Article
Energy & Fuels
Sudhir Kumar Pathak, Ashish Nayyar, Varun Goel
Summary: Research shows that diesel engines can partially replace compressed natural gas to reduce NOx and smoke emissions; in dual fuel mode, the highest reduction rates for NOx and smoke can reach 21% and 18% respectively.
Article
Energy & Fuels
Miroslaw Karczewski, Grzegorz Szamrej, Janusz Chojnowski
Summary: The problem of global warming and rising oil prices is driving the implementation of solutions to reduce liquid fuel consumption and greenhouse gas emissions, including the use of natural gas as an energy source. This article presents the test results of a compressed natural gas (CNG) supply system installed in a used semi-truck, showing that the diesel/CNG-fueled engine can significantly reduce CO2 concentration but increase the concentration of other harmful gases.
Article
Thermodynamics
Sridhar Sahoo, Dhananjay Kumar Srivastava
Summary: Compressed natural gas (CNG) has gained widespread acceptance in the automobile industry due to its clean-burning properties. Direct injection (DI) CNG engines have been studied to increase engine efficiency through higher turbulent flame speed and rapid flame front propagation. This study examines the combustion behavior of DI CNG engines and compares it to port fuel injection (PFI) CNG and gasoline engines.
Article
Energy & Fuels
Mindaugas Melaika, Gilles Herbillon, Petter Dahlander
Summary: The study investigated the performance of gaseous fuels in a spark ignition engine, showing that they can improve engine efficiency, reduce emissions, and provide stable combustion. The results indicated that DI-CNG combustion had the best performance among different injection systems, with lower particulate emissions.
Article
Energy & Fuels
Xiaole Liu, Shaohua Liu, Lizhong Shen, Yuhua Bi, Longjin Duan
Summary: Due to its zero carbon emissions and renewable advantages, hydrogen has great prospects as a renewable form of energy. This experiment aims to study the influence of hydrogen substitution rate on engine combustion and emission under different loads, as well as the impact of EGR technology or main injection timing on the engine's capability under high load and high hydrogen substitution rate.
Article
Thermodynamics
Suja Thangaraj, Nagarajan Govindan
Summary: This study investigates the combustion, performance and emission characteristics of water electrolyzed hydroxyl gas and compressed natural gas in a diesel engine. The results show that the multi fuel mode reduces NOx emission and smoke density compared to pure diesel operation, and improves fuel economy and power through better combustion.
Article
Environmental Studies
Habib Gurbuz, Selim Demirturk, Ismail Hakki Akcay, Husameddin Akcay
Summary: This paper investigates the impact of ethanol addition and hot exhaust gas recirculation on engine performance, exhaust emissions, and air-pollution damage-cost in a dual-fuel diesel engine. It was found that adding 40% ethanol at 1400 rpm yielded the greatest improvement in engine performance and environmental factors.
ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Physical
J. Ramachander, S. K. Gugulothu, G. Ravikiran Sastry, M. Siva Surya
Summary: This study investigates the combustion, performance, and emission characteristics of a CRDI diesel engine assisted CNG dual fuel research engine under different conditions. Response surface methodology is used to predict optimal input parameters, resulting in the optimal combination of performance and emission parameters. A regression model is developed using statistical tests, which shows good accuracy and fits well with the data.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Arkadiusz Jamrozik, Wojciech Tutak, Karol Grab-Rogalinski
Summary: The study found that replacing part of the diesel with propanol can increase the rate of heat release and pressure increase in a compression ignition engine, but it also leads to an increase in ignition delay time and a shortened duration of combustion.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Zhonghang Liu, Jianbin Luo, Yajuan Pan, Jian Li, Longjie Li, Xin Wei, Hongxiang Xu, Yuanhao Tie, Chengtao Zhang, Dayong Yang
Summary: This study used a hybrid approach of RSM-NSGA II-TOPSIS to perform multi-objective optimization of a dual-fuel engine with hydrogen addition. By establishing a CFD model and a chemical reaction mechanism, and using regression model and genetic algorithm for optimization, the optimal solution was selected using the TOPSIS decision method.
Article
Engineering, Multidisciplinary
Arnab Roy, Yuvrajsinh Dabhi, Hardik Brahmbhatt, Sajan K. Chourasia
Summary: The study successfully reduced engine emissions and improved engine performance by using dual biodiesel emulsified fuel. Test fuel with a 5% water concentration showed the best results, outperforming diesel and other emulsified fuels in combustion and performance characteristics.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Prabhakar Sharma, Avdhesh Kr. Sharma, Deepanraj Balakrishnan, Arthi Manivannan, Wen Yi Chia, Mukesh Kumar Awasthi, Pau Loke Show
Summary: This study aimed to improve the emission and combustion parameters of a dual-fuel combustion engine by using biodiesel/diesel and producer gas as fuels, which resulted in reduced exhaust emissions and minimized environmental impact. The experimental data and Artificial Neural Network prediction model confirmed the effectiveness of this hybrid fuel system.
Review
Energy & Fuels
S. T. P. Purayil, Mohammad O. Hamdan, S. A. B. Al-Omari, M. Y. E. Selim, E. Elnajjar
Summary: Rapid depletion of conventional fossil fuels and increasing environmental concern have led to an urgent need for research on finding an alternative fuel with minimal environmental impacts. Hydrogen is considered as an important fuel for the future, as it addresses the aforementioned pressing issues. This review critically analyzes the combustion performance, emission, and cyclic variation characteristics of a hydrogen-gasoline dual fuel engine. According to scientific literature, hydrogen-gasoline dual fuel engines exhibit good thermal efficiency at low and partial loads, but their performance deteriorates at high loads.
Article
Environmental Sciences
A. Vijin Prabhu, A. Avinash, Kathirvel Brindhadevi, Arivalagan Pugazhendhi
Summary: By preheating the biogas-air mixture, it is possible to increase the efficiency and power of the engine, while reducing fuel consumption. However, it can also lead to an increase in CO2 and NOx emissions, but can reduce HC and CH4 emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Energy & Fuels
Zengqiang Zhu, Zhiqiang Mu, Yanju Wei, Ruiheng Du, Shenghua Liu
Summary: The performance of a heavy-duty pure methanol engine was evaluated and compared to the original natural gas engine through experiments. The results showed that the pure methanol engine had higher brake thermal efficiency and better tolerance to exhaust gas recirculation. Lower NOx and CO emissions were observed in the pure methanol engine, but higher HC emissions were recorded.
Article
Energy & Fuels
Roshan Raman, Naveen Kumar
Summary: This study investigates the effect of induction length on acetylene fueled CI engine. The results show that the optimum length for acetylene induction is 50 cm, which provides better performance in terms of load, combustion efficiency, and exhaust emissions.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Green & Sustainable Science & Technology
Ankit Sonthalia, Naveen Kumar, Mukul Tomar, Varuvel Edwin Geo, Subramanian Thiyagarajan, Arivalagan Pugazhendhi
Summary: Energy is crucial for the economic development of any country, but developing countries often rely on imported oil. However, the fluctuating oil prices and environmental concerns associated with fossil fuels are major issues. To address these problems, developing countries have started investing in solar and wind power, and are exploring hydrogen and methanol as future energy resources.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2023)
Article
Chemistry, Physical
Jeetendra Singh, Debapriya Chakraborty, Naveen Kumar
Summary: The study shows that increasing the channel length improves the performance of the DL-NT-FET, but increasing the radius of the nanotube or temperature has the opposite effect. In particular, increasing temperature significantly increases I-OFF, while causing a slight degradation in I-ON.
Article
Chemistry, Physical
Kosheen Wighmal, Giridhar Peddi, Apoorva, Naveen Kumar, S. Intekhab Amin, Sunny Anand
Summary: The paper discusses the utilization of Tunnel Field Effect Transistors for biomaterial detection as a biosensor, proposing a 3-D Doping less Nanotube Tunnel Field Effect Transistor device. Different dielectric values were analyzed to study their impact on device performance. Through the use of Charge Plasma Technique for shaping the source and drain, simplification in fabrication was achieved while improving device characteristics.
Article
Psychiatry
Prakyath R. Hegde, Guru S. Gowda, Bhavika Vajawat, Vinay Basavaraju, Sydney Moirangthem, Channaveerachari Naveen Kumar, Suresh Bada Math
Summary: This study examined medication delivery practices adopted by caregivers for patients with severe mental illness (SMI) in India. Covert administration of medication (CoAdM) was found to be a common practice, with 32.0% of SMI patients having received CoAdM at some point. Other strategies used by caregivers included pleading, lying, and threatening. Male gender, absent insight, and poor medication adherence were significantly associated with CoAdM in the past year. Caregivers perceived significant improvements in various aspects of patients' lives after CoAdM, including self-care, interpersonal relationships, work, family functioning, problem behaviors, and dependency.
INTERNATIONAL JOURNAL OF SOCIAL PSYCHIATRY
(2023)
Article
Biochemistry & Molecular Biology
Naveen Kumar, Vijay Kumar, Piyush Anand, Vinay Kumar, Ashish Ranjan Dwivedi, Vinod Kumar
Summary: This article discusses various hypotheses for Alzheimer's disease (AD) and the effectiveness of multi target directed ligands (MTDLs) in treating the disease. Different chemical scaffolds and their synthetic strategies are described, along with the identification of important functionalities that have the potential to bind to multiple targets. The study identifies important leads with MTDL characteristics that have the potential to be developed into drug candidates for the effective treatment of AD.
BIOORGANIC & MEDICINAL CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Naveen Kumar, Rajesh Dagupati, Jiseok Lim, Jungwook Choi
Summary: Ravishing red luminescent Eu3+-activated SnO2 quantum dot (QD) phosphors were synthesized and characterized. The QDs showed enhanced red emission under UV excitation and demonstrated potential applications in latent fingerprint visualization and biological labeling.
CERAMICS INTERNATIONAL
(2022)
Article
Psychology
S. Visalakshi, V Prateek, S. Kamaldeep, Patley Rahul, Sharad Philip, B. Vinay, N. Manjunatha, C. K. Naveen, Suresh Bada Math
INDIAN JOURNAL OF PSYCHOLOGICAL MEDICINE
(2023)
Article
Health Policy & Services
P. Lakshmi Nirisha, Barikar C. Malathesh, Nithesh Kulal, Nisha R. Harshithaa, Ferose Azeez Ibrahim, Satish Suhas, N. Manjunatha, Channaveerachari Naveen Kumar, Rajani Parthasarathy, Adarsha Alur Manjappa, Jagadisha Thirthalli, Prabhat Kumar Chand, Sanjeev Arora, Suresh Bada Math
Summary: Mental health task shifting is a potential way to address the treatment gap for mental illness. In this study, the impact of hybrid training of grassroot level health workers was evaluated. The results showed that mentoring ASHAs through online sessions had a more positive effect on their knowledge, attitude, and practices in mental health compared to traditional one-day training.
COMMUNITY MENTAL HEALTH JOURNAL
(2023)
Article
Psychology
Manjunatha B. Kondapura, Narayana Manjunatha, Anil Kumar Mysore Nagaraj, Samir Kumar Praharaj, Channaveeraachari Naveen Kumar, Suresh Bada Math, Girish N. Rao
Summary: This study examined the cost of illness and disability of patients with common mental disorders in India. The findings indicate that these disorders result in a significant financial burden, predominantly due to indirect costs, and are associated with a mild level of disability.
INDIAN JOURNAL OF PSYCHOLOGICAL MEDICINE
(2023)
Article
Green & Sustainable Science & Technology
Kaushik Paul, Vineet Shekher, Naveen Kumar, Vivek Kumar, Manoj Kumar
Summary: This paper proposes a modified whale optimization algorithm for solving the power system congestion cost problem by integrating wind farms. The algorithm incorporates bus sensitivity factor and wind availability factor to determine the optimal placement of wind farms. Two correction factors are introduced to overcome the premature convergence issue of the original whale optimization algorithm. The results show that the proposed algorithm outperforms other optimization techniques in terms of congestion cost, bus voltage magnitudes, system losses, and computational time.
PROCESS INTEGRATION AND OPTIMIZATION FOR SUSTAINABILITY
(2022)
Article
Chemistry, Multidisciplinary
Debobroto Sensharma, Benjamin H. Wilson, Naveen Kumar, Daniel J. O'Hearn, Michael J. Zaworotko
Summary: This study reports a series of HUMs that can be fine-tuned in structure and properties through the variation of inorganic pillars. Gas sorption experiments demonstrate that these HUMs exhibit high selectivity for gas separation.
CRYSTAL GROWTH & DESIGN
(2022)
Review
Psychology
Bhavika Vajawat, Channaveerachari Naveen Kumar, Prakyath Hegde, Sydney Moirangthem, Vinay Basavaraju, Vasuki Prathyusha, Binukumar Bhaskarapillai, Suresh Bada Math, Pratima Murthy
Summary: The relationship between imprisonment and mental illness is bidirectional. A study conducted on male inpatients under judicial custody with charges of homicide found that the clinical outcomes of prisoners with mental illness seem promising, subject to the seamless availability of services.
INDIAN JOURNAL OF PSYCHOLOGICAL MEDICINE
(2023)
Article
Psychology
Swati Ravindran, Prabhu Jadhav, Sharad Philip, Chethan Basavarajappa, Channaveerachari Naveen Kumar, Jagadisha Thirthalli, Thanapal Sivakumar
Summary: This study analyzed the assessment of disability due to mental illness in India and found that it is feasible for India to shift from using IDEAS to WHODAS. After removing the influence of duration, both hospital and community-based samples show a cutoff score of 24.
INDIAN JOURNAL OF PSYCHOLOGICAL MEDICINE
(2023)
