soil samples were collected from seven sites in and around the metropolitan area of mexicocity. the locations were chosen as possible sources of fugitive dusts which contribute to suspended particulate matter in the atmosphere of mexico city. x-ray fluorescence (xrf) was used to determine the concentrations of several major elements (si, k, ca, ti, mn, and fe), as well as of other trace element...

To assess nutritional potential, pod yield, and Ca concentration of pods and foliage were determined for a snap bean population, which included sixty S 1 families plus four commercial varieties. The experimental design was an 8 × 8 double lattice, repeated at two locations (Arlington and Hancock, Wis.). Snap beans were planted in June 1993 and machine harvested in August 1993. Calcium analyses ...

We have computed new solar models using the same stellar evolution code as described in Charbonnel, Vauclair and Zahn (1992). This code, originating from Geneva, now includes the computation of element segregation for helium and 12 heavier isotopes. It may also include any type of mixing of the stellar gas, provided this mixing may be parametrized with an effective diffusion coefficient as a fu...

Calcium Binding Proteins (CBPs) play a major role in many biological processes. The three dimensional (3D) structure of several CBPs has been resolved by means of X-ray crystallography and nuclear magnetic resonance. We consulted several databases to compile a collection of CBPs of known 3D structure. The analysis of these data shows, the CBP structures are distributed over many different funct...

We have recently identified an intronic polymorphic CA-repeat region in the human endothelial nitric oxide synthase (eNOS) gene as an important determinant of the splicing efficiency, requiring specific binding of hnRNP L. Here, we analyzed the position requirements of this CA-repeat element, which revealed its potential role in alternative splicing. In addition, we defined the RNA binding spec...

Typical hallmarks of cancer include programmed cell death evasion, uncontrolled cell growth, invasion, and metastasis. Changes in intracellular Ca(2+) levels can modulate signaling pathways that control a broad range of cellular events, including those important to tumorigenesis and cancer progression. Here we discuss how known molecular mediators of cellular Ca(2+) homeostasis impact tumor dyn...

Abstract Utilizing waste biomass as a reserve energy source can play an essential role in reducing expanding fossil fuel’s environmental impact. This paper presented analysis of physical, chemical, morphological, calorific values and porosity from coconut shell (CSW) alternative for biofuel feedstock. The physical properties CSW were dominated by volatile matter fixed carbon content 73.8 22.7 (...

In this study, concentration of 17 elements, including As, Ba, Cd, Co, Cu, Hg, Mn, Ni, Pb, Zn, Ca,Fe, Mg, Na, P, S, Si, as well as methylmercury in 31 surface sediments were assessed. The sampling stations were Gulf of Golestan, Miankale Island, Babolsar, Nowshahr and Anzali, which represented the most important harbors in the Golestan, Mazandaran and Gilan provinces in the southern parts of th...

We adopt the following convention: x1, x2, z are sets, A is a non empty set, and f , g, h are elements of CA. Let us consider A. The functor +CA yielding a binary operation on CA is defined by: (Def. 1) For all elements f , g of CA holds +CA(f, g) = (+C)◦(f, g). Let us consider A. The functor ·CA yielding a binary operation on CA is defined as follows: (Def. 2) For all elements f , g of CA hold...

The wireless communication is highly deployed due to it convenience of mobility. The wireless local area network, WLAN is dominated by IEEE802.11 standard. All the new notebooks are equipped with the IEEE802.11 b WLAN. It becomes one of the main focuses of the WLAN research. Most of the researches are simulation based due to high cost required for the hardware implementation. The IEEE802.11b st...