Over the last century and a half, the world's population has grown from one billion to almost six billion, and the time required to circumnavi-gate the globe has decreased from 365 days to fewer than 3. Currently, 1.4 million persons travel internationally by air every day. The speed and volume of international travel are cited by the Institute of Medicine as principal factors contributing to t...

Unscheduled DMA synthesis was induced by procarcinogens in freshly isolated suspensions and primary cul tures (6 days old) of hepatocytes on collagen membranes. Incorporation of ['HJthymidine in the presence of hydroxyurea was used to measure unscheduled DMA synthesis. When hepatocellular DNA was isolated on cesium chlo ride gradients, significant levels of unscheduled DNA synthesis were measur...

Mer cu ric chlo ride, p-chloromercuribenzoate and 5,5′-dithiobis(2-nitrobenzoic acid) ir re vers ibly in hib ited the ac tiv ity of Esch e richia coli glu ta mate de car box yl ase. Their sec ond or der rate con stants for in ac ti va tion are 0.463 μMmin, 0.034 μMmin, 0.018 μMmin, re spec tively. The char ac ter is tics of the in hi bi tion by the three thiol-group re agents sup ports the idea...

In tro duc tion: Co bas 6000 (Roc he, Ger ma ny) is bioc he mis try ana lyzer for spec trop ho to met ric, im mu no tur bi di met ric and io n-se lec ti ve de ter mi nation of bioc he mi cal ana lytes. He re by we pre se nt ana lytical va li da tion wi th em pha sis on met hod per for man ce jud gme nt for rou ti ne ope ra tion. Ma te ria ls and met ho ds: Va li da tion was ma de for 30 ana lyt...

Abstract In this study, two industrial wastes – circulating fluidized bed combustion co-fired fly ash (CFA) and ground granulated blast-furnace slag (GGBS) were used as green materials instead of cementitious in controllable low strength material (CLSM). CLSM was to backfill the pavement. should meet compressive requirements specification (under 8.24 MPa), it had self-consolidating characterist...

Study on using ascorbic acid and ferrous reduction method to removal the chlorate ions (ClO3 ) in the water. The results show that 100 mL 3.06 mg/L of ClO3 in ascorbic acid and ClO3 quality ratio 7.19, pH =6.2,35°C, the reaction time of for 15 min, the removal rate was 100%. And ferrous reduction method to remove 100mL 3.06 mg/L of ClO3 in pH = 6.2, Fe and ClO3 quality ratio 1.79, 30°C for 30mi...

It is not the purpose of this paper to herald a discovery, but rather to call attention to an unusual, but practical, application of facts already at hand relating to the killing of vegetative bacteria by exposing them to bactericidal vapors, especially to that of chloroform. {S,p,166.y Chloroform has long been widely accepted as a preservative. When it is added to immune sera (5, p. 667) j the...

Abstract This study focuses on the effects of soil textural heterogeneity longitudinal dispersion under saturation conditions. A series solute transport experiments were carried out using saturated columns packed with two filter sands and mixtures these sands, having d 50 values 95, 324, 402, 480 µm, subjected to four different steady flow rates. Values coefficient ( D ) estimated from observed...

Coastal communities utilize tidal water sources; existing surface does not meet clean standards, and are greatly affected by current use. Managing sources to the needs of community is very difficult obtain, so research needed determine quality, quantity, distance standards. This study aims sources. used a descriptive qualitative approach, observation method, survey, questionnaire, documentation...