BACKGROUND Penial incarceration(PI)is a rare situation.It is usually caused by a foreign object which strangulates at the base of the penis.PI may derive from pranks,sexual demand,mental disease,or intention to prohib...BACKGROUND Penial incarceration(PI)is a rare situation.It is usually caused by a foreign object which strangulates at the base of the penis.PI may derive from pranks,sexual demand,mental disease,or intention to prohibit urinary disease.Generally,these situations are emergent and immediate treatments are needed.Cases of chronic PI are less reported,and their treating methods are yet to be discussed.CASE SUMMARY We reported a case on treating a 73-year-old male who had PI with a metallic hoop for three months.After multidisciplinary consultation,the operation was performed successfully with the help of a fretsaw.Despite the chronic strangulation,the prognosis of the patient was satisfying.To the best of our knowledge,this case was rare and precious as it featured the longest strangulating time,which might enlighten the treating process of future PI cases.Also,we have reviewed and summarized major published cases to encapsulate appropriate approaches when facing diverse strangulation situations.CONCLUSION The selection of surgical tools depends on the material of the strangulating objects,the availability of equipment,and the severity of the penial damage.The urination function may not be affected after three months of incarceration as in our case,whilst prudent preoperative measures and multidisciplinary evaluations are always essential.Although using a fretsaw is comparatively slow,it is safe and feasible to treat metallic penial incarceration.展开更多
Chemical fixation of carbon dioxide(CO_(2))is an energy-saving method for alleviating the greenhouse gas emissions,whereas it persists a challenge posed by the demand for efficient catalysts.Herein,four unprecedented ...Chemical fixation of carbon dioxide(CO_(2))is an energy-saving method for alleviating the greenhouse gas emissions,whereas it persists a challenge posed by the demand for efficient catalysts.Herein,four unprecedented examples of tetradecanuclear vanadium clusters,namely,[(C_(2)H_(8)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V_(14)-1),[(C_(3)H_(10)N_(2))_(6)(CH_(3)O)_(8)(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V14^(-2)),[(C_(6)H_(14)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)]·5H_(2)O(V14^(-3))and[(C_(4)H_(12)N_(2)O)_(4)(C_(4)H_(11)N_(2)O)_(2)(CH_(3)O)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(28)]·6H_(2)O(V_(14)-4),have been triumphantly designed and constructed under solvothermal conditions.Among them,compounds V_(14)-1–4 are the first cases of tetradecanuclear vanadium clusters without the introduction of inorganic acid radical ions.Two main units[V_(10)^(Ⅳ)V_(4)ⅤO_(26)]8+and[V10ⅣV4ⅤO28]4+represent brand-new configurations of tetradecanuclear vanadium clusters.Given the fact that the presence of V^(Ⅳ)/V^(Ⅴ)can potentially facilitate electron transfer and consequently expedite catalytic reactions,we explored the catalytic activities of these compounds.Remarkably,V_(14)-1 was further used as a heterogeneous catalyst in the CO_(2)fixation into cyclic carbonates under milder conditions(60℃,0.5 MPa)and exhibited higher catalytic activity.Also,the experimental results indicated that V_(14)-1 could efficiently catalyze the sulfoxidation,which could fully convert most sulfides within 40 min at room temperature.Moreover,as a stable heterogeneous catalyst employed in CO_(2)fixation with epoxides and oxidation of sulfides,V_(14)-1 could be consecutively used multiple cycles without losing its catalytic activity.展开更多
文摘BACKGROUND Penial incarceration(PI)is a rare situation.It is usually caused by a foreign object which strangulates at the base of the penis.PI may derive from pranks,sexual demand,mental disease,or intention to prohibit urinary disease.Generally,these situations are emergent and immediate treatments are needed.Cases of chronic PI are less reported,and their treating methods are yet to be discussed.CASE SUMMARY We reported a case on treating a 73-year-old male who had PI with a metallic hoop for three months.After multidisciplinary consultation,the operation was performed successfully with the help of a fretsaw.Despite the chronic strangulation,the prognosis of the patient was satisfying.To the best of our knowledge,this case was rare and precious as it featured the longest strangulating time,which might enlighten the treating process of future PI cases.Also,we have reviewed and summarized major published cases to encapsulate appropriate approaches when facing diverse strangulation situations.CONCLUSION The selection of surgical tools depends on the material of the strangulating objects,the availability of equipment,and the severity of the penial damage.The urination function may not be affected after three months of incarceration as in our case,whilst prudent preoperative measures and multidisciplinary evaluations are always essential.Although using a fretsaw is comparatively slow,it is safe and feasible to treat metallic penial incarceration.
基金supported by the Natural Science Foundation of Jiangsu(BK20191359)the National Natural Science Foundation of China(92161109)+1 种基金the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX22_1343)the Social Science Foundation of Jiangsu(19TQB002)。
文摘Chemical fixation of carbon dioxide(CO_(2))is an energy-saving method for alleviating the greenhouse gas emissions,whereas it persists a challenge posed by the demand for efficient catalysts.Herein,four unprecedented examples of tetradecanuclear vanadium clusters,namely,[(C_(2)H_(8)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V_(14)-1),[(C_(3)H_(10)N_(2))_(6)(CH_(3)O)_(8)(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)](V14^(-2)),[(C_(6)H_(14)N_(2))6(CH_(3)O)8(CH_(3)OH)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(26)]·5H_(2)O(V14^(-3))and[(C_(4)H_(12)N_(2)O)_(4)(C_(4)H_(11)N_(2)O)_(2)(CH_(3)O)_(2)V_(10)^(Ⅳ)V_(4)ⅤO_(28)]·6H_(2)O(V_(14)-4),have been triumphantly designed and constructed under solvothermal conditions.Among them,compounds V_(14)-1–4 are the first cases of tetradecanuclear vanadium clusters without the introduction of inorganic acid radical ions.Two main units[V_(10)^(Ⅳ)V_(4)ⅤO_(26)]8+and[V10ⅣV4ⅤO28]4+represent brand-new configurations of tetradecanuclear vanadium clusters.Given the fact that the presence of V^(Ⅳ)/V^(Ⅴ)can potentially facilitate electron transfer and consequently expedite catalytic reactions,we explored the catalytic activities of these compounds.Remarkably,V_(14)-1 was further used as a heterogeneous catalyst in the CO_(2)fixation into cyclic carbonates under milder conditions(60℃,0.5 MPa)and exhibited higher catalytic activity.Also,the experimental results indicated that V_(14)-1 could efficiently catalyze the sulfoxidation,which could fully convert most sulfides within 40 min at room temperature.Moreover,as a stable heterogeneous catalyst employed in CO_(2)fixation with epoxides and oxidation of sulfides,V_(14)-1 could be consecutively used multiple cycles without losing its catalytic activity.
