Developing the next generation of renewable energy technologies: an overview of low-TRL EU-funded research projects.

A cluster of eleven research and innovation projects, funded under the same call of the EU's H2020 programme, are developing breakthrough and game-changing renewable energy technologies that will form the backbone of the energy system by 2030 and 2050 are, at present, at an early stage of development. These projects have joined forces at a collaborative workshop, entitled ' Low-TRL Renewable Energy Technologies', at the 10th Sustainable Places Conference (SP2022), to share their insights, present their projects' progress and achievements to date, and expose their approach for exploitation and market uptake of their solutions.

Ultra-Selective CMSMs Derived from Resorcinol-Formaldehyde Resin for CO2 Separation.

A resorcinol-formaldehyde precursor was synthesized to fabricate the CO2 selective Carbon Molecular Sieve Membranes (CMSMs) developed in this study. The degree of polymerization (DP) was analyzed via Gel Permeation Chromatography (GPC) and its effect on the CO2/N2 perm-selectivity and CO2 permeance was investigated. The membrane that was polymerized at 80 °C (named R80) was selected as the best performing CMSM after a preliminary test. The post treatment with oxidative atmosphere was performed to increase the CO2 permeance and CO2/N2 perm-selectivity on membrane R80. The gas permeation results and Pore Size Distribution (PSD) measurements via perm-porometry resulted in selecting the membrane with an 80 °C polymerization temperature, 100 min of post treatment in 6 bar pressure and 120 °C with an oxygen concentration of 10% (named R80T100) as the optimum for enhancing the performance of CMSMs. The 3D laser confocal microscopy results confirmed the reduction in the surface roughness in post treatment on CMSMs and the optimum timing of 100 min in the treatment. CMSM R80T100 exhibiting CO2/N2 ideal selectivity of 194 at 100 °C with a CO2 permeability of 4718 barrier was performed higher than Robeson's upper bound limit for polymeric membranes and also the other CMSMs fabricated in this work.

Rational Design of Bioinspired Nanocomposites with Tunable Catalytic Activity.

Biological assembly processes offer inspiration for ordering building blocks across multiple length scales into advanced functional materials. Such bioinspired strategies are attractive for assembling supported catalysts, where shaping and structuring across length scales are essential for their performance but still remain tremendously difficult to achieve. Here, we present a simple bioinspired route toward supported catalysts with tunable activity and selectivity. We coprecipitate shape-controlled nanocomposites with large specific surface areas of barium carbonate nanocrystals that are uniformly embedded in a silica support. Subsequently, we exchange the barium carbonate to cobalt while preserving the nanoscopic layout and microscopic shape, and demonstrate their catalytic performances in the Fischer-Tropsch synthesis as a case study. Control over the crystal size between 10 and 17 nm offers tunable activity and selectivity for shorter (C5-C11) and longer (C20+) hydrocarbons, respectively. Hence, these results open simple, versatile, and scalable routes to tunable and highly reactive bioinspired catalysts.

Continuous-Flow In-Line Solvent-Swap Crystallization of Vitamin D3.

A continuous tandem in-line evaporation-crystallization is presented. The process includes an in-line solvent-swap step, suitable to be coupled to a capillary based cooler. As a proof of concept, this setup is tested in a direct in-line acetonitrile mediated crystallization of Vitamin D3. This configuration is suitable to be coupled to a new end-to-end continuous microflow synthesis of Vitamin D3. By this procedure, vitamin particles can be crystallized in continuous flow and isolated using an in-line continuous filtration step. In one run in just 1 min of cooling time, ∼50% (w/w) crystals of Vitamin D3 are directly obtained. Furthermore, the polymorphic form as well as crystals shape and size properties are described in this paper.

Optimization of antimalarial, and anticancer activities of (E)-methyl 2-(7-chloroquinolin-4-ylthio)-3-(4-hydroxyphenyl) acrylate.

Chemically modified versions of bioactive substances, are particularly useful in overcoming barriers associated with drug formulation, drug delivery and poor pharmacokinetic properties. In this study, a series of fourteen (E)-methyl 2-(7-chloroquinolin-4-ylthio)-3-(4-hydroxyphenyl) acrylate (2-15) were prepared by using a one step synthesis from 1 previously described by us as potential antimalarial and antitumor agent. Molecules were evaluated as inhibitors of ß-hematin formation, where most of them showed a significant inhibition value (% > 70). The best inhibitors were tested in vivo as potential antimalarials in mice infected with P. berghei ANKA, chloroquine susceptible strain. Three of them (5, 6, and 15) displayed antimalarial activity comparable to that of chloroquine. Also, molecules were evaluated for their cytotoxic activity against two human cancer cell lines (Jurkat E6.1 and HL60) and primary culture of human lymphocytes. Most of the synthesized compounds, except for analogs 2-6, 8, and 10-12, displayed cytotoxicity against cancer cell lines without affecting normal cells. The potency of the compounds was 15 ≫ 1, and 14 > 7, 9, and 13. Flow cytometry analysis demonstrated an increase in apoptotic cell death after 24 h. The compounds may affect tumor cell autophagy and consequently increase cell apoptosis.

Freeze artifact on full-field optical coherence tomography skin imaging.

BACKGROUND/PURPOSE: Full-field optical coherence tomography (FFOCT) is an emerging imaging technique for rapid histological analysis. As FFOCT is introduced into the Mohs workflow, it is important to document the effect of tissue freezing on FFOCT images and any effect FFOCT has on frozen sections. Our study aimed to evaluate the changes on FFOCT images after tissue freezing as well as FFOCT imaging effects on frozen sectioning. METHODS: Six normal skin specimens were imaged using FFOCT and subsequently frozen using a cryostat. The specimens were then reimaged using FFOCT and compared for any differences. To evaluate the effect of FFOCT imaging on frozen sections, five normal skin specimens were bisected and one half was imaged using FFOCT. Both halves underwent frozen sectioning and analysis. RESULTS: Significant changes in the fat, sebaceous glands, eccrine glands, and dermal collage and minimal changes in the epidermis were seen after freezing. No effect on frozen sectioning was seen after FFOCT imaging. CONCLUSION: As FFOCT is studied for use in Mohs, clinicians should be aware that freezing prior to imaging introduces significant artifact in the FFOCT image. If possible, specimens should undergo imaging prior to being frozen.

Dual effect of serotonin on the dendritic growth of cultured hippocampal neurons: Involvement of 5-HT1A and 5-HT7 receptors.

Serotonin acts through its receptors (5-HTRs) to shape brain networks during development and modulates essential functions in mature brain. The 5-HT1AR is mainly located at soma of hippocampal neurons early during brain development and its expression gradually shifts to dendrites during postnatal development. The 5-HT7R expressed early during hippocampus development, shows a progressive reduction in its expression postnatally. Considering these changes during development, we evaluated in cultured hippocampal neurons whether the 5-HT1AR and 5-HT7R change their expression, modulate dendritic growth, and activate signaling pathways such as ERK1/2, AKT/GSK3ß and LIMK/cofilin, which may sustain dendrite outgrowth by controlling cytoskeleton dynamics. We show that mRNA levels of both receptors increase between 2 and 7 DIV; however only protein levels of 5-HT7R increase significantly at 7 DIV. The 5-HT1AR is preferentially distributed in the soma, while 5-HT7R displays a somato-dendritic localization at 7 DIV. Through stimulation with 5-HT at 7 DIV during 24h and using specific antagonists, we determined that 5-HT1AR decreases the number of primary and secondary dendrites and restricts the growth of primary dendrites. The activation of 5-HT1AR and 5-HT7R promotes the growth of short secondary dendrites and triggers ERK1/2 and AKT phosphorylation through MEK and PI3K activation respectively; without changes in the phosphorylation of LIMK and cofilin. We conclude that 5-HT1AR restricts dendritogenesis and outgrowth of primary dendrites, but that both 5-HT1AR and 5-HT7R promote secondary dendrite outgrowth. These data support the role of 5-HT in neuronal outgrowth during development and provide insight into cellular basis of neurodevelopmental disorders.

Facile Synthesis of Catalytic AuPd Nanoparticles within Capillary Microreactors Using Polyelectrolyte Multilayers for the Direct Synthesis of H2O2.

Microreactors present innovative solutions for problems pertaining to conventional reactors and therefore have seen successful application in several industrial processes. Yet, its application in heterogeneously catalyzed gas-liquid reactions has been challenging, mainly due to the lack of an easy and flexible methodology for catalyst incorporation inside these reactors. Herein, we report a facile technique for obtaining small (<2 nm) and well-distributed catalytic nanoparticles on the walls of silica-coated capillaries, that act as micro(channel) reactors. These particles are formed in situ on the reactor walls using polyelectrolyte multilayers (PEMs), built by layer-by-layer self-assembly. Manipulating the PEMs' synthesis condition gives easy control over metal loading, without compromising on particle size. Both monometallic (Au and Pd) and bimetallic (AuPd) nanoparticles were successfully obtained using this technique. Finally, these catalytic microreactors were found to exhibit exceptional activity for the direct synthesis of hydrogen peroxide from H2 and O2.

Carbon-coated ceramic membrane reactor for the production of hydrogen by aqueous-phase reforming of sorbitol.

Hydrogen was produced by aqueous-phase reforming (APR) of sorbitol in a carbon-on-alumina tubular membrane reactor (4 nm pore size, 7 cm long, 3 mm internal diameter) that allows the hydrogen gas to permeate to the shell side, whereas the liquid remains in the tube side. The hydrophobic nature of the membrane serves to avoid water loss and to minimize the interaction between the ceramic support and water, thus reducing the risks of membrane degradation upon operation. The permeation of hydrogen is dominated by the diffusivity of the hydrogen in water. Thus, higher operation temperatures result in an increase of the flux of hydrogen. The differential pressure has a negative effect on the flux of hydrogen due to the presence of liquid in the larger pores. The membrane was suitable for use in APR, and yielded 2.5 times more hydrogen than a reference reactor (with no membrane). Removal of hydrogen through the membrane assists in the reaction by preventing its consumption in undesired reactions.

Selective production of methane from aqueous biocarbohydrate streams over a mixture of platinum and ruthenium catalysts.

A one-step process for the selective production of methane from low-value aqueous carbohydrate streams is proposed. Sorbitol, used herein as a model compound, is fully converted to methane, CO2 , and a minor amount of H2 by using a physical mixture of Pt and Ru (1:5 in mass basis) at 220 °C and 35 bar. This conversion is the result of hydrogenolysis of part of the sorbitol over Ru and the in situ production of H2 through the aqueous-phase reforming of the remaining carbohydrate over Pt. A synergistic effect of the combination of these two catalysts results in the rapid and highly selective conversion of the carbohydrate to methane. This process offers the possibility of upgrading a low-value carbohydrate stream into a valuable fuel with no addition of H2. Exergy analysis reveals that nearly 80 % of the exergy of the reactant is recovered as methane.

Effect of dequalinium on the oxidative stress in Plasmodium berghei-infected erythrocytes.

The bisquinoline drug dequalinium (DQ) has demonstrated remarkable activity against some infection diseases, including malaria. Oxidative stress represents a biochemical target for potential antimalarials. In this work, we have tested the ability of this compound to modify the oxidative status in Plasmodium berghei-infected erythrocytes. After hemolysis, activities of superoxide dismutase (SOD), catalase (CAT), glutathione cycle, and dehydrogenase enzymes were investigated. The activity of glucose-6-phosphate dehydrogenase (G6PD) and 6-phosphogluconate dehydrogenase (6PGLD) in infected cells were diminished by this drug compared to controls (300% and 80% approximately, respectively), while glutathione peroxidase (GPx), glutathione transferase (GST), and glutathione levels were also lowered. As a compensatory response, we could appreciate an increase of SOD activity (20% approximately) in infected cells treated with DQ; however, catalase was not affected by the compound. Lipid peroxidation was also decreased by this drug, protecting the cells from the hemolysis caused by the infection. In conclusion, oxidative stress represents a biochemical event which is modulated by DQ, interfering with the antioxidant regular activities in P. berghei infection.

Immunotoxicity of explosives-contaminated soil before and after bioremediation.

Soils from the Yorktown Naval Base contaminated with trinitrotoluene (TNT) and other explosives were used to prepare eluates before and after bioremediation using microbial growth amendments in the presence (P1 eluates) or absence (P2 eluates) of exogenous white rot fungus. Effectiveness of bioremediation was examined by several immunotoxicity assays-viability/growth of lymphocytes, cytokine production, and expression of the interleukin-2 (IL-2) receptor-using human peripheral blood mononuclear cells exposed to the eluates. Although TNT concentrations decreased in both P1 and P2 eluates relative to untreated baseline soil (BL) eluates, a recovery in lymphocyte growth/viability and IL-2 secretion was seen with P2 but not P1 eluates relative to BL eluates. IL-2 receptor levels were higher in cells exposed to BL and P2 eluates than when exposed to P1 eluates. Interferon-gamma, tumor necrosis factor-beta, and IL-10 levels were highest in BL and P2 eluates and lowest in P1 eluates. Taken together, these results suggest that treatment of the soil with microbial growth amendments in the absence but not the presence of exogenous white rot fungi lead to partial bioremediation as assessed by lymphocyte functions.

Major surgery (radical cystectomy with urethrectomy) in a patient with von Willebrand's disease type I. Reliability and limits of hemocoagulative tests.

Patients with bleeding disorders frequently need medical or surgical care. The case is reported of a man with von Willebrand's disease type I undergoing radical cystectomy with urethrectomy for multicentric bladder cancer with neoplastic involvement of prostatic urethra, who developed serious bleeding complications which can not be predicted with conventional coagulation in laboratory. The use of the thromboelastograph (TEG) in the critical postoperative period was decisive. The tracing alterations allowed to assess the clotting disorder, constantly counterbalancing the baseline deficit and the blood loss.

[Augmentation phalloplasty according to the G. Tritto technique]. / Falloplastica di ingrandimento sec. G. Tritto.

We describe the augmentation phalloplasty according to G. Tritto technique. The procedure is based on the use of dermo-fat free graft taken from the cruro-gluteal area and allows a penile lengthening varying from 2.5 to 3 cm. This technique can be performed in patients with the so-called "small penises" and psychosexual dysfunctions.

Conservative surgery for renal cell carcinoma.

Conservative surgery was initially limited to patients with localized RCC present bilaterally or in a solitary kidney, in whom radical nephrectomy would necessitate immediate renal replacement therapy. Today, the widespread use of abdominal ultrasound as screening modality in patients with nonspecific or unrelated symptoms allows the detection of renal parenchymal tumors rarely seen before: asymptomatic, small and unilateral neoplasms, often surrounded by a thick and complete pseudocapsule. Global renal function and contralateral kidney are usually normal and the patients show good performance status. For these reasons and because of the generally good results of the first experiences, several authors advocate conservative surgery as an elective indication. Recently, some studies have reported promising results with this approach. On the other hand, some controversial issues persist (multifocality of RCC, low risk of local relapse and renal failure after radical surgery, low incidence of tumor in the contralateral kidney) reducing the opportunity to perform nephron-sparing surgery when the contralateral kidney is normal. In the present study, we report our experience of nephron-sparing surgery for RCC and we review the current and international opinion concerning this treatment.

Chemotherapy with FUDR in the management of metastatic renal cell carcinoma.

SUMMARY: Metastatic renal cell carcinoma has a poor prognosis, requiring systemic therapy, in addition to radical nephrectomy. Since August 1989, 50 patients were treated with continuous, systemic, chronobiological infusion of FUDR (floxuridine) at our Institution. We reported 11.7% of objective responses, a long period of stable disease and low toxicity. We also compared our actuarial survival with the results obtained with recombinant IL-2 treatment.

Estudio de un brote epidémico de enfermedad febril exantemática en una comunidad campesina del departamento del Cusco / Study of an outbreak of febrile rash illness in a rural community in the department of Cusco

Se describe un brote de enfermedad febril exantemática, compatible con tifus exantemático, ocurrido en una comunidad campesina del Cusco. El brote tuvo 5 semanas de duración y afectó sobre todo al grupo en edad productiva. Además se describe las características clínicas de los afectados, el proceso de intervención, la participación de los líderes y de la comunidad en el control del brote y los procedimientos y resultados de la intervención.

This article describes an epidemic outbreak of exanthematic febrile disease, compatible with typhus exanthematic, the outbreak had five weeks of duration and affected mainly at the productive a age group. Also, it describes the cases’ clinical characteristics, the intervention process, the community participation and the intervention’s procedure and results.