BACKGROUND Laparoscopic cervical cerclage is performed for patients with abnormal cervical anatomy and/or transvaginal cervical cerclage failure.However,the method of removing the stitches to allow labour induction re...BACKGROUND Laparoscopic cervical cerclage is performed for patients with abnormal cervical anatomy and/or transvaginal cervical cerclage failure.However,the method of removing the stitches to allow labour induction remains controversial.According to published literature,stitches are removed through laparoscopic or transvaginal methods.Herein,we report,for the first time,a case of a patient who had undergone laparoscopic cerclage,and then underwent removal of stitches by laparotomy and labour induction in the third trimester of pregnancy.CASE SUMMARY A patient who underwent laparoscopic cervical cerclage due to cervical insufficiency became pregnant naturally following the operation.At 31 wk of pregnancy,severe foetal malformations were found.To successfully induce labour,cerclage stitches were removed via laparotomy,and rivanol was injected directly into the uterus.Following successful induction of labour,the patient delivered a dead foetus.CONCLUSION This report provides a reliable scheme of removing cerclage stitches for patients who have undergone laparoscopic cerclage but experience severe foetal malformations.展开更多
A fibrous adsorbent for arsenic (As) removal was synthesized with nonwoven cotton fabric as a trunk polymer. 2-hydroxyethyl methacrylate phosphoric acid monomer which composed of phosphoric acid mono (50%) and di (50%...A fibrous adsorbent for arsenic (As) removal was synthesized with nonwoven cotton fabric as a trunk polymer. 2-hydroxyethyl methacrylate phosphoric acid monomer which composed of phosphoric acid mono (50%) and di (50%) ethyl methacrylate ester was introduced with radiation-induced graft polymerization onto nonwoven cotton fabric. The degree of grafting of 130% was obtained at irradiation dose of 20 kGy with 5% of monomer solution for 2 hours reaction time at 40?C reaction temperature. After the grafted material was contacted with 10 mmol/L of zirconium (Zr) solution at pH 1, 0.38 mmol/g of Zr was loaded on phosphoric units as a functional group for As(V) removal. The resulting adsorbent was evaluated by column mode adsorption with 1 mg/L of As(V) solution at various pH with space velocity 200 h–1. The maximum capacity of As(V) adsorption was 0.1 mmol/g at pH 2.展开更多
A novel fibre-coupling zig-zag beam deflection technology is developed to investigate the attenuation process of laser-induced shock waves in air. Utilizing ordinal reflections of probe beams by a pair of parallel mir...A novel fibre-coupling zig-zag beam deflection technology is developed to investigate the attenuation process of laser-induced shock waves in air. Utilizing ordinal reflections of probe beams by a pair of parallel mirrors, a zig-zag beam field is formed, which has eleven probe beams in the horizontal plane. When a laser-induced shock wave propagates through the testing field, it causes eleven deflection signals one after another. The whole attenuation process of the shock wave in air can be detected and illuminated clearly on one experimental curve.展开更多
The Westinghouse Nuclear Safety Advisory Letter NSAL-09-8 investigated the possibility of presence of vapor in RHR （residual heat removal） system in modes 3/4 LOCA （loss-of-coolant accident） conditions. This conce...The Westinghouse Nuclear Safety Advisory Letter NSAL-09-8 investigated the possibility of presence of vapor in RHR （residual heat removal） system in modes 3/4 LOCA （loss-of-coolant accident） conditions. This concerns the Westinghouse standard three-loops plant for which the RHR is the low pressure part of the St （safety injection）. In some cases one or both RHR trains may become inoperable for SI function. As a response to this letter, Westinghouse Electric Belgium is providing RELAP5 analyzes for Westinghouse NSSS （nuclear steam supply system） European plants to assess the thermal hydraulic behavior of the RHR suction piping system for ECCS （emergency core cooling system） initiation events postulated to occur during startup/shutdown operations. Several concerns including condensation induced water hammer and voiding at the RHR pump have been investigated. As a conclusion, the analysis allowed to define the bounding hot leg temperature conditions under which both RHR trains remain safely operable. These bounding conditions are then implemented by the customer in their OPs （operating procedures） to achieve safe operations and successful accident management.展开更多
激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发...激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发展的机制具有重要意义。SNOFH中医病机责之于脾肾亏虚为本,瘀血为病,痰阻为渐,毒聚为损。“成骨-成血管耦联”机制与“瘀去-新生-骨合”中医理论存在高度契合性。越来越多的临床证据表明中医药治疗SNOFH不仅具有疗效显著、不良反应小、价格低廉等优势,还能提高患者生存质量,为促进股骨头血管重建与再生以及股骨头坏死骨修复等发挥重要作用。基于“瘀去-新生-骨合”理论,临床上多采用补肾活血类中药及中药复方用于SNOFH防治,运用“成骨”之健脾补肾药,“成血管”之活血化瘀药,祛除“抑制因素”之化痰药、祛湿药,有步骤、有层次的治疗SNOFH取得显著效果。因此,从“成骨-成血管耦联”角度探讨SNOFH中医药干预的科学内涵已成为当今研究新热点,能够为后续SNOFH的防治研究和新药研发提供理论参考和借鉴。展开更多
文摘BACKGROUND Laparoscopic cervical cerclage is performed for patients with abnormal cervical anatomy and/or transvaginal cervical cerclage failure.However,the method of removing the stitches to allow labour induction remains controversial.According to published literature,stitches are removed through laparoscopic or transvaginal methods.Herein,we report,for the first time,a case of a patient who had undergone laparoscopic cerclage,and then underwent removal of stitches by laparotomy and labour induction in the third trimester of pregnancy.CASE SUMMARY A patient who underwent laparoscopic cervical cerclage due to cervical insufficiency became pregnant naturally following the operation.At 31 wk of pregnancy,severe foetal malformations were found.To successfully induce labour,cerclage stitches were removed via laparotomy,and rivanol was injected directly into the uterus.Following successful induction of labour,the patient delivered a dead foetus.CONCLUSION This report provides a reliable scheme of removing cerclage stitches for patients who have undergone laparoscopic cerclage but experience severe foetal malformations.
文摘A fibrous adsorbent for arsenic (As) removal was synthesized with nonwoven cotton fabric as a trunk polymer. 2-hydroxyethyl methacrylate phosphoric acid monomer which composed of phosphoric acid mono (50%) and di (50%) ethyl methacrylate ester was introduced with radiation-induced graft polymerization onto nonwoven cotton fabric. The degree of grafting of 130% was obtained at irradiation dose of 20 kGy with 5% of monomer solution for 2 hours reaction time at 40?C reaction temperature. After the grafted material was contacted with 10 mmol/L of zirconium (Zr) solution at pH 1, 0.38 mmol/g of Zr was loaded on phosphoric units as a functional group for As(V) removal. The resulting adsorbent was evaluated by column mode adsorption with 1 mg/L of As(V) solution at various pH with space velocity 200 h–1. The maximum capacity of As(V) adsorption was 0.1 mmol/g at pH 2.
基金Supported by the National Natural Science Foundation of China under Grant No 60378003.
文摘A novel fibre-coupling zig-zag beam deflection technology is developed to investigate the attenuation process of laser-induced shock waves in air. Utilizing ordinal reflections of probe beams by a pair of parallel mirrors, a zig-zag beam field is formed, which has eleven probe beams in the horizontal plane. When a laser-induced shock wave propagates through the testing field, it causes eleven deflection signals one after another. The whole attenuation process of the shock wave in air can be detected and illuminated clearly on one experimental curve.
文摘The Westinghouse Nuclear Safety Advisory Letter NSAL-09-8 investigated the possibility of presence of vapor in RHR （residual heat removal） system in modes 3/4 LOCA （loss-of-coolant accident） conditions. This concerns the Westinghouse standard three-loops plant for which the RHR is the low pressure part of the St （safety injection）. In some cases one or both RHR trains may become inoperable for SI function. As a response to this letter, Westinghouse Electric Belgium is providing RELAP5 analyzes for Westinghouse NSSS （nuclear steam supply system） European plants to assess the thermal hydraulic behavior of the RHR suction piping system for ECCS （emergency core cooling system） initiation events postulated to occur during startup/shutdown operations. Several concerns including condensation induced water hammer and voiding at the RHR pump have been investigated. As a conclusion, the analysis allowed to define the bounding hot leg temperature conditions under which both RHR trains remain safely operable. These bounding conditions are then implemented by the customer in their OPs （operating procedures） to achieve safe operations and successful accident management.
文摘激素性股骨头坏死(steroid-induced necrosis of the femoral head, SNOFH)是骨科常见难治性疾病,又被视为“不死癌症”,若不及时干预将导致患者面临人工全髋关节置换术的风险。近些年研究证实,“成骨-成血管耦联”途径研究SNOFH发生发展的机制具有重要意义。SNOFH中医病机责之于脾肾亏虚为本,瘀血为病,痰阻为渐,毒聚为损。“成骨-成血管耦联”机制与“瘀去-新生-骨合”中医理论存在高度契合性。越来越多的临床证据表明中医药治疗SNOFH不仅具有疗效显著、不良反应小、价格低廉等优势,还能提高患者生存质量,为促进股骨头血管重建与再生以及股骨头坏死骨修复等发挥重要作用。基于“瘀去-新生-骨合”理论,临床上多采用补肾活血类中药及中药复方用于SNOFH防治,运用“成骨”之健脾补肾药,“成血管”之活血化瘀药,祛除“抑制因素”之化痰药、祛湿药,有步骤、有层次的治疗SNOFH取得显著效果。因此,从“成骨-成血管耦联”角度探讨SNOFH中医药干预的科学内涵已成为当今研究新热点,能够为后续SNOFH的防治研究和新药研发提供理论参考和借鉴。
