en examinant une serie de composes homologues tels que, les hydrocarbures, les alcools, les acides organiques, etc. on remarque les points d'ebullition et de fusion croissent avec la masse moleculaire, neanmoins, il n'ya aucune relation simple entre le point d'ebullition, ou le point de fusion et la grandeur moleculaire en comparant des molecules de types differents. l'align...

The Interference Free Determination of Selenium in Environmental and Clinical Samples by ICP-MS Justine Clare Turner The determination of selenium in environmental and clinical samples by ICP-MS is complicated by both poor sensitivity and severe interferences resulting from both the sample matrix and the argon plasma. The purpose of this study was to investigate ways of overcoming these problem...

This work is devoted to characterizing the plasma produced by nanosecond laser ablation. The expanding plasma was generated by the interaction of a home made XeCl excimer laser with a Cu target. The time-of-flight method was utilized as diagnostic tool of the plasma charged particles. By this method, in fact, we were able to measure the ion and electron currents, the charge-states and the energ...

Repair welding (RW) with wire cladding is a common procedure to extend the in-service life of heavily loaded tool parts for die and mould industries 1-5 . The main advantages of repair welding are short downtime and cost efficiency compared to production of new tool part. Repair welding in general lowers the tool cost in the final part and enables higher added value to the die casting and injec...

m-toluic acid (MTA) is widely used in manufacturing of dyes, pharmaceuticals, polymer stabilizers, and insect repellents. The aim of present study was to evaluate the impact of biofield treatment on physical, thermal and spectroscopic properties of MTA. MTA sample was divided into two groups that served as treated and control. The treated group received Mr. Trivedi’s biofield treatment. Subsequ...

The Krotos experience requires fast imaging (10 to 100 images/sec) of a dynamic process involving highly attenuating corium (density 8) and detection of low density variations (distinction between water and steam), with millimetric spatial resolution. In response to this difficult problem, various solutions were devised and simulated. We will show that the only feasible option is to use a very ...

Air-fuel ratio control in gasoline engines has so far relied upon the fact that the stoichiometric air-fuel ratio of gasoline is an identified constant, largely thanks to its consistent chemical composition. In the case of Liquefied Petroleum Gas (LPG), chemical composition is subject to high variability due to geological and economic factors, amongst others. The implication of this variability...

Cervical cancer is the cancer that can be the most effectively prevented by screening. Western countries have implemented Pap smear screening and there is highly effective treatment for women with high-grade lesions or early stage invasive cancer, such as laser vaporisation or excision, cryotherapy or hysterectomy. This strategy has led to a decrease of incidence, morbidity and mortality from t...

The adsorption of toluene from aqueous solution using waste tyre rubber granules (WTRG) was investigated in a batch system. The effect of various factors such as contact time, amount of adsorbent, size of adsorbent particles, and temperature of solution on the adsorption capacity of WTRG was determined. The equilibrium contact time was obtained to be 30 minutes indicating fast adsorption. The a...