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Topic Review
Ginger and Iron Deficiency Anaemia
Ginger (Zingiber officinale) is rich in natural polyphenols and may potentially complement oral iron therapy in treating and preventing iron deficiency anaemia (IDA). Ginger possesses several health-promoting properties and has been traditionally used in East Asia to ease fatigue and weaknesses. Contemporarily, ginger is considered a functional food that can confer health benefits beyond its nutritional values for preventing, managing, or treating disease. As a rich source of natural polyphenols, ginger may potentially complement oral iron therapy in treating IDA and be a supportive dietary strategy for preventing IDA. 
  • 7.5K
  • 31 Oct 2022
Topic Review
Penn State Child Sex Abuse Scandal
The Penn State child sex abuse scandal concerned allegations and subsequent convictions of child sexual abuse committed by Jerry Sandusky, an assistant coach for the Penn State Nittany Lions football team, over a period of at least fifteen years. The scandal began to emerge publicly in March 2011 and broke in early November 2011 when Sandusky was indicted on 52 counts of child molestation, stemming from incidents that occurred between 1994 and 2009. Sandusky was ultimately convicted on 45 counts of child sexual abuse on June 22, 2012, and was sentenced to a minimum of 30 years and a maximum of 60 years in prison. Additionally, three Penn State officials – school president Graham Spanier, vice president Gary Schultz and athletic director Tim Curley – were charged with perjury, obstruction of justice, failure to report suspected child abuse, and related charges. The Penn State Board of Trustees commissioned an independent investigation by former FBI Director Louis Freeh, whose report stated that Penn State's longtime head football coach Joe Paterno, along with Spanier, Curley and Schultz, had known about allegations of child abuse by Sandusky as early as 1998, had shown "total and consistent disregard...for the safety and welfare of Sandusky's child victims", and "empowered" Sandusky to continue his acts of abuse by failing to disclose them.:14 Shortly after the scandal broke, Spanier resigned. The Board of Trustees terminated the contracts of Paterno and Curley. As a result of the scandal, the National Collegiate Athletic Association (NCAA) imposed sanctions on the Penn State football program: a $60 million fine, a four-year postseason ban, scholarship reductions, and a vacation of all victories from 1998 to 2011. These sanctions were considered to be among the most severe ever imposed on an NCAA member school. NCAA President Mark Emmert stated that the sanctions were levied "not to be just punitive, but to make sure the university establishes an athletic culture and daily mindset in which football will never again be placed ahead of educating, nurturing and protecting young people." The Big Ten Conference subsequently imposed an additional $13 million fine. The Paterno family retained former Attorney General Richard Thornburgh to conduct a review of the Freeh report, which concluded that the report constituted a "rush to injustice" that could not be relied upon and that Freeh's evidence fell "far short" of showing that Joe Paterno attempted to conceal the scandal, but rather that "the contrary is true". In January 2013, state senator Jake Corman and state treasurer Rob McCord sued the NCAA, seeking to overturn the Penn State sanctions on the basis that Freeh had been actively collaborating with the organization and that due process had not been followed. In November 2014, Corman released emails showing "regular and substantive" contact between Freeh's investigators and the NCAA, suggesting that Freeh's conclusions were orchestrated. As part of a settlement, the NCAA restored the 111 wins to Paterno's record on January 16, 2015. On March 25, 2017, Curley, Schultz, and Spanier pleaded or were found guilty of misdemeanor charges of child endangerment. All conspiracy charges against Curley and Schultz were dropped, and Spanier was acquitted of conspiracy, the charges central to Louis Freeh's allegation of a cover-up. In June 2017, all three were sentenced to jail terms, fines, and probation for the misdemeanors. Spanier was sentenced to four to twelve months in jail, a $7,500 fine, and two years of probation. Spanier's misdemeanor conviction was subsequently overturned on appeal.
  • 7.5K
  • 25 Oct 2022
Topic Review
Negawatt Power
Negawatt power is a theoretical unit of power representing an amount of electrical power (measured in watts) saved. The energy saved is a direct result of energy conservation or increased energy efficiency. The term was coined by the chief scientist of the Rocky Mountain Institute and environmentalist Amory Lovins in 1985, within the article, "Saving Gigabucks with Negawatts," where he argued that utility customers don’t want kilowatt-hours of electricity; they want energy services such as hot showers, cold beer, lit rooms, and spinning shafts, which can come more cheaply if electricity is used more efficiently. Lovins felt an international behavioral change was necessary in order to decrease countries' dependence on excessive amounts of energy. The concept of a negawatt could influence a behavioral change in consumers by encouraging them to think about the energy that they spend. A negawatt market can be thought of as a secondary market, in which electricity is allocated from one consumer to another consumer within the energy market. In this market, negawatts could be treated as a commodity. Commodities have the ability to be traded across time and space, which would allow negawatts to be incorporated in the international trading system. Roughly 10% of all U.S. electrical generating capacity is in place to meet the last 1% of demand and there is where the immediate efficiency opportunity exists. On March 15, 2011, the Federal Energy Regulatory Commission (FERC), the agency that regulates the U.S. electrical grid, approved a rule establishing the approach to compensation for demand response resources intended to benefit customers and help improve the operation and competitiveness of organized wholesale energy markets. This means that negawatts produced by reducing electrical use can demand the same market prices as real megawatts of generated electricity. The incentives for a negawatt market include receiving money, reduction of national energy dependency, and the local electricity deregulation within certain nations or states. As for the cost incentive, those who produce negawatts or simply conserve energy can earn money by selling the saved energy. The negawatt market could help nations or states obtain a deregulated electricity system by creating another market to purchase electricity from. The negawatt market also has two main drawbacks. Currently, there is no way to precisely measure the amount of energy saved in negawatts, and electricity providers may not want customers to use less energy due to the loss of profit.
  • 7.5K
  • 22 Nov 2022
Topic Review
COVID-19
Researchers present an overview of the current state of knowledge on the SARS-CoV-2 and COVID-19 pandemic. In addition to an overview of the epidemiological, clinical, and radiological features of SARS-CoV-2, researchers also summarize possible therapeutic options currently under investigation and the future outlook for the disease. Whereas the trials on SARS-CoV-2 genome-based specific vaccines and therapeutic antibodies are currently being tested, this solution is more long-term, as they require thorough testing of their safety. On the other hand, the repurposing of the existing therapeutic agents previously designed for other virus infections and pathologies happens to be the only practical approach as a rapid response measure to the emergent pandemic. The current pandemic emergency will be a trigger for more systematic drug repurposing design approaches based on big data analysis. Further on, regression analytical review is presented on the virological and evolutionary history of SARS-CoV viruses, indicating to the autoimmune pathogen.
  • 7.5K
  • 14 Jan 2024
Topic Review
Ground-Penetrating Radar in Soil Studies
Information on the spatiotemporal variability of soil properties and states within the agricultural landscape is vital to identify management zones supporting precision agriculture (PA). Ground-penetrating radar (GPR) and electromagnetic induction (EMI) techniques have been applied to assess soil properties, states, processes, and their spatiotemporal variability. 
  • 7.5K
  • 14 Jun 2023
Topic Review
Manimekalai
Manimekalai (Tamil: மணிமேகலை), by the poet Chithalai Chathanar, is one of The Five Great Epics of Tamil Literature according to later Tamil literary tradition. Manimekalai is a poem in 30 cantos. Its story is a sequel to another of the Five Great Epics, Silappatikaram, and tells the story of the daughter of Kovalan and Madhavi, who became a Buddhist Bikkuni.
  • 7.5K
  • 24 Oct 2022
Topic Review
Control Techniques in Photovoltaic Systems
Complex control structures are required for the operation of photovoltaic electrical energy systems. In this paper, a general review of the controllers used for photovoltaic systems is presented. This entry is based on the most recent papers presented in the literature. The control architectures considered are complex hybrid systems that combine classical and modern techniques, such as artificial intelligence and statistical models. The main contribution of this paper is the synthesis of a generalized control structure and the identification of the latest trends. The main findings are summarized in the development of increasingly robust controllers for operation with improved efficiency, power quality, stability, safety, and economics.
  • 7.5K
  • 19 Feb 2021
Topic Review
Viroids: Definition and Features
Viroids are plant-restricted parasites that represent a remarkable model system to analyze many aspects of host-pathogen interactions at the genomic level. As the smallest known agents of infectious disease (247-401 nucleotides, nt), they have a highly structured, single-stranded circular naked and non-coding RNA genome. Although the list of known diseases caused by viroids and molecular characterization of the causative agents has expanded since they were discovered, their origin, evolution, and interaction with host genetic machinery to induce symptoms or escape the defensive system remain unclear.
  • 7.5K
  • 01 Nov 2020
Topic Review
Straight-Six Engine
The straight-six engine (also referred to as an inline-six engine; abbreviated I6 or L6) is an internal combustion engine, with six cylinders mounted in a straight line along the crankcase with all the pistons driving a common crankshaft (straight engine). The bank of cylinders may be oriented at any angle, and where the bank is inclined away from the vertical, the engine is sometimes called a slant-six (although this is also a Chrysler-specific design). The straight-six layout is the simplest engine layout that possesses both primary and secondary mechanical engine balance, resulting in much less vibration than engines with fewer cylinders.
  • 7.4K
  • 15 Nov 2022
Topic Review
Effects of Petroleum on Soil
Petroleum is the most common global fossil fuel. It is a complex multi-component system mainly composed of various hydrocarbons such as alkanes, cycloalkanes, mono-, bi- and polyaromatic compounds, resins and asphaltenes. In spite of humanity’s need for petroleum, it negatively affects the environment due to its toxicity. The ecological problem is especially serious at petroleum mining sites or during petroleum transportation. Since it is not possible to replace petroleum with less toxic fuel, ways to reduce the toxic impact of petroleum hydrocarbons on the environment need to be developed.
  • 7.4K
  • 08 Jul 2022
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