This study was aimed to identify the reality of extension farm activities in providing services farmers middle Euphrates governorates. The included 54 paragraphs divided into 3 axes outline which included: implemented inside farm, outside coordination and participation with relevant institutions. A random sample 60% farms each governorate selected using a questionnaire from 41 respondents. rese...

OBJECTIVE This study was to evaluate the patterns of central lymph nodes metastasis, by analyzing the results of surgery in clinical NO (cNO) papillary thyroid carcinoma (PTC). METHOD We retrospectively studied the effect of surgical treatment among 123 cN0 PTC patients. All the patients underwent central lymph node dissection; 47 patients underwent ipsilateral neck dissection and 9 patients ...

  T he purpose of this study was to examine farm operations cooperation groups in Central Agricultural Zone of Delta State, Nigeria. All the members of the six  selected groups were used for the study. The data which were collected with the use of questionnaire and interview schedule were analyzed with the use of frequency counts, percentages and Tobit regression model. Most of the members we...

We consider three Lie algebras: Der C((t)), the Lie algebra of all derivations on the algebra C((t)) of formal Laurent series; the Lie algebra of all differential operators on C((t)); and the Lie algebra of all differential operators on C((t)) ⊗ Cn. We prove that each of these Lie algebras has an essentially unique nontrivial central extension. The Lie algebra of all derivations on the Laurent ...

We investigate the W∞ algebra in the integer quantum Hall effects. Defining the simplest vacuum, the Dirac sea, we evaluate the central extension for this algebra. A new algebra which contains the central extension is called the W1+∞ algebra. We show that this W1+∞ algebra is an origin of the KacMoody algebra which determines the behavior of edge states of the system. We discuss the relation be...

The Central Institute of Psychiatry provides extension consultation services at two coalfield hospitals of Bihar, representing the intermediate and central level of health care delivery system. Analysis of data covering a period of one year, from September 1988 to August 1989, revealed significant differences in the utilization pattern of the two centres. The differences relate to the proportio...

It is shown that a central extension of a Lie groupoid by an Abelian Lie group A has a principal A-bundle structure and the extended Lie groupoid is classified by an Euler esclass. Then we prove that for a symplectic α-connected, αβtransversal or α-simply connected groupoid, there exists at most one central S-extension, the Euler es-class of which corresponds to the Poisson cohomology class of ...

We show that every algebraically–central extension in a Mal’tsev variety — that is, every surjective homomorphism f : A−→ B whose kernel–congruence is contained in the centre of A, as defined using the theory of commutators — is also a central extension in the sense of categorical Galois theory; this was previously known only for varieties of Ω-groups, while its converse is easily seen to hold ...

The Variscan French Massif Central experienced two successive stages of extension from Middle Carboniferous to Early Permian. In the northern Massif Central, the first stage began in the late Visean, immediately after nappe stacking, and is well recorded by NamurianWestphalian synkinematic plutonism. The Middle Carboniferous leucogranites widespread in the NW Massif Central (Limousin and Sioule...