Studies on Nickel and Cobalt in Mineral Springs. I. Nickel Content of Acid Vitriol Springs in Japan
نویسندگان
چکیده
منابع مشابه
Force characteristics of nickel-titanium open-coil springs.
INTRODUCTION The objective of this study was to quantify the properties of commercially available nickel-titanium open-coil springs. METHODS Eleven springs from 3 manufacturers were tested 5 times over a 12-week period. A universal testing machine was used to measure the force generated when open-coil springs were compressed to half of their original length and then gradually allowed to decom...
متن کاملThe content of cadmium, cobalt and nickel in laryngeal carcinoma
INTRODUCTION The aim of the study was to determine the content of cadmium (Cd), cobalt (Co) and nickel (Ni) in the samples from laryngeal carcinoma in comparison with the level of these elements in the samples of healthy mucous membrane from the same larynx. MATERIAL AND METHODS The study was conducted on 43 patients with laryngeal carcinoma. The levels of Cd, Co, and Ni in carcinoma and heal...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
The effects of aging process and preactivation on mechanical properties of nickel-titanium closed coil springs
BACKGROUND The most favorable feature of nickel-titanium (Ni-Ti) alloys in orthodontics is producing constant forces in a wide deformation range. Ni-Ti closed coils produce compressive strength and can be used for several purposes such as space closure. The aim of this study was to evaluate the effects of the aging process (temperature changes and prolonged strain) on Ni-Ti closed coils and to ...
متن کاملSuperelasticity and force plateau of nickel-titanium springs: an in vitro study
OBJECTIVE This paper analyzed whether nickel-titanium closed coil springs (NTCCS) have a different superelastic (SE) behavior according to activation and whether their force plateau corresponds to that informed by the manufacturer. METHODS A total of 160 springs were divided into 16 subgroups according to their features and activated proportionally to the length of the extensible part (NiTi) ...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1943
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.18.201