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274 results on '"Funaki, M."'

9. Non-production vegetation has a positive effect on ecological processes in agroecosystems

Author

Jennifer L. Pannell, Febyana Suryaningrum, Funaki M, Chloé Mathieu, Margaret C. Stanley, David A. Norton, Cao Songling, Brugman A, Bradley S. Case, and Hannah L. Buckley

Subjects
Abiotic component, Agroecosystem, education.field_of_study, geography, geography.geographical_feature_category, Ecology, Intensive farming, Population, Biodiversity, medicine, Environmental science, Ecosystem, medicine.symptom, education, Vegetation (pathology), Riparian zone
Abstract

An ever-expanding human population, ongoing global climatic changes, and the spread of intensive farming practices is putting increasing pressure on agroecosystems and the inherent biodiversity they contain. Non-production vegetation elements, such as woody patches, riparian margins, and inter-crop and restoration plantings, are vital for conserving biodiversity in agroecosystems and are therefore considered key to sustaining the biotic and abiotic processes underpinning sustainable and resilient agroecosystems. Despite this critical role, there is a surprising lack of synthesis of which types of non-production vegetation elements drive and/or support ecological processes and the mechanisms by which this occurs. Using a systematic, quantitative literature review of 342 articles, we asked: what are the effects of non-production vegetation elements on agroecosystem processes and how are these processes measured within global agroecosystems? Our literature search focussed on the effects of non-production vegetation related to faunal, weed, disease, and abiotic processes. The majority (61%) of studies showed positive effects on ecological processes: non-production vegetation increased the presence, level or rate of the studied process. However, rather than directly measuring ecosystem processes, 83% of studies inferred processes using proxies for ecosystem function, such as biodiversity and soil physicochemical properties. Studies that directly measured non-production vegetation effects focussed on a limited number of vegetation effects including comparisons of vegetation types, farm-scale configuration, and proximity to vegetation. Moreover, studies directly measuring ecosystem processes were similarly limited, dominated by invertebrate biocontrol, predator and natural enemy spillover, animal movement, and ecosystem cycling. We identify research gaps and present a pathway for future research in understanding the ecosystem components and processes that build resilient, sustainable agroecosystems.

Published
2019

11. Pentlandite and Magnetic Anisotropy in Allende CV3 Chondrite

Author

Funaki, M and Wasilewski, P

Subjects
Lunar And Planetary Science And Exploration
Abstract

The representative Natural Remanent Magnetization (NRM) carrier of Allende is nonstoichiometric pentlandite forming in a magnetic field.The magnetic anisotropy results suggest that the constituent particles were compressed before solidification and then compressed or extended in a different direction.

Published
2000

12. Almahata Sitta Meteorite MagSus Classification Database – the Enstatite Chondrites

Author

Hoffmann, V.H., Wimmer, K., Funaki, M., Hochleitner, R., Kaliwoda, M., Mikouchi, T., and Zolensky, M.E.

Abstract

第8回極域科学シンポジウム/個別セッション：[OA] 南極隕石12月5日（火）国立極地研究所 1階交流アトリウムThe Eighth Symposium on Polar Science/Ordinary sessions: [OA] Antarctic meteoritesTue. 5 Dec./Entrance Hall (1st floor), National Institute of Polar Research

Published
2017

14. Relativistic calculation of nuclear magnetic shielding tensor using the regular approximation to the normalized elimination of the small component. III. Introduction of gauge-including atomic orbitals and a finite-size nuclear model.

Author

Hamaya, S., Maeda, H., Funaki, M., and Fukui, H.

Subjects
NUCLEAR magnetism, HYDROGEN, PERTURBATION theory, ATOMIC orbitals, LIGHT
Abstract

The relativistic calculation of nuclear magnetic shielding tensors in hydrogen halides is performed using the second-order regular approximation to the normalized elimination of the small component (SORA-NESC) method with the inclusion of the perturbation terms from the metric operator. This computational scheme is denoted as SORA-Met. The SORA-Met calculation yields anisotropies, Δσ=σ∥-σ⊥, for the halogen nuclei in hydrogen halides that are too small. In the NESC theory, the small component of the spinor is combined to the large component via the operator σvector ·πvector U/2c, in which πvector =pvector +Avector , U is a nonunitary transformation operator, and c≅137.036 a.u. is the velocity of light. The operator U depends on the vector potential Avector (i.e., the magnetic perturbations in the system) with the leading order c-2 and the magnetic perturbation terms of U contribute to the Hamiltonian and metric operators of the system in the leading order c-4. It is shown that the small Δσ for halogen nuclei found in our previous studies is related to the neglect of the U(0,1) perturbation operator of U, which is independent of the external magnetic field and of the first order with respect to the nuclear magnetic dipole moment. Introduction of gauge-including atomic orbitals and a finite-size nuclear model is also discussed. [ABSTRACT FROM AUTHOR]

Published
2008
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15. Relativistic calculation of nuclear magnetic shielding using normalized elimination of the small component.

Author

Kudo, K., Maeda, H., Kawakubo, T., Ootani, Y., Funaki, M., and Fukui, H.

Subjects
NUCLEAR magnetism, MAGNETIC shielding, ELECTROMAGNETIC shielding, HARTREE-Fock approximation, MAGNETISM, QUANTUM theory
Abstract

The normalized elimination of the small component (NESC) theory, recently proposed by Filatov and Cremer [J. Chem. Phys. 122, 064104 (2005)], is extended to include magnetic interactions and applied to the calculation of the nuclear magnetic shielding in HX (X=F,Cl,Br,I) systems. The NESC calculations are performed at the levels of the zeroth-order regular approximation (ZORA) and the second-order regular approximation (SORA). The calculations show that the NESC-ZORA results are very close to the NESC-SORA results, except for the shielding of the I nucleus. Both the NESC-ZORA and NESC-SORA calculations yield very similar results to the previously reported values obtained using the relativistic infinite-order two-component coupled Hartree-Fock method. The difference between NESC-ZORA and NESC-SORA results is significant for the shieldings of iodine. [ABSTRACT FROM AUTHOR]

Published
2006
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16. Magnetic survey in Ongul Strait, Lutzow-Holm Bay, East Antarctica

Author

Wakino, S., Funaki, M., and Yoshifumi Nogi

Subjects
lcsh:G1-922, lcsh:Geography (General)
Abstract

Measurements of total intensity of the geomagnetic field were carried out during the 35th Japanese Antarctic Research Expedition (JARE-35) in Ongul Strait, Lutzow-Holm Bay, East Antarctica. N-S and NNW-SSE striking magnetic anomalies are observed in Ongul Strait. Negative magnetic anomalies are dominant except for the southwestern part of Ongul Strait. Magnetic anomalies vary from about-100nT to 80nT.

Published
2001

18. Magnetic field irradiated from Bendego octahedrite

Author

Funaki, M., Benyosef, L., Zucolotto, M.E., and Scorzelli, R.

Abstract

第2回極域科学シンポジウム/第34回南極隕石シンポジウム 11月17日（木） 国立国語研究所 2階講堂

Published
2011

25. Relativistic calculation of nuclear magnetic shielding using normalized elimination of the small component

Author

Kudo, K, Maeda, H, Kawakubo, T, Ootani, Y, Funaki, M, Fukui, H, Kudo, K, Maeda, H, Kawakubo, T, Ootani, Y, Funaki, M, and Fukui, H

Abstract

The normalized elimination of the small component (NESC) theory, recently proposed by Filatov and Cremer [J. Chem. Phys. 122, 064104 (2005) ], is extended to include magnetic interactions and applied to the calculation of the nuclear magnetic shielding in HX (X = F,Cl,Br,I) systems. The NESC calculations are performed at the levels of the zeroth-order regular approximation (ZORA) and the second-order regular approximation (SORA). The calculations show that the NESC-ZORA results are very close to the NESC-SORA results, except for the shielding of the I nucleus. Both the NESC-ZORA and NESC-SORA calculations yield very similar results to the previously reported values obtained using the relativistic infinite-order two-component coupled Hartree-Fock method. The difference between NESC-ZORA and NESC-SORA results is significant for the shieldings of iodine., c 2006 American Institute of Physics, application/pdf

Published
2006

30. High resolution Fourier synthesis hard X-ray imaging based on CdTe strip detectors

Author

Miyawaki, R., primary, Niko, H., additional, Okada, Y., additional, Kokubun, M., additional, Makishima, K., additional, Negoro, H., additional, Kotoku, J., additional, Terada, Y., additional, Tanaka, T., additional, Mitani, T., additional, Nakazawa, K., additional, Takahashi, T., additional, Ohno, R., additional, Funaki, M., additional, Kuroda, Y., additional, Genba, K., additional, and Onishi, M., additional

Published
2005
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32. High-resolution Schottky CdTe diode detector

Author

Takahashi, T., primary, Mitani, T., additional, Kobayashi, Y., additional, Kouda, M., additional, Sato, G., additional, Watanabe, S., additional, Nakazawa, K., additional, Okada, Y., additional, Funaki, M., additional, Ohno, R., additional, and Mori, K., additional

Published
2002
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