نتایج جستجو برای: excluding the central parts

تعداد نتایج: 16115555  

Journal: :J. Comb. Theory, Ser. B 1999
Reinhard Diestel Robin Thomas

We extend the excluded Kn minor theorem of Robertson and Seymour to infinite graphs, and deduce a structural characterization of the infinite graphs that have no Kא0 minor. The latter is a refinement of an earlier characterization of Robertson, Seymour and the second author.

2016
Abraham S.H. Breure Valentín Mogollón Avila

A faunal overview is presented of the molluscan families Amphibulimidae, Megaspiridae, Odontostomidae, Orthalicidae, Simpulopsidae in Bolivia, Ecuador, and Peru. These Central Andean countries are known for their biodiverse malacofauna, of which the superfamily Orthalicoidea takes relatively a large share. In this paper the five families containing 103 (sub)species, for which systematic informa...

Journal: :Journal of the Japan Society of Precision Engineering 1973

2002
Jan Chrastina

Variational integrals containing several functions of one independent variable subjected moreover to an underdetermined system of ordinary differential equations (the Lagrange problem) are investigated within a survey of examples. More systematical discussion of two crucial examples from Part I with help of the methods of Parts II and III is performed not excluding certain instructive subcases ...

Journal: :acta medica iranica 0
g. chams g. sadoughi

the authors describe two interesting and seldom cases of atrophia gyrata j and believe it to be a congenital hereditary disease with a recessive character. like retinitis pigmentosa, it does not affect the central posterior parts of the retina but the lesions are around the periphery. the visual fields are narrowed. they discuss; the similarity of this disease with atrophia gyrata described by ...

Journal: :محیط شناسی 0
میرسجاد فخری کارشناس ارشد هیدروژئولوژی گروه علوم زمین دانشگاه تبریز اصغر اصغری مقدم استاد گروه علوم زمین دانشکدۀ علوم طبیعی، دانشگاه تبریز مرتضی نجیب کارشناس آب های زیرزمینی سازمان آب منطقه ای آذربایجان شرقی رحیم برزگر کارشناس ارشد هیدروژئولوژی گروه علوم زمین دانشگاه تبریز

introduction more than 90% of drinking water in cities around the world and about 40% of the agricultural water supply from groundwater resources.,thus, groundwater quality consideration issue is inevitable . one of the most important parameter which can show the quality of drinking water is nitrate concentration. nitrate enters the groundwater and surface water through the decomposition of hum...

Journal: :Journal of the Japanese Association for Petroleum Technology 1974

Journal: :Journal of Business Case Studies (JBCS) 2013

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