We define (super) n-energy tensors for non-gravitational fields. The possibility of interchange of superenergy between gravitational and other fields is considered. 1 The Bel-Robinson tensor and its properties. The Bel-Robinson (BR) tensor 1,2 is defined by T αβλµ ≡ C αρλσ C β µ ρ σ + * C αρλσ * C β µ ρ σ (1) where C αρλσ is the Weyl tensor and * indicates the usual dual operation: * C αβλµ ≡ (...

A series of amino acid ester derivatives containing 5-fluorouracil were synthesized using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC*HCl) and N-hydroxybenzotriazole (HOBt) as a coupling agent. The structures of the products were assigned by NMR, MS, IR etc. The in vitro antitumor activity tests against leukaemia HL-60 and liver cancer BEL-7402 indicated that (R)-ethyl 2-(2...

A very computationally-efficient MonteCarlo algorithm for the calculation of Dempster-Shafer belief is described. If Bel is the combination using Dempster’s Rule of belief functions Bel1, . . . ,Belm then, for subset b of the frame Θ, Bel(b) can be calculated in time linear in |Θ| and m (given that the weight of conflict is bounded). The algorithm can also be used to improve the complexity of t...


 Research aim : This study aims to test the Quality of Moodle Borneo E-Learning (BEL) which includes Service Quality, Student and Lecturer on Perceived Satisfaction, Usefulness Benefits based E-learning System Success Evaluating Model for active BEL users
 Design/Methode/Approach research uses a quantitative approach with non-probability sampling method technique used is Quota Sampli...

Parallel solutions to the robot control problem are an attractive alternative to single processor systems as the need for ne motion robot control increases Since multiple processors provide inherent redundancy par allel solutions to the robot control problem also a ord the opportunity to provide a degree of tolerance to both mechanical and control failure In this paper we describe a new robot c...

Phospholipase A(2) (PLA(2)) hydrolyzes the sn-2 ester bond in phospholipids, releasing a fatty acid and a lysophospholipid. Recently, a novel 85-kDa membrane-bound-Ca(2+)-independent PLA(2) (iPLA(2)) was identified in insect and bacterial cells transfected with candidate PLA(2) sequences. However, few data exist demonstrating a membrane-bound-iPLA(2) in mammalian cells, its subcellular localiza...

Tumor resistance to chemotherapy is the major obstacle to employ cisplatin, one of the broadly used chemotherapeutic drugs, for effective treatment of various tumors in the clinic. Most acknowledged mechanisms of cancer resistance to cisplatin focus on increased nuclear DNA repair or detoxicity of cisplatin. We previously demonstrated that there was a unique metabolic profile in cisplatin-resis...

A series of novel [1,2,4]triazolo[1,5-a]pyrimidine derivatives has been designed and synthesized in order to find novel anti-tumor compounds. The structures of all the compounds were confirmed by IR, 1H-NMR, MS and elemental analysis. Their anti-tumor activities against cancer cell lines (HT-1080 and Bel-7402) were tested by the MTT method in vitro. Among them, compound 19 displayed the best an...