RETRACTED ARTICLE: Spatial federated learning model for identification of corn leaf diseases

Nilam Sachin Patil,E. Kannan 대한공간정보학회 2024 Spatial Information Research Vol.32 No.2

The Publisher has retracted this article in agreement with the Editor-in-Chief. The article was submitted to be part of a guest-edited issue. An investigation by the publisher found a number of articles, including this one, with a number of concerns, including but not limited to compromised editorial handling and peer review process, inappropriate or irrelevant references or not being in scope of the journal or guest-edited issue. Based on the investigation's fndings the publisher, in consultation with the Editor-in-Chief therefore no longer has confdence in the results and conclusions of this article. Author Nilam Sachin Patil has stated that the authors disagree with this retraction. The online version of this article contains the full text of the retracted article as Supplementary Information.

Synthesis and efficient siRNA delivery of polyamine-conjugated cationic nucleoside lipids

Patil, Sachin Prakash,Yi, Jeong Wu,Bang, Eun-Kyoung,Jeon, Eun Mi,Kim, Byeang Hyean Royal Society of Chemistry 2011 MedChemComm Vol.2 No.6

<P>To advance their use as nonviral gene delivery agents, we have synthesized cationic nucleoside lipids featuring naturally occurring polyamines conjugated at the 5′ position and oleyl groups at the 2′ and 3′ positions of uridine, through chemically stable, but biodegradable, carbamate linkers. The corresponding lipoplexes are efficient and nontoxic vectors for the delivery of siRNA into cells <I>in vitro</I>.</P> <P>Graphic Abstract</P><P>Uridine-polyamine based cationic nucleoside lipids have been synthesized. The corresponding lipoplexes are efficient and nontoxic vectors for siRNA delivery into cells <I>in vitro</I>. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c1md00014d'> </P>

Modeling of friction-stir butt-welds and its application in automotive bumper impact performance Part 1. Thermo-mechanical weld process modeling

Sachin Patil,Yi Yang Tay,Farzad Baratzadeh,Hamid Lankarani 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.6

The demand for better structural performance in joining of components for road vehicles prompts the implementation of aluminum alloy friction stir welding technology in the automotive industry. The aim of current study is the creation of a 3-D finite element (FE) friction thermal model and stir welding (FSW) process of dissimilar aluminum alloy and for the estimation of crash worthiness performance of FSW fabricated shock absorber assembly. Thermo mechanical simulations and analysis are performed to understand the thermal behavior in the FSW weld zones. The developed models are correlated against published experimental results in terms of temperature profile of the weld zone. The developed models are then implemented for fabricating vehicle bumper parts to illustrate the performance of FSW welded components during an impact. Customary sled testing for low-speed guard necessities is performed utilizing a grating blend welded test apparatus at Wichita State University (WSU) at the National Institute for Aviation Research (NIAR). A few guard congregations are then appended to the test installation utilizing FSW and conventional Gas bend GMAW welding strategies. Numerical models are likewise created where limited component investigation is utilized to contrast the anticipated harm and the real harm maintained by both of the FSW and GMAW manufactured guards. During the research, a new FSW weld mold is created that allows for a better representation of the desired progressive crack propagation. The FSW fabricated bumper based on the Johnson-Cook failure model yields better failure prediction and is in good agreement to the test. The results from this study provide a guideline for an accurate finite element modeling of a FSW fabricated components and their application in the crashworthiness of such structural components.

Cancer-Specific Gene Silencing through Therapeutic siRNA Delivery with B Vitamin-Based Nanoassembled Low-Molecular-Weight Hydrogelators

Patil, Sachin Prakash,Kim, Seong-Hoon,Jadhav, Jyoti Ramesh,Lee, Ju-hyun,Jeon, Eun Mi,Kim, Kyong-Tai,Kim, Byeang Hyean American Chemical Society 2014 Bioconjugate chemistry Vol.25 No.8

<P>This paper describes the synthesis, characterization, and <I>in vitro</I> and <I>in vivo</I> siRNA transfection ability of B vitamin-based cationic clickable bolaamphiphiles (VBs). Our VBs derived from vitamins B<SUB>2</SUB>, B<SUB>3</SUB>, B<SUB>5</SUB>, B<SUB>6</SUB>, and B<SUB>7</SUB> formed nanoassembled low-molecular-weight hydrogelators (LMWGs, vitagels). The vitagels <B>VB2</B>, <B>VB6</B>, and <B>VB7</B> (derived from vitamins B<SUB>2</SUB>, B<SUB>6</SUB>, and B<SUB>7</SUB>, respectively) facilitated delivery of small interfering RNAs (siRNA), efficiently silencing gene expression specifically into cancer cell lines; in addition, the LMWGs derived from vitamins B<SUB>3</SUB>, B<SUB>5</SUB>, and B<SUB>6</SUB> were biocompatible. An <I>ex vivo</I> study in a mouse model revealed that the siRNA delivered by the vitagel <B>VB7</B> was located primarily at the site of the tumor. The gene silencing efficiency of vascular endothelial growth factor siRNA delivered by vitagels was dependent on the nature of the vitamin headgroup, the N/P ratio, and, interestingly, the hydrogelation properties of the VBs.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/bcches/2014/bcches.2014.25.issue-8/bc500249g/production/images/medium/bc-2014-00249g_0013.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/bc500249g'>ACS Electronic Supporting Info</A></P>

A low-molecular-weight supramolecular hydrogel of riboflavin bolaamphiphile for VEGF-siRNA delivery

Patil, Sachin Prakash,Jeong, Hyun Seok,Kim, Byeang Hyean The Royal Society of Chemistry 2012 Chemical communications Vol.48 No.71

<P>A low-molecular-weight hydrogel derived from riboflavin (vitamin B<SUB>2</SUB>) that self-assembles to provide supramolecular nanofibers, biocompatible material, can be used to deliver VEGF-siRNA efficiently into human cells by the endocytosis pathway, where the siRNA is functionalized.</P> <P>Graphic Abstract</P><P>A low-molecular-weight hydrogel derived from riboflavin (vitamin B<SUB>2</SUB>) that self-assembles to provide supramolecular nanofibers, biocompatible material, can be used to deliver VEGF-siRNA efficiently into human cells by the endocytosis pathway, where the siRNA is functionalized. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cc34466a'> </P>

Modeling of friction-stir butt-welds and its application in automotive bumper impact performance Part 2. Impact modeling and bumper crash performance

Sachin Patil,Yi Yang Tay,Farzad Baratzadeh,Hamid Lankarani 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7

Ever increasing requirements regarding vehicle safety have led to rapid developments in various joining process. Among FSW widely used for Aluminum alloy welded structure of car body because of their remarkable performance in welding. For a better understanding of this performance, it is necessary to determine the behavior of butt weld in service conditions. In earlier phase of this study, thermo mechanical simulations and analysis are performed to understand the thermal behavior in the FSW weld zones. The developed models are correlated against published experimental results in terms of temperature profile of the weld zone. The objectives of the second part of this work is to develop and demonstrate an FE model of bumper and crash box assembly that would improve on the current modeling techniques for the mechanical response of welds in structural problems.

Quantum dot sensitized solar cell based on TiO₂/CdS/Ag₂S heterostructure

Pawar, Sachin A.,Patil, Dipali S.,Kim, Jin Hyeok,Patil, Pramod S.,Shin, Jae Cheol Elsevier 2017 Optical Materials Vol.66 No.-

<P><B>Abstract</B></P> <P>Quantum dot sensitized solar cell (QDSSC) is fabricated based on a stepwise band structure of TiO<SUB>2</SUB>/CdS/Ag<SUB>2</SUB>S to improve the photoconversion efficiency of TiO<SUB>2</SUB>/CdS system by incorporating a low band gap Ag<SUB>2</SUB>S QDs. Vertically aligned TiO<SUB>2</SUB> nanorods assembly is prepared by a simple hydrothermal technique. The formation of CdS and Ag<SUB>2</SUB>S QDs over TiO<SUB>2</SUB> nanorods assembly as a photoanode is carried out by successive ionic layer adsorption and reaction (SILAR) technique. The synthesized electrode materials are characterized by XRD, XPS, field emission scanning electron microscopy (FE-SEM), Optical, solar cell and electrochemical performances. The results designate that the QDs of CdS and Ag<SUB>2</SUB>S have efficiently covered exterior surfaces of TiO<SUB>2</SUB> nanorods assembly. A cautious evaluation between TiO<SUB>2</SUB>/CdS and TiO<SUB>2</SUB>/CdS/Ag<SUB>2</SUB>S sensitized cells tells that CdS and Ag<SUB>2</SUB>S synergetically helps to enhance the light harvesting ability. Under AM 1.5G illumination, the photoanodes show an improved power conversion efficiency of 1.87%, in an aqueous polysulfide electrolyte with short-circuit photocurrent density of 7.03 mA cm<SUP>−2</SUP> which is four fold higher than that of a TiO<SUB>2</SUB>/CdS system.</P> <P><B>Highlights</B></P> <P> <UL> <LI> QDSSC fabrication using 1D TiO<SUB>2</SUB> nanostructures. </LI> <LI> High surface area for QDs loading. </LI> <LI> Strong absorption in the visible regime for TiO<SUB>2</SUB>/CdS/Ag<SUB>2</SUB>S. </LI> <LI> The QDSSC show improved photocurrents. </LI> <LI> High power conversion efficiency of 1.87%. </LI> </UL> </P>

Alteration of Ag nanowires to Ag/Ag₂S nanowires@CdS core-shell architectures for electrochemical supercapacitors

Patil, Dipali S.,Pawar, Sachin A.,Shin, Jae Cheol Elsevier 2018 JOURNAL OF ALLOYS AND COMPOUNDS Vol.768 No.-

<P><B>Abstract</B></P> <P>Silver nanowire@cadmium sulfide (AgNW@CdS) core-shell nanostructured electrodes were synthesized in two steps. Initially, a layer of AgNWs was coated onto Ni foam by drop casting. CdS was then deposited onto the pre-coated Ni foam by a successive ionic layer adsorption and reaction (SILAR) method. This process converted the Ag nanowires to Ag<SUB>2</SUB>S, which was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. The effects of the CdS layer thickness on AgNWs on the electrochemical properties of the nanostructure were examined by varying the number of SILAR cycles. The resulting AgNWs@CdS electrode exhibited a high areal capacitance of approximately 2662 mFcm<SUP>−2</SUP> at 10 mVs<SUP>−1</SUP> and 810 mFcm<SUP>−2</SUP> at 45 mA applied current.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CdS coated Ag nanowires on Ni foam was prepared by chemical route. </LI> <LI> The Ag nanowires convert into Ag<SUB>2</SUB>S during the deposition of CdS. </LI> <LI> The AgNW@CdS electrode showed a high areal capacitance of 2662 mFcm<SUP>−2</SUP>. </LI> <LI> The positive synergistic effect of Ag nanowires and CdS is observed. </LI> </UL> </P>

Quantum Dot Sensitized Solar Cells Based on TiO2/AgInS2

Sachin A. Pawar,정재필,Dipali S. Patil,Vivek M. More,Rochelle S. Lee,신재철,최원준 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.72 No.10

Quantum dot heterojunctions with type-II band alignment can efficiently separate photogenerated electron-hole pairs and, hence, are useful for solar cell studies. In this study, a quantum dot sensitized solar cell (QDSSC) made of TiO2/AgInS2 is achieved to boost the photoconversion efficiency for the TiO2-based system by varying the AgInS2 layer’s thickness. The TiO2 nanorods array film is prepared by using a simple hydrothermal technique. The formation of a AgInS2 QD-sensitized TiO2-nanorod photoelectrode is carried out by successive ionic layer adsorption and reaction (SILAR) technique. The effect of the QD layer on the performance of the solar cell is studied by varying the SILAR cycles of the QD coating. The synthesized electrode materials are characterized by using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, high resolution transmission electron microscopy and solar cell performances. The results indicate that the nanocrystals have effectively covered the outer surfaces of the TiO2 nanorods. The interfacial structure of quantum dots (QDs)/TiO2 is also investigated, and the growth interface is verified. A careful comparison between TiO2/AgInS2 sensitized cells reveals that the trasfer of electrons and hole proceeds efficiently, the recombination is suppressed for the optimum thickness of the QD layer and light from the entire visible spectrum is utilised. Under AM 1.5G illumination, a high photocurrent of 1.36 mAcm−2 with an improved power conversion efficiency of 0.48% is obtained. The solar cell properties of our photoanodes suggest that the TiO2 nanorod array films co-sensitized by AgInS2 nanoclusters have potential applications in solar cells.

Core-shell structure of Co₃O₄@CdS for high performance electrochemical supercapacitor

Patil, Dipali S.,Pawar, Sachin A.,Shin, Jae Cheol Elsevier 2018 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.335 No.-

<P><B>Abstract</B></P> <P>Core-shell nanostructures of Co<SUB>3</SUB>O<SUB>4</SUB>@CdS were synthesized on nickel foam using a facile, economical, scalable, and one pot hydrothermal method and a successive ionic layer adsorption and reaction (SILAR) method. The synergistic effects arising due to the hexagonal Co<SUB>3</SUB>O<SUB>4</SUB> sheets and CdS nanostructures were assessed for potential electrochemical energy storage applications. The effects of the CdS SILAR coating cycles were examined by varying the number of cycles from 2 to 10. The Co<SUB>3</SUB>O<SUB>4</SUB>@CdS core-shell electrode exhibited a high specific capacitance of 1539 Fg<SUP>−1</SUP> (1385 Cg<SUP>−1</SUP>) and 1322 Fg<SUP>−1</SUP> (1189 Cg<SUP>−1</SUP>) at 10 mVs<SUP>−1</SUP> and 30 mA, respectively, with 98.5% capacitance retention after 2000 cycles. In addition, the Co<SUB>3</SUB>O<SUB>4</SUB>@CdS core shell nanostructure-based symmetric supercapacitor displayed excellent capacitive characteristics with a specific capacitance of 360 Fg<SUP>−1</SUP> (288 Cg<SUP>−1</SUP>) and 99 Fg<SUP>−1</SUP> (79 Cg<SUP>−1</SUP>) at 10 mVs<SUP>−1</SUP> and 10 mA, respectively, and 92% capacitance retention after 2000 cycles.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CdS coated Co<SUB>3</SUB>O<SUB>4</SUB> hexagonal sheets on Ni foam was prepared by chemical route. </LI> <LI> The uniform shell (CdS) layer acts as conductive layer. </LI> <LI> The Co<SUB>3</SUB>O<SUB>4</SUB>@CdS based symmetric device showed a specific capacitance of 390 Fg<SUP>−1</SUP>. </LI> <LI> The positive synergistic effect of Co<SUB>3</SUB>O<SUB>4</SUB> and CdS is observed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>A schematic illustration of synthesis of Co<SUB>3</SUB>O<SUB>4</SUB> hexagonal sheets and CdS nanoparticle-decorated Co<SUB>3</SUB>O<SUB>4</SUB> hexagonal sheets on Ni-foam.</P> <P>[DISPLAY OMISSION]</P>