Using multiphase fluid flow modeling and time-lapse electromagnetics to improve 4D monitoring of CO 2 in an EOR reservoir

Understanding the changes in the saturation within a reservoir undergoing enhanced oil recovery (EOR) is crucial to optimizing production. We debut a novel, multiphase fluid flow modelling code, TOGA, to assist in modeling gas, oil, and water phases within the reservoir, and combine its output with time-lapse Depth to Surface Resistivity data in a case study involving an EOR reservoir. The results show the potential for combining the two methods to improve our understanding of reservoir saturation over an extended period of time

The Nucleus of Main-Belt Comet 259P/Garradd

We present observations of the main-belt comet 259P/Garradd, previously known as P/2008 R1 (Garradd), obtained in 2011 and 2012 using the Gemini North Telescope on Mauna Kea in Hawaii, and the SOAR Telescope at Cerro Pachon in Chile, with the goal of computing the object's phase function and nucleus size. We find an absolute magnitude of $H_R=19.71\pm0.05$ mag and slope parameter of $G_R=-0.08\pm0.05$ for the inactive nucleus, corresponding to an effective nucleus radius of $r_e=0.30\pm0.02$ km, assuming an $R$-band albedo of $p_R=0.05$. We also revisit observations reported for 259P while it was active in 2008 to quantify the dust mass loss and compare the object with other known main-belt comets

Housing and capital in the 21st Century

Thomas Piketty’s Capital in the 21st Century has attracted public, policy and academic attention. Although there is a growing research literature on the formation, distribution, utilization and wider implications of housing wealth there has been little discussion of Piketty’s work in housing studies. This paper outlines and assesses the major contributions of Piketty, including re-emphasizing distribution and political economy perspectives within economics, modelling growth and distribution, establishing detailed long run patterns of wealth change and policy implications. The paper highlights the significance of shifting housing wealth in increasing inequalities in some countries: housing matters in macro-shifts. We also draw out the implications of house price and wealth growth for the balance of rentier vs. entrepreneurial forms of capitalism. If Piketty’s work is important for housing research, we also argue the converse, that housing research findings can strengthen his analysis. The stylized facts of advanced economy metropolitan growth suggest that housing market processes and wealth outcomes will drive higher inequality and lower productivity into the future unless housing and related policies change markedly. Piketty, strong on evidence and conceptualization is weak on policy development and housing studies can drive more effective assessments of change possibilities

Housing assets and small business investment : exploring links for theory and policy

Housing market activity and firm formation are both positively correlated with the business cycle, and the levels of mortgage lending to business owners and funding of small firms have fallen in the UK since 2008. This paper explores a neglected, causal linkage between housing assets and small business investment and the economy and, in particular, draws attention to the recent reduction in small business investment consequent to a reduced capacity of entrepreneurs to withdraw or leverage housing equity. It draws on secondary data for the UK and interviews with key policy and practice stakeholders for both housing and enterprise.Peer reviewe

Long-term hormone replacement therapy

Reproduced with permission from Australian Prescriber The document attached has been archived with permission from the publisher/copyright holderAlastair H. MacLenna

Hormone replacement therapy: where to now?

Copyright © 2003 Australian Prescriber Reproduced with permission from Australian Prescriber The document attached has been archived with permission from the publisher/copyright holder.The Women's Health Initiative Study was stopped because of safety concerns about hormone replacement therapy with oestrogen and progestogen. There was an increase in breast cancer, however this was not greater than the increase reported in observational studies. Although there was an increase in vascular events, many of the women in the study had pre-existing risk factors for cardiovascular disease. No long-term trials of combined hormone replacement therapy are continuing, so the balance between benefit and harm will remain uncertain. Hormone replacement therapy can still be prescribed for menopausal symptoms and for osteoporosis prevention, but the need for continued use should be reviewed annually.Alastair H. MacLenna