Can Plants Perceive Human Gestures? Using AI to Track Eurythmic Human-Plant Interaction.

This paper explores if plants are capable of responding to human movement by changes in their electrical signals. Toward that goal, we conducted a series of experiments, where humans over a period of 6 months were performing different types of eurythmic gestures in the proximity of garden plants, namely salad, basil, and tomatoes. To measure plant perception, we used the plant SpikerBox, which is a device that measures changes in the voltage differentials of plants between roots and leaves. Using machine learning, we found that the voltage differentials over time of the plant predict if (a) eurythmy has been performed, and (b) which kind of eurythmy gestures has been performed. We also find that the signals are different based on the species of the plant. In other words, the perception of a salad, tomato, or basil might differ just as perception of different species of animals differ. This opens new ways of studying plant ecosystems while also paving the way to use plants as biosensors for analyzing human movement.

Early automated cerebral edema assessment following endovascular therapy: impact on stroke outcome.

BACKGROUND: Cerebral edema (CED) is associated with poorer outcome in patients with acute ischemic stroke (AIS). The aim of the study was to investigate the factors contributing to greater early CED formation in patients with AIS who underwent endovascular therapy (EVT) and its association with functional outcome. METHODS: We conducted a multicenter cohort study of patients with an anterior circulation AIS undergoing EVT. The volume of cerebrospinal fluid (CSF) was extracted from baseline and 24-hour follow-up CT using an automated algorithm. The severity of CED was quantified by the percentage reduction in CSF volume between CT scans (∆CSF). The primary endpoint was a shift towards an unfavorable outcome, assessed by modified Rankin Scale (mRS) score at 3 months. Multivariable ordinal logistic regression analyses were performed. The ∆CSF threshold that predicted unfavorable outcome was selected using receiver operating characteristic curve analysis. RESULTS: We analyzed 201 patients (mean age 72.7 years, 47.8% women) in whom CED was assessable for 85.6%. Higher systolic blood pressure during EVT and failure to achieve modified Thrombolysis In Cerebral Infarction (mTICI) 3 were found to be independent predictors of greater CED. ∆CSF was independently associated with the probability of a one-point worsening in the mRS score (common odds ratio (cOR) 1.05, 95% CI 1.03 to 1.08) after adjusting for age, baseline mRS, National Institutes of Health Stroke Scale (NIHSS), and number of passes. Displacement of more than 25% of CSF was associated with an unfavorable outcome (OR 6.09, 95% CI 3.01 to 12.33) and mortality (OR 6.72, 95% CI 2.94 to 15.32). CONCLUSIONS: Early CED formation in patients undergoing EVT was affected by higher blood pressure and incomplete reperfusion. The extent of early CED, measured by automated ∆CSF, was associated with worse outcomes.

Statin Therapy for Secondary Prevention in Ischemic Stroke Patients With Cerebral Microbleeds.

BACKGROUND AND OBJECTIVES: The association between statin use and the risk of intracranial hemorrhage (ICrH) following ischemic stroke (IS) or transient ischemic attack (TIA) in patients with cerebral microbleeds (CMBs) remains uncertain. This study investigated the risk of recurrent IS and ICrH in patients receiving statins based on the presence of CMBs. METHODS: We conducted a pooled analysis of individual patient data from the Microbleeds International Collaborative Network, comprising 32 hospital-based prospective studies fulfilling the following criteria: adult patients with IS or TIA, availability of appropriate baseline MRI for CMB quantification and distribution, registration of statin use after the index stroke, and collection of stroke event data during a follow-up period of ≥3 months. The primary endpoint was the occurrence of recurrent symptomatic stroke (IS or ICrH), while secondary endpoints included IS alone or ICrH alone. We calculated incidence rates and performed Cox regression analyses adjusting for age, sex, hypertension, atrial fibrillation, previous stroke, and use of antiplatelet or anticoagulant drugs to explore the association between statin use and stroke events during follow-up in patients with CMBs. RESULTS: In total, 16,373 patients were included (mean age 70.5 ± 12.8 years; 42.5% female). Among them, 10,812 received statins at discharge, and 4,668 had 1 or more CMBs. The median follow-up duration was 1.34 years (interquartile range: 0.32-2.44). In patients with CMBs, statin users were compared with nonusers. Compared with nonusers, statin therapy was associated with a reduced risk of any stroke (incidence rate [IR] 53 vs 79 per 1,000 patient-years, adjusted hazard ratio [aHR] 0.68 [95% CI 0.56-0.84]), a reduced risk of IS (IR 39 vs 65 per 1,000 patient-years, aHR 0.65 [95% CI 0.51-0.82]), and no association with the risk of ICrH (IR 11 vs 16 per 1,000 patient-years, aHR 0.73 [95% CI 0.46-1.15]). The results in aHR remained consistent when considering anatomical distribution and high burden (≥5) of CMBs. DISCUSSION: These observational data suggest that secondary stroke prevention with statins in patients with IS or TIA and CMBs is associated with a lower risk of any stroke or IS without an increased risk of ICrH. CLASSIFICATION OF EVIDENCE: This study provides Class III evidence that for patients with IS or TIA and CMBs, statins lower the risk of any stroke or IS without increasing the risk of ICrH.

Left atrial appendage occlusion in patients with spontaneous intracerebral hemorrhage: An observational study.

BACKGROUND: Patients with atrial fibrillation (AF) and intracerebral hemorrhage (ICH) are at high risk of ischemic and recurrent bleeding events. Therefore, the decision of restarting or avoiding anticoagulation is challenging. Left atrial appendage occlusion (LAAO) is an alternative for these patients. However, few data are available about safety of early LAAO and factors associated with ischemic stroke and ICH recurrence. METHODS: A unicentric, observational, retrospective study including all patients with AF and a previous ICH who underwent LAAO. We analyzed baseline clinical and neuroimaging characteristics, procedural outcomes, post-procedural therapies and long-term follow-up. RESULTS: Forty patients were included, whose mean age was 76.6 ±7.6 years and 73 % were men. In patients in whom a Magnetic Resonance (MR) was performed (n=22, 55 %), cortical microbleeds were detected in 15 (68 %) and cortical superficial siderosis in one patient. The procedure was successful and safe in 100 % of the patients and it was performed within 30 days of the ICH in 37 % of them. After a median follow up of 46.2 months [26-69], intracranial hemorrhage (ICrH) recurrence occurred in 6 patients (5 ICH and 1 subdural hematoma -SDH-) and the index ICH was lobar in all of them. Ischemic events were significantly lower than expected according to the CHA2DS2-VASc score (7.5 % vs. 16.6 %, p=0.048) and bleeding events were similar to expected by the HAS-BLED score (20 % vs 23.4 %, p=0.63). CONCLUSIONS: In patients with ICH and AF, early LAAO was found to be safe and associated with a reduction in ischemic stroke. However, recurrent ICH risk remains high, and it appears to be mainly driven by cerebral amyloid angiopathy.

Asymptomatic parenchymal haemorrhage following endovascular treatment: Impact on functional outcome in patients with acute ischaemic stroke.

BACKGROUND AND PURPOSE: In patients with acute ischaemic stroke (AIS), haemorrhagic transformation (HT) following endovascular treatment (EVT) is associated with poor functional outcome. However, the impact of asymptomatic HT, not linked to neurological deterioration in the acute phase, is unknown. We aimed to investigate the impact of asymptomatic PH1 (aPH1) and PH2 (aPH2) subtypes of HT on the functional outcome of patients treated with EVT. METHODS: We conducted a retrospective study of patients with AIS who were consecutively admitted to our comprehensive stroke centre between January 2019 and December 2022, and who underwent EVT. We collected clinical, radiological, and procedural data. HTs were categorized according to the Heidelberg classification. The primary outcome was the shift on the modified Rankin Scale (mRS) at 3 months of follow-up. We performed bivariate and multivariable ordinal regression analyses to test the association between aPH1/aPH2 and the primary outcome. RESULTS: We included 314 patients (mean age = 72.5 years [SD = 13.6], 171 [54.5%] women). We detected 54 (17.2%) patients with HT; 23 (7.3%) were classified as PH2 (11 asymptomatic) and 17 (5.4%) as PH1 (16 asymptomatic). The adjusted common odds ratio for aPH2 of worsening 1 point on the 3-month mRS was 3.32 (95% confidence interval = 1.16-9.57, p = 0.026). No association was observed for aPH1. aPH2 was also independently associated with lower odds of achieving a favourable outcome (mRS = 0-2). Neither aPH1 nor aPH2 was associated with mortality. CONCLUSIONS: In patients with AIS treated with EVT, aPH2 is independently associated with unfavourable functional outcome.

The Internet of Things for the Intelligent Management of the Heating of a Swimming Pool by Means of Smart Sensors.

By using various smart sensors integrated in a global domotic system, a proper solar thermal management is executed. The goal is to properly manage solar energy for heating swimming pool using various devices installed at home. Swimming pools are a necessity in many communities. In summer, they are a source of refreshment. However, maintaining a swimming pool at an optimal temperature can be a challenge even in the summer months. The use of the Internet of Things in homes has enabled proper management of solar thermal energy, thus significantly improving the quality of life by making homes more comfortable and safer without using additional resources. The houses built today have several smart devices that manage to optimize the energy consumption of the house. The solutions proposed in this study to improve energy efficiency in swimming pool facilities include the installation of solar collectors to heat swimming pool water more efficiently. The installation of smart actuation devices (to efficiently control energy consumption of a pool facility via different processes) together with sensors that provide valuable information on energy consumption in the different processes of a pool facility, can optimize energy consumption thus reducing overall consumption (by 90%) and economic cost (by more than 40%). Together, these solutions can help to significantly reduce energy consumption and economic costs and extrapolate it to different processes of similar characteristics in the rest of the society.

Acute Acalculous Cholecystitis in a Multiple Sclerosis Patient Treated with Natalizumab.

Natalizumab is a disease-modifying drug that has proved greatly effective and well-tolerated in highly-active Multiple Sclerosis (MS). However, it may increase the risk for opportunistic infections, such as viral ones. We describe a 37-year-old woman treated with Natalizumab for Relapsing-Remitting Multiple Sclerosis (RR-MS) who presented to our clinic with malaise, arthromyalgias, rash, and fever. She later developed diarrhea and severe abdominal pain. A diagnosis of parvovirus B19 (B19V) infection and acute acalculous cholecystitis (AAC) was eventually made. To our knowledge, this is the first reported case of AAC possibly related to Natalizumab therapy and B19V infection.

Guillain-Barré syndrome associated with leptomeningeal enhancement following SARS-CoV-2 infection.

INTRODUCTION: Patients with coronavirus disease 2019 (COVID-19) typically present with respiratory symptoms, but little is known about the disease's potential neurological complications.We report a case of Guillain-Barré syndrome (GBS) following a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, in association with leptomeningeal enhancement. CASE PRESENTATION: A 56-year-old woman presented with recent unsteadiness and paraesthesia in both hands. Fifteen days earlier, she complained of fever, dry cough and shortness of breath. Her chest X-ray showed a lobar consolidation and PCR was positive for SARS-CoV-2; she was admitted due to mild COVID-19 pneumonia.In the first 48 hours of hospitalisation, she started to experience lumbar pain and weakness of the proximal lower extremities, progressing to bilateral facial nerve palsy, oropharyngeal weakness and severe proximal tetraparesis with cervical flexion 2/5 on the MRC scale. Full spine magnetic resonance imaging (MRI) showed a brainstem and cervical leptomeningeal enhancement. Analysis of cerebrospinal fluid (CSF) revealed albumin-cytological dissociation. Microbiological studies on CSF, including SARS-CoV-2, were negative. Nerve conduction studies were consistent with demyelinating neuropathy. She was treated with intravenous immunoglobulin, with significant neurological improvement noted over the next 2 weeks. CONCLUSION: Leptomeningeal enhancement is an atypical feature in GBS, but could be a marker of its association with SARS-CoV-2 infection.

Impact of COVID-19 outbreak on ischemic stroke admissions and in-hospital mortality in North-West Spain.

BACKGROUND AND PURPOSE: Spain has been one of the countries heavily stricken by COVID-19. But this epidemic has not affected all regions equally. We analyzed the impact of the COVID-19 pandemic on hospital stroke admissions and in-hospital mortality in tertiary referral hospitals from North-West Spain. METHODS: Spanish multicenter retrospective observational study based on data from tertiary hospitals of the NORDICTUS network. We recorded the number of patients admitted for ischemic stroke between 30 December 2019 and 3 May 2020, the number of IVT and EVT procedures, and in-hospital mortality. RESULTS: In the study period, 2737 patients were admitted with ischemic stroke. There was a decrease in the weekly mean admitted patients during the pandemic (124 vs. 173, p<0.001). In-hospital mortality of stroke patients increased significantly (9.9% vs. 6.5%, p = 0.003), but there were no differences in the proportion of IVT (17.3% vs. 16.1%, p = 0.405) or EVT (22% vs. 23%, p = 0.504). CONCLUSION: We found a decrease in the number of ischemic stroke admissions and an increase in in-hospital mortality during the COVID-19 epidemic in this large study from North-West Spain. There were regional changes within the network, not fully explained by the severity of the pandemic in different regions.

Análisis de los tumores sólidos ováricos pediátricos en nuestra población / Analysis of solid ovarian tumours in a Spanish paediatric population

INTRODUCCIÓN Y OBJETIVOS: Los tumores ováricos son raros en la infancia y representan entre el 1 y el 5% de todos los tumores sólidos. Nuestro objetivo es conocer las características epidemiológicas, los subtipos histológicos y el manejo terapéutico de los tumores sólidos ováricos de la población pediátrica de la provincia de Córdoba. MATERIAL Y MÉTODOS: Se realizó un estudio retrospectivo, descriptivo, observacional, en el que se han revisado las historias clínicas de pacientes ≤ 14 años diagnosticadas de tumores sólidos ováricos en un hospital de tercer nivel entre los años 1994 y 2017, excluyéndose los tumores secundarios. Se revisó la edad, la presentación clínica, la lateralidad, la metodología diagnóstica, el tratamiento, la anatomía patológica y la evolución. RESULTADOS: Se revisaron 37 tumores ováricos en 31 pacientes, siendo 6 bilaterales. La edad media fue de 10,3 años (0-14). El 58% debutaron como masa palpable. No existe predominio de lateralidad. Los marcadores tumorales fueron negativos. Se practicó cirugía conservadora en el 29,7% y anexectomía en el 70,3%. Solo un teratoma inmaduro estadio I con gliomatosis peritoneal precisó tratamiento quimioterápico adyuvante postoperatorio. El estudio histológico demuestra un predominio de tumores de células germinales (65%) frente a los de estirpe epitelial (22%). Destacan 3 tumores estromales que corresponden a fibromas (síndrome de Gorlin) y un gonadoblastoma bilateral asociado a síndrome de Frasier. El tipo de tumor más frecuente fue el teratoma quístico maduro (35,1%). Evolución favorable en todos los casos. CONCLUSIONES: Dada la alta tasa de benignidad de los tumores ováricos en la infancia, la cirugía conservadora debe ser de primera elección, sobre todo en los bilaterales. Si existen antecedentes hereditarios, es imprescindible realizar estudios genéticos moleculares para descartar síndromes asociados

INTRODUCTION AND OBJECTIVES: Ovarian tumours are rare in childhood, and account for 1-5% of all tumours. The aim of this study is to determine the epidemiological features, histological subtypes, and therapeutic management of ovarian solid ovarian tumours of the paediatric population of the province of Cordoba, in Spain. MATERIAL AND METHODS: A retrospective, descriptive, observational and institutional study was conducted in which a review was made of the clinical histories of patients younger than 14years-old diagnosed with ovarian tumours, excluding secondary tumours in a University Hospital between 1994 and 2017. A review was carried out on the age, clinical presentation, laterality, diagnostic methodology, treatment, histopathology, and evolution of these tumours. RESULTS: A total of 37 ovarian tumours were reviewed in 31 patients, 6 of them being bilateral. The mean age was 10.3 (0-14) years, with 58% presenting as a palpable mass. There was no predominance of laterality. The tumour markers were negative. Conservative surgery was performed in 29.7% and adnexectomy in 70.3%. Only one case required post-operative adjuvant chemotherapy treatment (stage I immature teratoma with peritoneal gliomatosis). The histological study shows a predominance of germ cell tumours (65%) against those of epithelial lineage (22%). There were 3 stromal tumours that corresponded to fibroma (Gorlin syndrome), and bilateral gonadoblastoma associated with Frasier syndrome. The most frequent type of tumour was mature cystic teratoma (35.1%). There were no complications in the follow-up. CONCLUSIONS: Given that most childhood ovarian tumours are benign, conservative surgery is considered as the first choice, being even more important in bilateral tumours. If there is a family history, it is essential to carry out molecular genetic studies, to rule out associated syndromes

[Analysis of solid ovarian tumours in a Spanish paediatric population]. / Análisis de los tumores sólidos ováricos pediátricos en nuestra población.

INTRODUCTION AND OBJECTIVES: Ovarian tumours are rare in childhood, and account for 1-5% of all tumours. The aim of this study is to determine the epidemiological features, histological subtypes, and therapeutic management of ovarian solid ovarian tumours of the paediatric population of the province of Cordoba, in Spain. MATERIAL AND METHODS: A retrospective, descriptive, observational and institutional study was conducted in which a review was made of the clinical histories of patients younger than 14years-old diagnosed with ovarian tumours, excluding secondary tumours in a University Hospital between 1994 and 2017. A review was carried out on the age, clinical presentation, laterality, diagnostic methodology, treatment, histopathology, and evolution of these tumours. RESULTS: A total of 37 ovarian tumours were reviewed in 31 patients, 6 of them being bilateral. The mean age was 10.3 (0-14) years, with 58% presenting as a palpable mass. There was no predominance of laterality. The tumour markers were negative. Conservative surgery was performed in 29.7% and adnexectomy in 70.3%. Only one case required post-operative adjuvant chemotherapy treatment (stageI immature teratoma with peritoneal gliomatosis). The histological study shows a predominance of germ cell tumours (65%) against those of epithelial lineage (22%). There were 3 stromal tumours that corresponded to fibroma (Gorlin syndrome), and bilateral gonadoblastoma associated with Frasier syndrome. The most frequent type of tumour was mature cystic teratoma (35.1%). There were no complications in the follow-up. CONCLUSIONS: Given that most childhood ovarian tumours are benign, conservative surgery is considered as the first choice, being even more important in bilateral tumours. If there is a family history, it is essential to carry out molecular genetic studies, to rule out associated syndromes.

Manejo del reflujo gastroesofágico en niños. Funduplicatura de Nissen convencional y por laparoscopia en los últimos 15 años en un centro especializado / Management of gastroesophageal reflux in children. Single centre experience in conventional and laparoscopic Nissen fundoplication in the last 15 years

INTRODUCCIÓN: La funduplicatura de Nissen (FN) es la técnica más utilizada y con mejores resultados para tratar el reflujo gastroesofágico en niños. El abordaje laparoscópico (FNL) es seguro, con baja morbilidad y alta tasa de éxito, aunque algunos casos precisan abordaje convencional (FNC) o abierto. Nuestro objetivo es comparar los resultados entre la FNC y la FNL en nuestro centro. MATERIAL Y MÉTODOS: Estudio retrospectivo de los pacientes < 14 años sometidos a FN entre 2000 y 2015. Comparamos ambos abordajes: complicaciones, estancia hospitalaria y seguimiento. RESULTADOS: Se realizaron 75 FN; 49 (65,3%) FNL, 23 (30,7%) FNC y 3 (4,0%) reconversiones. Se asoció gastrostomía por laparoscopia en el 10,7% y abierta en el 5,3%. El 10,7% portaban gastrostomía previamente a la FN. La edad media fue de 4 a˜nos, y el 68,7% fueron varones. El 36% presentaron algún grado de encefalopatía, el 14,7% hernia hiatal, el 5,4% antecedente de atresia esofágica intervenida y el 5,4% al menos un episodio aparentemente letal. No encontramos diferencias significativas en la duración de la intervención entre ambos abordajes. El 36% presentaron complicaciones, más frecuente en la FNC: OR = 3,30 (IC 95%: 1,1-9,6). La estancia disminuyó en 9 días en la FNL (IC 95%: 5,5-13,5). El seguimiento medio fue de 26 meses (IC 95%: 20,9-31,6), con 10,7% fallecimientos (5 insuficiencias respiratorias, una muerte súbita y 2 por su encefalopatía); el 4,2% precisaron nueva funduplicatura, el 15,8% mostraron mejoría sintomática y el 64,0%, ausencia de síntomas. CONCLUSIONES: La FNL es una técnica adecuada para el tratamiento del reflujo gastroesofágico, con menor morbilidad y menor estancia que la FNC, por lo que se recomienda como primera opción terapéutica

INTRODUCTION: Nissen fundoplication (NF) is the most used and effective technique for the treatment of gastroesophageal reflux in children. The laparoscopic approach (LNF) is safe, with low morbidity and high success rate, although some cases require a conventional approach (CNF). The aim of the study is to compare the results between LNF and CNF in our centre. MATERIAL AND METHODS: A retrospective review was performed on patients < 14 years after NF between 2000 and 2015. A comparison was made of the complications, hospital stay, and followup for both approaches. RESULTS: Of the total 75 NF performed, 49 (65.3%) were LNF, 23 (30.7%) CNF, and 3 (4.0%) reconversions. Concomitant laparoscopic gastrostomy was performed in 10.7%, and open gastrostomy in 5.3% of cases. Prior to NF, 10.7% had a gastrostomy. The mean age was 4 years and 68.7% were male. Of the diagnoses, 36% had encephalopathy, 14.7% hiatal hernia, 5.4% oesophageal atresia, and 5.4% an acute life-threatening event. No differences were found in operation time. More than two-thirds (36%) had complications, which were more frequent in the CNF (OR = 3.30, 95% CI: 1.1-9.6). The hospital-stay decreased by 9 days in the LNF (95% CI: 5.5-13.5). Mean follow-up was 26 months (95% CI: 20.9-31.6). Mortality during follow-up was of 5.3% (5 respiratory failure, 1 sudden cardiac death, and 2 due to complications of the encephalopathy), 4.2% required re-fundoplication, 15.8% had symptomatic improvement, and 64.0% had absence of symptoms. CONCLUSIONS: The LNF is an effective technique for the treatment of gastroesophageal reflux, with lower morbidity and shorter hospital stay than CNF. It is recommended as the first surgical option

[Management of gastroesophageal reflux in children. Single centre experience in conventional and laparoscopic Nissen fundoplication in the last 15 years]. / Manejo del reflujo gastroesofágico en niños. Funduplicatura de Nissen convencional y por laparoscopia en los últimos 15 años en un centro especializado.

INTRODUCTION: Nissen fundoplication (NF) is the most used and effective technique for the treatment of gastroesophageal reflux in children. The laparoscopic approach (LNF) is safe, with low morbidity and high success rate, although some cases require a conventional approach (CNF). The aim of the study is to compare the results between LNF and CNF in our centre. MATERIAL AND METHODS: A retrospective review was performed on patients <14years after NF between 2000 and 2015. A comparison was made of the complications, hospital stay, and follow-up for both approaches. RESULTS: Of the total 75 NF performed, 49 (65.3%) were LNF, 23 (30.7%) CNF, and 3 (4.0%) reconversions. Concomitant laparoscopic gastrostomy was performed in 10.7%, and open gastrostomy in 5.3% of cases. Prior to NF, 10.7% had a gastrostomy. The mean age was 4 years and 68.7% were male. Of the diagnoses, 36% had encephalopathy, 14.7% hiatal hernia, 5.4% oesophageal atresia, and 5.4% an acute life-threatening event. No differences were found in operation time. More than two-thirds (36%) had complications, which were more frequent in the CNF (OR=3.30, 95%CI: 1.1-9.6). The hospital-stay decreased by 9 days in the LNF (95%CI: 5.5-13.5). Mean follow-up was 26 months (95%CI: 20.9-31.6). Mortality during follow-up was of 5.3% (5 respiratory failure, 1 sudden cardiac death, and 2 due to complications of the encephalopathy), 4.2% required re-fundoplication, 15.8% had symptomatic improvement, and 64.0% had absence of symptoms. CONCLUSIONS: The LNF is an effective technique for the treatment of gastroesophageal reflux, with lower morbidity and shorter hospital stay than CNF. It is recommended as the first surgical option.

Copper-catalyzed Huisgen 1,3-dipolar cycloaddition under oxidative conditions: polymer-assisted assembly of 4-acyl-1-substituted-1,2,3-triazoles.

We herein document the first example of a reliable copper-catalyzed Huisgen 1,3-dipolar cycloaddition under oxidative conditions. The combined use of two polymer-supported reagents (polystyrene-1,5,7-triazabicyclo[4,4,0]dec-5-ene/Cu and polystyrene-2-iodoxybenzamide) overcomes the thermodynamic instability of copper(I) species toward oxidation, enabling the reliable Cu-catalyzed Huisgen 1,3-dipolar cycloadditions in the presence of an oxidant agent. This polymer-assisted pathway, not feasible under conventional homogeneous conditions, provides a direct assembly of 4-acyl-1-substituted-1,2,3-triazoles, contributing to expand the reliability and scope of Cu(I)-catalyzed alkyne-azide cycloaddition.

Utilidad de la toracoscopia en el tratamiento del absceso pulmonar en la infancia / Thoracoscopic Treatment of Pediatric Lung Abscess

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Formation of 2D colloidal crystals by the Langmuir-Blodgett technique monitored in situ by Brewster angle microscopy.

We report a method that combines Brewster angle microscopy and Langmuir-Blodgett films technique to obtain highly ordered 2D colloidal crystals of nanospheres. The deposition of Langmuir-Blodgett films of silica spheres monitored by Brewster angle microscopy allows to determine with accuracy the best physical conditions to transfer highly ordered monolayers of nanoparticles.