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Semiconductor nanostructures enabled by aerosol technology

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Frontiers of physics 2014年第3期9卷 398-418页

作者： Martin H. Magnusson B. Jonas Ohlsson Mikael T. Bjork Kimberly A. Dick Magnus T. Borgstrom Knut Deppert Lars Samuelson solid State Physics Lund University Box 118 SE-22100 Lund Sweden sol voltaics ab Ideon Science Park Scheelevagen 17 SE-22370 Lund Sweden QuNano ab Ideon Science Park Scheelevaigen 17 SE-22370 Lund Sweden Center for Analysis and Synthesis Lund University Box 124 SE-22100 Lund Sweden

Aerosol technology provides efficient methods for producing nanoparticles with well-controlled composition and size distribution. This review provides an overview of methods and results obtained by using aerosol technology for producing nanostruetures for a variety of applications in semiconductor physics and device technology. Examples are given from： production of metal and metal alloy particles： semiconductor nanoparticles; semiconductor nanowires, grown both in the aerosol phase and on substrates; physics studies based on individual aerosol-generated devices; and large area deviees based on aerosol particles.

关键词： aerosol nanoparticle nanowire metal-organic vapor phase epitaxy (MOVPE) device physics light emitting diodes (LED) solar cell

A T follicular helper cell origin for T regulatory type 1 cells

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Cellular & Molecular Immunology 2023年第5期20卷 489-511页

作者： Patricia solé Jun Yamanouchi Josep Garnica Muhammad Myn Uddin Robert Clarke Joel Moro Nahir Garabatos Shari Thiessen Mireia Ortega Santiswarup Singha Debajyoti Mondal César Fandos Julio Saez-Rodriguez Yang Yang Pau Serra Pere Santamaria Institut D'investigacions Biomediques August Pi i Sunyer BarcelonaSpain Department of Microbiology Immunology and Infectious DiseasesSnyder Institute for Chronic DiseasesCumming School of MedicineUniversity of CalgaryCalgaryABCanada Institute of Computational Biomedicine Faculty of MedicineHeidelberg University HeidelbergGermany Department of Biochemistry and Molecular Biology Cumming School of MedicineUniversity of CalgaryCalgaryABCanada.

Chronic antigenic stimulation can trigger the differentiation of antigen-experienced CD4+T cells into T regulatory type 1(TR1)cells,a subset of interleukin-10-producing Treg cells that do not express *** identities of the progenitor(s)and transcriptional regulators of this T-cell subset remain ***,we show that the peptide-major histocompatibility complex class Il(pMHCll)monospecific immunoregulatory T-cell pools that arise in vivo in different genetic backgrounds in response to pMHCll-coated nanoparticles(pMHCll-NPs)are invariably comprised of oligoclonal subpools of T follicular helper(TFH)and TR1 cells with a nearly identical clonotypic composition but different functional properties and transcription factor expression *** analyses of scRNAseq data and multidimensional mass cytometry revealed progressive downregulation and upregulation of TFH and TR1 markers,***,pMHCIl-NPs trigger cognate TR1 cell formation in TFH cell-transfused immunodeficient hosts,and T-cell-specific deletion of Bcl6 or Irf4 blunts both the TFH expansion and TR1 formation induced by *** contrast,deletion of Prdm1 selectively abrogates the TFH-to-TR1 ***6 and Prdm1 are also necessary for anti-CD3 mabinduced TR1 ***,TFH cells can differentiate into TR1 cells in vivo,and BLIMP1 is a gatekeeper of this cellular reprogramming event.

关键词： T-regulatory type 1(TR1)cells autoimmunity T follicular helper(TFH)cells transdifferentiation nanomedicine

Study of photocurrent generation in InP nanowire-based p＋-i-n＋ photodetectors

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Nano Research 2014年第4期7卷 544-552页

作者： Vishal Jain Ali Nowzari Jesper Wallentin Magnus T. Borgstrom Maria E. Messing Damir Asoli Mariusz Graczyk Bemd Witzigmann Federico Capasso Lars Samuelson Hakan Pettersson solid State Physics and the Nanometer Structure Consortium Lund University Box 118 5E-221 O0 Lund Sweden Laboratory of Mathematics Physics and Electrical Engineering Halmstad University Box 823 SE-301 - 18 Halmstad Sweden sol voltaics ab Ideon Science Park Scheelevagen 17 SE-22370 Lund Sweden Department of Computational Electronics and Photonics University ofKassel Wilhelmshoeher Allee 71 D-34121 Kassel Germany School of Engineering and Applied Sciences Harvard University Cambridge Massachusetts 02138 USA

Response of soil mite abundance and diversity to a monospecific timber Tectona grandis plantation in Ivory Coast

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Current Zoology 2013年第5期59卷 633-643页

作者： Julien Kouadio N'DRI Henri Marc ANDRE Jan LAGERLOEF Jerome Ebagnerin TONDOH Thierry HANCE UFR des Sciences de la Nature/Centre de Recherche en Ecologie Universit6 d'Ab0bo-Adjam6 02 BP 801 Abidjan 02 C6te d'Ivoire Mus6e royal de l'Afrique centrale Leuvensesteenweg 13 B-3080 Tervuren Belgium Swedish University of Agricultural Sciences (SLU) Dept. of Ecology EO.Box 7044 SE-750 07 Uppsala Sweden CIAT-TSBF Institut d'Economie Rurale CRRA de Sotuba Laboratoire Sol-Eau-Plante c/o Icraf Sahel BPE 5118 Bamako Mali Universite Catholique de Louvain Biodiversity Research Center Earth and Life Institute Place Croix du Sud 4 B-1348 Lou-vain-la-Neuve Belgium

This study aims to assess the impact of monospecificTectona grandisforest plantation on the soil mite abundance and diversity. To achieve these objectives, two sites situated in Ivory Coast were investigated. The first, a primary forest was characterized by a very weak human activities whereas the second, a teak plantation was characterized by a high disturbance performed during the planting. After extracting, sorted and description, 116 mite species were described in the two sites. Mite densities were lower in teak plantation and also higher in the litter and decreased to the depth in both sites. Species richness recorded in teak plantation (52 species) was significantly lower compared to primary forest (98 species). The same trend was observed for Oribatida but not for Gamasida. The lower Oribatida (5 vs. 17) and higher Oribatida (24 vs. 41) were recorded respectively in teak plantation and primary forest. Mite Shannon index and evenness were significantly different between sites. High Jaccard index values and the appearance of exclusive species in both habitats showed that the sites are very distinct. Total number of species recorded corresponded to 58%–63% of the total number of species estimated by ACE and Chao 1&2 estimators, indicating that the sampling effort was not sufficient. Mite abundance and diversity varied depending on the characteristics of habitats. Chemical element (Corg, Ctot, Ntot, and SOM) values were lower in teak plantation (disturbed habitat) and significantly different to primary forest in the topsoil. Apart from litter height, soil depth, pH and C/N ratio, others variables were strongly correlated to mite abundance and diversity.

关键词：土壤螨类象牙海岸人工林多样性柚木异性丰度物种丰富度

Single Crystal Fibers:Diversified Functional Crystal Material

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Advanced Fiber Materials 2019年第3期1卷 163-187页

作者： Tao Wang Jian Zhang Na Zhang Siyuan Wang Baiyi Wu Na Lin Peter Kusalik Zhitai Jia Xutang Tao State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100People’s Republic of China Key Laboratory of Functional Crystal Materials and Device Ministry of EducationJinan 250100China Department of Chemistry University of CalgaryCalgaryAB T2N 1N4Canada Key Laboratory of Functional Crystals and Laser Technology TIPCCASBeijing 100190China

Single crystal fibers(SCF)are considered to be a combination of bulk crystals and conventional fibers,thereby possessing the stable physical and chemical properties accompanied with excellent waveguide *** paper gives a detailed introduction to the development history of single crystal fibers,including the evolution of the growth technique and the optimization of the growth ***-heated pedestal growth(LHPG)and Micro-pulling-down(μ-PD)methods are considered to be the most widely used growth techniques for growing single crystal fibers,and the advantages of the two methods are also introduced in *** second part of this paper describes the characterization of single crystal fibers,including diameter fluctuation,crystal quality and optical losses.A series of cladding approaches for SCF,such as magnetron sputtering,sol-gel,liquid phase epitaxy,co-drawing LHPG,ion implantation and micro-structure cladding will be *** addition,the research status of single crystal fiber laser and single crystal fiber sensor are also summarized in view of the current research foundation.

关键词： Single crystal fibers LHPG μ-PD Characterization method Cladding approaches Single crystal fiber laser Single crystal fiber sensor

Isolation and Characterization of Multipotent and Pluripotent Stem Cells from Human Peripheral Blood

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Stem Cell Discovery 2015年第3期5卷 19-32页

作者： Ciro Gargiulo Van Hung Pham Nguyen Thuy Hai Kieu C. D. Nguyen Pham Van Phuc Kenji abe Veronica Flores Melvin Shiffman Division of Internal Medicine The Human Medicine International Clinic Ho Chi Minh City Vietnam Molecular Diagnostics Department Nam Khoa-Biotek Laboratory Ho Chi Minh City Vietnam Division of Pathology The Human Medicine International Clinic Ho Chi Minh City Vietnam Department of Stem Cells and Regenerative Medicine University of Natural Science Ho Chi Minh City Vietnam Department of Pathology National Institute of Infectious Diseases Tokyo Japan sol Price School of Public Policy University of Southern California Los Angeles USA Section of Surgery Newport Specialty Hospital Tustin USA

Stem cells are commonly classified based on the developmental stage from which they are isolated, although this has been a source of debate amongst stem cell scientists. A common approach classifies stem cells into three different groupings: Embryonic Stem Cells (ESCs), Umbilical Cord Stem Cells (UCBSCs) and Adult Stem Cells (ASCs), which include stem cells from bone marrow (BM), fat tissue (FT), engineered induced pluripotent (IP) and peripheral blood (PB). By definition stem cells are progenitor cells capable of self-renewal and differentiation hypothetically “ab infinitum” into more specialized cells and tissue. The main intent of this study was to determine and characterize the different sub-groups of stem cells present within the human PB-SCs that may represent a valid opportunity in the field of clinical regenerative medicine. Stem cells in the isolated mononucleated cells were characterized using a multidisciplinary approach that was based on morphology, the expression of stem cell markers by flowcytometry and fluorescence analysis, RT-PCR and the capacity to self-renew or proliferate and differentiate into specialized cells. This approach was used to identify the expression of hematopoietic, mesenchymal, embryonic and neural stem cell markers. Both isolated adherent and suspension mononucleated cells were able to maintain their stem cell properties during in-vitro culture by holding their capacity for proliferation and differentiation into osteoblast cells, respectively, when exposed to the appropriate induction medium.

关键词： Human Peripheral Blood Stem Cells Mesenchymal Stem Cells Hematopoietic Stem Cells Embryonic Stem Cells Neural Stem Cells