quần thể nấm p oryzae tại miền bắc việt nam

... immediately apparent Symbols which have been used are uB ; aB ; 1B , or even b We shall consistently use the lowercase a with an appropriate subscript [NOTE: Throughout the text, drill problems appear ... general problems appear at the ends of the chapters The answers to the drill problems are given in the same order as the parts of the problem.] \ D1.1 Given points M…À1; 2; 1†, N…3; À3; 0†, and P À2; ... component of F that is perpendicular to G (c) Find the vector component of G that is perpendicular to F: 1.14 The three vertices of a regular tetrahedronpare  located at O…0; 0; 0†, p  p ...

Ngày tải lên: 07/08/2014, 20:23

... important practical answer, for it is the field between the parallel plates of an air capacitor, provided the linear dimensions of the plates are very much greater than their separation and provided ... two very small objects separated in a vacuum or free space by a distance which is large compared to their size is proportional to the charge on each and inversely proportional to the square of ... newtons per coulombÐthe force per unit charge Again anticipating a new dimensional quantity, the volt (V), to be presented in Chap and having the label of joules per coulomb (J/C) or newton-meters per...

Ngày tải lên: 07/08/2014, 20:23

... still applicable, and thus so is (4) Equation (3) is not applicable, however, and so the relationship between D and E will be slightly more complicated than (2) Since D is directly proportional ... little simpler than the corresponding E fields, since 0 does not appear And, finally, it helps to become a little familiar with D before it is applied to dielectric materials in Chap | v v 56 ... conductor would produce an induced charge of ÀQ coulombs on the surrounding sphere Going one step further, we could now replace the two outer hemispheres by an empty (but completely closed) soup can Q...

Ngày tải lên: 07/08/2014, 20:23

... concept presented in this chapter An electric dipole, or simply a dipole, is the name given to two point charges of equal magnitude and opposite sign, separated by a distance which is small compared ... superposition is applicable It will then follow that the potential of a system of charges has a value at any point which is independent of the path taken in carrying the test charge to that point ... versus  on polar graph paper (homemade if you wish) …b† Sketch jE…r ˆ 1; ;  ˆ 0†j versus  on polar paper 4.27 Two point charges, nC at …0; 0; 0:1† and À1 nC at …0; 0; À0:1†, are in free space …a†...

Ngày tải lên: 07/08/2014, 20:23

... the plane y ˆ 0, and find V at P 1; 2; 0† …b† Find E at P: Let the plane x ˆ be a perfect conductor in free space Locate a point charge of nC at P1 …7; 1; À2†, and a point charge of À3 nC at P2 ... We now define the polarization P as the dipole moment per unit volume, n Áv ˆ pi Áv30 Áv iˆ1 P ˆ lim …19† | v v with units of coulombs per square meter We shall treat P as a typical continuous ... FIGURE 5.14 The problem of the parallel-plate capacitor The capacitance per square meter of surface area is =d: The charge on the lower plane must then be positive, since D is directed upward, and...

Ngày tải lên: 07/08/2014, 20:23

... McGraw-Hill Book Company, New York, 1958, pp 150±152 Moore, A D.: Fields from Fluid Flow Mappers, J Appl Phys., vol 20, pp 790-804, August 1949; Soap Film and Sandbed Mapper Techniques, J Appl Mech (bound ... Development of Fluid Mappers, Trans AIEE, vol 69, part II, pp 1615±1624, 1950; Mapping Techniques Applied to Fluid Mapper Patterns, Trans AIEE, vol 71, part I, pp 1±5, 1952 Salvadori, M G., and M L Baron: ... vol 17, pp 291±298, September 1950; Four Electromagnetic Propositions, with Fluid Mapper Verifications, Elec Eng., vol 69, pp 607±610, July 1950; The Further Development of Fluid Mappers, Trans...

Ngày tải lên: 07/08/2014, 20:23

... perhaps V0 , V1 ; , or perhaps numerical values These definite equipotential surfaces will provide the boundary conditions for the type of problem to be solved in this chapter In other types ... D…†; …d† S on the upper surface of the lower plane; …e† Q on the upper surface of the lower plane …f † Repeat …a† to …c† for region by letting the location of the upper plane be  ˆ 0:188 À ... Given point P 1; 2; À1†, find: …a† V at P; …b† E at P; …c† v at P; …d† the equation of the equipotential surface passing through P; …e† the equation of the streamline passing through P …f † Does...

Ngày tải lên: 07/08/2014, 20:23

... the surface is approached A paddle wheel placed in the position shown, with its axis perpendicular to the paper, will turn in a clockwise direction, showing the presence of a component of curl ... requirement (perpenÁ dicularity or tangency) allows us to replace the dot product of Ampere's circuital law with the product of the scalar magnitudes, except along that portion of the path where ... the logical application of the Biot-Savart law and a knowledge of the magnetic fields of simple form Problem 13 at the end of this chapter outlines the steps involved in applying Á Ampere's circuital...

Ngày tải lên: 07/08/2014, 20:23

... jmorb j Bint < Bappl Bint > Bappl Bint ) Bappl : Bint ˆ Bappl Bint > Bappl Bint > Bappl : Bint ˆ Bappl : Bint ˆ Bappl Domains Adjacent moments oppose Unequal adjacent moments oppose; low  Nonmagnetic ... the point at which the force is applied In Fig 9.5a, we apply a force F at point P, and we | v v FIGURE 9.5 (a) Given a lever arm R extending from an origin O to a point P where force F is applied, ... time-varying fields are discussed We shall develop the appropriate expression in discussing Poynting's theorem in Chap 11 An alternate approach would be possible at this time, however, for we might...

Ngày tải lên: 07/08/2014, 20:23

... decade was a period of rapid growth, with sites appearing at an exponential rate It so happens that when one computes an exponentially weighted mixture of lognormals one obtains a power-law distribution ... terms of Zipf’s ranked distribution In fact, any purely power-law probability density function will yield a Zipf ranked distribution as follows: Let the PDF be p ( x) = Cx −τ Then the probability ... exponent for the low degree ones) (Ripeanu 2002) The presence of Zipf’s law has implications for the search strategies used in P2 P networks Currently, most P2 P networks use a broadcast method of...

Ngày tải lên: 06/03/2014, 21:20

... the PTVII-PTVI volume for RapidArc was also observed compared to IMRT RapidArc showed also an improvement in target coverage: for PTVII-PTVI or PTVI (V90%) EUD improved of ~1 Gy on PTVII-PTVI ... CTVI was performed without help of surgical clips, not implanted in the patients This procedure is acknowledged to be suboptimal and, in clinPage of 12 (page number not for citation purposes) Radiation ... beam-on plus machine pro- Page of 12 (page number not for citation purposes) Radiation Oncology 2009, 4:27 gramming and setting time and excluding patient positioning and imaging procedures) Pre-treatment...

Ngày tải lên: 09/08/2014, 10:20

... space power density PD with received power, Pr , i.e Pr = PD Ae Ae is a function of frequency and antenna gain and is related to AF as shown in Section 4-12 SAMPLE CALCULATIONS Section 4-2 provides ... can be expressed in terms taking 50 ohms into account Details are provided in Section 4-12 POWER DENSITY APPROACH To account for the impedance difference , the antenna’s effective capture area ... Conversion Table - Field Intensity and Power Density PD = E2/Z0 ( Related by free space impedance = 377 ohms ) E (Volts/m) 20 log 106 (E) (dBµV/m) PD (watts/m2) 10 Log PD (dBW/m2) Watts/cm2 dBW/cm2 mW/cm2...

Ngày tải lên: 12/12/2013, 09:15

... process more open The Council should allow additional opportunities for participation and increase the number and types of groups and individuals who can participate Increased public participation ... hearing procedure prior to the granting of a permit Opponents not have the opportunity to weigh-in and share their opinion This is very different than the United States, where opportunities for public ... local department receive approval from MEP or the State Council before issuing permits.46 In the United States, the Environmental Protection Agency (EPA) must approve of state programs before permits...

Ngày tải lên: 18/02/2014, 04:20

... spectroscopy To probe the dynamics of molecular structure changes during the redox process, these techniques may be coupled with the potential jump technique [25] In this approach, a rapid potential ... as a spectral Fig Schematic presentation of the potential jump time-resolved SERR experiment for a potential jump from negative to positive potentials Left: temporal relationship between potential ... the final potential may then be probed by SERR and SEIRA spectroscopy, the latter being operated in the step scan or SERR and SEIRA spectroscopy of cytochrome c rapid scan mode for probing processes...

Ngày tải lên: 22/03/2014, 16:20

... being potassium acetate, potassium carbonate, potassium lignite, potassium hydroxide, and potassium salt of partially hydrolyzed polyacrylamide (PHPA) For rheological control, different types of polymers ... 1996) Polyethercyclicpolyols Polyethercyclicpolyols possess molecular properties and characteristics that permit the preparation of enhanced drilling fluids, which inhibit the formation of Mud Compositions ... ethylene-propylene copolymers or ethylene-propylene-diene terpolymers These compounds are far more effective oil mud viscosifiers than the organophilic clays orginally used However, specific organophilic...

Ngày tải lên: 02/04/2014, 16:06

... without prior written permission Reproduction prohibitions not apply to the forms contained in this product when reproduced for personal use For information on bulk purchases or corporate premium ... Accept applications B ADVERTISING RENTAL PROPERTY Screen potential tenants Choose someone to rent your property In this chapter, we examine the practical and legal aspects of each of these steps, ... at the top of the Rental Application, listing the property address and amounts due before the tenants may move in Ask all applicants to fill out a Rental Application form, and accept applications...

Ngày tải lên: 18/04/2014, 14:11

... complication probability In all the presented patients it was decided that the benefit of increased tumor control probabilities and improved spar- Page of 10 (page number not for citation purposes) ... chemotherapy 23 Rhabdomyosarcoma 29 45 chemotherapy 31 Hypopharynx-Carcinoma 60 Re-irradiation (IMRT) Page of 10 (page number not for citation purposes) Radiation Oncology 2009, 4:37 IMRT could be applied ... treatment planning and application, idea for this paper, literature research and proof reading All authors read and approved the final manuscript Acknowledgements The work was supported by the German...

Ngày tải lên: 09/08/2014, 10:20