نتایج جستجو برای: besides existence of natural
تعداد نتایج: 21202078 فیلتر نتایج به سال:
چکیده در بخش اول این پروژه دو روش میکرواستخخرا به نامهای میکرواسخخرا امولسیونی با کمک اموا فراصتتتو 1 و میکرواستتتخخرا مای – مای با کمک هوا 2 ، به عنوان دو روش میکرواستتتخخرا بدون حلال پخشکننده 3 ، برای اسخخرا برخی هیتدروکربتنهای آروماتیتک حلقوی 4 از نمونتههای آبتی بهکار گرفخه و پارامخرهای موثری همچون نوع حلال اسختتتتخرا کننده، حجم حلال اسخخرا کننده، میزان نمک، زمان تابش اموا فراصتو ، تددا...
the existence of a high natural radiation area in the northern part of iran (ramsar) is proved. ra 226 in soil is measured. the results are: minimum 23.5 pci/g and maximum 999 pci/g soil. environmental radioactivity is from 0.1 to 5 mr/h.
In this article we present a class of formulas φn, n ∈ Nat, that need at least 2 assumption occurrences to be proved in a normal proof in Natural Deduction for purely implicational minimal propositional logic. In purely implicational classical propositional logic, with Peirce’s rule, each φn is proved with only one assumption occurrence in Natural Deduction in a normal proof. Besides that, the ...
The current research with the goal of presenting learning disorder diagnostic indexes in WISC-R Index, analyzed learning disorders, using the resources, review method and introduced 6 diagnostic indexes for learning disorders in WISC-R standard. The results indicated that the most common application pattern for children suffering from learning disorder in WISC- R standard and applicable diagnos...
food safety is considered as an important world concern. the detection of pathogen and toxic materials in food has an important role in public health care. in recent years, the applications of microbial biosensor have been developed as a new approach for toxicity control. luminescent microbial biosensor is an appropriate biological tool for protection of natural environment. this type of biosen...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
We consider a periodic magnetic Schrödinger operator on a noncompact Riemannian manifold M such that H(M, R) = 0 endowed with a properly discontinuous cocompact isometric action of a discrete group. We assume that there is no electric field and that the magnetic field has a periodic set of compact magnetic wells. We review a general scheme of a proof of existence of an arbitrary large number of...
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