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Measurement of yields and angular distributions ofγ-quanta from the interaction of 14.1 MeV neutrons with oxygen,phosphorus,and sulfur

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Chinese Physics C 2024年第3期48卷 79-92页

作者： D.N.Grozdanov N.A.Fedorov S.B.Dabylova Yu.N.Kopatch i.N.Ruskov V.R.Skoy T.Yu.Tretyakova C.Hramco P.i.Kharlamov G.V.Pampushik P.G.Filonchik A.V.Andreev Joint institute for Nuclear Research(JiNR) DubnaRussia institute for Nuclear Research and Nuclear Energy Bulgarian Academy of SciencesSofiaBulgaria Faculty of Physics Lomonosov Moscow State UniversityMoscowRussia L.N.Gumilyov Eurasian National University AstanaKazakhstan Skobeltsyn institute of Nuclear Physics Moscow State UniversityMoscowRussia institute of Chemistry of Moldova ChisinauRepublic of Moldova Moscow institute of Physics and Technology MoscowRussia

A study of the inelastic scattering of neutrons with an energy of 14.1 MeV on the nuclei of oxygen,phosphorus,and sulfur was performed at the TANGRA facility at JiNR(Dubna).The experiment aimed to refine existing data and obtain new data on the yields and angular distributions ofγ-quanta emitted by the studied nuclei due to neutron-induced nuclear reactions using the tagged neutron *** types of detector systems were used to registerγ-***γ-ray yields were measured using a high-purity germanium(HPGe)*** angular distributions ofγ-rays were obtained using a system of 18 scintillation detectors based on bismuth germanite Bi_(4)Ge_(3)O_(12)(BGO)located around the *** performed experiments measured the yields of two transitions for the reaction of tagged neutrons with 16O,nine transitions for the reaction with ^(31)P,and nine transitions for the reaction with ^(32)S for the first *** angular anisotropy of theγ-radiation accompanying the inelastic scattering of neutrons with an energy of 14.1 MeV on ^(31)P nuclei was also measured for the first time.

关键词： tagged neutron method yields of gamma-quanta high-resolution gamma-spectrometry neutron-nuclear reactions neutron scattering

Polariton lasing in Mie-resonant perovskite nanocavity

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Opto-Electronic Advances 2024年第4期7卷 27-42页

作者： Mikhail A.Masharin Daria Khmelevskaia Valeriy i.Kondratiev Daria i.Markina Anton D.Utyushev Dmitriy M.Dolgintsev Alexey D.Dmitriev Vanik A.Shahnazaryan Anatoly P.Pushkarev Furkan isik ivan V.iorsh ivan A.Shelykh Hilmi V.Demir Anton K.samusev Sergey V.Makarov UNAM-institute of Materials Science and Nanotechnology National Nanotechnology Research CenterDepartment of Electrical and Electronics EngineeringDepartment of PhysicsBilkent UniversityAnkara 06800Turkey iTMO University School of Physics and EngineeringSt.Petersburg 197101Russia Abrikosov Center for Theoretical Physics MIPTDolgoprudnyiMoscow Region 141701Russia LUMiNOUS!Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic EngineeringSchool of Physical and Mathematical SciencesSchool of Materials Science and EngineeringNanyang Technological UniversitySingapore 639798Singapore Department of Physics Engineering Physics and AstronomyQueen’s UniversityKingstonOntario K7L 3N6Canada Science institute University of IcelandDunhagi 3IS-107ReykjavikIceland Experimentelle Physik 2 Technische Universität DortmundDortmund 44227Germany Qingdao innovation and Development Center Harbin Engineering UniversityQingdao 266000China

Deeply subwavelength lasers(or nanolasers)are highly demanded for compact on-chip bioimaging and sensing at the *** of the main obstacles for the development of single-particle nanolasers with all three dimensions shorter than the emitting wavelength in the visible range is the high lasing thresholds and the resulting *** we ex-ploit exciton-polariton condensa.ion and mirror-image Mie modes in a cuboid CsPbBr3 nanoparticle to achieve coherent emission at the visible wavelength of around 0.53μm from its ultra-small(≈0.007μm3 or≈λ3/20)semiconductor *** polaritonic nature of the emission from the nanocavity localized in all three dimensions is proven by direct com-parison with corresponding one-dimensional and two-dimensional waveguiding systems with similar material *** a deeply subwavelength nanolaser is enabled not only by the high values for exciton binding energy(≈35 meV),re-fractive index(>2.5 at low temperature),and luminescence quantum yield of CsPbBr3,but also by the optimization of po-laritons condensa.ion on the Mie resonances with quality factors improved by the metallic ***,the key parameters for optimal lasing conditions are intermode free spectral range and phonons spectrum in CsPbBr3,which govern polaritons condensa.ion *** chemically synthesized colloidal CsPbBr3 nanolasers can be potentially de-posited on arbitrary surfaces,which makes them a versa.ile tool for integration with various on-chip systems.

关键词： nanolaser perovskite polariton Mie resonance exciton-polariton

Determination of Thermal Properties of Unsmooth Si Nanowires

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Chinese Physics Letters 2024年第1期41卷 51-56页

作者：刘世贤 Alexander A.Barinov 訚菲 Vladimir i.Khvesyuk Department of Thermophysics Bauman Moscow State Technical UniversityMoscow 105005Russian Federation

We estimate the thermal properties of unsmooth Si nanowires,considering key factors such as size(diameter),surface texture(roughness)and quantum size effects(phonon states)at different *** nanowires with a diameter of less than 20 nm,we highlight the importance of quantum size effects in heat capacity calculations,using dispersion relations derived from the modified frequency equation for the elasticity of a *** thermal conductivities of nanowires with diameters of 37,56,and 115nm are predicted using the Fuchs–Sondheimer model and Soffer’s specular ***,the roughness parameters are chosen to reflect the technological characteristics of the real *** findings reveal that surface texture plays a significant role in thermal conductivity,particularly in the realm of ballistic heat transfer within *** study provides practical recommendations for developing new thermal management materials.

关键词： nanowires roughness size

Overview on signal transduction cascades regulation roles of garlic and its bioactive constituents

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Food Science and Human Wellness 2024年第5期13卷 2353-2362页

作者： Ammad Ahmad Farooqi iqra Mobeen Rukset Attar Khalida i.Noel Baojun Xu William C.Cho institute of Biomedical and Genetic Engineering(iBGE) Islamabad 44000Pakistan Khursheed Rasheed Hospital Lahore Lahore 53720Pakistan Department of Obstetrics and Gynecology Yeditepe UniversityAtaşehir 34755Turkey Human Anatomy Department College of MedicineAl-Mustansiriyah UniversityBaghdad 10036Iraq Food Science and Technology Program Department of Life SciencesBNU-HKBU United International CollegeZhuhai 519087China Department of Clinical Oncology Queen Elizabeth HospitalHong Kong G514TFChina

High-throughput technologies in combination with modern exciting advancements in mass spectrometry-based proteomics and data analysis pipelines have empowered comprehensive characterization of disease phenotypes and their mechanistic regulation by dietary agents and bioactive molecules at unprecedented dimensionality and ***-ordinary breakthroughs in the field of nutrigenomics have leveraged our understanding altogether to a new level of *** researchers have extensively analyzed health promoting and pharmacologically significant properties of garlic(Allium sa.ivum).importantly,garlic and its biologically active chemicals targeted oncogenic signaling *** this mini-review we have attempted to summarize how garlic and its bioactive constituents regulated signal transduction cascades in cell culture studies and tumor-bearing mice.

关键词： Cancer Nutrigenomics Signaling Apoptosis Allium sa.ivum

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信迪利单抗联合DA-EPOCH-R方案治疗弥漫大B细胞淋巴瘤的效果分析

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临床研究 2024年第9期32卷 11-14页

作者：刘飒南阳市中心医院肿瘤内科三病区河南南阳473000

目的探究弥漫大B细胞淋巴瘤(DLBCL)联合应用环磷酰胺+表柔比星+依托泊苷+长春新碱+泼尼松+利妥昔单抗(DA-EPOCH-R)方案与信迪利单抗的具体效果。方法选取2020年1月至2023年12月南阳市中心医院肿瘤内科收入诊治的82例DLBCL病例,以治疗方... 详细信息

目的探究弥漫大B细胞淋巴瘤(DLBCL)联合应用环磷酰胺+表柔比星+依托泊苷+长春新碱+泼尼松+利妥昔单抗(DA-EPOCH-R)方案与信迪利单抗的具体效果。方法选取2020年1月至2023年12月南阳市中心医院肿瘤内科收入诊治的82例DLBCL病例,以治疗方案的不同,将其分为研究组(n=41,信迪利单抗+DA-EPOCH-R方案),对照组(n=41,单纯应用DA-EPOCH-R方案),分析其疗效、血清标志物、免疫指标及并发症差异。结果研究组客观缓解率(ORR),疾病控制率(DCR)均高于对照组,差异均有统计学意义(P0.05),治疗后,两组血清标志物、免疫指标指标均降低,且研究组低于对照组,差异均有统计学意义(P0.05)。结论DLBCL治疗期间,联合应用DA-EPOCH-R方案与信迪利单抗能够取得较为理想的临床疗效,改善血清标志物以及免疫指标,不会额外增加并发症发生率,具有临床应用意义。

关键词：信迪利 DA-EPOCH-R方案弥漫大B细胞淋巴瘤疗效

探讨健康教育联合心理护理对更年期综合征患者生活质量、焦虑及抑郁情绪的影响

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实用妇科内分泌电子杂志 2024年第1期11卷 112-114页

作者：张飒陕西财经职业技术学院陕西咸阳712000

目的探讨健康教育联合心理护理对女性更年期综合征患者生活质量、焦虑及抑郁情绪的影响。方法选取100例更年期综合征患者,采用随机数字表法将其分为观察组与对照组,每组50例。对照组患者应用常规护理,观察组患者应用健康教育联合心理护... 详细信息

目的探讨健康教育联合心理护理对女性更年期综合征患者生活质量、焦虑及抑郁情绪的影响。方法选取100例更年期综合征患者,采用随机数字表法将其分为观察组与对照组,每组50例。对照组患者应用常规护理,观察组患者应用健康教育联合心理护理干预。比较两组患者干预前后临床效果。结果观察组患者干预后盗汗、失眠、健忘、烦躁评分均低于对照组(P<0.05)。两组患者干预后焦虑、抑郁评分均较干预前降低,观察组各项评分低于对照组(P<0.05)。观察组患者干预后生活质量评分(2.57±1.13)分明显低于对照组的(5.21±2.04)分(P<0.05)。结论更年期综合征患者采用健康教育联合心理护理进行干预,有助于改善患者焦虑、抑郁的负性情绪,提高生活质量,具有临床应用价值。

关键词：健康教育更年期综合征生活质量

impact of reducing and capping agents on carbohydrates for the growth of Ag and Cu nanostructures and their antibacterial activities

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Particuology 2019年第2期17卷 219-226页

作者： Rayees Ahmad rather Ramandeep K. sarwara Niranjan Das Bonamali Pal School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147004 Punjab India Department of Biotechnology Thapar Institute of Engineering and Technology Patiala 147004 Punjab India

This study presents a viable green synthesis approach to produce Ag and Cu nanoparticles (MNPs) by using carbohydrates such as glucose, fructose, sucrose, and starch as reducing agents and describes theirantimicrobial activities against Escherichia coli DH5a. Optical and diffused light scattering analyses showed the Ag NPs ranged from 20 to 75 nm and the Cu NPs varied from 20 to 160 nm, which supports the differences in their absorption bands (400-434 nm for Ag and 458-641 nm for Cu). The reducing sugars interacted differently with Ag^+ and Cu^2+ based on their size and hydrolysis by NaOH resulting in effective stabilization of Ag^0 and Cu^0 and variation in the bactericidal activities of the MNPs. The antibacterial effects of the MNPs were evaluated by measuring the inhibition zones using E. coli DH5a as a test organism. No growth was observed by restreaking different parts of the clearly inhibited zones into new culture plates indicating the bactericidal efficacy of the Ag and Cu MNPs. The Ag NPs were found to be more effective in terms of the size of their in hibition zones (1.21-1.82 cm) compared with those of the Cu NPs (0.0-1.2 cm). This study provides a promising basis for the formulation of a new gen eration of bactericidal agents.

关键词： Green synthesis Ag and Cu nanoparticles Carbohydrate reducing agents Antibacterial activities

BiERMER’s Disease: About 4 Cases Diagnosed at Regional University Hospital of Ouahigouya (Chur/Ohg) and Literature Review

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Open Journal of Gastroenterology 2024年第9期14卷 322-329页

作者： Zanga Damien Ouattara Stève Léonce Zoungrana saïdou santi Emeline Agathe Carama Fabien Dembele Bafima Désiré Diarra Alain Bougouma Department of Gastroenteroly Ouahigouya Regional University Hospital Ouahigouya Burkina Faso Department of Neurology Bogodogo University Hospital Ouagadougou Burkina Faso Department of Gastroenterology Yalgado Oudraogo University Hospital Center Ouagadougou Burkina Faso

Megaloblastic pernicious anemia is an autoimmune disorder, considered rare in African context. The objective of this study was to report four clinical cases collected at the CHUR/OHG, and to review the literature. The study population consisted of two men and two women. The clinical manifestations were mainly neurological and hematological. The neurological signs were mainly paresthesia. One patient presented memory problems. On the biological level, macrocytic anemia and vitamin B12 deficiency were reported in two cases prior to treatment while the other two without serological assay of vitamin B12 were put on trial treatment. Anti-intrinsic factor antibodies were positive in three patients. The Schilling test was not used. Upper gastrointestinal endoscopy revealed atrophic fundic gastritis in all four patients who received treatment through intramuscular injection of hydroxocobalamin (vitamin B12). The evolution was favorable after one month of treatment in all cases. The literature review is dominated by clinical case reports, the largest cohorts of which are from the Maghreb.

关键词： Anemia Pernicious Megaloblastic Vitamin B12

Biofabrication of nanocomposite-based scaffolds containing human bone extracellularmatrix for the differentiation of skeletal stem and progenitor cells

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Bio-Design and Manufacturing 2024年第2期7卷 121-136页

作者： Yang-Hee Kim Janos M.Kanczler Stuart Lanham Andrew Rawlings Marta Roldo Gianluca Tozzi Jonathan i.Dawson Gianluca Cidonio Richard O.C.Oreffo Faculty of Medicine Bone and Joint Research GroupCentre for Human DevelopmentStem Cells and RegenerationInstitute of Developmental SciencesUniversity of SouthamptonSouthampton SO166YDUK School of Pharmacy and Biomedical Science University of PortsmouthPortsmouth PO12DTUK School of Engineering Faculty of Engineering and ScienceUniversity of GreenwichGreenwich ME44TBUK Center for Life Nano-and Neuro-Science(CLN2S) Italian Institute of Technology00161 RomeItaly

Autograft or metal implants are routinely used in skeletal ***,they fail to provide long-term clinical resolution,necessitating a functional biomimetic tissue engineering *** use of native human bone tissue for synthesizing a biomimeticmaterial inkfor three-dimensional(3D)bioprintingof skeletal tissueis anattractivestrategyfor ***,human bone extracellular matrix(bone-ECM)offers an exciting potential for the development of an appropriate microenvironment for human bone marrow stromal cells(HBMSCs)to proliferate and differentiate along the osteogenic *** this study,we engineered a novel material ink(LAB)by blending human bone-ECM(B)with nanoclay(L,Laponite®)and alginate(A)polymers using extrusion-based *** inclusion of the nanoﬁller and polymeric material increased the rheology,printability,and drug retention properties and,critically,the preservation of HBMSCs viability upon *** composite of human bone-ECM-based 3D constructs containing vascular endothelial growth factor(VEGF)enhanced vascularization after implantation in an ex vivo chick chorioallantoic membrane(CAM)*** inclusion of bone morphogenetic protein-2(BMP-2)with the HBMSCs further enhanced vascularization and mineralization after only seven *** study demonstrates the synergistic combination of nanoclay with biomimetic materials(alginate and bone-ECM)to support the formation of osteogenic tissue both in vitro and ex vivo and offers a promising novel 3D bioprinting approach to personalized skeletal tissue repair.

关键词： Extracellular matrix Nanoclay Bone 3D bioprinting