Extended Chemical CrossLinking of a Thermoplastic Polyimide: Macroscopic and Microscopic Property Development

The phenomenon of urbanization of cities has been the subject of numerous studies and evaluation protocols proposing to analyze the degree of economic and social sustainability of development projects. Through careful research and synthesis of the theoretical framework regarding residential properties’ performance measurement and forecasting, this paper goes deeper into the proposition of property development as an asset class that represents the biggest share of the Italian property market and yet is avoided by the big portfolios. The analysis model was applied to the city of Milan and its Metropolitan Area. The method is based on the development of correlation indices to evaluate different behaviors, through time and a Geographic Information System (GIS) based on the Hedonic Price Method (HPM). Results from a hedonic model estimated for several recent years suggest that, depending on the particular view, the relation between the rent/price performance and the different external and intrinsic variables can represent a useful parameter for evaluating the feasibility of different real estate investments.

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Monodispersed colored polymer latex particles with film formation and chemical crosslinking for application on textile binder-free printing

Colloids and Surfaces A Physicochemical and Engineering Aspects ◽

10.1016/j.colsurfa.2021.126527 ◽

2021 ◽

pp. 126527

Author(s):

Yi Yang ◽

Min Li ◽

Shaohai Fu

Keyword(s):

Film Formation ◽

Chemical Crosslinking ◽

Latex Particles ◽

Binder Free ◽

Polymer Latex

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Three-Dimensional Printable Hydrogel Using a Hyaluronic Acid/Sodium Alginate Bio-Ink

Polymers ◽

10.3390/polym13050794 ◽

2021 ◽

Vol 13 (5) ◽

pp. 794 ◽

Cited By ~ 1

Author(s):

Su Jeong Lee ◽

Ji Min Seok ◽

Jun Hee Lee ◽

Jaejong Lee ◽

Wan Doo Kim ◽

...

Keyword(s):

Tissue Engineering ◽

Hyaluronic Acid ◽

Sodium Alginate ◽

Three Dimensional ◽

Fibroblast Cell ◽

Chemical Crosslinking ◽

Fibroblast Cell Line ◽

Engineering Applications ◽

Encapsulated Cells ◽

Crosslinking Agents

Bio-ink properties have been extensively studied for use in the three-dimensional (3D) bio-printing process for tissue engineering applications. In this study, we developed a method to synthesize bio-ink using hyaluronic acid (HA) and sodium alginate (SA) without employing the chemical crosslinking agents of HA to 30% (w/v). Furthermore, we evaluated the properties of the obtained bio-inks to gauge their suitability in bio-printing, primarily focusing on their viscosity, printability, and shrinkage properties. Furthermore, the bio-ink encapsulating the cells (NIH3T3 fibroblast cell line) was characterized using a live/dead assay and WST-1 to assess the biocompatibility. It was inferred from the results that the blended hydrogel was successfully printed for all groups with viscosities of 883 Pa∙s (HA, 0% w/v), 1211 Pa∙s (HA, 10% w/v), and 1525 Pa∙s, (HA, 30% w/v) at a 0.1 s−1 shear rate. Their structures exhibited no significant shrinkage after CaCl2 crosslinking and maintained their integrity during the culture periods. The relative proliferation rate of the encapsulated cells in the HA/SA blended bio-ink was 70% higher than the SA-only bio-ink after the fourth day. These results suggest that the 3D printable HA/SA hydrogel could be used as the bio-ink for tissue engineering applications.

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The influence of cronyism on entrepreneurial resource acquisition

Asia Pacific Journal of Management ◽

10.1007/s10490-021-09769-7 ◽

2021 ◽

Author(s):

Junfan Yu ◽

Saskia De Klerk ◽

Michael Hess

Keyword(s):

Community Involvement ◽

Private Property ◽

Resource Acquisition ◽

Property Development ◽

Network Utilization ◽

Start Up ◽

Entrepreneurial Strategies ◽

Staged Model ◽

The Impact

AbstractThis research focuses on how entrepreneurs utilize cronyism to acquire resources. A case study method allowed us to explore three firms in the private property development industry in China. These firms uniquely cultivated cronyism and achieved distinctly different outcomes. Our findings highlight Chinese entrepreneurs in start-up ventures and later-stage enterprises employ cronyism. The underlying rationale for using cronyism have common and heterogeneous motivations. The similarity and distinguishing rationale also apply to the impact of cronyism. We also find two contingency working mechanisms for cronyism: entrepreneurial characteristics and a staged model for cronyism. With the firm’s growth, cronyism remains important, but firms with more community involvement outperform others. This research contributes to the theory on strategic network utilization for resource acquisition during entrepreneurial development stages. We investigate how entrepreneurial strategies can assist in adapting to the “rules of the game” while utilizing resources within the set contextual constraints.

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