Bibliometric analysis of the research landscape on rice husks gasification (1995-2019).

The processing of rice (Oryza sativa L.) generates large quantities of lignocellulosic wastes termed rice husks (RH). Numerous researchers have proposed biomass gasification as the panacea to the waste disposal and management challenges posed by RH. However, a comprehensive analysis of RH gasification is required to examine the research landscape and future directions on the area. The research landscape and global developments on RH gasification from 1995 to 2019 are examined through bibliometric analysis of 228 publications extracted from the Web of Science. Bioresource Technology is considered the most influential journal on the topic, whereas China is the most productive nation due to government policies and research funding. The most productive organization is the Harbin Institute of Technology, which is due to the significant contributions of Zhao YiJun and co-workers. Keyword analysis revealed three crucial research themes: gasification, biomass, and rice husks. The literature revealed that the syngas yield, distribution, and performance of RH gasification are significantly influenced by temperature, equivalence ratio, selected reactor, and gasifying medium. The techno-economic analysis of RH gasification revealed that government interventions such as high sales rates and low investment costs could enhance the commercial viability of the technology. Furthermore, the integration of RH gasification with carbon capture utilization and storage could promote the decarbonization of power plants, negative emissions, and net-zero climate goals. Overall, the paper provides valuable information for future researchers to identify strategic collaborators, journal publications, and research frontiers yet unexplored.

Atresia of coronary sinus ostium with retrograde drainage via persistent left superior vena cava.

Atesia of the coronary sinus ostium (ACSO) with retrograde drainage of cardiac veins via the left superior vena cava (LSVC) is a very rare abnormality. This condition is usually asymptomatic during life and a majority of the cases were reported as incidental postmortem findings. If there is retrograde venous drainage via persistent LSVC, this communication cannot be ligated irrespective of its size or the presence of a communicating vein because of resultant cardiac congestion and edema. We report herein a 9-month-old Chinese female who underwent repair of a perimembranous ventricular septal defect, patent ductus arteriosus and secundum atrial septal defect. During the operation, ligation of LSVC resulted in myocardial congestion and distension of the heart. The release of ligature decompressed the heart immediately.