BACKGROUND Colonoscopy is widely used for examination,diagnosis,and treatment because of its low incidence of associated complications.Post-colonoscopy appendicitis(PCA)is very rare and is easily misdiagnosed as elect...BACKGROUND Colonoscopy is widely used for examination,diagnosis,and treatment because of its low incidence of associated complications.Post-colonoscopy appendicitis(PCA)is very rare and is easily misdiagnosed as electrocoagulation syndrome or colon perforation.Therefore,clinicians should pay close attention to this complication.CASE SUMMARY A 47-year-old female patient underwent a colonoscopy for a systematic physical examination,and the procedure was uneventful with normal endoscopic and histologic findings.However,the bowel preparation was suboptimal(Boston 2-3-2).After the examination,the patient experienced pain in the lower abdomen,which progressively worsened.Computed tomography of the lower abdomen and pelvis revealed appendiceal calcular obstruction and appendicitis.As the patient refused surgery,she was managed with antibiotics and recovered well.CONCLUSION In the current literature,the definition of PCA remains unclear.However,abdominal pain after colonoscopy should be differentiated from acute appen-dicitis.展开更多
Magnetic and magnetocaloric properties of HoFe_(1-x)Co_(x)Al(x = 0, 0.3) were investigated. Both HoFeAl and HoFe_(0.7)Co_(0.3) Al undergo a second-order ferromagnetic(FIM) to paramagnetic(PM) transition at Curie tempe...Magnetic and magnetocaloric properties of HoFe_(1-x)Co_(x)Al(x = 0, 0.3) were investigated. Both HoFeAl and HoFe_(0.7)Co_(0.3) Al undergo a second-order ferromagnetic(FIM) to paramagnetic(PM) transition at Curie temperatures(TC) of 87 and 82 K, respectively. The magnetocaloric effect is improved by the introduction of Co in HoFeAl compound. For a field change from 0 to 5 T,the maximum values of magnetic entropy change(﹣△SM)are 7.0 J·kg^(-1)·K^(-1) for HoFeAl and 8.6 J·kg^(-1)·K^(-1) for HoFe_(0.7)Co_(0.3) Al. In addition, the refrigerant capacity(RC)is enhanced largely from 416.2 J·kg^(-1) for HoFeAl to561.9 J·kg^(-1) for HoFe_(0.7)Co_(0.3) Al. This large RC is attributed to the large ﹣?SM and the wide temperature span of ?SM peak in HoFe_(0.7)Co_(0.3) Al compound. The physical mechanism of improvement in magnetocaloric effect by Co substitution in HoFeAl was also discussed in detail.展开更多
文摘BACKGROUND Colonoscopy is widely used for examination,diagnosis,and treatment because of its low incidence of associated complications.Post-colonoscopy appendicitis(PCA)is very rare and is easily misdiagnosed as electrocoagulation syndrome or colon perforation.Therefore,clinicians should pay close attention to this complication.CASE SUMMARY A 47-year-old female patient underwent a colonoscopy for a systematic physical examination,and the procedure was uneventful with normal endoscopic and histologic findings.However,the bowel preparation was suboptimal(Boston 2-3-2).After the examination,the patient experienced pain in the lower abdomen,which progressively worsened.Computed tomography of the lower abdomen and pelvis revealed appendiceal calcular obstruction and appendicitis.As the patient refused surgery,she was managed with antibiotics and recovered well.CONCLUSION In the current literature,the definition of PCA remains unclear.However,abdominal pain after colonoscopy should be differentiated from acute appen-dicitis.
基金financially supported by the Fundamental Research Funds from National Institute of Metrology(Nos.35-ALC1514-15 and 35-AHY1323-13)the National Natural Science Foundation of China(No.51402031)。
文摘Magnetic and magnetocaloric properties of HoFe_(1-x)Co_(x)Al(x = 0, 0.3) were investigated. Both HoFeAl and HoFe_(0.7)Co_(0.3) Al undergo a second-order ferromagnetic(FIM) to paramagnetic(PM) transition at Curie temperatures(TC) of 87 and 82 K, respectively. The magnetocaloric effect is improved by the introduction of Co in HoFeAl compound. For a field change from 0 to 5 T,the maximum values of magnetic entropy change(﹣△SM)are 7.0 J·kg^(-1)·K^(-1) for HoFeAl and 8.6 J·kg^(-1)·K^(-1) for HoFe_(0.7)Co_(0.3) Al. In addition, the refrigerant capacity(RC)is enhanced largely from 416.2 J·kg^(-1) for HoFeAl to561.9 J·kg^(-1) for HoFe_(0.7)Co_(0.3) Al. This large RC is attributed to the large ﹣?SM and the wide temperature span of ?SM peak in HoFe_(0.7)Co_(0.3) Al compound. The physical mechanism of improvement in magnetocaloric effect by Co substitution in HoFeAl was also discussed in detail.
