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مرکز اطلاعات علمی SID1
مرکز اطلاعات علمی SID
اسکوپوس
مرکز اطلاعات علمی SID
ریسرچگیت
strs
نویسندگان: 

TWIGG M.V. | SPENCER M.S.

نشریه: 

TOPICS IN CATALYSIS

اطلاعات دوره: 
  • سال: 

    2003
  • دوره: 

    22
  • شماره: 

    -
  • صفحات: 

    191-191
تعامل: 
  • استنادات: 

    315
  • بازدید: 

    7074
  • دانلود: 

    9195
کلیدواژه: 
چکیده: 

آمار یکساله:  

بازدید 7074

دانلود 9195 استناد 315 مرجع 0
همایش: 

IRANIAN FUEL CELL SEMINAR

اطلاعات دوره: 
  • سال: 

    2012
  • دوره: 

    0
  • شماره: 

    5
تعامل: 
  • بازدید: 

    1155
  • دانلود: 

    0
چکیده: 

THE USE OF VARIOUS methanol CONCENTRATIONS, INCLUDING 1M, 2M, 3M AND 4M, IN A PASSIVE DIRECT methanol FUEL CELL (DMFC) WAS INVESTIGATED EXPERIMENTALLY. IT WAS SHOWN THAT PASSIVE DMFC PERFORMANCE REDUCED WITH LOW methanol CONCENTRATION (1M) BECAUSE OF LOWER methanol DIFFUSION. ALSO HIGH methanol CONCENTRATION (4M) COULD REDUCE CELL EFFICIENCY BECAUSE OF HIGH methanol CROSSOVER AND MIXED POTENTIAL. MAXIMUM CELL PERFORMANCE WAS ACHIEVED BY 3M methanol.

آمار یکساله:  

بازدید 1155

دانلود 0
اطلاعات دوره: 
  • سال: 

    2018
  • دوره: 

    5
  • شماره: 

    1
  • صفحات: 

    21-33
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    17767
  • دانلود: 

    9781
چکیده: 

A two-dimensional, single-phase, isothermal model has been developed for a direct methanol fuel cell (DMFC). The model considers the anode and cathode electrochemical equations, continuity, momentum and species transport in the entire fuel cell. Then, the equations are coupled together and solved simultaneously using a commercial, Finite element based, COMSOL Multiphysics software. The crossover of methanol is also investigated in the model. This model describes the electrochemical kinetics of methanol oxidation at the anode catalyst layer by nonTafel kinetics. The concentration distribution of methanol, water, and oxygen was predicted by the model. In addition, the changes of methanol crossover and fuel utilization with current density were evaluated for different methanol concentrations (0. 5 M, 1 M, 2 M, 4 M, and 6 M). Furthermore, it was also found that the crossover of methanol decreases at low methanol concentrations and high current densities. The results show that the polarization curve is in agreement with experimental data.

آمار یکساله:  

بازدید 17767

دانلود 9781 استناد 0 مرجع 0
گارگاه ها آموزشی
اطلاعات دوره: 
  • سال: 

    1389
  • دوره: 

    3
  • شماره: 

    4 (پیاپی 12)
  • صفحات: 

    19-26
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    100
  • دانلود: 

    49
چکیده: 

تاثیر غلظت محلول متانول و عمق کانال صفحات گرافیتی بر عملکرد تک سل پیل سوختی متانولی به صورت تجربی مورد بررسی قرار گرفته است. غشای مورد استفاده از نوع نفیون 117 و ابعاد تک سل 10×10cm است. از محلول متانول با غلظت های 0.5، 1، 1.5، 2 و 3 مولار استفاده شده است. عمق کانال به ترتیب 1، 1.5 و 2 میلی متر انتخاب شده و برای بررسی تاثیر عمق کانال، همزمان عمق کانال آند و کاتد تغییر کرده است. غلظت بهینه متانول برای تک سل فوق حدود 0.5 الی 1.5 مولار می باشد.بر اساس آزمایشات مختلف هرچه عمق کانال کمتر باشد انتقال جرم بهتر صورت گرفته و خارج کردن دی اکسید کربن راحت تر صورت می گیرد. نتایج حاصل عمق بهینه کانال برای عملکرد تک سل فوق را 1میلی متر نشان می دهد.

آمار یکساله:  

بازدید 100

دانلود 49 استناد 0 مرجع 16
نویسندگان: 

NAJARI FARES | Baradaran Ideh | NAJARI DORSA

اطلاعات دوره: 
  • سال: 

    2020
  • دوره: 

    10
  • شماره: 

    1
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    910
  • بازدید: 

    10101
  • دانلود: 

    59505
چکیده: 

Background: methanol is a toxic alcohol found in illegal liquor, and its poisoning may cause death if not treated timely and properly. In 2018, methanol toxicity in Iran increased dramatically. Regarding the high prevalence of methanol toxicity, its high mortality rate, and the cost of treatment as well as the importance of timely diagnosis in the treatment of this condition, we decided to review methanol toxicity, its signs, symptoms, diagnosis, and treatment. Evidence Acquisition: We searched for articles on reliable databases such as Embase and Medline from January 2018 to May 2018 using the following keywords: “ methanol, ” “ toxic alcohol, ” and “ ethanol toxicity treatment. ” Results: This review discusses how to diagnose methanol toxicity by using clinical signs and symptoms and laboratory examinations; it also suggests new treatments. Meanwhile, we provide alternatives for diagnosis in case of shortages of tests in the emergency department. Conclusion: Diagnosis of ethanol toxicity due to non-specific signs and symptoms, late patient’ s referral, and lack of proper history-taking can be very difficult and delay the onset of treatment. There is also no clear scientific evidence as to whether ethanol or fomepizole should be used as the first choice of therapy for methanol toxicity because there is no direct comparison between these two antidotes regarding their effectiveness and safety. The appropriate antidote is chosen depending on the availability, cost, accessibility of hemodialysis, and the physician’ s experience. If the therapist does not have enough experience, it is easier to use fomepizole.

آمار یکساله:  

بازدید 10101

دانلود 59505 استناد 910 مرجع 0
اطلاعات دوره: 
  • سال: 

    2019
  • دوره: 

    22
  • شماره: 

    11
  • صفحات: 

    671-672
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    16495
  • دانلود: 

    8693
چکیده: 

methanol is a clear liquid with high toxicity. methanol intoxication may result from accidental exposure, overconsumption of compounds containing methanol with suicidal intent, or following consumption of distilled and contaminated alcoholic beverages. This report describes a case of transdermal methanol intoxication, which is a rare condition. A 58-year-old woman presented with nausea, vomiting, weakness, diplopia and dizziness. On neurological examination, she only had diplopia. On physical examination, a hyperemic lesion with clear borders was found over the right knee. The patient’ s recent medical history revealed that four days prior to the onset of symptoms, she had covered her knee with a methanol-soaked bandage in an attempt to alleviate her knee pain. She had a high osmolar gap as well as high anion-gap metabolic acidosis (HAGMA). methanol intoxication was suspected due to HAGMA and high osmolar gap. Serum methanol levels were subsequently measured and found to be 37. 9 mg/dL. The patient was treated with intravenous (IV) bicarbonate, IV ethyl alcohol and hemodialysis. She was discharged with no central nervous system or ophthalmologic sequelae. methanol poisoning should be kept in mind in patients with diplopia and unexplained metabolic acidosis. Although most methanol intoxication cases occur after oral ingestion, it should be considered that methanol poisoning may occur transdermally.

آمار یکساله:  

بازدید 16495

دانلود 8693 استناد 0 مرجع 0
strs
اطلاعات دوره: 
  • سال: 

    2014
  • دوره: 

    0
  • شماره: 

    11
تعامل: 
  • بازدید: 

    1155
  • دانلود: 

    0
چکیده: 

NAFION-CESIUM SALT OF HETEROPOLYACID- PROTON EXCHANGE MEMBRANE CONTAINING CLAY WAS PREPARED VIA SOLUTION CASTING METHOD FOR DIRECT methanol FUEL CELL APPLICATIONS. THE XRD ANALYSIS WAS CONDUCTED TO CHARACTERIZE THE NANOCOMPOSITE MEMBRANE STRUCTURE. methanol CROSSOVER THROUGH POLYMER ELECTROLYTE MEMBRANES IS A CRITICAL ISSUE AND CAUSES AN IMPORTANT REDUCTION OF PERFORMANCE IN DIRECT methanol FUEL CELLS. IN THIS WORK CESIUM HYDROGEN SALT OF HETEROPOLYACID (CS2.5H0.5PW12O40) ARE INCORPORATED INTO K10 TYPE OF MONTMORILLONITE IN AN EFFORT TO IMPROVE THE SELECTIVITY OF NAFION MEMBRANE. methanol PERMEABILITY OF CASTED MEMBRANES WAS MEASURED BY REFRACTIVE INDEX METHOD. RESULTS SHOW ALL COMPOSITE MEMBRANES HAVE LOWER methanol PERMEABILITY THAN THE RECAST NAFION MEMBRANE. THE LOWEST methanol PERMEABILITY OF THE DEVELOPED MEMBRANES IN THIS STUDY WAS 16.51×10-7 CM2S-1 WHICH WAS LOWER THAN RECAST NAFION MEMBRANE.

آمار یکساله:  

بازدید 1155

دانلود 0
نویسندگان: 

PALO D.R. | DAGLE R.A. | HOLLADAY J.D.

نشریه: 

CHEMICAL REVIEWS

اطلاعات دوره: 
  • سال: 

    2007
  • دوره: 

    107
  • شماره: 

    -
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    315
  • بازدید: 

    8947
  • دانلود: 

    9195
کلیدواژه: 
چکیده: 

آمار یکساله:  

بازدید 8947

دانلود 9195 استناد 315 مرجع 0
اطلاعات دوره: 
  • سال: 

    2013
  • دوره: 

    0
  • شماره: 

    21
تعامل: 
  • بازدید: 

    1365
  • دانلود: 

    0
چکیده: 

INTRODUCTION: MARRUBIUM CRASSIDENS ENDEMIC TO ARMENIA, AZARBAIJAN, TURKEY AND IRAN IS USED IN FOLK MEDICINE FOR A VARIETY OF AILMENTS.OBJECTIVE: THE GOAL OF OUR STUDY WAS TO ASSESS THE BIOLOGICAL ACTIVITY OF M. CRASSIDENS TESTING THE methanol EXTRACT OF AERIAL PARTS OF THE PLANT FOR ITS ANTIMICROBIAL ACTIVITY AGAINST 5 KNOWN BACTERIA AND A FUNGUS. ...

آمار یکساله:  

بازدید 1365

دانلود 0
اطلاعات دوره: 
  • سال: 

    2016
  • دوره: 

    18
  • شماره: 

    11
  • صفحات: 

    0-0
تعامل: 
  • استنادات: 

    0
  • بازدید: 

    18487
  • دانلود: 

    26859
چکیده: 

Introduction: methanol is a highly toxic substance and methanol poisoning results in severe health situations. methanol poisoning occurs when it is consumed by various methods such as orally, by inhalation, and transdermally. Transdermal poisoning is rarely seen and causes severe health complications.Case Presentation: A 59-year-old male patient was admitted to the emergency room due to blurred vision and knee pain. He had wrapped alcohol soaked cotton around his knees because of pain, and left it for 10 hours at night. Onphysical examination the knees only exhibited redness. Upon fund uscopic examination, signs of poisoning were not seen, but a high anion gap metabolic acidosis was shown by arterial blood gas analysis. Hemodialysis was performed for severe acidosis and the patient was admitted to the ICU. The patient was treated and discharged from the ICU without sequelae.Conclusions: methanol poisoning presents to the emergency department in our country with many different situations and with varying histories. In different parts of the world, transdermal intoxication cases maybe more prevalent and they maybe overlooked, therefore, we aimed to present this case.

آمار یکساله:  

بازدید 18487

دانلود 26859 استناد 0 مرجع 0
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