A sustainability assessment of five major food crops' water footprints in China from 1978 to 2010

Rice, wheat, corn, soybeans, and sorghum are the five major crops in China, which account for 92% of the country's total grain production and 33% of its water consumption. Combining water footprint analysis tools with sustainability assessment tools, the water sustainability of the five major crops can be analyzed. Based on ecological economics theory, this paper constructs a sustainability evaluation system of China's five major crops' water footprints and analyzes the national and provincial diversity of the sustainability of the five major crops' water footprints using three dimensions: scale, distribution, and equity. We find that the interprovincial distribution equity sustainability divergence is the key bottleneck factor that restricts sustainability (more than scale and configuration). One key strategy is to arrange grain production at the national level, on the basis of considering the differences of water-resource endowment between different provinces to break through the bottleneck of the water-resource distribution sustainability of these five major food crops. This paper determines a general management model that can improve the sustainability of water resource management at the interprovincial level by comparing and analyzing the most sustainable and least sustainable provinces for the water footprint production of these five major crops

Effects of Anacetrapib in Patients with Atherosclerotic Vascular Disease

BACKGROUND: Patients with atherosclerotic vascular disease remain at high risk for cardiovascular events despite effective statin-based treatment of low-density lipoprotein (LDL) cholesterol levels. The inhibition of cholesteryl ester transfer protein (CETP) by anacetrapib reduces LDL cholesterol levels and increases high-density lipoprotein (HDL) cholesterol levels. However, trials of other CETP inhibitors have shown neutral or adverse effects on cardiovascular outcomes. METHODS: We conducted a randomized, double-blind, placebo-controlled trial involving 30,449 adults with atherosclerotic vascular disease who were receiving intensive atorvastatin therapy and who had a mean LDL cholesterol level of 61 mg per deciliter (1.58 mmol per liter), a mean non-HDL cholesterol level of 92 mg per deciliter (2.38 mmol per liter), and a mean HDL cholesterol level of 40 mg per deciliter (1.03 mmol per liter). The patients were assigned to receive either 100 mg of anacetrapib once daily (15,225 patients) or matching placebo (15,224 patients). The primary outcome was the first major coronary event, a composite of coronary death, myocardial infarction, or coronary revascularization. RESULTS: During the median follow-up period of 4.1 years, the primary outcome occurred in significantly fewer patients in the anacetrapib group than in the placebo group (1640 of 15,225 patients [10.8%] vs. 1803 of 15,224 patients [11.8%]; rate ratio, 0.91; 95% confidence interval, 0.85 to 0.97; P=0.004). The relative difference in risk was similar across multiple prespecified subgroups. At the trial midpoint, the mean level of HDL cholesterol was higher by 43 mg per deciliter (1.12 mmol per liter) in the anacetrapib group than in the placebo group (a relative difference of 104%), and the mean level of non-HDL cholesterol was lower by 17 mg per deciliter (0.44 mmol per liter), a relative difference of -18%. There were no significant between-group differences in the risk of death, cancer, or other serious adverse events. CONCLUSIONS: Among patients with atherosclerotic vascular disease who were receiving intensive statin therapy, the use of anacetrapib resulted in a lower incidence of major coronary events than the use of placebo. (Funded by Merck and others; Current Controlled Trials number, ISRCTN48678192 ; ClinicalTrials.gov number, NCT01252953 ; and EudraCT number, 2010-023467-18 .)

The effect of the urban wastewater treatment ratio on agricultural water productivity: based on provincial data of China in 2004–2010

Abstract China’s urbanization has always required the support of rural areas. By 2014, urban wastewater pollution had become a serious problem in China and this drew the public’s attention to the urban water environment. As a result, the government now requires a new type of urbanization, with simultaneous development of high-quality rural areas. Improving the economic, social and environmental influence of urban development on rural areas helps to improve urbanization and make rural areas more sustainable. This article focuses on a particular question: Have urban wastewater emissions affected the efficiency of agricultural water use? Using provincial panel data for 2004–2010, we analyze how the increase in the urban wastewater treatment ratio has changed China’s agricultural water productivity. The effect is shown to be prominent, irrespective of whether the urbanization ratio is high or low. This effect is most significant when the urbanization ratio is highest or when society pays more attention to urban environmental governance. The influence has regional heterogeneity and is also affected by various other policy settings. The results provide helpful guidance for cities as they focus on rural impacts as part of the new type of urbanization policies

Explaining Individual Subjective Well-Being of Urban China Based on the Four-Capital Model

A growing body of literature explains subjective well-being (SWB) from different perspectives. The statement of “built, human, social, and natural capital are necessary determinants of SWB” is named the four-capital model. Based on a cross-sectional dataset in 2013, which included 3293 individuals and covered the urban areas of most provinces in China, this paper employs the four-capital model to explain individual SWB of urban China. We select individual income and household income per capita as proxies of built capital; physical health and education as proxies of human capital; social connection and social trust as proxies of social capital; and air quality as a proxy of natural capital. In the four-capital model, household income per capita and physical health have almost the same and larger positive impacts on individual SWB of urban China; social connection, social trust, and air quality have smaller and diminishing positive impacts on individual SWB of urban China; and individual income and education are statistically insignificant. The empirical results offer guidance on how to achieve human-centered urbanization for China. This paper provides insights into how to further improve human well-being of urban residents in China and the applicability of the four-capital model in explaining SWB at the individual level

Pyrolysis Mechanism of Ionic Liquid Under Microwave Irradiation and the Formation of N-Doped Carbon

The pyrolysis mechanism of the ionic liquid [BMIm]N(CN)2 under microwave irradiation was discussed for the first time. The trimerization of the anion N(CN)− 2 and the formation of a framework were firstly caused by the microwave irradiation. And then the carbonization of the framework occurred when the temperature reached 330 °C. The pyrolysis product was graphitic nitrogendoped carbon and mainly originated from the anion N(CN)− 2. The nitrogen content and graphitization degree of the nitrogen-doped carbon was relied on the pyrolysis temperature

Enabling Value Co-Creation in the Sharing Economy: The Case of Mobike

The disruptive rise of the sharing economy has inspired multiple social innovations embodying significant potential towards achieving urban sustainability in crucial areas like low-carbon mobility. Increasingly, consumers in such sharing systems participate in activities of value co-creation together with firms and peers, such as through enforcing rules that help maintain trust and reciprocity. Why do people choose to invest their time and energy in co-creating values that may benefit wider social and environmental sustainability in the sharing economy? This study addresses this question through an analysis of an emerging shared mobility community, the innovative socio-economic relationships it has spawned, and the cultural and cognitive forces that underpin these new forms of economic organization and value creation in relation to sustainability. Through a mixed method case study of a newly emerged free-floating bike sharing system in China, called Mobike, the paper explores the main enabling factors which is transforming people from passive product/service receivers to active value co-creators in the sharing economy, such as self-efficacy, cognition of duty, anticipated awards and learning processes. The paper argues that business, social and government organizations may leverage these enabling factors to achieve a more sustainable sharing business and society. Finally, based on quantitative and qualitative data analysis, the article proposes a value co-creation framework between users and firms that involves a clear social learning process on the one hand, and has strong links with social innovations towards sustainability, on the other