In this paper, a simple and effective route for the synthesis of silver dendritic nanostructures by means of ultrasonic irradiation has been developed. Well-defined silver dendritic nanostructures were obtained by sonicating the aqueous solution of 0.04mol/L silver nitrate with 4.0mol/L isopropanol as reducing agent and 0.01mol/L PEG400 as disperser for 2h. The effects of the irradiation time, the concentration of Ag(+) and the molar ratio of PEG to AgNO(3) on the morphology of silver nanostructures were discussed. The structures of the obtained samples were characterized by transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray powder diffraction (XRD), and the chemical composition of the dendrites was examined by energy-dispersive X-ray spectrum (EDS).

BackgroundWith the advent of tyrosine kinase inhibitors (TKIs), the prognosis of chronic myeloid leukemia (CML) seems to have dramatically improved over the last two decades. Accurate information of the global burden of CML is critical for direct health policy and healthcare resource allocation in the era of high-cost TKI therapy.ObjectiveThis study aimed to evaluate the health burden of CML at global, regional, and national levels from 1990 to 2017.MethodsWe collected data of CML between 1990 and 2017 from the Global Burden of Disease (GBD) study 2017 including, annual incidence, disease-related mortality, and disability-adjusted life-years (DALY), and the corresponding age-standardized rates (ASRs). To summarize the results, countries were categorized by sociodemographic index (SDI) quintiles and 21 GBD regions.ResultsIn 2017, an estimated 34,179 [95% Uncertainty Interval (UI), 31,516–36,714) incident cases of CML were recorded, and 24,054 (95%UI, 22,233–26,072) CML-related deaths were reported worldwide. Both, the age-standardized incidence rate (ASIR) and age-standardized death rate (ASDR) steadily decreased from 1990 to 2017, with estimated annual percentage changes (EAPCs) of −2.39 (95%UI, −8.13–3.71) and −2.74 (95%UI, −9.31–4.31), respectively. The global incidence and mortality of CML in males were higher than that in females. The ASRs varied substantially across regions, with the highest burden in Andean Latin America, Central Sub-Saharan Africa, and Southeast Asia. Besides, the ASRs decreased most obviously in the high-SDI regions compared to non-high-SDI regions. Moreover, the lower the SDI, the higher was the proportion of deaths in the younger age groups.ConclusionDespite the decreasing trends of ASRs of CML from 1990 to 2017, the health-related burden of CML remains a challenge for the low-SDI regions. These findings highlight that appropriate strategies should be adopted in low-SDI countries to reduce the ASRs of CML.

This article examines two competing theories explaining the effects of political satire on citizens in an authoritarian context. The “activism” proposition argues that political satire works as a form of resistance to erode people’s support for the regime and encourages collective action. The “cynicism” proposition argues that while satire discourages regime support, it also discourages political participation. Our online survey experiment on young Chinese Internet users provides evidence supporting the cynicism proposition. Satire consumption reduces audiences’ political trust, deflates their political efficacy, and discourages them from participating in politics, as it reduces the perceived severity of political problems and implies that audience participation is useless. We conclude that the dissemination of political satire may stabilize the authoritarian regime temporarily but induces it to become erosive in the long run.

Using a detailed case study of house eviction in peri-urban China as well as original data from an online survey experiment, this article explores the opportunistic bargaining phenomenon in China in which citizens leverage the policy priorities of authorities with tactics that are not approved by the state to bargain for goals beyond those promised by the state. We find that opportunistic bargaining is widely accepted by Chinese citizens and that such an inclination is encouraged by successful precedents and clear signals of an opening through which to leverage government policy priorities; however, it is dampened by unclear signals and failed precedents. We also find that opportunistic bargainers tend to hold more negative perceptions of the current regime and are less likely to abide by state rules or social norms. The characteristics of opportunistic bargaining appear to be the opposite of the dominant “rightful resistance” framework.

Autocracies can conduct “strategic censorship” online by selectively targeting different types of content and by adjusting the level of information control. While studies have confirmed the state’s selective targeting behavior in censorship, few have empirically examined how the autocracies may adjust the control level. Using data with a 6-year span, this paper tests whether the Chinese state scales up control over citizenry complaints in reaction to a series of socio-political events. The results show that instead of responding to mass protests and major disasters as previous studies have suggested, the state tends to adjust the control level because of political ceremonies, policy shifts, or leadership changes. The findings help refine the strategic censorship theory and offer a granular understanding of the motives and tactics of authoritarian information control.