Bacillus cereus (IHB B 379) has been isolated from the sediments of illegal gold mining area located in Danau Biru Singkawang, these bacteria have resistant properties by being able to grow on media containing HgCl2 with a concentration 500 ppm. This study aimed determine effect temperature and mercuric chloride (HgCl2) growth optimum 379). The used Completely Randomized Factorial Design...

The forced Duffing oscillator is investigated by intentional time-delayed displacement feedback by fast Fourier transform based incremental harmonic balance method along with continuation technique (FFT-IHBC). FFT-IHBC can efficiently develop frequency response curves with all stable and unstable solutions and solution branches. Appreciable reduction in peak value of response and gradual reduct...

After long eras of socialism, wars and economic embargo when Iraqi people were severely exhausted, Iraq finally adopts free market economy. Its Gross Domestic Product (GDP) increased rapidly.The fortune was to flow in a proper frame legislations Iraqis.Since wealth needs time grow for person, housing commodity is high costs, then legislation be issued organize the national support private secto...

Raking is a widely used technique for developing survey weights. It assigns a weight value to each sampling unit such that the weighted distribution of the sample is in very close agreement with two or more marginal control variables. For example, in household surveys the control variables are typically sample design and sociodemographic variables. Raking is an iterative process that uses the s...

Intramolecular hydrogen bonds (IHBs) play a central role in the molecular structure, chemical reactivity and interactions of biologically active molecules. Here, we study the IHBs of seven related o-carbonyl hydroquinones and one structurally-related aromatic lactone, some of which have shown anticancer and antioxidant activity. Experimental NMR data were correlated with theoretical calculation...

Nonlinear energy sink (NES) refers to a typical passive vibration device connected linear or weakly nonlinear structures for absorption and mitigation. This study investigates the dynamics of 1-dof 2-dof NES with damping combined stiffness oscillator. For system NES, truncation failure frequency are revealed through bifurcation analysis using complex variable averaging method. The detuning inte...