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101.
Wan Aida Hazwani Wan Azizan Muhd Firdaus Kasim Kelimah Elong Roshidah Rusdi Rizuan Mohd Rosnan Norlida Kamarulzaman 《RSC advances》2020,10(66):40291
In order to satisfy the energy demands of the electromobility market, further improvements in cathode materials are receiving much attention, especially high energy density cathode materials for Li-ion batteries (LIBs). In this work, the self-propagating combustion (SPC) method is use to synthesise undoped LiNi0.6Co0.3Ti0.1O2 (LNCT), novel nano-sized Al-doped LiNi0.6Co0.3−xAlxTi0.1O2 (LCA) and LiNi0.6−xCo0.3AlxTi0.1O2 (LNA) (x = 0.01) cathode materials. LNCT, LCA and LNA were annealed at 700 °C for 24 h. Following the synthesis, the phase, chemical structure and purity of the materials were analysed using X-ray diffraction (XRD). Based on the XRD results, all materials exhibit a single-phase structure with rhombohedral layered structure. Based on the HRTEM and EDX results, all samples exhibit polyhedral-like shapes, while the Al-doped samples display smaller crystallite sizes compared to the undoped sample. As for the electrochemical performances, the initially discharged capacity of LCA (238.6 mA h g−1) is higher than that of LNA (214.7 mA h g−1) and LNCT (150.5 mA h g−1). However, LNA has a lower loss of capacity after the 50th cycle compared to the LCA sample, which makes it a more excellent candidate for electrochemical applications. The main reason for the excellent electrochemical behaviour of LNA is due to lower cation mixing. Furthermore, Rietveld refinements reveal that the LNA sample has a longer atomic distance of Li–O and shorter TM–O in the cathode structure, which makes Li+ ion diffusion more efficient, leading to excellent electrochemical performance. These findings further proved the potential of the novel nano cathode material of LiNi0.6−xCo0.3AlxTi0.1O2 (LNA) to replace the existing commercialized cathode materials for rechargeable Li-ion batteries.Al substitute into Ni site increase Li–O and reduce M–O atomic distance lead to excellent cycleability with high energy density. 相似文献
102.
Mumtaz-ud-din Wani Mohd Parvez Shahid Hameed Kumar Ghulam Mohd Naikoo Masooda Jan Hilal Ahmad Wani 《The Indian journal of surgery》2015,77(3):182-185
To study the various modes of presentation, diagnosis, and management of surgical emergencies of tubercular abdomen. This prospective study of surgical emergencies of tubercular abdomen was conducted in 50 patients who attended our surgical emergency from 2006 to 2008. Patients were evaluated thoroughly with history, physical examination, routine investigations, and special investigations such as ELISA, PCR, barium studies of gastrointestinal tract, and diagnostic laparoscopy as required and managed with medical and surgical treatment as necessary. The most of patients were from rural areas, in the third to sixth decades with slight male preponderance. Abdominal pain, vomiting, and constipation were commonest presenting symptoms. About 20 % patients had history of pulmonary tuberculosis and 16 % patients presented with ascites. PCR for blood and ascitic fluid was positive in 72 and 87.5 % patients, respectively. About 24 % patients were managed nonoperatively and responded to ATT. About 76 % patients needed surgery among which one-fifth of patients were operated in emergency. Procedures like adhesiolysis of gut (47.3 %), strictureplasty (10.5 %), resection anastomosis (5.2 %), right hemicolectomy (5.2 %), and ileotransverse anastomosis (7.8 %) were performed in 30 patients and peritoneal biopsy and lymph node biopsy in the remaining 8 patients. Both medically and surgically managed patients were put on antitubercular therapy. Abdominal tuberculosis is a disease of middle-aged rural people, presenting commonly with abdominal pain and vomiting with right lower abdominal tenderness. PCR (blood and ascites) for tuberculosis is much more sensitive than IgM ELISA (blood and ascites). The most of patients required surgical procedures and all patients responded dramatically to antitubercular therapy symptomatically with increase in the hemoglobin level and decrease in ESR. 相似文献
103.
104.
Psychometric properties of the revised Malay version Medical Outcome Study Social Support Survey using confirmatory factor analysis among postpartum mothers
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105.
Objectives:To provide an empirical test of the applicability of Locker''s conceptual model of oral health for malocclusion patients, and to suggest alternative models of the effect of malocclusion on well-being.Materials and Methods:Data from a survey of 323 adolescents attending for orthodontic treatment were analyzed to develop a new oral health model for malocclusion patients. Oral health–related quality of life (OHRQoL) was measured using the 14-item Oral Health Impact Profile; malocclusion was measured using the Dental Health Component (DHC) of the Index of Orthodontic Treatment Need (IOTN). Using structural equation modeling, the relationship between conceptual domains in Locker''s model was explored and three models of their interrelationship tested for goodness of fit.Results:Fit indexes for Locker''s model indicated that it did not fit the data well. Therefore, a modified model was developed to incorporate additional paths between other levels to better fit the data. The best fit was provided by a model in which the direct effects of malocclusion on pain, discomfort, and handicapping—and the direct effect of pain on disability—were removed. A direct effect of functional limitation on disability was allowed. The modified Oral Health Impact Profile model proved to be a good fit to the data (root mean square error of approximation = 0.069).Conclusion:The pathways identified in Locker''s (1988) conceptual model of oral health may not be appropriate for describing the relationships between OHRQoL constructs in individuals with malocclusion. An alternative model is proposed. 相似文献
106.
Effect of postural angle on back muscle activities in aging female workers
performing computer tasks
Nabilla Sofia Mohd Kamil Siti Zawiah Md Dawal 《Journal of Physical Therapy Science》2015,27(6):1967-1970
[Purpose] This study investigated the effects of postural angle on back muscle activity
during a computer task in aging women. [Subjects] Seventeen women ≥50 years old
participated. [Methods] The participants were instructed to perform computer-related tasks
for 20 minutes on a workstation that simulated typical office working conditions. Back
posture was measured from the measured trunk and pelvic angles. Electromyography
activities were recorded simultaneously from the cervical erector spinae, longissimus, and
multifidus muscles. [Results] The lowest mean percentages of maximum voluntary contraction
for the cervical erector spinae and longissimus muscles were obtained when the upper trunk
and pelvic angles were between 0° to −5° from the sagittal plane. The back muscle
activities increased as the upper trunk and pelvic angles exceeded 0°. Statistical
analysis showed significant correlations between upper trunk angle and cervical erector
spinae and longissimus muscle activities. Similarly, pelvic angle was significantly
correlated with cervical erector spinae and multifidus muscle activities. [Conclusion] A
neutral back posture minimizes muscle activities in aging women performing computer
tasks.Key words: Postural angle, Muscle activity, Aging 相似文献
107.
108.
Mohd Faizan Latif Zafar Jilani Mazhar Abbas Yasir Salam Siddiqui Aamir Bin Sabir M.K.A. Sherwani Saifullah Khalid 《中华创伤杂志(英文版)》2015,18(3):181-183
Inferior glenohumeral dislocation is the least common type of glenohumeral dislocations. It may be
associated with fractures of the adjacent bones and neurovascular compromise. It should be treated
immediately by close reduction. The associated neuropraxia usually recovers with time. Traction-counter traction method is commonly used for reduction followed by immobilization of the shoulder for three weeks. Here, we report a case of inferior glenohumeral joint dislocation with greater tuberosity fracture with transient neurovascular compromise and present a brief review of the literature. 相似文献
109.
Mohd Wamique Wahid Ali D. Himanshu Reddy Preeti Vishwakarma Mohd Waseem 《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2018,12(6):843-847
Aim
To evaluate the serum paraoxonase 1 activity and determine its association with duration in type 2 Diabetes mellitus patients.Methods
A total of 80 cases from type 2 diabetes mellitus and healthy controls were enrolled in the present case control study. Human serum PON1 concentration was measured by ELISA and western blotting and it activity was determined spectrophotometrically using 4-nitrophenyle acetate. Diagnostic accuracy of serum PON1 to identify type 2 Diabetes mellitus was calculated with ROC analysis.Result
Serum concentration of LDL, VLDL, TG, A1C, FBS and TC levels showed significantly higher levels in type 2 diabetes patients as compared to healthy controls, however there were no significant differences found in the level of HDL. Serum PON1 concentration and activity monitored in patients with >1?year diabetes showed higher level (75.1?±?6.8?ng/mL) as compared to patients with >3?years diabetes (65.24?±?1.6?ng/mL), its level was further decreased in patients with >5 (53.8?±?2.6?ng/mL) and >7?years (48.1?±?2.7?ng/mL) of diabetes. PON1 concentration decreased as the duration of diabetes increased. PON1 level was further decreased due to habits like smoking and alcohol consumption.Conclusion
Serum PON1 levels decrease in states of high oxidative stress like metabolic syndrome, obesity, uncontrolled diabetes, and dyslipidemia. It can be used as diagnostic marker for diabetes mellitus along with increased TG, LDL, VLDL and FBG. 相似文献110.
The effects of HIV protease inhibitors atazanavir and lopinavir/ritonavir on insulin sensitivity in HIV-seronegative healthy adults 总被引:5,自引:0,他引:5
Noor MA Parker RA O'Mara E Grasela DM Currie A Hodder SL Fiedorek FT Haas DW 《AIDS (London, England)》2004,18(16):2137-2144
BACKGROUND: Therapy with some HIV protease inhibitors (PI) contributes to insulin resistance and type 2 diabetes mellitus, by inhibition of insulin-sensitive glucose transporters. Atazanavir (ATV) is a new PI with substantially less in vitro effect on glucose transport than observed with other PI, including lopinavir (LPV) or ritonavir (RTV). METHODS: Randomized, double-blind, crossover study of the effect of 5 days of administering ATV, lopinavir/ritonavir (LPV/r) or placebo on insulin-stimulated glucose disposal in 30 healthy HIV-negative subjects. Each subject was studied on two of three possible treatments with a wash-out period between treatments. RESULTS: The mean insulin-stimulated glucose disposal (mg/min per kg body weight) per unit insulin (microU/ml) (M/I) was 9.88, 9.80 and 7.52 for placebo, ATV and LPV/r, respectively (SEM, 0.84 for all). There was no significant difference between ATV and placebo. The M/I for LPV/r was 23% lower than that for ATV (P = 0.010) and 24% lower than that for placebo (P = 0.008). The mean glycogen storage rates were 3.85, 4.00 and 2.54 mg/min per kg for placebo, ATV and LPV/r, respectively (SEM, 0.39 for all). There was no significant difference between ATV and placebo. The glycogen storage rate for LPV/r was 36% lower than ATV (P = 0.003) and 34% lower than placebo (P = 0.006). CONCLUSIONS: ATV given to healthy subjects for 5 days did not affect insulin sensitivity, while LPV/r induced insulin resistance. This observation is consistent with differential in vitro effects of these PI on glucose transport. Further data are needed to assess clinical implications for body composition. 相似文献