نتایج جستجو برای: آلیاژ al zn mg cu

تعداد نتایج: 816784  

Journal: :Metals 2023

The application of high-strength Al-Zn-Mg-Cu alloy is seriously limited because its poor formability. A novel electroshock treatment (EST) technique with low frequency combined tensile deformation was proposed to address the issues plasticity and formability alloy, which could revolutionize conventional plastic forming methods realize near-room temperature complex components. examined in this w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1389

به منظور دستیابی به استحکام و دمای کارکرد بالاتر، خانواده ای از آلیاژهای روی-آلومینیوم تحت عنوان آلیاژهای za در سه دهه ی اخیر گسترش یافته اند. در این بین آلیاژ 27-za بالاترین استحکام، پایین ترین چگالی و بهترین خواص سطحی در این گروه را دارد. تحقیقات نشان داده است که حضور مس در مقادیر بالای 3-2 درصد وزنی به خصوص در حالت ریختگی در ماسه، موجب بهبود خواص سطحی این آلیاژها می شود. در این راستا و به من...

The contamination of riverbed sediments by heavy metals has assumedserious problems due to their toxicity and accumulative behavior. The present studyinvestigated the concentrations of heavy metals from the bottom sediments of ShitalakhyaRiver to understand the level of contamination and their distribution. The averageconcentrations of heavy metals Al, K, Ca, Mg, Fe, As, Cu, Co, Cr, and Zn are ...

Journal: Pollution 2016

The contamination of riverbed sediments by heavy metals has assumedserious problems due to their toxicity and accumulative behavior. The present studyinvestigated the concentrations of heavy metals from the bottom sediments of ShitalakhyaRiver to understand the level of contamination and their distribution. The averageconcentrations of heavy metals Al, K, Ca, Mg, Fe, As, Cu, Co, Cr, and Zn are ...

Journal: :Poultry science 2005
M Skrivan V Skrivanová M Marounek

An experiment was conducted to evaluate the effect of dietary content and combinations of Zn, Fe, and Cu on deposition of these elements in egg components, liver, and excreta. Excreta were applied as a manure to a lawn, and 3 mo later soil and herbage samples were taken and analyzed. The experiment comprised 144 hens in 8 groups. The basal diet contained Zn, Fe, and Cu at 63.4, 92.8, and 9.0 mg...

Journal: :Journal of animal science 2012
P Bikker A W Jongbloed J T N M Thissen

A meta-analysis was conducted to determine the effect of microbial phytase in pig diets on digestibility and bioavailability of Cu and Zn. Studies (n = 22) into effects of microbial phytase on digestibility and plasma levels of Cu and Zn were included in a dataset and regression analysis was performed to quantify the effect of Aspergillus niger derived 3-phytase in studies (n = 14) with a maxim...

Journal: :Nutrition Journal 2005
Monica Iskandar Eleonora Swist Keith D Trick Bingtuan Wang Mary R L'Abbé Jesse Bertinato

BACKGROUND Small increases in zinc (Zn) consumption above recommended amounts have been shown to reduce copper (Cu) status in experimental animals and humans. Recently, we have reported that copper chaperone for Cu/Zn superoxide dismutase (CCS) protein level is increased in tissues of overtly Cu-deficient rats and proposed CCS as a novel biomarker of Cu status. METHODS Weanling male Wistar ra...

Journal: :The Science of the total environment 2009
Beatrice Bocca Giovanni Forte Francesco Petrucci Sergio Costantini Paolo Izzo

The aim of this study was to quantify metals contained in and leached from different types of rubber granulates used in synthetic turf areas. To investigate the total content of metals, ca 0.5 g of material was added with HNO(3), HF and HClO(4) and microwave digested with power increasing from 250 W to 600 W. Leachates were prepared by extraction of about 5.0 g of material at room temperature f...

Journal: :Journal of environmental biology 2011
Ai-Qing Zhao Qiong-Li Bao Xiao-Hong Tian Xin-Chun Lu Jeff Gale William

A nutrient solution experiment was conducted to investigate the effect of Fe and Zn supply on Fe, Zn, Cu, and Mn concentrations in wheat plants. The experiment used a factorial combination of two Fe levels (0 and 5 mg l(-1)) and three Zn levels (0, 0.1 and 10 mg I(-1)). The supply of Fe (5 mg l(-1)) and Zn (0.1 mg l(-1)) increased plant dry weight and leaf chlorophyll content compared to the Fe...

Journal: :Acta Materialia 2022

Al-Zn-Mg-Cu alloys with a low Zn/Mg ratio have attracted considerable attention in recent years as result of an attractive property portfolio based on their ability age hardening via the precipitation T-Mg32(Al,Zn)49 phase and its precursors. In this study, quench rate sensitivity Al-Mg-Zn-Cu alloy is investigated compared to commercial reference (AA7075) showing high ratio. The impact five dif...

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