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741 Results Found

  • Feature Paper
  • Article
  • Open Access
1,207 Views
21 Pages

29 October 2025

As an important driving force for intelligent transformation, the development and application of industrial robots have promoted the transformation of traditional production modes and the upgrading of energy utilization methods, playing a significant...

  • Article
  • Open Access
242 Views
29 Pages

13 February 2026

Under the imperative of carbon emission mitigation, digital trade, emerging as a fusion of digital technologies and international commerce, has become a pivotal conduit for advancing sustainable development. This study constructs an innovative and co...

  • Article
  • Open Access
7 Citations
5,725 Views
26 Pages

Model-Based Solution for Upgrading Nitrogen Removal for a Full-Scale Municipal Wastewater Treatment Plant with CASS Process

  • Mengmeng Liu,
  • Meixue Chen,
  • Rong Qi,
  • Dawei Yu,
  • Min Yang,
  • Jiaxi Zheng,
  • Yuansong Wei and
  • Haizhou Du

15 March 2021

Aiming at providing cost-effective approach for upgrading the existing municipal wastewater treatment plants in the cold region of China to meet more stringent discharge standards of nitrogen removal, a full-scale sewage treatment plant with the CASS...

  • Article
  • Open Access
3 Citations
2,762 Views
34 Pages

30 October 2023

Natural systems of units {Ui} need to be overhauled to include the dimensionless coupling constants {αUi} of the natural forces. Otherwise, they cannot quantify all the forces of nature in a unified manner. Thus, each force must furnish a syste...

  • Article
  • Open Access
8 Citations
2,680 Views
13 Pages

29 February 2024

Biogas produced by anaerobic digestion contains different types of contaminants, and it is preferable to eliminate those contaminants before biogas’ energetic valorization or upgrading to biomethane as they are harmful to human health and detri...

  • Article
  • Open Access
40 Citations
5,437 Views
18 Pages

In this study, hydrogenotrophic methanogenic mixed cultures taken from 13 lab-scale ex-situ biogas upgrading systems under different temperature (20–70 °C), pH (6.0–8.5), and CO (0–10%, v/v) variables were systematically investi...

  • Perspective
  • Open Access
39 Citations
7,468 Views
11 Pages

Evolution and Prospects of Hydrothermal Carbonization

  • Pietro Romano,
  • Nicola Stampone and
  • Gabriele Di Giacomo

29 March 2023

Hydrothermal carbonization enables the valorization of biomass via thermochemical conversion into various products. Today, this technology is experiencing a situation similar to that experienced in the past by other process technologies. Of these tec...

  • Review
  • Open Access
17 Citations
3,022 Views
34 Pages

The complex pore structure of unconventional oil and gas reservoirs is one of the reasons for the difficulties in resource evaluation and development. Therefore, it is crucial to comprehensively characterize the pore structure, understand reservoir h...

  • Article
  • Open Access
14 Citations
5,947 Views
32 Pages

Multi-Indicator Assessment of Innovative Small-Scale Biomethane Technologies in Europe

  • Kathrin Bienert,
  • Britt Schumacher,
  • Martín Rojas Arboleda,
  • Eric Billig,
  • Samiksha Shakya,
  • Gustav Rogstrand,
  • Marcin Zieliński and
  • Marcin Dębowski

6 April 2019

Innovative small-scale biogas plants, including upgrading solutions to affordable biomethane, are necessary to tap into the spatially distributed potentials of organic waste. This research identified and assessed novel small-scale technologies before...

  • Article
  • Open Access
21 Citations
2,924 Views
17 Pages

To explore the relationship between consumption upgrading and agricultural green total factor productivity in the context of green and high-quality development of agriculture in China. Based on the construction of a composite index of consumption upg...

  • Communication
  • Open Access
9 Citations
4,926 Views
8 Pages

Acetic Acid/Propionic Acid Conversion on Metal Doped Molybdenum Carbide Catalyst Beads for Catalytic Hot Gas Filtration

  • Mi Lu,
  • Andrew W. Lepore,
  • Jae-Soon Choi,
  • Zhenglong Li,
  • Zili Wu,
  • Felipe Polo-Garzon and
  • Michael Z. Hu

9 December 2018

Catalytic hot gas filtration (CHGF) is used to precondition biomass derived fast pyrolysis (FP) vapors by physically removing reactive char and alkali particulates and chemically converting reactive oxygenates to species that are more easily upgraded...

  • Article
  • Open Access
2 Citations
1,968 Views
17 Pages

5 September 2023

This paper considers the two control zones policy implemented in 1998 in China as a quasi-natural experiment, examines the impact of environmental regulation on the upgrading of urban industrial structure by constructing a DID model, and tests the he...

  • Article
  • Open Access
15 Citations
13,824 Views
15 Pages

11 September 2020

Beef production in Kenya is the forte of pastoralists and large-scale ranches in the Arid and Semi-Arid areas. Cross sectional data was collected from 67 pastoralists and seven large-scale ranches, selected through multistage stratified sampling. Com...

  • Article
  • Open Access
10 Citations
7,107 Views
23 Pages

1 June 2024

Urbanization is key to advancing national modernization and regional socioeconomic sustainable development. This paper empirically investigates the impact of urbanization on industrial transformation and upgrading in early 20th-century China, based o...

  • Review
  • Open Access
73 Citations
9,441 Views
28 Pages

24 August 2015

With the growing demand for energy and the depletion of conventional crude oil, heavy oil in huge reserve has attracted extensive attention. However, heavy oil cannot be directly refined by existing processes unless they are upgraded due to its compl...

  • Article
  • Open Access
17 Citations
5,225 Views
23 Pages

How Population Aging Affects Industrial Structure Upgrading: Evidence from China

  • Xiao Shen,
  • Jingbo Liang,
  • Jiangning Cao and
  • Zhengwen Wang

The question of how to proactively respond to population aging has become a major global issue. As a country with the largest elderly population in the world, China suffers a stronger shock from population aging, which makes it more urgent to transfo...

  • Article
  • Open Access
1 Citations
2,492 Views
20 Pages

27 November 2024

The key strategic point for facilitating domestic circulation is to enhance and expand household consumption. Based on a survey of 1080 farming households in Hunan, Hubei, and Jilin Provinces, this study examines the impact of digital finance use on...

  • Review
  • Open Access
111 Citations
24,653 Views
24 Pages

Review on Biomass Pyrolysis with a Focus on Bio-Oil Upgrading Techniques

  • Daniel Lachos-Perez,
  • João Cláudio Martins-Vieira,
  • Juliano Missau,
  • Kumari Anshu,
  • Odiri K. Siakpebru,
  • Sonal K. Thengane,
  • Ana Rita C. Morais,
  • Eduardo Hiromitsu Tanabe and
  • Daniel Assumpção Bertuol

20 May 2023

This review provides insights into the current research on pyrolytic bio-oil obtained from different feedstock regarding upgrading techniques and applications such as energy, fuels, chemicals, and carbon materials. Raw bio-oil is not appropriate for...

  • Article
  • Open Access
2 Citations
3,655 Views
12 Pages

An OTA Upgrade Differential Compression Algorithm Based on Suffix Array Induced Sorting and BsDiff Methods

  • Xinrong Zhang,
  • Ying Wang,
  • Yanzhao Su,
  • Hengfeng Zuo,
  • Jin Huang and
  • Linghe Kong

8 January 2024

As the scale and complexity of software for industrial equipment increases, the risk of defects being introduced into the software also increases. Over-the-air (OTA) technology eliminates software defects by regularly updating and maintaining the sof...

  • Article
  • Open Access
22 Citations
4,412 Views
19 Pages

23 May 2019

In China, the government has made great achievements in mass higher education and intended to promote sustainable economic and social development. However, China still lacks innovation today and is trapped in its low-value-added industrial dilemma. T...

  • Review
  • Open Access
6 Citations
4,908 Views
14 Pages

21 October 2022

The COVID-19 pandemic, extreme temperatures and the Russia–Ukraine conflict have exposed deficiencies in global agricultural production capacity and governance systems, which left low-income countries and regions to face more severe food insecu...

  • Article
  • Open Access
590 Views
29 Pages

27 January 2026

This study examines how investment efficiency and risk jointly shape sustainable grain supply-chain upgrading. Using firm-level panel data for 25 listed grain supply-chain firms in China from 2015 to 2023, this study examines efficiency–risk st...

  • Article
  • Open Access
473 Views
31 Pages

Sustaining CyberWater-VisTrails: A Case Study in Software Upgrades and Reengineering

  • Drew Bieger,
  • Ahmed Sheba,
  • Adham M. Hassan,
  • Sherif Aly,
  • Ranran Chen,
  • Xu Liang and
  • Yao Liang

15 November 2025

This study focuses on the process of updating and upgrading a large-scale legacy software system to ensure its compatibility with modern computing environments. The evolution and maintenance of legacy software pose significant challenges in software...

  • Article
  • Open Access
7 Citations
4,124 Views
16 Pages

4 February 2023

In order to promote an upgrade of China’s emerging consumer market and build an international consumer center city, and after analyzing the heterogeneity of the household consumption patterns in 14 cities in the east, middle, and west of China...

  • Article
  • Open Access
27 Citations
7,657 Views
14 Pages

This study aims to analyze the development trend of the manufacturing industry transformation and upgrading in the Guangdong–Hong Kong–Macao Greater Bay Area (2008–2018). On the basis of synergetics, the order parameter method of factor analysis is u...

  • Article
  • Open Access
14 Citations
3,983 Views
23 Pages

4 July 2022

Based on the inter-provincial high-tech industry panel data from 2010 to 2016 in China, this study constructs static and dynamic panel models, respectively, to study the relationship between high-tech industry agglomeration and high-tech export produ...

  • Feature Paper
  • Article
  • Open Access
1,869 Views
11 Pages

28 August 2024

Organic solid waste treatment is crucial for enhancing environmental sustainability, promoting economic growth, and improving public health. Following our previous organic solid waste upgrading technique, a further two-step pilot-scale run, using sug...

  • Article
  • Open Access
2 Citations
1,393 Views
30 Pages

7 March 2025

To achieve the goal of building zero-waste cities, managing greenhouse gas (GHG) emissions generated from municipal solid waste (MSW) treatment is a critical step toward carbon neutrality. Waste produced by consumption activities constitutes an essen...

  • Article
  • Open Access
171 Views
21 Pages

16 March 2026

Under China’s carbon peaking and carbon neutrality goals, its photovoltaic (PV) sector is transitioning from scale expansion to quality-oriented growth, where intelligent upgrading is essential to improve efficiency, safety, and O&M digital...

  • Article
  • Open Access
15 Citations
3,687 Views
14 Pages

Numerical and Experimental Methods for the Assessment of Wind Turbine Control Upgrades

  • Davide Astolfi,
  • Francesco Castellani,
  • Francesco Berno and
  • Ludovico Terzi

16 December 2018

Megawatt-scale wind turbine technology is nowadays mature and, therefore, several technical improvements in order to optimize the efficiency of wind power conversion have been recently spreading in the industry. Due to the nonstationary conditions to...

  • Article
  • Open Access
5 Citations
1,979 Views
25 Pages

7 June 2024

Digital trade (DT), a key component of today’s digital economy, is pivotal in attaining “carbon neutrality and carbon peaking”, essential for low-carbon and high-quality growth. This study delves into the intermediary role of carbon...

  • Review
  • Open Access
27 Citations
8,416 Views
21 Pages

Biogas Upgrading Using a Single-Membrane System: A Review

  • Wirginia Tomczak,
  • Marek Gryta,
  • Monika Daniluk and
  • Sławomir Żak

In recent years, the use of biogas as a natural gas substitute has gained great attention. Typically, in addition to methane (CH4), biogas contains carbon dioxide (CO2), as well as small amounts of impurities, e.g., hydrogen sulfide (H2S), nitrogen (...

  • Article
  • Open Access
23 Citations
4,742 Views
19 Pages

12 October 2023

Industrial optimization is needed as China’s economy moves toward high-quality growth. The construction of new infrastructure, driven by new development concepts and patterns, facilitates industrial optimization. This study aims to explore the...

  • Article
  • Open Access
11 Citations
2,814 Views
22 Pages

13 May 2023

This paper examines the effect of new urbanization on high-quality economic development in Northeast China, focusing on three aspects: urban factor aggregation, internal division of labor, and scale effect. A panel mediated and moderated effects mode...

  • Article
  • Open Access
46 Citations
7,902 Views
18 Pages

Techno-Economic Assessment of Biological Biogas Upgrading Based on Danish Biogas Plants

  • Néméhie Lawson,
  • Merlin Alvarado-Morales,
  • Panagiotis Tsapekos and
  • Irini Angelidaki

8 December 2021

Biological biogas upgrading with H2 derived from excess renewable electricity was modeled and simulated in PROII® (AVEVA Group plc, Cambridge, UK). An economic analysis was performed for a biogas plant processing 100,000 tons of biomass (substrat...

  • Article
  • Open Access
48 Citations
7,878 Views
17 Pages

Wind Turbine Power Curve Upgrades

  • Davide Astolfi,
  • Francesco Castellani and
  • Ludovico Terzi

19 May 2018

Full-scale wind turbine is a mature technology and therefore several retrofitting techniques have recently been spreading in the industry to further improve the efficiency of wind kinetic energy conversion. This kind of interventions is costly and, f...

  • Article
  • Open Access
1 Citations
1,275 Views
20 Pages

Research on the Variation Laws of In Situ Combustion in Heavy Oil Reservoirs with Different Oil Saturations

  • Fajun Zhao,
  • Shun Zhu,
  • Changjiang Zhang,
  • Zian Yang,
  • Mingze Sun and
  • Hong Zhang

7 January 2025

This study investigates the behavior of heavy oil reservoirs under varying oil saturation conditions through laboratory-scale in situ combustion (ISC) physical simulation experiments. The research focuses on the propagation stability of the combustio...

  • Article
  • Open Access
20 Citations
5,128 Views
15 Pages

Spatial Patterns of Urban Wastewater Discharge and Treatment Plants Efficiency in China

  • Min An,
  • Weijun He,
  • Dagmawi Mulugeta Degefu,
  • Zaiyi Liao,
  • Zhaofang Zhang and
  • Liang Yuan

With the rapid economic development, water pollution has become a major concern in China. Understanding the spatial variation of urban wastewater discharge and measuring the efficiency of wastewater treatment plants are prerequisites for rationally d...

  • Article
  • Open Access
566 Views
22 Pages

14 January 2026

Grounded in the United Nations Sustainable Development Goal 4 (SDG4), specifically addressing the urgent need to increase relevant skills for decent work (Target 4.4) while ensuring inclusive access and quality (Targets 4.3, 4.5, 4.c), this study dev...

  • Systematic Review
  • Open Access
2,093 Views
18 Pages

Clinical Scores of Peripartum Patients Admitted to Maternity Wards Compared to the ICU: A Systematic Review and Meta-Analysis

  • Jennifer A. Walker,
  • Natalie Jackson,
  • Sudha Ramakrishnan,
  • Claire Perry,
  • Anandita Gaur,
  • Anna Shaw,
  • Saad Pirzada and
  • Quincy K. Tran

18 July 2025

Background/Objectives: Hospitalized peripartum patients who later decompensate and require an upgrade to the intensive care unit (ICU) may have an increased risk for poor outcomes. Most of the literature regarding the need for ICU involves Modified E...

  • Article
  • Open Access
29 Citations
8,571 Views
29 Pages

Strategic Slum Upgrading and Redevelopment Action Plan for Jammu City

  • Majid Farooq,
  • Fayma Mushtaq,
  • Gowhar Meraj,
  • Suraj Kumar Singh,
  • Shruti Kanga,
  • Ankita Gupta,
  • Pankaj Kumar,
  • Deepak Singh and
  • Ram Avtar

12 December 2022

Rapid urbanization has led to the emergence of slums in many developing and industrialized nations. It degrades the quality of life and burdens the urban amenities resulting in uneven distribution of slums. The majority of people in the developing wo...

  • Article
  • Open Access
8 Citations
5,979 Views
15 Pages

Process Simulation and Economic Evaluation of Bio-Oil Two-Stage Hydrogenation Production

  • Xiaoyuechuan Ma,
  • Shusheng Pang,
  • Ruiqin Zhang and
  • Qixiang Xu

18 February 2019

Bio-oil hydrogenation upgrading process is a method that can convert crude bio-oil into high-quality bio-fuel oil, which includes two stages of mild and deep hydrogenation. However, coking in the hydrogenation process is the key issue which negativel...

  • Feature Paper
  • Article
  • Open Access
85 Citations
17,347 Views
17 Pages

Reversible Heat Pump–Organic Rankine Cycle Systems for the Storage of Renewable Electricity

  • Sebastian Staub,
  • Peter Bazan,
  • Konstantinos Braimakis,
  • Dominik Müller,
  • Christoph Regensburger,
  • Daniel Scharrer,
  • Bernd Schmitt,
  • Daniel Steger,
  • Reinhard German and
  • Jürgen Karl
  • + 4 authors

25 May 2018

Storage of electricity from fluctuating renewable energy sources has become one of the predominant challenges in future energy systems. A novel system comprises the combination of a heat pump and an Organic Rankine Cycle (ORC) with a simple hot water...

  • Feature Paper
  • Article
  • Open Access
14 Citations
2,761 Views
14 Pages

23 October 2019

A full scale lab prototype of an adsorptive heat transformer (AHT), consisting of two adsorbers, an evaporator, and a condenser, was designed and tested in subsequent cycles of heat upgrading. The composite LiCl/SiO2 was used as an adsorbent with met...

  • Review
  • Open Access
14 Citations
6,526 Views
17 Pages

The use of whole-cell biocatalysts in microbial cell factories is of great interest to produce added-value compounds. Through large-scale fermentative processes, which use secondary raw materials as substrates, it is possible to recycle and upgrade a...

  • Feature Paper
  • Article
  • Open Access
4 Citations
2,805 Views
20 Pages

Role of the Polar Proportion of Compound Collectors in Low-Rank Coal Flotation Upgrading: Insights from the Molecular Scale

  • Junling Liu,
  • Xicheng Bao,
  • Yesheng Hao,
  • Jincheng Liu,
  • Yulong Cheng,
  • Rui Zhang,
  • Yaowen Xing,
  • Xiahui Gui,
  • Jihui Li and
  • Budeebazar Avid

7 April 2023

The compound collector, composed of polar and nonpolar parts, is a current research hotspot in low-rank coal (LRC) flotation because of its outstanding flotation efficiency and cost-effectiveness. However, the selection of compound proportions lacks...

  • Article
  • Open Access
4 Citations
1,750 Views
19 Pages

Biomethane production via biogas upgrading is regarded as a future renewable gas, further boosting the biogas economy. Moreover, when upgrading is realized by the biogas CO2 conversion to CH4 using surplus renewable energy, the process of upgrading b...

  • Article
  • Open Access
7 Citations
4,636 Views
14 Pages

27 December 2022

The quest for improved heterogeneous catalysts often leads to sophisticated solutions, which are expensive and tricky to scale up industrially. Herein, the effort to upgrade the existing inorganic nonmetallic materials has seldom been prioritized by...

  • Article
  • Open Access
63 Citations
7,292 Views
21 Pages

2 March 2022

The digital economy (DE) plays a crucial role in green innovation (GI) and green development as a new economic form. Based on the panel data of 274 Chinese prefecture-level cities from 2011 to 2019, this paper constructs a comprehensive DE index and...

  • Feature Paper
  • Article
  • Open Access
29 Citations
6,959 Views
21 Pages

Simulation of Full-Scale Rockfall Tests with a Fragmentation Model

  • Gerard Matas,
  • Nieves Lantada,
  • Jordi Corominas,
  • Josep Gili,
  • Roger Ruiz-Carulla and
  • Albert Prades

In this paper, we present the upgraded version of RockGIS, a stochastic program for the numerical simulation of rockfalls and their fragmentation, based on a fractal model. The code has been improved to account for a range of fragmentation scenarios,...

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