Results 71 to 80 of about 3,490 (230)

Settled population of the lower Dnieper and South Bug in the 10th-13ih cent. [PDF]

open access: yes, 1991
У статті на основі нових археологічних матеріалів та з залученням писемних джерел досліджується питання про осіле населення понизь Дніпра та Південного Бугу — району постійного суперництва Давньої Русі та Візантії X—XIII ст.Проблема существования ...
Ієвлєв, М.М.   +1 more
core   +3 more sources

Synergistic Solar Interfacial Evaporation and Photocatalysis Enabled by a Hierarchical Porous Hydrogel Reactor

open access: yesAdvanced Functional Materials, EarlyView.
A tree‐inspired hydrogel interfacial reactor couples solar evaporation with photocatalysis for simultaneous desalination and waste water treatment. The bilayer design achieves 2.14 kg·m−2·h−1 evaporation rate with 79% dye degradation under one sun, demonstrating that photothermal heating and evaporation induced pollutant enrichment create a self ...
Yan Zhao   +4 more
wiley   +1 more source

Tuning Redox Dynamics in Cu‐Based Electrocatalysts: Effect of Secondary Metals

open access: yesAdvanced Functional Materials, EarlyView.
Advanced analysis of operando X‐ray absorption spectroscopy data reveals that secondary metals affect the redox processes in Cu‐based catalysts for electrocatalytic CO2 reduction. This influences the amount of oxides formed under pulsed reaction conditions and the distribution of reaction products.
Martina Rüscher   +17 more
wiley   +1 more source

Si‐Doped Nanocrystalline Diamond as Highly Sensitive Luminescence Thermometer for the Physiological Temperature Range

open access: yesAdvanced Functional Materials, EarlyView.
In this work, diamonds with negative charged silicon‐vacancy (SiV−) centers have been designed for use as thermometers in biomedical applications. Multiparametric analysis of the emission characteristics of the SiV− centers provides extraordinary sensitivity for temperature detection in the physiological temperature range.
María Gragera   +6 more
wiley   +1 more source

Transformation of settlement systems at dneeper region: from mega-sites to small sites at trypillia culture [PDF]

open access: yes, 2021
The “Age of mega-sites” in Trypillia Culture started at BI-II stage at the end of Vth Millenium BC. At this moment appeared first agglomerations at different areas: from Dniestr-Southern Bug interfluve to Dneeper.
Burdo, Nataliia, Videiko, Mykhailo
core  

Acid Site Design for Low Hydration Proton Exchange Membranes

open access: yesAdvanced Functional Materials, EarlyView.
α‐CF2 substitution adjacent to sulfonic acid increases acid strength and enables efficient proton transport under low hydration conditions. This molecular design reduces the dependence of hydrocarbon proton exchange membranes on excessive water uptake, addressing a key limitation of conventional hydrocarbon PEMs while maintaining favorable conductivity
Ajay Kumar   +10 more
wiley   +1 more source

THE INFLUENCE OF FISHING ON THE AGE STRUCTURE OF BREAM (ABRAMIS BRAMA) OF THE DNIEPER-BUG ESTUARY REGION [PDF]

open access: yes, 2013
The analysis of the dynamics of the age structure of the Lower Dnieper population of bream (Abramis brama) under increased pressure fishing is carried out. The data on the dynamics of indicators of the middle-weighted age of bream catches in the last ten
U. Pilipеnko   +2 more
core   +1 more source

Structure of Eastern Tripolie Culture [PDF]

open access: yes, 1999
У статті розглядаються походження і структура східнотрипільської культури. Порівняння її локальних варіантів дає змогу визначити загальне і особливе у розвитку культури в конкретних районах її існування.Неолитическая культура Боян является одним из ...
Цвек, О.В.
core   +3 more sources

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

COFs on MOFs: Layer‐by‐Layer Synthesis of MOF@COF Nanoparticles with Synergistic Adsorption

open access: yesAdvanced Materials, EarlyView.
A layer‐by‐layer strategy enables the growth of crystalline covalent organic framework (COF) shells on metal–organic framework nanoparticles, creating core–shell structures with tunable porosity. Ordered interstitial mesopores are formed during shell growth, which are connected with the COF's intrinsic micropores, thereby enhancing water sorption. This
Ana Guillem‐Navajas   +11 more
wiley   +1 more source

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