We report a case of adult intussusception caused by cecal adenocarcinoma that was treated by laparoscopyassisted ileocecal resection following reduction by contrast enema and preoperative colonoscopy.A 68-yearold male...We report a case of adult intussusception caused by cecal adenocarcinoma that was treated by laparoscopyassisted ileocecal resection following reduction by contrast enema and preoperative colonoscopy.A 68-yearold male with cecal cancer was admitted to our hospital because of colicky abdominal pain after taking a laxative.His abdomen was distended,and a mass was palpable in the right upper quadrant,which appeared as a target-or sausage-shaped lesion by ultrasonograhpy and computed tomography.A contrast enema using water-soluble material showed a cup-shaped filling defect characterized by intussusception in the ascending colon.This round defect with a clear margin was pushed gradually back into the cecum by the enema pressure.Re-occurrence of the intussusception is easilyreleased by colonoscopy.We performed laparoscopyassisted ileocecal resection of a protruding tumor measuring 6.5 cm × 5.0 cm × 3.5 cm from the cecum,with D3 lymph node dissection.Histological examination revealed a well-differentiated adenocarcinoma that had invaded the serosa without permeating the lymphatic or venous capillaries,as well as lymph node metastasis.The postoperative course was uneventful,and the patient has been well without evidence of disease recurrence for 5 years following the operation.Preliminary reduction of adult colonic intussusception before surgical resection is therefore an option in cases of an early and correct diagnosis of intussusception.展开更多
A Pt/graphene‐TiO2catalyst was prepared by a microwave‐assisted solvothermal method and was characterized by X‐ray diffraction,scanning electron microscopy,transmission electron microscopy,cyclic voltammetry,and li...A Pt/graphene‐TiO2catalyst was prepared by a microwave‐assisted solvothermal method and was characterized by X‐ray diffraction,scanning electron microscopy,transmission electron microscopy,cyclic voltammetry,and linear sweep voltammetry.The cubic TiO2particles were approximately60nm in size and were distributed on the graphene sheets.The Pt nanoparticles were uniformly distributed between the TiO2particles and the graphene sheet.The catalyst exhibited a significant improvement in activity and stability towards the oxygen reduction reaction compared with Pt/C,which resulted from the high electronic conductivity of graphene and strong metal‐support interactions.展开更多
Ultrasonically assisted nitration reactions (USANR) with anilides, moderately activated and non-activated aromatic compounds underwent smoothly and afforded good yields of products with high regio selectivity. Observe...Ultrasonically assisted nitration reactions (USANR) with anilides, moderately activated and non-activated aromatic compounds underwent smoothly and afforded good yields of products with high regio selectivity. Observed longer reaction times (6 - 8 hrs.) in metal catalyzed reactions reduced to (1 - 2 hrs.) under sonication. When ortho position is blocked para derivatives are obtained, and ortho nitro products are obtained when para position is blocked. In case of USANR of aromatic carbonyl and related compounds the effect of sonication is much more effective. The reactions could be completed only in few minutes.展开更多
In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assi...In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assistive system is proposed and investigated in this research.In contrast to tradition,it innovatively utilizes an ultrasonic motor and a wire-driven series elastic mechanism to achieve superior system performances in aspects of simple structure,high torque/weight ratio,quiet operation,quick response,favorable electromagnetic compatibility,strong shock resistance,better safety,and accurately stable force control.The proposed device is mainly composed of an ultrasonic motor,a linear spring,a steel wire,four pulleys and one rotating part.To overcome the ultrasonic motor's insufficient output torque,a steel wire and pulleys are smartly combined to directly magnify the torque instead of using a conventional gear reducer.Among the pulleys,there is one tailored pulley playing an important role to keep the reduction ratio as 4.5 constantly.Meanwhile,the prototype is manufactured and its actual performance is verified by experimental results.In a one-second operating cycle,it only takes 86 ms for this mechanism to output an assistive torque of 1.6 N·m.At this torque,the ultrasonic motor's speed is around 4.1 rad/s.Moreover,experiments with different operation periods have been conducted for different application scenarios.This study provides a useful idea for the application of ultrasonic motor in walking assistance system.展开更多
CHINA has been a proactive participant in confronting environmental issues since the early 1990s,when the United Nations Framework Convention on Climate Change was established and the UN-led international climate chan...CHINA has been a proactive participant in confronting environmental issues since the early 1990s,when the United Nations Framework Convention on Climate Change was established and the UN-led international climate change negotiations started to tackle climate challenges.Among its commitments over the years since then is a pledge to reduce emissions.China has since strived to fulfill its responsibilities and obligations.展开更多
目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫...目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫骨平台后外侧骨折的临床疗效差异。方法回顾性选择2020年1月至2022年11月徐州市中心医院骨科胫骨平台后外侧骨折患者70例,根据治疗方法分为ARIF组(结合ERAS,n=32)和ORIF组(未结合ERAS,n=38)。所有患者住院后均通过影像学检查评估骨折类型,比较两组患者的手术时间、住院时间,采用视觉模拟量表(visual analogue scale,VAS)评估患者术后早期疼痛,美国特种外科医院(hospital for special surgery,HSS)评分评估患者术后3个月膝关节功能,比较两组患者术后6个月双侧大腿周径差值。结果ARIF组患者的手术时间显著短于ORIF组[(67.84±9.89)min vs(85.16±9.18)min,P<0.001],住院时间显著短于ORIF组[(7.13±1.41)d vs(8.74±1.84)d,P<0.001]。术后第3天,ARIF组的VAS评分显著低于ORIF组[(4.00±1.44)分vs(5.39±1.24)分,P<0.001]。术后3个月,ARIF组患者的膝关节功能显著优于ORIF组,术后6个月髌骨上10 cm大腿周径差值显著小于ORIF组(P<0.001)。结论与ORIF相比,接受ARIF结合ERAS治疗胫骨平台后外侧骨折的患者术后恢复更快、住院时间更短、临床疗效更确切。展开更多
目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压...目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压在辅助生殖助孕患者中应用的随机对照试验。由两名研究者对文献进行筛选、评价和资料提取,并评价纳入研究的偏倚风险。采用RevMan5.4和Stata17.0软件对纳入文献进行数据分析。结果:共纳入9项研究,1642例患者。Meta分析结果显示:与常规治疗相比,正念减压干预有助于改善辅助生殖助孕患者的心理状态,减轻压力知觉,提高生活质量。以抑郁自评量表(SDS)为评价标准[MD=-8.17,95%CI(-9.16,-7.17),P<0.01],以焦虑自评量表(SAS)为评价标准[MD=-8.71,95%CI(-10.24,-7.18),P<0.01],以压力知觉量表(CPSS)为评价标准[MD=-4.38,95%CI(-5.41,-3.35),P<0.01]。健康状况量表(SF-36量表)的4个评价维度:精神健康[MD=17.50,95%CI(15.67,19.33),P<0.01]、精力[MD=12.05,95%CI(10.18,13.92),P<0.01]、生理职能[MD=8.15,95%CI(6.51,9.79),P<0.01]、生理功能[MD=14.50,95%CI(12.65,16.35),P<0.01]。结论:现有证据表明,正念减压对辅助生殖助孕患者干预效果显著,但受本次纳入研究证据数量、质量限制,尚需开展更多有关辅助生殖助孕患者正念减压干预的高质量研究。展开更多
文摘We report a case of adult intussusception caused by cecal adenocarcinoma that was treated by laparoscopyassisted ileocecal resection following reduction by contrast enema and preoperative colonoscopy.A 68-yearold male with cecal cancer was admitted to our hospital because of colicky abdominal pain after taking a laxative.His abdomen was distended,and a mass was palpable in the right upper quadrant,which appeared as a target-or sausage-shaped lesion by ultrasonograhpy and computed tomography.A contrast enema using water-soluble material showed a cup-shaped filling defect characterized by intussusception in the ascending colon.This round defect with a clear margin was pushed gradually back into the cecum by the enema pressure.Re-occurrence of the intussusception is easilyreleased by colonoscopy.We performed laparoscopyassisted ileocecal resection of a protruding tumor measuring 6.5 cm × 5.0 cm × 3.5 cm from the cecum,with D3 lymph node dissection.Histological examination revealed a well-differentiated adenocarcinoma that had invaded the serosa without permeating the lymphatic or venous capillaries,as well as lymph node metastasis.The postoperative course was uneventful,and the patient has been well without evidence of disease recurrence for 5 years following the operation.Preliminary reduction of adult colonic intussusception before surgical resection is therefore an option in cases of an early and correct diagnosis of intussusception.
基金supported by the National Natural Science Foundation of China(21376113)the Jiangsu Specially Appointed Professor Projectthe Graduate Student Scientific Research Innovation Projects in Jiangsu Province(KYZZ15_0384)~~
文摘A Pt/graphene‐TiO2catalyst was prepared by a microwave‐assisted solvothermal method and was characterized by X‐ray diffraction,scanning electron microscopy,transmission electron microscopy,cyclic voltammetry,and linear sweep voltammetry.The cubic TiO2particles were approximately60nm in size and were distributed on the graphene sheets.The Pt nanoparticles were uniformly distributed between the TiO2particles and the graphene sheet.The catalyst exhibited a significant improvement in activity and stability towards the oxygen reduction reaction compared with Pt/C,which resulted from the high electronic conductivity of graphene and strong metal‐support interactions.
文摘Ultrasonically assisted nitration reactions (USANR) with anilides, moderately activated and non-activated aromatic compounds underwent smoothly and afforded good yields of products with high regio selectivity. Observed longer reaction times (6 - 8 hrs.) in metal catalyzed reactions reduced to (1 - 2 hrs.) under sonication. When ortho position is blocked para derivatives are obtained, and ortho nitro products are obtained when para position is blocked. In case of USANR of aromatic carbonyl and related compounds the effect of sonication is much more effective. The reactions could be completed only in few minutes.
基金Supported by China Scholarship Council(Grant No.202006830033),Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)of China.
文摘In order to improve the elderly people's quality of life,supporting their walking behaviors is a promising technology.Therefore,based on one ultrasonic motor,a wire-driven series elastic mechanism for walking assistive system is proposed and investigated in this research.In contrast to tradition,it innovatively utilizes an ultrasonic motor and a wire-driven series elastic mechanism to achieve superior system performances in aspects of simple structure,high torque/weight ratio,quiet operation,quick response,favorable electromagnetic compatibility,strong shock resistance,better safety,and accurately stable force control.The proposed device is mainly composed of an ultrasonic motor,a linear spring,a steel wire,four pulleys and one rotating part.To overcome the ultrasonic motor's insufficient output torque,a steel wire and pulleys are smartly combined to directly magnify the torque instead of using a conventional gear reducer.Among the pulleys,there is one tailored pulley playing an important role to keep the reduction ratio as 4.5 constantly.Meanwhile,the prototype is manufactured and its actual performance is verified by experimental results.In a one-second operating cycle,it only takes 86 ms for this mechanism to output an assistive torque of 1.6 N·m.At this torque,the ultrasonic motor's speed is around 4.1 rad/s.Moreover,experiments with different operation periods have been conducted for different application scenarios.This study provides a useful idea for the application of ultrasonic motor in walking assistance system.
文摘CHINA has been a proactive participant in confronting environmental issues since the early 1990s,when the United Nations Framework Convention on Climate Change was established and the UN-led international climate change negotiations started to tackle climate challenges.Among its commitments over the years since then is a pledge to reduce emissions.China has since strived to fulfill its responsibilities and obligations.
文摘目的探讨关节镜辅助复位内固定(arthroscopically-assisted reduction and internal fixation,ARIF)结合加速康复外科(enhanced recovery after surgery,ERAS)理念与开放复位内固定(open reduction and internal fixation,ORIF)治疗胫骨平台后外侧骨折的临床疗效差异。方法回顾性选择2020年1月至2022年11月徐州市中心医院骨科胫骨平台后外侧骨折患者70例,根据治疗方法分为ARIF组(结合ERAS,n=32)和ORIF组(未结合ERAS,n=38)。所有患者住院后均通过影像学检查评估骨折类型,比较两组患者的手术时间、住院时间,采用视觉模拟量表(visual analogue scale,VAS)评估患者术后早期疼痛,美国特种外科医院(hospital for special surgery,HSS)评分评估患者术后3个月膝关节功能,比较两组患者术后6个月双侧大腿周径差值。结果ARIF组患者的手术时间显著短于ORIF组[(67.84±9.89)min vs(85.16±9.18)min,P<0.001],住院时间显著短于ORIF组[(7.13±1.41)d vs(8.74±1.84)d,P<0.001]。术后第3天,ARIF组的VAS评分显著低于ORIF组[(4.00±1.44)分vs(5.39±1.24)分,P<0.001]。术后3个月,ARIF组患者的膝关节功能显著优于ORIF组,术后6个月髌骨上10 cm大腿周径差值显著小于ORIF组(P<0.001)。结论与ORIF相比,接受ARIF结合ERAS治疗胫骨平台后外侧骨折的患者术后恢复更快、住院时间更短、临床疗效更确切。
文摘目的:系统评价正念减压对辅殖助孕患者的干预效果。方法:检索中国知网、中国生物医学文献数据库、万方数据知识服务平台、维普、PubMed、The Cochrane Library、Embase、Web of Science数据库,收集建库至2023年12月发表的有关正念减压在辅助生殖助孕患者中应用的随机对照试验。由两名研究者对文献进行筛选、评价和资料提取,并评价纳入研究的偏倚风险。采用RevMan5.4和Stata17.0软件对纳入文献进行数据分析。结果:共纳入9项研究,1642例患者。Meta分析结果显示:与常规治疗相比,正念减压干预有助于改善辅助生殖助孕患者的心理状态,减轻压力知觉,提高生活质量。以抑郁自评量表(SDS)为评价标准[MD=-8.17,95%CI(-9.16,-7.17),P<0.01],以焦虑自评量表(SAS)为评价标准[MD=-8.71,95%CI(-10.24,-7.18),P<0.01],以压力知觉量表(CPSS)为评价标准[MD=-4.38,95%CI(-5.41,-3.35),P<0.01]。健康状况量表(SF-36量表)的4个评价维度:精神健康[MD=17.50,95%CI(15.67,19.33),P<0.01]、精力[MD=12.05,95%CI(10.18,13.92),P<0.01]、生理职能[MD=8.15,95%CI(6.51,9.79),P<0.01]、生理功能[MD=14.50,95%CI(12.65,16.35),P<0.01]。结论:现有证据表明,正念减压对辅助生殖助孕患者干预效果显著,但受本次纳入研究证据数量、质量限制,尚需开展更多有关辅助生殖助孕患者正念减压干预的高质量研究。
