Anomalous Josephson current in quantum anomalous Hall insulator-based superconducting junctions with a domain wall structure

We theoretically study the Josephson effect in a quantum anomalous Hall insulator(QAHI)nanoribbon with a domain wall structure and covered by the superconductor.The anomalous Josephson current,the nonzero supercurrent at the zero superconducting phase difference,appears with the nonzero magnetization and the suitable azimuth angle of the domain wall.Dependent on the configuration of the domain wall,the anomalous current peaks in the Bloch type but disappears in the Néel type because the y-component of magnetization is necessary to break symmetry to arouse the anomalous current.The phase shift of the anomalous current is tunable by the magnetization,the azimuth angle,or the thickness of the domain wall.By introducing a bare QAHI region in the middle of the junction which is not covered by the superconductor,the anomalous Josephson effect is enhanced such that the phase shift can exceedπ.Thus,a continuous change between 0 andπjunctions is realized via regulating the configuration of the domain wall or the magnetization strength.As long as an s-wave superconductor is placed on the top of the QAHI with a domain wall structure,this proposal can be experimentally fabricated and useful for the phase battery or superconducting quantum bit.

Diagnosis and treatment of prostate abscess:Report of 6 cases

Objective:Toimprove the diagnosis and treatment of prostate abscess by summing up experience of 6 cases of prostatic abscess.Methods:From May 2014 to October 2019,6 cases of prostatic abscess were diagnosed by means of clinical manifestations combined with digital rectal examination(DRE),ultrasound and computed tomography(CT).Five cases were performed transurethral incision and drainage for prostatic abscess,and 1 case underwent ultrasound-guided perineal drainage.Results:The symptoms of the 6 patients disappeared after drainage and recovered well without recurrence.Conclusions:The clinical manifestations combined with DRE,ultrasonography and CT are beneficial to the diagnosis of prostatic abscess.Both transurethral incision and drainage and ultrasound-guided perineal drainage are effective way to treat prostate abscess.

Comparison of the postoperative trauma of the retroperitoneal laparoscopic intrasinusal pyelolithotomy and percutaneous nephrolithotomy

Objective: To study the postoperative trauma of the retroperitoneal laparoscopic intrasinusal pyelolithotomy (RLIP) and percutaneous nephrolithotomy (PCNL). Methods: A total of 118 patients who were diagnosed with single pelvis calculus in Shanghai Punan Hospital of Pudong New District between September 2013 and February 2017 were selected and randomly divided into RLIP group and PCNL group who received retroperitoneal laparoscopic intrasinusal pyelolithotomy and percutaneous nephrolithotomy respectively. The removal of the stones was observed 1 week and 4 weeks after surgery, and 3mL of cubital venous blood was collected 3 d and 7 d after operation to detect the renal function indicators, inflammatory markers and stress indicators. Results: The stone removal success rate of RLIP group 1 week and 4 weeks after operation were significantly higher than those of PCNL group, serum BUN, Scr and Cys-C contents as well as eGFR levels were not significantly different between RLIP group and PCNL group 3 d and 7 d after operation, and serum Cor, NE, HSP70, NO, IL-6, hs-CRP, TNF-α and PGE2 contents of RLIP group 3 d and 7 d after operation were significantly lower than those of PCNL group. Conclusion: RLIP is significantly better than PCNL in stone removal and causes significantly less postoperative trauma than PCNL.

深度神经肌肉阻滞对机器人辅助腹腔镜前列腺癌根治术呼吸顺应性和手术条件的影响:随机临床研究

目的:机器人辅助前列腺癌根治术中需要头低位和气腹,这将严重干扰呼吸顺应性(Crs)。本研究比较机器人辅助腹腔镜前列腺癌根治术在相同气腹压力下不同程度的神经肌肉阻滞对Crs的影响。创新点:不同深度神经肌肉阻滞对机器人辅助前列腺癌根治术Crs的观察。方法:将100例接受机器人辅助腹腔镜前列腺癌根治术的患者随机分配到中度神经肌肉阻滞组和深度神经肌肉阻滞组,每组50例。应用罗库溴铵维持神经肌肉阻滞。保持对4个成串刺激1~2个反应为中度神经肌肉阻滞组;对4个成串刺激无反应,而对强直后刺激1~2个反应为深度神经肌肉阻滞组。两组气腹压力均为10 mm Hg。记录麻醉诱导后及气腹0、30、60和90 min的吸气峰值压力、平均压力、Crs和气道阻力。手术结束时对手术条件进行评估。结论:在机器人辅助腹腔镜前列腺癌根治术中,相同的气腹压力下,深度神经肌肉阻滞不能改善Crs和手术条件,但能显著降低术中体动。

Magnetic flux control of chiral Majorana edge modes in topological superconductor

We study the transport of chiral Majorana edge modes(CMEMs) in a hybrid quantum anomalous Hall insulator-topological superconductor(QAHI-TSC) system in which the TSC region contains a Josephson junction and a cavity. The Josephson junction undergoes a topological transition when the magnetic flux through the cavity passes through half-integer multiples of magnetic flux quantum. For the trivial phase, the CMEMs transmit along the QAHI-TSC interface as without magnetic flux. However, for the nontrivial phase, a zero-energy Majorana state appears in the cavity, leading to that a CMEM can resonantly tunnel through the Majorana state to a different CMEM. These findings may provide a feasible scheme to control the transport of CMEMs by using the magnetic flux and the transport pattern can be customized by setting the size of the TSC.

Low Concordance Between Blood Pressures Measured in Periodic Health Examinations and in a Workplace-Based Hypertension Management Program

Poor adherence to standard protocols of blood pressure(BP)measurement in routine clinical practice leads to higher readings than“research-quality”measurements.Whether this phenomenon exists in periodic health examinations was unknown.We aimed to explore the concordance between BP measurements in periodic health examinations and those measured following a standard measurement protocol.We used data from the Kailuan Study,an ongoing longitudinal cohort study in China,of which participants received biennial health examinations in health management centers.In addition,BPs were measured following standard protocols in a workplace-based hypertension management program nested in the Kailuan Study.We compared BP readings of the same person between the two settings using generalized linear mixed-effects models.A total of 3988 men(the mean age was 44.9 years)had at least two BP measurements both in health examinations and management program with a time interval between the two settings that less than 90 days.The mean systolic blood pressures(SBP)and diastolic blood pressures(DBP)in health examinations were 4.2(95%CI 3.9–4.5)mm Hg and 3.3(95%CI 3.1–3.5)mm Hg higher than those in the management program,respectively.Bland–Altman analyses showed the wide agreement inter-vals ranging from-27.7-to 36.5-mm Hg for SBP and-18.3-to 24.7-mm Hg for DBP.In conclusion,BP measurements in periodic health examinations were generally higher than BPs measured following a standard protocol.Our findings highlight the importance of standard BP measurement to avoid overestimation of hypertension prevalence and treatment initiation.