Publications by authors named "Martynov I"

Transition metal dichalcogenides (TMDCs), particularly molybdenum disulfide (MoS), have gained significant attention in the field of optoelectronics and photonics due to their unique electronic and optical properties. The integration of TMDCs with plasmonic materials allows to tailor the optical response and offers significant advantages for photonic applications. This study presents a novel approach to synthesize MoS-Au nanocomposites utilizing femtosecond laser ablation in liquid to achieve tunable optical properties in the near-infrared (NIR) region.

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Article Synopsis
  • Treatment for advanced pediatric rhabdomyosarcoma with peritoneal sarcomatosis involves a combination of cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (HIPEC), but the ideal drug dosages and combinations have not been well-studied.
  • An in vivo mouse model was created to test the efficacy of different doses of cisplatin and doxorubicin in HIPEC, finding that certain dosages significantly reduced the extent of tumor spread, indicated by the peritoneal cancer index (PCI).
  • Results showed that a combination of lower doses of both drugs had the best effect on reducing tumor spread, suggesting that further research is needed to fully understand the treatment's impact and improve strategies.
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Left ventricular diverticulum (LVD) is a rare malformation presenting in 0.05% of all congenital cardiac anomalies. It is associated with additional cardiac and extracardiac malformations.

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Background: This study aimed to assess the impact that the quality of primary and subsequent surgeries has on the survival of patients with para-testicular rhabdomyosarcoma (PTRMS).

Methods: Patients with localized (IRS I-III) and metastatic (IRS IV) PTRMS were enrolled in the two Cooperative Weichteilsarkom Studiengruppe (CWS) trials (CWS-96, CWS-2002P) and the Soft Tissue Sarcoma Registry (SoTiSaR).

Results: Among 196 patients (median age, 8.

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Background: Rhabdomyosarcoma (RMS) is the most common pediatric soft-tissue malignancy, characterized by high clinicalopathological and molecular heterogeneity. Preclinical models are essential for advancing our understanding of RMS oncobiology and developing novel treatment strategies. However, the diversity of scholarly data on preclinical RMS studies may challenge scientists and clinicians.

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Objective: Hypnosis can be an effective treatment for many conditions, and there have been attempts to develop instrumental approaches to continuously monitor hypnotic state level ("depth"). However, there is no method that addresses the individual variability of electrophysiological hypnotic correlates. We explore the possibility of using an EEG-based passive brain-computer interface (pBCI) for real-time, individualised estimation of the hypnosis deepening process.

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Herein, we present an efficient approach for screening the intrinsic photostability of organic absorber materials used in photovoltaic applications. Using a series of structurally related conjugated polymers and a set of complementary techniques, we established important "material structure-photostability" relationships. In particular, we have revealed that the introduction of alkoxy, thioalkyl, and fluorine substituents adversely affects the material photostability.

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The article presents results of experimental and theoretical analysis of the T-shaped and linear HeICl van der Waals complexes in the valence A1 and ion-pair β1 states as well as the HeICl(A1,v ,n ←X0 ,v =0,n and β1,v ,n ←A1,v ,n ) optical transitions (n are quantum numbers of the vdW) modes). The HeICl(β1,v ,n )→He+ICl(E0 , , β1) decay are also studied. Luminescence spectra of the HeICl(β1,v =0-3,n ) complex electronic (ICl(E0 ,v , ) and vibrational ICl(β1,v ) predissociation products are measured, and branching ratios of decay channels are determined.

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The aim of this multinational survey was to provide insights into individual surgeon's experience with implementation of enhanced recovery after surgery (ERAS) programs centered on minimally invasive surgery (misERAS) and to identify perceived barriers to utilization of these protocols. An online survey was conducted between July 2021 and March 2022 on behalf of the International Pediatric Endosurgery Group (IPEG) and European Paediatric Surgeons' Association (EUPSA) Research Committees. All IPEG and EUPSA members were contacted by e-mail and asked to complete an anonymous questionnaire that included 20 items.

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This paper presents the experimental and theoretical analyses of ArICl(IP,v,n) states' population and decay at energies lower than the ArICl(E,v = 0,n) dissociation limit (IP = E0, D'2, β1), v = 0, 1, and n are the quantum numbers of the van der Waals (vdW) modes. We have measured the excitation spectra of the ArICl(E,v = 0,1,n → X,v,n) and ArICl(β,0,n → A and/or D,v ,n →A luminescence as well as luminescence spectra themselves. To construct potential energy surfaces (PESs) for valence (A1, A'2) and ion-pair (E, β, and D') electronic states of the complex, we utilized the intermolecular diatomic-in-molecule perturbation theory first order method.

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Objectives: The breathing phase for the determination of thoracic indices in patients with pectus excavatum is not standardized. The aim of this study was to identify the best period for reliable assessments of morphologic indices by dynamic observations of the chest wall using real-time MRI.

Methods: In this prospective study, patients with pectus excavatum underwent morphologic evaluation by real-time MRI at 3 T between January 2020 and June 2021.

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Background: Pediatric minimally invasive surgery (MIS) is a standard technique worldwide. We aimed to analyze the research activity in this field. Methods: Articles on pediatric MIS (1991−2020) were analyzed from the Web of Science™ for the total number of publications, citations, journals, and impact factors (IF).

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Erbium upconversion (UC) photoluminescence (PL) from sol-gel derived barium titanate (BaTiO:Er) xerogel structures fabricated on silicon, glass or fused silica substrates has been studied. Under continuous-wave excitation at 980 nm and nanosecond pulsed excitation at 980 and 1540 nm, the fabricated structures demonstrate room temperature PL with several bands at 410, 523, 546, 658, 800 and 830 nm, corresponding to the H → I, H → I, S → I, F→ I and I→ I transitions of Er ions. The intensity of erbium UC PL increases when an additional macroporous layer of strontium titanate is used beneath the BaTiO xerogel layer.

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Purpose: Anorectal malformations (ARM) are one of the most challenging congenital malformations in pediatric surgery. We aimed to assess the research activity on ARM over the last five decades.

Methods: Data on original research publications were retrieved from the Web of Science Core Collection (1970-2020), and analyzed for countries, authors, scientific journals, and top-ten papers.

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Three new benzothiadiazole (BTD)-containing luminophores with different configurations of aryl linkers have been prepared via Pd-catalyzed cross-coupling Suzuki and Buchwald-Hartwig reactions. Photophysical and electroluminescent properties of the compounds were investigated to estimate their potential for optoelectronic applications. All synthesized structures have sufficiently high quantum yields in film.

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Background: There is lack of evidence concerning safety of placement of tunneled central venous catheters (TCVCs) in neutropenic children with acute leukemias. Here, we evaluate the impact of absolute neutrophil count (ANC) at the time of TCVC placement on development of central line-associated bloodstream infections (CLABSI) in children with lymphoblastic (ALL) or myeloid leukemia (AML).

Materials And Methods: A retrospective observational study of children undergoing TCVC placement at a tertiary referral hospital between January 2000 and December 2019 was performed.

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Although organic solar cells have started to demonstrate competitive power conversion efficiencies of >18 %, their operational lifetimes remain insufficient for wide practical use and the factors influencing the photostability of absorber materials and completed devices are still not completely understood. A systematic study of two series of structurally similar [XTBT] and [XTTBTBTT] polymers (16 structures in total) reveals the building blocks that enable the highest material stability towards photooxidation: fluorene, silafluorene, carbazole, diketopyrrolopyrrole, and isoindigo. Furthermore, a direct correlation is evident between the electronic properties of the conjugated polymers and their reactivity towards oxygen.

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Necrotizing enterocolitis (NEC) and focal intestinal perforation (FIP) are two of the most common emergencies of the gastrointestinal tract in preterm infants with very low birth weight (VLBW, birth weight < 1500 g). Identification of risk factors among these children is crucial for earlier diagnosis and prompt intervention. In this study, we investigated a relationship between ABO blood groups and the risk for surgical NEC/FIP.

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The development of the mammalian gut was first described more than a century ago. Since then, it has been believed that a series of highly orchestrated developmental processes occur before the intestine achieves its final formation. The key steps include the formation of the umbilicus, the so-called "physiological herniation" of the midgut into the umbilical cord, an intestinal "rotation", and the "return of the gut" into the abdominal cavity.

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Assessment of current role and future trends of Single-Incision-Pediatric-Endoscopic-Surgery (SIPES) in pediatric surgery among International Pediatric Endosurgery Group (IPEG) members two decades after introduction. An online survey was conducted between December 2019 and April 2020 on behalf of the IPEG Research Committee. All IPEG members were contacted by e-mail and asked to complete an anonymous questionnaire that included 39 items on SIPES.

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Aims: This exploratory randomized controlled trial (RCT) aimed to determine the splint-related outcomes when using the novel biodegradable wood-composite splint (Woodcast) compared to standard synthetic fibreglass (Dynacast) for the immobilization of undisplaced upper limb fractures in children.

Methods: An exploratory RCT was performed at a tertiary paediatric referral hospital between 1 June 2018 and 30 September 2019. The intention-to-treat population consisted of 170 patients (mean age 8.

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Background: Wound dehiscence (WD) of the anocutaneous anastomosis or perineal body after posterior sagittal anorectoplasty (PSARP) is common. We aimed to evaluate the efficacy of a perineal vacuum-assisted closure (VAC) for prevention of WD following repair of anorectal malformations (ARM) with rectoperineal and rectovestibular fistula.

Methods: A retrospective dual-center case-control study of children undergoing PSARP without colostomy between 2011 and 2019 was performed.

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