scholarly journals Natural Syringyl Mediators Accelerate Laccase-Catalyzed β-O-4 Cleavage and Cα-Oxidation of a Guaiacyl Model Substrate via an Aggregation Mechanism

ACS Omega ◽  
2021 ◽  
Author(s):  
Xu Chen ◽  
Xingyu Ouyang ◽  
Jiayi Li ◽  
Yi-Lei Zhao
Keyword(s):  
Aggregation Mechanism

Marginal and average weight-enabled data aggregation mechanism for the resource-constrained networks

2021 ◽  
Vol 174 ◽  
pp. 101-108
Author(s):  
Syed Roohullah Jan ◽  
Rahim Khan ◽  
Fazlullah Khan ◽  
Mian Ahmad Jan ◽  
Mohamamd Dahman Alshehri ◽  
...  
Keyword(s):  
Data Aggregation ◽  
Average Weight ◽  
Resource Constrained ◽  
Aggregation Mechanism

Discovery of a dual pathway aggregation mechanism for a therapeutic constrained peptide

2021 ◽  
Author(s):  
Tao Chen ◽  
Shijia Tang ◽  
Elizabeth S. Hecht ◽  
Chun-Wan Yen ◽  
Nisana Andersen ◽  
...  
Keyword(s):  
Aggregation Mechanism ◽  
Dual Pathway

An analysis of chick limb bud intercellular adhesion underlying the establishment of cartilage aggregates in suspension culture

1990 ◽  
Vol 96 (3) ◽  
pp. 527-536
Author(s):  
J.A. Bee ◽  
K. von der Mark
Keyword(s):  
Cell Surface ◽  
Cell Aggregation ◽  
Intercellular Adhesion ◽  
Limb Bud ◽  
Affinity Column ◽  
Type I ◽  
Surface Plasma ◽  
Aggregation Mechanism ◽  
Fab Fragments ◽  
Exogenous Calcium

To examine the mechanism of intercellular adhesion in the establishment of limb skeletal elements we have investigated the process of limb bud cell aggregation in vitro. Limb bud cells are aggregation-competent immediately after their trypsin:collagenase dissociation in the absence of calcium. This aggregation is largely Ca2(+)-independent (CI) and is completely and reversibly inhibited by cycloheximide. In contrast, when limb bud cells are first allowed to recover from Ca2(+)-free trypsin:collagenase dissociation, aggregation of the surviving population is exclusively Ca2(+)-dependent (CD) and completely and reversibly inhibited by cycloheximide. The presence of exogenous calcium during initial cell dissociation retains a functional CD aggregation mechanism. However, incubation of such cells with EGTA releases the CD component and converts the cells to a predominantly CI aggregation. Rabbits were immunized with limb bud cells exhibiting the recovered CD aggregation mechanism and the resulting immune sera were screened for their effect on cell aggregation. Relative to pre-immune sera, intact immune IgG agglutinated dissociated limb bud cells whilst immune Fab fragments inhibited their aggregation. The aggregation-inhibiting antiserum recognizes five major limb bud cell surface components with apparent molecular weights of 72K, 50K, 23K, 14.5K and 8.5K (K = 10(3) Mr), respectively. Limb bud cell surface plasma membranes were isolated by sucrose gradient density centrifugation and detergent-solubilized proteins coupled to Sepharose 4B with cyanogen bromide. Equivalent cell surface plasma membrane proteins were 125I-iodinated and applied to the affinity column. Limb bud cell surface protein affinity chromatography in the presence of exogenous calcium yields a single protein with an apparent molecular weight of approximately 8.5 K. This protein molecule elutes at 0.6 M NaCl, indicating a high affinity, is recognized by the aggregation-inhibiting antiserum, and is itself capable of inhibiting CD limb bud cell aggregation. Fab fragments prepared from rabbit antisera specifically directed against the affinity-purified material also inhibit CD limb bud cell aggregation and this inhibition is neutralized by the 8.5 K protein. Our data thus demonstrate that CD limb bud cell aggregation is not mediated by fibronectin and/or collagen type I and indicate that this process is governed by a novel 8.5 K cell adhesion molecule.

Ions-induced ovalbumin foaming properties enhancement: Structural, rheological, and molecular aggregation mechanism

2022 ◽  
Vol 124 ◽  
pp. 107221
Author(s):  
Ting Zhang ◽  
Min Zhang ◽  
Ping Gong ◽  
Hongyu Jiang ◽  
Jingbo Liu ◽  
...  
Keyword(s):  
Foaming Properties ◽  
Molecular Aggregation ◽  
Aggregation Mechanism

scholarly journals A Novel Packet Aggregation Mechanism for Enhancing VoIP Performance on IEEE 802.11 Wireless Mesh Networks

2020 ◽  
Vol 8 (8) ◽  
pp. 01-08
Author(s):  
Guan-Hsiung Liaw et al.
Keyword(s):  
Ieee 802.11 ◽  
Mesh Networks ◽  
Mesh Network ◽  
Time Intervals ◽  
Aggregation Mechanism ◽  
Packet Aggregation ◽  
Wireless Mesh ◽  
Aggregation Scheme ◽  
Voice Data ◽  
The Voice

In 802.11 Wireless Mesh Network (WMN), bandwidth will be wasted much for transferring VoIP flows since each voice frame must contain relatively large amount of protocol data. “Packet Aggregation” mechanism can be applied to merge the voice data of multiple VoIP flows into one frame for transmission. It reduces the waste on bandwidth and increases the maximum number of successful VoIP calls. In addition, the mechanism “MCF controlled channel access” (MCCA) defined in 802.11 standard can be used to obtain better QoS than adopting default EDCA mechanism. In MCCA, mesh stations which wants to transfer VoIP flows can reserve time intervals of the medium for transmission and this reservation will be advertised to their neighbors. It is why MCCA causes less medium contentions than EDCA. In this paper, a mechanism to transfer VoIP flows in IEEE 802.11 WMN by MCCA with packet aggregation scheme is proposed. The effectiveness of the proposed mechanism is shown by simulation results. In addition, the problem named as Routing-Packet Aggregation / De-aggregation-Scheduling optimization problem (abbr. RPADS problem) derived from the proposed mechanism is also studied. A heuristic algorithm for RPADS problem to maximize the total number of supported calls is also proposed.

Developing Equipment Manufacturing Industry Based on Service-Oriented Manufacturing

2013 ◽  
Vol 655-657 ◽  
pp. 2340-2343
Author(s):  
Li Xi Yang ◽  
Xu Fang Zhou
Keyword(s):  
Manufacturing Industry ◽  
Value Added ◽  
Present Situation ◽  
Advanced Manufacturing ◽  
Aggregation Mechanism ◽  
Equipment Manufacturing ◽  
Equipment Manufacturing Industry ◽  
Service Oriented ◽  
Manufacturing Mode ◽  
Insight Into

Service-oriented manufacturing is an advanced manufacturing mode focused on integrating service with manufacturing. The remarkable importance is known to be strongly associated with the development of service-oriented economy in the period in which China transfers the traditional equipment manufacturing industry to the service-oriented manufacturing. We take a close insight into basic theories of service-oriented manufacturing, and then we analyze the characteristics, profiles, as well as the present situation of the equipment manufacturing. Finally, we propose some countermeasures for transferring the equipment manufacturing to the service-oriented manufacturing from the views of the aggregation mechanism, the network of innovative mechanism and manufacturing value-added chain.

Correlative pattern based data aggregation mechanism for WSN

2016 ◽  
Vol 31 (2) ◽  
pp. 991-999
Author(s):  
Chang Liu ◽  
Juan Luo ◽  
Yanchao Song
Keyword(s):  
Data Aggregation ◽  
Aggregation Mechanism
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