Large interconnected gold wire structures ( approximately cm;{2}) of different topologies have been made by the drying of a gold nanoparticle suspension that has formed a connected network of liquid bridges in the interstices between a 2D crystalline layer of latex particles and a substrate. Slow evaporation of the suspending medium assembles the nanoparticles into a periodic or disordered cond...

The purpose of this study is to evaluate the use of arabinoxylan as potential suspending agent, an effective alternative to commercially used excipients for the preparation of pharmaceutical suspensions. Alkali extraction was done to separate arabinoxylan from ispaghula (Plantago ovata) seed husk by alkali extraction its physicochemical characterization was done and the suspending properties of...

Although it has been known for more than a decade that the volume of isolated mitochondria is inversely related to the osmolarity of the surrounding medium (2, 3), it was not until 1955 that Tedeschi and Harris (4) demonstrated that mitochondria obey Boyle-van% Hoff’s Law. Since then, supporting evidence for the osmotic behavior of these subcellular structures has been ample (5, 6). In 1957 and...

Venous blood, taken with EDTA-NaCl solution according to Schulz et al (1971, Z. Klin. Chem. Klin. Biochem. 9, 329-333) is used. The blood is centrifuged at IQOg for 10 min and 10 μΐ of the supernatant is added to 3000 μΐ of a suspending medium (dilution 1:80); 300 μΐ platelet suspension are read in a nephelometer cuvet or tube against blank. The number of platelets per liter blood are determine...

By a study of the enzymes contained in fibrinous exudates produced by injection of a sterile inflammatory irritant (turpentine) conditions have been found in which each of two enzymes occurs alone. The one, leucoprotease, digests in the presence of alkali; the other, resembling lymphoprotease, digests in the presence of acid, yet both exhibit almost maximum activity in an approximately neutral ...

It has been shown that Krebs ascites tumor cells incubated in vitro with immune gamma globulin and complement lose the bulk of their cytoplasmic RNA to the suspending medium, although the cell membrane remains visibly intact. The present experiments show that about four-fifths of the lost RNA is sedimented by centrifugation of the cell-free medium at 105,000 g. Electron microscopic and chemical...

The response of sickle cells with varying water content to alterations in oxygen tension has been studied. Cells that were severely dehydrated while sickled retained the characteristic sickled morphology even after prolonged reoxygenation. When the cell water content was increased by reduction of the suspending medium osmolality, the cells unsickled. Cells that were dehydrated before deoxygenat...

The semen used in these studies was collected from healthy dairy bulls by means of an artificial vagina and was kept in a refrigerator until used. All experiments were begun within 2 hours after the semen was collected. Observations were made on the effect of inhibitors on bull sperm in the egg yolk-buffer pabulum previously described (2, 3). Semen and yolk-buffer at pH 6.8 were mixed at the ra...

In their everyday lives people flexibly handle many tasks. They work on one at a time, make quick decisions about which one to work on, and put aside tasks whenever attending to them is not required to achieve the task’s goal. This last capability is critical because rather than fixate on a blocked task, a person can work on some other task. For example, a person making bean soup wouldn’t watch...