A perturbation density functional theory for the competition between inter and intramolecular association

Using the framework of Wertheim's thermodynamic perturbation theory we develop the first density functional theory which accounts for intramolecular association in chain molecules. To test the theory new Monte Carlo simulations are performed at a fluid solid interface for a 4 segment chain which can both intra and intermolecularly associate. The theory and simulation results are found to be in excellent agreement. It is shown that the inclusion of intramolecular association can have profound effects on interfacial properties such as interfacial tension and the partition coefficient

Off-the-Cuff Law-Making: Policing Pandemic Dispossession in Spain

This article presents a discussion concerning the role of police rationale(s) in Spain within the context of the Covid-19 pandemic, where exceptionalist strategies aimed at curtailing the spread of the virus came to dramatically strengthen existing social divisions. In line with some authors who have already approached this phenomenon from different disciplines, our premise is that most serious emergencies boosted by Covid-19 were not a mere matter of public health, but rather a particularly harmful expression of accumulation by dispossession. Thus, rather than a flaw in the system produced by an exceptional friction between public security and public health, securitarian performances deployed by neoliberal states can be read as symbiotic strategies, from both law and order and business as usual approaches, to manage the social “externalities” of capitalist predatory strategies. As we will argue, phenomena such as the reinforcement of the policing consensus, police production of law, or the authoritarian turn favored by the Covid-19 health crisis must all be analyzed in this context

Iatrogenic salivary duct injury in head and neck cancer patients: report of four cases and review of the literature

Introduction: The lesions of the salivary ducts may be idiopathic, post- traumatic, or iatrogenic and lead to sialocele formation with persistent painful facial swelling or cutaneous fistula formation. No consensus on treatment of this condition exists: the options of treatment include needle aspiration, pressure dressings, antisialogogue therapy, radiotherapy, botulinum toxin and surgical approaches as duct repair, diversion, ligation, different drainage systems and even parotidectomy/submaxilectomy. The management and special features of iatrogenic salivary duct injury in patients with oral cancer who underwent head and neck reconstructive surgery has not been described yet. Material and Methods: We present four cases of iatrogenic lesions of salivary ducts and its management in patients with oral cancer. Conclusions: The iatrogenic lesions of salivary ducts are to be taken into account in patients with oral cancer as the distal ends of salivary ducts could be involved in the margins of surgical resection. Different options of treatment of this complication are described

Research Note : Persistent Salmonella problems in slaughterhouses related to clones linked to poultry companies

Salmonellosis remains one of the main foodborne zoonoses in Europe, with poultry products as the main source of human infections. The slaughterhouse has been identified as a potential source for Salmonella contamination of poultry meat. Despite the mandatory programme of the EU, there are companies with persistent Salmonella that are unable to remove the bacteria from their processing environment, compromising the entire production line. In this context, an intensive sampling study was conducted to investigate a slaughterhouse with persistent Salmonella problems, establishing the genetic relationship among Salmonella strains isolated during the slaughter process. A total of 36 broiler flocks were sampled during processing at the slaughterhouse. Salmonella was identified based on ISO 6579-1:2017 (Annex D), serotyped by Kauffman-White-Le-Minor technique, and the genetic relationship was assessed with ERIC-PCR followed by PFGE. The outcomes showed that 69.4% of the batches sampled carried Salmonella upon arrival at the slaughterhouse and that 46.3% of the different samples from carcasses were contaminated with Salmonella. The two serovars isolated at the different steps in the slaughterhouse were Enteritidis (98.2%) and Kentucky (1.8%). Pulsed-field gel electrophoresis analysis revealed a low genetic diversity, with all S. Enteritidis isolates showing a nearly identical pulsotype (similarity >85%) and S. Kentucky strains showed the same XbaI PFGE profile (95.0% genetic similarity). The results of this study showed a high genetic relationship among isolates recovered from carcasses and environmental samples in the slaughterhouse from both Salmonella -positive and Salmonella -free flocks. Salmonella strains re-circulated across to poultry flocks and re-entered the slaughterhouse to survive on the processing line. Thus, it is necessary to implement molecular diagnosis methods in time at the field level to determine the Salmonella epidemiology of the flock, to make rapid decisions for the control of Salmonella and prevent entry into the slaughterhouse environment

Research Note: Persistent Salmonella problems in slaughterhouses related to clones linked to poultry companies

Salmonellosis remains one of the main foodborne zoonoses in Europe, with poultry products as the main source of human infections. The slaughterhouse has been identified as a potential source for Salmonella contamination of poultry meat. Despite the mandatory programme of the EU, there are companies with persistent Salmonella that are unable to remove the bacteria from their processing environment, compromising the entire production line. In this context, an intensive sampling study was conducted to investigate a slaughterhouse with persistent Salmonella problems, establishing the genetic relationship among Salmonella strains isolated during the slaughter process. A total of 36 broiler flocks were sampled during processing at the slaughterhouse. Salmonella was identified based on ISO 6579-1:2017 (Annex D), serotyped by Kauffman-White-Le-Minor technique, and the genetic relationship was assessed with ERIC-PCR followed by PFGE. The outcomes showed that 69.4% of the batches sampled carried Salmonella upon arrival at the slaughterhouse and that 46.3% of the different samples from carcasses were contaminated with Salmonella. The two serovars isolated at the different steps in the slaughterhouse were Enteritidis (98.2%) and Kentucky (1.8%). Pulsed-field gel electrophoresis analysis revealed a low genetic diversity, with all S. Enteritidis isolates showing a nearly identical pulsotype (similarity >85%) and S. Kentucky strains showed the same XbaI PFGE profile (95.0% genetic similarity). The results of this study showed a high genetic relationship among isolates recovered from carcasses and environmental samples in the slaughterhouse from both Salmonella-positive and Salmonella-free flocks. Salmonella strains re-circulated across to poultry flocks and re-entered the slaughterhouse to survive on the processing line. Thus, it is necessary to implement molecular diagnosis methods in time at the field level to determine the Salmonella epidemiology of the flock, to make rapid decisions for the control of Salmonella and prevent entry into the slaughterhouse environment.info:eu-repo/semantics/publishedVersio

Reparative giant cell granuloma in a pediatric patient

Reparative giant cell granulomas are benign, infrequent tumors, of non-odontogenic origin, that develop at central or peripheral level. Peripherally located lesions are frequently denominated ?giant cell epulis?, and never correspond to true neoplasia, but rather to inflammatory reactions secondary to another lesion (hemorrhage, etc.). It should be taken into account, that in general, head and neck tumors of infancy usually demonstrate an atypical biological behaviour. Furthermore, the anatomicopathologic diagnosis is often compromised in this type of lesion. We present the case of a 6-year-old boy, who, three weeks after suffering a slight facial trauma, developed a painless, exophytic swelling of approximately 4 cm, with bleeding on palpation, in the ipsilateral hemimaxilla. The lesion demonstrated rapid, progressive and continuous growth. The facial CT and incisional biopsy confirmed the suspected diagnosis of reparative giant cell granuloma. The patient was surgically treated, carrying out a left marginal maxillectomy associated with the extirpation of the soft-tissue lesion. The resultant defect was reconstructed with a Bichat fat-pad providing the patient with optimal esthetic and functional results. The definitive anatomicopathologic report of the surgical piece is compatible with reparative giant cell granuloma