研究成果を検索

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• 1984

  Steady-State Characteristics of the Push-Pull DC-to-DC Converter

  Shoyama, M. & Harada, K., 1984, In: IEEE Transactions on Aerospace and Electronic Systems. AES-20, 1, p. 50-56 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Inductance 100%
  • Electric potential 55%
  7 被引用数 (Scopus)

• STRESS-STRAIN CHARACTERISTICS OF SAND IN A PARTICLE-CRUSHING REGION.

  Miura, N., Murata, H. & Yasufuku, N., 1984, In: Soils and Foundations. 24, 1, p. 77-89 13 p.

  研究成果: Contribution to journal › Article › 査読

  • Crushing 100%
  • crushing 96%
  • Sand 79%
  • sand 54%
  • particle 44%
  86 被引用数 (Scopus)

• Structural change in the photoexcited cis-polyacetylene

  Tanaka, K., Koike, T., Yoshizawa, K., Ohzeki, K. & Yamabe, T., 1 1 1984, In: Solid State Communications. 49, 2, p. 165-167 3 p.

  研究成果: Contribution to journal › Article › 査読

  • Polyacetylenes 100%
  • polyacetylene 62%
  • Polyacetylene Polymer 61%
  • Infrared absorption 39%
  • Band Gap 37%
  11 被引用数 (Scopus)

• Structure and expression of the alkA gene of Escherichia coli involved in adaptive response to alkylating agents

  Nakabeppu, Y., Miyata, T., Kondo, H., Iwanaga, S. & Sekiguchi, M., 1984, In: Journal of Biological Chemistry. 259, 22, p. 13730-13736 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Alkylating Agents 100%
  • Alkylating Agent 99%
  • 4-Methyladenine 99%
  • 3-Methyladenine DNA 78%
  • DNA-3-methyladenine glycosidase II 78%
  66 被引用数 (Scopus)

• Studies on Off-Flavor Formed during Heating Process of Satsuma Mandarin Juice (IV)

  Shimoda, M., Suetsuna, K., Osajima, Y., Ayano, S. & Maeda, H., 1 1984, In: Nippon Nogeikagaku Kaishi. 58, 12, p. 1217-1223 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Vitamin U 100%
  • mandarin juice 87%
  • dimethyl sulfide 77%
  • satsumas 73%
  • Sulfonium 63%
  4 被引用数 (Scopus)

• Studies on olivoretins indicate a requirement for a free hydroxyl group for teleocidin B activity

  Horiuchi, T., Fujiki, H., Suganuma, M., Hakii, H., Nakayasu, M., Hitotsuyanagi, Y., Aimi, N., Sakai, S., Endo, Y. & Shudo, K., 12 1 1984, In: Gann, The Japanese Journal of Cancer Research. 75, 10, p. 837-840 4 p.

  研究成果: Contribution to journal › Article › 査読

  • olivoretin 100%
  • teleocidins 73%
  • Hydroxyl Radical 45%
  • des-O-methylolivoretin C 17%
  18 被引用数 (Scopus)

• Studies on Prodrugs. III. A Convenient and Practical Preparation of Ampicillin Prodrugs

  Ikeda, S., Sakamoto, F., Kondo, H., Moriyama, M. & Tsukamoto, G., 1984, In: Chemical and Pharmaceutical Bulletin. 32, 11, p. 4316-4322 7 p.

  研究成果: Contribution to journal › Article › 査読

  Open Access

  • aminopenicillanic acid 100%
  • Ampicillin 98%
  • Prodrugs 86%
  • Prodrug 82%
  • Esters 79%
  16 被引用数 (Scopus)

• Studies on the asian eupatoria - II. Cytogeography of Eupatorium chinense subsp. sachalinense var. oppositifolium

  Watanbe, K. & Yahara, T., 3 1 1984, In: The Botanical Magazine Tokyo. 97, 1, p. 87-105 19 p.

  研究成果: Contribution to journal › Article › 査読

  • Eupatorium 100%
  • polyploidy 65%
  • cytotypes 60%
  • habitats 16%
  • diploidy 15%
  8 被引用数 (Scopus)

• STUDY OF CONDENSATION PROCESS OF ORTHOETHYLSILICATE BY THE METHOD OF TRIMETHYLSILYLATION.

  Makihara, M. & Moriya, Y., 1984, In: Yogyo Kyokai Shi/Journal of the Ceramic Society of Japan. 92, 6, p. 328-333 6 p.

  研究成果: Contribution to journal › Article › 査読

  • Trimethylsilylation 100%
  • Condensation 70%
  • Tetramer 69%
  • Molar Mass Distribution 67%
  • condensation 61%
  3 被引用数 (Scopus)

• Study of ICRF Wave Propagation and Absorption in INTOR Tokamak Plasma

  Itoh, K., Itoh, S. I. & Fukuyama, A., 7 1984, In: Japanese Journal of Applied Physics. 23, 7R, p. 889-896 8 p.

  研究成果: Contribution to journal › Article › 査読

  • Cyclotrons 100%
  • Wave propagation 70%
  • cyclotrons 62%
  • Plasmas 61%
  • Ions 61%
  4 被引用数 (Scopus)

• STUDY OF THE POLYMERIZATION OF SILICIC ACID ADSORBED ON IRON(III) HYDROXIDE BY TRIMETHYLSILYLATION-GAS CHROMATOGRAPHY.

  Yokoyama, T., Shimono, T. & Tarutani, T., 1984, In: Bulletin of the Chemical Society of Japan. 57, 8, p. 2315-2316 2 p.

  研究成果: Contribution to journal › Article › 査読

  • Silicic Acid 100%
  • Tetramer 78%
  • Hydroxide 64%
  • Chromatography 62%
  • Polymerization Reaction 47%
  13 被引用数 (Scopus)

• STUDY ON THE FLUIDELASTIC VIBRATION OF TUBE ARRAYS USING MODAL ANALYSIS TECHNIQUE.

  Ohta, K., Kagawa, K., Tanaka, H. & Takahara, S., 1 1 1984, In: Journal of Pressure Vessel Technology, Transactions of the ASME. 106, 1, p. 17-24 8 p.

  研究成果: Contribution to journal › Article › 査読

  • Velocity distribution 100%
  • Fluid dynamics 96%
  • Modal analysis 94%
  • Flow velocity 93%
  • Heat exchangers 79%
  4 被引用数 (Scopus)

• Sulfate Conjugation of Various Phenols by Liver-Soluble Fraction of Goldfish

  Kobayashi, K., Kimura, S. & Oshima, Y., 1984, In: NIPPON SUISAN GAKKAISHI. 50, 5, p. 833-837 5 p.

  研究成果: Contribution to journal › Article › 査読

  • goldfish 100%
  • phenols 83%
  • phenol 81%
  • sulfates 74%
  • sulfate 61%
  5 被引用数 (Scopus)

• Superconductivity under a ferromagnetic molecular field

  MacHida, K. & Nakanishi, H., 1 1 1984, In: Physical Review B. 30, 1, p. 122-133 12 p.

  研究成果: Contribution to journal › Article › 査読

  • superconductivity 100%
  • conduction electrons 60%
  • ferromagnetism 57%
  • solitary waves 47%
  • harmonics 40%
  171 被引用数 (Scopus)

• Superoxide production of human polymorphonuclear leukocytes stimulated by leukotriene B₄

  Sumimoto, H., Takeshige, K. & Minakami, S., 4 16 1984, In: BBA - Molecular Cell Research. 803, 4, p. 271-277 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Leukotriene B4 100%
  • Superoxides 81%
  • Neutrophils 63%
  • 8-(N,N-diethylamino)octyl-3,4,5-trimethoxybenzoate 63%
  • W 7 38%
  77 被引用数 (Scopus)

• Superoxide release and intracellular free calcium of calcium-depleted human neutrophils stimulated by N-formyl-methionyl-leucyl-phenylalanine

  Nakagawara, M., Takeshige, K., Sumimoto, H., Yoshitake, J. & Minakami, S., 9 14 1984, In: BBA - Molecular Cell Research. 805, 1, p. 97-103 7 p.

  研究成果: Contribution to journal › Article › 査読

  • N-Formylmethionine Leucyl-Phenylalanine 100%
  • Superoxides 72%
  • Neutrophils 56%
  • Calcium 49%
  • Peptides 20%
  44 被引用数 (Scopus)

• Symposium on mechanisms of host defense from fundamental and clinical medicine. 5. Genetic control of immune response in humans and its clinical significance

  Sasazuki, T., 12 1984, In: Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine. 73, 12, p. 1762-1767 6 p.

  研究成果: Contribution to journal › Review article › 査読

• Synthesis and crystal structure of binuclear iron(III) complex with N,N-bis(2-benzimidazolylmethyl)ethanolamine

  Nishida, Y., Shimo, H., Takahashi, K. & Kida, S., 1984, In: Memoirs of Faculty of Science, Kyushu　University,. Series C. 14, 2, p. 301-306 6 p.

  研究成果: Contribution to journal › Article

• Synthesis of (Aza)_n[3ⁿ]cyclophanes as host molecules

  Takemura, H., Suenaga, M., Sakai, K., Kawachi, H., Shinmyozu, T., Miyahara, Y. & Inazu, T., 3 1984, In: Journal of Inclusion Phenomena. 2, 1-2, p. 207-214 8 p.

  研究成果: Contribution to journal › Article › 査読

  • Benzene 100%
  • benzene 86%
  • macrocyclic compounds 79%
  • Macrocyclic Compounds 76%
  • potassium carbonate 74%
  35 被引用数 (Scopus)

• T-cell subsets regulating anti-acetylcholine-receptor-antibody formation in myasthenia gravis and characterization of suppressor T-cell factors involved

  Shinomiya, N., Yata, J. & Sasazuki, T., 11 1984, In: Clinical Immunology and Immunopathology. 33, 2, p. 182-190 9 p.

  研究成果: Contribution to journal › Article › 査読

  • Immunologic Suppressor Factors 100%
  • Myasthenia Gravis 66%
  • Cholinergic Receptors 63%
  • T-Lymphocyte Subsets 61%
  • Antibody Formation 51%
  8 被引用数 (Scopus)

• Tension and bending of finite thickness plates with a semi-elliptical surface crack

  Isida, M., Noguchi, H. & Yoshida, T., 11 1 1984, In: International Journal of Fracture. 26, 3, p. 157-188 32 p.

  研究成果: Contribution to journal › Article › 査読

  • Surface Crack 100%
  • Force Method 52%
  • Cracks 47%
  • Stress Intensity Factor 41%
  • Numerical Calculation 38%
  113 被引用数 (Scopus)

• Tension of a plate containing an embedded elliptical crack

  Isida, M. & Noguchi, H., 1 1 1984, In: Engineering Fracture Mechanics. 20, 3, p. 387-408 22 p.

  研究成果: Contribution to journal › Article › 査読

  • Tension 100%
  • Plate Like Crystal 81%
  • Force 70%
  • Cracks 70%
  • Stress intensity factors 51%
  77 被引用数 (Scopus)

• Tensor interactions and polarization phenomena in heavy-ion scattering

  Ohnishi, H., Tanifuji, M., Kamimura, M., Sakuragi, Y. & Yahiro, M., 3 12 1984, In: Nuclear Physics, Section A. 415, 2, p. 271-303 33 p.

  研究成果: Contribution to journal › Article › 査読

  • ion scattering 100%
  • heavy ions 73%
  • tensors 63%
  • polarization 44%
  • elastic scattering 37%
  70 被引用数 (Scopus)

• The accuracy of estimation of the body density in obese men

  Watanuki, S. & Iwanaga, K., 1984, In: Annals of Physiological Anthropology. 3, 2, p. 139-141 3 p.

  研究成果: Contribution to journal › Article › 査読

  Open Access

• The adsorption behavior of monoionic dyes at the aqueous solution/air interface

  UCHIzONO, Y., Shimada, E., Okayama, Y., Harada, Y., Aratono, M. & Motomura, K., 7 1984, In: Bulletin of the Chemical Society of Japan. 57, 7, p. 2005-2006 2 p.

  研究成果: Contribution to journal › Article › 査読

  • Adsorption Behavior 100%
  • Dye 64%
  • Aqueous Solution 53%
  • Surface Pressure 39%
  • Azo Dye 35%
  6 被引用数 (Scopus)

• The amino acid sequence of a small DNA binding protein from the archaebacterium Sulfolobus solfataricus

  Kimura, M., Kimura, J., Davie, P., Reinhardt, R. & Dijk, J., 10 15 1984, In: FEBS Letters. 176, 1, p. 176-178 3 p.

  研究成果: Contribution to journal › Article › 査読

  • Sulfolobus solfataricus 100%
  • Archaea 75%
  • DNA-Binding Proteins 69%
  • Lysine 60%
  • Amino Acid Sequence 57%
  44 被引用数 (Scopus)

• The amino acid sequence of two small ribosomal proteins from Bacillus stearothermophilus

  Tanaka, I., Kimura, M., Kimura, J. & Dijk, J., 1 30 1984, In: FEBS Letters. 166, 2, p. 343-346 4 p.

  研究成果: Contribution to journal › Article › 査読

  • Geobacillus stearothermophilus 100%
  • Ribosomal Proteins 82%
  • Amino Acid Sequence 60%
  • 4-(N,N-dimethylaminoazobenzene)-4'-isothiocyanate 28%
  • Protein 27%
  13 被引用数 (Scopus)

• The chemistry in the characterization and preparation of carbonaceous mesophase

  Mochida, I. & Korai, Y., 12 1 1984, In: Preprints Symposia. 29, 2, p. 355-367 13 p.

  研究成果: Contribution to journal › Article › 査読
  1 被引用数 (Scopus)

• The complete amino acid sequence of the ribosomal protein HS3 from Halobacterium marismortui, an archaebacterium

  Kimura, M. & Langner, G., 10 1 1984, In: FEBS Letters. 175, 2, p. 213-218 6 p.

  研究成果: Contribution to journal › Article › 査読

  • Haloarcula marismortui 100%
  • Ribosomal Proteins 65%
  • Archaea 63%
  • Amino Acid Sequence 48%
  • Geobacillus stearothermophilus 40%
  14 被引用数 (Scopus)

• The complete amino acid sequences of ribosomal proteins L17, L27, and S9 from Bacillus stearothermophilus

  KIMURA, M. & CHOW, C. K., 3 1984, In: European Journal of Biochemistry. 139, 2, p. 225-234 10 p.

  研究成果: Contribution to journal › Article › 査読

  • ribosomal proteins L27 100%
  • ribosomal protein L17 97%
  • ribosomal protein S9 96%
  • Geobacillus stearothermophilus 72%
  • Amino Acid Sequence 43%
  13 被引用数 (Scopus)

• The effects of exercise and environmental conditions on prediction equations of maximal oxygen intake

  Watanuki, S. & Yamasaki, K., 1984, In: Annals of Physiological Anthropology. 3, 1, p. 47-61 15 p.

  研究成果: Contribution to journal › Article › 査読
  3 被引用数 (Scopus)

• The effects of turbulence on the mean flow past two-dimensional rectangular cylinders

  Nakamura, Y. & Ohya, Y., 12 1984, In: Journal of Fluid Mechanics. 149, HY7, p. 255-273 19 p.

  研究成果: Contribution to journal › Article › 査読

  • two dimensional flow 100%
  • Turbulence 72%
  • turbulence 61%
  • vortex shedding 48%
  • Vortex shedding 46%
  96 被引用数 (Scopus)

• The gene frequency of SB alleles in the Japanese population

  NISHIMURA, YASUHARU., YASUDA, NORIKAZU., SASAZUKI, TAKEHIKO. & SHAW, STEPHEN., 1 1 1984, In: Tissue antigens. 23, 5, p. 314-315 2 p.

  研究成果: Contribution to journal › Article › 査読

  • Gene Frequency 100%
  • Alleles 74%
  • Population 40%
  11 被引用数 (Scopus)

• The genetic studies of familial amyloid polyneuropathy in the Arao district of Japan: II. Studies of genetic markers in blood

  Sakoda, S., Suzuki, T., Higa, S., Ueji, M., Kishimoto, S., Wada, Y., Hayashi, A., Matsumoto, H., Miyazaki, T., Sasazuki, T., Nishimura, K., Egami, M., Omoto, K., Tokunaga, K., Takaba, Y. & Nakajima, A., 3 1984, In: The Japanese Journal of Human Genetics. 29, 1, p. 51-57 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Familial Amyloid Neuropathies 100%
  • Genetic Markers 66%
  • Japan 52%
  • Phenotype 38%
  • Phosphoglucomutase 25%
  1 被引用数 (Scopus)

• The human t cell antigen receptor is encoded by variable, diversity, and joining gene segments that rearrange to generate a complete V gene

  Siu, G., Clark, S. P., Yoshikai, Y., Malissen, M., Yanagi, Y., Strauss, E., Mak, T. W. & Hood, L., 6 1984, In: Cell. 37, 2, p. 393-401 9 p.

  研究成果: Contribution to journal › Article › 査読

  • Antigen Receptors 100%
  • Complementary DNA 83%
  • Antigen 67%
  • Nucleotide 65%
  • RNA (Poly(A)) 59%
  182 被引用数 (Scopus)

• The linkage of teleost skin keratan sulfate to protein

  Ito, M. & Yamagata, T., 10 16 1984, In: BBA - General Subjects. 801, 3, p. 381-387 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Keratan Sulfate 100%
  • N-Acetyl-D-Glucosamine 57%
  • Asparagine Residue 54%
  • Acetylglucosamine 50%
  • endo-alpha-sialidase 48%
  2 被引用数 (Scopus)

• The Mode of Ovarian Maturation and Spawning of the Landlocked Dwarf Ayu Plecoglossus altivelis in Lake Biwa

  Matsuyama, M. & Matsuura, S., 1984, In: NIPPON SUISAN GAKKAISHI. 50, 2, p. 225-231 7 p.

  研究成果: Contribution to journal › Article › 査読

  • Plecoglossus altivelis 100%
  • maturation 68%
  • spawning 66%
  • egg 66%
  • lakes 56%
  6 被引用数 (Scopus)

• The morphological factors affecting pulmonary diffusing capacity under various conditions of ambient temperature and energy expenditure

  Yasukouchi, A., Inoue, K., Iwanaga, K., Koya, Y. & Sato, M., 1984, In: Annals of Physiological Anthropology. 3, 2, p. 144-145 2 p.

  研究成果: Contribution to journal › Article › 査読
  2 被引用数 (Scopus)

• The Multiple Spawning in Landlocked Dwarf Ayu Plecoglossus altivelis in Lake Biwa

  Matsuyama, M. & Matsuura, S., 1984, In: NIPPON SUISAN GAKKAISHI. 50, 2, p. 183-187 5 p.

  研究成果: Contribution to journal › Article › 査読

  • Plecoglossus altivelis 100%
  • spawning 66%
  • ovulation 63%
  • lakes 56%
  • fish 41%
  5 被引用数 (Scopus)

• The natural history of nonalcoholic cirrhosis

  Hashizume, M., Inokuchi, K., Beppu, K., Koyanagi, N., Nagamine, K., Sugimachi, K. & Hirose, S., 10 1 1984, In: Gastroenterologia Japonica. 19, 5, p. 430-435 6 p.

  研究成果: Contribution to journal › Article › 査読

  • Varicose Veins 100%
  • Fibrosis 65%
  • Hepatocellular Carcinoma 35%
  • Hemorrhage 28%
  • Esophageal and Gastric Varices 26%
  13 被引用数 (Scopus)

• Theoretical World-Wide Sea Level Change Associated With Non-Newtonian Flow In The Upper Mantle

  Nakada, M., 1 1984, In: journal of physics of the earth. 32, 5, p. 435-447 13 p.

  研究成果: Contribution to journal › Article › 査読

  • sea level change 100%
  • upper mantle 91%
  • world 55%
  • sea level 37%
  • Holocene 37%

• Theory of Itinerant Ferromagnetic Superconductor

  Nakanishi, H., 1 1 1984, In: Journal of the Physical Society of Japan. 53, 12, p. 4332-4343 12 p.

  研究成果: Contribution to journal › Article › 査読

  • ferromagnetism 100%
  • superconductivity 86%
  • free energy 83%
  • transition temperature 81%
  • specific heat 79%
  4 被引用数 (Scopus)

• Theory of oviposition strategy of parasitoids. I. Effect of mortality and limited egg number

  Iwasa, Y., Suzuki, Y. & Matsuda, H., 1 1 1984, In: Theoretical Population Biology. 26, 2, p. 205-227 23 p.

  研究成果: Contribution to journal › Article › 査読

  • oviposition 100%
  • parasitoid 97%
  • egg 64%
  • parasitoids 61%
  • mortality 51%
  218 被引用数 (Scopus)

• The phase anomaly for elastic and inelastic scattering of the ¹⁹F + ¹²C system

  Tachikawa, T., Kato, N., Fujita, H., Kimura, K., Sugimitsu, T., Morita, K., Anai, K., Inoue, T., Inoue, H., Nakajima, Y., Tanaka, M. H. & Kubono, S., 5 17 1984, In: Physics Letters B. 139, 4, p. 267-272 6 p.

  研究成果: Contribution to journal › Article › 査読

  • elastic scattering 100%
  • inelastic scattering 99%
  • anomalies 89%
  • form factors 53%
  • angular distribution 48%
  6 被引用数 (Scopus)

• The primary structure of the DNA-binding protein II from Clostridium pasteurianum

  Kimura, M., Kimura, J. & Zierer, R., 10 1 1984, In: FEBS Letters. 175, 2, p. 208-212 5 p.

  研究成果: Contribution to journal › Article › 査読

  • Clostridium 100%
  • DNA-Binding Proteins 89%
  • Geobacillus stearothermophilus 61%
  • glycyl-phenylalanyl-glycine 48%
  • 4-(N,N-dimethylaminoazobenzene)-4'-isothiocyanate 43%
  6 被引用数 (Scopus)

• The reproductive cycle of the queenless ant pristo Myrmex pungens

  Itow, T., Kobayashi, K., Kubota, M., Ogata, K., Imai, H. T. & Crozier, R. H., 3 1984, In: Insectes Sociaux. 31, 1, p. 87-102 16 p.

  研究成果: Contribution to journal › Article › 査読

  • reproductive cycle 100%
  • ant 85%
  • Formicidae 63%
  • queen insects 51%
  • organ 44%
  70 被引用数 (Scopus)

• Thermal Oxidation of GaP

  Kato, Y., Geib, K. M., Gann, R. G., Brusenback, P. R. & Wilmsen, C. W., 4 1984, In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 2, 2, p. 588-592 5 p.

  研究成果: Contribution to journal › Article › 査読

  • Oxidation 100%
  • voids 98%
  • Oxides 97%
  • oxidation 83%
  • Oxide films 70%
  6 被引用数 (Scopus)

• Thermodynamic consideration of the mixed micelle of surfactants

  Motomura, K., Yamanaka, M. & Aratono, M., 12 1 1984, In: Colloid & Polymer Science. 262, 12, p. 948-955 8 p.

  研究成果: Contribution to journal › Article › 査読

  • Micelles 100%
  • micelles 72%
  • Surface active agents 72%
  • surfactants 63%
  • Thermodynamics 56%
  377 被引用数 (Scopus)

• Thermodynamic study of the adsorption of octylsulfinylethanol at the micellar solution/air interface

  Motomura, K., Iwanaga, S. I., Uryu, S., Matsukiyo, H., Yamanaka, M. & Matuura, R., 3 1 1984, In: Colloids and Surfaces. 9, 1, p. 19-31 13 p.

  研究成果: Contribution to journal › Article › 査読

  • Critical micelle concentration 100%
  • Micelles 89%
  • Adsorption 86%
  • Thermodynamics 76%
  • Surface active agents 64%
  33 被引用数 (Scopus)

• Thermostable valyl-tRNA, isoleucyl-tRNA and methionyl-tRNA synthetases from an extreme thermophile Thermus thermophilus HB8: protein structure and Zn²⁺ binding

  Kohda, D., Yokoyama, S. & Miyazawa, T., 8 20 1984, In: FEBS Letters. 174, 1, p. 20-23 4 p.

  研究成果: Contribution to journal › Article › 査読

  • Methionine-tRNA Ligase 100%
  • Thermus thermophilus 87%
  • Transfer RNA 61%
  • Protein Structure 55%
  • Isoleucine-tRNA Ligase 51%
  15 被引用数 (Scopus)