Fe-rich particles influenced secondary crack characteristics in an Al-Zn-Mg-Cu alloy extrusion plate with high zinc content

2020 ◽  
Vol 186 ◽  
pp. 259-262
Author(s):  
Kai Wen ◽  
Baiqing Xiong ◽  
Weicai Ren ◽  
Youzhi Tong ◽  
Xiwu Li ◽  
...  
Keyword(s):  
Zinc Content ◽  
Secondary Crack ◽  
Cu Alloy ◽  
High Zinc

scholarly journals Evaluation of Recombinant Inbred Lines for Higher Iron and Zinc Content Along with Yield and Quality Parameters in Rice (Oryza sativa L.)

2020 ◽  
Author(s):  
Maini Bhattacharjee ◽  
Kasturi Majumder ◽  
Sabyasachi Kundagrami ◽  
Tapash Dasgupta
Keyword(s):  
Iron Content ◽  
Oryza Sativa L ◽  
Recombinant Inbred Lines ◽  
Zinc Content ◽  
Correlation Study ◽  
Inbred Lines ◽  
Quality Parameters ◽  
Fe Content ◽  
High Zinc ◽  
Iron And Zinc

Rice is one of the most important staple food crops for billions of people throughout the world. It is the cheapest source of dietary energy, protein and minerals for people but poor in micronutrients such as Fe and Zn to eliminate “hidden hunger”. In the present study, a population of 126recombinant inbred lines developed from a cross between Lemont X Satabdi (IET 4786) were used to identify high iron and zinc content coupled with yield and yield attributing traits. Analysis of Variance revealed that a considerable variation in iron and zinc existed among genotypes. The correlation study revealed that number of filled grain was positively associated with panicle length and yield per plant and number of panicles, but no significant positive correlation was observed between grain zinc content and iron content. Zinc and iron content of rice was estimated using Atomic Absorption Spectrophotometer and the samples were prepared by tri-acid digestion method. Among RIL lines, the line 57, 97,120, 48, 99, 124 contained more than 30 ppm Fe and the lines 24, 6, 9, 23, 29, 125 were found to possess more than 50 ppm Zn. The lines 9,6,48 and 57 were recorded to be high yielding with high zinc and Fe content in grain and in future these four lines look promising for multi location trial also. These high Fe and Zn content genotypes can be utilized in future breeding programme as a donor or good source for bio fortification of rice genotypes.

Effect of ZnO on Thermo Physical and Structural Properties of Lithium Zinc Silicate Glass-Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 947-952 ◽  
Author(s):  
Govind P. Kothiyal ◽  
B.I. Sharma ◽  
V.K. Shrikhande ◽  
Madhumita Goswami ◽  
J.V. Yakhmi
Keyword(s):  
Glass Matrix ◽  
Glass Ceramics ◽  
Zinc Content ◽  
Zinc Silicate ◽  
Remarkable Difference ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Zinc ◽  
Controlled Nucleation ◽  
Thermo Physical Properties

Lithium zinc silicate (LZS) glass-ceramics with compositions: (a) Li2O-ZnO-SiO2-Na2OB2O3- P2O5 and (b) Li2O-ZnO-SiO2-K2O-Al2O3-B2O3-P2O5 have been prepared by controlled nucleation and crystallization. The effect of ZnO/(ZnO+SiO2) ratio on various thermo-physical properties was investigated by changing the ratio from 0.1 to 0.31 in the case of (a). Different crystalline phases have been identified by X-ray diffraction studies in glass-ceramics including cristobalite, Li3Zn0.5SiO4 and Li2SiO3. Density ( r) was found to increase from 2.62 to 2.82 gm cm-3 while microhardness (VHN) decreased from 6.56 to 5.79 GPa with increase in ZnO/(ZnO+SiO2) ratio in the glass-ceramics. Average thermal expansion coefficient (TEC) in the temperature range 30 to 450oC increased from 125x10-7 to 185x10-7 /oC. The increase in TEC and decrease in microhardness are thought to be due to the formation of different phases, which in turn influence the rigidity/bonding in the glass-ceramics. A remarkable difference in the microstructure close to interface of the glass-ceramics to Cu seal was seen in both the cases [high ZnO content (a) of ZnO/(ZnO+SiO2) ratio 0.31 and low ZnO content (b) of ZnO/(ZnO+SiO2) ratio 0.024]. Both the microstructures showed globally two contrast phases of bright and dark dispersed in the glass matrix. An interesting dandritic phase observed towards core in the microstructure for the high zinc content is not seen in the microstructure for low zinc content glass-ceramic. The seal withstands a vacuum of ~ 10-6 torr at helium leak rate of 3x10-10 torr litre/sec.

scholarly journals Monoclonal antibodies to a zinc-binding protein of rat Paneth cells.

1994 ◽  
Vol 42 (4) ◽  
pp. 467-472 ◽  
Author(s):  
M Sawada ◽  
Y Horiguchi ◽  
P Abujiang ◽  
N Miyake ◽  
Y Kitamura ◽  
...  
Keyword(s):  
Monoclonal Antibodies ◽  
Mononuclear Cells ◽  
Binding Protein ◽  
Paneth Cell ◽  
Zinc Content ◽  
Paneth Cells ◽  
Zinc Binding ◽  
Positive Staining ◽  
High Zinc ◽  
And Function

Paneth cells are morphologically well characterized but their function has been not elucidated. Previously, we identified and purified a 90 KD zinc-binding protein (ZBPP-1) in rat intestine that was localized to Paneth cell granules, consistent with their high zinc content. To further elucidate the structure and function of ZBPP-1, we immunized Balb/c mice with purified ZBPP-1 and identified four independent monoclonal antibodies (MAb) producing MAb ZIP-1 (IgM), ZIP-2 (IgG1), ZIP-3 (IgM), and ZIP-4 (IgM). Immunohistochemistry (IHC) and immunoelectron microscopy (IEM) with these MAb showed positive staining of Paneth cell cytoplasmic granules. MAb ZBPP-1 also stained a population of mononuclear cells in the lamina propria of digestive tract mucosa and a few cells in spleen, presumably a subset of macrophages. These MAb will provide a useful tool to study the function of Paneth cells in human health and disease, since they cross-reacted with human intestinal Paneth cells and mucosal mononuclear cells.

Effects of Nitrogen on Zinc Uptake, Accumulation and Partitioning of Wheat

2013 ◽  
Vol 316-317 ◽  
pp. 250-253
Author(s):  
Hong Chang ◽  
Xin Bin Zhou ◽  
Shu Hui Yu ◽  
Yong Xiang Zhou
Keyword(s):  
Nitrogen Fertilizer ◽  
Zinc Content ◽  
Culture Conditions ◽  
Zinc Uptake ◽  
Nitrogen Application ◽  
High Zinc ◽  
Grain Zinc ◽  
Zinc Fertilizer ◽  
Zinc Application ◽  
Pot Culture

Effects of nitrogen on uptake, accumulation and partitioning of zinc throughout the development of wheat were studied under pot-culture conditions. The results showed that under low zinc application (0.2 mg kg-1) the grain zinc content increased by 140% when nitrogen fertilizer increased from 50 mg kg-1 to 150 mg kg-1. Under high zinc application (5 mg kg-1) the grain zinc content increased by 61%. Increasing nitrogen application under low zinc fertilizer, the grain zinc mainly comes from the root zinc uptake. While increasing nitrogen application under high zinc fertilizer, the grain zinc mainly comes from the straw zinc remobilization.

scholarly journals The effects of zinc biofortification of seeds and NPK fertilizer application on the growth and yield of sesame (Sesamum indicum L.)

2021 ◽  
Vol 117 (1) ◽  
pp. 1
Author(s):  
Ehiokhilen Kevin EIFEDIYI ◽  
Grace Adejoke ILORI ◽  
Henry Emeka AHAMEFULE ◽  
Abduquadir Yusuf IMAM
Keyword(s):  
Block Design ◽  
Growth Yield ◽  
Zinc Content ◽  
Fertilizer Application ◽  
Growth And Yield ◽  
High Yield ◽  
High Zinc ◽  
Npk Fertilizer ◽  
Four Levels ◽  
Cropping Seasons

<p>Soils of the southern Guinea savanna zone of Nigeria are inherently infertile due to shortened fallow period and the continuous use of inorganic fertilizer which depletes the soil of micronutrients such as zinc over time. A field trial was carried out at the Teaching and Research Farm of the University of Ilorin, Nigeria during the 2016 and 2017 cropping seasons to evaluate the effect of zinc and NPK fertilizer on the growth, yield and zinc concentration of seeds of sesame. The experiment was laid out as a factorial fitted into a randomized complete block design (RCBD), replicated thrice. The treatment consisted of four levels of ZnSO<sub>4</sub> (0, 5, 10 and 15 kg ha<sup>-1</sup>) and four levels of NPK 15:15:15 (0, 100, 200 and 300 kg ha<sup>-1</sup>). Data collected were subjected to analysis of variance (ANOVA) and means were separated using new Duncan multiple range test at 5 % level of probability. Results obtained showed significant effects of Zn and NPK rates on plant height, number of leaves, yield per plot and yield per hectare. The application of 15 kg ha<sup>-1</sup> Zn and 300 kg ha<sup>-1</sup> (15:15:15) NPK resulted in high yield and high zinc content of seeds.</p>

Higher Bioavailability of Organic Bound Zinc from High Zinc-Enriched Fungi

2014 ◽  
Vol 84 (5-6) ◽  
pp. 277-285
Author(s):  
Xin-Guo Zhang ◽  
Yi-Nan Peng ◽  
Xiao-Ru Li ◽  
Guo-Di Ma ◽  
Ming-Gang Wang
Keyword(s):  
Natural Environment ◽  
Zinc Content ◽  
Absorption Spectrometry ◽  
Relative Bioavailability ◽  
Time Curve ◽  
Zinc Gluconate ◽  
High Zinc ◽  
The Mean ◽  
Dry Cell ◽  
Interesting Alternative

Abstract. The organic forms of trace elements are considered more bioavailable than the inorganic forms. Although yeast can enrich metal elements and convert inorganic zinc to organic species, its tolerability and transforming capacity are limited. It would therefore be very interesting to look for higher conversion and accumulation in zinc fungi to obtain organic bound zinc from the natural environment. In this paper, potato dextrose agar (PDA) medium containing 800 μg/mL zinc was used for initial screening, with twenty-two fungal strains that tolerated high zinc isolated from the natural environment, and one strain (No.LZ-1108) growing well at a zinc (II) concentration of 10,000 μg/mL. According to morphological analysis, 18S rDNA sequence analysis, and biophysical and biochemical characteristics, No.LZ-1108 was tentatively identified as Fusarium oxysporum. Using atomic absorption spectrometry, the zinc content in the No.LZ-1108 cells was found to be 6.7 mg/g dry cell. After oral administration to rats at a dose of 10 mg Zn (II)/kg body weight, the area under the plasma concentration-time curve (AUC) and the maximum zinc blood concentration (Cmax) of No.LZ-1108 and zinc gluconate were 8.10 g/L.min and 4.28 g/L.min, 23.72 μg/mL and 6.23 μg/mL, respectively. The AUC of No.LZ-1108 was significantly higher than those of zinc gluconate (P<0.05), and the mean relative bioavailability of AUCtest/AUC zinc gluconate was 190 %, which showed that the bound zinc in No.LZ-1108 was more bioavailable than zinc gluconate. The present study reports an interesting alternative to developing zinc-based supplements from a natural source of zinc.

Effect of TiB2 Content on Microstructure and Hardness of In Situ TiB2 Reinforced High Zinc Content Al-Zn-Mg-Cu-Zr Composite Materials

2017 ◽  
Vol 894 ◽  
pp. 34-37 ◽  
Author(s):  
He Li ◽  
Li Hua Chai ◽  
Zi Yong Chen ◽  
Hai Jing Wang ◽  
Tou Nan Jin
Keyword(s):  
Grain Size ◽  
Zinc Content ◽  
Hardness Test ◽  
Matrix Alloy ◽  
Pure Zinc ◽  
Average Grain Size ◽  
Master Alloys ◽  
High Zinc ◽  
The Matrix

TiB2p/Al-10Zn-1.7Mg-1.0Cu-0.12Zr composite was prepared by synthesis of in-situ Al-TiB2 master alloy, high purity aluminum, pure zinc, pure magnesium, Al-50 wt% Cu and Al-4 wt% Zr master alloys. The mass fraction of TiB2 particles was varied from 0% to 9.14%. SEM and TEM were applied to evaluate the microstructure and phase component. HB hardness test were carried out on hardness value of the matrix alloy and the composite. The results showed that TiB2 particles uniformly distributed in the composite and well combined with the matrix alloy. The average grain size of the composites decreased from 110.35μm to 52.07μm when the TiB2 particles is 4.47%, and the grain size changed slightly when TiB2 content increased further. The hardness value of the composites which raised from 189HB to 206HB is superior to that of the matrix alloy. As the content of TiB2 particles increased, HB hardness value also increased.

scholarly journals Selective Removal of Zinc from BOF Sludge by Leaching with Mixtures of Ammonia and Ammonium Carbonate

2020 ◽  
Vol 6 (4) ◽  
pp. 680-690
Author(s):  
Nerea Rodriguez Rodriguez ◽  
Lukas Gijsemans ◽  
Jakob Bussé ◽  
Joris Roosen ◽  
Mehmet Ali Recai Önal ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Ammonium Salt ◽  
Ammonium Carbonate ◽  
Aqueous Ammonia ◽  
Zinc Content ◽  
Ammonia Concentration ◽  
Selective Removal ◽  
Molar Ratio ◽  
Aqueous Mixtures ◽  
High Zinc

Abstract The zinc content of basic oxygen furnace (BOF) sludges is too high for direct recycling into the blast furnace via the sinter plant, as excessive zinc concentrations are detrimental for the refractory lining of the blast furnace. However, by partial and selective removal of zinc from the BOF sludge, the residual sludge can be used as a secondary iron resource in the blast furnace. In this paper, BOF sludge was leached with aqueous ammonia, aqueous solutions of ammonium salts (chloride, carbonate, and sulfate), and aqueous mixtures of ammonia and ammonium salt. The mixtures of ammonia and ammonium salt could leach more zinc with respect to either the aqueous ammonia or the aqueous ammonium salt solution. The ammonia–ammonium carbonate (AAC) mixture was selected as the most suitable lixiviant due to the high zinc leaching efficiency in combination with a high selectivity towards iron; furthermore, this combination does not introduce unwanted chloride or sulfate impurities in the residue. The leaching process was optimized in terms of the liquid-to-solid ratio, total ammonia concentration, ammonium:ammonia molar ratio, temperature, and leaching time. The co-dissolved iron was precipitated as a hydroxide after oxidation of ferrous to ferric ions by an air stream, without co-precipitation of zinc, while the dissolved zinc could be easily recovered as zinc sulfide by precipitation with ammonium sulfide. The (almost) closed-loop process was successfully up-scaled from 10 mL to 1 L scale. Graphical Abstract

Effect of Zinc Content on the Ageing Behavior of Al-Zn-Mg-Cu-Li Alloys

2008 ◽  
Vol 575-578 ◽  
pp. 1093-1096 ◽  
Author(s):  
Zhong Kui Zhao ◽  
Qing Zhou Sun ◽  
Pu Qing Zhang ◽  
Chang Long Li ◽  
Xue Jiu Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Grain Boundary ◽  
Vickers Hardness ◽  
Zinc Content ◽  
Alloying Elements ◽  
Ageing Process ◽  
Cu Alloy ◽  
Transmission Electron ◽  
Second Phases

In this paper, Al-5.6Zn-2.8Mg-1.6Cu-0.24Cr-1.1Li, Al-8.0Zn-2.4Mg-2.4Cu-1.1Li-0.18Zr and Al-11.8Zn-2.9Mg-2.8Cu-1.1Li-0.24Zr (in wt%) alloys were artificially aged at 80,100,120,140 and 160°C for different time, respectively. The ageing process, microstructure and hardness of different alloys are investigated by Vickers hardness and transmission electron microscopy (TEM). With the increment of zinc content, addition of Li to Al-Zn-Mg-Cu alloy containing high alloying elements has little effect on the nucleation of precipitates, but the growth of precipitates has been inhibited. Very fine precipitates with high density are formed during ageing due to the existence of high alloying elements, which result in highly strengthening alloy. As the alloying content is too high to exceed the solution saturation of matrix, coarse second phases are formed in grain boundary.

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