147 research outputs found
Nutrient inputs from seabirds and humans on a populated coral cay
No full textInputs of inorganic nutrients in 1992 from seabirds (maximum of ca 80 000 breeding pairs) are compared to inputs from humans (97 700 person days) on Heron Island at the southern end of the Great Barrier Reef, Australia. Noddies deposited ca 107 t, and shearwaters ca 22 t, of fresh guano. The composition of fresh noddy guano was 7.3% N, 1.5% P, 60% moisture and 31.2% other substances. Assuming a similar composition for shearwaters, the total annual deposition of guano contained 9.4 t nitrogen and 1.9 t phosphorus. Although inputs of N and P from human sewage into the cay system (ca 0.3 t of each) were much less than that from birds, all nutrients from humans are released in liquid form and percolate directly into the cay. Nutrients may be transported from guano on Heron Island into the water immediately surrounding the island. -from Author
Vaping and Instagram: A content analysis of e-Cigarette posts using the Content Appealing to Youth (CAY) Index
No full textThe promotion of flavors, perceptions of “coolness,” and general curiosity are characteristics of electronic nicotine delivery systems (ENDS) that have appealed to young adults. However, little is known about the characteristics of popular social media posts related to ENDS on the social media network, Instagram. Methods: Content analysis was performed using the Content Appealing to Youth (CAY) index. Over 700 posts were collected from August 2019 – December 2019 by searching the Instagram hashtags, #vape and #vapelife. Frequencies and percentages were calculated for each of the six major categories and 35 sub-categories. Results: Nearly all of the images were color photographs and 84% featured an ENDS device (mod) as the focal point. The style of the device was often matte (75%) in only one or two main colors (55%). Warnings about age restrictions and nicotine were included in 28% of images, but commonly used promotional tactics, such as humor, presence of vapor puffs, and flavors were rarely utilized. Conclusions: Instagram posts featuring ENDS are visually appealing and like cigarette packaging, may have the capacity to influence perceptions about the product. Since it is culturally normative for appealing images to be shared on Instagram, greater attention should be placed on media literacy skills to educate young adults about ENDS viewed on social media.Journal ArticlePublishe
CAY HILL: The possibilities of creating a synergy between an informal settlement, local craftmanship and cultural economic opportunities on Sint Maarten
No full textOn September 6th of 2017 Sint Maarten got struck by Hurricane Irma, which caused severe damage to the houses, especially to the informal settlements. Sint Maarten is a Caribbean island with a rooted past from its history that has caused severe economic difficulties. Along with, a high amount of migration that has been common among he islands, Sint Maarten has a tourism-led economy. In Turn, the hurricane also affected the tourism-led economy as many visits to the island declined. Lots of building materials on the island are getting imported. The island is lacking of local building resources and knowlegde. This project aims to propose an alternative housing solution and local economic business model for the people living in the informal settlement Cay Hill. This study is investigating the possibilities of creating a synergy between an informal settlement, local craftmanship and cultural economic opportunities on Sint Maarten.Architecture, Urbanism and Building Science
Trail log - 2015
No full textMay, Wuhan, China, Conference, Chinese Environmental Ethics, and trip to Three Gorges Dam. June, Pomona, California, Conference "Seizing an Alternative: Toward an Ecological Civilization," Claremont colleges, John Cobb, Bill McKibben, Vandana Shiva, Wes Jackson. June, Bahamas, Nassau, Templeton Foundation Meeting, and Powerboat Adventure, trip to Allen's Cay and Ship Channel Cay. July, trip to Kiel Germany, and International Society for Environmental Ethics, meeting at Christian-Albrechts-Universitët. Field trips to Dasenmoor, peat bog, and Wadden Sea, intertidal zone, tidal flats and wetlands. October, trip to Virginia to speak at Westminster Canterbury Richmond and to Shenandoah National Park and Shenandoah Valley. Local hikes and trips
The Turkish Tea Garden: Exploring a 'Third Space' with cultural resonances
No full textThis article examines the history, use, and significance of the Turkish Tea Garden or Cay Bahcesi, positing that these gardens offer unique democratic spaces for public discourse set within the polis. The article unpacks the historical, cultural, and symbolic features of these gardens, and the role these shared spaces play in Turkey’s multivalent civic environment. It employs Ray Oldenburg’s notion of “third space” to consider how these gardens provide inclusive settings for a culturally diverse citizenry. Furthermore, the article considers how these spaces act as repositories of shared memory, mediating conflict that appears in other societal spheres. The gardens are presented as uniquely “sacred” third spaces, distinct from the “profane” third spaces characterized by Oldenburg.Accepted Author ManuscriptSpatial Planning and Strateg
Typical Frobenius coverings
No full textA covering p from a Cayley graph Cay(G, X) onto another Cay(H, Y) is called typical Frobenius if G is a Frobenius group with H as a Frobenius complement and the map p: G -> H is a group epimorphism. In this paper, we emphasize on the typical Frobenius coverings of Cay(H, Y). We show that any typical Frobenius covering Cay(G, X) of Cay(H, Y) can be derived from an epimorphism (f) over bar from G to H which is determined by an automorphism f of H. If Cay(G, X (1)) and Cay(G, X (2)) are two isomorphic typical Frobenius coverings under a graph isomorphism phi, some properties satisfied by phi are given.Mathematics, AppliedMathematicsSCI(E)中国科技核心期刊(ISTIC)中国科学引文数据库(CSCD)0ARTICLE112209-22142
Sensitivity of African swine fever virus (ASFV) to heat, alkalinity and peroxide treatment in presence or absence of porcine plasma.
No full text<p>African swine fever virus (ASFV) is a highly resistant viraemic virus with devastating socio-economic impact. Its present epidemiology in Eastern Europe and Russia warrants increased biosecurity measures in Western Europe. This includes proactive precautions on traffic of pork products within and between areas that are officially free from ASF. Namely, delayed notification of clinical signs or introduction of a low-virulent strain in ASF-free areas could result in presence of ASFV in veterinary inspected pork and pork by-products. The present study evaluated sensitivity of ASFV to physical and chemical processing conditions that can be applied on abattoir collected blood for production of spray dried porcine plasma (SDPP). Standard endpoint dilution assays were used to determine the sensitivity of Vero-cell adapted Lisbon/60 strain ASFV to heat treatment (H) at alkaline conditions (A) with or without peroxide (P). Time (T) dependent inactivation was evaluated in presence or absence of porcine plasma. HAPT-treatment at H = 48 °C, A = pH 10.2 and P = 20.6 or 102.9 mM HO during 10 min (T) inactivated (95LCL) 3.35, respectively, 4.17 log TCID ASFV/ml plasma. In absence of plasma, 6.99 log-inactivation was reached within 5 min. Implementation of HAPT-treatment on plasma from ASFV-free areas provides an additional safety hurdle for derived blood products in the unlikely event that blood from few undetected infected pigs would contaminate pooled veterinary inspected blood. Such an additional processing step in the production of SDPP is thus a valuable precautionary measure to overcome a potential biosecurity-break that may arise during the high-risk phase between transboundary introduction of ASFV and first notification of the disease.</p></p
Non-normal one-regular and 4-valent Cayley graphs of dihedral groups D2n
No full textAbstractA Cayley graph X=Cay(G,S) of group G is said to be normal if R(G) is normal in Aut(X). Let G=〈a,b∣an=b2=1〉, S be a generating set of G, |S|=4. In this paper we show that any one-regular and 4-valent Cayley graph X=Cay(G,S) of dihedral groups G is normal except that n=4s, and X≃Cay(G,{a,a−1,aib,a−ib}), where i2≡±1(mod2s), 2≤i≤2s−2
Automorphism groups of tetravalent Cayley graphs on regular p-groups
No full textAbstractLet Cay(G,S) be a connected tetravalent Cayley graph on a regular p-group G and let Aut(G) be the automorphism group of G. In this paper, it is proved that, for each prime p≠2,5, the automorphism group of the Cayley graph Cay(G,S) is the semidirect product R(G)⋊Aut(G,S) where R(G) is the right regular representation of G and Aut(G,S)={α∈Aut(G)|Sα=S}. The proof depends on the classification of finite simple groups. This implies that if p≠2,5 then the Cayley graph Cay(G,S) is normal, namely, the automorphism group of Cay(G,S) contains R(G) as a normal subgroup
On the Isomorphisms of Cayley Graphs of Abelian Groups
No full textAbstractLet G be a finite group, S a subset of G\{1}, and let Cay (G,S) denote the Cayley digraph of G with respect to S. If, for any subset T of G\(1), Cay(G,S)≅Cay(G,T) implies that Sα=T for some α∈Aut(G), then S is called a CI-subset. The group G is called a CIM-group if for any minimal generating subset S of G,S∪S−1 is a CI-subset. In this paper, CIM-abelian groups are characterized
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