The cloud points of various amorphous polyether, polyacrylate, and polysiloxane homopolymers, and a variety of commercially available block copolymers, were measured in CO2 at temperatures from 25 to 65 °C and pressures of ca. 1000−6000 psia. Almost without exception, the solubility of amorphous polymers increases with a decrease in the cohesive energy density, or likewise, the surface tension of the polymer. With this decrease in surface tension, the polymer cohesive energy density becomes closer to that of CO2. Consequently, solubility is governed primarily by polymer−polymer interactions, while polymer−CO2 interactions play a secondary role. The solubility is strongly dependent upon molecular weight for the less CO2-philic polymers. The solubilities of high-molecular-weight poly(fluoroalkoxyphosphazenes) in CO2 were comparable to those of poly(1,1-dihydroperfluorooctylacrylate), one of the most CO2-soluble polymers known.

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Additional policy efforts to help CHOs' development are needed. Recent government investments in public health and primary care alone are not sufficient and could not be sustainable. It will not until long-term self-sustaining mechanisms to relieve an omnipotent government are established, including competent community doctors (GP) system, supportive social insurance reimbursement, appropriate financial incentives to providers, better transparency and accountability, as well as a more regulated referral system, a legitimate, sustainable and quality community health system could be attained.

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Following decades of change in health care structures and modes of funding, China has recently been making pilot reforms to the governance of its public hospitals, primarily by increasing the autonomy of public hospitals and redefining the roles of the health authorities. In this paper, we analyse the historical evolution and current situation of public hospital governance in China, focussing the range of governance models being tried out in pilot cities across China. We then draw on the experiences of public hospital governance reform in a wide range of other countries to consider the nature of the Chinese pilots. We find that the key difference in China is that the public hospitals in the pilot schemes do not receive sufficient funding from government and are able to distribute profits to staff. This creates incentives to charge patients for excessive treatment. This situation has undermined public service orientation in Chinese public hospitals. We conclude that the pilot reforms of governance will not be sufficient to remedy all the problems facing these hospitals, although they are a step in the right direction.

High temperature photoluminescence up to 100°C was demonstrated from the p-doped ten-layer InAs∕InGaAs quantum dot (QD) laser structure. 1.3μm InAs QD lasers were fabricated using pulsed anodic oxidation from this structure. High output power of 882mW and low transparency current density of 5.9A∕cm2∕QD layer were obtained. Ground state (GS) lasing could be maintained from a QD laser with short cavity length of 611μm, corresponding to the maximum modal gain of 23.1cm−1 from this laser system. GS continuous wave operation up to 100°C was also demonstrated from an InAs QD laser (50×2500μm2).