An Easily Made Micrometer

An Easily Made Tissue Culture Perfusion Chamber

A perfusion chamber is described with which a tissue culture can be irrigated successively with different immersion media. Only 1-2 ml. of medium are required for each change, which can be accomplished within 1 minute. Simplicity of design permits speed and economy in manufacture. Perfusion by suction instead of by positive pressure has eliminated certain drawbacks of previous designs. Mixing e...

An easily made, low-cost, tissue-like ultrasound phantom material.

Ultrasound phantoms are generally of two types. One mimics the acoustic properties of tissue (with regard to the speed of sound, average attenuation, etc.). The main purpose of the other is to approximate the sonographic appearance of tissue. The latter is often used as a biopsy training aid. Those which mimic the acoustic properties of tissue have been constructed of agar with suspended graphi...

Design and use of easily made RNA size markers.

Heterometallic rings made from chromium stick together easily.

The idea that coordination complexes could be used in quantum information processing (QIP) was introduced by Leuenberger and Loss, and later developed by them and others. Our contribution has been to look at the S= =2 ground state {Cr7Ni} anti-ferromagnetically coupled rings, [4,5] including measuring spin coherence times. For QIP to work there is a need to link such rings into more sophisticat...

Patent Ductus Arteriosus With Eisenmenger Syndrome: Difficult Diagnosis Made Easily With Saline Contrast Echocardiography

The diagnosis of patent ductus arteriosus (PDA) with Eisenmenger syndrome is difficult. We report a case of 35-year-old male who came to our outpatient department (OPD) for evaluation of repeated hemoptysis and dyspnea on exertion. He had already completed two courses of ATT. On examination, grade 3 ejection systolic murmur was audible over precordium. Transthoracic echocardiography (TTE) showe...