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STRONG CONVERGENCE OF NEW VISCOSITY RULES OF NONEXPANSIVE MAPPINGS
AHMAD, MUHAMMAD SAEED,NAZEER, WAQAS,MUNIR, MOBEEN,NAQVI, SAYED FAKHAR ABBAS,KANG, SHIN MIN The Korean Society for Computational and Applied M 2017 Journal of applied mathematics & informatics Vol.35 No.5
The aim of this paper is to present two new viscosity rules for nonexpansive mappings in Hilbert spaces. Under some assumptions, the strong convergence theorems of the purposed new viscosity rules are proved. Some applications are also included.
STRONG CONVERGENCE OF NEW VISCOSITY RULES OF NONEXPANSIVE MAPPINGS
Muhammad Saeed Ahmad,Waqas Nazeer,Mobeen Munir,Sayed Fakhar Abbas Naqvi,강신민 한국전산응용수학회 2017 Journal of applied mathematics & informatics Vol.35 No.5
The aim of this paper is to present two new viscosity rules for nonexpansive mappings in Hilbert spaces. Under some assumptions, the strong convergence theorems of the purposed new viscosity rules are proved. Some applications are also included.
Risk Factors and Epidemiology of Gastric Cancer in Pakistan
Daniyal, Muhammad,Ahmad, Saeed,Ahmad, Mukhtiar,Asif, Hafiz Muhammad,Akram, Muhammad,Rehman, Saif Ur,Sultana, Sabira Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.12
Gastric cancer is the 2nd most common cause of death among all cancers and is the 4th most common cancer in the world. The number of deaths due to gastric cancer is about 800,000 annually. Gastric cancer is more common in men as compared to women and is 3rd most common cancer after colorectal and breast cancers in women. A progressive rise in the incidence rate has been observed in females over the last 5 years. The highest incidence of stomach cancer is in China, South America and Eastern Europe. The incidence of gastric cancer has 20 fold variation worldwide. Global variation is linked by two factors which play important role in developing gastric cancer. One is infection with Helicobacter pylori and the $2^{nd}$ is diet. South Asia is a region with low risk, despite a high prevalence of H.pylori. Gastric carcinoma is common in southern region of India. Gastric cancer is more readily treated if diagnosed early. This study aims to provide awareness about gastric cancer as well as an updated knowledge about risk factors and epidemiology of gastric cancer in Pakistan.
Update knowledge on cervical cancer incidence and prevalence in Asia
Daniyal, Muhammad,Akhtar, Naheed,Ahmad, Saeed,Fatima, Urooj,Akram, Muhammad,Asif, Hafiz Muhammad Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Cervical cancer is the second most common cause of cancer-related death among women worldwide, with over 500,000 new cases diagnosed annually and 50% mortality rate in Asia. In the United States, approximately 10,370 new cases of cervical cancer are diagnosed annually, and estimated 3,710 deaths occur from the disease, making it the sixth most common cause of malignancy among American women. This study aims to provide awareness about cervical cancer as well as an updated knowledge about the prevalence and incidence of cervical cancer in Asia.
Zakiullah, Zakiullah,Saeed, Muhammad,Ali, Sajid,Javed, Nabila,Khisroon, Muhammad,Muhammad, Basir,Khuda, Fazli,Ahmad, Saeed,Ismail, Mohammad Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.16
The purpose of this study was to evaluate associations of the CYP1A1 gene variant rs4646903 polymorphism with the risk of developing esophageal cancer (EC). A case-control study was carried out in Pashtun population of Khyber Pakhtunkhwa province of Pakistan in which 140 hospital based EC cases and 196 population based healthy controls exposed to similar environmental conditions were included. A specific method based on the real time polymerase chain reaction (RT-PCR) was used to detect genotypes in case and control groups and results were then analyzed with SPSS version 20. In our population, individuals with CC and TC genotypes of the CYP1A1 rs4646903 polymorphism had significantly higher risk of EC (adjusted odds (OR): 15.709, 95%CI: 6.065-40.686, OR: 3.256 95%CI: 1.902-5.574 respectively). The 'C' allele was strongly associated with the disease (p< 0.0001). Adjusted OR was higher (1.5 times in C/C) in case of variant alleles that show the contribution of environmental and nutritional factors towards the development of EC. Our findings suggest that presence of the 'C' allele of rs4646903 (T>C) may be one of the risk alleles for EC susceptibility in Pashtun population.
An Efficient Synthesis of 2-Alkyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxides
Muhammad Zia-ur-Rehman,Jamil Anwar Choudary,Saeed Ahmad 대한화학회 2005 Bulletin of the Korean Chemical Society Vol.26 No.11
An efficient and environment friendly method has been described for the synthesis of various 2-alkyl-4-hydroxy-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxides starting from N-alkylation of sodium o-benzosulfimide in an ionic liquid for the first time. Ring cleavage and ring closure of the resulting product were achieved in a single step in a cost effective solvent (methanol) followed by N-alkylation of resulting alkyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate in ionic liquid while boron triflouride was used as a catalyst along with molecular sieves in carboxamide formation step.
Khalil, Muhammad,Ha, Chang-Sik,Saeed, Shaukat,Khan, Irum Majeed,Ahmad, Zahoor Wiley Subscription Services, Inc., A Wiley Company 2010 Polymer Composites Vol.31 No.4
<P>Polyimide molecular composite (MC) films were prepared by embedding a stiff-chain polyimide (PI<SUB>S</SUB>) in the ductile matrix of a flexible-chain polyimide (PI<SUB>F</SUB>) by blending their respective poly(amic acid) precursor solutions, followed by casting, drying, and thermal imidization upto 300°C. The PI<SUB>S</SUB> was prepared from pyromellitic dianhydride (PMDA) and 1,5-diaminonaphathalene (DAN), whereas the PI<SUB>F</SUB> was prepared from the same dianhydride and 4,4′-oxydianiline (ODA). Transparent, tough, and creasable MC films were obtained with 2.5–40 wt% of PI<SUB>S</SUB> content. The disruption of crystalline order of PI<SUB>S</SUB> in the MC films evidenced its fine dispersion in the matrix. Visco-elastic measurements showed a single and enhanced value of the glass transition temperature for MC films indicating miscibility of this polyimide pair. Furthermore, the variation of charge transfer (CT) fluorescence intensity with the PI<SUB>S</SUB> content in the blends verified complete miscibility upto 30 wt% of PI<SUB>S</SUB> loading. These MCs showed a notable enhancement in the mechanical properties. Among all, the blend containing 30 wt% of stiff-chain molecules gave the best combination of properties when compared with the matrix polyimide: a 50% higher value of tensile modulus, a 17°C rise in the glass transition temperature, and better thermal stability. POLYM. COMPOS., 2010. © 2009 Society of Plastics Engineers</P>
Biochemical and Trace Mineral Analysis of Silajit Samples From Pakistan
Shafiq Muhammad Imtiaz,Nagra Saeed Ahmad,Batool Nayab The Korean Nutrition Society 2006 Nutritional Sciences Vol.9 No.3
Silajit is a blackish brown pitch-like gummy substance. It is an important Unani and Ayurvedic medicine widely used in the treatment of many diseases and as nutritional supplement It is found in certain mountainous regions of Pakistan, Afghanistan, India, Nepal, Australia and Russia. Silajit samples of Pakistani origin were obtained from different sources and analyzed for their physical characteristics and biochemical & elemental composition. X-ray diffraction studies on Silajit showed that it is an amorphous substance and has no crystalline structure. Also, pH studies of Silajit (2 g/L of water) indicated that it was slightly acidic in nature and ranged from 3.45 to 7.23. Conductivity ranged from 157.7 to 330. Amino acid analysis revealed that Silajit contained lysine and alanine in higher amounts than all other amino acids and ranged from 1456 to 2240 and 68 to $1615{\eta}mole/g$, respectively. Mean concentration of arsenic, mercury, cadmium, lead, copper and zinc was 73.15, 104.92, 0.496, 3.89, 4.04 and 17.23 ppm, respectively. Silajit samples were also analyzed for calcium, potassium and sodium.
One-stage Hip Reconstruction for Developmental Hip Dysplasia in Children over 8 Years of Age
Irfan Qadir,Saeed Ahmad,Atiq uz Zaman,Chirag Muhammad Khan,Shahzad Ahmad,Amer Aziz 대한고관절학회 2018 Hip and Pelvis Vol.30 No.4
Purpose: This study was performed to assess the clinical and radiological outcomes following one-stage hip reconstruction, consisting of open reduction femoral shortening and pelvic osteotomy, for neglected developmental dislocation of the hip (DDH). Materials and Methods: This is a retrospective analysis of 77 hips in 65 patients (46 females and 19 males; 12 had bilateral dislocations), operated at a Ghurki Trust Teaching Hospital in Pakistan between 2013 and 2015. The average age at surgery was 11.02±3.43 years. According to the Tönnis classification, there were 10, 14, 22, and 31 patients in grades 1, 2, 3, and 4, respectively. The pelvic procedure utilized in this study was triple osteotomy (47 hips) followed by double and Salter osteotomy (18 and 12 hips, respectively). Postoperative evaluations were conducted using the modified MacKay’s scoring system (functional outcomes) and Severin’s scoring method (radiological assessment). Results: Postoperatively, there were 38 (49.4%), 19 (24.7%), 14 (18.2%), and 6 (7.8%) hips in Severin grade I, II, III and IV, respectively. According to the modified McKay criteria, there were 22 hips (28.6%) in excellent condition, 44 (57.1%) in good condition, 9 (11.7%) in fair condition and 2 (2.6%) in poor condition. Both patients with poor outcomes had an unstable, painful hip with evidence of avascular necrosis of the femoral head. Conclusion: Based on the results presented here, we recommend the single stage procedure of open reduction, femoral shortening and pelvic osteotomy for treatment of DDH in older children with good to excellent functional and radiological outcomes.