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The boy who invented the popsicle : the cool science behind Frank Epperson's famous frozen treat
\"A curious child who always knew he wanted to be an inventor when he grew up, Frank spent much of his youth experimenting in his basement laboratory -- mixing and measuring, testing and inspecting, studying and scrutinizing. One of his favorite things to experiment with was soda water, and one day after discovering the perfect flavoring for his most recent invention, he left it outside on his back porch with a spoon in it. The next morning, the drink had frozen solid -- he had invented a frozen treat. It wasn't until he was an adult that Frank decided to market his invention. At first, he called it the \"Ep-sicle,\" but with his nine children constantly begging, \"Pop, can we have a 'sicle\"?\" he changed the name to the Popsicle. The science experiments that young Frank performs in the story are interweaved throughout the narrative, so readers can experiment right along with him. At the end of the book are additional historical notes about Frank and his invention, along with photos and a bibliography.\"-- Provided by publisher.
Book
Hear Blue Origin’s all-female crew react to being in space
On April 14, pop singer Katy Perry, journalist Gayle King, and four other women, became the first all-female crew to fly to space since 1963.
Streaming Video
Analysis of organochlorines and polycyclic aromatic hydrocarbons designed for pollutant biomonitoring in three seabird matrices
Pollutant biomonitoring demands analytical methods to cover a wide range of target compounds, work with minimal sample amounts, and apply least invasive and reproducible sampling procedures. We developed a method to analyse 68 bioaccumulative organic pollutants in three seabird matrices: plasma, liver, and stomach oil, representing different exposure phases. Extraction efficiency was assessed based on recoveries of spiked surrogate samples, then the method was applied to environmental samples collected from Scopoli’s shearwater ( Calonectris diomedea ). Extraction was performed in an ultrasonic bath, purification with Florisil cartridges (5 g, 20 mL), and analysis by GC–Orbitrap–MS. Quality controls at 5 ng yielded satisfactory recoveries (80–120%) although signal intensification was found for some compounds. The method permitted the detection of 28 targeted pollutants in the environmental samples. The mean sum of organic pollutants was 4.25 ± 4.83 ng/g in plasma, 1634 ± 2990 ng/g in liver, and 233 ± 111 ng/g in stomach oil (all wet weight). Pollutant profiles varied among the matrices, although 4,4′-DDE was the dominant compound overall. This method is useful for pollutant biomonitoring in seabirds and discusses the interest of analysing different matrices.
Journal Article
The potential effects of microplastics on human health
Microplastic contamination is ubiquitous in aquatic and terrestrial environments, found in water, sediments, within organisms and in the atmosphere and the biological effects on animal and plant life have been extensively investigated in recent years. There is growing evidence that humans are exposed to microplastics via ingestion of food and drink and through inhalation. Despite the prevalence of contamination, there has been limited research on the effects of microplastics on human health and most studies, to date, analyse the effects on model organisms with the likely impacts on human health being inferred by extrapolation. This review summarises the latest findings in the field with respect to the prevalence of microplastics in the human–environment, to what extent they might enter and persist in the body, and what effect, if any, they are likely to have on human health. Whilst definitive evidence linking microplastic consumption to human health is currently lacking, results from correlative studies in people exposed to high concentrations of microplastics, model animal and cell culture experiments, suggest that effects of microplastics could include provoking immune and stress responses and inducing reproductive and developmental toxicity. Further research is required to explore the potential implications of this recent contaminant in our environment in more rigorous clinical studies.
Journal Article
K-pop
K-Pop: Popular Music, Cultural Amnesia, and Economic Innovation in South Korea seeks at once to describe and explain the emergence of export-oriented South Korean popular music and to make sense of larger South Korean economic and cultural transformations. John Lie provides not only a history of South Korean popular music—the premodern background, Japanese colonial influence, post-Liberation American impact, and recent globalization—but also a description of K-pop as a system of economic innovation and cultural production. In doing so, he delves into the broader background of South Korea in this wonderfully informed history and analysis of a pop culture phenomenon sweeping the globe.
eBook
Physisorption and Chemisorption Mechanisms Influencing Micro (Nano) Plastics-Organic Chemical Contaminants Interactions: A Review
Microplastics, which serve as sources and vector transport of organic contaminants in both terrestrial and marine environments, are emerging micropollutants of increasing concerns due to their potential harmful impacts on the environment, biota and human health. Microplastic particles have a higher affinity for hydrophobic organic contaminants due to their high surface area-to-volume ratio, particularly in aqueous conditions. However, recent findings have shown that the concentrations of organic contaminants adsorbed on microplastic surfaces, as well as their fate through vector distribution and ecological risks, are largely influenced by prevailing environmental factors and physicochemical properties in the aquatic environment. Therefore, this review article draws on scientific literature to discuss inherent polymers typically used in plastics and their affinity for different organic contaminants, as well as the compositions, environmental factors, and polymeric properties that influence their variability in sorption capacities. Some of the specific points discussed are (a) an appraisal of microplastic types, composition and their fate and vector transport in the environment; (b) a critical assessment of sorption mechanisms and major polymeric factors influencing organic contaminants-micro (nano) plastics (MNPs) interactions; (c) an evaluation of the sorption capacities of organic chemical contaminants to MNPs in terms of polymeric sorption characteristics including hydrophobicity, Van der Waals forces, π–π bond, electrostatic, and hydrogen bond interactions; and (d) an overview of the sorption mechanisms and dynamics behind microplastics-organic contaminants interactions using kinetic and isothermal models. Furthermore, insights into future areas of research gaps have been highlighted.
Journal Article
Erroneous and Incomplete Reporting of the Pelvic Organ Prolapse Quantification System
Introduction and Hypothesis
Accurate and complete reporting of the Pelvic Organ Prolapse Quantification (POP-Q) system is essential for reporting research outcomes in POP. We aimed to assess the accuracy and completeness of POP-Q reporting in studies published from selected journals in 2023 and evaluate the validity of available POP-Q calculators.
Methods
A systematic search of Medline and Embase was conducted following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines to identify eligible studies from selected journals in 2023 that utilised the POP-Q system. An assessment of available POP-Q calculators was also performed.
Results
Of the 134 studies identified, 18 (13.4%) met the inclusion criteria. Twelve studies reported complete quantitative POP-Q data of which 9 (75%) contained identifiable POP-Q reporting errors. These included 5 studies reporting mean Aa > Ba, 2 reporting mean Ap > Bp, 6 reporting C > Bp, 5 reporting mean C > Ba, 1 reporting mean Aa > + 3, and 1 reporting mean D > C. The remaining 6 of the 18 studies reported incomplete POP-Q measurements, which restricted our ability to identify further reporting errors, except for 2 studies reporting C > Ba and C > Bp respectively. The evaluated POP-Q calculator permitted the input of inaccurate POP-Q data.
Conclusions
Erroneous and/or incomplete quantitative POP-Q data were identified in 15 of the 18 studies reviewed (83.3%). Our findings highlight the need for improved POP-Q data reporting. Journal editors and reviewers should ensure that publications provide complete and accurate quantitative POP-Q data. POP-Q calculators should be based on algorithms that ensure complete and accurate data inputs and outputs.
Journal Article
Painful and Painless Diabetic Neuropathies: What Is the Difference?
Purpose of ReviewThe prevalence of diabetes mellitus and its chronic complications are increasing to epidemic proportions. This will unfortunately result in massive increases in diabetic distal symmetrical polyneuropathy (DPN) and its troublesome sequelae, including disabling neuropathic pain (painful-DPN), which affects around 25% of patients with diabetes. Why these patients develop neuropathic pain, while others with a similar degree of neuropathy do not, is not clearly understood. This review will look at recent advances that may shed some light on the differences between painful and painless-DPN.Recent FindingsGender, clinical pain phenotyping, serum biomarkers, brain imaging, genetics, and skin biopsy findings have been reported to differentiate painful- from painless-DPN.SummaryPainful-DPN seems to be associated with female gender and small fiber dysfunction. Moreover, recent brain imaging studies have found neuropathic pain signatures within the central nervous system; however, whether this is the cause or effect of the pain is yet to be determined. Further research is urgently required to develop our understanding of the pathogenesis of pain in DPN in order to develop new and effective mechanistic treatments for painful-DPN.
Journal Article