6,764 results match your criteria: "Armenia; Russian-Armenian Slavonic University[Affiliation]"

Article Synopsis
  • The CMS experiment conducted a search for charge-parity violation in decays using proton-proton collision data from 2018, analyzing around 10 billion events with b hadrons decaying into charm hadrons.
  • The flavor of the neutral D meson was determined through the charge of pions in the reconstructed decays, and an asymmetry measurement in the decays was reported, taking into account various uncertainties.
  • This research marks the first asymmetry measurement by the CMS in the charm sector and the first to use a fully hadronic final state in such analyses.
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  • Spinal hydatid disease is a rare condition, occurring in only 0.2-1% of cases, mainly in regions where it is common, and should be considered in spinal cord compression diagnoses.
  • The case involved a 52-year-old man with symptoms like lower extremity pain, trouble urinating, and back issues, who was treated with antiparasitic therapy and underwent two surgeries with no bacteria found post-treatment.
  • Early detection and proper treatment are essential due to the rarity of the disease, emphasizing its importance in differential diagnosis for spinal issues.
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New data on the Palaearctic subgenus Holoclera Schiner of dance flies of the genus Rhamphomyia Meigen (Diptera: Empididae) are reported. Three new species are described: Rhamphomyia (Holoclera) richterae sp. nov.

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  • The paper introduces a checklist of bark and ambrosia beetles found in Armenia, identifying a total of 74 species from the Platypodinae and Scolytinae subfamilies.
  • Four species are highlighted as newly recorded in Armenia, including Lymantor coryli and Ips typographus.
  • Additionally, the study provides records for 61 other beetle species that were not previously listed in recent Catalogues of Palaearctic Curculionoidea.
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The new aphid species Metopeurum caucasicum sp. nov. living on Achillea millefolium and five species of Tanacetum, namely T.

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Does coiling of the proximal end of the ureteral stent affect stent-related symptoms?

World J Urol

December 2024

EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, Arnhem, NL-6803, The Netherlands.

Objective: To evaluate the impact of coiling of the proximal end of the ureteral stent on stent-related symptoms (SRS) in in subgroup of patients undergoing preoperative ureteral stenting preceding flexible retrograde intrarenal surgery (RIRS).

Materials And Methods: We performed a prospective comparative study including patients undergoing stent placement 7-10 days prior to RIRS. Patients were divided into 2 groups; in Group 1 coiling of proximal end of the DJ was present, while in Group 2 coiling was absent.

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Article Synopsis
  • Measuring deeply virtual Compton scattering (DVCS) on the neutron is essential for understanding the nucleon's structure through generalized parton distributions (GPDs).
  • Neutron targets help complement data obtained from polarized protons, particularly in determining the poorly understood GPD E, which is crucial for analyzing quark contributions to nucleon spin.
  • The experiment utilized a longitudinally polarized electron beam at Jefferson Lab and the CLAS12 detector to measure DVCS on the neutron for the first time, providing new insights into quark-flavor separation of relevant Compton form factors.
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Recessive dystrophic epidermolysis bullosa (RDEB) is a rare and most often severe genodermatosis characterized by recurrent blistering and erosions of the skin and mucous membranes after minor trauma, leading to major local and systemic complications. RDEB is caused by loss-of-function mutations in COL7A1 encoding type VII collagen (C7), the main component of anchoring fibrils which form attachment structures stabilizing the cutaneous basement membrane zone. Most of the previously reported COL7A1 mutations are located in the coding or intronic regions.

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Furopyridine Derivatives as Potent Inhibitors of the Wild Type, L858R/T790M, and L858R/T790M/C797S EGFR.

J Phys Chem B

December 2024

Center of Excellence in Biocatalyst and Sustainable Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.

The treatment of patients with nonsmall cell lung cancer (NSCLC) using epidermal growth factor receptor (EGFR) inhibitors is complicated by drug-sensitive activating L858R/T790M and L858R/T790M/C797S mutations. To overcome drug resistance, a series of furopyridine (PD) compounds were virtually screened to identify potent EGFR inhibitors using molecular docking and molecular dynamics (MD) simulations based on the solvated interaction energy (SIE) method. Several PD compounds identified from virtual screening demonstrated the potential to suppress both wild-type and mutant forms of EGFR, with IC values in the nanomolar range.

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Efficacy of Oral Rehabilitation Techniques in Patients With Oral Cancer: A Systematic Review and Meta-Analysis.

J Surg Oncol

December 2024

Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.

Article Synopsis
  • Oral cancer can impact various parts of the mouth, and oral rehabilitation aims to restore function, appearance, and well-being for patients post-diagnosis.
  • A study reviewed existing research to evaluate the functional outcomes and quality of life in patients who underwent rehabilitation after oral cancer treatment, focusing on the effect of treatment methods, like maxillectomy and radiotherapy, on these outcomes.
  • Findings indicate that oral rehabilitation plays a vital role in improving the quality of life for oral cancer patients, suggesting it should be an essential part of treatment plans to support recovery and overall health.
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Background: Heart failure (HF) is often accompanied by atrial fibrillation (AF), which significantly worsens the outcome of both diseases. Half of individuals with HF has AF, and HF occurs in more than one-third of individuals with AF. Thus, HF and AF are commonly encountered together and are closely interrelated with similar risk factors.

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Guillain-Barré Syndrome in Africa: Understanding, Addressing, and Empowering.

Health Sci Rep

December 2024

Department of Research and Education Oli Health Magazine Organization, Research and Education Kigali Rwanda.

Introduction: Guillain-Barré Syndrome (GBS) is a spectrum of peripheral neuropathies characterized by rapid symmetrical limb weakness and sensory symptoms. GBS can be life-threatening and requires intensive care, particularly for patients with imminent respiratory failure. In Africa, limited research and high therapy costs pose challenges.

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A systematic review of the clinicopathological characteristics of oral leiomyomatous hamartoma.

World J Surg Oncol

December 2024

Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600 077, India.

Article Synopsis
  • Oral leiomyomatous hamartoma (OLH) is a benign overgrowth of smooth muscle tissue that can occur in various locations in the oral cavity.
  • The systematic review analyzed 55 studies involving 66 subjects, revealing that OLH lesions typically presented firm consistency, average size of 1.20 cm, and were often found on the tongue or maxilla, with surgical excision being the primary treatment method.
  • Despite its rarity, OLH is important for differential diagnosis in young patients with oral lesions, given its distinct clinicopathological features identified in the reviewed literature.
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Growth characteristics, redox potential changes and proton motive force generation in K1 during growth on various carbon sources.

AIMS Microbiol

November 2024

Department of Biochemistry, Microbiology and Biotechnology, Faculty of Biology, Yerevan State University, 0025 Yerevan, Armenia.

Article Synopsis
  • The K1 strain of an extremophile microorganism primarily uses aerobic metabolism, with some strains able to grow anaerobically depending on the carbon sources available.
  • Experiments showed that the strain's growth was affected by the concentration and pH of carbon sources, notably that high glucose concentrations hindered growth while other sugars did not.
  • The study discovered that K1's bioenergetic properties, including membrane potential and proton motive force, vary with different carbon sources and acidic conditions, revealing potential for biotechnological applications.
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Objectives: This study aimed to compare mental healthcare services for older adults aged ≥65 years among countries in World Psychiatric Association (WPA) Zone 10.

Methods: A culturally sensitive questionnaire was developed and sent to the presidents of national psychiatric associations of the eight countries in WPA Zone 10 (Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, and Uzbekistan).

Results: Psychiatric associations of six countries responded to the questionnaire (Armenia and Moldova did not respond).

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A synthesis of new enantiomerically enriched derivatives of (S)-α-aminopropionic acid, containing in the β-position 1,2,3-triazole groups coupled with a o-, m- and p-substituted phenyl residue, was developed based on Cu(I) catalyzed [3 + 2] cycloaddition of azides with alkynes. As the starting materials was used the square-planar Ni(II)complex of the Schiff base of propargylglycine with the chiral auxiliary BPB (Benzylprolylbenzophenone) and 1,4-substituted phenyl azides. The assignment of the (S)-absolute configuration of the α-carbon atom of the amino acid residue of the main diastereomeric complexes of the cycloaddition products was carried out on the basis of positive Cotton effects in the region of 480-580 nm of the circular dichroism spectra.

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Article Synopsis
  • The study focuses on detecting multijet signatures from proton-proton collisions at a high energy of 13 TeV, analyzing a dataset totaling 128 fb^{-1}.
  • A special data scouting method is utilized to pick out events with low combined momentum in jets.
  • This research is pioneering in its investigation of electroweak particle production in R-parity violating supersymmetric models, particularly examining hadronically decaying mass-degenerate higgsinos, and it broadens the limits on the existence of R-parity violating top squarks and gluinos.
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By leveraging the Okada model, the study makes the first-ever attempt to examine earthquake-induced tsunamis in Lake Sevan, related to the activation of underwater segments of the active Pambak-Sevan-Syunik Fault (PSSF), the largest geological structure in the Republic of Armenia (RA). Situated in the Arabian-Eurasian continental collision zone, the basin of Sevan, the largest freshwater lake in the Caucasus region, is characterized by a variety of geological hazards capable of producing events of inter-related triggering. Among other threats, the lake tsunami hazard has remained unexplored.

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Diversity and Distribution of Bacterial and Parasitic Tick-Borne Pathogens in Armenia, Transcaucasia.

Iran J Public Health

November 2024

UMR BIPAR, INRAE, Anses, Ecole Nationale Vétérinaire d'Alfort, Laboratory of Animal Health, Maisons-Alfort Cedex, France.

Background: Variations in the distribution and prevalence of pathogens in ticks can have significant consequences for human health. Information on these variables in Transcaucasia is scarce, so the aim of our study was to conduct a large-scale study to detect selected tick-borne infectious agents in Armenia.

Methods: Overall, 209 adult ticks were collected from different hosts including 4 samples from human clothes.

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New taxonomic and faunistic data on the agelenid spiders of Turkiye and the Caucasus are provided. Five species are described as new to science: (♂♀; Turkiye: Antalya), (♂♀; Turkiye: Antalya), (♂; Turkiye: Antalya), (♂♀; Georgia: Imereti), and (♂♀; Armenia: Kotayk). Dimitrov, 2020, is proposed as a new junior synonym of Brignoli, 1978.

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Article Synopsis
  • The pilot study focused on the presence of micronuclei (MN) and other nuclear abnormalities in oral mucosa cells from patients with type I, II, and LADA diabetes, comparing results to healthy individuals.
  • Cytogenetic analysis indicated that diabetes patients had significantly higher levels of MN, particularly in type I and LADA groups, suggesting potential cytotoxic and genotoxic effects of the disease.
  • There was a strong correlation found between MN levels, blood glucose concentration, and glycosylated hemoglobin, highlighting the impact of diabetes on cellular health.
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A computational model that integrates unrestricted callus growth, mechanobiology, and angiogenesis can predict bone healing in rodents.

Sci Rep

November 2024

Musculoskeletal Translational Innovation Initiative, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, RN123, Boston, MA, 02215, USA.

We present a computational model that integrates mechanobiological regulations, angiogenesis simulations and models natural callus development to simulate bone fracture healing in rodents. The model inputs include atomic force microscopy values and micro-computed tomography on the first-day post osteotomy, which, combined with detailed finite element modeling, enables scrutinizing mechanical and biological interactions in early bone healing and throughout the healing process. The model detailed mesenchymal stem cell migration patterns, which are essential for tissue transformation and vascularization during healing, indicating the vital role of blood supply in the healing process.

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