Global Units modulo Circular Units : descent without Iwasawa's Main Conjecture

Iwasawa's classical asymptotical formula relates the orders of the $p$-parts $X_n$ of the ideal class groups along a \ZM_p-extension $F_\infty/F$ of a number field $F$, to Iwasawa structural invariants \la and $\mu$ attached to the inverse limit X_\infty=\limpro X_n. It relies on "good" descent properties satisfied by $X_n$. If $F$ is abelian and $F_\infty$ is cyclotomic it is known that the $p$-parts of the orders of the global units modulo circular units $U_n/C_n$ are asymptotically equivalent to the $p$-parts of the ideal class numbers. This suggests that these quotients $U_n/C_n$, so to speak unit class groups, satisfy also good descent properties. We show this directly, i.e. without using Iwasawa's Main Conjecture

Half dimensional collapse of ends of manifolds of nonpositive curvature

This paper accomplishes two things. First, we construct a geometric analog of the rational Tits building for general noncompact, complete, finite volume $n$-manifolds $M$ of bounded nonpositive curvature. Second, we prove that this analog has dimension less than $\lfloor n/2\rfloor$

Cosmic Ray Neutron Sensing: Estimation of Agricultural Crop Biomass Water Equivalent

Earth Science; Soil Management; Water Management; Crop Nutrition; Nuclear; CRNS; Biomass Water Equivalent; Remote Sensing; Satellite Imager

Генезис нефтей месторождения Белый Тигр (Вьетнам) по данным о составе насыщенных ациклических углеводородов

Описаны общие характеристики состава рассеянного органического вещества пород миоцена и олигоцена в пределах месторождения Белый Тигр (Вьетнам) и сопоставление его с соответствующими характеристиками нефтей

Cosmic Ray Neutron Sensing: Estimation of Agricultural Crop Biomass Water Equivalent

Earth Science; Soil Management; Water Management; Crop Nutrition; Nuclear; CRNS; Biomass Water Equivalent; Remote Sensing; Satellite Imager

ISOLATION AND SELECTION OF AFLATOXINS PRODUCING ASPERGILLUS FLAVUS FROM PEANUT

Aspergillus flavus is known as the main producer of carcinogenic aflatoxins. The presence of this fungus and aflatoxins is an important impactson food safety, human and animal health. Peanut is one of the most important crops in Vietnam and  is suitable to substrate for aflatoxins producing fungus growth. The isolation and identification of Aspergillus flavus species from peanut is an initial step for further study in Aflatoxins contamination control in peanut. 28 peanut samples selected in Luc Nam district - Bac Giang province were used for fungus isolation. The isolated fungus were purified, conducted DNA extract, amplified PCR products then performed sequencing ITS gene and used BLAST software to check alignment to identification the strains. As the result, 4 strains alignedwith Aspergillus flavus strains from National Center for Biology Information - United Nation such as: TUHT115, KP214054.1, MTCC 8654, ZJ4-A. Those strains were checked and confirmed the aflatoxins production in peanut samples