Molecular Design and Alignment for Ambipolar SCLC Mobility in Self-Assembled Columnar Discogens.

The future of next-generation electronics relies on low-cost organic semiconductors that are tailored to simultaneously provide all requisite optoelectronic properties, focusing greatly on ambipolar charge-transport and solution processability. In this regard, room-temperature discotic liquid crystals (DLCs) are potential candidates, where quasi-1D self-assembly affords a charge-transport channel along their columnar axis. This work shows a molecular design strategy by utilizing anthraquinone as the primary motif, surrounded by ester functionalized tri-alkoxy phenyl units to develop room-temperature DLCs (1.

Multi-stage and multi-colour liquid crystal reflections using a chiral triptycene photoswitchable dopant.

The photomodulation of the helical pitch of cholesteric liquid crystals results in dynamic and coloured canvases that can potentially be used in applications ranging from energy-efficient displays to colour filters, anti-counterfeiting tags and liquid crystal (LC) lasers. Here we report on the analysis of a series of photoswitchable chiral dopants that combine the large geometrical change and bistability of hydrazone switches with the efficient helical pitch induction of the chiral motif, triptycene. We elucidate the effects that conformational flexibility, dispersion forces and π-π interactions have on the chirality transfer ability of the dopant.

Unveiling the Obsession: Exercise Addiction among Female Amateur Runners in Delhi-NCR and the Power of Unwavering Commitment.

Aim And Objective: This study was intended for a possible relationship that might exist between exercise addiction and unbending commitment among female amateur runners. Exercise addiction (EA) can be characterized as an obsession with physical activity.

Materials And Methods: The "purposive sampling method" was utilized to collect data.

Tailoring Chiral Discotic Liquid Crystals: Mesophase Engineering through Alternative Approaches and Chain Lengths.

Hydrogen (H)-bonding is crucial in constructing superstructures in chemical (such as chiral discotic liquid crystals (DLCs)) as well as in biological systems due to its specific and directional nature. In this context, we achieved the successful synthesis of two branches of heptazine-based H-bonded complexes using distinct strategies. Hpz*-Es-C , we incorporated chiral alkyl tails (Hpz-chiral) onto the central C symmetric heptazine core, connected to achiral benzoic acid derivatives (Es-C acid) through H-bonding.

Comparison of Palonosetron with Combination of Palonosetron and Dexamethasone in the Prevention of Post Operative Nausea and Vomiting in Patients Undergoing Middle Ear Surgery: A Prospective Randomized Trial.

We compared the use of palonosetron with combination of palonosetron and dexamethasone in prevention of PONV in patients undergoing middle ear surgery under general anaesthesia. Prospective, randomized study was conducted including 90 adult patients who received either palonosetron (0.075 mg) (Group P) or combination of palonosetron (0.

Light Modulated Reversible "On-Off" Transformation of Arylazoheteroarene Based Discotics in Nematic Organization.

Three benzene-1,3,5-tricarboxamide (BTA) core-based molecular systems appended with phenylazo-3,5-dimethylisoxazole photoswitches at the peripheral position through variable-length alkoxy chains have been designed and synthesized. The supramolecular interactions of the mesogens provided discotic nematic liquid crystalline assembly as confirmed by polarized optical microscopy (POM) and X-ray diffraction (XRD) studies. Spectroscopic studies confirmed the reversible photoswitching and excellent thermal stability of the photoswitched states in solution phase and thin film.

Menstrual hygiene management and its determinants among adolescent girls in low-income urban areas of Delhi, India: a community-based study.

Objectives: Menstrual hygiene management (MHM) in developing countries is linked to human rights, social justice, and the education and empowerment of young girls. The objective of this study was to assess menstrual hygiene practices and their determinants among adolescent girls, including school dropouts, and the effects of pad distribution programs in urban resettlement areas of Delhi, India.

Methods: A cross-sectional study was conducted from March 2019 to February 2020 in urban resettlement colonies and 2 villages of Delhi among 1,130 adolescent girls aged 10 to 19 years, who were interviewed face to face.

Deciphering Internal and External π-Conjugation in C -Symmetric Multiple Azobenzene Connected Systems in Self-Assembly.

Two tripodal C -symmetric photoswitchable molecular systems T1 and T2 are reported that have extended conjugation at external and internal positions using an acryl group. The influence of the extended π-bonds in their absorption properties, thermal relaxation of the photoisomers and their propensities in forming supramolecular self-assemblies have been explored through spectroscopy, and microscopic studies. In particular, the investigations on the self-assembly have been carried out using scanning electron microscopy (SEM), transmission electron microscopy (TEM), polarized optical microscopy (POM), X-ray diffraction studies (XRD) and atomic force microscopy (AFM).

Correction: Luminescent columnar discotics as highly efficient emitters in pure deep-blue OLEDs with an external quantum efficiency of 4.7.

Correction for 'Luminescent columnar discotics as highly efficient emitters in pure deep-blue OLEDs with an external quantum efficiency of 4.7%' by Joydip De , , 2022, DOI: 10.1039/d1sm01558c.

Luminescent columnar discotics as highly efficient emitters in pure deep-blue OLEDs with an external quantum efficiency of 4.7.

Development of materials that serve as efficient blue emitters in solution-processable OLEDs is challenging. In this study, we report three derivatives of -symmetric 1,3,5-tris(thien-2-yl)benzene-based highly luminescent room temperature columnar discotic liquid crystals (DLCs) suitable as solid-state emitters in OLED devices. When employed in solution-processed OLEDs, one of the derivatives having the highest photoluminescence quantum yield exhibited a maximum EQE of 4.

Effect of diffusion of anaesthetic gases on fibre-optic view change of laryngeal mask airway and post-operative laryngo-pharyngeal morbidity in children - A randomised controlled trial.

Background And Aims: The diffusion of nitrous oxide (NO) into the air-filled cuff of the classic laryngeal mask airway (LMA) may lead to an increase in cuff pressure (CP) and displacement of LMA affecting its performance. This study was conducted to evaluate the change in optimal position of LMA by fibre-optic bronchoscope, the changes in cuff pressure and oropharyngeal leak pressure (OLP), and post-operative laryngo-pharyngeal morbidity during NO-oxygen (O) anaesthesia in children.

Methods: After ethics committee approval and written informed consent, 84 children, aged 2 to 8 years undergoing lower abdominal surgery using LMA were included.

Perceptions of Frontline Workers, Female Health Workers, and School Teachers in Menstrual Hygiene Promotion among Adolescent Girls of Delhi, India: A Qualitative Study.

Background: Government schemes for the promotion of Menstrual Hygiene Management (MHM) among adolescent girls in India are underpinned by crucial implementation efforts from the frontline health workers, community health workers, and school teachers.

Aim: The aim of the study is to identify the perspectives on menstrual health and hygiene management with regard to government schemes for sanitary pad distribution to adolescent girls among the frontline workers and the government school teachers located in urban resettlement colonies in Delhi.

Methods: In-depth interviews were conducted with 30 accredited social health activisits, 30 Anganwadi Workers (AWW), and 30 auxiliary nurse midwives (ANMs) and five focus group discussions among 28 government school teachers from the middle, high, and secondary standard.

Erratum to "Bleach enhancement of mixed wood pulp by mixture of thermo-alkali-stable xylanase and mannanase derived through co-culturing of Alkalophilic Bacillus sp. NG-27 and Bacillus nealsonii PN-11"[Heliyon 7 (1) (2021) e05673].

[This corrects the article DOI: 10.1016/j.heliyon.

Development and Validation of a Menstruation-Related Activity Restriction Questionnaire among Adolescent Girls in Urban Resettlement Colonies of Delhi.

Introduction: Menstruation, a physiological phenomenon, till date is associated with myths, taboos, and malpractices. These interfere with the emotional, physical, and mental health of adolescent girls. This study attempts to draft a validated questionnaire to measure menstruation-related activity restriction.

Bleach enhancement of mixed wood pulp by mixture of thermo-alkali-stable xylanase and mannanase derived through co-culturing of Alkalophilic sp. NG-27 and PN-11.

The Application of a combination of enzymes is the best alternative to reduce the use of chemicals in the paper industry. sp. NG-27 and PN-11 are known to produce thermoalkali stable xylanse (X) and mannanase (M) respectively having potential for pulp biobleaching.

Luminescent Conductive Columnar π-Gelators for Fe(II) Sensing and Bio-Imaging Applications.

The high demand and scarcity of luminescent, photoconductive, and transparent gels necessitate its finding as they are potential components in photonic devices such as solar cell concentrators where optical losses via scattering and reabsorption require to be minimized. In this direction, we have reported highly transparent, blue luminescent as well as photoconductive gels exhibiting the hole mobility of 10 cm/V s at ambient temperature as investigated by the time-of-flight technique. The -driven self-standing supergels were formed using triazole-modified phenylene-vinylene derivatives as gelators in a nonpolar solvent.

AIE-active mechanoluminescent discotic liquid crystals for applications in OLEDs and bio-imaging.

A multifunctional molecular design of fluorescent discotic liquid crystal (DLC) consisting of a tetraphenylethylene core is reported, which is found to serve as an excellent solid-state emitter in OLED devices with EQE of 4.4% and tunable mechanochromism. X-ray diffraction studies unveiled that change in supramolecular self-assembly is the physical origin of mechanochromism.

Comparison of fasting gastric volume using ultrasound in diabetic and non-diabetic patients in elective surgery: An observational study.

Background And Aims: Gastroparesis despite standard fasting in diabetic patients may increase the aspiration risk. This study aimed to compare fasting gastric volume (GV) of diabetic with non-diabetic patients scheduled for elective surgery using USG.

Methods: This prospective observational study included 53 diabetic and 50 non-diabetic patients aged >18 years, American Society of Anesthesiologists' physical status I-III having similar fasting intervals.

Parents' perception and factors affecting compliance with preoperative fasting instructions in children undergoing day care surgery: A prospective observational study.

Background And Aims: Fasting guidelines have been recommended in the paediatric population to minimise the risk of pulmonary aspiration. The present study was planned to assess the compliance with fasting instructions in children undergoing ambulatory surgery and identify the factors affecting it.

Methods: A total of 1,050 ASA I and II children aged 1-12 years, scheduled for day care surgery were enrolled.

High hole mobility in room temperature discotic liquid crystalline tetrathienoanthracenes.

Tetrathienoanthracene (TTA), a new discotic core fragment, is explored that shows a remarkably high hole mobility (μh) of 4.22 cm2 V-1 s-1 at room temperature when used in space-charge limited current (SCLC) devices. Strong co-facial interactions (π-π, SS) among TTA cores along with a high tendency of the derivative to align homeotropically in the columnar mesophase over a large area in SCLC cells contributed to the top-class charge carrier mobility.

Comparison of Two Supraglottic Airway Devices: I-gel Airway and ProSeal Laryngeal Mask Airway Following Digital Insertion in Nonparalyzed Anesthetized Patients.

Aims: The study is aimed to compare the efficacy of I-gel and ProSeal laryngeal mask airway (PLMA) in nonparalysed anesthetized individuals following manufacturer-recommended digital insertion.

Materials And Methods: In this prospective randomized observational study, 40 American Society of Anesthesiologists I and II patients, aged 18-65 years scheduled for elective surgical procedures were allocated either to PLMA group (Group P, = 20) or the I-gel group (Group I, = 20). Following digital insertion of PLMA or I-gel, the following parameters were compared: insertion time, ease of insertion, number of attempts, failed insertion, airway reaction during insertion, oropharyngeal leak (OPL) pressure, and gastric insufflation on auscultation.

Magnitude of domestic violence and its socio-demographic correlates among pregnant women in Delhi.

Context: Domestic violence is violation of basic human rights, and poses a threat to the physical, mental, and social health aspects of women and her children. The causation of domestic violence is precipitated by many risk factors.

Aims: Aim was to estimate the magnitude of domestic violence overall, and its sub-types, among pregnant women.

High Hole Mobility and Efficient Ambipolar Charge Transport in Heterocoronene-Based Ordered Columnar Discotics.

Heterocoronene, a new redox-active core fragment, is utilized for the synthesis of room-temperature columnar discotic liquid crystals (DLCs). Three wedge-shaped side chains having different lengths of alkyl tails are introduced at the periphery of the heterocoronene core to prepare three kinds of discotic molecules, (R = CH), (R = CH), and (R = CH). X-ray diffraction (XRD) analysis confirmed the packing variation in the columnar lattices regulated by alkyl chains of discrete length and steric bulk.

Evaluation of Arterial to End-tidal Carbon Dioxide Pressure Differences during Laparoscopic Renal Surgery in the Lateral Decubitus Position.

Background: End-tidal carbon dioxide (PEtCO) is a noninvasive reliable technique to measure arterial partial pressure of carbon dioxide (PaCO2) in the body under general anesthesia. However, gradient between PaCO and PEtCO (P[a-Et] CO) is influenced by many factors.

Aims: In the present study, we evaluated the changes in (a-Et) CO for laparoscopic donor nephrectomy in lateral decubitus position (LDP).