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| 1 | Recent research and progress of biodegradable zinc alloys and composites for biomedical applications: Biomechanical and biocorrosion perspectives显示文摘Biodegradable metals(BMs)gradually degrade in vivo by releasing corrosion products once exposed to the physiological environment in the body.Complete dissolution of biodegradable implants assists tissue healing,with no implant residues in the surrounding tissues.In recent years,three classes of BMs have been extensively investigated,including magnesium(Mg)-based,iron(Fe)-based,and zinc(Zn)-based BMs.Among these three BMs,Mg-based materials have undergone the most clinical trials.However,Mg-based BMs generally exhibit faster degradation rates,which may not match the healing periods for bone tissue,whereas Fe-based BMs exhibit slower and less complete in vivo degradation.Zn-based BMs are now considered a new class of BMs due to their intermediate degradation rates,which fall between those of Mg-based BMs and Fe-based BMs,thus requiring extensive research to validate their suitability for biomedical applications.In the present study,recent research and development on Zn-based BMs are reviewed in conjunction with discussion of their advantages and limitations in relation to existing BMs.The underlying roles of alloy composition,microstructure,and processing technique on the mechanical and corrosion properties of Zn-based BMs are also discussed. | Humayun Kabir Khurram Munir Cuie Wen Yuncang Li | 2021 | Bioactive Materials2021，6，3： | 18 |
| 2 | 一个矮秆多分蘖水稻突变体的植物激素动态特性分析显示文摘【目的】比较水稻矮秆多分蘖突变体与野生型材料间的植物激素含量差异,并分析不同生长调节剂处理对其株高、分蘖的影响,探析植物激素在突变体形态发育过程中的生理功能。【方法】以T-DNA插入引起的矮秆多分蘖突变体(CA648)及对照中花11(ZH11)为供试材料,采用高效液相色谱法(HPLC)分析三叶期、五叶期、分蘖盛期、拔节孕穗期的根、假茎(或茎)、叶中的赤霉素(GA1,GA4)、生长素(IAA)、玉米素(Z)和脱落酸(ABA)的含量,进行CA648与ZH11在不同生长发育时期的不同器官中的植物激素含量差异比较分析;利用液相色谱-串联质谱联用法(HPLC-MS/MS)测定拔节孕穗期根、基部、茎秆及叶片中的IAA、Z及玉米素核苷(ZR)的含量并进行根、茎、叶等不同器官中IAA与Z+ZR含量间的比值差异分析;在CA648与ZH11的不同生长发育时期喷施不同浓度的GA3、IAA、Z及多效唑处理后统计株高、分蘖的变化特性,并比较分析CA648与ZH11对不同生长调节剂处理的反应敏感性差异。【结果】不同生长发育时期的CA648与ZH11的不同器官中的植物激素存在不同变化趋势。GA1+4含量变化情况为在三叶期和五叶期的叶片中两者相差不大,而根和假茎中的含量则是CA648高于ZH11;从五叶期至拔节期,随着生育期延长,ZH11的假茎和根中GA1+4含量升高而叶片中含量降低,但CA648却表现出相反的变化趋势,假茎和根中的GA1+4含量降低但叶片中含量却升高。IAA含量变化情况为五叶期、分蘖盛期时CA648叶片中的IAA含量低于ZH11,而假茎中的IAA含量却高于ZH11;拔节期时,CA648的根、茎、叶中IAA含量均与ZH11对应器官中的IAA含量相差不大。Z、ZR含量变化情况为三叶期CA648的根与假茎中的Z含量都低于ZH11;在拔节期,分蘖部位的基部和茎中的Z+ZR含量为CA648高于ZH11,而叶片中的Z+ZR含量却是CA648略低于ZH11。ABA含量变化情况为在三叶期、五叶期时CA648的ABA含量高于ZH11,而拔节期却显著低于ZH11。IAA与Z+ZR的比值情况为在顶叶、茎秆中是CA648大于ZH11,而在基部和根中则是CA648中的比值小于ZH11。不同浓度GA3、IAA、Z和多效唑喷施处理表明CA648的株高易受生长调节剂的影响。与喷水对照相比,喷施GA3、IAA、Z均能增加CA648的株高,其敏感性依次为GA3处理>IAA处理>Z处理;喷施多效唑后CA648与ZH11的株高均明显降低;虽然CA648与ZH11的株高均受GA3、多效唑等生长调节剂的影响,但CA648更敏感,当喷施的GA3浓度≥288μmol·L-1时,CA648的株高能够达到或超过ZH11的株高;与株高易受生长调节剂的影响不同,CA648的多分蘖特性几乎不受长调节剂处理的影响,无论是否喷施生长调节剂,CA648的分蘖数均远远多于ZH11。【结论】与对照相比,CA648体内的GA1、GA4、IAA、Z、ZR含量及其IAA与Z+ZR的比值有利于矮秆多分蘖性状的形成,即植物激素含量与比例能够反映CA648的生理特性;生长调节剂对CA648的分蘖与株高具有不同调控效果,喷施GA3、IAA、Z和多效唑能够显著改变株高,但其多分蘖特性不受株高改变的影响。 | 刘清 童建华 史齐 彭克勤 王若仲 蔺万煌 Mohammed Humayun Kabir 沈革志 萧浪涛 | 2014 | 中国农业科学2014，47，13： | 8 |
| 3 | The alteration in the architecture of a T-DNA insertion rice mutant osmtd1 is caused by up-regulation of Micro RNA156f显示文摘Plant architecture is an important factor for crop production. Some members of micro RNA156(mi R156) and their target genes SQUAMOSA Promoter-Binding Protein-Like(SPL) were identi fi ed to play essential roles in the establishment of plant architecture. However, the roles and regulation of mi R156 is not well understood yet. Here, we identi fi ed a T-DNA insertion mutant Osmtd1(Oryza sativa multi-tillering and dwarf mutant). Osmtd1 produced more tillers and displayed short stature phenotype. We determined that the dramatic morphological changes were caused by a single T-DNA insertion in Osmtd1. Further analysis revealed that the T-DNA insertion was located in the gene Os08g34258 encoding a putative inhibitor I family protein. Os08g34258 was knocked out and Osmi R156 f was signi fi cantly upregulated in Osmtd1. Overexpression of Os08g34258 in Osmtd1 complemented the defects of the mutant architecture, while overexpression of Osmi R156 f in wild-type rice phenocopied Osmtd1. We showed that the expression of Os SPL3, Os SPL12,and Os SPL14 were signi fi cantly downregulated in Osmtd1 or Osmi R156 f overexpressed lines, indicating that Os SPL3,Os SPL12, and Os SPL14 were possibly direct target genes of Osmi R156 f. Our results suggested that Osmi R156 f controlledplant architecture by mediating plant stature and tiller outgrowth and may be regulated by an unknown protease inhibitor I family protein. | Qing Liu Gezhi Shen Keqin Peng Zhigang Huang Jianhua Tong Mohammed Humayun Kabir Jianhui Wang Jingzhe Zhang Genji Qin Langtao Xiao | 2015 | Journal of Integrative Plant Biology2015，57，10： | 5 |
| 4 | LC-MS法测定拟南芥原生质体脱落酸的研究显示文摘利用高效液相色谱与质谱联用法(LC-MS法)对从土培拟南芥叶片和水培拟南芥根系中分离的原生质体进行脱落酸含量分析.结果表明,所测原生质体的脱落酸含量与原生质体数目之间具有较好的线性关系,相关系数分别为0.992 3和0.993 1.脱落酸含量的检测下限为1.07 ng/mL,土培拟南芥叶片和水培拟南芥根系原生质体检测下限分别为3万个和2万个.该研究以原生质体为材料,避免了细胞间隙中的复杂化学成干扰,提高了植物激素测定的灵敏度和精度,完善了经典的植物激素测定技术. | 郭磊 Mohammed Humayun KABIR 童建华 黄志刚 萧浪涛 | 2012 | 华南师范大学学报(自然科学版)2012，44，4： | 2 |
| 5 | Does Derivatives Use Reduce Stock Price Exposure? Evidence from UK Firms显示文摘 | Pinghsun Huang M Humayun Kabir and Yan Zhang | 2007 | NBER Working Paper2007，，： | 1 |
| 6 | Smart modeling of microwave devices 显示文摘 | Humayun Kabir Zhang Lei Yu Ming etc | 2010 | IEEE Microwave magazine2010，11，3： | 1 |
| 7 | Strategic planning in municipal government : The case of city of Ottawa 显示文摘 | S M HUMAYUN KABIR | 2007 | Canadian Social Science2007，5，3： | 1 |
| 8 | A Multivariate Model of Perceived Quality in a Developing Country显示文摘 | M. Humayun Kabir Chowdhury Syed S. Andaleeb | 2007 | Journal of International Consumer Marketing2007，，4： | 1 |
| 9 | Neural network inverse modeling and applications to microwave filter design显示文摘 | Humayun Kabir Ying Wang Ming Yu | 2008 | IEEE Transactions on Microwave Theory and Techniques2008，56，4： | 1 |
| 10 | Recent advances of neural network-based EM-CAD显示文摘 | Humayun Kabir Ming Yu Qijun Zhang | 2010 | International Journal of RF and Microwave Computer-Aided Engineering2010，20，5： | 1 |
| 11 | Assessment of ecological risk for heavy metals in surface sediment of an urban river in a developing country显示文摘The speed of increasing threats to the riverine water resources makes it more critical to protect the health of Old Brahmaputra River ecosystems.The current study was done to investigate the concentrations,distributions,sources,and ecological risk of heavy metals in surface sediment from the Old Brahmaputra River,Bangladesh.Samples were collected from seven sites and analyzed with an inductively coupled plasma-mass spectrometer(ICP-MS).The results showed that mean concentrations(mg/kg)of heavy metals were in the order of nickel(Ni)(44.69)>chromium(Cr)(30.16)>lead(Pb)(19.31)>copper(Cu)(17.84)>cadmium(Cd)(3.94)>arsenic(As)(2.73).The contamination factor(CF),pollution load index(PLI),enrichment factor(EF),and geo-accumulation index(I_(geo))indicated low to moderate contamination.Toxic unit analysis revealed that the studied metals from all stations posed low risk.The sediment of the study river was uncontaminated to moderately contaminated,posing a minimal ecological risk.Cd,Cr,Ni,and Pb originated from anthropogenic sources rather than geogenic sources,and caused the severity of contamination.In this regard,pollutant-based intensive monitoring of heavy metals and holistic ecological risk assessments are required to maintain a sound and healthy aquatic environment in the river. | Md Saiful Islam Md Humayun Kabir Mir Mohammad Ali Md Towhidul Islam Asfia Niger Md Humayun Kabir Zulhilmi Ismail Sujat Ahmed Khalid A.Ibrahim Abubakr M.Idris | 2023 | International Journal of Sediment Research2023，38，6： | 0 |
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