Results 181 to 190 of about 11,064,908 (240)

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

EcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang, Ji‐Xiang Guo, Qiming Huang, Kunpeng Li, Chi Li, Yajie Wu   +5 more
wiley   +1 more source

Building and indoor environmental quality assessment of Nigerian primary schools: A pilot study. [PDF]

Indoor Air, 2019
Toyinbo O, Phipatanakul W, Shaughnessy R, Haverinen-Shaughnessy U.   +3 more
europepmc   +1 more source

New‐Generation Integrated Devices: Multiple‐Energy Utilization and Integration Systems Based on Perovskite Photovoltaics

EcoEnergy, EarlyView.
This review highlights emerging integrated energy systems based on perovskite photovoltaics, including PSC–thermoelectric, photovoltaic–electrochemical, self‐charging, and building‐integrated architectures. By coupling multiple energy conversion and storage pathways, these multifunctional platforms enable enhanced solar utilization, improved stability,
Yihuai Huang, Wenguang Zhang, Yuchen Xiong, Zijun Yi, Changkai Huang, Qinghui Jiang, Abdul Basit, Guibin Shen, Yubo Luo, Xin Li, Junyou Yang   +10 more
wiley   +1 more source

Polyelectrolyte Layer as a Work Function Modifier for Transparent Electrodes Enabling Efficient Perovskite Solar Cells With Superior Low‐Light Performance

EcoEnergy, EarlyView.
Polyelectrolytes represent a low‐cost and effective platform for tailoring charge extraction interfaces in inverted perovskite solar cells (PSCs). In this work, we introduce a protonated polyethyleneimine (PEI) layer (pH = 2) between the ITO electrode and the PTAA hole transport layer to increase the apparent work function of ITO by 0.066 eV and reduce
Aleksandra Furasova, Anna Botnar, Vladimir Ivanov, Vadim Belyaev, Igor Margaryan, Daniel Sapori, Aleksandra Koroleva, Soslan Khubezhov, Dmitry Shestakov, Ekaterina V. Skorb, Sergey V. Makarov   +10 more
wiley   +1 more source

Nebraska Department of Environmental Quality

Nebraska Department of Environmental Quality, an agency of Nebraska government and a web portal providing information about the protection of Nebraska\u27s air, land and water ...
Nebraska. Department of Environmental Quality
core  

Fluorescent Colored Passive Radiative Cooling Based on Carbon Dots for Cooling Power Recovery

EcoEnergy, EarlyView.
We demonstrate colored passive radiative coolers consisting of a highly reflective porous ceramic base covered by an eco‐friendly luminescent carbon dot‐polymer composite, with two types of carbon dots enabling conversion of either ultraviolet or visible light, respectively.
Lin Liang, Chui Ting Kwok, Maksim Miropoltsev, Kaixin Lin, Elena V. Ushakova, Yang Fu, Wenqi Wang, Hao Li, Dong Lv, Yihao Zhu, Wenjie Liu, Andrey L. Rogach, Chi Yan Tso   +12 more
wiley   +1 more source

Associations between indoor environmental quality in schools and symptom reporting in pupil-administered questionnaires. [PDF]

Environ Health, 2019
Savelieva K, Marttila T, Lampi J, Ung-Lanki S, Elovainio M, Pekkanen J.   +5 more
europepmc   +1 more source

Transient Charging Dynamics in Stacked Ga2O3/ZnO Photovoltaic Units Governing Wavelength‐Selective Polarity Switching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work reveals a “Photovoltaic‐Capacitance” coupling mechanism in stacked Ga2O3/ZnO devices, defining the ZnO/graphene interface as a novel Photovoltaic Dynamic‐Capacitor (PDC). The wavelength‐selective bipolar response enables a physical layer secure communication protocol based on ternary optical logic (“1,” “0,” “−1”).
Songqi Zhao, Man Zhao, Dayong Jiang, Yuhan Duan, Haoming Wei, Qingcheng Liang, Rui Deng   +6 more
wiley   +1 more source

A Wireless Gas Sensor Network to Monitor Indoor Environmental Quality in Schools. [PDF]

Sensors (Basel), 2018
Ortiz Perez A, Bierer B, Scholz L, Wöllenstein J, Palzer S.   +4 more
europepmc   +1 more source

Origin of Physicochemical and Mechanical Stability of Low‐Temperature Prepared TiO2‐Based Photocatalytic Films: Surface Hydroxyl Density Matching

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Material science advances show how surface chemistry improves low‐temperature prepared TiO2‐SiO2 composite films. Using a colloidal‐based synthesis method instead of a powdered‐based one, researchers exploit hydroxyl groups' interfacial interactions to create nanoscale structures with superior physicochemical and mechanical stability.
Andraž Šuligoj, Mohamad El‐Roz, Goran Dražić, Frédéric Thibault‐Starzyk, Pegie Cool, Nataša Zabukovec Logar, Urška Lavrenčič Štangar, Nataša Novak Tušar   +7 more
wiley   +1 more source