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One-step synthesis of N-doped metal/biochar composite using NH_3-ambiance pyrolysis for efficient degradation and mineralization of Methylene Blue

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Journal of Environmental Sciences 2019年第4期31卷 29-41页

作者： Md Manik Mian Guijian Liu Balal Yousaf Biao Fu Rafay ahmed Qumber Abbas mehr ahmed mujtaba munir Liu Ruijia CAS Key Laboratory of Crust-Mantle Materials and the Environments School of Earth and Space SciencesUniversity of Science and Technology of China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of Sciences

A series of new biochar-supported composite based on the combination of biochar and metallic nanoparticles(NPs)were produced through single-step pyrolysis of FeCl_3–Ti(OBu)_4 laden agar biomass under NH_3 environment.The physiochemical properties of composites were characterized thoroughly.It has found that heating temperature and N-doping through NH_3-ambiance pyrolysis significantly influence the visible-light sensitivity and bandgap energy of composites.The catalytic activities of composites were measured by degradation of Methylene Blue(MB)in the presence or absence of H_2O_2 and visible-light irradiation.Our best catalyst(N–TiO_2–Fe_3O_4-biochar)exhibits rapid and high MB removal competency(99.99%)via synergism of adsorption,photodegradation,and Fenton-like reaction.Continuous production of O_2U^-and UOH radicles performs MB degradation and mineralization,confirmed by scavenging experiments and degradation product analysis.The local trap state Ti^(3+),Fe_3O_4,and N-carbon of the catalyst acted as active sites.It has suggested that the Ti^(3+)and N-doped dense carbon layer improve charge separation and shuttle that prolonged photo-Fenton like reaction.Moreover,the catalyst is highly stable,collectible,and recyclable up to 5 cycles with high MB degradation efficiency.This work provides a new insight into the synthesis of highly visible-light sensitized biocharsupported photocatalyst through NH_3-ambiance pyrolysis of NPs-laden biomass.

关键词： Biochar-supported photocatalyst N–TiO2–Fe3O4-biochar NH3-ambiance pyrolysis Methylene Blue Photocatalysis

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Morton’s Neuroma;Surgical Exploration Is an Option in Symptomatic Patients with Normal Investigation

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Open Journal of Orthopedics 2018年第11期8卷 413-417页

作者： Syed Mohsin Ali mujtaba ahmed Siddiqi King Abdullah Medical City Hospital Manama Bahrain National Guard Hospital Al-Hassa Saudi Arabia

Morton neuroma is well described problem to metatarsophalangeal Joint (MTPJ) Etiology of Morton’s Neuroma which has wide range of problems from trauma, and nerve hypertrophy etc. Clinical evaluation is very important for diagnosis and sometimes investigations like ultrasound or MRI scan are helpful for conformation of diagnosis. Management varies from orthotics, shoe modification, injections or surgical excision. We are reporting a case which showed importance of surgical exploration when investigation is normal and difficulty in making diagnosis clinically.

关键词： Neuroma MRI Orthotics Exploration Hypertrophy

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Value of Shoulder MRI in Cancer Patients Presenting with Shoulder Related Symptoms

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Journal of Health Science 2019年第5期7卷 320-325页

作者： Bilal mujtaba Sameh Nassar ahmed Taher Felicia Wang Kundan Rao John E. Madewell Rizwan Aslam Kevin McEnery Department of Diagnostic Radiology UT MD Anderson Cancer CenterHoustonTexas 77030USA

Nonspecific shoulder pain is common presentation among elderly patients and patients with a history of cancer. The major concern of shoulder pain in cancer patients is the development of metastases. MRI of the shoulder is the most commonly used imaging modality for assessment of suspected soft tissue pathologies associated with the shoulder pain. In this study, we try to examine the role of shoulder MRI in elderly patients with a history of cancer presenting with nonspecific shoulder complaints for assessment of metastases.

关键词： Shoulder MRI malignancy retrospective analysis

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