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Systematic study of the(n,2n)reaction cross section for^(121)Sb and^(123)Sb isotopes

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Chinese Physics C 2022年第5期46卷 77-94页

作者： R.K.Singh n.l.Singh R.D.Chauhan Mayur Mehta S.V.Suryanarayana Rajnikant Makwana B.K.nayak H.naik Tarak nath nag K.Katovsky Department of Physics Faculty of Sciencethe M.S.University of BarodaVadodara-390002INDIA Department of Physics Netaji Subhas University of TechnologyDwarkaNew Delhi-110078INDIA Institute for Plasma Research Gandhinagar-382428INDIA nuclear Physics Division Bhabha Atomic Research CentreMumbaiINDIA Radiochemistry Division Bhabha Atomic Research CentreMumbaiINDIA Department of Electrical Power Engineering Brno University of TechnologyBrno-61600Czech Republic

The cross sections of the^(121)Sb(n,2n)^(120)Sb^(m) and ^(123)Sb(n,2n)^(122)Sb reactions were measured at 12.50,15.79 and 18.87 MeV neutron energies relative to the standard ^(27)Al(n,α)^(24)na monitor reaction using neutron activation and offline γ-ray *** of the samples was performed at the BARC-TIFR Pelletron linac Facility,Mumbai,*** quasi-monoenergetic neutrons were generated via the ^(7)li(p,n)*** model calculations were performed by nuclear reaction codes TAlYS(ver.1.9)and EMPIRE(ver.3.2.2)using various input parameters and nuclear level density *** cross sections of the ground and the isomeric state as well as the isomeric cross section ratio were studied theoretically from reaction threshold to 26 MeV *** effect of pre-equilibrium emission is also discussed in detail using different theoretical *** present measured cross sections were discussed and compared with the reported experimental data and evaluation data of the JEFF-3.3,EnDF/B-VIII.0,JEnDl/AD-2017 and TEnDl-2019 libraries.A detailed analysis of the uncertainties in the measured cross section data was performed using the covariance analysis ***,a systematic study of the(n,2n)reaction cross section for^(121)Sb and^(123)Sb isotopes was also performed within 14-15 MeV neutron energies using various systematic *** work helps to overcome discrepancies in Sb data and illustrate a better understanding of pre-equilibrium emission in the(n,2n)reaction channel.

关键词： antimony (n,2n)reaction cross section 7li(p,n)reaction neutron source neutron activation and offlineγ-ray spectrometry systematic formulae covariance analysis TAlYS(ver.1.9)and EMPIRE(ver.3.2.2)codes

An unsupervised pattern recognition methodology based on factor analysis and a genetic-DBSCAn algorithm to infer operational conditions from strain measurements in structural applications

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Chinese Journal of Aeronautics 2021年第2期34卷 165-181页

作者： Juan Carlos PERAFAn-lOPEZ Julian SIERRA-PEREZ Grupo de Investigacion en Ingenieria Aeroespacial Universidad Pontificia BolivarianaCircular 170-01Medellin 050031Colombia

Structural Health Monitoring(SHM) suggests the use of machine learning algorithms with the aim of understanding specific behaviors in a structural system. This work introduces a pattern recognition methodology for operational condition clustering in a structure sample using the well known Density Based Spatial Clustering of Applications with noise(DBSCAn) *** methodology was validated using a data set from an experiment with 32 Fiber Bragg Gratings bonded to an aluminum beam placed in cantilever and submitted to cyclic bending loads under 13 different operational conditions(pitch angles). Further, the computational cost and precision of the machine learning pipeline called FA + GA-DBSCAn(which employs a combination of machine learning techniques including factor analysis for dimensionality reduction and a genetic algorithm for the automatic selection of initial parameters of DBSCAn) was measured. The obtained results have shown a good performance, detecting 12 of 13 operational conditions, with an overall precision over 90%.

关键词： Clustering DBSCAn Factor analysis FBGs Pattern recognition Strain field

Identification of SUMO Targets by a novel Proteomic Approach in Plants

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Journal of Integrative Plant Biology 2013年第1期55卷 96-107页

作者： Gema lópez-Torrejón Davide Guerra Rafael Catal Julio Salinas Juan C. del Pozo Centro de Biotecnología y Genómica de Plantas (InIA-UPM) Campus de Montegancedo CRA-Genomics Research Centre (GPG) Centro de Investigaciones Biológicas (CSIC) Campus de la Ciudad Universitaria de Madrid

Post-translational modifications （PTMs） chemically and physically alter the properties of proteins, including their folding, subcellular localization, stability, activity, and consequently their function. In spite of their relevance, studies on PTMs in plants are still limited. Small Ubiquitin-like Modifier （SUMO） modification regulates several biological processes by affecting protein-protein interactions, or changing the subcellular Iocalizations of the target proteins. Here, we describe a novel proteomic approach to identify SUMO targets that combines 2-D liquid chromatography, immunodetection, and mass spectrometry （MS） analyses. We have applied this approach to identify nuclear SUMO targets in response to heat shock. Using a bacterial SUMOylation system, we validated that some of the targets identified here are, in fact, labeled with SUMO1. Interestingly, we found that GIGAnTEA （GI）, a photoperiodic-pathway protein, is modified with SUMO in response to heat shock both in vitro and in vivo.

关键词： Mass spectrometry plants post-translational modification proteomics SUMO.

Counter-regulatory phosphatases TnAP and nPP1 temporally regulate tooth root cementogenesis

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International Journal of Oral Science 2015年第1期7卷 27-41页

作者： laura E Zweifler Mudita K Patel Francisco H nociti Jr Helen F Wimer Jose l Milln Martha J Somerman Brian l Foster national Institute of Arthritis and Musculoskeletal and Skin Diseases (nIAMS) National Institutes of Health (NIH) Department of Prosthodontics and Periodontics Division of Periodontics School of Dentistry Campinas State University Department of Vertebrate Zoology National Museum of Natural History Smithsonian Institution Sanford Children’s Health Research Center Sanford-Burnham Medical Research Institute

Cementum is critical for anchoring the insertion of periodontal ligament fibers to the tooth root. Several aspects of cementogenesis remain unclear, including differences between acellular cementum and cellular cementum, and between cementum and bone. Biomineralization is regulated by the ratio of inorganic phosphate （Pi） to mineral inhibitor pyrophosphate （PPi）, where local Pi and PPi concentrations are controlled by phosphatases including tissue-nonspecific alkaline phosphatase （TnAP） and ectonucleotide pyrophosphatase/phosphodiesterase 1 （nPP1）. The focus of this study was to define the roles of these phosphatases in cementogenesis. TnAP was associated with earliest cementoblasts near forming acellular and cellular cementum. With loss of TnAP in the Alpl null mouse, acellular cementum was inhibited, while cellular cementum production increased, albeit as hypomineralized cementoid. In contrast, nPP1 was detected in cementoblasts after acellular cementum formation, and at low levels around cellular cementum. loss of nPP1 in the Enppl null mouse increased acellular cementum, with little effect on cellular cementum. Developmental patterns were recapitulated in a mouse model for acellular cementum regeneration, with early TnAP expression and later nPP1 expression. In vitro, cementoblasts expressed Alpl gene/protein early, whereas Enppl gene/protein expression was significantly induced only under mineralization conditions. These patterns were confirmed in human teeth, including widespread TnAP, and nPP1 restricted to cementoblasts lining acellular cementum. These studies suggest that early TnAP expression creates a low PPi environment promoting acellular cementum initiation, while later nPP1 expression increases PPi, restricting acellular cementum apposition. Alterations in PPi have little effect on cellular cementum formation, though matrix mineralization is affected.

关键词： cementum bone ectonucleotide pyrophosphatase phosphodiesterase 1 periodontal ligament progressive ankylosis protein tissue-nonspecific aJkalJne phosphatase

Cell Death Mechanisms Induced by Cytotoxic lymphocytes

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Cellular & Molecular Immunology 2009年第1期6卷 15-25页

作者： Chávez-Galán l Arenas-Del Angel MC Zenteno E Chávez R lascurain R Departamento de Bioquímica Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas" Departamento de Bioquímica Facultad de MedicinaUniversidad Nacional Autónoma de México

One of the functions of the immune system is to recognize and destroy abnormal or infected cells to maintain homeostasis. This is accomplished by cytotoxic lymphocytes. Cytotoxicity is a highly organized multifactor process. Here, we reviewed the apoptosis pathways induced by the two main cytotoxic lymphocyte subsets, natural killer （nK） cells and CD8^＋T cells. In base to recent experimental evidence, we reviewed nK receptors involved in recognition of target-cell, as well as lytic molecules such as perforin, granzymes-A and -B, and granulysin. In addition, we reviewed the Fas-Fasl intercellular linkage mediated pathway, and briefly the cross-linking of tumor necrosis factor （TnF） and TnF receptor pathway. We discussed three models of possible molecular interaction between lytic molecules from effector cytotoxic cells and target-cell membrane to induction of apoptosis. Cellular ＆ Molecular Immunology.

关键词： apoptosis cytotoxic cell granule-dependent exocytosis Fasl TnF

Cardiopulmonary resuscitation in the elderly: a clinical and ethical perspective

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老年心脏病学杂志：英文版 2007年第2期4卷 117-119页

作者： Ana l. Huerta-Alardín Manuel Guerra-Cantú Joseph Varon Dorrington Medical Associates Houston Texas Universidad de Monterrey School of Medicine Monterrey México The University of Texas Health Science Center St. Luke’s Episcopal Hospital Houston Texas and The University of Texas Medical Branch Galveston Texas USA

The daily practice of cardiopulmonary resuscitation (CPR) in elderly patients has brought up the attention of outcome research and resource allocation. Determinants to predict survival have been well identified. There has been empirical evidence that CPR is of doubtful utility in the geriatric population, more studies have showed controversial data. Sometimes situations in which CPR needs to be given in the elderly, causes stress to healthcare providers, due to lack of communication of the patient’s wishes and the belief that it will not be successful. It is of importance to state that we have the duty to identify on time the patients that will most likely benefit from CPR, and find out the preferences of the same. Whenever it is possible to institute these guidelines, we will avoid patient suffering.

关键词： cardiopulmonary resuscitation advanced directives

Comparison of crustal and upper mantle heterogeneity in different time periods: Indonesian subduction zone to northern Australia

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Earthquake Science 2014年第1期27卷 47-55页

作者： Weijia Sun li-Yun Fu B.l.n.Kennett Key laboratory of the Earth’s Deep Interior Institute of Geology and Geophysics Chinese Academy of Science Research School of Earth Sciences The Australian National University

Earthquake events from the Indonesian subduction zone recorded in northern Australia show a long and high-frequency coda associated with both P and S waves. Regional events recorded by Warramunga array in northern Australia can separate out wave propagation through the mantle by focusing on the coherent signal across the medium-aperture array. Most of the incoherent wave components result from structures in the vicinity of the array with small-scale lengths of 1-2 km or smaller. The coherent phases with relatively rapid changes in waveforms are associated with the scattering of seismic waves by crustal and mantle heterogeneity, but in some case can be related to structural effects near the source. As the depth of the source increases, the coherent portion of the seismic wavefield tends to become much simpler, which suggests that the heterogeneity tends to weaken at depth with larger-scale length. We compare the coherent signal features of earthquakes from the Indonesian subduction zone that have occurred in recent years with those in the early 1980s, first studied by Kennett （Phys Earth Planet Inter 47： 319-332, 1987）. The general characteristics of the coherent signal variation with depth in recent years are the same as those observed in 1980s, but the variations are larger. This change suggests a stringer var- iation in heterogeneity with depth than before, which may bear important information about the dynamic processes and evolution of the crust and upper mantle.

关键词： Crust Mantle Heterogeneity

EurBeST——商业养蜂条件下的抗螨蜂种选育

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中国蜂业 2024年第2期75卷 22-23页

作者： R.Buechler A.Uzunov C.Costa M.Meixner Y le Conte F.Mondet M.Kovacic S.Andonov n.l.Carreck l.Dimitrov B.Basso M.Bienkowska R.Dall’Olio F.Hatjina U.Wirtz 陈超(文\图) 单金琼(文\图) 不详

上期我们讲了抗螨蜜蜂的选育以及取得的成效,本期我们继续讨论选育抗螨蜜蜂过程中遇到的问题及建议。一、种蜂王的用户调查对目前蜂王市场的调查显示,客户的期望值很高,但满意度一般。欧洲养蜂人希望买到高品质的蜂王,其中最重要的是抗... 详细信息

上期我们讲了抗螨蜜蜂的选育以及取得的成效,本期我们继续讨论选育抗螨蜜蜂过程中遇到的问题及建议。一、种蜂王的用户调查对目前蜂王市场的调查显示,客户的期望值很高,但满意度一般。欧洲养蜂人希望买到高品质的蜂王,其中最重要的是抗病和高产。但是,他们对抗病性的满意度最低(图1)。近50%的用户认为选择育种是实现免用药养蜂的重要甚至唯一的手段。具有悠久育种传统的国家的用户对选择育种的认可率更高。

关键词：选择育种用户调查蜂王问题及建议抗螨养蜂人蜜蜂商业养蜂

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Deep learning based computer vision approaches for smart agricultural applications

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Artificial Intelligence in Agriculture 2022年第1期6卷 211-229页

作者： V.G.Dhanya A.Subeesh n.l.Kushwaha Dinesh Kumar Vishwakarma T.nagesh Kumar G.Ritika A.n.Singh ICAR-Indian Institute of Seed Science MauUttar Pradesh 275101India ICAR-Central Institute of Agricultural Engineering BhopalMadhya Pradesh 462038India ICAR-Indian Agricultural Research Institute New Delhi 110012India Govind Ballabh Pant University of Agriculture and Technology PantnagarUttarakhand 263145India ICAR-national Institute of natural Fibre Engineering and Technology Kolkata 700040India

The agriculture industry is undergoing a rapid digital transformation and is growing powerful by the pillars of cutting-edge approaches like artificial intelligence and allied *** the core of artificial intelligence,deep learning-based computer vision enables various agriculture activities to be performed automatically with utmost precision enabling smart agriculture into *** vision techniques,in conjunction with high-quality image acquisition using remote cameras,enable non-contact and efficient technology-driven solutions in *** review contributes to providing state-of-the-art computer vision technologies based on deep learning that can assist farmers in operations starting from land preparation to *** works in the area of computer vision were analyzed in this paper and categorized into(a)seed quality analysis,(b)soil analysis,(c)irrigation water management,(d)plant health analysis,(e)weed management(f)livestock management and(g)yield *** paper also discusses recent trends in computer vision such as generative adversarial networks(GAn),vision transformers(ViT)and other popular deep learning ***,this study pinpoints the challenges in implementing the solutions in the farmer’s field in *** overall finding indicates that convolutional neural networks are the corner stone of modern computer vision approaches and their various architectures provide high-quality solutions across various agriculture activities in terms of precision and ***,the success of the computer vision approach lies in building the model on a quality dataset and providing real-time solutions.

关键词： Agriculture automation Computer vision Deep learning Machine learning Smart agriculture Vision transformers