scholarly journals Microplastic pollution in Yellow River: Current status and research progress of biotoxicological effects

China Geology ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 1-8
Author(s):  
Rui-ping Liu ◽  
◽  
Zhi-zhong Li ◽  
Fei Liu ◽  
Ying Dong ◽  
...  
Keyword(s):  
Yellow River ◽  
Research Progress ◽  
Current Status ◽  
River Current

scholarly journals Integration of Digital Economy and Circular Economy: Current Status and Future Directions

2021 ◽  
Vol 13 (13) ◽  
pp. 7217
Author(s):  
Zhen Liu ◽  
Jing Liu ◽  
Mohamed Osmani
Keyword(s):  
Circular Economy ◽  
Digital Technology ◽  
Global Economy ◽  
Digital Economy ◽  
Research Field ◽  
Research Progress ◽  
Current Status ◽  
Future Research ◽  
Disruptive Effect ◽  
The European Union

Circular economy (CE) is a concept actively advocated by the European Union (EU), China, Japan, and the United Kingdom. At present, CE is considered to grant the most traction for companies to achieve sustainable development. However, CE is still rarely adopted by enterprises. As the backbone of the fourth industrial revolution, the digital economy (DE) is considered to have a disruptive effect. Studies have shown that digital technology has great potential in promoting the development of CE. Especially during the COVID-19 epidemic that has severely negatively affected the global economy, environment, and society, CE and DE are receiving high attention from policy makers, practitioners, and scholars around the world. However, the integration of CE and digital technology is a small and rapidly developing research field that is still in its infancy. Although there is a large amount of research in the fields of CE and DE, respectively, there are few studies that look into integrating these two fields. Therefore, the purpose of this paper is to explore the research progress and trends of the integration of CE and DE, and provide an overview for future research. This paper adopts a bibliometric research method, employs the Web of Science database as its literature source, and uses VOSviewer visual software to carry out keyword co-occurrence analysis, which focuses on publication trends, journal sources, keyword visualization, multidisciplinary areas, life cycle stages, and application fields.

Thin-Film High-Barrier Technology for New Type Packaging Material

2010 ◽  
Vol 113-116 ◽  
pp. 2333-2336 ◽  
Author(s):  
Chun Wei Li ◽  
Xue Song Jiang ◽  
Qun Li Zhang ◽  
Shu Yan Xu ◽  
Gui Ying Wang
Keyword(s):  
Thin Film ◽  
Food Packaging ◽  
Substrate Surface ◽  
Aluminum Foil ◽  
Packaging Material ◽  
Research Progress ◽  
Current Status ◽  
High Polymer ◽  
New Type ◽  
Reactive Gases

Food Packaging material requires an excellent barrier ability to humidity and oxygen.SiOx barrier thin film deposited on high polymer substrate can compare beauty with aluminum foil in the barrier quality,even more SiOx barrier thin film is obviously allowing microwave permeating directly and it also provide a chance for merchant to vision their production in shelf life.SiOx film as barrier packaging material is becoming a high light.The current status and research progress of new type high barrier thin film packaging material were overviewed and production technology was introduced. The various influencing factors were discussed, including background vacuum, reactive gases, and pretreatment of the substrate surface and properties.

Recombination-enhanced Dislocation Glides—The Current Status of Knowledge

2009 ◽  
Vol 1195 ◽  
Author(s):  
Koji Maeda
Keyword(s):  
Research Progress ◽  
Current Status ◽  
Bipolar Devices ◽  
Wide Range ◽  
Material Systems ◽  
The Status

AbstractTo update the status of knowledge on the recombination-enhanced dislocation glides (REDG) in semiconductors, which is one of the causes of serious degradation in bipolar devices, research progress achieved for the last decade has been surveyed. Rather than presenting a complete review over a wide range of material systems, a particular attention has been paid to the REDG effect in 4H-SiC for which a lot of information has been accumulated owing to extensive studies. Although the REDG effect exhibits features that could be interpreted in terms of the phonon-kick mechanism, conclusive proof is still lacking.

scholarly journals Environmental, Biogeographic, and Biochemical Patterns of Archaea of the Family Ferroplasmaceae

2011 ◽  
Vol 77 (15) ◽  
pp. 5071-5078 ◽  
Author(s):  
Olga V. Golyshina
Keyword(s):  
Cell Wall ◽  
Research Progress ◽  
Current Status ◽  
Content Type ◽  
Research Areas ◽  
Physiological Diversity ◽  
New Family ◽  
The Family ◽  
Acidophilic Archaea

ABSTRACTAbout 10 years ago, a new family of cell wall-deficient, iron-oxidizing archaea,Ferroplasmaceae, within the large archaeal phylumEuryarchaeota, was described. In this minireview, I summarize the research progress achieved since then and report on the current status of taxonomy, biogeography, physiological diversity, biochemistry, and other research areas involving this exciting group of acidophilic archaea.

Recombination-enhanced Dislocation Glides—The Current Status of Knowledge

2009 ◽  
Vol 1195 ◽  
Author(s):  
Koji Maeda
Keyword(s):  
Research Progress ◽  
Current Status ◽  
Bipolar Devices ◽  
Wide Range ◽  
Material Systems ◽  
The Status

AbstractTo update the status of knowledge on the recombination-enhanced dislocation glides (REDG) in semiconductors, which is one of the causes of serious degradation in bipolar devices, research progress achieved for the last decade has been surveyed. Rather than presenting a complete review over a wide range of material systems, a particular attention has been paid to the REDG effect in 4H-SiC for which a lot of information has been accumulated owing to extensive studies. Although the REDG effect exhibits features that could be interpreted in terms of the phonon-kick mechanism, conclusive proof is still lacking.

scholarly journals The current status of preventive measures for urinary calculi in children

2021 ◽  
Vol 13 ◽  
pp. 175628722110395
Author(s):  
Jiao Zhong ◽  
Ziye Huang ◽  
Tongxin Yang ◽  
Guang Wang ◽  
Haixiang Guo ◽  
...  
Keyword(s):  
Preventive Measures ◽  
Urinary Calculi ◽  
Research Progress ◽  
Current Status ◽  
Common Disease

Urological calculus is a common disease in urology. Urological calculi are generally more common in adults but have become more common in children in recent years. Most existing studies focus on the prevention of urinary calculi in adults; there are relatively few articles on calculi in children. Reported preventive measures are not comprehensive enough, while the latest research progress has not been updated. The pathogenesis and preventive measures associated with urinary calculi have been the focus of research, but many preventive measures still need further clarification. This article reviews the progress on preventive measures for urinary calculi in children.

scholarly journals Friction Stir Spot Welding of Aluminum and Copper: A Review

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 156 ◽  
Author(s):  
Mingshen Li ◽  
Chaoqun Zhang ◽  
Dayong Wang ◽  
Li Zhou ◽  
Daniel Wellmann ◽  
...  
Keyword(s):  
Material Flow ◽  
Spot Welding ◽  
Dissimilar Materials ◽  
Industrial Applications ◽  
Friction Stir Spot Welding ◽  
Research Progress ◽  
Current Status ◽  
Friction Stir ◽  
Dissimilar Metal ◽  
Metal Materials

Aluminum (Al) and copper (Cu) have been widely used in many industrial fields thanks to their good plasticity, high thermal conductivity and excellent electrical conductivity. An effective joining of dissimilar Al and Cu materials can make full use of the special characteristics of these two metals. Friction stir spot welding (FSSW), as an efficient solid-state welding method suitable for joining of dissimilar metal materials, has great prospects in future industrial applications. In this paper, the FSSW studies on Al-Cu dissimilar materials are reviewed. The research progress and current status of Al-Cu FSSW are reviewed with respect to tool features, macroscopic characteristics of welded joints, microstructures, defects in welds and mechanical properties of joints. In addition, some suggestions on further study are put forward in order to promote the development and progress of Al-Cu FSSW studies in several respects: material flow, thermal history, addition of intermediate layer, auxiliary methods and functionalization of Al-Cu FSSW joint.

scholarly journals Research Progress on Plant Long Non-Coding RNA

Plants ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 408
Author(s):  
Ling Wu ◽  
Sian Liu ◽  
Haoran Qi ◽  
Heng Cai ◽  
Meng Xu
Keyword(s):  
Growth And Development ◽  
Protein Modification ◽  
Plant Molecular Biology ◽  
Research Progress ◽  
Current Status ◽  
Sequence Length ◽  
Small Molecular Weight ◽  
Rna Molecules ◽  
Non Coding Rnas

Non-coding RNAs (ncRNAs) that were once considered “dark matter” or “transcriptional noise” in genomes are research hotspots in the field of epigenetics. The most well-known microRNAs (miRNAs) are a class of short non-coding, small molecular weight RNAs with lengths of 20–24 nucleotides that are highly conserved throughout evolution. Through complementary pairing with the bases of target sites, target gene transcripts are cleaved and degraded, or translation is inhibited, thus regulating the growth and development of organisms. Unlike miRNAs, which have been studied thoroughly, long non-coding RNAs (lncRNAs) are a group of poorly conserved RNA molecules with a sequence length of more than 200 nucleotides and no protein encoding capability; they interact with large molecules, such as DNA, RNA, and proteins, and regulate protein modification, chromatin remodeling, protein functional activity, and RNA metabolism in vivo through cis- or trans-activation at the transcriptional, post-transcriptional, and epigenetic levels. Research on plant lncRNAs is just beginning and has gradually emerged in the field of plant molecular biology. Currently, some studies have revealed that lncRNAs are extensively involved in plant growth and development and stress response processes by mediating the transmission and expression of genetic information. This paper systematically introduces lncRNA and its regulatory mechanisms, reviews the current status and progress of lncRNA research in plants, summarizes the main techniques and strategies of lncRNA research in recent years, and discusses existing problems and prospects, in order to provide ideas for further exploration and verification of the specific evolution of plant lncRNAs and their biological functions.

scholarly journals Genetic diversity in centipedegrass [Eremochloa ophiuroides (Munro) Hack.]

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Jianjian Li ◽  
Hailin Guo ◽  
Junqin Zong ◽  
Jingbo Chen ◽  
Dandan Li ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Warm Season ◽  
Central China ◽  
Research Progress ◽  
Current Status ◽  
Future Research ◽  
Heritable Variation ◽  
Geographical Regions ◽  
Poaceae Family ◽  
Genomic Studies

AbstractGenetic diversity is the heritable variation within and among populations, and in the context of this paper describes the heritable variation among the germplasm resources of centipedegrass. Centipedegrass is an important warm-season perennial C4 grass belonging to the Poaceae family in the subfamily Panicoideae and genus Eremochloa. It is the only species cultivated for turf among the eight species in Eremochloa. The center of origin for this species is southern to central China. Although centipedegrass is an excellent lawn grass and is most widely used in the southeastern United States, China has the largest reserve of centipedegrass germplasm in the world. Presently, the gene bank in China holds ~200 centipedegrass accessions collected from geographical regions that are diverse in terms of climate and elevation. This collection appears to have broad variability with regard to morphological and physiological characteristics. To efficiently develop new centipedegrass varieties and improve cultivated species by fully utilizing this variability, multiple approaches have been implemented in recent years to detect the extent of variation and to unravel the patterns of genetic diversity among centipedegrass collections. In this review, we briefly summarize research progress in investigating the diversity of centipedegrass using morphological, physiological, cytological, and molecular biological approaches, and present the current status of genomic studies in centipedegrass. Perspectives on future research on genetics and genomics and modern breeding of centipedegrass are also discussed.

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