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The bag that opened up my Blackness | Opinion
Telfar shopping bags are everywhere. Oprah has one in purple. Beyoncé has one in white. For Alexi, Telfar Shopping Bags offer more than a typical luxury bag.“I was raised by my mom, who is White [and] I never really got to explore the concept of Black beauty,” Alexi says. “It’s totally become a way for me to kind of explore that side of who I am, in a way that gives me more agency.”
Streaming Video
Bag in the wind
One cold, spring morning, an ordinary grocery bag begins blowing around a landfill, then as it travels down a road, through a stream, and into a town, it is used in various ways by different people, many of whom do not even notice it.
Book
Living supramolecular polymerization
Greater control is achieved over the chain growth and properties of dynamic materials
Most polymers that we encounter, like those used in grocery bags and soda bottles, are formed from small molecules (monomers) held together by strong covalent bonds. In supramolecular polymerization, monomers bond through weaker reversible interactions, such as hydrogen bonds (H-bonds). Supramolecular polymerization usually proceeds through step-growth mechanisms ( 1 ), where both ends of each monomer are reactive and many smaller oligomers form before long polymers appear. To overcome this problem, a method developed for covalent polymers known as living polymerization has been adopted for supramolecular polymers to achieve better control and uniformity of chain growth and dispersity.
Journal Article
One plastic bag : Isatou Ceesay and the recycling women of the Gambia
Introduces the efforts of a woman in the Gambia who found a way to recycle the hundreds of discarded plastic bags that littered her community.
Book
Sunset: Key West
The following is a journal, recovered from the ice years later, of one expedition leader who kept a stiff (and frozen) upper lip to the end. Omar refused to remove his finneskos and Cuthbart and I were forced to hold him down in the tent while Lieutenant Waldo removed the boots and blood-clotted sennegrass to reveal the seriousness of the man's left foot, which resembled in color, texture and odour a squashed pumpkin that had been left out in a frosted field to rot. The Doctor has extracted from his kit a tin of Les Delectables Portuguese sardines in olive oil for a festive treat. [...]we are reduced to 1/3rd of pemmican and chocolate and very little butter or biscuit, having found the last depot completely depleted by marauding beasts of unknown origin who must have very much enjoyed the feast of frozen and butchered sledge dogs (the poor things superfluous at that point) our support party deposited there a month ago.
Journal Article
Litter decomposition
Aims
We examined the importance of litter quality and microclimate on early-stage litter mass loss, analysed the importance of interactions among environmental factors in determining key decomposition parameters and compared the variation in decomposition rates in vegetation types and sites with similar climate.
Methods
Following the Tea-Bag Index approach, 464 tea-bags were incubated in the soil in 79 sites, distributed across Italy, which included six vegetation types and a broad range of microclimatic conditions.
Results
Litter type exerted a stronger control on mass loss compared to climatic factors. The effects of soil moisture were not the same for high and lower quality litter. In addition, the effects of temperature on the decomposition rate depended on soil moisture. The stabilization factor was strongly temperature-dependent, but the influence of temperature differed among vegetation types: those dominated by small-size plants showed a strong decrease in the potential amount of plant material entering into the soil stock under warmer temperatures. The lowest variation in decomposition rate was found in sites characterised by low temperatures, and, among the vegetation types, in alpine snowbeds.
Conclusions
The role of litter quality and of the interactions among environmental conditions can potentially determine significant shifts in the expected patterns of ecosystem carbon fluxes.
Journal Article
Effectiveness and Use of Avalanche Airbags in Mortality Reduction Among Winter Recreationists
Introduction: The number of backcountry skiers and snowboarder surged in the last years, especially during the COVID-19 pandemic, as ski resorts shut down. Inevitably, this led to an increase in avalanche-related injuries and death. As avalanche rescue device, avalanche airbags are increasingly becoming part of the standard winter mountaineering equipment. Method: This study provides a review of available data and an updated perspective on avalanche airbags, discussing their function and efficacy to reduce mortality and their limitations. Results: Causes of death in individuals caught by avalanches are multiple. Airbags seem to reduce mortality by decreasing chances of critical burial, the most determining risk factor. However, there is scarcity of reliable scientific research on the topic, and the way in which airbags reduce mortality and to what extent is still debated. Several elements seem to influence airbags efficacy, and their use still yields several limitations linked to manufacturing, proper use, users education, and risk compensation. Conclusion: Avalanche airbags seem to be an important tool in reducing mortality in backcountry expeditions. However, more research and standardized data collection is needed to fill the knowledge gap, mountain communities should promote adequate education of winter-recreationists on how to prevent and react to an avalanche, and on the correct use of airbags in combination with already available tools such as transceivers, probes and shovels, and manufacturing companies should ensure higher efficacy of the survival avalanche equipment for better prevention of burial, asphyxia, and trauma.
Journal Article
The underwater resonant airbag: a new wave energy converter
The time-domain simulation follows the heaving of the conical float in waves and calculates the bag shape, ballast motion, adiabatic air pressure and the flow through the turbine. There are two independent oscillators, the float with its resonance and the bag/ballast with its resonance. The coupling of the two oscillators gives rise to a wide band response with two peaks in the capture width each reaching the theoretical λ/2π. In this new wave energy converter, apart from the turbine, there are no mechanical moving parts, no joints nor pistons, no end stops nor sliding seals, no flaps nor one-way valves. The expected life of the airtight flexible bag remains to be determined, but potential manufacturers are optimistic.
Journal Article
InsomnIraq
Internet. 1200 Shuttle to Wal-Mart. The food court is dead. The girl Gabe's gaping at is looking at dream catchers at a kiosk. \"Why do you write all this?\" Gabriel wiggles his finger in a circle to mean the food court with more employees than customers, with no music on. The train blows its whistle in town and I imagine the sound softly falling on Bozeman's dreamers in their beds.
Journal Article