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| 1 | Milligan-Morgan hemorrhoidectomy with anal cushion suspension and partial internal sphincter resection for circumferential mixed hemorrhoids显示文摘AIM:To identify a more effective treatment protocol for circumferential mixed hemorrhoids.METHODS:A total of 192 patients with circumferential mixed hemorrhoids were randomized into the treatment group,where they underwent Milligan-Morgan hemorrhoidectomy with anal cushion suspension and partial internal sphincter resection,or the control group,where traditional external dissection and internal ligation were performed.Postoperative recovery and complications were monitored.RESULTS:The time to wound healing was 12.96 ± 2.25 d in the treatment group shorter than 19.58 ± 2.71 d in the control group.Slight pain rate was 58.3% in the treatment group higher than 22.9% in the control group;moderate pain rate was 33.3% in the treatment group lower than 56.3% in the control group severe pain rate was 8.4% in the treatment group lower than 20.8% in the control group.No edema rate was 70.8% in the treatment group higher than 43.8% in the control group;mild local edema rate was 26% in the treatment group lower than 39.6% in the control group obvious local edema was 3.03% in the treatment group lower than 16.7% in the control group.No stenosis rate was 85.4% in the treatment group higher than 63.5% in the control group;moderate stenosis rate was 14.6% in the treatment group Lower than 27.1% in the control group severe anal stenosis rate was 0% in the treatment group lower than 9.4% in the control group.CONCLUSION:Milligan-Morgan hemorrhoidectomy with anal cushion suspension and partial internal sphincter resection is the optimal treatment for circumferential mixed hemorrhoids and can be widely applied in clinical settings. | Ming Lu Guang-Ying Shi Guo-Qiang Wang Yan Wu Yang Liu Hao Wen | 2013 | World Journal of Gastroenterology2013，19，30： | 44 |
| 2 | ELASTICITY EFFECTS ON THE WATER IMPACT OF AN ELASTIC FLAT-BOTTOM BOX显示文摘To elucidate the effects of elasticity the hydrodynamic impact of a 2-D flat-bottom shell box onto a water surface was investigated in detail using the finite element code Dytran. An ALE coupling algorithm was employed to handle the interactions between the box and the fluids. In this study, both air and water were treated as compressible fluids and their properities were modeled through the equation of states. Calculated results show that the air cushion plays a very important role buffering the impinging. Under the deformed concave bottom an air cushion layer will be easier to form up. For high impact speed, the pressure for the elastic box is much lower than that for the rigid box. Excited by the impact, the impinging box oscillates with about its natural frequency. | Li, Wan-Ping Liu, Gui-Rong Chan, Eng-Song | 2002 | Journal of Hydrodynamics2002，14，2： | 12 |
| 3 | Study on Mechanical Parameters of Rocks and Regional Layer-Slip Systems in Hunan-Jiangxi Areas显示文摘In order to quantitatively study layerslip-dipslip, nappe-glide structure systems in the Hunan-Jiangxiareas, samples with divided layers of these classical cross sections in the studied area were selected, and various physicomechanical parameters were systematically determined. Furthermore, five regional layer-slip systems of the basement and the cover strata were scientifically divided in the Middle Yangzi area, and they have been synthetically compared with the determined parameters in the Lower Yangzi area. Overall, the parameter value of a sliplayer presenting relative plasticity, ductility and viscosity is higher than a non-slip layer presenting relative elasticity, brittleness and rigidity, except the value of the Poission’s ratio of the rock and the determined temperature of the inclusion, other parameters (such as the uniaxial pressure strength of the rock, the elastic module, the density and the elastic wave velocity) are all lower. On the basis of the study, the authors still further explain | 孙岩 施泽进 勾佛仪 | 1993 | Science China Chemistry1993，36，8： | 4 |
| 4 | Anal cushion lifting method is a novel radical management strategy for hemorrhoids that does not involve excision or cause postoperative anal complications显示文摘AIM: To describe the anal cushion lifting(ACL) method with preliminary clinical results. METHODS: Between January to September 2007, 127 patients who received ACL method for hemorrhoid was investigated with informed consent. In this study, three surgeons who specialized in anorectal surgery performed the procedures. Patients with grade two or more severe hemorrhoids according to Goligher's classification were considered to be indicated for surgery. The patients were given the choice to undergo either the ACL method or theligation and excision method. ACL method is an original technique for managing hemorrhoids without excision. After dissecting the anal cushion from the internal sphincter muscle, the anal cushion was lifted to oral side and ligated at the proper position. Clinical characteristics and outcomes of patients were recorded including complications after surgery. RESULTS: A total of 127 patients were enrolled. Their median age was 42(19-84) years, and 74.8% were female. In addition, more than 99% of the patients had grade 3 or worse hemorrhoids. The median followup period was 26(0-88) mo, and the median operative time was 15(4-30) min. After surgery, analgesics were used for a median period of three days(0-21). Pain control was achieved using extra-oral analgesic drugs, although some patients required intravenous injections of analgesic drugs. The median duration of the patients' postoperative hospital stay was 7(2-13) d. A total of 10 complications(7.9%) occurred. Bleeding was observed in one patient and was successfully controlled with manual compression. Urinary retention occurred in 6 patients, but it disappeared spontaneously in all cases. Recurrent hemorrhoids developed in 3 patients after 36, 47, and 61 mo, respectively. No anal stenosis or persistent anal pain occurred. CONCLUSION: We consider that the ACL method might be better than all other current methods for managing hemorrhoids. | Gentaro Ishiyama Toshihiko Nishidate Yuji Ishiyama Akihiko Nishio Ken Tarumi Maiko Kawamura Kenji Okita Toru Mizuguchi Mineko Fujimiya Koichi Hirata | 2015 | World Journal of Gastrointestinal Surgery2015，7，10： | 3 |
| 5 | Treatment design of geological defects in dam foundation of Jinping I hydropower station显示文摘Jinping I hydropower station is one of the most challenging projects in China due to its highest arch dam and complex geological conditions for construction.After geological investigation into the dam foundation,a few large-scale weak discontinuities are observed.The rock masses in the left dam foundation are intensively unloaded,approximately to the depth of 150–300 m.These serious geological defects lead to a geological asymmetry on the left and right banks,and thus some major diffculties of dam construction are encountered.In this paper,the influences of geological defects on the project are analyzed,followed by the concepts and methods of treatment design.Based on the analysis,the treatment methods of the weak rock masses and discontinuities are carefully determined,including the concrete cushion,concrete replacement grids,and consolidation grouting.They work together to enhance the strength and integrity of the dam foundation.Evaluations and calibrations through geo-mechanical model tests in combination with feld monitoring results in early impoundment period show that the arch dam and its foundation are roughly stable,suggesting that the treatment designs are reasonable and effective.The proposed treatment methods and concepts in the context can be helpful for similar complex rock projects. | Shengwu Song Xuemin Feng Hongling Rao Hanhuai Zheng | 2013 | Journal of Rock Mechanics and Geotechnical Engineering2013，5，5： | 1 |
| 6 | Simplified analytical solution for stress concentration ratio of piled embankments incorporating pile–soil interaction显示文摘Piled embankments have been extensively used for high-speed rail over soft soils because of their effectiveness in minimizing differential settlement and shortening the construction period.Stress concentration ratio,defined as the ratio of vertical stress carried by pile heads(or pile caps if applicable)to that by adjacent soils,is a fundamental parameter in the design of piled embankments.In view of the complicated load transfer mechanism in the framework of embankment system,this paper presents a simplified analytical solution for the stress concentration ratio of rigid pile-supported embankments.In the derivation,the effects of cushion stiffness,pile–soil interaction,and pile penetration behavior are considered and examined.A modified linearly elastic-perfectly plastic model was used to analyze the mechanical response of a rigid pile–soil system.The analytical model was verified against field data and the results of numerical simulations from the literature.According to the proposed method,the skin friction distribution,pile–soil relative displacement,location of neural point,and differential settlement between the pile head(or cap)and adjacent soils can be determined.This work serves as a fast algorithm for initial and reasonable approximation of stress concentration ratio on the design aspects of piled embankments. | Qiang Luo Ming Wei Qingyuan Lu Tengfei Wang | 2021 | Railway Engineering Science2021，29，2： | 1 |
| 7 | Recruitment of the high elevation cushion plant Arenaria polytrichoides is limited by competition,thus threatened by currently established vegetation显示文摘Cushion plants have been confirmed to be keystone species of alpine ecosystems. However, the adaptive strategies responsible for their recruitment and persistence remain largely unclear. Also, the effect of competition by species already established in surrounding vegetation is not known. We first assessed population size and the frequency distribution of individuals of different size in communities of the keystone cushion Arenaria polytrichoides Edgew. along an elevational gradient in southwestern China. Furthermore, in controlled experiments the effects of soil quality, light availability, and competition by other species on seedling recruitment and survival was tested. At lower elevation individuals were larger (elder), but population size (density) was lower compared to higher elevation;similarly, adults and old individuals were relatively more frequent at low elevation, whereas juvenile and small individuals were more frequent at higher elevations. Seedling recruitment differed depending on soil origin with seeds sown in soils from low elevation having a higher germination percentage and seedling survival when grown without competition. Competition by other species delayed germination but did not influence the final germination percentage, but it increased seedling mortality and reduced their survival. Full light accelerated the germination process, but did not affect final germination percentage and seedling mortality. Results suggest that the recruitment and persistence of A. polytrichoides is strongly affected by competition, whereas temperature and soil quality are less important. We speculate that when populations of cushion A. polytrichoides are likely to be exposed to higher competition due to environmental changes, this species is in danger of being weeded out. | Jian-Guo Chen Yang Yang Song-Wei Wang Jurg Stocklin De-Li Peng Hang Sun | 2020 | Journal of Systematics and Evolution2020，58，1： | 1 |
| 8 | Pile-soil stress ratio in bidirectionally reinforced composite ground by considering soil arching effect显示文摘To discuss the soil arching effect on the load transferring model and sharing ratios by the piles and inter-pile subsoil in the bidirectionally reinforced composite ground, the forming mechanism, mechanical behavior and its effect factors were discussed in detail. Then, the unified strength theory was introduced to set up the elastoplastic equilibrium differential equation of the subsoil under the limit equilibrium state. And from the equation, the solutions were derived with the corresponding formulas presented to calculate the earth pressure over and beneath the horizontal reinforced cushion or pillow, the stress of inter-pile subsoil and the pile-soil stress ratio. Based on the obtained solutions and measured data from an engineering project, the influence rules by the soil property parameters (i.e., the cohesion c and internal friction angle φ) and pile spacing on the pile-soil stress ratio n were discussed respectively. The results show that to improve the load sharing ratio by the piles, the more effective means for filling materials with a larger value of φ is to increase the ratio of pile cap size to spacing, while to reduce the pile spacing properly and increase the value of cohesion c is advisable for those filling materials with a smaller value of φ. | 邹新军 杨眉 赵明华 杨小礼 | 2008 | Journal of Central South University2008，15，S2： | 1 |
| 9 | Residual settlement calculation of geocell cushion over gravel piles显示文摘The calculation of residual settlement of bidirectional reinforced composite foundation, which is composed of geocell cushion over gravel piles, was studied. The geocell cushion was modeled as a thin flexible plate with large deflection. Based on the Kirchhoff hypothesis, the governing differential equations and boundary conditions of the deformation of geocell cushion under working load were founded using von Karman method and solved by Galerkin method. On theses bases, the gravel piles and inter-pile soils were assumed as Winkler ground with variable spring stiffness so as to execute the approximate calculation of the residual settlement of the bidirectional reinforced composite foundation. The calculation method was verified by two laboratory experiments concerning settlement of embankments. One experiment was with just geocell cushion installed to treat the soft clay under embankments; another one was with both geocell cushion and gravel piles installed. The results show that the calculated settlement curve and the maximum settlement are closed to the observed ones. | 陈昌富 杨宇 肖淑君 周志军 | 2008 | Journal of Central South University2008，15，S2： | 1 |
| 10 | 陆地气垫车辆的探讨显示文摘通过对气垫技术发展历史的简要回顾及实例,说明气垫技术的重要性。依据气垫汽车的高通性,提出气垫汽车的优越性及在我国的应用前景,并通过对举升、牵引、悬挂、转向和行驶方向稳定性的计算分析,对气垫汽车作了性能上的描述,印证研制气垫汽车的技术可能性。 | 朱德锦 | 1994 | 上海公路1994，0，1： | 1 |
| 11 | Design of Car Battery Protection Device Based on Torsion Spring显示文摘In recent years, electric vehicles are developing rapidly in automotive industry. When involved in accidents, if the batteries of electric cars break, it is likely to cause a short circuit and start a fire. Aimed at this issue, a car battery protection device based on torsion spring has been designed. The car battery protection device can deform in a particular pattern in a collision accident. Impact energy of the accident is absorbed by the deformation, which can significantly reduce impact force on the batteries. Meanwhile, based on the principle of maximum energy absorption, some crucial parameters of the device can be determined. Furthermore, an impact simulation conducted on ANSYS software shows that maximum safety factors can be obtained when the material of car battery protection device is carbon steel. The analysis of 'safe space' in the car battery protection device shows that the device can prevent battery damage effectively in general circumstances, which means the reliability of the device has been verified. Therefore, when applied to electric vehicles, the car battery protection device,which can prevent secondary accidents, significantly improves the vehicle security in accidents. | 张东明 张晓云 杨智淳 俞骏威 | 2017 | Journal of Shanghai Jiaotong university(Science)2017，22，5： | 0 |
| 12 | NUMERICAL SIMULATION OF THE VERTICAL IMPACT OF A SUPERSONIC FLAT-HEAD BODY ON A WATER SURFACE显示文摘By using PIC method ,the vertical impact on the water surface for a 2-D su-personic flat-head body with a detached shock wave is studied in this paper.Numerical resultsshow that various complicated flow phenomena such as the supersonic flow around the body,theair cushion effect,the propagation of the shock wave in water,the initial formation of the wa-ter-entry cavity and the pile-up of the water surface are simulated successfully. | Li Sen-hu He You-sheng Lu Chuan-jing Shanghai Jiao Tong University,Shanghai 200030,P.R.China | 1993 | Journal of Hydrodynamics1993，5，3： | 0 |
| 13 | Application of Spacer Fabric for Protecting Cushion显示文摘Spacer fabric is a typical three-dimensional fabric,including upper layer,lower layer,and spacer layer.It is widely applied in protecting cushion products for unique space structure,which attributes good comfortability to infants and the disabled elderly in reducing diseases resulting from hot and humidity under long-time sitting and lying period.It necessitates studying the microenvironment change between body and clothes and corresponding performance.Compressibility,air permeability,heat and moisture permeability, and bending and humiture in microenvironment of spacer fabric are analyzed and compared with foam cushion and nonwoven cushion.Experimental results show that corresponding performance of spacer fabric is better in protecting cushion than those of foam and nonwoven.Compared with traditional foam cushion and non-woven cushion,spacer fabric is more suitable for protecting cushion,and provides an alternative and optimal cushion material in medical products to protect infants and the disabled elderly from bedsores resulted from long-time sitting and lying. | 刘鹏飞 杜赵群 | 2014 | Journal of Donghua University(English Edition)2014，31，5： | 0 |
| 14 | 数字录音的电平控制显示文摘解释了数字设备的过载显示器、数字电平表的基本原理,并解释数字录音与响度的关系。同时还介绍了涉及数字声音后期制作工作中电平校准方法,特别是数字与模拟设备混合系统的校准方法。 | 缪暑金 | 2007 | 现代电视技术2007，，2： | 0 |
| 15 | Confirmation of the Ball-Screw Force for the Differential Cushion System of Space Docking Mechanism显示文摘Based on the analysis of the differential cushion damping system kinematic relation and using principle of virtual work, a new kinematic function expression is established which is between six ball-screws and cushion components. At last the relationship between ball-screw force and attitude is intreduced. | 赵阳 曹喜滨 邵成勋 赵会光 | 1998 | Journal of Harbin Institute of Technology(New Series)1998，5，4： | 0 |
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