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41.
Novel hydrophobic cellulose aerogel (CA) supported graphene quantum dots (GQD)/Pd were synthesized with high lipophilicity, superior porosity as well as high catalytic activity. The nanocomposite aerogel was obtained in four steps, including transformation of cotton to CA, a silanization reaction of CA in the presence of TiO2 nanoparticles to give polysiloxane/TiO2 nanoparticles supported on CA (ST@CA), a modification of ST@CA with GQD to yield polysiloxane/TiO2 nanoparticles/graphene quantum dots supported on CA (STG@CA), and finally a deposition of Pd nanoparticles on STG@CA. The synthesized aerogel demonstrated hydrophobicity with a water contact angle of 136.2°. It also exhibited excellent oil/water selective absorption capacity with an oil absorption of up to 79 g g−1 with 134 g g−1 selectivity. Finally, the nanocomposite was used as a heterogeneous catalyst in the oxidation reaction of alcohols, ethylbenzene, and alkenes. High yields, excellent selectivities, green and mild reaction conditions, recyclability and biocompatibility of the catalyst were important features of the reactions.Novel hydrophobic cellulose aerogel (CA) supported graphene quantum dots (GQD)/Pd were synthesized with high lipophilicity, superior porosity as well as high catalytic activity. 相似文献
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Ritesh Kumar Syed Saeed Ahmed Gulam Sarwar Hashmi Md. Kalim Ansari Sajjad Abdur Rahman 《Journal of maxillofacial and oral surgery》2016,15(3):336-344
Aim
The present study was planned to investigate the etiology of injuries and to analyze correlation between clinical and radiological findings in cases of craniomaxillofacial trauma.Study Design
An 18 months cross-sectional study was done and 325 patients with maxillofacial fractures were analyzed from January 2013 to June 2014 who reported to the department of oral and maxillofacial surgery, Aligarh, Uttar Pradesh. Data was recorded in a preformed case sheet which included: patient’s demographic data, cause of injury, type of injury, treatment plan.Results
Out of the 325 patients, 74.4 % were males with a male: female ratio of 2.91:1. The 21–30 year age group was found to be maximum. Road traffic accidents accounted for 71.3 %, followed by fall from height (19 %) and assault (9.5 %). Most commonly involved vehicles were two wheelers followed by public transport. Mandibular fractures (65 %) were most prevalent, followed by zygomaticomaxillary complex (44.27 %), parietal bone (48 %) and orbital fractures (21.3 %). Thirty-seven fractures (7.14 %) were missed clinically which were confirmed later by radiographic technique. Maximum were in cranium region (57 %) followed by mandible (27 %), mid face region (16.21 %). Thirty-three fractures (6.37 %) were overestimated or suspected clinically which could not be confirmed by radiographic technique. Maximum were in mandible (48.5 %) followed by mid face (36.33 %) and cranium (15.15 %).Conclusion
The idea behind this article is to analyze the various trends and affecting factors and correlation between clinical and radiological findings. A better understanding of the above said would help in future treatment planning and management of facial injuries.43.
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Sajjad Ali MD Salman Adil MD Mohammad Khurshid MD Saad Shafqat MD 《Journal of stroke and cerebrovascular diseases》2003,12(6):285-287
Pure red cell aplasia (PRCA) is a rare hematological disorder characterized by an isolated depletion of erythroid precursors with preservation of other cell lines. Neurological concomitants are not a recognized feature. We report a case of unexplained middle cerebral artery infarction in a 32-year-old woman with PRCA. This concurrence may reflect a predisposition to ischemic stroke in patients with PRCA. 相似文献
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The lungs may be involved in patients with histiocytosis X as part of the generalised disease, but histiocytosis X confined to the lungs without extrapulmonary involvement is rare. This report describes two cases of primary pulmonary histiocytosis arising in patients with Hodgkin's disease. It is impossible to state with certainty whether the pulmonary histiocytosis arose as a response to the defects of cell-mediated immunity, or as a consequence of immunosuppression by radiation and chemotherapy. 相似文献
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Zieliński Grzegorz Sajjad Emir Ahmed Maksymowicz Maria Pękul Monika Koziarski Andrzej 《Pituitary》2019,22(6):620-632
Pituitary - To explore the incidence of double pituitary adenomas in a tertiary center for pituitary surgery and asses their clinical, imaging and histopathological features. The medical records of... 相似文献
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