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A giant Müllerian duct cyst in the perineum: a case report

Xianghu Meng, Jihong Liu, Xiao Yu, Shaogang Wang, Cong Liu, Zhangqun Ye

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 440-443 doi: 10.1007/s11684-012-0222-6

Abstract:

The authors present a case report of a giant Müllerian duct cyst in the perineum.Voiding cystourethrogram did not show any cyst interlinked to posterior urethra.Pathologic examination confirmed the presence of a Müllerian duct cyst.Huge Müllerian duct cyst is uncommon in clinic.Treatments of Müllerian duct cysts depend on their sizes and symptoms.

Keywords： Müllerian duct cyst     clinical symptoms     diagnosis    

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Bile duct injury repair — earlier is not better

Vinay K. Kapoor

Frontiers of Medicine 2015, Volume 9, Issue 4,   Pages 508-511 doi: 10.1007/s11684-015-0418-7

Abstract:

Bile duct injury is a common complication of cholecystectomy.The timing of bile duct injury repair remains controversial.Most patients with bile duct injury present with bile leak and sepsis; thus, early repair is not recommendedand endoscopic stenting are the mainstays of treatment of bile leak because they convert acute bile duct

Keywords： bile duct injury     cholecystectomy     laparoscopic cholecystectomy    

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Exergy-energy analysis of full repowering of a steam power plant

MEHRPANAHI,M. R. ALIGOODARZ

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 54-67 doi: 10.1007/s11708-014-0342-6

Abstract: The effect of a duct burner has then been investigated in each of the above six cases.This maximum efficiency occurs when utilizing two V94.3A gas turbines without duct burner in the steam

Keywords： full repowering     exergy analysis     V94.2 and V94.3A gas turbines     double-pressure HRSG     duct burner     Bandarabbas    

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Diagnosis and treatment of thyroglossal duct carcinoma: Report of three cases with review of literatures

GAO Yan, CHEN Yan, SUN Zhipeng, GUO Chuanbin, YU Guangyan, ZHAN Yi

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 58-62 doi: 10.1007/s11684-008-0011-4

Abstract: in the thyroglossal duct cyst.The constituent ratio of thyroglossal duct carcinoma among surgically excised thyroglossal duct lesionsTwo cases were diagnosed as thyroglossal duct cyst prior to the operation, the remaining one as dermoidcyst.to a clearly demonstrable thyroglossal duct cyst or tract; clinically or histologically confirmed absence
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Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones

Zongming Zhang, Zhuo Liu, Limin Liu, Mengmeng Song, Chong Zhang, Hongwei Yu, Baijiang Wan, Mingwen Zhu, Zixu Liu, Hai Deng, Haiming Yuan, Haiyan Yang, Wenping Wei, Yue Zhao

Frontiers of Medicine 2017, Volume 11, Issue 4,   Pages 576-589 doi: 10.1007/s11684-017-0536-5

Abstract: method, effect, and complications of minimally invasive treatment of intrahepatic and extrahepatic bile ductstones by combining our practical experience were summarized as follows. (1) For intrahepatic bile ductstones, the operation may be selected by laparoscopic liver resection, laparoscopic common bile ductLCBDE), or percutaneous transhepatic cholangioscopy. (2) For concomitant gallstones and common bile ductLCBDE, and T-tube drainage or primary suture. (3) For concomitant intrahepatic and extrahepatic bile duct

Keywords： laparoscopy     choledochoscopy     duodenoscopy     cholelithiasis     minimally invasive treatment    

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Diffuse cystic lung diseases

Jay H. Ryu, Xinlun Tian, Misbah Baqir, Kaifeng Xu

Frontiers of Medicine 2013, Volume 7, Issue 3,   Pages 316-327 doi: 10.1007/s11684-013-0269-z

Abstract: Cyst in the lung is defined as a round parenchymal lucency with a well-defined thin wall (<2 mm thickness

Keywords： cyst     lung disease     interstitial lung disease     lymphangioleiomyomatosis     Langerhans’ cell histiocytosis     Birt-Hogg-Dubé    

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Numerical calculation for the equivalent surface source of the thermal neutron duct of in-hospital neutron

Zhu Yangni,Jiang Xinbiao,Zhao Zhumin,Zhang Liang,Zhou Yongmao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 56-59

Abstract: text-align: justify;">Numerical calculation for the equivalent surface source of the thermal neutron ductNeutron beam parameters at the exit of thermal neutron duct are calculated.

Keywords： IHNI－1 reactor     thermal neutron duct     equivalent neutron surface source     equivalent γ surface source    

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Current Research Status of Heterodera glycines Resistance and Its Implication on Soybean Breeding Review

Guiping Yan,Richard Baidoo

Engineering 2018, Volume 4, Issue 4,   Pages 534-541 doi: 10.1016/j.eng.2018.07.009

Abstract: ., soybean cyst nematode, SCN) is the most damaging nematode pest affecting soybean crop worldwide.

Keywords： Soybean cyst nematode     Heterodera glycines     Resistance     Molecular breeding    

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Towards Cr(VI)-free anodization of aluminum alloys for aerospace adhesive bonding applications: A review

Abrahami, John M. M. de Kok, Herman Terryn, Johannes M. C. Mol

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 465-482 doi: 10.1007/s11705-017-1641-3

Abstract: For more than six decades, chromic acid anodizing (CAA) has been the central process in the surface pre-treatment of aluminum for adhesively bonded aircraft structures. Unfortunately, this electrolyte contains hexavalent chromium (Cr(VI)), a compound known for its toxicity and carcinogenic properties. To comply with the new strict international regulations, the Cr(VI)-era will soon have to come to an end. Anodizing aluminum in acid electrolytes produces a self-ordered porous oxide layer. Although different acids can be used to create this type of structure, the excellent adhesion and corrosion resistance that is currently achieved by the complete Cr(VI)-based process is not easily matched. This paper provides a critical overview and appraisal of proposed alternatives to CAA, including combinations of multiple anodizing steps, pre- and post anodizing treatments. The work is presented in terms of the modifications to the oxide properties, such as morphological features (e.g., pore size, barrier layer thickness) and surface chemistry, in order to evaluate the link between fundamental principles of adhesion and bond performance.

Keywords： aluminum     Cr(VI)-free     surface pre-treatments     anodizing     adhesive bonding    

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Scrutiny of non-linear differential equations Euler-Bernoulli beam with large rotational deviation by AGM

M. R. AKBARI,M. NIMAFAR,D. D. GANJI,M. M. AKBARZADE

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 402-408 doi: 10.1007/s11465-014-0316-8

Abstract:

The kinematic assumptions upon which the Euler-Bernoulli beam theory is founded allow it to be extended to more advanced analysis. Simple superposition allows for three-dimensional transverse loading. Using alternative constitutive equations can allow for viscoelastic or plastic beam deformation. Euler-Bernoulli beam theory can also be extended to the analysis of curved beams, beam buckling, composite beams and geometrically nonlinear beam deflection. In this study, solving the nonlinear differential equation governing the calculation of the large rotation deviation of the beam (or column) has been discussed. Previously to calculate the rotational deviation of the beam, the assumption is made that the angular deviation of the beam is small. By considering the small slope in the linearization of the governing differential equation, the solving is easy. The result of this simplification in some cases will lead to an excessive error. In this paper nonlinear differential equations governing on this system are solved analytically by Akbari-Ganji’s method (AGM). Moreover, in AGM by solving a set of algebraic equations, complicated nonlinear equations can easily be solved and without any mathematical operations such as integration solving. The solution of the problem can be obtained very simply and easily. Furthermore, to enhance the accuracy of the results, the Taylor expansion is not needed in most cases via AGM manner. Also, comparisons are made between AGM and numerical method (Runge-Kutta 4th). The results reveal that this method is very effective and simple, and can be applied for other nonlinear problems.

Keywords： AGM     critical load of columns     large deformations of beam     nonlinear differential equation    

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Enhancing power transfer capability through flexible AC transmission system devices: a review

Fadi M. ALBATSH,Saad MEKHILEF,Shameem AHMAD,H. MOKHLIS,M. A. HASSAN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 8,   Pages 658-678 doi: 10.1631/FITEE.1500019

Abstract: Global demand for power has significantly increased, but power generation and transmission capacities have not increased proportionally with this demand. As a result, power consumers suffer from various problems, such as voltage and frequency instability and power quality issues. To overcome these problems, the capacity for available power transfer of a transmission network should be enhanced. Researchers worldwide have addressed this issue by using flexible AC transmission system (FACTS) devices. We have conducted a comprehensive review of how FACTS controllers are used to enhance the available transfer capability (ATC) and power transfer capability (PTC) of power system networks. This review includes a discussion of the classification of different FACTS devices according to different factors. The popularity and applications of these devices are discussed together with relevant statistics. The operating principles of six major FACTS devices and their application in increasing ATC and PTC are also presented. Finally, we evaluate the performance of FACTS devices in ATC and PTC improvement with respect to different control algorithms.

Keywords： FACTS devices     Available transfer capability     Power transfer capability     Artificial intelligence    

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Combined heat and power plant integrated with mobilized thermal energy storage (M-TES) system

M, Erik DAHLQUIST

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 469-474 doi: 10.1007/s11708-010-0123-9

Abstract: The mobilized thermal energy storage (M-TES) system is an alternative source of heat for detached buildingsIn this paper, the integration of a combined heat and power (CHP) plant and an M-TES system is analyzedThe performance of the M-TES system is likewise discussed.

Keywords： Mobilized thermal energy system     district heating     thermal energy storage     combined heat and power     detached houses    

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The Deep Carbon Observatory: A Ten-Year Quest to Study Carbon in Earth

Craig M. Schiffries, Andrea Johnson Mangum, Jennifer L. Mays, Michelle Hoon-Starr, Robert M. Hazen

Engineering 2019, Volume 5, Issue 3,   Pages 372-378 doi: 10.1016/j.eng.2019.03.004

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ThMn12-Type Alloys for Permanent Magnets Review

Hadjipanayis, A.M. Gabay, A.M. Schönhöbel, A. Martín-Cid, J.M. Barandiaran, D. Niarchos

Engineering 2020, Volume 6, Issue 2,   Pages 140-146 doi: 10.1016/j.eng.2018.12.011

Abstract:

Iron-rich compounds with the tetragonal ThMn12-type structure have the potential to meet current demands for rare-earth-lean permanent magnets with high energy density and operating temperatures of 150–200 ℃. However, while it is normal for magnet technology to lag behind the development of underlying magnetic material, this gap has always been unusually large for ThMn12-type magnets. The gap has widened further in recent years, as excellent combinations of intrinsic magnetic properties have been obtained in compounds synthesized with a smaller amount of structure-stabilizing elements (e.g., SmFe11V or Sm0.8Zr0.2Fe9.2Co2.3Ti0.5) or with no such elements (i.e., SmFe9.6Co2.4 thin films). The search for promising compounds continues—with increasing help coming from theoretical calculations. Unfortunately, progress in the development of magnets beyond polymer-bonded interstitially modified powders remains marginal. The introduction of lanthanum (La) was found to stabilize low-meltingtemperature minority phases in Sm(Fe,Ti)12 alloys, thus allowing for liquid-phase sintering for the first time. The high reactivity of La, however, has apparently undermined the development of coercivity (Hc). A controlled crystallization of the initially suppressed ThMn12-type phase makes "bulk" magnetic hardening possible, not only in Sm-Fe-V alloys (in which it has been known since the 1990s), but also is in La-added (Ce,Sm)(Fe,Ti)12 alloys. The properties of the bulk-hardened alloys, however, remain unsatisfactory. Mechanochemically synthesized (Sm,Zr)(Fe,Si)12 and (Sm,Zr)(Fe,Co,Ti)12 powders may become suitable for sintering into powerful fully dense magnets, although not before a higher degree of anisotropy in both alloys and a higher Hc in the latter alloy have been developed.

Keywords： Permanent magnets     Rare earths permanent magnets     ThMn12 structure    

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Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators

Hamid M. SEDIGHI, Hassen M. OUAKAD

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1520-1530 doi: 10.1007/s11709-020-0672-x

Abstract: In this study, for the first time, we investigate the nonlocality superimposed to the size effects on the nonlinear dynamics of an electrically actuated single-walled carbon-nanotube-based resonator. We undertake two models to capture the nanostructure nonlocal size effects: the strain and the velocity gradient theories. We use a reduced-order model based on the differential quadrature method (DQM) to discretize the governing nonlinear equation of motion and acquire a discretized-parameter nonlinear model of the system. The structural nonlinear behavior of the system assuming both strain and velocity gradient theories is investigated using the discretized model. The results suggest that nonlocal and size effects should not be neglected because they improve the prediction of corresponding dynamic amplitudes and, most importantly, the critical resonant frequencies of such nanoresonators. Neglecting these effects may impose a considerable source of error, which can be amended using more accurate modeling techniques.

Keywords： velocity gradient elasticity theory     nanotube resonators     differential-quadrature method     nonlinear vibration    

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Title Author Date Type Operation

A giant Müllerian duct cyst in the perineum: a case report

Xianghu Meng, Jihong Liu, Xiao Yu, Shaogang Wang, Cong Liu, Zhangqun Ye

Journal Article

Bile duct injury repair — earlier is not better

Vinay K. Kapoor

Journal Article

Exergy-energy analysis of full repowering of a steam power plant

MEHRPANAHI,M. R. ALIGOODARZ

Journal Article

Diagnosis and treatment of thyroglossal duct carcinoma: Report of three cases with review of literatures

GAO Yan, CHEN Yan, SUN Zhipeng, GUO Chuanbin, YU Guangyan, ZHAN Yi

Journal Article

Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones

Zongming Zhang, Zhuo Liu, Limin Liu, Mengmeng Song, Chong Zhang, Hongwei Yu, Baijiang Wan, Mingwen Zhu, Zixu Liu, Hai Deng, Haiming Yuan, Haiyan Yang, Wenping Wei, Yue Zhao

Journal Article

Diffuse cystic lung diseases

Jay H. Ryu, Xinlun Tian, Misbah Baqir, Kaifeng Xu

Journal Article

Numerical calculation for the equivalent surface source of the thermal neutron duct of in-hospital neutron

Zhu Yangni,Jiang Xinbiao,Zhao Zhumin,Zhang Liang,Zhou Yongmao

Journal Article

Current Research Status of Heterodera glycines Resistance and Its Implication on Soybean Breeding

Guiping Yan,Richard Baidoo

Journal Article

Towards Cr(VI)-free anodization of aluminum alloys for aerospace adhesive bonding applications: A review

Abrahami, John M. M. de Kok, Herman Terryn, Johannes M. C. Mol

Journal Article

Scrutiny of non-linear differential equations Euler-Bernoulli beam with large rotational deviation by AGM

M. R. AKBARI,M. NIMAFAR,D. D. GANJI,M. M. AKBARZADE

Journal Article

Enhancing power transfer capability through flexible AC transmission system devices: a review

Fadi M. ALBATSH,Saad MEKHILEF,Shameem AHMAD,H. MOKHLIS,M. A. HASSAN

Journal Article

Combined heat and power plant integrated with mobilized thermal energy storage (M-TES) system

M, Erik DAHLQUIST

Journal Article

The Deep Carbon Observatory: A Ten-Year Quest to Study Carbon in Earth

Craig M. Schiffries, Andrea Johnson Mangum, Jennifer L. Mays, Michelle Hoon-Starr, Robert M. Hazen

Journal Article

ThMn12-Type Alloys for Permanent Magnets

Hadjipanayis, A.M. Gabay, A.M. Schönhöbel, A. Martín-Cid, J.M. Barandiaran, D. Niarchos

Journal Article

Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators

Hamid M. SEDIGHI, Hassen M. OUAKAD

Journal Article