Doubling times

A double time correlation among the 3 binary temporal sequences of a triplet of transducers are calculated. A maximum of 8 different but overlapping triplets can be predefined. 

Doubling times steel, 35 years aluminium, 23 years plastics, 18 years. 

Time, h OD, single OD, double Time, h OD, single OD, double... 

The double-time Green s function associated to operators A(t) and B(t ) is defined as (21,127)... 

For a pure state density operator, the Fourier transform of this double-time Green s function yields the spectral representation of the propagator (21)... 

A method of assessing the toxicity of implants has been proposed based on the effects on cell ultrastructure in organ cultures, on cell surface characteristics, and cell population doubling times. The effects have been correlated with hemorrhage, fibrosis, and necrosis, respectively (103). Poly-e-caprolactone was stated to give minimal tissue reaction and could not be scored in these tests. 

Biocatalyst Shape Size (pm) Cell wall Aggregates Doubling time (h) OUR (mmol 1 h )... 

Tumor Type Percent of Tumors Approximate Cell Doubling Time Sensitivity to Chemotherapy and Radiotherapy Relative Risk of Metastasis... 

Tomato cell suspensions in modified Murashige and Skoog medium (12) were assayed for change in cell volume at varying concentrations of polar and nonpolar extracts. Twenty-five ml erlenmeyer flasks (5 reps/treatment) containing 10 ml of sterile medium, tomato cell suspension, and extract were allowed to settle for 20 min in sidearm test tube attachments. Relative height of cell volume fraction to medium was recorded each day for 11 days. Cell suspensions were incubated in the dark at 27 C on an orbital shaker at 125 rpm. The doubling time of control cell suspensions were approximately 2.25 days. 

The cell doubling times go from less than 8 h to more than 18 h. Cells are also accumulating in G2. This is coincident with the gradual transition of String from a ubiquitously expressed product to a periodically expressed product. This transition can be largely attributed to regulation of String. 

Nurse The relationship between size and growth is an interesting issue that was discussed a lot in the 1960s but has not been discussed much in recent years. But before we address it could I clarify one other fact that confused me. Bruce Edgar, if you overexpress Myc, is the mass doubling time of the tissue unchanged ... 

Edgar No, the mass doubling time is decreased. The response of the cell to this is to increase to a larger size and then plateau. 

Edgar We have done this experiment, overexpressing Myc or Ras co-expressed with String. This decreases the cell doubling time and reduces the cell size, but the... 

The high space-time yields are the result of a doubling time of only 30 min and its applicability for high cell-density cultures. However, it is hardly possible to excrete overexpressed proteins into cultivation media. In addition, accumulation of pyrogenic lipopoly-saccharides in its outer membrane (a distinctive feature of Gram-negative bacteria) make additional purification steps necessary if pharmaceutical proteins are produced by E. coli [29]. 

The response of the system concerned to an external electromagnetic field is conveniently described in terms of double-time Green s function (GF) which can be introduced in a variety of representations.144,218 221 In what follows we will involve the representation in Matsubara s frequency space218 which is accepted in the theory of anharmonic crystals197 and provides a number of exact solutions in the case of a single adsorbed molecule.I50,1 2 In this approach, the spectral line shape for high-frequency vibrations can be determined as follows 184... 

BW), C57BL/6 strain with B16 in tumor doubling time. But at midtreatment, tumors... 

Figure 2. Edotecarin activity is shown based on potency (A) normalized on a significant cell panel, where half scale is log10 IC50 average of all cell lines, or simple (B) by log10 IC50 or SN-38 (white dot) and Edotecarin (black dot) IC50 s are displayed in comparison to (C) doubling time of specific cell line. indicate activity of Edotecarin in HCT-116 cells used in this chapter.

---