30 research outputs found

    Sindroma Foster Kennedy

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    Introduction: Foster Kennedy syndrome is a rare condition that classically involves optic nerve atrophy ipsilateral to an intracranial neoplasm with concomitant contralateral papilledema. As few as 37 cases have been completely documented between 1909 and 1989 . It was a very rare case because not all of intracranial mass would be manifestated as Foster Kennedy Syndrome Objective: To report a case of Foster Kennedy Syndrome due to supratentorial mass Case: A forty year old woman presented at Eye Clinic UKI hospital Jakarta with a 3-month history of gradual, painless, unilateral deterioration of her vision. She had no other ocular symptoms and no previous ocular history. She also complained about persistent headache which worsened at the morning and took regular analgetic to reduced headache. Systematic head toe examination revealed within normal limit with weight loss about five kilograms in last two months and anosmia. Emotional lability was found. Patient have had a history of hormonal contraception since twelve years ago and no history of same illness in her family. On examination, visual acuity was 6/6 (logMar 0) in the right eye and finger counting (logMar 1.78) in the left eye. There was a relative afferent papillary defect (RAPD). Pupils were round and reactive to light. The anterior segments were normal. On dilated fundus examination, she was found to have a grossly swollen right optic disc and a pale left optic disc. Computed tomography (CT) of the head and orbits revealed a supratentorial mass at left frontotemporal region. Perimetry Kinetic examination revealed central scotoma and severe depression of the eye. The patient was referred to the neurosurgical team for further examination ,and debulking of the lesion was recommended. Conclusion: In case of Foster Kennedy syndrome due to intracranial mass ,early diagnosis and collaboration with neurosurgeon with subsequent surgical resection may prevent further visual deterioration and life saving Keyword : Foster Kennedy syndrome , supratentorial mas

    Spatial characterisation of molecular interactions with cell membranes

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    Interfacial Properties and Antioxidant Activity of Whey Protein-Phenolic Complexes: Effect of Phenolic Type and Concentration

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    Whey protein is a common food additive for enhancing product stability and texture, while phenolics are considered food antioxidants. As a consequence, combining whey protein with phenolics is an effective way to improve protein functionality while also maintaining polyphenol bioactivity. Herein, the functional properties and antioxidant activity of whey protein modified with various types and concentrations of oxidized phenolic compounds, including gallic acid (OGA), ferulic acid (OFA), and tannic acid (OTA), were studied. In general, the modified whey protein had a decrease in free amino content, but an increase in total phenolic content. Whey protein modified with 5% OTA showed the highest total phenolic content and the lowest free amino content. Modification of whey protein with OTA and OGA resulted in a loss of surface hydrophobicity in contrast to whey protein modified with OFA. However, no significant difference in surface activity including foam and emulsion properties in the whey protein with/without modification was observed. The modified whey protein had an increase in antioxidant activity when compared with that of the control

    Interfacial Properties and Antioxidant Activity of Whey Protein-Phenolic Complexes: Effect of Phenolic Type and Concentration

    No full text
    Whey protein is a common food additive for enhancing product stability and texture, while phenolics are considered food antioxidants. As a consequence, combining whey protein with phenolics is an effective way to improve protein functionality while also maintaining polyphenol bioactivity. Herein, the functional properties and antioxidant activity of whey protein modified with various types and concentrations of oxidized phenolic compounds, including gallic acid (OGA), ferulic acid (OFA), and tannic acid (OTA), were studied. In general, the modified whey protein had a decrease in free amino content, but an increase in total phenolic content. Whey protein modified with 5% OTA showed the highest total phenolic content and the lowest free amino content. Modification of whey protein with OTA and OGA resulted in a loss of surface hydrophobicity in contrast to whey protein modified with OFA. However, no significant difference in surface activity including foam and emulsion properties in the whey protein with/without modification was observed. The modified whey protein had an increase in antioxidant activity when compared with that of the control

    Microbial community analysis of an aerobic nitrifying-denitrifying MBR treating ABS resin wastewater

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    A two-stage aerobic membrane bioreactor (MBR) system for treating acrylonitrile butadiene styrene (ABS) resin wastewater was carried out in this study to evaluate the system performance on nitrification. The results showed that nitrification of the aerobic MBR system was significant and the highest TKN removal of approximately 90% was obtained at hydraulic retention time (HRT) 18. h. In addition, the result of nitrogen mass balance revealed that the percentage of TN removal due to denitrification was in the range of 8.7-19.8%. Microbial community analysis based on 16s rDNA molecular approach indicated that the dominant ammonia oxidizing bacteria (AOB) group in the system was a Îē-class ammonia oxidizer which was identified as uncultured sludge bacterium (AF234732). A heterotrophic aerobic denitrifier identified as Thauera mechernichensis was found in the system. The results indicated that a sole aerobic MBR system for simultaneous removals of carbon and nitrogen can be designed and operated for neglect with an anaerobic unit. ÂĐ 2010 Elsevier Ltd

    Feasibility study of a cyclic anoxic/aerobic two-stage MBR for treating ABS resin manufacturing wastewater

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    This study investigated the feasibility and the treatment efficiency of a cyclic anoxic/aerobic two-stage MBR for treating polymeric industrial wastewater. The anoxic/aerobic hybrid MBR was operated without sludge withdrawal except sampling during the study. The results showed that the highest COD organic loading rate of 8.7kg COD/m3 day from bioreactor was obtained at phase 3. The system achieved 97% BOD5 and 89% COD removal. It also revealed that 93% of COD removal was contributed by bioreactor at phase 3 and the similar results happened to phases 1 and 2. The highest TN and TKN removals for each phase were 60, 74, 80% and 61, 74, 81%, respectively and limited by nitritation step. SEM images of nascent and fouled membranes were offered to evaluate the cleaning method. The system was operated for 174days, resulting in high degradation rate, flexibility towards influent fluctuations and limited sludge production. ÂĐ 2010 Elsevier Ltd

    Hydrometallurgical Process and Economic Evaluation for Recovery of Zinc and Manganese from Spent Alkaline Batteries

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    An innovative, efficient, and economically viable process for the recycling of spent alkaline batteries is presented herein. The developed process allows for the selective recovery of Zn and Mn metals present in alkaline batteries. The hydrometallurgical process consists of a physical pre-treatment step for separating out the metal powder containing Zn and Mn, followed by a chemical treatment step for the recovery of these metals. Sulfuric acid was used for the first leaching process to dissolve Zn(II) and Mn(II) into the leachate. After purification, Mn was recovered in the form of MnO2, and Zn in its metal form. Furthermore, during the second sulfuric acid leaching, Na2S2O5 was added for the conversion of Mn(IV) to Mn(II) (soluble in the leachate), allowing Mn to be recovered as MnCO3. Masses of 162 kg of Zn metal and 215 kg of Mn (both in the form of MnO2 and MnCO3) were recovered from one ton of spent alkaline batteries. The direct operating costs (chemicals, labor operation, utilities, energy) and indirect costs (amortization, interest payment) required for a plant treating 8 tons of spent batteries per day was calculated to be CAD726andCAD 726 and CAD 534 per ton, respectively, while the total revenue from the sale of the metals was calculated at $CAD 1359.6 per ton of spent batteries. The development of this type of cost-effective industrial process is necessary for a circular economy, as it contributes to addressing environment- and energy-related issues, and creates opportunities for the economic utilization of metals
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