removal of snow and ice

... factors, including type and amount of cement and other aspects of the concrete mixture, curing temperature, type of structure, design of forms, and skill of workers After removal of forms, concrete ... duration of curing and protection at 50 or 70 F (10 or 21 C) to achieve different percentages of the standard-cured 28-day strength 6.9 - Removal of forms and supports The removal of forms and supports ... the ice into water, and to raise the temperature of the free water to the final mixture temperature The specific heat of ice is 0.5 Btu/(lb F) [0.5 kcal/(kg C)] and the heat of fusion of ice...

Ngày tải lên: 24/10/2014, 15:45

... standard ruler and a standard clock along the orbit of the particle.But when the ruler and clock move along the orbit in the gravitational field, the length of ruler and rate of the clock vary ... axis of abscissas In our example, elements of length decrease along the positive direction of axis and increase along the negative direction It should be noted that the laws of conservation of ... above, of the expression v = 2ax , we obtain[3]: t = t 2ax c (4) Because of the non-uniformity and anisotropy of space in non-inertial reference frames, it is necessary to describe properties of...

Ngày tải lên: 22/07/2014, 06:21

... evaluation of food: Principals and practices New York: Chapman and Hall Macfie, H J., Bratchell, N., Greenhoff, H., & Vallis, L V (1989) Designs to balance the effect of order of presentation and first-order ... perception of passion-fruit juice using free-choice profiling Journal of Sensory Studies, 20, 17–27 Dennison, C M., & Sheperd, R (1995) Adolescent food choice: An application of the theory of planned ... development of the vocabulary to describe the four types of dry-cured ham Each consumer was given one slice of each of the four dry-cured hams They were instructed to include only objective attributes and...

Ngày tải lên: 03/04/2013, 21:07

... days of studying Vinh, April 2004 Nguyễn Thị Vinh =2= Table of contents Page Part A: Introduction Reasons for choosing the topic Aims of the study Scope and limitation of the study Methods of the ... overview of the important role of testing and evaluation - help teacher realize the weaknesses and the strengths of the traditional test items, approach the new test items, know new tendency of testing ... prove general language command 1.1.4 Proficiency test Unlike placement, diagnostic and progress tests, proficiency test gives us a general picture of a students knowledge and ability rather than...

Ngày tải lên: 24/12/2013, 09:36

... hypotheses of character state polarity, and these have been formulated during the course of previous cladistic and evolutionary investigations of Fagales and Fagaceae (Kaul 1985; Nixon 1985; Nixon and ... address the origin of the genus Quercus and evolution of morphological specialization in general INTERNATIONAL JOURNAL OF PLANT SCIENCES 1370 Table Results of the Templeton (1983) Test of Alternative ... ratio tests (see Huelsenbeck and Crandall 1997) starting with a neighbor-joining tree and determined that the TIM + G model (Posada and Crandall 1998), a submodel of the general time reversible...

Ngày tải lên: 14/03/2014, 16:20

... range of linguistic phenomena in text, including morphology, parts-ofspeech (POS), named entity mentions, and even topic changes in discourse An HMM consists of a set of states S, a set of observations ... as experience with part -of- speech and grammar learning has shown, induction systems are quite capable of producing some uninterpretable mix of various levels and kinds of structure Therefore, ... structure in (a) and (b) to the parts-ofspeech in (c) If strong sequential correlations exist at multiple scales, any fixed search procedure will detect and model at most one of these levels of structure,...

Ngày tải lên: 23/03/2014, 19:20

... potential, concentration, the presence/absence of electron acceptors and donors, and effects, both synergistic and antagonistic, of associated microflora (Howard and Banerjee, 1984) Lag periods were established ... used as a convenient approximation of the kinetics of degradation of test substrates where there is no growth of the microbial population and a low concentration of the test substrate is present ... availability and concentration of the substrate The Monod equation was developed to describe the growth of a population of microbes in the presence of a carbon source At low concentrations of substrate,...

Ngày tải lên: 28/03/2014, 19:20

... Fig 4-2(b) to yield I DQ and VGSQ , two of the necessary three quiescent variables Application of KVL around the drain-source loop of Fig.4-3(b) leads to the equation of the dc load line, iD  ... p-channel device (conduction by holes); a discussion of n-chanel devices applies equally to p-channel devices if complementary (opposite in sign) voltages and currents are used Val de Loire Program p.58 ... a constant value of vGS , JFET acts as a linear resistive device (in the ohmic region) until the depletion region of the reverse-biased gatesource junction extends the width of the channel (a...

Ngày tải lên: 18/05/2014, 18:57

... 1.1 Each device may have various speed grades and packages, the prices of which vary greatly The lowest price for each device is chosen for our plots It can be seen that FPGA devices are not ... (>80% of maximum toggling frequency of the FPGA device) and relatively full usage of the logic elements (>70% of total), the compiler may start having difficulties in finding a layout of all ... 1/8 s on, 1/8 s off, 1/8 s on again and 5/8 s off until the next period, and the LED output produced with Q[23] AND. Q[20] will create a strobe of four flashes, etc Variations of the LED flashing...

Ngày tải lên: 31/05/2014, 00:20

... affect (MH1, MH2 and MH4) Tests of scaling assumptions Standard deviations of items within a scale were similar and close to 1.0 for BP, GH, VT, SF and MH (scales with 5and 6-choice responses) ... functioning and quality of life of depressive patients with 12 weeks of psychiatric care Journal of the Medical Association of Thailand 2005, 88:1261-1266 van Griensven F, Chakkraband M, Thienkrua ... structure of the SF-36 in Thailand and use of the summated ratings algorithm The only scaling assumption not fully satisfied was the lack of equality in the item-scale correlations of RE3 and the...

Ngày tải lên: 18/06/2014, 19:20

... stability and (B) Near tandem balTests of (A) Coordinated stability and (B) Near tandem balance During the stair ascent and descent tests, 45% and 52% (respectively) of older people held the handrail ... SL and AT conceived the study, participated in its design and coordination and tested the old participants AB and Page of (page number not for citation purposes) Journal of NeuroEngineering and ... used the handrail in the test of stair descent differences in mobility task performance between young and older participants, between older participants with and without stroke and, with and without...

Ngày tải lên: 19/06/2014, 08:20

... FullAddersPAR , and the number of slices produced at the last PAR, SlicesPAR : SlicesRequired(h) = SlicesPAR FullAdders(h) FullAddersPAR (26) This provides a local estimate of the number of slices required ... approximation of Entry in Table requires 208 less slices (a reduction of thirty percent) than the DCT approximation of Entry in Table and requires 438 less slices (a reduction of forty-eight ... on Circuits and Systems II: Analog and Digital Signal Processing, vol 43, no 10, pp 677–688, 1996 J Katto and Y Yasuda, “Performance evaluation of subband coding and optimization of its filter...

Ngày tải lên: 23/06/2014, 00:20

... combination items addition items Multiple - choice items  the incomplete statement type with a choice of four or five options  Seven types of multiple – choice items in the textbook; however, item ... the test items Constructors of classroom tests and school achievement tests should take advantage of the types of errors made by students in their free composition and open-ended answers to questions ... Constructing pairing and matching items    Usually consisting of a short conversation: e.g a stimulus in the form of a statement or question followed by a response often in the form of a statement...

Ngày tải lên: 27/06/2014, 09:20

... beauty of the now rarer stones The study of this section of mineralogy is one of intense interest, and by understanding the nature, environment, chemical composition and the properties of the ... during that time of thousands, perhaps millions, of tons of earth, rock, and the like, subjected, for a certain portion at least of that period, to extremes of heat or cold, all of which determine ... classification of stones, and indeed for that of a multitudinous variety of substances It is one of the many marvellous phenomena of nature that mineral, as well as many vegetable and animal substances,...

Ngày tải lên: 28/06/2014, 19:20

... surfaces of the base and top shall be parallel and at right angles to the vertical axis of the cone The mold shall have a minimum wall thickness of 0.2 in [5 mm] The outside of the top edge of the ... expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility This standard is subject to revision ... committee and must be reviewed every five years and if not revised, either reapproved or withdrawn Your comments are invited either for revision of this standard or for additional standards and should...

Ngày tải lên: 10/07/2014, 23:20

... passage carefully and choose the correct answer Movements and gestures by the hands, arms, legs, and other parts' of the body and face are the most pervasive types of nonverbal messages and the most ... spite of feeling homesick and missing their relatives and friends b by feeling homesick and missing their relatives and friends c with the feeling of homesick and missing their relatives and friends ... know and what they want to know They have to not only listen to words but also observe verbal devices and body gestures in order to understand the meanings of vague and ambiguous words and to...

Ngày tải lên: 25/07/2014, 03:20

... Phys Soc of Jpn., 19, 559–566 Kannappan, V & Vinayagam, S.C (2007) Ultrasonic investigation of ion-solvent interactions in aqueous and non-aqueous solutions of transfer and inner transfer of metal ... in the number of component molecules or the development of size of the components The same fluid is used throughout the experiment and hence no chance for the change in the number of components ... counteracts the orientation of the magnetic moments into the direction of the field In a strong field, most of the particles become oriented and the magnetization of the sample attain saturated.22...

Ngày tải lên: 07/08/2014, 14:20

... cm and 3.1 ± 0.6 mm 2.4 Calculations and statistical analysis The mean cover (± standard error) of field vegetation and mosses were calculated for all treatments and experiments The effect of ... patches or mounds, besides the establishment of field vegetation, include the accumulation of litter, and compaction of the soil surface Örlander and Nilsson [11] concluded that it is unclear ... in the south-central part of Sweden The previous forest was a 105-year-old mixed stand of Norway spruce and Scots pine The soil was classified as podzolic, sandy till and the soil moisture class...

Ngày tải lên: 08/08/2014, 01:21

... group and 45 to the control group The table shows the numbers of patients who died and survived in each group.The χ2 test gives a test statistic of 3.209 with degree of freedom and a P value of ... = alert, V = voice responsiveness, P = pain responsive and U = unresponsive.) The χ2 test of association gives a test statistic of 19.38 with degrees of freedom and a P value of less than 0.001, ... number of ways the row totals of 11 and 84 could have been obtained given 95 patients altogether is denoted by 95C11 and is equal to 95!/11!84!, where 95! (‘95 factorial’) is the product of 95 and...

Ngày tải lên: 12/08/2014, 20:20