bluuebunny/crossref_metadata_2025_split huggingface dataset:
Admissible Inversion on Γ1 Non-Deranged Permutations
Authors: Magami M. S. , Ibrahim M. 
Published: October 2021

Some further theoretic properties of scheme called Γ1 non deranged permutations, the permutation which fixes the first element in the permutations were identified and studied in relation to admissible inversion in this paper. This was done first through some computation on this scheme using prime number p ≥ 5, the admissible inversion descent aid (ωp-1) is equi-distributed with descent number des (ωp-1) and also showed that the admissible inversion set Ai (ωi ) and admissible inversion set Ai (ωp-i ) are disjoint.
Phytochemical and Potential Pharmacological Properties of Pavetta indica Linn
Authors: Perera Shishanthi Anuradha , Samaranada Vimukthi Asahara , Wijekumar Praba Jalini , Hemasinghe Imesha Hansani Nayanathara , Ranasinghe Kaveesha Dulangi , Marasinghe Piyal 
Published: October 2021

Background: Pavetta indica Linn is a medicinal plant that belongs to the family of Rubiaceae. The parts of this plant are used in indigenous clinical practices, especially for treating visceral obstruction, haemorrhoidal pains, rheumatism and eye diseases, and in the preferential treatment of liver disease, pain from piles, urinary infections, and fever. Despite its usage in indigenous clinical practices, there is limited available information on comparative pharmacognostic, physicochemical, phytochemical, ethnopharmacological data and antioxidant capacity of this herb.
Aim: To review and summarize the medicinal properties of Pavetta indica Linn after critically evaluating the published studies reporting and to identify potential research areas from the existing data.
Methodology: In the first phase, a comprehensive literature search was carried out in several databases under the PRISMA (Preferred Reporting Project for Systematic Reviews and Meta-Analysis) guidelines.
Results: The plant reported various classes of bioactive compounds with the main components: carbohydrates, glycosides, alkaloids, phytosterols, saponins, tannins, proteins and amino acids, phenolic and flavonoids. Extracts of this plant possess multiple pharmacological activities such as hepatoprotective, anti-inflammatory, antioxidant, antidiabetic, neuroprotective and wound healing factors, anti-dementia, anti-cancer, antimicrobial, antihelminthic and diuretic properties.
Conclusion: This review gives vital information on the traditional uses and, on the other hand, modern discoveries such as phytochemistry and pharmacology of Pavetta indica Linn. The therapeutic value of the plant was discovered based on the information gathered during the review process. As a result, greater research on this plant should be encouraged to identify new useful drugs and therapeutic effects and test using clinical studies.
Photovoltaic (PV) Model Evaluation with Maximum Power Point Tracking (MPPT)
Authors: Areola R. I. , Oyediji F. T. , Olajuyin E. A. 
Published: October 2021

The use of solar energy is widespread due to increase in its demand across the world. This is because this form of energy can supply steady, stable, regular and clean energy. Evaluation of PV (photovoltaic) model with maximum power point tracking (MPPT) using matlab/simulink cell model for estimating the I-V characteristic curves of photovoltaic panel with respect to changes on environmental parameters (temperature and irradiance) and cell parameters (parasitic resistance and ideality factor) were evaluated. The PV model equations were modelled and simulated using MATLAB/SIMULINK Approach. This paper confirmed the usefulness of MATLAB/SIMULINK in the development of MPPT (maximum power point tracking) algorithm. Using a Shockley diode equation, an accurate simulink PV panel model was developed. It was concluded that the MPPT is able to achieve maximum power output when there is variation in solar irradiance.
Effectiveness on Simulation Teaching Regarding Cardio Pulmonary Resuscitation among Workers of State Transport Depot
Authors: Alwadkar Sagar , Mendhe Deeplata 
Published: October 2021

Introduction: Cardiopulmonary resuscitation is the technique of life-saving procedure in that artificial ventilation uses external chest compressions to maintain circulation flow of the heart and oxygenation during cardiac arrest. Many peoples in the developed and developing countries have taken known education of Cardiopulmonary resuscitation training which was launched jointly by Universal Medical Assistance International Center.
Objectives: 1. To evaluate the previous knowledge and skill regarding CPR among workers of ST Depot. 2. To evaluate effectiveness and correlation the post-test knowledge and skill score regarding CPR among workers of ST Depot. 3. To identify the association with the post-test skill score regarding CPR among workers of ST Depot.
Methodology: In this study, will the effectiveness of simulation teaching regarding cardiopulmonary resuscitation the sample will be the 100 ST depot workers. The workers will select according to inclusion and exclusion criteria as well as the Purposive sampling technique. One group pre-test and post-test design. It will be conducted at State Transport Depot. Wardha Maharashtra, India respectively. The data will be collected by using questionnaires and an observational checklist for simulation teaching on cardiopulmonary resuscitation.
Conclusion: It is concluded that the effectiveness of simulation teaching on CPR was found to be effective in improving the knowledge and skill of workers of ST depot.
Dental Management in the Immunocompromised Children: A Review
Authors: Habash Abdulrahman Kamal , Basoudan Firas Walid , Alwayel Hassan Adnan , Alarfaj Bassam Walid , Alwayel Ali Naji , Alaithan Jafar Ali , Alzuhiri Mushary abdullah , Alduraye Ghada Sami 
Published: October 2021

Oral manifestations of oropharyngeal infections in immunocompromised individuals pose a unique challenge for medical and dental specialists, as clinical signs and symptoms could be minor, making correct diagnosis and treatment difficult. Effective infection control and oral symptom management are critical, and they can be done by the careful use of topical and systemic medicines, as well as proper oral hygiene. According to current guidelines, children should receive an oral examination before starting cancer treatment. Before the commencement of cancer treatment–related oral issues, a pretreatment examination helps develop a dentist-child relationship. Intensive mouth care is critical because it reduces the chance of developing moderate/severe mucositis while also reducing the risk of septicemia and oral infections. Almost all of the therapy's oral side effects are caused by stomatotoxicity, either direct or indirect. The purpose of therapy for this patient group is to keep the oral mucosa healthy, avoid secondary infection, relieve pain, and maintain nutritional intake. In this narrative review we will be looking at evaluation, prevention and management of dental complications in immunosuppressed children.
Bacteriological Profile and Antibiotic Resistance Pattern at the Yaounde University Teaching Hospital: A Retrospective Study
Authors: Yopa Daniele Sandra , Kamga Hortense Gonsu , Nga Emmanuel Nnanga , Njikeu Olive Nathalie Kouamen , Ohandza Claude Stephan , Nguefack-Tsague Georges 
Published: October 2021

Aims: Over the decades, antibiotic resistance has become a cross-border public health problem. This calls for the profiling of microorganisms, particularly bacteria implicated in antibiotic resistance, in order to improve clinical practice and reduce the incidence of therapeutic failure in the treatment of infectious diseases.
Study Design: We conducted a retrospective cross-sectional study.
Place and Duration of the Study: The study was made at the bacteriology laboratory at the Yaounde University Teaching Hospital, Cameroon during the period between January 2016 and June 2021.
Methodology: All bacterial strains from the following biological fluids were included: blood, stool, urine, suppurations, probe tip and catheter tip. The antibiotic susceptibility of isolates was collected from the registers of the said laboratory. The data were encoded in Censuses and Survey Procession Software (CSPro) version 7.3 and analysed using the Statistical Package for Social Science (SPSS) version 25. Graphs and figures were made using Excel 2016 spreadsheet software.
Results: A total of 1071 bacteria were enrolled in 955 patients. The age group most represented was 0-5 years (34.6%). Most of the isolates came from a blood sample. Among the isolates, Coagulase-negative Staphylococci (18.5%), Escherichia coli (17.7%), Staphylococcus aureus (14%) and Klebsiella pneumoniae (11.2%) were the most common. A total of 1071 bacteria were enrolled in 955 patients. The age group most represented was 0-5 years (34.6%). Most of the isolates came from a blood sample. Among the isolates, Coagulase-negative Staphylococci (18.5%), Escherichia coli (17.7%), Staphylococcus aureus (14%) and Klebsiella pneumoniae (11.2%) were the most represented. Between 2016 and 2020, almost remarkable resistance was observed to the class of penicillins (78% to 83%), cephalosporins (44% to 61%) and quinolones (43% to 100%) for Escherichia coli. For Staphylococcus aureus, resistance changes range from 68% to 77% for the penicillin class. Klebsiella pneumoniae showed an evolution ranging from 11% to 19% for aminosides.
Conclusion: Although not all isolates showed a change in the level of resistance to all antibiotics that are frequently used in our study population, Nevertheless, it is important for national public health actors to establish active surveillance of antibiotic and even antimicrobial resistance and to implement a guide to the proper use of antibiotics for health professionals, and the community.
A Universal Nonhalogenated Polymer Donor for High‐Performance Organic Photovoltaic Cells
Authors: Zhang Tao , An Cunbin , Cui Yong , Zhang Jianqi , Bi Pengqing , Yang Chenyi , Zhang Shaoqing , Hou Jianhui 
Published: October 2021

AbstractNonhalogenated polymers have great potential in the commercialization of organic photovoltaic (OPV) cells due to their advantage in low‐cost preparation. However, non‐halogenated polymers usually have high highest occupied molecular orbital (HOMO) energy levels and inferior self‐aggregation properties in solution, thus resulting in low power conversion efficiencies (PCEs). Herein, two nonhalogenated polymers, PB1 and PB2, are prepared. When the polymers are used to fabricate OPV cells with BTP‐eC9, the PB1‐based device only gives a PCE of 5.3%, while the PB2‐based device shows an outstanding PCE of 17.7%. After the introduction of PBDB‐TF as the third component, the PB2:PBDB‐TF:BTP‐eC9‐based device with an optimal weight ratio of 0.5:0.5:1 achieves a PCE up to 18.4%. More importantly, PB2 exhibits good compatibility with various nonfullerene acceptors to achieve better PCEs than those of classical polymer (PBDB‐T and PBDB‐TF)‐based devices. When PB2 is combined with a wide‐bandgap electron acceptor (F‐BTA3), this device shows excellent PCE of 27.1% and 24.6% for 1 and 10 cm2 devices, respectively, under light intensity of 1000 lux light‐emitting diode illumination. These results provide new insight in the rational design of novel nonhalogenated polymer donors for further development of low‐cost materials and broadening the application of OPV cells.
E‐Skin Piezoresistive Pressure Sensor Combining Laser Engraving and Shrinking Polymeric Films for Health Monitoring Applications
Authors: dos Santos Andreia , Fortunato Elvira , Martins Rodrigo , Águas Hugo , Igreja Rui 
Published: October 2021

AbstractElectronic‐skin (e‐skin) is pursued, as of the 21st century, to mimic the sensory capabilities of human skin for several applications. Pressure is one of the key stimuli in e‐skin technology, frequently detected using piezoresistive sensors, which consist of film layers commonly micro‐structured to improve their performance, either through expensive photolithography techniques or other poorly customizable approaches. The authors’ group recently introduced laser engraving as a low‐cost yet highly customizable micro‐structuring technique to produce molds, despite the limited resolution. Combining laser engraving with shrinking polymeric films (SPFs) to fabricate molds is an innovative strategy to greatly improve the performance of the sensors, allowing for thinner and highly conformal sensor layers while minimizing costs. Shrinking these SPFs after their engraving yields smaller yet high aspect ratio cavities. Herein, all the laser engraving parameters are thoroughly investigated to optimize SPF molds (arrays of 10 µm vertical lines spaced by 200 µm, engraved with 3% laser power, 25% speed, and 0.04'’ between laser and substrate) to produce e‐skin piezoresistive sensors with a sensitivity of −1.4 kPa−1 below 10 kPa, a 1.4 ms recovery time, and a capability to detect distinct body movements, illustrating the great potential for health monitoring applications.
Direct Atomic Layer Deposition of Ultrathin Aluminum Oxide on Monolayer MoS2 Exfoliated on Gold: The Role of the Substrate
Authors: Schilirò Emanuela , Nigro Raffaella Lo , Panasci Salvatore E. , Agnello Simonpietro , Cannas Marco , Gelardi Franco M. , Roccaforte Fabrizio , Giannazzo Filippo 
Published: October 2021

AbstractIn this paper, the authors demonstrate the atomic layer deposition (ALD) of highly homogeneous and ultrathin (≈3.6 nm) Al2O3 films with very good insulating properties (breakdown field of ≈10–12 MV cm−1) directly onto monolayer (1L) MoS2 exfoliated on gold. Differently than in the case of 1L MoS2 supported by a common insulating substrate (Al2O3/Si), a better nucleation process of the high‐k film is observed on the 1L MoS2/Au system since the ALD early stages. Atomic force microscopy analyses show a ≈50% Al2O3 surface coverage just after 10 ALD cycles, its increase to >90% (after 40 cycles), and a uniform ≈3.6 nm film (after 80 cycles). The Al2O3 density on bilayer MoS2 is found to be significantly reduced with respect to 1L MoS2/Au, suggesting a role of screened interface charges with the metal substrate on the adsorption of ALD precursors. Finally, Raman and photoluminescence spectroscopy show a p‐type doping and tensile strain of 1L MoS2 induced by the Au substrate, providing an insight on the evolution of vibrational and optical properties after the Al2O3 deposition. The direct ALD growth of Al2O3 on large‐area 1L MoS2 induced by the Au underlayer can be of wide interest for electronic applications.
Stretchable Broadband Plasmonic Photodetector Based on a Hybrid and Composite of Metal Nanoparticles and Organic Semiconductor
Authors: Trung Tran Quang , Dang Vinh Quang , Lee Nae‐Eung 
Published: October 2021

AbstractThe development of stretchable broadband photodetectors for applications in wearable optoelectronics and personal healthcare still has some limitations in obtaining materials, designing device structures, and developing reliable fabrication processes. Here, stretchable broadband plasmonic photodetectors (SBPPDs) by fabricating plasmonic photodetectors on a stress‐adaptable modulated polydimethylsiloxane (PDMS) substrate are proposed. The plasmonic photodetectors are developed via two approaches for the sensing layers: (i) hybrid of silver nanoparticles (AgNPs) with poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and (ii) nanocomposite of AgNPs embedded into PEDOT:PSS. These sensing layers are directly formed on the substrate to be capable of sustaining tensile strain. The working principle of SBPPDs is based on the injection of hot‐carriers generated from surface plasmon decay on AgNPs to PEDOT:PSS under visible (Vis) and near‐infrared (NIR) illumination. Both SBPPDs show high responsivity to wavelengths of Vis (565 nm), Vis (660 nm), NIR (880 nm), and NIR (970 nm) as well as reliable electrical performance under applied stretching up to 30%. The proposed SBPPDs are promising for future stretchable wearable optoelectronics.
Black Phosphorus for Directed Molecular Assembly with Weak Electronic Coupling
Authors: Bouatou Mehdi , Harsh Rishav , Chacon Cyril , Girard Yann , Repain Vincent , Bellec Amandine , Rousset Sylvie , Smogunov Alexander , Dappe Yannick J. , Lagoute Jérôme 
Published: October 2021

AbstractThe combination of 2D materials with organic molecules offer the possibility to obtain low dimensional hybrid materials with tailored properties. Black phosphorus is a monoelemental semiconducting material with a nonplanar puckered atomic structure. Here, porphyrin molecules on black phosphorus are studied and it is shown that they self‐assemble with an epitaxial relationship indicating that the molecule‐surface interaction largely dominates the molecule–molecule interaction. The atomic structure of black phosphorus is found to be at the origin of the substrate driven self‐assembly. Despite this strong interaction with molecules, the electronic coupling is found to be weak allowing the molecules to maintain the properties of their gas phase, which is the usual behavior for van der Waals materials. Therefore, the combination of the peculiar puckered structure with the van der Waals nature of black phosphorus provides this material with the ability to interact strongly enough with adsorbed molecules to drive their assembly but weakly enough to keep their electronic properties intact.
Visible and Online Detection of Near‐Infrared Optical Vortices via Nonlinear Photonic Crystals
Authors: Liu Yuan , Chen Wei , Zhang Wang , Ma Chao‐Qun , Chen Huai‐Xi , Xiong Yi‐Feng , Yuan Rui , Tang Jie , Chen Peng , Hu Wei , Xu Fei , Lu Yan‐Qing 
Published: October 2021

AbstractNear‐infrared (NIR) optical vortices (OVs), which carry specific orbital angular momentum, are believed to greatly increase the capacity of conventional optical communication systems. However, due to the equipment limits in invisible wavelengths, NIR OVs detection remains a great difficulty. Here, the up‐conversion imaging technology is exploited to circumvent using NIR detectors. A lithium niobate crystal with its quadratic susceptibility modulated by a specially designed Dammann vortex grating is fabricated to realize the frequency conversion—from NIR to the visible region—while converting multiplexed OVs to Gaussian modes in specific multichannels. During the detection process, the most of energies of the detected OVs are preserved, which can be considered as online detection. Additionally, at least 400 nm applicable wavelength range of this method is experimentally demonstrated, as well as up to 25 independent detection channels. Compared with existing solutions, this scheme enables a large‐broadband wavelength, low energy loss, and multiprocessing channels platform for visible detection of NIR OVs, showing great potential to be applied in optical communication systems.
Transannulation of Pyridotriazoles with Naphthoquinones and Indoles: Synthesis of Benzo[f]Pyrido[1,2‐a]Indoles and Indolizino[3,2‐b]indoles
Authors: Rawat Deepa , Adimurthy Subbarayappa 
Published: October 2021

AbstractRuthenium catalysed denitrogenative transannulation of pyridotriazoles with naphthoquinones provided the transannulated benzo[f]pyrido[1,2‐a]indoles derivatives in good to excellent yields. While pyridotriazoles with indoles in presence of PivOH and oxone yield indolizino[3,2‐b]indoles under metal‐free conditions. Quinone annulation proceeds through ruthenium‐carbenoid intermediate while indole annulation may proceed via a diazo‐pyridinium intermediate. Control experiments suggest that both the transformations follow the ionic mechanism.magnified image
Diffusion coefficient analysis method using data statistical processing to reduce interference fringe noise effects
Authors: Tominaga Kohji , Orikasa Isamu , Tomaru Momoko , Osada Takuma , Hashimoto Yoshitaka , Inatomi Yuko , Suzuki Shinsuke 
Published: October 2021

AbstractWe proposed a simple statistical analysis method of minute concentration changes for measuring diffusion coefficient with reduced interference fringe noise effect. In the “Soret‐Facet Mission,” the one‐dimensional diffusion equation discretized by the finite difference method was applied for temporal homogenization processes of the minute concentration gradient induced by the Soret effect with random noises. Measured diffusion coefficient Dexp was determined by evaluating the obtained apparent diffusion coefficient distributions D. The measured value Dexp obtained by the proposed processes was found to be valid because the measured value Dexp was close to the theoretical one Dth calculated by the Darken equation and the reference one Dref calculated in” Facet Mission” in the same solution system, respectively. In addition, by analyzing about 1/16th of the total field of view, it was possible to obtain a diffusion coefficient that are more than 95% convergent for the measured value Dexp obtained from the full field of view analysis.
High‐yield production of p‐diethynylbenzene through consecutive bromination/dehydrobromination in a microreactor system
Authors: Yang Zhirong , Yang Yue , Zhang Xuefeng , Du Wei , Zhang Jing , Qian Gang , Duan Xuezhi , Zhou Xinggui 
Published: October 2021

AbstractPolyarylacetylene resins have received great attention due to their outstanding heat resistance, while the absence of an efficient method to produce their monomer, p‐diethynylbenzene (p‐DEB), has discouraged their commercial development. Industrial production of p‐DEB consists of bromination and dehydrobromination in a semi‐batch reactor, state of the art yield from which is only 70%–75%. Herein, a combined effort of byproduct characterization and density functional theory calculations revealed that side reactions mainly consisted of aromatic substitution which would be promoted by thermal runaway derived from exothermic bromination due to higher activation energy of side reactions. From these considerations, we developed a microreactor system to enhance heat transfer thereby mitigating byproduct formation, from which a p‐DEB yield of 99.2% could be achieved. Moreover, the high heat removal efficiency avoided the use of slow feeding and reactant dilution required in semi‐batch operation, thereby shortening the reaction time to 14 s while generating more concentrated product.
Efficacy and safety of ferric carboxymaltose infusion in reducing anemia in patients receiving chemotherapy for nonmyeloid malignancies: A randomized, placebo‐controlled study (IRON‐CLAD)
Authors: Makharadze Tamta , Boccia Ralph , Krupa Anna , Blackman Nicole , Henry David H. , Gilreath Jeffrey A. 
Published: October 2021

AbstractErythropoiesis‐stimulating agents (ESA) are effective for chemotherapy‐induced anemia (CIA) but associated with serious adverse events. Safer alternatives would be beneficial in this population. The efficacy and safety of ferric carboxymaltose (FCM) as monotherapy for CIA was evaluated. This Phase 3, 18‐week, double‐blind, placebo‐controlled study randomized adults with ≥ 4 weeks of chemotherapy remaining for treatment of nonmyeloid malignancies with CIA to FCM (two 15 mg/kg infusions 7 days apart; maximum dose, 750 mg single/1500 mg total) or placebo. The primary efficacy endpoint was percentage of patients with decreases in hemoglobin (Hb) ≥ 0.5 g/dL from weeks 3 to 18; the key secondary efficacy endpoint was change in Hb from baseline to week 18. Inclusion criteria included: (Hb) 8–11 g/dL, ferritin 100–800 ng/mL, and transferrin saturation (TSAT) ≤35%. In 244 patients (n = 122, both groups), the percent of patients who maintained Hb within 0.5 g/dL of baseline from weeks 3 to 18 was significantly higher with FCM versus placebo (50.8% vs. 35.3%; p = 0.01). Mean change in Hb from baseline to week 18 was similar between FCM and placebo (1.04 vs. 0.87 g/dL) but significantly greater with FCM with baseline Hb ≤ 9.9 g/dL (1.08 vs. 0.42 g/dL; p = 0.01). The percent with ≥ 1 g/dL increase from baseline was significantly higher with FCM versus placebo (71% vs. 54%; p = 0.01), occurring in a median 43 versus 85 days (p = 0.001). Common adverse events in the FCM arm included neutropenia (17%), hypophosphatemia (16%), and fatigue (15%). FCM monotherapy effectively maintained Hb and was well tolerated in CIA.