elasticity hooke s law and poisson s ratio
Mechanics of Materials
... stresses allowable stress (or working stress) critical stress for a column (scr ϭ Pcr /A) proportional-limit stress residual stress thermal stress ultimate stress; yield stress shear stress shear ... various materials, such as the modulus of elasticity (E) and yield (sy) and ultimate (su) stresses, from plots of stress (s) versus strain (e) We will also plot shear stress (t) versus shear strain ... Materials) 289 Design of Beams for Bending Stresses 302 Shear Stresses in Beams of Rectangular Cross Section 311 Shear Stresses in Beams of Circular Cross Section 321 Shear Stresses in the Webs of...
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THE PRACTICAL REFERENCE GUIDE for WELDING INSPECTION MANAGEMENTTed visual inspection of pressure vessels and pressure piping (1)
... COMPONENTS Subsection NCA-General Requirements for Division 1and Division Division Subsection NB Class Components Subsection NC Class Components Subsection ND Class Components Subsection NE Class MC ... particular use The publisher is not responsible for loss or damage resulting from use of this publication This document is not a consensus standard Users should refer to the applicable standards for ... several miles of process piping of various diameters and alloys, connecting pressure vessel to pressure vessel, and often placed into pipe bridges above ground level Pressure vessels are often...
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THE PRACTICAL REFERENCE GUIDE for WELDING INSPECTION MANAGEMENTTed visual inspection of pressure vessels and pressure piping
... COMPONENTS Subsection NCA-General Requirements for Division 1and Division Division Subsection NB Class Components Subsection NC Class Components Subsection ND Class Components Subsection NE Class MC ... particular use The publisher is not responsible for loss or damage resulting from use of this publication This document is not a consensus standard Users should refer to the applicable standards for ... several miles of process piping of various diameters and alloys, connecting pressure vessel to pressure vessel, and often placed into pipe bridges above ground level Pressure vessels are often...
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DESIGN, INSPECTION, AND CERTIFICATION OF PRESSURE VESSELS AND PRESSURIZED SYSTEMS pot
... NASA Safety Policy for Pressure Vessels and Pressurized Systems f ANSI/AIAA S- 080-1998, Space Systems, Metallic Pressure Vessels, Pressurized Structures, and Pressure Components g ANSI/AIAA S- 081-2000, ... ANSI/AIAA S- 080, Space Systems⎯Metallic Pressure Vessels, Pressurized Structures and Pressure Components, or ANSI/AIAA S- 081, Space Systems⎯Composite Overwrapped Pressure Vessels, or equivalent as approved ... analyses to address the stresses, moments, and reactions imposed by hydrostatic testing; service pressure and temperature variations; shock loads; and vibration loads k Pressure System Design Review...
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Tài liệu Rooftops to Rivers II: Green strategies for controlling stormwater and combined sewer overflows ppt
... carried with it Two systems are currently used: separate stormwater sewer systems and combined sewer systems Separate stormwater sewer systems collect only stormwater and transmit it with little ... zinc.”30 Pet waste, wastewater, collection systems Metals Separate Stormwater Sewer Systems Source Lawns, gardens, atmospheric deposition Oil and grease Automobiles Oxygen depleted substances Organic ... challenges from sea level rise; that Southwest cities such as Phoenix face water shortages; and that Midwest cities such as Chicago and St Louis, along with Northeast cities such as New York, should...
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Effectiveness of PRECEDE model for health education on changes and level of control of HbA1c, blood pressure, lipids, and body mass index in patients with type 2 diabetes mellitus docx
... create a list of skills and instruments in favour and against to the behavior change Session Session (Visits or 8) (Visits or 9) Reinforcing factors: The patient has to discover: the response of key ... These are objective factors such as patient s skills or availability of resources Finally, subjective Reinforcing factors (what the patient says after his/her behavior) and objectives (response ... month 1, were baseline visits; and to 9, were follow-up visits, every months) Baseline data were collected during visits and 1, and during visits to assigned models were applied and the data collected...
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Applications and Amendments to Facility Operating Licenses and Combined Licenses Involving No Significant Hazards Considerations pdf
... used to support the proposed TS end state and associated restrictions The NRC staff finds that the risk insights support the conclusions of the specific TS assessments Therefore, the probability ... significantly impact SSCs important to safety Oconee 's licensing basis does not assume a design basis event occurs simultaneously with a seismic event The proposed change does not significantly impact ... comment submissions that you not want to be publicly disclosed The NRC posts all comment submissions at http://www.regulations.gov as well as entering the comment submissions into ADAMS, and the...
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ROOFTOPS TO RIVERS: Green Strategies for Controlling Stormwater and Combined Sewer Overflows pot
... ENVIRONMENTAL SERVICES stormwater sewer systems and combined sewer systems Separate stormwater sewer systems collect only stormwater and transmit it with little or no treatment to a receiving stream, ... Pollutants Pollutant Bacteria Pet waste, wastewater collection systems Metals Automobiles, roof shingles Nutrients Separate Stormwater Sewer Systems The large quantities of stormwater that wash across ... 32-acre sub-basin in the Pipers Creek Watershed The project used both SEA Street designs and cascade systems The north-south streets in the project area were reconstructed using the SEA Street design...
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Elasto plastic stress and strain behaviour at notch roots under monotonic and cyclic loadings
... results presented are discussed and summarized NOTCH STRESS–STRAIN MODELS The well-known and frequently used models for notch stress and strain analyses are the linear rule, Neuber s rule and ... stress is below the yield stress, the Ellyin and Kujawski equation is the same as Glinka s equation for a plane stress condition Ellyin and Kujawski reported that the predicted stresses and strains ... notches and predicts elastic stress and strain distributions for semicircular and U-shaped notches In comparison with the results from a plane stress finite element analysis, the notch root strain...
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Báo cáo khoa học: "Molecular analysis of hprt mutation in B6C3F1 mice exposed to ozone alone and combined treatment of 4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone and/or dibutyl phthalate for 32 and 52 weeks" ppsx
... Studies examining the effects of air pollutants often use a single compound However, because actual exposures involve more than one chemical, it is necessary to assess responses following the exposures ... aging processes Sci World J 2001,1 (Suppl.3), 76 Bridges BA Spontaneous mutation: Some conceptual difficulties Mutat Res 1994, 304, 13-17 Cariello NF, Douglas GR, Soussi T Databases and software ... control versus various treated groups The statistical analysis for hprt mutation spectra was performed using Cariello s method [6] Results Test material-associated mutagenicity Ozone, NNK, DBP, and...
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Báo cáo khoa học: "Renal carcinoma infiltrating inferior vena cava and combined valvular heart disease - one-stage uro-cardiological procedure: a case report" potx
... Hurst JL, Shockey KS, Tribble MD, Kron ID: Simultaneous coronary artery byppass grafting and abdominal aneurysm repair decreases stay and costs Ann Thorac Surg 1998, 66:1273-1276 Matsuzaki K, Sakai ... concerns the fact that the oncologic treatment was not delayed despite severe heart disease There is also an advantage in avoiding second operation and hence anesthesia Essential disadvantages, which ... magnesium Cardiac part of operation was performed first Chest was open through median sternotomy and cardiopulmonary bypass (CPB) was established by cannulation of both venae cavae and ascending...
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Pressure Vessels Guide Book ppt
... Boiler and Pressure Vessel Laws Society issued a Synopsis of Boiler and Pressure Vessel Laws, Rules, and Regulations, the publishing of which has been assumed by the National Board The book gives ... Components Subsection NCA: General Requirements for Divisions and Division Subsection NB: Class Components Subsection NC: Class Components Subsection ND: Class Components Subsection NE: Class MC ... only applies to seamless vessels, vessel sections, and heads of Code Par UW-12(d) When pressure-welding processes are to be utilized in the production of Code pressure vessels, such as flash induction...
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Báo cáo y học: " Comparison of ankle-brachial pressure index and pulse wave velocity as markers of cognitive function in a community-dwelling population" potx
... logistic regression analysis was applied to assess the usefulness of the ABI and ba-PWV measurements as markers of cognitive impairment both crude and adjusted conditions for confounding factors ... community-dwelling population, and MMSE was used to assess cognitive status The ABI and PWV were measured as indicators of arterial structure and function The present study is considered as the report to obtain ... changes in the arterial vessels, several mechanisms may explain an association between atherosclerosis and dementia One explanation is that sub-clinical cerebrovascular disease, such as silent...
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Báo cáo y học: " Effectiveness of psychotherapeutic, pharmacological, and combined treatments for chronic depression: a systematic review (METACHRON)" ppsx
... target disorders are of at least two years’ duration The diagnosis of depression needs to rely on a formal classification system, such as the International Classification of Diseases (ICD) [24] ... Diagnostic and Statistical Manual of Mental Disorders (DSM) [25] Studies focusing exclusively on chronically depressed patients with concurrent personality disorder, substance abuse, dementia, psychotic ... to HDRS over MADRS and MADRS over CGI If none of these measures were used, other psychometrically sound observer-rated depression scales may be used to define response If no observer-rated scale...
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Báo cáo khoa học: "Associations among systemic blood pressure, microalbuminuria and albuminuria in dogs affected with pituitary- and adrenal-dependent hyperadrenocorticism" pps
... using commercially available software (SPSS, version 13.0, SSPS Inc, U .S. A.) Continuous data are presented as mean ± SD Statistical significance was determined by a p value < 0.05 Results Systemic ... cortisol concentrations and systemic blood pressure was analyzed by use of linear Table Systemic blood pressure (SBP) and status of urine albumin excretion in clinically healthy dogs and dogs affected ... Comparison of systemic blood pressure, presences of microalbuminuria/albuminuria and results of ACTH stimulation test between dogs affected with PDH and ADH The mean systemic blood pressure was significantly...
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Báo cáo khoa học: "Severe brain injury ICU outcomes are associated with Cranial-Arterial Pressure Index and noninvasive Bispectral Index and transcranial oxygen saturation: a prospective, preliminary study" pdf
... interfere with BIS or StcO2 values Discharge GCS score status was included, as one of several measures, to assess ICU outcomes Admission GCS score was to for all patients, indicating severe neurological ... higher BIS and StcO2 values BIS and StcO2 are inversely related to ICP and CAP Index and directly associated with CPP BIS and StcO2 have a positive relationship The data suggest that BIS, StcO2, ... noninvasive, A-2000 Bispectral Index XP Monitoring System (Aspect Medical Systems, Inc., Newton, MA, USA) continuously processes raw EEG signals to produce a single number, or BIS BIS was designed...
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Báo cáo y học: " Determination of the threshold of cardiac troponin I associated with an adverse postoperative outcome after cardiac surgery: a comparative study between coronary artery bypass graft, valve surgery, and combined cardiac surgery" ppt
... and the observed data) [20] P < 0.05 was considered significant and all P values were two-tailed Statistical analyses were performed using NCSS 2001 software (Statistical Solutions Ltd) and SPSS ... Ltd) and SPSS 13.0 software (SPSS Corporation, Chicago, IL, USA) Randomization was obtained using either the Excel random function (Microsoft, Seattle, WA, USA) or that of the SPSS software Page ... analysis These results suggest that the 'basal release' of cTnI in cardiac surgery depends on the type of surgery and is increased in complex and prolonged surgical procedures A more extensive...
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Báo cáo y học: "Regional lung aeration and ventilation during pressure support and biphasic positive airway pressure ventilation in experimental lung injury" potx
... way pressure during BIPAP+SBmean; BIPAP+SBmean: biphasic positive airway pressure with non-assisted spontaneous breathing; BIPAP+SBspont: non-assisted spontaneous breathing during BIPAP+SBmean; ... present study differs from previous investigations on BIPAP+SBmean and PSV [6,9-11] in that: CTdyn was used to assess regional aeration during up to 60 seconds; no breath holds at end-expiration ... carotid and pulmonary arteries Arterial and mixed venous blood samples were analyzed Airway flow, airway pressure (Paw) and esophageal pressure were measured using calibrated flow and pressure sensors...
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Báo cáo y học: " Pulse-pressure variation and hemodynamic response in patients with elevated pulmonary artery pressure: a clinical study" ppt
... response to volume challenge were separately analyzed for the responders and nonresponders Statistics To assess differences in proportions between groups of patients, Fisher 's Exact test was used ... volume responsiveness Furthermore, clinical use of PPV to predict volume responsiveness may misleadingly suggest volume responsiveness when increased pulmonary artery pressure compromises right ... increase (P, not significant) Discussion The main finding of this study was the lack of association between PPV and volume responsiveness in patients with increased pulmonary artery pressure This...
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