51,330 research outputs found
Eosentomon impar Nakamura 2010, sp. nov.
No full textEosentomon impar Nakamura sp. nov. Fig. 27; Table 11 Type specimens. Holotype female (NSMT –Ap 481), Kenmarubi, Mt. Fuji, Fujiyoshida–shi, Yamanashi Prefecture, 35º27'06"N, 138º45'12"E, 1060 m elevation, litter of a forest dominated by P. densiflora, 22-IX-2001, R. Itoh leg. Paratypes: 3 females (NSMT –Ap 482–484), same data as for the holotype; 1 female (NSMT –Ap 485), Mt. Komaga–take, Kanegasaki–cho, Iwate Prefecture, 39º11'21"N, 140º55'41"E, 920 m elevation, litter of a forest dominated by F. crenata, 18-VIII-2001, H. Tamura et al. leg.; 1 female (NSMT –Ap 486), Otaki, Chichibu–shi, Saitama Prefecture, 35º56'58"N, 138º53'57"E, 900 m elevation, 1-V-1991, Y. Kuwabara leg.; 2 females (NSMT – Ap 487–488), Busseki, Nakatsugawa, Chichibu–shi, Saitama Prefecture, 35º59'44"N, 138º49'30"E, 670 m elevation, litter of a forest dominated by F. crenata and Q. crispula, 26- IV- 1988, K. Machida leg.; 2 females (NSMT –Ap 489–490), Omaru–yama, Kamikuisshiki–mura, Yamanashi Prefecture, 35º26'32"N, 138º38'26"E, 1130 m elevation, litter of a forest dominated by F. crenata and Q. crispula, 18- IV- 2001, R. Itoh leg. Other specimens examined. One female, Mt. Iwate –san, Takizawa –mura, Iwate Prefecture, 39º50'29"N, 141º01'22"E, 1080 m elevation, litter of a forest dominated by Q. crispula, 28-VI-1985, O. Nakamura leg.; 1 female, Bato –machi, Tochigi Prefecture, 36º45'57"N, 140º08'52"E, 150 m elevation, litter of a forest dominated by Quercus serrata, 8-VII-2002, Y. Hagiwara leg. Description. Body length 605 µm (605–852 µm). Head 104 (96–107) µm long, 80 (68–84) µm wide. Setae and sensilla on head similar to the preceding species (Figs. 27A, C, F); seta sp 1.3 (1.2–1.7) times longer than p; seta rs inflated, as long as sr (Fig. 27B). On galea (Fig. 27D) digit O longer than M and I, M and I close to each other. Mandible with 3 teeth (Fig. 27E). Clypeal apodemes distinct (Figs. 27A, B). Pseudoculus circular (Fig. 27F), 11 (9–11) µm long, PR = 9 (9–11). Foretarsus length (Figs. 27G–I) 69 (59–71) µm; claw 15 (14–16) µm, TR = 4.9 (4.4–5.1); empodium as long as claw, 15 (13–16) µm, EU = 1.0; sensillum s slightly longer than claw, 16 (16–17) µm. Sensillum t1 closer to α 3 than to α 3 ', BS = 0.9 (0.8–0.9); t2 thinly spatulate; t3 broadened, reaching base of α 7; a not reaching base of γ 2; b spatulate; c reaching nearly to base of γ 3; d broadened, surpassing base of α 6; e and g roundedly spatulate and long; f1 thinly spatulate; f2 reaching base of γ 5; a' at same level with α 3; b'1 nearer to δ 3' than to δ 4', slightly broadened and almost reaching base of δ 4'; b'2 thin; c' absent. Length of middle tarsus 36 (29–38) µm, length of claw 11 (9– 11) µm; hind tarsus 45 (36–45) µm, claw 11 (10–13) µm; both empodia short (Figs. 27J, K), 3 (1–2) µm long; on hind tarsus (Fig. 27K) D2 and D4 spine-like, but more slender than D5. Tracheal camerae distally contracted (Fig. 27L). Central lobe trapezoidal and inner line constricted in middle (Fig. 27M). Laterostigmata II–IV large, with no inner structure; those on V–VII small. On female squama genitalis (Fig. 27N) S-shaped sclerotization on processus sternalis, caput processus of duck’s head-type, filum processus long. Male unknown. Chaetotaxy as in Table 11. On thoracic tergites II–III, P1a seta-like, posterior to P1–P2; P2a seta-like, nearer to P2 than to P3. P1a on abdominal tergite I, P1a and P2a on II–VI and P2a on VII filiform and longer than P1; P1a on VII sensillum-like and about one-third length of P1, posterior to P1–P2; on tergite VIII P1a' oblong and anterior to P2 (Fig. 27O); P1a' and P2 nearly the same level with M4; P2a linear. Setae 1 and 2 on abdominal tergite XI microchaetae. A pair of ventral anterior setae on telson small and sensillum-like. Diagnosis. The present species is similar to E. brevicorpusculum Yin and E. dissimilis Yin from China (Yin 1965, 1979, 1999) in many respects, but this new species is different in the absence of foretarsal sensillum c' (present in the latter two). Moreover the present species is different from E. brevicorpusculum in having four pairs of anterior setae on abdominal tergites V–VI (five pairs in E. brevicorpusculum), and from E. dissimilis in three pairs of anterior setae on the abdominal tergite VII (four pairs in E. dissimilis) and the length of foretarsal sensillum b'1 reaching nearly to base of δ 4' (not reaching base of δ 4 in E. dissimilis). The present species is also similar to E. udagawai, E. taiwanense Nakamura, 1997 from Taiwan (Nakamura, 1997) and E. pusillum Ewing from Michigan, Florida and Carolina, USA (Ewing, 1940; Bernard, 1990), but it is easily distinguished by the long empodium on the hind tarsus (short in this new species). Chaetotaxic variations observed consisted of the asymmetric absences of P1 on the abdominal tergite III in one female and A3 on the abdominal sternite III in another female from Mt. Fuji. Etymology. The specific name is the Latin word for “unequal” and referes to the long inclusion of this species in E. udagawai and its allies. Distribution. Japan (Honshu).Published as part of Nakamura, Osami, 2010, Taxonomic revision of the family Eosentomidae (Hexapoda: Protura) from Japan 2701, pp. 1-109 in Zootaxa 2701 on pages 49-5
Dynamical versus static imperfections in quantum computers
No full textWe study the effects of imperfections in a spin model of a quantum computer. We identify different regimes, ranging from low frequency fluctuations, where the imperfections can be considered static, to the high frequency case, where the imperfections are purely dynamical and their effects are shown to be completely wiped out
Depolarization and decreased surface expression of K+ channels contribute to NSAID-inhibition of intestinal restitution
No full textNon-steroidal anti-inflammatory drugs (NSAIDs) contribute to gastrointestinal ulcer formation by inhibiting epithelial cell migration and mucosal restitution; however, the drug-affected signaling pathways are poorly defined. We investigated whether NSAID inhibition of intestinal epithelial migration is associated with depletion of intracellular polyamines, depolarization of membrane potential (Em) and altered surface expression of K+ channels. Epithelial cell migration in response to the wounding of confluent IEC-6 and IEC-Cdx2 monolayers was reduced by indomethacin (100μM), phenylbutazone (100μM) and NS-398 (100μM) but not by SC-560 (1μM). NSAID-inhibition of intestinal cell migration was not associated with depletion of intracellular polyamines. Treatment of IEC-6 and IEC-Cdx2 cells with indomethacin, phenylbutazone and NS-398 induced significant depolarization of Em, whereas treatment with SC-560 had no effect on Em. The Em of IEC-Cdx2 cells was: −38.5±1.8mV under control conditions; −35.9±1.6mV after treatment with SC-560; −18.8±1.2mV after treatment with indomethacin; and −23.7±1.4mV after treatment with NS-398. Whereas SC-560 had no significant effects on the total cellular expression of Kv1.4 channel protein, indomethacin and NS-398 decreased not only the total cellular expression of Kv1.4, but also the cell surface expression of both Kv1.4 and Kv1.6 channel subunits in IEC-Cdx2. Both Kv1.4 and Kv1.6 channel proteins were immunoprecipitated by Kv1.4 antibody from IEC-Cdx2 lysates, indicating that these subunits co-assemble to form heteromeric Kv channels. These results suggest that NSAID inhibition of epithelial cell migration is independent of polyamine-depletion, and is associated with depolarization of Em and decreased surface expression of heteromeric Kv1 channels.ID: S0006295207001931; M3: Article; Accession Number: S0006295207001931; Author: L.C. Freeman (b); Author: D.F. Narvaez (a); Author: A. McCoy (a); Author: F.B. von Stein (c); Author: S. Young (b); Author: K. Silver (a); Author: S. Ganta (b); Author: D. Koch (b); Author: R. Hunter (b); Author: R.F. Gilmour (c); Author: J.D. Lillich (a, ⁎); Affiliation: Department of Clinical Sciences, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Anatomy and Physiology, Kansas State University, Manhattan, KS 66506, United States; Affiliation: Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, United States; Keyword: Non-steroidal anti-inflammatory drugs; Keyword: Intestinal epithelial cells; Keyword: Membrane potential; Keyword: Potassium channels; Number of Pages: 12; Language: English;Source type: Electronic(1)http://search.ebscohost.com/login.aspx?direct=true&db=edselp&AN=S0006295207001931&site=eds-live&scope=sit
A “rootless” serpentinite seamount on the southern Izu-Bonin forearc: implications for basal erosion at convergent plate margins
No full textWe use multichannel seismic reflection (MCS) and gravity data from the southern Izu-Bonin convergent plate margin to test for tectonic erosion. The Hahajima Seamount is a serpentinite seamount on the Izu-Bonin forearc. This serpentinite body likely originated from the mantle wedge beneath the Izu-Bonin arc, but it subsequently detached. MCS data and gravity modeling demonstrate that the Ogasawara Plateau on the incoming Pacific plate has been partly subducted beneath the Hahajima Seamount. Our analysis indicates that the Hahajima Seamount is a “rootless” serpentinite seamount, and the “root” of the serpentinite body was eroded during subduction of the western edge of the Ogasawara Plateau. Structural features of the Hahajima Seamount, the Ogasawara Plateau, and the Philippine Sea plate suggest that tectonic erosion, particularly basal erosion, has been occurring throughout this area.<br/
Data for: Information seeking mechanism of neural populations in the lateral prefrontal cortex
No full textData of unit recording from monkeys that performed information seeking tasks.Data obtained from monkeys S (Data_table_Nakamura1) and R (Data_table_Nakamura2). Each sheet stores data concerning one neuron. Entries of A1 and A2 are the sites of the neuron on rostral-caudal and dorsal-ventral axes, respectively. The i-th entries in columns C and D are times at onset of the six dots and the second onset of the central cross fixation in the i-th trial of task A, respectively. All values of time in these tables indicate times after onset of the computer program that presents visual stimuli of the behavioral tasks and detects monkeys’ eye movements. Value 0 indicates that monkeys ended the trial before the corresponding event. The i-th entry in column E is the firing time of the i-th spike of the neuron in task A. The i-th entries in columns G, H, and I are times at onset of the six dots, the second onset of the central cross fixation, and the third onset of the central cross fixation in the i-th trial of task B, respectively. The i-th entry in column J is the firing time of the i-th spike of the neuron in task B.The i-th entries in columns K and L are times at onset of the six dots and the second onset of the central cross fixation in the i-th trial of task C, respectively. The i-th entry in column M is the firing time of the i-th spike of the neuron in task C.The i-th entries in column O are times at onset of the six dots in the i-th trial of task D, respectively. The i-th entry in column P is the firing time of the i-th spike of the neuron in task D
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Measuring Firms’ R&D Effects on Technical Progress: Japan in the 199
No full textOne of the important public policy issues in science and technology is to ascertain if and how firms' investments in research and development (R&D) contribute to technical progress at firm and industry levels. Griliches (1979) made a pioneering contribution to our understanding of economic growth by pointing out that accumulation of firms' investments in R&D and creation of knowledge will lead to technical progress. In this paper we present a method based on index number theory for estimating technical progress and then apply it for estimating technical progress for Japanese manufacturing firms in the 1990s. Estimated technical progress is then used to test the above Griliches hypothesisR&D; Japan; technical progress; economic growth
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
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