Modified Activation Process for Supercapacitor Electrode Materials from African Maize Cob.

In this work, African maize cobs (AMC) were used as a rich biomass precursor to synthesize carbon material through a chemical activation process for application in electrochemical energy storage devices. The carbonization and activation were carried out with concentrated Sulphuric acid at three different temperatures of 600, 700 and 800 °C, respectively. The activated carbon exhibited excellent microporous and mesoporous structure with a specific surface area that ranges between 30 and 254 m·g as measured by BET analysis.

Community evolution in patent networks: technological change and network dynamics.

When studying patent data as a way to understand innovation and technological change, the conventional indicators might fall short, and categorizing technologies based on the existing classification systems used by patent authorities could cause inaccuracy and misclassification, as shown in literature. Gao et al. (International Workshop on Complex Networks and their Applications, 2017) have established a method to analyze patent classes of similar technologies as network communities.

[Osteochondromas of the spine. A diagnosis to consider in spinal cord compression syndromes].

The authors reviewed 312 cases of solitary and multiple osteochondromas seen in SARAH Hospital for the Locomotor System during a period of 13 years-from 1982 to 1994. They selected six cases of patients with osteochondromas of the spine, corresponding to 1.92% of the total number of diagnosed cases of this entity.