We created a simulation model to investigate the characteristics of fluorescence in two-photon-excited samples. In the model, the sample is a diffusible solution of fluorophore molecules, which is divided into cubic cells and illuminated by a train of focused laser pulses described as a Gaussian beam. Simulating the state transitions according to a multilevel photodynamic model (also including ...

BACKGROUND Stoma creation is a surgical operation where the surgeon makes an artificial opening on the abdomen from where the bowel is taken out. It is a radical treatment with permanent physical signs of bodily change. In general, it leads to loss of a central and personal physical function, as well as an alteration in the bodily design. Research in the field may provide additional information...

this study is a descriptive - survey and objective evaluation analysis of creation causes on informal settlement shadgholi-khan town of qom city. answer questionnaire by 200 protector of household in shadgholi-khan tow, economic, social and physical variables affective creation of informal settlements in the shadgholi-khan its spatial and local effects are investigated. research findings show t...

background the transjugular intrahepatic portosystemic stent-shunt (tipss) builds a shortcut between the portal vein and a liver vein, and represents a sophisticated alternative to open surgery in the management of portal hypertension or its complications. objectives to describe clinical experiences with a low-profile nitinol stent system in tipss creation, and to assess primary and long-term s...

We demonstrate microscale spatial and chemical control of diffusion within protein matrixes created through the use of nonlinear multiphoton excited photochemistry. The mobility of fluorescent dyes of different mass and composition within controlled cross-linked environments has been measured using two-photon excited fluorescence recovery after photobleaching (FRAP). The diffusion times for sev...

the “human mud” is one of the motifs of the poetry attributed to khayyam. the imagery, concepts and philosophical thoughts about the human being's origin (creation, death, life after death) form the essence of this poetry. are the khayyam's quatrains about creation original and new? or do they have a precedent in the ancient world poetry? why does the iranian literary criticism claim that this ...