A comparative study of MRI versus arthroscopic findings in ACL and meniscal injuries of the knee

Background: This study was conducted to compare accuracy of MRI findings taking arthroscopy as standard in knee injuries.Methods: All patients attending our hospital with knee injury underwent clinical examination. Out of them 100 patients with knee injury were subjected to clinical examination, MRI and then Arthroscopy. The results were compared and analyzed using various statistical tests. The accuracy, sensitivity and specificity were calculated based on these arthroscopic and MRI findings.Results: The accuracy of clinical diagnosis in our study was 88% for ACL tears and 85% for meniscal tears. Our study proved high sensitivity and specificity and almost high accuracy for ACL injuries of knee joint in comparison to arthroscopy. MRI is an excellent screening tool for therapeutic arthroscopy. We can avoid diagnostic arthroscopy in patients with knee injuries having equivocal clinical and MRI examination and go on for therapeutic modality. Conclusions: For the assessment of ligamentous and meniscal injuries magnetic resonance imaging (MRI) is accurate and noninvasive modality. It can be used as a first line investigation but arthroscopy still remains gold standard in diagnosing ACL and meniscal injuries.

Formulation and Evaluation of Liquid Filled Hard Gelatin Capsule of Febuxostat

Liquid filled hard gelatin capsule are well recognized as a solid dosage form for convenient administration of drugs orally in a liquid form. This liquid composition available help the most challenging drug compounds in capsules has increased significantly in recent years. The drugs which have low solubility, poor bioavailability, low melting point, critical stability are the perfect candidate for liquid filling in capsule. The current study presents the formulation aspects, filling and sealing aspects of capsule, evaluation parameters of the liquid filled hard gelatin capsule using Febuxostat as drug, oils (Arachis oil, Coconut oil, Olive oil) as solvents, Glyceryl monostearate as solubilizing agent, Butylated hydroxy toluene as antioxidant, Methyl paraben & Propyl paraben as preservatives. A capsule formed F3 formulation shows maximum drug release and drug content among all the formulations. Keywords: Liquid filled hard gelatin capsule, Febuxostat, Arachis oil, Coconut oil, Olive oil, Glyceryl monostearate, Butylated hydroxy toluene, Methyl paraben, Propyl paraben

Flexible Ink‐Jet Printed Polymer Light‐Emitting Diodes using a Self‐Hosted Non‐Conjugated TADF Polymer

Thermally activated delayed fluorescent (TADF) emitters have become the leading emissive materials for highly efficient organic light-emitting diodes (OLEDs). The deposition of these materials in scalable and cost-effective ways is paramount when looking toward the future of OLED applications. Herein, a simple OLED with fully solution-processed organic layers is introduced, where the TADF emissive layer is ink-jet printed. The TADF polymer has electron and hole conductive side chains, simplifying the fabrication process by removing the need for additional host materials. The OLED has a peak emission of 502 nm and a maximum luminance of close to 9600 cd m$_{−2}$. The self-hosted TADF polymer is also demonstrated in a flexible OLED, reaching a maximum luminance of over 2000 cd m$_{−2}$. These results demonstrate the potential applications of this self-hosted TADF polymer in flexible ink-jet printed OLEDs and, therefore, for a more scalable fabrication process

Supramolecular Organization in Fluorene/Indenofluorene - Oligothiophene Alternating Conjugated Copolymers

peer reviewedA series of conjugated copolymers containing fluorene or indenofluorene units alternating with oligothiophene segments, with potential interest for use as the active layer in field-effect transistors, is investigated. Atomic force microscopy analysis of the morphology of thin deposits shows either the formation of fibrillar structures, which are the signature of long-range p stacking, or the presence of untextured aggregates, resulting from disordered assembly. These morphologies are interpreted in terms of the supramolecular organization of the conjugated chains. Molecular modeling simulations indicate that the commensurability between the lengths of the monomer units and the presence of alkyl side groups are the two key structural factors governing the chain organization into highly ordered assemblies. The most favorable structures are those combining fluorene (indenofluorene) units with unsubstituted bithiophene (terthiophene) segments

Inkjet‐Printed Self‐Hosted TADF Polymer Light‐Emitting Diodes

Thermally activated delayed fluorescent (TADF) materials are extensively investigated as organic light-emitting diodes (OLEDs) with TADF emitting layers demonstrating high efficiency without the use of heavy metal complexes. Therefore, solution-processable and printable TADF emitters are highly desirable, moving away from expensive vacuum deposition techniques. In addition, using emissive materials not requiring an external host simplifies the fabrication process significantly. Herein, OLEDs using a solution-processable TADF polymer that do not need an external host are introduced. The non-conjugated TADF polymer features a TADF emitter (4-(9H-carbazol-9-yl)-2-(3′-hydroxy-[1,1′-biphenyl]-3-yl)-isoindoline-1,3-dione) as a side chain, as well as a hole-transporting side chain and an electron-transporting side chain on an inactive polymer backbone. All organic layers of the OLEDs are fabricated using solution processing methods. The OLEDs with inkjet-printed emissive layers have comparable maximum current and external quantum efficiency as their spin-coated counterparts, exceeding luminance of 2000 cd m$^{-2}$. The herein-explored strategy is a viable route toward self-hosted printable TADF OLEDs

Doped MXenes—A new paradigm in 2D systems: Synthesis, properties and applications

Since 2011, 2D transition metal carbides, carbonitrides and nitrides known as MXenes have gained huge attention due to their attractive chemical and electronic properties. The diverse functionalities of MXenes make them a promising candidate for multitude of applications. Recently, doping MXene with metallic and non-metallic elements has emerged as an exciting new approach to endow new properties to this 2D systems, opening a new paradigm of theoretical and experimental studies. In this review, we present a comprehensive overview on the recent progress in this emerging field of doped MXenes. We compare the different doping strategies; techniques used for their characterization and discuss the enhanced properties. The distinct advantages of doping in applications such as electrocatalysis, energy storage, photovoltaics, electronics, photonics, environmental remediation, sensors, and biomedical applications is elaborated. Additionally, theoretical developments in the field of electrocatalysis, energy storage, photovoltaics, and electronics are explored to provide key specific advantages of doping along with the underlying mechanisms. Lastly, we present the advantages and challenges of doped MXenes to take this thriving field forward

Synthesis, Characterization and Comparative Study of Thiophene-Benzothiadiazole Based Donor-Acceptor-Donor (D-A-D) Materials

peer reviewedThe synthesis and characterization of solution processable donor-acceptor-donor (D-A-D) based conjugated molecules with varying ratios of thiophene as donor (D) and benzothiadiazole as acceptor (A) are reported. Optical, electrochemical, thermal, morphological and organic thin film transistor (OTFT) device properties of these materials were investigated. The thermal and polarized optical microscope analysis indicates that the materials having higher D/A ratios exhibit both liquid crystalline (LC) and OTFT behavior. AFM analysis of the materials having D/A ratios of 3 and 4 (3T1B and 4T1B) show well ordered structures, resulting from strong p-p interchain interactions compared to the other molecules in this study. A XRD patterns for 3T1B and 4T1B thin films also shows high crystalline ordering. Solution processed OTFTs of 3T1B and 4T1B have shown un-optimized charge carrier mobilities of 2 × 10-2 cm2 V-1 s-1 and 4 × 10-3 cm2 V-1 s-1, respectively on bare Si/SiO2 substrate

Characteristics and freezability of Gir bull semen

The present research was undertaken to study the characteristics of fresh and cryo-preserved semen of elite pure breed Gir (Bos indicus) bulls. The mean values of fresh seminal parameters in neat semen viz. seminal volume (ml), sperm concentration (millions/ml), progressive sperm motility (%), live sperm (%), intact acrosome (%), total morphological sperm abnormalities (%), hypo osmotic swelling (HOS %) and sperm penetration distance (SPD- mm) were 4.99 ± 0.26, 895.33 ± 82.68, 69.10 ± 0.75, 72.16 ± 0.64, 84.42 ± 0.77, 15.96 ± 0.44, 60.12 ± 1.19 and 31.32 ± 0.70, respectively. Sperm concentration, individual motility, live sperm, total sperm abnormalities and sperm penetration distance differed significantly between bulls. The semen was extended, filled and sealed in 0.25 ml straws maintaining 20 million spermatozoa/straw and cryo-preserved using programmable bio freezer (IMV). Cryo-preserved semen was assessed 24 h after freezing and immediately after thawing. Freezing significantly lowered progressive sperm motility (69.10 ± 0.75 vs 53.81 ± 0.61), intact acrosome (84.42 ± 0.77 vs 75.69 ± 1.10), HOST (60.12 ± 1.19 vs 55.71 ±1.33) and CMPT (31.32 ± 0.70 vs 27.97 ±0.72). Whereas, significantly higher percentages of sperm abnormalities (15.96 ± 0.44 vs 16.92 ± 0.57) were observed after freezing