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Titelei

作者信息未提供1995-04-01Applied Rheology

Sampling Devices for the Measurement of Seed Rain and Hydrochory in Rivers

Beth A. Middleton1995-04-01Bulletin of the Torrey Botanical Club

the bucket with bottom removed, and two 2-liter beverage bottles for flotation. The total cost of one pair of seed rain and hydrochore traps was less than $1.00. The seed dispersal estimates from the aquatic seed traps reflected the relative numbers of species and seeds dispersed in aquatic systems. A test of the effi…

Microplastics and Plastic PollutionDiatoms and Algae ResearchWater Quality and Resources Studies

Average widths of grain boundaries in nanophase alloys synthesized by mechanical attrition

Brent Fultz、Hisashi Kuwano、Hao Ouyang1995-04-01Journal of Applied Physics

Many binary ferrous alloys were synthesized by mechanical attrition in a high-energy ball mill. X-ray diffractometry and transmission electron microscopy were used to measure grain sizes, which were as small as a few nanometers in several alloys. The nanocrystalline alloys showed new features in their Mössbauer spectr…

Ion-surface interactions and analysisAdvanced materials and compositesMicrostructure and mechanical properties

Structural changes ofZrO2-CeO2solid solutions around the monoclinic-tetragonal phase boundary

Masatomo Yashima、T. Hirose、Susumu Katano 等 6 位作者1995-04-01Physical review. B, Condensed matter

High-resolution neutron-diffraction experiments have been performed to study the structural changes of ${\mathrm{ZrO}}_{2}$ induced by ${\mathrm{CeO}}_{2}$ doping. The crystal structures of monoclinic [P${2}_{1}$/c, Z=4] and tetragonal [P${4}_{2}$/nmc, Z=2] phases for ${\mathrm{ZrO}}_{2}$--X mol % ${\mathrm{CeO}}_{2}$…

Advanced Condensed Matter PhysicsNuclear materials and radiation effectsNuclear Materials and Properties

Vibrational analysis of poly(L‐lactic acid)

G Kister、G. Cassanas、Michel Vert 等 5 位作者1995-04-01Journal of Raman Spectroscopy

Abstract The Raman and IR spectra of poly( L ‐lactic acid) in the amorphous and semicrystalline states were recorded from 3600 to 100 cm −1 . Complete vibrational assignments are proposed. In the Raman spectra, the splittings of the v C=O stretching and the δCCO bend are characteristic of the crystalline phase and the…

Collagen: Extraction and CharacterizationFood composition and propertiesbiodegradable polymer synthesis and properties