The development of mobile health-care in China

The background for this dissertation is a preliminary discussion on the brief history and current status of China mobile health development, in order to provide reference for China future mobile healthcare. The main research object is the development of China Mobile health. The main results of this study are mainly reflected in four aspects. 1. Through the research and analysis of a large amount of literature, we see that mobile health is in a period of rapid development, new production and service models are emerging, support policies are obvious, and market demand is huge. 2. It is concluded that mobile medicine represents a high proportion in the overall mobile medical products, it shows broad development prospects and prominent potential legal risks, so inquiry mobile medicine has a distinct representative position in the research of mobile medical legal issues. 3. The public is still used to choose the general hospital registration mode, and they do not fully understand the online consultation mode and also remain skeptical of its safety. Operators should vigorously promote the characteristics of their products, not only focusing on common projects, otherwise it will be difficult to win in the medical app industry which has a large base and strong competitiveness. 4. “Ping An good doctor" and the problems existing in the mobile medical market medical app homogenization are relatively serious, user personal information security problems need to be solved, user trust is unsatisfactory and there is a lack of standard foundation, capital management and business model are not mature, all of which make profit more difficult.O quadro contextual desta dissertação é uma discussão preliminar relativa à breve história e o estado atual do desenvolvimento da oferta de serviços de saúde por telemóvel na China, na perspetiva da sua evolução futura. O objeto de investigação é o desenvolvimento a oferta de serviços de saúde por telemóvel na China. Os principais resultados estão refletidos nos seguintes quatro pontos: 1.Percebeu-se que a indústria de oferta de serviços de saúde por telemóvel encontra-se num rápido desenvolvimento onde novas ofertas de produtos e serviços emergem, a sustentação de políticas públicas é óbvia e a procura é elevada; 2.O serviço de consulta médica por telemóvel representa uma elevada proporção no cômputo global de oferta de produtos médicos via telemóvel e há clara evidência na sua evolução como também em possíveis incumprimentos legais de modo que as questões de consultas médicas por telemóvel têm uma representatividade clara nos trabalhos de investigação nesta área. 3.O público continua a preferir o registo para consultas hospitalares via telemóvel e compreendem mal o modo de consulta online e têm dúvidas quanto à sua segurança. Os operadores devem promover vigorosamente as características dos seus novos produtos e não focar nos lugares comuns, caso contrário será difícil ter sucesso na indústria de serviços médicos por telemóveis. 4.O estudo de caso da empresa “Ping Na good doctor” revela os problemas existentes na indústria de serviços médicos por telemóvel, nomeadamente, na segurança de informação dos doentes, na confiança e na gestão de orçamentos de modo que torna difícil a criação de valor

The determinants of capital structure: Empirical evidence from Chinese real estate and construction listed firms in 2016

Abstract Purpose – The purpose of this paper is to investigate the determinants of the capital structures of the Chinese listed real estate and construction firms. Design/methodology – The paper chooses the cross-sectional data from Chinese listed property and construction companies in 2016 to carry out the multiple regression. Findings – The findings confirm that the firms’ total debt ratio is significantly and positively related to the profitability (ROA), firm size (Age and LnAt), and NDTS, while the long-term debt ratio of the listed firms in property and construction sectors statistically increases with the firm size (Age and LnAt) and decreases with profitability (ROA). Both leverage ratios are measured by the book value. Besides, the result shows an insignificant positive relationship between firm tangibility and two leverage ratios and a negative correlation between firm NDTS and the long-term debt ratio. As for the factor of growth opportunities, there is no significantly related to the total debt ratio and the long-term debt ratio. Further, there is no statistical difference in capital structure in real estate and construction firms. Research limitation –The limitation of this paper is the scale of sample selection and the empirical method employed. Value – This paper selects the latest and sufficient cross-sectional data from real estate and construction industries to provide the empirical evidence on the capital structure determinants

Contribution of coherent electron production to measurements of heavy-flavor decayed electrons in heavy-ion collisions

Heavy quarks, produced at early stages of heavy-ion collisions, are an excellent probe of the Quark-Gluon Plasma (QGP) also created in these collisions. Electrons from open heavy-flavor hadron decays (HFE) are good proxies for heavy quarks, and have been measured extensively in the last two decades to study QGP properties. These measurements are traditionally carried out by subtracting all known background sources from the inclusive electron sample. More recently, a significant enhancement of e+e- pair production at very low transverse momenta was observed in peripheral heavy-ion collisions. The production characteristics is consistent with coherent photon–photon interactions, which should also constitute a background source to the HFE measurements. In this article, we provide theoretical predictions for the contribution of coherent electron production to HFEs as a function of transverse momentum, centrality and collision energy in Au+Au and Pb+Pb collisions

Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates.

Metal halide perovskite has emerged as a promising material for light-emitting diodes. In the past, the performance of devices has been improved mainly by optimizing the active and charge injection layers. However, the large refractive index difference among different materials limits the overall light extraction. Herein, we fabricate efficient methylammonium lead bromide light-emitting diodes on nanophotonic substrates with an optimal device external quantum efficiency of 17.5% which is around twice of the record for the planar device based on this material system. Furthermore, optical modelling shows that a high light extraction efficiency of 73.6% can be achieved as a result of a two-step light extraction process involving nanodome light couplers and nanowire optical antennas on the nanophotonic substrate. These results suggest that utilization of nanophotonic structures can be an effective approach to achieve high performance perovskite light-emitting diodes

Hydrolysis of Straw in Ionic Liquids with Acid as Catalyst under Microwave Irradiation

With ionic liquids as solvents and corn straw as raw material, different processes of lignocellulose pretreatment with acid as catalyst were studied under conventional heating/microwave irradiation and the reducing sugar was measured. The results indicated that acid can accelerate hydrolysis reaction of corn straw into reducing sugar with ionic liquids as solvent, and microwave irradiation was more efficient in pretreatment of corn straw than conventional heating. The influences of different acid catalysts, the concentration of acid, temperature, mass ratio of straw/[Bmim]Cl, and the amount of refill water were mainly tested, and the optimum experimental conditions are thus determined

Combining river replenishment and restrictions on groundwater pumping to achieve groundwater balance in the Juma River Plain, North China Plain

In recent years, to alleviate the decline in groundwater levels, extensive restrictions on groundwater pumping have been implemented in the North China Plain (NCP). In September 2018, a large-scale ecological water replenishment project was executed involving 22 rivers and lakes. How to adjust the layout of reduction on groundwater pumping within the context of ecological water replenishment is a key issue to be addressed in the study of groundwater level recovery in the NCP. This study adopted the Juma River Plain in Baoding city as a case study, established a numerical model of river replenishment of groundwater, predicted groundwater level changes over the next 15 years (2021–2035) and quantitatively calculated the impact of river replenishment on groundwater levels. To achieve the goal of an overall groundwater balance by 2035, a suitable groundwater pumping restriction scenario was defined based on the impact of river replenishment on groundwater levels. The results indicated that by 2035, the relative rise in groundwater levels attributed to river replenishment and restrictions on groundwater pumping could reach 3.51 and 2.28 m, respectively. River replenishment significantly impacts groundwater levels, especially those near the river. Under the current groundwater exploitation conditions, river replenishment could ensure groundwater level recovery near the river, which accounts for 15% of the total study area. The goal of an overall groundwater balance by 2035 could be achieved if restrictions on groundwater pumping were superimposed, with an average annual reduction of 56 million m3. This study provides valuable insights into groundwater management across the NCP. The proposed methods are useful for the management of other depleted aquifers recharged via ecological water replenishment

Thermal transport in single silkworm silks and the behavior under stretching

This work reports on the first time study of thermal transport in the axial direction of single silkworm silks. The measured thermal diffusivity of relaxed silkworm silk and thermal conductivity are 0.39 Â 10 À6 to 2.03 Â 10 À6 m 2 s À1 and 0.54-6.53 W m À1 K À1 , respectively. The thermal diffusivity of silkworm silk increases up to 263% upon elongation up to 63.8%. For one of the samples studied (sample 5), the thermal conductivity goes up to 13.1 W m À1 K À1 after elongation of 68.3%, surpassing many other polymers. Three factors combine together to give rise to the remarkable thermal diffusivity increase: alignment improvement of b-sheet blocks, straightening of random coils under stretching, and structural transformation from random coil to b-sheet crystal by elongation (confirmed by our Raman spectroscopy study). Thermal path breakdown is observed when elongation is beyond 63.8%, suggesting that the length of the random coils under relaxed condition is about 61.1% of their real molecular link length. Our Raman spectroscopy study confirms this speculation: after 60% elongation, the Raman frequency started to increase, indicating that the internal strain/stress has been released due to internal structure breakdown