this paper investigated the effects of combining fibers with self-consolidating concrete (scc). 12 series of test specimens were prepared using three kinds of fibers including steel, polyphenylene sulfide (pps) and glass fibers with four different volumes fractions and one specimen without fibers as a reference sample. all plans were subjected to fresh concrete tests. for mechanical behavior of...

The source-time function of megaton class nuclear explosions has been determined by modeling teleseismic shortand long-period body waves with synthetic seismograms. A simple analytic expression for the time function was used to closely match observations from both Novaya Zemlya and the U.S. test site at Amchitka. It was found that the time functions of all the events have a substantial overshoo...

Clavulanic acid (CA) is a powerful inhibitor of the beta-lactamases, enzymes produced by bacteria resistants to penicillin and cefalosporin. This molecule is produced industrially by strains of Streptomyces clavuligerus in complex media which carbon and nitrogen resources are supplied by inexpensive compounds still providing high productivity. The genetic production improvement using physical a...

Natural substances have long served as sources of therapeutic drugs. Many substances have been derived from traditional medicine, e.g. digitalis (from Foxglove), ergotamine (from contaminated rye), quinine (from Cinchona), etc. More recently, many antibiotic, antifungal and anticancer agents have been derived from bacteria, fungi, plant and animal sources. While newer techniques of combinatoria...

Bone grafting is the procedure whereby missing bone is replaced with material from either the patient’s own body (autograft), that of a donor (allograft) or with synthetics. The use of exogenous materials to reconstruct skeletal defects is not a new concept. Artificial, synthetic or natural substitutes, in the form of gold and silver plates and pieces of coconut shell, were found in cranial def...

High molecular weight glutenin subunit composition and variation in 95 Elite-1 synthetic hexaploid (SH) wheats (Triticum turgidum/Aegilops tauschii; 2n = 6× = 42; AABBDD) were determined by sodium dodecyl sulphate polyacrylamide gel electrophoresis method (SDS-PAGE). Twenty two different alleles at Glu-1 loci in SHs were observed. Forty four different patterns of HMW-GS in synthetics were found...

Botanical insecticides have long been touted as attractive alternatives to synthetic chemical insecticides for pest management because botanicals reputedly pose little threat to the environment or to human health. The body of scientific literature documenting bioactivity of plant derivatives to arthropod pests continues to expand, yet only a handful of botanicals are currently used in agricultu...

AbstructModels for synthesizing radiance measurements by the Atmospheric Infrared Sounder (AIRS) are described. Synthetics radiances have been generated for developing and testing data processing algorithms. The radiances are calculated from geophysical states derived from weather forecasts and climatology using the AIRS rapid transmission algorithms. The data contains horizontal variability at...

The large number of high-quality stations from global networks (e.g., IRIS, GEOSCOPE) allows for rapid and robust recovery of source parameters of large earthquakes. We present a self-consistent analysis of surface waves in terms of directivity parameters. The boxcar is often used to recover source parameters but is rarely a faithful representation of an event' s time function. We demonstrate t...

BACKGROUND This study focused on respiratory symptoms due to occupational exposures in a contemporary general population cohort. Subjects were from the Dutch Monitoring Project on Risk Factors for Chronic Diseases (MORGEN). The composition of this population enabled estimation of respiratory risks due to occupation from the recent past for both men and women. METHODS The study subjects (aged ...