نتایج جستجو برای: including total hardness

تعداد نتایج: 1690301  

2009
Kentaro Murakami Satoshi Sasaki Yoshiko Takahashi Kazuhiro Uenishi Tomoko Watanabe Toshiyuki Kohri Mitsuyo Yamasaki Reiko Watanabe Keiko Baba Katsumi Shibata Toru Takahashi Hitomi Hayabuchi Kazuko Ohki Junko Suzuki

Recent evidence suggests that voluntary rhythmic movements such as chewing may increase blood serotonin and subsequently brain serotonin, which in turn acts to alleviate premenstrual symptoms. In this observational cross-sectional study, we tested the hypothesis that hardness (difficulty of chewing) of the habitual diet (i.e. dietary hardness) is associated with decreased premenstrual symptoms....

Journal: :تحقیقات نظام سلامت 0
اصغر ابراهیمی عضو هیأت علمی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی، یزد، ایران. محمدحسن احرامپوش دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی، یزد، ایران. محمدتقی قانعیان استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی، یزد، ایران. مجتبی داودی دانشجوی دکتری، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. حسن هاشمی عضو هیأت علمی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران. شاهین بهزادی کارشناس، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران.

background: groundwater is the most important source of water supply in industries and agricultures; therefore the need to protect this valuable resource against pollution is felt more than ever. in this study, the possible impact of yazd municipal solid waste landfill was investigated on the chemical quality of the area’s groundwater. methods: groundwater samples were collected from three well...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2014
E C Oliveira-Filho N R Caixeta N C S Simplício S R Sousa T P Aragão D H F Muniz

Water hardness is a property depending on the presence of alkaline earth metals, mainly calcium and magnesium. Among the strategies for water quality monitoring, ecotoxicological assays are performed to minimize impacts and classify water bodies. For these laboratory evaluations parameters are previously defined in the guidelines, including water hardness for both cultivation and testing medium...

2004
R Mungkung

The effects of humic acid and water hardness on acute cadmium toxicity and accumulation were determined, using Puntius gonionotus Bleeker. The toxicities were expressed as the median lethal concentration (LC50) and the 96-h LC50 value of cadmium was 2.30 mg/L. Three different types of water hardness were used: soft, moderately-hard and hard, with total hardness concentrations of 55, 113, and 22...

2014
Ramesh Chandra

Experiments were carried out on the survival and growth of Rasbora daniconius, Puntius ticto and Puntius conchonius. The motivation of the study was to obtain information for growing the fish on a commercial scale for their use as biological control agents against mosquito larvae. The effects of temperature, total hardness, DO, pH and feed on the growth of fish were also investigated. Excessive...

2006
Rong Wang Weibiao Zhou Mia Isabelle

Sensory evaluation techniques and instrumental analyses were used to investigate the changes in crumb appearance, texture properties and taste profile of bread containing tea antioxidants. Bread incorporating green tea extract (GTE) at the levels of 1.5 and 5.0 g/kg flour was analyzed concurrently with the control in a random order by panelists. Sensory analysis was carried out through a descri...

2009
Takashi Yamamoto Masayuki Yamamoto Kensuke Miyahara Tatsuya Ishibashi

−A newly developed hardness test based on equivalent indentation depth is currently expected to be the only hardness test method that enables seamless evaluations of hardness across different hardness scales in all load ranges from nanoscopic to macroscopic in an industrial friendly manner because the new method is free from the shortcomings of the instrumented indentation method, which require...

2007
Xiaolu Pang Kewei Gao Huisheng Yang Lijie Qiao Yanbin Wang A. A. Volinsky

Chromium oxide coatings are chemically inert, have high mechanical strength, hardness and good optical characteristics; therefore, they have been widely used in many applications including corrosion protection, wear resistance, electronics, and optics. Cr2O3 is well suited for wear resistance applications, as it is one of the hardest oxides with 29.5 GPa hardness. Several deposition techniques ...

Journal: :Acta biomaterialia 2009
Sheng Lin-Gibson Lipiin Sung Aaron M Forster Haiqing Hu Yajun Cheng Nancy J Lin

Multicomponent formulations coupled with complex processing conditions govern the final properties of photopolymerizable dental composites. In this study, a single test substrate was fabricated to support multiple formulations with a gradient in degree of conversion (DC), allowing the evaluation of multiple processing conditions and formulations on one specimen. Mechanical properties and damage...

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