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      • KCI등재

        The Rehabilitation-Related Effects on the Fear, Pain, and Disability of Patients With Lumbar Fusion Surgery: A Systematic Review and Meta-Analysis

        Haiyan Cheng,Jing Liu,Lin Shi,Xiuxiu Hei 대한척추신경외과학회 2023 Neurospine Vol.20 No.1

        Objective: The lumbar fusion is an important surgery for the orthopedic diseases. The rehabilitation might improve the outcome of patients with lumbar fusion surgery. The rehabilitation-related effects can be revealed by a systemic review and meta-analysis of randomized clinical trials (RCTs). The purpose of this study is to clarify the rehabilitation effects in the patients with lumbar fusion surgery. Methods: We performed a systematic search and a meta-analysis for the RCT of rehabilitation treatment on the patients with lumbar fusion surgery. The comparison between rehabilitation treatment (including psychological rehabilitation, exercise, and multimodal rehabilitation) and typical treatment was performed to find if the rehabilitation treatment can improve the outcome after the lumbar fusion surgery. Fifteen studies of lumbar fusion patients under rehabilitation treatment and typical treatment were enrolled in a variety of rehabilitation modalities. The focused outcome was the rehabilitation-related effects on the fear, disability, and pain of patients after the lumbar fusion surgery. Results: Five hundred twenty-eight rehabilitation subjects and 498 controls were enrolled. The psychological-related rehabilitation showed a significant decrease in pain-related fear when compared to usual treatment. The multimodal rehabilitation can improve the disability outcome to a greater extent when compared to usual treatment. The multimodal rehabilitation seemed to have a more significantly positive effect to decrease disability after lumbar fusion surgery. In addition, the exercise and multimodal rehabilitation can relieve the pain after lumbar fusion surgery. The exercise rehabilitation seemed to have a more significantly positive effect to relieve pain after lumbar fusion surgery. Conclusion: The rehabilitation might relieve the pain-related fear, disability, and pain after lumbar fusion surgery.

      • KCI등재

        중국 해상법상 정기용선계약에 관한 고찰

        성해연(Haiyan Cheng),정영석(YeongSeok Cheong) 충남대학교 법학연구소 2013 法學硏究 Vol.24 No.2

        중국 해상법 제127조에서는 ‘선박소유자와 용선자 간의 권리ㆍ의무에 관한 규정은 오직 용선계약서 상에 약정되어 있지 않거나 다른 약정이 없는 경우에 한해 적용한다.’라고 규정되어 정기용선계약 및 기타의 항해용 선계약, 선체용선계약이 임의법규임을 분명히 하고 있다. 이렇듯 중국 해상법 제6장의 규정이 임의법규이고, 표준계약서식을 사용하여 계약을 체결하고, 표준계약서식에서는 대부분 영국법을 준거법으로 채택하고 있기 때문에 해운실무상으로는 중국 해상법이 적용될 여지가 거의 없어 보인다. 다만, 용선계약의 편제가 한국 상법과 다르다는 점에서 용선계약을 이해하는 중국 해상법의 입법태도가 우리나라나 영미법계와 다를 수도 있다고 생각된다. 또 중국과의 교역량이 절대적으로 증가하고 있는 우리나라로서는 향후 중국 해상법을 준거법으로 하거나 한중 항로에서 사용될 표준용 선계약서식 등의 개발 등에 대비하여 중국 해상법상의 용선계약에 대한 분석과 이해가 필요하다고 본다. 이에 본 논문에서는 정기용선계약에 관한 중국 해상법의 관련 규정의 내용을 분석하고, 특히 법적성질과 관련한 중국법학계의 해석론적 경향에 관하여 설명하고자 한다. 또한 정기용선계약상의 선박소유자·용선자의 권리와 의무에 관한 관련 규정 및 중국 해상법상의 개선방향에 관하여도 고찰하고자 한다. According to article 127of the China Maritime Law “The provisions concerning the rights and obligations of the ship owner and the charterer in this Chapter shall apply only when there are no stipulations or no different stipulations in this regard in the charter party”,illustrate Time Charter, Voyage Charter Party and Bareboat Charter Party are all part of random legal norm. The Chapter six of the China Maritime Law stipulate to use the standard contract forms during signing the contract of random legal norm and use the English Law as applicable law. Thus there is little opportunity to use China Maritime Law during the practice of ocean shipping. The formation of Chinese charter party is different from Korean Commercial Law. There are also some differences in the understanding of legislation attitude between China and Korean or Common Law system countries. In pace with the rapid increase of trading volum between China and Korea, the China Maritime Law would be used as applicable law or a standard Charter Party forms would be exploited specially for the Korea China’s sea route in the future. In conclusion, the writer consider it is inessencial to analyse and comprehend the China Maritime Law. This article analyses some relative contents about Time Charter Party in the China Maritime Law, especially the interpret trend of Chinese legal science in legal nature. The writer also inspected the stipulations concerning the rights and obligations of the shipowner and the charterer in Time Charter Party and proved the improved direction of the China Maritime Law.

      • Low-cycle Fatigue Performances of P/M Ti-Fe-Mo-Al-Nd Alloy

        Haiyan Liu,Huiping Tang,Cheng Li,Yuanping Huang,Boyun Huang,Yong Liu 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1

        The low-cycle fatigue performance and fracture of the P/M Ti-Fe-Mo-Al-Nd Alloys after sintering and forging have been studied. The linear regression equation of low-cycle fatigue lifetime has been obtained; the fatigue performances are objected under two different conditions. The fatigue fracture surface is analyzed by SEM. The low-cycle fatigue behavior of the P/M titanium alloy has been discussed.

      • KCI등재

        Synergistic enhancement of external electrical energy in PM filtration with Cu-HHTP@CuO nanowire arrays coated copper mesh

        Haiyan Li,Haimei Liu,Cheng Qian,Tao Wang,Sheng Wang 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-

        Developing multifunctional purification systems that combine air filtration and antibacterial functionalityis a challenging task. However, in designing air filtration materials, achieving a balance between filtrationefficiency and pressure drop remains a significant challenge. In this study, we developed anovel filtration material composed of hierarchically 3D Cu-HHTP nanowiskers coated CuO nanowires thatwere grown in-situ on a copper mesh. Benefitted from the intrinsically electrical conductivity of Cu-HHTP, we combined the composite material with external electrical energy for air filtration. By applyinglower electric potential directly (voltage of 5 V), the 3D conductive mesh filter exhibited excellent performancesin terms of the PM2.5 removal efficiency (99.7%), pressure drop (32 Pa at 2 cm s -1), andquality factor (0.187 at 2 cm s -1). Furthermore, after ten cycles of filtration and cleaning, the materialmaintained a high PM removal rate. In addition to its excellent filtration performance, the compositemetal mesh also exhibited outstanding antibacterial activity against both E. coli and S. aureus. Theelectro-mechanical stability and recyclability of the composite filter make it a cost-effective and environmentallyfriendly solution for air purification, with promising potential for improving air quality.

      • KCI등재

        Applications of Bacterial Cellulose-Based Composite Materials in Hard Tissue Regenerative Medicine

        Liu Yingyu,Liu Haiyan,Guo Susu,Qi Jin,Zhang Ran,Liu Xiaoming,Sun Lingxiang,Zong Mingrui,Cheng Huaiyi,Wu Xiuping,Shanxi Medical University School and Hospital of Stomatology 한국조직공학과 재생의학회 2023 조직공학과 재생의학 Vol.20 No.7

        BACKGROUND: Cartilage, bone, and teeth, as the three primary hard tissues in the human body, have a significant application value in maintaining physical and mental health. Since the development of bacterial cellulose-based composite materials with excellent biomechanical strength and good biocompatibility, bacterial cellulose-based composites have been widely studied in hard tissue regenerative medicine. This paper provides an overview of the advantages of bacterial cellulose-based for hard tissue regeneration and reviews the recent progress in the preparation and research of bacterial cellulose-based composites in maxillofacial cartilage, dentistry, and bone. METHOD: A systematic review was performed by searching the PubMed and Web of Science databases using selected keywords and Medical Subject Headings search terms. RESULTS: Ideal hard tissue regenerative medicine materials should be biocompatible, biodegradable, non-toxic, easy to use, and not burdensome to the human body; In addition, they should have good plasticity and processability and can be prepared into materials of different shapes; In addition, it should have good biological activity, promoting cell proliferation and regeneration. Bacterial cellulose materials have corresponding advantages and disadvantages due to their inherent properties. However, after being combined with other materials (natural/ synthetic materials) to form composite materials, they basically meet the requirements of hard tissue regenerative medicine materials. We believe that it is worth being widely promoted in clinical applications in the future. CONCLUSION: Bacterial cellulose-based composites hold great promise for clinical applications in hard tissue engineering. However, there are still several challenges that need to be addressed. Further research is needed to incorporate multiple disciplines and advance biological tissue engineering techniques. By enhancing the adhesion of materials to osteoblasts, providing cell stress stimulation through materials, and introducing controlled release systems into matrix materials, the practical application of bacterial cellulose-based composites in clinical settings will become more feasible in the near future.

      • Investigation of temperature sensitivity of actuation performance for piezoelectric fiber composites

        Lin, Xiujuan,Chen, Haiyan,Ma, Yupeng,Fisher, John G.,Huang, Shifeng,Zhang, Dou,Cheng, Xin Elsevier 2017 CERAMICS INTERNATIONAL Vol.43 No.13

        <P><B>Abstract</B></P> <P>Piezoelectric fiber composites (PFCs) suffer an extremely wide range of temperatures when used in various aerospace structures where temperature effects on the mechanical properties of PFCs are important. In this paper, the actuation performances of PFCs were studied when they were exposed to environmental temperatures from −15°C to 80°C. The results showed that the actuation performance of PFCs was greatly dependent on the environmental temperature. The free strain values and the calculated piezoelectric coefficients d<SUB>33</SUB> and d<SUB>31</SUB> were initially enhanced with the increase of temperature due to the restricted movement of epoxy molecule in the glassy state. The glass transition temperature range of the composite was broadened due to a large number of small pores on the surface of the Pb(Zr,Ti)O<SUB>3</SUB> (PZT) fibers, when the epoxy molecules inside the pores had different transition behaviors compared with those outside the pores. The actuation performance including free strain performance and actuation capability, as well as the piezoelectric coefficients d<SUB>33</SUB> and d<SUB>31</SUB> decreased as the temperature increased above room temperature, since the deformation of epoxy molecules in the viscoelastic state was irreversible.</P>

      • Anomalous Pseudocapacitive Behavior of a Nanostructured, Mixed-Valent Manganese Oxide Film for Electrical Energy Storage

        Song, Min-Kyu,Cheng, Shuang,Chen, Haiyan,Qin, Wentao,Nam, Kyung-Wan,Xu, Shucheng,Yang, Xiao-Qing,Bongiorno, Angelo,Lee, Jangsoo,Bai, Jianming,Tyson, Trevor A.,Cho, Jaephil,Liu, Meilin American Chemical Society 2012 Nano letters Vol.12 No.7

        <P>While pseudocapacitors represent a promising option for electrical energy storage, the performance of the existing ones must be dramatically enhanced to meet today’s ever-increasing demands for many emerging applications. Here we report a nanostructured, mixed-valent manganese oxide film that exhibits anomalously high specific capacitance (∼2530 F/g of manganese oxide, measured at 0.61 A/g in a two-electrode configuration with loading of active materials ∼0.16 mg/cm<SUP>2</SUP>) while maintaining excellent power density and cycling life. The dramatic performance enhancement is attributed to its unique mixed-valence state with porous nanoarchitecture, which may facilitate rapid mass transport and enhance surface double-layer capacitance, while promoting facile redox reactions associated with charge storage by both Mn and O sites, as suggested by in situ X-ray absorption spectroscopy (XAS) and density functional theory calculations. The new charge storage mechanisms (in addition to redox reactions of cations) may offer critical insights to rational design of a new-generation energy storage devices.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2012/nalefd.2012.12.issue-7/nl300984y/production/images/medium/nl-2012-00984y_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl300984y'>ACS Electronic Supporting Info</A></P>

      • KCI등재

        Dysfunction of Shh signaling activates autophagy to inhibit trophoblast motility in recurrent miscarriage

        Pan Yibin,Yan Lili,Chen Qiaoqiao,Wei Cheng,Dai Yongdong,Tong Xiaomei,Zhu Haiyan,Lu Meifei,Zhang Yanling,Jin Xiaoying,Zhang Tai,Lin Xiaona,Zhou Feng,Zhang Songying 생화학분자생물학회 2021 Experimental and molecular medicine Vol.53 No.-

        In early pregnancy, the placenta anchors the conceptus and supports embryonic development and survival. This study aimed to investigate the underlying functions of Shh signaling in recurrent miscarriage (RM), a serious disorder of pregnancy. In the present study, Shh and Gli2 were mainly observed in cytotrophoblasts (CTBs), Ptch was mainly observed in syncytiotrophoblasts (STBs), and Smo and Gli3 were expressed in both CTBs and STBs. Shh signaling was significantly impaired in human placenta tissue from recurrent miscarriage patients compared to that of gestational age-matched normal controls. VEGF-A and CD31 protein levels were also significantly decreased in recurrent miscarriage patients. Furthermore, inhibition of Shh signaling impaired the motility of JAR cells by regulating the expression of Gli2 and Gli3. Intriguingly, inhibition of Shh signaling also triggered autophagy and autolysosome accumulation. Additionally, knockdown of BECN1 reversed Gant61-induced motility inhibition. In conclusion, our results showed that dysfunction of Shh signaling activated autophagy to inhibit trophoblast motility, which suggests the Shh pathway and autophagy as potential targets for RM therapy.

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