Related Concept Videos

Competence-Induced DNA Uptake in Staphylococcus aureus03:13

Competence-Induced DNA Uptake in Staphylococcus aureus

Source: Cafini, F., et.al. Methodology for the Study of Horizontal Gene Transfer in Staphylococcus aureus. J. Vis. Exp. (2017)This video demonstrates competence-induced DNA uptake in Staphylococcus aureus through natural transformation. A chloramphenicol-sensitive strain engineered to constitutively express a sigma factor is cultured under nutrient-limiting conditions to enhance competence, then incubated with donor DNA carrying a resistance gene. Successful gene transfer is confirmed by the...
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Clinical Application of Phase Angle and BIVA Z-Score Analyses in Patients Admitted to an Emergency Department with Acute Heart Failure04:05

Clinical Application of Phase Angle and BIVA Z-Score Analyses in Patients Admitted to an Emergency Department with Acute Heart Failure

In this protocol, we explain how to obtain and interpret phase angle values and bioelectrical impedance vectorial analysis (BIVA) Z-score obtained by bioelectrical impedance in patients with acute heart failure admitted to the Emergency Department and their clinical applicability as a predictive marker for the prognosis of a 90-day...
2.8K
An R-Based Landscape Validation of a Competing Risk Model05:37

An R-Based Landscape Validation of a Competing Risk Model

The present protocol describes codes in R for evaluating the discrimination and calibration abilities of a competing risk model, as well as codes for the internal and external validation of...
2.5K
Establishing a Competing Risk Regression Nomogram Model for Survival Data04:57

Establishing a Competing Risk Regression Nomogram Model for Survival Data

Presented here is a protocol to build nomograms based on the Cox proportional hazards regression model and competing risk regression model. The competing method is a more rational method to apply when competing events are present in the survival...
10.8K
Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus10:35

Vector Competence Analyses on Aedes aegypti Mosquitoes using Zika Virus

The presented protocol can determine the vector competence of Aedes aegypti mosquito populations for a given virus, such as Zika, in a containment...
3.4K
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
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