effect of cyclic strain rate on pore pressure measurement
An investigation on the root system of mangroves and its influence on current flow
Ngày tải lên :
09/09/2015, 11:10
... coefficient in fluid momentum equation 𝛿 deflection of mangrove roots/current boundary layer thickness 𝜀 engineering strain/ dissipation rate of turbulence 𝜅 von Karman’s constant=0.4 𝜎 tensile stress/wave ... formulations which were developed can be subdivided into two main methods: (i) concept of a singleprofile approach, and (ii) concept of segmented profiles approach The feature of the segmented profile ... fluctuation in z-direction x coordinate direction of the current y direction orthogonal to current and parallel to the flume bottom z elevation from the flume bed z0 roughness length from the log-profile...
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Process technology equipment and systems chapter 1 & 2
Ngày tải lên :
15/08/2013, 07:50
... pressure and full lift pressure on a relief valve Actuator—a device that controls the position of the flow-control element on a control valve by automatically adjusting the position of the valve stem ... cengage.com/permissions Further permissions questions can be emailed to permissionrequest@cengage.com Production Director: Wendy Troeger Production Manager: Mark Bernard Library of Congress Control Number: ... gas service ➞ Flow direction Additional information on size and pressure rating is sometimes found on a plate attached to the handwheel Gate Valves One of the more common valves found in industry...
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Process technology equipment and systems chapter 3 & 4
Ngày tải lên :
16/08/2013, 15:29
... support the roof The area of the pontoon will vary between 25% and 55% of the roof area The pontoon roof is the most common type of floating roof in use today The double-deck floating roof has a double ... factors may cause or contribute to deterioration of equipment Familiarity with operating conditions and knowledge of the materials of construction are essential A study of conditions and materials ... Cone-Roof Tanks: Low to Medium Pressure A cone-roof tank has a fixed, slightly conical roof, one or more inside support columns, and a flat bottom Cone-roof tanks are used to store low-vapor pressure...
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Process technology equipment and systems chapter 5 & 6
Ngày tải lên :
19/08/2013, 10:47
... of a multistage compressor Centrifugal compressor—uses centrifugal force to accelerate gas and convert energy to pressure Compression ratio—the ratio of discharge pressure (psia) to suction pressure ... flows to surface condensers Condensing turbines operate at vacuum pressure In noncondensing turbines, exhaust steam is utilized in low -pressure steam applications In reaction turbines, steam ... it is converted to steam and escapes through the nozzles, rotating the globe The globe rotates because of the effects of the escaping steam The rotation of the globe demonstrates Newton’s third...
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Process technology equipment and systems chapter 7 & 8
Ngày tải lên :
20/08/2013, 10:39
... Conduction—the means of heat transfer through a solid, nonporous material resulting from molecular vibration Conduction can also occur between closely packed molecules Convection—the means of ... conduction, convection, and radiant heat transfer (Figure 7.2) In the petrochemical, refinery, and laboratory environments, these methods need to be understood well A combination of conduction ... not considerations Vertical and Horizontal Thermosyphon Reboilers A thermosyphon reboiler is a fixed head, single-pass heat exchanger connected to the side of a distillation column Thermosyphon...
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Process technology equipment and systems chapter 9, 10 & 11
Ngày tải lên :
21/08/2013, 10:47
... radiant and convection section Bridgewall—sloping section inside a furnace that transitions between the radiant section and convection section; or the section of refractory that separates fireboxes ... Section The bridgewall section is the sloping section of the upper furnace that connects the radiant section to the convection section It is designed to accelerate the flow of hot combustion gases ... Steam As long as steam and water are in contact with each other, the steam is saturated This saturated condition means that for every temperature of water, a corresponding pressure of steam exists...
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Process technology equipment and systems chapter 12&13
Ngày tải lên :
23/08/2013, 14:30
... Major Process Manual Operated Valve Pneumatic Plug Globe Valve EQUIPMENT CONT Nonconnecting Line Nonconnecting Line Jacketed or Double Containment Vacuum Pump Horizontal Software or Data Link Vertical ... (Louvers Optional) C E Drum APPROVED Dome Roof Tank Sphere 10-6-10 DATE GENERAL LEGEND Condenser DISTILLATION UNIT Cone Roof Tank Internal Floating Roof Tank DRAWING NUMBER OO6543 REVISION PAGE OF 30 ... instrument and the control room panel This includes instrument air lines, wiring connections at field junction boxes, and control room panels and front connections Electrical One-Line Diagrams...
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Process technology equipment and systems chapter 14&15
Ngày tải lên :
23/08/2013, 14:47
... Obviously, you will soon have an uncontrollable reaction and, possibly, an explosion Pressure The effect of pressure on a reaction cannot be generalized as easily as the effect of temperature In ... higher concentration of methanol in the vapor is based on Raoult’s law, which states that the partial pressure of component is the product of the vapor pressure and the mole fraction of the component ... considered separately in pressure calculations The following list identifies only a few of the considerations that need to be reviewed for pressure calculations on a tower • The liquid level on...
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Process technology equipment and systems chapter 16&17
Ngày tải lên :
27/08/2013, 07:28
... generally two types of fixed beds Single-bed systems remove only one type of ions, either cations or anions Two-bed systems remove both cations and anions The type of bed used depends on the process ... concentration, the amount of mixing or lack of mixing, the rate of cooling or evaporation, contamination, and the presence of smaller crystals The crystallization process can be either batch or continuous ... crystallization process is the opposite of the distillation process It uses refrigeration instead of heat to separate the various fractions Economic considerations determine whether refrigeration or...
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CO2e emissions from HVAC equipment and lifetime operation for common U.S. building types
Ngày tải lên :
05/09/2013, 15:28
... based on building vintage (pre-1980, post-1980 and new construction) This study focused only on new building construction, its energy consumption and corresponding GHG emissions Since the focus of ... source emissions The rate of GHG emissions is different within these three large Interconnection regions, due to the different factors of emission within the region Over 70 percent of the electricity ... emissions Table contains the eGRID pre-combustion and combustion emissions factors, and the percentage of losses during transmission and distribution for each interconnect region Table shows the on- site...
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Reagents and instrumentation
Ngày tải lên :
25/10/2013, 22:20
... the number of errors; alteration of reaction conditions, including modifying the buffer and dNTP concentrations, can significantly improve the fidelity (12) Optimization of PCR conditions is covered ... determine the concentration of an oligonucleotide sample To calculate the concentration of an oligonucleotide the formula A260 = εcl can be used ● A260 is the absorbance at 260 nm of an aliquot of the ... amplify these for applications such as analysis of gene expression levels, construction of cDNA libraries from limited amounts of tissue or detection of low levels of a transcript (Chapter 8)...
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Introduction to RF Equipment and System Design
Ngày tải lên :
05/11/2013, 12:15
... current are no longer only functions of time but also depend on the physical location of observation Therefore, transmission line analysis with the Smith chart and related operations are essential ... think of NF as an independent parameter, the effects of which can be used to tune the performance of a system As stated in conjunction to Figure 2.1, radar design often uses the convention of noise ... A first approximation is to consider the often unavoidable pieces of RF transmission lines as an extension of the propagation path whereby the two major effects are attenuation and group delay...
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asg 7 safety of equipment and personnel
Ngày tải lên :
15/02/2014, 08:44
... Safety-related controllers Examples of solution The controller governs the following functions Type of controller XPS family Single-function Protection of persons by protective barrier Positioning movement ... process of risk assessment for a machine A Fig 16 Assessment process 171 7 Personnal and machines safety 7.4 7.4 Concept of safe operation Concept of safe operation Safe operation is the practice of ... Relays, contactors and switches usually consist of a set of contacts For safety applications, the position of every safety related contact in the circuit must be known in all possible switching conditions...
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Tài liệu ARKANSAS STATE HIGHWAY AND TRANSPORTATION DEPARTMENT EQUIPMENT AND PROCUREMENT DIVISION BID INVITATION doc
Ngày tải lên :
15/02/2014, 13:20
... Certificates of Authority as acceptable sureties on Federal Bonds and as acceptable reinsuring companies Any excess between the face amount of the bond and the underwriting limitation of the bonding ... commission, percentage, brokerage, or contingent fee, except for retention of bona fide employees or bona fide established commercial selling agencies maintained by the contractor for the purpose of ... Applicable bonds may be forfeited 14 ETHICS: “It shall be a breach of ethical standards for a person to be retained, or to retain a person, to solicit or secure a State contract upon an agreement of understanding...
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Tài liệu Balance Billing for Medical Equipment and Supplies docx
Ngày tải lên :
21/02/2014, 09:20
... approaches to correct them Office of Evaluation and Inspections The Office of Evaluation and Inspections (OEI) is one of several components of the Office of Inspector General It conducts short-term management ... program evaluations (called inspections) that focus on issues of concern to the Department, the Congress, and the public The inspection reports provide findings and recommendations on the efficiency, ... submitted 66 percent of DMEPOS claims, although only percent of all claims were non-assigned The rate of non-participation has increased each year since 1996 when 55 percent of suppliers did not...
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Tài liệu Safeguarding Equipment and Protecting Employees from Amputations docx
Ngày tải lên :
21/02/2014, 09:20
... installation of additional safeguarding when two-hand controls are used on part-revolution shears, based on the nature of the shearing operation This national consensus standard specifies the use of ... power-transmission apparatus Sources of Additional Information • OSHA Instruction CPL 03-00-002, National Emphasis Program on Amputations • OSHA Publication 3067, Concepts and Techniques of Machine ... production, to allow the insertion of small-piece work, or to allow better viewing of the operation Two-hand trips/controls bridged or tied-down to allow initiation of the press cycle using only one...
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