نتایج جستجو برای: 2012 n80
تعداد نتایج: 151395 فیلتر نتایج به سال:
Do we desire something because it has value? Or is the value of a thing a consequence of the fact that it is desired? To adopt the former alternative is to involve oneself in the task of providing a theory of value which would make value a property things have as it were prior to their serving as objects of desire. Theories of this sort have been developed inter alia by Meinong, Nicolai Hartman...
We present a variant of Reimer’s proof of the van den Berg-Kesten conjecture.
Death during autoerotic episodes is of special concern to law enforcement officials, the coroner or medical examiner, the family of the decedent, and to society as a whole. As in the probing of any violent demise, accurate preservation of all evidentiary material, complete photographic documentation, reconstruction of the scene, and interviews with family and acquaintances ("psychological autop...
Virtual environments are becoming more and more accepted, and part of the everyday online experience for many users. This offers new potential for both surveillance and data mining. Some of the techniques used are discussed in this paper. However, such activities may in many countries conflict with the legal framework in place, for example with the German Federal Data Protection Act (Datenschut...
New species Antocha (Antocha) koreana from South Korea is described and illustrations of the distinguishing morphological features, including wing venation, male and female genitalia and male antenna, are provided with a discussion on distinguishing newly described species from other similar species. Habitat information for new species is presented. Antocha (Antocha) subconfluenta Alexander, 19...
Three new species of Macrelmis Motschulsky, 1859 are described and illustrated based on adult males from Rio de Janeiro, Minas Gerais and São Paulo states (southeastern Brazil). A new species groups definition is proposed for the genus, with a redefinition of the former six (aristeae sp. group, celsa sp. group, isus sp. group, granigera sp. group, milleri sp. group and striata sp. group) and de...
Abstract Acid fracturing is an effective technology for increasing oil and gas production. However, the acid will cause serious corrosion to tubing. In this paper, inhibition performance of TG202 inhibitor acidizing high temperature high-pressure wells on N80 carbon steel 13Cr martensitic stainless-steel tubing in 15% hydrochloric was studied by electrochemical noise technology. The results sho...
طراحی جداری چاه های نفت واسطه حساسیت در ایمنی و همچنین در برداشتن هزینه های زیاد برای چاه از اهمیت فراوانی درمهندسی حفاری برخوردار است. تاکنون روش های مختلفی برای طراحی که در ضمن تضمین ایمنی جداری، نگاهی منطقی به هزینه ها نیز داشته باشد، به کار گرفته شده است. آنچه که امروزه بشتر مورد استفاده قرار می گیرد روشی موسوم به بیشترین بار وارده است. این روش طبق ضوابطی بدترین حالت ممکن را برای جداری قرض ...
چکیده به منظور مطالعه اثر نیتروژن و پتاسیم روی صفات کمی و کیفی چغندرقند در شرایط شور، آزمایش مزرعه ای در ایستگاه تحقیقات شوری رودشت ( واقع در اصفهان ) انجام شد. آزمایش به صورت فاکتوریل در قالب طرح بلوک های کامل تصادفی با 3 تکرار و 48 کرت آزمایشی صورت گرفت (مساحت هر کرت 24 متر مکعب انتخاب شد). تیمارها شامل 4 سطح نیتروژن n0 ، 50 درصد توصیه ( n80 )، 75 درصد توصیه ( n120 ) و توصیه بر اساس آزمون خا...
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