The use of plastic waste as a bitumen extender added throughout the manufacturing process asphalt concrete contributes value to that type waste. Moreover, this polymer can improve some mechanical properties without weakening its workability and other characteristics too much. study aimed address these issues for four types waste, using different contents by dry compared results with conventiona...

An immunological procedure for the rapid and specific identification of Coccidioides immitis isolates has been developed. The specificity of the procedure is based on the fact that C. immitis produces antigens that are not produced by morphologically similar fungi. The procedure involved the transfer of heavy mold-form inocula to flasks that contained small volumes of brain heart infusion broth...

Relative growth rate (RGR), leaf water potential (psi w), transpiration rate (Tr), photosynthetic rate (Pn), and stomatal and mesophyll resistances to CO2 exchange were measured or calculated to determine how periodic seismic (shaking) stress decreased dry weight accumulation by soybean (Glycine max [L.] Merrill cv Wells II). Seismic stress was applied with a gyratory shaker at 240 to 280 revo...

Following our previous paper, we exammed the effects on the heme synthesis in quail yolk sac cells of polar compounds, other than dimethyl sulfoxide. that induce erythroid cell differentiation in cultured Friend leukemia cells. Dissociated yolk sac cells from quail embryos at the definitive primitive streak stage were cultured in a gyratory shaker in a medium containing dimethyl sulfoxide or ot...

The spermatozoon of the mealybug Pseudococcus obscurus Essig is a filamentous cell (0.25 micro by 300 micro) which exhibits three-dimensional flagellations throughout most of its length. It has microtubules (200 A diameter) and a threadlike nuclear core (0.07-0.09 micro diameter) which extend almost its entire length, but apparently it has no mitochondria, centrioles, typical flagellum, or acro...

Following our previous paper, we exammed the effects on the heme synthesis in quail yolk sac cells of polar compounds, other than dimethyl sulfoxide. that induce erythroid cell differentiation in cultured Friend leukemia cells. Dissociated yolk sac cells from quail embryos at the definitive primitive streak stage were cultured in a gyratory shaker in a medium containing dimethyl sulfoxide or ot...

Cold in-place recycling (CIR) is a cost-effective treatment for deteriorated pavements, and a recent FHWA policy statement recommends recycled materials be considered for all paving projects. A survey of 38 state departments of transportation by the Rocky Mountain User Producer Group found that many routinely use the technique, but there are some problems with performance reliability, specifica...

  The authors previously reported a new, in vitro technique for determining the invasiveness of four rat neurogenic tumor cell lines. Now this method has been modified and applied to the analysis of the invasiveness of human brain tumors.   Eighty-seven tumors, including 61 gliomas, six metastatic brain tumors, 10 meningiomas, four neurinomas, one melanoma, one hemangioblas...

Alkyl-lysophospholipids have been shown to possess antitumoral activity in animal and in human tumors. Among them, racemic 1-O-octadecyl-2-O-methylglycero-3-phosphocholine (ET-18-OCH3) had an antimetastatic effect in experimental tumors. We investigated the effect of ET-18-OCH3 on invasion of MO4 mouse fibrosarcoma cells and on cellular activities possibly related to invasion in vitro. Ten micr...