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Current Trend in Synthesis,Post-Synthetic Modifications and Biological Applications of Nanometal-Organic Frameworks(NMOFs)

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Chinese Journal of Chemistry 2019年第4期37卷 378-404页

作者： Ebenezer Baa Gary M.watkins Rui.w.Krause Derek.N.Tantohb Department of Chemistry Rhodes UniversityPO Box 94Grahamstown6140South Africa Department of Applied Chemistry University of JohannesburgPO Box 524Auckland Park2006South Africa

Since the early reports of MOFs and their interesting properties,research involving these materials has grown wide in scope and *** synthetic approaches have ensued in view of obtaining materials with optimised properties,the extensive scope of application spanning from energy,gas sorption,catalysis biological applications has meant exponentially evolved over the *** far-reaching synthetic and PSM approaches and porosity control possibilities have continued to serve as a motivation for research on these *** respect to the biological applications,MOFs have shown promise as good candidates in applicati ons involving drug delivery,BioMOFs,sensing,imaging amongst *** being a while away from successful entry into the market,observed results in sensing,drug delivery,and imaging put these materials on the spot light as candidates poised to usher in a revolution in *** this regard,this review article focuses current approaches in synthesis,post functionalization and biological applications of these materials with particular attention on drug delivery,imaging,sensing and BioMOFs.

关键词： Current Trend Post-Synthetic Modifications Nanometal-Organic Frameworks(NMOFs)

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水泥碳汇核算及其对中国碳中和的贡献

中国科学：地球科学 2024年第6期54卷 2086-2097页

作者：马铭婧黄子王娇月牛乐张文凤徐晓伟郗凤明刘竹中国科学院沈阳应用生态研究所沈阳110016 中国科学院大学北京100049 清华大学地球系统科学系北京100084 Department of Engineering Science University of OxfordOxfordOX13UK

水泥是全球用量最高、用途最广的建筑材料之一,同时水泥生产也是人为活动碳排放的重要来源之一.水泥材料中的碱性化合物能缓慢吸收周围环境中的CO_(2)发生碳化反应,形成特殊的碳汇效应.中国是水泥生产与消费大国,科学系统核算中国水泥... 详细信息

水泥是全球用量最高、用途最广的建筑材料之一,同时水泥生产也是人为活动碳排放的重要来源之一.水泥材料中的碱性化合物能缓慢吸收周围环境中的CO_(2)发生碳化反应,形成特殊的碳汇效应.中国是水泥生产与消费大国,科学系统核算中国水泥碳汇量并明确其对碳中和的贡献值得深入探讨.通过构建水泥全生命周期碳汇核算综合分析模型,发现1930~2021年中国水泥碳汇量不断增长,到2021年高达426.77Mt CO_(2)(95%置信区间CI:317.67~874.33Mt CO_(2)),相当于中国年陆地碳汇的8.10%~45.40%,全球陆地碳汇的2.51%~4.54%,是全球碳循环中不可忽视的重要因素.在此期间,水泥的累积碳吸收量约为7.06Gt CO_(2)(95%CI:5.22~9.44Gt CO_(2)),抵消了同期水泥工业过程排放(13.91Gt CO_(2), 95%CI:12.44~17.00Gt CO_(2))的50.7%.其中,水泥砂浆对碳吸收贡献最大,占总量的65.64%.从生命周期的角度看,使用阶段的水泥材料碳吸收量占比最高(90.03%).水泥碳汇核算模型不仅提高了水泥行业碳核算的准确性,而且为中国乃至全球碳中和评估提供了科学依据.水泥材料及其废弃物的未来吸收潜力巨大,应进一步加强水泥材料的生态效益,加速水泥及其废弃物的CO_(2)封存技术研发和产业化进程,助力中国早日实现碳中和目标.

关键词：水泥碳汇生命周期评价碳减排碳中和

Viral vector platforms within the gene therapy landscape

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Signal Transduction and Targeted Therapy 2021年第3期6卷 664-687页

作者： Jote T.Bulcha Yi wang Hong Ma Phillip w.L.Tai Guangping Gao Horae Gene Therapy Center University of Massachusetts Medical SchoolWorcesterMAUSA Department of Microbiology and Physiological Systems University of Massachusetts Medical SchoolWorcesterMAUSA Department of Pathophysiology West China College of Basic medical sciences&Forensic MedicineSichuan UniversityChengduChina VIDE Program University of Massachusetts Medical SchoolWorcesterMAUSA Li weibo Institute for Rare Diseases Research University of Massachusetts Medical SchoolWorcesterMAUSA

Throughout its 40-year history,the field of gene therapy has been marked by many *** has seen great strides in combating human disease,has given hope to patients and families with limited treatment options,but has also been subject to many *** of patients with this class of investigational drugs has resulted in severe adverse effects and,even in rare cases,*** the heart of this dichotomous field are the viral-based vectors,the delivery vehicles that have allowed researchers and clinicians to develop powerful drug platforms,and have radically changed the face of *** the past 5 years,the gene therapy field has seen a wave of drugs based on viral vectors that have gained regulatory approval that come in a variety of designs and purposes,these modalities range from vector-based cancer therapies,to treating monogenic diseases with life-altering *** present,the three key vector strategies are based on adenoviruses,adeno-associated viruses,and *** have led the way in preclinical and clinical successes in the past two ***,despite these successes,many challenges still limit these approaches from attaining their full *** review the viral vector-based gene therapy landscape,we focus on these three highly regarded vector platforms and describe mechanisms of action and their roles in treating human disease.

关键词： drugs landscape approval

Synthesis,structure and luminescence properties of KEu_(0.01)Gd_(0.19)Yb_(0.8)(wO_4)_2 powder

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Journal of Rare Earths 2009年第4期27卷 564-568页

作者： A.Lukowiak R.J.wiglusz R.Pazik K.Lemanski w.Strek Institute of Low Temperature and Structure Research Polish Academy of Sciences

The synthesis of co-doped KEu0.01Gd0.19Yb0.8（wO4）2 was achieved by a modified Pechini method at 750℃. The structure of obtained compound was confirmed using X-ray diffraction measurement and Raman spectroscopy. The Scherrer＇s formula was used to confirm the grain sizes visualized by TEM technique. The grain sizes of about 100 nm of monoclinic KGw were successfully obtained by this meth- odology. In order to study spectroscopic properties of the prepared system the emission spectra were measured. The effective down- and up-conversion processes in non-resonant system were investigated.

关键词： sol-gel method tungstates doped by rare earth ions nanoctystals spectroscopy rare earths

Transcriptomic and proteomic analysis of Locusta migratoria eggs at different embryonic stages: Comparison for diapause and non-diapause regimes

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Journal of Integrative Agriculture 2017年第8期16卷 1777-1788页

作者： HAO Kun wANG Jie TU Xiong-bing Douglas w.whitman ZHANG Ze-hua State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences School of Biological Sciences Illinois State University

Temperate-zone insects typically survive winter by entering diapause. Although many aspects of insect diapause have been studied, the underlying molecular mechanism of insect diapause is not well understood. Here we report the results of the transcriptional and translational differences of migratory locust eggs at different embryonic states using diapause （low temperature） and non-diapause （high temperature） regimes. Compared with non-diapause eggs at 100 degree-days （N2） treatment, 29671 transcripts and 296 proteins were differentially expressed at the diapause maintenance stage （D2）. while compared with 150 degree-days （N3） treatment, 45 922 transcripts and 404 proteins were differentially expressed in the post-diapause stage （D3）. Among them, 51 and 102 transcripts had concurrent transcription and translation profiles in D2 vs. N2 and D3 vs. N3 treatments, respectively. Analysis of Gene Ontology categorized these genes and proteins into three categories： biological processes, cellular components, and molecular functions. Biological pathway analysis indicat- ed that three pathways：（1） insect hormone biosynthesis （KEGG： Map 00981）, （2） the insulin signaling pathway （KEGG： Map 04910）, and （3） the peroxisome proliferator-activated receptor （PPAR） signaling pathway （KEGG： Map 03320） play an important role in locust diapause regulation. Most of these transcripts and proteins were up-regulated in the diapause treatments, and were highly linked to juvenile hormone biosynthesis, insulin and PPAR signaling pathways, suggesting these three pathways may be Jnvolved Jn diapause and development regulation. This study demonstrates the applicability of high-throughput omics tools to identify biochemical pathways linked to diapause in locust egg development. In addition, it reveals that cellular metabolism in diapause eggs is more inactive than in non-diapause eggs, and most of the down-reg- ulated enzymes and pathways are related to reduce energy loss.

关键词： Locusta migratoria diapause transcriptome proteome molecular mechanism

Graphene Oxide-Based Q-Switched Erbium-Doped Fiber Laser

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Chinese Physics Letters 2013年第2期30卷 124-127页

作者： Y.K.Yap N.M.Huang S.w.Harun H.Ahmad Photonics Research Centre Department of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Low Dimensional Materials Research Centre Department of PhysicsFaculty of ScienceUniversity of Malaya50603 Kuala LumpurMalaysia Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya50603 Kuala LumpurMalaysia Nanotechnology Research Alliance Universiti Teknologi Malaysia81310 UTMJohore BahruJohor Darul TakzimMalaysia

we demonstrate a pulsed ring erbium-doped fiber laser based on graphene oxide(GO),employing a simplified Hummer's method to synthesize the GO via chemical oxidation of graphite flakes at room *** dipping a fiber ferrule end face onto the GO suspension,GO is successfully coated onto the end face,making it a simple saturable absorption device.A stable Q-switched pulsed fiber laser is achieved with a low pump threshold of 9.5 mw at 980 *** pulse repetition rate ranges from 16.0 to 57.0 *** pulse width and the pulse energy are studied and discussed.

关键词： temperature. fiber pulse

Optical Absorption Characterizations of Porous Al_2O_3Host/NiO Nanocomposites

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Journal of Materials Science & Technology 1997年第5期13卷 435-439页

作者： Cai w. Mo C. Zhang L. Li Y. Yao L. Dept. of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China

Porous Al2O3 host/NiO nanocomposites have been prepared by pyrolysis of Ni2(OH)2CO3 inthe nanostructured Al2O3 hosts. Diffuse reflection spectra in the wavelength range of 200 to800 nm were measured. Results show that (1) in each spectrum exist several absorption bandsof nano-NiO. with increasing the pyrolysis temperature from 550 to 1000℃, the numbers ofabsorption bands of NiO increase from 2 to 6 (P1-P6), (2) comparing with optical absorptionbands of single crystal NiO, for porous nanocomposites the P1, P2 and P4 present 'blue shift'and the P3, P5 and P6 exhibit 'red shift'; (3) when the pyrolysis temperature, Tp, is 550℃, theabsorption bands become so weak that only two bands (P1 and P6) can be observed and inverselywhen Tp=1000℃ all six absorption bands of NiO are strong, (4) for porous Al2O3/NiOnanocomposites prepared by pyrolysis at 1000℃ the PF+ caused by the F+ centers in theAl2O3 host moves towards the short wavelength at first with increasing the doping amount ofNiO from 5 to 50 wt pct and then shifts to the long wavelength with further increasing NiO. Inthis paper, the above phenomena and mechanism of the absorption bands of NiO are discussedin detail.

关键词： Nanostructured materials

Historical trends of degradation,loss,and recovery in the tropical forest reserves of Ghana

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International Journal of Digital Earth 2022年第1期15卷 30-51页

作者： michael C.wimberly Francis K.Dwomoh Izaya Numata Foster Mensah Jacob Amoako Dawn M.Nekorchuk Andrea McMahon Department of Geography and Environmental Sustainability University of OklahomaNormanOKUSA Department of Geography and Geospatial Sciences South Dakota State UniversityBrookingsSDUSA Centre for Remote Sensing and Geographic Information Services University of GhanaAccraGhana The Forestry Commission of Ghana AccraGhana

The Upper Guinean Forest region of west Africa,a globally significant biodiversity hotspot,is among the driest and most human-impacted tropical *** used Landsat to study forest degradation,loss,and recovery in the forest reserves of Ghana from 2003 to *** canopy cover maps were generated using random forests and results were temporally segmented using the LandTrendr *** cover was predicted with a predicted-observed r2 of 0.76,mean absolute error of 12.8%,and mean error of 1.3%.Forest degradation,loss,and recovery were identified as transitions between closed(>60%cover),open(15–60%cover)and low tree cover(was relatively slow from 2003 to 2015,but there was more disturbance than recovery resulting in a gradual decline in closed canopy *** 2016,widespread fires associated with El Niño drought caused forest loss and degradation across more than 12%of the moist semi-deciduous and upland evergreen forest *** workflow was implemented in Google Earth Engine,allowing stakeholders to visualize the results and download *** about historical disturbances will help to prioritize locations for future studies and target forest protection and restoration activities aimed at increasing resilience.

关键词： Landsat random forests machine learning time series LandTrendr drought wildfire

A generalized framework for AMOVA with multiple hierarchies and ploidies

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Integrative Zoology 2021年第1期16卷 33-52页

作者： Kang HUANG Tiantian wANG Derek w.DUNN Pei ZHANG Hongjuan SUN Baoguo LI Shaanxi Key Laboratory for Animal Conservation College of Life SciencesNorthwest UniversityXi’anChina Department of Forest and Conservation Sciences University of British ColumbiaVancouverCanada Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingChina

The analysis of molecular variance(AMOVA)is a widely used statistical method in population genetics and molec-ular *** classic framework of AMOVA only supports haploid and diploid data,in which the number of hierarchies ranges from two to *** practice,natural populations can be classified into more hierarchies,and polyploidy is frequently observed in extant *** ploidy level may even vary within the same species,and/or within the same *** generalized the framework of AMOVA such that it can be used for any number of hierarchies and any level of *** on this framework,we present four methods to account for data that are multilocus genotypic and allelic phenotypic(with unknown allele dosage).we use simulated datasets and an empirical dataset to evaluate the performance of our *** make freely available our methods in a new software package,polygene,which is freely available at https://***/huangkang1987/polygene.

关键词： analysis of molecular variance hierarchy maximum-likelihood estimation method-of-moment estimation polyploidy