT Daniel Jerome Block, M.S Department of General ... links and q is the vector of joint angle positions Trang 151 2 (3.4) m1 : the total mass of link one l1 : the length of link one (See Figure 3.1) lc1 : the distance to the center of mass of link

Ngày tải lên: 31/03/2014, 23:20

... continuous support of dissertation, for his motivation, enthusiasm and immense knowledge His guidance has been of great value for me in all thetime of researching and writing of my thesis My heartily ... 4.1 Changing of frequency under the adjustment of voltage 29 Trang 11Chapter 1 INTRODUCTION1.1,Overview of VHF frequency band Very high frequency(VHF) is the ITU-designated range of radio frequencyelectromagnetic ... objectives and structure. In this thesis,I will clarify the roles and the need of a information digital transmitter in VHF band Study the function of each block in a transmitter system and especially

Ngày tải lên: 27/05/2014, 20:57

... example of the low-frequency (MMG) and high-fre-quency components of the microphone signal during muscle contraction and sensor movement The RMS of during contraction and sensor movement, and was ... data, and drafted the manuscript TC conceived the study, advised on the design and coordination of the experiments, and edited the manuscript All authors read and approved the final version of the ... generated by the unfused mechani-cal activities of motor units The bulk movement of the muscle and asynchronous activation of fibers at the initi-ation and end of contraction creates a high-amplitude

Ngày tải lên: 19/06/2014, 08:20

... Specification of the measurement model has a major influence on decisions about item and scale design, the appropriate application of statistical validation methods, and the suitability of the resulting ... dimensions; 1) the use of pre-specified conceptual and measurement models; 2) the strength of empirical sup-port for the reliability and validity of the scale(s); 3) the responsiveness of PRO to clinical ... effect of unique aspects of disability rather than assess the true score for a specific type of skill deficit Symptom checklists and symptom severity measures are other examples of PROs which are often

Ngày tải lên: 20/06/2014, 16:20

... of the ACFNC model on delay of the TCP and UDP packets are presented in Figures9(a)and9(b), respectively As the above results show, regardless of the type of traffic or the models, the amount of ... throughout design of the ACFNC model are providing sufficient level of security and accuracy, avoiding unnecessary overheads, and preserving high e ffi-ciency Furthermore, the model is legacy compatible and ... Article Design and Implementation of a Lightweight Security Model to Prevent IEEE 802.11 Wireless DoS Attacks Mina Malekzadeh, Abdul Azim Abdul Ghani, and Shamala Subramaniam Faculty of Computer

Ngày tải lên: 21/06/2014, 05:20

... for power profiling and debugging of sensor nodes It is designed for empirical measurements of energy consumptions accross 5 decades of current draw and facilitates easy score-keeping of energy ... differential amplifier and maps a current of 70 mA through R4 and R5 to 2.5 V on the input of the ADC (the maximum input voltage of ADC4 of the MSP430) 5.2 Environment Emulator: Software We already ... devices are part of the energy Trang 4Energy profile EHApplication profile Average energy generation Average energy consumption t E Figure 3: Energy profile of an energy harvester (EH) and its average

Ngày tải lên: 21/06/2014, 11:20

... performance and that of the standard facto 802.15.4 MAC and the BSN-MAC is portrayed BSN-MAC has been selected as a reference benchmark for its similarity in terms of design as well as structure, and ... here of fixed length (i.e., independent of the number of sensors in the BSN) and contains two new fields for specific energy-saving purposes, the modulation and coding scheme (MCS) and length of ... theoretical analysis of a Distributed Queuing MAC (DQ-MAC) protocol and evaluate its performance under BSN scenarios Please note that the optimization design and evaluation of the here characterized

Ngày tải lên: 21/06/2014, 11:20

... boundaries to increase utilization of ZigBee networks The goal of this paper is to thoroughly describe a testbed design, and release statistics describing ZigBee’s physical and medium access control (MAC) ... installed, and this runs in an open source Mandriva Linux 2008 environment Once the BS and transmitter nodes are in place and activated, the test begins by running BaseStation.java as a console command ... BER= (Number of incorrect bits) (Total number of received bits) PER=  Number of received packets with at least one error + Number of partial packets received  Total number of received packets

Ngày tải lên: 21/06/2014, 18:20

... denoted by· T and· H IM is the identity matrix of sizeM and 0 M is anM-dimensional vector of zeros The Euclidean (2) norm of a vectora is denoted by aand the Frobenius norm of a matrix A is ... LetCdenote the set of complex numbers Scalars are denoted byx Column vectors and matrices are denoted by a and A and their elements are denoted by a i and A i, j respectively Transpose and Hermitian ... transmission of labels (in the form of time and frequency mappings on the radio resource) each of which carry different types of traffic throughout the mesh network according to pre-defined quality-of-service

Ngày tải lên: 21/06/2014, 18:20

... determine state of an eye, authors of [5] propose a method based on combination of projection and the geometry feature of iris and pupil Authors of [6, 7] use the fact that the iris and pupil are ... eyebrow and eyelid, changes of environment light, and the color of eyebrow and eyelash highly affect the accuracy of the proposed algorithm in [10] Algorithms in [11, 15, 16] have a training phase and ... state of an eye In [9], the vertical projection of the image of both eyes is used In [10], horizontal projection image of an eye is used to determine the interval between eyebrows and eyelids and

Ngày tải lên: 21/06/2014, 19:20

... illustrates the design and development of an open toolkit aimed at supporting the design of different solutions for wireless mesh networking by enabling real evaluation, validation, and demonstration ... off-the-shelf hardware components and open-source software and is focused on IEEE 802.11 commodity devices The software toolkit is based on an “open” philosophy and aims at providing the scientific ... host and routers, in a WMN a distinction exists in terms of functionalities between traffic source/termination points and pure relay devices A typical WMN consists of several nodes (routers and

Ngày tải lên: 21/06/2014, 23:20

... determined from the maximum and minimum values of the source operands The process is tedious and requires the designer to bring in his knowledge about the system and specify a set of constraints Some ... mean and standard deviation of the leaf operands are profiled as well as their maximum absolute value Stimuli data is used to generate a scaling of program variables, and hence leaf operands, ... point data types and various casting modes for overflow and quantization handling and some of them also offer data monitoring capabilities during simulation time The simulation speed of these libraries

Ngày tải lên: 22/06/2014, 19:20

... catalyst, and with LiI catalyst for a DOD of 1000 mAh/g and a current density of 2000 mA/g b) Electrochemical curves and c) cyclability and the end of charge and end -of- discharge voltages of CNT ... CoO-CNT and CoO in the Co 2p region and (c) the N 1s region of CoO-CNT, CoO and CNTs 104  Figure 5.8  Frist cycle discharge-charge profiles of (A) CoO-CNT hybrid and (B) CoO particles and ... of the high specific capacity Figure 2.6 (a) First cycle of discharge and charge of the Li–O2 battery with a MWCNTP cathode at 500 mAh/g between 2.3 and 4.6 V and (b) 50 cycles of discharge and...

Ngày tải lên: 09/09/2015, 11:14

... based on the bandgap size and relative position of the valence band and conduction band energy levels of the core and shell components Figure 1.5 Schematic diagram of the different type of core-shell ... PbS and nm PbS/CdS, (c-d) 6nm PbS and nm PbS/CdS, and (e-f) nm PbS and nm PbS/CdS 111 4.2 XRD patterns of (a) nm PbS and nm PbS/CdS; (b) nm PbS and nm PbS/CdS; (c) nm PbS and nm PbS/CdS Standard ... 2.2.7 Preparation of PbS/CdS core-shell nanoparticles 57 2.2.8 Electrochemical preparation of PbS and composite nanowires 59 2.2.9 Preparation of MnO Nanocrystals 60 2.2.10 Preparation of Mn3O4...

Ngày tải lên: 30/09/2015, 06:06

... common in computer applications One of the most difficult workloads for file system designs to handle efficiently is found in of ce and engineering environments Of ce and engineering applications tend ... areas of cost and capacity rather than performance There are two components of disk performance: transfer bandwidth and access time Although both of these factors are improving, the rate of improvement ... us to understand the effects of random access patterns and locality, both of which can be exploited to reduce the cost of cleaning The simulator models a file system as a fixed number of 4-kbyte...

Ngày tải lên: 12/09/2012, 15:05

... any SOFC system, the performance of the INER SOFC system is dependent not only on the design and operating conditions of the fuel cell stack, but also on the design and operating conditions of ... SOFC BOP system (S/C=1.7, O/C=0.3, fuel utilization = 64.2%, electrical conversion efficiency = 44%) Design of SOFC BOP components The BOP components of a SOFC system account for between 50% and ... provided by the anode off-gas given an anode off-gas temperature of less than 650 oC, a cathode off-gas temperature of less than 390 oC, and a flame barrier temperature of less than 700 oC However,...

Ngày tải lên: 05/09/2013, 16:10

... Instead we must compromise and accept a more gradual cutoff between passband and stopband, as well as specify a transition band between the passband and stopband The design is based on magnitude ... Magnitude response of bandpass filter with narrow bandwidth 188 DESIGN AND IMPLEMENTATION OF FIR FILTERS where !a and !b are the lower and upper cut-off frequencies, respectively The bandwidth is the ... range of frequencies that are 184 DESIGN AND IMPLEMENTATION OF FIR FILTERS passed without attenuation is the passband of the filter, and the range of frequencies that is attenuated is the stopband...

Ngày tải lên: 23/10/2013, 22:15