The low injectivity of coal seams and injectivity loss with CO2 injection are the major technique challenges of ECBM.
In addition to providing a new medium for self-expression, the technique challenges traditional ideas about the limits of human vision.
Gosciniak and Tan theoretically proposed a method to avoid the technique challenges and at the same time placed graphene sheets close to the maximum of the electric field [36], as is shown in Figure 4c.
Despite being an ultra-sensitive analytical technique, challenges, such as how to get a proper match between the SERS substrate and light for better signal enhancement to obtain a stable, sensitive SERS substrate, prevent its widespread applications.
These features make the bedside application of the SPR technique challenging.
However, recent data obtained using cultivation independent techniques challenge this model.
Currently, end users are facing difficulties interfacing and synchronizing the microfluidic components with existing hardware, and these new techniques challenge current lab workflows, making adoption of these platforms difficult.
Learning techniques challenges, strengths, weaknesses, and limitations are presented in Section 1.4.1.
Then, the current key techniques, challenges, and future trends in micro-nanorobot are discussed from the aspects of actuating, sensing, controlling, system integration, and commercialization.
The latest advances in genome-wide techniques challenged the "protein-central dogma" with the discovery of the so-called non-coding RNAs (ncRNAs).
