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MINERALOGICAL-GEOCHEMICAL FEATURES OF ZIRCON FROM THE KUMIR GRANITIC STOCK, GORNY ALTAI [PDF]

open access: yesМинералогия, 2022
Data on U-Pb age and composition of zircon from the Kumir granitic stock (Gorny Altai) and related greisens are presented for the first time. The magmatic, metamictic and pneumatolytic-hydrothermal zircons exhibit specific changes in main and trace ...
A.I. Gusev
doaj   +1 more source

Mechanical Property Comparison of Al11Si Wheels Grain Refined by Ti, Nb and MTS [PDF]

open access: yesArchives of Foundry Engineering, 2022
In this work, 25 wheels were cast with three different grain refiners: Al5Ti1B, Al3Nb1B and MTS 1582. Samples were machined from the wheels to check the mechanical properties.
F. Aydogan   +4 more
doaj   +1 more source

A Breast Cancer Detection Problem using various Machine Learning Techniques in the Context of Health Prediction System [PDF]

open access: yesE3S Web of Conferences, 2023
Today, breast cancer is one of the most common diseases that can cause certain complications, sometimes worst-case scenario is death. Thus, there is an urgent need for a diagnosis tool that can help doctors detect the disease at an early stage and ...
Najat Rafalia   +2 more
doaj   +1 more source

Sentiment Analysis of User Preference for Old Vs New Fintech Technology Using SVM and NB Algorithms

open access: yesManagement Systems in Production Engineering, 2023
The aim of this study is to use sentiment analysis to compare the efficiency of old and new fintech technologies by collecting data from various sources and analyzing it using the SVM and NB algorithms.
Nurdin Tubagus Asep   +3 more
doaj   +1 more source

New ore-magmatic ring-type structure in the Muzkol-Rangkul anticlinorium, Central Pamir

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2023
Background. The minerogenic specialization of the Muzkol-Rangkul anticlinorium consists in industrial gemstone deposits of ruby, cordierite, almandine, aquamarine, topaz, tourmaline, scapolite, etc. Large ore objects in this area are unknown.
A. K. Litvinenko, Sh. A. Odinaev
doaj   +1 more source

Determination of Rare Earth Elements and Nb, Ta, Zr, Hf in Polymetallic Mineral Samples by Inductively Coupled Plasma-Mass Spectrometry Coupled with Open Acid Dissolution and Lithium Metaborate Alkali Fusion

open access: yesYankuang ceshi, 2020
BACKGROUND Mixed acid open acid dissolution and alkali fusion methods are the two main dissolution methods for determination of rare earth and refractory elements in geological samples by inductively coupled plasma-mass spectrometry (ICP-MS).
MEN Qian-ni   +3 more
doaj   +1 more source

On nB-algebras [PDF]

open access: yesMathematica Moravica, 2003
It is proved that an \(n\)-ary analog of \(B\)-algebras described by \textit{J. R. Cho} and \textit{H. S. Kim} [Quasigroups Relat. Syst. 8, 1-6 (2001; Zbl 0994.08003)] can be uniquely determined by an \(n\)-ary group.
Ušan, Janez, Žižović, Mališa
openaire   +2 more sources

Analisis Sentimen Kebijakan Pembelajaran Tatap Muka Menggunakan Support Vector Machine dan Naive Bayes

open access: yesJRST: Jurnal Riset Sains dan Teknologi, 2022
Analisis sentimen kebijakan pembelajaran tatap muka selama pandemi dapat dianalisis menggunakan data dari tweet di platform media Twitter. Dari hasil crawling data diperoleh 152 data, selanjutnya dilakukan proses pre-processing untuk memberikan data dari
Muhammad Siddik Hasibuan, Akbar Serdano
doaj   +1 more source

Influence of alloying Ti, Mo and W on the kinetic and strength characteristics of membrane alloys based on Nb and V

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
An analysis was carried out of influence of , Ti Mo and W on the nature of the amorphous nano- and crystalline structures on the strength and kinetic characteristics – diffusion D and permeability Φ of hydrogen in membrane alloys based on binary Nb - Ni ...
Valery A. Polukhin   +2 more
doaj   +1 more source

Los ortogneises peralcalinos del borde meridional de la Unidad Malpica-Tuy: caracteres geológicos, mineralógicos, geoquímicos y mineralizaciones de Y-Nb-Zr-TR asociadas

open access: yesEstudios Geologicos, 1995
Se resumen en este trabajo las principales características tectónicas, mineralógicas, petrológicas y geoquímicas de tres complejos peralcalinos situados en el extremo meridional de la Unidad Malpica-Tuy, en Galicia (NO de España).
A. Martín-Izard   +6 more
doaj   +1 more source

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