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901 articles for “challenges.”
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Synthetic Studies on Fused Benzodiazepines: A Class of Medicinally Privileged Heterocycles
Abstract: 1,4-Benzodiazepine is an important nitrogen heterocyclic scaffold because of its presence in various natural products, drugs and biologically active molecules. Henceforth, it is also known as privileged heterocycle in the field of medicinal to synthetic organic chemistry. Reactions towards the synthesis of five- and six- membered heterocycles are very easy and facile. On the other hand, synthesis of medium ring heterocycles is more difficult because of the thermodynamic limitations. Thus …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 2, 2018 · pp. 44–59 Read article
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SYNTHESIS OF NICOTINE CORE UNIT OF 2-NITRO-3-PHENYLPROPAN-1-OL FROM BAYLIS-HILLMAN ADDUCTS DERIVED FROM NITRO OLEFINS.
Abstract: The Baylis-Hillman adducts derived from nitroolefins have been conveniently transformed into 2- nitro-3-phenylpropan-1-ol via simple reaction condition. These compounds have been demonstrated for the synthesis of reduction olefin is highly biological reactive compounds. This novel nitro derivative of the BH adduct was simply treated with mole percentage of iron and acetic acid in reactive condition. Hence this novel nicotine core unit compounds were very intrusting and new opportunities for the …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 2, 2021 · pp. 26–30 Read article
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Deciphering Foam: Exploring Antifoaming Agents and Their Mechanism
Abstract: Antifoaming agents are critical additives employed in industrial processes to counter foam formation, which can hinder efficiency and cause equipment damage. These agents, available in various formulations like silicone-based, mineral oil-based, and polyethylene glycol-based, are selected based on specific foam properties and operating conditions. Choosing the right antifoam agent is crucial, with silicone-based ones often preferred for their stability and effectiveness across different pH levels and temperatures. Conversely, mineral oil-based …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 2, 2023 · pp. 32–36 Read article
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A Vision of Energy Scenario in India
Abstract: India is a developing country with its population increasing at an alarming rate. It has 29 different states and 7 union territories. Owing to its huge population size, fulfilling the energy requirements of its people is a challenging task for India. Several energy sources are available that helps our country in achieving this task. Here is a brief overview of the energy scenario in last 10-15 years.
Published in International Journal of Renewable Energy and its Commercialization · Vol. 2, Issue 2, 2016 · pp. 25–26 Read article
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Electrochemical CO2 Reduction on Metal Electrodes
Abstract: Carbon dioxide is a probable carbon resource plentiful on earth. It is also a greenhouse gas with a rapidly increasing atmospheric concentration during the last two centuries. Carbon dioxide can be electrochemically reduced to useful products under mild conditions. However, the energy conversion efficiency is low that, may discourage practical application of CO2 reduction in the very near future. However, the significance of the CO2 reduction will be re-evaluated in …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 14–15 Read article
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Performance Investigation of Single Sloped Solar Still Using Sand Beds
Abstract: Although more than 2-3rd of the earth is covered with water were less than 1% of it (freshwater) is in humans, plants & animals reach for their survival. The demand in fresh water for drinking, agriculture & industry largely exceeds the amount that fresh sources can meet. Access to safe/fresh water is a challenge in many communities in developing countries. Among the available purification technologies solar powered distillation system has …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 1, 2020 · pp. 30–40 Read article
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A Generic Assessment of Commercial Battery based Energy Storage Projects Round the World
Abstract: The importance of battery based electrical energy storage projects is on the rise globally, especially in conjunction with the boom in renewable energy technology deployment all over the world. A number of large scale battery energy storage projects have already been deployed and several more are in the pipeline. Along with it, research and development activities on novel battery chemistries are being actively pursued. This work aims to present major …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 1–9 Read article
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An overview of current activities in commercial deployment of hydrogen energy projects around the world
Abstract: Hydrogen energy systems have been proposed as one of the major components of a decarbonized, clean and sustainable energy system of the future, which will also include renewables, nuclear energy and biomass energy forms. Hydrogen production, storage, distribution and re-conversion technologies are essential components of this value chain. This study looks at some commercial level technologies available and projects deployed round the world for ushering in hydrogen energy systems on …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 16–25 Read article
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Energy resources of Pakistan, Issues and crisis
Abstract: Planet has no fair distribution of energy sources. The energy sector needs to undergo a transition from fossil fuel to renewable energies and energy efficient technology to tackle global challenges.Continued economic and human growth depends on oil. In today’s existence, energy is so important that one can't even existence without it. All our acts are energy dependent. Electricity makes a big contribution to the socioeconomic progress and the nation’s national …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 26–42 Read article
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Strategies for Electronic Wastes Management for Sustainable and Green Environment in Nigeria
Abstract: Adequate strategies need to be put in place for electrical and electronic waste management, renewable energy commercialization, green societies and sustainable development in Nigeria. This paper examined handling, disposal and management of electronic waste in Nigerian environment. Methodology adopted includes literature reviews of issues on this subject matter, specific site inspection, surveys and secondary data from users and industries with massive electronic waste. It has been discovered that these wastes …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 2, 2021 · pp. 38–46 Read article
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Smart Innovation for Sustainable & Green
Abstract: Provide information on new technologies enhancement that are changing how societies look. To establish sustainable, green communities during or beyond the pandemic era, place an emphasis on inventive technical advancement. As we know the technology is developing day by day, every day we find a new technology in our daily life. So, in this paper we are going to present all the helpful initiative ideas which reduce the global warming. …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 8, Issue 1, 2022 · pp. 9–15 Read article
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Oxidative Desulfurization of Petroleum
Abstract: One of the most successful desulfurization procedures for the creation of ultra-low sulphur import fuels is oxidative desulfurization, which converts aromatic sulfur-containing molecules into sulfone counterparts before being extracted. Oxidative desulfurization processes using graphene oxide are of great interest for fuel sulfur removal. Its technique of desulfurization in reactions catalyzed was thoroughly detailed in this review, along with graphene’s function as a supported catalyst, the findings of research on oxidative …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 2, 2022 · pp. 1–4 Read article
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Using Pavement Automated Monitoring System in Prioritization of Maintenance Decisions
Abstract: The road transportation system greatly affects the development of economy and social activities for the country. However, pavement maintenance and rehabilitation may be extremely costly and require a lot of funds and resources. Therefore, it is essential to spend these funds in an optimal way. In recent years, the major challenge that have faced most of highway management agencies in Iraq is how to preserve the road network at an …
Published in International Journal of Construction Engineering and Planning · Vol. 1, Issue 1, 2015 · pp. 1–13 Read article
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Identifying and Assessing the Usefulness and Validity of 6D and 7D BIM in Construction Practices
Abstract: Building information modeling (BIM) is a unified practice using coordinated and coherent representation software proficiently running in various formats (from 3D to 7D) to perk up overall project management. BIM can be executed ahead of the planning and designing stage of project, covering the complete building life cycle, along with the procedures involved in facility management and sustainability. This paper critically reviews the application of 6D and 7D BIM in …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 2, 2017 · pp. 22–31 Read article
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Analysis and Design of Multi-Storey (G+2) Building
Abstract: The main objective of this research paper is to provide an opportunity to consolidate and update the practical and theoretical knowledge of engineering in the actual field condition and habituate to work in different environment with different people. The cultivation of professional ability for structural engineering students is very important to help them meet the challenges that await them in the fast-changing world. In this Paper we are supposed to …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 27–36 Read article
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EFFECT OF SUPERVISION ON PRODUCTIVITY OF CONSTRUCTION INDUSTRY IN NIGERIA
Abstract: Poor supervision in the workplace has been identified to be among the primary obstacles to achieving potential successes by an organization. Insufficient direction is thought not only to be the major causes of revise but also resulted in low productivity, poor safety, lesser working conditions, and little quality of construction industry end product. Also lack of effective supervision is seen as an inevitable feature of the construction process which has …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 2, 2018 · pp. 22–29 Read article
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Utilization of Advance Geopolymer in Concrete: A Review
Abstract: Climate change has several adverse impacts like changes in weather, untimely rains, depleting water, droughts, flash floods, acute and early summer and chilling winter. Equally, another bigger challenge to the society is foul smell whether it is river, pond, drain, public toilets or garbage dump yards. It is due to emission of hydrogen sulphide, methane and other toxic gases. Methane in pure form does not create any foul smell, however …
Published in International Journal of Construction Engineering and Planning · Vol. 7, Issue 2, 2021 · pp. 21–28 Read article
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Procurement and Deployment of Equipment for Contracts in Civil Engineering Construction
Abstract: Many contracts have suffered a lot of delays and have faced challenges due to procurement-related matters and inadequate manpower to handle equipment for optimal performance. This study was aimed at the procurement of equipment and utilization of machines in civil engineering contracts. Methodology is basically site visitation, literature review and discussion with engineers, experts and workers on site. Parameters are liable for the procurement of materials and utilizing their lead …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 2, 2022 · pp. 29–37 Read article
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Projects in Accelerated Conditions
Abstract: The work aims in identifying the causes of delay in construction projects and the acceleration techniques adopted to overcome them. Questionnaire survey with experts from industry was used for generation of data and analyzed using Relative Importance Index and Spearmen’s Rank Correlation Coefficient test. On analyses it was noticed that project complexity, labour challenges and resequencing of activities are the main barriers impacting the timeline for construction projects. Various acceleration …
Published in International Journal of Construction Engineering and Planning · Vol. 9, Issue 2, 2023 · pp. 46–56 Read article
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Mechanical Behavior of Fly Ash Concrete A Critical Review
Abstract: Concrete structure is the most common all over the world. Cement is the major ingredient of concrete. Though the raw materials needed for manufacture of cement are available in most parts of the world, many countries have severe shortage of cement, although their needs are vast. The search for suitable substitute for cement, either partially or fully, has thus become a challenge for planning the development of many of the …
Published in International Journal of Concrete Technology · Vol. 7, Issue 1, 2021 · pp. 29–43 Read article