LIVIVO - Search results -

Search results

Result 1 - 10 of total 489

Search options

Article ; Online: A macro-micro FE and ANN framework to assess site-specific bone ingrowth around the porous beaded-coated implant: an example with BOX® tibial implant for total ankle replacement.

Minku / Ghosh, Rajesh

Medical & biological engineering & computing

2024

Abstract: The use of mechanoregulatory schemes based on finite element (FE) analysis for the evaluation of bone ingrowth around porous surfaces is a viable approach but requires significant computational time and effort. The aim of this study is to develop a ... ...

Abstract	The use of mechanoregulatory schemes based on finite element (FE) analysis for the evaluation of bone ingrowth around porous surfaces is a viable approach but requires significant computational time and effort. The aim of this study is to develop a combined macro-micro FE and artificial neural network (ANN) framework for rapid and accurate prediction of the site-specific bone ingrowth around the porous beaded-coated tibial implant for total ankle replacement (TAR). A macroscale FE model of the implanted tibia was developed based on CT data. Subsequently, a microscale FE model of the implant-bone interface was created for performing bone ingrowth simulations using mechanoregulatory algorithms. An ANN was trained for rapid and accurate prediction of bone ingrowth. The results predicted by ANN are well comparable to FE-predicted results. Predicted site-specific bone ingrowth using ANN around the implant ranges from 43.04 to 98.24%, with a mean bone ingrowth of around 74.24%. Results suggested that the central region exhibited the highest bone ingrowth, which is also well corroborated with the recent explanted study on BOX®. The proposed methodology has the potential to simulate bone ingrowth rapidly and effectively at any given site over any implant surface.
Language	English
Publishing date	2024-02-07
Publishing country	United States
Document type	Journal Article
ZDB-ID	282327-5
ISSN	1741-0444 ; 0025-696X ; 0140-0118
ISSN (online)	1741-0444
ISSN	0025-696X ; 0140-0118
DOI	10.1007/s11517-024-03034-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 294: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article: Effect of silencing

Rajesh, Vavilapalli / Jangra, Sumit / Ghosh, Amalendu

Frontiers in microbiology

2023 Volume 14, Page(s) 1254246

Abstract: ... Thrips ... ...

Abstract	Thrips palmi
Language	English
Publishing date	2023-10-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2587354-4
ISSN	1664-302X
ISSN	1664-302X
DOI	10.3389/fmicb.2023.1254246
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: The role of the depth of resection of the distal tibia on biomechanical performance of the tibial component for TAR: A finite element analysis with three implant designs.

Jyoti / Ghosh, Rajesh

Medical engineering & physics

2023 Volume 119, Page(s) 104034

Abstract: The depth of resection of the tibia bone in total ankle replacement (TAR) may influence implant-bone micromotion and stress shielding. High implant-bone micromotion and stress-shielding lead to aseptic loosening of the tibial component for TAR. The aim ... ...

Abstract	The depth of resection of the tibia bone in total ankle replacement (TAR) may influence implant-bone micromotion and stress shielding. High implant-bone micromotion and stress-shielding lead to aseptic loosening of the tibial component for TAR. The aim was to improve the outcomes of the different designs of TAR (STAR, Mobility, and Salto) with the variation of the depth of resection of the distal tibia bone. Finite element (FE) models of the implanted tibia with the depth of resection varying from 6 mm to 16 mm and of the intact tibia was prepared. The value of micromotion increased as the depth of resection increased. The micromotion increased in the proximal anterior-posterior portion of the pegs for STAR, the posterior part of the stem for Mobility, and the proximal lateral portion of the keel for Salto with the increase in the depth of resection. Whereas, the stresses (von Mises) decreased in some regions and increased in some regions depending upon the implant design. But overall stresses decreased in the tibia bone. Furthermore, the mean stress shielding increased in all the designs as the depth of resection increased. This in silico study indicated that the depth of resection should be given more importance during TAR surgery. The ideal depth of resection should be minimum i.e., 6 mm based on this FE study.
MeSH term(s)	Finite Element Analysis ; Tibia/surgery ; Arthroplasty, Replacement, Ankle ; Prostheses and Implants
Language	English
Publishing date	2023-08-07
Publishing country	England
Document type	Journal Article
ZDB-ID	1181080-4
ISSN	1873-4030 ; 1350-4533
ISSN (online)	1873-4030
ISSN	1350-4533
DOI	10.1016/j.medengphy.2023.104034
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 2231: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Ni

Chakrabortty, Rajesh / Ghosh, Suman / Ganesh, Venkataraman

Organic letters

2024 Volume 26, Issue 4, Page(s) 792–797

Abstract: In the present work, we demonstrate a regioselective [2 + 2 + 2] cyclotrimerization of 1,3-diynes catalyzed by ... ...

Abstract	In the present work, we demonstrate a regioselective [2 + 2 + 2] cyclotrimerization of 1,3-diynes catalyzed by Ni
Language	English
Publishing date	2024-01-22
Publishing country	United States
Document type	Journal Article
ISSN	1523-7052
ISSN (online)	1523-7052
DOI	10.1021/acs.orglett.3c03863
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: A combined FE-hybrid MCDM framework for improving the performance of the conical stem tibial design for TAR with the addition of pegs.

Jyoti / Ghosh, Rajesh

Computer methods and programs in biomedicine

2023 Volume 237, Page(s) 107574

Abstract: Background and objectives: The conical stemmed design of the tibial component for total ankle replacement (TAR) (example Mobility design) uses a single intramedullary stem for primary fixation. Tibial component loosening is a common mode of failure for ... ...

Abstract	Background and objectives: The conical stemmed design of the tibial component for total ankle replacement (TAR) (example Mobility design) uses a single intramedullary stem for primary fixation. Tibial component loosening is a common mode of failure for TAR. Primary causes of loosening are lack of bone ingrowth due to excessive micromotion at the implant-bone interface and bone resorption due to stress shielding after implantation. The fixation feature of the conical stemmed design can be modified with the addition of small pegs to avoid loosening. The aim of the study is to select the improved design for conical stemmed TAR using a combined Finite Element (FE) hybrid Multi-Criteria Decision-Making (MCDM) framework. Methods: The geometry and material properties of the bone for FE modeling were extracted from the CT data. Thirty-two design alternatives with varying pegs in number (one, two, four, eight), location (anterior, posterior, medial, lateral, anterior-posterior, medial-lateral, equally spaced), and height (5 mm, 4 mm, 3 mm, 2 mm) were prepared. All models were analyzed for dorsiflexion, neutral, and plantarflexion loading. The proximal part of the tibia was fixed. The implant-bone interface coefficient of friction was taken as 0.5. The implant-bone micromotion, stress shielding, volume of bone resection, and surgical simplicity were the important criteria considered for evaluating the performance of TAR. The designs were compared using a hybrid MCDM method of WASPAS, TOPSIS, EDAS, and VIKOR. The weight calculations were based on fuzzy AHP and the final ranks on the Degree of Membership method. Results: The addition of pegs decreased the mean implant-bone micromotions and increased stress shielding. There was a marginal decrease in micromotion and a marginal increase in stress shielding when the peg heights were increased. The results of hybrid MCDM indicated that the most preferable alternative designs were two pegs of 4 mm height in the AP direction to the main stem, two pegs of 4 mm height in the ML direction, and one peg of 3 mm height in the A direction. Conclusions: Outcomes of this study suggest that the addition of pegs can reduce the implant-bone micromotions. Modified three designs would be useful by considering implant-bone micromotions, stress shielding, volume of bone resection, and surgical simplicity.
MeSH term(s)	Tibia/surgery ; Arthroplasty, Replacement, Ankle ; Prosthesis Design ; Arthroplasty, Replacement, Knee/methods ; Finite Element Analysis ; Stress, Mechanical
Language	English
Publishing date	2023-04-27
Publishing country	Ireland
Document type	Journal Article
ZDB-ID	632564-6
ISSN	1872-7565 ; 0169-2607
ISSN (online)	1872-7565
ISSN	0169-2607
DOI	10.1016/j.cmpb.2023.107574
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 521: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: A new mathematical model of compressive stress-strain behaviour of low viscosity and high viscosity bone cement with different strain rates.

Chaurasiya, Sonalal Prasad / Ghosh, Rajesh

Medical engineering & physics

2023 Volume 117, Page(s) 104001

Abstract: A new mathematical model of compressive stress-strain behaviour of low viscosity (LV) and high viscosity (HV) bone cement has been proposed to capture large uniaxial deformation under constant applied strain rate by incorporating three-term power law. ... ...

Abstract	A new mathematical model of compressive stress-strain behaviour of low viscosity (LV) and high viscosity (HV) bone cement has been proposed to capture large uniaxial deformation under constant applied strain rate by incorporating three-term power law. The modeling capacity of the proposed model has been validated using uniaxial compressive test under eight different low strain rates ranging from 1.39 × 10
MeSH term(s)	Bone Cements ; Polymethyl Methacrylate ; Viscosity ; Pressure ; Models, Theoretical ; Compressive Strength
Chemical Substances	Bone Cements ; Polymethyl Methacrylate (9011-14-7)
Language	English
Publishing date	2023-06-01
Publishing country	England
Document type	Journal Article
ZDB-ID	1181080-4
ISSN	1873-4030 ; 1350-4533
ISSN (online)	1873-4030
ISSN	1350-4533
DOI	10.1016/j.medengphy.2023.104001
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 2231: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Comparative studies on the aggregate formation of synthesized zwitterionic gemini and monomeric surfactants in the presence of the amphiphilic antipsychotic drug chlorpromazine hydrochloride in aqueous solution: an experimental and theoretical approach.

Banik, Rajesh / Das, Sourav / Ghosh, Asitanga / Ghosh, Soumen

Soft matter

2023 Volume 19, Issue 41, Page(s) 7995–8010

Abstract: The formation of aggregates, which are widely used in the field of biochemistry and the medical industry, was studied with different compositions of alkyl betaine gemini surfactant ( ... ...

Abstract	The formation of aggregates, which are widely used in the field of biochemistry and the medical industry, was studied with different compositions of alkyl betaine gemini surfactant (C
MeSH term(s)	Surface-Active Agents/chemistry ; Antipsychotic Agents/chemistry ; Chlorpromazine/chemistry ; Water/chemistry ; Chemical Phenomena
Chemical Substances	Surface-Active Agents ; Antipsychotic Agents ; Chlorpromazine (U42B7VYA4P) ; Water (059QF0KO0R)
Language	English
Publishing date	2023-10-25
Publishing country	England
Document type	Journal Article
ZDB-ID	2191476-X
ISSN	1744-6848 ; 1744-683X
ISSN (online)	1744-6848
ISSN	1744-683X
DOI	10.1039/d3sm00907f
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Fabrication of highly conductive graphene paper for supercapacitors with a one-step hydrothermal method

Rajesh Ghosh / Mohd Salman Siddiqui / Hemen Kalita

Carbon Trends, Vol 14, Iss , Pp 100317- (2024)

1481

Abstract: We present a facile one-step hydrothermal method for the fabrication of free-standing graphene paper using aqueous graphene oxide (GO) dispersion as the starting material. Notably, the method does not require the use of any additives for the reduction ... ...

Abstract	We present a facile one-step hydrothermal method for the fabrication of free-standing graphene paper using aqueous graphene oxide (GO) dispersion as the starting material. Notably, the method does not require the use of any additives for the reduction and preparation of the graphene paper. The resulting graphene paper exhibits a high degree of reduction, as confirmed by X-ray photoelectron spectroscopy (XPS) analysis, revealing a carbon-to-oxygen (C/O) ratio of ∼7. The fabricated graphene paper also demonstrates excellent conductivity, with a measured value of ∼1900 S/m, and sheet resistance of around 100 Ω/sq. Furthermore, the energy storage capability of the graphene paper based electrode is evaluated, which shows a promising specific capacity of 249 F/g at a current density of 1 A/g in 1M H2SO4 as the ionic medium. Additionally, the electrode has also demonstrated remarkable energy density and power density values of 28.68 Wh/Kg and 455 W/Kg, respectively. Overall, the resulting graphene paper exhibits high conductivity and excellent electrochemical performance, making it a promising candidate for various energy storage applications.
Keywords	graphene paper ; hydrothermal ; additive free ; highly conducting ; supercapacitor ; Chemistry ; QD1-999
Subject code	620
Language	English
Publishing date	2024-03-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Induction of abortion in the first trimester of pregnancy using letrozole and misoprostol combination versus misoprostol alone - A comparative observational study

Swarnali Biswas / Mallika Sengupta / Debdatta Ghosh / Rajesh De

Asian Journal of Medical Sciences, Vol 15, Iss 1, Pp 94-

2024 Volume 101

Abstract: Background: Medical abortion is safer than surgical abortion. Several studies have shown that combination of antiprogesterone drug mifepristone and prostaglandin misoprostol can increase complete abortion rate in medical management of first-trimester ... ...

Abstract	Background: Medical abortion is safer than surgical abortion. Several studies have shown that combination of antiprogesterone drug mifepristone and prostaglandin misoprostol can increase complete abortion rate in medical management of first-trimester miscarriage compared to misoprostol alone. Letrozole, an aromatase inhibitor, has emerged as an alternative to mifepristone for induction of medical abortion as mifepristone is expensive and not registered in many countries. Aims and Objectives: The aim of the present study was to evaluate the safety and efficacy of combined regimen of letrozole and misoprostol in first-trimester medical abortion compared to misoprostol alone. Materials and Methods: It was a comparative observational study conducted at R. G. Kar Medical College, a tertiary care hospital in West Bengal, India. The study population was the antenatal mothers booked at antenatal clinic willing for termination of pregnancy at <12 weeks of gestational age. Participants were allocated, 39 in each group in a non-randomized manner. Patients in one group (Group A) were posted for medical abortion with combination regimen of tablet letrozole (10 mg) once daily for 3 days followed by application of tablet misoprostol 800 mcg sublingually on day 4. In other group (Group B), patients were on misoprostol-only regimen with the application of tablet misoprostol 800 mcg sublingually. Results: Induction-abortion time was significantly less in the letrozole group (11±0.79 h) than the misoprostol group (13.23±0.81 h), P=0.0001. Complete abortion rate was significantly higher in the letrozole group compared to misoprostol group (84.62% and 64.10%, respectively, P=0.03). 15.38% patients in the letrozole group and 35.90% patients in the misoprostol group had excessive vaginal bleeding and the difference was statistically significant, P=0.03. The duration of vaginal bleeding was also significantly less in the letrozole group (2.45±0.29 days) than the misoprostol group (2.82±0.37 days), P<0.0001. Incidence of ...
Keywords	induction of abortion ; letrozole and misoprostol ; gestational age ; mifepristone ; antenatal mothers ; Medicine ; R
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Manipal College of Medical Sciences, Pokhara
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Exploration of the impact of graphene oxide, acetylenic gemini, and CTAT on the photophysical and aggregation properties of dipolar coumarin 153.

Sardar, Raju / Das, Sourav / Banik, Rajesh / Bhunia, Sayani / Ghosh, Soumen

Physical chemistry chemical physics : PCCP

2024 Volume 26, Issue 11, Page(s) 8900–8918

Abstract: Advanced spectroscopic techniques have been utilized to study the interaction between the laser dye coumarin 153 (C153) and graphene oxide (GO) nanoparticles. GO was synthesized using a modified Hummers' method and characterized by UV-vis spectroscopy, ... ...

Abstract	Advanced spectroscopic techniques have been utilized to study the interaction between the laser dye coumarin 153 (C153) and graphene oxide (GO) nanoparticles. GO was synthesized using a modified Hummers' method and characterized by UV-vis spectroscopy, Raman laser spectroscopy, FTIR-ATR spectroscopy, FESEM, HR-TEM, and XRD techniques. The GO@C153 composite was formed by mixing two aqueous solutions of GO and C153 due to their strong interaction through stacking and hydrophobic interactions. In this case, GO acts as an effective fluorescence quencher for C153 molecules, which undergo H-type aggregation in the presence of GO. The Stern-Volmer equation and time-dependent fluorescence studies were utilized to analyse the mechanism of fluorescence quenching. According to the findings, both static and dynamic quenching processes are responsible for the reduction in fluorescence intensity. The effect of surfactants (both cetyltrimethylammonium
Language	English
Publishing date	2024-03-13
Publishing country	England
Document type	Journal Article
ZDB-ID	1476244-4
ISSN	1463-9084 ; 1463-9076
ISSN (online)	1463-9084
ISSN	1463-9076
DOI	10.1039/d3cp05361j
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito