Screen II

Impedance of the PEP - II DIP Screen

The vacuum chamber of a storage ring normally consists of periodically spaced pumping slots. The longitudinal impedance of slots are analyzed in this paper. It is found that although the broad-band impedance is tolerable, the narrow-band impedance, as a consequence of the periodicity of the slots, may exceed the stability limit given by natural damping with no feedback system on. Based on this ...

The MORPHEUS II protein crystallization screen

High-quality macromolecular crystals are a prerequisite for the process of protein structure determination by X-ray diffraction. Unfortunately, the relative yield of diffraction-quality crystals from crystallization experiments is often very low. In this context, innovative crystallization screen formulations are continuously being developed. In the past, MORPHEUS, a screen in which each condit...

Visual Screen: Transforming an Ordinary Screen into a Touch Screen

Touch screens are very convenient because one can directly point to where it is interesting. This paper presents an inexpensive technique to transform an ordinary screen into a touch screen using an ordinary camera. The setup is easy: position a camera so it can see the whole screen. The system calibration involves the detection of the screen region in the image. which determines the projective...

کنترل شن توسط Expandable Sand Screen

When to screen and not to screen

Colorectal cancer (CRC) is the third most common cause of cancer-related deaths with treatment of advanced and metastatic CRC (mCRC) remaining palliative at best. (1) The epidermal growth factor receptor (EGFR) has been identified as a therapeutic target for a multitude of malignancies, including mCRC. Ligand-binding to EGFR results in the subsequent activation of multiple signal transduction p...