Can Facebook really be a tool for supporting citizen engagement during emergencies?

The present study explores how Italian regions and their presidents employed Facebook during the Covid-19 pandemic to encourage citizen engagement. To do so, it adopts quantitative methodologies. Our results show that most public actors increased their levels of social activity during the pandemic but mainly for promoting public communication and that citizens much prefer interacting with presidents. Moreover, citizen engagement was higher when posts were published during nonbusiness hours or weekends, while it decreased when posts contained photos or videos.     

Antibiotics and probiotics in chronic pouchitis:A comparative proteomic approach

AIM:To profile protein expression in mucosal biopsies from patients with chronic refractory pouchitis following antibiotic or probiotic treatment,using a comparative proteomic approach. METHODS:Two-dimensional polyacrylamide gel electrophoresis and matrix-assisted laser desorption/ ionization-time of flight mass spectrometry were used to characterize the changes related to antibiotic therapy in the protein expression profiles of biopsy samples from patients with chronic refractory pouchitis.The same proteom...     

The Strategic Hub Concept: Plan C for Iraq?

This article will apply what shall be termed a “strategic hub” concept of counterinsurgency to the war in Iraq. This concept posits that the development of insurgent and militia nodes or “hubs” of activity could provide a more relevant way to address the key dilemmas of the Iraq equation in light of the Coalition and Iraq government's inability to secure Iraq. The article will argue that ceding the insurgency and militias ground on a temporary basis may be required to maintain both military and political momentum in the post “surge” Iraq given the draw down of U.S. forces, the immaturity of the Iraqi Security Forces, and the present state of American and Iraqi politics.     

Effectiveness of Connected Legislators

Important work has been done to measure legislative effectiveness in the U.S. Congress and to explain the individual characteristics that drive it. Much less attention, however, has been devoted to study the extent to which legislative effectiveness depends on the legislators' social connections. We address this issue with a new model of legislative effectiveness that formalizes the role of social connections, and we test its predictions using the network of cosponsorship links in the 109th–113th Congresses. We propose a new empirical strategy that addresses network endogeneity by implementing a two-step Heckman correction based on an original instrument: the legislators' alumni connections. We find that social connections are a significant determinant of legislative effectiveness. We also study the influence of legislators' characteristics in shaping the network effects. In doing so, we provide new insights into how social connectedness interacts with factors such as seniority, partisanship, and legislative leadership in determining legislators' effectiveness.     

Microwave-assisted extraction and differential scanning calorimetry in the chemical identification of sliming agents apprehended in the south region of Brazil

Over the past decades, consume of slimming agents considerably increased in several countries, including Brazil, due to weight-loss and stimulant properties. Since these drugs are controlled to prevent illicit and indiscriminate use, there is a parallel illegal market that uses the Internet and irregular pharmacies in order to distribute these formulations. Slimming agents produced by these illegal sources are known for being manufactured with little or none quality control resulting in uncertain and unknown formulations. For forensic purposes, apprehended pharmaceuticals have to undergo a process of chemical identification that can be difficult due to its complex matrix. In this sense, application of assisted energies in the extraction step such as microwave irradiation can be a promising method to increase the recuperation of the target molecules of the sample. Therefore, the aim of this research was to identify four slimming agents apprehended in Brazil by means of visual inspection, Fourier Transform Infrared Spectroscopy, Differential Scanning Calorimetry and Gas Chromatography – Mass Spectrometry. Moreover, the efficiency of solid-liquid extraction and microwave-assisted extraction was compared. It should be noted that our work was one of the few to use Differential Scanning Calorimetry and the application of microwave irradiation in the analysis of apprehended materials. Results showed that the majority of the samples was counterfeit being composed of one or several adulterants or contaminants. Initially, visual inspection resourcefully screened the slimming agents for possible signs of falsification, however it failed to detect fraudulent products that were very similar to veridical medicines. Sequentially, Fourier Transform Infrared Spectroscopy detected functional groups present in the samples while the presence or absence of the alleged active ingredients were successfully measured with Differential Scanning Calorimetry and, thus, providing a full chemical screening of the apprehended materials. Gas Chromatography- Mass Spectrometry confirmed the presence of adulterants such as caffeine, fluoxetine and phenolphthalein as well as contaminants such as sulfurol in the falsified samples. Finally, comparison of extraction procedures indicated that microwave-assisted extraction increased the recovery of compounds detected in chromatographic analysis to a greater extent than solid-liquid extraction.