Results 31 to 40 of about 8,359 (284)

Comparison of seven portable Raman spectrometers : beryl as a case study [PDF]

open access: yes, 2017
In this paper, a series of beryl varieties with the accent on emeralds was investigated using seven portable Raman spectrometers equipped mainly with 785- and 532-nm excitation lasers. Additionally, one dual system and a new portable sequentially shifted
Bersani, Danilo   +3 more
core   +2 more sources

X-ray Diffraction Study of Aquamarine from Shigar Deposits, Skardu Valley, Northwest Pakistan [PDF]

open access: yesInternational Journal of Economic and Environment Geology, 2017
Samples of aquamarine collected from pegmatite rocks in Shigar mines, Skardu valley were investigated by powder X-ray diffraction method. Qualitative phase analyses of the samples showed the presence of aquamarine as major phase with quartz, talc and ...
Manzoor Ahmad Badar   +3 more
doaj  

Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan

open access: yesYankuang ceshi, 2018
BACKGROUND The Sichuan Jiajika ore field is one of the most concentrated areas of lithium resources in China and even in the world. At present, the understanding of the spectroscopy of the Jiajika lithium deposit is still very poor.
DAI Jing-jing   +4 more
doaj   +1 more source

RESULTS OF NEW RUSSIAN INTRAOCULAR LENSES IMPLANTATION

open access: yesOftalʹmologiâ, 2017
Purpose: to analyze the data obtained from a multicenter study of the hydrophobic IOL Citrin and a hydrophilic IOL Aquamarine implantation and a comparison of the Acrysoft IQ with Citrine and IOL by the given parameters.Patients and methods.
D. D. Dementyev   +3 more
doaj   +1 more source

Clinical impact of cardiac magnetic resonance in patients with suspected coronary artery disease associated with chronic kidney disease (AQUAMARINE-CKD study): study protocol for a randomized controlled trial

open access: yesTrials, 2022
Background Although screening for coronary artery disease (CAD) using computed tomography coronary angiography in patients with stable chest pain has been reported to be beneficial, patients with chronic kidney disease (CKD) might have limited benefit ...
Teruo Noguchi   +25 more
doaj   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

open access: yesMolecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice   +16 more
wiley   +1 more source

Antimicrobial Applications in Agriculture: A Review

open access: yesJournal of Pure and Applied Microbiology, 2018
Antimicrobials receive a great response in agriculture industries. Rapid growth of agriculture products has encouraged huge development of antimicrobial agent to improve growth and health of animals and plants. This paper focuses on the applications of
Yusilawati Ahmad Nor   +4 more
doaj   +1 more source

Minerals in Afghanistan : gemstones of Afghanistan [PDF]

open access: yes, 2007
Afghanistan and gemstones have been inextricably linked for 6500 years and the country remains rich in precious and semiprecious gemstone deposits (Figure 1). Lapis lazuli, mined in the Hindu Kush since the Neolithic Period, was transported along the
Benham, Antony John, McIntosh, Robert
core  

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

FTIR study of aquamarines after gamma irradiation, heat treatment and electrodiffusion

open access: yesREM: International Engineering Journal
Beryl, Be3Al2(SiO3)6, is a natural gemstone with many colors. Some of these colors can be induced or modified by exposure to ionizing radiation, by heating, and maybe by electrodiffusion. Small contents of chromophore chemical elements are related to the
Danielle Gomides Alkmim   +2 more
doaj   +1 more source

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