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Old-growth mixed dipterocarp forests show variable losses and gains in aboveground biomass and standing carbon over forty years

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Forest Ecosystems 2024年第1期11卷 14-23页

作者： Sisira Ediriweera Champika Bandara Tithira Lakkana Shanika Jayasinghe David Woodbury Arun Dayanandan B.m.P.Singhakumara Xiangcheng mi I.A.U.N.Gunatilleke C.V.S.Gunatilleke mark SAshton Department of Science and Technology Uva Wellassa UniversityBadullaSri Lanka The Forest School Yale School of the EnvironmentYale UniversityNew HavenCT06511USA Department of Forestry and Environmental Science University of Sri JayewardenepuraNugegodaSri Lanka State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing100093China Botany Department University of PeradeniyaPeradeniyaSri Lanka

Background:No studies have documented long-term trends in aboveground biomass(AGB)for mixed-dipterocarp forests(mDF),the dominant rain forest type in tropical wet equatorial *** our study,we sought to document such trends over forty years across three sites representing lowland to lower montane ***:To do this,we established fifty 100 m×25 m plots in 1978 across three sites sampled along an elevation gradient,identified as mature old-growth *** measured trees for diameter at breast height that we identified to species and *** took wood samples to calculate species wood-specific *** re-measured plots in 1998 and again in ***:We show standing AGB for all sites combined to be 517.52 mg·ha^(-1)in 1978,but this declined by 17%over 40 years to 430.11 mg·ha^(-1).No differences exist among sites in AGB primarily because of considerable within site variation;but interactions of time with site show declines across sites were not uniform,one remained about the *** few species represented a high proportion of the AGB with the top five species comprising between 34%and 65%,depending upon site and year *** species,mesua nagassarium,represented a disproportionately large amount of AGB and decline over time,particularly at the low elevation ***:Our results are directly relevant to estimating AGB and standing carbon sequestered in *** study is the first to demonstrate varying but overall,declining trends in amounts of AGB among forests making predictions of biomass and standing carbon in mDF difficult over wide regions.

关键词： Western ghats Shorea spp. Southeast Asia Sri Lanka Tropical rain forest Wood specific gravity

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可再生高强度纤维素基包装材料制备及其智能化应用

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中国造纸 2024年第7期43卷 149-159页

作者：王笑刘哈王月莹赵玉李新才王宝斌杨桂花陈嘉川齐鲁工业大学(山东省科学院)生物基材料与绿色造纸国家重点实验室山东济南250353

本研究提出了一种高强度可降解纤维素基复合打包带替代传统聚乙烯打包带的可靠策略,采用离子液体溶解制备再生纤维素材料,探讨了石墨烯对其导电性和机械性能的影响,从而制备高强度新型可再生复合打包带,并初步探索了其在智能包装领域的... 详细信息

本研究提出了一种高强度可降解纤维素基复合打包带替代传统聚乙烯打包带的可靠策略,采用离子液体溶解制备再生纤维素材料,探讨了石墨烯对其导电性和机械性能的影响,从而制备高强度新型可再生复合打包带,并初步探索了其在智能包装领域的应用前景。结果表明,纤维素含量5%时,制得的再生纤维素丝和再生纤维素膜的拉伸强度分别可达194和74 kPa;双层打包带的最大应力可达26.3 mPa;再生纤维素打包带对于环境湿度和压力变化响应灵敏且具有良好的抗水性和生物降解性;纤维素和石墨烯质量比为1∶1时,纤维素/石墨烯复合材料电导率达0.8 S/m。

关键词：离子液体再生纤维素智能包装石墨烯

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Influence of anodization conditions on deposition of Hydroxyapatite on α/β Ti alloys for Osseointegration: Atomic Force microscopy Analysis

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Transactions of Nonferrous metals Society of China 2024年

作者： Rania E.hammam Engie m.Safwat Soha A.Abdel-Gawad madiha Shoeib Shimaa El-hadad Faculty of Engineering， modern University for Technology and Information (mTI) Restorative and Dental materials Department， National Research Centre Giza Chemistry Department， Faculty of Science， Cairo University Central metallurgical Research and Development Institute P.O.87

Integrating titanium-based implants with the surrounding bone tissue remains challenging. This study aims to explore the impact of different anodization voltages （20-80V） on the surface topography of two-phase （α/β） Ti alloys and to produce TiO2films with enhanced bone formation abilities. Scanning electron microscopy coupled with energy dispersive spectroscopy （SEm-EDS） and atomic force microscopy （AFm） were applied to investigate the morphological， chemical， and surface topography of the prepared alloys and to confirm the growth of hydroxyapatite （ha） on their surfaces. Results disclosed that the surface roughness of TiO2films formed on Ti-6Al-7Nb alloys was superior to that of Ti–6Al–4V alloys. Ti-6Al-7Nb alloy anodized at 80 V had the highest yields of ha after immersion in SBF with enhanced ha surface coverage. The developed ha layer had a mean thickness of 128.38 ± 18.13 μm， suggesting its potential use as an orthopedic implantable material due to its promising bone integration and， hence， remarkable stability inside the human body.

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Biocompatibility evaluation in vitro. Part II: Functional expression of human and animal osteoblasts on the biomaterials

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Journal of Central South University of Technology 2001年第2期8卷 75-82页

作者： RUAN Jian ming 1,GRANT m. Helen 2 (1.State Key Laboratory for Powder metallurgy, Central South University, Changsha 410083, China 2.Bioengineering Unit, Strathclyde University, Glasgow, G4 0NW, UK) State Key Laboratory for Powder metallurgy Central South University Changsha China Bioengineering Unit Strathclyde University Glasgow UK

DNA synthesis and collagen formations on the implant material by cell culture in vitro are the most important phenotypical expression to estimate the biocompatibility. In this part, DNA synthesis and collagen formation on implant materials were quantitatively and qualitatively estimated by radioactive isotope H + thymidine to incorporate into DNA chains, H + proline to incorporate into type I collagen proteins followed by scin tillation counting and antibody antigen immunocytochemistry staining, respectively. Research results demonstrate that hydroxyapatite (ha) stimulates DNA synthesis and collagen formation on the material whereas this stimulation is restricted by adding spinel to the materials. There are statistical differences between the influences of material components on both DNA synthesis and collagen formation. It is supposed that porous materials can supply more platforms for cell anchoring, and more DNA and collagen are synthesised on the porous materials. Immersion in culture medium results in new ha crystal formation on the porous ha materials.

关键词： biocompatibility DNA synthesis collagen protein incorporation

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Analysis of a Triose Phosphate/Phosphate Translocator- Deficient mutant Reveals a Limited Capacity for Starch Synthesis in Rice Leaves

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molecular Plant 2014年第11期7卷 1705-1708页

作者： Sang-Kyu Lee Joon-Seob Eom Lars m. Voll Christian m. Prasch Youn-ll Park Tae-Ryong hahn Sun-Hwa ha GynheungAn Jong-Seong Jeon Graduate School of Biotechnology Kyung Hee University Yongin 446-701 Korea Crop Biotech Institute Kyung Hee University Yongin 446-701 Korea Plant metabolism Research Center Kyung Hee University Yongin 446-701 Korea Friedrich-Alexander Universitat Erlangen-Nurnberg Lehrstuhl fur Biochemie Staudtstrasse 5 D-91058 Erlangen Germany Department of Biology Chungnam National University Daejeon 305-764 Korea Department of Plant molecular Systems Biotechnology Kyung Hee University Yongin 446-701 Korea

Dear Editor, During CO2 assimilation, the reductive pentose phos- phate cycle generates triose phosphates （triose-P） at the expense of ATP and NADPH generated by photosynthetic light reactions. Triose-P is retained within chloroplasts to either regenerate the CO2 acceptor ribulose-l,5-bi- sphosphate or to feed into transitory starch synthesis. Alternatively, triose-P can be exported into the cytosol to produce sucrose. To maintain optimum rates of photo- synthesis, the rate of triose-P export from the chloroplast stroma to the cytosol is necessarily adjusted to the demands for photoassimilate export. The triose-P/phosphate （Pi） translocator （TPT） mediates the export of stromal triose-P into the cytosol in a counter exchange for cytosolic Pi.

关键词： PHOTOSYNTHETIC SUCROSE SYNTHESIS TRANSGENIC POTATO PLANTS CYTOSOLIC FRUCTOSE-1,6-BISPHOSPhaTASE ARABIDOPSIS-ThaLIANA GROWTH BIOSYNTHESIS LACKING

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Development of seeder for mixed planting of corn and soybeans

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 95-101页

作者： Seung min Woo Daniel Dooyum Uyeh moon Sang Sagong Yu Shin ha Department of Bio Industrial machinery Engineering Kyungpook National UniversityDaegu 41566Korea

Corn and soybeans should be sown between 5 cm and 10 cm apart in mixed cultivation to increase protein content and improve productivity of the ***,existing sowers cannot plant at intervals of less than 20 ***,mixed cultivation of corn and soybeans is currently performed by first sowing corn seeds with a tractor and then manually planting soybean *** method results in irregular intervals between the seeds,it is laborious and time *** study aimed at developing a seeder that can simultaneously,precisely and efficiently plant corn and *** geometrical and rheological properties of corn and soybeans were initially *** seed conveying equipment were designed using the EDEm *** sowing interval between seeds,depth of soil over planted seed,and sowing performance were *** EDEm simulation results indicated that a 6-mm-wide and 3-mm-deep grooved seed-delivering roller had the highest particle mobility of the designs considered,with a 2.5%misplanting rate.A performance test showed that no misplanting occurred in the sections sowed with soybean seeds at a seeding interval that averaged 32 mm(321 seeds sown in 10 m)and that misplanting occurred in one section sowed with corn at a seeding interval that averaged 247 mm(40 seeds sown over 10 m).The sowing efficiency for both corn and soybeans was found to be 0.42 h/*** average depth of soil over seed was 32.7 mm for soybean and 39.7 mm for *** average depths are within the stipulated range for the depth of soil over seed,which is 5 to 10 times the seed *** study developed an efficient seeding machine that can simultaneously plant soybean and corn precisely,consequently improving forage yield and saving man-hours.

关键词： corn geometric characteristics mixed planting seeder soybean

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Engineering hyaluronic acid-based nanoassemblies for monoclonal antibody delivery-design,characterization,and biological insights

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Nano Research 2024年第10期17卷 9111-9125页

作者： Ana m.López-Estévez Y.Zhang maría medel Iker Arriaga Lucía Sanjurjo Cristian Huck-Iriart Nicola G.A.Abrescia maría J.Vicent Defang Ouyang Dolores Torres maría José Alonso Center for Research in molecular medicine and Chronic Diseases(CimUS) University of Santiago de CompostelaSantiago de Compostela 15782Spain Department of Pharmacology Pharmacy and Pharmaceutical TechnologySchool of PharmacyUniversity of Santiago de CompostelaSantiago de Compostela 15782Spain Health Research Institute of Santiago de Compostela(IDIS) Santiago de Compostela 15782Spain State Key Laboratory of Quality Research in Chinese medicine Institute of Chinese Medical Sciences(ICMS)University of MacaoMacao 999078China Polymer Therapeutics Laboratory and CIBERONC Prince Felipe Research Centre Valencia E-46012Spain Structure and Cell Biology of Viruses Lab CIC bioGUNEBasque Research and Technology Alliance(BRTA)Derio 48160Spain ALBA Synchrotron Light Source Experiments DivisionCerdanyola del VallèsBarcelona 08290Spain IKERBASQUE Basque Foundation for ScienceBilbao 48009Spain

The current spotlight of cancer therapeutics is shifting towards personalized medicine with the widespread use of monoclonal antibodies(mAbs).Despite their increasing potential,mAbs have an intrinsic limitation related to their inability to cross cell membranes and reach intracellular *** offers promising solutions to overcome this limitation,however,formulation challenges *** challenges are the limited loading capacity(often insufficient to achieve clinical dosing),the complex formulation methods,and the insufficient characterization of mAb-loaded ***,we present a new nanocarrier consisting of hyaluronic acid-based nanoassemblies(haNAs)specifically designed to entrap mAbs with a high efficiency and an outstanding loading capacity(50%,w/w).haNAs composed by an mAb,modified ha and phosphatidylcholine(PC)resulted in sizes of~100 nm and neutral surface *** modeling identified the principal factors governing the high affinity of mAbs with the amphiphilic ha and *** composition and structural configuration were analyzed using the orthogonal techniques cryogenic transmission electron microscopy(cryo-TEm),asymmetrical flow field-flow fractionation(AF4),and small-angle X-ray scattering(SAXS).These techniques provided evidence of the formation of core-shell nanostructures comprising an aqueous core surrounded by a bilayer consisting of phospholipids and amphiphilic *** vitro experiments in cancer cell lines and macrophages confirmed haNAs’low toxicity and ability to transport mAbs to the intracellular *** reproducibility of this assembling process at industrial-scale batch sizes and the long-term stability was *** conclusion,these results underscore the suitability of haNAs technology to load and deliver biologicals,which holds promise for future clinical translation.

关键词： monoclonal antibody nanoparticles hyaluronic acid characterization particle size computational modeling

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可见近红外宽波段复消色差高光谱物镜设计

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激光与红外 2018年第3期48卷 384-388页

作者：桂立丁学专赵航斌郝世菁姚金军刘银年中国科学院红外探测与成像技术重点实验室中国科学院上海技术物理研究所上海200083 中国科学院大学北京100049 中国科学院上海技术物理研究所启东光电遥感中心江苏启东226200

为满足高光谱成像仪在365~1000 nm波段范围的成像需求,设计了一款中等视场角、大相对孔径的复消色差物镜。从初级色差理论出发,分析了可见近红外波段的玻璃材料的色散特性,为光学设计选择玻璃材料提供了理论依据。设计结果表明:通过对... 详细信息

为满足高光谱成像仪在365~1000 nm波段范围的成像需求,设计了一款中等视场角、大相对孔径的复消色差物镜。从初级色差理论出发,分析了可见近红外波段的玻璃材料的色散特性,为光学设计选择玻璃材料提供了理论依据。设计结果表明:通过对低色散氟冕玻璃的合理使用,物镜在宽波段内的色差得到了良好校正,二级光谱仅为0.014 mm。物镜焦距18 mm,相对孔径1∶2.4,视场角30°,成像质量接近衍射极限,满足高光谱成像仪的设计要求。

关键词：光学设计二级光谱像方远心高光谱

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Design of 32 kbit one-time programmable memory for microcontroller units

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Journal of Central South University 2012年第12期19卷 3475-3483页

作者： JEON Hwang-gon CHOI In-hwa ha Pan-bong KIm Young-hee Department of Electronic Engineering Changwon National University9 Sarim-DongChangwon 641-773Korea

A 32 kbit OTP(one-time programmable)memory for mCUs(micro-controller units)used in remote controllers was *** OTP memory is used for program and data *** is required to apply 5.5V to BL(bit-line)and 11V to WL(word-line)for a OTP cell of 0.35μm ETOX(EEPROm tunnel oxide)type by *** use 5V transistors on column data paths to reduce the area of column data paths since they require small *** addition,we secure device reliability by using HV(high-voltage)transistors in the WL ***,we change from a static logic to a dynamic logic used for the WL driver in the core ***,we optimize the WD(write data)switch ***,we can implement them with a small-area *** addition,we implement the address predecoder with a small-area logic *** area of the designed 32 kbit OTP with 5V and HV devices is 674.725μm×258.75μm(=0.1745mm2)and is 56.3% smaller than that using 3.3V devices.

关键词： one-time programmable memory micro controller unit EEPROm tunnel oxide small-area

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松果菊苷对db/db糖尿病心肌病小鼠心肌细胞凋亡的改善作用

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医学研究杂志 2023年第8期52卷 88-93页

作者：张祥郝亚荣武汉大学人民医院老年病科 430060

目的探讨肉苁蓉提取物松果菊苷(echinacoside,ECH)对db/db糖尿病心肌病小鼠心肌细胞的保护作用及其作用机制。方法选取29只SPF级6周龄雄性db/db小鼠和db/m小鼠适应性饲养1周后,按照随机数字表法取9只db/m小鼠作为正常对照组(db/m组,n=9)... 详细信息

目的探讨肉苁蓉提取物松果菊苷(echinacoside,ECH)对db/db糖尿病心肌病小鼠心肌细胞的保护作用及其作用机制。方法选取29只SPF级6周龄雄性db/db小鼠和db/m小鼠适应性饲养1周后,按照随机数字表法取9只db/m小鼠作为正常对照组(db/m组,n=9),将db/db小鼠分为糖尿病心肌病组(db/db组,n=10)与ECH干预组(db/db+ECH组,n=10)。其中db/db组和db/m组小鼠每日按照0.05ml/10g标准行0.9%氯化钠溶液灌胃10周。db/db+ECH组小鼠按ECH 300mg/(kg·d)灌胃10周。每周监测3组的小鼠体质量,观察小鼠摄食、饮水及活动情况。于鼠龄第18周用2%戊巴比妥钠腹腔注射麻醉小鼠并处死,取尾静脉血测定空腹血糖和血脂。采用苏木精-伊红(hematoxylin eosin,HE)染色观察心肌组织病理改变,采用TUNEL染色法测定心肌细胞凋亡率,采用Western blot法检测凋亡相关蛋白p53、p38mAPK、caspase-3和caspase-8的表达水平,采用实时荧光定量聚合酶链反应(real-time quantitative polymerase chain reaction,RT-qPCR)测定心肌细胞p53m RNA、p38mAPK mRNA和caspase mRNA、Bcl-2mRNA、Bax mRNA的表达水平。结果与db/m组比较,db/db组小鼠的体质量、血糖和血脂水平显著升高(Pm组比较,db/db组小鼠的心肌细胞可见明显肥大、坏死,心肌细胞排列结构紊乱;而db/db+ECH组小鼠的心肌细胞形态有所缓解,细胞间隙减少,排列较规则。TUNEL染色结果显示,与db/m组比较,db/db组小鼠的心肌细胞凋亡程度显著增高(PmAPK蛋白、caspase-3和caspase-8蛋白表达量显著升高(PmRNA、p38mAPK mRNA和caspase mRNA、Bax mRNA表达量明显上升,Bcl-2mRNA水平下调(PmAPK/caspase信号通路有关。

关键词：松果菊苷糖尿病心肌病凋亡 p53 p38mAPK

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