A meta-analysis on advantages of peripheral nerve block post-total knee arthroplasty

( Di You ),( Lu Qin ),( Kai Li ),( Di Li ),( Guoqing Zhao ),( Longyun Li ) 대한통증학회 2021 The Korean Journal of Pain Vol.34 No.3

Background: Postoperative pain management is crucial for patients undergoing total knee arthroplasty (TKA). There have been many recent clinical trials on post-TKA peripheral nerve block; however, they have reported inconsistent findings. In this meta-analysis, we aimed to comprehensively analyze studies on post-TKA analgesia to provide evidence-based clinical suggestions. Methods: We performed a computer-based query of PubMed, Embase, the Cochrane Library, and the Web of Science to retrieve related articles using neurothe following search terms: nerve block, nerve blockade, chemodenervation, chemical neurolysis, peridural block, epidural anesthesia, extradural anesthesia, total knee arthroplasty, total knee replacement, partial knee replacement, and others. After quality evaluation and data extraction, we analyzed the complications, visual analogue scale (VAS) score, patient satisfaction, perioperative opioid dosage, and rehabilitation indices. Evidence was rated using the Grading of Recommendations Assessment, Development, and Evaluation approach. Results: We included 16 randomized controlled trials involving 981 patients (511 receiving peripheral nerve block and 470 receiving epidural block) in the final analysis. Compared with an epidural block, a peripheral nerve block significantly reduced complications. There were no significant between-group differences in the postoperative VAS score, patient satisfaction, perioperative opioid dosage, and rehabilitation indices. Conclusions: Our findings demonstrate that the peripheral nerve block is superior to the epidural block in reducing complications without compromising the analgesic effect and patient satisfaction. Therefore, a peripheral nerve block is a safe and effective postoperative analgesic method with encouraging clinical prospects.

중국 조손가정 초기 성인기 손자녀의 부모화 경험과 대인관계문제 간의 관계에 대한 연구 -불안 애착의 매개효과를 중심으로

조몽적(Meng Di Zhao),박정윤(Jeong Yun Park) 한국가족치료학회 2021 가족과 가족치료 Vol.29 No.1

본 연구는 부모화 경험, 불안 애착이 조손가정 초기 성인기 손자녀의 대인관계문제에 미치는 영향을 밝히고자 하는 목적으로 실시되었다. 중국에 거주하는 18~29세의 조부모와 단독적으로 3년 이상의 생활경험을 갖고 있는 209명을 대상으로 연구를 진행하였으며, SPSS 23.0와 Process Macro 3.3 프로그램을 사용하여 통계 분석을 실시하였다. 주요 결과, 첫째, 조손가정 초기 성인기 손자녀의 부모화 경험, 불안 애착, 대인관계문제는 중간보다 조금 높은 수준으로 나타났다. 둘째, 부모화 경험과 불안 애착이 대인관계문제에 유의미한 영향을 미치는 것으로 나타났으며, 부모화 경험과 대인관계문제 간의 관계에서 불안 애착의 부분 매개효과가 확인되었다. 따라서 본 연구는 조손가정 손자녀의 부모화 경험과 대인관계문제에 주목할 필요가 있다는 것을 보이고 조손가정을 위한 프로그램과 교육을 개발하는 필요성을 제시하였고 상담 및 치료 개입에 대해 논의하였다. Objectives: The purpose of this study is to identify the influence of parentification and anxiety attachment on interpersonal relationship problems among early adult grandchildren in multigenerational households. Methods: The study was conducted on 209 participants coming from multigenerational households aged 18 to 29 living in China, and the collected data were analyzed using SPSS 23.0 and SPSS PROCESS macro 3.3 Results: First, the grandchildren have experienced extensive parentification, have formed anxiety attachment, and have faced problems in interpersonal relationships. Second, parentification and anxiety attachment had significant effects on interpersonal problems, and a partial mediating effect of anxiety attachment was confirmed in the relationship between parentification and interpersonal problems. Conclusions: This study suggests that it is necessary to pay attention to the parentification and interpersonal relationships and to develop meaningful programs for multigenerational households.

Prevalence of Hymenolepis nana and H. diminuta from Brown Rats (Rattus norvegicus) in Heilongjiang Province, China

Di Yang,Wei Zhao,Yichi Zhang,Aiqin Liu 대한기생충학열대의학회 2017 The Korean Journal of Parasitology Vol.55 No.3

Mutations in Patients with Hyperphenylalaninemia in Zhejiang, China

Di Ying Shen,Wei Wu,Zheng Yan Zhao 한국유전학회 2009 Genes & Genomics Vol.31 No.1

Ram semen preserved at 0℃ with soybean lecithin Tris-based extender substituted for egg yolk

Zhao, Jian-qing,Xiao, Guo-liang,Zhu, Wen-liang,Fang, Di,Li, Na,Han, Chun-mei,Gao, Qing-hua Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.2

Objective: The present study evaluated the preservation of ram semen at 0℃ using soybean lecithin with a Tris-fructose extender. Methods: Semen was collected by artificial vagina ejaculation from six rams with proven fertility. High quality ejaculates were diluted by soybean lecithin (0.25%, 0.5%, 0.75%, 1.0%, 1.25%) using Tris-fructose extender and control (Tris-fructose egg yolk extender), respectively. The ejaculates were diluted to a concentration of 5×108 sperm/mL, followed by cooling to 0℃ in 90 min and maintaining the temperature for 12 days. The diluted semen samples were examined and recorded for sperm progressive motility, acrosome integrity at 0, 24, 72, 144, 216, 288 h, respectively. Two hundred and twenty-three ewes were inseminated for 216 h with optimal soybean lecithin concentrated semen or control via trans-cervical insemination. Results: The results showed that there were no differences in sperm progressive motility at 0, 24, 72, and 144 h (p>0.05). After 216 h, the sperm progressive motility in the control group and 0.5% concentration groups was significantly higher when compared to 0.25% concentration (p<0.05). The 0.5% concentration group demonstrated the highest survival rate and had no difference with the control group (p>0.05). At 216 h, the sperm progressive motility of all groups was still above 50%. The acrosome integrity of all groups was decreased with prolongation of storage time, but there was no difference at each time point (p>0.05). There was no significant difference in the lambing rate and pregnancy rate between the 0.5% concentration group and the control group (p>0.05). Conclusion: These results suggest that ram sperm is capable of fertilization after preservation at 0℃ with 0.5% of soybean lecithin in Tris-based extender substituted for egg yolk and produce normal offspring after insemination.

Three New Iridoid Glucosides from the Roots of Patrinia scabra

Di, Lei,Li, Ning,Zu, Ling-Bo,Wang, Kai-Jin,Zhao, You-Xing,Wang, Zhi Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.9

To probe the chemical constituents of Patrinia scabra, we undertook the phytochemical investigation on its roots, which led to the isolation and elucidation of three new iridoid glucosides, scabroside A-C (1-3), along with three known iridoids, jatamanin J (4), isopatriscabroside I (5) and loganic acid (6) from the aqueous fraction of the ethanolic extract of the roots. The structures and relative configurations of the three new compounds were elucidated by spectroscopic methods including IR, UV, MS, 1D and 2D NMR experiments. Compound 3 was an unusual iridoid with an oxygen bridge connecting C-3 and C-8.

An Optimized Control Method Based on Dual Three-Level Inverters for Open-end Winding Induction Motor Drives

Di Wu,Liang-Cheng Su,Xiao-Jie Wu,Guo-Dong Zhao 전력전자학회 2014 JOURNAL OF POWER ELECTRONICS Vol.14 No.2

An optimized space vector pulse width modulation (SVPWM) method with common mode voltage elimination and neutral point potential balancing is proposed for an open-end winding induction motor. The motor is fed from both of the ends with two neutral point clamped (NPC) three-level inverters. In order to eliminate the common mode voltage of the motor ends and balance the neutral point potential of the DC link, only zero common mode voltage vectors are used and a balancing control factor is gained from calculation in the strategy. In order to improve the harmonic characteristics of the output voltages and currents, the balancing control factor is regulated properly and the theoretical analysis is provided. Simulation and experimental results show that by adopting the proposed method, the common mode voltage can be completely eliminated, the neutral point potential can be accurately balanced and the harmonic performance for the output voltages and currents can be effectively improved.

The Relative Influence of Diet and Physical Activity on Obesity in China

Cui Zhao-Hui,Li Yan-Ping,Di Yu-Feng,Ba Lei,Hu Xiaoqi,Ma Guan-Sheng The Korean Society of Community Nutrition 2004 Journal of community nutrition Vol.6 No.3

The purpose of this study is to investigate the relative influence of diet and physical activity on obesity. The subjects were 155 adults aged 35-52 years from 24 neighborhood committees in 4 urban districts of Beijing (male : 78, female : 77). They were divided into normal weight, overweight and obese groups according to their BMI. The general information of the subjects was collected by interview-administered questionnaire. Dietary intake was obtained by three-day(two weekdays and one weekend day) food weighted method, physical activity was assessed by a validated combination of data obtained from activity monitors, bicycling information and activity records. There were no significant differences of age, gender, height, educational, family economic level, smoking and drinking between different groups. The proportion of flour intake was higher in obese group compared to normal weight and overweight groups, and that of vegetables is lower in obese group. The physical activity (PAL) was not significantly different between two groups of the normal, overweight and obese groups. After the adjustment for confounding factors using logistic regression model, we found that the proportion of flour intake was positively associated with obesity, while the proportion of vegetable intake was inversely associated with obesity. It is concluded that dietary patterns were associated with obesity and diets composed of more vegetables and less staple combined with physical activities could contribute to obesity prevention.

Multi-factor Evolution for Large-scale Multi-objective Cloud Task Scheduling

Tianhao Zhao,Linjie Wu,Di Wu,Jianwei Li,Zhihua Cui 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.4

Scheduling user-submitted cloud tasks to the appropriate virtual machine (VM) in cloud computing is critical for cloud providers. However, as the demand for cloud resources from user tasks continues to grow, current evolutionary algorithms (EAs) cannot satisfy the optimal solution of large-scale cloud task scheduling problems. In this paper, we first construct a large-scale multi-objective cloud task problem considering the time and cost functions. Second, a multi-objective optimization algorithm based on multi-factor optimization (MFO) is proposed to solve the established problem. This algorithm solves by decomposing the large-scale optimization problem into multiple optimization subproblems. This reduces the computational burden of the algorithm. Later, the introduction of the MFO strategy provides the algorithm with a parallel evolutionary paradigm for multiple subpopulations of implicit knowledge transfer. Finally, simulation experiments and comparisons are performed on a large-scale task scheduling test set on the CloudSim platform. Experimental results show that our algorithm can obtain the best scheduling solution while maintaining good results of the objective function compared with other optimization algorithms.

Comparison of lifetime-based methods for 2D phosphor thermometry in high-temperature environment

Peng, Di,Liu, Yingzheng,Zhao, Xiaofeng,Kim, Kyung Chun IOP Pub 2016 Measurement science & technology Vol.27 No.9

<P>This paper discusses the currently available techniques for 2D phosphor thermometry, and compares the performance of two lifetime-based methods: high-speed imaging and the dual-gate. High-speed imaging resolves luminescent decay with a fast frame rate, and has become a popular method for phosphor thermometry in recent years. But it has disadvantages such as high equipment cost and long data processing time, and it would fail at sufficiently high temperature due to a low signal-to-noise ratio and short lifetime. The dual-gate method only requires two images on the decay curve and therefore greatly reduces cost in hardware and processing time. A dual-gate method for phosphor thermometry has been developed and compared with the high-speed imaging method through both calibration and a jet impingement experiment. Measurement uncertainty has been evaluated for a temperature range of 473–833 K. The effects of several key factors on uncertainty have been discussed, including the luminescent signal level, the decay lifetime and temperature sensitivity. The results show that both methods are valid for 2D temperature sensing within the given range. The high-speed imaging method shows less uncertainty at low temperatures where the signal level and the lifetime are both sufficient, but its performance is degraded at higher temperatures due to a rapidly reduced signal and lifetime. For <I>T</I>  >  750 K, the dual-gate method outperforms the high-speed imaging method thanks to its superiority in signal-to-noise ratio and temperature sensitivity. The dual-gate method has great potential for applications in high-temperature environments where the high-speed imaging method is not applicable.</P>