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| 1 | Modeling of fluid-induced vibrations and identification of hydrodynamic forces on flow control valves显示文摘Dynamics and vibration of control valves under flow-induced vibration are analyzed. Hydrodynamic load characteristics and structural response under flow-induced vibration are mainly influenced by inertia, damping, elastic, geometric characteristics and hydraulic parameters. The purpose of this work is to investigate the dynamic behavior of control valves in the response to self-excited fluid flow. An analytical and numerical method is developed to simulate the dynamic and vibrational behavior of sliding dam valves, in response to flow excitation. In order to demonstrate the effectiveness of proposed model, the simulation results are validated with experimental ones. Finally, to achieve the optimal valve geometry, numerical results for various shapes of valves are compared. Rounded valve with the least amount of flow turbulence obtains lower fluctuations and vibration amplitude compared with the flat and steep valves. Simulation results demonstrate that with the optimal design requirements of valves, vibration amplitude can be reduced by an average to 30%. | Samad Mehrzad Ilgar Javanshir Ahmad Rahbar Ranji Seyyed Hadi Taheri | 2015 | Journal of Central South University2015，22，7： | 3 |
| 2 | Subcutaneous sarcoidosis of the upper and lower extremities: A case report and review of the literature显示文摘BACKGROUND Sarcoidosis is a granulomatous disease of unknown etiology that most often impacts the lungs.Cutaneous manifestations of sarcoidosis are seen among 9%- 37% of patients.Subcutaneous sarcoidosis is a rare presentation of cutaneous sarcoidosis with estimates of frequency ranging from 1.4%-16%.To date,very few articles and case reports have been written about this subject.In this paper,we describe a case of subcutaneous sarcoidosis and perform a review of the literature to determine if there are commonalities among patients who present with subcutaneous sarcoidosis.CASE SUMMARY A 38-year-old female,with a past medical history of arthritis and recurrent nephrolithiasis,presents with an 8-mo history of 4 firm,asymptomatic,skincolored nodules on her left and right upper extremities and neck.Needle biopsy and post-excisional pathology report both revealed well-formed,dense,noncaseating granulomas localized to the subcutaneous tissue.Chest computed tomography revealed mild mediastinal lymphadenopathy.A diagnosis of subcutaneous sarcoidosis was made,and the lesions were surgically removed.CONCLUSION Commonalities among patients presenting with subcutaneous sarcoidosis include: middle-aged female,lesions localizing to the upper or lower limbs,lymphadenopathy or pulmonary infiltration on chest imaging,elevated serum angiotensin-converting enzyme. | Raman Mehrzad Julia Festa Reena Bhatt | 2019 | World Journal of Clinical Cases2019，7，17： | 3 |
| 3 | Gangrenous cholecystitis: A silent but potential fatal disease in patients with diabetic neuropathy. A case report显示文摘Gangrenous cholecystitis(GC) is a severe and potentially deadly complication of acute cholecystitis. We present a 83-year-old gentleman with a past medical history of type 2 diabetes mellitus with significant associated neuropathy, presenting to a community hospital in a major metropolitan area with 10 days nausea and vomiting and a benign abdominal exam. While the patient was admitted for hyperglycemia, he was subsequently found to have severe GC requiring urgent surgical intervention. | Melorin Mehrzad Charles C Jehle Lauren O Roussel Raman Mehrzad | 2018 | World Journal of Clinical Cases2018，6，15： | 3 |
| 4 | CT colonography for synchronous colorectal lesions in patients with colorectal cancer: initial experience显示文摘 | D. R. McArthur H. Mehrzad R. Patel J. Dadds A. Pallan S. S. Karandikar S. Roy-Choudhury | 2010 | European Radiology2010，，3： | 2 |
| 5 | Numerical simulation of secondary clarifier with activated sludge and suction lift removal system: modified Casson model and sludge withdrawing sensitivity analysis 显示文摘 | Muhammad Reza Saffarian Mohammad Hossein Hamedi Mehrzad Shams | 2010 | Korean Journal of Chemical Engineering2010，27，4： | 1 |
| 6 | Correlation of serum lipoprotein ratios with insulin resistance in infertile women with polycystic ovarian syndrome:a case control study显示文摘 | Ghaffarzad A Amani R Mehrzad Sadaghiani M | 2016 | Int J Fertil Steril2016，10，1： | 1 |
| 7 | Viability of milk neutrophils and severity of bovine coliform mastitis显示文摘 | Mehrzad J Duehateau L Burvenieh C | 2004 | J Dairy Sci2004，87，12： | 1 |
| 8 | Fracture toughness of epoxy polymer modified with nanosilica particles: Particle size effect显示文摘 | Milad Zamanian Mehrzad Mortezaei Babak Salehnia J.E. Jam | 2013 | Engineering Fracture Mechanics2013，，： | 1 |
| 9 | T lymphocyte proliferative capacity and CD4+/CD8+ ratio in primiparous and pluriparous lac- tating cows 显示文摘 | Mehrzad J Zhao X | 2008 | J Dairy Res2008，75，4： | 1 |
| 10 | The role of interven- tional radiology in the management of deep vein thrombosis 显示文摘 | Mehrzad H Freedman J Harvey JJ | 2013 | Postgrad Med J2013，89，1049： | 1 |
| 11 | Nuerical simulation and optimization of fluid flow in cyclone vortex finder显示文摘 | ARMAN Raoufi MEHRZAD Shams MEISAM Farzaneh | 2007 | Chemical Engineering and Processing2007，47，： | 1 |
| 12 | Defense of the bovine mammary gland by polymorphonuclear neutrophil leukocytes 显示文摘 | Paape M Mehrzad J Zhaom X | 2002 | J Mammary Gland Biol Neoplasia2002，7，2： | 1 |
| 13 | Forearm Bier Block显示文摘 | Arslanian B Kim D C Mehrzad R | 2014 | Annals of Plastic Surgery2014，，： | 1 |
| 14 | A new classification system for retrosternal goitre based on a systemic review of its complications and management 显示文摘 | Huins CT Georgalas C Mehrzad H | 2008 | Int J Surg2008，6，： | 1 |
| 15 | A numerical investigation of two-phase flow around a 2 - D turbine' s rotor tip显示文摘 | BEHNAM N MEHRZAD S MASOUD Z | 2009 | International Communications in Heat and Mass Transfer2009，36，6： | 1 |
| 16 | A new classification system for retrosternal goitre based on a systematic review of its complications and management 显示文摘 | Huins CT Georgalas C Mehrzad H | 2008 | Int J Surg2008，6，1： | 1 |
| 17 | Numerical simulation and optimization of fluid flow in cyclone vortex finder 显示文摘 | Arman Raoufi Mehrzad Shams Meisam Farzaneh | 2008 | Chemical Engineering Processing2008，47，： | 1 |
| 18 | Defence of the mammary gland by polymorphynuclear neutrophil leukocytes 显示文摘 | PAAPE R M MEHRZAD J ZHAO X | 2002 | Mamm Bio Neoplasia2002，7，2： | 1 |
| 19 | Numerical simulation and optimization of fluid flow in cyclone vortex finder显示文摘 | Arman Raoufi Mehrzad Shams Meisam Farzaneh Reza Ebrahimi | 2007 | Chemical Engineering & Processing: Process Intensification2007，，1： | 1 |
| 20 | Energy consumption and economic activities in Iran 显示文摘 | Mehrzad Zamani | 2007 | Energy Economics2007，29，6： | 1 |
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