BACKGROUND Intracranial blister-like microaneurysms are an extremely rare disease.Rupture of intracranial aneurysms can lead to subarachnoid hemorrhage(SAH).Patients with SAH may experience severe neurological symptom...BACKGROUND Intracranial blister-like microaneurysms are an extremely rare disease.Rupture of intracranial aneurysms can lead to subarachnoid hemorrhage(SAH).Patients with SAH may experience severe neurological symptoms,including severe headache,nausea,vomiting,transient or persistent loss of consciousness,limb weakness,and blurred vision.Ruptured aneurysms should be surgically treated as soon as possible.Intravascular electrocoagulation is becoming a promising treatment method for intracranial blister-like microaneurysms.The short-term follow-up results demonstrated that this method is safe and effective.This article presents a case of endovascular electrocoagulation for the treatment of a blisterlike microaneurysm.CASE SUMMARY This article reports the case of 71-year-old female patient with an intracranial aneurysm.The patient experienced a sudden headache with vomiting for 3 hours.Brain computed tomography(CT)scan showed a subarachnoid hemorrhage.She was diagnosed with rupture of an aneurysm and subarachnoid hemorrhage.The aneurysm was located in the choroidal segment of the right internal carotid artery.The size of the aneurysm was 2.00 mm×1.80 mm×1.97 mm,and the neck of the aneurysm was less than 0.5 mm wide.We successfully treated this aneurysm with endovascular electrocoagulation,and the patient was safely returned to the ward and discharged after subsequent supportive treatment.CT angiography reexamination 3 months after surgery revealed no contrast agent extravasation in the original lesion,with a good prognosis.CONCLUSION Endovascular electrocoagulation is an effective and safe method for the treatment of intracranial blister-like microaneurysms.展开更多
This work aims to develop a model that will improve the performance and energy efficiency of a novel electrocoagulation(EC)process utilized in wastewater treatment to extrapolate the findings to an industrial scale.Ut...This work aims to develop a model that will improve the performance and energy efficiency of a novel electrocoagulation(EC)process utilized in wastewater treatment to extrapolate the findings to an industrial scale.Utilizing Design of experiments(DOE)allows us to maximize treatment efficiency while minimizing energy consumption.This evaluation was conducted by employing aluminum electrodes as sacrificial anodes.The main factors identified in preliminary experiments are the pH of the medium,the applied potential,and the treatment time.A three-level(3^(3))factorial design was employed to examine the relationship between efficiency performance and energy consumption.Under optimal conditions,treatment efficiency is around 66%for biological oxygen demand within 5 days(BOD_(5)),98%for chemical oxygen demand(COD),associated with a minimum energy consumption of 2.39 kW·h·mg^(-1)of COD.The parameters most significantly influenced by the mathematical models obtained were the potential or applied current,treatment time,and their interaction.The modeling results were also correlated with the experimental results and there were minimal discrepancies.The modeling results were also correlated with the experimental results to assess the accuracy and validity of the model's predictions and there were minimal discrepancies.The results provide promising possibilities for advancing an environmentally friendly wastewater treatment methodology and an economically viable technological solution.展开更多
In order to treat the polluted discharge from El-Jadida,Morocco,a method of electrocoagulation using aluminum electrodes was used.This approach was coupled for the first time with high-frequency electrochemical impeda...In order to treat the polluted discharge from El-Jadida,Morocco,a method of electrocoagulation using aluminum electrodes was used.This approach was coupled for the first time with high-frequency electrochemical impedance spectroscopy(EIS).Significant pollutant abatementwas observed after 30 min,at a current density of 190.5 A·m^(-2),with a specific electrical energy consumption of 1.58 kW·h(per gram of eliminated carbon organic demand(COD))and specific aluminum consumption of 0.11 g·g^(-1):electrocoagulation proved to be particularly effective,achieving 85.7%elimination of COD and a decrease of total dissolved solid(TDS)and electrical conductivity(EC)levels from 2430 mg·L^(-1)to 1773 mg·L^(-1)and from 4230μS·cm^(-1)to 3210μS·cm^(-1),respectively.As for USP and ORP,they decreased from 2.5 to 1.87 and from 244.6 mV to 51 mV,respectively.The inductance of the electrocoagulation system measured by EIS was modeled through an electrical equivalent circuit.When the applied intensity increased,the coagulation resistance increased suddenly when the applied electrical current reached 0.2 A(current density:95.2 A·m^(-2)).At this point,the rate of COD abatement versus SEEC(specific electrical energy consumption decreases which shows that the EC process should be combined with another process to improve its efficiency,such as ultrasound.展开更多
BACKGROUND Thermal damage may lead to inflammation of the peeled mucosal surface during endoscopic submucosal dissection(ESD).AIM To determine the effect of Joule heat on the onset of post-ESD electrocoagulation syndr...BACKGROUND Thermal damage may lead to inflammation of the peeled mucosal surface during endoscopic submucosal dissection(ESD).AIM To determine the effect of Joule heat on the onset of post-ESD electrocoagulation syndrome(PECS).METHODS In this prospective study,PECS was characterized by in-hospital fever(white blood cell count:≥10000μ/L or body temperature≥37.5℃)and abdominal pain(visual analog scale score≥30 mm during hospitalization or increased by≥20 mm from baseline at admission).High Joule heat was defined as 15390 J.Between April 2020 and April 2024,209 patients underwent colorectal ESD;those with intraoperative perforation or penetration were excluded.The remaining 202 patients were divided into the PECS and non-PECS groups.RESULTS PECS occurred in 30(14.9%)patients.Multivariate analysis revealed high Joule heat as an independent factor associated with PECS(odds ratio=7.96;95%confidence interval:2.91-21.8,P<0.01).The procedure time and presence of lesions in the right colon were not associated with PECS.CONCLUSION Accumulated thermal damage on the peeled mucosal surface should be considered during PECS onset.This thermal damage is likely a major component of the mechanism underlying PECS.展开更多
文摘BACKGROUND Intracranial blister-like microaneurysms are an extremely rare disease.Rupture of intracranial aneurysms can lead to subarachnoid hemorrhage(SAH).Patients with SAH may experience severe neurological symptoms,including severe headache,nausea,vomiting,transient or persistent loss of consciousness,limb weakness,and blurred vision.Ruptured aneurysms should be surgically treated as soon as possible.Intravascular electrocoagulation is becoming a promising treatment method for intracranial blister-like microaneurysms.The short-term follow-up results demonstrated that this method is safe and effective.This article presents a case of endovascular electrocoagulation for the treatment of a blisterlike microaneurysm.CASE SUMMARY This article reports the case of 71-year-old female patient with an intracranial aneurysm.The patient experienced a sudden headache with vomiting for 3 hours.Brain computed tomography(CT)scan showed a subarachnoid hemorrhage.She was diagnosed with rupture of an aneurysm and subarachnoid hemorrhage.The aneurysm was located in the choroidal segment of the right internal carotid artery.The size of the aneurysm was 2.00 mm×1.80 mm×1.97 mm,and the neck of the aneurysm was less than 0.5 mm wide.We successfully treated this aneurysm with endovascular electrocoagulation,and the patient was safely returned to the ward and discharged after subsequent supportive treatment.CT angiography reexamination 3 months after surgery revealed no contrast agent extravasation in the original lesion,with a good prognosis.CONCLUSION Endovascular electrocoagulation is an effective and safe method for the treatment of intracranial blister-like microaneurysms.
文摘This work aims to develop a model that will improve the performance and energy efficiency of a novel electrocoagulation(EC)process utilized in wastewater treatment to extrapolate the findings to an industrial scale.Utilizing Design of experiments(DOE)allows us to maximize treatment efficiency while minimizing energy consumption.This evaluation was conducted by employing aluminum electrodes as sacrificial anodes.The main factors identified in preliminary experiments are the pH of the medium,the applied potential,and the treatment time.A three-level(3^(3))factorial design was employed to examine the relationship between efficiency performance and energy consumption.Under optimal conditions,treatment efficiency is around 66%for biological oxygen demand within 5 days(BOD_(5)),98%for chemical oxygen demand(COD),associated with a minimum energy consumption of 2.39 kW·h·mg^(-1)of COD.The parameters most significantly influenced by the mathematical models obtained were the potential or applied current,treatment time,and their interaction.The modeling results were also correlated with the experimental results and there were minimal discrepancies.The modeling results were also correlated with the experimental results to assess the accuracy and validity of the model's predictions and there were minimal discrepancies.The results provide promising possibilities for advancing an environmentally friendly wastewater treatment methodology and an economically viable technological solution.
基金financial support from POC4 allergies project(768686)which received funding from ERA PerMed ERA-NET,and the financial support from Bionanosens project(951887)which received funding from the European Union's Horizon 2020.
文摘In order to treat the polluted discharge from El-Jadida,Morocco,a method of electrocoagulation using aluminum electrodes was used.This approach was coupled for the first time with high-frequency electrochemical impedance spectroscopy(EIS).Significant pollutant abatementwas observed after 30 min,at a current density of 190.5 A·m^(-2),with a specific electrical energy consumption of 1.58 kW·h(per gram of eliminated carbon organic demand(COD))and specific aluminum consumption of 0.11 g·g^(-1):electrocoagulation proved to be particularly effective,achieving 85.7%elimination of COD and a decrease of total dissolved solid(TDS)and electrical conductivity(EC)levels from 2430 mg·L^(-1)to 1773 mg·L^(-1)and from 4230μS·cm^(-1)to 3210μS·cm^(-1),respectively.As for USP and ORP,they decreased from 2.5 to 1.87 and from 244.6 mV to 51 mV,respectively.The inductance of the electrocoagulation system measured by EIS was modeled through an electrical equivalent circuit.When the applied intensity increased,the coagulation resistance increased suddenly when the applied electrical current reached 0.2 A(current density:95.2 A·m^(-2)).At this point,the rate of COD abatement versus SEEC(specific electrical energy consumption decreases which shows that the EC process should be combined with another process to improve its efficiency,such as ultrasound.
文摘BACKGROUND Thermal damage may lead to inflammation of the peeled mucosal surface during endoscopic submucosal dissection(ESD).AIM To determine the effect of Joule heat on the onset of post-ESD electrocoagulation syndrome(PECS).METHODS In this prospective study,PECS was characterized by in-hospital fever(white blood cell count:≥10000μ/L or body temperature≥37.5℃)and abdominal pain(visual analog scale score≥30 mm during hospitalization or increased by≥20 mm from baseline at admission).High Joule heat was defined as 15390 J.Between April 2020 and April 2024,209 patients underwent colorectal ESD;those with intraoperative perforation or penetration were excluded.The remaining 202 patients were divided into the PECS and non-PECS groups.RESULTS PECS occurred in 30(14.9%)patients.Multivariate analysis revealed high Joule heat as an independent factor associated with PECS(odds ratio=7.96;95%confidence interval:2.91-21.8,P<0.01).The procedure time and presence of lesions in the right colon were not associated with PECS.CONCLUSION Accumulated thermal damage on the peeled mucosal surface should be considered during PECS onset.This thermal damage is likely a major component of the mechanism underlying PECS.
