Classification of two and three dimensional Lie super-bialgebras

Using adjoint representation of Lie superalgebras, we obtain the matrix form of super-Jacobi and mixed super-Jacobi identities of Lie superbialgebras. By direct calculations of these identities, and use of automorphism supergroups of two and three dimensional Lie superalgebras, we obtain and classify all two and three dimensional Lie superbialgebras.Comment: 15 page

Vertical ground reaction forces on rigid and vibrating surfaces for vibration serviceability assessment of structures

Lightweight structures are sensitive to dynamic force generated by human walking and consequently can exhibit excessive vibration responses. The imparted forces, known as ground reaction forces (GRFs), are a key input in the vibration serviceability assessment of footbridges. Most GRF measurements have been conducted on rigid surfaces such as instrumented treadmills and force plates mounted on strong floors. However, it is thought that the vibrating surface of a footbridge might affect the imparted human force. This paper introduces a unique laboratory experimental setup to investigate vertical GRFs on both rigid surface (strong floor) and a higher-frequency flexible surface (footbridge). 810 walking trials were performed by 18 test subjects walking at different pacing frequencies. For each trial, test subjects travelled a circuit of a vibrating footbridge surface followed by a rigid surface. A novel data collection setup was adopted to record the vertical component of GRFs, and the footbridge vibration response during each trial. Frequency-domain analysis of both single-step and continuous GRFs was then performed. The results show that the footbridge vibration affects GRFs, and changes GRF magnitudes for harmonics in resonance with the footbridge vibration (up to around 30% reduction in the dynamic load factor of the third harmonic). This finding, and the measured GRFs, can be used for more accurate vibration serviceability assessments of existing and new footbridges

Oxidative effects of long-term onion (Allium cepa) feeding on goat erythrocytes

Toxic compounds such as disulfides of onions cause oxidative-induced haemolysis in several animal species. In order to study the outcomes of long-term onion consumption on some oxidative haemolysis markers, 12 adult female goats were allocated to three groups, receiving 0 (served as control), 30 (dry matter basis) and 60 spring-grown onion for 60 days. Blood samples were obtained before feeding the onion and every 10 days up to 80 days for measuring malonyldialdehyde (MDA), methaemoglobin (MetHb), mean corpuscular fragility (MCF), serum-free haemoglobin and serum lactate dehydrogenase (LDH) and for evaluating their relation to packed cell volume (PCV) and haemoglobin (Hb) concentrations. PCV and Hb concentrations reduced, however, remained within reference ranges in onion-fed goats. MetHb showed a significant negative correlation with both PCV and Hb (P < 0. 05) in onion-fed goats and a significant positive correlation with MCF and serum-free haemoglobin in goats receiving 30 onion. MetHb showed a significant positive correlation with MCF in goats fed with 60 onion. MDA showed a positive correlation with LDH and serum-free haemoglobin concentrations. These results suggest a role for oxidative damage in destructing red cells in goats feeding onions. However, it seems that up to 60 onions in diet can be consumed by goats without noticeable clinical anaemia. © 2011 Springer-Verlag London Limited

Effectiveness of health services Tariffs on Imam Ali (AS) Social Security Hospital’s performance of Charmahal and Bakhtiari province in 1393-1394

زمینه و هدف: ارزیابی جزء لاینفک هر فعالیت و کار اجرایی به شمار می رود، ارزیابی عملکرد بیمارستان نیز نقش مهمی در بهبود کمی و کیفی خدمات ارائه شده دارد و موجب می گردد پاسخگویی و مسئولیت پذیری در ارائه خدمات درمانی تقویت شده و حداکثر بهره برداری از منابع محدود و در دسترس سازمان میسر گردد. هدف این پژوهش تعیین نقش تعرفه های خدمات درمانی بر عملکرد بیمارستان تأمین اجتماعی امام علی(ع) استان چهارمحال و بختیاری می باشد. روش بررسی: روش پژوهش توصیفی- پیمایشی بوده و جامعه آماری پژوهش را کارکنان بیمارستان امام علی (ع) استان چهارمحال و بختیاری تشکیل می دهد که تعداد 186 نفر به شیوه طبقه ای تصادفی به عنوان نمونه در نظر گرفته شده اند. ابزار مورد استفاده در این پژوهش پرسشنامه محقق ساخته می باشد. پس از تأیید روایی جهت تعیین پایایی پرسشنامه 0/88 برآورد شده است. اطلاعات جمع آوری شده با استفاده از آزمون های t تک متغیره، آزمون t مستقل و آزمون فریدمن تحلیل شده است. یافته ها: یافته های پژوهش نشان داده است که میانگین عملکرد بیمارستان امام علی (ع) در حد متوسط بالا (3/73 از 5) بوده است. نقش تعرفه های خدمات درمانی بر عملکرد بیمارستان به ترتیب عبارت است از: عملکرد مالی (3/96)، ارائه خدمات بهتر به بیماران (3/72)، رضایتمندی کارکنان (3/65)، بهره وری منابع (3/85) و اثربخشی سطح کلینیکال (3/61). نتیجه گیری: تعرفه های خدمات درمانی نقشی قابل توجهی (در حد متوسط بالا) بر روی عملکرد بیمارستان داشته و می تواند به عنوان یکی از مهم ترین ملاک های ارزیابی عملکرد جهت برنامه ریزی های بهبود عملکرد مورد استفاده قرار گیرد

Study the sources of mercury vapor in atmosphere as a threatening factor for human health and bio-filtering methods for removal of toxic pollution

A global atmospheric transport model is used to calculate mercury concentrations in the atmosphere. In this study, a comprehensive analysis was made to describe the environmental behavior and pollution status of mercury (Hg). The most important aim in this study is to show mercury pollution sources and to introduce some new technologies for removing this dangerous material from air. In this paper, some bio technologies such as bio filtering method and bio adsorbent such as leaves of trees was introduced. The capacity and application of biotrickling filters for the removal of mercury vapor from simulated flue gases was expressed. It was resulted from paper that the most prominent source of mercury is the east of Asia and the southeast of Asia. The lowest source is concerned Australia. In this investigation it was found that activated carbon can be one of the best tools for removal of mercury vapor. The adsorbent uniquely combines a chelating ligand with an ionizing surface nano-layer on a mesoporous substrate was the other consequences of this study which can be as a suitable adsorbent for omitting this pollutant from atmosphere

Evaluation of total-LDH / heat resistant- LDH ratio in patients with acute myocardial infarction and unstable pectoral angina

چکیده: زمینه و هدف: اندازه گیری آنزیم های سرم به صورت معیار متداولی جهت تشخیص بیماران مشکوک به انفارکتوس میوکارد در آمده که از میان آنها می توان به لاکتات دهیدروژناز (LDH) و ایزوآنزیم های آن اشاره کرد. هدف این مطالعه مقایسه نسبت LDH تام به LDH مقاوم به حرارت، در بیماران مبتلا به انفارکتوس حاد میوکارد (MI) و آنژین صدری ناپایدار (UA) بود. روش بررسی: در این مطالعه توصیفی تحلیلی 110 بیمار با MI و 11 بیمار با UA، بستری در بخش CCU بیمارستان اکباتان همدان مورد مطامعه قرار گرفتند. تشخیص بیماری فرد بر اساس علایم بالینی، نوار قلب (ECG) و تغییرات آنزیمی بود. میزان LDH تام و LDH مقاوم به حرارت سرم 24 تا 48 ساعت بعد از بستری بر اساس مقدار مصرف نیکوتین آمید آدنین دینوکلئوتید فسفات (NADH) و تبدیل آن به نیکوتین آمید آدنین دینوکلئوتید (NAD) اندازه گیری شد. داده ها با استفاده از آزمون های آماری t و من ویتنی تجزیه و تحلیل گردیدند. یافته ها: نسبت LDH تام به LDH مقاوم به حرارت در بیماران مبتلا به MI 18/0±27/1 و در بیماران مبتلا به UA 39/1±51/2 بود (001/0

Study of the health threatening mercury effective parameters for its removal from the aqueous solutions by using activated carbons

A serious environmental threat from heavy metal ion pollution, especially mercury, has generated a great deal of attention in recent years. Mercury is one of the priority pollutant listed by USEPA as it can easily pass the blood-brain barrier and affect the fetal brain. High concentration of Hg (II) causes impairment of pulmonary function and kidney, chest pain and dyspnoea. Consequently, removal of mercury in water and wastewater assumes importance. In this review paper, we have evaluated the efforts which have been done for controlling the mercury emissions from aqueous solutions. According to the EPA agency, the tolerance limit for Hg (II) for discharge into inland surface water is 10 mu g/l and for drinking water is 1 mu g/l. Mercury (Hg) is one of the heavy metals of concern and has been found in the waste waters coming from manufacturing industry, and natural sources. Among several types of technology for removing of Hg in water (chemical precipitation, reverse osmosis, ion-exchange, etc.), adsorption is one of most frequently used. It is a complex process involving physical, chemical, and electrical interactions at sorbent surfaces. Therefore, in this study will investigate effective parameters such as pH, initial concentration and surface characteristic. Hafshejani MK, Khandani F, Heidarpour R, Sedighpour A, Fuladvand H, Shokuhifard R, Arad A. Study of the health threatening mercury effective parameters for its removal from the aqueous solutions by using activated carbons. Life Sci J 2012;9(4):1789-1791] (ISSN:1097-8135). http://www.lifesciencesite.com. 27

Complete removal of pathogenic bacteria from drinking water using nano silver-coated cylindrical polypropylene filters.

An attempt was made to investigate the removal of Escherichia coli bacteria from drinking water using nano silver-coated polypropylene water filter. For the production of nano silver filters, a modified Balzers 760 machine equipped with an electron beam gun was used. The nano-silver particles were made by electron beam bombardment of the silver metal, which were subsequently deposited on the polypropylene filters evenly. The thickness of the nano layer coated on the filters was 35.0 nm. The nano silver-coated filters were characterized using scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and atomic force microscopy. The antibacterial efficiency of the filters was evaluated using the membrane filter method. At a flow rate of 3 l/h, the output count of E. coli was zero after 7 h filtration when the input water had a bacterial load of 103 colony-forming units (cfu) per milliliter. The inductively coupled plasma/mass spectrometry (ICP/MS) results showed that the 35 nm layer of the silver nanoparticles were stable on the water filter and were not washed away by water flow even after 72 h

Post-fire Behaviour of Innovative Shear Connection for Steel-Concrete Composite Structures

YesSteel-concrete composite structures are commonly used in buildings and bridges because it takes advantage of tensile strength of steel and compressive strength of concrete. The two components are often secured by shear connectors such as headed studs to prevent slippage and to maintain composite action. In spite of its popularity, very little research was conducted on steel-concrete composites particularly on headed stud shear connectors in regards to its post-fire behaviour. This research investigates the post-fire behaviour of innovative shear connectors for composite steel and concrete. Three type of connectors were investigated. They are headed stud shear connectors, Blind Bolt 1 and Blind Bolt 2 blind bolts. Push-out test experimental studies were conducted to look at the behaviour and failure modes for each connector. Eighteen push tests were conducted according to Eurocode 4. The push test specimens were tested under ambient temperatures and post fire condition of 200˚C, 400˚C and 600˚C. The results in ambient temperature are used to derive the residual strength of shear connectors after exposing to fire. Findings from this research will provide fundamental background in designing steel-concrete composites where there is danger of fire exposure

Nano silver-coated polypropylene water filter: I. manufacture by electron beam gun using a modified Balzers 760 machine

As adequate freshwater supplies decrease steadily, novel technologies are required for water purification. Nanotechnology, a new scientific frontier, promises to revolutionize innovation in many industries. Advancements in nanotechnology are being applied in the water-purification industry to keep harmful bacteria out of drinking water. Due to its bactericidal properties, nano silver is used in many products as an antibacterial. This study aimed to produce a nano silver-coated water-treatment polypropylene filter via the physical vapor deposition method using the Balzers 760 machine equipped with an electron beam gun ESQ 110. The Balzers machine was modified in order to enable coating of the cylindrical filters in a homogenous manner. The nano silver particles were made by electron beam bombardment of the silver metal, which were subsequently deposited on the polypropylene filter evenly. The thickness of the nano layer coated on the filter was about 55.0nm in average, as revealed by the microprocessor unit of the Balzers machine during the coating process. The thickness of the nano layer and the chemical composition of the produced filters were studied by scanning electron microscopy, atomic force microscopy and the X-ray diffraction technique. The filter system produced in this work has the potential to be used as an efficient and cost-effective water treatment method. The inductively coupled plasma/mass spectrometry (ICP/MS) studies revealed that there was no nano silver particle present in the filtered water sample. Hence, there is no risk of contamination of drinking water with the silver nano particles upon application of the manufactured filters. This is the first report on the manufacture of nano silver-coated cylindrical polypropylene filter using the electron beam gun technique