Design of a Shake Table with Moderate Cost

The study aims to use an adsorbent natural based of Moroccan oil shale of Timahdit area (Y layer) in a physical-chemical adsorption process for treating industrial discharges colorful. The used adsorbent is the insoluble party of the sub-critical extraction of decarbonized oil shale of Timahdit. The tests performed on the methylene blue (MB), showed a strong elimination in the first 10 minutes. The influences of various experimental parameters were studied: mass ratio of adsorbent, time and temperature of thermal treatment, contact time, pH of MB and heating temperature of solution on the parameters of material were studied. The experimental results have shown that the adsorption of methylene blue dye by the adsorbent is more than 90% at initial pH a range 6-7 at room temperature for 30 minutes. The process is simple and the adsorbent produced is a new material with interesting adsorption capacities of moderate cost which does not require an activating agent and can be used as industrial adsorbent for the decontamination of effluents containing organic pollutants.

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ZA-12

Alloy Digest ◽

10.31399/asm.ad.zn0031 ◽

1977 ◽

Vol 26 (9) ◽

Keyword(s):

Fracture Toughness ◽

Wear Resistance ◽

Shear Strength ◽

Cast Iron ◽

High Strength ◽

Heat Treating ◽

General Purpose ◽

Corrosion And Wear ◽

Aluminum Castings ◽

Moderate Cost

Abstract ZA-12 is a zinc-aluminum-copper foundry alloy recommended for general-purpose castings of high strength at moderate cost. Its properties are similar to those of cast iron; however, it was designed for use in nonferrous foundries to compete with cast-iron, bronze, brass and aluminum castings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion and wear resistance as well as casting, forming, heat treating, machining, and surface treatment. Filing Code: Zn-31. Producer or source: Eastern Alloys Inc.. See also Alloy Digest Zn-49, May 1990.

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UNS Z35630

Alloy Digest ◽

10.31399/asm.ad.zn0043 ◽

1988 ◽

Vol 37 (7) ◽

Keyword(s):

Fracture Toughness ◽

Wear Resistance ◽

Shear Strength ◽

High Strength ◽

Heat Treating ◽

General Purpose ◽

Corrosion And Wear ◽

Zinc Alloy ◽

Aluminum Castings ◽

Moderate Cost

Abstract UNS No. Z35630 is a zinc-aluminum-copper foundry alloy recommended for general-purpose castings of high strength at moderate cost. It was designed for use in nonferrous foundries to compete with cast-iron, bronze, brass and aluminum castings. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion and wear resistance as well as casting, forming, heat treating, machining, and surface treatment. Filing Code: Zn-43. Producer or source: Zinc alloy producers.

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An Easy Efficient Method of Veterinary Drug Residue Analysis in Raw Milk by RP-HPLC-UV with Application to Raw Milk

Current Pharmaceutical Analysis ◽

10.2174/1573412915666190416115517 ◽

2020 ◽

Vol 16 (7) ◽

pp. 942-949

Author(s):

Lekweiri Haiba Legrae ◽

Mohamed Fadel Deida ◽

Bah Mohamed Lemine Abdellahi ◽

Mohamed Brahim Elkory ◽

Ibrahima Ndiaye ◽

...

Keyword(s):

Residue Analysis ◽

Raw Milk ◽

Cow Milk ◽

Veterinary Drug ◽

Easy Method ◽

Rp Hplc ◽

Peak Resolution ◽

European Standards ◽

Moderate Cost ◽

Short Time

Background: This study reports an easy method of a veterinary drug investigation in raw milk, based on QuECHERS extraction followed by RP-HPLC-UV analysis. Use of this benchtop system was motivated by its availability and moderate cost relatively to other sophisticated methods such as LC-MS which are more efficient. Methods: This developed method has been optimized and then after validation according to EU legislation, it demonstrated good linearity with R²>0.997, acceptable peak resolution within a short time (<9.5 min) and good recovery of the analyzed drugs (OXY, ALZ and IVR, respectively 87.08, 99.02 and 92.01 %). Additionally, we applied the method to the analysis of cow milk, collected in Nouakchott, capital of Mauritania. Results: The obtained results indicated a mixed level of drug use according to targeted molecules. In 42% of sampled farms, the anti-parasitics IVR and ALZ were detected whereas the antibiotic OXY was detected in 50%. Conclusion: This investigation shows that 17% of the sampled farms exceeded European standards for IVR drug.

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