نتایج جستجو برای: rosa sect synstylae

تعداد نتایج: 9549  

2012
Dines Bjørner

We seek foundations for a possible theory of domain descriptions. Sect. 2 informally outlines what we mean by a domain. Sect. 3 informally outlines the entities whose description form a description of a domain. Sect. 4 then suggests one way of formalising such description parts1. There are other ways of formally describing The exemplified description approach is model-oriented, specifically the...

Journal: :CoRR 2014
Jon Haël Brenas Rachid Echahed Martin Strecker

Description Logics [1] are logical formalisms for representing information about classes and objects. They are very often used as the basis of knowledge representation systems and have been used recently to develop OWL semantic web language, which can be viewed as an expressive Description Logic. There is an impressive variety of Description Logics with diverse expressiveness and complexity, or...

1998
S. Petracca F. Ruggiero

The effect of (a huge number of) pumping holes on beam dynamics and stability, described in terms of coupling impedances, is a fundamental issue and has been carefully investigated, both theoretically [1] and experimentally [2]. With the exception of a few very simple pipe geometris, for which the modal expansion of the electromagnetic field is available, beam coupling impedances can be only co...

Journal: :Matraga - Revista do Programa de Pós-Graduação em Letras da UERJ 2020

Journal: :Journal of nematology 1988
B A Mullin B B Brodie

Potato cultivars Katahdin (susceptible) and Rosa (resistant) were exposed to infective second-stage juveniles (J2) of Globodera rostochiensis for varying periods of time, after which root systems were washed and plants were placed in Hoagland's solution to assess J2 egression and male emergence. After transfer to liquid culture, many J2 egressed from both cultivars, but significantly more egres...

2005
Gabriel André D. Dubois Brito Ana Maria de Carvalho Moura

ROSA is an e-learning system, which enables the management of Learning Objects (LOs). However, since ROSA is a centralized system, it does not provide a complete integration of LOs created in local ROSAs of other institutions. This paper presents the evolution of ROSA into a peer-to-peer (P2P) system the ROSA P2P, and describes the integration process of LOs in this environment. It provides the...

2013
SHRUTI SRIVASTAVA JATIN JAISWAL HEMENDRA GAUTAM SURABHI SHARMA V RAO

Objective: The antiulcer activity of various extracts of Hibiscus rosa sinensis leaves was evaluated in pyloric ligation induced gastric ulcer in albino rats. Method: The leaves extracts were prepared by cold maceration process with petroleum ether, alcohol and water separately. Results: Oral administration of aqueous and alcohol extracts (200 and 400 mg/kg) of Hibiscus rosa sinensis leaves wer...

ژورنال: :مجله گیاهشناسی ایران 2012
یاسمین ناصح محمدرضا جوهرچی

سه گونه astragalus zurmatensis podlech & zarre ، a. similissimus podlech & zarre  و a. urgunensis podlech از بخش ammodendron  وa. kopetdaghi boriss. var. kopetdaghi  از بخش capriniبرای نخستین بار برای فلور ایران گزارش و با نزدیکترین خویشاوندان خود مقایسه می شوند. اندام های رویشی واریته اخیر بدون کرک است. همچنین نمونه تیپ دو گونه  a. semiglabricarpus وa. hekmat-safaviae بررسی و با یکدیگر...

ژورنال: :رستنیها 0
عباس قلی پور دانشیار گروه زیست شناسی، دانشگاه پیام نور، تهران، ایران ([email protected]) سپیده ساجدی کارشناس، مؤسسه تحقیقات گیاه پزشکی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران محمد امینی راد استادیار پژوهش، مؤسسه تحقیقات گیاه پزشکی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

جنس silene (caryophyllaceae)، با بیش از 100 گونه، یکی از جنس های بزرگ فلور ایران محسوب می شود. مطابق اطلاعات موجود، شمال غرب ایران؛ استان های اردبیل، آذربایجان شرقی و غربی، از مراکز مهم تنوع گونه های چندساله این جنس در ایران محسوب می شوند. طی بازنگری گونه های این جنس در این منطقه، نمونه های جالبی جمع آوری شدند که گزارش‏های جدیدی برای فلور ایران هستند. در این مقاله silene dianthoides و s. chustu...

2008
Andrey Grozin

In this lecture, the early history of asymptotic freedom is discussed. The first completely correct derivation of β0 in non-abelian gauge theory (Khriplovich, 1969) was done in the Coulomb gauge; this derivation is reproduced (in modernized terms) in Sect. 2. A qualitative physical explanation of asymptotic freedom via chromomagnetic properties of vacuum (Nielsen, 1981) is discussed in Sect. 3.

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