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92篇 您的检索式:作者名="K Usha"
    题名 作者 年代 出处 被引量
1Capsule endoscopy:Present status and future expectation显示文摘Video capsule endoscopy(CE)since its introduction 13years back,has revolutionized our approach to small intestinal diseases.Obscure gastrointestinal bleed(OGIB)continues to be the most important indication for CE with a high sensitivity,specificity as well as positive and negative predictive values.It is best performed during ongoing bleed or immediately thereafter.Overt OGIB has a higher diagnostic yield than occult OGIB.However,even in iron deficiency anemia,CE is emerging as important investigation after initial negative work up.In suspected Crohn’s disease(CD),CE has been shown superior to traditional imaging and endoscopic technique and should be considered after a negative ileocolonoscopy.Although CE has also been used for evaluating established CD,a high capsule retention rate precludes its use ahead of cross-sectional imaging.Celiac disease,particularly where gastro-duodenoscopy cannot be performed or is normal,can also be investigated by CE.Small bowel tumor,hereditary polyposis syndrome,and non-steroidal anti-inflammatory drugs induced intestinal damage are other indications for CE.Capsule retention is the only significant adverse outcome of CE and occurs mostly in presence of intestinal obstruction.This can be prevented by use of Patency capsule prior to CE examination.Presence of cardiac pacemaker and intracardiac devices continue to be relative contraindications for CE,though data do not suggest interference of CE with these devices.Major limitations of CE today include failure to control its movement from outside,inability of CE to acquire tissue for diagnosis,and lack of therapeutic help.With ongoing interesting and exciting developments taking place in these areas,these issues would be solved in all probability in near future.CE has the potential to become one of the most important tools in diagnostic and possibly in the therapeutic field of gastrointestinal disorder.Mahesh K Goenka Shounak Majumder Usha Goenka 2014World Journal of Gastroenterology2014,20,29:9
2铁鞣新方法显示文摘将铁鞣与铬鞣进行了优化结合,这种鞣制技术不仅可以加工出质量上呈的皮革制品,同时又可以满足废液中铬与铁的含量低于100mg/kg的标准。此工艺制造的皮革可耐沸水试验,阐述了其鞣制技术和鞣制机理。对铁鞣法在加工山羊绒面革和绵羊全粒面服装革中出现的问题进行了研究。用扫描电镜对鞣革的结构特性进行了研究,对成革的物理机械性能及染色特性也做了分析和阐述。N K Chandra Babu R Karthikeyan R Ramesh Usha Ramamurthi T Ramasami 范贵洋 李彦春 2007中国皮革2007,36,9:4
3Energy feedback and synchronous dynamics of Hindmarsh–Rose neuron model with memristor显示文摘We analyze the energy aspects of single and coupled Hindmarsh–Rose(HR) neuron models with a quadratic flux controlled memristor. The energy function for HR neuron with memristor has been derived and the dynamics have been analyzed in the presence of various external stimuli. We found that the bursting mode of the system changes with external forcing. The negative feedback in Hamilton energy function effectively stabilizes the chaotic trajectories and controls the phase space. The Lyapunov exponents have been plotted to verify the stabilization of trajectories. The energy aspects during the synchronous dynamics of electrically coupled neurons have been analyzed. As the coupling strength increases, the average energy fluctuates and stabilizes at the point of synchronization. When the neurons are coupled via chemical synapse,the average energy variations show three important regimes: a fluctuating regime corresponding to the desynchronized, a stable region indicating synchronized and a linearly increasing regime corresponding to the amplitude death states have been observed. The synchronization transitions are verified by plotting the transverse Lyapunov exponents. The proposed method has a large number of applications in controlling coupled chaotic systems and in analyzing the energy change during various metabolic processes.K Usha P A Subha 2019Chinese Physics B2019,28,2:3
4铁鞣新方法(续)显示文摘将铁鞣与铬鞣进行了优化结合,这种鞣制技术不仅可以加工出质量上乘的皮革制品,同时又可以满足废液中铬与铁的含量低于100mg/kg的标准。此工艺制造的皮革可耐沸水试验,阐述了其鞣制技术和鞣制机理。对铁鞣法在加工山羊绒面革和绵羊全粒面服装革中出现的问题进行了研究。用扫描电镜对鞣革的结构特性进行了研究,对成革的物理机械性能及染色特性也做了分析和阐述。N K Chandra Babu R Karthikeyan R Ramesh Usha Ramamurthi T Ramasami 范贵洋 李彦春 2007中国皮革2007,36,11:2
5Antifungal activity of Datura stramonium, Calotropis gigantea and Azadirachta indica against Fusarium manglferae and floral malformation in mango显示文摘K Usha B Singh P Praseetha 2009Eur J Plant Pathol2009,124,:1
6Binding of potassium[3H]embelate to rat brain synaptosomes显示文摘Rakcsh K J Usha Z 0,,03:1
7Effect of ionic strength and protein concentration on the transport of proteinsthrough chitosan/polystyrene sulfonate multilayer membrane 显示文摘Jissy Mathew C T Aravindakumar Usha K Aravind 2008Journal of Membrane Science2008,325,:1
8Efficacy of Female Culex quinquefasciatus with Entomopathogenic Fungus Fusarium pallidoroseum显示文摘Mohanty S S Kamaraju Raghavendra Usha Rai K Aditya Prasad Dash A P 2008Parasitol Res2008,103,:1
9Recovery of opencircuit voltage on nickel-cadmium cells显示文摘SURESH M S SUBRAHMANYAM A USHA K 1995Journal of Power Sources1995,56,:1
10Local sum uncertainty relations for angular momentum operators of bipartite permutation symmetric systems显示文摘We show that violation of the variance based local sum uncertainty relation(LSUR)for angular momentum operators of a bipartite system,proposed by Hofmann and Takeuchi[Phys.Rev.A 68032103(2003)],reflects entanglement in the equal bipartitions of an N-qubit symmetric state with even qubits.We establish the one-to-one connection with the violation of LSUR with negativity of covariance matrix[Phys.Lett.A 364203(2007)]of the two-qubit reduced system of a permutation symmetric N-qubit state.I Reena H S Karthik J Prabhu Tej Sudha A R Usha Devi A K Rajagopal 2022Chinese Physics B2022,31,6:1
11Antimi- crobial and Antiangiogenesis Activity of Streptomyces Parvulus KUAP106 from Mangrove Soil 显示文摘R Usha P Ananthaselvi C K Venil 2010Eu- ropesn Journal of Biological Sciences2010,2,4:1
12Salicylic acid induced physiological and biochemical changes in wheat seedlings under water stress显示文摘Singh B Usha K 0,,:1
13Spectrum and the susceptibilities of microbial isolates in cases of congenital nasolacrimal duet obstruetion显示文摘Usha K Smitha S Shah N etal 2006JAAPOS2006,10,5:1
14Screening of Actinomycetesfrom mangrove ecosystem for L-asparaginase activity and optimizationby response surface methodology显示文摘USHA R MALA K K VENIL C K 2011Polish Journal of Microbiology2011,60,3:1
15Mesoporous FeAlMCM-41:An improved catalyst for the vapor phase tert-butylation of phenol显示文摘VINU A USHA Nandhini K MURUGESAN V 2004Appl Catal A:Gen2004,265,:1
16Failure strength prediction of unidirectional tensile coupons using acoustic emission peak amplitude andenergy parameter with artificial neural networks显示文摘Sasikumar T RajendraBoopathy S Usha K M 2009Composites Science and Technology2009,69,78:1
17Antifungal activity of Da-tura stramonium, Calotropis gigantea and Azadirachta indie aagainst Fusarium mangiferae and floral malformation in mango显示文摘Usha K Singh B Praseetha P 2012Eur J Plant Pathol2012,124,4:1
18Wind power technology diffusion analysis in selected states of India显示文摘Usha Rao K Kishore V V N 2009Renewable Energy2009,34,:1
19Neural network prediction of failure strength ofcomposite tensile specimens using acoustic emissioncounts显示文摘Rajendraboopathy S Sasikumar T Usha K M 2008Journal of Non Destructive Testing&Evaluation2008,7,2:1
20Differential role of sodium channels SCN1A and SCN2A gene polymorphisms with epilepsy and multiple drug resistance in the north Indian population 显示文摘Ran L Ritu K Usha KM 2009Br J Clin Pharmacol2009,68,2:1
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