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Interaction of Heterotrimeric G-Protein Components with Receptor-like Kinases in Plants： An Alternative to the Established Signaling Paradigm？

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Molecular Plant 2016年第8期9卷 1093-1095页

作者： Swarup Roy Choudhury sona Pandey Donald Danforth Plant Science Center St. Louis MO 63132 USA

Heterotrimeric G proteins comprising Ga, Gβ, and Gγ subunits （hereafter termed G proteins） mediate important signaling pro- cesses in all eukaryotes. As per the established paradigm,

关键词： hereafter Signal guanine

DC Programming Algorithm for Clusterwise Linear L1 Regression

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Journal of the Operations Research Society of China 2017年第2期5卷 233-256页

作者： Adil M.Bagirov sona Taheri Faculty of Science and Technology Federation University AustraliaBallaratAustralia

The aim of this paper is to develop an algorithm for solving the clusterwise linear least absolute deviations regression *** problem is formulated as a nonsmooth nonconvex optimization problem,and the objective function is represented as a difference of convex *** conditions are derived by using this *** algorithm is designed based on the difference of convex representation and an incremental *** proposed algorithm is tested using small to large artificial and real-world data sets.

关键词： Clusterwise regression Nonsmooth optimization Smoothing Incremental algorithm

Network approach to understanding the organization of and the consequence of targeted leader removal on an end-oriented task

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Current Zoology 2017年第3期63卷 269-277页

作者： Sumana ANNAGIRI Swetashree KOLAY Bishwarup PAUL Chandan sona Behaviour & Ecology Lab Department of Biological Sciences Indian Institute of Science Education and Research Kolkata Mohanpur West Bengal 741246 India Department of Pharmacology CSIR-CDRI Jankipurm Vistar Lucknow Uttar Pradesh 226021 India

Relocation is an important event in the lives of several social insects whereby all colony members have to be transferred to a new nest when conditions in the old nest become unfavorable. In the current study, network tools were used to examine the organization of this goal-oriented task in the Indian queenless ant Diacamma indicum Which relocate their colonies by means of tandem running. Individual ants were used as nodes and tandem runs as directed edges to construct unweighted networks. Network parameters were characterized in control relocations （CRs） and in relocations where the node with the highest outdegree, that is, the Maximum tandem leader （Max TL） was experimentally removed. These were then compared to 1） randomized networks, 2） simu- lated networks in which Max TL was removed, and 3） simulated networks with removal of a random leader. Not only was there complete recovery of the task, but the manner in which it was organized when Max TL was removed was comparable to CRs. The results obtained from our empirical study were significantly different from the results predicted by simulations of leader removal. At an individual level, the Max TL had a significantly higher outdegree than expected by chance alone and in her absence the substitute Max TL did comparable work. In addition, the position of the Max TL in the pathway of information flow was conserved in control and experimentally manipulated conditions. Understanding the organization of this critical event as more than the sum of individual interactions using network parameters allows us to appreciate the dynamic response of groups to perturbations.

关键词： Diacamma indicum division of labor networks relocation tandem running

Assessment of Changes in Water Retention Areas in Eastern Dhaka Using RS and GIS

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地学前缘 2009年第S1期16卷 185-186页

作者： Khokon sona Rajbhar Watsan Unit UNHCR Sub OfficeNew CottageMotel Road

Water retention areas are major natural elements of an urban *** areas have different functions of the physical *** Dhaka(Capital city of Bangladesh),these retention areas are encroached by different land development *** the recent years,water logging,drainage congestion and differrent types of problems have been generated by unplanned urban *** study was conducted to estimate the change in the retention area in eastern part of Dhaka over a period of last 15 years based on satellite *** different satellites images(Landsat TM,Landsat ETM Plus and IKONOS)have been used in the study to observe

关键词： Image Wetland GIS RS

Peripherally Inserted Central Catheters in Critically Ill Patients-Complications and Its Preventive Measures

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Peripherally Inserted Central Catheters in Critically Ill Pa...

作者： sona DUWADI 重庆医科大学

学位级别：硕士

A peripherally inserted central catheter（PICC）is extensively used in a critical care setting as it plays a vital role in providing safe central venous ***,it is associated with several complications,which should be detected for several important purposes for instance for reducing patient’s improvement duration,reducing health care cost and declining incidences of various complications associated with ***,this study aims to contribute in outlining the current standard guidelines and literature concerning,PICC-related complication and measures to prevent these complications with evidence based nursing in its *** databases（CINAHL,PubMed,VIP,CNKI,Cochrane,Embase and Google Scholar）were searched between 2006 and 2017 using search terms,namely,complication,critical care,critically ill,ICU,PICC and prevention.A manual search of the reference lists of found papers were *** spite of the expected benefits of PICC,several factors are influencing the nurses in providing the care of the patient in clinical *** the evidence-based guidelines regarding insertion technique,early detection of complication and care bundle on PICC is significant in complication *** of education,training and appropriate multidisciplinary approaches on PICC care among health care providers is the key to prevent ***,the strict care of indwelling PICC lines,the targeted and reasonable PICC associated complication prevention and nursing care has a major clinical significance in reducing the occurrence of potential PICC complications.

关键词：危重病人静脉置管并发症

Cryptosporidium parvum oocyst directed assembly of gold nanoparticles and graphene oxide

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Frontiers of Chemical Science and Engineering 2019年第3期13卷 608-615,F0004页

作者： sona Jain Zhicheng Huang Brent R. Dixon Syed Sattar Juewen Liu Department of Chemistry Waterloo Institute for NanotechnologyUniversity of WaterlooOntarioN2L3G1Canada Bureau of Microbial Hazards Food DirectorateHealth CanadaOntarioK1A 0K9Canada Faculty of Medicine University of OttawaOntarioK1H 8M5Canada

Understanding the interactions between inorganic nanomaterials and biological species is an important topic for surface and environmental chemistry. In this work, we systematically studied the oocysts of Cryptosporidium pa r v u m as a model protozoan parasite and its interaction with gold nanoparticles (AuNPs) and graphene oxide (GO). The as-prepared citrate-capped AuNPs adsorb strongly on the oocysts leading to a vivid color change. The adsorption of the AuNPs was confirmed by transmission electron microscopy. Heat treatment fully inhibited the color change, indicating a large change of surface chemistry of the oocysts that can be probed by the AuNPs. Adding proteases such as trypsin and proteinase K partially inhibited the color change. DNA-capped AuNPs, on the other hand, could not be adsorbed by the oocysts. GO was found to wrap around the oocysts forming a conformal shell reflecting the shape of the oocysts. Both citratecapped AuNPs and GO compromised the membrane integrity of the oocysts as indicated by the propidium iodide staining experiment, and they may be potentially used for inactivating the oocysts. This is the first example of using nanomaterials to probe the surface of the oocysts, and it suggests the possibility of using such organisms to template the assembly of nanomaterials.

关键词： nanomaterials toxicology water biosensors

Mosaicing of multiplanar regions through autonomous navigation of off-the-shelf quadcopter

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IET Cyber-Systems and Robotics 2019年第3期1卷 81-92页

作者： Meghshyam G.Prasad sona Praneeth Akula Anirudh Vemula Sharat Chandran Department of Computer Science and Engineering IIT BombayIndia Robotics Institute Carnegie Mellon UniversityPA 15213USA

The real world is made up of multiplanar and curved *** such surfaces with an orthographic view using a handheld camera is tiring if the scene encompasses a view larger than the camera field of *** the scene is geographically beyond the reach of humans,or access to the scene is denied,it is not possible to take such a frontal view of the scene from handheld *** advent of inexpensive flying vehicles such as quadcopters enables the orthographic imaging of large surfaces for later analysis either for leisure or serious scientific ***,manual navigation of the quadcopter around such surfaces is tedious and results are not *** this paper,the authors present a method for autonomous navigation of a quadcopter for imaging multiplanar *** proposed method builds on the existing parallel tracking and mapping based approach to create an approximate sparse three-dimensional map of the input ***,the authors determine precise locations for obtaining videos for each bounded plane,and then autonomously manoeuver the quadcopter at these *** results in an end-to-end application for visualising scenes with an off-the-shelf quadcopter.

关键词： Mosaic autonomous shelf

Designing broadband fiber optic parametric amplifier based on near-zero single ZDW PCF with ultra-flat nature

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Chinese Optics Letters 2017年第7期15卷 31-35页

作者： Partha sona Maji Ritwick Das School of Physical Sciences National Institute of Science Education and Research

We propose a broadband fiber optic parametric amplifier（FOPA） based on a near-zero ultra-flat dispersion profile with a single zero-dispersion wavelength（ZDW） by using a selective liquid infiltration *** amplifier gain and bandwidth is investigated for a variety of fiber lengths, pump power, and operating wavelengths. It is observed that sufficient peak gains and broader bandwidths can be achieved with a small negative anomalous dispersion（β2≤ 0） and a positive value of the 4th-order dispersion parameter（t β4）around the pump. We can optimize an FOPA with a bandwidth of more than 220 nm around the communications wavelength.

关键词： amplifier broadband optic parametric bandwidth infiltration anomalous optimize matching gains

A Comparison Between Male and Female in Their Willingness to Communicate and Use of Socio-cognitive Strategies

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Journal of Philosophy Study 2019年第7期9卷 408-413页

作者： sona Harare Islamic Azad University of Ayatolah Amoli AmolIran

Willingness to communicate illustrates anyone’s tendency and wish to commence a ***,socio-cognitive strategies are used when people want to interact with others and face some *** aim of this study was *** first aim was to investigate the difference in willingness to communicate between Iranian male and *** second aim was to distinguish the frequency of socio-cognitive strategies used by Iranian advance students based on their *** these ends,32 advance learners(16 males and 16 females)were given the willingness to communicate questionnaire developed by MacIntyre,Baker,Clément,and Conrod(2001)and the socio-cognitive strategy use *** range of the participants’age was 17-23 in both males and *** analyze the result of the socio-cognitive strategies use,frequencies were *** result showed that although there were some similarities and differences between males and females while using socio-cognitive strategies,the differences were more in social strategies than cognitive *** collecting the data from the questionnaires and calculating the means of the two groups,an independent sample T-test was run to compute the significant differences between the two *** result of the willingness to communicate questionnaire revealed that males had more tendency in communication than ***,the result of the socio-cognitive strategy questionnaire showed that both groups are similar in cognitive strategy use,but they are different in social strategy use.

关键词： willingness to communicate socio-cognitive strategies EFL learners communication apprehension Oxford’s strategy classification system Triadic Reciprocal Determinism