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Topic Review
Meso-Zeaxanthin
Meso-zeaxanthin (3R,3´S-zeaxanthin) is a xanthophyll carotenoid, as it contains oxygen and hydrocarbons, and is one of the three stereoisomers of zeaxanthin. Of the three stereoisomers, meso-zeaxanthin is the second most abundant in nature after 3R,3´R-zeaxanthin, which is produced by plants and algae. To date, meso-zeaxanthin has been identified in specific tissues of marine organisms and in the macula lutea, also known as the "yellow spot", of the human retina.
  • 1.9K
  • 02 Dec 2022
Biography
Alan Lightman
Alan Paige Lightman is an American physicist, writer, and social entrepreneur. He has served on the faculties of Harvard and Massachusetts Institute of Technology (MIT) and is currently professor of the practice of the humanities at MIT. He is widely known as the author of the international bestseller Einstein's Dreams. Einstein's Dreams has been adapted into dozens of independent theatrical pro
  • 1.9K
  • 06 Dec 2022
Topic Review
Non-Destructive Quality-Detection Techniques for Cereal Grains
Grain quality involves the appearance, nutritional, and safety attributes of grains. With the improvement of people’s living standards, problems pertaining to the quality of grains have received greater attention. Modern quality detection techniques feature unique advantages including rapidness, non-destructiveness, accuracy, and efficiency in detecting grain quality.
  • 1.9K
  • 09 Jan 2023
Topic Review
Soil Microorganisms on Plant Performance
The spatially heterogeneous distribution of soil nutrients is ubiquitous in terrestrial ecosystems and has been shown to promote the performance of plant communities, influence species coexistence, and alter ecosystem nutrient dynamics. Plants interact with diverse soil microbial communities that lead to an interdependent relationship (e.g., symbioses), driving plant community productivity, belowground biodiversity, and soil functioning.
  • 1.9K
  • 11 Jan 2023
Topic Review
Bioeffects of Piezoelectric Materials and Piezoelectric Nanomaterials
Piezoelectric materials have emerged as promising candidates for medical applications due to their unique piezoelectric properties, which enable stress-induced electric activation and can be triggered by external mechanical sources. Piezoelectric nanomaterials, which can be standalone materials or composites, exhibit unique physical properties such as electric field strength and dielectric constant, biological properties such as targeting and biocompatibility, chemical properties of composition and stability, etc. 
  • 1.9K
  • 16 May 2023
Topic Review
Structure and Properties of Graphene Quantum Dots
Graphene quantum dot (GQD) is a new type of carbon nanometer material. In addition to the excellent properties of graphene, it is superior due to the quantum limit effect and edge effect. Because of its advantages such as water solution, strong fluorescent, small size, and low biological toxicity, it has important application potential in various fields, especially in sensors and biomedical areas, which are mainly used as optical electrical sensors as well as in biological imaging and tumor therapy. In addition, GQDs have very important characteristics, such as optical and electrical properties. There are many preparation methods, divided into top-down and bottom-up methods, which have different advantages and disadvantages, respectively. In addition, the modification methods include heterogeneous doping, surface heterogeneity, etc. 
  • 1.9K
  • 17 Jan 2024
Topic Review
Bioclimatic Building Design
Bioclimatic building design emerges as a holistic approach to sustainable architecture that integrates the built environment with natural elements. Bioclimatic building design’s capacity to significantly reduce energy consumption, enhance occupant well-being, and shape sustainable behavior has been well documented in existing research. 
  • 1.9K
  • 21 Feb 2024
Topic Review
Air Addition in Hydraulic Turbines
The use of hydropower is rapidly increasing worldwide, however, achieving maximum efficiency in hydraulic turbines requires operating at the best efficiency point (QBEP). By mitigating the vortex phenomenon, one can reduce pressure pulsation amplitudes and therefore expand the range of stable operation of the hydroturbine. There are two basic approaches to surge mitigation, which are based on the operation turbine principle. The first one involves modifying the existing geometry through geometric optimization, seeking to improve performance over a wider range of operations by changing parametric dimensions. The second approach aims to reduce flow swirl and break up stagnant zones by injecting water or air into the flow.
  • 1.9K
  • 21 Jul 2023
Topic Review
Neurotropic Black Yeast Exophiala dermatitidis
The neurotropic and extremophilic black yeast Exophiala dermatitidis (Herpotrichellaceae) inhabits diverse indoor environments, in particular bathrooms, steam baths and dishwashers. It can grow at human body temperature, assimilate cyclic hydrocarbons and human neurotransmitters. Accordingly, they are capable to grow in artificial and natural environments, including synthetic/rubber hydrocarbon-rich materials. Their polymorphic nature allows them to survive environmental stress, such as UV radiation, high temperatures, pH fluctuations, low water activity and others. E. dermatitidis is known as extremely plastic which has evolutionarily led to adaptation on the human body. It causes numerous infections in almost all human organs, and may also be associated with Alzheimer’s disease.
  • 1.9K
  • 29 Oct 2020
Topic Review
Female Germ Cell Development
In the present era, infertility is one of the major issues which restricts many couples to have their own children. Infertility is the inability to achieve a clinical pregnancy after regular unprotected sexual intercourse for the period of one year or more. Various factors including defective male or female germ cell development, unhealthy and improper lifestyles, diseases like cancer and associated chemo-or-radiation therapies, congenital disorders, etc., may be responsible for infertility. Therefore, it is highly important to understand the basic concepts of germ cell development including primordial germ cell (PGC) formation, specification, migration, entry to genital ridges and their molecular mechanisms, activated pathways, paracrine and autocrine signaling, along with possible alteration which can hamper germ cell development and can cause adversities like cancer progression and infertility. Knowing all these aspects in a proper way can be very much helpful in improving our understanding about gametogenesis and finding possible ways to cure related disorders. 
  • 1.9K
  • 10 Jun 2021
Topic Review
LoRaWAN Communication Protocols
Long range wide area networks (LoRaWANs) have recently received intense scientific, research, and industrial interest. LoRaWANs play a pivotal role in Internet of Things (IoT) applications due to their capability to offer large coverage without sacrificing the energy efficiency and, thus the battery life, of end-devices. Most published contributions assume that LoRaWAN gateways (GWs) are plugged into the energy grid; thus, neglecting the network lifetime constraint due to power storage limitations. However, there are several verticals, including precision agriculture, forest protection, and others, in which it is difficult or even impossible to connect the GW to the power grid or to perform battery replacement at the end-devices. Consequently, maximizing the networks’ energy efficiency is expected to have a crucial impact on maximizing the network lifetime.
  • 1.9K
  • 10 Jun 2022
Topic Review
Management Strategies of Microplastics in Groundwater Environments
Microplastic contamination has become widespread in natural ecosystems around the globe as a result of the tremendous rise in plastic production over the past. However, microplastic pollution in marine and riverine habitats has received more attention than that of terrestrial environments or even groundwater. The most prevalent types of plastic detected in groundwater are polyethylene and polyethylene terephthalate, and fibers and fragments represent the most commonly found shapes. The vertical transportation of microplastics in agricultural soils can affect groundwater aquifer systems, which is detrimental to those who use groundwater for drinking as well as to microorganisms present in the aquifers.
  • 1.9K
  • 22 Jun 2022
Topic Review
AI and Self-Learning: Opportunities and Challenges
The integration of artificial intelligence (AI) and self-learning algorithms has revolutionized the field of machine learning. This research explores the opportunities, challenges, and risks associated with AI and self-learning, with a particular focus on the impact of different types of AI on self-learning. The research examines how AI algorithms are designed to learn from data and improve their performance over time with little or no human intervention. While AI and self-learning present significant opportunities for automation, efficiency, and innovation, they also pose challenges such as data privacy, security, and ethical concerns. The research provides several success stories of AI and self-learning in various industries and applications. Furthermore, the research outlines future directions for the development and implementation of AI and self-learning algorithms and provides recommendations for all involved parties.
  • 1.9K
  • 22 May 2023
Topic Review
Light-Based 3D Bioprinting
The emergence of additive manufacturing, commonly referred to as 3D printing, has led to a revolution in the field of biofabrication. Numerous types of 3D bioprinting, including extrusion bioprinting, inkjet bioprinting, and lithography-based bioprinting, have been developed and have played pivotal roles in driving a multitude of pioneering breakthroughs in the fields of tissue engineering and regenerative medicine.
  • 1.9K
  • 12 Dec 2023
Topic Review
Anthocyanin-Based Polymers for Healthcare Applications
Anthocyanins are a specific group of molecules found in nature that have recently received increasing attention due to their interesting biological and colorimetric properties that have been successfully applied in several fields such as food preservation and biomedicine. Meanwhile, the incorporation of anthocyanins into polymeric systems has become an interesting strategy to widen the applicability of these molecules and develop new smart and functional polymers in the above-cited areas. 
  • 1.9K
  • 14 Mar 2024
Topic Review
Wearable Airbags
Fall-related injury is a common cause of mortality among the elderly. Hip fractures are especially dangerous and can even be fatal. In this study, a threshold-based preimpact fall detection algorithm was developed for wearable airbags that minimize the impact of falls on the user’s body. Acceleration sum vector magnitude (SVM), angular velocity SVM, and vertical angle, calculated using inertial data captured from an inertial measurement unit were used to develop the algorithm. To calculate the vertical angle accurately, a complementary filter with a proportional integral controller was used to minimize integration errors and the effect of external impacts. In total, 30 healthy young men were recruited to simulate 6 types of falls and 14 activities of daily life. The developed algorithm achieved 100% sensitivity, 97.54% specificity, 98.33% accuracy, and an average lead time (i.e., the time between the fall detection and the collision) of 280.25 ± 10.29 ms with our experimental data, whereas it achieved 96.1% sensitivity, 90.5% specificity, and 92.4% accuracy with the SisFall public dataset. This paper demonstrates that the algorithm achieved a high accuracy using our experimental data, which included some highly dynamic motions that had not been tested previously.
  • 1.9K
  • 01 Nov 2020
Topic Review
Carbon Footprint Initiatives
One of the most significant environmental aspects is the issue of climate change due to carbon dioxide emissions generated by human activities. Given the importance of this topic, this paper gathers initiatives and methodologies that have been undertaken to calculate and reduce CO2 emissions and climate change effects. After studying these methodologies, their strengths and opportunities for further enhancement have been analyzed. 
  • 1.9K
  • 28 Jan 2022
Topic Review
Silicon Nanowires Synthesis by MACE
Silicon is the undisputed leader for microelectronics among all the industrial materials and Si nanostructures flourish as natural candidates for tomorrow’s technologies due to the rising of novel physical properties at the nanoscale. In particular, silicon nanowires (Si NWs) are emerging as a promising resource in different fields such as electronics, photovoltaic, photonics, and sensing. Despite the plethora of techniques available for the synthesis of Si NWs, metal-assisted chemical etching (MACE) is today a cutting-edge technology for cost-effective Si nanomaterial fabrication already adopted in several research labs. During these years, MACE demonstrates interesting results for Si NW fabrication outstanding other methods. A critical study of all the main MACE routes for Si NWs is here presented, providing the comparison among all the advantages and drawbacks for different MACE approaches. All these fabrication techniques are investigated in terms of equipment, cost, complexity of the process, repeatability, also analyzing the possibility of a commercial transfer of these technologies for microelectronics, and which one may be preferred as industrial approach. 
  • 1.9K
  • 23 Feb 2021
Topic Review
Monoterpenes as Anticancer Therapeutic Agents
Terpenes—a diverse group of secondary metabolites—constitute the largest class of natural products abundant in almost every plant species.
  • 1.9K
  • 17 May 2021
Topic Review
BRCA2 Variants of Uncertain Significance
Breast Cancer Susceptibility Gene 2 (BRCA2) is an essential protein that mediates the loading of RAD51 onto resected DNA breaks, a key step in HDR.
  • 1.9K
  • 07 Jun 2021
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