scholarly journals Emergence of Regional Clusters: The Role of Spinoffs in the Early Growth Process

2013 ◽  
Author(s):  
Michael S. Dahl ◽  
Christian R. Østergaard ◽  
Bent Dalum
Keyword(s):  
Growth Process ◽  
Early Growth ◽  
Regional Clusters

The early growth process of helium blistering in tungsten and molybdenum: First-principles and statistical model calculations

2021 ◽  
Vol 550 ◽  
pp. 152938
Author(s):  
Kun Jie Yang ◽  
Yue-Lin Liu ◽  
Hai-Hong Li ◽  
Peng Shao ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Statistical Model ◽  
First Principles ◽  
Growth Process ◽  
Early Growth ◽  
Model Calculations

scholarly journals Synthesis of Platinum Nanocrystals within Iodine Ions Mediated

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Jiamao Li ◽  
Jingwei Hou ◽  
Yu Gong ◽  
Chengjian Xiao ◽  
Lei Yue ◽  
...  
Keyword(s):  
Shape Control ◽  
Growth Process ◽  
Growth Stage ◽  
Nucleation Stage ◽  
Platinum Nanocrystals ◽  
High Resolution Tem ◽  
Pt Nanocrystals ◽  
High Concentrations ◽  
Insight Into

A liquid-phase reducing method of synthesizing Pt nanocrystals was demonstrated, and dendrite-, cube-, and cuboctahedron-shaped Pt nanocrystals (NCs) with well-defined monomorphic were successfully synthesized through iodine ions mediated with the CTAB agent. When the KI concentration was increased to thirty times of K2PtCl4 at the nucleation stage, the high-quality Pt nanodendrites could be obtained. However, no matter how many KI were added at the growth age, only cube- and cuboctahedron-shaped Pt nanocrystals formed. The results of high-resolution TEM, EDX, and XRD indicated that the size and shape of Pt NCs could be turned by changing the concentration and time of KI. In the nucleation stage, it might be due to that some iodine ions adsorb on the surfaces of Pt NCs, which probably cause the rapid growth process resulting in the formation of Pt nanodendrites. In the growth stage, although high concentrations of I− ions could contribute to the shape control and generate bigger particles of Pt NCs, small Pt particles do not grow into dendrites. The insight into the role of I− ions in synthesis of Pt NCs reported here provided a viewpoint for clearly understanding the formation mechanism of anisotropic platinum nanostructures.

scholarly journals Competitiveness of healthcare institutions of regional clusters in the global crises era of COVID-19

2021 ◽  
Vol 129 ◽  
pp. 08015
Author(s):  
Natalia Pashkus ◽  
Nadegzda Starobinskaya ◽  
Petr Shvetc
Keyword(s):  
Value Added ◽  
Specific Region ◽  
Matrix Analysis ◽  
Negative Consequences ◽  
Healthcare Organizations ◽  
Global Competitiveness ◽  
Regional Clusters ◽  
Regional Medical ◽  
Significant Factors

Background of the study: In the current situation of the global COVID-19 pandemic the role of a strong medical cluster operating in a specific territory in a specific region or even in a country is incredibly increasing. A strong regional medical cluster in these conditions determines the level of health of the population, the ability to cope with the serious challenges of the pandemic and minimize its negative consequences, both the health of citizens and the economy of the region. Purpose of the article: The purpose of this paper is to determine the factors that have the strongest impact on the competitiveness of medical organizations in the region in the new conditions of a pandemic and its consequences, as well as to identify promising mechanisms for its assessment and ranking. Methods: In this work, methods of statistical, strategic and matrix analysis are used, on the basis of which the factors of competitiveness of healthcare organizations in the region can be determined and ranked, which makes it possible, by ranking, to identify the most significant of them during the COVID-19 pandemic and its consequences. Findings & Value added: The results of this study made it possible to test new mechanisms for assessing the competitiveness of healthcare institutions in the new conditions of a pandemic and to study the influence of the most significant factors of competitiveness on the regional and global competitiveness of the region in the conditions of COVID-19.

The role of initial cells in maize anther morphogenesis

Development ◽  
1992 ◽  
Vol 116 (4) ◽  
pp. 1077-1085 ◽  
Author(s):  
R.K. Dawe ◽  
M. Freeling
Keyword(s):  
Cell Division ◽  
Small Groups ◽  
Cell Movement ◽  
Basic Structure ◽  
Early Growth ◽  
Structural Template ◽  
Axes Of Symmetry ◽  
The Relationship ◽  
Mature Anther

The near absence of cell movement in plants makes clonal analysis a particularly informative method for reconstructing the early events of organ formation. We traced the patterns of cell division during maize anther development by inducing sector boundaries that preceded the earliest events of anther initiation. In doing this, we were able to estimate the smallest number of cells that are fated to form an anther, characteristic cell division patterns that occur during anther morphogenesis, and the relationship between the pre-existing symmetry of the initial cells and the final symmetry of the mature anther. Four general conclusions are made: (1) anthers are initiated from small groups of 12 or fewer cells in each of two floral meristematic layers; (2) the early growth of the anther is more like a shoot than a glume or leaf; (3) cell ancestry does not dictate basic structure and (4) the orientation of initial cells predicts the orientation of the four pollen-containing microsporangia, which define the axes of symmetry on the mature anther. The final point is discussed with other data, and an explanation involving a ‘structural template’ is invoked. The idea is that the orientation of initial cells within the floral meristem establishes an architectural pattern into which anther cells are recruited without regard to their cellular lineages. The structural template hypothesis may prove to be generally applicable to problems of pattern formation in plants.

The Role of Early Growth Response 1 in the Prognostic Value and Cell Migration of Breast Cancer

2021 ◽  
Author(s):  
Leiyu Hao ◽  
Fengru Huang ◽  
Xinqian Yu ◽  
Bujie Xu ◽  
Yan Liu ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Migration ◽  
Protein Expression ◽  
Prognostic Value ◽  
Growth Response ◽  
Expression Patterns ◽  
Early Growth ◽  
The Cancer Genome Atlas ◽  
Early Growth Response

Abstract Background: Early growth response family members (EGRs), EGR1-4, have increasingly attracted attention in multiple cancers. However, the exact expression patterns and prognostic values of EGRs in the progress of breast cancer (BRCA) remain largely unknown. Methods: The mRNA expression and prognostic characteristics of EGRs were examined by the Cancer Genome Atlas (TCGA), Oncomine and Kaplan-Meier plotter. Enrichment analyses were conducted based on protein-protein interaction (PPI) network. The Tumor Immune Estimation Resource (TIMER) database and MethSurv were further explored. The protein expression level of EGR1 and cell migration were measured by Western blotting, immunohistochemistry, wound-healing assay and Boyden chamber assay in BRCA. Results: The transcriptional levels of EGR1/2/3 displayed significantly low expression in BRCA compared to that in normal tissues, while EGR4 was shown adverse expression pattern. Survival analysis revealed up-regulated EGR1-4 were remarkably associated with favorable relapse-free survival (RFS). A close correlation with specific tumor-infiltrating immune cells (TIICs) and several CpG sites of EGRs were exhibited. Immunohistochemistry assays showed that the protein expression of EGR1 was remarkably downregulated in BRCA compared to that in paracancerous tissues. Cell migration of MCF10A cells was increased after the silence of EGR1 by siRNA transfection.Conclusions: This study provides a novel insight to the role of EGR1 in the prognostic value and cell migration of BRCA.

Conclusion and Recommendations

2014 ◽  
pp. 226-238
Keyword(s):  
Economic Growth ◽  
Growth Process ◽  
Financial Sector ◽  
Policy Implications ◽  
Future Research ◽  
Financial Sector Development ◽  
Research Findings ◽  
Potential Channels

This book started with a brief review of different outlooks on the role of financial sector development in the process of economic growth. Then it highlighted the fact that recent studies, particularly those originating from modern growth theory, suggest that financial intermediation affects growth through various channels. To test this proposition, an empirical model was built, data were obtained, empirical tests were carried out, and results were discussed. The final chapter in this book, therefore, summarises key research findings and discusses the potential channels through which financial sector development affects the economic growth process. The chapter further highlights contributions of this research to growth studies, discusses policy implications arising from the findings of this research, and provides directions for future research and analysis.

The Compound Marine Steam Engine: A Study in the Relationship Between Technological Change and Economic Development

1967 ◽  
Vol 27 (4) ◽  
pp. 615-617 ◽  
Author(s):  
Ramon Knauerhase
Keyword(s):  
Economic Development ◽  
Technological Change ◽  
Growth Process ◽  
Steam Engine ◽  
Adoption And Diffusion ◽  
The Cost ◽  
The Relationship ◽  
And Diffusion ◽  
Sailing Ship

One of the most important problems in the study of economic development is the role of technological change in the growth process. My dissertation is an analysis of some of the major variables which influenced the timing of the invention, adoption, and diffusion of the compound marine steam engine. The problem was divided into three parts: (1) all those variables pertaining directly to the invention of the engine, and the very first effects on the cost structure of the steamship industry; (2) the role of the compound marine steam engine in the growth of the German merchant fleet, 1872–1887, with special emphasis on the diffusion of the invention and its productivity effects; and (3) the effect of the compound steam engine on the sailing ship component of the German merchant fleet.

Sign in / Sign up

Export Citation Format

Share Document