heating and ventilating engineer

... temperature estimations (average deviation ±2.5 K) when annual heating and cooling demand values are close and approximately equal to 30 kWh/m 2 and it is assumed heat pump absence. 5. Conclusion ... geometrical attributes and inf H the factor of opening’s position and air force exposure. Annual heating demand of the building is 33.78 kWh/m 2 whereas cooling demand is 27.34 kWh/m 2 . ... reads the annual TRNSYS heating and cooling load profile so as to determine the values of the peak heating and cooling loads for each month of the year (see Table 2) and their durations. Moreover,...

Ngày tải lên: 05/09/2013, 16:10

Ngày tải lên: 05/09/2013, 16:10

... is required to operate as an engineering department. See Ch. 3 and Appendi- ces A, B, and C for examples of each document type. 8 Developing and Managing Engineering Procedures 1.6.0 ENGINEERING PROCEDURE ... develop and manage engineering proce- dures and their associated documents for all engineering department func- tions (Fig. 1.1). The engineering department is responsible for generating and maintaining ... can be used for developing and managing engineering procedure documentation and for training new employees or retraining existing employees. 2 Developing and Managing Engineering Procedures ISO...

Ngày tải lên: 09/12/2013, 21:15

... be high. ELCTRONICS AND COMMUNICATION ENGINEERING ECADLAB(VHDL) 38 The NAND and NOR gates are called universal gates since with either one the AND and OR functions and NOT can be generated. ... AND COMMUNICATION ENGINEERING ECADLAB(VHDL) 21 The above window will be appeared and press Finish button ELCTRONICS AND COMMUNICATION ENGINEERING ECADLAB(VHDL) 40 AND ... A' NAND gate This is a NOT -AND gate which is equal to an AND gate followed by a NOT gate. The output of a NAND gate is high if any of its inputs are low. The symbol is an AND gate with...

Ngày tải lên: 15/12/2013, 07:15

Ngày tải lên: 26/12/2013, 01:18

... difficulties in the area of grammar Item 5b (Understanding and using verb tenses and forms) and 5e (Understanding the relationship between clauses of compound and complex sentences) both had the same means ... “difficult” and “very difficult” for them to understand and use verb tenses and forms    experience with each other. They can share and discuss their lesson plans to find the best activities and ... Mechanical Engineering, Mechanical Dynamic Engineering, Electrical and Electronics Engineering and Information Technology. The students are provided with a lot of general educational subjects and...

Ngày tải lên: 29/01/2014, 10:33

... forecasts, signals, and data. In doing so, forecasts and methodologies can be easily compared and measured for effectiveness and accuracy. Openness and persistence are synergistic: Open and persistent ... levels, and scalability; detect outlier and weak signals; and aid with visualization. • System attributes. The system should be global, persistent, open, scalable and flexible, with consistent and ... have changed to scientific research and technology development. During the 1970s and 1980s, Ireland and Singapore were the manufacturing centers of Europe and Asia, respectively. Today, they...

Ngày tải lên: 12/02/2014, 19:20

... geological engineering, hydrological engineering, and Earth-related parts of petro- leum engineering and mining engineering. The rapid expan- sion of nanotechnology, biotechnology, and information technology ... geological and geotechnical engineering com- munity as a whole, and other interested parties, including Congress, federal and state agencies, industry, academia, and other stakeholders in geoengineering ... intellectual sense) and to refine and improve our understanding and methods. We are more tuned to what we still do not know and cannot yet do versus reflecting on how far we have come and how much we...

Ngày tải lên: 12/02/2014, 19:20

... possesses the desired stiffness and strength. When heated, this structure does not exhibit viscoelastic flow and, being both chemically and physically stable, remains unal- tered and hard until the decomposition ... very low value and the resulting electronic configuration is very stable. Thus, helium, neon, argon and krypton are asso- ciated with closed shells and, being inherently stable and chemically ... Extended dislocations and stacking faults in close-packed crystals 99 4.5 Volume defects 104 4.5.1 Void formation and annealing 104 4.5.2 Irradiation and voiding 104 4.5.3 Voiding and fracture 104 4.6...

Ngày tải lên: 13/02/2014, 20:20

... 1.4 and 1.5, where the temperature ratio equations for F 1 and F 2 were adopted. Preface Heating and Water Services Design in Buildings has been written following 13 years in the industry and ... comfort; the U and Y values are each reduced, thus saving energy; preheat and cooldown times are reduced; and the wall is behaving like a lightweight structure. 10. Internal walls and intermediate ... EAT/LAT and air change rate of the selected heaters. 4. Undertake a comparison of the total heater output and the boosted plant energy output, and make a decision on the final number and type...

Ngày tải lên: 08/03/2014, 17:20

... also called general recombination. Chapter 14 Genetic Recombination and Genetic Engineering The biochemistry and molecular biology department of CMU 5´ 3´ 5´ 5´ 5´ 3´ 3´ 3´ 5´ 5´ 5´ 5´ 3´ 3´ 3´ 3´ 5´ 3´ 5´ 5´ 5´ 3´ 3´ 3´ 5´ 5´ 5´ 5´ 3´ 3´ 3´ 3´ 5´ 3´ 5´ 5´ 5´ 3´ 3´ 3´ ... repeat sequence, which means the nucleotide sequence in 5′to 3′direction is the same in both strands. 　 Transformation experiment of Streptococcus pneumoniae 　 Transduction 　 　 §1.1 ... occurs at a specific DNA sequence. • The first example was found in the integration between λ DNA and E. coli DNA. §1.5 Site-specific Recombination 　 Plasmid Palindrome • Palindrome is also...

Ngày tải lên: 13/03/2014, 19:25

... editor, a command line for running scripts, archive support, and a multitude of features that make common tasks easy. FAR and Total Commander File and Archive Manager (FAR) and Total Commander are ... closest friends LaWanda Tetteh and Gleb Tulukin for giving me support and encouragement when I needed it. Special credit goes to Amie Koker for being patient and understanding and to Tricia Riviere ... copy- rights, reverse engineering, and patent violations. Companies and individuals have lost millions of dollars and sometimes reputations as well. Although the laws are complex and the license agreements...

Ngày tải lên: 20/03/2014, 15:39

... standardized according to the information that was transferred across the network. The original transfer of information was mostly text‐based. As the internet expanded and technologyevolved,otherformsofcommunication began ... are restated for convenience and emphasis. These security attributes are confidentiality,integrity,privacy, and availability.  Confidentiality and integrity still hold to ... security attributes. Table 1 shows the attack methods and solutions.  Table1:AttackMethods and SecurityTechnology[8]   Common attack methods and the security technology will be briefly...

Ngày tải lên: 22/03/2014, 15:21

... Ltd 20.3Dynamicmeasurements 20.3.1Measurementofvelocityandacceleration 20.3.2Gait 20.3.3Measurementoflimbposition 20.4Problems 20.4.1Shortquestions 20.4.2Longerquestions 21IONIZINGRADIATION:RADIOTHERAPY 21.1Radiotherapy:introductionandobjectives 21.2Thegenerationofionizingradiation:treatmentmachines 21.2.1Theproductionofx-rays 21.2.2Thelinearaccelerator 21.2.3Tele-isotopeunits 21.2.4Multi-sourceunits 21.2.5Beamcollimators 21.2.6Treatmentrooms 21.3Dosemeasurementandqualityassurance 21.3.1Dose-ratemonitoring 21.3.2Isodosemeasurement 21.4Treatmentplanningandsimulation 21.4.1Linearacceleratorplanning 21.4.2Conformaltechniques 21.4.3Simulation 21.5Positioningthepatient 21.5.1Patientshells 21.5.2Beamdirectiondevices 21.6Theuseofsealedradiationsources 21.6.1Radiationdosefromlinesources 21.6.2Dosimetry 21.6.3Handlingandstoringsealedsources 21.7Practical 21.7.1Absorptionofgammaradiation 21.8Problems 21.8.1Shortquestions 21.8.2Longerquestions 22SAFETY-CRITICALSYSTEMSANDENGINEERINGDESIGN:CARDIACAND BLOOD-RELATEDDEVICES 22.1Introductionandobjectives 22.2Cardiacelectricalsystems 22.2.1Cardiacpacemakers 22.2.2Electromagneticcompatibility 22.2.3Defibrillators 22.3Mechanicalandelectromechanicalsystems 22.3.1Artificialheartvalves 22.3.2Cardiopulmonarybypass 22.3.3Haemodialysis,bloodpurificationsystems 22.3.4Practicalexperiments Copyright ... Ltd 3.4.5Measurementofhearing 3.5Vision 3.5.1Physicsoflight 3.5.2Anatomyandphysiologyoftheeye 3.5.3Intensityoflight 3.5.4Limitsofvision 3.5.5Colourvision 3.6Psychophysics 3.6.1WeberandFechnerlaws 3.6.2Powerlaw 3.7Problems 3.7.1Shortquestions 3.7.2Longerquestions 4BIOCOMPATIBILITYANDTISSUEDAMAGE 4.1Introductionandobjectives 4.1.1Basiccellstructure 4.2Biomaterialsandbiocompatibility 4.2.1Usesofbiomaterials 4.2.2Selectionofmaterials 4.2.3Typesofbiomaterialsandtheirproperties 4.3Materialresponsetothebiologicalenvironment 4.3.1Metals 4.3.2Polymersandceramics 4.4Tissueresponsetothebiomaterial 4.4.1Thelocaltissueresponse 4.4.2Immunologicaleffects 4.4.3Carcinogenicity 4.4.4Biomechanicalcompatibility 4.5Assessmentofbiocompatibility 4.5.1Invitromodels 4.5.2Invivomodelsandclinicaltrials 4.6Problems 4.6.1Shortquestions 4.6.2Longerquestions 5IONIZINGRADIATION:DOSEANDEXPOSURE—MEASUREMENTS,STANDARDSAND PROTECTION 5.1Introductionandobjectives 5.2Absorption,scatteringandattenuationofgamma-rays 5.2.1Photoelectricabsorption 5.2.2Comptoneffect 5.2.3Pairproduction 5.2.4Energyspectra 5.2.5Inversesquarelawattenuation 5.3Biologicaleffectsandprotectionfromthem Copyright ... Ltd NOTESTOREADERS Medicalphysicsandbiomedicalengineeringcoversaverywiderangeofsubjects,notallofwhichareincluded inthisbook.However,wehaveattemptedtocoverthemainsubjectareassuchthatthematerialissuitable forphysicalscienceandengineeringstudentsatbothgraduateandpostgraduatelevelswhohaveaninterest infollowingacareereitherinhealthcareorinrelatedresearch. Ourintentionhasbeentopresentboththescientificbasisandthepracticalapplicationofeachsubject area.Forexample,Chapter3coversthephysicsofhearingandChapter15coversthepracticalapplication ofthisinaudiology.ThebookthusfallsbroadlyintotwopartswiththebreakfollowingChapter14.Our intentionhasbeenthatthematerialshouldbefollowedintheorderofthechaptersasthisgivesabroadview ofthesubject.Inmanycasesonechapterbuildsupontechniquesthathavebeenintroducedinearlierchapters. However,weappreciatethatstudentsmaywishtostudyselectedsubjectsandinthiscasewilljustreadthe chapterscoveringtheintroductoryscienceandthentheapplicationofspecificsubjects.Cross-referencing hasbeenusedtoshowwhereearliermaterialmaybeneededtounderstandaparticularsection. Thepreviousbookwasintendedmainlyfortechnicalstaffandasabroadintroductorytextforgraduates. However,wehavenowaddedmaterialatahigherlevel,appropriateforpostgraduatesandforthoseentering aresearchprogrammeinmedicalphysicsandbiomedicalengineering.Somesectionsofthebookdoassume adegreelevelbackgroundinthemathematicsneededinphysicsandengineering.Theintroductiontoeach chapterdescribesthelevelofmaterialtobepresentedandreadersshouldusethisindecidingwhichsections are...

Ngày tải lên: 22/03/2014, 22:20

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Ngày tải lên: 31/03/2014, 15:09

Ngày tải lên: 01/04/2014, 10:12

Ngày tải lên: 01/04/2014, 10:51