A team of researchers at the University of Pittsburgh led by Dr Daniel Shiwarski has created a new tissue culture platform that mimics the natural cellular environment. They used biocompatible collagen and 3D printing technology. CHIPS enable the creation of realistic models of diseases such as diabetes and hypertension. They make it possible to eliminate the need for animal testing. Published in the prestigious journal Science Advances, the research shows that the new scaffolds could revolutio...
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CHIPS - 3D printed collagen scaffolds.
Dynamics vs. resolution of the reflectometer.
Dynamics or dynamic range is a parameter of a reflectometer that tells you about the measurement capabilities of the device in terms of maximum line attenuation. This parameter is expressed in dB and usually takes values in the range 20 dB - 40 dB. In simple terms, it tells you what maximum attenuation the measured line can reach before the noise in the reflectogram prevents any interpretation of the measurement. For example, a dynamic of 20 dB will in theory allow 50 km of fibre to be measured...
RACK board - installation of multiswitches in a RACK cabinet.
RACK cabinets have become the standard in multi-family buildings for the organisation of telecommunication installations. Thanks to their functionality, universal dimensions (19" width, various heights in U units) and aesthetics, they enable the orderly installation of devices such as multiswitches, amplifiers, network switches, power supplies or patch panels....
VLANs in monitoring networks.
Library new titles
- 2025-03-21
- Video intercom systems
Hikvision currently offers three video door intercom systems: 2-Wire IP, 2-Wire HD and IP system. The choice of the right system for a customer can be dictated by two factors, which include functionality and the type of communication bus between devices.
- 2025-01-02
- About TV & SAT Antennas
Choosing the right antenna is a key issue in any TV system. When looking for a suitable model, the following factors should be taken into account – gain, directivity, mounting location, built-in signal amplifier and the band for which the antenna is tuned.
- 2024-08-25
- Installation Components
One of the criteria for classification of TV systems in hotels is the programming to be distributed. The simplest systems may provide only free-to-air terrestrial TV broadcasts, whereas more advanced solutions will include satellite channels, also some premium ones (pay-TV). The content required by the owner/investor will depend on the categories of prospective hotel guests (foreign and thematic channels etc).
- 2024-07-17
- Some Theory
PoE (Power over Ethernet) is the name of a number of methods that allow for powering network devices through UTP/FTP cables. This way it is possible to power devices such as cameras, phones, switches, access points, etc.
- 2024-06-19
- Measurements
Measurement of DVB-T2 terrestrial television signals and DVB-S/S2 satellite television signals. The technique of measuring DVB-T2 terrestrial digital TV signals is not very different from DVB-T signal measurement.
- 2024-06-12
- HIKVISION
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