Swine manure management by hydrothermal carbonization: Comparative study of batch and continuous operation.

Hydrothermal carbonization (HTC) is considered a promising technology for biomass waste management without pre-drying. This study explores the potential for swine manure management by comparing batch and continuous processes, emphasizing the benefits of the continuous mode, particularly for its potential full-scale application. The continuous process at low temperature (180 °C) resulted in a hydrochar with a lower degree of carbonization compared to the batch process, but similar characteristics were found in both hydrochars at higher operating temperatures (230-250 °C), such as C content (∼ 52 wt%), fixed carbon (∼ 24 wt%) and higher calorific value (21 MJ kg).

Influence of Strict Lockdown on Vitamin D Deficiency in Pregnant Women: A Word of Caution.

The main source of vitamin D results from skin sunlight exposure. Vitamin D deficiency (VDD) is linked to several adverse events during pregnancy. While performing a cross-sectional study with 886 pregnant women in Elda (Spain) from September 2019 to July 2020 to determine the association of VDD with gestational diabetes mellitus in relation to body mass index, a strict lockdown (SL) due to the COVID-19 pandemic was declared from 15 March 2020 to 15 May 2020.

Life cycle assessment of a novel strategy based on hydrothermal carbonization for nutrient and energy recovery from food waste.

In this work, a novel strategy for food waste valorization was evaluated from an environmental life-cycle perspective. A system based on acid-assisted hydrothermal carbonization of food waste combined with the exploitation of hydrochar by combustion and process water through nutrient recovery stage and subsequent anaerobic digestion, was assessed and compared with stand-alone anaerobic digestion as the reference system. This combination of processes aims to recover both nutrients in a stage of struvite precipitation from process water and energy through hydrochar and biogas combustion.

Acid-mediated hydrothermal treatment of sewage sludge for nutrient recovery.

Hydrothermal carbonization allows material valorization and energy recovery from wet biomass waste. In this study, the hydrothermal treatment of dewatered waste-activated sludge (DWAS) was evaluated at several temperatures (170-230 °C) and reaction times (5-60 min) in an acid-free medium or in media such as citric acid or HCl (0.1-0.

Improved energy recovery from food waste through hydrothermal carbonization and anaerobic digestion.

Here we studied energy valorization of food waste by hydrothermal carbonization coupled with anaerobic digestion. Hydrothermal treatment was carried out at 200 °C and 230 °C for 1 h, obtaining hydrochar with properties suitable for solid biofuel according to ISO/TS 17225-8. The increase in temperature improved the fuel properties of hydrochar (higher heating value 20.

Fate of nutrients during hydrothermal treatment of food waste.

Hydrothermal carbonization was evaluated as a food waste valorization strategy to obtain hydrochar and recover nutrients. In the hydrothermal treatment, the temperature (170-230 °C), reaction time (5-60 min), and addition of HCl (0.1-0.

Assessing cellulose nanofiber production from olive tree pruning residue.

Pruning operation in olive trees generates a large amount of biomass that is normally burned causing severe environmental concern. Therefore, the transformation of this agricultural residue into value-added products is imperative but still remains as a technological challenge. In this study, olive tree pruning (OTP) residue is evaluated for the first time to produce cellulose nanofibers (CNF).

Procedures and recommended times in the care process of the patient with pancreatic cancer: PAN-TIME consensus between scientific societies.

Purpose: Pancreatic cancer (PC) is a disease with bad prognosis. It is usually diagnosed at advanced stages and its treatment is complex. The aim of this consensus document was to provide recommendations by experts that would ameliorate PC diagnosis, reduce the time to treatment, and optimize PC management by interdisciplinary teams.

[Neonatal meningitis due to Enterococcus spp.: presentation of four cases].

Aim: Enterococci are unusual etiologic agents of bacterial meningitis and account for only 0.3-4% of all cases. Neonatal enterococcal meningitis, which is rarely reported in the medical literature, presents characteristics that are significantly different from enterococcal meningitis affecting other age groups, particularly adults.

Epidemiological, microbiological, clinical, and prognostic factors of bacteremia caused by high-level vancomycin-resistant Enterococcus species.

A case-control study was performed between 1994 and 1996 in order to study the epidemiological, microbiological, clinical, and prognostic features of high-level vancomycin-resistant enterococcal bacteremia. Seventeen consecutive patients who had clinically significant bacteremia due to vancomycin-resistant enterococci (vanA genotype: 16 Enterococcus faecalis, 1 Enterococcus faecium) were compared with 169 who had vancomycin-susceptible enterococcal bacteremia. The following were selected by multivariate analysis as independent risk factors that influenced the development of high-level vancomycin-resistant enterococcal bacteremia: prior glycopeptide therapy (P=0.

[Evolution of resistance in the genus Enterococcus in strains isolated from blood].

The objective of this study was to determine the evolution of the species distribution and the prevalence of resistance to the Enterococcus genus. We studied 281 strains of enterococcus isolated from blood samples: 90 throughout 1984 and 791 from the years 1994 to 1996. identification was made using PosCombo 4Y Microscan-Baxter dehydrated panels and the Rapid ID 32 Strep system (bioMerieux).

[Seroprevalence of hepatitis A in hemophiliacs].

Purpose: To study the seroprevalence of hepatitis A virus (HAV) infection in haemophiliacs treated with factor VIII/IX concentrates.

Patients And Methods: Anti-HAV IgG antibodies were tested in 133 haemophiliacs previously treated (20 of them only infused with virus-inactivated factor concentrates), 11 previously untreated haemophiliacs and 60 healthy individuals (> 25 yr. old).