نتایج جستجو برای: epithermal

تعداد نتایج: 656  

2002
G. T. Nixon D. Massey

base and precious metals associated with porphyry, epithermal and acid sulphate or high-snlphidation hydrothermal systems (Panteleyev, 1992; Panteleyev and Koyanagi, 1993, 1994). The majority of these systems are associated with the Early to Middle Jurassic Island Plutonic Suite and Early Jurassic B O M ~ Group rocks. The regional mapping component of this study focused primarily on potential t...

2009
Jouni Uusi-Simola

Boron neutron capture therapy (BNCT) is a form of chemically targeted radiotherapy that utilises the high neutron capture cross-section of boron-10 isotope to achieve a preferential dose increase in the tumour. The BNCT dosimetry poses a special challenge as the radiation dose absorbed by the irradiated tissues consists of several dose components with different relative biological effectiveness...

Journal: :Journal of Radioanalytical and Nuclear Chemistry 2011

احمدی خلجی, احمد, حسین زاده, محمدرضا, رادمرد, کیخسرو, زمانیان, حسن,

The Mazra'eh Shadi is located about 130 km northeast of Tabriz (NW Iran) in the Arasbaran metallogenic belt. The deposit occurs as a series of veins within the Eocene andesites. Mineralization shows epithermal system that controlled by fault distribution. Epithermal textures within the veins include comb, vaggy quartz, cockade, boxworke, plate calcite and breccia. Pyrite is the main ore mineral...

Journal: :Minerals 2021

The Pellapahk Cu-Mo and Oleninskoe Au-Ag deposits in the western segment of Russian Arctic Kolmozero–Voronya greenstone belt are considered two parts an Archean (2.83–2.82 Ga) porphyry-epithermal system, probably oldest one defined Fennoscandian Shield. Formation deposit at epithermal stage system is indicated by spatial genetic relationships with sills granite porphyry, geochemical association...

Journal: : 2023

На Большом Кавказе описаны различные месторождения и рудопроявления золотого оруденения, в том числе эпитермального. Однако типизация золото-серебряного эпитермального оруденения с использованием физико-химических условий их формирования на современном уровне не проведена. Целью исследования является получение комплексной геолого-минералогической физико-химической характеристики руд уровне. Объ...

2003
A. Bolozdynya A. Bolotnikov J. Richards

The objective of this study is to demonstrate the feasibility of constructing a compact neutron detector that is sensitive to thermal and epithermal neutrons and has high rejection efficiency relative to gamma-ray background. A two-channel high-pressure He scintillation detector is considered for the detection of neutrons in coincidence mode. The detector consists of two large avalanche photodi...

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