نتایج جستجو برای: free conditions

تعداد نتایج: 1314517  

Journal: :MATHEMATICA SCANDINAVICA 1973

1999
H. Chamati D. M. Danchev N. S. Tonchev

Finite–size scaling properties and Casimir forces in an exactly solvable quantum statistical–mechanical model Abstract A d–dimensional finite quantum model system confined to a general hypercubical geometry with linear spatial size L and " temporal size " 1/T (T-temperature of the system) is considered in the spherical approximation under periodic boundary conditions. Because of its close relat...

1997
H. Chamati D. M. Danchev N. S. Tonchev

Finite–size scaling properties and Casimir forces in an exactly solvable quantum statistical–mechanical model Abstract A d–dimensional finite quantum model system confined to a general hypercubical geometry with linear spatial size L and " temporal size " 1/T (T-temperature of the system) is considered in the spherical approximation under periodic boundary conditions. Because of its close relat...

2005
P. J. Forrester

The N-particle free fermion state for quantum particles in the plane subject to a perpendicular magnetic field, and with doubly periodic boundary conditions, is written in a product form. The absolute value of this is used to formulate an exactly solvable one-component plasma model, and further motivates the formulation of an exactly solvable two-species Coulomb gas. The large N expansion of th...

1997
H. Chamati D. M. Danchev N. S. Tonchev

Finite–size scaling properties and Casimir forces in an exactly solvable quantum statistical–mechanical model Abstract A d–dimensional finite quantum model system confined to a general hypercubical geometry with linear spatial size L and " temporal size " 1/T (T-temperature of the system) is considered in the spherical approximation under periodic boundary conditions. Because of its close relat...

Journal: :iranian journal of catalysis 2012
farhad shirini somayeh sarvi beigbaghlou seyyed vahid atghia

various types of aldehydes undergo crossed-aldol condensation with ketones in the presence of melamine trisulfonic acid (mtsa) under solvent-free conditions. the reported method is mild, efficient and has the advantages such as using heterogeneous catalysis, short reaction times, high yields of the products and the recyclability of the catalyst.

Hamideh Hamzeali Javad Mokhtari Mohammad Gorban Dekamin, Mohammad Reza Naimi-Jamal, Shahrzad Javanshir

Effective methodologies for efficient preparation of semicarbazones from aldehydes or ketones via milling and the subsequent regeneration of the parent carbonyls by gaseous nitrogen dioxide are described under solid-solid and gas-solid reaction conditions, respectively. These methods are fast, simple and environmentally benign which do not require the use of any auxiliaries such as catalyst...

Ahmad Ahaabani Ayoob Bazgir, Farzad Bahadoran Naser Safari

Phthalocyanine complexes of Cu, Co, Ni, Fe, Zn, Pd, Pt and Ru have been synthesized from reaction between phthalonitrile and proper metal salts upon exposure to microwave irradiation under solvent-free conditions and considerably reduced reaction times.

ANNE CHRISTINE BRU-CAPDEVILLE, HOSSAIN MOTTEIAN NAJAR, JOHANN HINRICH PETERS,

Human peripheral blood monocytes (HPBM) were cultured in the absence of human serum and were converted into a state exhibiting a high accessory function expressed by their ability of supporting lymphocyte proliferation. After a prolonged culture in serum free media the monocyte derived cells were highly viable, increased in size and developed veils and dendritiform elongatio'l1s. Paralleli...

Introduction: Dendritic cells are very important in basic studies and vaccine research, but isolation and culture of these cells face challenges due to their small number in tissues. Since there is no standard method, we addressed some of the factors affecting the efficiency of dendritic cell isolation and culture from BALB/c mouse bone marrow.   Materials & Methods: Bone marrow cells isolated...

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