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Nanostructured porous polyaniline(PANI)coated carbon cloth(CC)as electrodes for flexible supercapacitor device

Journal of Materials Science & Technology 2021年第29期88卷 168-182页

作者： Dinesh J.Ahirrao ajay kumar.pal Vikalp Singh Neetu Jha Department of Physics Institute of Chemical TechnologyMatunga(E)Mumbai400019India Department of Physics Ramniranjan Jhunjhunwala CollegeGhatkopar(W)Mumbai 400086India

Nanostructured porous polyaniline(PANI)has been synthesized and coated simultaneously on a highly flexible and conductive carbon cloth(CC)substrate using a simple in-situ chemical oxidative polymerization *** coated CC(PANI-CC)based flexible electrodes were further used for the fabrication of flexible supercapacitor *** the comparison purpose,pure PANI has also been synthesized and tested for its electrochemical *** energy storage capacity of PANI and PANI–CC composite was investigated using electrochemical techniques like CV,GCD,and EIS in a potential range from 0 to 0.8 V in 1 M H_(2)SO_(4)***-CC flexible electrodes exhibited the highest specific capacitance of 691 F/g;whereas,pure PANI could only achieve 575 F/g of specific capacitance at 1 A/*** also exhibited outstanding cyclic stability by recollecting 94%of its initial capacitance after 2000 GCD *** actual implementation,a flexible supercapacitor device has been fabricated using stainless steel sheets and PANI-CC flexile *** energy storage performance of the PANI-CC flexible supercapacitor device was tested at several bending angles,which resulted in 72%of capacitance retention at a maximum bending angle of 140°compared to the capacitance obtained at an angle 0°(flat state).PANI-CC exhibited improved electrochemical performance than pure PANI due to the synergistic effect between PANI and ***,CC helped in enhancing the conductivity and stability;whereas,PANI boosted the capacitance owing to its excellent porosity and fast pseudocapacitive charge storage response.

关键词： Polyaniline Carbon cloth Flexible supercapacitor Flexible electrode Composite

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Prognostic value of AKT isoforms in non-small cell lung adenocarcinoma

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The Journal of Biomedical Research 2023年第3期37卷 225-228页

作者： Sahil Khurana ajay pal Singh Ashok kumar Rajeev Nema All India Institute of Medical Sciences Bhopal BhopalMadhya Pradesh 462021India Department of Medicine All India Institute of Medical Sciences RishikeshRishikeshUttarakhand 249201India Department of Biochemistry All India Institute of Medical Sciences BhopalBhopalMadhya Pradesh 462021India Department of Oncology 3B Blackbio Biotech India Ltd.BhopalMadhya Pradesh 462023India

Dear Editor,Lung cancer is one of the most prevalent cancers in the world and has a high mortality *** cancer patients often have a poor prognosis,with a five-year survival rate of only about 16%.The International Agency for Research on Cancer reports that lung cancer was the main cause of cancer deaths in 2020,accounting for 1.80 million deaths.

关键词： Lung lung cancer

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Neglected reverse Essex-Lopresti injury with ulnar nerve compression

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Chinese Journal of Traumatology 2011年第2期14卷 111-113页

作者： ajay pal Singh Ish kumar Dhammi Anil kumar Jain Department of Orthopaedics UCMS & GTB Hospita Delhi 110095 India

A 45 year old woman was diagnosed as having anteromedial radial head dislocation and distal radius fracture five months after her injury on fight forearm. The radial head dislocation led to ulnar nerve compression. She had severe restriction of her elbow movements. She was treated with arthrolysis, decompression of the ulnar nerve and radial head resection. The reverse Essex Lopresti injury and radial head dislocation compressing the ulnarnerve has not been reported in English language literature to the best of our knowledge. A mechanism is proposed for the injury. In acute presentations, restoration of both the radioulnar joints should be done and neglected nature of such injury leads to suboptimal outcomes.

关键词： Radius fracture Unar nerve Elbow joint

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Outcome of surgical treatment of type Ⅳ capitellum frac- tures in adults

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Chinese Journal of Traumatology 2012年第4期15卷 201-205页

作者： ajay pal Singh Ish kumar Dhammi Vipul Garg Arun pal Singh Punjab Civil Medical Services-I Mukerian PunjabIn-dia Department of Orthopaedics UCMS&GTB HospitalDelhiIndia Swami Pramanand Hospital MukerianPunjabIndia

Objective： Fractures of the capitellum and trochlea constitute less than 1% of all elbow fractures and a shear fracture involving the capitellum and extending medially into most of the trochlea is rarely reported. Type Ⅳ capitellum fracture is still controversial in regard to its ra- diographic appearance, surgical approach and osteosynthesis. We report 10 cases of type Ⅳ capitellum fracture with a view to elucidating its clinical features and treatment outcome. Methods： We treated 10 patients of type Ⅳ capitellum fracture with a mean age of 32 years. A uniform surgical approach and postoperative rehabilitation were followed. Results： Nine patients presented to us after a mean of 4 days of injury and one patient was nonunion after 6 months of injury who had been treated conservatively by a bone setter. Double arc sign was absent in 6 cases. Intraopera- tively 6 capitellotrochlear fragments were devoid of soft tissue attachments. By Mayo Elbow Performance Score evaluation, 7 patients got excellent, 2 good and 1 fair results. One patient with associated elbow dislocation developed heterotopic ossification. There was no case of avascular necrosis, osteoarthrosis or fixation failures. Conclusions： Type Ⅳ capitellum fractures are rare and belong to complex articular injuries. A good functional out- come can only be achieved with open reduction and stable internal fixation followed by early mobilization. Preopera- tive radiographic assessment and computed tomography help surgeons in choosing the right surgical approach and implants. Good surgical technique and stable internal fixa- tion are the keys to early mobilization and good functional outcome.

关键词： Fractures, bone Elbow joint Fracture location, internal Bone wires

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Coronal shear fractures of distal humerus: Diagnostic and treatment protocols

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World Journal of Orthopedics 2015年第11期6卷 867-876页

作者： ajay pal Singh Arun pal Singh Punjab Civil Medical Services-1 Kanwar Hospital

Coronal shear fractures of distal humerus involving the capitellum and the trochlea are rare injuries with articular complexity, and are technically challenging for management. With better understanding of the anatomy and imaging advancements, the complex nature of these fractures is well appreciated now. These fractures involve metaphysealcomminution of lateral column and associated intraarticular injuries are common. Previously, closed reduction and excision were the accepted treatment but now preference is for open reduction and internal fixation with an aim to provide stable and congruent joint with early range of motion of joint. Various approaches including extensile lateral, anterolateral and posterior approaches have been described depending on the fracture pattern and complexity. Good to excellent outcome have been reported with internal fixations and poor results are noted in articular comminution with associated articular injuries. Various implants including headleass compression screws, minifragment screws, bioabsorbable implants and column plating are advocated for reconstruction of these complex fractures. Inspite of articular fragments being free of soft tissue attachments the rate of osteonecrosis and osteoarthritis is reported very less after internal fixation. This article summarizes the diagnostic and treatment strategies for these rare fractures and recommendations for management.

关键词： Capitellum Trochlea Elbow Fracture Distal humerus Treatment

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Neglected isolated fracture of the trochlea humeri

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Chinese Journal of Traumatology 2010年第4期13卷 247-249页

作者： ajay pal Singh Ish kumar Dhammi Anil kumar Jain Saurabh Jain Department of Orthopaedics Guru Teg Bahadur Hospital University College of Medical Sciences University of Delhi Delhi 110095 India

A 15 years old girl was found to have isolated trochlea fracture 10 weeks after an injury caused by a fall on her left elbow. Movement of the elbow was severely restricted. Radiographs showed a half moon-shaped and anterosuperiorly displaced osteochondral fragment. Medial approach capsulotomy of the elbow and excision of the intraarticular adhesions were done to expose the isolated trochlea fracture. Headless screws were used for fixation, combined with bone grafting. The follow-up showed union and excellent functional recovery of the elbow. Isolated trochlea fracture in adults is rare and usually associated with capitellar fractures and/or elbow dislocations. A neglected trochlea fracture is rarely reported in the English language literature to the best of our knowledge. Recognition of isolated trochlea fracture is vital to apprehend the pathomechanics of the injury and to devise a suitable treatment approach.

关键词： Fractures, bone Humerus Elbow

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Monteggia fracture dislocation equivalents analysis of eighteen cases treated by open reduction and internal fixation

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Chinese Journal of Traumatology 2011年第4期14卷 221-226页

作者： ajay pal Singh Ish kumar Dhammi Anil kumar Jain Rajeev Raman Prashant Modi Punjab Civil Medical Services-I Mukerian Punjab India Department of Orthopaedics UCMS & GTB HospitalDelhi 110095 India

Objective： Monteggia fracture disloca- tion equivalent, though already described by Bado, is still an unclassified entity. We aimed to retrospectively analyze 18 cases of Monteggia variants and discuss the injury mechanisms, management, and outcome along with a re- view of the literature. Methods： A retrospective record of Monteggia frac- ture dislocation （2003-2008） was reviewed from medical record department of our institute. Classic Monteggia frac- ture dislocation, children below 12 years or adults over 50 years, as well as open grade iI ＆ Ill cases were excluded from this study. Monteggia variant inclusion criteria in- cluded fracture of the proximal ulna together with a fracture of the radial head or neck and skeletal maturity. Totally 26 patients were identified with Monteggia variants and 18 were available for follow-up, including 11 males and 7 fe- males with the mean age of 35 years. The ulna fracture was treated by compression plating along with tension band wiring. Radial head/neck was reconstructed in 12 patients while excised in 6 patients. Results： Follow-up ranged from 1-4 years, mean 2.6 years. Patients were assessed clinicoradiologically. MayoElbow Performance Score outcomes. At final follow-up, was employed to assess the the results were excellent in 10 patients, good in 4, fair in 2 and poor in 2. Mean range of motion of the elbow was 20°, 116°, 50° and 55° for extension, flexion, pronation and supination, respectively. Two patients had complications in the form of heterotopic ossification and stiffness of the elbow. One nonunion ulna, primarily treated by tension band wiring, was managed by refixation with locking reconstruction plate and bone grafting. Bone grafting was only required in this patient for nonunion. Another patient had implants removed on his request. The results in our series closely correlated with extent of intraarticular damage, coronoid fracture and comminuted fractures. Conclusions： Monteggia fracture dislocation equiva-

关键词： Monteggia's fracture Radius fracture Ulna

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Nonunion of coronal shear fracture of femoral condyle

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Chinese Journal of Traumatology 2011年第3期14卷 143-146页

作者： ajay pal Singh Ish kumar Dhammi Raju Vaishya Anil kumar Jain Arun pal Singh Prashant Modi Punjab Civil Medical Services Mukerian Punjab India Department of Orthopedics UCMS & GTB Hospital Delhi India Department of Orthopedics and Traumatology Indraprastha Apollo Hospital Delhi India S.P.N. Hospital Mukerian Punjab India

Isolated coronal fractures of femoral condyle are rare in adults and nonunion of Hoffa fracture is reported only a few times in the literature. We analyzed six cases of nonunion of Hoffa fractures over a period of three years. Three patients were treated conservatively and three patients had fixation failures. Delay of presentation was 2 months to one year. Treatment protocol consisted of open reduction, excision of pseudoarthrosis, bone grafting and internal fixation along with knee arthrolysis. Union wasachieved in all patients at mean 16 weeks. The treatment of nonunion of Hoffa fractures requires careful preoperative planning and meticulous surgical technique. The literature regarding the controversies in fracture management and surgical technique are reviewed.

关键词： Femoral fracture Fracture ftxation internal Retrospective studies

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Spondyloptosis of C6-C7： a rare case report

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Chinese Journal of Traumatology 2010年第6期13卷 377-379页

作者： Manish Chadha ajay pal Singh Arun pal Singh Department of Orthopaedics Guru Teg Bahadur Hospital University College of Medical Sciences University of Delhi New Delhi 110095 India Department of Orthopaedics and Joint Replacement Indraprastha Apollo Hospital New Delhi 110095 India

A 35 years old female presented to us after falling from a height. She complained of a neck pain and a complete quadriplegia and was diagnosed as having spondyloptosis of the C6-C7. Skeletal traction was performed on her. CT scan showed fractures of the C5, C6, and C7 vertebral body. The patient underwent anterior approach partial corpectomy with anterior cervical locking plate and strut grafting from ipsilateral iliac crest. Intraoperatively it was found that the disc was completely ruptured and there was a dural tear and cerebrospinal fluid leak. Her postoperative period was complicated by cerebrospinal fluid collection and posterior instrumentation was not performed due to the poor general condition. She had no neural recovery at the last follow-up. Spondyloptosis is a severe and highly unstable injury with a three column ligamentous disruption and may be complicated, as in our case, with a dural *** of these cases is fraught with complications,and prognosis for neural recovery is dismal.

关键词： Spondylolisthesis Spine Spinal injuries

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Periprosthetic subtrochanteric femoral fracture in a megaprosthesis of the knee

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Chinese Journal of Traumatology 2013年第5期16卷 314-315页

作者： Raju Vaishya ajay pal Singh Abhishek Vaish Department of Orthopaedics & Joint ReplacementSurgery Indraprastha Apollo Hospitals New Delhi India Department of Orthopaedics Sancheti Institute of Or-thopaedics & Rehabilitation Pune India

We report a rare case of periprosthetic posttraumatic fracture of subtrochanteric region of femur alter a megaprosthesis of the knee, done for resistant non- union of distal femur with secondary osteoarthrosis in a 51... 详细信息

关键词： Periprosthetic fractures, Femur Femoral fractures Knee

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