1 Department of Physics and Astronomy, University of Southern California, Los Angeles CA 90089-0484, USA and Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, D-01187, Dresden, Germany [email protected] 2 Department of Physics, Budapest University of Technology and Economics, H-1521 Budapest, Hungary [email protected] 3 Department of Physics, Budapest University of T...

a solid state fermentation method was developed for the production of citric acid from date pulp (obtained of date syrup production from the process) by aspergillus niger ptcc 5010. poor yield was obtained when potassium ferrocyanide treated date pulp were used as substrate, but methanol at a 3-4% concentration markedly increased the forma-tion of citric acid from the waste. the optimum range o...

Jiteng Sheng,1 Mohammad-Ali Miri,2 Demetrios N. Christodoulides,2 and Min Xiao1,3,* 1Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA 2CREOL, College of Optics and Photonics, University of Central Florida, Orlando, Florida 32816, USA 3National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China (Received ...

Xiaoguang Wang and Z. D. Wang Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China and Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, Hanzhou 310027, China National Laboratory of Solid State Microstructures, Nanjing Unive...

Real-time observation of ultrafast dynamics in the microcosm is a fundamental approach for understanding the internal evolution of physical, chemical and biological systems. Tools for tracing such dynamics are flashes of light with duration comparable to or shorter than the characteristic evolution times of the system under investigation. While femtosecond (fs) pulses are successfully used to i...

We use ultrafast THz spectroscopy to study Landau damping in a coherent plasma system. A series of InSb-based bulk heterostructures provide increasing spatial confinement that restricts the scattering wave vector in the electron-electron interaction. This results in a dramatic reduction of the plasma contribution to the radiation signal. The experimental results are explained by model calculati...

Models of physical actions are abstractions of the physical world and can never represent reality precisely. There are two fundamental choices anyone modeling physical action must face: The choice of what granularity to represent actions at and the choice of how to represent the state description. These two choices are closely coupled and form a basic tradeoff. Finer grain actions require more ...

production of thermostable alkaline protease in tray bioreactor for solid state fermentation is a unique process which may lead to an economical approach for production of enzyme from agricultural waste or low cost substrate. in solid state fermentation using tray bioreactor, several agricultural residues such as rice bran, sugarcane bagasse, wheat bran, barely bran, corn meal and corn husk wer...

introdouction: dentinal hypersensitivity (dh) is one of the most painful chronic problems reported in dental offices. various methods have been applied for the treatment of dh. however, majority of them are either ineffective or last for a short period of time. it has been reported that lasers, particularly neodymium- doped: yttrium aluminum garnet laser (nd: yag), can be helpful in the treatme...