response of structures in which time change

prediction of creep, shrinkage, and temperature effects in concrete structures

prediction of creep, shrinkage, and temperature effects in concrete structures

... strain in in. /in or mm/mm at any time ultimate (in time) shrinkage strain in inc. /in or mm/mm relative humidity in percent prestress loss due to elastic shortening in percent of initial tensioning ... moment of inertia = Ie for each one of the negative moment end zones of a beam = moment of inertia of gross section, neglecting the steel = moment of inertia of reinforcing steel = moment of inertia ... coefficient defined as ratio of creep strain to initial strain, (es& is the ultimate shrinkage strain, and t is the time after loading in Eq (2-6) and time from the end of the initial curing in Eq (2-7)...

Ngày tải lên: 24/10/2014, 16:03

47 481 0
In vitro studies on the color stability and masking ability of composite cores and the influence of posts and cores on the shades of all ceramic systems

In vitro studies on the color stability and masking ability of composite cores and the influence of posts and cores on the shades of all ceramic systems

... light-cured composite resins was reported to change over time due to extrinsic or intrinsic discoloration46, 85-87 Extrinsic discoloration may result from surface staining, marginal staining due to microleakage ... rate of 94% in a five year clinical study27 This crown system is composed of a densely sintered, high-purity aluminum oxide coping that is combined with the low-fusing AllCeram veneering porcelain17 ... an increase in scattering within the material Light scattering in a material is the result of scattering centers that cause the incident light to be scattered in all directions The scattering...

Ngày tải lên: 09/10/2015, 11:24

108 462 0
Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles " potx

Báo cáo "Determining thermal expansion coefficients of three-phase fiber composite material reinforced by spherical particles " potx

... coefficients of two – phase composite material reinforced by fibres Continuing the way in section 2.1 but applying composite cylinder model, authors in [7] have brought out expressions determining thermal ... publishing House of Science and Engineering, Hanoi, 2002 [2] Nguyen Dinh Duc, Nguyen Le Hai, Determining mechanics constants of three-phase composite material of spherical particles, The essay of ... itself when increasing volume fraction of glass fibre phase This is meaningful in manufacturing materials impervious to heat and reducing the prices of products (because the cost of particles...

Ngày tải lên: 28/03/2014, 13:20

9 280 0
DEFLECTION OF BEAMS

DEFLECTION OF BEAMS

... 13.1, 13.16 Deflections of beams due to shear In our simple theory of bending of beams, we assumed that plane sections remain plane during bendmg The effect of shearing forces in a beam is to distort ... equation (13.3), expressing the radius of curvature R in terms of v, is only true if the displacement v is small Figure 13.5 Distortion of a beam in pure bending Elastic bending of straight beams ... Elastic bending of straight beams Figure 13.3 Curvature induced by sagging bending moment 297 Figure 13.4 Deflected form of a beam in pure bending Where the beam is loaded on its axis of shear centres,...

Ngày tải lên: 08/04/2014, 11:27

44 392 0
báo cáo hóa học:" Implantation of neural stem cells embedded in hyaluronic acid and collagen composite conduit promotes regeneration in a rabbit facial nerve injury model" doc

báo cáo hóa học:" Implantation of neural stem cells embedded in hyaluronic acid and collagen composite conduit promotes regeneration in a rabbit facial nerve injury model" doc

... impairment of neuromuscular function after injury When injury is recovering, shrink of time- latency and threshold, increase of amplitude is proposed to be observed The mean ± SEM time latency of the ... poly-L-ornithine- and laminin-coated coverslips displaying a microglial morphology derived Immunofluorescence staining of β-tubulin, glial fibrillary acidic protein (GFAP) and galactocerebroside (GalC) in ... staining of BrdU and S-100 Representative images of immunohistochemical staining of BrdU and S-100 A: Localization of darkly brownish stained BrdU+ cells to transected tissues of rabbits having...

Ngày tải lên: 18/06/2014, 15:20

11 1K 0
Báo cáo toán học: " Structure and electrical properties of sputtered TiO2/ZrO2 bilayer composite dielectrics upon annealing in nitrogen" pdf

Báo cáo toán học: " Structure and electrical properties of sputtered TiO2/ZrO2 bilayer composite dielectrics upon annealing in nitrogen" pdf

... layer of the ZrO -TiO Page of composite thin film was built Lastly, we can obtain the thickness of the as-deposited thin film with a ZrO2 layer (L1) of 27.639 ± 0.521 nm and TiO2 layer (L2) of 10.077 ... determined by an ex situ phase-modulated spectroscopic ellipsometry [SE] (Model Jobin Yvon, HORIBA Jobin Yvon Inc., Edison, NJ, USA) over the spectral range of 1.5 to 6.5 eV at an angle of incidence ... interface have a thickness of about 1.1 nm We consider it to be SiO2 appearing at the ZrO2/Si interface The relatively thin interface layer of 1.1 nm can be regarded as a good interfacial property...

Ngày tải lên: 20/06/2014, 21:20

5 412 0
Báo cáo hóa học: "Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route" pptx

Báo cáo hóa học: "Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route" pptx

... spectra of reduced composite at various time intervals The intensity of 750 band increased with an increase in the time of irradiation indicating that more silicotunsgstic acid is getting reduced ... As the time of dipping increased, the blue color of the film gradually changed to yellow within a minute and the intensity of the color increased which is evidenced from Fig The corresponding absorption ... dipping time of 30 are shown in Fig The particle size as well as the amount of Au in the composite is found to increase with the increase in the concentration of HAuCl4 solution The change in...

Ngày tải lên: 22/06/2014, 22:20

9 385 0
Báo cáo lâm nghiệp: "Influence of cross section dimensions on Timoshenko’s shear factor – Application to wooden beams in free-free flexural vibration" ppsx

Báo cáo lâm nghiệp: "Influence of cross section dimensions on Timoshenko’s shear factor – Application to wooden beams in free-free flexural vibration" ppsx

... rotary inertia into account The combined effects of shear deformation and rotary inertia are indeed not negligible when the length to height ratio of the beam is within the 10 to 20 range In this case, ... using the shear factor that Timoshenko included in his specific model of vibrating beams This model is an extension of the Euler-Bernoulli model because it takes the shear effect and rotary inertia ... 2) Note that the influence of the cross section ratio increased with the frequency rank, in agreement with the fact that the shear influence increases with the rank Equation (1) indeed implies...

Ngày tải lên: 08/08/2014, 00:22

3 301 0
báo cáo khoa học: " Radiological and pathological findings of a metastatic composite paraganglioma with neuroblastoma in a man: a case report" pptx

báo cáo khoa học: " Radiological and pathological findings of a metastatic composite paraganglioma with neuroblastoma in a man: a case report" pptx

... test results indicate a pheochromocytoma, CT imaging of the adrenal gland as well as of the organ of Zuckerkandl, to encompass all chromaffin cellbearing tissue along the lower abdominal aorta ... physiologic effects of catecholamine release The classic triad of headache, palpitation, and excessive sweating is seen during the paroxysmal hypertensive crisis Urinary normetanephrine or vanillylmandelic ... hydroxydaunorubicin, oncovin, prednisone) was started and finally (after two months) changed to a weekly dose of docetaxel with prednisone Ten months after the initial diagnosis our patient died of cancer-related...

Ngày tải lên: 11/08/2014, 02:22

5 348 0
Báo cáo y học: "Improving benchmarking by using an explicit framework for the development of composite indicators: an example using pediatric quality of care" docx

Báo cáo y học: "Improving benchmarking by using an explicit framework for the development of composite indicators: an example using pediatric quality of care" docx

... measures of quality Thus, using composite indicators does not imply replacing the measurement of individual metrics of quality Rather, composites merely summarize the information contained in the individual ... significant institutional expertise in developing, applying, and evaluating composite indicators; it has, in fact, published guidelines for composite indicator development [15,23,24] These guidelines ... difficult to offset a bad indicator with a good one This is in line with our concept of quality in which a quality performance metric is intended to foster superior quality throughout domains of care...

Ngày tải lên: 11/08/2014, 05:21

10 495 0
báo cáo khoa học: " Improving benchmarking by using an explicit framework for the development of composite indicators: an example using pediatric quality of care" potx

báo cáo khoa học: " Improving benchmarking by using an explicit framework for the development of composite indicators: an example using pediatric quality of care" potx

... measures of quality Thus, using composite indicators does not imply replacing the measurement of individual metrics of quality Rather, composites merely summarize the information contained in the individual ... significant institutional expertise in developing, applying, and evaluating composite indicators; it has, in fact, published guidelines for composite indicator development [15,23,24] These guidelines ... difficult to offset a bad indicator with a good one This is in line with our concept of quality in which a quality performance metric is intended to foster superior quality throughout domains of care...

Ngày tải lên: 11/08/2014, 16:20

10 547 0
Some problems of non-linear oscillations in systems with large static deflection of elastic elements

Some problems of non-linear oscillations in systems with large static deflection of elastic elements

... I O N OF ELASTIC E L E M E N T S N g u y e n V an D ao Institute of Applied Mechanics, Hochiminh City S u m m a r y In this work two following problems have been examined: 1) The non-linear ... + /1 sin Ip + p f i COS ip, sin ip — (1.2.6) SOME PROBLEMS OF NON-LINEAR OSCILLATIONS IN SYSTEMS WITH LARGE STATIC w h e r e R(0 , Bi) = R ( A h 0) = C o m p a rin g th e coefficients of the ... ctio n s of < and with period 2tt which not contain the first p harm on ics sin0, COS 6, (III.1.3) d\ị) It T h e in ten sive interaction...

Ngày tải lên: 08/04/2015, 15:33

19 214 0
Designing moment resisting connection for disassembly for implementation in precast reinforced concrete buildings

Designing moment resisting connection for disassembly for implementation in precast reinforced concrete buildings

... DfD structure in a new construction may require a change in span, in the case of beams for example or height in the case of columns or a change in fixity of the structural joints In the latter, ... strategies in the building industry The sustainable construction strategies in the building industry have been developed along three main fields: sustainability of concrete (John, 2003), sustainable ... direct approach in increasing the reusability of the construction material as instead of demolition and recycling of demolition debris or landfill, the Designing Moment-Resisting Connection for...

Ngày tải lên: 10/09/2015, 09:13

249 278 0
Biomechanical characterization of dental composite restoratives   a micro indentation approach

Biomechanical characterization of dental composite restoratives a micro indentation approach

... volumes of materials In the development of depth-sensing indentation methodology, which involves the continuous tracking of applied load and indenter’s displacement, the elastic properties of the ... The development of indentation testing methodologies has been rapid in the area of thin films and microelectronics industries During an indentation test, an indenter, usually made of a hard material ... used to determine the indentation yield strength has been shown useful as a measure of the incipient point of yielding in these resin-based dental materials The application of indentation fracture...

Ngày tải lên: 12/09/2015, 09:10

158 274 0
Design of composite haunch beams and connections for long span applications

Design of composite haunch beams and connections for long span applications

... Curve of Specimen B2 Figure 4.25 Inelastic Buckling of Compression Flange of the Beam B2 Figure 4.26 Crushing of Concrete Slab at Loading Point in Beam B2 x Figure 4.27 Strain Reading of Cross ... 4.37 Inelastic Buckling of Left Haunch Flange of the Beam B3 Figure 4.38 Inelastic Buckling of Right Haunch Flange of the Beam B3 Figure 4.39 Crushing of Concrete Slab at Loading Point in Beam ... Curve of Specimen B1 Figure 4.13 Inelastic Buckling in Compression Flange of the Beam B1 Figure 4.14 Crushing of Concrete Slab at Loading Point in Beam B1 Figure 4.15 Concrete Slab Cracking Pattern...

Ngày tải lên: 16/09/2015, 17:12

176 614 0
A splitting algorithm for system of composite monotone inclusions

A splitting algorithm for system of composite monotone inclusions

... (1.16), we obtain the primal inclusion in [4, Eq.(1.7)] Furthermore, by removing x1 from (1.16), we obtain the dual inclusion which is weaker than the dual inclusion in [4, Eq.(1.8)] (ii) In Problem ... removing v , , v s from (1.16), we obtain the primal inclusion in [7, Eq.(1.1)] Furthermore, by removing x1 from (1.16), we obtain the dual inclusion which is weaker than the dual inclusion in ... corresponding algorithm converges weakly to a point in the extended set of solutions However, there is a class of inclusions in which their dual problems are no longer available, for instance,...

Ngày tải lên: 14/10/2015, 15:28

20 204 0
The graphs below show the numbers of male and female workers in 1975 and 1995 in several employment sectors of the republic of Freedonia

The graphs below show the numbers of male and female workers in 1975 and 1995 in several employment sectors of the republic of Freedonia

... two decades later The number of men in this sector remained stable over the period, at around 700 000 Women also made gains in both the finance/banking industries and in the defence-related public ... women worked in finance and banking institutions in 1975, the number increased to 450 000 by 1995 The number of men grew only marginally from 425 000 to 480 000 over the same period In defence, ... brought significant changes in the representation of women in Freedonia's work force, according to the graphs In 1975, for example, some 300 000 men and 250 000 women worked in the communications...

Ngày tải lên: 04/10/2012, 10:02

2 1,6K 2
Báo cáo y học: "A prospective observational study of the relationship of critical illness associated hyperglycaemia in medical ICU patients and subsequent development of type 2 diabetes"

Báo cáo y học: "A prospective observational study of the relationship of critical illness associated hyperglycaemia in medical ICU patients and subsequent development of type 2 diabetes"

... pre-existing increased insulin resistance and dysfunction of beta cells Insulin resistance is present in the acutely ill [13,15,18,28] in different intensity, but the factors determining the extent of ... Mediators of cytokine-induced insulin resistance in obesity and other inflammatory settings Curr Opin Clin Nutr Metab Care 2002, 5:377-383 15 Marik PE, Raghavan M: Stress-hyperglycemia, insulin and immunomodulation ... extent of insulin resistance are not known Our observation that body mass index, which is certainly associated with insulin resistance [29], is higher in the hyperglycaemia group offers part of the...

Ngày tải lên: 25/10/2012, 10:02

8 657 1
Báo cáo y học: "Management of chest pain: exploring the views and experiences of chiropractors and medical practitioners in a focus group interview"

Báo cáo y học: "Management of chest pain: exploring the views and experiences of chiropractors and medical practitioners in a focus group interview"

... educational institution offering a training program coordinated by a medical physician However, this is in its infancy and much needs to be worked out This does indicate a growing level of interest in ... feasibility of conducting or coordinating a multidisciplinary research effort along this line of inquiry Population, setting, timeframe The convenience-sample of five focus group participants included ... and interdisciplinary As noted, funding opportunities within chiropractic are limited, yet chiropractors are working in collaboration with medical physicians in a variety of settings Following...

Ngày tải lên: 25/10/2012, 10:06

10 789 0
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