scholarly journals XXVI. Experiments on the peruvian bark

1767 ◽  
Vol 57 ◽  
pp. 221-233 ◽  
Keyword(s):  

Experiment I. An ounce of bark coarsely powdered was divided into two equal parts, one of which was infused forty-eight hours in cold spring water; the other was boiled over a slow fire forty minutes, until about a third part of the water was evaporated.

2008 ◽  
pp. 8-35
Author(s):  
Adele J. Haft

African-American poet Gloria Oden was among those inspired by Elizabeth Bishop’s seminal poem “The Map” (1934). In honor of Bishop, Oden wrote two poems about reading maps: “A Private Letter to Brazil” (1957) and “The Map” (ca. 1961). Like May Swenson’s “The Cloud-Mobile,” Oden’s poems overtly pay homage to Bishop. Like Howard Nemerov’s “The Mapmaker on His Art” and Mark Strand’s “The Map,” Oden’s verses reveal that she shares in Bishop’s understanding of the mapmaker’s art: its imaginative power and limitations, its technical achievement and arbitrary nature. Yet Oden’s two poems are far more politically and historically nuanced than Bishop’s “The Map”—or than any of the other map poems written shortly after Bishop won the 1956 Pulitzer Prize for her collection opening with “The Map” (Poems: North & South—A Cold Spring). Furthermore, unlike her peers, Oden found inspiration in Bishop’s poem and in an identifiable contemporary map. By comparing both of her poems to Bishop’s original as well as uncovering, with the help of Oden’s own words, the identity of her maps, this paper will demonstrate how Oden’s penetrating critique of two popular 1950s wall maps helped her connect not only with Bishop but also with the world she found reflected in, or absent from, the map.


1985 ◽  
Vol 101 (6) ◽  
pp. 2335-2344 ◽  
Author(s):  
S Higashi-Fujime

I reported previously (Higashi-Fujime, S., 1982, Cold Spring Harbor Symp. Quant. Biol., 46:69-75) that active movements of fibrils composed of F-actin and myosin filaments occurred after superprecipitation in the presence of ATP at low ionic strengths. When the concentration of MgCl2 in the medium used in the above experiment was raised to 20-26 mM, bundles of F-actin filaments, in addition to large precipitates, were formed spontaneously both during and after superprecipitation. Along these bundles, many myosin filaments were observed to slide unidirectionally and successively through the bundle, from one end to the other. The sliding of myosin filaments continued for approximately 1 h at room temperature at a mean rate of 6.0 micron/s, as long as ATP remained in the medium. By electron microscopy, it was found that most F-actin filaments decorated with heavy meromyosin pointed to the same direction in the bundle. Myosin filaments moved actively not only along the F-actin bundle but also in the medium. Such movement probably occurred along F-actin filaments that did not form the bundle but were dispersed in the medium, although dispersed F-actin filaments were not visible under the microscope. In this case, myosin filament could have moved in a reverse direction, changing from one F-actin filament to the other. These results suggested that the direction of movement of myosin filament, which has a bipolar structure and the potentiality to move in both directions, was determined by the polarity of F-actin filament in action.


Author(s):  
Akihiko Imajo ◽  
Takashi Yoshikawa ◽  
Nobutaka Saeki

In Japan, the production of traditional handmade Japanese paper using the spring water has been performed in the Shuso area of Shikoku Island. However, the method of production was been handed down by trial and error and observation of the expert movement until now. The produced papers are counted one unit that is five hundred sheets of Japanese paper. Five hundred sheets of Japanese paper are called 1 [lot]. The paper has two type of thickness and its size is 600mm × 1500mm. Thick paper is 9[kgf] per lot. The other hand, thin paper is 8[kgf] per lot. In other words, the expert is making paper which is the difference of 2[gf] per sheet. This time, we have been able to obtain cooperation with traditional craftsman for the digitizing of his skills. Therefore, we visualize the tacit knowledge of the expert’s skill. The expert subject has 34 years of experience of traditional hand-made Japanese paper. We have digitized his manufacturing movement by using motion capture. His movements are analyzed by attaching infrared reflective markers of 20 on each parts of the body. In this study, we found that constant rhythm of the neck in handmade Japanese paper manufacturing movement. Furthermore, the first scoop is performed at the time much shorter than in the case of other scoops.


2010 ◽  
Vol 85 (1) ◽  
pp. 28-32 ◽  
Author(s):  
P. Vignoles ◽  
D. Rondelaud ◽  
G. Dreyfuss

AbstractFour geographical strains of Galba truncatula living on riverbanks (the first on a sedimentary soil and the other three on an acid soil) were subjected to bimiracidial exposures with Fasciola hepatica to study their aptitude for cercarial shedding and to count metacercariae in snails dissected at day 42 post-exposure. All snails were reared in 14-cm Petri dishes at 24°C, with the same spring water (60–73 mg/l of Ca2+) and the same diet (grass and lettuce leaves). Metacercariae of F. hepatica were noted in the four populations after a cercarial shedding or after snail dissection. However, in spite of the breeding method used, the characteristics of snail infections varied with the origin of each geographical strain. For example, the shell heights of infected snails at day 42 were close to those found for the corresponding adults in the field (6.8–8.0 mm for the population living on the sedimentary soil, but only 4.6–5.5 mm for another strain originating from the acid soil). This variability may be explained by assuming that the diet of these riverbank G. truncatula would be different from that of snails living in swampy meadows. However, another hypothesis based on the influence of snail habitat on the characteristics of snail life cannot be excluded.


Zootaxa ◽  
2012 ◽  
Vol 3173 (1) ◽  
pp. 37 ◽  
Author(s):  
CARLES HERNANDO ◽  
PEDRO AGUILERA ◽  
AGUSTÍN CASTRO ◽  
IGNACIO RIBERA

We describe Hydroporus bithynicus sp. n. (Coleoptera, Dytiscidae, Hydroporinae) from the Bolu province in north-west-ern Turkey. The species belongs to the newly defined H. ferrugineus group, and can be separated from the other two mem-bers (H. ferrugineus Stephens, 1829 and H. sanfilippoi Ghidini, 1958) by its more flattened shape, less developed eyesand shape of male genitalia. Its external morphology and the habitat in which all specimens were found (a small pool withupwelling spring water next to a stream) suggest an interstitial habitat, similar to that reported for other species of thegroup. We present a molecular phylogeny of the species of the H. memnonius and H. longulus groups, including somerepresentatives of the main lineages within the genus, based on ca. 2 kb of four mitochondrial genes. We redefine the H.memnonius group and recognise the H. ferrugineus, H. obsoletus and H. morio groups of species as separate entities. Hy-droporus neglectus Schaum, 1845 was found to be related to the species of the H. angustatus, but not the H. memnonius group.


2020 ◽  
Vol 8 ◽  
Author(s):  
Philip A. E. Pogge von Strandmann ◽  
Kevin W. Burton ◽  
Sophie Opfergelt ◽  
Eydís S. Eiríksdóttir ◽  
Melissa J. Murphy ◽  
...  

2019 ◽  
Vol 47 (11) ◽  
pp. 5777-5786 ◽  
Author(s):  
Giovanni Nicoletti ◽  
Marco Saler ◽  
Marco Mario Tresoldi ◽  
Angela Faga ◽  
Mattia Benedet ◽  
...  

Objective: Previous studies have shown regenerative power of the skin with Comano (Trento, Italy) spring water and resident non-pathogenic microflora. This study investigated the action of bacterial lysates that were isolated from Comano spring water on in vitro culture of human skin fibroblasts. Methods: For this study, we selected the following four bacterial lysates: L1 (closest relative: Rudaea cellulosilytica), L2 (closest relative: Mesorhizobium erdmanii), L3 (closest relative: Herbiconiux ginsengi), and L4 (closest relative: Fictibacillus phosphorivorans). Human fibroblasts were cultured under Dulbecco’s modified Eagle’s medium (DMEM) with bacterial lysates added or DMEM (controls). Cell proliferation was evaluated by spectrophotometric absorbance analysis after the XTT-Microculture Tetrazolium Assay. Results: At 24 hours, cultures with L2, L3, and L4 showed a higher absorbance compared with controls. At 48 hours, cultures with L1, L2, and L3 showed slightly lower absorbance compared with controls, and culture with L4 showed a higher absorbance than in the other experimental conditions. At 72 hours, absorbance was lower in cultures with L1, L2, and L3 than in controls, and absorbance was higher in culture with L4 than in the other experimental conditions. Conclusions: Our study indicates a favorable action of Comano spring water microbiota on proliferation of human skin fibroblasts.


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