نتایج جستجو برای: sp وst مد
تعداد نتایج: 129479 فیلتر نتایج به سال:
در این پژوهش از 15 برش از خاور تا باختر البرز نمونهگیری انجام شد که بهترین برش و کاملترین آنها از نظر غنای ماکروفسیل و میکروفسیل برش آبرندان است. در شمال باختر شهرستان دامغان 54°15’54.9’’E 36°21’12.7’’ N با موقعیت جغرافیایی از 807 نمونه براکیوپود مطالعه شده در طی این مطالعات سیستماتیک 22 گونه و 10 جنس و 5 روخانواده یافت شد که جنسها و گونههای یافت است. روش مطالعات سیستماتیک بر اساس کار Will...
کنه های خانواده camerobiidae از کنه های شکارگر خاک زی محسوب می شوند. در این مطالعه که طی سال های 1391-1390 در برخی مناطق ایران انجام گرفت، فون کنه های این خانواده در این مناطق مورد شناسایی قرار گرفت. در این بررسی جمعاً 12 گونه متعلق به 2 جنس شناسایی شد که تعداد 8 گونه برای اولین بار برای فون دنیا گزارش گردید که با علامت (?) مشخص شده اند. family: camerobiidae southcott, 1957 +genus: neophyllob...
چکیده ندارد.
the present report discusses disseminated fusariosis in a 15 year old boy with chronic granulomatous disease (cgd). he was admitted to the hazrat rasool acram hospital in november 1995, with a chronic wound in the right ankle and buttock area. antibacterial therapy was started, but there was no response. the patient was still febrile. chest x-ray revealed parahilar lesions in both lungs. tissue...
to enhance solubility and the performance of a plant gum (from south peach tree of china, sp gum) as a drilling fluid additive, we explored the potential of modified sp (msp) gum by modifying it with epichlorohydrin. the modification conditions, such as the mass ratio of the crosslinking agent, ph and temperature, were optimized and the results show that 56.40 g/100g mass ratio of the crosslin...
biodegradation of polycyclic aromatic hydrocarbons, toxic compounds widely distributed in the environment by bacteria, is a cheap and safe cleaning up method. the present study attempts to isolate and characterize dioxygenase-producing bacteria which are able to degrade phenanthrene and pyrene from refinery soils. it also aims to assess in vitro biodegradation. to do so, two contaminated soil s...
bioremoval and bioreduction activities of hydrocarbon (diesel) isolation from environmental samples were studied by the activity of biosurfactant production, and calculating emulsification index, gravimetric, and ftir analysis along with the estimation of bacterial biomass. sample from soil near petrol, diesel pumps and water sample from thesjaswini river near padannakad, kasaragod, kerala, ind...
vanillin is undoubtedly one of the most popular and widely used flavoring agents in the world. natural vanillin is extracted from vanilla beans and is relatively expensive. moreover, the consumer demand for natural vanillin highly exceeds the amount of vanillin extracted by plant sources. this had led to the investigation of alternative routes for its production such as microbial bioconversion....
background and objectives: bacillus species are attractive industrial organisms due to their rapid growth rates leading to a short fermentation cycle and for their capacity to secrete important enzymes and proteins such as xylanase into the extracellular medium. considering the industrial importance of xylanase, in this current study, bacillus spp. were isolated from different soils and were sc...
the determination of toxoplasma gondii prevalence in a variety of domestic birds is thought as a good indicator of distribution of t.gondii ooccyts in the environment. to verify the potential role of domestic birds in circulating toxoplasmosis in iran, the present study was conducted in mazandaran provinces, northern iran. latex agglutination test (la) antibodies were found in 25 of 58 free-ran...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید