Results 91 to 100 of about 20,803 (260)

Comparative field‐scale assessment of TLUD and Kon‐Tiki biochar systems: agronomic performance and net CO2e‐based techno‐economics

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Post‐harvest agricultural residues in Latin America are commonly underutilized, leading to greenhouse gas emissions and lost opportunities for bio‐based value creation. This study tests the hypothesis that decentralized, farmer‐scale pyrolysis technologies can deliver comparable agronomic benefits while exhibiting distinct techno‐economic and ...
Juan F. Saldarriaga   +7 more
wiley   +1 more source

Modelling and analysis of switching DC-to-DC converters in constant-frequency current-programmed mode [PDF]

open access: yes, 1979
An analysis of dc-to-dc switching converters in constant-frequency current-programmed continuous conduction mode is performed, and leads to two significant results.
Brown, Art   +3 more
core   +1 more source

Beyond salaries: Teachers' experiences of navigating early years education amid economic instability in Türkiye

open access: yesBritish Educational Research Journal, EarlyView.
Abstract The intersection of economic conditions and early years education has long been debated, particularly where financial constraints shape educational practice and professional realities. Türkiye, characterised by high inflation and structural vulnerabilities in purchasing power parity, provides a critical context for examining how economic ...
Ebru Aydın, Şerif Yüksel
wiley   +1 more source

Li-Ion Battery Charging with a Buck-Boost Power Converter for a Solar Powered Battery Management System

open access: yesEnergies, 2013
This paper analyzes and simulates the Li-ion battery charging process for a solar powered battery management system. The battery is charged using a non-inverting synchronous buck-boost DC/DC power converter.
Chien-Wei Ma, Jaw-Kuen Shiau
doaj   +1 more source

Circuit for clamping bridge overvoltages in voltage-fed quasi-Z-source converter [PDF]

open access: yes, 2016
Unlike the voltage source converter, the Z-source converter can boost as well as buck the input voltage. However, the presence of physically large components in the impedance network introduces large parasitic inductances into power device commutation ...
Kitson, Joanne, McNeill, J N
core   +2 more sources

Powering Transparency: Global Drivers of Sustainability Reporting in the Electricity Sector

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT We examine the drivers of sustainability reporting quality (QSR), conceptualised along two complementary dimensions, relevance and reliability, to assess how firm‐level attributes and institutional conditions jointly shape disclosure practices in the electricity sector.
Alva Marasigan   +3 more
wiley   +1 more source

Implementasi Kontroler PID Pada AVR (Automatic Voltage Regulator) Untuk Pengaturan Tegangan Eksitasi Generator Sinkron 3 Fasa [PDF]

open access: yes, 2011
In power generation, stability of voltage is very important things to note because it can affect the electrical system. Changes in output voltage of generator is influenced by various factors including the dynamic load and the magnetic amplifier voltage (
Amin Setiadji, Amin   +2 more
core  

Default Effect in ESG Investment: When a Recommendation Goes a Long Way

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Individual investors display a positive attitude toward ESG investments but typically fail to act upon it. We report results from a preregistered online experiment testing a default option on 1050 US investors examining the mechanisms driving the effectiveness of default options in promoting ESG investments.
Sai Sravanthi Ramadugula   +2 more
wiley   +1 more source

Derivation of linearized transfer functions for switching-mode regulations. Phase A: Current step-up and voltage step-up converters [PDF]

open access: yes
Small-signal models are derived for the power stage of the voltage step-up (boost) and the current step-up (buck) converters. The modeling covers operation in both the continuous-mmf mode and the discontinuous-mmf mode.
Owen, H. A., Jr.   +2 more
core   +1 more source

Discussion of the technology and research in fuel injectors common rail system [PDF]

open access: yes, 2017
Common rail is one of the most important components in a diesel and gasoline direct injection system. It features a high-pressure (100 bar) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors. Third-generation
Ishak, Izuan Amin   +5 more
core  

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