This action may take several minutes for large corpora, please wait.
doc#122 | reaction tubes, frozen down, and each tube was | then | sealed off. The reactants for the gas phase |
doc#122 | a side-arm attached to the manifold and | then | allowed to distil slowly into the manifold |
doc#124 | in the establishment of epidemics. They | then | point out that with our present lack of |
doc#124 | prerequisite for epidemic typhus. In this case, | then | , the military objective was accomplished |
doc#125 | room temperature for 1 hr. the tubes were | then | centrifuged at 1000 rpm for 1 min and examined |
doc#125 | to stand at room temperature for 1 hr and | then | were centrifuged at 1000 rpm for 1 min. |
doc#125 | 20, 18, 10, 8, 4 and 2%). The cells were | then | washed three times with saline and resuspended |
doc#125 | position at 1°C. The unstained strips were | then | marked, using the stained ones as a guide |
doc#125 | pH 7.2, ionic strength 0.154. They were | then | centrifuged at 59,780 rpm for 35 to 80 |
doc#125 | isotonic saline. Ultracentrifugation was | then | carried out in a Spinco model L ultracentrifuge |
doc#125 | the run. Successive 1-ml fractions were | then | drawn off with a hypodermic syringe, starting |
doc#126 | page 74). The staminate willow catkins, | then | , provide their visitors with both nectar |
doc#126 | good diet that it is "optimal", and it is | then | that young queens begin to appear. Simultaneously |
doc#126 | for instance, in August. The temperature | then | is still very high. At the old nest, the |
doc#127 | filled with a solution under pressure and | then | were injected with various sized colored |
doc#127 | pressure on the pulmonary artery or vein, and | then | by injecting the pulmonary artery and vein |
doc#128 | showed that this is, indeed, possible. He | then | applied this principle of reciprocal inhibition |
doc#129 | is not a secant but a tangent of g, for | then | any point on such a generator will be transformed |
doc#129 | all invariant. But if this is the case, | then | an arbitrary pencil of lines having a point |
doc#129 | of multiple secants of g can intersect, | then | the regulus must be quadratic, or in other |