نتایج جستجو برای: for inversion reaction

تعداد نتایج: 10499572  

2009
Yu-Feng Li Fang-Fang Jian

The title compound, C(30)H(26)O(2), was prepared by the reaction of a Wittig reagent and 2-methoxy-benzaldehyde. The mol-ecule lies about an inversion centre located at the midpoint of the C-C bond between the inner benzene rings. The crystal structure is stabilized by C-H⋯π inter-actions.

2014
Juanjuan Wei Houde She Lijun Shi Ziqiang Lei

The title mol-ecule, C32H30F2N2, a product of the condensation reaction of butane-2,3-dione and 4-fluoro-2-(1-phenyl-eth-yl)aniline, is located about an inversion centre. In the asymmetric unit, the dihedral angle between the planes of the benzene and phenyl rings is 84.27 (5)°. Neither hydrogen bonding nor aromatic stacking is observed in the crystal structure.

Journal: :Journal of vision 2015
Matthew Heath Caitlin Gillen Jeffrey Weiler

Antisaccades require the top-down suppression of a stimulus-driven prosaccade (i.e., response suppression) and the inversion of a target's spatial location to mirror-symmetrical space (i.e., vector inversion). Moreover, recent work has shown that antisaccade amplitudes are characterized by a statistical summary representation (SSR) of the target eccentricities included in a stimulus-set--a resu...

Journal: :فیزیک زمین و فضا 0
ابوالفضل اسدیان دانشجوی کارشناسی ارشد ژئوفیزیک، دانشکده مهندسی مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، ایران علی مرادزاده استاد، دانشکده معدن، پردیس دانشکده های فنی، دانشگاه تهران، علیرضا عرب امیری استادیار، دانشکده مهندسی مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، ایران علی نجاتی کلاته استادیار، دانشکده مهندسی مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، ایران داود رجبی دانش آموخته کارشناسی ارشد ژئوفیزیک، دانشکده مهندسی مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، ایران

helicopter-borne electromagnetic (hem) is a fast and high resolution airborne electromagnetic (aem) method that is frequently used for imaging of the subsurface resistivity structures. this is a versatile and cost effective method, frequently has used in mineral and groundwater exploration and various environmental problems. modern frequency-domain hem systems utilize small electromagnetic, mag...

Journal: :Faraday discussions 2003
Hans-Beat Bürgi

The potential energy surface is an important determinant of a chemical reaction. Three ways of deducing non-trivial properties of such surfaces from the results of crystal structure analyses are discussed and illustrated with examples. (1) The mapping approach brings together structures of the same molecular fragment from different environments to outline reaction coordinates and vibrations. (2...

ژورنال: مطالعات عرفانی 2016

Love is the profoundest and the most central concept in Sufi thought and manners. From the Sufi ontological point of view, being rests on the basis of love; and from the ethical one, Love is a strong rope for the Sufi to hang on in order to sublimate his being into the status of annihilation. It is often said that love requires no manners or orders. However, it demands levels and features of wh...

Journal: :journal of language and translation 0
shadab jabbarpoor islamic azad university, science and research branch, tehran, iran esmaeel abdollahzadeh english dept. of iran university of science and technology

the benefits of textual input enhancement in the acquisition of linguistic forms have produced mixed results in sla literature. the present study investigates the effects of textual enhancement on adult foreign language intake of two english linguistic forms-subjunctive mood and inversion structures-to explore the role of the type of linguistic items in input enhancement studies. it also invest...

Journal: :جغرافیا و توسعه ناحیه ای 0
علیجانی علیجانی نجفی نیک نجفی نیک

in order to identify different types of effective weather on patterns of inversion in mashhad, the researchers first prepared the inversion statistics, then, the sea level pressure and finally they prepared access to the zero meeting gmt cumulative 2.5 degrees in the range 20 to 47.5 degrees to 67.5 degrees north and 35 east center, university ncep angelia east of england norwich city. then for...

Journal: :geopersia 2012
mohsen ehteshami-moinabadi ali yassaghi abdolhossein amini

this paper presents evidence on mesozoic inversion of basin bounding faults within the taleqan-gajereh-lar paleograben (tglp) in central alborz range. for this purpose, well documented stratigraphy data across the tglp together with the new acquired structural data on the geometry and kinematics of the paleograben basin bounding faults are utilized. the tglp has evolved through the early and mi...

ژورنال: پژوهش های ریاضی 2021

  For an f-ring  with bounded inversion property, we show that   , the set of all basic z-ideals of , partially ordered by inclusion is a bounded distributive lattice. Also, whenever  is a semiprimitive ring, , the set of all basic -ideals of , partially ordered by inclusion is a bounded distributive lattice. Next, for an f-ring  with bounded inversion property, we prove that  is a complemented...

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