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| 1 | High-contrast imaging for weakly diffracting specimens in coherent diffraction imaging显示文摘Coherent diffraction imaging (CDI) and ptychography techniques bypass the difficulty of having high-quality optics in X-ray microscopy by using a numerical reconstruction of the image that is obtained by inverting the diffracted intensity recorded by a charge-coupled device array. However, the reconstruction of the image from the intensity data obtained from a weakly diffracting specimen is known to be difficult because of the obvious reduction in signal-to-noise ratio (SNR). In this case, the specimen only slightly modifies the probe diffraction pattern, resulting in difficulty in the identification of the detailed structure of the specimen from the reconstructed image because of the poor contrast and sharpness of the image. To address this situation, a modification in the image retrieval algorithms used in the iterative reconstruction of the image is suggested. This modification should double the presence of high spatial frequencies in the diffraction pattern to enhance the contrast and edge detection in existing imaging techniques. | 潘兴臣 Suhas P. Veetil 刘诚 林强 朱健强 | 2013 | Chinese Optics Letters2013，11，2： | 3 |
| 2 | High resolution multispectral spatial light modulators based on tunable Fabry-Perot nanocavities显示文摘Spatial light modulators(SLMs)are the most relevant technology for dynamic wavefront manipulation.They find diverse applications ranging from novel displays to optical and quantum communications.Among commercial SLMs for phase modulation,Liquid Crystal on Silicon(LCoS)offers the smallest pixel size and,thus,the most precise phase mapping and largest field of view(FOV).Further pixel miniaturization,however,is not possible in these devices due to inter-pixel cross-talks,which follow from the high driving voltages needed to modulate the thick liquid crystal(LC)cells that are necessary for full phase control.Newly introduced metasurface-based SLMs provide means for pixel miniaturization by modulating the phase via resonance tuning.These devices,however,are intrinsically monochromatic,limiting their use in applications requiring multi-wavelength operation.Here,we introduce a novel design allowing small pixel and multi-spectral operation.Based on LC-tunable Fabry-Perot nanocavities engineered to support multiple resonances across the visible range(including red,green and blue wavelengths),our design provides continuous 2π phase modulation with high reflectance at each of the operating wavelengths.Experimentally,we realize a device with 96 pixels(~1 μm pitch)that can be individually addressed by electrical biases.Using it,we first demonstrate multi-spectral programmable beam steering with FOV~18° and absolute efficiencies exceeding 40%.Then,we reprogram the device to achieve multi-spectral lensing with tunable focal distance and efficiencies~27%.Our design paves the way towards a new class of SLM for future applications in displays,optical computing and beyond. | Shampy Mansha Parikshit Moitra Xuewu Xu Tobias Wwmass Rasna Maruthiyodan Veetil Xinan Liang Shi-Qiang Li Ramon Paniagua-Dominguez Arseniy I.Kuznetsov | 2022 | Light(Science & Applications)2022，11，6： | 3 |
| 3 | Degradation oftriclosan under aerobic, anoxic, and anaerobic conditions 显示文摘 | Gangadharan Puthiya Veetil P Vijaya Nadaraja A Bhasi A | 2012 | Applied biochemistry and biotechnology2012，167，6： | 1 |
| 4 | Development of Immunosensors Using Carbon Nanotubes显示文摘 | Veetil J V Ye K | 2007 | Biotechnol Prog2007，23，3： | 1 |
| 5 | Development of immunosensors using carbon nanotubes 显示文摘 | VEETIL J V YE K | 2007 | Biotechnol Prog2007，23，3： | 1 |
| 6 | Cardio- vascular risk in psoriasis: a population-based analysis with as- sessment of the framingham risk score 显示文摘 | Myasoedova E Akkara Veetil BM Matteson EL | 2013 | Scientifica (Cairo)2013，，37： | 1 |
| 7 | Amyopathic dermatomyositis presenting as skin necrosis显示文摘 | Veetil BM Whitt I | | 0，，06： | 1 |
| 8 | Development of immunosensors using carbon nanotubes显示文摘 | JITHESH V VEETIL KAIMING YE | 2007 | Biotechnolngy Progress2007，23，3： | 1 |
| 9 | Development of immunosensors using carbon nanotubes显示文摘 | Veetil J V Ye K | 2007 | Biotechnol Prog2007，23，3： | 1 |
| 10 | Perioperative care for patients with rheumatic diseases显示文摘 | Veetil B Bongartz T | 2011 | Nat Rev Rheumatol2011，8，1： | 1 |
| 11 | Degradation of dyes from aqueous solution by Fenton processes: a review显示文摘 | Puthiya Veetil Nidheesh Rajan Gandhimathi Srikrishnaperumal Thanga Ramesh | 2013 | Environmental Science and Pollution Research2013，，4： | 1 |
| 12 | Coronary artery thickening with mucosal lesions in Henoch-Schonlein purpura 显示文摘 | Veetil BM Reed AM Mattke AC | 2012 | Pediatr Dermatol2012，29，3： | 1 |
| 13 | Spectral and temporal evolutions of ultrashort pulses diffracted through a slit near phase singularities显示文摘 | Veetil S P Viswanathan N K Vijayan C | 2006 | Appl Phys Lett2006，89，04： | 1 |
| 14 | Ayopathic dermatomyositis presenting asskin necrosis显示文摘 | Veetil B M Whitt I | 2011 | J Clin Rheumatol2011，17，6： | 1 |
| 15 | Comparing accuracy of cochlear measurements on magnetic resonance imaging and computed tomography:A step towards radiation-free cochlear implantation显示文摘Objective:Computed Tomography(CT)and Magnetic Resonance Imaging(MRI)are commonly employed in pre-operative evaluation for cochlear implant surgery.However,with a decrease in the age of implantation,even minor radiation exposure can cause detrimental effects on children over their lifetime.The current study compares different cochlear measurements from CT and MRI scans and evaluates the feasibility of using only an MRI scan for radiological evaluation before cochlear implantation.Methods:A longitudinal observational study was conducted on 94 ears/47 children,employing CT and MRI scans.The CT and MRI scan measurements include,A value,B value,Cochlear duct length(CDL),twoturn cochlear length,alpha and beta angles to look for cochlear orientation.Cochlear nerve diameter was measured using MRI.The values were compared.Results:The mean difference between measurements from CT and MRI scans for A value,B value,CDL,and two-turn cochlear length values was 0.567±0.413 mm,0.406±0.368 mm,2.365±1.675 mm,and 2.063±1.477 mm respectively without any significant difference.The alpha and beta angle measures were comparable,with no statistically significant difference.Conclusion:The study suggests that MRI scans can be the only radiological investigation needed with no radiation risk and reduces the cost of cochlear implant program in the paediatric population.There is no significant difference between the measurements obtained from CT and MRI scans.However,observed discrepancies in cochlear measurements across different populations require regionally or race-specific standardized values to ensure accurate diagnosis and precision in cochlear implant surgery.This aspect must be addressed to ensure positive outcomes for patients. | Anurita Swarup Vinusree Karakkandy Preetam Chappity Suprava Naik Sanjay Kumar Behera Pradipta Kumar Parida Mohnish Grover Gaurav Gupta Prajna Paramita Giri Saurav Sarkar Pradeep Pradhan Dillip Kumar Samal Aswathi Kallyadan Veetil Asutosh Adhikari Saurav Nayak | 2023 | Journal of Otology2023，18，4： | 0 |
| 16 | 在没有输血的血红素 2 g/dL 的成功的肠外科显示文摘 We were unable to find reports in the published medical literature of any cases of bowel surgery being successfully performed at such a low hemoglobin level,without blood transfusion or blood products pre or post-surgery,with the patient’s uncomplicated recovery.This study is about such a case.A patient presenting with severegastrointestinal bleeding was diagnosed with enteric fever and multiple ileal ulcers.He had an extremely low hemoglobin level(2 g/dL) and mild renal and hepatic impairment.He was immediately admitted for right hemicolectomy under general anesthesia though he refused transfusion of blood or blood products prior to,during,or after surgery on religious grounds(Jehovah’ s Witnesses).After the surgery and having survived these potentially life-threatening circumstances,he left the hospital without major complications.In such circumstances,lives may be saved by prompt clinical decision-making,collaboration and swift surgical intervention coupled with the immediate consultation and input of the patient and family. | Ramakrishnapillai Padmakumar Madhukara Pai Shams Farish Jayadevan Rajeev Thampi Sanjeev Thekke Veetil Sreevalsan Binu Sheetal Yesudas Santhakumari Sooraj Shamna Safar Rowther | 2013 | World Journal of Gastrointestinal Surgery2013，5，8： | 0 |
| 17 | Pd/Fe_(3)O_(4) supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C-C coupling and electrocatalytic application显示文摘The current work describes the synthesis of a new bio-waste derived cellulosic-carbon supportedpalladium nanoparticles enriched magnetic nanocatalyst(Pd/Fe_(3)O_(4)@C)using a simple multi-step process under aerobic conditions.Under mild reaction conditions,the Pd/Fe_(3)O_(4)@C magnetic nanocatalyst demonstrated excellent catalytic activity in the Hiyama cross-coupling reaction for a variety of substrates.Also,the Pd/Fe_(3)O_(4)@C magnetic nanocatalyst exhibited excellent catalytic activity up to five recycles without significant catalytic activity loss in the Hiyama cross-coupling reaction.Also,we explored the use of Pd/Fe_(3)O_(4)@C magnetic nanocatalyst as an electrocatalyst for hydrogen evolution reaction.Interestingly,the Pd/Fe_(3)O_(4)@C magnetic nanocatalyst exhibited better electrochemical activity compared to bare carbon and magnetite(Fe_(3)O_(4)nanoparticles)with an overpotential of 293 mV at a current density of 10 mA·cm^(–2). | Vishal Kandathil Akshay Moolakkil Pranav Kulkarni Alaap Kumizhi Veetil Manjunatha Kempasiddaiah Sasidhar Balappa Somappa R.Geetha Balakrishna Siddappa A.Patil | 2022 | Frontiers of Chemical Science and Engineering2022，16，10： | 0 |
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