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- 저자 : Altaf Shah (검색결과 4 건)
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Muhammad Altaf Nazir,Tayyaba Najam,Muhammad Sohail Bashir,Muhammad Sufyan Javed,Muhammad Aswad Bashir,Muhammad Imran,Umair Azhar,Syed Shoaib Ahmad Shah,Aziz ur Rehman 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.1
The use of highly efficient, environment-friendly and economically inexpensive materials for the adsorption removal of contaminants from water has always been considered as emerging task. In this study, we synthesized hybrid tri-metallic nickel cobalt layered double hydroxide (NiCoAl-LDH) porous material for the adsorption removal of Eosin yellow (EY) and Malachite green (MG) from water. The characterization results disclosed that tri-metallic LDH has been synthesized with extraordinary purity, identical morphology and high surface area (134.21 m2·g−1). The NiCoAl-LDH performs the best for adsorption of EY (qe=37.30mg·g−1 at pH=2) and MG (qe=39.61 mg·g−1 at pH=10). The Langmuir and Freundlich isotherm models were applied to explain the adsorption process of dyes on the surface of LDH. The Langmuir model (R2=0.991 and 0.999 for Eosin Y and Malachite G, respectively) was very appropriate to explain the process of adsorption on NiCoAl-LDH as homogeneous (monolayer). The maximum adsorption capacity of EY and MG calculated with Langmuir model was 78.74 and 110.13 mg·g−1 at 30 °C, respectively. Also with 240 minutes contact time 94.8% EY and 89.9% MG was adsorbed by as synthesized NiCoAl-LDH nanosheets. The NiCoAl-LDH nanosheets showed excellent performance of reusability of up to five regeneration cycles. The results showed that the adsorption capacity of NiCoAl-LDH nanosheets after five regeneration cycles, to adsorb EY, decreased only from 40.80 to 36.93 mg·g−1 and that of MG from 79.21 to 75.42 mg·g−1, which is acceptable. The overall results Suggest that the fabricated NiCoAl-LDH is favorable for the purification of dye contaminated water.
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Sentinel Lymph Node Biopsy in Breast Cancer: A Clinical Review and Update
Sheikh Zahoor,Altaf Haji,Azhar Battoo,Mariya Qurieshi,Wahid Mir,Mudasir Shah 한국유방암학회 2017 Journal of breast cancer Vol.20 No.3
Sentinel lymph node biopsy has become a standard staging tool in the surgical management of breast cancer. The positive impact of sentinel lymph node biopsy on postoperative negative outcomes in breast cancer patients, without compromising the oncological outcomes, is its major advantage. It has evolved over the last few decades and has proven its utility beyond early breast cancer. Its applicability and efficacy in patients with clinically positive axilla who have had a complete clinical response after neoadjuvant chemotherapy is being aggressively evaluated at present. This article discusses how sentinel lymph node biopsy has evolved and is becoming a useful tool in new clinical scenarios of breast cancer management.
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Clinical factors affecting the outcome of arthocentesis
Syed Wakeel Andrabi,Altaf H,Malik,Ajaz A,Shah 대한구강악안면외과학회 2019 대한구강악안면외과학회지 Vol.45 No.1
Objectives: This study aimed to evaluate the effect of clinical factors on the outcome of arthrocentesis in the treatment of temporomandibular joint (TMJ) internal derangement. Materials and Methods: Fifty patients with TMJ internal derangement underwent arthrocentesis using ringer’s lactate. The present study evaluated the contribution of the clinical variables of age, time since onset, visual analogue scale (VAS) pain level, and range of motion (ROM) on the outcomes of TMJ arthrocentesis: age (≤25 years, >25 and ≤40 years, >40 and ≤60 years), VAS pain level (≤5, >5 and ≤7, >7 and ≤10), and ROM (<25 and ≥25 mm). Odds ratios (ORs) were used to describe the proportional benefit of each variable the on successful outcome of arthrocentesis. For the OR to be clinically relevant or even clinically noticeable, we assumed that the OR would need to be larger than 2. Results: Mean preoperative pain score was 6.49±1.560 and at 6 months postoperative was 0.46±1.147 with an average decrease of pain score 6 (P<0.001). The mean preoperactive maximum mouth opening was 26.14±4.969 mm and mean maximum mouth opening at 6-month inerval was 38.92±3.392 mm. The mean increase in the mouth opening was a mean difference of 12.78 mm (P<0.001). Logistic regression showed that the maximum benefit occurred in patients aged <25 years (OR, 12.01; P=0.012), a VAS pain level of >7 (OR, 11.25; P=0.039), and a maximum vertical opening of <25 mm (OR, 7.70; P=0.038). Conclusion: Lavage of the superior joint space with ringer’s lactate resulted in significant reduction in pain and improvement in mouth opening. Patients with a greater inflammatory component and younger patients benefitted more from arthrocentesis. Evaluation of these clinical variables helped in predictive modelling, which may provide clinicians with the opportunity to identify “at-benefit” patients early and initiate specific treatment.
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Manzoor Ahmad Wani,Showkat Ali Zargar,Ghulam Nabi Yatoo,Inaamul Haq,Altaf Shah,Jaswinder Singh Sodhi,Ghulam Mohammad Gulzar,Mushtaq Khan 대한소화기내시경학회 2020 Clinical Endoscopy Vol.53 No.4
Background/Aims: This study aimed to study the endoscopic yield, appropriateness, and complications of pediatric endoscopyperformed by adult gastroenterologists in an adult endoscopic suite. Methods: This a retrospective study in which records of all the patients less than 18 years of age who underwent endoscopy in the last5 years were studied. The indications of endoscopy in children were categorized as appropriate or inappropriate per the latest guidelinesby American Society for Gastrointestinal Endoscopy and North American Society for Pediatric Gastroenterology, Hepatology andNutrition. Positive endoscopic yield was defined as the presence of any abnormality on endoscopy. Results: Among the total of 822 children (age <18 years), the most common indications were variceal surveillance/eradication in 157(19.1%), followed by dyspepsia in 143 (17.4%), upper gastrointestinal (UGI) bleeding in 136 (16.5%), recurrent abdominal pain in 94(11.4%), unexplained anemia in 74 (9%), recurrent vomiting in 50 (6.08%), chronic refractory gastroesophageal reflux disease in 34 (4.1%)and others; 780 out of 822 endoscopic procedures (94.9%) done in children were appropriate as per the guidelines. The endoscopicyield was 45.8%, highest in patients with UGI bleeding (71.3%), followed by variceal surveillance (54.8%), recurrent vomiting (38%),dyspepsia (37.8%), and recurrent abdominal pain (36%). Minor adverse events occurred in 7.3% of children. Conclusions: Pediatric endoscopy performed by an experienced adult gastroenterologist may be acceptable if done in cooperation witha pediatrician.
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