scholarly journals Topological engineering of two-dimensional ionic liquid islands for high structural stability and CO2 adsorption selectivity

2021 ◽  
Author(s):  
Chenlu Wang ◽  
Yanlei Wang ◽  
Zhongdong Gan ◽  
Yumiao Lu ◽  
Cheng Qian ◽  
...  
Keyword(s):  
Chemical Engineering ◽  
Co2 Adsorption ◽  
Structure And Function ◽  
Green Solvents ◽  
Adsorption Selectivity ◽  
Interfacial Assembly ◽  
Assembly Structure ◽  
High Structural Stability ◽  
Co2 Adsorption Selectivity ◽  
And Function

Ionic liquids (ILs) as green solvents and catalysts are highly attractive in the field of chemistry and chemical engineering. Their interfacial assembly structure and function are still far less well...

Zn(II)-Benzotriazolate Clusters Based Amide Functionalized Porous Coordination Polymers with High CO2 Adsorption Selectivity

2014 ◽  
Vol 53 (17) ◽  
pp. 8842-8844 ◽  
Author(s):  
Yong-Qiang Chen ◽  
Yang-Kun Qu ◽  
Guo-Rong Li ◽  
Zhan-Zhong Zhuang ◽  
Ze Chang ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Co2 Adsorption ◽  
Porous Coordination Polymers ◽  
Adsorption Selectivity ◽  
High Co2 ◽  
Co2 Adsorption Selectivity

Natural gas upgrading using a fluorinated MOF with tuned H2S and CO2 adsorption selectivity

Nature Energy ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 1059-1066 ◽  
Author(s):  
Youssef Belmabkhout ◽  
Prashant M. Bhatt ◽  
Karim Adil ◽  
Renjith S. Pillai ◽  
Amandine Cadiau ◽  
...  
Keyword(s):  
Natural Gas ◽  
Co2 Adsorption ◽  
Adsorption Selectivity ◽  
Co2 Adsorption Selectivity

A 3D MOF showing unprecedented solvent-induced single-crystal-to-single-crystal transformation and excellent CO2 adsorption selectivity at room temperature

2014 ◽  
Vol 50 (100) ◽  
pp. 15886-15889 ◽  
Author(s):  
Tao Qin ◽  
Jun Gong ◽  
Junhan Ma ◽  
Xin Wang ◽  
Yonghua Wang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structural Transformation ◽  
Room Temperature ◽  
Co2 Adsorption ◽  
Adsorption Selectivity ◽  
Crystal Transformation ◽  
Co2 Adsorption Selectivity

A multifunctional MOF material showing rare solvent-induced structural transformation with substitution of bridging-water and guest-exchange at 298 K is reported.

scholarly journals Assembly, structure, and function of the 26S proteasome

2010 ◽  
Vol 20 (7) ◽  
pp. 391-401 ◽  
Author(s):  
Lynn Bedford ◽  
Simon Paine ◽  
Paul W. Sheppard ◽  
R. John Mayer ◽  
Jeroen Roelofs
Keyword(s):  
Structure And Function ◽  
26S Proteasome ◽  
Assembly Structure ◽  
And Function

Reversing C2H2–CO2 adsorption selectivity in an ultramicroporous metal–organic framework platform

2019 ◽  
Vol 55 (76) ◽  
pp. 11354-11357 ◽  
Author(s):  
Hui-Min Wen ◽  
Caijun Liao ◽  
Libo Li ◽  
Ling Yang ◽  
Jing Wang ◽  
...  
Keyword(s):  
Binding Sites ◽  
Co2 Adsorption ◽  
Metal Organic Framework ◽  
Fine Tuning ◽  
Adsorption Selectivity ◽  
Pore Sizes ◽  
Metal Organic ◽  
Co2 Adsorption Selectivity ◽  
At Will ◽  
Organic Framework

Fine-tuning the pore sizes, metrics, and binding sites within a MOF platform can reverse the adsorption selectivity between C2H2 and CO2 at will.

scholarly journals The NtrYX Two-Component System Regulates the Bacterial Cell Envelope

mBio ◽  
2020 ◽  
Vol 11 (3) ◽  
Author(s):  
Kimberly C. Lemmer ◽  
François Alberge ◽  
Kevin S. Myers ◽  
Alice C. Dohnalkova ◽  
Ryan E. Schaub ◽  
...  
Keyword(s):  
Bacterial Cell ◽  
Cell Envelope ◽  
Structure And Function ◽  
Two Component System ◽  
Component System ◽  
Content Type ◽  
Bacterial Cell Envelope ◽  
Two Component ◽  
Assembly Structure ◽  
And Function

ABSTRACT Activity of the NtrYX two-component system has been associated with important processes in diverse bacteria, ranging from symbiosis to nitrogen and energy metabolism. In the facultative alphaproteobacterium Rhodobacter sphaeroides, loss of the two-component system NtrYX results in increased lipid production and sensitivity to some known cell envelope-active compounds. In this study, we show that NtrYX directly controls multiple properties of the cell envelope. We find that the response regulator NtrX binds upstream of cell envelope genes, including those involved in peptidoglycan biosynthesis and modification and in cell division. We show that loss of NtrYX impacts the cellular levels of peptidoglycan precursors and lipopolysaccharide and alters cell envelope structure, increasing cell length and the thickness of the periplasm. Cell envelope function is also disrupted in the absence of NtrYX, resulting in increased outer membrane permeability. Based on the properties of R. sphaeroides cells lacking NtrYX and the target genes under direct control of this two-component system, we propose that NtrYX plays a previously undescribed, and potentially conserved, role in the assembly, structure, and function of the cell envelope in a variety of bacteria. IMPORTANCE The bacterial cell envelope provides many important functions. It protects cells from harsh environments, serves as a selective permeability barrier, houses bioenergetic functions, defines sensitivity to antibacterial agents, and plays a crucial role in biofilm formation, symbiosis, and virulence. Despite the important roles of this cellular compartment, we lack a detailed understanding of the biosynthesis and remodeling of the cell envelope. Here, we report that the R. sphaeroides two-component signaling system NtrYX is a previously undescribed regulator of cell envelope processes, providing evidence that it is directly involved in controlling transcription of genes involved in cell envelope assembly, structure, and function in this and possibly other bacteria. Thus, our data report on a newly discovered process used by bacteria to assemble and remodel the cell envelope.

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

2019 ◽  
Vol 39 (4) ◽  
pp. 636-647
Author(s):  
Zhoupeng Han ◽  
Rong Mo ◽  
Haicheng Yang ◽  
Li Hao
Keyword(s):  
Structure Function ◽  
Semantic Annotation ◽  
Structure And Function ◽  
Assembly Model ◽  
Content Type ◽  
Conceptual Design Phase ◽  
Assembly Structure ◽  
Flow Activity ◽  
And Function ◽  
Assembly Models

PurposeThree-dimensional computer-aided design (CAD) assembly model has become important resource for design reuse in enterprises, which implicates plenty of design intent, assembly intent, design experience knowledge and functional structures. To acquire quickly CAD assembly models associated with specific functions by using product function requirement information in the product conceptual design phase for model reuse, this paper aims to find an approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model before functional semantic-based assembly retrieval.Design/methodology/approachAn approach for structure-function correlations analysis and functional semantic annotation of CAD assembly model is proposed. First, the product knowledge model is constructed based on ontology including design knowledge and function knowledge. Then, CAD assembly model is represented by part attributed adjacency graph and partitioned into multiple functional regions. Assembly region and flow-activity region are defined for structure-function correlations analysis of CAD assembly model. Meanwhile, the extraction process of assembly region and flow-activity region is given in detail. Furthermore, structure-function correlations analysis and functional semantic annotation are achieved by considering comprehensively assembly structure and assembled part shape structure in CAD assembly model. After that, a structure-function relation model is established based on polychromatic sets for expressing explicitly and formally relationships between functional structures, assembled parts and functional semantics.FindingsThe correlation between structure and function is analyzed effectively, and functional semantics corresponding to structures in CAD assembly model are labeled. Additionally, the relationships between functional structures, assembled parts and functional semantics can be described explicitly and formally.Practical implicationsThe approach can be used to help designers accomplish functional semantic annotation of CAD assembly models in model repository, which provides support for functional semantic-based CAD assembly retrieval in the product conceptual design phase. These assembly models can be reused for product structure design and assembly process design.Originality/valueThe paper proposes a novel approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model. Functional structures in assembly model are extracted and analyzed from the point of view of assembly structure and function part structure. Furthermore, the correlation relation between structures, assembled parts and functional semantics is expressed explicitly and formally based on polychromatic sets.

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