Results 61 to 70 of about 22,429 (239)

The Halab deposit, SW Zanjan: Volcanogenic massive sulfide Zn–Pb (Ag) mineralization, Takab–Takht-e-Soleyman–Angouran metallogenic district

open access: yesJournal of Economic Geology, 2021
Introduction The Halab Zn–Pb (Ag) deposit, 125-km southwest of Zanjan, is located in the Takab–Takht-e-Soleyman–Angouran metallogenic district (TTAMD), Sanandaj-Sirjan zone.
Fatemeh Karami   +3 more
doaj   +1 more source

Estimation of urban sprawl and its impacts on land use/land cover changes (case study: Zanjan City during 1986-2016) [PDF]

open access: yesعلوم محیطی, 2020
Introduction: Nowadays, the urban sprawl phenomenon has become one of the most important concerns of planners and policymakers. The lack of attention to this phenomenon has led to irreparable consequences such as threatening natural resources, and social,
Mohammad Taghi Razavian, Ali Rahimi
doaj   +1 more source

Simultaneous Determination of Nitrite and Nitrate in Milk Samples by Ion Chromatography Method and Estimation of Dietary Intake [PDF]

open access: yes, 2016
The presence of nitrate and nitrite in foods may be considered hazardous after ingestion in the gastrointestinal tract due to their reaction with naturally occurred secondary amines to form potentially carcinogenic nitrosamines.
Chamandust, S.   +6 more
core  

A Roadmap to 30.5% Efficiency in All‐Perovskite Tandem Solar Cells Using 3D Finite Element Analysis of CuSCN@GeSe Core‐Shell and CeO2 Electron Transport Layer Optimization

open access: yesSolar RRL, Volume 10, Issue 9, 13 May 2026.
This work demonstrates a roadmap to 30.5% efficiency in all‐perovskite tandem solar cells through 3D finite element analysis. By integrating a novel CuSCN@GeSe core–shell nanostructure and optimizing the CeO2 electron transport layer, the design achieves reduced recombination.
Maryam Shahrostami   +5 more
wiley   +1 more source

Petrogenesis of A-Type Khorasanlu Granitoid, Southeast of Zanjan: evidence for Eocene Extensional Magmatism, in Western Alborz, Iran

open access: yesJournal of Economic Geology, 2022
Khorasanlu intrusive body with monzonite to granite composition is located 75 km south-east of Zanjan city in the Western Alborz. This intrusive body has intruded into the Eocene rocks of the region.
Mojgan Salavati
doaj   +1 more source

Sleep quality in nurses working in different shifts [PDF]

open access: yes, 2015
The nursing staff who are working at hospitals with a shift-work scheduling might confront with sleep disorders related to the characteristics of nursing profession.
Azizollah, A., Hossein, A., Kord, F.
core  

Group velocity control in the ultraviolet domain via interacting dark-state resonances

open access: yes, 2007
The propagation of a weak probe field in a laser-driven four-level atomic system is investigated. We choose mercury as our model system, where the probe transition is in the ultraviolet region. A high-resolution peak appears in the optical spectra due to
Bolda E L   +14 more
core   +1 more source

Geology and Origin of the Dohneh Copper Mineralization, Northeast of Zanjan

open access: yesJournal of Economic Geology, 2019
Introduction The Dohneh copper deposit is located northeast of Zanjan within the Tarom subzone and the western Alborz-Azarbayjan magmatic belt. There are several reports of copper mineralization in the Tarom region such as the Aliabad Mousavi-Khanchay ...
Masoumeh Mohammadi   +3 more
doaj   +1 more source

Geochemistry and petrogenesis of the Alamkandi granitoid body and Fe skarn (west of Mahneshan, the Zanjan province)

open access: yesJournal of Economic Geology, 2021
Introduction Fe skarn deposits are the largest skarn deposits which are exploited for Fe as well as by-products of Cu, Co, Ni and Au (Meinert et al., 2005).
Farzaneh Nouri   +3 more
doaj   +1 more source

On Hadamard's Inequalities for the Convex Mappings Defined in Topological Groups and Connected Result [PDF]

open access: yes, 2009
In this paper, we study the Hadamard’s inequality for midconvex and quasi-midconvex functions in topological groups.
Morassaei, Ali
core  

Home - About - Disclaimer - Privacy