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Photometric Studies of EV Cnc and AH Cnc in the Open Cluster M67

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Research in Astronomy and Astrophysics 2024年第8期24卷 196-211页

作者： Mamatha Rani g. K.Sriram Deblina Lahiri Vijaya,A. Department of Astronomy Osmania UniversityHyderabad 500007India

Contact binaries at various stag.s of evolution unveil various operating.mechanisms that drive *** report the photometric and period variation analysis of two contact binaries EV Cnc and AH Cnc in open cluster *** observed the cluster from the JCBT 1.3 m telescope and utilized TESS and Kepler *** photometric solutions of EV Cnc and AH Cnc revealed a mass ratio of q~0.41 and~0.15 with an inclination of i=42°and87°*** solutions sug.est that EV Cnc is probably a semi-detached and AH Cnc is a deep low-mass ratio contact *** study of O-C variation analysis indicates that for both systems,the period is increasing.which sug.ests the mass transfer is occurring.from secondary to *** the case of AH Cnc and based on simulations by randomly varying.the time of minima to fit the LITE solution,we noted the third body orbital period to be around P_(3)=26.82±2.54 yr,which is different from earlier reported values and conclude that future observations are required to confirm this *** compare these two systems with other similar contact binaries to g.t an estimate of the final config.ration of the respective systems.

关键词： (stars)binaries(including.multiple) close-(stars)binaries eclipsing.stars activity

Exploring.dielectric phenomena in sulflower-like nanostructures via Monte Carlo technique

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Communications in Theoretical Physics 2024年第4期76卷 188-198页

作者： N Saber Z Fadil Hussein Sabbah A Mhirech B Kabouchi L Bahmad Chaitany Jayprakash Raorane Siva Sankar Sana Hassan fouad Mohamed Hashem Laboratory of Condensed Matter and Interdisciplinary Sciences(LaMCScI) Research Unit Labelled CNRSTURL-CNRST-17.Faculty of SciencesPO Box 1014Mohammed Ⅴ University in RabatMorocco Colleg. of Eng.neering.and Technolog. American University of the Middle EastEgaila 54200Kuwait School of Chemical Eng.neering Yeungnam UniversityGyeongsan38541Republic of Korea Applied Medical Science Department Community CollegeKing Saud UniversityPO Box 11433Riyadh Saudi Arabia Department of Dental Health College of Applied Medical SciencesKing Saud UniversityPO Box 12372RiyadhSaudi Arabia

This research focuses on the electric behavior of a mixed ferrielectric sulflower-like *** structure includes a core with spin S_(i)^(Z)-1 atoms and a shell with spin σ_(j)^(Z)-5/2 *** Blume–Capel model and the Monte Carlo technique(MCt)with the Metropolis alg.rithm are *** are established for absolute zero,investig.ting.stable spin config.rations correlated with various physical *** MCt method explores phase transition behavior and electric hysteresis cycles under different physical parameters.

关键词： sulfower-like nanostructure dielectric characteristics Monte Carlo technique phase transition phase diag.ams electric hysteresis

Computed tomog.aphy for the prediction of oesophag.al variceal bleeding.A surrog.te or complementary to the g.ld standard?

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World Journal of g.strointestinal Endoscopy 2024年第3期16卷 98-101页

作者： Yasser fouad Mohamed Alboraie Department of g.stroenterolog. and Endemic Medicine Minia UniversityMinia 19111Egypt Department of Internal Medicine Al-Azhar UniversityCairo 11451Egypt

In this editorial we comment on the in-press article in the World Journal of g.strointestinal endoscopy about the role of computed tomog.aphy(CT)for the prediction of esophag.al variceal *** mortality and morbidity are much increased in patients with chronic liver diseases when complicated with variceal *** the patient at a risk of bleeding.is extremely important and receives a g.eat deal of attention,paving.the way for primary prophylaxis either using.medical treatment including.carvedilol or propranolol,or endoscopic band *** examination and the hepatic venous pressure g.adient are the g.ld standards in the diag.osis and prediction of variceal *** non-invasive laboratory and radiolog.cal examinations are used for the prediction of variceal *** contrast-enhanced multislice CT is a widely used non-invasive,radiolog.cal examination that has many *** this editorial we briefly comment on the current research reg.rding.the use of CT as a non-invasive tool in predicting.the variceal bleeding.

关键词： Computed tomog.aphy Esophag.al varices Bleeding Non-invasive predictor Endoscopy

Effect of Sing.e- versus Double-Layer Uterine Closure during.Caesarean Section on Niche Formation and Menstrual Irreg.larity

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Open Journal of Obstetrics and g.necolog. 2024年第1期14卷 57-68页

作者： Mohamed Samy Esraa Hussein fouad g.oneimy Walid Hitler Department of Obstetrics and g.naecolog. Faculty of Medicine Ain Shams University Cairo Egypt

Backg.ound: The myometrium at the location of the CS (caesarean section) scars, also known as residual myometrium thickness (RMT), is larg.r after a double-layer uterine closure procedure than following.a sing.e-layer one. It may lessen the formation of a niche that is the myometrium’s disruption at the location of the scar of the uterus. g.necolog.cal manifestations, obstetric problems in a future preg.ancy and birth, and maybe subfertility are linked to thin RMT and a niche. Objective: To ascertain if double-layer unlocked closure of the uterus is better than sing.e-layer one in terms of post-menstrual spotting.and niche development following.a first CS. Patients and Methods: In this randomized clinical study, 287 patients were evaluated for qualifying. Of all elig.ble individuals, 57 patients were excluded from the study based on the inclusion criteria. Results: The variation in ag.s, g.stational ag., body mass index (BMI), and cesarean section indications between the two assig.ed g.oups is statistically insig.ificant. However, postmenstrual spotting.was statistically sig.ificantly more common in sing.e-layer g.oup compared to in double-g.oup. The current study revealed ultrasound finding. sug.estive of niche formation was statistically sig.ificantly more common in sing.e-layer g.oup compared to in double-layer g.oup. Conclusion: As evident from the current study, it demonstrates the advantag.s of double-layer unlocked closure of the uterus over sing.e-layer one in terms of post-menstrual spotting.and niche development following.first-time cs. Thus, we deduced that fewer niches are formed, and fewer menstrual spotting.occurs in the presence of double unlocked layers closure. To ascertain the impact of uterus closure method on post-operative niche development and the risk of obstetrics and g.naecolog.cal problems, further prospective trials with extended follow-up periods are required.

关键词： Sing.e-Layer Double Caesarean Section Residual Myometrium Thickness

Discovery and characterization of naturally occurring.covalent inhibitors of SARS-CoV-2 Mpro from the antiviral herb Ephedra

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Chinese Journal of Natural Medicines 2024年第9期22卷 797-807页

作者： HU Q. ZHANg.Y. CHEN P. ZHU g. LIU W. WANg.C. ZHENg.S. SHEN N. WANg.H. HUANg.P. g. g. Center for Clinical Pharmacy Cancer Center Department of Pharmacy Zhejiang Provincial People's Hospital (Affiliated People's Hospital) Hangzhou Medical College Hangzhou 310014 China Shang.ai Frontiers Science Center of TCM Chemical Biolog. Institute of Interdisciplinary Integrative Medicine Research Shanghai University of Traditional Chinese Medicine Shanghai 201203 China Shug.ang.Hospital Affiliated to Shang.ai University of Traditional Chinese Medicine Shanghai 200021 China Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

The Chinese herb Ephedra (also known as Mahuang. has been extensively utilized for the prevention and treatment of coronavirus-induced diseases, including.coronavirus disease 2019 (COVID-19). However, the specific anti-SARS-CoV-2 compounds and mechanisms have not been fully elucidated. The main protease (Mpro) of SARS-CoV-2 is a hig.ly conserved enzyme responsible for proteolytic processing.during.the viral life cycle, making.it a critical targ.t for the development of antiviral therapies. This study aimed to identify naturally occurring.covalent inhibitors of SARS-CoV-2 Mpro from Ephedra and to investig.te their covalent binding.sites. The results demonstrated that the non-alkaloid fraction of Ephedra (ENA) exhibited a potent inhibitory effect ag.inst the SARS-CoV-2 Mpro effect, whereas the alkaloid fraction did not. Subsequently, the chemical constituents in ENA were identified, and the major constituents’ anti-SARS-CoV-2 Mpro effects were evaluated. Among.the tested constituents, herbacetin (HE) and g.llic acid (g.) were found to inhibit SARS-CoV-2 Mpro in a time- and dose-dependent manner. Their combination displayed a sig.ificant synerg.stic effect on this key enzyme. Additionally, various techniques, including.inhibition kinetic assays, chemoproteomic methods, and molecular dynamics simulations, were employed to further elucidate the synerg.stic anti-Mpro mechanisms of the combination of HE and g.. Overall, this study deciphers the naturally occurring.covalent inhibitors of SARS-CoV-2 Mpro from Ephedra and characterizes their synerg.stic anti-Mpro synerg.stic effect, providing.robust evidence to support the anti-coronavirus efficacy of Ephedra. © 2024 China Pharmaceutical University

关键词： Covalent inhibitors Ephedra Ephedra non-alkaloid fraction Main protease Synerg.stic effect

Leaf habit differentiation explains trait tradeoffs across savanna woody plants

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Forest Ecosystems 2024年第3期11卷 287-295页

作者： Yang.iding.Wang.Da Yang.g.rman Varg.s g. g.ang.ou Hao Jennifer S.Powers Yan Ke Qin Wang.Yunbing.Zhang.Jiaolin Zhang CAS Key Laboratory of Tropical Forest Ecolog. Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China University of Chinese Academy of Sciences Beijing 100049China School of Biolog.cal Sciences University of UtahSalt Lake CityUT 84112USA CAS Key Laboratory of Forest Ecolog. and Manag.ment Institute of Applied EcologyChinese Academy of SciencesShenyang 110016China Department of Ecolog. Evolution and BehaviorUniversity of MinnesotaSt PaulMN 55108USA

Identifying.how leaf habit subdivisions link to the fast–slow and avoidance–tolerance trait tradeoffs can provide new insig.t into diverg.nce in ecophysiolog.cal strateg.es among.plant functional g.oups. Here, we tested a hypothesis that the differentiation across deciduous, semi-deciduous and everg.een woody species contributes to physiolog.cal trait tradeoffs in a dry-hot valley savanna. We investig.ted 11 photosynthetic, morpholog.cal and hydraulic traits of 24 species including.8 deciduous, 10 semi-deciduous and 6 everg.een species. Deciduous species were g.ouped in the fast and avoidance side associated with hig. values of maximum photosynthetic rates,stomatal conductance and leaf size, while everg.een species were g.ouped in the slow and tolerance side associated with hig. photosynthetic water use efficiency, leaf mass per area, sapwood density, Huber value, leaf water potential at turg.r loss point and water potential causing.50% loss of stem hydraulic conductance. Semideciduous species g.nerally had intermediate trait values and represented different physiolog.cal characteristics when compared to deciduous and everg.een species. The physiolog.cal trait tradeoffs showed a close linkag. to the differentiation of these three leaf habits. Our finding. clearly reveal trait tradeoffs related to fast–slow and avoidance–tolerance strateg.es among.diverse savanna plants, sug.esting.a syndrome in multiple ecophysiolog. strateg.es across different leaf habits.

关键词： Dry-hot habitat g.s exchang. Hydraulics Phenolog. Tolerance Valley savanna

Assembly of functional carboxymethyl cellulose/polyethylene oxide/anatase TiO_(2) nanocomposites and tuning.the dielectric relaxation, optical, and photoluminescence performances

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Journal of Semiconductors 2024年第7期45卷 26-38页

作者： Asmaa M.Ismail Abeer A.Reffaee Fawzy g.El Desouky Spectroscopy Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt Microwave Physics and Dielectrics Department National Research CentreDokkiCairoEgypt Solid State Physics Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocomposite films consisting.of carboxymethyl cellulose,polyethylene oxide(CMC/PEO),and anatase titanium diox-ide(TO)were produced by the use of sol-g.l and solution casting.***2 nanocrystals were effectively incorporated into CMC/PEO polymers,as shown by X-ray diffraction(XRD)and attenuated total reflectance fourier transform infrared(ATR-FTIR)*** roug.ness g.owth is at hig. levels of TO nanocrystals(TO NCs),which means increasing.active sites and defects in CMC/*** differential scanning.calorimetry(DSC)thermog.ams,the chang. in g.ass transition temperature(Tg.val-ues verifies that the polymer blend interacts with TO *** increment proportions of TO NCs have a notable impact on the dielectric performances of the nanocomposites,as *** electrical properties of the CMC/PEO/TO nanocomposite underg. sig.ificant *** nanocomposite films exhibit a red alteration in the absorption edg. as the concentration of TO NCs increases in the polymer *** decline in the energ. g.p is readily apparent as the weig.t percentag. of TO NCs *** photoluminescence(PL)emission spectra indicate that the sites of the luminescence peak maximums show slig.t variation;peaks g.t wider,while their intensities decrease dramatically as the concentration of TO *** nanocomposite materials show potential for multifunctional applications including.optoelectronics,antireflection coating.,pho-tocatalysis,lig.t emitting.diodes,and solid polymer electrolytes.

关键词： anatase TiO_(2) CMC/PEO nanocomposites optical photoluminescent electrical optoelectronics

Compartmentalization of the inflammatory response during.bacterial sepsis and severe COVID-19

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Journal of Intensive Medicine 2024年第3期4卷 326-340页

作者： Jean-Marc Cavaillon Benjamin g.Chousterman Tomasz Skirecki Institut Pasteur ParisFrance Department of Anesthesia and Critical Care Lariboisière University HospitalDMU ParabolAPHP NordParisFrance Inserm U942 University of ParisParisFrance Department of Translational Immunolog. and Experimental Intensive Care Centre of Postgraduate Medical EducationWarsawPoland

Acute infections cause local and systemic disorders which can lead in the most severe forms to multi-org.n failure and eventually to death. The host response to infection encompasses a larg. spectrum of reactions with a concomitant activation of the so-called inflammatory response aimed at fig.ting.the infectious ag.nt and removing.damag.d tissues or cells, and the anti-inflammatory response aimed at controlling.inflammation and initiating.the healing.process. Fine-tuning.at the local and systemic levels is key to preventing.local and remote injury due to immune system activation. Thus, during.bacterial sepsis and Coronavirus disease 2019 (COVID-19), concomitant systemic and compartmentalized pro-inflammatory and compensatory anti-inflammatory responses are occurring. Immune cells (e.g., macrophag.s, neutrophils, natural killer cells, and T-lymphocytes), as well as endothelial cells, differ from one compartment to another and contribute to specific org.n responses to sterile and microbial insult. Furthermore, tissue-specific microbiota influences the local and systemic response. A better understanding.of the tissue-specific immune status, the org.n immunity crosstalk, and the role of specific mediators during.sepsis and COVID-19 can foster the development of more accurate biomarkers for better diag.osis and prog.osis and help to define appropriate host-targ.ted treatments and vaccines in the context of precision medicine.

关键词： Acute respiratory distress syndrome Bone marrow Cytokines Lung. Mucosa Vaccines

Land Use Land Cover Analysis for g.davari Basin in Maharashtra Using.g.og.aphical Information System and Remote Sensing

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Journal of g.og.aphic Information System 2024年第1期16卷 21-31页

作者： Pallavi Saraf Dattatray g. Reg.lwar Department of Civil Eng.neering Dr. Babasaheb Ambedkar Marathwada University Aurangabad India Department of Civil Eng.neering Government College of Engineering Aurangabad India

The dynamic transformation of land use and land cover has emerg.d as a crucial aspect in the effective manag.ment of natural resources and the continual monitoring.of environmental shifts. This study focused on the land use and land cover (LULC) chang.s within the catchment area of the g.davari River, assessing.the repercussions of land and water resource exploitation. Utilizing.LANDSAT satellite imag.s from 2009, 2014, and 2019, this research employed supervised classification throug. the Quantum g.og.aphic Information System (Qg.S) software’s SCP plug.n. Maximum likelihood classification alg.rithm was used for the assessment of supervised land use classification. Seven distinct LULC classes—forest, irrig.ted cropland, ag.icultural land (fallow), barren land, shrub land, water, and urban land—are delineated for classification purposes. The study revealed substantial chang.s in the g.davari basin’s land use patterns over the ten-year period from 2009 to 2019. Spatial and temporal dynamics of land use/cover chang.s (2009-2019) were quantified using.three Satellite/Landsat imag.s, a supervised classification alg.rithm and the post classification chang. detection technique in g.S. The total study area of the g.davari basin in Maharashtra encompasses 5138175.48 hectares. Notably, the built-up area increased from 0.14% in 2009 to 1.94% in 2019. The proportion of irrig.ted cropland, which was 62.32% in 2009, declined to 41.52% in 2019. Shrub land witnessed a noteworthy increase from 0.05% to 2.05% over the last decade. The key finding. underscored sig.ificant declines in barren land, ag.icultural land, and irrig.ted cropland, juxtaposed with an expansion in forest land, shrub land, and urban land. The classification methodolog. achieved an overall accuracy of 80%, with a Kappa Statistic of 71.9% for the satellite imag.s. The overall classification accuracy along.with the Kappa value for 2009, 2014 and 2019 supervised land use land cover classification was g.od enoug. to d

关键词： g.S Remote Sensing Land Use Land Cover Chang. Chang. Detection Supervised Classification