نتایج جستجو برای: including bronze

تعداد نتایج: 976641  

In this paper, the microstructure and mechanical properties of the plain carbon steel-bronze interface of explosive welding and rolling were investigated. Explosive connection was done at two stop distances and with two different thicknesses of explosive material. Rolling of the welded composite was done at both ambient and preheated temperatures of 300 °C and with a constant thickness reductio...

Journal: :Proceedings. Biological sciences 2011
Naomi E Langmore Martin Stevens Golo Maurer Robert Heinsohn Michelle L Hall Anne Peters Rebecca M Kilner

Coevolution between antagonistic species has produced instances of exquisite mimicry. Among brood-parasitic cuckoos, host defences have driven the evolution of mimetic eggs, but the evolutionary arms race was believed to be constrained from progressing to the chick stage, with cuckoo nestlings generally looking unlike host young. However, recent studies on bronze-cuckoos have confounded theoret...

1999
Renate MuÈller Edward C. Sisler Margrethe Serek

In an interior environment, the display life of miniature potted roses (Rosa hybrida L.) `Bronze' was 7 days, while that of `Vanilla' was 23 days. Although there was a substantial difference in ethylene production between flowers from two cultivars, there was no difference in binding site activity (kd ˆ 0.14 nl lÿ1). Pre-treatment with the ethylene action inhibitor 1-methylcyclopropene (1-MCP) ...

Journal: :The Review of scientific instruments 2007
M Abrecht A Adare J W Ekin

We present magnetization and magnetoresistance data at liquid-helium and liquid-nitrogen temperatures for wire materials commonly used for instrumentation wiring of specimens, sensors, and heaters in cryogenic probes. The magnetic susceptibilities in Systeme International units at 4.2 K were found to be: Manganin 1.25x10(-2), Nichrome 5.6x10(-3), and phosphor bronze -3.3x10(-5), indicating that...

2012
Amy Nicodemus

Recent excavations at Pecica Şanţul Mare from 2006-2009 have produced a large and representative faunal assemblage from Dacian and Bronze Age contexts. In both periods, livestock husbandry was by far the most important source of meat, with hunting and trapping game, F shing, and collecting mollusks contributing secondarily. However, there are signiF cant diw erences between Iron and Bronze Age ...

Journal: :Medical History 1970
C P Warren

INTRODUCTION CIVILIZATION rose to two great heights in ancient Greece, namely in the Bronze age and in the later Classical period. In the latter medicine advanced considerably and culminated in the work of Hippocrates. Knowledge of medicine in the Greek Bronze age depended on the study of Homer until this century, when work in the fields of archaeology and philology provided more facts. This wo...

2017
Lele Ren Xin Li Lihong Kang Katherine Brunson Honggao Liu Weimiao Dong Haiming Li Rui Min Xu Liu Guanghui Dong

Reconstructing ancient diets and the use of animals and plants augment our understanding of how humans adapted to different environments. Yunnan Province in southwest China is ecologically and environmentally diverse. During the Neolithic and Bronze Age periods, this region was occupied by a variety of local culture groups with diverse subsistence systems and material culture. In this paper, we...

Journal: :Dalton transactions 2014
Hailong Fei Huan Li Zhiwei Li Wenjing Feng Xin Liu Mingdeng Wei

A simple and versatile method for preparation of new crystalline graphite nitrate-like ammonium vanadium bronze (NH4)0.19V2O5·0.44H2O nano-microstructures is developed via a simple hydrothermal route following heat treatment. (NH4)0.19V2O5·0.44H2O platelets are tested as a novel high-energy cathode material for sodium-ion batteries. The enhancement of electrochemical performance for a (NH4)0.19...

2017
Josmael Corso Diego Hepp Mônica C. Ledur Jane O. Peixoto Nelson J. R. Fagundes Thales R. O. Freitas

Domestic turkeys present several color phenotypes controlled by at least five genetic loci, but only one of these has been identified precisely: the bronze locus, which turned out to be the melanocortin-1 receptor (MC1R) gene. MC1R variation is important for breeders interested in maintaining or developing different color varieties. In this study, we sequenced most of the MC1R gene from 16 Whit...

2014
Sara Goidanich Davide Gulotta Laura Brambilla Ruben Beltrami Paola Fermo Lucia Toniolo

Traditional electrochemical techniques, such as linear polarization resistance (Rp), and electrochemical impedance spectroscopy (EIS), cannot be applied to gilded bronzes, as it may not be possible to interpret the results obtained due to the bimetallic nature of the studied material. The measurement of the macrocouple current generated by the gold/bronze galvanic couple can be used as an indic...

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