فیلترها/جستجو در نتایج    

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متن کامل


نویسنده: 

MOHAMMADZADEH R. M.A.

اطلاعات دوره: 
  • سال: 

    2005
  • دوره: 

    8
تعامل: 
  • بازدید: 

    202
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

ONE OF THE RARE BUT IMPORTANT COMPLICATIONS OF THIS OPERATION IS BLADDER EXPLOSION. WE HAVE HAD 3 CASES OF THIS COMPLICATION DURING IS YEARS (FROM 1987 TO 2002). THIS EVENT CAN BE COMPLETELY PREVENTED BY APPLICATION OF SOME TECHNICAL POINTS, SUCH AS: USE OF CONTINUOUS IRRIGATION SHIT, TYPE OF RESECTION AND KIND OF CAUTER AND POWER AND VOLTAGE AND OTHER THINGS THAT WILL BE ILLUSTRATED DURING PAPER PRESENTATION.

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بازدید 202

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نشریه: 

UROLOGY JOURNAL

اطلاعات دوره: 
  • سال: 

    2014
  • دوره: 

    11
  • شماره: 

    3
  • صفحات: 

    1692-1694
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    200
  • دانلود: 

    0
چکیده: 

INTRODUCTION: Intravesical EXPLOSION is an extremely rare event during TURP. (1) Though previously reported, all the cases were dealt by immediate laparotomy and BLADDER repair. (1) To our knowledge this is the first case where laparoscopy has been offered as a treatment option. . . .

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اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    19
  • شماره: 

    6
  • صفحات: 

    31-39
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    64
  • دانلود: 

    0
چکیده: 

Most of underground structures are designed and built to withstand the effects of precision penetrating weapons and heavy bombs in the soil. Usually the depth of the structures is high and there is no possibility of missiles to the main structure. Accordingly, the design of these structures is performed for blast loads. The EXPLOSION phenomenon is a type of high strain rate problem that requires dynamic analysis to solve. Also, due to the interaction between underground structures and soil, the analysis of these structures is affected by any type of nonlinear analysis. Thus, the analysis of underground structures in simulations affected by the EXPLOSION is a high strain rate problem that requires nonlinear dynamic analysis. There are two implicit and explicit solutions to dynamic analysis that, given the EXPLOSION problems, their analysis is explicitly integral. The loading of underground structures is often based on the relationships obtained from theoretical and experimental research. Currently, the most important reference for explosive loading in the field of underground structures is the US code (TM5-855-1) provided by the US army. The numerical simulation methods have recently been widely used as a novel method in the calculation of nonlinear dynamic loads. According to the researchers, among the explicit software available in AUTODYN software, due to its ability to solve very high strain rate problems, it yields good results from simulation and EXPLOSION problem analysis. On the other hand, the explosive loading of underground structures is often based on theoretical and empirical research. In this study, a numerical simulation method was used to analyze and simulate the effect of the surface EXPLOSION on the underground structure. Also, all the simulation steps were performed using AUTODYN hydrocode. In order to analyze the loading and response of underground structures, the effect of the explosive charge weight and the depth of burial of the structure has been studied and the numerical results have been compared with the relationships presented in reliable US scientific and guidance sources. Finally, suggestions are made to improve the loading of these structures. Also, considering the results of the load on the roof of the structure, it was observed that the values of the US code are conservative compared to the other two methods. Therefore, it is recommended not to apply 1. 5 incremental coeficient load to the structure in accordance with this instruction. The numerical simulation results including a comparison of maximum pressure and the velocity values with the values provided in the by code (TM5-855-1) showed that the predicted values for the maximum pressure values larger than of instructions America's Army. The reason for this is that the code assumes that the investigations take place in the full EXPLOSION range (mating coefficient f = 1), while in the numerical model under consideration, the EXPLOSION is formed at the joint surface of air and soil. Hence the coupling coefficient is equal to (f = 0. 4). In other words, the depth of the explosive charge is almost zero and there is little difference between the results.

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عنوان: 
نویسندگان: 

Mehrvarz Shaban | Mohebi Hassan Ali

نشریه: 

TRAUMA MONTHLY

اطلاعات دوره: 
  • سال: 

    2024
  • دوره: 

    29
  • شماره: 

    4
  • صفحات: 

    1150-1151
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    7
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

For this reason and in order to be registered in the medical sources of the world, we plan to register this new type of terrorism injury in the medical sources of the world under the title “pager EXPLOSION trauma" or “pager trauma”. We invite all our colleagues in all countries and especially in Lebanon to publish their articles about the characters of this injury.Based on field observations and expert opinions, it seems that these injuries will cause lifelong disability, and this is a terrible tragedy that needs international response, and these injured patient need urgent specialized treatment at this stage and should be treated in the future.Publishing of experiences and treatments modalities about this injury will help physicians to give better medical services.

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اطلاعات دوره: 
  • سال: 

    1385
  • دوره: 

    49
  • شماره: 

    93
  • صفحات: 

    325-327
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1040
  • دانلود: 

    164
کلیدواژه: 
چکیده: 

یکی از عوارض نادر ولی ثابت شده در هنگام حذف پروستات و یا تومور مثانه از طریق مجرا (TUR)، انفجار در داخل مثانه است. همچنین انفجار در داخل کلیه و حالب در هنگام سوزاندن تومور داخل آن گزارش شده است )در سال (1991.در این جا در طی 15 سال به 3 مورد از این عارضه برخورد نموده که در هر سه مورد پارگی مثانه در قسمت داخل پریتوئن اتفاق افتاد و جهت درمان آن مجبور به باز کردن شکم و ترمیم آن شدیم.

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نویسندگان: 

MOHAMMADZADEH REZAEI M.A.

نشریه: 

UROLOGY JOURNAL

اطلاعات دوره: 
  • سال: 

    2006
  • دوره: 

    3
  • شماره: 

    2
  • صفحات: 

    109-110
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    296
  • دانلود: 

    0
چکیده: 

Transurethral resection of prostate (TURP) and BLADDER tumors is one of the most common surgeries in urology. This approach is frequently being performed in most medical centers in Iran. Several intra-operative and postoperative complications of these surgeries have been reported in literature; but, one of the most uncommon complications of this technique is intravesical EXPLOSION during the surgery. Few cases of this complication have been reported.(1-3) We report 3 cases of intravesical EXPLOSION during TURP in patients with benign prostatic hyperplasia (BPH) and discuss its mechanism and the possible preventive measures.  sensed in the suprapubic area. In 2 patients, the EXPLOSION was not accompanied by any significant complications, but in 1, the BLADDER was ruptured in the dome region. After the EXPLOSION, the returned amount of washing liquid decreased. On cystoscopy, a rupture was noted in the BLADDER dome, from which the intestinal loops were seen. The patient was secured in a position suitable for achieving a median suprapubic incision. On laparotomy, we noticed a 3- to 4-cm rupture in the BLADDER dome. The remained liquid was immediately evacuated and the rupture was repaired in 2 layers. A urethral catheter was inserted, and after 1 week, the patient was discharged without any complications.    

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اطلاعات دوره: 
  • سال: 

    1389
  • دوره: 

    14
  • شماره: 

    4(پیاپی 57)
  • صفحات: 

    50-56
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    1459
  • دانلود: 

    410
چکیده: 

زمینه: خطر حریق و انفجار به ترتیب اولین و دومین خطر اصلی در صنایع شیمیایی محسوب می شوند.هدف: مطالعه به منظور ارزیابی کمی و رتبه بندی نسبی خطر حریق و انفجار در یک صنعت پتروشیمی انجام شد.مواد و روش ها: این مطالعه مقطعی در سال 1385 در کارخانه پتروشیمی بندر امام خمینی (ره) انجام شد. واحدهای فرآیندی مورد نظر بر اساس شاخص های تاثیرگذار بر خطر حریق و انفجار انتخاب و با استفاده از روش شاخص حریق و انفجار DOW (F&EI) تحلیل شدند. اطلاعات فنی مورد نیاز برای محاسبه شاخص از اسناد فرآیندی، راهنمای شاخص و گزارش های موجود به دست آمد. سپس خطر نسبی حریق و انفجار با استفاده از شاخص محاسبه شده در هر یک از بخش ها رتبه بندی شد. یافته ها: واحد فرآیندی برج عریان ساز با شاخص خطر 226 و مخزن نفتای خام با شاخص خطر 64 به ترتیب به عنوان بحرانی ترین و کم-خطرترین واحد فرآیندی شناسایی شدند. شدت خطر حریق و انفجار با توجه به شاخص محاسبه شده در تمام برج ها شدید (F&EI>158)، در راکتور تبدیل کاتالیسی و کوره گازوئیل، سنگین (127<F&EI≤158) و در راکتور هیدرودی آلکیلاسیون و مخزن نفتا، متوسط (61<F&EI≤96) بود. برج عریان ساز با حداکثر شعاع 57 متر در حدود 10 درصد از مساحت کارخانة مورد مطالعه را در بر می گرفت.نتیجه گیری: شاخص حریق و انفجار یک روش مناسب برای تعیین نقاط پرخطر وکم خطر یک صنعت است. برج عریان ساز به عنوان بحرانی-ترین واحد از نظر حریق و انفجار به ارزیابی خطر توسط روش های دقیق تر نیازمند است.

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نویسندگان: 

AHMADI S. | ADL J. | MIRZAEI M. | ZAREI M.

اطلاعات دوره: 
  • سال: 

    2012
  • دوره: 

    15
  • شماره: 

    4 (61)
  • صفحات: 

    68-76
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    265
  • دانلود: 

    0
چکیده: 

Background: Fire and EXPLOSION accidents cause numerous economical, environmental and human losses in industries.Objective: The aim of this study was to present a new method for fire and EXPLOSION loss estimation by virtue of fire and EXPLOSION index to determine the premium rate.Methods: This is a descriptive-analytical study carried out in Bandar Imam petrochemical complex in 2006. Initially, the fire and EXPLOSION index was calculated in selected process units and the hazard radius, equipment value, and the base maximum probable property damage determined. To determine the actual maximum property damage, the loss control credit factor was assessed. Finally, the days’ outage and business interruption losses were estimated.Data analyzed with DOW fire and EXPLOSION software.Findings: The stripper column with 226 F&EI value, actual maximum property damage of about 6.7 million dollars, days’ outage of about 120 days, and business interruption loss of about 89 million dollars was identified as the most critical unit of the factory. The least hazardous unit detected was the Nafta storage tank with 64 F&EI value and actual maximum property damage of about 0.36 million dollars.Conclusion: All factors affecting the fire and EXPLOSION risk were shown to be among the indices that are considered as a base for loss estimation. Business interruption losses are higher than actual maximum property damage and these losses are not insured in Iran industries. In this technique, the effects of control measures on reducing fire and EXPLOSION losses were considered and the estimated losses could be regarded as a base to determine the premium rate.

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نویسندگان: 

VASHEGHANI FARAHANI JAMILEH

اطلاعات دوره: 
  • سال: 

    2014
  • دوره: 

    43
  • شماره: 

    10
  • صفحات: 

    1444-1450
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    355
  • دانلود: 

    0
چکیده: 

In all over the world, mining is considered as a high-risk activity that is pregnant with serious disasters not only for miners, engineers, and other people into it, but also for people who live near the mines. In this article, our main purpose is to examine some major mine disasters and safety in mines and the case study is a coal mine in Turkey. Safety in mines is one of the most important issues that need attention. Therefore, it is suggested that existing deficiencies in mines should be removed by continuous monitoring in all devices, equipments, control of Methane and safe separation of coal from a mine. Moreover, we recommend that early warning systems should be installed to alert some EXPLOSIONs, fires and other dangerous events to the fire departments, hospitals, Red Crescent and other major reliefs.Experiences from previous events in mines can help managers and miners. With some plans and projects related to disasters in mines and solution for them, some diseases such as black lung disease or other problems in mines such as carbon monoxide poisoning can forestall a danger. Before Mine owners begin their activity, they must research about the environmental and social effects of their activities. Therefore, they should identify some important hazards and determine some essential tasks to remove them or control risks via collaboration with other scientists.

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نویسندگان: 

LAWS R.

اطلاعات دوره: 
  • سال: 

    1996
  • دوره: 

    7
  • شماره: 

    2
  • صفحات: 

    48-64
تعامل: 
  • استنادات: 

    1
  • بازدید: 

    125
  • دانلود: 

    0
کلیدواژه: 
چکیده: 

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بازدید 125

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