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A Structural Case for International Cooperation
Correa, Amelia,Correa, Romar 세종대학교 국제경제연구소 2003 Journal of Economic Integration Vol.18 No.2
We recommend a Bretton Woods system along structural lines. A key component of the case is the substitution of the money transmission mechanism by the credit transmission mechantsm. We suggest that the real exchange rate be the variable of cooperation between countries that are free to set interest rates to pursue domestic policy objectives.
A Structural Case for International Cooperation
( Amelia Correa ),( Romar Correa ) 세종대학교 경제통합연구소 (구 세종대학교 국제경제연구소) 2003 Journal of Economic Integration Vol.18 No.2
We recommend a Bretton Woods system along structural lines. A key component of the case is the substitution of the money transmission mechanism by the credit transmission mechanism. We suggest that the real exchange rate be the variable of cooperation between countries that are free to set interest rates to pursue domestic policy objectives.
Financial Policy Coordination in a Keynesian Framework
Correa, Romar 세종대학교 국제경제연구소 1997 Journal of Economic Integration Vol.12 No.1
We propose a simple framework within which to examine the problem of policy coordination between two central banks. The context is the various components of a broad measure of the money supply. Consider two central banks, one 'monetarist' and the other 'Keynesian'. In each economy there is 'involuntary unemployment' of loans. It is shown that the monetary authorities can strategically vary short-term interest rates in order to relax the constraint in the loan market so that none of the players is worse off. Both the banks play a zero-sum game with regard to foreign exchange reserves. Here too, the central banks can, via their influence on prices, increase the profits of firms providing thereby a credible signal to banks(JEL Classification: E12, E61, F42)
Resistance to Hypoosmotic Shock of Liposomes Containing Novel Pigments from an Antarctic Bacterium
Correa-Llanten, Daniela N.,Amenabar, Maximiliano J.,Blamey, Jenny M. The Korean Society for Microbiology and Biotechnol 2012 한국미생물·생명공학회지 Vol.40 No.3
Although the antioxidant capacity of carotenoids and their role in regulating membrane fluidity have been well studied, their ability to confer resistance to hypoosmotic shock is poorly understood. In this work, we analyzed the effect of a mixture of carotenoid pigments obtained from an Antarctic microorganism belonging to the genus Pedobacter on liposomal resistance to hypoosmotic conditions. Intercalation of pigments into liposomal structures resulted in an improvement of membrane resistance by decreasing the percentage of calcein released in comparison to that by liposomes without pigments. Due to these properties, such pigments could be useful for biotechnological applications.
Anticancer Properties of Psidium guajava - a Mini-Review
Correa, Mariana Goncalves,Couto, Jessica Soldani,Teodoro, Anderson Junger Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.9
Cancer is a complex disease caused by a progressive accumulation of multiple genetic mutations. Consumption of fruits is associated with lower risk of several cancers, which is mainly associated to their phytochemical content. The use of functional foods and chemopreventive compounds seems to contribute in this process, acting by mechanisms of antioxidant, anti-inflammatory, anti-angiogenic and hormonal. The Psidium Guajava has high potential functional related to pigments who are involved in the process of cancer prevention by having antioxidant activity. The aim of the present review is to expose some chemical compounds from P. Guajava fractions and their association with anti-carcinogenic function. The evidences supports the theory of anticancer properties of P. Guajava, although the mechanisms are still not fully elucidated, but may include scavenging free radicals, regulation of gene expression, modulation of cellular signalling pathways including those involved in DNA damage repair, cell proliferation and apoptosis.
( Correa Llanten Daniela ),( Juanita Larrain Linton ),( Patricio A Munoz ),( Miguel Castro ),( Freddy Boehmwald ),( Jenny M Blamey ) 한국미생물생명공학회(구 한국산업미생물학회) 2013 한국미생물·생명공학회지 Vol.41 No.3
A gram-positive, rod-shaped, spore-forming, motile thermophilic bacterium was isolated from a sterilization oven. The microorganism GWE1, formally named Geobacillus wiegelii identified as a member of the genus Geobacillus. GWE1 grew under aerobic conditions of between 60-80ºC (optimum 70ºC), in a pH range of 3.0-8.0 (optimum pH70ºC 5.8), and between 0 and 2 M NaCl (optimum 0.3 M). The membrane polar lipids were dominated by branched saturated fatty acids, which included as the major constituents; iso-15:0 (13.3%), 16:1(ω7) (12.8%), 16:0 (28.5%), iso-17:0 (13.5%) and anteiso-17:0 (12.3%). The DNA G+C content was 47.2 mol% (determined by HPLC). The 16S rRNA gene sequence of GWE1 showed a high similarity with Geobacillus caldoxylosilyticus (97%). However, the level of DNA?DNA relatedness was only 58%. These data suggest that GWE1 is probably a novel specie of the genus Geobacillus.
Resistance to Hypoosmotic Shock of Liposomes Containing Novel Pigments from an Antarctic Bacterium
( Correa Llanten ),( Daniela N. ),( Maximiliano J. Amenabar ),( Jenny M. Blamey ) 한국미생물생명공학회(구 한국산업미생물학회) 2012 한국미생물·생명공학회지 Vol.40 No.3
Although the antioxidant capacity of carotenoids and their role in regulating membrane fluidity have been well studied, their ability to confer resistance to hypoosmotic shock is poorly understood. In this work, we analyzed the effect of a mixture of carotenoid pigments obtained from an Antarctic microorganism belonging to the genus Pedobacter on liposomal resistance to hypoosmotic conditions. Intercalation of pigments intoliposomal structures resulted in an improvement of membrane resistance by decreasing the percentage of calcein released in comparison to that by liposomes without pigments. Due to these properties, such pigments could be useful for biotechnological applications.
BRAIN: A bivariate data-driven approach to damage detection in multi-scale wireless sensor networks
Kijewski-Correa, T.,Su, S. Techno-Press 2009 Smart Structures and Systems, An International Jou Vol.5 No.4
This study focuses on the concept of multi-scale wireless sensor networks for damage detection in civil infrastructure systems by first over viewing the general network philosophy and attributes in the areas of data acquisition, data reduction, assessment and decision making. The data acquisition aspect includes a scalable wireless sensor network acquiring acceleration and strain data, triggered using a Restricted Input Network Activation scheme (RINAS) that extends network lifetime and reduces the size of the requisite undamaged reference pool. Major emphasis is given in this study to data reduction and assessment aspects that enable a decentralized approach operating within the hardware and power constraints of wireless sensor networks to avoid issues associated with packet loss, synchronization and latency. After over viewing various models for data reduction, the concept of a data-driven Bivariate Regressive Adaptive INdex (BRAIN) for damage detection is presented. Subsequent examples using experimental and simulated data verify two major hypotheses related to the BRAIN concept: (i) data-driven damage metrics are more robust and reliable than their counterparts and (ii) the use of heterogeneous sensing enhances overall detection capability of such data-driven damage metrics.
Júlia Correa Raffaini,Eduardo Jose Soares,Rebeca Franco de Lima Oliveira,Rocio Geng Vivanco,Ayodele Alves Amorim,Ana Lucia Caetano Pereira,Fernanda Carvalho Panzeri Pires-de-Souza 대한치과보철학회 2023 The Journal of Advanced Prosthodontics Vol.15 No.5
Purpose. This study aimed to assess and compare the color stability, flexural strength (FS), and surface roughness of occlusal splints fabricated from heat-cured acrylic resin, milled polymethyl methacrylate (PMMA)-based resin, and 3D-printed (PMMA) based-resin. Materials and methods. Samples of each type of resin were obtained, and baseline measurements of color and surface roughness were recorded. The specimens were divided into three groups (n = 10) and subjected to distinct aging protocols: thermomechanical cycling (TMC), simulated brushing (SB), and control (without aging). Final assessments of color and surface roughness and three-point bending test (ODM100; Odeme) were conducted, and data were statistically analyzed (2-way ANOVA, Tukey, P <.05). Results. Across all resin types, the most significant increase in surface roughness (Ra) was observed after TMC (P < .05), with the 3D-printed resin exhibiting the lowest Ra (P < .05). After brushing, milled resin displayed the highest Ra (P < .05) and greater color alteration (∆E00) compared to 3D-printed resin. The most substantial ∆E00 was recorded after brushing for all resins, except for heat-cured resin subjected to TMC. Regardless of aging, milled resin exhibited the highest FS (P < .05), except when compared to 3D-printed resin subjected to TMC. Heat-cured resin exposed to TMC demonstrated the lowest FS, different (P < .05) from the control. Under control conditions, milled resin exhibited the highest FS, different (P < .05) from the brushed group. 3D-printed resin subjected to TMC displayed the highest FS (P < .05). Conclusion. Among the tested resins, 3D-printed resin demonstrated superior longevity, characterized by minimal surface roughness and color alterations. Aging had a negligible impact on its mechanical properties.